CN207943811U - Cable tensioning device - Google Patents
Cable tensioning device Download PDFInfo
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- CN207943811U CN207943811U CN201820349402.6U CN201820349402U CN207943811U CN 207943811 U CN207943811 U CN 207943811U CN 201820349402 U CN201820349402 U CN 201820349402U CN 207943811 U CN207943811 U CN 207943811U
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- wheel
- hawser
- driven wheel
- tensioning device
- driving
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Abstract
The utility model provides a kind of cable tensioning device, described device includes driving motor (1), driving wheel (2), driven wheel (4) and stretcher (3), the cable tensioning device also has hawser velocity sensor (6), the hawser velocity sensor (6) connect with measure and control device (7), and the measure and control device (7) is electrically connected with driving motor (1)；The linear velocity of hawser is obtained by hawser velocity sensor (6), measure and control device (7) adjusts the rotating speed of driving motor (1) according to the linear velocity.The cable tensioning device of the utility model is simple in structure, ensures that hawser will not loosen during folding and unfolding on roller with speed feedback by driving wheel (2) and design, the pressure control of driven wheel (4).
Description
【Technical field】
The utility model is related to cable tensioning device, especially a kind of cable tensioning device of air rescue winch.
【Background technology】
Chinese invention patent application CN 201280017378.1 discloses a kind of tension equipment, is used for tensioning and is wound
On to winch drum or from rope or hawser that the winch drum is decontroled, the tension equipment includes wheel, roller and/or band,
The wheel, roller and/or band are arranged such that the rope or hawser can be arranged to and sequentially lean against the wheel, roller
Or take, which is characterized in that the wheel, roller and/or band are arranged, to pass freely through institute from the wherein described rope or hawser
The disengaged position and the wherein described rope or hawser for stating tension equipment stretching, extension are leaned against equipped with described in rotating control assembly
It wheel, roller and/or takes and provides the bonding station displacement of tension to prevent or pull the rope or hawser.
Chinese utility model patent CN discloses a kind of winch cable tensioning device, which includes the
One idler wheel and the second idler wheel, and clamping from winch cable drum derived cable circumscribed mutually by the first idler wheel and the second idler wheel
Rope applies a tensile force to hawser；The first idler wheel and the second idler wheel can do positive rolling with the export or withdrawal of hawser simultaneously
Dynamic or backscrolling.
However, according to the record of CN 201280017378.1 it is found that the tension equipment is suitable only for withdrawing (i.e. in hawser
Be wound into cable drum) when work.The reason is that when hawser no-load is transferred, hawser can loosen on roller.And work as cable
When rope yarn speed changes, due to the control function of not no tensile force, hawser is equally easy to loosen.
【Utility model content】
The purpose of the utility model is to overcome prior art defects, provide a kind of simple in structure, adaptation air rescue winch
The cable tensioning device used.
To achieve the goals above, the utility model provides a kind of cable tensioning device, and described device includes rack and peace
Driving motor 1, driving wheel 2, driven wheel 4 in the rack and stretcher 3, the electricity of the driving wheel 2 and driving motor 1
Arbor is connected and motor 1 driven drives, and driven wheel 4, which is realized with driving wheel 2 by the gear pair 5 of mating setting, to be coordinated, driven
It is cable channel between wheel 4 and the wheel face of driving wheel 2, the stretcher 3 is mechanically connected with driven wheel 4 to adjust hawser to driven
The pressure of wheel 4；Wherein, the cable tensioning device also has hawser velocity sensor 6, the hawser velocity sensor 6 and observing and controlling
Device 7 connects, and the measure and control device 7 is electrically connected with driving motor 1；The linear velocity of hawser is obtained by hawser velocity sensor 6,
Measure and control device 7 adjusts the rotating speed of driving motor 1 according to the linear velocity.
According to a kind of preferred embodiment, the stretcher 3 includes the fixed seat 10 being connected and the arm of force 12 being connected, Gu
There is the rotary shaft 11 for being adjusted by rotation angle, the upper end of the arm of force 12 to be constituted with the rotary shaft 11 of fixed seat 10 in reservation 10
Revolute pair, the other end are connect by bearing with driven wheel 4；Rotation adjusts the phase that the arm of force 12 and fixed seat 10 can be changed in fixed seat 10
To rotation angle, to obtain pressure of the driven wheel 4 to hawser by the arm of force 12.
