CN105540471B - A kind of steel wire rope pretension afterburner system - Google Patents
A kind of steel wire rope pretension afterburner system Download PDFInfo
- Publication number
- CN105540471B CN105540471B CN201610105789.6A CN201610105789A CN105540471B CN 105540471 B CN105540471 B CN 105540471B CN 201610105789 A CN201610105789 A CN 201610105789A CN 105540471 B CN105540471 B CN 105540471B
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- Prior art keywords
- brake
- brake sheave
- steel wire
- group
- wire rope
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/40—Control devices
- B66D1/42—Control devices non-automatic
- B66D1/46—Control devices non-automatic electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
- B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
Abstract
The present invention discloses a kind of steel wire rope pretension afterburner system, and it includes guide wheel group, the first brake sheave group, force measuring machine and controller；Guide wheel group includes being oriented to wheel carrier and two directive wheels, and Wirerope reeving gap is provided between two directive wheels；First brake sheave group includes pulley yoke and more than 1 brake sheave, and each brake sheave includes rotatable outer wheel hub, and outer wheel hub periphery is provided with grooving；Brake sheave includes the control for brake input of connection controller；Force measuring machine includes support and pulley, and pressure sensor is installed below support；The signal output end connection controller of pressure sensor；Guide wheel group, the first brake sheave group and force measuring machine are set gradually, so that steel wire rope can pass through from the Wirerope reeving gap of guide wheel group first, the brake sheave in brake sheave group is then passed around, then presses through the pulley in force measuring machine, is finally entangled in elevator.The invention can ensure that steel wire rope neatly closely can be wrapped on elevator, reduces and worn between restricting, extend the service life of steel wire rope.
Description
Technical field
The present invention relates to steel wire rope preload Technique field in crane hoisting operation, particularly a kind of steel wire rope pretension reinforcing
System.
Background technology
During crane job, steel wire rope needs to keep certain tension force during elevator is entangled to, to ensure that steel wire rope exists
It is neat in elevator, closely wind.This process for being reinforced to steel wire rope and being entangled to elevator is the work of steel wire rope pretension.
Wirerope-winding quality will be substantially improved in steel wire rope pretension, reduce the abrasion between steel wire rope, prevent flash stitch, rope skipping etc.
Bad phenomenon, final boom hoist cable service life.
The bad phenomenons such as disorder cable, rope occur in steel wire rope without pretension in use, gently then reduce steel wire rope
Service life, heavy then cause steel wire rope or reel to damage, serious threat Hoisting Security.
In the prior art, have using disk brake or magnetic powder brake as moment of resistance source, and then realize steel wire rope
Pretension, but it still suffers from following defect.
Disk brake has the following disadvantages applied to pretightning force afterburner system：
1. disk brake can produce substantial amounts of heat energy when carrying out and braking for a long time, high brake disc and braking are lifted rapidly
The temperature of block.The coefficient of friction between brake disc and brake block will be reduced after temperature rise, cause braking moment to reduce, make pretightning force
It is uneven；
2. great-moment brake uses hydraulic braking control mode, need to adjust hydraulic system pressure could regulating brake force
Square, control is inconvenient and response is slow；
Brake block is set to wear rapidly 3. brake works long hours, maintenance period is short；
4. disk brake using, maintenance it is improper easily cause eccentric wear, the failure such as scream.
Magnetic powder brake has the following disadvantages applied to pretightning force afterburner system：
1. magnetic powder brake allowable rotating speed is up to 3000 rpms, and maximum speed can not provide high resistant torque, must be another
It is outer to select reductor, make system complex, it is huge, and be not easy to safeguard；
2. magnetic powder brake heating is more concentrated, radiating will cause magnetic service life reduction or even cause brake card not in time
Extremely.
The content of the invention
The technical problem to be solved in the present invention is：Using brake sheave so that steel wire rope energy during zero load is entangled to elevator
Certain tension force is enough kept, so as to ensure that steel wire rope neatly closely can be wrapped on elevator, improves wirerope-winding quality,
Reduce and worn between restricting, the final service life for extending steel wire rope.
