Auxiliary pincers for mounting catenary dropper

Abstract

The utility model discloses a catenary dropper installation auxiliary clamp which comprises a clamp body, a first clamping plate, a second clamping plate and a bolt fixing sleeve, the first clamping plate is fixed to the end, away from a handle, of one clamp mouth of the clamp body, and the second clamping plate is fixed to the end, away from the handle, of the other clamp mouth of the clamp body. The second clamping plate is provided with a dropper U-shaped wire clamp clamping groove, the bolt fixing sleeve is arranged between the two clamp mouths of the clamp body, the bolt fixing sleeve is in sliding connection with one clamp mouth of the clamp body, the bolt fixing sleeve slides along the clamp mouths, and the bolt fixing sleeve is used for being arranged on a bolt in a sleeving mode and locking rotation of the bolt. The whole auxiliary clamp for installation is small, exquisite and light, the positions of a dropper U-shaped wire clamp and a bolt can be fixed at a time, it is guaranteed that a cable enters a groove, meanwhile, the angle of a current-carrying ring can be synchronously adjusted, work efficiency is improved, the number of constructors and labor intensity are reduced, and troubles caused by repeated adjustment are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power construction. More specifically, the utility model relates to an auxiliary clamp for installing a catenary suspension wire. Background Technique

[0002] The catenary is a special form of transmission line that is erected above the railway line to supply power to electric locomotives. It consists of several parts, including the contact suspension, support device, positioning device, pillar, and foundation. The suspension wire is one of the important components of the contact suspension. The contact wire 12 is hung on the carrier cable 11 through the suspension wire. Adjusting the length of the suspension wire can ensure the structural height of the contact suspension and the working height of the contact wire 12 from the rail surface, increasing the suspension points of the contact wire 12 and improving the current collection quality of the pantograph of the electric locomotive.

[0003] As Figure 1 and 2 shown in the structural schematic diagram of the suspension wire, bent portions are formed at both ends of the suspension wire 2 corresponding to the contact wire 12 and at both ends corresponding to the carrier cable 11 to form current-carrying rings 21. The upper current-carrying ring 21 is connected to the carrier cable 11 through a suspension wire U-shaped clamp 22 and a carrier cable suspension wire clamp 13. The suspension wire U-shaped clamp 22 and the carrier cable suspension wire clamp 13 are fixedly connected through a bolt 3 passing through both of them and a nut 4. The carrier cable suspension wire clamp 13 is clamped on the carrier cable 11; the lower current-carrying ring 21 is connected to the contact wire 12 through a suspension wire U-shaped clamp 22 and a contact wire suspension wire clamp 14. The suspension wire U-shaped clamp 22 and the contact wire suspension wire clamp 14 are fixedly connected through a bolt 3 passing through both of them and a nut 4. The contact wire suspension wire clamp 14 is clamped on the contact wire 12. During installation, both the upper current-carrying ring 21 and the lower current-carrying ring 21 should be installed at an angle of 45° to the wire (the carrier cable 11 and the contact wire 12 are collectively referred to as the wire). The upper current-carrying ring 21 is opposite to the driving direction, and the lower current-carrying ring 21 is in the same direction as the driving direction. During the installation construction, the nut 4 on the bolt 3 should be in an unfastened state first, so that the notch of the contact wire suspension wire clamp 14 opens at a certain angle to smoothly fit into the notch on the contact wire 12, and the notch of the carrier cable suspension wire clamp 13 opens at a certain angle to smoothly fit into the notch on the carrier cable 11. After the contact wire suspension wire clamp 14 is clamped and fixed to the contact wire 12 and the carrier cable suspension wire clamp 13 is clamped and fixed on the carrier cable 11, the nut 4 is tightened.

