Contact line clamp, messenger wire clamp, dropper wire, tooth plate anti-loose type boltless integral dropper and its crimping method

Abstract

The contact wire clamp, the messenger wire clamp, the dropper wire, the tooth plate anti-loose type boltless integral dropper and the crimping method thereof relate to a kind of electrified railway overhead line equipment.The tooth plate anti-loose type boltless integral dropper includes a dropper wire and contact wire clamps and messenger wire clamps connected at both ends thereof, the contact wire clamps include a lower lifting ring, and the messenger wire clamps include an upper lifting ring, the dropper wire includes wire bodies, upper and lower crimping pipes, and upper and lower heart-shaped protective rings, the upper crimping pipe is close to the end of the upper heart-shaped protective ring and is wrapped and compressed on the two wire bodies after folding, and the lower crimping pipe is close to the end of the lower heart-shaped protective ring and is wrapped and compressed on the two wire bodies after folding; the lower lifting ring is connected with the lower heart-shaped protective ring of the dropper wire, and the upper lifting ring is connected with the upper heart-shaped protective ring of the dropper wire, wherein the contact wire clamps and the messenger wire clamps are removed of fastening bolts, the high-speed rail parking time is saved, the dropper wire is crimped by a new crimping method, the integral dropper has higher reliability and longer service life.

Description

Technical Field

[0001] This invention relates to an electrified railway catenary erection device, specifically to a boltless integral dropper. Background Technology

[0002] The function of the overall dropper is to suspend the contact wire evenly on the catenary cable to ensure that the contact wire is at the same height as the rail surface, so that the locomotive can smoothly and stably obtain current during high-speed movement.

[0003] The most commonly used type of overhead contact line in high-speed railways is the stamped integral dropper, which is connected to the contact wire and catenary cable by bolts on the fastening clamp.

[0004] Practice has shown that stamped integral droppers are prone to failure in high-speed rail systems with significant vibrations. To ensure operational safety, timely replacement is necessary. However, replacement work can only be carried out during a power outage on an overhead wire mesh. Completing a single such operation requires four separate disassembly and installation of bolts, consuming valuable downtime. Over time, the frequent handling of faulty stamped integral droppers further reduces downtime. Therefore, developing a new, highly reliable boltless integral dropper is essential to conserve downtime caused by replacing stamped integral droppers. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a contact wire clamp, a catenary clamp, a dropper wire, a toothed anti-loosening boltless integral dropper, and a pressing method thereof that can save high-speed rail power outage time and have high reliability.

[0006] This invention relates to a contact wire clamp, comprising a detachable left and right half contact wire clamp. The left and right half contact wire clamps have identical structures and are joined together about a vertical axis by a positioning clamping device and an anti-loosening device. The positioning clamping device consists of a first positioning clamping pair formed by a first positioning pin extending laterally to the right (with a right-angled trapezoidal horizontal cross-section) connected to the left half contact wire clamp body and a corresponding first positioning groove on the right half contact wire clamp body; and a second positioning clamping pair formed by a second positioning pin extending laterally to the left (with a right-angled trapezoidal horizontal cross-section) connected to the right half contact wire clamp body and a corresponding second positioning groove on the left half contact wire clamp body. The clamping assembly consists of two parallel side faces of the first and second positioning pins. The anti-loosening device comprises a first anti-loosening pair consisting of a first upper rack plate located on the right side of the first positioning pin and on the left half of the contact wire suspension clamp body, and a first lower rack plate located on the right side of the first positioning groove and below the right half of the contact wire suspension clamp body; and a second anti-loosening pair consisting of a second upper rack plate located on the left side of the second positioning pin and on the right half of the contact wire suspension clamp body, and a second lower rack plate located on the left side of the second positioning groove and below the left half of the contact wire suspension clamp body. First, the plane containing the tooth tip of the second upper straight rack plate is flush with the bottom surface of the first and second positioning pins. The plane containing the tooth root of the first and second lower straight rack plates is flush with the bottom surface of the second and first positioning grooves. Each of the lower layers of the contact wire left half clamp and the contact wire right half clamp has a clamping claw with the transverse axis of the contact wire clamp body as its axis of symmetry. The two clamping claws respectively cooperate with the clamping groove of the clamped contact wire. The lower middle part of the contact wire clamp body has a cuboid shape. Its front sidewall is formed by inserting the sidewall of the second positioning groove connected to the contact wire left half clamp body and the sidewall of the contact wire right half clamp body that cooperates with it. Its rear sidewall is formed by inserting the sidewall of the second positioning groove connected to the contact wire right half clamp body. The first positioning groove sidewall connected to the wire clamp body and the sidewall of the contact wire left half wire clamp body that mates with it are inserted together. The insertion ends of the sidewalls of the first and second positioning grooves are both rectangular. The left end face of the middle part of the contact wire left half wire clamp body and / or the right end face of the middle part of the contact wire right half wire clamp body are provided with a first wire-passing round hole and / or a second wire-passing round hole. The first and second wire-passing round holes are through holes. The contact wire clamp also includes a lower lifting ring. The lower lifting ring is U-shaped and is composed of two open semi-U-shaped hooks. The two semi-U-shaped hooks are integrally formed on the upper ends of the contact wire left half wire clamp and the contact wire right half wire clamp respectively. The angle between the first and second wire-passing round holes and the vertical axis of the contact wire clamp body is 38 degrees.

[0007] The present invention relates to a wire clamp, wherein the diameter of the first and second through holes is 5.2 mm; and the tooth height of the teeth of the first upper straight toothed plate, the first lower straight toothed plate, the second upper straight toothed plate, and the second lower straight toothed plate is 0.5 mm.

[0008] The present invention relates to a contact wire clamp, wherein the lengths of the first positioning pin and the second positioning pin account for 2 / 3 of the total length of the contact wire clamp, the length of the sidewalls of the first and second positioning grooves is 5mm, and the insertion depth of the insertion end of the sidewalls of the first and second positioning grooves is 2mm.

