Fatigue-resistant hinge type dropper wire clamp

Abstract

The utility model relates to a fatigue-resistant hinge-type dropper wire clamp, which comprises a wire clamp body, two wire clamping plates, a connecting rod, a connecting rod and a connecting rod, the end part of a stud of the slotted bolt penetrates through the two wire clamping plates and then is in threaded connection with a nut, and a slotted hole is formed in the stud; the free end of the dropper wire penetrates through the slotted hole in one side of the wire clamp body and enters the slotted hole in the other side of the wire clamp body along the outer edge of the wire clamp body; the nut is screwed to drive the two wire clamping plates to be closed and enable the dropper wire to be clamped and fixed on the wire clamp body; the clamping piece comprises a base body arranged on the stud in a sleeving mode and a wire pressing section arranged on the base body, and the wire pressing section is used for limiting the dropper wire. The utility model provides the fatigue-resistant hinge type dropper wire clamp which can reduce the severity of a swinging root hard point of a dropper wire and prolong the service life of the dropper wire.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension strings, in particular to a fatigue-resistant hinge type suspension string clamp. Background Art

[0002] The hinged, integral dropper string on the overhead line railway primarily consists of three parts: a hinged dropper string clamp for the catenary, the dropper string, and the contact line dropper string clamp. The hinged dropper string clamp for the catenary consists primarily of a body, slotted bolts, and two washers. Conventional hinged dropper string clamps compress the dropper string at the slotted bolts. During string vibration, the string's vibration is transmitted to the base of the clamping point, causing repeated movement at the base and making the string susceptible to fatigue breakage or wire breakage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fatigue-resistant hinge type suspension string clamp which can reduce the severity of the hard point at the swing root of the suspension string and extend the service life of the suspension string.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A fatigue-resistant hinged string clamp, comprising:

[0006] The wire clamp body includes two clamping plates that can be opened and closed, and the two clamping plates are closed to clamp the load-bearing cable;

[0007] A slotted bolt, the end of the stud of which passes through the two clamping plates and is threadedly connected to a nut, and a slotted hole is opened on the stud;

[0008] The suspension string has a free end passing through the slot on one side of the clamp body and entering the slot on the other side of the clamp body along the outer edge of the clamp body; tightening the nut to drive the two clamp plates to close and clamp the suspension string to the clamp body;

[0009] The clamping piece comprises a base sleeved on the stud and a line pressing segment arranged on the base, wherein the line pressing segment is used for limiting the suspension string.

[0010] As an embodiment of the present invention, at least one opening is provided on the pressing section, and the opening includes two deformable wings provided on both sides of the pressing section. After the suspension string is placed in the opening, the two deformable wings are driven to close to limit the suspension string.

[0011] As an implementation mode of the present invention, a liner is sleeved on the suspension string, and the two deformable wings are closed to clamp the liner.

[0012] As an embodiment of the present invention, the inner diameter of the liner is larger than the diameter of the suspension string.

[0013] As an embodiment of the present invention, a limiting flange is provided on the upper end of the liner, and the limiting flange abuts against the upper end of the opening to limit the sliding of the liner.

[0014] As an implementation manner of the present invention, the two deformable wings are folded together to clamp the suspension string.

[0015] As an embodiment of the present utility model, a first washer is provided on the side of the stud close to the nut, and a second washer is provided on the side of the stud close to the nut; the first washer and the second washer are both provided with grooves on the side facing the suspension string, which are used to tighten the suspension string after the nut is tightened.

[0016] As an embodiment of the present invention, the first washer, the clamping plate and the base are all provided with a middle section corresponding to the slotted hole, and the middle section is used to limit the circumferential rotation of the first washer, the clamping plate and the base on the stud;

[0017] A middle rod is provided on the second washer corresponding to the slotted hole, and the middle rod is used to limit the circumferential rotation of the second washer on the stud.

[0018] As an implementation manner of the present invention, a nut washer is sleeved on the stud for tightening the nut.

[0019] As an embodiment of the present invention, the stud sleeve is provided with two clamping pieces, and the two clamping pieces are respectively located on both sides of the clamping plate, and are respectively used to restrict the main line and the auxiliary line of the suspension string.

[0020] The beneficial effects of adopting the above technical solution are:

[0021] In the present application, a clamping piece is sleeved on the slotted bolt, and the pressure section of the clamping piece can limit the suspension string. The pressure section liner moves the swing root of the suspension string to the end of the liner. There is an active gap between the liner and the suspension string. When the suspension string vibrates, contracts or swings, it has a certain buffering and absorbing effect on the movement of the suspension string. The swing root is no longer a hard point, and the swing amplitude and shear force of the suspension string at the clamping point between the bolt and the clamping plate are eliminated, thereby reducing the severity of the hard point at the swing root of the suspension string and extending the service life of the suspension string. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of an embodiment.

