CN209016566U - A kind of cable pay-off rack - Google Patents
A kind of cable pay-off rack Download PDFInfo
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- CN209016566U CN209016566U CN201821713631.8U CN201821713631U CN209016566U CN 209016566 U CN209016566 U CN 209016566U CN 201821713631 U CN201821713631 U CN 201821713631U CN 209016566 U CN209016566 U CN 209016566U
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- friction pulley
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- friction
- screw
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Abstract
The utility model discloses a kind of cable pay-off racks, including tie down screw, lifting screw, friction pulley, rope, clump weight, rack, rack includes gantry base, top connecting bar, bottom connector rails, lifting screw is fixed on top connecting bar, friction pulley is provided with U-type groove, friction pulley is fixed on bottom connector rails by friction pulley screw rod, after rope one end is fastened in the friction pulley U-type groove and the other end is around connecting clump weight after top connecting bar, a kind of cable pay-off rack provided by the utility model carries out again structure of modification for original pay off rack and designs, change the friction type of former friction belt, increase substantially controlled tension stability degree simultaneously, ensure that the high frequency coaxial radio-frequency cable made has corresponding promotion in electrical property and appearance.
Description
Technical field
The utility model relates to a kind of auxiliary devices of power construction equipment, and in particular to a kind of cable pay-off rack belongs to
The auxiliary device field of power construction equipment.
Background technique
High frequency coaxial radio-frequency cable has very extensive use in the development of the national economy, to make high frequency coaxial radio-frequency cable
With the excellent electric properties such as low, standing wave is small, phase equalization and advantages of good shielding performance be lost simultaneously have high mechanical strength,
The excellent mechanical properties such as flexibility is moderate, the equipment for manufacturing coaxial radio frequency cable need to synchronize improvement, and improve high frequency coaxial
When the radio-frequency cable accuracy of manufacture, the actinobacillus device part of cable machinery is one of key technology, it, which is directly related to, produces electricity
Uniform, the consistency of cable.
Influence of the actinobacillus device stability to cable performance in high frequency coaxial radio-frequency cable manufacturing process:
1. inner conductor stretching resistance, bendability influence: cable inner conductor generally can be divided into solid core conductor and stranded wire conductor, make
The tension force stability of unwrapping wire is crucial during work, and especially stranded wire conductor is more prominent, the bounce of laying tension in process
The outer diameter of process conductor is influenced, the unstable of size will reflect to the stable structure that cable is made.In the tension of cable
Power, bendability etc. are possible to be unsatisfactory for technical requirements, will increase the transmission loss of cable in terms of electric property and voltage is stayed
The rising of Bobbi.
2. insulating properties influences: insulation manufacturing process such as unwrapping wire occurs beating or unstable, and the insulation after processing is tight when occurring
When pine phenomenon outer diameter it is extremely unstable, the gap of current domestic cable and international most advanced level is mainly reflected in insulation processing, when putting
Electric property deteriorates comprehensively or even scraps whole cable when line is extremely unstable.
3. outer conductor quality influences: the processing of outer conductor is sometimes referred to multiple pay off racks, and the unwrapping wire of insulation core wire accounts for mainly
Factor, outer conductor material are coated on insulation core wire, and it can occur in the form of one or more groups of when covering material releasing, this
It needs to keep the identical and continual and steady of tension stability degree during one, therefore the cable of high quality is produced under tight technique guidance
It is most important for adjusting the stabilization of each laying tension.
4. sheath quality influences: similarly carrying out being also required to stable laying tension, the unstable shape of tension when oversheath extrusion
It is either large or small that the oversheath squeezed out under state can generate outer diameter, and pine when cladding is tight, oversheath generates pimple or generation when serious
Loophole phenomenon.
To sum up, the line tension that goes out of unwrapping wire rack has a vital influence to the quality of cable, and cable manufacturing process
The rotation of middle unwrapping wire, the selection of tension, torque, slip power must all operate steadily, stablize the electricity that can just produce high-quality
Cable.
For the pay off rack of current existing cable machinery there are certain defect, most obvious one problem is friction pulley and friction
Unstable in conjunction with can most generate between belt, so that unwrapping wire cable reel generates obvious bounce, these bounces are sometimes periodically jumped
Dynamic, sometimes aperiodicity is beated, and result causes cable performance to be deteriorated.
Utility model content
Technical problem to be solved in the utility model is to overcome the problems, such as of the existing technology, provides a kind of novel cable
Pay off rack, the pay off rack carry out again structure of modification for original pay off rack and design, and change the friction type of former friction belt,
Increase substantially controlled tension stability degree simultaneously, it is ensured that the high frequency coaxial radio-frequency cable of production has in electrical property and appearance
It is corresponding to be promoted.