[0009] This invention relates to a catenary clamp, comprising a detachable left and right half-clamp of the catenary. The left and right half-clamps have identical structures and are joined together about a vertical axis of symmetry via a clamping and positioning device and an anti-loosening device. The clamping and positioning device consists of a first clamping and positioning pair consisting of a first positioning pin (horizontally extending to the right with a right-angled trapezoidal cross-section connected to the left half-clamp body) and a corresponding positioning groove on the right half-clamp body; and a second positioning pin (horizontally extending to the left with a right-angled trapezoidal cross-section connected to the right half-clamp body) and a corresponding positioning groove on the left half-clamp body. The device comprises two auxiliary components, wherein the two side faces of positioning pin one and positioning pin two are parallel. The anti-loosening device consists of an anti-loosening auxiliary component one, which is located on the right side of positioning pin one and on the body of the left half of the catenary cable clamp, and an upper straight rack plate one that cooperates with it, located on the right side of positioning groove one and on the body of the right half of the catenary cable clamp; and an anti-loosening auxiliary component two, which is located on the left side of positioning pin two and on the body of the right half of the catenary cable clamp, and an upper straight rack plate two that cooperates with it, located on the left side of positioning groove two and on the body of the left half of the catenary cable clamp. The lower straight rack plates one and two... The plane containing the tooth tip is flush with the top surfaces of the first and second positioning pins. The plane containing the tooth roots of the first and second upper straight rack plates is flush with the top surfaces of the second and first positioning grooves. Each of the upper layers of the left and right half-clamps of the power cable has a semi-cylindrical body with the transverse axis of the power cable clamp body as its axis of symmetry. The inner hole of the cylinder formed by the two semi-cylindrical bodies mates with the power cable. The upper middle part of the power cable clamp body has a cuboid shape. Its rear sidewall is formed by the insertion of the sidewall of the second positioning groove connected to the left half-clamp body and the sidewall of the right half-clamp body that mates with it. Its front sidewall is formed by the sidewall of the first positioning groove connected to the right half-clamp body. The clamp is formed by inserting it into the side wall of the left half of the load-bearing cable clamp body. The insertion ends of the side walls of the positioning grooves one and two are rectangular. The left end face of the middle part of the left half of the load-bearing cable clamp body and / or the right end face of the middle part of the right half of the load-bearing cable clamp body are provided with a wire-passing hole one and / or a wire-passing hole two. The wire-passing holes one and two are through holes. The load-bearing cable clamp also includes a U-shaped upper lifting ring. The upper lifting ring is made of copper-nickel alloy forging. The upper lifting ring is composed of two open semi-U-shaped hooks. The two semi-elliptical hooks are integrally formed at the lower ends of the left half of the load-bearing cable clamp and the right half of the load-bearing cable clamp body, respectively. The angle between the wire-passing holes one and two and the vertical axis of the load-bearing cable clamp body is 38 degrees.

[0010] The present invention relates to a load-bearing cable clamp, wherein the diameter of the first and second threading holes is 5.2 mm. The tooth height of the upper straight toothed plate, the lower straight toothed plate, the upper straight toothed plate, and the lower straight toothed plate is 0.5 mm.

[0011] The present invention relates to a load-bearing cable clamp, wherein the length of the first positioning pin and the second positioning pin accounts for 2 / 3 of the total length of the contact cable clamp, the length of the sidewall of the first and second positioning grooves is 5mm, and the insertion depth of the insertion end of the sidewall of the first and second positioning grooves is 2mm.

[0012] This invention relates to a toothed, anti-loosening, boltless, integral dropper, comprising the contact wire clamp, the load-bearing cable clamp, and the dropper wire as described above. The dropper wire includes a wire body, an upper pressure connector and a lower pressure connector, an upper heart-shaped retaining ring, and a lower heart-shaped retaining ring. The upper and lower heart-shaped retaining rings are made of 316L stainless steel. The upper heart-shaped retaining ring is fitted onto the upper dropper ring, and the lower heart-shaped retaining ring is fitted onto the lower dropper ring. The upper end of the wire body passes around the upper heart-shaped retaining ring and is inserted into and tightened in two threading holes. The lower end of the wire body passes around the lower heart-shaped retaining ring and is inserted into and tightened in the first and second threading holes. The upper pressure connector... The upper and lower pressure tubes are attached close to the end of the upper heart-shaped guard ring and wrapped and pressed tightly onto the two folded wires. A small gap is maintained between the two wires. The upper and lower pressure tubes are each provided with three annular pressure grooves at intervals. The length and width of the annular pressure grooves on the upper pressure tube decrease from the top to the bottom, and the length and width of the annular pressure grooves on the lower pressure tube decrease from the bottom to the top. The curvature of the curved surfaces that contact the upper heart-shaped guard ring and the lower pressure tube are the same.

[0013] The present invention relates to a toothed anti-loosening boltless integral suspension cable, wherein the contact wire clamp body and the load-bearing cable clamp body are both made of the same grade of cast aluminum bronze by investment casting or die forging.

[0014] The present invention discloses a crimping method for a toothed, anti-loosening, boltless integral dropper wire, wherein the crimping of the dropper wire includes the following steps:

[0015] Step 1: Vertical crimping: Press vertically along the center line of the upper crimping tube of the ellipse, so that the two stranded suspension wires inside the upper crimping tube are separated by a small gap, and the two stranded suspension wires being crimped maintain a circular shape.

[0016] Step 2: Horizontal elliptical crimping: Based on Step 1, perform horizontal elliptical crimping on the upper crimping pipe after the crimping in Step 1;

[0017] Step 3: Segmented Step Crimping: Based on Step 2, divide the crimping pipe into three segments and use different crimping forces to crimp the upper crimping pipe after Step 2 in segments and steps. The crimping force increases sequentially from the lower end to the upper end of the upper crimping pipe in three segments.

[0018] Step 4: Repeat steps 1 to 3 to complete the crimping of the lower pressure pipe; when using different crimping forces to press the lower pressure pipe in stages, the crimping force increases sequentially in three stages from the upper end to the lower end of the lower pressure pipe.

[0019] The suspension wire used in the toothed plate anti-loosening boltless integral suspension wire of the present invention is formed by crimping using the above-mentioned crimping method of the toothed plate anti-loosening boltless integral suspension wire.

[0020] The difference between this invention's contact wire clamp and existing technologies lies in the fact that the contact wire clamp structure does not include fastening bolts, thus eliminating the time spent on disassembling and installing fastening bolts, saving high-speed train stopping time and reducing maintenance costs. The left and right halves of the contact wire clamp form a single integrated contact wire clamp with four functions: clamping, anti-loosening, conductivity, and reusability. It clamps the contact wire securely. The angle between the wire-passing hole and the vertical axis of the contact wire clamp body is set to 38 degrees, increasing the distance between the short connecting wire below the suspension cable (i.e., the bent section at the lower end of the wire) and the contact wire, increasing the discharge gap, preventing burns, improving reliability, and extending service life. It is suitable for mass production, improving production efficiency and reducing production costs.

[0021] The difference between this invention's catenary clamp and existing technologies lies in the fact that the catenary clamp structure does not include fastening bolts, thus eliminating the time spent disassembling and installing fastening bolts, saving high-speed train stopping time and reducing maintenance costs. The left and right halves of the catenary clamp form a single contact wire clamp integrating four functions: clamping, anti-loosening, conductivity, and reusability. It clamps the contact wire and sets the angle between the axis of the through hole and the vertical axis of the catenary clamp body to 38 degrees. This increases the distance between the short connecting line on the dropper (i.e., the bent section at the upper end of the line) and the catenary, increasing the discharge gap, preventing burns, improving reliability, and extending service life. It is suitable for mass production, improving production efficiency and reducing production costs.