[0004] In the current railway electrification construction, when installing the catenary suspension wire, a ladder is often used on the track, and personnel are located inside the ladder frame for installation. During installation, two people often need to cooperate. One end fixes the bolt, and the other end tightens the nut. Due to the small space inside the ladder frame and difficult operation, situations such as the wire not fitting into the groove, the bolt rotating with the tightening of the nut, the torque not meeting the standard, or the angle of the current-carrying ring being insufficient after the nut is tightened may occur during installation. Repeated adjustments are required to meet the standards, resulting in high operation difficulty and low efficiency. Moreover, the construction volume of installing the suspension wire on the railway line is large, and the labor cost also increases accordingly. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the utility model innovatively provides an auxiliary clamp for installing catenary suspension strings, which is overall small and light, can fix the positions of the U-shaped clamp and the bolt of the suspension string at one time, ensure that the wire can enter the groove while synchronously adjusting the angle of the current-carrying ring, improve work efficiency, reduce the number of construction workers and labor intensity, and avoid the trouble caused by repeated adjustment.

[0006] To achieve the above technical objectives, the utility model discloses an auxiliary clamp for installing catenary suspension strings, which includes a clamp body, a first clamping plate, a second clamping plate and a bolt fixing sleeve.

[0007] The first clamping plate is fixed to the end of one of the jaws of the clamp body away from the handle, the second clamping plate is fixed to the end of the other jaw of the clamp body away from the handle, and a groove for the U-shaped clamp of the suspension string is provided on the second clamping plate.

[0008] The bolt fixing sleeve is arranged between the two jaws of the clamp body, the bolt fixing sleeve is slidably connected with one of the jaws of the clamp body, the bolt fixing sleeve slides along the jaw, and the bolt fixing sleeve is used for sleeving on the bolt and locking the rotation of the bolt.

[0009] Further, the bolt fixing sleeve is slidably connected with the jaw through a connecting plate, the bolt fixing sleeve is vertically fixed to one end of the connecting plate, and the other end of the connecting plate is sleeved on the jaw.

[0010] Further, the jaw is in the shape of a plate, a strip-shaped hole is provided on the connecting plate, and the connecting plate is sleeved on the jaw through the strip-shaped hole.

[0011] Further, a groove for the wire is provided on the first clamping plate, and the groove for the wire is an arc-shaped groove.

[0012] Further, the two jaws of the clamp body are respectively a fixed jaw and a movable jaw, the two handles of the clamp body are respectively a fixed handle and a movable handle, the fixed jaw and the fixed handle are on the same side, the movable jaw and the movable handle are on the same side, the fixed jaw is fixedly connected with the fixed handle, the end of the movable jaw close to the fixed handle is rotatably connected with the fixed handle, and the movable jaw is rotatably connected with the movable handle;

[0013] The auxiliary clamp for installing catenary suspension strings further includes a jamming mechanism, which is respectively connected with the movable jaw, the fixed handle and the movable handle, and is used for keeping the movable handle and the movable jaw stationary after the movable jaw moves towards the fixed jaw until the two maintain a preset distance.

[0014] Further, the jamming mechanism includes a spring, a slider, a card and a paddle. One end of the spring is fixedly connected to the movable jaw, and the connection point of the spring and the movable jaw is between the connection point of the movable jaw and the fixed handle and the connection point of the movable jaw and the movable handle. The other end of the spring is fixedly connected to the slider. A chute matching the slider is arranged in the fixed handle. The chute is arranged along the length direction of the fixed handle. The slider is arranged in the chute. One end of the card is rotatably connected to the slider, and the other end of the card is rotatably connected to the movable handle. The middle of the paddle is rotatably connected to the movable handle. A card slot for jamming the card is arranged on the end face of the paddle close to the fixed handle. The connection point of the movable jaw and the movable handle, the connection point of the card and the movable handle, and the connection point of the paddle and the movable handle are arranged in sequence on the movable handle along the direction away from the movable jaw.

[0015] Further, the jamming mechanism further includes a limit block. The limit block is fixed inside the end of the fixed handle away from the fixed jaw, and the limit block closes the end of the chute.

[0016] Further, the limit block is threadedly connected to the fixed handle. The limit block is provided with an external thread, and a threaded hole matching the thread on the limit block is arranged in the fixed handle. The threaded hole is communicated with the chute, and the end of the limit block away from the chute extends outside the fixed handle.

