Bidirectional upper-limit-free adjusting type overhead cable tensioning device and method thereof

Abstract

The invention discloses a bidirectional upper-limit-free adjusting type overhead cable tensioning device and method, and belongs to the technical field of cable tensioning. The device comprises an overhead chassis, and a tensioning disc is rotationally installed on the upper surface of the overhead chassis; a locking disc located on the inner side of the tensioning disc is fixedly installed on the upper surface of the overhead chassis through a lifting base, and the locking disc can be matched to complete one-way locking on the inner side of the locking disc and one-way locking on the outer side of the locking disc. A first tensioning mechanism located on the inner side of the locking disc and a second tensioning mechanism located on the outer side of the locking disc are installed on the overhead chassis. The cable tensioning device is used for tensioning cables such as electric wires and cables, the first tensioning mechanism and the second tensioning mechanism are used for sequentially and bidirectionally tensioning the cables, the first tensioning mechanism is used for adjusting the radius of the cables before the cables are rotated and tensioned, then the second tensioning mechanism is used for rotating and tensioning, the maximum tensioning length of the cables does not have the upper limit, and the tensioning efficiency is improved. And after tensioning, automatic locking is achieved, and the stability and reliability after tensioning are high.

Description

Technical Field

[0001] The invention relates to the technical field of cable tensioning, and in particular to a bidirectional unlimited upper limit adjustable overhead cable tensioning device and a method thereof. Background Art

[0002] Wires and cables are essential components for power transmission in electrification and other equipment. Cable tensioning refers to the use of specific equipment and technical means to keep the cable in proper tension during cable laying or installation, to prevent the cable from loosening or sagging due to its own gravity or other external forces, so as to ensure the safe operation and long-term stability of the cable.

[0003] In the existing patent documents, there is a patent with a publication number of CN 205911711 U and a name of "A device for convenient wire tensioning", and a patent with a publication number of CN 208508388 U and a name of "A device for tensioning wires for overhead power lines". The above devices for tensioning cables, when used in actual applications, have a certain maximum length of the cables tensioned, that is, there is an upper limit to the length of the cables tensioned by the device. For aerial lines that are spaced far apart, since the length of the cables is too long, the length tensioned at a single time is also large. Such devices for tensioning cables cannot meet the above requirements, resulting in relatively poor versatility. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a bidirectional unlimited-limit adjustable overhead cable tensioning device and method thereof. The device adopts a first tensioning mechanism and a second tensioning mechanism to successively tension the cable in both directions. The radius of the cable before being rotated and tightened is first adjusted by the first tensioning mechanism, and then the cable is rotated and tightened by the second tensioning mechanism. There is no upper limit on the maximum tensioning length of the cable, and it is automatically locked after tensioning. The stability and reliability after tensioning are high, and its versatility in practical applications will be better.

[0005] To solve the above technical problems, the technical solution of the present invention is achieved as follows:

[0006] A bidirectional unlimited-upper-limit adjustable overhead cable tensioning device, comprising an overhead chassis, a tensioning disc rotatably mounted on the upper surface of the overhead chassis via an annular slideway, two mutually parallel and mutually perpendicular cable tie rods fixed at the center of the tensioning disc, a cable winding cap rotatably mounted on the cable tie rod, wherein the cable is led between the cable winding caps of the two cable tie rods;

[0007] The upper surface of the overhead chassis is fixedly mounted with a locking disc located inside the tension disc through a lifting seat, and the locking disc can cooperate to complete the one-way locking of the inner side and the one-way locking of the outer side respectively;

[0008] A first tensioning mechanism located inside the locking disc and a second tensioning mechanism located outside the locking disc are installed on the overhead chassis, wherein the first tensioning mechanism and the second tensioning mechanism perform tensioning work in sequence;

[0009] The first tensioning mechanism includes a motor 1 fixedly mounted on the lower surface of the overhead chassis, a gear 1 is concentrically fixed on the rotating shaft of the motor 1 through an integrated component integrating coaxial transmission, transmission switching, and one-way self-locking, and two parallel racks are meshed with each other on the gear 1; the rack is plugged and fixed on a tensioning rod that is parallel to the cable tie rod and slides in a slide groove 1, and a winding cap is rotatably mounted on the tensioning rod, wherein the cable is gradually linearly tightened after passing the winding cap on the tensioning rod;

[0010] The second tensioning mechanism includes a second motor fixedly mounted on the lower surface of the overhead chassis, a second gear is concentrically fixed to the rotating shaft of the second motor through a coupling, a toothed disc located on the same plane as the second gear is fixed to the outer side of the tensioning disc, and the toothed disc and the second gear are meshed through a toothed chain for transmission; when the tensioning disc is driven to rotate, the cable can be rotated and tightened.

