CN114180412A - Novel paying-off non-return device - Google Patents
Novel paying-off non-return device Download PDFInfo
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- CN114180412A CN114180412A CN202111309920.8A CN202111309920A CN114180412A CN 114180412 A CN114180412 A CN 114180412A CN 202111309920 A CN202111309920 A CN 202111309920A CN 114180412 A CN114180412 A CN 114180412A
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- wedge block
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- 230000000670 limiting effect Effects 0.000 claims abstract description 56
- 230000005484 gravity Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
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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
-
- 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
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- Bridges Or Land Bridges (AREA)
- Electric Cable Arrangement Between Relatively Moving Parts (AREA)
Abstract
The invention discloses a novel paying-off backstop device, which comprises a base, wherein a first guide seat, a first backstop structure, a backstop trigger structure and a second guide seat are arranged in the base, guide rollers matched with the outer diameter of a cable are rotatably arranged in the first guide seat and the second guide seat respectively, the first backstop structure comprises a first backstop structure shell, a cable accommodating cavity is arranged in the first backstop structure shell, the left side surface and the right side surface of the rear part of the cable accommodating cavity both contract inwards to form an inclined surface, cable clamping wedge blocks are arranged in the cable accommodating cavity in a left-right sliding mode respectively, and a cable clamping wedge block limiting structure is arranged on the outer side of each cable clamping wedge block; the non-return trigger structure is internally provided with a clamping roller which rotates in a single direction. The invention can effectively prevent the cable from reversely slipping in the paying-off work and avoid potential safety hazard.
Description
Technical Field
The invention relates to the field of power line installation, in particular to a novel paying-off backstop device.
Background
At present, in the electric power construction operation, a cable winding and unwinding machine is a common winding and unwinding device, and is used for matching with the winding and unwinding work during cable erection. But because the use of cable take-up and pay-off machine is influenced by the place great, still pull by the manual work and carry out unwrapping wire work many times. The phenomenon of reverse slippage of the cable is easily caused due to a plurality of unexpected factors in manual paying-off work, so that great potential safety hazards are brought, and safety accidents are easily caused.
Disclosure of Invention
The invention aims to provide a novel pay-off backstop device which can effectively prevent a cable from reversely slipping in pay-off work and avoid potential safety hazards.
The invention adopts the following technical scheme:
a novel paying-off backstop device comprises a base, wherein a first guide seat, a first backstop structure, a backstop trigger 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 rotatably arranged in the first guide seat and the second guide seat respectively, the first backstop structure comprises a first backstop structure shell, a cable accommodating cavity is formed in the first backstop structure shell, the left side surface and the right side surface of the rear portion of the cable accommodating cavity both contract inwards to form an inclined surface, cable clamping wedge blocks are arranged in the cable accommodating cavity in a sliding mode from left to right, a cable clamping wedge block limiting structure is arranged on the outer side of each cable clamping wedge block, and the cable clamping wedge block limiting structure does not clamp the cable before the limiting is relieved; after the cable clamping wedge limiting structure relieves the limiting, the cable clamping wedge clamps the cable, the cable clamping wedge moves backwards to lock the cable when the cable moves backwards, and the movement of the cable is limited by the left and right inclined surfaces at the rear end of the cable accommodating cavity; the cable drives one clamping roller to move backwards when the cable moves backwards, and the backwards moving clamping roller drives the cable to clamp the wedge limiting structure through the triggering device to relieve the limiting.
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 both contract inwards to form an inclined surface, two sides of the rear part of the cable accommodating cavity are respectively provided with cable clamping wedge block sliding grooves along the front and rear directions, the left cable clamping wedge block and the right cable clamping wedge block are both trapezoidal blocks, the inclined surface of each cable clamping wedge block is matched with the slope of the inclined surface of the rear part of the cable accommodating cavity, cable clamping wedge block sliding rods are arranged on the inclined surfaces of the two cable clamping wedge blocks, each cable clamping wedge block is in sliding connection with the first non-return structure shell through each cable clamping wedge block sliding rod and each cable clamping wedge block sliding groove, 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 plane, of the cable clamping wedge block.
