CN116845800A - Portable electric tension clamp - Google Patents
Portable electric tension clamp Download PDFInfo
- Publication number
- CN116845800A CN116845800A CN202311119455.0A CN202311119455A CN116845800A CN 116845800 A CN116845800 A CN 116845800A CN 202311119455 A CN202311119455 A CN 202311119455A CN 116845800 A CN116845800 A CN 116845800A
- Authority
- CN
- China
- Prior art keywords
- worm wheel
- split
- rod
- preformed armor
- winding rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004804 winding Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 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
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 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
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
-
- 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
- H02G7/053—Suspension clamps and clips for electric overhead lines not suspended to a supporting wire
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention belongs to the technical field of electric power fittings, and particularly relates to a portable electric power strain clamp which comprises a preformed armor rod, wherein split worm gears are respectively fixed at two ends of the preformed armor rod, the two split worm gears can be buckled to form a worm gear, a bracket is arranged on the outer side of the split worm gear, a rotatable winding rod is arranged on the bracket, the axial direction of the winding rod is perpendicular to the axial direction of the worm gear, the winding rod comprises a rod body, a wire groove and a threaded part, the wire groove is positioned on the rod body, the threaded part is meshed with the split worm gear, when the electric power strain clamp is used, a cable is wound in the wire groove and is in friction fit, and when the tension of the cable is increased, the winding rod is rotated to drive the worm gear to rotate, so that the preformed armor rod clamps the cable. According to the invention, the tension of a part of cables is converted into the clamping force on the preformed armor rods, so that the cables are prevented from being broken due to overlarge tension, the clamping force requirement on the cables is met, and the loosening of the wire clamps is avoided. In addition, adopt split structure, be convenient for the installation and the dismantlement of fastener, be fit for used repeatedly.
Description
Technical Field
The invention belongs to the technical field of electric power fittings, and particularly relates to a portable electric power strain clamp.
Background
Strain clamps are an electrical device for securing and connecting cables, typically made of metal, with strong load-bearing and corrosion resistance. The strain clamp is used for keeping the tension of the cable in the electric power transmission and distribution line, so as to ensure the safe operation of the line.
The preformed armor clamp comprises preformed armor rods and a connecting device connected in the middle of the preformed armor rods, wherein when the preformed armor rods are used, two ends of the preformed armor rods are alternately wound on an overhead cable and then integrally fixed on structures such as a tower clamp through the connecting device. The cable has a certain tension requirement and also requires a certain clamping force of the pre-twisted wire to the cable. However, the existing preformed strain clamp has the following problems: if the tension and clamping force are both too great, it may happen that the cable is pulled apart. The wire clamp is easy to loosen during use with a small clamping force. The strain clamp can not be disassembled after being installed, otherwise, the mechanical property of the strain clamp can be reduced by re-use, and the requirement of circuit design is difficult to reach.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a portable electric tension clamp which meets the requirements of clamping force and tension.
The above purpose is achieved by the following technical scheme:
the utility model provides a portable electric power strain clamp, includes the preformed armor rod, the both ends of preformed armor rod are fixed with split worm wheel respectively, and two split worm wheels can lock and form the worm wheel, and the outside of split worm wheel is equipped with the support, installs rotatable wire winding pole on the support, and the axial of wire winding pole is perpendicular with the axial of worm wheel, and wire winding pole includes the body of rod and is located wire casing and screw thread portion on the body of rod, screw thread portion and split worm wheel meshing, during the use, cable wire winding groove and friction fit, and when cable tension increased, wire winding pole rotated, drive worm wheel rotates, makes the tight cable of preformed armor rod clamp.
Preferably, the support is provided with a sliding groove, the rod body of the winding rod is matched with the sliding groove in a guiding manner, the length direction of the sliding groove is parallel to the axial direction of the worm wheel, and when the winding rod moves to the end part of the sliding groove, the threaded part is disengaged from the split worm wheel.
Preferably, the base circle diameter of the wire groove is smaller than the base circle diameter of the threaded portion.