The technical scheme that the present invention takes is specially：A kind of steel wire rope pretension afterburner system, including guide wheel group, the first system
Running block, force measuring machine, the second brake sheave group and controller；Wherein：
Guide wheel group includes being oriented to wheel carrier and two directive wheels, and the rotational installation that two directive wheel wheel shafts are parallel to each other is in leading
To on wheel carrier, and Wirerope reeving gap is provided between two directive wheels；
First brake sheave group and the second brake sheave group are all installed above on pulley yoke including pulley yoke and 1 respectively
Brake sheave, each brake sheave includes rotatable outer wheel hub, and outer wheel hub periphery is provided with grooving；Brake sheave includes braking and controlled
Input processed, the control for brake input connect controller；First brake sheave group and the second brake sheave group are axially mutual
It is arranged in parallel,
Force measuring machine includes support, is rotatablely installed in the pulley on support, and is installed on the pressure sensing below support
Device；The signal output end connection controller of pressure sensor；
Guide wheel group, the first brake sheave group, force measuring machine and the second brake sheave group are set gradually, and first pulley group
In brake sheave and force measuring machine in pulley be axially parallel to each other so that steel wire rope can be first from the steel wire rope of guide wheel group
Wire rope handling passes through in gap, the brake sheave being then wrapped around in the first brake sheave group and the second brake sheave group, while presses through survey
Pulley in force mechanisms.
In the present invention, brake sheave can use prior art Related product, when steel wire rope passes through in the race of brake sheave
Out-of-date, brake sheave can provide a braking square, i.e. resistance, and the resistance will increase steel wire tensioning power.In use, pass through
Control the braking moment of brake sheave, you can reach the purpose of regulation steel wire tensioning power.And the setting of force measuring machine so that steel
While cord presses through pulley, pressure effect can be produced to the pressure sensor under support, this pressure can be according to steel wire tensioning
The change of power and change, therefore, the real-time tensile force of steel wire rope can be drawn according to the pressure value that pressure sensor exports, and be controlled
Device goes to control brake sheave again according to the real-time tensile force of steel wire rope, that is, realizes the closed-loop control of steel wire rope pretension reinforcing, can
Effectively improve wirerope-winding quality.
Preferably, the first brake sheave group and the second brake sheave group include more than 2 brake sheaves respectively, described 2
It is to be coaxially disposed between above brake sheave.Brake sheave quantity in one brake sheave group is set depending on required braking moment,
Because the braking moment that single brake sheave provides is limited, when it can not meet the pretension requirement of steel wire rope, then need to set multiple
Brake sheave, specifically it can go out rope tension by boom hoist cable by the way of applying step by step.
In order to facilitate staff's knowing in time to the real-time tensile force of steel wire rope, present invention additionally comprises display module, shows
Show the input connection controller of module.Controller can send the real-time tensioning force data of acquisition to display module to show.
Display module can use prior art.
Further, present invention additionally comprises radiator；In first brake sheave group and the second brake sheave group, braking is slided
Be provided with coolant circulation passage in the wheel shaft of wheel, axle stub is provided with coolant inlet and cooling liquid outlet, cooling liquid outlet and
Entrance is connected with radiator.Cooling liquid outlet and entrance can also be connected with outer loop pump.Brake sheave meeting in braking procedure
Heat is produced, coolant can prevent heat aggregation from being had an impact to braking ability.
Preferably, force measuring machine also includes fixable supporting leg, pedestal lower end side rotation connection supporting leg, opposite side installation
Pressure sensor.When steel wire rope presses through pulley, support will rotate on supporting leg, so as to apply pressure to pressure sensor, when
When steel wire tensioning power changes, passing to the pressure of pressure sensor can also change.The fixed form of support can also use
Other prior arts, Ce Li mechanisms can be avoided entirely to offset, and not influence acquisition of the pressure sensor to pressure, you can.
Preferably, the brake sheave that uses of the present invention includes sequentially coaxially setting from inside to outside inner wheel hub, annular yoke
And outer wheel hub；
It is to be fixedly connected between inner wheel hub and annular yoke；
The periphery of annular yoke is provided with coil groove, is provided with magnet exciting coil in coil groove, the power connector end of magnet exciting coil is
For the control for brake input of brake sheave；Magnetic is provided between annular yoke and outer wheel hub and houses gap, magnetic houses gap
In be provided with magnetic；Magnetic is accommodating to be provided with closed guard between gap and coil groove；
The both sides of annular yoke, it is rotatablely connected respectively by clutch shaft bearing and second bearing between inner wheel hub and outer wheel hub；
The periphery of outer wheel hub is provided with steel wire rope groove.