The cable clamping wedge limiting structure comprises clamping grooves which are circumferentially arranged on the circumferential surface of the outer end 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 of each clamping plate is rotatably connected with the first non-return structure shell through a rotating shaft, a limiting part is vertically arranged at the upper end of each clamping plate, and each limiting part is clamped with each clamping groove; 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 wedge blocks are provided with spring mounting columns, wedge block driving springs are sleeved on the spring mounting columns, the front ends of the wedge block driving springs are connected with spring mounting plates at the front end openings of the cable containing cavities, the limiting structures are in a compressed state before limiting actions are relieved, and limiting parts at the upper ends of the clamping plates are clamped in the clamping grooves.
The non-return trigger structure comprises a non-return trigger shell, wherein a first clamping roller and a second clamping roller are arranged in the non-return trigger shell from top to bottom, rotating shafts at two ends of the first clamping roller and the second clamping roller are fixed with an inner ring of a one-way non-return bearing, lower bearing horizontal sliding grooves are horizontally arranged at the lower parts of the shell on the left side and the right side of the non-return trigger shell, a lower bearing seat is arranged in each lower bearing horizontal sliding groove in a sliding mode, and an outer ring of the one-way non-return bearing installed 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 backstop 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, the 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 portion of the shell on the left side and the upper portion of the shell on the right side of the non-return trigger shell are respectively provided with an upper bearing vertical sliding groove, an upper bearing seat is arranged in the upper bearing vertical sliding groove in a sliding mode, an outer ring of a one-way non-return bearing installed on a first clamping roller is fixedly connected with the upper bearing seat, the left side and the right side of the upper surface of the non-return trigger shell are respectively provided with a threaded hole communicated with the upper bearing vertical sliding groove, a threaded rod is arranged in the threaded hole, and the lower end of the threaded rod is rotatably connected with the upper end of the upper bearing seat.
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, an eccentric balance wheel and a guide roller wheel are arranged in the second non-return structure in a vertically rotating mode, a cable passing space is formed between the eccentric balance wheel and the guide roller wheel, the length of the front surface of the eccentric balance wheel is larger than that of the rear surface of the eccentric balance wheel, the eccentric balance wheel rotates forwards when the cable moves forwards without limiting the movement of the cable, and the eccentric balance wheel rotates backwards to abut against the cable and limit the movement of the cable 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 an 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 and the shaft center of the shaft hole are offset; 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 without limiting the forward movement of the cable, 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 movement of the cable.
The cable clamping device is characterized in that arc-shaped cable guide grooves matched with cables are formed in the circumferential surfaces of the guide idler wheels and the clamping idler wheels 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 retreating is tightly held by the trapezoidal cable clamping wedge block, and the movement of the cable 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 block and the cable is effectively increased, the cable can be prevented from continuously retreating, and the phenomenon that the cable core in the cable is easily damaged by large extrusion force on the cable can be avoided; the invention also designs a non-return trigger structure which adopts a one-way non-return bearing to install, and 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 limiting, so that the action of the first non-return structure is realized; and finally, the cable straightening device can also play a certain straightening role in the paying-off process. The invention can effectively prevent the cable from reversely slipping in the paying-off work and avoid potential safety hazard.
Drawings
FIG. 1 is a schematic structural view of a first guide seat according to the present invention;
FIG. 2 is a schematic structural diagram of a first backstop housing according to the present invention;
FIG. 3 is a schematic structural view of a left cable clamping wedge and a right cable clamping wedge in the present invention;
FIG. 4 is a schematic structural diagram of a non-return trigger structure according to the present invention;
FIG. 5 is a schematic diagram of the connection of a first backstop structure and a backstop trigger structure according to the present invention;
FIG. 6 is a schematic structural diagram of a second backstop structure according to the present invention;
FIG. 7 is a schematic view showing the positional relationship between the clamping plate and the clamping groove on the outer circumferential surface of the sliding rod of the cable clamping wedge;
FIG. 8 is a schematic view showing the positional 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 backward;
FIG. 9 is a schematic diagram showing the positional 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 and the cable clamping wedge are completely separated.
