CN114512949B - Cable suspension fitting for overhead transmission line - Google Patents
Cable suspension fitting for overhead transmission line Download PDFInfo
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- CN114512949B CN114512949B CN202210237957.2A CN202210237957A CN114512949B CN 114512949 B CN114512949 B CN 114512949B CN 202210237957 A CN202210237957 A CN 202210237957A CN 114512949 B CN114512949 B CN 114512949B
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- 239000000725 suspension Substances 0.000 title claims abstract description 30
- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims description 42
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/05—Suspension arrangements or devices for electric cables or lines
Abstract
The invention discloses a cable suspension fitting for an overhead transmission line, which comprises a lower clamping plate and a movable cover plate, wherein a plurality of fixing screws are arranged at the lower part of the lower clamping plate and fixedly arranged on a cable bridge; be equipped with the arc recess that holds the cable on the lower plate, removable cover one end is articulated with the lower plate, and the other end passes through bolt detachably with the lower plate and is connected, and removable cover is inside to be equipped with the link, and the link inboard is equipped with a plurality of punch holder, and the punch holder is V-arrangement structure, and punch holder upper portion both ends are articulated with the link, and the opening part of punch holder is equipped with the arc recess that holds the cable, and link upper portion swing joint has first adjusting screw. According to the invention, the upper clamping plate is of an inverted V-shaped structure, when the cable slides in the hardware fitting, the friction force between the cable and the upper clamping plate drives the upper clamping plate to rotate, one side of the upper clamping plate pressurizes the cable downwards, so that the sliding of the cable is avoided, and the connection stability of the cable and the hanging hardware fitting is ensured.
Description
Technical Field
The invention belongs to the technical field of cable erection hardware fittings, and particularly relates to a cable suspension hardware fitting for an overhead transmission line.
Background
Compared with an underground transmission line, the overhead line has the advantages of low construction cost, short construction period and easy maintenance, is a main transmission mode adopted since the development of the power industry, is commonly called an overhead transmission line, connects power stations, substations and load points in different areas through the overhead line, transmits or exchanges electric energy to form a power network or a power distribution network with various voltage levels, and is composed of a pole tower, a wire, an insulator, a line fitting, a stay wire, a pole tower foundation, a grounding device and the like, and is erected on the ground.
There are two general ways of hanging the existing transmission line, one is to use an insulator as a support for the cable and bind the cable to the insulator. The fixing mode has a plurality of defects and shortcomings, firstly, the binding process is complex, higher proficiency is needed, and the operation at high positions is inconvenient; moreover, vibration is generated between the cable and the binding wire in the strong wind area, and the binding wire is easy to loosen, so that the cable slides.
Another way is to fix the cable on the cable bridge by using a line fitting, for example, an electric wire pipeline fixing device disclosed in chinese patent application publication No. CN114094525a, which discloses the following features: the fixing frame comprises a fixing frame body, fixing strips are arranged on the upper portion of the fixing frame body, fixing clamping portions and movable clamping portions are respectively arranged in the middle of the fixing frame body from top to bottom, two groups of arc-shaped bearing portions I are arranged on the lower portion of the fixing clamping portions, arc-shaped bearing portions II are arranged on the upper portion of the movable clamping portions, the arc-shaped bearing portions I and the arc-shaped bearing portions II correspond to each other, locking rods are arranged on the lower portion of the movable clamping portions, and the locking rods penetrate through the lower frame of the fixing frame body. Although the difficulty of cable hanging is reduced, the efficiency of cable hanging is improved, and in a strong wind environment, the cable still can slide when swinging.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a cable suspension fitting for an overhead transmission line, so that the problem that cables slide from the suspension fitting easily due to cable swing in severe environments such as strong wind is solved, and the stability of cable suspension is ensured.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the cable suspension fitting for the overhead transmission line comprises a lower clamping plate and a movable cover plate, wherein a plurality of fixing screws are arranged at the lower part of the lower clamping plate and fixedly arranged on a cable bridge; be equipped with the arc recess that holds the cable on the lower plate, movable cover plate one end is articulated with the lower plate, and the other end passes through bolt detachably with the lower plate and is connected, the inside link that is equipped with of movable cover plate, the link inboard is equipped with a plurality of punch holder, the punch holder is V-arrangement structure, and punch holder upper portion both ends are articulated with the link, the opening part of punch holder is equipped with the arc recess that holds the cable, link upper portion swing joint has first adjusting screw, and first adjusting screw upper end runs through movable cover plate and with movable cover plate threaded connection.
