Bolt-free integral dropper applied to double carrier cables and double contact lines

Abstract

The invention discloses a bolt-free integral dropper applied to double carrier cables and double contact lines, and belongs to the technical field of electrified railway contact networks. Comprising a double-carrier cable clamp, a dropper wire and a double-contact wire clamp, the double-contact wire penetrates through two contact wire clamping grooves in the lower portion of the double-contact wire clamp, a lower heart-shaped ring of the dropper wire penetrates through a lower heart-shaped ring clamping jaw hole in the upper portion of the double-contact wire clamp, and an upper heart-shaped ring of the dropper wire penetrates through an upper heart-shaped ring clamping jaw hole in the lower portion of the double-carrier cable. A lower return wire of the dropper wire is connected to a lower return wire orifice above the double-contact wire dropper wire clamp; the double-carrier-cable clamp is formed by connecting a left double-carrier-cable clamp and a right double-carrier-cable clamp in a coupling mode. The double-contact wire clamp is formed by connecting a left double-contact wire clamp and a right double-contact wire clamp in a coupling mode. Through innovative structural design and material application, the installation convenience, the operation stability, the anti-fatigue performance and the maintenance convenience of the integral dropper with the double carrier cables and the double contact lines are remarkably improved.

Description

Technical Field

[0001] The invention discloses a bolt-free integral suspension chord applied to double load-bearing cables and double contact lines, belonging to the technical field of electrified railway contact networks. Background Art

[0002] Subways usually use direct current power supply, with high operation density and high traction power, which requires the transmission of a large amount of current. Double catenary cables and double contact wires can greatly increase the current-carrying area of the contact network, meet the high current power supply needs of subway trains, and ensure that the trains can obtain sufficient power under conditions such as starting, accelerating, and climbing.

[0003] The existing urban rail contact network uses a double-wire integral string suspension device, and the wire clamp adopts a bolt connection structure. It has many parts, a large overall weight, and is complicated to install. There is a risk of the bolts not being properly tightened. There is also a hidden danger of vibration loosening during long-term operation. In addition, there is a risk of collision between the pantograph and the bolts at small bends due to the super-elevated track, which increases the workload of installation and operation and maintenance.

[0004] Under environmental conditions such as train operation or strong winds, the contact line is prone to violent swing and vibration, causing the heart-shaped ring in the suspension string clamp and the clamp body to be impacted, causing vibration fatigue damage to the parts and reducing their service life. The suspension string wrapped on the heart-shaped ring is also prone to impact and wear with the clamp body during vibration.

[0005] Traditional electrical loop wires are connected to the wire clamp body or terminal by crimping. The crimping part is easily subjected to excessive extrusion pressure, which causes excessive deformation of the metal material, destruction of the internal structure, cracks, embrittlement and other damage. When the electrical wire is damaged or the loop length needs to be adjusted, the crimping method also limits the possibility of reusing the wire clamp body or terminal, resulting in material waste. Summary of the invention

[0006] In order to overcome the above-mentioned shortcomings, the present invention discloses a bolt-free integral suspension chord applied to double load-bearing cables and double contact lines.

[0007] The technical solution of the present invention is as follows: A boltless integral suspension chord applied to double load-bearing cables and double contact wires, comprising a double load-bearing cable clamp, a suspension wire and a double contact wire clamp, wherein the double contact wire clamp is used to connect the double contact wire and the suspension wire, and the double load-bearing cable clamp is used to connect the double load-bearing cables and the suspension wire; The double-loaded cables pass through the two load-bearing cable slots above the double-loaded cable clamp, the upper heart-shaped ring of the suspension string passes through the upper heart-shaped ring claw hole below the double-loaded cable clamp, and the upper return line of the suspension string is connected to the upper return line hole below the double-loaded cable clamp; The double contact wire passes through two contact wire card slots below the double contact wire clamp. The lower heart-shaped loop of the suspension wire passes through the lower heart-shaped loop claw hole above the double contact wire clamp, and the lower return wire of the suspension wire is connected to the lower return wire orifice above the double contact wire clamp. The double messenger wire clamp is composed of a left double messenger wire clamp and a right double messenger wire clamp which are symmetrically arranged left and right. The left double messenger wire clamp and the right double messenger wire clamp are connected by a coupling method. The double contact wire clamp is composed of a left double contact wire clamp and a right double contact wire clamp which are symmetrically arranged left and right. The left double contact wire clamp and the right double contact wire clamp are connected by a coupling method. A claw limiting body is also nested inside the upper heart-shaped loop and the lower heart-shaped loop.

