System and method for adjusting length of groove-shaped connecting fitting

Abstract

According to the system, an upper connecting table and a lower connecting table are oppositely distributed up and down, and a rod body of a lead screw bolt sequentially penetrates through an upper through hole of the upper connecting table and a lower trapezoidal threaded hole of the lower connecting table and then is connected with a protective nut; the first double-T-shaped connecting plate is connected with the upper connecting table and the lower connecting table through the first connecting plate and the third connecting plate, and the second double-T-shaped connecting plate is connected with the upper connecting table and the lower connecting table through the second connecting plate and the fourth connecting plate. The left end of the self-backup protection adjusting plate is connected with a double-T-shaped connecting plate II, and a connecting hole II and an arc-shaped channel are formed in the double-T-shaped connecting plate II; third connecting holes and kidney-shaped holes are formed in the groove-shaped connecting fitting, a connecting bolt B is connected into one second connecting hole and the pair of third connecting holes, and a connecting bolt C is connected into the arc-shaped groove channel and the pair of kidney-shaped holes; the left end of the groove-shaped strain clamp is connected with the right end of the groove-shaped connecting fitting. According to the method, the whole length is changed by rotating the lead screw bolt and adjusting the connecting position of the connecting bolt B in a matched mode. According to the system and the method, the overall length of the hardware fitting can be quickly and safely adjusted.

Description

Technical Field

[0001] The invention belongs to the technical field of overhead power line hardware, and in particular relates to a system and method for adjusting the length of a slot-type connection hardware. Background Art

[0002] Ensuring the safety of aerial work, improving work efficiency, and reducing the intensity of aerial work are the goals and directions that the power industry has been working hard to achieve. The length adjustment of the connecting fittings of overhead power lines is a large-scale aerial work project that requires the cooperation of multiple people to complete. The process is relatively cumbersome. First, the aerial workers need to walk on the wire to the appropriate position to arrange the backup protection measures. Secondly, the aerial workers need to walk on the wire again to the appropriate position to arrange the tension recovery tool. The tension recovery tool should be arranged in front of the backup protection measures. Thirdly, the tension recovery tool arrangement personnel need to stand by on the wire and cooperate with the tower side workers to retract the tension recovery tool, remove the connecting bolts between the ordinary adjustment plate and the tension clamp, and move up and down to complete the adjustment of the fitting length. Finally, after removing the backup protection measures and the tension recovery tool, the operator goes down the tower to complete the adjustment work. This type of work has high safety risks and high labor intensity. It requires aerial workers to repeatedly arrange backup protection measures and retract the wire tension for adjustment. Moreover, due to the limitation of the adjustment range of the adjustment plate, the adjustment length is limited each time, which makes the entire adjustment process slow.

[0003] In order to effectively solve the above-mentioned safety and technical problems, and at the same time, to increase the adjustment range and improve the adjustment efficiency, it is urgently necessary to provide a new type of connection fitting length adjustment system to continuously improve the "no power outage" guarantee capability and "fast power delivery" service quality. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a slot-type connection fitting length adjustment system and method, which has a simple structure, low manufacturing cost, high reliability, and good safety factor. It can quickly and safely adjust the overall length of the fitting, which is conducive to ensuring the safe operation of overhead power lines and the normal production and living electricity consumption of the majority of residents. The method has simple steps and a safe and convenient operation process. It can realize the rapid adjustment process of the fitting length. At the same time, it can effectively reduce the probability of falling during high-altitude operations, and can effectively ensure the safety of personnel and equipment while improving work efficiency.

[0005] In order to achieve the above-mentioned object, the present invention provides a slot-type connection fitting length adjustment system, including a spiral length adjustment fitting, a self-contained backup protection adjustment plate, a connection bolt A, a slot-type connection fitting, a connection bolt B, a connection bolt C, a slot-type tension clamp and a connection stud E;

[0006] The spiral length adjustment hardware includes an upper connecting platform, a lower connecting platform, a lead screw bolt, a positioning platform, a protective nut, a protective pin, a ratchet disc brake device, a double T-shaped connecting plate 1, a double T-shaped connecting plate 2, a connecting plate 1, a connecting plate 2, a connecting plate 3, a connecting plate 4, a connecting bolt 1, a connecting bolt 5, a connecting bolt 2, a connecting bolt 6, a connecting bolt 3, a connecting bolt 7, a connecting bolt 4 and a connecting bolt 8;

[0007] The upper connecting platform and the lower connecting platform are relatively distributed up and down; an upper through hole penetrating in the thickness direction is opened at the center of the upper connecting platform, and a rotating platform mounting groove is coaxially opened on the outer periphery of the upper end of the upper through hole; a pair of connecting ear plates 1 are fixedly connected to the left end of the upper connecting platform, and a pair of connecting holes A are relatively opened on the pair of connecting ear plates 1; a pair of connecting ear plates 2 are fixedly connected to the right end of the upper connecting platform, and a pair of connecting holes B are relatively opened on the pair of connecting ear plates 2; a lower trapezoidal threaded hole penetrating in the thickness direction is opened at the center of the lower connecting platform, a pair of connecting ear plates 3 are fixedly connected to the left end of the lower connecting platform, and a pair of connecting holes C are relatively opened on the pair of connecting ear plates 3; a pair of connecting ear plates 4 are fixedly connected to the right end of the lower connecting platform, and a pair of connecting holes D are relatively opened on the pair of connecting ear plates 4;

[0008] The rod body of the lead screw bolt is provided with a trapezoidal thread throughout the length direction, and a pin hole A is radially opened at the end, and a ratchet disc and a rotating table are coaxially fixedly mounted on the head end in sequence, wherein the ratchet disc is arranged close to the nut, and the size of the rotating table is adapted to the size of the rotating table mounting groove; the end of the rod body of the lead screw bolt first slides through the upper through hole of the upper connecting table, and then passes through the lower trapezoidal threaded hole of the lower connecting table through threaded matching, and the pin hole A is located below the lower connecting table, and the rotating table is rotatably embedded in the rotating table mounting groove;

[0009] A trapezoidal threaded hole matching the trapezoidal thread is provided at the center of the positioning platform. The positioning platform is arranged between the upper connecting platform and the lower connecting platform, and is fixedly sleeved on the rod body of the lead screw bolt through threaded matching, and the upper connecting platform is pressed tightly against the lower end of the rotating platform.

[0010] The protective nut is provided with a through pin hole B corresponding to the pin hole A, and the protective nut is fixedly sleeved on the end of the rod body of the lead screw bolt through threaded cooperation, and the through pin hole B is aligned with the pin hole A; the protective pin is inserted into the aligned through pin hole B and the pin hole A;

[0011] The ratchet disc brake device is located outside the mounting groove of the rotating platform and is fixedly connected to the upper end surface of the upper connecting platform. The ratchet teeth in the ratchet disc brake device are meshed with the ratchet disc to prevent the ratchet disc from rotating in the opposite direction.