As the further preference of this technical scheme, the arc recess both ends of lower plate and the arc recess department of punch holder all are equipped with the fillet, and the tip of punch holder and lower plate cuts the cable when having avoided the cable swing, arc recess upper portion of lower plate and the arc recess lower part of punch holder all are equipped with anti-skidding rubber pad, have both avoided the cable to skid in hanging the gold utensil, have reduced the wearing and tearing of hanging the gold utensil to the cable when the cable rocked again.
As a further preference of the technical scheme, a plurality of first mounting grooves are formed in the lower clamping plate, a first non-return mechanism is arranged in the first mounting grooves, the first non-return mechanism comprises a supporting frame and a ram arranged in the supporting frame, V-shaped guide grooves are formed in two sides of the supporting frame, arc grooves matched with the arc grooves of the lower clamping plate are formed in the upper portion of the ram, guide rods are arranged at two ends of the ram and slidably arranged in the V-shaped guide grooves, and in an initial state, the guide rods are positioned at the bottoms of the V-shaped guide grooves and protrude out of the arc grooves of the lower clamping plate; because the upper clamping plate and the lower clamping plate clamp the cable, friction force exists between the cable and the ram, when the cable slides between the upper clamping plate and the lower clamping plate, the friction force between the cable and the ram drives the ram to slide leftwards or rightwards in the supporting frame, and the guide rod simultaneously drives the ram to move upwards under the guiding action of the V-shaped guide groove, so that the friction force between the cable and the ram is increased, and the sliding of the cable is avoided.
As a further preference of the technical scheme, a plurality of springs are arranged on two sides of the ram, the other ends of the springs are propped against the inner wall of the supporting frame, and the springs ensure that the ram is positioned at the bottom of the V-shaped guide groove in an initial state, so that the non-return effect of the first non-return mechanism is ensured.
As the further preference of this technical scheme, supporting frame lower part swing joint has the second adjusting screw, the lower extreme of second adjusting screw runs through the lower part that first mounting groove extended to the lower plate, and second adjusting screw and lower plate threaded connection, and the second adjusting screw is convenient for adjust the height of first non-return mechanism, makes ram and cable between form sufficient frictional force, and then guarantees the non-return effect of first non-return mechanism, and is applicable to the cable use of different diameters.
As the further preference of this technical scheme, first non-return mechanism sets up in punch holder open-ended middle part, and when the cable was slided, the ram of first non-return mechanism upwards moved, made the cable form wave structure between punch holder and ram, further guaranteed the non-return effect of cable, guaranteed the stability that the cable hung.
As a further preferable mode of the technical scheme, extension plates are arranged at two ends of the lower clamping plate, a second non-return mechanism is arranged on the extension plates, the second non-return mechanism comprises a first rotary table arranged at one side of the arc-shaped groove of the lower clamping plate and a second rotary table arranged at the other side of the arc-shaped groove of the lower clamping plate, a cable is arranged between the first rotary table and the second rotary table, and in an initial state, the side walls of the first rotary table and the second rotary table are contacted with the cable; the lower parts of the first turntable and the second turntable are respectively provided with an eccentric shaft, the eccentric shafts are arranged on one side close to the cable, and the lower ends of the eccentric shafts are rotationally connected with the extension plates; the cable is provided with a hoop which is in clamping connection with the cable, both sides of the upper part of the hoop are hinged with connecting rods, the other ends of the connecting rods are hinged with the first rotary table or the second rotary table, and the hinge points of the connecting rods are eccentrically arranged with the first rotary table or the second rotary table; when the cable slides in the suspension fitting, the anchor ear is driven to move leftwards or rightwards, and drives the first rotary table and the second rotary table to rotate around the eccentric shaft through the connecting rod.