[0008] Preferably, the above-mentioned left double messenger wire clamp includes a left double messenger wire clamp body. Below the left double messenger wire clamp body is an arc-shaped snap groove one. At the arc-shaped end of the snap groove one, a left double messenger wire clamp claw is provided. The left double messenger wire clamp claw and the right double messenger wire clamp claw on the symmetric right double messenger wire clamp are snapped with each other during coupling to form an upper heart-shaped loop claw hole. Below the left double messenger wire clamp body, a semi-circular groove one is provided on one side of the snap groove one; above the semi-circular groove one, a semi-circular groove two is provided; between the semi-circular groove one and the semi-circular groove two, a right trapezoidal slider one is provided, and the inclined surface of the slider one is exposed inward. Among them, the surface of the right trapezoid of the slider one connected to the semi-circular groove one is the longer lower base, and the surface connected to the semi-circular groove two is the shorter upper base; above the left double messenger wire clamp body, a right trapezoidal chute one is provided inside the semi-circular groove one. The shorter upper base of the chute one is at the bottom of the chute, and the longer lower base is at the opening of the chute. A notch one is also provided below the chute one, and the bottom position of the notch one is flush with one end of the semi-circular groove one; the semi-circular groove one, the semi-circular groove two, the slider one and the chute one form a set of functional group one on one side of the left double messenger wire clamp body. Relative to the snap groove one below the left double messenger wire clamp body, another set of functional group two is symmetrically arranged on the other side of the left double messenger wire clamp body. The semi-circular groove one of the functional group one on the left double messenger wire clamp is closely attached to the semi-circular groove one of the functional group two on the symmetric right double messenger wire clamp during coupling. The semi-circular groove one of the functional group two on the left double messenger wire clamp and the semi-circular groove one of the functional group one on the right double messenger wire clamp are also closely attached to each other, forming two upper return wire orifices in total. The semi-circular groove two of the functional group one on the left double messenger wire clamp is closely attached to the semi-circular groove two of the functional group two on the symmetric right double messenger wire clamp during coupling. The semi-circular groove two of the functional group two on the left double messenger wire clamp and the semi-circular groove two of the functional group one on the right double messenger wire clamp are also closely attached to each other, forming two messenger wire card slots in total. The slider 1 of functional group 1 on the left double catenary clamp is inserted into the chute 1 of functional group 2 on the symmetric right double catenary clamp to form a coupling. The slider 1 of functional group 2 on the left double catenary clamp is inserted into the chute 1 of functional group 1 on the symmetric right double catenary clamp to form a coupling. When coupling, the inclined surfaces of the chute and the slider correspond to each other; The left double catenary clamp is coupled with the right double catenary clamp claw of the right double catenary clamp through the left double catenary clamp claw, and the coupling between the slider 1 and chute 1 of the left double catenary clamp and the slider and chute of the right double catenary clamp together form the double catenary clamp.

[0009] Preferably, the above-mentioned left double contact wire clamp includes a left double contact wire body. Above the left double contact wire body is an arc-shaped buckle groove 2. At the arc-shaped end of the buckle groove 2, a left double contact wire clamp claw is provided. The left double contact wire clamp claw and the right contact wire clamp claw on the symmetric right double contact wire clamp are buckled with each other during coupling to form a lower heart-shaped ring claw hole; Above the left double contact wire body, a semi-circular groove body 3 is provided on one side of the buckle groove 2; below the semi-circular groove body 3, a semi-contact wire card slot is provided; between the semi-circular groove body 3 and the semi-contact wire card slot, a right-angled trapezoidal slider 2 is provided, and the inclined surface of the slider 2 is exposed outward. Among them, the surface of the right-angled trapezoid of the slider 2 connected to the semi-circular groove body 3 is the upper base with a long length, and the surface connected to the semi-contact wire card slot is the lower base with a short length; below the left double contact wire body, a right-angled trapezoidal chute 2 is provided inside the semi-circular groove body 3. The upper base with a short length of the chute 2 is located at the bottom of the chute, and the lower base with a long length is located at the opening of the chute. Above the chute 2, a notch 2 is also provided, and the bottom position of the notch 2 is flush with one end of the semi-circular groove body 3; the semi-circular groove body 3, the semi-contact wire card slot, the slider 2 and the chute 2 form a set of functional group 3 on one side of the left double contact wire body. Relative to the buckle 2 below the left double contact wire body, another set of functional group 4 is symmetrically provided on the other side of the left double contact wire body; The semi-circular groove body 3 of functional group 3 on the left double contact wire clamp is closely attached to the semi-circular groove body 3 of functional group 4 on the symmetric right double contact wire clamp during coupling. The semi-circular groove body 3 of functional group 4 on the left double contact wire clamp and the semi-circular groove body 3 of functional group 3 on the right double contact wire clamp also fit together to form two lower return wire orifice openings; The semi-contact wire card slot of functional group 3 on the left double contact wire clamp is closely attached to the semi-contact wire card slot of functional group 4 on the symmetric right double contact wire clamp during coupling. The semi-contact wire card slot of functional group 4 on the left double contact wire clamp and the semi-contact wire card slot of functional group 3 on the right double contact wire clamp also fit closely together to form two contact wire clamps; The slider two of functional group three on the left double contact wire clamp is inserted into the chute two of functional group four on the symmetric right double contact wire clamp to form a coupling; the slider two of functional group four on the left double contact wire clamp is inserted into the chute two of functional group three on the symmetric right contact wire clamp to form a coupling. When coupling, the inclined surfaces of the chute and the slider correspond to each other; The left double contact wire clamp is coupled with the right double contact wire clamp of the right double contact wire clamp through the left double contact wire clamp claw, and the coupling between the slider two and chute two of the left double contact wire clamp and the slider and chute of the right double contact wire clamp together form the double contact wire clamp.

