Forged bolt-free dropper wire clamp and adjustable integral dropper

Abstract

The invention relates to the technical field of railway catenary erection equipment, in particular to a forged bolt-free type dropper clamp and an adjustable integral dropper, one end is used for being matched with a dropper, the other end is used for being matched with a carrier cable or a contact line, the forged bolt-free type dropper clamp comprises two half clamps which are detachably connected, and each half clamp comprises a lifting hook and a clamping jaw. When the two half clamps are connected, the two lifting hooks are matched to form a connecting ring matched with a dropper, the two clamping jaws are matched to form a clamping jaw, the clamping jaw has a first form matched with a carrier cable and a second form matched with a contact line, and the two half clamps are symmetrically arranged when connected. The two half clamps comprise inserting blocks and inserting grooves, the inserting blocks are matched with the inserting grooves, when the two half clamps are connected, the inserting block of one half clamp is matched with the inserting groove of the other half clamp in an inserting mode, the stress area of the inserting structure is increased, stress is uniform, the bearing capacity is higher, and the structure is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of railway contact network erection equipment, in particular to a forged boltless type suspension string clamp and an adjustable body suspension string. Background Art

[0002] The overhead contact network is a special form of power transmission line erected above the railway line to supply power to electric locomotives. The integral suspension string is an important component of the contact suspension of the high-speed railway overhead contact network. The upper end of the integral suspension string is connected to the load-bearing cable through the load-bearing cable suspension string clamp, and the lower end is connected to the contact wire through the contact wire suspension string clamp. The load-bearing cable suspension string clamp and the contact wire suspension string clamp are connected by the suspension string.

[0003] The load-bearing cable string clamp and the contact wire string clamp in the prior art are both fixed with bolts. The vibration of the contact suspension system may cause the bolts to loosen, thus causing bow-net failure. Moreover, most of the existing boltless string clamp products are castings, which mainly have defects such as pores, shrinkage cavities, shrinkage, inclusions and cracks. When such parts are subjected to large local forces, they are prone to breakage, i.e. failure, causing safety accidents. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a forged boltless string suspension wire clamp and an adjustable body string suspension. The wire clamp of the present invention is formed by two symmetrical half-clamps plug-in together. Both half-clamps have plug-in blocks and plug-in grooves. When the two half-clamps are plugged in, the plug-in block and the plug-in groove of one half-clamp are plug-in matched with the plug-in groove and the plug-in block corresponding to the other half-clamp. After plugging in, the "mortise and tenon" principle is used to hold each other tightly and lock against retreat, thereby increasing the force-bearing area of ​​the plug-in structure, evenly bearing the force, having a stronger load-bearing capacity and a more stable structure.

[0005] The technical solution adopted by the present invention is as follows: a forged boltless string clamp, one end of which is used to cooperate with the suspension string and the other end is used to cooperate with the load-bearing cable or the contact wire, including two detachably connected half-clamps, each of which includes a hook and a claw. When the two half-clamps are connected, the two hooks cooperate to form a connecting ring that cooperates with the suspension string, and the two claws cooperate to form a clamping claw. The clamping claw has a first form that is compatible with the load-bearing cable and a second form that is compatible with the contact wire. The two half-clamps are symmetrically arranged when connected, and the two half-clamps include a plug-in block and a plug-in slot. The plug-in block is compatible with the plug-in slot. When the two half-clamps are connected, the plug-in block of one half-clamp is plug-matched with the plug-in slot of the other half-clamp.

[0006] The half-clamp includes a hooking body and a connecting body arranged from top to bottom, the hook is arranged at the upper end of the hooking body, the hooking body extends to the side with a first matching seat, the claw is arranged at the lower end of the connecting body, and the connecting body extends to the side with a second matching seat, the first matching seat and the second matching seat are arranged in a relatively vertical orientation, the plug-in groove is recessed on the lower end surface of the first matching seat, and the plug-in block is protruded on the upper end surface of the second matching seat, when the two half-clamps are connected, the second matching seat of one of the half-clamps slides below the first matching seat of the other half-clamp, and the plug-in block forms a plug-in fit with the plug-in groove.

[0007] The end surface of the hook body close to the second matching seat is the plug-in surface, the plug-in surface extends to the first matching seat, the plug-in groove passes through the plug-in surface, and the plug-in block extends to abut against the plug-in surface.

[0008] The plug-in block and the plug-in slot are arranged in a wedge shape relative to the plug-in surface.