As a further preferable mode of the technical scheme, a second mounting groove is formed in the extension plate, a sliding block is connected in the second mounting groove in a sliding mode, a bearing is arranged on the sliding block, the lower end of the eccentric shaft is fixedly arranged in an inner ring of the bearing, one side of the sliding block is movably connected with a third adjusting screw rod, and one end of the third adjusting screw rod extends to the outside of the extension plate and is in threaded connection with the extension plate; the sliding block and the third adjusting screw are used for adjusting the distance between the first rotating disc and the second rotating disc, and the device is suitable for cables with different diameters.
As a further preferable mode of the technical scheme, grooves are formed in the side walls of the first rotating disc and the second rotating disc so as to increase the contact area between the first rotating disc and the second rotating disc and the cable, and the first rotating disc and the second rotating disc are arranged in a staggered mode; when the cable slides in the suspension fitting, the first rotary table and the second rotary table rotate in opposite directions, so that the cable forms a wave structure between the first rotary table and the second rotary table, the wave structure formed between the first rotary table and the second rotary table by the cable is mutually perpendicular to the wave structure formed between the upper clamping plate and the ram by the cable, the cable forms a space non-return structure, and the sliding of the cable is avoided as much as possible.
As a further preferable mode of the technical scheme, the connecting rod comprises a double-end stud and connecting sleeves which are connected with two ends of the double-end stud in a threaded mode, wherein the connecting sleeve at one end is hinged with the anchor ear, and the connecting sleeve at the other end is hinged with the first rotary table or the second rotary table; the double-end stud is convenient for adjusting the length of the connecting rod, and the included angle between the connecting rods at two sides is adjusted to be maximum, so that the sensitivity of the second non-return mechanism in non-return is ensured.
The beneficial effects of the invention are as follows:
1) According to the invention, the upper clamping plate is of an inverted V-shaped structure, when the cable slides in the hardware fitting, the friction force between the cable and the upper clamping plate drives the upper clamping plate to rotate, one side of the upper clamping plate pressurizes the cable downwards, so that the sliding of the cable is avoided, and the connection stability of the cable and the hanging hardware fitting is ensured.
2) In order to prevent the cable from being damaged by the hanging hardware fitting, the contact positions of the lower clamping plate and the upper clamping plate and the cable are provided with round corners, and the contact positions of the upper clamping plate and the lower clamping plate and the cable are provided with anti-skid rubber.
3) According to the invention, the plurality of first non-return mechanisms are arranged in the lower clamping plate, the upper clamping plate and the lower clamping plate clamp the cable, friction force exists between the cable and the ram, when the cable slides between the upper clamping plate and the lower clamping plate, the friction force between the cable and the ram drives the ram to slide leftwards or rightwards in the supporting frame, and the guide rod simultaneously drives the ram to move upwards under the guiding action of the V-shaped guide groove, so that the friction force between the cable and the ram is increased, and the sliding of the cable is avoided.
4) In order to ensure the non-return effect of the first non-return mechanism, a plurality of springs are arranged on two sides of the ram, so that the ram is positioned at the bottom of the V-shaped guide groove in an initial state, and the ram can quickly respond to non-return when a cable slides.
5) The second adjusting screw is arranged at the lower part of the supporting frame of the first non-return mechanism and used for adjusting the height of the first non-return mechanism, so that sufficient friction force is formed between the ram and the cable, the non-return effect of the first non-return mechanism is further ensured, and the device is suitable for cables with different diameters.
6) The first non-return mechanism is arranged in the middle of the opening of the upper clamping plate, and when the cable slides, the ram of the first non-return mechanism moves upwards, so that a wave-shaped structure is formed between the upper clamping plate and the ram of the cable, the non-return effect of the cable is further ensured, and the suspension stability of the cable is ensured.
