Bolt-free carrier cable clamp and adjustable integral dropper

Abstract

The utility model discloses a bolt-free carrier cable clamp and an adjustable integral dropper. The bolt-free carrier cable clamp comprises an auxiliary clamping plate and a main clamping plate which are of an inverted-L-shaped step structure. The center of the outer surface of a first arc clamping opening in the upper end of the auxiliary clamping plate is provided with two first protruding edges in the circumferential direction, a first arc groove is formed between the two first protruding edges, the lower end of the auxiliary clamping plate is provided with a first inverted-T-shaped boss, and the first inverted-T-shaped boss is located under the first arc groove. The center of the outer surface of a second arc clamping opening in the upper end of the main clamping plate is provided with two second protruding edges in the circumferential direction, a second arc groove is formed between the two second protruding edges, the lower end of the main clamping plate is provided with a second inverted-T-shaped boss, and the second inverted-T-shaped boss is located under the second arc groove. The auxiliary clamping plate and the main clamping plate are oppositely arranged and nested together, and then the carrier cable is clamped through the first arc clamping opening and the second arc clamping opening. Meanwhile, the first arc groove and the second arc groove are oppositely arranged to form an annular wire groove, and the first inverted-T-shaped boss and the second inverted-T-shaped boss are oppositely attached together.

Description

Technical Field

[0001] This utility model belongs to the field of electrified railway catenary technology, and particularly relates to a boltless load-bearing cable clamp and an adjustable suspension string. Background Technology

[0002] The two ends of the integral dropper are respectively installed on the catenary and the contact wire. It is used to adjust the height of the contact wire from the track in the contact network, to ensure the stability of the pantograph-catenary relationship, and also to carry a certain amount of current, so as to make the electrical distribution of the contact network more uniform.

[0003] The closest existing technology to this utility model is: boltless clamp and boltless integral dropper (publication number: CN218640707U). In use, according to the set length of the line, the two ends of the dropper wire need to be wrapped around the heart-shaped ring and then folded in half. After being crimped through the crimping tube, they are respectively crimped and connected to the catenary clamp and the contact wire clamp. Then the catenary clamp and the contact wire clamp are fixed to the catenary and the contact wire respectively. The length of the dropper wire cannot be adjusted, which cannot meet the installation requirements of special sections such as lines with large gradient changes, bridges, and tunnels. Utility Model Content

[0004] This utility model provides a boltless load-bearing cable clamp and an adjustable suspension string to overcome the shortcomings of the prior art.

[0005] The technical solution adopted by this utility model is: a boltless load-bearing cable clamp, including a secondary clamp plate and a main clamp plate with an inverted "L" shaped stepped structure; the outer surface of the first arc clamping opening at the upper end of the secondary clamp plate has two first protruding ridges along the circumferential direction at the center, and the two first protruding ridges form a first arc groove; the lower end of the secondary clamp plate has a first inverted T-shaped boss, and the first inverted T-shaped boss is located directly below the first arc groove;

[0006] The upper end of the main clamping plate has two second protruding ridges along the circumferential direction on the outer surface of the second arc clamping opening, and the two second protruding ridges form a second arc groove. The lower end of the main clamping plate has a second inverted T-shaped boss, and the second inverted T-shaped boss is located directly below the second arc groove.

[0007] The auxiliary clamping plate is arranged opposite to and nested with the main clamping plate, and then clamps the load-bearing cable through the first arc clamping mouth and the second arc clamping mouth; at the same time, the first arc groove and the second arc groove are arranged opposite to form an annular groove, and the first inverted T-shaped boss and the second inverted T-shaped boss are opposite to and attached together.

[0008] The mating surfaces of the first inverted T-shaped boss and the second inverted T-shaped boss are mutually compatible inclined surfaces.

