A stay cable sling wire clamp and integral sling
By designing a dropper clamp with an arc-shaped structure and oblique holes, the problem of friction and wear between the dropper and the clamp plate was solved, enabling the dropper to bear force in a vertical state, meeting the vibration fatigue test requirements of the new standard, and improving the durability of the dropper.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY HIGH SPEED ELECTRIFICATION EQUIP CORP LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-03
AI Technical Summary
During use, the existing dropper clamp does not keep the main body of the dropper vertical, resulting in frequent contact with the lower edge of the clamp plate, causing friction and wear, and thus failing to meet the new standard's requirement of 2 million vibration fatigue tests.
A catenary dropper clamp was designed, which adopts an inner-concave and outer-convex arc structure of the main clamp plate and the auxiliary clamp plate, combined with oblique holes and vertical arc grooves. The dropper wire smoothly transitions to the outer arc surface of the clamp plate through the oblique holes. The lower end of the dropper wire groove is a flared mouth to ensure that the dropper wire is stressed in a vertical state and avoids friction and wear.
The dropper wire does not contact the lower edge of the clamp during use, avoiding wear and meeting the requirements of 2 million vibration fatigue tests, thus improving the durability and reliability of the dropper wire.
Smart Images
Figure CN224447528U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electrified railway catenary technology, and particularly relates to a catenary cable hanger clamp and an integral hanger. Background Technology
[0002] The closest existing technology to this utility model is a lug-type catenary dropper clamp (CN2905542Y), comprising a clamp base, two clamp plates (left and right), slotted bolts, flat washers, claw-type washers, spring washers, and nuts. Because both the main body and slewing sections of the dropper are clamped to the outside of the clamp plates by the slotted bolts during use, the clamped portion of the main body cannot be vertical when the dropper is under stress. During line use, the dropper frequently contacts the lower edge of the clamp plate due to the tilt under stress, causing friction and wear, leading to wire and strand breakage. With the development of electrified railways, the standards for the catenary industry have changed. The new standard TB / T2074-2020, "Test Methods for Components of Electrified Railway Catenary," requires the overall dropper to withstand 2 million vibration fatigue cycles. Existing catenary dropper clamps cannot meet the requirements of the new standard. Utility Model Content
[0003] This utility model provides a load-bearing cable dropper clamp and an integral dropper to overcome the shortcomings of the prior art.
[0004] The technical solution adopted by this utility model is: a load-bearing cable dropper clamp, which includes a main clamp plate, a secondary clamp plate, an arc-shaped clamp plate seat, and a slotted bolt pair;
[0005] The upper part of the main clamping plate and the auxiliary clamping plate are both concave-convex arc-shaped structures, and the lower part are both flat structures. The inner arc surface of the arc-shaped structure serves as a horizontal clamping groove. A vertical arc-shaped groove is opened on the inner side of the flat structure, and the vertical arc-shaped groove penetrates the lower end of the flat structure. A pair of fan-shaped through holes penetrating the flat structure are symmetrically arranged on both sides of the vertical arc-shaped groove. An oblique hole is opened between the arc-shaped structure and the flat structure on the main clamping plate. The lower end of the oblique hole is connected to the vertical arc-shaped groove and smoothly connected, and the upper end is connected to the lower part of the outer arc surface of the arc-shaped structure and smoothly connected.
[0006] The main clamping plate and the auxiliary clamping plate are hinged to each other at the lower ends of the arc-shaped clamping plate seat, and two horizontal clamping slots are arranged opposite each other to form a load-bearing cable slot, and two vertical arc-shaped slots are arranged opposite each other to form a dropper cable slot. The slotted bolt pair passes through a pair of fan-shaped through holes to connect the lower ends of the main clamping plate and the auxiliary clamping plate together. When the dropper cable enters from the lower end of the dropper cable slot, exits through the oblique hole, and then passes around the outer arc surface of the arc structure of the main clamping plate and the arc groove around the arc-shaped clamping plate seat, it turns back downward and then passes around the outer arc surface of the arc structure of the auxiliary clamping plate and exits through the slot of the slotted bolt pair. The dropper cable can be clamped and fixed by tightening the slotted bolt pair.