[0023] Figure 2 It is a structural schematic diagram of another angle of the embodiment.

[0024] Figure 3 It is a schematic diagram of the disassembled structure of the load-bearing cable, the wire clamp body, the slotted bolt and the suspension string of the embodiment.

[0025] Figure 4 yes Figure 3 Schematic diagram of the structure from another angle.

[0026] Figure 5 Schematic diagram of the exploded structure of the slotted bolt, nut, washer assembly and clamping piece of the embodiment.

[0027] Among them: 1 load-bearing cable; 2 suspension strings;

[0028] 3 Wire clamp body; 3-1 Hinge; 3-2 Wire clamp plate; 3-3 Rivet; 3-4 First through hole;

[0029] 4 Clamping piece; 4-1 Base; 4-2 Second via hole; 4-3 Wire pressing section; 4-4 Deformable wing;

[0030] 5 First washer; 6 Slotted bolt; 6-1 Slotted hole;

[0031] 7 Liner; 7-1 Pipe body; 7-2 Limit flange;

[0032] 8 Second washer; 9 Nut washer; 10 Nut. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described clearly and completely below in conjunction with specific embodiments.

[0034] like Figures 1 to 5 A fatigue-resistant hinged string clamp is shown, comprising:

[0035] The wire clamp body 3 includes two clamping plates 3-2 that can be opened and closed and an N-shaped hinge 3-1. The upper ends of the clamping plates 3-2 are hinged to the lower ends of the vertical portions of the hinge 3-1 via rivets 3-3. The clamping plates 3-2 are provided with first through-holes 3-4. The two clamping plates 3-2 are closed to clamp the load-bearing cable 1.

[0036] The slotted bolt 6 has a stud end which passes through the first through-holes 3-4 of the two clamping plates 3-2 and is then threadedly connected to a nut 10. The stud has a slotted hole 6-1 formed thereon;

[0037] The free end of the suspension string 2 passes through the slot 6-1 on one side of the clamp body 3 and enters the slot 6-1 on the other side of the clamp body 3 along the outer edge of the clamp body 3; tightening the nut 10 drives the two clamping plates 3-2 to close and clamp the suspension string 2 to the clamp body 3;

[0038] The clamping piece 4 includes a base 4-1 sleeved on the stud and a pressure segment 4-3 provided on the base 4-1. The pressure segment 4-3 is used to limit the suspension string 2, reduce the swing amplitude and shear force of the suspension string at the clamping point between the bolt and the clamping plate.

[0039] See also Figure 5 In this embodiment, two openings are arranged on the pressing section 4-3 at intervals, and the two openings are arranged vertically. The openings include two deformable wings 4-4 arranged on both sides of the pressing section 4-3. After the suspension string 2 is placed in the openings, the two deformable wings 4-4 are driven to close and deform into a "C"-shaped structure. The suspension string 2 is located in the annular area of the "C"-shaped structure to limit the suspension string 2.

[0040] Preferred, see Figure 3 and Figure 4 The suspension string 2 is sheathed with a liner 7. When the two deformable wings 4-4 are closed, they clamp the liner 7 to reduce friction caused by direct contact between the suspension string 2 and the deformable wings 4-4. For details, see the position-limiting method of the main line on the nut side and the clamping piece 4. In this embodiment, the liner 7 is made of polytetrafluoroethylene for wear and aging resistance, and the clamping piece 4 is made of stainless steel.

[0041] Preferably, the inner diameter of the liner 7 is 1-2 mm larger than the diameter of the suspension string 2 to ensure that the liner 7 can be slidably set on the suspension string 2, making it convenient to adjust the position of the liner 7.

[0042] See also Figure 5 A limiting flange 7-2 is provided at the upper end of the liner 7, and the limiting flange 7-2 abuts against the upper end of the opening to limit the sliding of the liner 7, so as to facilitate limiting the relative position of the liner 7 before the deformable wings 4-4 are closed and to facilitate fixation.

[0043] When the two deformable wings 4 - 4 are closed, they can clamp the suspension string 2, that is, the clamping method of the secondary line on the nut 10 side. Preferably, a liner 7 can also be provided on the clamping piece at the secondary line to increase the protection of the secondary line.