Detailed Description
The invention is described in detail below with reference to the following figures and examples:
as shown in fig. 1 to 9, the novel pay-off backstop device of the invention comprises a base, wherein a first guide seat 1, a first backstop structure 2, a backstop trigger structure 3 and a second guide seat are sequentially arranged in the base from back to front (i.e. from a wire inlet direction to a wire outlet 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 have the same structure, and the cable is guided by the guide rollers 4 to run along a straight line direction, so that the cable is ensured to pass through the first backstop structure 2 and the backstop trigger structure 3 at a correct posture.
The existing wire releasing and backstopping device partially utilizes the eccentric balance wheel 34 to realize backstopping, but because the contact area between the lower end surface of the eccentric balance wheel and the cable is small, if the cable is only stopped by the eccentric balance wheel, on one hand, if the cable withdrawal force is too large (such as the cable disc suddenly rotates), the stopping effect is poor, and the cable may continue to withdraw. On the other hand, the larger extrusion force of the eccentric balance wheel to the cable is easy to damage the wire core inside the cable, so that the cable cannot normally work and is difficult to inspect, and potential safety hazards are easy to cause. Therefore, the present invention is designed with the first backstop structure 2 of a special structure.
The first backstop structure 2 comprises a first backstop structure shell 5, a cable accommodating cavity 6 with the rear part and the left and right side surfaces both contracting inwards to form an inclined surface is arranged in the first backstop structure shell 5, cable clamping wedge blocks 7 are respectively arranged in the cable accommodating cavity 6 in a sliding mode on the left and right sides, a cable clamping wedge block limiting structure is arranged on the outer side of each cable clamping wedge block 7, and before limiting is relieved, each cable clamping wedge block 7 does not clamp a cable; after the cable clamping wedge limiting structure relieves the limiting, the cable clamping wedge 7 clamps the cable, the cable clamping wedge 7 moves backwards to lock the cable when the cable moves backwards, and the movement of the cable is limited by the inclined planes on the left side and the right side of the rear end of the cable accommodating cavity 6.
According to the invention, the upper surface of the first backstop 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 the cable conveniently; the left side surface and the right side surface of the rear portion of the cable containing cavity 6 both contract inwards to form an inclined surface 8, cable clamping wedge block sliding grooves 9 are formed in the two sides of the rear portion of the cable containing cavity 6 along the front-rear direction respectively, the left cable clamping wedge block 7 and the right cable clamping wedge block 7 are both trapezoidal blocks, the inclined surface 10 of the cable clamping wedge block 7 is matched with the slope of the inclined surface 8 of the rear portion of the cable containing cavity 6, cable clamping wedge block sliding rods 11 are arranged on the inclined surfaces of the two cable clamping wedge blocks 7, the cable clamping wedge blocks 7 are connected with the first non-return structure shell 5 in a sliding mode 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 side and the right side of the first non-return structure shell 5. Arc-shaped cable accommodating grooves 12 are formed in the surface of one side, opposite to the inclined plane, of the cable clamping wedge block 7, the cable accommodating grooves 12 of a larger area can be contacted with cables, the cables are driven to clamp the cable clamping wedge block 7 through backward movement of the cables, and the inclined plane is used for driving the cable clamping wedge block 7 to automatically clamp the cables to stop.
In this embodiment, the cable clamping wedge limiting structure comprises a clamping groove 13 circumferentially arranged on the outer circumferential surface of the cable clamping wedge slide bar 11 along the circumferential direction, clamping plates 14 are arranged on the outer surfaces of the left side and the right side of the first backstop structure shell 5, the middle of each clamping plate 14 is rotatably connected with the first backstop structure shell 5 through a rotating shaft, a right-angle limiting part 37 perpendicular to each clamping plate 14 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 clamping groove 13; the front surfaces of the two cable clamping wedges 7 are respectively provided with a spring mounting column 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 a spring mounting plate 16 at the front end opening of the cable accommodating cavity 6, the cable clamping wedge limiting structures are in a compression state before limiting is relieved, and limiting portions 37 are clamped in the clamping grooves 13. After the cable clamping wedge limiting structure is relieved from limiting, namely the lower end of the clamping plate 14 is driven backwards to enable the limiting part 37 at the upper end of the clamping plate 14 to be separated from the clamping groove 13, at the moment, under the action of the wedge driving spring 35, the cable clamping wedge 7 rapidly moves backwards to clamp the cable, then the cable is driven to move backwards to drive the cable clamping wedge 7, and the inclined surface is used for driving the cable clamping wedge 7 to automatically clamp the cable to stop.
