CN114180412B - Novel unwrapping wire ends contrary device - Google Patents
Novel unwrapping wire ends contrary device Download PDFInfo
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- CN114180412B CN114180412B CN202111309920.8A CN202111309920A CN114180412B CN 114180412 B CN114180412 B CN 114180412B CN 202111309920 A CN202111309920 A CN 202111309920A CN 114180412 B CN114180412 B CN 114180412B
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- cable
- clamping
- return
- balance wheel
- wedge block
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- 230000000670 limiting effect Effects 0.000 claims description 47
- 230000005484 gravity Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 8
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4418—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means
- B65H75/4421—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting directly on the material
- B65H75/4426—Stopping at the end of winding or unwinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4402—Guiding arrangements to control paying-out and re-storing of the material
- B65H75/4405—Traversing devices; means for orderly arranging the material on the drum
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- 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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/34—Handled filamentary material electric cords or electric power cables
Landscapes
- Electric Cable Arrangement Between Relatively Moving Parts (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a novel paying-off non-return device, which comprises a base, wherein a first guide seat, a first non-return structure, a non-return triggering structure and a second guide seat are arranged in the base; the non-return trigger structure is internally provided with a clamping roller which rotates vertically in a unidirectional way. The invention can effectively prevent the phenomenon of backward slipping of the cable in the paying-off work and avoid potential safety hazards.
Description
Technical Field
The invention relates to the field of power line installation, in particular to a novel paying-off non-return device.
Background
At present, in the electric power construction operation, a cable winding and unwinding machine is a common winding and unwinding device for winding and unwinding work when a matched cable is erected. However, the cable winding and unwinding machine is greatly affected by the field, and is manually dragged to perform the unwinding work in many cases. Because the artificial paying-off work has more unexpected factors, the phenomenon of the reverse slipping of the cable is easy to occur, and the potential safety hazard is brought, so that the safety accident is easy to be caused.
Disclosure of Invention
The invention aims to provide a novel paying-off non-return device which can effectively prevent the phenomenon of reverse slipping of a cable in paying-off work and avoid potential safety hazards.
The invention adopts the following technical scheme:
the novel paying-off non-return device comprises a base, wherein a first guide seat, a first non-return structure, a non-return triggering structure and a second guide seat are sequentially arranged in the base from back to front, guide rollers matched with the outer diameter of a cable are respectively arranged in the first guide seat and the second guide seat in a rotating mode, the first non-return structure comprises a first non-return structure shell, cable accommodating cavities with inclined planes formed by inwards shrinking left and right side surfaces of the rear part are respectively arranged in the first non-return structure shell, cable clamping wedges are respectively arranged in the cable accommodating cavities in a sliding mode, cable clamping wedge limiting structures are arranged on the outer sides of the cable clamping wedges, and the cable clamping wedges are not used for clamping the cable before limiting is released; after the limiting structure of the cable clamping wedge block releases the limiting, the cable clamping wedge block clamps the cable, and when the cable moves backwards, the cable clamping wedge block moves backwards to lock the cable, and the cable is limited to move through inclined planes at the left side and the right side of the rear end of the cable accommodating cavity; the cable is characterized in that the non-return trigger structure is internally provided with a clamping roller which rotates vertically in a unidirectional manner, and when the cable moves backwards, the cable drives one clamping roller to move backwards, and the backwards moving clamping roller drives the cable to clamp the wedge limiting structure through the trigger device to release the limit.
The upper surface of the first non-return structure shell is provided with a cable accommodating cavity with openings at the front side and the rear side, and the inner diameters of the openings at the front side and the rear side of the cable accommodating cavity are larger than the outer diameter of the cable; the left side surface and the right side surface of the rear part of the cable accommodating cavity are contracted inwards to form inclined planes, cable clamping wedge block sliding grooves are respectively formed in the front-rear direction on the two sides of the rear part of the cable accommodating cavity, the inclined planes of the cable clamping wedge blocks are matched with the inclined planes of the rear part of the cable accommodating cavity, cable clamping wedge block sliding rods are respectively arranged on the inclined planes of the two cable clamping wedge blocks, the cable clamping wedge blocks are in sliding connection with the first non-return structure shell through the cable clamping wedge block sliding rods and the cable clamping wedge block sliding grooves, and the outer ends of the cable clamping wedge block sliding rods protrude out of the left side and the right side of the first non-return structure shell; an arc-shaped cable accommodating groove is formed in the surface of one side, opposite to the inclined surface, of the cable clamping wedge block.