The free end of the arm of force 12 adjusts and can also be arranged as required to by manually adjusting relative to the angle for fixing 10
Additional automatic control device.
In the utility model, driving motor 1 is servo motor or stepper motor.
Servo motor has the advantage that constant-torque is exported in nominal speed range, and stepper motor has control simpler
Single advantage, but output torque increases with rotating speed and is reduced.
According to a kind of preferred embodiment, the wheel face of driving wheel 2 and driven wheel 4 is the circular arc channel-shaped of indent.Wherein,
The wheel face width of driven wheel 4 is less than the wheel face width of driving wheel 2.
The hawser that the setting of circular arc channel-shaped wheel face and stretcher allows cross section substantially rounded is constantly in tensioning
Between driving wheel and driven wheel, do not slip easily.The smaller feature of the wheel face width of driven wheel 4 makes the wheel face both sides of driven wheel
Wheel edge can be embedded in two side wheel of tensioning driving wheel in.When by stretcher make hawser to driven wheel 4 apply horizontal direction pressure
When, it can be ensured that after last longer use, although the wheel surface wear of driving wheel and driven wheel can lead to the summary of wheel diameter
It is slightly variable small, but hawser can still be clamped between wheel face without influencing working performance by driving wheel 2 and driven wheel 4, to
Increase useful working life.
According to a kind of preferred embodiment, the linear velocity of the driving wheel 2 of the driving of driving motor 1 is made by measure and control device 7
With the speed difference coincidence formula of hawser：Y=kx+b,
Wherein x be linear speed it is poor, y be hawser linear velocity, and down run when be negative value, k=4.5, b=-2.1.
It is confirmed by a large number of experiments, when the speed difference of the linear velocity of driving wheel 2 and hawser meets above-mentioned relation, Neng Goubao
It holds and always exists downward pulling force in hawser and be tensioned.
If the value of k is more than 4.5, increase the mill of wheel face by too fast due to tensioning wheel speed in hawser high-speed cruising
Damage, so as to shorten service life；Enough tensile forces cannot be then generated when k is less than 4.5, hawser is be easy to cause and loosens.And if b
Value be more than -2.1, then can cause when low speed run tensioning wheel speed too fast in hawser, increase the abrasion of wheel face, shortening makes
With the service life, enough tensile forces cannot be generated when b is less than -2.1.
In the utility model, pressure f=6.5Kg between driven wheel 4 and hawser.The pressure is obtained by tensiometer, is
Driven wheel is set to be pulled to power when being detached from hawser.
According to experiment, cable tension F flake down effects in 2-3Kg are preferable.Tensile force is less than the value, then hawser is on roller
Coiling can relax, and influence the density of flake down and the correctness of sequence；If tensile force is excessive, increase between tensioning wheel and hawser
Frictional force, reduce the service life of tensioning wheel.
Because tensioning wheel and hawser are steel, the coefficient of sliding friction about μ=0.4 therebetween, if hawser is to from wheel
Pressure f=6.5Kg, then force of sliding friction, that is, tension F=μ × P=2.5Kg.So by adjusting the arm of force angle of stretcher 3
It can make pressing force f=6.5Kg between driven wheel 4 and hawser
In the present invention, hawser velocity sensor 6 can be realized by the encoder being arranged on cable drum.Ability
Field technique personnel can also realize hawser velocity sensor by other means.
In the utility model, driving wheel 2 and driven wheel 4 are made of hardened steel.
In use, driving motor 1 drives driving wheel 2 to rotate, driving wheel 2 drives driven wheel 4 by gear pair 5, leads at this time
Driving wheel 2 is consistent with 4 rotary speed of driven wheel and direction is opposite.The wheel face of driving wheel 2 and driven wheel 4 is half-arc groove to structure
Forming shape is similar to the space of circular groove as cable channel to clamp hawser, meanwhile, stretcher 3 makes driven wheel by angular adjustment
Apply pressure to hawser, it is ensured that hawser is by without slipping between driving wheel 2 and the wheel face of driven wheel 4, while stretcher 3 carries
The pressure of confession also forms the frictional force for steel cable of holding with a firm grip.