[0010] Preferably, a bevel surface is provided at the connection between the above-mentioned left double messenger wire clamp claw and the snap groove one, and anti-slip lines are provided on the bevel surface for the engagement between the left and right double messenger wire clamp claws; Similarly, a bevel surface is provided at the connection between the left double contact wire clamp claw and the snap groove two, and anti-slip lines are provided on the bevel surface for the engagement between the left and right double contact wire clamp claws.

[0011] Preferably, the above-mentioned claw limiting body is installed in the heart-shaped ring hole by being inlaid through a suspension wire installation groove provided on the heart-shaped ring. A claw limiting hole one is opened at the bottom of the claw limiting body for the shuttling of the upper heart-shaped ring claw and the lower heart-shaped ring claw and hanging on the heart-shaped ring. In this way, the force application point of the heart-shaped ring claw will be located on the heart-shaped ring and can buffer the upward force of the heart-shaped ring claw.

[0012] Preferably, the above-mentioned claw limiting body can be integrally formed in the heart-shaped ring by injection molding process to form an integral with the heart-shaped ring.

[0013] Preferably, a long strip-shaped slot hole one is opened at the upper part of the above-mentioned claw limiting body for reserving space for the deformation of the upper part caused by the force extrusion below the claw limiting body.

[0014] Preferably, the above-mentioned claw limiting body and the heart-shaped ring can be integrally cast.

[0015] Preferably, the above-mentioned claw limiting body includes a claw limiting hole two for passing through the upper heart-shaped ring claw hole and the lower heart-shaped ring claw hole; a long strip-shaped slot hole two for reserving space for the deformation of the upper part caused by the force extrusion below the claw limiting body. Similarly, the force application point of the heart-shaped ring claw will be located on the heart-shaped ring and can buffer the upward force of the heart-shaped ring claw.

[0016] An integral suspension wire applied to double messenger wires and double contact wires provided by the present invention has the following remarkable beneficial effects: 1. Simplify the installation structure and reduce the installation difficulty The traditional double - wire integral suspension clamp device uses a bolt - connection structure, which has many parts and complex installation. There is a risk that the bolts may not be tightened properly or may become loose. Through the design of symmetric left - right coupled clamps (such as the left double - catenary clamp and the right double - catenary clamp, the left double - contact wire clamp and the right double - contact wire clamp), the present invention does not require bolt fixation. Installation can be completed only through the coupling of bosses and sliders, significantly reducing the number of parts and installation steps, lowering the installation difficulty, and improving the installation efficiency.

[0017] 2. Improve operation stability and reduce the risk of vibration and loosening Under the conditions of train operation or strong wind, the traditional bolt - connection structure is prone to vibration and loosening, affecting the stability of the catenary. The coupled - clamp design of the present invention forms a stable connection structure through the close cooperation of the jaws of the left double - catenary clamp and the jaws of the right double - catenary clamp, which can effectively resist vibration and impact, reduce the risk of loosening, and ensure the stable operation of the catenary under complex working conditions.

[0018] 3. Optimize the force - bearing structure and extend the service life During the vibration process of the traditional suspension clamp, the heart - shaped ring and the clamp body are prone to impact and wear, resulting in fatigue damage to the parts. In the present invention, a jaw limiting body is nested inside the heart - shaped ring. The jaw limiting body is integrally cast, with a bushing and a jaw limiting hole inside, which can effectively buffer vibration and impact and reduce wear. At the same time, the slot holes opened in the jaw limiting body reserve space for stress deformation, further improving the anti - fatigue performance and extending the service life of the suspension clamp device.

[0019] 4. Avoid the interference risk between bolts and pantographs Due to the track super - elevation at small bends, the bolts of the traditional bolt - connection structure may interfere with the pantograph, posing a safety hazard. The coupled - clamp design of the present invention completely avoids the use of bolts, eliminates the risk of interference between bolts and pantographs, and improves the operation safety.