[0012] The double T-type connecting plate 1 and the double T-type connecting plate 2 are relatively distributed on the left and right sides of the middle section of the lead screw bolt; the double T-type connecting plate 1 is T-shaped as a whole, and has a pair of longitudinal extension sections 1 and a pair of transverse extension sections 1 that are distributed at intervals, and a pair of connecting holes E and a pair of connecting holes F are respectively opened at the upper and lower ends of the pair of longitudinal extension sections 1, and a pair of connecting holes G are opened at the ends of the pair of transverse extension sections 1; the double T-type connecting plate 2 is T-shaped as a whole, and has a pair of longitudinal extension sections 2 and a pair of transverse extension sections 2 that are distributed at intervals, and a pair of connecting holes H and a pair of connecting holes I are respectively opened at the upper and lower ends of the pair of longitudinal extension sections 2, and a pair of connecting holes J are opened at the ends of the pair of transverse extension sections 2;

[0013] The connecting plate 1, connecting plate 2, connecting plate 3 and connecting plate 4 are all strip-shaped plates of the same size, and are provided with mounting holes at both ends;

[0014] The left and right ends of the connecting plate 1 are respectively inserted between the upper ends of the pair of longitudinal extension sections 1 and between the pair of connecting ear plates 1, and the mounting hole at the left end thereof is aligned with the pair of connecting holes E to form a connecting hole group 1, and the mounting hole at the right end thereof is aligned with the pair of connecting holes A to form a connecting hole group 2;

[0015] The left and right ends of the connecting plate 2 are respectively inserted between a pair of connecting ear plates 2 and between the upper ends of a pair of longitudinal extension sections 2, and the mounting hole at the left end thereof is aligned with a pair of connecting holes B to form a connecting hole group 3, and the mounting hole at the right end thereof is aligned with a pair of connecting holes H to form a connecting hole group 4;

[0016] The left and right ends of the connecting plate 3 are respectively inserted between the lower ends of the pair of longitudinal extension sections 1 and between the pair of connecting ear plates 3, and the mounting hole at the left end thereof is aligned with the pair of connecting holes F to form a connecting hole group 5, and the mounting hole at the right end thereof is aligned with the pair of connecting holes C to form a connecting hole group 6;

[0017] The left and right ends of the connecting plate 4 are respectively inserted between a pair of connecting ear plates 4 and between the lower ends of a pair of longitudinal extension sections 2, and the mounting hole at the left end thereof is aligned with a pair of connecting holes D to form a connecting hole group 7, and the mounting hole at the right end thereof is aligned with a pair of connecting holes I to form a connecting hole group 8;

[0018] The connecting bolt 1 passes through the connecting hole group 1 and is connected to the locking nut 1 through threaded cooperation, thereby connecting the left end of the connecting plate 1 to the double T-shaped connecting plate 1; the connecting bolt 5 passes through the connecting hole group 2 and is connected to the locking nut 5 through threaded cooperation, thereby connecting the right end of the connecting plate 1 to the upper connecting platform;

[0019] The second connecting bolt passes through the third connecting hole group and is connected to the second locking nut by threaded fit, thereby connecting the left end of the second connecting plate to the upper connecting platform; the sixth connecting bolt passes through the fourth connecting hole group and is connected to the sixth locking nut by threaded fit, thereby connecting the right end of the second connecting plate to the second double T-shaped connecting plate;

[0020] The connecting bolt 3 passes through the connecting hole group 5 and is connected to the locking nut 3 by threaded fit, so that the left end of the connecting plate 3 is connected to the double T-shaped connecting plate 1; the connecting bolt 7 passes through the connecting hole group 6 and is connected to the locking nut 7 by threaded fit, so that the right end of the connecting plate 3 is connected to the lower connecting platform;

[0021] The connecting bolt 4 passes through the connecting hole group 7 and is connected to the locking nut 4 by threaded fit, so that the left end of the connecting plate 4 is connected to the lower connecting platform; the connecting bolt 8 passes through the connecting hole group 8 and is connected to the locking nut 8 by threaded fit, so that the right end of the connecting plate 4 is connected to the double T-shaped connecting plate 2;

[0022] The self-contained backup protection adjustment plate is a special-shaped plate, the left end of which protrudes to the left to form a connecting ear plate 5, and a connecting hole 1 is opened on the connecting ear plate 5, and the right end thereof extends in an arc shape to form an arc-shaped plate body, and an arc-shaped groove is opened on the edge of the arc-shaped plate body, and a plurality of connecting holes 2 are opened at intervals on the inner side of the arc-shaped plate body, and the plurality of connecting holes 2 are distributed in an arc shape with the same arc as the arc of the arc-shaped groove; the connecting ear plate 5 of the self-contained backup protection adjustment plate is inserted between a pair of transverse extension sections 2, and the connecting hole 1 is aligned with a pair of connecting holes J to form a connecting hole group A;

[0023] The connecting bolt A passes through the connecting hole group A and is connected to the locking nut A through threaded cooperation, so as to connect the left end of the self-contained backup protection adjustment plate with the double T-shaped connecting plate 2;

[0024] The slot-type connection hardware is composed of a pair of strip plates and a connection block, the pair of strip plates are relatively distributed, the connection block is located in the right area between the pair of strip plates, and is respectively fixedly connected to the pair of strip plates; a pair of connection holes three, a pair of waist-shaped holes and a pair of connection holes four are respectively opened at the left end, the left part of the middle part and the right end of the pair of strip plates; the left part of the pair of strip plates in the slot-type connection hardware is sleeved on the outside of the arc-shaped plate, and the pair of connection holes three and one connection hole two are aligned to form a connection hole group B, and the pair of waist-shaped holes and the arc-shaped groove are aligned to form a connection hole group C;

[0025] The connecting bolt B passes through the connecting hole group B and is connected to the locking nut B through threaded cooperation. The connecting bolt C passes through the connecting hole group C and is connected to the locking nut C through threaded cooperation. The connecting bolt B and the connecting bolt C cooperate with each other to connect the grooved connecting fitting with the self-contained backup protection adjustment plate.

[0026] The groove-type tension clamp comprises a tension clamp body, a steel anchor, a drainage plate assembly and a drainage clamp; the tension clamp body is a hollow tubular structure, with an axial cavity at its axis and a conical contraction section at its right end; the steel anchor is composed of a pull ring and an anchor rod fixedly connected to the right end of the pull ring, the pull ring is a single-ear ring with a connecting hole five thereon, the anchor rod is fixedly inserted in the tension clamp body, and the pull ring is exposed to the outside of the left end of the tension clamp body; the drainage plate assembly is arranged on one side of the outside of the tension clamp body, and its front end is fixedly connected to the tension clamp body; the drainage clamp is parallel to the drainage plate assembly, and its front end is fixedly connected to the end of the drainage plate assembly by a plurality of connecting bolts D; the pull ring is inserted between the right ends of a pair of strip plates, and the connecting hole five is aligned with a pair of connecting holes four to form a connecting hole group D;

[0027] The connecting stud E passes through the connecting hole group D and is connected with the locking nut E through threaded cooperation, so as to connect the slot-type tension clamp and the slot-type connecting hardware together.

[0028] Furthermore, in order to facilitate assembly and separation operations, an internal thread structure is provided in the left section of the inner cavity of the tension clamp body, and an external thread structure is provided on the outer side of the left part of the anchor rod. The anchor rod is fixedly inserted into the tension clamp body through the threaded cooperation between the external thread structure and the internal thread structure.

[0029] As a preferred embodiment, the double T-shaped connecting plate 1 and the double T-shaped connecting plate 2 have the same structure and shape, and are both composed of two T-shaped connecting plates and a strip block. The two T-shaped connecting plates are relatively distributed up and down, and the strip block is located between the two T-shaped connecting plates and is fixedly connected to the two T-shaped connecting plates respectively.

[0030] As a preference, the number of the second connecting holes is five.