[0009] An adjustable dropper includes a boltless contact wire clamp, a boltless load-bearing wire clamp, a heart-shaped ring, a slotted bolt assembly, and a dropper wire. The boltless load-bearing wire clamp is held on the load-bearing wire, and the boltless contact wire clamp is held on the contact wire. The upper end of the dropper wire passes around the annular groove on the boltless load-bearing wire clamp, rotates back, and is inserted into a crimping tube and crimped for fixation. The main body section and rotating section of the dropper wire below the boltless load-bearing wire clamp, as well as the first inverted T-shaped boss and the second inverted T-shaped boss, are all... The slotted bolt assembly is inserted into the axial mounting groove on the slotted bolt assembly and fixed together. The slotted bolt assembly sits on the shoulders of the first inverted T-shaped boss and the second inverted T-shaped boss. The main body section and the rotating section are located on both sides of the first inverted T-shaped boss and the second inverted T-shaped boss. The heart-shaped ring is fitted onto the upper end of the boltless contact wire clamp. After the lower end of the dropper wire passes around the periphery of the heart-shaped ring, the main body section and the rotating section are pressed together and fixed. The end of the rotating section is inserted into the crimping tube on the boltless contact wire clamp and pressed together and fixed.

[0010] The axial mounting groove is also provided with a liner and a T-shaped pad, which are arranged on the outside of the main body section and the rotating section.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The boltless load-bearing cable clamp of this utility model has an annular groove along the circumference on the outer surface. The suspension cable can directly pass through the annular groove and then turn around, eliminating the need for a heart-shaped ring and reducing the number of components. In addition, the lower end of the clamp has an inverted T-shaped boss, which facilitates the positioning and connection of the slotted bolt pair.

[0013] 2. In this utility model, the dropper wire passes over the top of the boltless load-bearing cable clamp and is then fixed together with the main body and the slewing section by a pair of parallel slotted bolts. By loosening the pair of parallel slotted bolts, the length of the dropper wire can be freely adjusted, which meets the installation requirements of special sections such as lines with large gradient changes, bridges, and tunnels.

[0014] 3. The parallel slotted bolt pair of this utility model sits on the inverted T-shaped boss shoulder of the catenary clamp, making the connection of the overall dropper more stable, reducing the risk of dropper loosening and displacement caused by factors such as train operation vibration, improving the overall structural stability of the contact network, ensuring stable current collection by the pantograph, and at the same time, allowing the dropper wire to be subjected to more uniform and reasonable stress, avoiding excessive local stress, better distributing and transmitting the tension of the dropper wire, reducing stress concentration in specific parts of the dropper wire, and extending the service life of the dropper wire. Attached Figure Description

[0015] Figure 1 , 2 This is a schematic diagram of the adjustable suspension cable structure of this utility model;

[0016] Figure 3This is a schematic diagram of the parallel bolt assembly structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the T-shaped pad structure of this utility model.

[0018] Figure 5 This is a schematic diagram of the load-bearing cable clamp structure of this utility model;

[0019] Figure 6 , 7 This is a schematic diagram of the sub-clamping plate structure of the load-bearing cable clamp of this utility model;

[0020] Figure 8 , 9 This is a schematic diagram of the main clamping plate structure of the load-bearing cable clamp of this utility model; Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-9 The present invention will be described in detail with reference to specific embodiments.

[0022] An adjustable dropper includes a boltless contact wire clamp 1, a boltless load-bearing cable clamp 2, a heart-shaped ring 3, a slotted bolt pair 4, and a dropper wire 5;