[0020] 5. Improve the reliability of electrical connection The traditional electrical return line uses a crimping - fixation method. The crimping part is prone to deformation, cracking or embrittlement of the metal material due to excessive extrusion, affecting the reliability of electrical connection. The return line of the present invention is directly connected through the return - line holes on the clamp, avoiding the problems brought by the crimping - fixation method, improving the stability and reliability of electrical connection. Moreover, both the double - catenary clamp and the double - contact wire clamp of the present invention have two return - line orifices, extending the service life of the clamp. 6. Facilitate maintenance and reuse When the traditional crimp-fixed electrical loop line is damaged or needs adjustment, it is difficult to reuse, resulting in material waste. The coupling type wire clamp design of the present invention makes the connection between the dropper wire and the return wire more flexible, facilitating disassembly and replacement, supporting the reuse of the wire clamp body and terminals, reducing the maintenance cost and material waste.

[0021] 7. Adapt to complex working conditions and improve the overall performance Through the symmetrical design of the double catenary wire clamp and the double contact wire clamp, the present invention can effectively share the mechanical load and electrical load of the catenary, adapting to the large current power supply requirements such as the start, acceleration, and climbing of subway trains. At the same time, the design of the claw limiting body in the heart-shaped loop enhances the anti-vibration and anti-impact capabilities of the device, enabling it to still operate stably under complex working conditions such as strong winds and train vibrations.

[0022] In summary, through innovative structural design and material application, the present invention significantly improves the installation convenience, operation stability, anti-fatigue performance, and maintenance convenience of the overall dropper of the double catenary and double contact wires, having broad application prospects and economic benefits. Brief Description of the Drawings

[0023] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the left double catenary dropper wire clamp of the present invention Figure 1 ; Figure 3 is the structural schematic diagram of the left double catenary dropper wire clamp of the present invention Figure 2 ; Figure 4 is the structural schematic diagram of the coupling of the left double catenary dropper wire clamp and the right double catenary wire clamp of the present invention Figure 1 ; Figure 5 is the structural schematic diagram of the coupling of the left double catenary dropper wire clamp and the right double catenary wire clamp of the present invention Figure 2 ; Figure 6 is the structural schematic diagram of the left double contact wire clamp of the present invention Figure 1 ; Figure 7 is the structural schematic diagram of the left double contact wire clamp of the present invention Figure 2 ; Figure 8 is the structural schematic diagram of the coupling of the left double contact wire clamp and the right double contact wire clamp of the present invention Figure 1 ; Figure 9 is the structural schematic diagram of the coupling of the left double contact wire clamp and the right double contact wire clamp of the present invention Figure 2 ; Figure 10 is the structural schematic diagram of the claw of the left double catenary wire clamp; Figure 11 Schematic diagram of the heart-shaped ring sleeve structure according to an embodiment of the present invention; Figure 12 is Figure 11 a-a cross-sectional view of; Figure 13 Schematic diagram of the heart-shaped ring sleeve structure according to another embodiment of the present invention; Figure 14 is Figure 13 b-b cross-sectional view of; Specific embodiments

[0024] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and should not be used to limit the protection scope of the present invention.