[0031] In the present invention, an upper through hole is provided at the center of the upper connecting platform, and a lower trapezoidal threaded hole is provided at the center of the lower connecting platform, and then the screw bolt is passed through the upper through hole and the lower trapezoidal threaded hole in sequence, so that when the screw bolt rotates, the lower connecting platform can be driven to move toward or away from the upper connecting platform through threaded cooperation; a rotating platform installation groove is provided at the center of the upper end of the upper connecting platform, and then a rotating platform is fixedly connected to the head end of the rod body of the screw bolt, so that the rotating platform on the screw bolt can be embedded in the inside of the rotating platform installation groove during the installation process, which not only effectively improves the fit of the connection part, but also facilitates the smoother adjustment of the rotation process of the screw bolt. A ratchet disc is fixedly sleeved at the head end of the rod body of the screw bolt, and a ratchet disc brake device is installed on the part other than the upper connecting platform rotation installation groove, and the ratchet disc brake device can be used to limit the rotation direction of the screw bolt, which is conducive to realizing the follow-up self-locking function of the screw bolt. At the same time, since the rod body of the screw bolt adopts a trapezoidal thread and the inner hole of the lower connecting platform is a lower trapezoidal threaded hole, the rod body of the screw bolt and the lower connecting platform can use the trapezoidal thread to achieve a self-locking function. Furthermore, a trapezoidal threaded hole is provided at the center of the positioning platform, and the positioning platform is fitted on the rod body of the screw bolt through threaded matching, and the upper positioning platform is pressed against the lower end of the right rotation, so that the positioning platform realizes the self-locking function of the screw bolt. In this way, the triple self-locking function of the screw bolt in the spiral length adjustment hardware is realized, which effectively avoids the malfunction of the screw bolt and ensures the reliability and stability of the spiral length adjustment hardware. The double T-shaped connecting plate 1 and the double T-shaped connecting plate 2 are relatively distributed on the left and right sides of the middle section of the screw bolt, and then the double T-shaped connecting plate 1 is connected to the upper connecting platform and the lower connecting platform through the connecting plate 1 and the connecting plate 3 respectively, and the double T-shaped connecting plate 2 is connected to the upper connecting platform and the lower connecting platform through the connecting plate 2 and the connecting plate 4 respectively. The four connecting plates can be moved to establish the connection between the two double T-shaped connecting plates on both sides and the upper connecting platform and the lower connecting platform. In this way, a frame with adjustable shape is formed. At the same time, it is ensured that the connection strength between the two double T-shaped connecting plates will not change during the adjustment of the frame, effectively ensuring the reliability and stability of the connection. An arc-shaped groove is provided at the edge of the arc-shaped plate of the built-in backup protection adjustment plate. At the same time, a plurality of connecting holes 2 are provided on the inner side of the arc-shaped groove, and the distribution curvature of the plurality of connecting holes 2 is made consistent with the curvature of the arc-shaped groove. In this way, it is convenient to separately set connecting bolts in the connecting holes 2 and the arc-shaped groove, thereby not only effectively ensuring the connection strength, but also effectively maintaining the connection state by using the remaining connecting bolt after one connecting bolt is removed, thereby ensuring that the load-bearing state will not change during the adjustment process.The left end and the left middle part of a pair of strip plates in the slot-type connection fitting are respectively provided with a pair of connection holes 1 and a pair of waist-shaped holes, so that the first connection path between the slot-type connection fitting and the self-contained backup protection adjustment plate can be established by using the connection bolts B penetrating through the pair of connection holes 1 and the connection hole 2, and the second connection path between the slot-type connection fitting and the self-contained backup protection adjustment plate can be established by using the connection bolts C penetrating through the pair of waist-shaped holes and the arc-shaped groove. In this way, when the first connection path fails due to the need to adjust the overall length, the second connection path can be used to achieve the backup protection function, which effectively reduces the process of arranging backup protection measures for high-altitude operations, improves the work efficiency, and also improves the safety factor, avoiding the occurrence of falling. The pull ring of the slot-type tension clamp is connected to the right end of a pair of strip plates of the slot-type connection fitting through the connecting stud E, which is conducive to the quick and reliable connection of the slot-type connection fitting length adjustment system with the conductor. The device has a simple structure, low manufacturing cost, high reliability and good safety factor. It can quickly and safely adjust the overall length of the hardware, which is beneficial to ensure the safe operation of overhead power lines and the normal production and living electricity use of the majority of residents.

[0032] The present invention also provides a method for adjusting the length of a slot-type connection fitting, which adopts a slot-type connection fitting length adjustment system, wherein a double T-shaped connecting plate at one end of the slot-type connection fitting length adjustment system is connected to the tower side through a connecting screw F passing through a pair of connecting holes G, and a tension clamp at the other end of the slot-type connection fitting length adjustment system is connected to the conductor side through a tapered contraction section, comprising the following steps:

[0033] Step 1: The aerial workers climb the tower to the position of the spiral length adjustment fitting, first use a wrench to rotate the positioning table to the middle of the lead screw bolt, and then use a wrench to rotate the lead screw bolt on the spiral length adjustment fitting. Through the matching of the trapezoidal thread and the thread of the lower trapezoidal thread hole, the rotating lead screw bolt drives the lower connection table to move closer to or away from the upper connection table, so as to extend or shorten the overall length of the slotted connection fitting length adjustment system. When the adjustment reaches the limit state, execute step 2;

[0034] Step 2: First, the aerial workers install a tension recovery tool on the conductor and use the tension recovery tool to recover the conductor tension. Then, use a wrench to remove the connecting bolt B from the connecting group B. During this process, the connecting bolt C inserted in the arc groove is used to maintain the connection between the slot-type connecting fitting and the built-in backup protection adjustment plate, and ensure that there is a sliding adjustment space between the two. Then, the slot-type connecting fitting is moved to further extend or shorten the length of the slot-type connecting fitting length adjustment system as a whole. After reaching the set length, a pair of connecting holes three and an adjusted connecting hole two are aligned to form a new connecting hole group B. Then, the connecting bolt B passes through the new connecting hole group B and is connected to the locking nut B through a threaded fit, and the slot-type connecting fitting is connected to the built-in backup protection adjustment plate together with the connecting bolt C;

[0035] Step 3: Use a wrench to rotate the positioning table to a position that fits the upper connecting table, and further rotate the positioning table so that it presses the upper connecting table against the lower end of the rotating table.

[0036] As a preferred embodiment, in step one, when the lead screw bolt needs to rotate in the reverse direction, the ratchet disc brake device is first controlled to release the reverse braking restriction on the ratchet disc, and then the lead screw bolt is rotated in the reverse direction.

[0037] The method has simple steps and a safe and convenient operation process, and realizes a rapid adjustment process of the length of the hardware. At the same time, it effectively reduces the probability of falling during high-altitude operations, improves operating efficiency, and effectively ensures personal and equipment safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a front view of the present invention;

[0039] Figure 2 is a top view of the present invention;

[0040] Figure 3 It is a schematic diagram of the structure of the spiral length adjustment fitting in the present invention;

[0041] Figure 4 It is a structural schematic diagram of the upper connecting platform in the present invention;

[0042] Figure 5 It is a structural schematic diagram of the lower connecting platform in the present invention;

[0043] Figure 6 It is a structural schematic diagram of the screw bolt in the present invention;

[0044] Figure 7 It is a front view of the double T-shaped connecting plate 1 in the present invention;

[0045] Figure 8 It is a front view of the second double T-shaped connecting plate in the present invention;

[0046] Fig. 9 It is a top view of one or two double T-shaped connecting plates in the present invention;

[0047] Fig.10 It is a schematic diagram of the structure of connecting plates one, two, three or four in the present invention;

[0048] Fig.11 It is a structural schematic diagram of the self-contained backup protection adjustment plate in the present invention;

[0049] Fig.12 It is a front view of the groove-type connection fitting in the present invention;

[0050] Fig.13 is a top view of the slot-type connection fitting of the present invention;

[0051] Fig.14 It is a schematic diagram of the structure of the tension clamp in the present invention;

[0052] Fig.15 It is a structural schematic diagram of the steel anchor in the present invention.