7) The two sides of the lower clamping plate are provided with second non-return mechanisms, when the cable slides in the hanging hardware fitting, the anchor ear drives the anchor ear to move leftwards or rightwards, the anchor ear drives the first rotary disc and the second rotary disc to rotate around the eccentric shaft through the connecting rod, and because the eccentric shaft is eccentrically arranged with the first rotary disc and the second rotary disc, the first rotary disc and the second rotary disc form a cam structure at the moment, and when the first rotary disc and the second rotary disc eccentrically rotate, one end of the first rotary disc and the second rotary disc, which is close to a hinge point of the connecting rod, deflects towards one side of the cable, so that the cable is clamped, and the secondary non-return of the cable hanging is realized.
8) The second mounting groove is formed in the extension plate, the adjustable sliding block is arranged in the second mounting groove, and the second non-return mechanism is mounted on the sliding block so as to adjust the distance between the first rotary disc and the second rotary disc, so that the cable fixing device is suitable for cables with different diameters.
9) The first rotating disc and the second rotating disc are arranged in a staggered manner; when the cable slides in the suspension fitting, the first rotary table and the second rotary table rotate in opposite directions, so that the cable forms a wave structure between the first rotary table and the second rotary table, the wave structure formed between the first rotary table and the second rotary table by the cable is mutually perpendicular to the wave structure formed between the upper clamping plate and the ram by the cable, the cable forms a space non-return structure, and the sliding of the cable is avoided as much as possible.
10 The connecting rods are arranged to be of a length-adjustable structure, and the included angles between the connecting rods at two sides are adjusted to be the maximum in an initial state so as to ensure the sensitivity of the second non-return mechanism in non-return.
Drawings
Fig. 1 is a schematic structural diagram of a cable suspension fitting for an overhead transmission line according to the present invention.
Fig. 2 is a state diagram of the use of the cable suspension fitting for overhead transmission lines according to the present invention.
Fig. 3 is an open state diagram of a movable cover plate of a cable suspension fitting for an overhead transmission line according to the present invention.
Fig. 4 is a schematic structural diagram of a connecting frame in a cable suspension fitting for an overhead transmission line according to the present invention.
Fig. 5 is a schematic diagram of a lower clamping plate in a cable suspension fitting for overhead transmission lines.
Fig. 6 is a cross-sectional view of a lower plate in a cable suspension fitting for an overhead transmission line according to the present invention.
Fig. 7 is a schematic structural diagram of a first non-return mechanism in a cable suspension fitting for an overhead transmission line according to the present invention.
Fig. 8 is a schematic structural diagram of a second non-return mechanism in a cable suspension fitting for an overhead transmission line according to the present invention.
Fig. 9 is a schematic diagram of a slider structure in a cable suspension fitting for an overhead transmission line according to the present invention.
In the figure: 1. a lower clamping plate; 101. a first mounting groove; 102. a second mounting groove; 103. an extension plate; 104. a fixed screw; 2. a removable cover; 201. a connecting frame; 202. an upper clamping plate; 203. a first adjusting screw; 3. a first non-return mechanism; 301. a ram; 302. a support frame; 303. v-shaped guide grooves; 304. a guide rod; 305. a spring; 306. a second adjusting screw; 4. a second non-return mechanism; 401. a first turntable; 402. a connecting rod; 4021. connecting sleeves; 4022. a double-ended stud; 403. an eccentric shaft; 404. a hoop; 405. a second turntable; 406. a slide block; 407. a bearing; 408. a third adjusting screw; 5. a cable; 6. and a cable bridge.
Detailed Description
The following description of the embodiments of the present invention will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, a particular orientation configuration and operation, and thus should not be construed as limiting the present invention.