[0022] The difference between this invention's toothed anti-loosening boltless integral dropper and existing technology lies in that the contact wire clamp includes a lower hanging ring, and the load-bearing cable clamp includes an upper hanging ring. In use, the upper and lower hanging rings are respectively fitted onto the upper and lower heart-shaped protective rings of the dropper wire. The dropper wire includes a wire body; the upper end of the wire body passes around the upper heart-shaped protective ring and is inserted into either the first or second threading hole and pressed tightly. The lower end of the wire body passes around the lower heart-shaped protective ring and is inserted into the first and second threading holes and pressed tightly. A fixed electrical contact is formed between the dropper wire, the load-bearing cable clamp, and the contact wire clamp. The upper pressure tube is close to the end of the upper heart-shaped protective ring and wraps around and presses tightly onto the two folded wire bodies. The lower pressure tube is close to the end of the lower heart-shaped protective ring and wraps around and presses tightly onto the two folded wire bodies. The upper pressure tube... The three annular pressure grooves, spaced apart, transition evenly from large to small from top to bottom. Similarly, the width of the three annular pressure grooves on the lower pressure connector also transitions evenly from large to small from bottom to top. This facilitates the downward transmission of tensile force along the pressure connector and ensures even distribution of the tension throughout the connector, increasing the stress-bearing area. This guarantees that the dropper wire can bear the force as a whole after crimping, without disrupting the original stranded state, preventing unraveling, and avoiding uneven strand lengths. This results in the dropper wire exhibiting optimal stress. The contact wire clamp and catenary clamp structures do not include bolts, avoiding high-speed train downtime caused by disassembling, installing, and tightening bolts. Furthermore, the contact wire clamp and catenary clamp are manufactured using a casting process, suitable for mass production, improving production efficiency and reducing production costs. In this invention, the angle between the axis of the first or second threading hole and the vertical axis of the catenary clamp body is set to 38 degrees, which increases the distance between the short connecting line on the dropper (i.e., the bent section at the upper end of the line) and the contact line. The angle between the axis of the first and second threading holes and the vertical axis of the contact line clamp body is set to 38 degrees, which increases the distance between the short connecting line below the dropper (i.e., the bent section at the lower end of the line) and the contact line, increases the discharge gap, prevents burns, improves reliability, and extends service life.

[0023] The difference between the crimping method of the toothed anti-loosening boltless integral dropper of the present invention and the dropper wire processed by the method and the prior art is that the dropper wire adopts a new crimping method to ensure that the dropper wire can be stressed as a whole after crimping, that is, without destroying the original twisted state, without unraveling the strands, and without the phenomenon of uneven lengths of the strands, so that the dropper wire presents the best stress state.

[0024] The invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a front view of the overall suspension cable of the present invention;

[0026] Figure 2 This is a left view of the overall suspension cable of the present invention;

[0027] Figure 3 for Figure 1 A partial sectional view;

[0028] Figure 4 This is a perspective view of the overall suspension cable of the present invention;

[0029] Figure 5 This is a side view of the contact wire clamp;

[0030] Figure 6 For along Figure 5 A-direction view;

[0031] Figure 7 This is a rear view of the contact wire clamp;

[0032] Figure 8 For along Figure 6 Stepped sectional view of AA;

[0033] Figure 9 This is the front view before the left and right halves of the contact wire clamp are inserted.

[0034] Figure 10 for Figure 9 A three-dimensional image;

[0035] Figure 11 for Figure 9 A 3D view from another direction;

[0036] Figure 12 for Figure 9 A 3D view from another direction;

[0037] Figure 13 This is a schematic diagram showing the distribution of the anti-loosening devices;

[0038] Figure 14 A schematic diagram showing the distribution of the anti-loosening device in another direction;

[0039] Figure 15 This is a bottom view of the contact wire clamp;

[0040] Figure 16 This is the front view after the left and right halves of the contact wire clamp are inserted.

[0041] Figure 17 For along Figure 16 Cross-sectional view of BB in the middle;

[0042] Figure 18 This is a top view of the contact wire clamp;

[0043] Figure 19 This is a schematic diagram of a load-bearing cable clamp;

[0044] Figure 20 For along Figure 19 View B in the middle;

[0045] Figure 21 For along Figure 19 The C-direction view in the middle;

[0046] Figure 22 For along Figure 20 Stepped sectional view of CC;

[0047] Figure 23 This is a schematic diagram before the left half clamp of the catenary cable and the right half clamp of the catenary cable are connected.

[0048] Figure 24 A three-dimensional view of the left half clamp and the right half clamp of the catenary before they are connected.

[0049] Figure 25 for Figure 24 A 3D view from another direction;

[0050] Figure 26 for Figure 24 A 3D view from another direction;

[0051] Figure 27 This is a schematic diagram of a semi-cylindrical body;

[0052] Figure 28 A three-dimensional diagram of a semi-cylindrical body;

[0053] Figure 29 This is a top view of the load-bearing cable clamp;

[0054] Figure 30 This is a schematic diagram showing the connection between the left half clamp and the right half clamp of the catenary.

[0055] Figure 31 For along Figure 31 Cross-sectional view of DD in the middle;

[0056] Figure 32 This is a bottom view of the load-bearing cable clamp. Detailed Implementation

[0057] like Figure 1-4 As shown, the toothed anti-loosening boltless integral suspension 1000 of the present invention includes a suspension line 300, a contact line clamp 100 and a load-bearing cable clamp 200 connected to both ends of the suspension line 300.

[0058] Among them, such as Figure 1-3As shown in Figure 5-18, the contact wire clamp 100 consists of a detachable left half contact wire clamp 1 and a right half contact wire clamp 1'. The left half contact wire clamp 1 and the right half contact wire clamp 1' have the same structure and are inserted together about the vertical axis of symmetry via a positioning clamping device 11 and an anti-loosening device 12. The positioning clamping device 11 is located in the middle layer between the bodies of the left half contact wire clamp 1 and the right half contact wire clamp 1'. The positioning clamping device 11 consists of a first positioning clamping pair 111 and a second positioning clamping pair 112 (see Figure 5-18). Figure 6 The first positioning clamping pair 111 consists of a first positioning pin 1111 and a first positioning groove 1111'. The first positioning pin 1111 extends laterally to the right from the left half of the contact line clamp 1 body. The horizontal cross-section of the first positioning pin 1111 is a right-angled trapezoid. A first positioning groove 1111' is provided on the right half of the contact line clamp 1' body. The first positioning groove 1111' cooperates with the first positioning pin 1111. After the first positioning pin 1111 is inserted into the first positioning groove 1111', there is a gap between the right end face of the first positioning pin 1111 and the right side wall of the first positioning groove 1111'. A second positioning pin 1121' extends laterally to the left from the right half of the contact line clamp 1' body. The horizontal cross-section of the second positioning pin 1121' is a right-angled trapezoid. A second positioning groove 1121 is provided on the left half of the contact line clamp 1 body to cooperate with the second positioning pin 1121'. The second positioning pin 1121' and the second positioning groove 1121 constitute the second positioning clamping pair 112 (see...). Figure 6 The side surface of the first locating pin 1111 is parallel to the side surface of the second locating pin 1121', and there is a gap between them.