The cable clamping wedge limiting structure comprises clamping grooves which are circumferentially arranged at the outer end circumferential surface of the cable clamping wedge sliding rod, clamping plates are arranged on the outer surfaces of the left side and the right side of the first non-return structure shell, the middle part of each clamping plate is rotationally connected with the first non-return structure shell through a rotating shaft, limiting parts are vertically arranged at the upper ends of the clamping plates, and the limiting parts are clamped with the clamping grooves; when the lower end of the clamping plate is driven backwards, the limiting part at the upper end of the clamping plate is separated from the clamping groove; the front surfaces of the two cable clamping wedges are provided with spring mounting columns, wedge driving springs are sleeved on the spring mounting columns, the front ends of the wedge driving springs are connected with spring mounting plates at the front end openings of the cable accommodating cavities, the limiting structures are in a compressed state before limiting action is released, and limiting parts at the upper ends of the clamping plates are clamped in clamping grooves.
The non-return trigger structure comprises a non-return trigger shell, a first clamping roller and a second clamping roller are respectively arranged in the non-return trigger shell up and down, rotating shafts at two ends of the first clamping roller and the second clamping roller are fixed with an inner ring of a unidirectional non-return bearing, lower bearing horizontal sliding grooves are horizontally arranged at lower parts of the shells at the left side and the right side of the non-return trigger shell, a lower bearing seat is arranged in the lower bearing horizontal sliding grooves in a sliding manner, and an outer ring of the unidirectional non-return bearing mounted on the second clamping roller is fixedly connected with the lower bearing seat.
The front end of the outer surface of the lower bearing seat is provided with a first spring connecting column, the outer surface of the non-return trigger shell in front of the horizontal sliding groove of the lower bearing is provided with a second spring connecting column, a bearing seat driving spring is arranged between the first spring connecting column and the second spring connecting column, and when the lower bearing seat is positioned at the forefront of the horizontal sliding groove of the lower bearing, the bearing seat driving spring is in a stretching state.
The trigger device comprises a trigger connecting rod arranged at the rear part of the outer surface of the lower bearing seat, a connecting rod driving shaft long hole is formed in the lower part of the clamping plate along the length direction of the clamping plate, a connecting rod driving shaft is arranged in the connecting rod driving shaft long hole, and the front end of the trigger connecting rod is connected with the lower part of the clamping plate through the connecting rod driving shaft and the connecting rod driving shaft long hole.
The upper parts of the casings on the left side and the right side of the non-return trigger casing are respectively provided with an upper bearing vertical sliding groove, an upper bearing seat is arranged in the upper bearing vertical sliding grooves in a sliding mode, an outer ring of a one-way non-return bearing mounted on the first clamping roller is fixedly connected with the upper bearing seat, threaded holes communicated with the upper bearing vertical sliding grooves are respectively formed in the left side and the right side of the upper surface of the non-return trigger casing, threaded rods are arranged in the threaded holes, and the lower ends of the threaded rods are rotatably connected with the upper ends of the upper bearing seat.
The cable guide device comprises a first guide seat, a first non-return structure, a second non-return structure, an eccentric balance wheel, a guide roller, a cable passing space, a cable moving limiting device and a cable moving limiting device, wherein the first non-return structure is arranged between the first guide seat and the first non-return structure, the eccentric balance wheel and the guide roller are arranged in the second non-return structure in a vertical rotating mode, the front surface length of the eccentric balance wheel is larger than the rear surface length of the cable passing space, and the cable moving is not limited by forward rotation of the eccentric balance wheel when the cable moves forwards, and the cable is abutted against and limited by backward rotation of the eccentric balance wheel when the cable moves backwards.