[0017] Further, a rotary cam is fixed to the end of the limit block away from the chute.

[0018] Further, a protective sleeve is arranged on the handle.

[0019] The beneficial effects of the present utility model are as follows:

[0020] The auxiliary clamp for installing the catenary suspension in the present utility model is overall small and light, can fix the positions of the U-shaped wire clamp and the bolt of the suspension at one time, ensure that the wire enters the groove while synchronously adjusting the angle of the current-carrying ring, improve work efficiency, reduce the number of construction workers and labor intensity, and avoid the trouble caused by repeated adjustment. Description of the Drawings

[0021] Figure 1 is the front view of the suspension.

[0022] Figure 2 is the side view of the suspension.

[0023] Figure 3 is the structural schematic diagram of the auxiliary clamp for installing the catenary suspension in the embodiment of the present utility model in the use state.

[0024] Figure 4 It is a schematic structural diagram of the catenary suspension clamp for the embodiment of the present utility model in an idle state.

[0025] Figure 5 It is a schematic structural diagram of the jamming mechanism for the embodiment of the present utility model.

[0026] In the figure,

[0027] 11. Messenger wire; 12. Contact wire; 13. Messenger wire suspension clamp; 14. Contact wire suspension clamp; 2. Suspension wire; 21. Current-carrying loop; 22. Suspension U-bolt; 3. Bolt; 4. Nut; 5. Clamp body; 51. Fixed jaw; 52. Movable jaw; 53. Fixed handle; 531. Slide groove; 532. Threaded hole; 54. Movable handle; 6. First splint; 61. Wire groove; 7. Second splint; 71. Suspension U-bolt groove; 8. Bolt fixing sleeve; 81. Connecting plate; 82. Slotted hole; 9. Jamming mechanism; 91. Spring; 92. Slide block; 93. Card; 94. Pusher; 941. Card slot; 10. Limit block; 20. Rotating cam. Specific embodiments

[0028] The following combines the description drawings of the specification to make a detailed explanation and description of the catenary suspension clamp provided by the present utility model.

[0029] This embodiment specifically discloses a catenary suspension clamp, such as Figure 3 and 4As shown in the figure, it includes a pliers body 5, a first clamping plate 6, a second clamping plate 7 and a bolt fixing sleeve 8. The first clamping plate 6 is fixed to the end of one of the pliers jaws of the pliers body 5 away from the handle, and the second clamping plate 7 is fixed to the end of the other pliers jaw of the pliers body 5 away from the handle. A suspension string U-shaped clamp slot 71 is provided on the second clamping plate 7. The bolt fixing sleeve 8 is arranged between the two pliers jaws of the pliers body 5. The bolt fixing sleeve 8 is slidably connected to one of the pliers jaws of the pliers body 5. The bolt fixing sleeve 8 slides along the pliers jaw. The bolt fixing sleeve 8 is used to be sleeved on the bolt 3 and lock the rotation of the bolt 3. When in use, the suspension string U-shaped clamp slot 71 on the second clamping plate 7 is clamped on the suspension string U-shaped clamp 22. The first clamping plate 6 is on the side of the wire (the carrier cable 11 or the contact wire 12) away from the suspension string U-shaped clamp 22. Slide the bolt fixing sleeve 8 along the pliers jaw to make the bolt fixing sleeve 8 sleeved on the bolt 3. Apply force to the two handles so that the two pliers jaws drive the first clamping plate 6 and the second clamping plate 7 to move towards each other. The contact wire 12 and the contact wire suspension string clamp 14 or the carrier cable 11 and the carrier cable suspension string clamp 13 are clamped between the first clamping plate 6 and the second clamping plate 7. The notch of the corresponding contact wire suspension string clamp 14 is clamped into the notch on the contact wire 12, or the notch of the carrier cable suspension string clamp 13 is clamped into the notch on the carrier cable 11 to ensure that the wire enters the slot. A part of one side of the suspension string U-shaped clamp slot 71 of the second clamping plate 7 is inside the current-carrying ring 21, while fixing the position of the suspension string U-shaped clamp 22 and adjusting the angle of the current-carrying ring 21. Moreover, the bolt fixing sleeve 8 fixes the position of the bolt 3 and no longer rotates with the rotation of the nut 4, which facilitates the tightening of the nut 4. Only one person can install the suspension string, reducing the number of construction workers and labor intensity, and can be done in one step, avoiding the trouble caused by repeated adjustment and improving the operation efficiency.