Preferably, a unidirectional rotation mechanism is arranged between the bracket and the worm wheel.
Preferably, the unidirectional rotation mechanism comprises a ratchet fixed on the split worm wheel and a pawl fixed on the bracket.
Preferably, the bracket is formed by buckling two split shells, and the split shells comprise a cylindrical shell for accommodating the split worm wheel and an ear plate for buckling connection.
Preferably, the buckling surface of the split worm wheel is provided with a bump and a groove, and the two split worm wheels are centrally symmetrical with respect to the central axis of the worm wheel after being buckled.
Preferably, the preformed armor rods are of U-shaped structures, and the connecting device is connected to the middle position of each preformed armor rod.
The invention has the beneficial effects that: according to the portable electric tension-resistant wire clamp, the worm and gear mechanism between the winding rod and the preformed armor rod converts the tension of a part of wires into the clamping force for the preformed armor rod wires, so that the wires are prevented from being broken due to overlarge tension, the clamping force requirement for the wires is met, and the wire clamp is prevented from loosening. In addition, adopt split structure, be convenient for the installation and the dismantlement of fastener, be fit for used repeatedly.
Further, through setting up the spout, the wire winding pole removes along the spout when the pivoted, when removing the tip, worm gear mechanism unmeshes for tension conversion gives the clamping force of fastener limited, avoids the clamping force too big to lead to the crushing cable.
Drawings
Fig. 1 is a schematic overall structure of a first embodiment of a portable electric strain clamp of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 with a separate housing removed;
FIG. 3 is a schematic view of the structure of a preformed armor rod;
FIG. 4 is a cross-sectional view of A-A of FIG. 3;
FIG. 5 is a cross-sectional view of B-B of FIG. 3;
FIG. 6 is a schematic view of a winding rod;
FIG. 7 is a schematic view of the structure of the split housing;
fig. 8 is a schematic winding diagram of a portable electrical strain clamp of the present invention;
wherein: 100. a bracket; 101. a split housing; 102. ear plates; 103. a connecting bolt; 104. a pawl; 105. a chute;
200. pre-twisting the wire; 201. a split worm wheel; 202. a ratchet;
300. a winding rod; 301. a wire slot; 302. a thread;
400. and a connecting device.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be a direct contact between the first feature and the second feature, or an indirect contact between the first feature and the second feature through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The embodiment I of the portable electric strain clamp comprises:
as shown in fig. 1 to 8, the portable electric strain clamp includes a bracket 100, a preformed armor rod 200, a winding rod 300, and a connecting device 400.
The preformed armor rods 200 comprise spiral preformed armor rods, the left and right end portions of the preformed armor rods 200 are respectively fixed with a split worm wheel 201, and the left and right split worm wheels 201 can be buckled to form a complete worm wheel. The split worm wheel 201 is fixed with a ratchet 202, and the ratchet 202 protrudes outwards from the outer peripheral surface of the worm wheel.
The outside of the split worm wheel 201 is provided with a bracket 100, the bracket 100 is formed by buckling two split shells 101, and the split shells 101 comprise a cylindrical shell for accommodating the split worm wheel 201 and an ear plate 102 for buckling connection. There is a space between the cylindrical shell and the split worm wheel 201, a pawl 104 is fixed on the inner wall of the cylindrical shell, and the pawl 104 and the ratchet 202 cooperate to form a unidirectional rotation mechanism. The split shell 101 is provided with a sliding groove 105, two ends of the sliding groove 105 are closed, the length direction of the sliding groove 105 is parallel to the axis direction of the worm wheel, and the axial length corresponding to the meshing section on the worm wheel is smaller than the length of the sliding groove 105.
