WO2023040604A1 - Serre-fil de pendule de ligne de contact, serre-fil de pendule de câble porteur et pendule intégral sans boulon de type anneau de suspension - Google Patents

Serre-fil de pendule de ligne de contact, serre-fil de pendule de câble porteur et pendule intégral sans boulon de type anneau de suspension Download PDF

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Publication number
WO2023040604A1
WO2023040604A1 PCT/CN2022/114238 CN2022114238W WO2023040604A1 WO 2023040604 A1 WO2023040604 A1 WO 2023040604A1 CN 2022114238 W CN2022114238 W CN 2022114238W WO 2023040604 A1 WO2023040604 A1 WO 2023040604A1
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WO
WIPO (PCT)
Prior art keywords
clamp
string clamp
suspension string
suspension
positioning
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PCT/CN2022/114238
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English (en)
Chinese (zh)
Inventor
任兴堂
安金旺
李亚峰
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任兴堂
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Publication of WO2023040604A1 publication Critical patent/WO2023040604A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
    • B60M1/225—Arrangements for fixing trolley wires to supporting-lines which are under tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M1/00—Power supply lines for contact with collector on vehicle
    • B60M1/12—Trolley lines; Accessories therefor
    • B60M1/20—Arrangements for supporting or suspending trolley wires, e.g. from buildings
    • B60M1/22—Separate lines from which power lines are suspended, e.g. catenary lines, supporting-lines under tension

Definitions

  • the invention relates to an electrified railway catenary erection device, in particular to a suspension ring type bolt-less integral suspension string.
  • the overall hanging string adopts the ring-ring connection method (the heart-shaped retaining ring is connected with the lifting ring), because the size of the heart-shaped retaining ring and the lifting ring is limited (if the shape of the heart-shaped retaining ring is too large, the heart-shaped retaining ring will The ring is not restrained in the lifting ring, and the hanging string wrapped around the heart-shaped retaining ring is easy to hit the top of the clamp during vibration, causing the hanging string to wear, and it is easy to break the wire or strand), and now the hanging ring adopts a thickness of 1.5 mm copper alloy plate, because the plate is thin and not wear-resistant, sometimes the ring breaks due to the wear of the ring and becomes too thin or even worn through, and cannot continue, which greatly limits the service life.
  • the boltless integral hanging string device has the following advantages:
  • the strength of the wire clip body is high, which is 2.4 times that of the existing punched wire clip, which overcomes the loosening of bolts caused by the plastic deformation of the punched wire clip.
  • the fatigue life is basically the same as that of the stamping type integral hanging string device.
  • the new type of bolt-free integral hanging string device also has shortcomings.
  • the reason is that the clamp and the hanging string are connected by a ball-socket connection. Due to the limited swing, the hanging string at the front end of the crimping tube is subjected to repeated bending force, which is easy to damage the hanging string, so when the number of fatigue times reaches 3.5 million times, the bending life of the hanging string is limited. broke.
  • the stamping-type integral hanging string device is not wear-resistant, and the swing range of the ball socket of the boltless integral hanging string device is limited, which shortens the bending life of the hanging string. Therefore, be badly in need of a kind of wear-resisting performance height, the contact wire clamp of long life, bearing wire clamp and integral hanging string.
  • the technical problem to be solved by the present invention is to provide a contact wire hanging string clip, a catenary cable hanging string clip and a ring-type boltless integral hanging string with high wear resistance and long service life.
  • the contact wire suspension string clamp of the present invention is composed of a detachable contact wire left half suspension string clamp and a contact wire right half suspension string clamp.
  • the structures of the contact wire left and right half suspension string clamps are the same, and
  • the positioning clamping device and the anti-loosening device are plugged together with the vertical axis as the symmetrical axis.
  • the clamping device consists of a first positioning pin with a right-angled trapezoidal horizontal section extending to the right that is connected to the left half of the suspension string clamp body of the contact wire and a matching pin located on the right half suspension string clamp body of the contact wire.
  • the first positioning and clamping pair composed of the first positioning groove and the second positioning pin with a right-angled trapezoidal horizontal section that is connected to the right half of the suspension string clamp body of the contact line and protrudes laterally to the left and matched with it is located on the contact line.
  • the second positioning and clamping pair is composed of the second positioning groove on the left half suspension string clamp body.
  • the two side surfaces of the first positioning pin and the second positioning pin are parallel and leave a proper gap.
  • the device is composed of the first upper spur rack plate on the right side of the first positioning pin, which is located on the left half of the suspension string clamp body of the contact line, and the matching plate, which is set on the right side of the first positioning groove.
  • the first anti-loosening pair formed by the first lower spur rack plate under the right half suspension string clamp body of the contact wire and the right half suspension string arranged on the left side of the second positioning pin The second upper straight rack plate on the clamp body and the second lower straight rack plate matched with it, which is arranged on the left side of the second positioning groove and located under the left half suspension string clamp body of the contact wire Composed of the second anti-loosening pair, the plane where the tooth tops of the first and second upper straight rack plates are flush with the bottom surface of the first and second positioning pins, the first and second lower straight
  • the plane where the tooth root of the rack plate is located is flush with the bottom surfaces of the second and first positioning grooves, and the lower layer of the body of the left half suspension string clamp of the contact wire and the right half suspension string clamp of the contact wire, so that
  • the horizontal axis of the suspension string clamp body of the contact wire is a symmetrical axis, and a clamping claw is respectively provided.
  • first threaded through hole for disassembly.
  • the right end located on the right half of the contact line, is formed with a second threaded through hole for disassembly.
  • the position of the second threaded through hole is aligned with the right end face of the first positioning pin.
  • the outer shape of the middle and lower part of the clamp body is a cuboid, and its front side wall is composed of the side wall of the second positioning groove connected with the left half suspension string clamp body of the contact wire and the right half suspension string clamp body of the contact wire matched with it.
  • the side wall is inserted and connected, and the rear side wall is inserted by the side wall of the first positioning groove connected with the right half suspension string clamp body of the contact wire and the side wall of the left half suspension string clamp body of the contact wire matched with it.
  • the insertion ends of the side walls of the first and second positioning grooves are semicircular, the left end surface of the middle part of the left half of the contact wire suspension string clamp body, the right half suspension string clamp body of the contact wire
  • the right end face of the middle part is provided with first and second threading round holes respectively, and the first and second The two threading round holes are respectively parallel to the first and second threaded through holes.