[0011] By adopting the above scheme, the device uses the first tensioning mechanism and the second tensioning mechanism to perform bidirectional tensioning of the cable in sequence. The radius of the cable before being rotated and tightened is first adjusted by the first tensioning mechanism, and then the cable is rotated and tightened by the second tensioning mechanism. There is no upper limit on the maximum tensioning length of the cable, and it is automatically locked after tensioning. The stability and reliability after tensioning are high, and its versatility in practical applications will be better.

[0012] As a preferred embodiment of a bidirectional unlimited-limit adjustable overhead cable tensioning device, a screw rod is installed through the top of the two cable tie rods, and a nut is installed at the end of the screw rod to tighten the screw rod to the top of the cable tie rod. At this time, the cable is located under the screw rod.

[0013] By adopting the above solution, in order to ensure the stability of the cable before tensioning, a screw rod is used to press the center of the cable before tensioning, so that the cable will not fall off during the subsequent tensioning process.

[0014] As a preferred implementation of a bidirectional unlimited-upper-limit adjustable overhead cable tensioning device, a base is fixed to the bottom edge of the winding cap, and both the winding cap and the base are made of insulating rubber material.

[0015] In order to avoid direct contact between the cable and the tensioning disk, a bottom support is provided at the bottom of the winding cap to isolate the cable from components such as the tensioning disk, thereby ensuring safety during tensioning.

[0016] As a preferred embodiment of a bidirectional unlimited-limit adjustable overhead cable tensioning device, L-shaped auxiliary sliding rods are respectively inserted and fixed on both sides of the tensioning rod, and the L-shaped auxiliary sliding rod is slidably installed in a second sliding groove parallel to the first sliding groove.

[0017] In order to further improve the stability of the take-up rod when sliding, an L-shaped auxiliary sliding rod is installed to guide the sliding of the take-up rod, thereby improving the stability of the take-up rod when sliding.

[0018] As a preferred embodiment of a bidirectional unlimited-limit adjustable overhead cable tensioning device, the integrated component includes an integrated shell concentrically fixedly mounted on a lower surface of the gear, a transmission shaft is installed in the integrated shell in a limiting manner from the inside to the outside, and at least one group of limiting ribs are fixed along the axial side of the transmission shaft; a transmission sleeve concentrically fixed on a rotating shaft of a motor is provided for transmission below the limiting ribs, and a docking interface for use with the transmission shaft and the limiting ribs is provided on the upper surface of the transmission sleeve.

[0019] By adopting the above scheme, in order to realize the coaxial transmission of the integrated component, when the integrated housing is matched in the docking port through the transmission shaft and the limiting ribs, the motor 1 can realize the coaxial transmission of the gear 1.

[0020] As a preferred embodiment of a bidirectional unlimited-limit adjustable overhead cable tensioning device, the top of the transmission shaft is fixed on a guide plate, the guide plate is slidably mounted on two guide shafts fixed in an integrated shell, and the guide shaft is sleeved with a spring for pushing the guide plate to move downward; an iron block is fixed above the guide plate, and an electromagnet is fixed inside the integrated shell and is located directly above the iron block, and the electromagnet consists of an iron core and a coil.

[0021] By adopting the above scheme, in order to realize the transmission switching of the integrated component, when the coil is energized, the electromagnet can absorb the iron block to overcome the elastic force of spring one and move upward. At this time, the transmission shaft and the limit rib are separated from the docking interface, thereby realizing the transmission switching between motor one and motor two.

[0022] As a preferred embodiment of a bidirectional unlimited-limit adjustable overhead cable tensioning device, at least two self-locking components are installed on the side wall of the integrated shell and used in conjunction with the inner side of the locking disc; the self-locking component includes an L-shaped self-locking probe that passes through the side wall of the integrated shell, and the L-shaped self-locking probe is slidably installed on a guide shaft fixed on the side wall of the integrated shell, and the guide shaft is sleeved with a spring that pushes the L-shaped self-locking probe to move toward the ratchet on the inner side of the locking disc.

[0023] By adopting the above scheme, in order to achieve one-way self-locking of the integrated component, the L-shaped self-locking probe 1 always extends between two adjacent ratchets on the inner side of the locking disk under the elastic action of the spring 2, so that the integrated component cannot rotate reversely after rotation.