As shown in fig. 1-4, a cable hanging fitting for overhead transmission lines comprises a lower clamping plate 1 and a movable cover plate 2, wherein a plurality of fixing screws 104 are arranged at the lower part of the lower clamping plate 1, and the fixing screws 104 are fixedly arranged on a cable bridge 6; be equipped with the arc recess that holds cable 5 on the lower plate 1, removable cover 2 one end is articulated with lower plate 1, and the other end passes through bolt detachably with lower plate 1 and is connected, removable cover 2 inside is equipped with link 201, the link 201 inboard is equipped with a plurality of punch holder 202, punch holder 202 is V-arrangement structure, and punch holder 202 upper portion both ends are articulated with link 201, the opening part of punch holder 202 is equipped with the arc recess that holds cable 5, link 201 upper portion swing joint has first adjusting screw 203, and first adjusting screw 203 upper end runs through removable cover 2 and with removable cover 2 threaded connection.
In this embodiment, arc recess both ends and the arc recess department of punch holder 202 of punch holder 1 all are equipped with the fillet, and the tip of punch holder 202 and punch holder 1 cuts cable 5 when having avoided cable 5 to swing, arc recess upper portion of punch holder 1 and the arc recess lower part of punch holder 202 all are equipped with anti-skidding rubber pad, have both avoided cable 5 to skid in hanging the gold utensil, have reduced the wearing and tearing of hanging gold utensil to cable 5 when cable 5 rocks again.
As shown in fig. 5-7, in this embodiment, a plurality of first mounting grooves 101 are formed in the lower plate 1, a first non-return mechanism 3 is disposed in the first mounting grooves 101, the first non-return mechanism 3 includes a support frame 302 and a ram 301 disposed in the support frame 302, V-shaped guide grooves 303 are disposed on two sides of the support frame 302, an arc groove adapted to the arc groove of the lower plate 1 is disposed on the upper portion of the ram 301, guide rods 304 are disposed on two ends of the ram 301, the guide rods 304 are slidably disposed in the V-shaped guide grooves 303, and in an initial state, the guide rods 304 are disposed at the bottom of the V-shaped guide grooves 303, and the ram protrudes out of the arc groove of the lower plate 1; because the upper clamping plate 202 and the lower clamping plate 1 clamp the cable 5, friction exists between the cable 5 and the ram 301, when the cable 5 slides between the upper clamping plate 202 and the lower clamping plate 1, the friction between the cable 5 and the ram 301 drives the ram 301 to slide leftwards or rightwards in the supporting frame 302, and the guide rod 304 simultaneously drives the ram 301 to move upwards under the guiding action of the V-shaped guide groove 303, so that the friction between the cable 5 and the ram 301 is increased, and the sliding of the cable 5 is avoided.
As shown in fig. 7, in this embodiment, a plurality of springs 305 are disposed on both sides of the ram 301, and the other ends of the springs 305 are abutted against the inner wall of the supporting frame 302, so that the springs 305 ensure that the ram 301 is located at the bottom of the V-shaped guide groove 303 in the initial state, thereby ensuring the non-return effect of the first non-return mechanism 3.
As shown in fig. 6, in this embodiment, the lower portion of the supporting frame 302 is movably connected with a second adjusting screw 306, the lower end of the second adjusting screw 306 extends to the lower portion of the lower clamping plate 1 through the first mounting groove 101, and the second adjusting screw 306 is in threaded connection with the lower clamping plate 1, and the second adjusting screw 306 is convenient for adjusting the height of the first non-return mechanism 3, so that sufficient friction force is formed between the ram 301 and the cable 5, further ensuring the non-return effect of the first non-return mechanism 3, and the device is suitable for use with cables 5 with different diameters.
As shown in fig. 3, in this embodiment, the first non-return mechanism 3 is disposed in the middle of the opening of the upper clamping plate 202, and when the cable 5 slides, the ram 301 of the first non-return mechanism 3 moves upward, so that the cable 5 forms a wave structure between the upper clamping plate 202 and the ram 301, further ensuring the non-return effect of the cable 5 and ensuring the suspension stability of the cable 5.