  • the first threading round hole and the second threading hole are connected and not coaxial, the distance between the axis of the first threading circular hole and the axis of the second threading circular hole is S, S is greater than 0, and the first threading circular hole and the second threading circular hole are both through holes , the axis of the first threading hole and the axis of the second threading hole take the transverse axis of the contact wire hanging string clip body as the axis of symmetry, the left half of the contact wire hanging string clip, the right half of the contact wire hanging string.
  • the front and rear end surfaces of the upper layer of the body of the wire clip are respectively provided with two half inverted T-shaped holes with the horizontal axis of the contact wire suspension string clip body as the symmetrical axis, and four half inverted T-shaped holes constitute two inverted T-shaped holes.
  • the contact wire suspension string clamp also includes a lower suspension ring, which is made of copper-nickel alloy die forging, and the lower suspension ring includes a lower ring body and an inverted T-shaped connecting column integrally formed at both ends of the lower ring body, The shape of the inverted T-shaped connecting column matches the shape of the inverted T-shaped hole, and can be clamped in the inverted T-shaped hole.
  • the contact wire suspension string clamp of the present invention wherein, the tooth height of the teeth of the first upper spur rack plate, the first lower spur rack plate, the second upper spur rack plate, and the second lower spur rack plate is 0.5mm.
  • the diameters of the first and second threaded through holes are 6mm.
  • the contact wire suspension string clip of the present invention wherein, the angle formed by the straight side surfaces of the first and second positioning pins and the side slopes is 5°, and the angle between the straight sides of the first and second positioning grooves and the side slopes is 5°.
  • the angle formed is 5°.
  • the difference between the contact wire suspension string clamp of the present invention and the prior art is that the front and rear end surfaces of the upper layer of the body of the contact wire left half suspension string clamp and the contact wire right half suspension string clamp body are aligned with the transverse direction of the contact wire suspension string clamp body.
  • the axis is a symmetrical axis, and two semi-inverted T-shaped holes are respectively provided, and each two semi-inverted T-shaped holes form a complete inverted T-shaped hole.
  • the nickel-containing copper alloy is formed by die forging. Before die forging, the nickel is solid-dissolved into the copper matrix, which improves the wear resistance.
  • the lower suspension ring includes the lower ring body and the inverted T-shaped integrally formed at both ends of the lower ring body.
  • the shape of the inverted T-shaped connecting column matches the shape of the inverted T-shaped hole, and can be clamped in the inverted T-shaped hole.
  • the ring is connected with the ring to connect the suspension string clamp and the suspension string of the contact wire, which is a line contact.
  • the design of the lower ring is circular to satisfy the unconstrained vibration of the lower heart-shaped retaining ring, which can eliminate the upper end of the lower heart-shaped retaining ring.
  • the repeated bending force suffered by the hanging string at the lower crimping tube, and the parallel spacing between the two inverted T-shaped connecting columns ensure that the lower heart-shaped retaining ring cannot hit the clamp in any state, which solves the problem of damage to the hanging string problem, prolonging the service life.
  • the catenary cable suspension string clamp of the present invention is composed of a detachable catenary cable left half suspension string clamp and a catenary cable right half suspension string clamp.
  • the structure is the same, and they are inserted together with the vertical axis as the symmetrical axis through the clamping and positioning device and the anti-loosening device.
  • the clamping and positioning device is composed of a positioning pin with a right-angled trapezoidal horizontal section extending to the right that is connected to the left half of the suspension string clamp body of the catenary cable, and a positioning pin that is matched with it and located on the right half of the catenary cable.
  • the clamping and positioning pair 1 composed of the positioning groove 1 on the string clamp body and the locating pin 2 with a right-angled trapezoidal horizontal section protruding horizontally to the left that are connected to the right half of the suspension string clamp body of the catenary cable and cooperating with it
  • the clamping and positioning pair is composed of the positioning groove 2 on the left half of the suspension string clamp body of the catenary cable.
  • the two side faces of the positioning pin 1 and the positioning pin 2 are parallel and leave an appropriate gap.
  • the loosening device consists of the lower spur rack plate on the right side of the positioning pin, located on the left half of the suspension string clamp body of the catenary cable, and the matching one, which is arranged on the right side of the positioning groove.
  • the anti-loosening pair 1 composed of the upper straight rack plate 1 located on the right half of the suspension string clamp body of the catenary cable and the suspension string clamp located on the right half of the catenary cable on the left side of the positioning pin 2
  • the anti-loosening mechanism composed of the lower spur rack plate 2 on the body and the upper spur rack plate 2 matched with it, which is arranged on the left side of the positioning groove 2 and is located on the left half of the suspension string clamp body of the catenary cable.
  • the plane where the tooth tops of the lower straight rack plates 1 and 2 are located is flush with the top surfaces of the positioning pins 1 and 2
  • the plane where the tooth roots of the upper straight rack plates 1 and 2 are located is flush with The top surfaces of the positioning slots 2 and 1 are flush, and the upper layer of the body of the catenary cable left half hanging string clamp and the catenary cable right half hanging string clamp body is connected with the catenary cable hanging string clamp body.
  • the horizontal axis of the horizontal axis is the axis of symmetry, and each is provided with a semi-cylindrical body, and the inner hole of the cylindrical body composed of the two half-cylindrical bodies cooperates with the catenary cable, and the left half of the catenary cable at the left end of the second positioning groove
  • On the clamp body there is a threaded through hole 1 for disassembly, the position of the threaded through hole 1 is aligned with the left end surface of the positioning pin 2, and the right end of the positioning groove 1 is located at the right half of the suspension string clamp body of the bearing cable.
  • Threaded through hole 2 for disassembly is formed on the top, the position of said threaded through hole 2 is aligned with the right end face of said positioning pin 1, and the external shape of the middle and upper part of the suspension string clip body of said bearing cable is a cuboid, and its rear side
  • the wall is formed by inserting the side wall of the positioning groove 2 connected with the body of the left half suspension string clamp of the catenary cable and the side wall of the right half suspension string clamp body of the catenary cable matched with it.