[0024] As a preferred embodiment of a bidirectional unlimited-limit adjustable overhead cable tensioning device, at least two self-locking components 2 are installed on the side wall of the tensioning disk and are used in conjunction with the outer side of the locking disk; the self-locking component 2 includes an L-shaped self-locking probe 2 that passes through the side wall of the tensioning disk, and the L-shaped self-locking probe 2 is slidably installed on a guide shaft 3 fixed on the side wall of the tensioning disk, and the guide shaft 3 is sleeved with a spring 3 that pushes the L-shaped self-locking probe 2 to move toward the ratchet on the outer side of the locking disk; under the elastic action of the spring 3, the L-shaped self-locking probe 2 always extends between two adjacent ratchet teeth on the outer side of the locking disk, so that the tensioning disk cannot rotate reversely after rotation.

[0025] By adopting the above scheme, in order to achieve one-way self-locking of the tension disk, the L-shaped self-locking probe 2 always extends between two adjacent ratchet teeth on the outer side of the locking disk under the elastic action of the spring 3, so that the tension disk cannot rotate reversely after rotation.

[0026] As a preferred implementation of a bidirectional unlimited-limit adjustable overhead cable tensioning device, the diameter of gear 2 is smaller than the diameter of the toothed disc.

[0027] By adopting the above scheme, in order to reduce the driving load of Motor 2, the diameter of Gear 2 is designed to be smaller and the diameter of the toothed disc is designed to be larger. When the two are transmitting, Motor 2 will be more "labor-saving", thereby reducing the driving load of Motor 2.

[0028] A bidirectional unlimited upper limit adjustable overhead cable tensioning method is implemented using the bidirectional unlimited upper limit adjustable overhead cable tensioning device, and the implementation steps are as follows:

[0029] S1. Lead the cable to be overhead between the winding caps of the two cable tie rods, and then pass the screw rod through the top of the two cable tie rods. At this time, the cable is blocked between the two cable tie rods under the cooperation of the screw rod and the nut, and then the cable is wound around the winding cap on the tension rod;

[0030] S2. First, adjust the radius of the cable before it is rotated and tightened by the first tensioning mechanism; start the motor 1, and drive the gear 1 to rotate through the integrated component. At this time, the two tensioning rods gradually move away from the location of the cable tie rod. At this time, the cable is continuously linearly tensioned under the tension of the two tensioning rods, and the two tensioning rods cannot move reversely under the joint locking of the self-locking component 1 and the locking disc after being moved, so as to ensure the reliability after tensioning; if the cable reaches a fully tensioned state during this process, the cable tensioning work is completed; if the cable is still in a loose state during this process, the cable tensioning work continues;

[0031] S3, the cable tensioning work continues, the radius of the cable before being rotated and tightened is adjusted to the maximum through the first tensioning mechanism, and then the cable is rotated and tensioned continuously through the second tensioning mechanism; the coil is energized first, and the electromagnet can absorb the iron block to overcome the elastic force of the spring 1 and move upward, and the transmission shaft and the limit rib are separated from the docking interface, thereby realizing the transmission switching between the motor 1 and the motor 2;

[0032] S4, start motor 2, which drives gear 2 to rotate through the coupling, drives the toothed disc to rotate under the transmission of the toothed chain, and finally drives the tensioning disc to rotate. After the tensioning disc is rotated, it cannot be reversely rotated under the joint locking of self-locking component 2 and the locking disc to ensure the reliability after tensioning; the cable tensioning work is completed until the cable is in a fully tensioned state.

[0033] After adopting the above technical solution, the beneficial effects of the present invention are:

[0034] 1. The device uses the first tensioning mechanism and the second tensioning mechanism to tension the cable in both directions. The radius of the cable before rotation and tensioning is adjusted by the first tensioning mechanism, and then the cable is rotated and tightened by the second tensioning mechanism. There is no upper limit on the maximum tensioning length of the cable, and it is automatically locked after tensioning. The stability and reliability after tensioning are high, and its versatility in practical applications will be better;

[0035] 2. In order to ensure the stability of the cable before tensioning, a screw rod is used to press the center of the cable before tensioning, so that the cable will not fall off during the subsequent tensioning process;

[0036] 3. In order to avoid direct contact between the cable and the tensioning disk, a bottom support is provided at the bottom of the winding cap to isolate the cable from the tensioning disk and other components, thereby ensuring safety during tensioning;