[0009] An inclined angle is provided between the axis of the plug-in block and the axis of the second matching seat. The end of the plug-in block away from the plug-in surface extends obliquely toward the first matching seat. The angle of the inclined angle is between 1° and 10°.

[0010] The outer edge of the plug-in block is provided with a chamfer, and the two side edges of the plug-in block away from one end of the hooking body are also provided with guiding inclined surfaces.

[0011] The end surface of the hook close to one end of the first matching seat has a protruding limiting portion, and an anti-retraction inclined surface is connected between the limiting portion and the end surface of the hook. When the two half clamps are connected, the two anti-retraction inclined surfaces abut against each other.

[0012] The half clamp is made of a forging process and is made of a copper-nickel-silicon alloy.

[0013] One side of the hook of one of the half clamps is provided with an inclined equipotential wire crimping cavity seat, and the equipotential wire crimping cavity seat is provided with an equipotential wire threading hole, and an angle of 45° to 50° is provided between the axis of the equipotential wire threading hole and the horizontal plane.

[0014] The equipotential line crimping cavity seat includes a cavity seat body and a crimping block, the crimping block is detachably arranged at one end of the cavity seat body away from the plug-in block, the cavity seat body is provided with a groove for the crimping block to be embedded, both side end faces of the crimping block are extended with pin shafts, both side inner walls of the groove are provided with movable grooves for the pin shaft to extend into, the movable groove includes a first movable segment, a second movable segment and a third movable segment connected in sequence, the first movable segment and the third movable segment both extend toward the end face of the cavity seat body, the path of the second movable segment is C-shaped, one side of the movable groove is provided with a disassembly port passing through the end face of the cavity seat body, one side of the crimping block is provided with a crimping surface, the crimping surface forms the inner wall of the equipotential line threading hole, and the end edge of the crimping surface away from the end face of the cavity seat body is provided with an arc-shaped guide surface.

[0015] An adjustable three-dimensional suspension string comprises a contact line suspension string clamp, a load-bearing cable suspension string clamp and a suspension string located therebetween, wherein the contact line suspension string clamp and the load-bearing cable suspension string clamp are both the forged boltless suspension string clamps described above, and further comprise a single earring body, a tensioning block and an adjusting cone sleeve, wherein one end of the single earring body cooperates with the load-bearing cable suspension string clamp, and the other end is threadedly connected to the adjusting cone sleeve via a thread, the tensioning block is a split structure and is located between the single earring body and the adjusting cone sleeve, the suspension string passes through the single earring body, the tensioning block and the adjusting cone sleeve in sequence, and when the adjusting cone sleeve is threadedly connected to the single earring body, the tensioning block clamps the suspension string.

[0016] The beneficial effects of the present invention are as follows: the wire clamp of the present invention is formed by plugging together two half-clamps with the same structure and symmetrically arranged when connected. Both half-clamps have plug-in blocks and plug-in slots. When the two half-clamps are plugged in, the plug-in block and plug-in slot of one half-clamp are plug-in-matched with the plug-in slot and plug-in block corresponding to the other half-clamp. The two half-clamps are combined into one, and after being plugged in using the principle of "mortise and tenon", they hold each other tightly and are locked to prevent retreat, thereby increasing the force-bearing area of ​​the plug-in structure, evenly bearing the force, having a stronger load-bearing capacity, and a more stable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0018] Figure 1 It is a schematic structural diagram of the forged boltless string suspension clamp of the present invention;

[0019] Figure 2 It is an explosion schematic diagram of the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the half clamp in the present invention;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective;

[0022] Figure 5 It is a left side schematic diagram of the half clamp in the present invention;

[0023] Figure 6 It is a cross-sectional schematic diagram of a half clamp in the present invention;

[0024] Figure 7 It is a top view schematic diagram of the present invention;

[0025] Figure 8 It is a front view schematic diagram of the present invention;

[0026] Fig. 9 It is a left side schematic diagram of the contact line suspension string clamp in the present invention;

[0027] Fig.10 It is a left side schematic diagram of the load-bearing cable hanging string clamp in the present invention;

[0028] Fig.11 It is a cross-sectional schematic diagram of the present invention;

[0029] Fig.12 It is a partial enlarged schematic diagram of another embodiment of the present invention when the crimping block is in the first state;

[0030] Fig.13 It is a partial enlarged schematic diagram of another embodiment of the present invention when the crimping block is in the second state;

