CN109510151B - Safety device for high-voltage cable - Google Patents
Safety device for high-voltage cable Download PDFInfo
- Publication number
- CN109510151B CN109510151B CN201811366632.4A CN201811366632A CN109510151B CN 109510151 B CN109510151 B CN 109510151B CN 201811366632 A CN201811366632 A CN 201811366632A CN 109510151 B CN109510151 B CN 109510151B
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- China
- Prior art keywords
- main shaft
- box body
- fixedly connected
- flywheel
- groove
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- 238000004804 winding Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 210000000078 claw Anatomy 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 6
- 239000004020 conductor Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001360 synchronised effect 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
- H02G7/18—Devices affording mechanical protection in the event of breakage of a line or cable, e.g. net for catching broken lines
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- Braking Arrangements (AREA)
Abstract
A safety device for high voltage cables. The utility model relates to high tension cable junction equipment field especially relates to a safety device for preventing cable conductor or weight lump fly off. The safety device for the high-voltage cable has the advantages of exquisite structure, good stability, good braking effect, extremely convenient installation and no false triggering problem. The wire rope winding device comprises a box body, a main shaft, a wire rope, a reset assembly and a brake assembly, wherein the box body is hollow, a rope outlet is formed in one side surface of the box body, a wire rope winding wheel fixedly connected with the main shaft is sleeved on the main shaft, an annular groove for accommodating the wire rope is formed in the middle of the side wall of the wire rope, and one end of the wire rope is fixedly connected to the bottom of the annular groove and a plurality of rings are wound in the annular groove. The invention has the advantages of exquisite structure, good stability, good braking effect, convenient installation, no false triggering and the like.
Description
Technical Field
The invention relates to the field of high-voltage cable connection equipment, in particular to a safety device for preventing a cable wire or a falling lump from flying off.
Background
At present, the high-speed railway overhead line system wire is influenced by the change of the ambient temperature to generate the phenomena of thermal expansion and cold contraction, and in order to avoid the change of the tension of the overhead line system wire, the two ends of the anchor section are respectively provided with an anchor compensating device to compensate the change of the overhead line system wire. A representative patent application of the prior art, namely a two-way brake ratchet compensation device, published in the chinese patent database, is shown in the application number: 201610630275.2, application publication number: CN106183894a. The utility model discloses a two-way braking ratchet compensation arrangement relates to contact net part field, and the device includes: the ratchet wheel body is provided with a first wheel body and a plurality of second wheel bodies, the second wheel bodies are respectively positioned at two sides of the first wheel body, a wire rope is wound on the first wheel body, the end, away from the first wheel body, of the wire rope is a wire rope end, the end, away from the second wheel body, of the wire rope is wound on the second wheel body, and the end, away from the second wheel body, of the wire rope is a compensation end; the first wheel body is provided with first ratchets distributed along the outer circumferential surface of the rim of the first wheel body, and the side surface of the first wheel body, which is close to the rim of the first wheel body, is provided with second ratchets in the circumferential direction; the braking device is connected with the ratchet body and comprises a first braking plate and a second braking plate, and the first braking plate and the second braking plate are respectively arranged on one side of the ratchet body. The first braking plate is provided with a first braking tooth, the first braking tooth is meshed with the first ratchet after the thread end is broken, the second braking plate is provided with a second braking tooth, and the second braking tooth is meshed with the second ratchet after the thread end is compensated.
However, people find after the in-service use that such equipment is very troublesome to install because the cable wire end is connected, the compensation end is connected and is weighed down the lump in the installation, therefore, need to simultaneously pull the cable wire, hang the condition that weighs down the lump, accomplish the connection of two joints simultaneously.
In addition, because the one end of the frame connecting plate is hinged with the side of the upper end of the ratchet braking frame in the scheme, the problem of insufficient support exists when the ratchet braking frame is used normally (namely, a wire rope or a carrier rope is not broken), and even when a wire has a large expansion degree, the problems of false triggering and false blocking occur.
Disclosure of Invention
Aiming at the problems, the invention provides the safety device for the high-voltage cable, which has the advantages of exquisite structure, good stability, good braking effect, extremely convenient installation and no false triggering problem.