[0025] Embodiment 1, as Figure 1 shown, a boltless integral suspension string applied to double carrier wires and double contact wires, including a double carrier wire clamp 1, a suspension string wire 2, and a double contact wire clamp 3. The double contact wire clamp 3 is used to connect the double contact wire 4 and the suspension string wire 2, and the double carrier wire clamp 1 is used to connect the double carrier wire 5 and the suspension string wire 2; The double carrier wire 5 passes through two carrier wire card slots above the double carrier wire clamp 1. The upper heart-shaped ring of the suspension string wire 2 passes through the upper heart-shaped ring claw hole below the double carrier wire clamp 1, and the upper return wire of the suspension string wire 2 is connected to the upper return wire orifice below the double carrier wire clamp 1; The double contact wire 4 passes through two contact wire card slots below the double contact wire clamp 3. The lower heart-shaped ring of the suspension string wire 2 passes through the lower heart-shaped ring claw hole above the double contact wire clamp 3, and the lower return wire of the suspension string wire 2 is connected to the lower return wire orifice above the double contact wire clamp 3; As Figures 4 - 5 shown, the double carrier wire clamp 1 is composed of a left double carrier wire clamp 11 and a right double carrier wire clamp 12 that are symmetrically arranged left and right, and the left double carrier wire clamp 11 and the right double carrier wire clamp 12 are connected by a coupling method; As Figures 2 - 3 shown, the left double carrier wire clamp 11 includes a left double carrier wire clamp body 111. Below the left double carrier wire clamp body 111 is an arc-shaped snap groove 112. At the arc-shaped end of the snap groove 112 is provided a left double carrier wire clamp claw 113. The left double carrier wire clamp claw 113 and the right double carrier wire clamp claw on the symmetric right double carrier wire clamp 12 are snapped with each other during coupling to form an upper heart-shaped ring claw hole; Below the left double catenary wire clamp body 111, a semi-circular groove body 114 is provided on one side of the snap groove 112; above the semi-circular groove body 114, a semi-circular groove body 115 is provided; between the semi-circular groove body 114 and the semi-circular groove body 115, a right trapezoidal slider 116 is provided, and the inclined surface of the slider 116 is exposed inward. Among them, the surface of the right trapezoid of the slider 116 connected to the semi-circular groove body 114 is the longer lower base, and the surface connected to the semi-circular groove body 115 is the shorter upper base; above the left double catenary wire clamp body 111, a right trapezoidal chute 117 is provided inside the semi-circular groove body 114. The shorter upper base of the chute 117 is at the bottom of the chute, and the longer lower base is at the opening of the chute. There is also a notch 118 below the chute 117, and the bottom position of the notch 118 is flush with one end of the semi-circular groove body 114; the semi-circular groove body 114, the semi-circular groove body 115, the slider 116 and the chute 117 form a functional group 1 on one side of the left double catenary wire clamp body 111. Relative to the snap groove 112 below the left double catenary wire clamp body 111, another set of functional group 2 is symmetrically arranged on the other side of the left double catenary wire clamp body 111; When the semi-circular groove body 114 of the functional group 1 on the left double catenary wire clamp 11 is coupled with the semi-circular groove body 114 of the functional group 2 on the symmetric right double catenary wire clamp 12, they are closely attached to each other. The semi-circular groove body 114 of the functional group 2 on the left double catenary wire clamp 11 and the semi-circular groove body 114 of the functional group 1 on the right double catenary wire clamp 12 are also closely attached to each other, forming two upper return wire orifices in total; When the semi-circular groove body 115 of the functional group 1 on the left double catenary wire clamp 11 is coupled with the semi-circular groove body 115 of the functional group 2 on the symmetric right double catenary wire clamp 12, they are closely attached to each other. The semi-circular groove body 115 of the functional group 2 on the left double catenary wire clamp 11 and the semi-circular groove body 115 of the functional group 1 on the right double catenary wire clamp 12 are also closely attached to each other, forming two catenary wire clamping grooves in total; The slider 116 of the functional group 1 on the left double catenary wire clamp 11 is inserted into the chute 117 of the functional group 2 on the symmetric right double catenary wire clamp 12 to form a coupling. The slider 116 of the functional group 2 on the left double catenary wire clamp 11 is inserted into the chute 117 of the functional group 1 on the symmetric right double catenary wire clamp 12 to form a coupling. When coupling, the inclined surfaces of the chute and the slider correspond to each other; The left double catenary wire clamp 11 is coupled with the right double catenary wire clamp claw of the right double catenary wire clamp through the left double catenary wire clamp claw 113, and the coupling between the slider 116, the chute 117 of the left double catenary wire clamp 11 and the slider and chute of the right double catenary wire clamp together form a double catenary wire clamp.