As shown in fig. 1 and 8, in this embodiment, extension plates 103 are disposed at two ends of the lower plate 1, a second non-return mechanism 4 is disposed on the extension plates 103, the second non-return mechanism 4 includes a first rotary table 401 disposed on one side of the arc-shaped groove of the lower plate 1 and a second rotary table 405 disposed on the other side of the arc-shaped groove of the lower plate 1, the cable 5 is disposed between the first rotary table 401 and the second rotary table 405, and in an initial state, sidewalls of the first rotary table 401 and the second rotary table 405 are in contact with the cable 5; the lower parts of the first turntable 401 and the second turntable 405 are respectively provided with an eccentric shaft 403, the eccentric shafts 403 are arranged on one side close to the cable 5, and the lower ends of the eccentric shafts 403 are rotatably connected with the extension plate 103; the cable 5 is provided with a hoop 404 which is in clamping connection with the cable 5, both sides of the upper part of the hoop 404 are hinged with connecting rods 402, the other ends of the connecting rods 402 are hinged with a first rotating disc 401 or a second rotating disc 405, and the hinging points of the connecting rods are eccentrically arranged with the first rotating disc 401 or the second rotating disc 405; when the cable 5 slides in the hanging hardware fitting, the anchor ear 404 is driven to move leftwards or rightwards, the anchor ear 404 drives the first rotary disc 401 and the second rotary disc 405 to rotate around the eccentric shaft 403 through the connecting rod 402, and the eccentric shaft 403 and the first rotary disc 401 and the second rotary disc 405 are eccentrically arranged, so that the first rotary disc 401 and the second rotary disc 405 form a cam structure, and when the first rotary disc 401 and the second rotary disc 405 eccentrically rotate, one end of the first rotary disc 401 and the second rotary disc 405, which is close to a hinge point of the connecting rod 402, deflects towards one side of the cable 5, so that the cable 5 is clamped, and secondary non-return of the hanging of the cable 5 is realized.
As shown in fig. 5 and 9, in this embodiment, the extension plate 103 is provided with a second mounting groove 102, a sliding block 406 is slidably connected in the second mounting groove 102, a bearing 407 is provided on the sliding block 406, the lower end of the eccentric shaft 403 is fixedly installed in the inner ring of the bearing 407, one side of the sliding block 406 is movably connected with a third adjusting screw 408, and one end of the third adjusting screw 408 extends to the outside of the extension plate 103 and is in threaded connection with the extension plate 103; the sliding block 406 and the third adjusting screw 408 are used for adjusting the distance between the first rotating disc 401 and the second rotating disc 405, and are suitable for cables 5 with different diameters.
As shown in fig. 1, in this embodiment, grooves are formed on the side walls of the first turntable 401 and the second turntable 405, so as to increase the contact area between the first turntable 401 and the second turntable 405 and the cable 5, and the first turntable 401 and the second turntable 405 are staggered; when the cable 5 slides in the suspension fitting, the first rotating disc 401 and the second rotating disc 405 rotate in opposite directions, so that the cable 5 forms a wave structure between the first rotating disc 401 and the second rotating disc 405, the wave structure formed between the first rotating disc 401 and the second rotating disc 405 by the cable 5 is perpendicular to the wave structure formed between the upper clamping plate 202 and the ram 301 by the cable 5, the cable 5 forms a space non-return structure, and the sliding of the cable 5 is avoided as much as possible.
As shown in fig. 8, in this embodiment, the connecting rod 402 includes a stud 4022 and connecting sleeves 4021 screwed on two ends of the stud 4022, the connecting sleeve 4021 on one end is hinged with the anchor ear 404, and the connecting sleeve 4021 on the other end is hinged with the first rotating disc 401 or the second rotating disc 405; the stud 4022 facilitates adjusting the length of the connecting rod 402, and adjusts the included angle between the connecting rods 402 at both sides to the maximum, so as to ensure the sensitivity of the second non-return mechanism 4 in non-return.