[0030] The inner cavity of the bolt fixing sleeve 8 is a limiting cavity, and the shape of the inner cavity matches the shape of the nut of the bolt 3, which is used to prevent the bolt 3 from rotating around its own axis. The nut of the bolt 3 is usually hexagonal. Therefore, in this embodiment, the inner cavity of the bolt fixing sleeve 8 is set to be hexagonal that matches the shape of the nut, so that the bolt 3 no longer rotates after the bolt fixing sleeve 8 is sleeved on the nut of the bolt 3, and the bolt 3 remains stationary when tightening the nut 4, improving the work efficiency.

[0031] Optionally, as Figure 3 and 4 shown, the bolt fixing sleeve 8 is slidably connected to the pliers jaw through a connecting plate 81. The bolt fixing sleeve 8 is vertically fixed to one end of the connecting plate 81. The bolt fixing sleeve 8 is fixed on the plate surface of the connecting plate 81. The other end of the connecting plate 81 is sleeved on the pliers jaw, and the bolt fixing sleeve 8 is driven to move towards or away from the bolt 3 by the sliding of the connecting plate 81 along the pliers jaw.

[0032] Furthermore, the jaws are plate-shaped. A strip-shaped hole 82 is formed in the connecting plate 81. The connecting plate 81 is sleeved on the jaws through the strip-shaped hole 82. As Figure 3 shown, the length and width of the strip-shaped hole 82 are slightly larger than the corresponding dimensions of the plate-shaped jaws of its sleeved part, that is Figure 3 in the shown angle, the connecting plate 81 can move up and down and back and forth relative to the jaws by a certain distance, so as to slightly adjust the angle of the bolt fixing sleeve 8 to align the inner cavity of the bolt fixing sleeve 8 with the bolt 3, and it can ensure that the bolt 3 does not rotate when the nut 4 is rotated.

[0033] Optionally, as Figure 3 and 4 shown, a wire slot 61 is provided on the first clamping plate 6. The wire slot 61 is an arc-shaped slot, and the arc-shaped slot matches the shapes of the contact wire 12 and the carrier cable 11, which is convenient for clamping and positioning, so that the contact wire and the carrier cable can smoothly enter the slot openings of the corresponding wire clips, and the angles of the wire entering the slot and the current-carrying ring 21 are more accurate.

[0034] In some alternative embodiments, the two jaws of the pliers body 5 are respectively a fixed jaw 51 and a movable jaw 52, and the two handles of the pliers body 5 are respectively a fixed handle 53 and a movable handle 54. The fixed jaw 51 and the fixed handle 53 are on the same side, and the movable jaw 52 and the movable handle 54 are on the same side. The fixed jaw 51 is fixedly connected to the fixed handle 53. Preferably, the fixed jaw 51 and the fixed handle 53 are connected by a bolt and nut assembly. The end of the movable jaw 52 close to the fixed handle 53 is rotatably connected to the fixed handle 53, and the movable jaw 52 is rotatably connected to the movable handle 54. Preferably, the rotational connections are all realized through a rotating shaft.

[0035] In this embodiment, both the fixed jaw 51 and the movable jaw 52 are C-shaped. The first clamping plate 6 is fixed to the end of the movable jaw 52, and the second clamping plate 7 is fixed to the end of the fixed jaw 51. The connecting plate 81 is sleeved on the middle section of the fixed jaw 51. The connection point between the movable jaw 52 and the movable handle 54 is located in the middle of the C-shaped section close to the fixed handle 53. When in use, the hanger U-shaped wire clip slot 71 can be first clamped on the hanger U-shaped wire clip 22, keep the fixed jaw 51 and the fixed handle 53 still, and apply force to move the movable handle 54 in the direction close to the fixed handle 53 until the wire slot 61 moves to the position of the wire.

