CN210326886U - Special clamp and clamp group for snakelike laying of large-section cable - Google Patents
Special clamp and clamp group for snakelike laying of large-section cable Download PDFInfo
- Publication number
- CN210326886U CN210326886U CN201921385163.0U CN201921385163U CN210326886U CN 210326886 U CN210326886 U CN 210326886U CN 201921385163 U CN201921385163 U CN 201921385163U CN 210326886 U CN210326886 U CN 210326886U
- Authority
- CN
- China
- Prior art keywords
- clamp
- cable
- connecting plate
- laying
- cylinder
- 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.)
- Expired - Fee Related
Links
- 210000005069 ears Anatomy 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000000930 thermomechanical effect Effects 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model discloses a special clamp and a clamp group for snakelike laying of large-section cables, wherein the clamp comprises a clamp body, a swivel mount, a slide block and a guide rail; the clamp body comprises a connecting plate, a lower clamp body, an upper clamp body and a connecting bolt, the upper clamp body and the lower clamp body are folded to form a cylinder for clamping a cable, and two ends of the cylinder are provided with bell mouths; the connecting plate is rotatably connected with the rotary seat, the rotary seat is fixedly connected with the sliding block, and the sliding block and the guide rail form a sliding pair. When the clamp is used for clamping a cable, the structure of the horn mouth at the end part of the clamp is more matched with the curvature of the cable during snake-shaped laying, the mechanical damage of the port of the clamp to the cable is reduced, and the service life of the cable is prolonged; and through setting up the swivel mount, realized the quick adjustment of anchor clamps position and angle for the torsional stress that the cable produced in laying process, the thermomechanical force that produces in the operation process can release, has promoted cable operational reliability. The use of the clamp group improves the laying efficiency of the cable.
Description
Technical Field
The utility model relates to a cable laying technical field, concretely relates to big cross-section cable snakelike special fixture and anchor clamps group of laying.
Background
With the increasing demand for electricity and the shortage of underground cable channel resources, long-distance, large-section and high-voltage-grade cables are widely applied. For the transmission cable line, because the laying distance is long, the ground condition of the passing area of the line is complex, the line passes through important traffic roads, rivers, railways, dense pedestrian flow areas and the like, the adoption of a road surface excavation mode is extremely difficult, and most of the transmission cable lines are laid at 10-30 meters below the ground in a shield tunnel mode.
When the load current of the line or the ambient temperature changes in the operation process of the power cable, the conductor wire core and the insulating layer of the cableThe materials can expand with heat and contract with cold, thereby causing the generation of thermo-mechanical force in the cable. The thermal mechanical force causes displacement between the conductor and the insulating layer, fatigue damage of the metal protective layer and the like, and the safe and stable operation of the power cable is seriously influenced. According to the test, the cross section area of the conductor is 2000mm2The thermal mechanical strength of the power cable can reach about 100 kN. Therefore, for the power cable with high voltage grade and large section, the reduction of the thermo-mechanical force generation has great significance for the safe operation of the cable. In order to reduce the generation of the thermo-mechanical force of the cable, the cable clamp is generally used for performing serpentine laying on the cable, and the serpentine laying can effectively absorb the length change of the cable line caused by expansion and contraction of heat and reduce the generation of the thermo-mechanical force in the cable.
When the conventional cable clamp is adopted for snakelike laying of the power cable, the cables at two end points of the fixing clamp are often subjected to overlarge clamping force, so that the pressure born by the cables exceeds the ultimate strength of the cables, the cables deform, and mechanical damage to a certain degree is generated. Moreover, the angle of the existing cable clamp cannot be adjusted, and the torsional stress generated in the laying process of the cable cannot be released, so that the cable is damaged. In addition, the existing cable clamp can only be used singly, and the laying efficiency is low.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that when using current cable clamp to carry out snakelike laying of cable, the anchor clamps easily cause mechanical damage to the cable, the utility model aims at providing a snakelike special fixture that lays of large cross-section cable.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a special clamp for snakelike laying of a large-section cable comprises a clamp body, a rotary seat, a sliding block and a guide rail; the clamp body comprises a connecting plate, a lower clamp body, an upper clamp body and a connecting bolt, the lower clamp body comprises a clamp seat and a lower hoop, the lower hoop is welded on the clamp seat, the upper clamp body comprises an upper hoop, and two ends of the upper hoop are provided with lugs; the upper hoop comprises an upper arc-shaped plate, the lower hoop comprises a lower arc-shaped plate, the upper arc-shaped plate and the lower arc-shaped plate are folded to form a cylinder, the inner diameter of the cylinder is matched with the diameter of the outer circle of the cable, and two ends of the cylinder are outwards opened to form a horn mouth; the upper and lower anchor ears are held together by connecting bolts which sequentially pass through the ear parts of the upper clamp body, the clamp holder and the connecting plate, the cable is clamped between the arc plates of the upper and lower anchor ears, the connecting plate is rotatably connected with the rotary seat, the rotary seat is fixedly connected with the slide block, and the slide block and the guide rail form a sliding pair.