[0053] In the figure: 1. Screw-type length adjustment hardware, 2. Self-contained backup protection adjustment plate, 3. Slot-type connection hardware, 4. Tension clamp, 5. Screw bolt, 6. Ratchet disk, 7. Turntable, 8. Positioning table, 9. Trapezoidal thread, 10. Protective nut, 11. Protective pin, 12. Upper connecting table, 13. Ratchet disk brake device, 14. Turntable mounting slot, 15. Connection hole A, 16. Connection hole B, 17. Lower connecting table, 18. Mounting hole, 19. Connection hole C, 20. Connection hole D, 21, double T-type connecting plate 1, 22, connection hole E, 23, connection hole F, 24, connection hole G, 25, double T-type connecting plate 2, 26, connection hole H, 27, connection hole I, 28, connection hole J, 29, connecting plate 1, 30, connecting plate 2, 31, connecting plate 3, 32, connecting plate 4, 33, upper through hole, 34, connecting ear plate 1, 35, connecting ear plate 2, 36, lower trapezoidal threaded hole, 37, connecting ear plate 3, 38, connecting ear plate 4, 39, pin hole A, 40, Longitudinal extension section 1, 41, transverse extension section 1, 42, longitudinal extension section 2, 43, transverse extension section 2, 44, connecting bolt 1, 45, connecting bolt 2, 46, connecting bolt 3, 47, connecting bolt 4, 48, connecting bolt 5, 49, connecting bolt 6, 50, connecting bolt 7, 51, connecting bolt 8, 52, connecting hole 1, 53, connecting hole 2, 54, arc groove, 55, connecting ear plate 5, 56, arc plate body, 57, connecting bolt A, 58, strip shaped plate, 59, connecting block, 60, connecting hole three, 61, connecting hole four, 62, waist-shaped hole, 63, connecting bolt B, 64, connecting bolt C, 65, tension clamp body, 66, steel anchor, 67, drainage assembly, 68, drainage clamp, 69, pull ring, 70, anchor rod, 71, connecting hole five, 72, conical contraction section, 73, axial cavity, 74, connecting bolt D, 75, connecting bolt E, 76, T-shaped connecting plate, 77, strip block, 78, connecting bolt F. DETAILED DESCRIPTION

[0054] The present invention will be further described below in conjunction with the accompanying drawings.

[0055] like Figures 1 to 15 As shown, the present invention provides a slot-type connection fitting length adjustment system, including a spiral length adjustment fitting 1, a self-contained backup protection adjustment plate 2, a connecting bolt A57, a slot-type connection fitting 3, a connecting bolt B63, a connecting bolt C64, a slot-type tension clamp 4 and a connecting stud E75;

[0056] The spiral length adjustment hardware 1 includes an upper connecting platform 12, a lower connecting platform 17, a lead screw bolt 5, a positioning platform 8, a protective nut 10, a protective pin 11, a ratchet disc brake device 13, a double T-shaped connecting plate 1 21, a double T-shaped connecting plate 2 25, a connecting plate 1 29, a connecting plate 2 30, a connecting plate 3 31, a connecting plate 4 32, a connecting bolt 1 44, a connecting bolt 5 48, a connecting bolt 2 45, a connecting bolt 6 49, a connecting bolt 3 46, a connecting bolt 7 50, a connecting bolt 4 47 and a connecting bolt 8 51;

[0057] The upper connecting platform 12 and the lower connecting platform 17 are relatively distributed up and down; an upper through hole 33 is opened in the center of the upper connecting platform 12 and runs through the thickness direction, and a rotating platform mounting groove 14 is coaxially opened on the outer periphery of the upper end of the upper through hole 33; a pair of connecting ear plates 1 34 are fixedly connected to the left end of the upper connecting platform 12, and a pair of connecting holes A15 are relatively opened on the pair of connecting ear plates 1 34; a pair of connecting ear plates 2 35 are fixedly connected to the right end of the upper connecting platform 12, and a pair of connecting holes B16 are relatively opened on the pair of connecting ear plates 2 35; a lower trapezoidal threaded hole 36 is opened in the center of the lower connecting platform 17 and runs through the thickness direction; a pair of connecting ear plates 3 37 are fixedly connected to the left end of the lower connecting platform 17, and a pair of connecting holes C19 are relatively opened on the pair of connecting ear plates 37; a pair of connecting ear plates 4 38 are fixedly connected to the right end of the lower connecting platform 17, and a pair of connecting holes D20 are relatively opened on the pair of connecting ear plates 4 38;

[0058] The rod body of the lead screw bolt 5 is provided with a trapezoidal thread 9 throughout the length direction, and a pin hole A39 is radially opened at the end, and a ratchet plate 6 and a rotating table 7 are coaxially fixedly mounted on the head end in sequence, wherein the ratchet plate 6 is arranged close to the nut, and the size of the rotating table 7 is adapted to the size of the rotating table mounting groove 14; the end of the rod body of the lead screw bolt 5 first slides through the upper through hole 33 of the upper connecting table 12, and then passes through the lower trapezoidal threaded hole 36 of the lower connecting table 17 through threaded matching, and the pin hole A39 is located below the lower connecting table 17, and the rotating table 7 is rotatably embedded in the rotating table mounting groove 14;

[0059] The center of the positioning platform 8 is provided with a trapezoidal thread hole adapted to the trapezoidal thread 9. The positioning platform 8 is arranged between the upper connecting platform 12 and the lower connecting platform 17, and is fixedly sleeved on the rod body of the lead screw bolt 5 through threaded matching, and the upper connecting platform 12 is pressed tightly against the lower end of the rotating platform 7.

[0060] The protective nut 10 is provided with a through pin hole B corresponding to the pin hole A39, and the protective nut 10 is fixedly sleeved on the end of the rod body of the lead screw bolt 5 through threaded matching, and the through pin hole B is aligned with the pin hole A39; the protective pin 11 is inserted into the aligned through pin hole B and the pin hole A39;

[0061] The ratchet disc brake device 13 is located outside the rotating platform mounting groove 14 and is fixedly connected to the upper end surface of the upper connecting platform 12. The ratchet teeth in the ratchet disc brake device 13 are meshed with the ratchet disc 6 to prevent the ratchet disc 6 from rotating in the opposite direction.