[0036] In some embodiments, as Figure 3-5As shown, the auxiliary clamp for installing the catenary suspension also includes a jamming mechanism 9. The jamming mechanism is respectively connected to the movable jaw 52, the fixed handle 53 and the movable handle 54, and is used to keep the movable handle 54 and the movable jaw stationary after the movable jaw moves towards the fixed jaw until the two maintain a preset distance (in this embodiment, it is when the first splint and the second splint clamp the wire and the U-shaped clamp 22 of the suspension). The jamming mechanism 9 includes a spring 91, a slider 92, a card 93 and a paddle 94. One end of the spring 91 is fixedly connected to the movable jaw 52. Preferably, a spring connection hole is provided on the movable jaw 52, and the connection point of the spring 91 and the movable jaw 52 is between the connection point of the movable jaw 52 and the fixed handle 53 and the connection point of the movable jaw 52 and the movable handle 54, that is, the spring connection hole is between the connection point of the movable jaw 52 and the fixed handle 53 and the connection point of the movable jaw 52 and the movable handle 54. The other end of the spring 91 is fixedly connected to the slider 92. Preferably, the spring 91 is connected to the end of the slider 92 close to the fixed jaw 51. A chute 531 matching the slider 92 is provided in the fixed handle 53. The chute 531 is arranged along the length direction of the fixed handle 53. The slider 92 is arranged in the chute 531 and slides along the chute 531. One end of the card 93 is rotatably connected to the slider 92. A through hole for the end of the card 93 to enter the inside of the fixed handle 53 is provided on the end face of the fixed handle 53 close to the movable handle 54. The through hole communicates with the chute 531. The card 93 is rotatably connected to the slider 92 through a rotating shaft. The other end of the card 93 is rotatably connected to the movable handle 54. The card 93 is rotatably connected to the movable handle 54 through a rotating shaft. The middle of the paddle 94 is rotatably connected to the movable handle 54. The paddle 94 is rotatably connected to the movable handle 54 through a rotating shaft. A card slot 941 for jamming the card 93 is provided on the end face of the paddle 94 close to the fixed handle 53. The connection point of the movable jaw 52 and the movable handle 54, the connection point of the card 93 and the movable handle 54, and the connection point of the paddle 94 and the movable handle 54 are arranged in sequence on the movable handle 54 in the direction away from the movable jaw 52.

[0037] Press the fixed handle 53 and the movable handle 54 towards each other. The card 93 pushes the slider 92 to slide in the direction away from the fixed jaw 51, and the spring 91 is stretched. After the U-shaped clamp slot 71 of the suspension U-shaped clamp is stuck on the U-shaped clamp 22 of the suspension and the wire is in the wire slot 61, the side of the card 93 close to the movable handle 54 is stuck into the card slot 941 of the paddle 94. At the same time, one end of the paddle 94 close to the movable jaw 52 is pressed down close to the movable handle 54, and the end of the paddle 94 away from the movable jaw 52 is tilted away from the movable handle 54. At this time, it can be ensured that the first splint 6, the second splint 7, the movable jaw 52 and the fixed jaw 51 remain in the clamped state, as Figure 3The state shown. To ensure the jamming effect of the card 93, a protrusion extending in the direction of the paddle 94 can be provided on the surface of the card 93 close to the movable handle 54. The nut 4 rotates on the bolt 3 to achieve tightening. After the nut 4 is tightened, the end of the paddle 94 away from the movable jaw 52 can be pressed in the direction close to the movable handle 54. The end of the paddle 94 close to the movable jaw 52 moves in the direction away from the movable handle 54, which can give a thrust to the card 93. At the same time, with the restoring elastic force of the spring 91, the slider 92 slides in the direction close to the fixed jaw, and the slider drives the card 93 to move. The card 93 disengages from the card slot 941, and the jamming of the card 93 can be released, so that the movable handle 54 and the fixed handle 53, the movable jaw 52 and the fixed jaw 51 move away from each other, as Figure 4 The state shown. Through the jamming mechanism 9, the pliers body 5 can be kept stationary after being clamped, and the staff can completely let go and tighten the nut 4, further reducing the number of construction workers.