Further, the swivel mount includes swivel mount body, pivot and bearing, and the bearing is installed at swivel mount body internally, and the pivot lower extreme is connected with bearing inner race interference fit, pivot upper end and connecting plate fixed connection.
Further, the opening angle of the horn mouth is 5-15 degrees; the length of the straight cylinder section of the cylinder is 12-18 cm.
Furthermore, a positioning screw is arranged on the sliding block and used for limiting the position of the sliding block on the guide rail.
Furthermore, the connecting plate is provided with a limiting groove, and the limiting groove is used for limiting the rotation of the connecting plate.
For solving the technical problem that the laying cable using the existing cable clamp is low in efficiency, the utility model aims to provide a snakelike special clamp group that lays of large cross-section cable.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a special clamp group for snakelike laying of large-section cables comprises a guide rail and a plurality of clamp bodies which are arranged on the guide rail in a sliding mode through a sliding block, wherein the clamp bodies are connected with the sliding block through a rotating seat and comprise a connecting plate, a lower clamp body, an upper clamp body and a connecting bolt; the upper hoop comprises an upper arc-shaped plate, the lower hoop comprises a lower arc-shaped plate, the upper arc-shaped plate and the lower arc-shaped plate are folded to form a cylinder, the inner diameter of the cylinder is matched with the diameter of the outer circle of the cable, and two ends of the cylinder are outwards opened to form a horn mouth; the upper and lower anchor ears are held together by connecting bolts which sequentially pass through the ear parts of the upper clamp body, the clamp holder and the connecting plate, the cable is clamped between the arc plates of the upper and lower anchor ears, the connecting plate is rotatably connected with the rotary seat, the rotary seat is fixedly connected with the sliding block, and the sliding block and the guide rail form a sliding pair.
Further, the swivel mount includes swivel mount body, pivot and bearing, and the bearing is installed at swivel mount body internally, and the pivot lower extreme is connected with bearing inner race interference fit, pivot upper end and connecting plate fixed connection.
Further, the opening angle of the horn mouth is 5-15 degrees; the length of the straight cylinder section of the cylinder is 12-18 cm.
Furthermore, a positioning screw is arranged on the sliding block and used for limiting the position of the sliding block on the guide rail;
furthermore, the connecting plate is provided with a limiting groove, and the limiting groove is used for limiting the rotation of the connecting plate.
The utility model has the advantages that:
the utility model discloses a snakelike special fixture that lays of big cross-section cable through changing anchor clamps both ends mouth into "horn mouth", has reduced the too big clamp force that cable received at anchor clamps both ends department, and the setting of horn mouth adapts to the deformation of cable bending part, reduces the production of bending stress, has reduced the mechanical damage of cable, has prolonged the life of cable, and the reliability of safe operation is high; through setting up the swivel mount, realized the quick adjustment of anchor clamps position and angle, the torsional stress that the cable produced at laying process can release, and the mechanical damage of cable when having effectively reduced snakelike laying has prolonged the life of cable and the reliability of safe operation.
Through using the utility model discloses a snakelike special fixture group that lays of large cross-section cable can realize laying when many cables, lays efficiently.
Drawings
Fig. 1 is a schematic structural view showing embodiment 1 of the special fixture for snakelike laying of cables according to the present invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural diagram showing the connecting plate of the special fixture for snakelike laying of cables of the utility model.
Fig. 4 is a schematic structural diagram of the special fixture set for snakelike laying of cables of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.