[0062] The double T-type connecting plate 1 21 and the double T-type connecting plate 2 25 are relatively distributed on the left and right sides of the middle section of the lead screw bolt 5; the double T-type connecting plate 1 21 is T-shaped as a whole, and has a pair of longitudinal extension sections 1 40 and a pair of transverse extension sections 1 41 that are distributed at intervals, and a pair of connecting holes E22 and a pair of connecting holes F23 are respectively opened at the upper and lower ends of the pair of longitudinal extension sections 1 40, and a pair of connecting holes G24 are opened at the ends of the pair of transverse extension sections 1 41; the double T-type connecting plate 2 25 is T-shaped as a whole, and has a pair of longitudinal extension sections 2 42 and a pair of transverse extension sections 2 43 that are distributed at intervals, and a pair of connecting holes H26 and a pair of connecting holes I27 are respectively opened at the upper and lower ends of the pair of longitudinal extension sections 2 42, and a pair of connecting holes J28 are opened at the ends of the pair of transverse extension sections 2 43;

[0063] The connecting plate 1 29, connecting plate 2 30, connecting plate 3 31 and connecting plate 4 32 are all strip-shaped plates of the same size, and are provided with mounting holes 18 at both ends;

[0064] The left and right ends of the connecting plate 1 29 are respectively inserted between the upper ends of a pair of longitudinal extension sections 1 40 and between a pair of connecting ear plates 1 34, and the mounting hole 18 at the left end thereof is aligned with a pair of connecting holes E22 to form a connecting hole group 1, and the mounting hole 18 at the right end thereof is aligned with a pair of connecting holes A15 to form a connecting hole group 2;

[0065] The left and right ends of the connecting plate 2 30 are respectively inserted between the pair of connecting ear plates 2 35 and the upper ends of the pair of longitudinal extension sections 2 42, and the mounting hole 18 at the left end thereof is aligned with the pair of connecting holes B16 to form a connecting hole group 3, and the mounting hole 18 at the right end thereof is aligned with the pair of connecting holes H26 to form a connecting hole group 4;

[0066] The left and right ends of the connecting plate 31 are respectively inserted between the lower ends of the pair of longitudinal extension sections 1 40 and the pair of connecting ear plates 3 37, and the mounting hole 18 at the left end is aligned with the pair of connecting holes F23 to form a connecting hole group 5, and the mounting hole 18 at the right end is aligned with the pair of connecting holes C19 to form a connecting hole group 6;

[0067] The left and right ends of the connecting plate 4 32 are respectively inserted between a pair of connecting ear plates 4 38 and between the lower ends of a pair of longitudinal extension sections 2 42, and the mounting hole 18 at the left end thereof is aligned with a pair of connecting holes D20 to form a connecting hole group 7, and the mounting hole 18 at the right end thereof is aligned with a pair of connecting holes I27 to form a connecting hole group 8;

[0068] The connecting bolt 1 44 passes through the connecting hole group 1 and is connected to the locking nut 1 through threaded cooperation, thereby connecting the left end of the connecting plate 1 29 to the double T-shaped connecting plate 1 21; the connecting bolt 5 48 passes through the connecting hole group 2 and is connected to the locking nut 5 through threaded cooperation, thereby connecting the right end of the connecting plate 1 29 to the upper connecting platform 12;

[0069] The second connecting bolt 45 passes through the third connecting hole group and is connected to the second locking nut by threaded fit, thereby connecting the left end of the second connecting plate 30 to the upper connecting platform 12; the sixth connecting bolt 49 passes through the fourth connecting hole group and is connected to the sixth locking nut by threaded fit, thereby connecting the right end of the second connecting plate 30 to the second double T-shaped connecting plate 25;

[0070] The connecting bolt 3 46 passes through the connecting hole group 5 and is connected to the locking nut 3 by threaded fit, thereby connecting the left end of the connecting plate 3 31 to the double T-shaped connecting plate 1 21; the connecting bolt 7 50 passes through the connecting hole group 6 and is connected to the locking nut 7 by threaded fit, thereby connecting the right end of the connecting plate 3 31 to the lower connecting platform 17;

[0071] The connecting bolt 47 passes through the connecting hole group 7 and is connected to the locking nut 4 by threaded fit, so as to connect the left end of the connecting plate 4 32 with the lower connecting platform 17; the connecting bolt 8 51 passes through the connecting hole group 8 and is connected to the locking nut 8 by threaded fit, so as to connect the right end of the connecting plate 4 32 with the double T-shaped connecting plate 25;

[0072] The self-contained backup protection adjustment plate 2 is a special-shaped plate, the left end of which protrudes to the left to form a connecting ear plate 55, and a connecting hole 1 52 is opened on the connecting ear plate 55, and the right end thereof extends in an arc shape to form an arc-shaped plate body 56, and an arc-shaped groove 54 is opened on the edge of the arc-shaped plate body 56, and a plurality of connecting holes 2 53 are opened at intervals on the inner side of the arc-shaped plate body 56, and the plurality of connecting holes 2 53 are distributed in an arc shape with the same arc as the arc groove 54; the connecting ear plate 55 of the self-contained backup protection adjustment plate 2 is inserted between a pair of transverse extension sections 2 43, and the connecting hole 1 52 is aligned with a pair of connecting holes J28 to form a connecting hole group A;

[0073] The connecting bolt A57 passes through the connecting hole group A and is connected to the locking nut A through threaded cooperation, so as to connect the left end of the self-contained backup protection adjustment plate 2 with the double T-shaped connecting plate 25;

[0074] The groove-type connection fitting 3 is composed of a pair of strip plates 58 and a connection block 59. The pair of strip plates 58 are relatively distributed, and the connection block 59 is located in the right area between the pair of strip plates 58 and is fixedly connected to the pair of strip plates 58 respectively; a pair of connection holes 3 60, a pair of waist-shaped holes 62 and a pair of connection holes 4 61 are relatively opened at the left end, the left part of the middle part and the right end of the pair of strip plates 58 respectively; the left part of the pair of strip plates 58 in the groove-type connection fitting 3 is sleeved on the outside of the arc-shaped plate 56, and the pair of connection holes 3 60 and the connection hole 2 53 are aligned to form a connection hole group B, and the pair of waist-shaped holes 62 and the arc-shaped groove 54 are aligned to form a connection hole group C;

[0075] The connecting bolt B63 passes through the connecting hole group B and is connected to the locking nut B through threaded cooperation. The connecting bolt C64 passes through the connecting hole group C and is connected to the locking nut C through threaded cooperation. The connecting bolt B63 and the connecting bolt C64 cooperate with each other to connect the grooved connecting fitting 3 with the self-contained backup protection adjustment plate 2.

[0076] The groove-type tension clamp 4 includes a tension clamp body 65, a steel anchor 66, a drainage plate assembly 67 and a drainage clamp 68; the tension clamp body 65 is a hollow tubular structure, with an axial cavity 73 at its axis and a conical contraction section 72 at its right end; the steel anchor 66 is composed of a pull ring 69 and an anchor rod 70 fixedly connected to the right end of the pull ring 69, the pull ring 69 is a single-ear ring with a connection hole 71, the anchor rod 70 is fixedly inserted in the tension clamp body 65, and the pull ring 6 9 is exposed outside the left end of the tension clamp body 65; the deflector assembly 67 is arranged on one side outside the tension clamp body 65, and its front end is fixedly connected to the tension clamp body 65; the deflector clamp 68 is parallel to the deflector assembly 67, and its front end is fixedly connected to the end of the deflector assembly 67 through a plurality of connecting bolts D74; the pull ring 69 is inserted between the right ends of a pair of strip plates 58, and the connecting hole five 71 is aligned with a pair of connecting holes four 61 to form a connecting hole group D;

[0077] The connecting stud E75 passes through the connecting hole group D and is connected with the locking nut E through threaded cooperation, so as to connect the slot-type tension clamp 4 and the slot-type connecting hardware 3 together.

[0078] In order to facilitate assembly and separation operations, the left section of the inner cavity of the tension clamp body 65 is provided with an internal thread structure, and the left outer side of the anchor rod 70 is provided with an external thread structure. The anchor rod 70 is fixedly inserted into the tension clamp body 65 through the threaded cooperation between the external thread structure and the internal thread structure.

[0079] As a preferred embodiment, the double T-shaped connecting plate 1 21 and the double T-shaped connecting plate 2 25 have the same structure and shape, and are both composed of two T-shaped connecting plates 76 and a strip block 77. The two T-shaped connecting plates 76 are relatively distributed up and down, and the strip block 77 is located between the two T-shaped connecting plates 76 and is fixedly connected to the two T-shaped connecting plates 76 respectively.