[0038] Optionally, as Figure 4 and 5 shown, the jamming mechanism 9 further includes a limit block 10. The limit block 10 is fixed inside the end of the fixed handle 53 away from the fixed jaw 51. The limit block 10 closes the end of the chute 531, and can limit the maximum distance that the slider 92 moves along the chute 531 in the direction away from the fixed jaw 51.

[0039] Furthermore, the limit block 10 is threadedly connected to the fixed handle 53. The limit block 10 is columnar, the limit block 10 is provided with external threads, and the fixed handle 53 is provided with a threaded hole 532 matching the threads on the limit block 10. The threaded hole 532 communicates with the chute 531. The end of the limit block 10 away from the chute 531 extends outside the fixed handle 53. Through the threaded connection, it is convenient for the installation and disassembly of the limit block 10 and convenient for adjusting the position of the limit block 10, that is, adjusting the farthest distance that the slider 92 slides inside the fixed handle 53.

[0040] Optionally, a rotary cam 20 is fixed to the end of the limit block 10 away from the chute 531, which is convenient for rotating the limit block 10.

[0041] Optionally, a protective cover is provided on the handle. The protective cover is preferably a silica gel protective cover, which protects the hands of construction workers and plays an insulating role.

[0042] Taking the connection and installation of the dropper and the contact wire as an example to illustrate the usage method of the catenary dropper installation auxiliary pliers of the present application:

[0043] The U-shaped wire clamp slot 71 of the second clamp plate 7 is aligned with the U-shaped wire clamp 22 and placed on the contact wire wire clamp 14. The right side part outside the U-shaped wire clamp slot 71 of the second clamp plate 7 is in the lower current-carrying ring 21. At this time, the bolt fixing sleeve 8 can be slid along the fixed pliers mouth 51 so that the bolt fixing sleeve 8 is sleeved on the bolt 3, and force is applied to move the movable handle 54 in the direction close to the fixed handle 53, that is, the first clamp plate 6 moves toward the contact wire 12 until the contact wire 12 is in the wire clamp slot 61, and the notch of the contact wire 12 is inserted into the notch of the contact wire wire clamp 14. At this time, the card 93 is stuck in the slot 941 of the pick 94, the movable handle 54 and the movable pliers mouth 52 no longer move, and the auxiliary pliers can be completely clamped on the contact wire 12, the contact wire wire clamp 14 and the U-shaped wire clamp 22. Tighten the nut 4 on the screw rod of the bolt 3 on the other side. After tightening, press the pick 94 away from the end of the movable pliers mouth 52 to make the card 93 disengage from the card slot 941 and release the jam. Then, the auxiliary pliers can be removed to install the other end of the suspension string.

[0044] The suspension strings and load-bearing cables are connected and installed in the same way. The installation is simple and quick, can be performed by one person, and the installation accuracy is improved.

[0045] Through field tests, according to the traditional installation process, it takes an average of 2 people and 4 minutes to complete the installation of each suspension string. However, through the auxiliary pliers of the present application, it only takes 1 person and 2 minutes to complete the installation, which greatly improves the construction efficiency.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of this specification, the descriptions referring to terms such as "this embodiment", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any at least one embodiment or example. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0050] The above is only the preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An auxiliary clamp for installing catenary droppers, characterized in that, It includes a pliers body (5), a first clamping plate (6), a second clamping plate (7) and a bolt fixing sleeve (8). The first clamping plate (6) is fixed to the end of one of the jaws of the pliers body (5) away from the handle, the second clamping plate (7) is fixed to the end of the other jaw of the pliers body (5) away from the handle, and a catenary U-shaped clamp card slot (71) is formed on the second clamping plate (7). The bolt fixing sleeve (8) is arranged between the two jaws of the pliers body (5), the bolt fixing sleeve (8) is slidably connected to one of the jaws of the pliers body (5), the bolt fixing sleeve (8) slides along the jaw, and the bolt fixing sleeve (8) is used to be sleeved on the bolt (3) and lock the rotation of the bolt (3).