[0007] An oblique hole is also provided between the arc-shaped structure and the flat plate structure on the sub-clamp plate. The lower end of the oblique hole is connected to the vertical arc-shaped groove and smoothly connected, and the upper end is connected to the outer arc surface of the arc-shaped structure and smoothly connected.
[0008] The slotted bolt assembly enters from one side of the main clamping plate and exits from one side of the auxiliary clamping plate, and after exiting, a spacer washer and a wire clamping washer are sequentially fitted on it. The spacer washer has a connecting plate that is radially adapted to the slot width of the slotted bolt assembly, and the wire clamping washer has a claw that is radially adapted to the slot width of the slotted bolt assembly. The connecting plate and the wire clamping washer are both vertically provided with arc-shaped wire clamping grooves on their opposite surfaces, and the claws are located on the side away from the arc-shaped wire clamping grooves. When the nut of the slotted bolt assembly is tightened, the suspension wire is clamped in the arc-shaped wire clamping groove, and the claws restrict the contraction of the slot of the slotted bolt assembly.
[0009] The lower end of the vertical arc-shaped groove is widened, thereby forming a flared mouth at the lower end of the suspension wire groove.
[0010] The top of the arc-shaped structure has a pair of ear plates, and the main clamping plate and the auxiliary clamping plate are hinged to the lower ends of the arc-shaped clamping plate seat through the pair of ear plates.
[0011] An integral dropper includes a catenary dropper clamp, a contact wire dropper clamp, a dropper wire, a heart-shaped ring, and a dropper ring. The dropper ring is connected to the contact wire dropper clamp, the heart-shaped ring is fitted onto the dropper ring, and the lower end of the dropper wire passes around the periphery of the heart-shaped ring and the main body section and the rotating section are pressed and fixed together. The end of the rotating section is connected to the contact wire dropper clamp through a connecting clamp.
[0012] The upper end of the dropper wire enters from the lower end of the dropper wire groove, exits through the oblique hole, and then successively passes around the outer arc surface of the main clamping plate arc structure. The arc groove around the arc clamping plate seat folds back downward and then passes around the outer arc surface of the secondary clamping plate arc structure before exiting through the slot of the slotted bolt pair. The main body of the dropper wire can be clamped and fixed in the dropper wire groove by tightening the slotted bolt pair, and the rotating section of the dropper wire can be pressed and fixed in the arc-shaped wire clamping groove.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. After installation, the load-bearing cable dropper clamp of this utility model can clamp the main body of the dropper wire between two clamping plates. When the dropper wire is under force, the clamped part of the main body is in a vertical state. During the use of the line, the dropper wire and the lower edge of the clamping plate are basically not in contact, so there will be no friction and wear. This solves the problem of wire breakage and strand breakage caused by friction and wear between the dropper wire and the lower edge of the clamping plate in the existing structure.
[0015] 2. The lower end of the dropper wire groove of this utility model is a flared mouth, which further ensures that the dropper wire does not come into contact with the lower edge of the clamp during the use of the line, and also protects the dropper wire from being scratched or worn when it is passed into the dropper wire groove.
[0016] 3. The upper end of the dropper wire groove of this utility model is smoothly connected to the outer arc surface of the clamping plate through the setting of the oblique hole. During installation, the dropper wire can smoothly transition from the dropper wire groove to the outer arc surface of the clamping plate through the oblique hole, which can ensure that the dropper wire will not be scratched or worn during the process.