  • the side wall of the first positioning groove connected to the right half of the catenary cable clamp body and the side wall of the left half suspension string clamp body of the catenary cable matched with it are formed by inserting the side wall of the first and second positioning grooves.
  • the insertion ends of the walls are all semicircular, and the left end surface of the middle part of the body of the left half suspension string clamp of the catenary cable and the right end surface of the middle part of the right half suspension string clamp body of the catenary cable are respectively provided with a circular hole for threading. 2.
  • the threading round holes 1 and 2 are respectively parallel to the threaded through holes 1 and 2.
  • the first threading hole is connected with the second threading hole and is not coaxial, the distance between the axis of the threading hole 1 and the axis of the threading hole 2 is S', S' is greater than 0, the threading hole 1 and the threading hole 2
  • the two threading holes are through holes, the axis of threading hole one and the axis of threading hole two take the horizontal axis of the suspension string clamp body of the catenary cable as the axis of symmetry, and the left half suspension string of the catenary cable
  • Two and a half T-shaped holes and four and a half T-shaped holes are respectively arranged on the front and rear end faces of the lower layer of the body of the clamp and the right half of the catenary string clamp, with the transverse axis of the catenary suspension string clamp body as the symmetrical axis Forming a T-shaped hole
  • the catenary cable suspension string clamp also includes
  • the suspension string clip of the present invention wherein the teeth of the lower straight rack plate one, the upper straight rack plate one, the lower straight rack plate two, and the upper straight rack plate two have a tooth height of 0.5mm, and the The diameter of threaded through hole 1 and 2 is 6mm.
  • the inner wall of the semi-cylindrical body is provided with a plurality of corresponding circumferential anti-slip grooves at intervals.
  • the catenary cable suspension string clamp of the present invention wherein, the angle formed by the straight side surfaces of the positioning pins 1 and 2 and the side slopes is 5°, and the angle formed by the side straight surfaces of the positioning grooves 1 and 2 and the side slopes is 5°.
  • the difference between the catenary cable hanging string clip of the present invention and the prior art is that the lower layer of the body of the catenary cable hanging string clip body and the catenary cable hanging string clip body are the same as those of the catenary cable hanging string clip body
  • the horizontal axis is a symmetrical axis, and two and a half T-shaped holes are provided, and four and a half T-shaped holes form two T-shaped holes.
  • the alloy is formed by die forging. Before die forging, nickel is solid-dissolved into the copper matrix, which has high wear resistance.
  • the upper ring includes the upper ring body and T-shaped connecting columns integrally formed at both ends of the upper ring body.
  • the shape of the column matches the shape of the T-shaped hole, and can be clamped in the T-shaped hole.
  • the upper ring and the upper heart-shaped protective ring of the hanging string are sleeved, and the bearing is connected by this ring-to-ring connection.
  • the force cable suspension string clamp is in line contact with the suspension string line.
  • the design of the upper suspension ring is circular to meet the unconstrained vibration of the upper heart-shaped retainer, which can eliminate the hanging of the upper crimping tube at the lower end of the upper heart-shaped retainer.
  • the repeated bending force suffered by the string and the parallel spacing between the two T-shaped connecting posts ensure that the upper heart-shaped guard ring cannot hit the clamp in any state, which solves the problem of damage to the hanging string and prolongs the service life. life.
  • the ring-type bolt-free integral hanging string of the present invention includes a contact wire hanging string clip, a load-bearing cable hanging string clip, and a hanging string, wherein: the hanging string includes a wire body, an upper crimping tube, a lower crimping tube, and an upper core.
  • the heart-shaped retaining ring, the lower heart-shaped retaining ring, the upper heart-shaped retaining ring, and the lower heart-shaped retaining ring are made of 316L stainless steel. Go through the upper heart-shaped retaining ring and insert it into the threading round hole 1 and the threading round hole 2 and clamp it.
  • the lower end of the thread body goes around the lower heart-shaped retaining ring and inserts it into the first threading round hole and the second threading round hole and clamps it.
  • the upper crimping tube is close to the end of the upper heart-shaped retaining ring and wrapped tightly on the folded two wires
  • the lower crimping tube is close to the end of the lower heart-shaped retaining ring and wrapped and compressed on the folded two wires physically.
  • the ring-type boltless integral hanging string wherein the curvature of the curved surface of the upper ring and the upper heart-shaped retaining ring is the same, and the curvature of the curved surface of the lower ring and the lower heart-shaped retaining ring is the same.
  • the ring-type boltless integral hanging string wherein the tensile strength of the contact wire hanging string clip and the catenary cable hanging string clip is ⁇ 17.5 kN, and the fatigue count of the integral hanging string is greater than 7 million times.
  • the contact wire hanging string clamp includes the lower hanging ring
  • the catenary cable hanging string clamp includes the upper hanging ring
  • the upper hanging ring and the lower hanging ring are made of high-strength steel containing nickel elements. It is made of copper alloy and produced by die forging and solid solution treatment. After the upper and lower rings are formed, the surface hardness, strength and wear resistance are completely compatible with the upper and lower heart-shaped rings. The wear resistance is high. When using, put the upper and lower rings together.
  • the lower lifting ring can satisfy the unconstrained vibration of the upper and lower heart-shaped retaining rings, which can eliminate the repeated bending force suffered by the hanging string at the upper crimping pipe at the lower end of the upper heart-shaped retaining ring, and eliminate the lower heart-shaped retaining ring at the upper end.
  • the repeated bending force suffered by the suspension string at the crimping tube, and the parallel spacing between the two T-shaped connecting columns ensure that the upper heart-shaped retaining ring cannot hit the suspension string clip of the load-bearing cable in any state, and the two inverted The parallel spacing between the T-shaped connecting columns ensures that the lower heart-shaped retaining ring cannot hit the contact wire suspension string clamp in any state, which solves the problem of damage to the suspension string and prolongs the service life.
  • the suspension ring type After testing, the suspension ring type has no The fatigue life of the bolt integral suspension device can reach more than 7 million times, which is twice the fatigue life of the existing stamped integral suspension device and the new bolt-free integral suspension device, which greatly improves the service life of the integral suspension device and reduces the The overhaul and replacement cycle will generate great social benefits due to the large amount of hanging strings used as a whole.