A kind of cable pay-off rack, including tie down screw 1, lifting screw 2, friction pulley 3, rope 4, clump weight 5, rack 6, it is special
Sign is: the rack 6 includes gantry base, top connecting bar 7, bottom connector rails 8, and the lifting screw 2 is fixed on top
In connecting rod 7, the friction pulley 3 is provided with U-type groove, and the friction pulley 3 is fixed on bottom connector rails 8 by friction pulley screw rod 9
On, after 4 one end of the rope are fastened in the friction pulley U-type groove and the other end is around connecting clump weight after top connecting bar 7
5。
Further, the top connecting bar 7 and bottom connector rails 8 by gantry base axial restraint and not can be rotated,
The lifting screw 2 is fixed perpendicular to top connecting bar 7 by the first limiting device, and the friction pulley screw rod 9 passes through the second limit
Position device is fixed perpendicular to bottom connector rails 8, and the tie down screw 1 is fixed perpendicular to lifting screw 2 by third limiting device.
Further, first limiting device fixes lifting screw 2 and ensures that lifting screw 2 rotates progress only in the axial direction
Elevating movement；The second limiting device fixed friction wheel screw rod 9 simultaneously ensures that friction pulley screw rod 9 is only around 8 turns of bottom connector rails
It is dynamic to move to adjust the height of friction pulley 3；The fixed tie down screw 1 of the third limiting device simultaneously makes tie down screw 1 only in the axial direction
Rotary motion.
Further, the friction pulley U-type groove groove face is smooth, and 4 internal layers of the rope are metal wire and outer layer is polytetrafluoroethyl-ne
Alkene structure, polytetrafluorethylene outer layer face are shiny surface.
The utility model comparison the prior art have it is following the utility model has the advantages that
(1) compared with the tension adjustment structure that traditional friction pulley is combined with friction belt, the utility model overcome by
The processed outside diameter of cable caused by unwrapping wire is unstable has obvious either large or small phenomenon, and the uniformity coefficient of outer diameter significantly takes on a new look,
The stabilization of unwrapping wire shakes entire processing link smaller in cable production, also improves the dimensional accuracy of cable, especially size week
The variation of phase property.
(2) circle of polytetrafluoroethylene (PTFE) used by the utility model rope has good wearability, and coefficient of friction is small, makes
Addition lubricating oil is not needed in, is hardly formed the dirt of lubricating oil generation and is influenced work, balance weight mechanism adjustment side
Just, general operation work can be grasped quickly and skillfully be used.The service life of polytetrafluoroethylene (PTFE) circle rope is also long, and maintenance is very
It is convenient, scale up test has been put into, and progresses by the design of unwrapping wire rack, installation, a whole set of cable production equipment of debugging
Large-scale production.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
In the accompanying drawings:
Fig. 1 is a kind of structural schematic diagram of cable pay-off rack of the utility model；
Fig. 2 is a kind of actual use schematic diagram of cable pay-off rack of the utility model；
Figure label:
1 tie down screw；2 lifting screws；3 friction pulleys；4 ropes；
5 aggravate counterweight；6 racks；7 top connecting bars；8 bottom connector rails；
9 friction pulley screw rods；10 drums.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
A kind of cable pay-off rack, including tie down screw 1, lifting screw 2, friction pulley 3, rope 4, clump weight 5, rack 6, rack
6 include gantry base, top connecting bar 7, bottom connector rails 8, and lifting screw 2 is fixed on top connecting bar 7, and friction pulley 3 is set
It is equipped with U-type groove, friction pulley 3 is fixed on bottom connector rails 8 by friction pulley screw rod 9, and 4 one end of rope are in friction pulley U-type groove
After being fastened and the other end is around clump weight 5 is connected after top connecting bar 7, and top connecting bar 7 and bottom connector rails 8 pass through machine
It frame pedestal axial restraint and not can be rotated, lifting screw 2 is fixed perpendicular to top connecting bar 7 by the first limiting device, friction
It is fixed perpendicular to bottom connector rails 8 by the second limiting device to take turns screw rod 9, tie down screw 1 by third limiting device perpendicular to
Lifting screw 2 is fixed.
Further, the first limiting device fixes lifting screw 2 and ensures that lifting screw 2 rotates only in the axial direction and gone up and down
Movement；Second limiting device fixed friction wheel screw rod 9 and ensure friction pulley screw rod 9 be only around 8 rotational motion of bottom connector rails with
Adjust the height of friction pulley 3；The fixed tie down screw 1 of third limiting device simultaneously makes the rotary motion only in the axial direction of tie down screw 1,
In, the first limiting device, the second limiting device are screw rodb base, and third limiting device is take-up housing.
Further, in order to preferably realize this patent purpose, friction pulley U-type groove groove face is smooth, and 4 internal layers of rope are metal wire
And outer layer is polytetrafluoroethylene (PTFE) structure, polytetrafluorethylene outer layer face is shiny surface.The slot of friction pulley U-type groove have it is wide equal deep and
The bright and clean groove body of lower curtate, friction pulley are directly connected to draw drum, and draw drum and the friction pulley of link are with equal arcs under working condition
It spends uniform rotation (this is at the uniform velocity relative value), the trailing running speed of draw drum i.e. friction pulley running speed, friction pulley
The speed of circular motion and the stabilization for stopping pedaling the outlet and front haulage depending on drum, and draw drum in a free state can not
It at the uniform velocity rotates, it is influenced by the weight, hauling speed and movement inertia of plate, and friction pulley circumferencial direction just generates revolving speed not
Steady and bounce, moment stop gesture phenomenon.