The first non-return structure comprises a first non-return structure seat, an eccentric balance wheel rotating shaft is arranged at the upper part of a cavity below the first non-return structure seat, the upper end of the eccentric balance wheel is rotationally connected with the eccentric balance wheel rotating shaft through a shaft hole, and the gravity center of the eccentric balance wheel is offset with the shaft center of the shaft hole; a guide roller is arranged below the eccentric balance wheel; when the cable moves forwards, the front surface of the eccentric balance wheel rotates forwards, the cable is not limited to move forwards, and when the cable moves backwards, the front surface of the eccentric balance wheel rotates backwards, and the lower end surface of the eccentric balance wheel and the circumferential surface of the guide roller clamp the cable and limit the cable to move.
The cable guide device is characterized in that arc-shaped cable guide grooves matched with cables are formed in the circumferential surfaces of the guide rollers and the clamping rollers along the circumferential direction, and flexible insulating rubber layers are arranged on the surfaces of the cable accommodating grooves.
According to the invention, by designing the first non-return structure of the special mechanism, the cable which is retreated is held tightly by the trapezoidal cable clamping wedge blocks, and the cable movement is limited by the inclined planes at the left side and the right side of the rear end of the cable accommodating cavity, so that the contact area between the cable clamping wedge blocks and the cable is effectively increased, the cable can be prevented from continuously retreating, and the cable core in the cable can be prevented from being damaged extremely due to larger extrusion force of the cable; the invention also designs a non-return trigger structure which is installed by adopting a non-return bearing, and can play a certain non-return effect at the first time; secondly, the cable clamping wedge limiting structure can be driven to release the limit, so that the action of the first non-return structure is realized; finally, a certain straightening effect can be achieved on the cable during paying-off. The invention can effectively prevent the phenomenon of backward slipping of the cable in the paying-off work and avoid potential safety hazards.
Drawings
FIG. 1 is a schematic structural view of a first guide holder according to the present invention;
FIG. 2 is a schematic structural view of a first non-return structural shell according to the present invention;
FIG. 3 is a schematic view of the structure of the left and right cable clamping wedges of the present invention;
FIG. 4 is a schematic diagram of a structure of the stop reverse trigger structure of the present invention;
FIG. 5 is a schematic illustration of the connection of a first backstop structure and a backstop trigger structure according to the present invention;
FIG. 6 is a schematic structural view of a second non-return structure according to the present invention;
FIG. 7 is a schematic diagram showing the positional relationship of the clamping plate when the clamping plate is clamped with the clamping groove on the circumferential surface of the outer end of the sliding rod of the cable clamping wedge;
FIG. 8 is a schematic view of the relationship between the clamping plate and the clamping groove on the outer circumferential surface of the sliding rod of the cable clamping wedge when the clamping plate moves backwards;
fig. 9 is a schematic diagram of the positional relationship between the clamping plate and the clamping groove on the peripheral surface of the outer end of the sliding rod of the cable clamping wedge block when the clamping plate is completely separated.
Detailed Description
The invention is described in detail below with reference to the attached drawings and examples:
as shown in fig. 1 to 9, the novel paying-off non-return device comprises a base, wherein a first guide seat 1, a first non-return structure 2, a non-return trigger structure 3 and a second guide seat are sequentially arranged in the base from back to front (namely from an incoming line direction to an outgoing line direction), guide rollers 4 matched with the outer diameter of a cable are rotatably arranged in the first guide seat 1 and the second guide seat, the first guide seat 1 and the second guide seat are identical in structure, the cable is guided to run along a straight line direction through the guide rollers 4, and the cable is guaranteed to pass through the first non-return structure 2 and the non-return trigger structure 3 in a correct posture.
The existing paying-off non-return device realizes non-return by using the eccentric balance 34, but because the contact area between the lower end surface of the eccentric balance and the cable is smaller, if the cable is stopped by using the eccentric balance only, on one hand, if the cable retraction force is too large (such as the cable drum suddenly rotates), the non-return effect is poor, and the cable may continue to retract. On the other hand, the eccentric balance wheel is extremely easy to damage the wire core inside the cable due to the large extrusion force of the cable, so that the cable cannot work normally, is difficult to check, and easily causes potential safety hazard. Therefore, the present invention is designed with the first non-return structure 2 of a special structure.