[0044] See also Figure 3 and Figure 4A first washer 5 is mounted on the stud near the nut, and a second washer 8 is mounted on the stud near the nut 10. A groove is provided on the side of the first and second washers 5 and 8 facing the suspension string 2, which is used to compress the suspension string 2 after the nut 10 is tightened. The first washer 5, the clamping plate 3-2, and the base 4-1 are all provided with a spacer corresponding to the slot 6-1. The spacer is used to limit the circumferential rotation of the first washer 5, the clamping plate 3-2, and the base 4-1 on the stud. A flange structure is provided on the outer edge of the first washer 5, corresponding to the spacer section, to increase its strength. Similarly, a flange structure is also provided on the outer edge of the base 4-1, corresponding to the spacer section. A spacer rod is provided on the second washer 8, corresponding to the slot 6-1. The spacer rod is used to limit the circumferential rotation of the second washer 8 on the stud. A nut washer 9 is mounted on the stud to tighten the nut 10.

[0045] See also Figure 1 and Figure 2 In this embodiment, the stud sleeve is provided with two clamping pieces 4, and the two clamping pieces 4 are respectively located on both sides of the clamping plate 3-2, and are respectively used to limit the main line and the auxiliary line of the suspension string 2.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fatigue-resistant hinge type string clamp, characterized in that: It includes: The wire clamp body (3) comprises two wire clamping plates (3-2) that can be opened and closed, and the two wire clamping plates (3-2) are closed to clamp the load-bearing cable (1); A slotted bolt (6), the end of which passes through the two clamping plates (3-2) and is then threadedly connected to a nut (10), and a slotted hole (6-1) is formed on the stud; The suspension string (2) has a free end passing through the slot (6-1) on one side of the clamp body (3) and entering the slot (6-1) on the other side of the clamp body (3) along the outer edge of the clamp body (3); tightening the nut (10) to drive the two clamp plates (3-2) to close and clamp the suspension string (2) to the clamp body (3); The clamping piece (4) comprises a base (4-1) sleeved on the stud and a line pressing segment (4-3) provided on the base (4-1), wherein the line pressing segment (4-3) is used for limiting the position of the suspension string (2).

2. The fatigue-resistant hinge type suspension string clamp according to claim 1, characterized in that: At least one opening is provided on the pressing section (4-3), and the opening comprises two deformable wings (4-4) provided on both sides of the pressing section (4-3). After the suspension string (2) is placed in the opening, the two deformable wings (4-4) are driven to close to limit the suspension string (2).

3. The fatigue-resistant hinge type suspension string clamp according to claim 2, characterized in that: A liner (7) is sleeved on the suspension string (2), and the two deformable wings (4-4) are closed to clamp the liner (7).

4. The fatigue-resistant hinge type suspension string clamp according to claim 3, characterized in that: The inner diameter of the liner (7) is greater than the diameter of the suspension string (2).

5. The fatigue-resistant hinge type suspension string clamp according to claim 4, characterized in that: A limiting flange (7-2) is provided at the upper end of the liner (7), and the limiting flange (7-2) abuts against the upper end of the opening to limit the sliding of the liner (7).

6. The fatigue-resistant hinge type suspension string clamp according to claim 2, characterized in that: The two deformable wings (4-4) are closed to clamp the suspension string (2).

7. The fatigue-resistant hinge type string clamp according to claim 1, characterized in that: A first washer (5) is sleeved on the side of the stud close to the nut, and a second washer (8) is sleeved on the side of the stud close to the nut (10); the first washer (5) and the second washer (8) are both provided with grooves on the side facing the suspension string (2) for pressing the suspension string (2) after the nut (10) is tightened.

8. The fatigue-resistant hinge type string clamp according to claim 7, characterized in that: The first washer (5), the clamping plate (3-2) and the base (4-1) are all provided with a middle section corresponding to the slotted hole (6-1), and the middle section is used to limit the circumferential rotation of the first washer (5), the clamping plate (3-2) and the base (4-1) on the stud; A middle rod is provided on the second washer (8) corresponding to the slotted hole (6-1), and the middle rod is used to limit the circumferential rotation of the second washer (8) on the stud.

9. The fatigue-resistant hinge type suspension string clamp according to claim 1, characterized in that: A nut washer (9) is sleeved on the stud for tightening the nut (10).

10. The fatigue-resistant hinge type suspension string clamp according to claim 1, characterized in that: The stud sleeve is provided with two clamping pieces (4), and the two clamping pieces (4) are respectively located on both sides of the clamping plate (3-2) and are respectively used to restrict the main line and the auxiliary line of the suspension string (2).

Images