[0017] 4. The integral dropper of this utility model is simulated and tested according to the new standard TB / T 2074-2020 "Test Methods for Contact Network Components of Electrified Railways", and can meet the requirements of 2 million vibration fatigue tests. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the load-bearing cable suspension wire clamp of this utility model;
[0019] Figure 2 This is a cross-sectional schematic diagram of the load-bearing cable suspension wire clamp of this utility model;
[0020] Figure 3 This is a schematic diagram of the main and auxiliary clamping plate structure of this utility model;
[0021] Figure 4 This is a cross-sectional schematic diagram of the main and auxiliary clamping plates of this utility model;
[0022] Figure 5 This is a schematic diagram of the overall suspension cable structure of this utility model;
[0023] Figure 6 This is a schematic diagram of the spacer gasket structure of this utility model;
[0024] Figure 7 This is a schematic diagram of the wire clamping washer structure of this utility model. Detailed Implementation
[0025] The following is in conjunction with the appendix Figure 1-7 The present invention will be described in detail with reference to specific embodiments.
[0026] Reference Figure 5 An integral dropper includes a catenary dropper clamp 3, a contact wire dropper clamp 1, a dropper wire 2, a heart-shaped ring 17, and a dropper ring 18. The dropper ring 18 is connected to and located above the contact wire dropper clamp 1, and the heart-shaped ring 17 is fitted onto the dropper ring 18.
[0027] Reference Figure 1 , 2 3. The load-bearing cable suspension wire clamp 3 includes a main clamping plate 4, a secondary clamping plate 5, an arc-shaped clamping plate seat 6, and a slotted bolt pair 7; the upper part of the main clamping plate 4 and the secondary clamping plate 5 are both concave-convex arc-shaped structures, and the lower part is a flat plate structure, and the inner arc surface of the arc-shaped structure serves as a horizontal clamping groove 8; a vertical arc-shaped groove 9 is provided on the inner side of the flat plate structure, and the vertical arc-shaped groove 9 penetrates the lower end of the flat plate structure, and a pair of fan-shaped through holes 10 are symmetrically arranged on both sides of the vertical arc-shaped groove 9, penetrating the flat plate structure; an oblique hole 11 is provided between the arc-shaped structure on the main clamping plate 4 and the flat plate structure, and the lower end of the oblique hole 11 is connected to the vertical arc-shaped groove 9 and smoothly connected, and the upper end is connected to the lower part of the outer arc surface of the arc-shaped structure and smoothly connected;
[0028] The main clamping plate 4 and the auxiliary clamping plate 5 are hinged to each other at both ends below the arc-shaped clamping plate seat 6, and the two horizontal clamping grooves 8 are arranged opposite each other to form the load-bearing cable groove 14, and the two vertical arc-shaped grooves 9 are arranged opposite each other to form the suspension cable groove 15; the slotted bolt pair 7 passes through a pair of fan-shaped through holes 10 to connect the lower ends of the main clamping plate 4 and the auxiliary clamping plate 5 together.
[0029] Reference Figure 2 , 6 7. The slotted bolt assembly 7 enters from one side of the main clamping plate 4 and exits from one side of the auxiliary clamping plate 5, and after exiting, a spacer washer 12 and a wire clamping washer 13 are sequentially fitted. The spacer washer 12 has a connecting plate 12-1 that is radially adapted to the slot width of the slotted bolt assembly 7, and the wire clamping washer 13 has a claw 13-1 that is radially adapted to the slot width of the slotted bolt assembly 7. The connecting plate 12-1 and the wire clamping washer 12 are vertically provided with arc-shaped wire clamping grooves 16 on their opposite surfaces, and the claw 13-1 is located on the side away from the arc-shaped wire clamping grooves 16. When the nut 7-1 of the slotted bolt assembly 7 is tightened, the suspension wire 2 is clamped in the arc-shaped wire clamping grooves 16, and the claw 13-1 restricts the slot contraction of the slotted bolt assembly 7.