[0059] like Figures 6 to 18 As shown, the anti-loosening device 12 consists of a first anti-loosening pair 121 and a second anti-loosening pair 122. A first upper rack plate 1211 is provided on the body of the left half of the contact wire suspension clamp 1', to the right of the first positioning pin 1111. A first lower rack plate 1211', which mates with the first upper rack plate 1211, is provided below the body of the right half of the contact wire suspension clamp 1', to the right of the first positioning groove 1111'. The first upper rack plate 1211 and the first lower rack plate 1211' constitute the first anti-loosening pair 121 (see...). Figure 7 ).like Figure 9 , 10 As shown, a second upper rack plate 1221' is provided on the right half of the contact wire suspension clamp 1' body, to the left of the second positioning pin 1121'. A second lower rack plate 1221, which cooperates with the second upper rack plate 1221', is provided on the lower part of the left half of the contact wire suspension clamp 1' body, to the left of the second positioning groove 1121. The second upper rack plate 1221' and the second lower rack plate 1221 constitute the second anti-loosening pair 122 (see...). Figure 1The first upper spur rack 1211 meshes with the first lower spur rack 1211', and the second upper spur rack 1221' meshes with the second lower spur rack 1221. The tooth height of the first upper spur rack 1211, the first lower spur rack 1211', the second upper spur rack 1221', and the second lower spur rack 1221 is 0.5 mm.

[0060] The plane containing the tooth tip of the first upper rack plate 1211 and the plane containing the tooth root of the first lower rack plate 1211' are flush with the bottom surface of the first locating pin 1111; the plane containing the tooth tip of the second upper rack plate 1221' and the plane containing the tooth root of the second lower rack plate 1221 are flush with the bottom surface of the second locating pin 1121'. The plane containing the tooth root of the first lower rack plate 1211' is flush with the bottom surface of the second locating groove 1121; the plane containing the tooth root of the second lower rack plate 1221 is flush with the bottom surface of the first locating groove 1111'.

[0061] like Figure 1 , 13 As shown, the contact wire clamp 100 also includes a U-shaped lower lifting ring 10, which is composed of two open semi-U-shaped hooks. The two semi-U-shaped hooks are integrally formed on the upper ends of the left half of the contact wire clamp and the right half of the contact wire clamp, respectively.

[0062] The lower layer of the body of the left half of the contact wire clamp 1' is provided with a clamping claw 141, and the lower layer of the body of the right half of the contact wire clamp 1' is provided with a clamping claw 141'. The two clamping claws are symmetrically arranged about the horizontal axis of the contact wire clamp body. The two clamping claws 141 and 141' are respectively connected to the clamping grooves 6001 and 6001' of the clamped contact wire 600 (see...) Figure 2 (to be combined)

[0063] The lower middle part of the contact wire clamp body has a cuboid shape. Its front sidewall 16 is formed by inserting the sidewall 161 of the second positioning groove 1121 connected to the left half of the contact wire clamp 1 body and the sidewall 161' of the right half of the contact wire clamp 1' body (see...). Figure 1 The rear sidewall 17 is formed by the insertion of the sidewall 171' of the first positioning groove 1111' connected to the body of the right half of the contact wire clamp 1' and the sidewall 171 of the body of the left half of the contact wire clamp 1 (see...). Figure 7 The insertion end of the side wall 171' of the first positioning groove 1111' is rectangular, and the insertion end of the side wall 161 of the second positioning groove 1121 is rectangular. The length of the first positioning pin 1111 and the second positioning pin 1121' accounts for 2 / 3 of the total length of the contact wire clamp. The length of the side walls 171' and 161 of the first and second positioning grooves 1111' and 1121 is 5mm, and the insertion depth of the insertion end of the side walls 171' and 161 of the first and second positioning grooves 1111' and 1121 is 2mm.

[0064] A wire-passing hole can be made on the left end face of the middle part of the left half of the contact wire clamp body or on the right end face of the middle part of the right half of the contact wire clamp body. Of course, for ease of processing, one wire-passing hole can also be made at each of the above positions. Figure 8 As shown, in this embodiment, a first threading hole 18 is provided on the left end face of the middle part of the contact wire left half clamp 1 body, and a second threading hole 18' is provided on the right end face of the middle part of the contact wire right half clamp 1' body. Both the first threading hole 18 and the second threading hole 18' are through holes, but they are not connected and are not coaxial. The axis of the first threading hole 18 and the axis of the second threading hole 18' are symmetrical about the horizontal axis of the contact wire clamp body. The diameter of the first threading hole 18 and the second threading hole 18' is 5.2mm, and the angles A and A' between them and the vertical axis of the contact wire dropper clamp body are both 38 degrees. This angle increases the distance between the dropper short connecting line (i.e., the bent section at the lower end of the dropper line body) and the contact wire, increases the discharge gap, and prevents burns.

[0065] like Figure 1-3 As shown in Figures 20-32, the catenary clamp 200 is composed of a detachable left half catenary clamp 2 and a right half catenary clamp 2'. The left half catenary clamp 2 and the right half catenary clamp 2' have the same structure and are inserted together with the vertical axis as the axis of symmetry through a clamping and positioning device 21 and an anti-loosening device 22.

[0066] like Figure 1-3 As shown in Figures 20-32, the clamping and positioning device 21 of the catenary clamp 200 is located in the middle layer between the left half of the catenary clamp 2 body and the right half of the catenary clamp 2' body. The clamping and positioning device 21 of the catenary clamp 200 consists of clamping and positioning pair one 211 and clamping and positioning pair two 212 (see Figure 20-32). Figure 20 The left half of the catenary clamp 2' extends laterally to the right with a positioning pin 2111, whose horizontal cross-section is a right-angled trapezoid. The right half of the catenary clamp 2' has a positioning groove 2111'. The positioning pin 2111 and the positioning groove 2111' cooperate to form a clamping positioning pair 211 (see...). Figure 20 The right half of the catenary clamp 2' extends laterally to the left and has a positioning pin 2121' with a right-angled trapezoidal horizontal cross-section. The left half of the catenary clamp 2' has a positioning groove 2121. The positioning pin 2121' and the positioning groove 2121 cooperate to form a clamping positioning pair 212 (see...). Figure 20 The side surface of locating pin 1 2111 is parallel to the side surface of locating pin 2 2121'.

[0067] like Figures 20 to 25 As shown, the anti-loosening device 22 of the catenary hanger clamp 200 consists of anti-loosening pair 221 (see Figure 1The first anti-loosening pair 221 consists of a lower straight rack plate 2211 located on the right side of the first positioning pin 2111 and on the body of the left half of the catenary cable clamp 2', and an upper straight rack plate 2211' located on the right side of the positioning groove 2111' and on the body of the right half of the catenary cable clamp 2' (see...). Figure 28 The anti-loosening pair 222 consists of a lower straight rack plate 2221' located on the right half of the catenary cable clamp 2' body, which is set to the left of the positioning pin 2121', and an upper straight rack plate 2221 located on the left of the positioning groove 2121 and above the left half of the catenary cable clamp 2' body (see...). Figure 3 The plane containing the tooth tip of the lower straight rack plate 1 2211 is flush with the top surface of the locating pin 1 2111, and the plane containing the tooth tip of the lower straight rack plate 2221' is flush with the top surface of the locating pin 2121'. The plane containing the tooth root of the upper straight rack plate 1 2211' is flush with the top surface of the locating groove 2121, and the plane containing the tooth root of the upper straight rack plate 2221 is flush with the top surface of the locating groove 1 2111'. The tooth height of the lower straight rack plate 1 2211 and the upper straight rack plate 1 2211' is 0.5mm, and the tooth height of the lower straight rack plate 2221' and the upper straight rack plate 2221 is 0.5mm.