[0037] 4. In order to further improve the stability of the tension rod when sliding, an L-shaped auxiliary sliding rod is installed to guide the sliding of the tension rod, thereby improving the stability of the tension rod when sliding;

[0038] 5. In order to realize the coaxial transmission of the integrated component, when the integrated housing is matched in the docking interface through the transmission shaft and the limit rib, the motor 1 can realize the coaxial transmission of the gear 1; in order to realize the transmission switching of the integrated component, when the coil is energized, the electromagnet can absorb the iron block to overcome the elastic force of the spring 1 and then move upward, at which time the transmission shaft and the limit rib are separated from the docking interface, thereby realizing the transmission switching between the motor 1 and the motor 2; in order to realize the one-way self-locking of the integrated component, the L-shaped self-locking probe 1 always extends between the two adjacent ratchet teeth on the inner side of the locking disc under the elastic action of the spring 2, so that the integrated component cannot rotate reversely after rotation;

[0039] 6. In order to realize the one-way self-locking of the tension disk, the L-shaped self-locking probe 2 is always extended between two adjacent ratchet teeth on the outer side of the locking disk under the elastic action of the spring 3, so that the tension disk cannot rotate reversely after rotating;

[0040] 7. In order to reduce the driving load of motor 2, the diameter of gear 2 is designed to be smaller and the diameter of the toothed disc is designed to be larger. The two will make motor 2 more "labor-saving" during transmission, thereby reducing the driving load of motor 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0042] Figure 1 It is a three-dimensional structural diagram of the present invention when the radius of the cable before being rotated and tightened is adjusted by the first tightening mechanism;

[0043] Figure 2 It is a three-dimensional structural diagram of the present invention when the second tensioning mechanism is used for rotation tensioning;

[0044] Figure 3 To display along the vertical cable length Figure 1 A three-dimensional structural diagram of the internal structure;

[0045] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0046] Figure 5 To display along the length of parallel cables Figure 1 A three-dimensional structural diagram of the internal structure;

[0047] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0048] Figure 7 To display along the vertical cable length Figure 2 A three-dimensional structural diagram of the internal structure;

[0049] Figure 8 for Figure 7 A partial enlarged view of point C in the middle;

[0050] Fig. 9 To display along the length of parallel cables Figure 2 A three-dimensional structural diagram of the internal structure;

[0051] Fig.10 for Fig. 9 A partial enlarged view of point D in the middle;

[0052] Fig.11 for Figure 1 A three-dimensional structural diagram of the middle tension plate and its internal components;

[0053] Fig.12 To hide Fig.11 The three-dimensional structure diagram behind the middle tension plate;

[0054] Fig.13 for Fig.12 A three-dimensional structural diagram of the integrated components;

[0055] Fig.14 for Fig.13 A three-dimensional structural diagram of the integrated housing;

[0056] Fig.15 for Fig.13 The three-dimensional structure diagram of the middle transmission sleeve;

[0057] Fig.16 For horizontal display Fig.14 A three-dimensional structural diagram of the internal structure;

[0058] Fig.17 For vertical display Fig.14 A three-dimensional structural diagram of the internal structure;

[0059] Fig.18 for Figure 5 A partial enlarged view of point E in the middle;

[0060] Markings in the figure: 1-empty chassis; 2-annular slideway; 3-tension plate; 4-cable rod; 5-winding cap; 6-lifting seat; 7-locking disc; 8-motor 1; 9-gear 1; 10-rack; 11-slideway 1; 12-tension rod; 13-motor 2; 14-coupling; 15-gear 2; 16-toothed disc; 17-toothed chain; 18-screw rod; 19-nut; 20-bottom bracket; 21-L-shaped auxiliary Slide rod; 22-slide groove 2; 23-integrated housing; 24-transmission shaft; 25-limiting rib; 26-transmission sleeve; 27-docking port; 28-guide plate 1; 29-guide shaft 1; 30-spring 1; 31-iron block; 32-electromagnet; 33-L-shaped self-locking probe 1; 34-guide shaft 2; 35-spring 2; 36-L-shaped self-locking probe 2; 37-guide shaft 3; 38-spring 3; 39-cable. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] like Figures 1 to 13 As shown, a bidirectional unlimited upper limit adjustable overhead cable tensioning device is used for tensioning wires, cables and the like, and comprises an overhead chassis 1, a tensioning disc 3 is rotatably mounted on the upper surface of the overhead chassis 1 through an annular slideway 2, two cable tie rods 4 parallel to each other and perpendicular to the tensioning disc 3 are fixed at the center of the tensioning disc 3, a winding cap 5 is rotatably mounted on the cable tie rod 4, wherein a cable 39 is passed between the winding caps 5 of the two cable tie rods 4;