[0026] Such as Figures 8 - 9As shown, the double contact wire clamp 3 is composed of a left double contact wire clamp 31 and a right double contact wire clamp 32 which are symmetrically arranged left and right. The left double contact wire clamp 31 and the right double contact wire clamp 32 are connected by a coupling method; As Figures 6 - 7 shown, the above-mentioned left double contact wire clamp 31 includes a left double contact wire body 311. Above the left double contact wire body 311 is an arc-shaped buckle groove two 312. At the arc-shaped end of the buckle groove two 312, a left double contact wire clamp claw 313 is provided. The left double contact wire clamp claw 313 and the right contact wire clamp claw on the symmetric right double contact wire clamp 32 are buckled with each other during coupling to form a lower heart-shaped ring claw hole; Above the left double contact wire body 311, a semi-circular groove body three 314 is provided on one side of the buckle groove two 312; below the semi-circular groove body three 314, a semi-contact wire clamping groove 315 is provided; between the semi-circular groove body three 314 and the semi-contact wire clamping groove 315, a right-angled trapezoidal slider two 316 is provided. The inclined surface of the slider two 316 is exposed outward. Among them, the surface of the right-angled trapezoid of the slider two 316 connected to the semi-circular groove body three 314 is the upper base with a long length, and the surface connected to the semi-contact wire clamping groove 315 is the lower base with a short length; below the left double contact wire body 311, a right-angled trapezoidal chute two 317 is provided inside the semi-circular groove body three 314. The upper base with a short length of the chute two 317 is located at the bottom of the chute, and the lower base with a long length is located at the opening of the chute. Above the chute two 317, a notch two 318 is also provided. The bottom position of the notch two 318 is flush with one end of the semi-circular groove body three 314; the semi-circular groove body three 314, the semi-contact wire clamping groove 315, the slider two 316 and the chute two 317 form a functional group three on one side of the left double contact wire body 311. Relative to the buckle two 312 below the left double contact wire body 311, another functional group four is symmetrically arranged on the other side of the left double contact wire body 311; The semi-circular groove body three 314 of the functional group three on the left double contact wire clamp 31 and the semi-circular groove body three 314 of the functional group four on the symmetric right double contact wire clamp 32 are closely attached to each other during coupling. The semi-circular groove body three 314 of the functional group four on the left double contact wire clamp 31 and the semi-circular groove body three 314 of the functional group three on the right double contact wire clamp 32 are also attached to each other to form two lower return wire orifice openings; The semi-contact wire clamping groove 315 of the functional group three on the left double contact wire clamp 31 and the semi-contact wire clamping groove 315 of the functional group four on the symmetric right double contact wire clamp 32 are closely attached to each other during coupling. The semi-contact wire clamping groove 315 of the functional group four on the left double contact wire clamp 31 and the semi-contact wire clamping groove 315 of the functional group three on the right double contact wire clamp 32 are also closely attached to each other to form two contact wire clamps; The slider two 316 of functional group three on the left double contact wire clamp 31 is inserted into the chute two 317 of functional group four on the symmetric right double contact wire clamp 32 to form a coupling; the slider two 316 of functional group four on the left double contact wire clamp 31 is inserted into the chute two 317 of functional group three on the symmetric right contact wire clamp 32 to form a coupling. When coupling, the inclined surfaces of the chute and the slider correspond to each other. The left double contact wire clamp 31 is coupled with the right double contact wire clamp claw of the right double contact wire clamp through the left double contact wire clamp claw 313, and the coupling between the slider two 316 and the chute two 317 of the left double contact wire clamp 31 and the slider and chute of the right double contact wire clamp together form the double contact wire clamp.

[0027] As Figure 10 shown, a bevel is provided at the connection between the above-mentioned left double messenger wire clamp claw 113 and the buckle groove one 112, and anti-slip lines are provided on the bevel for the bite between the left and right double messenger wire clamp claws. A bevel 119 is also provided at the connection between the left double contact wire clamp claw 313 and the buckle groove two 312, and anti-slip lines are provided on the bevel 119 for the bite between the left and right double contact wire clamp claws.

[0028] Embodiment 2, as Figures 11 - 12 shown, the above-mentioned claw limiting body 6 is installed in the heart-shaped ring hole by being embedded in a suspension string installation groove 61 provided on the heart-shaped ring. A claw limiting hole one 62 is opened at the bottom of the claw limiting body 6 for the upper and lower heart-shaped ring claws to shuttle through and be hooked on the heart-shaped ring.

[0029] Preferably, the above-mentioned claw limiting body 6 can be integrally formed in the heart-shaped ring by an injection molding process to form a whole with the heart-shaped ring. Preferably, a long strip-shaped slot hole one 63 is opened at the upper part of the claw limiting body 6 for reserving space for the deformation of the upper part caused by the force extrusion below the claw limiting body 6.

[0030] Embodiment 3, as Figures 13 - 14 shown, on the basis of the above-mentioned Embodiment 2, the claw limiting body 6 and the heart-shaped ring can be integrally cast.

[0031] Preferably, the above-mentioned claw limiting body 6 includes a claw limiting hole two 64 for the upper and lower heart-shaped ring claw holes to pass through; a long strip-shaped slot hole two 65 for reserving space for the deformation of the upper part caused by the force extrusion below the claw limiting body 6.

[0032] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. An all-in-one boltless suspension string for dual catenaries and dual contact wires, comprising a dual catenary clamp (1), a suspension string wire (2), and a dual contact wire clamp (3). The dual contact wire clamp (3) is used to connect the dual contact wires (4) and the suspension string wire (2), and the dual catenary clamp (1) is used to connect the dual catenaries (5) and the suspension string wire (2); characterized in that, The dual catenaries (5) pass through two catenary card slots above the dual catenary clamp (1), the upper heart-shaped loop of the suspension string wire (2) passes through the upper heart-shaped loop claw hole below the dual catenary clamp (1), and the upper return wire of the suspension string wire (2) is connected to the upper return wire orifice below the dual catenary clamp (1); The dual contact wires (4) pass through two contact wire card slots below the dual contact wire clamp (3), the lower heart-shaped loop of the suspension string wire (2) passes through the lower heart-shaped loop claw hole above the dual contact wire clamp (3), and the lower return wire of the suspension string wire (2) is connected to the lower return wire orifice above the dual contact wire clamp (3); The dual catenary clamp (1) consists of a left dual catenary clamp (11) and a right dual catenary clamp (12) which are symmetrically arranged left and right, and the left dual catenary clamp (11) and the right dual catenary clamp (12) are connected by a coupling method; The dual contact wire clamp (3) consists of a left dual contact wire clamp (31) and a right dual contact wire clamp (32) which are symmetrically arranged left and right, and the left dual contact wire clamp (31) and the right dual contact wire clamp (32) are connected by a coupling method; A claw limiting body (6) is further nested inside the upper heart-shaped loop and the lower heart-shaped loop.