The winding rod 300 comprises a rod body, a wire groove 301 and a thread part 302 are fixed on the rod body, the wire groove 301 is annular, the thread part 302 is meshed with the split worm wheel 201, and the winding rod 300 and the worm wheel form a worm and gear mechanism. The rod body is guided and installed in the chute 105, and the width of the chute 105 is smaller than the outer diameters of the wire groove 301 and the threaded portion 302. The axial direction space of the winding rod 300 is perpendicular to the axial direction of the worm wheel. The base circle diameter of the wire groove 301 is smaller than that of the thread part 302, and the helix angle of the worm teeth on the worm wheel is close to a right angle, so that the thread part 302 can do compound movement of axial movement and rotation relative to the worm wheel.
In this embodiment, two separate housings 101 are fixed by connecting bolts 103 passing through the ear plates 102.
The two split worm gears 201 have the same structure, the buckling surfaces of the two split worm gears 201 are provided with convex blocks and grooves, the convex-concave structures of the convex blocks and the grooves are adopted for buckling, and the two split worm gears 201 are symmetrical about the central axis center of the worm gear after buckling.
The preformed armor rods 200 are of a U-shaped structure, the middle positions of the preformed armor rods 200 are connected with the connecting devices 400 through bolts, and the connecting devices 400 are U-shaped connecting rings. The prefabricated silk pieces on the left side and the right side are alternately wound on the cable during winding. The specific winding manner of the preformed armor rods 200 is known in the art, and will not be described herein.
The working process comprises the following steps:
the preformed armor rods 200 are wound on the cable, and after tightening, the two split worm gears 201 are combined to form a complete worm gear, and when the worm gear rotates in the forward direction, the clamping force of the preformed armor rods on the preformed armor rods 200 on the cable is increased. Then, as shown in fig. 8, the wire is wound around the warp groove 301 from the end where the connection device 400 is located, and after the wire is assembled, the worm wheel connected to the pre-twisted wire 200 is engaged with the screw portion 302 of the winding rod 300. The two split cases 101 are preliminarily connected and fixed by a concave-convex structure, and then fixed by a connecting bolt 103 passing through the ear plate 102.
During use, as the tension of the cable increases, the winding rod 300 is driven to rotate and move along the chute 105 by the friction force between the cable and the wire groove 301, and as the threaded portion 302 on the winding rod 300 and the worm wheel on the preformed armor rod 200 are in a meshed state, the worm wheel on the preformed armor rod 200 also rotates and clamps the cable as the winding rod 300 rotates. Due to the unidirectional rotation mechanism, the worm wheel can only rotate forward, and the pre-twisted wire 200 cannot be unloaded after being clamped. When the winding rod 300 moves to the end limit position along the chute 105, the threaded portion 302 loses engagement with the split worm wheel 201, so that the winding rod 300 and the preformed armor rod 200 are separated, the clamping force of the cable reaches the limit, and the cable cannot be clamped continuously along with the pulling force.
In other embodiments of the portable electrical strain clamp of the present invention, the chute 105 on the bracket 100 may be omitted, such that the winding rod 300 is directly rotatably mounted on the bracket 100 without movement, regardless of the clamping force limitation.
In other embodiments of the portable electrical strain clamp of the present invention, when cable tension is always present and the worm and gear mechanism has a self-locking function, the unidirectional rotation mechanism may be omitted.
In other embodiments of the portable electrical strain clamp of the present invention, the bracket 100 may be an integrally configured housing, where an opening is provided on the housing, and the housing has elasticity; the stand 100 may also employ a hinged, separate housing 101.
It should be noted that, for a person skilled in the art, it is possible to make several variations and modifications without departing from the spirit of the present invention, as long as there are no contradictions between the combinations of these technical features, which should be considered as the scope of the present description. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a portable electric power strain clamp, includes preformed armor rods, its characterized in that: the two ends of the preformed armor rods are respectively fixed with a split worm wheel, the two split worm wheels can be buckled to form a worm wheel, the outer side of the split worm wheel is provided with a bracket, a rotatable winding rod is arranged on the bracket, the axial direction of the winding rod is vertical to the axial direction of the worm wheel, the winding rod comprises a rod body, a wire groove and a threaded part, wherein the wire groove is positioned on the rod body, the threaded part is meshed with the split worm wheel, when the winding rod is used, a cable is wound around the wire groove and in friction fit, and when the cable tension is increased, the winding rod rotates to drive the worm wheel to rotate, so that the preformed armor rod clamps the cable.