2. The catenary suspension clamp installation auxiliary pliers according to claim 1, characterized in that, The bolt fixing sleeve (8) is slidably connected to the jaw through a connecting plate (81), the bolt fixing sleeve (8) is vertically fixed to one end of the connecting plate (81), and the other end of the connecting plate (81) is sleeved on the jaw.

3. The auxiliary clamp for installing catenary suspension insulators according to claim 2, characterized in that The jaw is plate-shaped, a strip-shaped hole (82) is formed on the connecting plate (81), and the connecting plate (81) is sleeved on the jaw through the strip-shaped hole (82).

4. The auxiliary clamp for installing catenary suspension insulators according to claim 1, wherein A wire slot (61) is provided on the first clamping plate (6), and the wire slot (61) is an arc-shaped slot.

5. The auxiliary clamp for installing the catenary suspension wire according to any one of claims 1-4, characterized in that The two jaws of the pliers body (5) are respectively a fixed jaw (51) and a movable jaw (52), the two handles of the pliers body (5) are respectively a fixed handle (53) and a movable handle (54), the fixed jaw (51) and the fixed handle (53) are on the same side, the movable jaw (52) and the movable handle (54) are on the same side, the fixed jaw (51) is fixedly connected to the fixed handle (53), the end of the movable jaw (52) close to the fixed handle (53) is rotatably connected to the fixed handle (53), and the movable jaw (52) is rotatably connected to the movable handle (54); The catenary installation auxiliary pliers for the overhead contact line further includes a jamming mechanism (9), and the jamming mechanism (9) is respectively connected to the movable jaw (52), the fixed handle (53) and the movable handle (54), and is used to keep the movable handle (54) and the movable jaw stationary after the movable jaw moves towards the fixed jaw until the two maintain a preset distance.

6. The auxiliary clamp for installing catenary dropper according to claim 5, wherein The jamming mechanism (9) includes a spring (91), a slider (92), a card (93) and a paddle (94). One end of the spring (91) is fixedly connected to the movable jaw (52). The connection point of the spring (91) and the movable jaw (52) is between the connection point of the movable jaw (52) and the fixed handle (53) and the connection point of the movable jaw (52) and the movable handle (54). The other end of the spring (91) is fixedly connected to the slider (92). A chute (531) matching the slider (92) is provided in the fixed handle (53). The chute (531) is arranged along the length direction of the fixed handle (53). The slider (92) is arranged in the chute (531). One end of the card (93) is rotatably connected to the slider (92), and the other end of the card (93) is rotatably connected to the movable handle (54). The middle of the paddle (94) is rotatably connected to the movable handle (54). A card slot (941) for jamming the card (93) is provided on the end face of the paddle (94) close to the fixed handle (53). The connection point of the movable jaw (52) and the movable handle (54), the connection point of the card (93) and the movable handle (54), and the connection point of the paddle (94) and the movable handle (54) are arranged in sequence on the movable handle (54) in the direction away from the movable jaw (52).

7. The auxiliary clamp for installing the catenary suspension string according to claim 6, wherein, The jamming mechanism (9) further includes a limit block (10). The limit block (10) is fixed inside the end of the fixed handle (53) away from the fixed jaw (51), and the limit block (10) closes the end of the chute (531).

8. The auxiliary clamp for installing the catenary suspension clamp according to claim 7, wherein, The limit block (10) is threadedly connected to the fixed handle (53). The limit block (10) has an external thread. A threaded hole (532) matching the thread on the limit block (10) is provided in the fixed handle (53). The threaded hole (532) communicates with the chute (531). The end of the limit block (10) away from the chute (531) extends outside the fixed handle (53).

9. The auxiliary clamp for installing catenary suspension insulators according to claim 8, wherein, A rotary cam (20) is fixed to the end of the limit block (10) away from the chute (531).

10. The auxiliary clamp for installing the catenary suspension clamp according to claim 1, wherein, A protective cover is provided on the handle.

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