The technical scheme of the invention is as follows: the device comprises a box body, a main shaft, a steel wire rope, a reset component and a brake component, wherein the box body is hollow, a rope outlet hole is formed in one side surface of the box body, the main shaft penetrates through the box body and is hinged with the box body, one end of the steel wire rope is fixedly connected with the main shaft, a plurality of rings are wound outside the main shaft, and the other end of the steel wire rope extends out of the box body;
the reset component is connected between the main shaft and the box body and is used for enabling the main shaft to keep a movement trend towards an initial state;
the brake assembly comprises a fixed seat, a flywheel, a plurality of inner ratchets, at least one flying pawl and at least one tension spring, wherein the fixed seat is fixedly connected in the box body and sleeved with the main shaft, a circular groove is formed in the end face of the fixed seat facing the box body, the circular groove is coaxial with the main shaft and is sleeved with the main shaft in an empty mode, and the inner ratchets are uniformly distributed on the side wall of the circular groove and are fixedly connected with the fixed seat; the flywheel is arranged in the circular groove and rotates synchronously with the main shaft, a movable groove is formed in the side wall of the flywheel, the root of the flywheel claw is hinged in the movable groove, and the two ends of the tension spring are respectively and fixedly connected with the middle part of the flywheel claw and the flywheel, so that the flywheel claw keeps a movement trend of rotating towards the center of the flywheel;
the box is connected with the pole, the one end that wire rope stretched out to the box is connected with cable conductor or weight lump.
The reset assembly comprises a reset seat and a plane scroll spring, wherein the reset seat is fixedly connected in the box body and sleeved with the main shaft, a containing groove for containing the plane scroll spring is further formed in the reset seat, the plane scroll spring is arranged in the containing groove and sleeved with the main shaft, and one end of the plane scroll spring is fixedly connected with the main shaft, and the other end of the plane scroll spring is fixedly connected to the inner wall of the containing groove.
The main shaft is sleeved with a rope winding wheel fixedly connected with the main shaft, an annular groove for accommodating a steel wire rope is formed in the middle of the side wall of the rope winding wheel, one end of the steel wire rope is fixedly connected to the bottom of the annular groove, and a plurality of circles of steel wire ropes are wound in the annular groove.
The movable groove is arranged on one side of the flywheel center, which faces the flywheel center, and the tension spring is accommodated in the deep groove, one end of the tension spring is fixedly connected to the bottom of the deep groove, and the other end of the tension spring is fixedly connected to the middle of the flywheel claw.
The flywheel is provided with a main shaft hole, the inner wall of the main shaft hole is provided with a spline groove, a spline matched with the spline groove is fixedly connected to the main shaft, and the spline is accommodated in the spline groove.
When the invention is actually used, the connection of the falling lump and the cable wire can be finished firstly (a pulley block can be arranged between the falling lump and the cable wire); the box body is connected to the electric pole (safety devices with the number corresponding to the cable wire and the weight can be selected according to the number of the cable wire and the weight); and finally, pulling out the steel wire rope from the rope outlet hole, and completing the fixed connection of the steel wire rope with all the falling lumps and all the cables. Therefore, the cable wire is not required to be pulled and the falling lump is suspended when the safety device is installed, the safety device is extremely convenient, the labor intensity is low, the potential safety hazard is small, and the safety device has the advantages of exquisite structure, good stability, good braking effect, extremely convenient installation, no false triggering and the like.
Drawings
Figure 1 is a schematic view of the structure of the present case,
figure 2 is a cross-sectional view taken along A-A of figure 1,
figure 3 is a schematic view of the structure of the brake assembly in the present case,
figure 4 is a cross-sectional view taken along the B-B direction of figure 3,
figure 5 is a reference view of the state of use of the brake assembly of the present case,
figure 6 is a schematic view of the structure of the flywheel in the present case,
figure 7 is a schematic diagram of the reset assembly in this case,
FIG. 8 is a C-C cross-sectional view of FIG. 7;
FIG. 9 is a reference view of the use state of the present case;
in the figure, a box body 1, a main shaft 2, a steel wire rope 3, a cable line 31, a falling lump 32 and an electric pole 33;
4 is a reset component, 41 is a reset seat, and 42 is a plane scroll spring;
5 is a brake component, 51 is a fixed seat, 52 is a flywheel, 521 is a movable groove, 522 is a deep groove, 53 is an inner ratchet, 54 is a flying pawl, and 55 is a tension spring.