[0023] The boltless load-bearing cable clamp 2 includes a secondary clamp plate 6 and a main clamp plate 7. The secondary clamp plate 6 has an inverted "L"-shaped stepped structure, with an upward-facing first boss 6-1 at the rear, a first step 6-2 at the front, and a first arc-shaped clamping opening 6-3 on the lower inner side that matches the load-bearing cable 10. The outer surface of the first arc-shaped clamping opening 6-3 has two first protruding ridges 6-4 circumferentially arranged at the center, and the two first protruding ridges 6-4 form a first arc-shaped groove 6-5. The first boss 6-1 extends upwards... The first arc-shaped lifting lug 6-6 has a first inverted T-shaped boss 6-10 at its upper end, and the first inverted T-shaped boss 6-10 is directly opposite the first arc groove 6-5; the inner side of the first arc-shaped lifting lug 6-6 has a first inclined surface 6-7 that is in line with the line direction and gradually slopes towards the front end; the lower inner side of the first boss 6-1 has a first plane 6-8, and the outer side of the first boss 6-1 has a groove 6-9 that is in line with the inner end of the first boss 6-1;

[0024] The main clamping plate 7 has an inverted "L"-shaped stepped structure, with an upward-facing second protrusion 7-1 at the front and a second step 7-2 at the rear. Its lower inner side has a second arc-shaped clamping opening 7-3 that matches the catenary cable 10. The outer surface of the second arc-shaped clamping opening 7-3 has two second protruding ridges 7-4 circumferentially oriented at its center, forming a second arc-shaped groove 7-5. A second arc-shaped lifting lug 7-6 and a crimping pipe 7-7 extend upwards along the cable direction from the second protrusion 7-1. The crimping pipe 7-7 is inclined towards the end furthest from the second arc-shaped lifting lug 7-6. The second arc-shaped lifting lug 7-6 has a second inverted T-shaped boss 7-11 at the center of its upper end, and the second inverted T-shaped boss 7-11 is directly opposite the second arc groove 7-5. The inner side of the second arc-shaped lifting lug 7-6 has a second inclined surface 7-8 that is inclined towards the rear end along the line direction. The first inclined surface 6-7 and the second inclined surface 7-8 have the same inclination angle. The lower inner side of the second boss 7-1 has a second plane 7-9. The inner end of the second boss 7-1 has a third boss 7-10 along the line direction, and the third boss 7-10 is located above the second plane 7-9.

[0025] The auxiliary clamping plate 6 is arranged opposite to the main clamping plate 7, and the third protrusion 7-10 is inserted into the groove 6-9, so that the first inclined surface 6-7 and the second inclined surface 7-8 are in contact, the first plane 6-8 is located on the second step 7-2, and the second plane 7-9 is located on the first step 6-2. Through the mutual compression of the first inclined surface 6-7 and the second inclined surface 7-8, the auxiliary clamping plate 6 rotates counterclockwise around the third protrusion 7-10 through the groove 6-9, and the main clamping plate 7 rotates clockwise around the groove 6-9 through the third protrusion 7-10, and is then clamped by the first arc clamping mouth 6-3 and the second arc clamping mouth 7-3 bearing cable 10. At the same time, the first arc groove 6-5 and the second arc groove 7-5 correspond to form an annular groove 8, and the first inverted T-shaped protrusion 6-10 and the second inverted T-shaped protrusion 7-11 overlap.

[0026] To ensure smooth rotation of the secondary clamping plate 6 and the main clamping plate 7, the bottom of the groove 6-9 is arc-shaped, and the inner side of the third protrusion 7-10 is an arc-shaped structure adapted to the arc shape.

[0027] In one embodiment, the first inclined surface 6-7 includes a first main inclined surface 6-11 and a first secondary inclined surface 6-12 with the same slope. The first secondary inclined surface 6-12 is located at the upper inner end of the first arc-shaped lug 6-6 and protrudes inward from the first main inclined surface 6-11, so that the first main inclined surface 6-11 and the first secondary inclined surface 6-12 form a first shoulder 6-13. The second inclined surface 7-8 includes a second main inclined surface 7-12 and a second secondary inclined surface 7-10 with the same slope. The second secondary inclined surface 7-10 is located at the upper inner end of the second arc-shaped lug 7-6 and protrudes inward from the second main inclined surface 7-12, so that the second main inclined surface 7-12 and the second secondary inclined surface 7-10 form a second shoulder 7-14. The first secondary inclined surface 6-12 is in close contact with the second main inclined surface 7-12, and the second secondary inclined surface 7-10 is in close contact with the first main inclined surface 6-11. The first shoulder plate 6-13 and the second shoulder plate 7-14 work together to prevent slippage, forming an anti-slip structure that effectively prevents the main and auxiliary clamps from separating.