The first non-return structure 2 comprises a first non-return structure shell 5, a cable accommodating cavity 6 with rear left and right sides shrinking inwards to form inclined planes is arranged in the first non-return structure shell 5, cable clamping wedges 7 are respectively arranged in the cable accommodating cavity 6 in a sliding manner left and right, cable clamping wedge limiting structures are arranged outside the cable clamping wedges 7, and the cable clamping wedges 7 do not clamp cables before limiting is released; after the limiting structure of the cable clamping wedge block is used for releasing limiting, the cable clamping wedge block 7 clamps the cable, and when the cable moves backwards, the cable clamping wedge block 7 moves backwards to lock the cable, and the cable is limited to move through inclined planes on the left side and the right side of the rear end of the cable accommodating cavity 6.
In the invention, the upper surface of the first non-return structure shell 5 is provided with the cable accommodating cavity 6 with openings at the front side and the rear side, and the inner diameters of the openings at the front side and the rear side of the cable accommodating cavity 6 are larger than the outer diameter of the cable, so that the cable can pass through conveniently; the left and right sides of the rear part of the cable accommodating cavity 6 are contracted inwards to form inclined planes 8, two sides of the rear part of the cable accommodating cavity 6 are respectively provided with cable clamping wedge block sliding grooves 9 along the front and rear directions, the left and right cable clamping wedges 7 are trapezoidal blocks, the inclined planes 10 of the cable clamping wedges 7 are matched with the inclined planes 8 of the rear part of the cable accommodating cavity 6, the inclined planes of the two cable clamping wedges 7 are respectively provided with a cable clamping wedge block sliding rod 11, the cable clamping wedges 7 are in sliding connection with the first non-return structure shell 5 through the cable clamping wedge block sliding rods 11 and the cable clamping wedge block sliding grooves 9, and the outer ends of the cable clamping wedge block sliding rods 11 protrude out of the left and right sides of the first non-return structure shell 5. An arc-shaped cable accommodating groove 12 is formed in the surface of one side, opposite to the inclined surface, of the cable clamping wedge block 7, the cable accommodating groove 12 with a larger area can be used for being in contact with a cable, the cable clamping wedge block 7 is driven by backward movement of the cable, and the cable clamping wedge block 7 is driven by the inclined surface to automatically clamp the cable for stopping.
In the embodiment, the cable clamping wedge limiting structure comprises clamping grooves 13 which are circumferentially arranged at the outer end of the cable clamping wedge sliding rod 11, clamping plates 14 are arranged on the outer surfaces of the left side and the right side of the first non-return structure shell 5, the middle part of each clamping plate 14 is rotationally connected with the first non-return structure shell 5 through a rotating shaft, a limiting part 37 which is perpendicular to each clamping plate 14 and forms a right angle is arranged at the upper end of each clamping plate 14, and the limiting part 37 at the upper end of each clamping plate 14 is clamped with the corresponding clamping groove 13; the front surfaces of the two cable clamping wedges 7 are provided with spring mounting columns 15, wedge driving springs 35 are sleeved on the spring mounting columns 15, the front ends of the wedge driving springs 35 are connected with spring mounting plates 16 at the front end openings of the cable accommodating cavities 6, the cable clamping wedge limiting structures are in a compressed state before limiting release, and limiting portions 37 are clamped in clamping grooves 13. When the cable clamping wedge block limiting structure releases the limit, namely the lower end of the clamping plate 14 is driven backwards to separate the limiting part 37 at the upper end of the clamping plate 14 from the clamping groove 13, at the moment, under the action of the wedge block driving spring 35, the cable clamping wedge block 7 rapidly moves backwards to clamp the cable, then the cable clamping wedge block 7 is driven by the backward movement of the cable, and the cable is automatically clamped by the cable clamping wedge block 7 to stop by using the inclined plane to drive the cable clamping wedge block 7.
The first non-return structure 2 can enlarge the contact area with the cable, reduce the damage to the cable as far as possible, realize clamping and non-return by utilizing the inclined plane simultaneously, and prevent the defects caused by independent non-return by means of the eccentric balance wheel.