According to the invention, the non-return trigger structure 3 is internally and vertically rotatably provided with the clamping roller capable of rotating in a single direction, when the cable moves backwards, the cable drives one clamping roller to move backwards, and the backwards moving clamping roller drives the limiting structure to relieve the limiting through the trigger device. The non-return trigger structure 3 has three functions: 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 limiting, so that the action of the first backstop structure 2 is realized; and finally, the cable straightening device can also play a certain straightening role in the paying-off process.
In this embodiment, the backstop trigger structure 3 includes a backstop trigger housing 18, a first clamping roller 17 and a second clamping roller 19 are respectively disposed at the upper and lower portions in the backstop trigger housing 18, rotation shafts at both ends of the first clamping roller 17 and the second clamping roller 19 are both fixed to an inner ring of a one-way backstop bearing 20, lower bearing horizontal sliding grooves 21 are horizontally disposed at the lower portions of the left and right housings of the backstop trigger housing 18, lower bearing seats 22 are slidably disposed in the lower bearing horizontal sliding grooves 21, and an outer ring of the one-way backstop bearing 20 mounted on the second clamping roller 19 is fixedly connected to the lower bearing seats 22. The one-way check bearing 20 has the function of limiting one-way rotation, and can realize instant locking when rotating in the reverse direction, and the one-way check bearing 20 is a commercially available product and is not described in detail 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, the cable can not be damaged, and the first clamping roller 17 and the second clamping roller 19 can be used for straightening the cable.
Because the interval between first clamping roller 17 and the second clamping roller 19 and cable external diameter looks adaptation, when the reverse slippage backward motion takes place for the cable, first clamping roller 17 and second clamping roller 19 lock simultaneously, can realize the fastest stopping effect.
In order to ensure that the non-return trigger structure 3 works normally during wire outgoing, a first spring connecting column 23 is arranged at the front end of the outer surface of the lower bearing seat 22, a second spring connecting column 24 is arranged on the outer surface of the non-return trigger shell 18 in front of the lower bearing horizontal sliding groove 21, 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 located 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 on exiting the cable is counteracted by the force of the bearing block drive spring 25. Meanwhile, the reaction speed of the non-return triggering structure 3 can be adjusted by adjusting the elasticity of the bearing seat driving spring 25.
Because the outer ring of the one-way non-return bearing 20 installed on the second clamping roller 19 is fixed with the lower bearing seat 22, and the lower bearing seat 22 is arranged in the lower bearing horizontal sliding groove 21 in a sliding manner, when the cable continuously retreats by overcoming the clamping force of the first clamping roller 17 and the second clamping roller 19 and the elastic force of the bearing seat driving spring 25, the backward moving cable drives the lower bearing seat 22 to move backward, so that the limiting structure is driven to release the limiting, and the action of the first non-return structure 2 is triggered.
In the present invention, the trigger device includes a trigger link 26 horizontally disposed at the rear portion of the outer surface of the lower bearing seat 22, a link driving shaft slot 27 is disposed at the lower portion of the catch plate 14 along the length direction of the catch plate 14, a link driving shaft 28 is disposed in the link driving shaft slot 27, the front end of the trigger link 26 is fixed to the rear portion of the outer surface of the lower bearing seat 22, and the rear end of the trigger link 26 is connected to the lower portion of the catch plate 14 through the link driving shaft 28 and the link driving shaft slot 27. When the lower bearing seat 22 moves backwards, the trigger link 26 drives the lower end of the catch plate 14 to move backwards, so as to drive the upper limit part 37 of the catch plate 14 to move forwards to be separated from the catch groove 13, so that the limit is released, and the first backstop structure 2 acts.