2. The all-in-one boltless suspension string for dual catenaries and dual contact wires according to claim 1, characterized in that, The left dual catenary clamp (11) includes a left dual catenary clamp body (111). Below the left dual catenary clamp body (111) is an arc-shaped snap groove one (112). At the arc-shaped end of the snap groove one (112), a left dual catenary clamp claw (113) is provided. The left dual catenary clamp claw (113) and the right dual catenary clamp claw on the symmetric right dual catenary clamp (12) are snapped with each other during coupling to form the upper heart-shaped loop claw hole; Below the left double catenary wire clamp body (111), a semi-circular groove body one (114) is provided on one side of the snap groove one (112); a semi-circular groove body two (115) is provided above the semi-circular groove body one (114); a right trapezoidal slider one (116) is provided between the semi-circular groove body one (114) and the semi-circular groove body two (115), and the inclined surface of the slider one (116) is exposed inward. Among them, the surface of the right trapezoid of the slider one (116) connected to the semi-circular groove body one (114) is the longer lower base, and the surface connected to the semi-circular groove body two (115) is the shorter upper base; above the left double catenary wire clamp body (111), a right trapezoidal chute one (117) is provided inside the semi-circular groove body one (114). The shorter upper base of the chute one (117) is located at the bottom of the chute, and the longer lower base is located at the opening of the chute. A notch one (118) is also provided below the chute one (117), and the bottom position of the notch one (118) is flush with one end of the semi-circular groove body one (114); the semi-circular groove body one (114), the semi-circular groove body two (115), the slider one (116) and the chute one (117) form a functional group one on one side of the left double catenary wire clamp body (111). Relative to the snap groove one (112) below the left double catenary wire clamp body (111), another functional group two is symmetrically arranged on the other side of the left double catenary wire clamp body (111); When the semi-circular groove body one (114) of the functional group one on the left double catenary wire clamp (11) is coupled with the semi-circular groove body one (114) of the functional group two on the symmetric right double catenary wire clamp (12), they are closely attached to each other. The semi-circular groove body one (114) of the functional group two on the left double catenary wire clamp (11) and the semi-circular groove body one (114) of the functional group one on the right double catenary wire clamp (12) are also closely attached to each other, forming two upper return wire orifices in total; When the semi-circular groove body two (115) of the functional group one on the left double catenary wire clamp (11) is coupled with the semi-circular groove body two (115) of the functional group two on the symmetric right double catenary wire clamp (12), they are closely attached to each other. The semi-circular groove body two (115) of the functional group two on the left double catenary wire clamp (11) and the semi-circular groove body two (115) of the functional group one on the right double catenary wire clamp (12) are also closely attached to each other, forming two catenary wire clamping grooves in total; The slider one (116) of the functional group one on the left double catenary wire clamp (11) is inserted into the chute one (117) of the functional group two on the symmetric right double catenary wire clamp (12) to form a coupling. The slider one (116) of the functional group two on the left double catenary wire clamp (11) is inserted into the chute one (117) of the functional group one on the symmetric right double catenary wire clamp (12) to form a coupling. When coupling, the inclined surfaces of the chute and the slider correspond to each other; The left double catenary wire clamp (11) is coupled with the right double catenary wire clamp claw of the right double catenary wire clamp through the left double catenary wire clamp claw (113), and the coupling between the slider one (116) and the chute one (117) of the left double catenary wire clamp and the slider and chute of the right double catenary wire clamp together form the double catenary wire clamp.