【Description of the drawings】
Fig. 1 is the cable tensioning device structural schematic diagram of the utility model；
1, motor；2, driving wheel；3, stretcher；4, driven wheel；5, gear pair；6, hawser velocity sensor；7, observing and controlling fills
It sets；8, weight；9, hawser；10, fixed seat；11, rotation axis；12, the arm of force.
【Specific implementation mode】
Following embodiment for explaining the technical solution of the utility model without limitation.
Embodiment 1
Cable tensioning device as shown in Figure 1, the driving wheel 2 that driving motor 1 is connected with motor shaft, driving wheel 2 and driven
Wheel 4 realizes cooperation by the gear pair 5 of mating setting, and stretcher 3 includes fixed seat 10 and the arm of force 12 that is connected, in fixed seat 10
With the rotary shaft 11 for being adjusted by rotation angle, the upper end of the arm of force 12 constitutes revolute pair relationship with the rotary shaft 11 of fixed seat 10,
The other end is connect by bearing with driven wheel 4；Rotation adjusts the relative rotation that the arm of force 12 and fixed seat 10 can be changed in fixed seat 10
Angle, to obtain pressure of the driven wheel 4 to hawser by the arm of force 12.
Encoder is set on cable drum as hawser velocity sensor 6, the signal that it is exported is as measure and control device 7
Input data.In addition, measure and control device 7 is electrically connected with driving motor 1, realizes and the rotating speed of motor is controlled.It is passed by hawser speed
Sensor 6 obtains the linear velocity of hawser, and measure and control device 7 adjusts the rotating speed of driving motor 1 according to the linear velocity.
When by fixing relative angle of the angle of seat rotating axis 11 to change the arm of force, by driven wheel to the pressure of hawser
It adjusts to f=6.5Kg.The pressure can be obtained by tensiometer, be the power for instigating driven wheel to be pulled to when being detached from hawser.
Mating fixed gear pair 5 on driving wheel 2 and driven wheel 4 so that driving wheel 2 is identical as 4 rotating speed of driven wheel, turns to phase
Instead.In addition, the wheel face of driving wheel 2 and driven wheel 4 is the circular arc channel-shaped of indent.Wherein, the wheel face width of driven wheel 4 is less than master
The wheel face width of driving wheel 2.The effect of stretcher 3 enables driven wheel 4 and driving wheel 2 close to each other, to compress cable therein
Rope.Such as when cable diameter is 5mm, the wheel face width of tensioning driven wheel 4 is 9.5mm, and the wheel face width of driving wheel 2 is
10mm。
The hawser that the setting of circular arc channel-shaped wheel face and stretcher allows cross section substantially rounded is constantly in tensioning
Between driving wheel and driven wheel, do not slip easily.The smaller feature of the wheel face width of driven wheel 4 makes the wheel face both sides of driving wheel
Wheel edge can be embedded in two side wheel of tensioning driving wheel in.When by stretcher make hawser to driven wheel 4 apply horizontal direction pressure
When, it can be ensured that after last longer use, although the wheel surface wear of driving wheel and driven wheel can lead to the summary of wheel diameter
It is slightly variable small, but hawser can still be clamped between wheel face without influencing working performance by driving wheel 2 and driven wheel 4, to
Increase useful working life.
Make the linear velocity and hawser of the driving wheel 2 of the driving of driving motor 1 by measure and control device 7 and hawser velocity sensor 6
Speed difference coincidence formula：Y=kx+b (x be linear speed it is poor, y be hawser linear velocity, and down run when be negative value, k=4.5, b
=-2.1), wherein the input/output signal of hawser velocity sensor 6 and driving motor 1 is provided by measure and control device 7.
It is confirmed by a large number of experiments, when to meet above-mentioned relation be energy for the linear velocity and the speed difference of hawser of tensioning driving wheel 2
It enough keeps always existing downward pulling force in hawser and being tensioned.