[0063] The upper surface of the overhead chassis 1 is fixedly mounted with a locking disc 7 located inside the tension disc 3 through a lifting seat 6, and the locking disc 7 can cooperate to complete the one-way locking of the inner side and the one-way locking of the outer side;

[0064] A first tensioning mechanism located inside the locking disc 7 and a second tensioning mechanism located outside the locking disc 7 are installed on the overhead chassis 1, wherein the first tensioning mechanism and the second tensioning mechanism perform tensioning work in sequence;

[0065] The first tensioning mechanism includes a motor 8 fixedly mounted on the lower surface of the overhead chassis 1, a gear 9 is concentrically fixed on the rotating shaft of the motor 8 through an integrated component integrating coaxial transmission, transmission switching, and one-way self-locking, and two parallel racks 10 are meshed with each other on the gear 9; the rack 10 is plugged and fixed on a tensioning rod 12 which is parallel to the cable tie rod 4 and slides in a slide groove 11, and a winding cap 5 is rotatably mounted on the tensioning rod 12, wherein the cable 39 is gradually linearly tightened after passing the winding cap 5 on the tensioning rod 12;

[0066] The second tensioning mechanism includes a second motor 13 fixedly mounted on the lower surface of the overhead chassis 1, a second gear 15 is concentrically fixed to the rotating shaft of the second motor 13 through a coupling 14, a toothed disc 16 located on the same plane as the second gear 15 is fixed to the outer side of the tensioning disc 3, and the toothed disc 16 and the second gear 15 are meshed and driven by a toothed chain 17; wherein the tensioning disc 3 can rotate and tighten the cable 39 when it is driven to rotate;

[0067] The device adopts a first tensioning mechanism and a second tensioning mechanism to perform bidirectional tensioning of the cable 39 in sequence. The radius of the cable 39 before being rotated and tightened is first adjusted by the first tensioning mechanism, and then the cable 39 is rotated and tightened by the second tensioning mechanism. There is no upper limit on the maximum tensioning length of the cable 39, and it is automatically locked after tensioning. It has high stability and reliability after tensioning, and its versatility in practical applications will be better.

[0068] like Fig.11 As shown, the top ends of the two cable tie rods 4 are penetrated by a screw rod 18, and the ends of the screw rods 18 are matched with nuts 19 for fixing the screw rods 18 to the top ends of the cable tie rods 4. At this time, the cable 39 is located under the screw rod 18. In order to ensure the stability of the cable 39 before tensioning, the screw rod 18 is used to press the center of the cable 39 before tensioning, so that the cable 39 will not fall off during the subsequent tensioning process.

[0069] like Fig.11 As shown, a bottom bracket 20 is fixed at the bottom edge of the winding cap 5, and both the winding cap 5 and the bottom bracket 20 are made of insulating rubber material. In order to prevent the cable 39 from directly contacting the tension disk 3, a bottom bracket 20 is provided at the bottom of the winding cap 5 to isolate the cable 39 from the tension disk 3 and other components, thereby ensuring safety during tensioning.

[0070] like Figure 11 to Figure 12 As shown, L-shaped auxiliary slide bars 21 are respectively inserted and fixed on both sides of the tension rod 12, and the L-shaped auxiliary slide bars 21 are slidably installed in the second slide groove 22 which is parallel to the first slide groove 11. In order to further improve the stability of the tension rod 12 when sliding, the L-shaped auxiliary slide bars 21 are installed to guide the tension rod 12 to slide, thereby improving the stability of the tension rod 12 when sliding.

[0071] like Figure 14 to Figure 15 As shown, the integrated assembly includes an integrated housing 23 fixedly mounted concentrically on the lower surface of the gear-9, and a transmission shaft 24 is installed in the integrated housing 23 from the inside to the outside in a limiting manner, and two sets of mutually symmetrical limiting ribs 25 are fixed to the shaft side of the transmission shaft 24 along its axial direction; a transmission sleeve 26 fixed concentrically on the rotating shaft of the motor-8 is matched with the lower part of the limiting rib 25, and a docking port 27 used in conjunction with the transmission shaft 24 and the limiting rib 25 is provided on the upper surface of the transmission sleeve 26. In order to realize the coaxial transmission of the integrated assembly, when the integrated housing 23 is matched in the docking port 27 through the transmission shaft 24 and the limiting rib 25, the motor-8 can realize the coaxial transmission of the gear-9.