Detailed Description
The invention is shown in figures 1-9, and comprises a box body 1, a main shaft 2, a steel wire rope 3, a reset component and a brake component, wherein the box body 1 is hollow, a rope outlet hole is formed in one side surface of the box body, the main shaft 2 penetrates through the box body 1 and is hinged with the box body 1, one end of the steel wire rope 3 is fixedly connected with the main shaft 2, a plurality of circles are wound outside the main shaft 2, and the other end of the steel wire rope 3 extends out of the box body 1;
the reset component 4 is connected between the main shaft 2 and the box body 1 and is used for enabling the main shaft 2 to keep a movement trend towards an initial state;
the brake assembly 5 comprises a fixed seat 51, a flywheel 52, a plurality of inner ratchets 53, at least one flywheel claw 54 and at least a tension spring 55, wherein the fixed seat 51 is fixedly connected in the box body 1 and sleeved with the main shaft 2, a circular groove is formed in the end face of the fixed seat 51 facing the inside of the box body 1, the circular groove is coaxial with the main shaft 2 and is hollow and sleeved with the main shaft 2, and a plurality of inner ratchets 53 are uniformly distributed on the side wall of the circular groove and are fixedly connected with the fixed seat 51; the flywheel 52 is arranged in the circular groove and rotates synchronously with the main shaft 2, a movable groove 521 is formed in the side wall of the flywheel 52, the root of the flywheel claw 54 is hinged in the movable groove 521, and two ends of the tension spring 55 are respectively and fixedly connected with the middle part of the flywheel claw 54 and the flywheel 52, so that the flywheel claw 54 keeps a movement trend of rotating towards the center of the flywheel 52;
the box 1 is connected with an electric pole 33 (or equipment fixed on the ground such as an iron tower), and one end of the steel wire rope 3 extending out of the box 1 is connected with a cable 31 or a dropping lump 32.
In actual use, as shown in fig. 9, the connection between the falling lump and the cable can be completed first (a pulley block can be arranged between the falling lump and the cable); the box body is connected to the electric pole (safety devices with the number corresponding to the cable wire and the weight can be selected according to the number of the cable wire and the weight); and finally, pulling out the steel wire rope from the rope outlet hole, and completing the fixed connection of the steel wire rope with all the falling lumps and all the cables. Therefore, the cable wire is not required to be pulled and the falling lump is suspended when the safety device is installed, the safety device is extremely convenient, the labor intensity is low, the potential safety hazard is small, and the safety device has the advantages of exquisite structure, good stability, good braking effect, extremely convenient installation, no false triggering and the like.
In principle, when the cable and the dropping lump are not disconnected, as shown in fig. 3, the flywheel can freely rotate, so that the safety device is conveniently installed, and meanwhile, the problem of false triggering is solved due to the existence of the tension spring;
and once the connection between the cable and the falling lump is disconnected, the main shaft and the flywheel start to rotate at a high speed under the influence of the cable or the falling lump, so that all the flying pawls overcome the acting force of the tension spring under the action of centrifugal force, swing towards the direction away from the center of the flywheel and finally are clamped into the gaps of the adjacent inner ratchets, and the main shaft is effectively stopped from rotating as shown in fig. 5. Therefore, on one hand, the problem of breaking of the cable due to free falling is avoided, and the cable is effectively protected; on the other hand, the falling lump can be effectively pulled, so that the problem that the falling lump breaks down and devices below the falling lump due to free falling is avoided; the bidirectional protection of the cable line and the falling lump is achieved.
The reset assembly 4 comprises a reset seat 41 and a plane scroll spring 42, the reset seat 41 is fixedly connected in the box body 1 and sleeved with the main shaft 2, a containing groove for containing the plane scroll spring 42 is further formed in the reset seat 41, the plane scroll spring 42 is arranged in the containing groove and sleeved with the main shaft 2, and one end of the plane scroll spring 42 is fixedly connected with the main shaft 2, and the other end of the plane scroll spring 42 is fixedly connected to the inner wall of the containing groove. Thus, when the steel wire rope is pulled by external force to enable the main shaft to rotate, the plane scroll spring is elastically deformed, so that the main shaft keeps a movement trend towards an initial state; and once the external force is released, the main shaft reversely rotates under the influence of the restoring force of the plane spiral spring, and the steel wire rope is retracted. Therefore, the safety device is quite convenient to arrange and install in a time-varying manner, and after the safety device is installed, the steel wire rope is kept in a tensioning state, so that the actual use effect of the follow-up safety device is ensured.
The main shaft 2 is sleeved with a rope winding wheel fixedly connected with the main shaft, an annular groove for accommodating the steel wire rope 3 is formed in the middle of the side wall of the rope winding wheel, one end of the steel wire rope 3 is fixedly connected to the bottom of the annular groove, and a plurality of circles of steel wire ropes are wound in the annular groove. Thereby making the movement of the wire rope more stable.
The side of the movable groove 521, which faces the center of the flywheel 52, is further provided with a deep groove 522, the tension spring 55 is accommodated in the deep groove 522, one end of the tension spring 55 is fixedly connected to the bottom of the deep groove 522, and the other end is fixedly connected to the middle of the flywheel claw 54.