[0031] Fig.14 It is a partially enlarged schematic diagram of another embodiment of the present invention in which the crimping block is removed;

[0032] Fig.15 A schematic diagram of the structure of a crimping block in another embodiment of the present invention;

[0033] Fig.16 It is a schematic diagram of the structure of the adjustable body suspension string;

[0034] Fig.17 for Fig.16 A local enlarged schematic diagram of the middle A;

[0035] Fig.18 It is a partial enlarged schematic diagram of the adjustment cone sleeve being separated from the single earring body;

[0036] In the figure, 1-half clamp, 2-hook, 3-claw, 4-connecting ring, 5-clamping claw, 6-plug-in block, 7-plug-in slot, 8-hook holding body, 9-connecting body, 10-first matching seat, 11-second matching seat, 12-plug-in surface, 13-inclined angle, 14-chamfer, 15-limiting part, 16-anti-retraction inclined surface, 17-contact line, 18-load-bearing cable, 19-guide inclined surface, 20-equipotential line crimping cavity seat, 21-equipotential Position line threading hole, 22-bevel, 23-lower part of connecting ring, 24-cavity seat body, 25-crimping block, 26-groove, 27-pin shaft, 28-first movable section, 29-second movable section, 30-third movable section, 31-disassembly opening, 32-crimping surface, 33-arc-shaped guide surface, 34-contact line suspension string clamp, 35-load-bearing cable suspension string clamp, 36-suspension string, 37-single earring body, 38-tensioning block, 39-adjusting cone sleeve. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0039] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are for explaining and understanding the present invention, but not for limiting the scope of protection of the present invention.

[0040] like Figures 1 to 18 As shown, an embodiment of the present invention is a forged boltless string clamp, one end of which is used to cooperate with the suspension string 36 and the other end of which is used to cooperate with the load-bearing cable 18 or the contact line 17, including two detachably connected half-clamps 1, the two half-clamps 1 each include a hook 2 and a claw 3, when the two half-clamps 1 are connected, the two hooks 2 cooperate to form a connecting ring 4 that cooperates with the suspension string 36, and the two claws 3 cooperate to form a clamping claw 5, the clamping claw 5 has a first form that is compatible with the load-bearing cable 18 and a second form that is compatible with the contact line 17, the two half-clamps 1 are symmetrically arranged when connected, the two half-clamps 1 each include a plug-in block 6 and a plug-in slot 7, the plug-in block 6 is compatible with the plug-in slot 7, when the two half-clamps 1 are connected, the plug-in block 6 of one half-clamp 1 is plug-fitted with the plug-in slot 7 of the other half-clamp 1.

[0041] The beneficial effects of such a configuration are as follows: the wire clamp of the present invention is formed by plugging together two half-clamps of the same structure and symmetrically arranged when connected; both half-clamps have plug-in blocks and plug-in slots; when the two half-clamps are plugged in, the plug-in block and plug-in slot of one half-clamp are plugged in with the corresponding plug-in slot and plug-in block of the other half-clamp; the two half-clamps are combined into one and, after being plugged in using the principle of "mortise and tenon", they hold each other tightly and are locked to prevent retreat, thereby increasing the force-bearing area of ​​the plug-in structure, evenly distributing force, having a stronger load-bearing capacity, and a more stable structure.

[0042] It is further configured that the half-clamp 1 includes a hooking body 8 and a connecting body 9 arranged from top to bottom, the hook 2 is arranged at the upper end of the hooking body 8, the hooking body 8 extends to the side with a first mating seat 10, the claw 3 is arranged at the lower end of the connecting body 9, and the connecting body 9 extends to the side with a second mating seat 11, the first mating seat 10 and the second mating seat 11 are arranged in a relatively vertical orientation, the plug-in groove 7 is recessed on the lower end surface of the first mating seat 10, and the plug-in block 6 is convex on the upper end surface of the second mating seat 11, when the two half-clamps 1 are connected, the second mating seat 11 of one of the half-clamps 1 slides below the first mating seat 10 of the other half-clamp 1, and the plug-in block 6 forms a plug-in fit with the plug-in groove 7.