[0068] like Figure 22-29 As shown, the catenary clamp 200 also includes a U-shaped upper lifting ring 20, which is composed of two open semi-U-shaped hooks. The two semi-U-shaped hooks are integrally formed at the lower ends of the left half of the catenary clamp and the right half of the catenary clamp, respectively.

[0069] like Figure 20-29 As shown, on the upper layer of the main body of the left half clamp 2 and the right half clamp 2' of the catenary, a semi-cylindrical body is provided on each side with the transverse axis of the catenary clamp body as the axis of symmetry. The cylindrical body composed of the two semi-cylindrical bodies 241 and 241' cooperates with the catenary 700 (see...). Figure 3 The upper middle part of the catenary clamp body has a cuboid shape. Its rear sidewall 26 is formed by the insertion of the sidewall 261 of the positioning groove 2121 connected to the left half of the catenary clamp 2 body and the sidewall 261' of the right half of the catenary clamp 2' body (see...). Figure 2 Its front sidewall 27 is formed by the insertion of the sidewall 271' of the positioning groove 2111' connected to the body of the right half of the catenary clamp 2' and the sidewall 271 of the body of the left half of the catenary clamp 2 (see Figure 1 , 30The insertion ends of the side walls 271' and 261 of positioning groove 1 2111' and positioning groove 2 2121 are all rectangular. The length of positioning pin 1 2111 and positioning pin 2 2121' accounts for 2 / 3 of the total length of the contact wire clamp. The length of the side wall 271' of positioning groove 1 2111' and the side wall 261 of positioning groove 2 2121 is 5mm. The insertion depth of the insertion end is 2mm.

[0070] A threading hole can be made on the left end face of the middle of the left half clamp body or the right end face of the middle of the right half clamp body. Alternatively, one threading hole can be made at each of the above locations. Figure 22 As shown, in this embodiment, a threading hole 28 is provided on the left end face of the middle part of the left half clamp 2 body of the catenary cable, and a threading hole 28' is provided on the right end face of the middle part of the right half clamp 2' body of the catenary cable. The axis of the threading hole 28 and the axis of the threading hole 28' are symmetrical about the horizontal axis of the catenary cable dropper clamp body. Both the threading hole 28 and the threading hole 28' are through holes, but they are not connected and are not coaxial. The diameter of the threading holes 1 and 2 is 5.2mm. The angle B between the axis of the threading hole 28 and the vertical axis of the catenary cable dropper clamp body, and the angle B' between the axis of the threading hole 28' and the vertical axis of the catenary cable dropper clamp body are both 38 degrees. This angle increases the distance between the dropper cable short connecting line (referring to the bent section at the upper end of the dropper cable body) and the catenary cable, increases the discharge gap, and prevents burns.

[0071] In this invention, the cross-sectional shape of the first positioning pin, the second positioning pin, positioning pin one, and positioning pin two are all right trapezoids, and the angle between the inclined plane and the straight plane of the right trapezoid is 5°.

[0072] Among them, such as Figure 1-3As shown, the suspension wire 300 includes a wire body 31, an upper pressure connector 32 and a lower pressure connector 33, an upper heart-shaped protective ring 34, and a lower heart-shaped protective ring 35. The upper heart-shaped protective ring 34 and the lower heart-shaped protective ring 35 are made of 316L stainless steel. The upper heart-shaped protective ring 34 is fitted onto the upper suspension ring 20, and the lower heart-shaped protective ring 35 is fitted onto the lower suspension ring 10. The upper end of the wire body 31 passes around the upper heart-shaped protective ring 34 and is inserted into the first threading hole 28 and pressed tightly. The lower end of the wire body 31 passes around the lower heart-shaped protective ring 34 and is inserted into the first threading hole 18 and pressed tightly. The upper pressure connector 32 is close to the end of the upper heart-shaped protective ring 34 and wraps around and presses tightly onto the two folded wire bodies. The lower pressure connector 33 is close to the end of the lower heart-shaped protective ring 35 and wraps around and presses tightly onto the two folded wire bodies. A small gap is left between the two wire bodies to prevent friction between them. The upper pressure connector 32 has upper pressure holes along its length, and the lower pressure connector 33 has lower pressure holes along its length. The two folded wires at the upper end are pressed into the upper pressure holes, and the two folded wires at the lower end are pressed into the lower pressure holes. After pressing, a blind pressure hole (not shown in the figure) is formed on the contact wire clamp body, and a blind pressure hole (not shown in the figure) is formed on the catenary clamp body. The upper pressure connector 32 has three annular pressure grooves 321 spaced apart, and the lower pressure connector has three annular pressure grooves 331 spaced apart (see...). Figure 1 The three annular grooves have different overall widths and lengths. For example, the lengths of two adjacent annular grooves differ by 0.2 mm, and the widths of two adjacent annular grooves also differ by 0.2 mm. This ensures stepped crimping, thereby reducing local stress concentration in wire crimping, reducing wire breakage, and significantly improving fatigue life.

[0073] The surfaces of the upper lifting ring 20 and the upper heart-shaped guard ring 34 have the same curvature. The surfaces of the lower lifting ring 10 and the lower heart-shaped guard ring 35 have the same curvature.

[0074] In this invention, both the contact wire clamp body and the catenary clamp body are made of the same grade of cast aluminum bronze through investment casting, and the material grade is ZCuAl10Fe3.

[0075] The present invention discloses a novel crimping method for a boltless integral dropper with a toothed anti-loosening type. When crimping the dropper wire, the upper and lower crimping connectors simultaneously employ longitudinal vertical crimping, transverse elliptical crimping, and segmented stepped crimping methods, specifically including the following steps:

[0076] Step 1: Vertical crimping: Using a mold, crimp along the longitudinal center line of the upper crimping tube of the ellipse (i.e., the outer circle contact line of the two wires 31 of the suspension wire, with a cross-section approximately "8"). The two twisted wires (referring to the two folded wires 31) inside the crimping tube are separated by a small gap to avoid contact friction between the two wires. At the same time, it is ensured that the generated horizontal pressure is directed radially towards the center of each of the two twisted wires, so that the two twisted wires remain circular after crimping, remain twisted and do not untangle, and remain twisted to ensure that the entire twisted wire can withstand the tension.

[0077] Step 2: Horizontal elliptical crimping: Based on Step 1, use a mold to press the crimping tube horizontally in an elliptical shape. The purpose is to increase the maximum static friction between the two strands (referring to the two folded wires 31) and the crimping tube when stretching the drop wire, so as to meet the sliding force value requirement of the crimping point specified by the iron standard.

[0078] Step 3: Segmented Stepped Crimping: Divide the upper crimping tube into three segments, each using a different pressure. Use a mold to crimp the tube from Step 2 into a stepped shape. The first segment (the lower end of the upper crimping tube) has the lowest crimping force (not completely crushed), which helps to transfer the tensile force downwards along the crimping tube and distribute the tension evenly along the entire crimping tube, increasing the stress area. The crimping force increases sequentially from the lower end to the upper end of the upper crimping tube in three segments, that is, the pressure increases sequentially from the outlet of the upper crimping tube. This ensures that the tension of the dropper wire can be transferred step by step to the entire length of the upper crimping tube, using the frictional resistance generated along the entire length of the upper crimping tube to balance the tension, rather than just using the frictional resistance generated by the first segment of the crimping tube. The pressure at the three annular crimping grooves shown in the figure is different, with the pressure increasing sequentially from the outlet of the upper crimping tube, resulting in three annular crimping grooves of different widths.