In the invention, the unidirectional rotation clamping roller is arranged in the non-return triggering structure 3 in a vertical rotation way, and when the cable moves backwards, the cable drives one clamping roller to move backwards, and the backward movement clamping roller drives the limiting structure to release the limit through the triggering device. The non-return trigger structure 3 has three functions in total: firstly, a certain non-return effect can be achieved at the first time; secondly, the cable clamping wedge limiting structure can be driven to release the limit, so that the action of the first non-return structure 2 is realized; finally, a certain straightening effect can be achieved on the cable during paying-off.
In this embodiment, the non-return triggering structure 3 includes a non-return triggering housing 18, a first clamping roller 17 and a second clamping roller 19 are respectively disposed in the non-return triggering housing 18 up and down, rotation shafts at two ends of the first clamping roller 17 and the second clamping roller 19 are both fixed with inner rings of unidirectional non-return bearings 20, lower bearing horizontal sliding grooves 21 are horizontally disposed at lower portions of left and right side housings of the non-return triggering housing 18, a lower bearing seat 22 is slidably disposed in the lower bearing horizontal sliding grooves 21, and an outer ring of the unidirectional non-return bearing 20 mounted on the second clamping roller 19 is fixedly connected with the lower bearing seat 22. The unidirectional non-return bearing 20 has the function of limiting unidirectional rotation, and can realize instant locking when in reverse rotation, and the unidirectional non-return bearing 20 is a commercially available product and is not described herein. Considering that the cable surface insulating layer has certain elasticity, the distance between the first clamping roller 17 and the second clamping roller 19 can be smaller than about 0.3cm of the outer diameter of the cable, so that the cable can not be damaged, and the cable can be straightened by utilizing the first clamping roller 17 and the second clamping roller 19.
Because the interval between the first clamping roller 17 and the second clamping roller 19 is matched with the outer diameter of the cable, when the cable moves backwards in a backward sliding way, the first clamping roller 17 and the second clamping roller 19 are locked at the same time, and the fastest stopping effect can be realized.
In order to ensure that the non-return trigger structure 3 works normally when the wire is out, the front end of the surface of the lower bearing seat 22 is provided with a first spring connecting column 23, the outer surface of the non-return trigger shell 18 in front of the lower bearing horizontal sliding groove 21 is provided with a second spring connecting column 24, a bearing seat driving spring 25 is arranged between the first spring connecting column 23 and the second spring connecting column 24, and when the lower bearing seat 22 is positioned at the forefront of the lower bearing horizontal sliding groove 21, the bearing seat driving spring 25 is in a stretching state. The rearward force of the cable on the second clamping roller 19 when the wire is being fed out is counteracted by the force of the bearing housing drive spring 25. And simultaneously, the reaction speed of the non-return trigger structure 3 can be adjusted by adjusting the elastic force of the bearing seat driving spring 25.
Because the outer ring of the unidirectional non-return bearing 20 mounted on the second clamping roller 19 is fixed with the lower bearing seat 22, the lower bearing seat 22 is slidably arranged in the lower bearing horizontal sliding groove 21, when the cable overcomes the clamping force of the first clamping roller 17 and the second clamping roller 19 and the elasticity of the bearing seat driving spring 25 to continuously retreat, the cable moving backwards drives the lower bearing seat 22 to move backwards, so that the limiting structure is driven to release the limit, and the action of the first non-return structure 2 is triggered.
In the invention, the triggering device comprises a triggering connecting rod 26 horizontally arranged at the rear part of the outer surface of a lower bearing seat 22, a connecting rod driving shaft long hole 27 is arranged at the lower part of the clamping plate 14 along the length direction of the clamping plate 14, a connecting rod driving shaft 28 is arranged in the connecting rod driving shaft long hole 27, the front end of the triggering connecting rod 26 is fixed with the rear part of the outer surface of the lower bearing seat 22, and the rear end of the triggering connecting rod 26 is connected with the lower part of the clamping plate 14 through the connecting rod driving shaft 28 and the connecting rod driving shaft long hole 27. When the lower bearing seat 22 moves backwards, the trigger connecting rod 26 drives the lower end of the clamping plate 14 to move backwards, so that the upper end limiting part 37 of the clamping plate 14 is driven to move forwards to be separated from the clamping groove 13, the limiting release is realized, and the first non-return structure 2 is enabled to act.