[0043] The beneficial effects of such a setting are as follows: the first mating seat and the second mating seat on the same half-clamp are relatively vertically arranged; when the two half-clamps are connected, the first mating seat and the second mating seat on different half-clamps can form a relatively upper and lower position; in the process of connecting and mating the two half-clamps, the second mating seat slides toward the position below the first mating seat; at the same time, the plug-in groove on the lower end face of the first mating seat and the plug-in block on the upper end face of the second mating seat form a plug-in fit; the two half-clamps can be plug-in fit in a face-to-face direction; the relative position of the first mating seat and the second mating seat makes the plug-in structure more evenly stressed; the structural design of the concave and convex platform greatly improves the load-bearing performance; the structure is sophisticated, and it is convenient for batch processing; the clamping effect on the load-bearing cable and the contact line is also better.

[0044] It is further configured that the end face of the hook body 8 close to the second matching seat 11 is a plug-in surface 12 , the plug-in surface 12 extends to the first matching seat 10 , the plug-in groove 7 passes through the plug-in surface 12 , and the plug-in block 6 extends to abut against the plug-in surface 12 .

[0045] The beneficial effects of such a configuration are as follows: the plug-in block can be inserted into the plug-in slot from the plug-in surface, which is convenient for assembly, and the plug-in block is longer and has a higher connection strength. If the two half-clamps are installed tightly, the two plug-in surfaces fit together to form an integrated locking state.

[0046] It is further provided that the plug-in block 6 and the plug-in slot 7 are provided in a wedge shape relative to the plug-in surface 12 .

[0047] The beneficial effects of such a setting are as follows: drawing on the principle of "mortise and tenon", the wedge-shaped structure of the plug-in block and the plug-in slot enables the two half clamps to form an interlocking structure, which has the effect of preventing from falling off and carrying current in one.

[0048] It is further provided that an inclined angle 13 is provided between the axis of the plug-in block 6 and the axis of the second mating seat 11, and the end of the plug-in block 6 away from the plug-in surface 12 extends obliquely toward the first mating seat 10, and the angle of the inclined angle 13 is between 1 and 10 degrees.

[0049] The beneficial effects of such a setting are as follows: it limits the inclination direction of the plug-in block and the plug-in slot, satisfies the wedge-shaped structure while facilitating plug-in. In this embodiment, the inclination angle is 3°, so that the plug-in process of the plug-in block and the plug-in slot can also be evenly stressed, and the plug-in is smoother. When plugged into the end position, it reaches the position where the clamping force is maximum.

[0050] It is further provided that the outer edge of the plug-in block 6 is provided with a chamfer 14 , and the two side edges of the plug-in block 6 away from the hooking body 8 are also provided with guiding inclined surfaces 19 .

[0051] The beneficial effects of such a configuration are as follows: the guiding bevel and the chamfer cooperate to guide the plug-in block to slide into the plug-in slot, which facilitates docking and makes sliding smoother.

[0052] It is further provided that the end surface of the hook 2 close to one end of the first matching seat 10 has a protruding limiting portion 15, and an anti-retraction inclined surface 16 is connected between the limiting portion 15 and the end surface of the hook 2. When the two half clamps 1 are connected, the two anti-retraction inclined surfaces 16 abut against each other.

[0053] The beneficial effects of such a configuration are as follows: the anti-retraction inclined surfaces of the two half clamps can form a relative restriction or lock, and cooperate with the thickened limiting portion to have an anti-retraction function to ensure that the insertion is stable.

[0054] It is further provided that the half clamp 1 is processed by forging and is made of copper-nickel-silicon alloy.

[0055] The beneficial effects of this arrangement are as follows: since the raw materials are not added to the molten state in the forging process, defects caused by the solidification of the molten metal will not occur. At the same time, due to deformation and recrystallization, the grains can be refined, and the original segregation, looseness, pores, slag inclusions, etc. in the metal can be compacted and welded, and its structure becomes tighter, thereby improving the plasticity and mechanical properties of the metal, making it less likely to have defects inside, and having high production efficiency and yield rate, without the need for nondestructive testing.

[0056] The main reasons for using copper-nickel-silicon alloys in railway components include their excellent electrical conductivity, wear resistance, mechanical strength and corrosion resistance.

[0057] The main components of copper-nickel-silicon alloy (such as CuNi2Si) include copper (Cu), nickel (Ni) and silicon (Si). Copper, as the matrix element, retains excellent electrical conductivity; the addition of nickel significantly improves the strength, hardness and corrosion resistance of the material; silicon enhances the wear resistance of the alloy and gives it excellent thermal stability and heat treatment characteristics. This alloy has high strength, high wear resistance, excellent electrical conductivity and excellent corrosion resistance, and is suitable for use in harsh environments.