[0030] Reference Figure 5The upper end of the dropper wire 2 enters from the lower end of the dropper wire groove 15, exits through the oblique hole 11, and then successively passes around the outer arc surface of the arc structure of the main clamping plate 4 and the arc groove around the arc clamping plate seat 6. It then turns back downward and passes around the outer arc surface of the arc structure of the auxiliary clamping plate 5 before exiting through the slot of the slotted bolt pair 7. The main body of the dropper wire 2 can be clamped and fixed in the dropper wire groove 15 by tightening the slotted bolt pair 7, and the rotating section of the dropper wire 2 can be pressed and fixed in the arc-shaped wire clamping groove 16. The lower end of the dropper wire 2 passes around the periphery of the heart-shaped ring 17 and the main body and rotating section are pressed and fixed together. The end of the rotating section is connected to the contact wire dropper wire clamp 1 through the connecting wire clamp 19.
[0031] In the above embodiments, to ensure interchangeability between the main clamping plate 4 and the auxiliary clamping plate 5, and to allow the suspension wire 2 to be inserted counterclockwise, an oblique hole 11 is provided between the arc-shaped structure and the flat plate structure on the auxiliary clamping plate 5. The lower end of the oblique hole 11 is smoothly connected to the vertical arc-shaped groove 9, and the upper end is smoothly connected to the outer arc surface of the arc-shaped structure. This allows the upper end of the suspension wire 2 to enter from the lower end of the suspension wire groove 15, exit through the oblique hole 11, and then successively bypass the outer arc surface of the arc-shaped structure of the auxiliary clamping plate 5, the arc groove around the arc-shaped clamping plate seat 6, fold back downwards, and then bypass the outer arc surface of the arc-shaped structure of the main clamping plate 4 before exiting through the slot of the slotted bolt assembly 7.
[0032] In the above embodiments, to ensure that the dropper wire does not contact the lower edge of the clamp during use, and to protect the dropper wire from scratches or wear during its insertion into the dropper wire groove, the lower end of the vertical arc-shaped groove 9 is widened, thereby forming a flared opening at the lower end of the dropper wire groove 15.
[0033] In the above embodiment, the top of the arc-shaped structure has a pair of ear plates 8a, and the main clamping plate 4 and the auxiliary clamping plate 5 are hinged to the lower ends of the arc-shaped clamping plate seat 6 through the pair of ear plates 8a.
[0034] In the above embodiments, both sides of the main clamping plate 4 and the secondary clamping plate 5 are raised outward to form flanges, so as to improve strength and rigidity.
[0035] In the above embodiments, the contact wire dropper clamp 1 adopts an existing structure, as long as it can meet the usage requirements.
[0036] In use, the contact wire dropper clamp 1 is clamped on the contact wire 11, and the catenary dropper clamp 3 is connected to the catenary 20 through the catenary groove 14. At the same time, the ends of the arc-shaped clamp groove 16 and the catenary groove 14 can be set as flared mouths to protect the dropper wire 2 and the catenary 20 from scratches or wear.
[0037] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Therefore, all equivalent variations made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.
Claims
1. A catenary dropper clamp, wherein the catenary dropper clamp (3) comprises a main clamping plate (4), a secondary clamping plate (5), an arc-shaped clamping plate seat (6), and a slotted bolt pair (7); characterized in that: The upper part of the main clamping plate (4) and the auxiliary clamping plate (5) are both concave-convex arc-shaped structures, and the lower part is a flat plate structure. The inner arc surface of the arc-shaped structure serves as a horizontal clamping groove (8). A vertical arc-shaped groove (9) is provided on the inner side of the flat plate structure. The vertical arc-shaped groove (9) penetrates the lower end of the flat plate structure. A pair of fan-shaped through holes (10) penetrating the flat plate structure are symmetrically arranged on both sides of the vertical arc-shaped groove (9). An oblique hole (11) is provided between the arc-shaped structure and the flat plate structure on the main clamping plate (4). The lower end of the oblique hole (11) is connected to the vertical arc-shaped groove (9) and smoothly connected. The upper end is connected to the lower part of the outer arc surface of the arc-shaped structure and smoothly connected. The main clamping plate (4) and the auxiliary clamping plate (5) are hinged to each other at both ends below the arc-shaped clamping plate seat (6), and two horizontal clamping grooves (8) are arranged opposite each other to form a load-bearing cable groove (14), and two vertical arc-shaped grooves (9) are arranged opposite each other to form a dropper wire groove (15); the slotted bolt pair (7) passes through a pair of fan-shaped through holes (10) to connect the lower ends of the main clamping plate (4) and the auxiliary clamping plate (5) together; when the dropper wire (2) enters from the lower end of the dropper wire groove (15), exits through the inclined hole (11), and then passes around the outer arc surface of the arc structure of the main clamping plate (4) and the arc groove around the arc-shaped clamping plate seat (6), turns back downward and then passes around the outer arc surface of the arc structure of the auxiliary clamping plate (5) and exits through the slot of the slotted bolt pair (7), and the dropper wire (2) can be clamped and fixed by tightening the slotted bolt pair (7).