  • Fig. 1 is the front view of the suspension ring type boltless integral hanging string of the present invention
  • Fig. 2 is a sectional view along A-A in Fig. 1;
  • Fig. 3 is the left side view of the suspension ring type boltless integral suspension string of the present invention.
  • Fig. 4 is the sectional view along B-B in Fig. 3;
  • Fig. 5 is a sectional view along C-C in Fig. 3;
  • Fig. 6 is the rear view of contact wire hanging string clamp
  • Fig. 7 is a top view of the contact wire hanging string clamp
  • Fig. 8 is a left view of the contact wire hanging string clip
  • Fig. 9 is a sectional view along D-D in Fig. 8.
  • Fig. 10 is a left view before plugging the left half of the suspension string clip of the contact wire and the right half of the suspension string clip of the contact wire;
  • Fig. 11 is a sectional view along E-E in Fig. 10;
  • Figure 12 is a perspective view of the left half of the suspension string clip of the contact wire
  • Fig. 13 is the front view of the left half suspension string clip of the contact wire
  • Fig. 14 is the right side view of the left half suspension string clip of the contact wire
  • Fig. 15 is a view along F direction in Fig. 14;
  • Fig. 16 is the bottom view of the left half suspension string clip of the contact wire
  • Fig. 17 is a perspective view of the right half suspension string clip of the contact wire
  • Fig. 18 is the front view of the right half suspension string clip of the contact wire
  • Fig. 19 is the left view of the right half suspension string clip of the contact wire
  • Figure 20 is a perspective view of the left half of the catenary wire clamp
  • Fig. 21 is the bottom view of the left half suspension string clamp of the catenary cable
  • Fig. 22 is the perspective view of the right half suspension string clamp of the catenary
  • Fig. 23 is the front view of the right half suspension string clip of the catenary
  • Fig. 24 is the left side view of the right half suspension string clip of the catenary cable
  • Fig. 25 is the top view of the right half suspension string clip of the catenary
  • Fig. 26 is the left side view of catenary suspension string clip
  • Figure 27 is a sectional view along G-G in Figure 26;
  • Figure 28 is the rear view of the catenary suspension string clamp
  • Fig. 29 is a bottom view of the catenary hanging string clamp.
  • the ring-type boltless integral hanging string 1000 of the present invention includes a hanging string 300 , a contact wire hanging string clip 100 connected to both ends of the hanging string 300 and a catenary cable hanging string clip 200 .
  • the contact wire suspension string clamp 100 is composed of a detachable contact wire left half suspension string clamp 1 and a contact wire right half suspension string clamp 1'.
  • the structure of the left half hanging string clamp 1 and the right half hanging string clamp 1' is the same, and they are inserted together with the vertical axis as the symmetrical axis through the positioning clamping device 11 and the anti-loosening device 12; the positioning clamping device 11 and the anti-loosening device 12 are located in the middle layer of the body of the left half suspension string clamp 1 and the right half suspension string clamp 1 ′ body of the contact wire.
  • the positioning and clamping device 11 is composed of a first positioning and clamping pair 111 and a second positioning and clamping pair 112 (see FIG. 11 ).
  • the first positioning and clamping pair 111 is composed of a first positioning pin 1111 and a first positioning groove 1111', and a first positioning pin 1111 protrudes laterally from the body of the left half suspension string clamp 1 of the contact line to the right, and the first positioning pin 1111
  • the horizontal section of the horizontal section is a right-angled trapezoid, and the first positioning groove 1111' is arranged on the body of the right half suspension string clip 1' of the contact line.
  • the first positioning groove 1111' matches the first positioning pin 1111, and the first positioning pin 1111 is inserted into the Behind the first positioning groove 1111', there is a gap between the right end surface of the first positioning pin 1111 and the right side wall of the first positioning groove 1111'.
  • a second positioning pin 1121' with a right-angled trapezoidal horizontal section protruding from the body of the right half suspension string clip 1' of the contact line is laterally left.
  • 'Cooperated second positioning groove 1121, the second positioning pin 1121' and the second positioning groove 1121 constitute the second positioning clamping pair 112 (see Figures 9 and 11), the side face of the first positioning pin 1111 and the second positioning The sides of the pin 1121' are parallel with clearance.
  • the anti-loosening device 12 is composed of a first anti-loosening pair 121 and a second anti-loosening pair 122 .
  • the first upper straight rack plate 1211 is arranged on the right side of the first positioning pin 1111, and under the body of the right half suspension string clamp 1' of the contact line, the first positioning groove 1111' The right side is provided with the first lower spur rack plate 1211' matched with the first upper spur rack plate 1211, and the first upper spur rack plate 1211 and the first lower spur rack plate 1211' constitute the first anti-loosening pair 121 (See Figure 6).
  • a second upper straight rack plate 1221' is provided on the body of the right half suspension string clamp 1' of the contact line and on the left side of the second positioning pin 1121', and a second upper straight rack plate 1221' is arranged on the left half suspension string clamp 1
  • the plate 1221 constitutes the second anti-loosening pair 122 (see FIG. 10 ).
  • the first upper spur rack plate 1211 meshes with the first lower spur rack plate 1211'
  • the second upper spur rack plate 1221' meshes with the second lower spur rack plate 1221.
  • the tooth heights of the teeth of the first upper spur rack plate 1211, the first lower spur rack plate 1211', the second upper spur rack plate 1221', and the second lower spur rack plate 1221 are all 0.5mm.
  • the plane where the tooth top of the first upper spur rack plate 1211 is located, the plane where the tooth root of the first lower spur rack plate 1211’ is located is flush with the bottom surface of the first positioning pin 1111; the plane of the second upper spur rack plate 1221’
  • the plane where the tooth top is located and the plane where the tooth root of the second lower spur rack plate 1221 is located are flush with the bottom surface of the second positioning pin 1121 ′.
  • the contact wire hanging string clamp 100 also includes the lower suspension ring 10, the lower suspension ring 10 adopts copper-nickel alloy die forging, as shown in Figure 8, the lower suspension ring 10 includes the lower ring body 101 and the inverted T-shaped connecting columns 102, 102' integrally formed at the two ends of the lower ring body 101, the inverted T-shaped connection
  • the shapes of the pillars 102, 102' match the shape of the inverted T-shaped hole 13, and can be snapped into the two inverted T-shaped holes 13 respectively, and can only be slightly moved during use.