When the hardware fitting is used, the hardware fitting is fixedly mounted on the cable bridge 6 at the upper end of the electric pole through the fixing screw 104, then the movable cover plate 2 is opened, the cable 5 is placed on the lower clamping plate 1, then the movable cover plate 2 is covered, the first adjusting screw 203 is screwed to enable the upper clamping plate 202 to tightly press the cable 5, and because the upper clamping plate 202 is of an inverted V-shaped structure, the middle part of the upper clamping plate 202 is hinged with the connecting frame 201, when the cable 5 slides in the hardware fitting, the friction force between the cable 5 and the upper clamping plate 202 drives the upper clamping plate 202 to rotate, one side of the upper clamping plate 202 is downwards used for pressing the cable 5, and the sliding of the cable 5 is avoided. When the cable 5 slides in the hardware fitting, friction force between the cable 5 and the ram 301 in the first non-return mechanism 3 drives the ram 301 to slide leftwards or rightwards in the supporting frame 302, the guide rod 304 simultaneously drives the ram 301 to move upwards under the guiding action of the V-shaped guide groove 303, so that friction force between the cable 5 and the ram 301 is increased, and a primary non-return is formed on the cable 5; meanwhile, when the first rotary table 401 and the second rotary table 405 in the second non-return mechanism 4 eccentrically rotate under the drive of the connecting rod 402, one end of the first rotary table 401 and one end of the second rotary table 405, which is close to the hinge point of the connecting rod 402, deflect towards one side of the cable 5, so that the cable 5 is clamped, secondary non-return of the cable 5 suspension is realized, the non-return effect of the cable 5 is enhanced, and the connection stability of the cable 5 and the suspension hardware is ensured.
The foregoing is merely illustrative and explanatory of the invention, as it is well within the scope of the invention as claimed, as it relates to various modifications, additions and substitutions for those skilled in the art, without departing from the inventive concept and without departing from the scope of the invention as defined in the accompanying claims.
Claims (6)
1. The cable suspension fitting for the overhead transmission line comprises a lower clamping plate and a movable cover plate, wherein a plurality of fixing screws are arranged at the lower part of the lower clamping plate and fixedly arranged on a cable bridge; the movable cover plate is characterized in that a connecting frame is arranged inside the movable cover plate, a plurality of upper clamping plates are arranged on the inner side of the connecting frame, the upper clamping plates are of V-shaped structures, two ends of the upper part of the upper clamping plates are hinged with the connecting frame, an arc-shaped groove for accommodating a cable is formed in an opening of the upper clamping plates, a first adjusting screw is movably connected to the upper part of the connecting frame, and the upper end of the first adjusting screw penetrates through the movable cover plate and is in threaded connection with the movable cover plate; the lower clamping plate is internally provided with a plurality of first mounting grooves, a first non-return mechanism is arranged in the first mounting grooves, the first non-return mechanism comprises a supporting frame and a ram arranged in the supporting frame, V-shaped guide grooves are formed in two sides of the supporting frame, arc grooves matched with the arc grooves of the lower clamping plate are formed in the upper part of the ram, guide rods are arranged at two ends of the ram and slidably arranged in the V-shaped guide grooves, and in an initial state, the guide rods are positioned at the bottoms of the V-shaped guide grooves and protrude out of the arc grooves of the lower clamping plate; the first non-return mechanism is arranged in the middle of the opening of the upper clamping plate, and when the cable slides, the ram of the first non-return mechanism moves upwards, so that the cable forms a wave-shaped structure between the upper clamping plate and the ram; the two ends of the lower clamping plate are provided with extension plates, the extension plates are provided with second non-return mechanisms, the second non-return mechanisms comprise a first rotary table arranged on one side of the arc-shaped groove of the lower clamping plate and a second rotary table arranged on the other side of the arc-shaped groove of the lower clamping plate, the cable is arranged between the first rotary table and the second rotary table, and in an initial state, the side walls of the first rotary table and the second rotary table are in contact with the cable; the lower parts of the first turntable and the second turntable are respectively provided with an eccentric shaft, the eccentric shafts are arranged on one side close to the cable, and the lower ends of the eccentric shafts are rotationally connected with the extension plates; the cable is provided with a hoop which is in clamping connection with the cable, both sides of the upper part of the hoop are hinged with connecting rods, the other ends of the connecting rods are hinged with the first rotary table or the second rotary table, and the hinge points of the connecting rods are eccentrically arranged with the first rotary table or the second rotary table; the extension plate is provided with a second mounting groove, a sliding block is connected in the second mounting groove in a sliding manner, a bearing is arranged on the sliding block, the lower end of the eccentric shaft is fixedly arranged in the bearing inner ring, one side of the sliding block is movably connected with a third adjusting screw rod, and one end of the third adjusting screw rod extends to the outside of the extension plate and is in threaded connection with the extension plate.