2. A messenger strand suspension line clamp according to claim 1, characterized in that: An oblique hole (11) is also provided between the arc-shaped structure and the flat plate structure on the sub-clamp plate (5). The lower end of the oblique hole (11) is connected to the vertical arc-shaped groove (9) and smoothly connected, and the upper end is connected to the lower part of the outer arc surface of the arc-shaped structure and smoothly connected.
3. A messenger strand suspension line clamp according to claim 1, wherein: The slotted bolt assembly (7) is inserted from one side of the main clamping plate (4) and exits from one side of the auxiliary clamping plate (5), and after exiting, a spacer washer (12) and a wire clamping washer (13) are sequentially fitted. The spacer washer (12) has a connecting plate (12-1) in the radial direction that matches the slot width of the slotted bolt assembly (7), and the wire clamping washer (13) has a claw (13-1) in the radial direction that matches the slot width of the slotted bolt assembly (7). The connecting plate (12-1) and the wire clamping washer (13) are vertically provided with arc-shaped wire clamping grooves (16) on their opposite surfaces. The claw (13-1) is located on the side away from the arc-shaped wire clamping groove (16). When the nut (7-1) of the slotted bolt assembly (7) is tightened, the suspension wire (2) is clamped in the arc-shaped wire clamping groove (16) and the claw (13-1) restricts the slot of the slotted bolt assembly (7) from shrinking.
4. A messenger strand suspension line clamp according to claim 1, wherein: The lower end of the vertical arc groove (9) is widened, thereby forming a flared mouth at the lower end of the suspension wire groove (15).
5. A messenger strand suspension line clamp (3) according to claim 1, characterized in that: The top of the arc-shaped structure has a pair of ear plates (8a), and the main clamping plate (4) and the auxiliary clamping plate (5) are hinged to the two ends below the arc-shaped clamping plate seat (6) through the pair of ear plates (8a).
6. A one-piece suspension string, characterized in that: The device includes the catenary dropper clamp (3), contact wire dropper clamp (1), dropper (2), heart-shaped ring (17), and dropper (18) as described in any one of claims 1-4. The dropper (18) is connected to the contact wire dropper clamp (1), the heart-shaped ring (17) is fitted onto the dropper (18), and the lower end of the dropper (2) passes around the periphery of the heart-shaped ring (17) and the main body section and the rotating section are pressed and fixed together. The end of the rotating section is connected to the contact wire dropper clamp (1) through a connecting clamp (19). The upper end of the drop wire (2) enters from the lower end of the drop wire groove (15), exits through the inclined hole (11), and then passes around the outer arc surface of the arc structure of the main clamping plate (4) and the arc groove around the arc clamping plate seat (6). It then turns back downward and passes around the outer arc surface of the arc structure of the auxiliary clamping plate (5) and exits through the slot of the slotted bolt pair (7). The main body of the drop wire (2) can be clamped and fixed in the drop wire groove (15) by tightening the slotted bolt pair (7), and the rotating section of the drop wire (2) can be pressed and fixed in the arc-shaped clamping groove (16).