  • the lower layer of the body of the contact line left half hanging string clamp 1 is provided with a clamping claw 141
  • the lower layer of the body of the contact line right half hanging string clamp 1' is provided with a clamping claw 141'
  • the two clamping claws are
  • the horizontal axis of the contact wire suspension string clamp body is symmetrically arranged, and the two clamp claws 141 and 141' are respectively aligned with the clamp grooves 6001 and 6001' of the clamped contact wire 600 (see Figures 2 and 3).
  • a first threaded through hole 15 for disassembly is formed, and the position of the first threaded through hole 15 is aligned with the second positioning position.
  • the outer shape of the middle and lower part of the contact wire suspension string clamp body is a cuboid, and its front side wall 16 is composed of the side wall 161 of the second positioning groove 1121 connected to the contact wire left half suspension string clamp 1 body and the contactor matched with it.
  • the side wall 161' of the right half suspension string clamp 1' body of the line is formed by inserting (see Figure 1), and its rear side wall 17 is connected with the first positioning groove 1111 connected to the body of the right half suspension string clamp 1' of the contact line
  • the side wall 171' of ' and the side wall 171 of the body of the left half hanging string clip 1 body of the contact line matched with it are plugged together (see Figure 6), and the insertion end of the side wall 171' of the first positioning groove 1111' is Semicircle, the insertion end of the side wall 161 of the second positioning groove 1121 is semicircle.
  • the angle formed by the side straight surface of the first positioning pin 1111 and the side inclined surface is 5°, and the angle formed by the side straight surface and the side inclined surface of the first positioning groove 1111' is 5° (not shown in the figure).
  • the angle formed by the side straight surface of the second positioning pin 1121' and the side inclined surface is 5°, and the angle formed by the side straight surface and the side inclined surface of the second positioning groove 1121 is 5° (not shown in the figure).
  • the left end surface of the middle part of the contact wire left half suspension string clamp 1 body, and the right end surface of the middle part of the contact wire right half suspension string clamp 1' body are provided with first and second threading circles respectively.
  • Holes 18, 18', the first and second threading round holes 18, 18' are respectively parallel to the first and second threaded through holes 15, 15', and the string clip 1 is suspended in the left half of the contact wire and the right half of the contact wire
  • the first threading hole 18 is connected to the second threading hole 18' and is not coaxial
  • the axis of the first threading hole 18 is connected to the axis of the second threading hole 18'.
  • the distance between them is S, S is greater than 0, the first threading circular hole 18 and the second threading circular hole 18' are through holes, the axis of the first threading circular hole 18 and the axis of the second threading circular hole 18' are in contact with the line
  • the transverse axis of the hanging string clip body is the axis of symmetry.
  • the catenary cable suspension string clamp 200 consists of a detachable catenary cable left half suspension string clamp 2 and a catenary cable right half suspension string clamp 2' Composition
  • the catenary cable half hanging string clamp 2 and the catenary cable right half hanging string clamp 2' have the same structure, and are inserted through the clamping positioning device 21 and the anti-loosening device 22, taking the vertical axis as the symmetrical axis together.
  • the clamping and positioning device 21 and the anti-loosening device 22 of the suspension string clamp 200 of the catenary cable are located on the body of the suspension string clamp 2 in the left half of the suspension string and the suspension string clamp in the right half. 2' The middle layer of the body.
  • the clamping and positioning device 21 of the catenary hanging string clamp 200 is composed of a clamping and positioning pair one 211 and a clamping and positioning pair two 212 (see FIG. 27 ).
  • the main body of the left half hanging string clip 2 of the catenary cable protrudes laterally to the right, and there is a positioning pin 2111 whose horizontal section is a right-angled trapezoid.
  • Pin 1 2111 and positioning groove 1 2111' cooperate to form a clamping and positioning pair 1 211 (see Figure 27); the body of the right half of the suspension string clamp 2' of the bearing cable extends laterally to the left, and has a positioning position with a right-angled trapezoidal horizontal section.
  • Pin two 2121 ', the catenary left half hanging string clamp 2 body is provided with positioning groove two 2121, and positioning pin two 2121 ', positioning groove two 2121 cooperate to form clamping positioning pair two 212 (seeing figure 27).
  • the straight side faces of alignment pin one 2111 and the side straight faces of alignment pin two 2121' are parallel and leave a gap.
  • the anti-loosening device 22 of the catenary suspension string clamp 200 is composed of an anti-loosening pair 1 221 and an anti-loosening pair 222.
  • the lower straight rack plate 2211 located on the body of the left half of the suspension string clamp 2 of the catenary cable and the right side of the suspension string clamp 2' of the right half of the catenary cable, which is arranged on the right side of the positioning groove 2111'
  • the upper spur rack plate 1 2211' above the body constitutes (see Figure 28), and the anti-loosening pair 222 is formed by the lower straight rack plate 222 on the left side of the positioning pin 2121' and is positioned on the right half of the suspension string clamp 2' body of the bearing cable.
  • the upper straight rack plate two 2221 that is arranged on the left side of positioning groove two 2121 and is positioned on the left half of the catenary wire clamp 2 main body constitutes (seeing figure 3).
  • the plane where the dedendum of the upper spur rack plate one 2211' is flush with the top surface of the positioning groove two 2121, and the plane where the tooth root of the upper spur rack plate two 2221 is flush with the top surface of the positioning groove one 2111'.
  • the lower layer of the body of the catenary cable left half hanging string clamp 2 and the catenary cable right half hanging string clamp 2' are respectively arranged with the transverse axis of the catenary cable hanging string clamp body as a symmetrical axis.
  • the upper suspension ring 20 is made of copper-nickel alloy die forging, and the upper suspension ring 20 includes an upper ring body 201 and T-shaped connecting columns 202, 202' integrally formed at both ends of the upper ring body 201, and the T-shaped connecting columns 202, 202'
  • the shape matches the shape of the T-shaped hole 23, and can be snapped into the two T-shaped holes 23 respectively, and can only be slightly moved during use.
  • the upper layer of the body of the catenary cable left half hanging string clamp 2 and the catenary cable right half hanging string clamp 2' is symmetrical with the transverse axis of the catenary cable hanging string clamp body
  • Each is provided with a semi-cylindrical body, and the cylindrical body composed of the two semi-cylindrical bodies 241, 241' is matched with the catenary cable 700 (see Figure 3).