On the one hand the utility model improves the structure of cable tensioning device, changed by driven wheel and driving wheel wheel face structure
It is loosened during folding and unfolding into hawser is avoided；In addition, by experimental verification, when the speed for the linear velocity and hawser for meeting driving wheel
Poor coincidence formula：Y=kx+b (x be linear speed it is poor, y be hawser linear velocity, and down run when be negative value, k=4.5, b=-2.1)
And pressure meets relationship between driven wheel and hawser：When f=6.5Kg, best withdrawing rope effect can be obtained.
Claims (9)
1. cable tensioning device, described device include rack and driving motor (1) in the rack, driving wheel (2),
Driven wheel (4) and stretcher (3), the driving wheel (2) is connected with the motor shaft of driving motor (1) and motor driven (1) drives
Dynamic, driven wheel (4), which is realized with driving wheel (2) by the gear pair (5) of mating setting, to be coordinated, driven wheel (4) and driving wheel (2)
It is cable channel between wheel face, the stretcher (3) is mechanically connected with driven wheel (4) to adjust pressure of the hawser to driven wheel (4)
Power；It is characterized in that the cable tensioning device also have hawser velocity sensor (6), the hawser velocity sensor (6) with
Measure and control device (7) connects, and the measure and control device (7) is electrically connected with driving motor (1)；It is obtained by hawser velocity sensor (6)
The linear velocity of hawser, measure and control device (7) adjust the rotating speed of driving motor (1) according to the linear velocity.
2. cable tensioning device according to claim 1, it is characterised in that the stretcher (3) includes connected fixed seat
(10) with the arm of force (12) that is connected, there is the rotary shaft (11) for being adjusted by rotation angle, the arm of force (12) in fixed seat (10)
The rotary shaft (11) of upper end and fixed seat (10) constitute revolute pair, the other end is connect by bearing with driven wheel (4)；Rotation is adjusted
The relative rotation angle that the arm of force (12) and fixed seat (10) can be changed in fixed seat (10) is saved, it is driven to be obtained by the arm of force (12)
Take turns the pressure of (4) to hawser.
3. cable tensioning device according to claim 1, it is characterised in that driving motor (1) is servo motor or stepping electricity
Machine.
4. cable tensioning device according to claim 1, it is characterised in that the wheel face of driving wheel (2) and driven wheel (4) is equal
For the circular arc channel-shaped of indent.
5. cable tensioning device according to claim 4, it is characterised in that the wheel face width of driven wheel (4) is less than driving wheel
(2) wheel face width.
6. cable tensioning device according to claim 1, it is characterised in that make driving motor (1) by measure and control device (7)
The speed difference coincidence formula of the linear velocity and hawser of the driving wheel (2) of driving：Y=kx+b, wherein x are that linear speed is poor, and y is hawser line
Speed, and down run when be negative value, k=4.5, b=-2.1.
7. cable tensioning device according to claim 1, it is characterised in that make driven wheel (4) and cable by stretcher (3)
Pressure meets relationship between rope：F=6.5Kg.
8. cable tensioning device according to claim 1, it is characterised in that hawser velocity sensor (6) is by being arranged in cable
Encoder on rope drum is realized.
9. cable tensioning device according to claim 1, it is characterised in that driving wheel (2) and driven wheel (4) are hardened steel
It is manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820349402.6U CN207943811U (en) | 2018-03-14 | 2018-03-14 | Cable tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820349402.6U CN207943811U (en) | 2018-03-14 | 2018-03-14 | Cable tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207943811U true CN207943811U (en) | 2018-10-09 |
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ID=63697065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820349402.6U Active CN207943811U (en) | 2018-03-14 | 2018-03-14 | Cable tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207943811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108557671A (en) * | 2018-03-14 | 2018-09-21 | 北京豪仪测控工程有限公司 | Cable tensioning device |
-
2018
- 2018-03-14 CN CN201820349402.6U patent/CN207943811U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108557671A (en) * | 2018-03-14 | 2018-09-21 | 北京豪仪测控工程有限公司 | Cable tensioning device |
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