[0080] As a preference, the number of the second connecting holes 53 is five.

[0081] In the present invention, an upper through hole is provided at the center of the upper connecting platform, and a lower trapezoidal threaded hole is provided at the center of the lower connecting platform, and then the screw bolt is passed through the upper through hole and the lower trapezoidal threaded hole in sequence, so that when the screw bolt rotates, the lower connecting platform can be driven to move toward or away from the upper connecting platform through threaded cooperation; a rotating platform installation groove is provided at the center of the upper end of the upper connecting platform, and then a rotating platform is fixedly connected to the head end of the rod body of the screw bolt, so that the rotating platform on the screw bolt can be embedded in the inside of the rotating platform installation groove during the installation process, which not only effectively improves the fit of the connection part, but also facilitates the smoother adjustment of the rotation process of the screw bolt. A ratchet disc is fixedly sleeved at the head end of the rod body of the screw bolt, and a ratchet disc brake device is installed on the part other than the upper connecting platform rotation installation groove, and the ratchet disc brake device can be used to limit the rotation direction of the screw bolt, which is conducive to realizing the follow-up self-locking function of the screw bolt. At the same time, since the rod body of the screw bolt adopts a trapezoidal thread and the inner hole of the lower connecting platform is a lower trapezoidal threaded hole, the rod body of the screw bolt and the lower connecting platform can use the trapezoidal thread to achieve a self-locking function. . Furthermore, a trapezoidal threaded hole is provided at the center of the positioning platform, and the positioning platform is fitted on the rod body of the screw bolt through a threaded fit, and the upper positioning platform is pressed against the lower end of the right rotation, so that the positioning platform realizes the self-locking function of the screw bolt. In this way, the triple self-locking function of the screw bolt in the spiral length adjustment hardware is realized, which effectively avoids the malfunction of the screw bolt and ensures the reliability and stability of the spiral length adjustment hardware. The double T-shaped connecting plate 1 and the double T-shaped connecting plate 2 are relatively distributed on the left and right sides of the middle section of the screw bolt, and then the double T-shaped connecting plate 1 is connected to the upper connecting platform and the lower connecting platform through the connecting plate 1 and the connecting plate 3 respectively, and the double T-shaped connecting plate 2 is connected to the upper connecting platform and the lower connecting platform through the connecting plate 2 and the connecting plate 4 respectively. The four connecting plates can be moved to establish the connection between the two double T-shaped connecting plates on both sides and the upper connecting platform and the lower connecting platform. In this way, a frame with adjustable shape is formed. At the same time, it is ensured that the connection strength between the two double T-shaped connecting plates will not change during the adjustment of the frame, effectively ensuring the reliability and stability of the connection. An arc-shaped groove is provided at the edge of the arc-shaped plate of the built-in backup protection adjustment plate. At the same time, a plurality of connecting holes 2 are provided on the inner side of the arc-shaped groove, and the distribution curvature of the plurality of connecting holes 2 is made consistent with the curvature of the arc-shaped groove. In this way, it is convenient to separately set connecting bolts in the connecting holes 2 and the arc-shaped groove, thereby not only effectively ensuring the connection strength, but also effectively maintaining the connection state by using the remaining connecting bolt after one connecting bolt is removed, thereby ensuring that the load-bearing state will not change during the adjustment process.The left end and the left middle part of a pair of strip plates in the slot-type connection fitting are respectively provided with a pair of connection holes 1 and a pair of waist-shaped holes, so that the first connection path between the slot-type connection fitting and the self-contained backup protection adjustment plate can be established by using the connection bolts B penetrating through the pair of connection holes 1 and the connection hole 2, and the second connection path between the slot-type connection fitting and the self-contained backup protection adjustment plate can be established by using the connection bolts C penetrating through the pair of waist-shaped holes and the arc-shaped groove. In this way, when the first connection path fails due to the need to adjust the overall length, the second connection path can be used to achieve the backup protection function, which effectively reduces the process of arranging backup protection measures for high-altitude operations, improves the work efficiency, and also improves the safety factor, avoiding the occurrence of falling. The pull ring of the slot-type tension clamp is connected to the right end of a pair of strip plates of the slot-type connection fitting through the connecting stud E, which is conducive to the quick and reliable connection of the slot-type connection fitting length adjustment system with the conductor. The device has a simple structure, low manufacturing cost, high reliability and good safety factor. It can quickly and safely adjust the overall length of the hardware, which is beneficial to ensure the safe operation of overhead power lines and the normal production and living electricity use of the majority of residents.

[0082] The present invention also provides a method for adjusting the length of a slot-type connection fitting, which adopts a slot-type connection fitting length adjustment system, wherein a double T-shaped connecting plate 21 at one end of the slot-type connection fitting length adjustment system is connected to the tower side through a connecting screw F78 passing through a pair of connecting holes G24, and a tension clamp 4 at the other end of the slot-type connection fitting length adjustment system is connected to the conductor side through a conical contraction section 72, comprising the following steps:

[0083] Step 1: The aerial worker climbs the tower to the position of the spiral length adjustment fitting 1, first uses a wrench to rotate the positioning platform 8 to the middle of the lead screw bolt 5, and then uses a wrench to rotate the lead screw bolt 5 on the spiral length adjustment fitting 1, through the trapezoidal thread 9 and the thread of the lower trapezoidal thread hole 36, the rotating lead screw bolt 5 drives the lower connecting platform 17 to move towards or away from the upper connecting platform 12, so as to extend or shorten the overall length of the slotted connecting fitting length adjustment system. When the adjustment reaches the limit state, execute step 2;

[0084] Step 2: First, the aerial worker installs a tension recovery tool on the conductor, and uses the tension recovery tool to recover the conductor tension. Then, the connecting bolt B63 is removed from the connecting group B with a wrench. In this process, the connecting bolt C64 inserted in the arc groove 54 is used to maintain the connection state between the groove-type connecting hardware 3 and the built-in backup protection adjustment plate 2, and ensure that there is a sliding adjustment space between the two. Then, the groove-type connecting hardware 3 is moved to further extend or shorten the overall length of the groove-type connecting hardware length adjustment system. After reaching the set length, a pair of connecting holes three 60 and an adjusted connecting hole two 53 are aligned to re-form a new connecting hole group B, and then the connecting bolt B63 is passed through the new connecting hole group B and connected to the locking nut B through threaded cooperation, and the groove-type connecting hardware 3 and the built-in backup protection adjustment plate 2 are connected together with the connecting bolt C64;

[0085] Step 3: Use a wrench to rotate the positioning platform 8 to a position where it fits the upper connecting platform 12 , and further rotate the positioning platform 8 so that it presses the upper connecting platform 12 against the lower end of the rotating platform 7 .

[0086] As a preferred embodiment, in step one, when the lead screw bolt 5 needs to rotate in the reverse direction, the ratchet disc brake device 13 is first controlled to release the reverse braking restriction on the ratchet disc 6, and then the lead screw bolt 5 is rotated in the reverse direction.

[0087] The method has simple steps and a safe and convenient operation process, and realizes a rapid adjustment process of the length of the hardware. At the same time, it effectively reduces the probability of falling during high-altitude operations, improves operating efficiency, and effectively ensures personal and equipment safety.