  • the inner wall of 241 is provided with a plurality of circumferential anti-slip grooves 2411 (seeing figure 20) at intervals, and the inner wall of the semi-cylindrical body 241' of the right half suspension string clamp 2' body of the catenary cable is also provided with corresponding semi-cylindrical body 241.
  • Multiple anti-slip grooves 2411' see Figure 22.
  • the right end of groove 1 2111' is located at the right half of the suspension string clamp 2' of the bearing cable.
  • the threaded through hole 2 25' for disassembly is formed on the body.
  • the outer shape of the middle and upper part of the cable suspension string clamp body is a cuboid, and its rear side wall 26 is composed of the side wall 261 of the positioning groove 2 2121 connected to the left half suspension string clamp 2 body of the load-bearing cable and the load-bearing structure matched therewith.
  • the side wall 261' of the right half of the suspension string clip 2' body of the cable is formed by plugging in (see Figure 2), and its front side wall 27 is connected with the positioning groove 2111 of the right half of the suspension string clip 2' body of the bearing cable.
  • the side wall 271' of ' and the side wall 271 of the left half hanging string clip 2 body of the catenary cable matched with it are formed by inserting, the insertion of the side walls 271', 261 of the first positioning groove 2111' and the second positioning groove 2121
  • the ends are semicircular.
  • the tooth height of the teeth of the lower straight rack plate one 2211 and the upper straight rack plate one 2211 ' is 0.5mm
  • the tooth height of the teeth of the lower straight rack plate two 2221 ' and the upper straight rack plate two 2221 is 0.5mm.
  • the angle formed by the side straight surface and the side slope of positioning pin one 2111, positioning pin two 2121 ' is 5 °
  • the angle formed by the side straight surface and side slope of positioning groove one 2111 ', positioning groove two 2121 is 5 °.
  • the left end face of the middle part of the suspension string clamp 2 body in the left half of the catenary cable is provided with a threading circular hole-28, and the threading circular hole-28 is parallel to the threaded through hole-25, and the right half of the catenary cable
  • the right end face of the middle part of the hanging string clip 2' body is provided with a threading round hole 28', and the threading round hole 28' is parallel to the threaded through hole 225'.
  • the threading round hole 1 28 is connected with the threading round hole 2 28' and is not coaxial.
  • the distance between them is S', S' is greater than 0, the first threading hole 28 and the second threading hole 28' are through holes, and the axis of the first threading hole 28 and the axis of the second threading hole 28' are hung by a load-bearing cable.
  • the transverse axis of the string clamp body is the axis of symmetry.
  • the diameter of the first threaded through hole 15, the second threaded through hole 15', the first threaded through hole 25, and the second threaded through hole 25' is 6mm.
  • the hanging string 300 includes a wire body 31, an upper crimping tube 32 and a lower crimping tube 33, an upper heart-shaped retaining ring 34, a lower heart-shaped retaining ring 35, an upper heart-shaped retaining ring 34, a lower heart-shaped
  • the retaining ring 35 is made of 316L stainless steel, the upper heart-shaped retaining ring 34 is set on the upper suspension ring 20, the lower heart-shaped retaining ring 35 is sleeved on the lower suspension ring 10, and the upper end of the thread body 31 bypasses the upper heart-shaped retaining ring 34 and is inserted into the threading circle.
  • the upper crimping tube 32 is provided with an upper crimping hole of the wire body along its length direction
  • the lower crimping tube 33 is provided with a lower crimping hole of the wire body along its length direction, and the two folded wires at the upper end are crimped to the upper crimping hole of the wire body Inside, the folded two wire bodies located at the lower end are crimped into the crimping holes under the wire body.
  • the upper and lower crimping pipes are provided with 3 annular pressure grooves at intervals, the distance between two adjacent annular pressure grooves is 5mm, and the width of the annular pressure grooves is 5mm.
  • the curvature of the curved surfaces where the upper suspension ring 20 contacts with the upper heart-shaped retaining ring 34 is the same, and the two are in line contact after being stressed.
  • the curvature of the curved surfaces in contact between the lower suspension ring 10 and the lower heart-shaped retaining ring 35 is the same, and the two are in line contact after being stressed.
  • the lower suspension ring 10 includes two inverted T-shaped connecting columns 102 and 102', which can ensure that no matter whether the suspension string is in a tensioned or relaxed state, there is an appropriate gap between the bottom of the lower heart-shaped retaining ring and the top of the suspension string clip body of the contact wire, so as to Make sure that the dropper string cannot hit the top surface of the contact wire dropper clip body at any time.
  • the upper hoisting ring 20 includes two T-shaped connecting columns 202 and 202', which can ensure that the top of the upper heart-shaped retaining ring and the bottom of the catenary wire hoisting string clip body are properly positioned no matter whether the hoisting string is in a tensioned or relaxed state. To ensure that the hanging string cannot hit the bottom surface of the clamp body at any time.
  • the lower ring 10 includes a lower ring body 101.
  • the inner contour shape of the lower ring body 101 is ring-shaped, which can ensure that the lower heart-shaped retaining ring swings arbitrarily in the lower ring without restriction and restraint, thereby ensuring that the hanging string is not affected by the lower crimping tube.
  • the effect of repeated bending force is Similarly, the upper suspension ring 20 includes an upper ring body 201, and the inner contour shape of the upper ring body 201 is ring-shaped, which can ensure that the upper heart-shaped retaining ring swings arbitrarily in the upper suspension ring without restriction and constraint, and then ensures that the suspension string is in the upper suspension ring.
  • the upper crimping tube is not subject to repeated bending forces.
  • the tensile strength of the contact wire hanging string clip 100 and the catenary cable hanging string clip 200 is ⁇ 17.5kN, and the fatigue count of the overall hanging string device is 7 million times.
  • the material of the upper and lower crimping tubes is pure copper, and the material grade is T2.
  • the crimping of the upper and lower crimping tubes and the wire body is crimped by an integral hanging string crimping machine.
  • the pressure is 200kN, and the breaking force after crimping is ⁇ 3.9kN. .
  • the body of the contact wire suspension string clamp and the catenary cable suspension string clamp body use the same grade of cast aluminum bronze, the grade is QCuAl9Fe4Ni4Mn2, and the molding process of the two is investment casting.