In consideration of inconsistent outer diameters of different cables, in the invention, upper bearing vertical sliding grooves 31 are arranged on the upper parts of the shells on the left side and the right side of the non-return trigger shell 18, an upper bearing seat 32 is arranged in the upper bearing vertical sliding grooves 31 in a sliding manner, the outer ring of a one-way non-return bearing 20 arranged on a first clamping roller 17 is fixedly connected with the upper bearing seat 32, threaded holes communicated with the upper bearing vertical sliding grooves 31 are arranged on the left side and the right side of the upper surface of the non-return trigger shell 18, threaded rods 29 are arranged in the threaded holes, and the lower ends of the threaded rods 29 are rotatably connected with the upper ends of the upper bearing seats 32. By rotating the threaded rod 29, the height of the first clamping roller 17 can be adjusted to enhance the versatility of the present invention.
In the invention, in order to increase the non-return effect, a second non-return structure 33 can be arranged between the first guide seat 1 and the first non-return structure 2, an eccentric balance wheel 34 and a guide roller 4 are respectively arranged in the second non-return structure 33 in a vertical rotating way, a cable passing space is arranged between the eccentric balance wheel 34 and the guide roller 4, the front surface length of the eccentric balance wheel 34 is longer than the rear surface length, namely the radius of the front part of the eccentric balance wheel 34 is longer than the radius of the rear part; and the forward rotation of the eccentric balance 34 does not limit the cable movement when the cable moves forward, and the backward rotation of the eccentric balance 34 abuts against the cable and limits the cable movement when the cable moves backward; the first non-return structure 2 can stop the cable which is reversely slipped and moved backwards through the clamping action of the eccentric balance 34 and the guide roller 4.
In the invention, the second non-return structure 33 comprises a second non-return structure seat, an eccentric balance wheel rotating shaft 36 is arranged at the upper part of a cavity below the second non-return structure seat, the upper end of an eccentric balance wheel 34 is rotationally connected with the eccentric balance wheel rotating shaft 36 through a shaft hole, and a guide roller 4 is arranged below the eccentric balance wheel 34; the center of gravity of the eccentric balance 34 and the axis of the shaft hole are offset, so that the distance between the lower end surface of the eccentric balance 34 and the circumferential surface of the guide roller 4 positioned below the eccentric balance 34 is smaller than the outer diameter of the cable under the action of gravity and in a static state. When the cable moves forwards, the lower end of the eccentric balance wheel 34 receives the cable acting force, the front surface of the eccentric balance wheel 34 rotates forwards without limiting the cable to move forwards, and when the cable moves backwards, the front surface of the eccentric balance wheel 34 rotates backwards under the action of gravity, and the lower end surface of the eccentric balance wheel 34 and the circumferential surface of the guide roller 4 can clamp the cable and limit the cable to move backwards continuously because the length of the front surface of the eccentric balance wheel 34 is longer than that of the rear surface.
In the invention, the circumferential surfaces of the guide roller 4 and the first clamping roller 17 are provided with arc-shaped cable guide grooves matched with cables along the circumferential direction so as to better guide and clamp the cables. The surface of the cable accommodation groove 12 is provided with a flexible insulating rubber layer, so that the friction force between the cable accommodation groove and the cable surface can be effectively increased, and the insulating layer outside the cable can not be damaged. The first guide seat 1, the first non-return structure 2, the second non-return structure 33, the non-return triggering structure 3 and the second guide seat are all fixed on the base, and the base can be fixed by adopting modes of plugging, bolting and the like. And the cable passing spaces in the first guide seat 1, the first non-return structure 2, the second non-return structure 33, the non-return trigger structure 3 and the second guide seat all keep the same height, so that the cable passes in a straight line state.