[0058] Conductivity and wear resistance: The application of copper-nickel-silicon alloy in railway parts is mainly due to its excellent conductivity and wear resistance. For example, in the accessories of electrified railway contact network, this alloy can withstand high current environment while maintaining good conductivity and wear resistance.

[0059] Mechanical strength and corrosion resistance: The high strength and corrosion resistance of the alloy make it suitable for various harsh working environments. For example, in high-speed rail materials, copper-nickel-silicon alloy materials have wear resistance and high-temperature softening resistance, which can meet the high requirements of high-speed rail for materials.

[0060] Processability and heat treatment characteristics: Copper-nickel-silicon alloy has good processability and heat treatment characteristics, and is suitable for manufacturing parts with complex shapes. For example, in high-speed rail brake systems and exhaust systems, this alloy can be precisely manufactured through cold working, hot working and welding.

[0061] Specific application cases of copper-nickel-silicon alloy in railway parts:

[0062] High-speed rail materials: The copper-nickel-silicon alloy material developed by Chalco Luotong has been widely used in the domestic high-speed rail field, filling the gap in domestic copper-nickel-silicon alloy materials for high-speed rail. This material has wear resistance and high-temperature softening resistance, and can meet the high requirements of high-speed rail for materials.

[0063] Electrified railway contact network accessories: Copper-nickel-silicon alloy is widely used in electrified railway contact network accessories because it can maintain stable conductivity and wear resistance in high current environments.

[0064] In summary, copper-nickel-silicon alloy has become an ideal material for railway components due to its excellent conductivity, wear resistance, mechanical strength and corrosion resistance, as well as good processability and heat treatment properties. It is widely used in high-speed rail, electrified railway contact network accessories and other fields.

[0065] It is further provided that an inclined equipotential wire crimping cavity seat 20 is provided on one side of the hook 2 of one of the half clamps 1, an equipotential wire crimping cavity seat 20 is provided with an equipotential wire threading hole 21, and an oblique angle 22 of 45° to 55° is provided between the axis of the equipotential wire threading hole 21 and the horizontal plane.

[0066] The beneficial effects of such a setting are as follows: in the present embodiment, the bevel angle is 50°, and the suspension string at this angle can greatly reduce wire and strand breakage, and prevent the suspension string from breaking, and the equipotential wire crimping cavity seat is integrally formed with the half-clamp, which reduces the area occupied by the forging material, and the equipotential wire crimping cavity seat is designed on the main body and arranged at an angle, which solves the problem of over-bending of the suspension string and solves the simplification of parts and complete and unified functions.

[0067] It is further provided that the equipotential line crimping cavity seat 20 includes a cavity seat body 24 and a crimping block 25, the crimping block 25 is detachably arranged at one end of the cavity seat body 24 away from the plug-in block 6, the cavity seat body 24 is provided with a groove 26 for the crimping block 25 to be embedded, both side end faces of the crimping block 25 are extended with pin shafts 27, both side inner walls of the groove 26 are provided with movable grooves for the pin shaft 27 to extend into, the movable groove includes a first movable segment 28, a second movable segment 29 and a third movable segment 30 connected in sequence, the first movable segment 28 and the third movable segment 30 both extend toward the end face of the cavity seat body 24, the path of the second movable segment 29 is C-shaped, one side of the movable groove is provided with a disassembly port 31 passing through the end face of the cavity seat body 24, one side of the crimping block 25 is provided with a crimping surface 32, the crimping surface 32 forms the inner wall of the equipotential line threading hole 21, and the end edge of the crimping surface 32 away from the end face of the cavity seat body 24 is provided with an arc-shaped guide surface 33.