[0028] The mating surfaces of the first inverted T-shaped boss 6-10 and the second inverted T-shaped boss 7-11 are mutually compatible inclined surfaces. Moreover, the inclined surfaces are consistent with the first main inclined surface 6-11, which facilitates the installation of the auxiliary clamping plate 6 and the main clamping plate 7.

[0029] In order to increase the friction coefficient between the first arc clamp 6-3, the second arc clamp 7-3 and the load-bearing cable, and thus increase the sliding load between the load-bearing cable clamp 2 and the load-bearing cable, anti-slip teeth 9 are evenly distributed on the inner surfaces of the first arc clamp 6-3 and the second arc clamp 7-3. The anti-slip teeth 9 are preferably threaded teeth.

[0030] In one embodiment, the secondary clamping plate 6 and the main clamping plate 7 are formed by copper alloy forging, and the angle between the pressure pipe 7-7 and the line direction is 40-50°, preferably 45°.

[0031] The boltless contact wire clamp 1 is held on the contact wire 11. The upper end of the dropper 5 passes around the annular groove 8 on the boltless load-bearing wire clamp 2 and is inserted into the crimping tube 7-7 and crimped and fixed. The dropper 5, the first inverted T-shaped boss 6-10, and the second inverted T-shaped boss 7-11 are all inserted into the axial mounting groove on the slotted bolt pair 4 and fixed together. The slotted bolt pair 4 sits on the shoulders of the first inverted T-shaped boss 6-10 and the second inverted T-shaped boss 7-11. The heart-shaped ring 3 is fitted on the ring structure 1-1 of the boltless contact wire clamp 2. The lower end of the dropper 5 passes around the periphery of the heart-shaped ring 3 and is inserted into the crimping tube 1-2 on the boltless contact wire clamp 1 and crimped and fixed. The two dropper wires 5 folded at the open end of the lower heart-shaped ring 3 are crimped together by the lower crimping tube 12.

[0032] To reduce wear on the dropper wires, a liner plate 13 and a T-shaped pad 14 are respectively installed in the mounting groove 4-1 of the slotted bolt assembly 4. The liner plate 13 and the T-shaped pad 14 are distributed on the outside of the two dropper wires 5. The liner plate 13 is close to the bolt head and has flared ends to reduce friction with the dropper wires. The T-shaped pad 14 is close to the lock nut to prevent the wires from being pressed into the mounting groove. The two ends of the T-shaped pad 14 are provided with limiting bosses so that the T-shaped pad 14 is locked in the mounting groove 4-1 to prevent the T-shaped pad 14 from falling off during installation.

[0033] The contact wire clamp 1 is a conventional boltless contact wire clamp, which has the same structure as the boltless contact wire clamp in the background art.

[0034] Specific installation method: First, clamp the contact wire clamp 1 above the contact wire 11. Then, insert the heart-shaped ring 3 into the hanging ring structure 1-1 above the contact wire clamp 2. Next, pass the end of the drop wire 5 near the contact wire 11 through the lower pressure tube 4, around the lower heart-shaped ring 3, and then out through the lower pressure tube 4, leaving a certain length. The drop wire 5 and the lower pressure tube 4 are connected by a crimping process. The end of the drop wire 5 is crimped and fixed to the crimping tube 1-2 of the main clamp plate of the contact wire clamp 1, forming a current-carrying ring. Then, clamp the load-bearing cable clamp 1 on the load-bearing cable clamp 2. Below cable 15, the dropper 5 is then routed around the annular groove 8 on the load-bearing cable clamp 1 and overlapped with the first inverted T-shaped boss 6-10 and the second inverted T-shaped boss 7-11 on the auxiliary clamp 6 and the main clamp 7. The two dropper lines, the first inverted T-shaped boss 6-10, and the second inverted T-shaped boss 7-11 are then fixed together with slotted bolts 4, leaving a certain length. The end of the dropper 5 is crimped and fixed to the crimping tube 7-7 of the load-bearing cable clamp 1 and the main clamp 7 to form another current-carrying ring; thus completing the installation of the boltless integral dropper.