Example 1
Referring to fig. 1 to 3, the utility model provides a special clamp for snakelike laying of large-section cables, which comprises a clamp body 10, a rotary seat 20, a slide block 30 and a guide rail 40; the clamp 10 comprises a connecting plate 14, a lower clamp 12, an upper clamp 11 and a connecting bolt 13, wherein the lower clamp 12 comprises a clamp seat 122 and a lower hoop, the lower hoop is welded on the clamp seat 122, the upper clamp 11 comprises an upper hoop, and two ends of the upper hoop are provided with lugs 112; the upper hoop comprises an upper arc-shaped plate 111, the lower hoop comprises a lower arc-shaped plate 121, the upper arc-shaped plate and the lower arc-shaped plate are folded to form a cylinder, the inner diameter of the cylinder is matched with the diameter of the outer circle of the cable, and two ends of the cylinder are outwards opened to form a horn mouth 113; the upper and lower hoops are clasped together by a connecting bolt 13 which sequentially passes through the upper clamp body ear 112, the clamp holder 122 and the connecting plate 14, the cable is clamped between the upper arc-shaped plate 111 and the lower arc-shaped plate 121, the connecting plate 14 is rotatably connected with the rotary seat 20, the rotary seat 20 is fixedly connected with the sliding block 30, and the sliding block 30 and the guide rail 40 form a sliding pair.
In this embodiment, the length L of the straight section of the cylinder formed by the closed upper and lower arc plates is 150cm, and the opening angle of the bell mouth 113 is 15 °. The contact area between the cable and the clamp is increased by lengthening the length of the straight cylinder section, so that the clamping strength of the clamp on the cable is reduced, and the mechanical damage of the clamp on the cable is reduced. The 15-degree opening angle can well meet the snake-shaped laying requirement of the cable.
In this embodiment, the rotating base 20 includes a rotating base body 21, a rotating shaft 22 and a bearing 23, the rotating base body 21 is a rectangular mounting block, a rotating shaft mounting hole is formed in a central portion of an upper end of the rotating base body, the bearing 23 is mounted in the shaft seat mounting hole, an outer ring of the bearing is connected with the rotating shaft mounting hole in an interference fit manner, a lower end of the rotating shaft 22 is inserted into an inner ring of the bearing and connected with the inner ring of the bearing in an interference fit manner, and an upper end of the rotating shaft 22 is fixedly connected. The outer side of the rotating shaft mounting hole is provided with a bolt connecting hole, the upper end of the sliding block 30 is provided with a thread counter bore which is in one-to-one correspondence with the bolt connecting hole, and the rotating seat is fixedly connected with the sliding block through the bolt connecting hole penetrating through the rotating seat body and a bolt 24 of the thread counter bore of the sliding block.
In order to protect the bearing 23, a bearing cover may be provided on the outer side of the bearing, and an annular protrusion for limiting axial play of the bearing outer ring may be provided on the inner side surface of the bearing cover, and the bearing cover may be fixed to the swivel base body by a screw.
Referring again to FIG. 3, FIG. 3 is a top view of one embodiment of web 14. In the present embodiment, the connection plate 14 is a rectangular flat plate, and two screw through holes 141 penetrating the plate thickness are provided at both left and right ends, and the screw through holes 141 are screwed with the connection bolts 13. The front end and the rear end of the connecting plate 14 are provided with four arc grooves 142 penetrating the plate thickness, and the two arc grooves at opposite angles form a pair of limiting grooves for limiting the rotation of the connecting plate. When the connecting plate is limited to rotate, namely the limiting clamp body rotates, the bolts 24 are only required to be replaced by long bolts, and the upper ends of the front bolt 24 and the rear bolt 24 are respectively clamped into a pair of limiting grooves.
In the embodiment, the ear portion 112 can be integrally connected to the arc plate 111 by welding. The hole of the ear portion 112 for passing the connecting bolt 13 is a through hole, in this embodiment, a screw through hole. The holes of the clamping base 122 for penetrating the connecting bolts 13 are smooth through holes, and the inner diameter of the holes is slightly larger than the outer diameter of the connecting bolts 13.
Both the slide block and the guide rail are in the prior art, and in the embodiment, an i-beam is selected as the guide rail 40. The slider 30 is adapted to the guide rail 40, a threaded through hole is formed in a side surface of the slider 30, and the slider 30 is positioned on the guide rail 40 by screwing a countersunk screw 31 into the threaded through hole.
Referring to fig. 4, the utility model provides a snakelike special fixture group that lays of large cross-section cable, including guide rail 40 and clamp 10, be equipped with three clamp 10 through slider 30 and swivel mount 20 interval on the guide rail 40, the structure and the relation of connection of clamp 10, swivel mount 20, slider 30, guide rail 40 are the same with embodiment 1. By using the clamp group, the snake-shaped laying of the three cables can be completed at one time.
The following description will be made, taking the clamp described in embodiment 1 as an example, of a method for using the special clamp for laying a large-section cable in a serpentine shape, according to the present invention, as follows:
1. firstly, assembling a clamp, fixing the guide rail 40 on a cable bracket by using a screw, and determining the fixing point according to the snakelike laying design requirement of the cable;
2. opening the upper clamp body 11, lining the insulating pad skin, placing the cable in the lower arc-shaped plate 121 of the lower hoop, and then closing the upper and lower hoops;
3. adjusting the position of the sliding block 30 on the guide rail 40 to enable the cable to be in a proper position, and tightening the positioning screw 31 to fix the position of the sliding block 30 after the adjustment is finished;
4. after the position of each sliding block is fixed, the clamp bodies 10 at two end points of the cable are limited through the bolts 24 and the pair of arc grooves 142, and the clamping points are rigid fixing points; the flexible fixing point is arranged to enable the clamp body 10 to rotate freely by not enabling the upper end of the bolt 24 to extend into the arc groove 142, so as to release the torsional stress generated during the installation of the cable;
5. rigid fixing points and flexible fixing points are arranged at intervals at each clamping point between the whole section of cable, namely, one flexible fixing point is arranged between every two rigid fixing points.
Parts which are not specifically described in the above description are prior art or can be realized by the prior art.
Claims (10)
1. A special clamp for snakelike laying of a large-section cable is characterized by comprising a clamp body, a rotary seat, a sliding block and a guide rail; the clamp body comprises a connecting plate, a lower clamp body, an upper clamp body and a connecting bolt, the lower clamp body comprises a clamp seat and a lower hoop, the lower hoop is welded on the clamp seat, the upper clamp body comprises an upper hoop, and two ends of the upper hoop are provided with lugs; the upper hoop comprises an upper arc-shaped plate, the lower hoop comprises a lower arc-shaped plate, the upper arc-shaped plate and the lower arc-shaped plate are folded to form a cylinder, the inner diameter of the cylinder is matched with the diameter of the outer circle of the cable, and two ends of the cylinder are outwards opened to form a horn mouth; the upper and lower anchor ears are held together by connecting bolts which sequentially pass through the ear parts of the upper clamp body, the clamp holder and the connecting plate, the cable is clamped between the arc plates of the upper and lower anchor ears, the connecting plate is rotatably connected with the rotary seat, the rotary seat is fixedly connected with the slide block, and the slide block and the guide rail form a sliding pair.
2. A special fixture for snakelike laying of large-section cables as claimed in claim 1, wherein said rotary seat comprises a rotary seat body, a rotary shaft and a bearing, said bearing is mounted in said rotary seat body, the lower end of said rotary shaft is connected with the inner ring of said bearing in interference fit, and the upper end of said rotary shaft is fixedly connected with said connecting plate.
3. A special clamp for snakelike laying of a large-section cable according to claim 1, wherein the opening angle of the bell mouth is 5-15 degrees; the length of the straight cylinder section of the cylinder is 12-18 cm.
4. A large-section cable snakelike laying special clamp according to claim 1, wherein a positioning screw is arranged on the sliding block and used for limiting the position of the sliding block on the guide rail.
5. A snakelike laying special fixture for large-section cables as claimed in claim 1, wherein a limiting groove is formed in the connecting plate and used for limiting rotation of the connecting plate.
6. A special clamp group for snakelike laying of large-section cables is characterized by comprising a guide rail and a plurality of clamps slidably arranged on the guide rail through sliders, wherein the clamps are connected with the sliders through rotary seats; the upper hoop comprises an upper arc-shaped plate, the lower hoop comprises a lower arc-shaped plate, the upper arc-shaped plate and the lower arc-shaped plate are folded to form a cylinder, the inner diameter of the cylinder is matched with the diameter of the outer circle of the cable, and two ends of the cylinder are outwards opened to form a horn mouth; the upper and lower anchor ears are held together by connecting bolts which sequentially pass through the ear parts of the upper clamp body, the clamp holder and the connecting plate, the cable is clamped between the arc plates of the upper and lower anchor ears, the connecting plate is rotatably connected with the rotary seat, the rotary seat is fixedly connected with the sliding block, and the sliding block and the guide rail form a sliding pair.
7. A special fixture set for snakelike laying of large-section cables as claimed in claim 6, wherein said rotary seat comprises a rotary seat body, a rotary shaft and a bearing, the bearing is mounted in the rotary seat body, the lower end of the rotary shaft is connected with the inner ring of the bearing in an interference fit manner, and the upper end of the rotary shaft is fixedly connected with the connecting plate.
8. A special clamp group for snakelike laying of large-section cables as claimed in claim 6, wherein the opening angle of said bell mouth is 5-15 °; the length of the straight cylinder section of the cylinder is 12-18 cm.
9. A large-section cable snake-shaped laying special clamp group according to claim 6, wherein a positioning screw is arranged on the sliding block and used for limiting the position of the sliding block on the guide rail.
10. A large cross-section cable snakelike laying special fixture set according to claim 6, wherein the connecting plate is provided with a limiting groove, and the limiting groove is used for limiting rotation of the connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385163.0U CN210326886U (en) | 2019-08-23 | 2019-08-23 | Special clamp and clamp group for snakelike laying of large-section cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921385163.0U CN210326886U (en) | 2019-08-23 | 2019-08-23 | Special clamp and clamp group for snakelike laying of large-section cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210326886U true CN210326886U (en) | 2020-04-14 |
Family
ID=70131380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921385163.0U Expired - Fee Related CN210326886U (en) | 2019-08-23 | 2019-08-23 | Special clamp and clamp group for snakelike laying of large-section cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210326886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416946A (en) * | 2019-08-23 | 2019-11-05 | 国网江苏省电力有限公司南京供电分公司 | Electric cable with large cross-section snake laying special fixture, fixture group and laying method |
-
2019
- 2019-08-23 CN CN201921385163.0U patent/CN210326886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416946A (en) * | 2019-08-23 | 2019-11-05 | 国网江苏省电力有限公司南京供电分公司 | Electric cable with large cross-section snake laying special fixture, fixture group and laying method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204615300U (en) | Cable snake shaped laying fixedly uses fixture | |
| CN210326886U (en) | Special clamp and clamp group for snakelike laying of large-section cable | |
| CN110611281A (en) | Carbon fiber wire strain backup complete device | |
| CN106253189A (en) | A kind of sea cable centralized positioning clamp traction apparatus | |
| CN202167814U (en) | Flexible fixing device for vertical laying of cable with large cross-section | |
| CN110416946A (en) | Electric cable with large cross-section snake laying special fixture, fixture group and laying method | |
| CN209948583U (en) | Connecting device for power pipeline installation | |
| CN209895055U (en) | Photoelectric combined cable fixing device of underwater optical fiber repeater | |
| CN202513516U (en) | Torque energy-saving cable clamp | |
| RU2544337C1 (en) | Railway overhead catenary bracket | |
| CN202513525U (en) | Strain clamp of carbon fiber photoelectric composite lead | |
| CN112436457A (en) | CPVC cable protection pipe that shock resistance is strong | |
| CN106786281B (en) | Strain insulator pressure connecting pipe for lead wire means of defence | |
| CN219833673U (en) | Cable protection tube | |
| CN217642409U (en) | Electric power fitting for automatic power distribution network | |
| CN219626350U (en) | Corrosion-resistant high-voltage power cable | |
| CN219875020U (en) | Wire fixer | |
| CN217882788U (en) | Cable hanging rack | |
| CN217835413U (en) | Multi-cable fixing device for railway cable | |
| CN113889903B (en) | Auxiliary hardware fitting device for robot crossing high-voltage iron tower | |
| CN218124219U (en) | MPP cable protection pipe | |
| CN220853623U (en) | Wear-resistant positioning device encoder wire | |
| CN206524598U (en) | Strain clamp anticreep standby gold utensil | |
| CN220358728U (en) | High-voltage wire harness fixing structure | |
| CN215498151U (en) | Structure for radial support and axial sliding of wind power pipe bus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20210823 |