  • the upper lifting ring and the upper heart-shaped retaining ring are a pair of friction pairs
  • the lower lifting ring and the lower heart-shaped retaining ring are a pair of friction pairs
  • the upper and lower heart-shaped retaining rings are made of 316L stainless steel
  • the upper and lower lifting rings are made of copper alloy containing nickel Material CuAl10-5-5
  • nickel is solid-dissolved into the copper matrix, and then made by die forging and heat treatment process, which not only refines the grain, but also makes the nickel element evenly distributed in the copper matrix, and its hardness and strength are the same as 316L fit.
  • the suspension string 300 is prefabricated: according to the design requirements, the vertical section and the bend of the line body 31 of the suspension string are first measured.
  • the length of the folded section, the upper and lower ends of the line body 31 are equipped with an upper crimping tube 32 and a lower crimping tube 33 respectively, and the upper end of the line body 31 is wound around the heart-shaped retaining ring 34 for a circle and then passed out from the upper crimping tube 32,
  • the lower suspension ring 10 is sleeved on the lower heart-shaped retaining ring 35, and then the two inverted T-shaped connecting columns 102 and 102' of the lower suspension ring 10 are placed in the inverted T-shaped hole 13 of the wire clip, and then the lower end of the wire body 31 Part of the contact line is passed through the left end and the right end of the first threading hole 18 of the left half hanging string clip 1, and then passed through the left end of the second threading hole 18' of the right half hanging string clip 1' of the contact line and the right end passes through, and then the clamping groove 6001 of the contact wire 600 is matched with the clamping claw 141 of the left half suspension string clamp 1 body of the contact wire, and then the clamp wire of the right half suspension string clamp 1' body of the contact wire Claw 141' cooperates with clamping groove 6001' of contact wire 600, and is pushed with a special tool, so that contact wire left half suspension string clip 1 and contact wire right half suspension string clip 1' are inserted into each other, as shown
  • the slope of the first positioning pin 1111 moves along the slope of the first positioning groove 1111'
  • the slope of the second positioning pin 1121' moves along the slope of the second positioning groove 1121 until it is pushed to the left half of the contact line.
  • the contact end faces of the string clamp 1 and the right half of the contact wire suspension string clamp 1' are in full contact, and at this moment, the first upper spur rack plate 1211 meshes with the first lower spur rack plate 1211 ′, and the second upper spur rack plate 1221' meshes with the second lower spur rack plate 1221, and the sound of the spur rack plate meshing can be heard during insertion.
  • the left half of the contact wire suspension string clamp 1 and the contact wire right half suspension string clamp 1' squeeze the lower end 400 of the wire body into an elliptical clamp (see Figure 2), and the lower suspension ring 10 is vertically erected on the contact wire suspension string
  • the top of the clamp body can be moved slightly, and the contact wire hanging string clamp 100 clamps the contact wire 600 .
  • the upper ring 20 on the upper heart-shaped retaining ring 34 then put the two T-shaped connecting columns 202 and 202' of the upper ring 20 into the T-shaped hole 23 of the wire clamp, and then put the upper end of the wire body 31 Penetrate from the left end of the threading round hole 1 28 of the left half hanging string clip 2 of the catenary cable, pass through the right end, and then pass through the left end of the threading round hole 2 28' of the right half hanging string clip 2' of the catenary cable , the right end is passed through, and then the catenary cable 700 is put into the semi-circular cylinder body 241 of the catenary cable left half hanging string clip 1 body to cooperate with it, and then the catenary cable right half hanging string clip 2' is semi-cylindrical body body 241' cooperates with the catenary cable 700, and pushes it with a special tool, so that the left half suspension string clip 2 of the catenary cable and the right half suspension string clamp 2' of the catenary cable
  • the ring-type bolt-free integral hanging string of the present invention has the following functions:
  • the ring-type bolt-free integral hanging string of the present invention the clamping principle is: the positioning pin and the positioning groove are each provided with a corresponding slope, and the slopes are equal.
  • an external force clamping force
  • the slope of the positioning pin moves along the slope of the positioning groove, and the clamping force along the slope can be decomposed into a horizontal component force and a vertical component force. This allows the two halves of the hanging string clamp to approach each other until the contact surfaces of the two half hanging string clamps touch each other, finally clamping the contact wire or catenary.
  • the boltless contact line hanging string clamp and the boltless force cable hanging string clamp are all equipped with an anti-loosening device formed by meshing upper and lower straight rack plates And the threaded through hole for disassembly, the anti-loosening device can keep the two half-hanging string clamps in a locked state after clamping, and the clamps cannot be released without external force;
  • the two ends of the wire clip can not only form a double anti-loosening, but also make the anti-loosening force evenly distributed on the wire clip, which improves the reliability of the anti-loosening.
  • the threaded through hole for disassembly cooperates with the bolt to separate the locked two half suspension string clamps, which can be reused after separation.
  • the threaded through hole for disassembly shall be sealed with a plastic round head.
  • the plastic round head shall be pulled out, and the matching bolt shall be screwed into the threaded through hole for disassembly, and the bolt shall be screwed into the thread for disassembly.
  • After passing through the hole its end is pressed against the left end face or right end face of the positioning pin.
  • the two half hanging string clips are subjected to a pair of forces of equal magnitude and opposite direction, so that the two halves The half hanging string clips are gradually separated.
  • Both the body of the contact wire suspension string clamp and the catenary cable suspension string clamp body are designed to be symmetrical structures, and a set of molds can be used for production, which can not only reduce processing costs, but also produce good consistency of the clamps, so that The force of the wire clip is more reasonable, and the work is more reliable.
  • the upper end of the thread body penetrates through threading round hole 1 or threading round hole 2, and passes through threading round hole 2 or threading round hole 1.
  • the middle part of the clamping and positioning device clamps and squeezes the wire body into an ellipse, forming a crimping type electrical contact, so that the hanging string A perfect conductive channel is formed between the wire and the suspension string clip of the bearing cable, which improves the conductive reliability of the connection; similarly, the upper end of the lower short connection is crimped with the suspension string wire through the lower crimping tube, and the wire body The lower end enters through the first threading hole or the second threading hole, passes through the second threading hole or the first threading hole, and the left half of the contact wire suspension string clip and the contact wire right half suspension string clip are inserted into each other Finally, because the first threading hole is connected with the second threading hole and is not coaxial, the middle part of the clamping and positioning device clamps and squeezes the wire body into an ellipse, forming a
  • the structure of the ring-type bolt-free integral hanging string of the present invention determines that it has the functions of clamping, anti-loosening, conduction and repeated disassembly. Because no bolts are used, the bolts are avoided from loosening during vibration, and the reliability of the catenary system is greatly improved. sex.