[0035] 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 boltless load-bearing cable clamp, comprising a secondary clamping plate (6) and a main clamping plate (7) with an inverted "L"-shaped stepped structure; characterized in that: The outer surface of the first arc-shaped clamping opening (6-3) at the upper end of the sub-clamping plate (6) has two first protruding ridges (6-4) along the circumferential direction, and the two first protruding ridges (6-4) form a first arc-shaped groove (6-5). The lower end of the sub-clamping plate (6) has a first inverted T-shaped boss (6-10), and the first inverted T-shaped boss (6-10) is located directly below the first arc-shaped groove (6-5). The second arc-shaped clamp (7-3) at the upper end of the main clamping plate (7) has two second protruding ridges (7-4) along the circumferential direction at the center of the outer surface, and the two second protruding ridges (7-4) form a second arc groove (7-5). The lower end of the main clamping plate (7) has a second inverted T-shaped boss (7-11), and the second inverted T-shaped boss (7-11) is located directly below the second arc groove (7-5). The auxiliary clamp (6) is arranged opposite to and nested with the main clamp (7), thereby clamping the load-bearing cable (10) through the first arc clamp (6-3) and the second arc clamp (7-3); at the same time, the first arc groove (6-5) and the second arc groove (7-5) are arranged opposite to form an annular groove (8), and the first inverted T-shaped boss (6-10) and the second inverted T-shaped boss (7-11) are opposite to and attached together.

2. The boltless load-bearing cable clamp according to claim 1, characterized in that: The mating surfaces of the first inverted T-shaped boss (6-10) and the second inverted T-shaped boss (7-11) are mutually compatible inclined surfaces.

3. An adjustable dropper, comprising a boltless contact wire clamp (1), a boltless load-bearing wire clamp (2), a heart-shaped ring (3), a slotted bolt pair (4), and a dropper wire (5); characterized in that: The boltless load-bearing cable clamp (2) is the clamp according to any one of claims 1-2. The boltless load-bearing cable clamp (2) is clamped on the load-bearing cable (10). The boltless contact wire clamp (1) is clamped on the contact wire (11). The upper end of the dropper wire (5) passes around the annular groove (8) on the boltless load-bearing cable clamp (2) and is inserted into the crimping tube (7-7) and crimped and fixed. The main body section and rotating section of the dropper wire (5) located below the boltless load-bearing cable clamp (2), as well as the first inverted T-shaped boss (6-10) and the second inverted T-shaped boss (7-11), are all inserted into the slotted bolt pair (4). The axial mounting groove (4-1) on the ) is fixed together, and the slotted bolt pair (4) sits on the shoulders of the first inverted T-shaped boss (6-10) and the second inverted T-shaped boss (7-11). The main body section and the rotating section are located on both sides of the first inverted T-shaped boss (6-10) and the second inverted T-shaped boss (7-11). The heart-shaped ring (3) is fitted on the upper end of the boltless contact wire clamp (1). The lower end of the suspension wire (5) passes around the periphery of the heart-shaped ring (3) and the main body section and the rotating section are pressed and fixed together. The end of the rotating section is inserted into the crimping tube (1-2) on the boltless contact wire clamp (1) and crimped and fixed.

4. An adjustable body suspension string according to claim 3, characterized in that: The axial mounting groove (4-1) is also provided with a liner (13) and a T-shaped pad (14), which are arranged on the outside of the main body section and the rotating section.

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