[0068] The beneficial effects of such a setting are as follows. This is another embodiment of the present invention. When the installation is completed, the crimping block is set at the third movable section of the movable groove through the rotation of the pin shaft. The crimping block can rotate relative to the cavity seat body. The second movable section is used to connect the first movable section and the third movable section, and the C-shaped structure prevents the pin shaft from easily sliding into the first movable section. The pin shaft can also extend from the disassembly port connected to the first movable section to disassemble the crimping block, which is convenient for disassembly and assembly and for maintenance and replacement of parts. The crimping block has a first state that is convenient for the insertion of the suspension string and a second state that clamps the suspension string through rotation. When the crimping block is in the first state, the crimping surface faces the outside of the equipotential wire threading hole. The crimping block is in the second state, which increases the opening size of the equipotential wire threading hole, thereby facilitating the insertion of the suspension string. When the crimping block is in the second state, the crimping surface faces the inside of the equipotential wire threading hole. Because the suspension string is crimped in the equipotential wire threading hole after hard bending, the crimping surface needs to withstand the rebound force of the suspension string. When the suspension string is inserted into the equipotential wire threading hole, it abuts against the crimping surface. The crimping block is further rotated under the force to further shrink the opening of the equipotential wire threading hole, forcing the suspension string to be clamped tighter to prevent the suspension string from loosening and falling off. The arc-shaped guide surface makes way for the crimping block when it rotates, and can also guide the suspension string to slide into the equipotential wire threading hole when the crimping block is in the first state.

[0069] An adjustable three-dimensional suspension string, including a contact line suspension string clamp 34, a load-bearing cable suspension string clamp 35 and a suspension string 36 located therebetween, wherein the contact line suspension string clamp 34 and the load-bearing cable suspension string clamp 35 are both the forged boltless suspension string clamps described above, and also include a single earring body 37, a tensioning block 38 and an adjusting cone sleeve 39, wherein one end of the single earring body 37 cooperates with the load-bearing cable suspension string clamp 35, and the other end is threadedly connected to the adjusting cone sleeve 39 through a thread, the tensioning block 38 is a split structure and is located between the single earring body 37 and the adjusting cone sleeve 39, the suspension string 36 passes through the single earring body 37, the tensioning block 38 and the adjusting cone sleeve 39 in sequence, and when the adjusting cone sleeve 39 is threadedly connected to the single earring body 37, the tensioning block 38 clamps the suspension string 36.

[0070] The beneficial effects of such a configuration are as follows: the tensioning block is a split structure and the outer wall has a certain slope; the inner wall of the adjusting cone sleeve is matched with the outer wall of the tensioning block; when the adjusting cone sleeve is loosened, the tensioning block will open outward, and the internal suspension string can be moved; conversely, when the adjusting cone sleeve is tightened, the tensioning block will clamp the suspension string to fix it; through the cooperation of the single earring body, the tensioning block and the adjusting cone sleeve, the effect of adjustable length of the suspension string is achieved; in addition, the structure is simple, the adjustment is convenient, and it can adapt to various working conditions; the adjustable body suspension string has the advantage of a wider range of applications.

[0071] In this embodiment, the lower part 23 of the connecting ring formed by the combination of two hooks is a semicircle with a diameter of 11 mm. The lower part of the connecting ring can be connected to the suspension string through either a single earring body or a chicken core ring. The inner diameter of the single earring body or the chicken core ring is generally 12 to 12.5 mm. After the lower part of the connecting ring is connected to the single earring body or the chicken core ring, the fit is more precise and the force-bearing area is larger. The hook and the single earring body or the chicken core ring can increase the wear resistance and fatigue resistance, reduce local pressure, increase the mutual wear resistance, and improve the service life of parts.

[0072] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A forged boltless suspension string clamp, one end of which is used to cooperate with the suspension string (36) and the other end of which is used to cooperate with the load-bearing wire (18) or the contact wire (17), characterized in that: The invention comprises two detachably connected half clamps (1), each of which comprises a hook (2) and a claw (3). When the two half clamps (1) are connected, the two hooks (2) cooperate to form a connecting ring (4) that cooperates with a suspension string (36), and the two claws (3) cooperate to form a clamping claw (5). The clamping claw (5) has a first form that is compatible with a load-bearing cable (18) and a second form that is compatible with a contact line (17). When the two half clamps (1) are connected, they are symmetrically arranged. Each of the two half clamps (1) comprises a plug-in block (6) and a plug-in slot (7). The plug-in block (6) is compatible with the plug-in slot (7). When the two half clamps (1) are connected, the plug-in block (6) of one half clamp (1) is plugged into and matched with the plug-in slot (7) of the other half clamp (1).

2. The forged boltless suspension string clamp according to claim 1, characterized in that: The half clamp (1) comprises a hooking body (8) and a connecting body (9) arranged from top to bottom, the hook (2) is arranged at the upper end of the hooking body (8), the hooking body (8) extends to the side with a first matching seat (10), the claw (3) is arranged at the lower end of the connecting body (9), the connecting body (9) extends to the side with a second matching seat (11), the first matching seat (10) and the second matching seat (11) are arranged in a relatively vertical orientation, the plug-in groove (7) is recessed on the lower end surface of the first matching seat (10), the plug-in block (6) is convexly arranged on the upper end surface of the second matching seat (11), when the two half clamps (1) are connected, the second matching seat (11) of one of the half clamps (1) slides below the first matching seat (10) of the other half clamp (1), and the plug-in block (6) forms a plug-in fit with the plug-in groove (7).