[0079] Step 4: Repeat steps 1 to 3 to complete the crimping of the lower pressure connector; when using different crimping forces to crimp the lower pressure connector in stages, the crimping force should increase in three stages from the top to the bottom of the lower pressure connector, that is, the pressure of each stage should increase in stages from the outlet of the lower pressure connector, so as to ensure that the tension of the dropper wire can be transmitted step by step to the entire length of the lower pressure connector, and the frictional resistance generated by the entire length of the lower pressure connector is used to balance the tension, rather than just using the frictional resistance generated by the first stage of the lower pressure connector to balance the tension.

[0080] like Figure 1-5 As shown, the installation process of the toothed anti-loosening boltless integral hanger of the present invention is as follows:

[0081] (1) Before installing the contact wire clamp 100 and the catenary clamp 200, the dropper wire 300 is prefabricated. The prefabrication of the dropper wire 300 is carried out according to the above crimping method: According to the design requirements, the length of the vertical section (referring to the main dropper wire) and the bending section (referring to the short connecting wire) of the dropper wire body 31 is measured first. The upper crimping tube 32 and the lower crimping tube 33 are installed on the upper and lower ends of the wire body 31 respectively. The upper end of the wire body 31 is wrapped around the heart-shaped protective ring 34 once and then passed out through the upper crimping tube 32. Similarly, the lower end of the wire body 31 is wrapped around the lower heart-shaped protective ring 35 once and then passed out through the lower crimping tube 33. Then, the dropper wire is tightened on the crimping platform and the precise length of the dropper wire is measured. It is ensured that there is a specified gap between the lower crimping tube 33 and the lower heart-shaped protective ring 35, and there is also a specified gap between the upper crimping tube 32 and the upper heart-shaped protective ring 34. Then, under the specified pressure, a mold that can meet the above pressing method is used. The upper and lower parts of the mold are closed, and the upper and lower pressing pipes are pressed. After the upper and lower pressing pipes undergo plastic deformation, a suspension wire with heart-shaped protective rings and short connecting wires at both ends is successfully prefabricated.

[0082] (2) Install contact wire clamp 100:

[0083] The lower hanging ring 10 is fitted onto the lower heart-shaped protective ring 35. Then, the lower end of the wire body 31 is inserted into the left end of the first wire-passing hole 18 of the left half of the contact wire clamp 1 and exits through the right end. It is then inserted into the left end of the second wire-passing hole 18' of the right half of the contact wire clamp 1' and exits through the right end. The clamping groove 6001 of the contact wire 600 is then engaged with the clamping claw 141 of the body of the left half of the contact wire clamp 1. The clamping claw 141' of the body of the right half of the contact wire clamp 1' is then engaged with the clamping groove 6001' of the contact wire 600. A clamping tool is used to push the clamps together, causing the left half of the contact wire clamp 1 and the right half of the contact wire clamp 1' to insert into each other. Figure 12 , 13 As shown, during insertion, the inclined surface of the first positioning pin 1111 moves along the inclined surface of the first positioning groove 1111', and the inclined surface of the second positioning pin 1121' moves along the inclined surface of the second positioning groove 1121. The rack plate also engages and moves forward synchronously until the end faces of the left and right half-clamps are completely flush. At this point, the left and right half-clamps clamp the contact wire, and the upper and lower rack plates are fully engaged. The two open half-U-shaped hooks combine to form a complete inverted U-shaped hook, i.e., the lower lifting ring 10. The lower heart-shaped guard ring, which is pressed together with the suspension wire, can swing freely within the U-shaped hook. The two half-clamps also form a complete contact wire clamp with four functions (clamping, anti-loosening, conductivity, and reusability), and clamp the contact wire.

[0084] (3) Install the load-bearing cable clamp 200:

[0085] The upper lifting ring 20 is fitted onto the upper heart-shaped protective ring 34. Then, the upper end of the line 31 is inserted through the left end of the threading hole 28 of the left half clamp 2 and exits through the right end, and then inserted through the left end of the threading hole 28' of the right half clamp 2' and exits through the right end. The catenary 700 is then placed into the semi-cylindrical body 241 of the left half clamp 1 and fitted together. The semi-cylindrical body 241' of the right half clamp 2' is then fitted together with the catenary 700, and a clamping tool is used to push them together so that the left half clamp 2 and the right half clamp 2' insert into each other and combine. Figure 25 , 26 As shown, during insertion, the inclined surface of positioning pin 1 2111 moves along the inclined surface of positioning groove 1 2111', and the inclined surface of positioning pin 2121' moves along the inclined surface of positioning groove 2121, until the contact surfaces of the left half clamp 2 and the right half clamp 2' of the catenary are completely flush and clamp the catenary 700. At this time, the upper and lower straight rack plates are also fully engaged, and the two open semi-U-shaped hooks combine to form a complete U-shaped hook, namely the upper lifting ring 20. The upper heart-shaped guard ring, which is pressed into the suspension wire, can swing freely within the semi-elliptical hook. The two half clamp pieces also form a complete catenary clamp with four functions (clamping, anti-loosening, conductivity, and reusability), and clamp the catenary.

[0086] The functions and principles of the toothed plate anti-loosening boltless integral hanger of this invention are as follows:

[0087] 1. Clamping Capability: The locating pin and locating groove each have a corresponding inclined surface with equal slope. When an external force (clamping force) is applied to insert the two half-dropper wire clamps into each other, the inclined surface of the locating pin moves along the inclined surface of the locating groove. The clamping force along the inclined surface can be decomposed into horizontal and vertical components. The horizontal component causes one half-dropper wire clamp to move forward parallel to the other, allowing them to insert into each other. The vertical component allows the two half-dropper wire clamps to approach each other. When the end faces of the two half-clamps are flush, the contact wire or catenary is clamped, thus achieving clamping of the contact wire and catenary without bolts. This process continues until the contact surfaces of the two half-dropper wire clamps come into contact, ultimately clamping the contact wire or catenary.

[0088] 2. Anti-loosening: In this invention, both the contact wire clamp and the catenary wire clamp are equipped with anti-loosening devices. Each clamp has double-layer anti-loosening measures, with two sets of straight toothed plates arranged at both ends of the clamp. When the ends of the two clamps are flush, the two sets of straight toothed plates can mesh with each other. The reasonable tooth profile design ensures that when the clamp has a tendency to loosen or a reverse force is applied, the toothed plates form a corresponding reverse resistance, preventing the clamp from disengaging on its own and thus achieving an anti-loosening effect.

[0089] 3. Can be repeatedly disassembled and reassembled: When needed, install the disassembly tool on the wire clamp, manually turn the lever of the disassembly tool, the rectangular pin of the disassembly tool pushes against the clamping groove of the other half of the wire clamp and moves forward along the inclined plane, gradually loosening the wire clamp. If the position needs to be moved and reinstalled, it can be reinstalled according to the above installation method.