  • the ring-type boltless integral hanging string of the present invention also has the advantages of high static strength and long service life, which can greatly improve the service life, prolong the overhaul and replacement cycle of the integral hanging string, and reduce operating costs. as follows:
  • Ring-type bolt-free overall suspension string when the number of fatigue times reaches 3.5 million times, the wear area of key parts accounts for about 1/10 of the total worn area, and the test can still be continued. When the number of fatigue times reaches 7 million times, the wear area accounts for about 1/10 3/10 of the total worn area can also be used continuously.
  • the ring-type boltless integral hanging string is better than the stamping type integral hanging string device. If the ring-type boltless integral hanging string device is used in operation, the overall hanging string device Long service life, greatly reducing the cost of overhaul operation. In addition, there is no need for inspection during the operation of the bolt-free overall hanging string device, which is especially suitable for the use of catenary in special or complicated environments.
  • the swing angle of the crimping tube is less than 60°. Due to the limited swing, it is easy to make the hanging string Damaged, when the number of times of fatigue reaches 3.5 million times, the bending life of the hanging string has reached the limit and fracture occurs, and the life is not as good as this application.
  • This application adopts the ring-to-ring connection method, except that the properties of the materials selected between the two friction pairs are adapted, and the heart-shaped retaining ring is not restricted in the suspension ring when the catenary vibrates, eliminating the possibility of suspension strings being affected. All factors of wear and tear, thereby improving the service life, and the number of fatigue times has reached more than 7 million times (the standard stipulates that it is 2 million times).
  • Both the suspension string clamp of the contact wire and the suspension string clamp of the bearing cable of the present invention are designed with suspension rings, which are connected with the suspension strings in a ring-to-ring connection mode to form a suspension ring-type bolt-free integral suspension string, and the fatigue life can reach 7 million times
  • the above far exceeding the standard requirements, fully meet the requirements of the application in the electrified railway catenary, it can be produced, manufactured and used on a large scale in the industry, the fatigue life is prolonged, and the consumption of materials required for the production of the overall hanging string is greatly reduced.
  • Great social and economic benefits are designed with suspension rings, which are connected with the suspension strings in a ring-to-ring connection mode to form a suspension ring-type bolt-free integral suspension string

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

Serre-fil de pendule de ligne de contact (100), serre-fil de pendule de câble porteur (200) et pendule intégral sans boulon de type anneau de suspension (1000). Le pendule intégral sans boulon de type anneau de suspension (1000) comprend un fil de pendule (300), et un serre-fil de pendule de ligne de contact (100) et un serre-fil de pendule de câble porteur (200) qui sont reliés à deux extrémités du fil de pendule (300). Le serre-fil de pendule de ligne de contact (100) comprend un anneau de suspension inférieur (10). Le serre-fil de pendule de câble porteur (200) comprend un anneau de suspension supérieur (20). L'anneau de suspension inférieur (10) est relié à un anneau de retenue inférieur en forme de cœur (35) du fil de pendule (300), et l'anneau de suspension supérieur (20) est relié à un anneau de retenue supérieur en forme de cœur (34) du fil de pendule (300).
PCT/CN2022/114238 2021-09-14 2022-08-23 Serre-fil de pendule de ligne de contact, serre-fil de pendule de câble porteur et pendule intégral sans boulon de type anneau de suspension WO2023040604A1 (fr)

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CN202111072228.8A CN113581024A (zh) 2021-09-14 2021-09-14 接触线吊弦线夹、承力索吊弦线夹、吊环式无螺栓整体吊弦
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Publication number Priority date Publication date Assignee Title
CN113581024A (zh) * 2021-09-14 2021-11-02 任兴堂 接触线吊弦线夹、承力索吊弦线夹、吊环式无螺栓整体吊弦
CN114654406B (zh) * 2022-03-23 2023-07-04 中铁建电气化局集团第一工程有限公司 一种用于将吊弦安装到接触线上的安装工装总成

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US5730265A (en) * 1994-07-07 1998-03-24 The Whitaker Corporation Device for suspending an electrical conductor from a carrying cable
CN204586552U (zh) * 2015-04-10 2015-08-26 中法高速铁路技术(西安)有限公司 一种无螺栓载流整体吊弦装置
CN110281818A (zh) * 2019-07-29 2019-09-27 中国铁路总公司 无螺栓锻造型定位线夹
CN210680465U (zh) * 2019-07-29 2020-06-05 中国铁路总公司 无螺栓锻造型整体吊弦
CN111746354A (zh) * 2020-08-05 2020-10-09 西安远航专用装备制造有限公司 新型无螺栓接触线吊弦线夹、新型无螺栓承力索吊弦线夹、新型无螺栓整体吊弦装置
CN113581024A (zh) * 2021-09-14 2021-11-02 任兴堂 接触线吊弦线夹、承力索吊弦线夹、吊环式无螺栓整体吊弦

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5730265A (en) * 1994-07-07 1998-03-24 The Whitaker Corporation Device for suspending an electrical conductor from a carrying cable
CN204586552U (zh) * 2015-04-10 2015-08-26 中法高速铁路技术(西安)有限公司 一种无螺栓载流整体吊弦装置
CN110281818A (zh) * 2019-07-29 2019-09-27 中国铁路总公司 无螺栓锻造型定位线夹
CN210680465U (zh) * 2019-07-29 2020-06-05 中国铁路总公司 无螺栓锻造型整体吊弦
CN111746354A (zh) * 2020-08-05 2020-10-09 西安远航专用装备制造有限公司 新型无螺栓接触线吊弦线夹、新型无螺栓承力索吊弦线夹、新型无螺栓整体吊弦装置
CN113581024A (zh) * 2021-09-14 2021-11-02 任兴堂 接触线吊弦线夹、承力索吊弦线夹、吊环式无螺栓整体吊弦

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