[0072] like Figure 4 , Figure 6 , Figure 8 , Fig.10 as well as Fig.16As shown, the transmission shaft 24 is fixed on the guide plate 1 28, and the guide plate 1 28 is slidably mounted on two guide shafts 1 29 fixed in the integrated housing 23, and the guide shaft 1 29 is sleeved with a spring 1 30 that pushes the guide plate 1 28 to move downward; an iron block 31 is fixed on the guide plate 1 28, and an electromagnet 32 ​​located just above the iron block 31 is fixed inside the integrated housing 23, and the electromagnet 32 ​​is composed of an iron core and a coil. In order to realize the transmission switching of the integrated component, when the coil is energized, the electromagnet 32 ​​can absorb the iron block 31 to overcome the elastic force of the spring 1 30 and then move upward, at which time the transmission shaft 24 and the limiting rib 25 are separated from the docking interface 27, thereby realizing the transmission switching between the motor 1 8 and the motor 2 13.

[0073] like Figure 4 , Figure 6 , Figure 8 , Fig.10 as well as Fig.17 As shown, two self-locking components 1 are installed on the side wall of the integrated housing 23 and used in conjunction with the inner side of the locking disc 7; the self-locking component 1 includes an L-shaped self-locking probe 1 33 that penetrates the side wall of the integrated housing 23, and the L-shaped self-locking probe 1 33 is slidably installed on a guide shaft 2 34 fixed to the side wall of the integrated housing 23, and a spring 2 35 is sleeved on the guide shaft 2 34 to push the L-shaped self-locking probe 1 33 to move to the location of the ratchet inside the locking disc 7. In order to achieve the one-way self-locking of the integrated component, the L-shaped self-locking probe 1 33 always extends between two adjacent ratchet teeth inside the locking disc 7 under the elastic action of the spring 2 35, so that the integrated component cannot rotate in the reverse direction after rotating.

[0074] like Fig.18 As shown, two self-locking components 2 are installed on the side wall of the tension disk 3 and used in conjunction with the outer side of the locking disk 7; the self-locking component 2 includes an L-shaped self-locking probe 2 36 that penetrates the side wall of the tension disk 3, and the L-shaped self-locking probe 2 36 is slidably installed on a guide shaft 3 37 fixed on the side wall of the tension disk 3, and a spring 38 is sleeved on the guide shaft 3 37 to push the L-shaped self-locking probe 2 36 to move to the location of the ratchet on the outer side of the locking disk 7; the L-shaped self-locking probe 2 36 always extends between two adjacent ratchet teeth on the outer side of the locking disk 7 under the elastic action of the spring 3 38, so that the tension disk 3 cannot rotate reversely after rotation. In order to achieve the one-way self-locking of the tension disk 3, the L-shaped self-locking probe 2 36 always extends between two adjacent ratchet teeth on the outer side of the locking disk 7 under the elastic action of the spring 3 38, so that the tension disk 3 cannot rotate reversely after rotation.

[0075] like Figure 7 As shown, the diameter of gear 2 15 is smaller than the diameter of toothed disc 16. In order to reduce the driving load of motor 2 13, the diameter of gear 2 15 is designed to be smaller and the diameter of toothed disc 16 is designed to be larger. When the two are in transmission, motor 2 13 will be more "labor-saving", thereby reducing the driving load of motor 2 13.

[0076] A bidirectional unlimited upper limit adjustable overhead cable tensioning method is implemented using the bidirectional unlimited upper limit adjustable overhead cable tensioning device, and the implementation steps are as follows:

[0077] S1, lead the cable 39 to be overhead between the winding caps 5 of the two cable tie rods 4, and then pass the screw rod 18 through the top of the two cable tie rods 4. At this time, the cable 39 is blocked between the two cable tie rods 4 under the cooperation of the screw rod 18 and the nut 19, and then the cable 39 is wound around the winding cap 5 on the tension rod 12;