In consideration of the fact that the outer diameters of different cables are different, upper bearing vertical sliding grooves 31 are formed in the upper portion and the lower portion of the shells on the left side and the right side of the non-return trigger shell 18, upper bearing seats 32 are arranged in the upper bearing vertical sliding grooves 31 in a sliding mode, the outer ring of a one-way non-return bearing 20 mounted on a first clamping roller 17 is fixedly connected with the upper bearing seats 32, threaded holes communicated with the upper bearing vertical sliding grooves 31 are formed in 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 improve the versatility of the 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 an up-and-down rotating manner, a cable passing space is arranged between the eccentric balance wheel 34 and the guide roller 4, the length of the front surface of the eccentric balance wheel 34 is greater than that of the rear surface, namely the radius of the front part of the eccentric balance wheel 34 is greater than that of the rear part; when the cable moves forwards, the eccentric balance wheel 34 rotates forwards without limiting the movement of the cable, and when the cable moves backwards, the eccentric balance wheel 34 rotates backwards to abut against the cable and limit the movement of the cable; the first backstop structure 2 can stop the cable sliding backward in the reverse direction by the clamping action of the eccentric balance wheel 34 and the guide roller 4.
In the invention, the second non-return structure 33 comprises a second non-return structure seat, the upper part of a cavity below the second non-return structure seat is provided with an eccentric balance wheel rotating shaft 36, 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 axial center of the axial 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 located below the eccentric balance 34 is smaller than the outer diameter of the wire in a state where the eccentric balance 34 is kept stationary by gravity. 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 forward movement of the cable, and when the cable moves backwards, the front surface of the eccentric balance wheel 34 rotates backwards under the action of gravity, and as the length of the front surface of the eccentric balance wheel 34 is larger than that of the rear surface, 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.
In the invention, the circumferential surfaces of the guide roller 4 and the clamping roller 17 are both provided with arc-shaped cable guide grooves matched with cables along the circumferential direction, so that the cables can be better guided and clamped. The surface of the cable accommodating groove 12 is provided with a flexible insulating rubber layer, so that the friction force between the surface of the cable and the surface of the cable can be effectively increased, and the insulating layer outside the cable cannot be damaged. 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 are all fixed on the base, and the base can be fixed by adopting modes such as splicing, bolt connection 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 are all kept at the same height, so that the cable passes through in a linear state.
In the invention, the time and the sequence of the non-return triggering structure 3, the first non-return structure 2 and the second non-return structure 33 for realizing the non-return function can be realized by adjusting the elastic force of the bearing seat driving spring 25, the speed of releasing the limit by the triggering connecting rod 26 and the size of the eccentric balance wheel 34, so as to achieve the optimal wire releasing non-return 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 triggering structure 3 and the first non-return structure 2 can be manually reset, so that the device can be continuously used. The invention adopts pure mechanical design, can be suitable for various occasions with bad outdoor conditions and has high reliability.
Claims (10)
1. The utility model provides a novel unwrapping wire is contrary device which characterized in that: the cable clamping wedge block type cable fixing device comprises a base, wherein a first guide seat, a first non-return structure, a non-return trigger 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 rotatably arranged in the first guide seat and the second guide seat, the first non-return structure comprises a first non-return structure shell, a cable accommodating cavity is formed in the first non-return structure shell, the left side surface and the right side surface of the rear portion of the first non-return structure shell are inwards contracted to form an inclined surface, cable clamping wedge blocks are respectively arranged in the cable accommodating cavity in a left-right sliding mode, a cable clamping wedge block limiting structure is arranged on the outer side of each cable clamping wedge block, and before limiting is relieved, each cable clamping wedge block does not clamp the cable; after the cable clamping wedge limiting structure relieves the limiting, the cable clamping wedge clamps the cable, the cable clamping wedge moves backwards to lock the cable when the cable moves backwards, and the movement of the cable is limited by the left and right inclined surfaces at the rear end of the cable accommodating cavity; the cable drives one clamping roller to move backwards when the cable moves backwards, and the backwards moving clamping roller drives the cable to clamp the wedge limiting structure through the triggering device to relieve the limiting.