The design principle of the utility model is: friction belt moves it by U-type groove bottom in friction pulley U-type groove
Friction (quantitative) while the not timing friction (variable) at U-type groove edge and friction belt edge, the friction and friction of U-type groove bottom
The superposition of two groups of vectors of not timing friction of belt edge is unlikely to be constant vectorial combination, from the relationship and cunning of tension and torque
The relationship of poor power can be shown that:
When transmitting torque changes, the practical slip power of equipment can also change.
In order to improve the variable quantity for reducing practical slip power, the variable quantity of transmitting torque can only be reduced, to obtain newly
Balance.It is rubbed using polytetrafluoroethylene (PTFE) circle rope with the original friction belt of substitution, the coefficient of friction very little of polytetrafluoroethylene (PTFE), and
The friction band of circle rope form will not generate friction in friction pulley U-type groove with U-type groove edge, and reduction and the stabilization of practical slippage also subtract
Small slip power.
Transmitting torque required for various processes is also different in cable production, so pay off rack need to provide adjustable tension,
To meet different transmitting torques.
F tension N (newton)
M=F ﹒ R R reels of material radius m (rev/min)
﹒ meters of M torque N ﹒ m (Niu)
Relational expression shows that need to obtain different torque can obtain different torque as long as the size for changing tension.Poly- four
The coefficient of friction of vinyl fluoride circle rope is smaller, sets adjustable counterweight so adding in one end of circle rope and is met with obtaining different torque
Cable production needs.Change as long as can be seen that according to formula M=F ﹒ R needs to obtain different transmitting torques under different use conditions
Tension can obtain, and the mode changed is using hoist that this extremely simple method is realized, weight is hung from 0.5~2.5Kg's
Beijing South Maxpower Technology Co. Ltd meets basic use.
The embodiment of one embodiment described above is only used to illustrate the utility model, and not to the utility model
Limitation, anyone skilled in the art can make each in the technical scope for not departing from the utility model exposure
Modification, the change or replacement of kind various kinds, therefore all equivalent similar technical methods should all cover the patent in the utility model
Within protection scope.
Claims (4)
1. a kind of cable pay-off rack, including tie down screw (1), lifting screw (2), friction pulley (3), rope (4), clump weight (5), machine
Frame (6), it is characterised in that: the rack (6) includes gantry base, top connecting bar (7), bottom connector rails (8), the lifting
Screw rod (2) is fixed on top connecting bar (7), and the friction pulley (3) is provided with U-type groove, and the friction pulley (3) passes through friction pulley
Screw rod (9) is fixed on bottom connector rails (8), after described rope (4) one end is fastened in the friction pulley U-type groove and the other end
Clump weight (5) is connected afterwards around top connecting bar (7).
2. a kind of cable pay-off rack according to claim 1, it is characterised in that: the top connecting bar (7) and bottom connect
Extension bar (8) is by gantry base axial restraint and not can be rotated, and the lifting screw (2) is by the first limiting device perpendicular to top
Portion's connecting rod (7) is fixed, and the friction pulley screw rod (9) is fixed perpendicular to bottom connector rails (8) by the second limiting device, described
Tie down screw (1) is fixed perpendicular to lifting screw (2) by third limiting device.
3. a kind of cable pay-off rack according to claim 2, it is characterised in that: the fixed lifting spiral shell of first limiting device
Bar (2) simultaneously ensures that lifting screw (2) rotates progress elevating movement only in the axial direction；The second limiting device fixed friction wheel screw rod
(9) and ensure friction pulley screw rod (9) for the only height around bottom connector rails (8) rotational motion to adjust friction pulley (3)；Described
Three limiting devices fixed tie down screw (1) simultaneously make tie down screw (1) rotary motion only in the axial direction.
4. a kind of cable pay-off rack according to claim 1 or 2 or 3, it is characterised in that: the friction pulley U-type groove groove face
Smooth, described rope (4) internal layer is metal wire and outer layer is polytetrafluoroethylene (PTFE) structure, and polytetrafluorethylene outer layer face is shiny surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713631.8U CN209016566U (en) | 2018-10-23 | 2018-10-23 | A kind of cable pay-off rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713631.8U CN209016566U (en) | 2018-10-23 | 2018-10-23 | A kind of cable pay-off rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209016566U true CN209016566U (en) | 2019-06-21 |
Family
ID=66839465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821713631.8U Active CN209016566U (en) | 2018-10-23 | 2018-10-23 | A kind of cable pay-off rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209016566U (en) |
-
2018
- 2018-10-23 CN CN201821713631.8U patent/CN209016566U/en active Active
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