[0078] S2, first adjust the radius of the cable 39 before being rotated and tightened through the first tensioning mechanism; start the motor 8, and drive the gear 9 to rotate through the integrated component. At this time, the two tensioning rods 12 gradually move away from the location of the cable tie rod 4. At this time, the cable 39 is continuously linearly tensioned under the tension of the two tensioning rods 12, and the two tensioning rods 12 cannot move reversibly under the joint locking of the self-locking component 1 and the locking disc 7 after being moved, so as to ensure the reliability after tensioning; if the cable 39 reaches a fully tensioned state during this process, the tensioning work of the cable 39 is completed. Figure 1 As shown; if the cable 39 is still in a relaxed state during this process, the cable 39 tensioning work continues;

[0079] S3, the tensioning work of the cable 39 continues. After the radius of the cable 39 before being rotated and tightened is adjusted to the maximum through the first tensioning mechanism, the cable 39 is further rotated and tensioned through the second tensioning mechanism; the coil is energized first, and the electromagnet 32 ​​can absorb the iron block 31 and overcome the elastic force of the spring 1 30 and then move upward. At this time, the transmission shaft 24 and the limiting rib 25 are separated from the docking interface 27, thereby realizing the transmission switching between the motor 1 8 and the motor 2 13;

[0080] S4, start the motor 2 13, the motor 2 13 drives the gear 2 15 to rotate through the coupling 14, drives the toothed disc 16 to rotate under the transmission of the toothed chain 17, and finally drives the tensioning disc 3 to rotate. After the tensioning disc 3 is rotated, it cannot be reversely rotated under the joint locking of the self-locking component 2 and the locking disc 7 to ensure the reliability after tensioning; until the cable 39 is in a fully tensioned state, the tensioning work of the cable 39 is completed, such as Figure 2 shown.

[0081] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bidirectional unlimited-upper-limit adjustable overhead cable tensioning device, the device comprising an overhead chassis, a tensioning disc is rotatably mounted on the upper surface of the overhead chassis through an annular slideway, two cable tie rods parallel to each other and perpendicular to the tensioning disc are fixed at the center of the tensioning disc, a winding cap is rotatably mounted on the cable tie rod, wherein the cable is passed between the winding caps of the two cable tie rods; Features: The upper surface of the overhead chassis is fixedly mounted with a locking disc located inside the tension disc through a lifting seat, and the locking disc can cooperate to complete the one-way locking of the inner side and the one-way locking of the outer side respectively; The overhead chassis is provided with a first tensioning mechanism located inside the locking disc and a second tensioning mechanism located outside the locking disc, wherein the first tensioning mechanism and the second tensioning mechanism perform tensioning work in sequence; The first tensioning mechanism comprises a motor 1 fixedly mounted on the lower surface of the overhead chassis, a gear 1 is concentrically fixed on the rotating shaft of the motor 1 through an integrated component integrating coaxial transmission, transmission switching, and one-way self-locking, and two parallel racks are meshed with each other on the gear 1; the rack is plugged and fixed on a tensioning rod that is parallel to the cable tie rod and slides in a slide groove 1, and a winding cap is rotatably mounted on the tensioning rod, wherein the cable is gradually linearly tightened after passing the winding cap on the tensioning rod; The second tensioning mechanism includes a second motor fixedly mounted on the lower surface of the overhead chassis, a second gear is concentrically fixed to the rotating shaft of the second motor via a coupling, a toothed disc located on the same plane as the second gear is fixed to the outer side of the tensioning disc, and the toothed disc and the second gear are meshed with a toothed chain for transmission; when the tensioning disc is driven to rotate, the cable can be rotated and tightened.

2. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 1 is characterized in that: The top ends of the two cable tie rods are penetrated with screw rods, and the ends of the screw rods are matched with nuts for fastening the screw rods to the top ends of the cable tie rods. At this time, the cables are located under the screw rods.

3. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 2 is characterized in that: A bottom bracket is fixed at the bottom edge of the winding cap, and both the winding cap and the bottom bracket are made of insulating rubber material.

4. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 3 is characterized in that: L-shaped auxiliary sliding bars are respectively inserted and fixed on both sides of the tightening rod, and the L-shaped auxiliary sliding bars are slidably installed in a second sliding groove which is parallel to the first sliding groove.

5. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 4 is characterized in that: The integrated component includes an integrated shell concentrically fixedly installed on a lower surface of the gear, the integrated shell is provided with a transmission shaft installed in a limiting manner from the inside to the outside, and at least one group of limiting ribs are fixed along the axial direction of the shaft side of the transmission shaft; the transmission below the limiting rib is matched with a transmission sleeve concentrically fixed on the rotating shaft of motor 1, and the upper surface of the transmission sleeve is provided with a docking interface for use with the transmission shaft and the limiting ribs; when the integrated shell is matched in the docking interface through the transmission shaft and the limiting ribs, motor 1 can realize coaxial transmission of gear 1.

6. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 5 is characterized in that: The top of the transmission shaft is fixed on a guide plate 1, and the guide plate 1 is slidably installed on two guide shafts 1 fixed in the integrated shell, and the guide shaft 1 is sleeved with a spring 1 for pushing the guide plate 1 to move downward; an iron block is fixed above the guide plate 1, and an electromagnet is fixed inside the integrated shell and is located directly above the iron block, and the electromagnet consists of an iron core and a coil; when the coil is energized, the electromagnet can absorb the iron block to overcome the elastic force of the spring 1 and then move upward, at which time the transmission shaft and the limit rib are disengaged from the docking interface, thereby realizing the transmission switching between motor 1 and motor 2.

7. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 6, characterized in that: At least two self-locking components are installed on the side wall of the integrated shell and are used in conjunction with the inner side of the locking disc; the self-locking component includes an L-shaped self-locking probe that passes through the side wall of the integrated shell, and the L-shaped self-locking probe is slidably installed on a guide shaft fixed to the side wall of the integrated shell, and the guide shaft is sleeved with a spring that pushes the L-shaped self-locking probe to move toward the ratchet on the inner side of the locking disc; under the elastic action of the spring, the L-shaped self-locking probe always extends between two adjacent ratchets on the inner side of the locking disc, so that the integrated component cannot rotate reversely after rotation.

8. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 7 is characterized in that: At least two self-locking components 2 are installed on the side wall of the tensioning disk and are used in conjunction with the outer side of the locking disk; the self-locking component 2 includes an L-shaped self-locking probe 2 that passes through the side wall of the tensioning disk, and the L-shaped self-locking probe 2 is slidably installed on a guide shaft 3 fixed on the side wall of the tensioning disk, and the guide shaft 3 is sleeved with a spring 3 that pushes the L-shaped self-locking probe 2 to move toward the ratchet on the outer side of the locking disk; under the elastic action of the spring 3, the L-shaped self-locking probe 2 always extends between two adjacent ratchet teeth on the outer side of the locking disk, so that the tensioning disk cannot rotate reversely after rotation.

9. The bidirectional unlimited-upper-limit adjustable overhead cable tensioning device according to claim 8, characterized in that: The diameter of the second gear is smaller than the diameter of the toothed disc.

10. A bidirectional unlimited-upper-limit adjustable overhead cable tensioning method, characterized in that: The method is implemented using the bidirectional unlimited upper limit adjustable overhead cable tensioning device according to claim 9, and the implementation steps are as follows: S1. Lead the cable to be overhead between the winding caps of the two cable tie rods, and then pass the screw rod through the top of the two cable tie rods. At this time, the cable is blocked between the two cable tie rods under the cooperation of the screw rod and the nut, and then the cable is wound around the winding cap on the tension rod; S2. First, the radius of the cable before being rotated and tightened is adjusted by the first tensioning mechanism; the motor 1 is started, and the gear 1 is driven to rotate through the integrated component. At this time, the two tensioning rods gradually move away from the location of the cable tie rod. At this time, the cable is continuously linearly tensioned under the tension of the two tensioning rods. After the two tensioning rods are moved, they cannot move reversely under the joint locking of the self-locking component 1 and the locking disc, so as to ensure the reliability after tensioning; If the cable is fully tensioned during this process, the cable tensioning work is completed; if the cable is still in a relaxed state during this process, the cable tensioning work continues; S3, the cable tensioning work continues, the radius of the cable before being rotated and tightened is adjusted to the maximum through the first tensioning mechanism, and then the cable is rotated and tensioned continuously through the second tensioning mechanism; the coil is energized first, and the electromagnet can absorb the iron block to overcome the elastic force of the spring 1 and move upward, and the transmission shaft and the limit rib are separated from the docking interface, thereby realizing the transmission switching between the motor 1 and the motor 2; S4, start motor 2, which drives gear 2 to rotate through the coupling, drives the toothed disc to rotate under the transmission of the toothed chain, and finally drives the tensioning disc to rotate. After the tensioning disc is rotated, it cannot be reversely rotated under the joint locking of self-locking component 2 and the locking disc to ensure the reliability after tensioning; the cable tensioning work is completed until the cable is in a fully tensioned state.

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