The flywheel is provided with a main shaft hole, the inner wall of the main shaft hole is provided with a spline groove, a spline matched with the spline groove is fixedly connected to the main shaft, and the spline is accommodated in the spline groove. Thereby realizing synchronous rotation of the flywheel and the main shaft.
Claims (3)
1. The safety device for the high-voltage cable is characterized by comprising a box body, a main shaft, a steel wire rope, a reset component and a brake component, wherein the box body is hollow, a rope outlet hole is formed in one side surface of the box body, the main shaft penetrates through the box body and is hinged with the box body, one end of the steel wire rope is fixedly connected with the main shaft, a plurality of rings are wound outside the main shaft, and the other end of the steel wire rope extends out of the box body;
the reset component is connected between the main shaft and the box body and is used for enabling the main shaft to keep a movement trend towards an initial state;
the brake assembly comprises a fixed seat, a flywheel, a plurality of inner ratchets, at least one flying pawl and at least one tension spring, wherein the fixed seat is fixedly connected in the box body and sleeved with the main shaft, a circular groove is formed in the end face of the fixed seat facing the box body, the circular groove is coaxial with the main shaft and is sleeved with the main shaft in an empty mode, and the inner ratchets are uniformly distributed on the side wall of the circular groove and are fixedly connected with the fixed seat; the flywheel is arranged in the circular groove and rotates synchronously with the main shaft, a movable groove is formed in the side wall of the flywheel, the root of the flywheel claw is hinged in the movable groove, and the two ends of the tension spring are respectively and fixedly connected with the middle part of the flywheel claw and the flywheel, so that the flywheel claw keeps a movement trend of rotating towards the center of the flywheel;
the box body is connected with the electric pole, and one end of the steel wire rope extending out of the box body is connected with a cable or a pendant lump;
the reset assembly comprises a reset seat and a plane scroll spring, wherein the reset seat is fixedly connected in the box body and sleeved with the main shaft, a containing groove for containing the plane scroll spring is formed in the reset seat, the plane scroll spring is arranged in the containing groove and sleeved with the main shaft, one end of the plane scroll spring is fixedly connected with the main shaft, and the other end of the plane scroll spring is fixedly connected to the inner wall of the containing groove;
the movable groove is arranged on one side of the flywheel center, which faces the flywheel center, and the tension spring is accommodated in the deep groove, one end of the tension spring is fixedly connected to the bottom of the deep groove, and the other end of the tension spring is fixedly connected to the middle of the flywheel claw.
2. The safety device for the high-voltage cable according to claim 1, wherein the main shaft is sleeved with a rope winding wheel fixedly connected with the main shaft, an annular groove for accommodating a steel wire rope is formed in the middle of the side wall of the rope winding wheel, one end of the steel wire rope is fixedly connected to the bottom of the annular groove, and a plurality of circles of steel wire ropes are wound in the annular groove.
3. The safety device for the high-voltage cable according to claim 1, wherein a spindle hole is formed in the flywheel, a spline groove is formed in the inner wall of the spindle hole, a spline matched with the spline groove is fixedly connected to the spindle, and the spline is accommodated in the spline groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366632.4A CN109510151B (en) | 2018-11-16 | 2018-11-16 | Safety device for high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811366632.4A CN109510151B (en) | 2018-11-16 | 2018-11-16 | Safety device for high-voltage cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109510151A CN109510151A (en) | 2019-03-22 |
| CN109510151B true CN109510151B (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811366632.4A Active CN109510151B (en) | 2018-11-16 | 2018-11-16 | Safety device for high-voltage cable |
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| Country | Link |
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| CN (1) | CN109510151B (en) |
Citations (10)
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|---|---|---|---|---|
| GB2311269A (en) * | 1996-03-18 | 1997-09-24 | Daito Juki Koji Co Ltd | A device for applying tension load to a wire-rope |
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| CN201473138U (en) * | 2009-04-08 | 2010-05-19 | 涂翼民 | Novel positive and negative two-way overspeed protection anti-falling triggering device |
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| WO2017156958A1 (en) * | 2016-03-16 | 2017-09-21 | 青岛歌尔声学科技有限公司 | Wire winding module |
| CN108608893A (en) * | 2018-06-13 | 2018-10-02 | 扬州市东方吊架有限公司 | It is a kind of can bi-directional braking compensation device and its installation method |
| CN209169908U (en) * | 2018-11-16 | 2019-07-26 | 扬州东方吊架有限公司 | Safety for high-voltage cable |
-
2018
- 2018-11-16 CN CN201811366632.4A patent/CN109510151B/en active Active
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|---|---|---|---|---|
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| CN109510151A (en) | 2019-03-22 |
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