In the invention, the time and sequence of the backstop function of the backstop trigger structure 3, the first backstop structure 2 and the second backstop structure 33 can be realized by adjusting the elastic force of the bearing seat driving spring 25, the speed of releasing the limit of the trigger connecting rod 26 and the size of the eccentric balance 34, so as to achieve the optimal paying-off backstop effect. And after the paying-off non-return function is realized once, the second non-return structure 33 can be automatically reset, and the non-return trigger structure 3 and the first non-return structure 2 can be manually reset, so that the pay-off non-return structure can be continuously used. The invention adopts a pure mechanical design, can be suitable for various occasions with bad outdoor conditions, and has high reliability.
Claims (10)
1. Novel unwrapping wire non-return device, its characterized in that: the cable clamping wedge block is arranged in the cable accommodating cavity in a sliding manner from left to right, a cable clamping wedge block limiting structure is arranged on the outer side of the cable clamping wedge block, and the cable clamping wedge block limiting structure does not clamp a cable before limiting is released; after the limiting structure of the cable clamping wedge block releases the limiting, the cable clamping wedge block clamps the cable, and when the cable moves backwards, the cable clamping wedge block moves backwards to lock the cable, and the cable is limited to move through inclined planes at the left side and the right side of the rear end of the cable accommodating cavity; the cable is characterized in that the non-return trigger structure is internally provided with a clamping roller which rotates vertically in a unidirectional manner, and when the cable moves backwards, the cable drives one clamping roller to move backwards, and the backwards moving clamping roller drives the cable to clamp the wedge limiting structure through the trigger device to release the limit.
2. The novel pay-off backstop device according to claim 1, wherein: the upper surface of the first non-return structure shell is provided with a cable accommodating cavity with openings at the front side and the rear side, and the inner diameters of the openings at the front side and the rear side of the cable accommodating cavity are larger than the outer diameter of the cable; the left side surface and the right side surface of the rear part of the cable accommodating cavity are contracted inwards to form inclined planes, cable clamping wedge block sliding grooves are respectively formed in the front-rear direction on the two sides of the rear part of the cable accommodating cavity, the inclined planes of the cable clamping wedge blocks are matched with the inclined planes of the rear part of the cable accommodating cavity, cable clamping wedge block sliding rods are respectively arranged on the inclined planes of the two cable clamping wedge blocks, the cable clamping wedge blocks are in sliding connection with the first non-return structure shell through the cable clamping wedge block sliding rods and the cable clamping wedge block sliding grooves, and the outer ends of the cable clamping wedge block sliding rods protrude out of the left side and the right side of the first non-return structure shell; an arc-shaped cable accommodating groove is formed in the surface of one side, opposite to the inclined surface, of the cable clamping wedge block.
3. The novel pay-off backstop device according to claim 2, wherein: the cable clamping wedge limiting structure comprises clamping grooves which are circumferentially arranged at the outer end circumferential surface of the cable clamping wedge sliding rod, clamping plates are arranged on the outer surfaces of the left side and the right side of the first non-return structure shell, the middle part of each clamping plate is rotationally connected with the first non-return structure shell through a rotating shaft, limiting parts are vertically arranged at the upper ends of the clamping plates, and the limiting parts are clamped with the clamping grooves; when the lower end of the clamping plate is driven backwards, the limiting part at the upper end of the clamping plate is separated from the clamping groove; the front surfaces of the two cable clamping wedges are provided with spring mounting columns, wedge driving springs are sleeved on the spring mounting columns, the front ends of the wedge driving springs are connected with spring mounting plates at the front end openings of the cable accommodating cavities, the limiting structures are in a compressed state before limiting action is released, and limiting parts at the upper ends of the clamping plates are clamped in clamping grooves.
4. A novel pay-off backstop according to claim 3, wherein: the non-return trigger structure comprises a non-return trigger shell, a first clamping roller and a second clamping roller are respectively arranged in the non-return trigger shell up and down, rotating shafts at two ends of the first clamping roller and the second clamping roller are fixed with an inner ring of a unidirectional non-return bearing, lower bearing horizontal sliding grooves are horizontally arranged at lower parts of the shells at the left side and the right side of the non-return trigger shell, a lower bearing seat is arranged in the lower bearing horizontal sliding grooves in a sliding manner, and an outer ring of the unidirectional non-return bearing mounted on the second clamping roller is fixedly connected with the lower bearing seat.