Claims

1. A slot-type connection fitting length adjustment system, comprising a spiral length adjustment fitting (1); characterized in that: It also includes a self-contained backup protection adjustment plate (2), a connecting bolt A (57), a groove-type connecting hardware (3), a connecting bolt B (63), a connecting bolt C (64), a groove-type tension clamp (4) and a connecting stud E (75); The spiral length adjustment fitting (1) comprises an upper connecting platform (12), a lower connecting platform (17), a lead screw bolt (5), a positioning platform (8), a protective nut (10), a protective pin (11), a ratchet disc brake device (13), a double T-shaped connecting plate 1 (21), a double T-shaped connecting plate 2 (25), a connecting plate 1 (29), a connecting plate 2 (30), a connecting plate 3 (31), a connecting plate 4 (32), a connecting bolt 1 (44), a connecting bolt 5 (48), a connecting bolt 2 (45), a connecting bolt 6 (49), a connecting bolt 3 (46), a connecting bolt 7 (50), a connecting bolt 4 (47) and a connecting bolt 8 (51); The upper connecting platform (12) and the lower connecting platform (17) are arranged oppositely in the upper and lower directions; an upper through hole (33) is provided at the center of the upper connecting platform (12) and runs through the thickness direction, and a rotating platform mounting groove (14) is provided coaxially on the outer periphery of the upper end of the upper through hole (33); a pair of connecting ear plates (14) are fixedly connected to the left end of the upper connecting platform (12), and a pair of connecting holes A (15) are relatively provided on the pair of connecting ear plates (14); a pair of connecting ear plates (35) are fixedly connected to the right end of the upper connecting platform (12), and a pair of connecting holes A (15) are relatively provided on the pair of connecting ear plates (34); A pair of connecting holes B (16) are formed on the connecting ear plate 2 (35) in opposite directions; a lower trapezoidal threaded hole (36) is formed in the center of the lower connecting platform (17) and runs through the thickness direction; a pair of connecting ear plates 3 (37) are fixedly connected to the left end of the lower connecting platform (17), and a pair of connecting holes C (19) are formed on the pair of connecting ear plates 3 (37) in opposite directions; a pair of connecting ear plates 4 (38) are fixedly connected to the right end of the lower connecting platform (17), and a pair of connecting holes D (20) are formed on the pair of connecting ear plates 4 (38) in opposite directions; The rod body of the lead screw bolt (5) is provided with a trapezoidal thread (9) throughout the length direction, and a pin hole A (39) is radially opened at the end, and a ratchet plate (6) and a rotating table (7) are coaxially fixedly mounted on the head end in sequence, wherein the ratchet plate (6) is arranged close to the nut, and the size of the rotating table (7) is adapted to the size of the rotating table mounting groove (14); the rod body end of the lead screw bolt (5) first slides through the upper through hole (33) of the upper connecting table (12), and then passes through the lower trapezoidal threaded hole (36) of the lower connecting table (17) through threaded engagement, and the pin hole A (39) is located below the lower connecting table (17), and the rotating table (7) is rotatably embedded in the rotating table mounting groove (14); The center of the positioning platform (8) is provided with a trapezoidal thread hole adapted to the trapezoidal thread (9); the positioning platform (8) is arranged between the upper connecting platform (12) and the lower connecting platform (17), and is fixedly mounted on the rod body of the lead screw bolt (5) through threaded matching, and the upper connecting platform (12) is pressed tightly against the lower end of the rotating platform (7); The protective nut (10) is provided with a through pin hole B corresponding to the pin hole A (39); the protective nut (10) is fixedly sleeved on the end of the rod body of the lead screw bolt (5) through threaded matching, and the through pin hole B is aligned with the pin hole A (39); the protective pin (11) is inserted into the aligned through pin hole B and the pin hole A (39); The ratchet disc brake device (13) is located outside the rotating platform mounting groove (14) and is fixedly connected to the upper end surface of the upper connecting platform (12). The ratchet teeth in the ratchet disc brake device (13) are meshed with the ratchet disc (6) to prevent the ratchet disc (6) from rotating in the opposite direction. The double T-type connecting plate 1 (21) and the double T-type connecting plate 2 (25) are relatively distributed on the left and right sides of the middle section of the lead screw bolt (5); the double T-type connecting plate 1 (21) is T-shaped as a whole, and has a pair of longitudinal extension sections 1 (40) and a pair of transverse extension sections 1 (41) distributed at intervals, and a pair of connecting holes E (22) and a pair of connecting holes F (23) are respectively opened at the upper and lower ends of the pair of longitudinal extension sections 1 (40), and a pair of connecting holes G (24) are opened at the ends of the pair of transverse extension sections 1 (41); the double T-type connecting plate 2 (25) is T-shaped as a whole, and has a pair of longitudinal extension sections 2 (42) and a pair of transverse extension sections 2 (43) distributed at intervals, and a pair of connecting holes H (26) and a pair of connecting holes I (27) are respectively opened at the upper and lower ends of the pair of longitudinal extension sections 2 (42), and a pair of connecting holes J (28) are opened at the ends of the pair of transverse extension sections 2 (43); The connecting plate 1 (29), connecting plate 2 (30), connecting plate 3 (31) and connecting plate 4 (32) are all strip-shaped plates of the same size and are provided with mounting holes (18) at both ends; The left and right ends of the connecting plate 1 (29) are respectively inserted between the upper ends of a pair of longitudinal extension sections 1 (40) and between a pair of connecting ear plates 1 (34), and the mounting hole (18) at the left end thereof and the pair of connecting holes E (22) are aligned to form a connecting hole group 1, and the mounting hole (18) at the right end thereof and the pair of connecting holes A (15) are aligned to form a connecting hole group 2; The left and right ends of the connecting plate 2 (30) are respectively inserted between a pair of connecting ear plates 2 (35) and between the upper ends of a pair of longitudinal extension sections 2 (42), and the mounting hole (18) at the left end thereof is aligned with a pair of connecting holes B (16) to form a connecting hole group 3, and the mounting hole (18) at the right end thereof is aligned with a pair of connecting holes H (26) to form a connecting hole group 4; The left and right ends of the connecting plate three (31) are respectively inserted between the lower ends of a pair of longitudinal extension sections one (40) and between a pair of connecting ear plates three (37), and the mounting hole (18) at the left end thereof and the pair of connecting holes F (23) are aligned to form a connecting hole group five, and the mounting hole (18) at the right end thereof and the pair of connecting holes C (19) are aligned to form a connecting hole group six; The left and right ends of the connecting plate 4 (32) are respectively inserted between a pair of connecting ear plates 4 (38) and between the lower ends of a pair of longitudinal extension sections 2 (42), and the mounting hole (18) at the left end thereof and the pair of connecting holes D (20) are aligned to form a connecting hole group 7, and the mounting hole (18) at the right end thereof and the pair of connecting holes I (27) are aligned to form a connecting hole group 8; The connecting bolt 1 (44) passes through the connecting hole group 1 and is connected to the locking nut 1 through threaded cooperation, thereby connecting the left end of the connecting plate 1 (29) to the double T-shaped connecting plate 1 (21); the connecting bolt 5 (48) passes through the connecting hole group 2 and is connected to the locking nut 5 through threaded cooperation, thereby connecting the right end of the connecting plate 1 (29) to the upper connecting platform (12); The second connecting bolt (45) passes through the third connecting hole group and is connected to the second locking nut by threaded fit, thereby connecting the left end of the second connecting plate (30) to the upper connecting platform (12); the sixth connecting bolt (49) passes through the fourth connecting hole group and is connected to the sixth locking nut by threaded fit, thereby connecting the right end of the second connecting plate (30) to the second double T-shaped connecting plate (25); The connecting bolt three (46) passes through the connecting hole group five and is connected to the locking nut three by threaded fit, thereby connecting the left end of the connecting plate three (31) to the double T-shaped connecting plate one (21); the connecting bolt seven (50) passes through the connecting hole group six and is connected to the locking nut seven by threaded fit, thereby connecting the right end of the connecting plate three (31) to the lower connecting platform (17); The connecting bolt four (47) passes through the connecting hole group seven and is connected to the locking nut four by threaded fit, thereby connecting the left end of the connecting plate four (32) to the lower connecting platform (17); the connecting bolt eight (51) passes through the connecting hole group eight and is connected to the locking nut eight by threaded fit, thereby connecting the right end of the connecting plate four (32) to the double T-shaped connecting plate two (25); The self-contained backup protection adjustment plate (2) is a special-shaped plate member, the left end of which protrudes to the left to form a connecting ear plate five (55), and a connecting hole one (52) is provided on the connecting ear plate five (55), and the right end thereof extends in an arc shape to form an arc-shaped plate body (56), and an arc-shaped groove (54) is provided on the edge of the arc-shaped plate body (56), and a plurality of connecting holes two (53) are provided at intervals on the inner side of the arc-shaped plate body (56), and the plurality of connecting holes two (53) are distributed in an arc shape with the same arc as the arc-shaped groove (54); the connecting ear plate five (55) of the self-contained backup protection adjustment plate (2) is inserted between a pair of transverse extension sections two (43), and the connecting hole one (52) is aligned with a pair of connecting holes J (28) to form a connecting hole group A; The connecting bolt A (57) passes through the connecting hole group A and is connected to the locking nut A through threaded matching, thereby connecting the left end of the self-contained backup protection adjustment plate (2) with the double T-shaped connecting plate 2 (25); The groove-type connecting hardware (3) is composed of a pair of strip plates (58) and a connecting block (59), wherein the pair of strip plates (58) are relatively distributed, and the connecting block (59) is located in the right region between the pair of strip plates (58) and is respectively fixedly connected to the pair of strip plates (58); a pair of connecting holes three (60), a pair of waist-shaped holes (62) and a pair of connecting holes four (61) are respectively relatively opened at the left end, the left part of the middle part and the right end of the pair of strip plates (58); the left part of the pair of strip plates (58) in the groove-type connecting hardware (3) is sleeved on the outside of the arc-shaped plate (56), and the pair of connecting holes three (60) and the one connecting hole two (53) are aligned to form a connecting hole group B, and the pair of waist-shaped holes (62) and the arc-shaped groove (54) are aligned to form a connecting hole group C; The connecting bolt B (63) passes through the connecting hole group B and is connected to the locking nut B through threaded cooperation. The connecting bolt C (64) passes through the connecting hole group C and is connected to the locking nut C through threaded cooperation. The connecting bolt B (63) and the connecting bolt C (64) cooperate with each other to connect the groove-type connecting fitting (3) and the self-contained backup protection adjustment plate (2) together. The groove-type tension clamp (4) comprises a tension clamp body (65), a steel anchor (66), a drainage plate assembly (67) and a drainage clamp (68); the tension clamp body (65) is a hollow tubular structure, with an axial cavity (73) at its axis, and a conical contraction section (72) at its right end; the steel anchor (66) is composed of a pull ring (69) and an anchor rod (70) fixedly connected to the right end of the pull ring (69); the pull ring (69) is a single-ear ring with a connection hole (71) thereon; the anchor rod (70) is fixedly inserted into the tension clamp body (65), and The pull ring (69) is exposed on the outside of the left end of the tension clamp body (65); the guide plate assembly (67) is arranged on one side outside the tension clamp body (65), and its front end is fixedly connected to the tension clamp body (65); the drainage clamp (68) is parallel to the guide plate assembly (67), and its front end is fixedly connected to the end of the guide plate assembly (67) through a plurality of connecting bolts D (74); the pull ring (69) is inserted between the right ends of a pair of strip plates (58), and the connection hole five (71) is aligned with a pair of connection holes four (61) to form a connection hole group D; The connecting stud E (75) passes through the connecting hole group D and is connected to the locking nut E through threaded cooperation, thereby connecting the slot-type tension clamp (4) and the slot-type connecting hardware (3) together.