[0090] 4. Reliable Conductivity: Since the entire dropper is a current-carrying element, current flows through it. To protect the hook and heart-shaped retaining ring hinge point from electrical burns, the dropper wire winds around the heart-shaped retaining ring 360 degrees and exits from the crimped tube outlet. One wire becomes the main dropper wire (the vertical section of the wire), and the other becomes the short connecting wire (the bent section of the wire). The short connecting wire provides a bypass channel for the current to pass through the hook and ring hinge point, thus achieving equipotentiality on both sides of the hinge point. The wire-passing hole is set at a 38° angle, increasing the distance between the short connecting wire and the contact wire, and between the short connecting wire and the catenary, thus increasing the discharge gap and completely solving the problem of electrical burns caused by current passing through the hook and ring hinge point, resulting in high conductivity reliability.

[0091] The toothed, anti-loosening, boltless integral hanger structure of this invention provides the aforementioned clamping, anti-loosening, conductive, and reusable disassembly functions. Because it eliminates the use of bolts, it prevents bolts from loosening during vibration, significantly improving the reliability of the contact network system. The simple and practical clamp structure allows for expansion of the manufacturing process to include both casting and forging, especially die forging, which is suitable for mass production, improving production efficiency and reducing costs.

[0092] Furthermore, this invention employs a novel crimping method to fabricate dropper wires, namely: longitudinal vertical crimping + transverse elliptical crimping + segmented stepped crimping. The dropper wire is a flexible, twisted wire with a single filament diameter of only 0.5mm. Its optimal working condition is to maintain overall stress during the twisted state. When the crimping method is flawed, the dropper wire and short connecting wires within the crimped tube rub and squeeze against each other, causing the original filaments and strands to shift, resulting in unraveling strands and unequal filament and strand lengths. Under tension or repeated bending forces, unequal stress on the filaments and strands occurs. When the stressed filament or strand exceeds its limit (greater than its breaking strength), it will break. The tension then transfers to other filaments and strands, and this cycle repeats, leading to an increase in broken filaments or strands. Reaching a certain critical point, overall breakage occurs. Dropper wires produced using existing crimping methods break after 2 to 3 years of operation, and even those with good performance break after 7 to 8 years. This invention achieves overall stress distribution on the dropper wire after crimping, meaning it does not disrupt the original twisted state, prevents strand breakage, and avoids uneven strand lengths, thus ensuring the optimal stress distribution on the dropper wire and extending its service life.

[0093] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A contact wire clamp (100), characterized in that: It consists of a detachable left half contact wire clamp (1) and a right half contact wire clamp (1'). The left and right half contact wire clamps (1, 1') have the same structure and are inserted together with the vertical axis as the axis of symmetry through a positioning clamping device (11) and an anti-loosening device (12). The positioning clamping device (11) consists of a first positioning pin (1111) with a horizontal cross-section of a right trapezoid that extends laterally to the right and is connected to the body of the left half contact wire clamp (1), and a corresponding positioning pin located on the body of the right half contact wire clamp (1'). The first positioning clamping pair (111) is formed by the first positioning groove (1111') on the body, and the second positioning clamping pair (112) is formed by the second positioning pin (1121') which extends laterally to the left and has a right-angled trapezoidal horizontal cross-section connected to the body of the right half of the contact line clamp (1'), and the second positioning clamping pair (112) which is located on the body of the left half of the contact line clamp (1) and cooperates with it. The two opposing inner surfaces of the first positioning pin (1111) and the second positioning pin (1121') are parallel. The anti-loosening device (12) consists of a first upper straight toothed plate (1211) located on the right side of the first positioning pin (1111) and on the body of the left half of the contact wire suspension clamp (1), and a first lower straight toothed plate (1211') located on the right side of the first positioning groove (1111') and below the body of the right half of the contact wire suspension clamp (1'), forming a first anti-loosening pair (121). It also consists of a second upper straight toothed plate (1221') located on the left side of the second positioning pin (1121') and on the body of the right half of the contact wire suspension clamp (1'), and a second upper straight toothed plate (1221') located on the left side of the second positioning groove (1121) and below the body of the left half of the contact wire suspension clamp (1'), forming a first anti-loosening pair (121). The second anti-loosening pair (122) is composed of the second lower straight rack plate (1221) below the body. The plane where the tooth tops of the first and second upper straight rack plates (1211, 1221') are located is flush with the bottom surface of the first and second positioning pins (1111, 1121'). The plane where the tooth roots of the first and second lower straight rack plates (1211', 1221) are located is flush with the bottom surface of the second and first positioning grooves (1121, 1111'). The lower layer of the body of the left half of the contact wire clamp (1) and the right half of the contact wire clamp (1') is provided with a clamping claw on the horizontal axis of the contact wire clamp body. The two clamping claws (141, 141') respectively cooperate with the clamping groove of the contact wire being clamped. The lower middle part of the contact wire clamp body has a cuboid shape. Its front sidewall (16) is formed by inserting the sidewall (161) of the second positioning groove (1121) connected to the contact wire left half clamp (1) body and the sidewall (161') of the contact wire right half clamp (1') body that cooperates with it. Its rear sidewall (17) is formed by inserting the sidewall (171') of the first positioning groove (1111') connected to the contact wire right half clamp (1') body and the sidewall (171) of the contact wire left half clamp (1) body that cooperates with it. The insertion ends of the sidewalls (171', 161) of the first and second positioning grooves (1111', 1121) are rectangular. The contact wire clamp (100) also includes a lower lifting ring (10). The lower lifting ring is U-shaped and consists of two open semi-U-shaped hooks. The two semi-U-shaped hooks are integrally formed on the upper ends of the left half contact wire clamp and the right half contact wire clamp, respectively. The left end face of the middle part of the body of the left half contact wire clamp (1) and / or the right end face of the middle part of the body of the right half contact wire clamp (1') are provided with a first wire-passing round hole (18) and / or a second wire-passing round hole (18'). The first and second wire-passing round holes are through holes. The angle between the axis of the first and second wire-passing round holes and the vertical axis of the body of the contact wire clamp is 38 degrees.

2. The contact wire clamp according to claim 1, characterized in that: The length of the first positioning pin (1111) and the second positioning pin (1121') accounts for 2 / 3 of the total length of the contact wire clamp. The length of the sidewalls (171', 161) of the first and second positioning grooves (1111', 1121) is 5mm. The insertion depth of the insertion end of the sidewalls (171', 161) of the first and second positioning grooves (1111', 1121) is 2mm.

3. The contact wire clamp according to claim 2, characterized in that: The diameter of the threading hole (18) is 5.2 mm; the tooth height of the first upper straight rack plate (1211), the first lower straight rack plate (1211'), the second upper straight rack plate (1221'), and the second lower straight rack plate (1221) is 0.5 mm.

4. A load-bearing cable clamp (200), characterized in that: It consists of a detachable left half clamp (2) and a right half clamp (2') of the catenary. The left and right half clamps (2, 2') of the catenary have the same structure and are inserted together with the vertical axis as the axis of symmetry by a clamping and positioning device (21) and an anti-loosening device (22). The clamping and positioning device (21) consists of a horizontally extending rightward positioning pin (2111) connected to the body of the left half clamp (2) of the catenary, with a right-angled trapezoidal cross section, and a positioning pin located on the right half clamp of the catenary (2') that cooperates with it. 2') The clamping positioning pair 1 (211) is formed by the positioning groove 1 (2111') on the main body and the positioning pin 2 (2121') with a right-angled trapezoidal horizontal cross section extending to the left and connected to the main body of the right half clamp (2') of the catenary cable, and the clamping positioning pair 2 (212) is formed by the positioning groove 2 (2121) on the main body of the left half clamp (2) of the catenary cable, which cooperates with it. The two vertical surfaces of the positioning pin 1 (2111) and the positioning pin 2 (2121') on their respective inner sides are parallel. The anti-loosening device (22) consists of an anti-loosening pair (221) consisting of a lower straight toothed plate (2211) located on the right side of the positioning pin (2111) and on the body of the left half of the catenary cable clamp (2), and an upper straight toothed plate (2211') located on the right side of the positioning groove (2111') and on the body of the right half of the catenary cable clamp (2'), and an anti-loosening pair (221) consisting of a lower straight toothed plate (2221') located on the left side of the positioning pin (2121') and on the body of the right half of the catenary cable clamp (2'), and an upper straight toothed plate (2221') located on the left side of the positioning groove (2121) and on the body of the left half of the catenary cable clamp (2'). The upper straight rack plate two (2221) forms the anti-loosening pair two (222). The plane where the tooth tops of the lower straight rack plates one and two (2211, 2221') are located is flush with the top surfaces of the positioning pins one and two (2111, 2121'). The plane where the tooth roots of the upper straight rack plates one and two (2211', 2221) are located is flush with the top surfaces of the positioning grooves two and one (2121, 2111'). The upper layer of the body of the left half clamp (2) and the right half clamp (2') of the load-bearing cable is provided with a semi-cylindrical body (241, 241') with the transverse axis of the load-bearing cable clamp body as the axis of symmetry. The inner hole of the cylinder formed by the two semi-cylindrical bodies (241, 241') is matched with the load-bearing cable. The upper middle part of the main body of the catenary clamp has a cuboid shape. Its rear sidewall (26) is formed by inserting the sidewall (261) of the positioning groove two (2121) connected to the main body of the left half catenary clamp (2) and the sidewall (261') of the main body of the right half catenary clamp (2') with it. Its front sidewall (27) is formed by inserting the sidewall (271') of the positioning groove one (2111') connected to the main body of the right half catenary clamp (2') and the sidewall (271) of the main body of the left half catenary clamp (2) with it. The insertion ends of the sidewalls (271', 261) of the positioning groove one and two (2111', 2121) are all rectangular. The catenary clamp (200) also includes an upper lifting ring (20), which is U-shaped and consists of two open semi-U-shaped hooks. The two semi-U-shaped hooks are integrally formed at the lower ends of the left half of the catenary clamp and the right half of the catenary clamp. The left end face of the middle part of the body of the left half of the catenary clamp (2) and / or the right end face of the middle part of the body of the right half of the catenary clamp (2') are provided with a first threading hole (28) and / or a second threading hole (28'). The first and second threading holes are through holes, and the angle between the first and second threading holes and the vertical axis of the body of the catenary clamp is 38 degrees.

5. The load-bearing cable clamp according to claim 4, characterized in that: The diameter of the threading hole 1 (28) is 5.2 mm; the tooth height of the teeth of the lower straight rack plate 1 (2211), the upper straight rack plate 1 (2211'), the lower straight rack plate 2 (2221'), and the upper straight rack plate 2 (2221) is 0.5 mm.

6. The load-bearing cable clamp according to claim 5, characterized in that: The length of the first positioning pin (2111) and the second positioning pin (2121') accounts for 2 / 3 of the total length of the contact wire clamp. The length of the sidewalls (271', 261) of the first and second positioning grooves (2111', 2121) is 5mm. The insertion depth of the insertion end of the sidewalls (271', 261) of the first and second positioning grooves (2111', 2121) is 2mm.

7. A boltless integral dropper with a toothed plate anti-loosening design (1000), characterized in that: Includes the contact wire clamp (100) as described in any one of claims 1-3, the load-bearing cable clamp (200) as described in any one of claims 4-6, and the suspension wire (300), wherein: The suspension wire (300) includes a wire body (31), an upper pressure connector (32) and a lower pressure connector (33), an upper heart-shaped guard ring (34), and a lower heart-shaped guard ring (35). The upper heart-shaped guard ring (34) and the lower heart-shaped guard ring (35) are made of 316L stainless steel. The upper heart-shaped guard ring (34) is fitted onto the upper suspension ring (20), and the lower heart-shaped guard ring (35) is fitted onto the lower suspension ring (10). The upper end of the wire body (31) passes around the upper heart-shaped guard ring (34) and is inserted into the first threading hole (28) or the second threading hole (28') and pressed tightly. The lower end of the wire body (31) passes around the lower heart-shaped guard ring (35) and is inserted into the first threading hole (18) or the second threading hole (18') and pressed tightly. The upper pressure connector (32) is close to the end of the upper heart-shaped guard ring (34). The upper and lower pressure tubes (32 and 33) are respectively provided with three annular pressure grooves (321 and 331). The length and width of the annular pressure groove on the upper pressure tube (32) decrease from the top to the bottom. The length and width of the annular pressure groove on the lower pressure tube (33) decrease from the bottom to the top. The curvature of the surfaces of the upper pressure tube (32), the upper hanging ring (20) and the upper heart-shaped guard ring (34) are the same. The curvature of the surfaces of the lower hanging ring (10) and the lower heart-shaped guard ring (35) are the same.

8. The toothed anti-loosening boltless integral hanger according to claim 7, characterized in that: Both the contact wire clamp body and the catenary clamp body are cast from the same grade of cast aluminum bronze.

9. A crimping method for a toothed, anti-loosening, boltless integral dropper as described in claim 7 or 8, characterized in that: When crimping the drop wire, the following steps are included: Step 1: Vertical crimping: Press vertically along the center line of the upper crimping tube of the ellipse, so that the two stranded suspension wires inside the upper crimping tube are separated by a small gap, and the two stranded suspension wires being crimped maintain a circular shape. Step 2: Horizontal elliptical crimping: Based on Step 1, perform horizontal elliptical crimping on the upper crimping pipe after the crimping in Step 1; Step 3: Segmented Step Crimping: Based on Step 2, divide the crimping pipe into three segments and use different crimping forces to crimp the upper crimping pipe after Step 2 in segments and steps. The crimping force increases sequentially from the lower end to the upper end of the upper crimping pipe in three segments. Step 4: Repeat steps 1 to 3 to complete the crimping of the lower pressure pipe; when using different crimping forces to press the lower pressure pipe in stages, the crimping force increases sequentially in three stages from the upper end to the lower end of the lower pressure pipe.

10. A type of boltless integral dropper wire (300) for a toothed plate anti-loosening type, characterized in that: It is formed by pressing using the press-fitting method of the toothed plate anti-loosening type boltless integral hanger as described in claim 9.

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