5. The novel pay-off backstop device according to claim 4, wherein: the front end of the outer surface of the lower bearing seat is provided with a first spring connecting column, the outer surface of the non-return trigger shell in front of the horizontal sliding groove of the lower bearing is provided with a second spring connecting column, a bearing seat driving spring is arranged between the first spring connecting column and the second spring connecting column, and when the lower bearing seat is positioned at the forefront of the horizontal sliding groove of the lower bearing, the bearing seat driving spring is in a stretching state.
6. The novel pay-off backstop device according to claim 5, wherein: the trigger device comprises a trigger connecting rod arranged at the rear part of the outer surface of the lower bearing seat, a connecting rod driving shaft long hole is formed in the lower part of the clamping plate along the length direction of the clamping plate, a connecting rod driving shaft is arranged in the connecting rod driving shaft long hole, the front end of the trigger connecting rod is fixed at the rear part of the outer surface of the lower bearing seat (22), and the rear end of the trigger connecting rod is connected with the lower part of the clamping plate through the connecting rod driving shaft and the connecting rod driving shaft long hole.
7. The novel pay-off backstop device according to claim 6, wherein: the upper parts of the casings on the left side and the right side of the non-return trigger casing are respectively provided with an upper bearing vertical sliding groove, an upper bearing seat is arranged in the upper bearing vertical sliding grooves in a sliding mode, an outer ring of a one-way non-return bearing mounted on the first clamping roller is fixedly connected with the upper bearing seat, threaded holes communicated with the upper bearing vertical sliding grooves are respectively formed in the left side and the right side of the upper surface of the non-return trigger casing, threaded rods are arranged in the threaded holes, and the lower ends of the threaded rods are rotatably connected with the upper ends of the upper bearing seat.
8. The novel pay-off backstop device according to claim 2, wherein: the cable guide device is characterized by further comprising a second non-return structure arranged between the first guide seat and the first non-return structure, wherein an eccentric balance wheel and a guide roller are respectively arranged in the second non-return structure in a vertical rotating mode, a cable passing space is formed between the eccentric balance wheel and the guide roller, the length of the front surface of the eccentric balance wheel is larger than that of the rear surface, the movement of the cable is not limited by forward rotation of the eccentric balance wheel when the cable moves forwards, and the cable is tightly abutted by backward rotation of the eccentric balance wheel and the movement of the cable is limited when the cable moves backwards.
9. The novel pay-off backstop device according to claim 8, wherein: the second non-return structure comprises a second non-return structure seat, an eccentric balance wheel rotating shaft is arranged at the upper part of a cavity below the second non-return structure seat, the upper end of the eccentric balance wheel is rotationally connected with the eccentric balance wheel rotating shaft through a shaft hole, and the gravity center of the eccentric balance wheel is offset with the shaft center of the shaft hole; a guide roller is arranged below the eccentric balance wheel; when the cable moves forwards, the front surface of the eccentric balance wheel rotates forwards, the cable is not limited to move forwards, and when the cable moves backwards, the front surface of the eccentric balance wheel rotates backwards, and the lower end surface of the eccentric balance wheel and the circumferential surface of the guide roller clamp the cable and limit the cable to move.
10. The novel pay-off backstop device according to claim 2, wherein: the cable guide device is characterized in that arc-shaped cable guide grooves matched with cables are formed in the circumferential surfaces of the guide rollers and the clamping rollers along the circumferential direction, and flexible insulating rubber layers are arranged on the surfaces of the cable accommodating grooves.
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| CN202111309920.8A CN114180412B (en) | 2021-11-08 | 2021-11-08 | Novel unwrapping wire ends contrary device |
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| CN202111309920.8A CN114180412B (en) | 2021-11-08 | 2021-11-08 | Novel unwrapping wire ends contrary device |
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| CN114180412B true CN114180412B (en) | 2023-11-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114873373B (en) * | 2022-05-12 | 2023-11-07 | 国网河南省电力公司新安县供电公司 | Paying-off pulley device |
| CN115458226B (en) * | 2022-08-19 | 2023-08-11 | 山东华新通信科技有限公司 | High shielding vibration coaxial cable |
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| CN114180412A (en) | 2022-03-15 |
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