2. The portable electrical strain clamp of claim 1, wherein: the support is provided with a sliding groove, the rod body of the winding rod is matched with the sliding groove in a guiding manner, the length direction of the sliding groove is parallel to the axial direction of the worm wheel, and when the winding rod moves to the end part of the sliding groove, the threaded part is disengaged from the split worm wheel.
3. The portable electrical strain clamp of claim 2, wherein: the base circle diameter of the wire groove is smaller than that of the threaded part.
4. The portable electrical strain clamp of claim 1, wherein: a unidirectional rotating mechanism is arranged between the bracket and the worm wheel.
5. The portable electrical tension clamp of claim 4, wherein: the unidirectional rotation mechanism comprises a ratchet fixed on the split worm wheel and a pawl fixed on the bracket.
6. The portable electrical power strain clamp of any of claims 1 to 5, wherein: the bracket is formed by buckling two split shells.
7. The portable electrical tension clamp of claim 6, wherein: the split body housing comprises a cylindrical housing for accommodating the split worm wheel and an ear plate for butt-buckling connection.
8. The portable electrical strain clamp of claim 1, wherein: the buckling surface of the split worm wheel is provided with a bump and a groove, and the two split worm wheels are centrally symmetrical with respect to the central axis of the worm wheel after being buckled.
9. The portable electrical strain clamp of claim 1, wherein: the preformed armor rods are of U-shaped structures.
10. The portable electrical tension clamp of claims 1 or 9, wherein: and a connecting device is connected to the middle position of the preformed armor rods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311119455.0A CN116845800B (en) | 2023-09-01 | 2023-09-01 | Portable electric tension clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311119455.0A CN116845800B (en) | 2023-09-01 | 2023-09-01 | Portable electric tension clamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116845800A true CN116845800A (en) | 2023-10-03 |
| CN116845800B CN116845800B (en) | 2023-11-07 |
Family
ID=88162091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311119455.0A Active CN116845800B (en) | 2023-09-01 | 2023-09-01 | Portable electric tension clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116845800B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7008098A (en) * | 1997-06-13 | 1998-12-17 | Pirelli General Plc | Aerial cable and tension clamp assembly |
| JP2004072889A (en) * | 2002-08-06 | 2004-03-04 | Hitachi Cable Ltd | Transmission line winding apparatus and transmission line winding method using same |
| US20050218269A1 (en) * | 2004-04-01 | 2005-10-06 | Senior Industries, Inc. | Clamp |
| CN202978157U (en) * | 2012-10-08 | 2013-06-05 | 江苏天南电力器材有限公司 | Pre-twisted strain clamp |
| CN208874230U (en) * | 2018-09-30 | 2019-05-17 | 江苏畅源电气设备有限公司 | Adjustable pre-twisted tenses wire clamp |
| CN112202110A (en) * | 2020-09-29 | 2021-01-08 | 李德元 | Self-walking preformed armor rod winding device for electric power overhaul, installation equipment and operation method |
| CN213521202U (en) * | 2020-09-19 | 2021-06-22 | 河北顺和电力器材制造有限公司 | Can install powerful strain clamp group fast |
| CN213753947U (en) * | 2020-11-04 | 2021-07-20 | 昆明瑞熙达科技有限公司 | Lightning-arrest area support |
| CN215934412U (en) * | 2021-10-08 | 2022-03-01 | 九州同创(山东)电力科技有限公司 | Pre-twisted strain clamp |
| CN114188883A (en) * | 2021-12-06 | 2022-03-15 | 广西电网有限责任公司玉林供电局 | Auxiliary device and method for replacing aluminum-sandwiched stranded wires of suspension lines of power transmission lines |