3. The boltless integral suspension string applied to double catenaries and double contact wires according to claim 1, characterized in that The left double contact wire clamp (31) includes a left double contact wire body (311). Above the left double contact wire body (311) is an arc-shaped snap groove two (312). At the arc-shaped end of the snap groove two (312) is provided a left double contact wire clamp claw (313). The left double contact wire clamp claw (313) and the right contact wire clamp claw on the symmetric right double contact wire clamp (32) are snapped with each other during coupling to form a lower heart-shaped ring claw hole. Above the left double contact wire body (311), a semi-circular groove body three (314) is provided on one side of the snap groove two (312); below the semi-circular groove body three (314) is provided a semi-contact wire card slot (315); between the semi-circular groove body three (314) and the semi-contact wire card slot (315) is provided a right-angled trapezoidal slider two (316). The inclined surface of the slider two (316) is exposed outward. Among them, the surface of the right-angled trapezoid of the slider two (316) connected to the semi-circular groove body three (314) is the upper base with a longer length, and the surface connected to the semi-contact wire card slot (315) is the lower base with a shorter length; below the left double contact wire body (311), a right-angled trapezoidal chute two (317) is provided inside the semi-circular groove body three (314). The upper base with a shorter length of the chute two (317) is located at the bottom of the chute, and the lower base with a longer length is located at the opening of the chute. Above the chute two (317) is also provided a notch two (318). The bottom position of the notch two (318) is flush with one end of the semi-circular groove body three (314); the semi-circular groove body three (314), the semi-contact wire card slot (315), the slider two (316) and the chute two (317) form a functional group three on one side of the left double contact wire body (311). Relative to the snap groove two (312) below the left double contact wire body (311), another functional group four is symmetrically arranged on the other side of the left double contact wire body (311). The semi-circular groove body three (314) of the functional group three on the left double contact wire clamp (31) is closely attached to the semi-circular groove body three (314) of the functional group four on the symmetric right double contact wire clamp (32) during coupling. The semi-circular groove body three (314) of the functional group four on the left double contact wire clamp (31) and the semi-circular groove body three (314) of the functional group three on the right double contact wire clamp (32) are also attached to each other to form two lower return wire orifice openings. When the semi-contact wire slot (315) of functional group three on the left double contact wire clamp (31) is coupled with it, the semi-contact wire slot (315) of functional group four on the symmetric right double contact wire clamp (32) is closely attached to each other during coupling. The semi-contact wire slot (315) of functional group four on the left double contact wire clamp (31) and the semi-contact wire slot (315) of functional group three on the right double contact wire clamp (32) are also closely attached to each other, forming two contact wire slots; The slider two (316) of functional group three on the left double contact wire clamp (31) is inserted into the chute two (317) of functional group four on the symmetric right double contact wire clamp (32) to form a coupling; the slider two (316) of functional group four on the left double contact wire clamp (31) is inserted into the chute two (317) of functional group three on the symmetric right contact wire clamp (32) to form a coupling. During coupling, the inclined planes of the chute and the slider correspond to each other; The left double contact wire clamp (31) is coupled with the right double contact wire clamp claw of the right double contact wire clamp through the left double contact wire clamp claw (313), and the coupling between the slider two (316) and the chute two (317) of the left double contact wire clamp (31) and the slider and chute of the right double contact wire clamp together form a double contact wire clamp.

4. A boltless integral suspension string applied to double catenaries and double contact wires according to claim 2 or 3, characterized in that A bevel (119) is provided at the connection between the left double catenary wire clamp claw (113) and the buckle groove one (112), and anti-slip lines are provided on the bevel (119) for the engagement between the left and right double catenary wire clamp claws; A bevel is also provided at the connection between the left double contact wire clamp claw (313) and the buckle groove two (312), and anti-slip lines are provided on the bevel for the engagement between the left and right double contact wire clamp claws.

5. A boltless integral suspension string applied to double catenaries and double contact wires according to claim 1, characterized in that, The claw limiting body (6) is installed in the heart-shaped ring hole by being embedded through a suspension string installation groove (61) provided on the heart-shaped ring. A claw limiting hole one (62) is opened at the bottom of the claw limiting body (6) for the shuttling of the upper heart-shaped ring claw and the lower heart-shaped ring claw and hanging on the heart-shaped ring.

6. The integral boltless suspension string applied to double catenaries and double contact wires according to claim 5, wherein, The claw limiting body (6) can be integrally formed in the heart-shaped ring by injection molding process and form an integral with the heart-shaped ring.

7. The integral suspension string without bolts applied to double catenaries and double contact wires according to claim 5, wherein A long strip-shaped slot hole one (63) is opened at the upper part of the claw limiting body (6) for reserving space for the deformation of the upper part caused by the force extrusion below the claw limiting body (6).

8. The integral suspension string without bolts applied to double catenaries and double contact wires according to claim 1, wherein, The claw limiting body (6) and the heart-shaped ring can be integrally cast.

9. The integral suspension string without bolts applied to double catenaries and double contact wires according to claim 8, characterized in that, The claw limiting body (6) includes a claw limiting hole two (64) for the penetration of the upper heart-shaped ring claw hole and the lower heart-shaped ring claw hole; a long strip-shaped slot hole two (65) for reserving space for the deformation of the upper part caused by the force extrusion below the claw limiting body (6).

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