3. The forged boltless suspension string clamp according to claim 2, characterized in that: The end surface of the hook body (8) close to the second matching seat (11) is a plug-in surface (12), the plug-in surface (12) extends to the first matching seat (10), the plug-in groove (7) passes through the plug-in surface (12), and the plug-in block (6) extends to abut against the plug-in surface (12).

4. The forged boltless suspension string clamp according to claim 3, characterized in that: The plug-in block (6) and the plug-in slot (7) are arranged in a wedge shape relative to the plug-in surface (12).

5. The forged boltless suspension string clamp according to claim 4, characterized in that: An inclined angle (13) is provided between the axis of the plug-in block (6) and the axis of the second matching seat (11); one end of the plug-in block (6) away from the plug-in surface (12) extends obliquely toward the direction close to the first matching seat (10); and the angle of the inclined angle (13) is between 1° and 10°.

6. The forged boltless suspension string clamp according to claim 2, characterized in that: The outer edge of the plug-in block (6) is provided with a chamfer (14), and the two side edges of the plug-in block (6) away from the hooking body (8) are also provided with guiding inclined surfaces (19).

7. The forged boltless string clamp according to claim 2, characterized in that: The end surface of the hook (2) close to one end of the first matching seat (10) is protruded with a limiting portion (15), and an anti-retraction inclined surface (16) is connected between the limiting portion (15) and the end surface of the hook (2). When the two half clamps (1) are connected, the two anti-retraction inclined surfaces (16) abut against each other.

8. The forged boltless suspension string clamp according to claim 1, characterized in that: The half clamp (1) is processed by forging technology and is made of copper-nickel-silicon alloy.

9. The forged boltless suspension string clamp according to claim 1, characterized in that: One side of the hook (2) of one of the half clamps (1) is provided with an inclined equipotential line crimping cavity seat (20), and an equipotential line threading hole (21) is provided on the equipotential line crimping cavity seat (20), and an angle (22) of 45° to 55° is provided between the axis of the equipotential line threading hole (21) and the horizontal plane; the equipotential line crimping cavity seat (20) comprises a cavity seat body (24) and a crimping block (25), and the crimping block (25) is detachably arranged at one end of the cavity seat body (24) away from the plug-in block (6), and the cavity seat body (24) is provided with a groove (26) for the crimping block (25) to be embedded, and pins (27) are extended from both side end faces of the crimping block (25), and the groove The inner walls on both sides of (26) are provided with movable grooves for the pin shaft (27) to extend into, and the movable groove includes a first movable section (28), a second movable section (29) and a third movable section (30) connected in sequence, the first movable section (28) and the third movable section (30) both extend toward the end face of the cavity seat body (24), the path of the second movable section (29) is C-shaped, and the movable groove on one side is provided with a disassembly opening (31) passing through the end face of the cavity seat body (24), and a crimping surface (32) is provided on one side of the crimping block (25), and the crimping surface (32) forms the inner wall of the equipotential line threading hole (21), and an arc-shaped guiding surface (33) is provided on the edge of one end of the crimping surface (32) away from the end face of the cavity seat body (24).

10. An adjustable body suspension string, characterized in that: The invention comprises a contact line string clamp (34), a load-bearing cable string clamp (35) and a suspension string (36) located therebetween. The contact line string clamp (34) and the load-bearing cable string clamp (35) are both forged boltless string clamps as described in any one of claims 1 to 9, and also comprises a single earring body (37), a tensioning block (38) and an adjusting cone sleeve (39). One end of the single earring body (37) cooperates with the load-bearing cable string clamp (35), and the other end is threadedly connected to the adjusting cone sleeve (39) through a thread. The tensioning block (38) is a split structure and is located between the single earring body (37) and the adjusting cone sleeve (39). The suspension string (36) passes through the single earring body (37), the tensioning block (38) and the adjusting cone sleeve (39) in sequence. When the adjusting cone sleeve (39) is threadedly connected to the single earring body (37), the tensioning block (38) clamps the suspension string (36).

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