| CN115189279A (en) * | 2022-09-13 | 2022-10-14 | 合肥工业大学 | Quick wind of transmission line wire preformed armor rod strip |
-
2023
- 2023-09-01 CN CN202311119455.0A patent/CN116845800B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU7008098A (en) * | 1997-06-13 | 1998-12-17 | Pirelli General Plc | Aerial cable and tension clamp assembly |
| JP2004072889A (en) * | 2002-08-06 | 2004-03-04 | Hitachi Cable Ltd | Transmission line winding apparatus and transmission line winding method using same |
| US20050218269A1 (en) * | 2004-04-01 | 2005-10-06 | Senior Industries, Inc. | Clamp |
| CN202978157U (en) * | 2012-10-08 | 2013-06-05 | 江苏天南电力器材有限公司 | Pre-twisted strain clamp |
| CN208874230U (en) * | 2018-09-30 | 2019-05-17 | 江苏畅源电气设备有限公司 | Adjustable pre-twisted tenses wire clamp |
| CN213521202U (en) * | 2020-09-19 | 2021-06-22 | 河北顺和电力器材制造有限公司 | Can install powerful strain clamp group fast |
| CN112202110A (en) * | 2020-09-29 | 2021-01-08 | 李德元 | Self-walking preformed armor rod winding device for electric power overhaul, installation equipment and operation method |
| CN213753947U (en) * | 2020-11-04 | 2021-07-20 | 昆明瑞熙达科技有限公司 | Lightning-arrest area support |
| CN215934412U (en) * | 2021-10-08 | 2022-03-01 | 九州同创(山东)电力科技有限公司 | Pre-twisted strain clamp |
| CN114188883A (en) * | 2021-12-06 | 2022-03-15 | 广西电网有限责任公司玉林供电局 | Auxiliary device and method for replacing aluminum-sandwiched stranded wires of suspension lines of power transmission lines |
| CN115189279A (en) * | 2022-09-13 | 2022-10-14 | 合肥工业大学 | Quick wind of transmission line wire preformed armor rod strip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116845800B (en) | 2023-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116845800B (en) | Portable electric tension clamp | |
| CN212577379U (en) | Straightening device for steel-cored aluminum strand | |
| CN205355744U (en) | Street sign indicating number with adjustable | |
| CN210505343U (en) | Winch trailer with follow-up fixed point rope guide device | |
| WO2024012079A1 (en) | Hook assembly, and flushing unit of pull-cord-type toilet | |
| CN111824856A (en) | Ratchet type double-locking structure for assisting steel wire rope traction in high-altitude cable | |
| CN207542679U (en) | A kind of power transmission and transformation line Multifunctional tightener | |
| CN215934412U (en) | Pre-twisted strain clamp | |
| CN209994067U (en) | Adjustable and connect inseparable resistant fastener device for electric power engineering | |
| CN216929432U (en) | Threading construction device for building electrical engineering | |
| CN219610952U (en) | Copper covered steel round wire winding and unwinding devices | |
| CN213052535U (en) | Cutting device is used in rubber-insulated-wire cable production | |
| CN218334649U (en) | Cable clamping device of outgoing line box | |
| CN117691432B (en) | Distribution line broken wire quick-connection device | |
| CN216034897U (en) | Drag-line brake assembly | |
| CN217589984U (en) | Telescopic electrified foreign matter cleaning device | |
| CN216121086U (en) | Opposite-insertion type copper-aluminum connector | |
| CN216215594U (en) | Electronic wire harness for backpack type elevator | |
| CN213937290U (en) | Polyethylene cable protection pipe | |
| CN213141037U (en) | Fill cable roll-up device for electric pile | |
| CN214942986U (en) | Novel goaf tower stay wire regulator | |
| CN216958528U (en) | Wire connecting device | |
| CN220684261U (en) | Paying-off reel with auxiliary limiting structure | |
| CN218897068U (en) | Wire connector sealing mechanism with improved structure | |
| CN215973040U (en) | Rope tightening device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |