CN216287665U - Protective type fire-resistant power cable with polyvinyl chloride insulating sheath - Google Patents
Protective type fire-resistant power cable with polyvinyl chloride insulating sheath Download PDFInfo
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- CN216287665U CN216287665U CN202122580551.8U CN202122580551U CN216287665U CN 216287665 U CN216287665 U CN 216287665U CN 202122580551 U CN202122580551 U CN 202122580551U CN 216287665 U CN216287665 U CN 216287665U
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Abstract
The utility model discloses a protective fire-resistant power cable with a polyvinyl chloride insulating sheath, which comprises a fire-resistant power cable body with the polyvinyl chloride insulating sheath, wherein a circle of protective shock-absorbing layer is additionally arranged outside the fire-resistant power cable body with the polyvinyl chloride insulating sheath, an arc-shaped guide slide rod is correspondingly fixed in a groove cavity of each arc-shaped pressure groove, two walking slide blocks are correspondingly sleeved on each arc-shaped guide slide rod in a sliding mode, a first shock-absorbing buffer spring is correspondingly sleeved on a rod body corresponding to the arc-shaped guide slide rod between every two walking slide blocks, every two pressure-moving deflection rods are arranged into a group, a second shock-absorbing buffer spring is additionally arranged between the middle positions of the rod bodies of the two pressure-moving deflection rods in each group, and a support pressure arm penetrates upwards through a support sleeve and then is correspondingly fixed on the inner surface of the protective shock-absorbing layer. The cable body can not be directly damaged due to the action of external force, and the service life of the cable is effectively prolonged.
Description
Technical Field
The utility model relates to the related technical field of power cables, in particular to a protective type fire-resistant power cable with a polyvinyl chloride insulating sheath.
Background
Cables are generally rope-like cables made up of several or groups of at least two twisted conductors, each group insulated from each other and often twisted around a center, the entire outer surface of which is covered with a highly insulating covering. The device is erected in the air or installed underground or underwater for telecommunication or power transmission. The cable may be classified into a power cable, a communication cable, a control cable, and the like according to its use. Compared with an overhead line, the cable has the advantages of small insulating distance between lines, small occupied space, no occupation of space above the ground due to underground laying, no influence of pollution of the surrounding environment, high power transmission reliability, and small interference on personal safety and the surrounding environment. But the cost is high, the construction and the maintenance are troublesome, and the manufacture is complicated. Therefore, the cable is mostly applied to dense areas of population and power grids and places with heavy traffic; when the cable is laid in the river, the river and the seabed, the use of large-span overhead lines can be avoided. Cables may also be used where it is desirable to avoid interference of overhead lines with communications and where aesthetic considerations or exposure to objects are desired.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a device in the prior art, which refers to a utility model named as a protective fire-resistant power cable with polyvinyl chloride insulation sheath (patent No. CN206541661U) disclosed in the chinese patent network.
The structure shown in the figure comprises a fire-resistant power cable body 1 made of polyvinyl chloride insulating sheath, and the specific details of the construction of the cable are described in detail in this patent and in existing patents, and are not described in detail here.
Although the prior art cable can realize the characteristics of insulation, fire resistance and the like, the cable has a serious defect that the protection performance of the whole cable body is poor, once the cable is impacted by external force, the stability is poor due to the fact that no anti-collision damping mechanism is designed on the external structure of the cable body, the cable body is directly damaged, the service life of the cable is directly shortened, and therefore structural improvement must be carried out on the prior art cable to overcome the defect that the protection performance in the prior art cable is poor, and the design practicability is guaranteed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a protective polyvinyl chloride insulating sheath fire-resistant power cable to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a protective fire-resistant power cable with a polyvinyl chloride insulating sheath comprises a fire-resistant power cable body with the polyvinyl chloride insulating sheath, wherein a circle of protective shock-absorbing layer is additionally arranged outside the fire-resistant power cable body with the polyvinyl chloride insulating sheath, arc-shaped pressure-bearing grooves are correspondingly formed in the inner wall surface of the protective shock-absorbing layer along the circumferential direction at intervals, arc-shaped guide sliding rods are correspondingly fixed in the groove cavities of the arc-shaped pressure-bearing grooves, two walking sliding blocks are correspondingly sleeved on each arc-shaped guide sliding rod in a sliding mode, a first shock-absorbing buffer spring is correspondingly sleeved between each two walking sliding blocks and on a rod body corresponding to the arc-shaped guide sliding rods, walking rolling balls are correspondingly installed on outer side edge blocks of the walking sliding blocks through small rotating shafts, and a pressure-moving deflection rod is also rotatably hinged on the surface of an inner side edge block of each walking sliding block through a small-size hinge seat, the other ends of every two pressure deflection rods are hinged to the outer surface of the polyvinyl chloride insulating sheath fire-resistant power cable body together through a large-size hinge base in a rotating mode, every two pressure deflection rods are arranged into a group, a second damping buffer spring is additionally arranged between the middle positions of the rod bodies of every two pressure deflection rods, a supporting sleeve is correspondingly fixed on the outer surface of the polyvinyl chloride insulating sheath fire-resistant power cable body along the circumferential direction at every interval angle, a lifting pressing block is correspondingly arranged in a cylinder cavity of each supporting sleeve, guide wheels are correspondingly arranged on the blocks on the left side and the right side of each lifting pressing block and are correspondingly limited in guide tracks formed in the side walls, a third damping buffer spring is correspondingly arranged below each lifting pressing block, and a supporting pressure arm is fixed at the central position of the upper surface of each block of each lifting pressing block, the supporting pressure arm penetrates upwards through the supporting sleeve and then is correspondingly fixed on the inner surface of the protective damping layer.
As a further scheme of the utility model: the arc-shaped guide sliding rod is correspondingly arranged through a through center hole in the walking sliding block.
As a still further scheme of the utility model: the walking rolling ball is arranged close to the bottom surface of the arc-shaped pressed groove.
As a still further scheme of the utility model: and two ends of the first damping buffer spring are respectively fixed on the two walking slide blocks.
As a still further scheme of the utility model: the four supporting sleeves and the four large-size hinged seats are distributed at equal intervals.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model improves the structure of a protective polyvinyl chloride insulating sheath fire-resistant power cable (with the patent number of CN206541661U) disclosed on a Chinese patent network, a protective damping layer, an arc-shaped sliding guide rod, a walking slider, a first damping buffer spring, a pressure-driven deflection rod, a second damping buffer spring, a large-size hinged seat, a support sleeve, a lifting press block, a third damping buffer spring and a support pressure arm are additionally arranged on the structural basis of the device, and the three damping buffer effects are jointly played by three damping buffer actions, so that the normal operation of power transmission can still be ensured after the cable body is impacted by external force by utilizing the triple protection measures, the cable body can not be directly damaged due to the external force, the service life of the cable is effectively prolonged, the use safety is ensured, the structural design is reasonable and ingenious, and the safety and the reliability are realized, has good popularization and application value.
Drawings
Fig. 1 is a schematic structural diagram of a device in the prior art, which refers to a utility model named as a protective fire-resistant power cable with polyvinyl chloride insulating sheath (patent No. CN206541661U) disclosed in the chinese patent network.
Fig. 2 is a schematic structural diagram of an improved device, and reference is made to a utility model named as a protective fire-resistant power cable with a polyvinyl chloride insulating sheath (patent No. CN206541661U) disclosed in the chinese patent network for the basic structure of the improved device.
Fig. 3 is an enlarged schematic view of the point (r) in fig. 2.
Fig. 4 is an enlarged schematic structural view of the position ② in fig. 2.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a device in the prior art, which refers to a utility model named as a protective fire-resistant power cable with polyvinyl chloride insulation sheath (patent No. CN206541661U) disclosed in the chinese patent network.
The structure shown in the figure comprises a fire-resistant power cable body 1 made of polyvinyl chloride insulating sheath, and the specific details of the construction of the cable are described in detail in this patent and in existing patents, and are not described in detail here.
Although the prior art cable can realize the characteristics of insulation, fire resistance and the like, the cable has a serious defect that the protection performance of the whole cable body is poor, once the cable is impacted by external force, the stability is poor due to the fact that no anti-collision damping mechanism is designed on the external structure of the cable body, the cable body is directly damaged, the service life of the cable is directly shortened, and therefore structural improvement must be carried out on the prior art cable to overcome the defect that the protection performance in the prior art cable is poor, and the design practicability is guaranteed.
Referring to fig. 2-4, fig. 2 is a schematic structural diagram of an improved device, and the basic structure of the improved device refers to a utility model named as a protective fire-resistant power cable with polyvinyl chloride insulation sheath (patent No. CN206541661U) disclosed in the chinese patent network.
A fire-resistant power cable with a protective polyvinyl chloride insulating sheath structurally comprises a fire-resistant power cable body 1 with the polyvinyl chloride insulating sheath.
The difference is that:
the fire-resistant power cable comprises a fire-resistant power cable body 1 with a polyvinyl chloride insulating sheath, wherein a circle of protective damping layer 2 is additionally arranged outside the fire-resistant power cable body 1, an arc-shaped pressure-bearing groove 201 is correspondingly formed in the inner wall surface of the protective damping layer 2 at an interval of 90 degrees along the circumferential direction, an arc-shaped guide slide rod 3 is correspondingly fixed in a groove cavity of each arc-shaped pressure-bearing groove 201, two walking sliders 4 are correspondingly sleeved on each arc-shaped guide slide rod 3 in a sliding mode, the arc-shaped guide slide rods 3 correspondingly penetrate through center holes formed in the walking sliders 4, a first damping buffer spring 9 is correspondingly sleeved between each two walking sliders 4 and on a rod body corresponding to the arc-shaped guide slide rod 3, two ends of each first damping buffer spring 9 are respectively fixed to the two walking sliders 4, walking rolling balls 15 are further correspondingly arranged on block bodies on the outer side edges of the walking sliders 4 through small rotating shafts 14, and the walking rolling balls 15 are arranged to be attached to the bottom surfaces of the arc-shaped pressure-bearing grooves 201, the surface of an inner side block of each walking slider 4 is also rotatably hinged with a pressing deflection rod 5 through a small-size hinge seat 7, the other end of each two pressing deflection rods 5 is rotatably hinged to the outer surface of the polyvinyl chloride insulating sheath fire-resistant power cable body 1 through a large-size hinge seat 8, every two pressing deflection rods 5 are arranged into a group, a second damping buffer spring 6 is additionally arranged between the middle positions of rod bodies of the two pressing deflection rods 5 in each group, a support sleeve 10 is correspondingly fixed on the outer surface of the polyvinyl chloride insulating sheath fire-resistant power cable body 1 at intervals of 90 degrees along the circumferential direction, the four support sleeves 10 and the four large-size hinge seats 8 are distributed at equal intervals, a lifting press block 12 is correspondingly arranged in a cylinder cavity of each support sleeve 10, guide wheels are correspondingly arranged on left and right side blocks of the lifting press block 12, and are correspondingly limited to guide rails 16 arranged on the side walls, a third damping buffer spring 11 is correspondingly arranged below each lifting pressing block 12, a supporting pressing arm 13 is fixed at the central position of the upper surface of the block body of each lifting pressing block 12, and the supporting pressing arm 13 penetrates through the supporting sleeve 10 upwards and then is correspondingly fixed on the inner surface of the protective damping layer 2.
The utility model carries out structural improvement on a utility model patent of a protective polyvinyl chloride insulating sheath fire-resistant power cable (with the patent number of CN206541661U) disclosed on a Chinese patent network, a protective damping layer 2, an arc-shaped guide slide rod 3, a walking slider 4, a first damping buffer spring 9, a pressure deflection rod 5, a second damping buffer spring 6, a large-size articulated seat 8, a support sleeve 10, a lifting press block 12, a third damping buffer spring 11 and a support press arm 13 are additionally arranged on the structural basis of the device, when the cable is impacted by external force in actual work, because an arc-shaped guide slide rod 3 is correspondingly fixed in a groove cavity of each arc-shaped pressure groove 201, two walking sliders 4 are correspondingly sleeved on each arc-shaped guide slide rod 3 in a sliding mode, the arc-shaped guide slide rod 3 is correspondingly provided with a through center hole on the walking slider 4, and the two walking sliders 4 are opposite to two sides along the arc-shaped guide slide rod 3, because the block body at the outer side of the traveling slider 4 is also correspondingly provided with the traveling rolling ball 15 through the small-sized rotating shaft 14 and the traveling rolling ball 15 is arranged close to the bottom surface of the arc-shaped pressed groove 201, the moving smoothness of the traveling slider 4 is ensured, the first damping buffer spring 9 is utilized to play a role of primary damping and buffering, the surface of the inner side block of each traveling slider 4 is also rotatably hinged with a pressing deflection rod 5 through a small-sized hinging seat 7, the other ends of every two pressing deflection rods 5 are rotatably hinged to the outer surface of the polyvinyl chloride insulating sheath fireproof power cable body 1 through a large-sized hinging seat 8, every two pressing deflection rods 5 are arranged into a group, a second damping buffer spring 6 is additionally arranged between the middle positions of the rod bodies of the two pressing deflection rods 5 in each group, the angle formed between the two pressing deflection rods 5 is increased, and the second damping buffer spring 6 is utilized to play a role of secondary damping and buffering, meanwhile, the supporting pressure arm 13 presses the lifting press block 12 to move downwards, the lifting press block 12 moves more smoothly under the matching that a guide wheel is correspondingly arranged on each of the left and right side blocks of the lifting press block 12 and the guide wheels are correspondingly limited to the guide rails 16 arranged on the side walls, and then the third damping buffer spring 11 is compressed to deform, the third damping buffer spring 11 is utilized to play a role of damping and buffering for three times, and the triple protection effect is jointly played by the damping and buffering for three times, so that the normal operation of power transmission can still be ensured after the cable body is impacted by external force by utilizing triple protection measures, the cable body cannot be directly damaged due to the external force, the service life of the cable is effectively prolonged, the use safety is ensured, the structural design is reasonable and ingenious, the safety and the reliability are high, and the popularization and application values are good.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (5)
1. A protective fire-resistant power cable with a polyvinyl chloride insulating sheath comprises a fire-resistant power cable body (1) with the polyvinyl chloride insulating sheath, and is characterized in that a circle of protective shock-absorbing layer (2) is additionally arranged outside the fire-resistant power cable body (1) with the polyvinyl chloride insulating sheath, an arc compression groove (201) is correspondingly formed in the inner wall surface of the protective shock-absorbing layer (2) along the circumferential direction at an angle of 90 degrees, an arc guide sliding rod (3) is correspondingly fixed in a groove cavity of each arc compression groove (201), two walking sliders (4) are correspondingly sleeved on each arc guide sliding rod (3) in a sliding mode, a first shock-absorbing buffer spring (9) is correspondingly sleeved on a rod body corresponding to the arc guide sliding rod (3) between every two walking sliders (4), and a walking slider (15) is correspondingly installed on the outer side block body of each walking slider (4) through a small rotating shaft (14), the surface of an inner side block of each walking slider (4) is also rotatably hinged with a pressing deflection rod (5) through a small-size hinge seat (7), the other ends of every two pressing deflection rods (5) are rotatably hinged to the outer surface of a polyvinyl chloride insulating sheath fireproof power cable body (1) through a large-size hinge seat (8), every two pressing deflection rods (5) are arranged into a group, a second damping buffer spring (6) is additionally arranged between the middle positions of rod bodies of every two pressing deflection rods (5), a supporting sleeve (10) is correspondingly fixed on the outer surface of the polyvinyl chloride insulating sheath fireproof power cable body (1) at intervals of 90 degrees in the circumferential direction, a lifting pressing block (12) is correspondingly arranged in a cylinder cavity of each supporting sleeve (10), guide wheels are correspondingly arranged on left and right side blocks of each lifting pressing block (12) and are correspondingly limited to guide rails (16) arranged on the side walls, a third damping buffer spring (11) is correspondingly arranged below each lifting pressing block (12), a supporting pressing arm (13) is fixed at the central position of the upper surface of the block body of each lifting pressing block (12), and the supporting pressing arm (13) penetrates through the supporting sleeve (10) upwards and then is correspondingly fixed on the inner surface of the protective damping layer (2).
2. The fire-resistant power cable with the protective polyvinyl chloride insulating sheath as claimed in claim 1, wherein the arc-shaped guide sliding rod (3) is correspondingly arranged through a through center hole in the walking sliding block (4).
3. The fire-resistant power cable with the protective polyvinyl chloride insulating sheath as claimed in claim 1, wherein the walking rolling balls (15) are arranged in close contact with the bottom surface of the arc-shaped pressure-bearing groove (201).
4. The fire-resistant power cable with the protective polyvinyl chloride insulating sheath as claimed in claim 1, wherein two ends of the first damping and buffering spring (9) are respectively fixed to the two walking sliders (4).
5. The fire-resistant power cable with the protective polyvinyl chloride insulating sheath as claimed in claim 1, wherein the four supporting sleeves (10) and the four large-size hinged seats (8) are arranged at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122580551.8U CN216287665U (en) | 2021-10-26 | 2021-10-26 | Protective type fire-resistant power cable with polyvinyl chloride insulating sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122580551.8U CN216287665U (en) | 2021-10-26 | 2021-10-26 | Protective type fire-resistant power cable with polyvinyl chloride insulating sheath |
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| Publication Number | Publication Date |
|---|---|
| CN216287665U true CN216287665U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122580551.8U Active CN216287665U (en) | 2021-10-26 | 2021-10-26 | Protective type fire-resistant power cable with polyvinyl chloride insulating sheath |
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| CN (1) | CN216287665U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117198616A (en) * | 2023-10-27 | 2023-12-08 | 南京木石砾建设工程有限公司 | High-voltage-resistant variable-frequency cable |
-
2021
- 2021-10-26 CN CN202122580551.8U patent/CN216287665U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117198616A (en) * | 2023-10-27 | 2023-12-08 | 南京木石砾建设工程有限公司 | High-voltage-resistant variable-frequency cable |
| CN117198616B (en) * | 2023-10-27 | 2024-04-30 | 昆山磐锦实电子科技有限公司 | High-voltage-resistant variable-frequency cable |
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