2. A slotted connection fitting length adjustment system according to claim 1, characterized in that: The left section of the inner cavity of the tension clamp body (65) is provided with an internal thread structure, and the left outer side of the anchor rod (70) is provided with an external thread structure. The anchor rod (70) is fixedly inserted into the tension clamp body (65) through the threaded cooperation between the external thread structure and the internal thread structure.

3. A slotted connection fitting length adjustment system according to claim 1 or 2, characterized in that: The double T-shaped connecting plate 1 (21) and the double T-shaped connecting plate 2 (25) have the same structure and shape, and are both composed of two T-shaped connecting plates (76) and a strip block (77). The two T-shaped connecting plates (76) are relatively distributed up and down, and the strip block (77) is located between the two T-shaped connecting plates (76) and is fixedly connected to the two T-shaped connecting plates (76) respectively.

4. A slotted connection fitting length adjustment system according to claim 3, characterized in that: The number of the second connecting holes (53) is five.

5. A method for adjusting the length of a slot-type connection fitting, using a slot-type connection fitting length adjustment system as claimed in any one of claims 1 to 4, wherein: A double T-shaped connecting plate (21) at one end of the slot-type connecting fitting length adjustment system is connected to the tower side via a connecting screw F (78) inserted through a pair of connecting holes G (24), and a tension clamp (4) at the other end of the slot-type connecting fitting length adjustment system is connected to the conductor side via a conical contraction section (72), and is characterized in that it comprises the following steps: Step 1: The aerial worker climbs up the tower to the position of the spiral length adjustment fitting (1), first uses a wrench to rotate the positioning platform (8) to the position of the middle section of the lead screw bolt (5), and then uses a wrench to rotate the lead screw bolt (5) on the spiral length adjustment fitting (1), and through the engagement of the trapezoidal thread (9) with the thread of the lower trapezoidal thread hole (36), the rotating lead screw bolt (5) drives the lower connecting platform (17) to move toward or away from the upper connecting platform (12), so as to achieve the purpose of extending or shortening the overall length of the slotted connecting fitting length adjustment system. When the adjustment reaches the limit state, step 2 is executed; Step 2: First, the aerial worker installs a tension recovery tool on the conductor and uses the tension recovery tool to recover the conductor tension. Then, the connecting bolt B (63) is removed from the connecting group B using a wrench. During this process, the connecting bolt C (64) inserted into the arc groove (54) is used to maintain the connection between the slot-type connecting hardware (3) and the self-contained backup protection adjustment plate (2), and ensure that there is a sliding adjustment space between the two. Then, the slot-type connecting hardware (3) is moved to further extend or shorten the length of the slot-type connecting hardware length adjustment system as a whole. After reaching the set length, a pair of connecting holes three (60) and an adjusted connecting hole two (53) are aligned to form a new connecting hole group B. Then, the connecting bolt B (63) is passed through the new connecting hole group B and connected to the locking nut B through threaded cooperation, and the slot-type connecting hardware (3) and the self-contained backup protection adjustment plate (2) are connected together with the connecting bolt C (64); Step 3: Use a wrench to rotate the positioning platform (8) to a position where it fits the upper connecting platform (12), and further rotate the positioning platform (8) so that it presses the upper connecting platform (12) against the lower end of the rotating platform (7).

6. A method for adjusting the length of a slotted connection fitting according to claim 5, characterized in that: In step 1, when the lead screw bolt (5) needs to rotate in the reverse direction, the ratchet disc brake device (13) is first controlled to release the reverse braking restriction on the ratchet disc (6), and then the lead screw bolt (5) is rotated in the reverse direction.

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