2. The novel wire unwinding backstop device according to claim 1, characterized in that: 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 both contract inwards to form an inclined surface, two sides of the rear part of the cable accommodating cavity are respectively provided with cable clamping wedge block sliding grooves along the front and rear directions, the left cable clamping wedge block and the right cable clamping wedge block are both trapezoidal blocks, the inclined surface of each cable clamping wedge block is matched with the slope of the inclined surface of the rear part of the cable accommodating cavity, cable clamping wedge block sliding rods are arranged on the inclined surfaces of the two cable clamping wedge blocks, each cable clamping wedge block is in sliding connection with the first non-return structure shell through each cable clamping wedge block sliding rod and each cable clamping wedge block sliding groove, 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 plane, of the cable clamping wedge block.
3. The novel wire unwinding backstop device according to claim 2, characterized in that: the cable clamping wedge limiting structure comprises clamping grooves which are circumferentially arranged on the circumferential surface of the outer end 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 of each clamping plate is rotatably connected with the first non-return structure shell through a rotating shaft, a limiting part is vertically arranged at the upper end of each clamping plate, and each limiting part is clamped with each clamping groove; 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 wedge blocks are provided with spring mounting columns, wedge block driving springs are sleeved on the spring mounting columns, the front ends of the wedge block driving springs are connected with spring mounting plates at the front end openings of the cable containing cavities, the limiting structures are in a compressed state before limiting actions are relieved, and limiting parts at the upper ends of the clamping plates are clamped in the clamping grooves.
4. A novel wire unwinding backstop device according to claim 3, characterized in that: the non-return trigger structure comprises a non-return trigger shell, wherein a first clamping roller and a second clamping roller are arranged in the non-return trigger shell from top to bottom, rotating shafts at two ends of the first clamping roller and the second clamping roller are fixed with an inner ring of a one-way non-return bearing, lower bearing horizontal sliding grooves are horizontally arranged at the lower parts of the shell on the left side and the right side of the non-return trigger shell, a lower bearing seat is arranged in each lower bearing horizontal sliding groove in a sliding mode, and an outer ring of the one-way non-return bearing installed on the second clamping roller is fixedly connected with the lower bearing seat.
5. The novel wire unwinding backstop device according to claim 4, characterized in that: 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 backstop 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 wire unwinding backstop device according to claim 5, characterized in that: 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, the 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 wire unwinding backstop device according to claim 6, characterized in that: the upper portion of the shell on the left side and the upper portion of the shell on the right side of the non-return trigger shell are respectively provided with an upper bearing vertical sliding groove, an upper bearing seat is arranged in the upper bearing vertical sliding groove in a sliding mode, an outer ring of a one-way non-return bearing installed on a first clamping roller is fixedly connected with the upper bearing seat, the left side and the right side of the upper surface of the non-return trigger shell are respectively provided with a threaded hole communicated with the upper bearing vertical sliding groove, a threaded rod is arranged in the threaded hole, and the lower end of the threaded rod is rotatably connected with the upper end of the upper bearing seat.
8. The novel wire unwinding backstop device according to claim 2, characterized in that: 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, an eccentric balance wheel and a guide roller are respectively arranged in the second non-return structure in an up-and-down 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 of the eccentric balance wheel, the eccentric balance wheel rotates forwards when the cable moves forwards without limiting the movement of the cable, and the eccentric balance wheel rotates backwards to abut against the cable and limit the movement of the cable when the cable moves backwards.
9. The novel wire unwinding backstop device according to claim 8, characterized in that: the second check structure comprises a second check structure seat, the upper part of a cavity below the second check structure seat is provided with an eccentric balance wheel rotating shaft, 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 and the shaft center of the shaft hole are offset; 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 without limiting the forward movement of the cable, 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 movement of the cable.
10. The novel wire unwinding backstop device according to claim 2, characterized in that: the cable clamping device is characterized in that arc-shaped cable guide grooves matched with cables are formed in the circumferential surfaces of the guide idler wheels and the clamping idler wheels 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 (en) | 2023-11-17 |
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