2. The cable hanging fitting for overhead transmission lines according to claim 1, wherein rounded corners are arranged at both ends of the arc-shaped groove of the lower clamping plate and at the arc-shaped groove of the upper clamping plate, and anti-slip rubber pads are arranged at the upper part of the arc-shaped groove of the lower clamping plate and at the lower part of the arc-shaped groove of the upper clamping plate.
3. The cable suspension fitting for overhead transmission lines according to claim 1, wherein a plurality of springs are provided on both sides of the ram, and the other ends of the springs are abutted against the inner wall of the supporting frame.
4. The cable suspension fitting for overhead transmission lines according to claim 1, wherein a second adjusting screw is movably connected to the lower portion of the supporting frame, the lower end of the second adjusting screw extends to the lower portion of the lower clamping plate through the first mounting groove, and the second adjusting screw is in threaded connection with the lower clamping plate.
5. The cable hanging fitting for overhead transmission lines according to claim 1, wherein grooves are formed in side walls of the first rotary table and the second rotary table, and the first rotary table and the second rotary table are arranged in a staggered manner; when the cable slides in the suspension fitting, the first rotary table and the second rotary table rotate in opposite directions, so that the cable forms a wave structure between the first rotary table and the second rotary table, and the wave structure formed between the first rotary table and the second rotary table by the cable is mutually perpendicular to the wave structure formed between the upper clamping plate and the ram by the cable, so that the cable forms a space non-return structure.
6. The cable suspension fitting for overhead transmission lines according to claim 1, wherein the connecting rod comprises a stud and connecting sleeves screwed to both ends of the stud, the connecting sleeve at one end is hinged with the anchor ear, and the connecting sleeve at the other end is hinged with the first rotary table or the second rotary table.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210237957.2A CN114512949B (en) | 2022-03-10 | 2022-03-10 | Cable suspension fitting for overhead transmission line |
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| CN202210237957.2A CN114512949B (en) | 2022-03-10 | 2022-03-10 | Cable suspension fitting for overhead transmission line |
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| CN114512949A CN114512949A (en) | 2022-05-17 |
| CN114512949B true CN114512949B (en) | 2024-01-16 |
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| CN202210237957.2A Active CN114512949B (en) | 2022-03-10 | 2022-03-10 | Cable suspension fitting for overhead transmission line |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116470461B (en) * | 2023-04-18 | 2023-11-24 | 新昌县新明实业有限公司 | Suspension fitting for carrying out pull-up suspension on power cable through movement and pull-up method |
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| CN114512949A (en) | 2022-05-17 |
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Effective date of registration: 20231211 Address after: No. 602 Taoyuan South Avenue, Pingyuan County Economic Development Zone, Dezhou City, Shandong Province, 253100 Applicant after: Pingyuan power supply company of State Grid Shandong electric power Co. Address before: 253100 No.49 Guangming West Street, Pingyuan County, Dezhou City, Shandong Province Applicant before: Pingyuan power supply company of State Grid Shandong electric power Co. Applicant before: Liu Zhaomeng |
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