In use, above-mentioned multiple brake sheaves can be coaxially connected by the wheel shaft of brake sheave group and be fixed on pulley yoke
On.During work, the total remains stationary of inner wheel hub, outer wheel hub is connected with inner wheel hub by bearing so that outer wheel hub can be around inner wheel hub certainly
By rotating.Magnet exciting coil can be drawn by wire, to provide work action current, the exit of the magnet exciting coil is to brake
The control for brake input of pulley.Magnetic field is produced in annular yoke after magnet exciting coil is powered, in the presence of the magnetic field,
Magnetic will move towards to form magnetic chain according to the magnetic line of force, and when outer wheel hub rotates relative to inner wheel hub, magnetic chain is by outer wheel hub
Surface and the outer surface of inner wheel hub produce frictional resistance, prevent outer wheel hub from rotating, so as to form braking moment.In addition, work as foreign steamer
When hub overcomes the braking moment to rotate, it will shearing magnetic chain, cause the friction inside magnetic chain, strengthen braking moment, lifted
Braking effect.When no current in magnet exciting coil, there is no magnetic field in annular yoke, magnetic can not form magnetic chain, and magnetic is in
Loose condition (of surface), can not produce braking moment, and outer wheel hub is free to rotate.Therefore only need using in prior art control magnet exciting coil
Size of current or whether there is, you can as needed in real time control braking moment size, meet requirement of engineering.
In above-mentioned brake sheave, side shield is additionally provided with respectively between annular yoke both sides and clutch shaft bearing and second bearing,
The top of the side shield extends to outer wheel hub bottom.The setting of side shield can prevent magnetic leak to interior outer wheel hub and bearing it
Between, cause mechanism blockage.
Beneficial effects of the present invention are：By using brake sheave so that steel wire rope can during zero load is entangled to elevator
Certain tension force is kept, so as to ensure that steel wire rope neatly closely can be wrapped on elevator, improves wirerope-winding quality, drop
Worn between low rope, the final service life for extending steel wire rope.The present invention coordinates Ce Li mechanisms and controller to cause the present invention simultaneously
The closed-loop control of steel wire tensioning power can be realized, braking moment real-time, tunable and control mode is simple, response speed is very fast, dimension
Shield is convenient.Structural volume of the present invention is smaller simultaneously, and running noises are relatively low.
Brief description of the drawings
Fig. 1 show present system structural representation；
Fig. 2 show brake sheave group wiring structural representation；
Fig. 3 show wheel design schematic diagram；
Fig. 4 show the first brake sheave group or the second brake sheave group structural representation；
Fig. 5 show force measuring machine structural representation；
Fig. 6 show a kind of brake sheave structure assembling schematic diagram of embodiment；
Fig. 7 show the local axial section structural representation of Fig. 6 brake sheaves.
Embodiment
Further described below in conjunction with the drawings and specific embodiments.
As shown in figure 1, the steel wire rope pretension afterburner system of the present invention, including guide wheel group 1, the first brake sheave group 2, survey
Force mechanisms 3, the second brake sheave group 5 and controller 4；Wherein：
Guide wheel group 1 includes being oriented to wheel carrier 11 and two directive wheels 12, the rotation that two wheel shafts of directive wheel 12 are parallel to each other
It is installed on and is oriented on wheel carrier 11, and Wirerope reeving gap 13 is provided between two directive wheels 12；
First brake sheave group 2 and the second brake sheave group 5 all include pulley yoke 21 and are installed on pulley yoke 21 respectively
More than 1 brake sheave 22, each brake sheave 22 includes rotatable outer wheel hub 23, and the periphery of outer wheel hub 23 is provided with grooving 24；
Brake sheave 22 includes control for brake input, and the control for brake input connects controller 4；First brake sheave group 2 with
Second brake sheave group 5 is axially parallel to each other；
Force measuring machine 3 includes support 31, is rotatablely installed in the pulley 32 on support 31, and is installed on the lower section of support 31
Pressure sensor 33；The signal output end connection controller 4 of pressure sensor 33；
Guide wheel group 1, the first brake sheave group 2 and force measuring machine 3 are set gradually, and the braking in first pulley group 2 is slided
Wheel 22 is axially parallel to each other with the pulley 32 in Ce Li mechanisms 3 so that steel wire rope can be first from the Wirerope reeving of guide wheel group 1
Pass through, the brake sheave 22 being then wrapped around in the first brake sheave group 2 and the second brake sheave group 5, press through simultaneously in gap 13
The pulley 32 in force measuring machine 3 between two-system running block, is finally entangled in elevator.Steel wire rope in the first brake sheave group and
Circular mode in second brake sheave group refer to shown in Fig. 2.
In the present invention, brake sheave can use prior art Related product, when steel wire rope passes through in the race of brake sheave
Out-of-date, brake sheave can provide a braking square, i.e. resistance, and the resistance will increase steel wire tensioning power.In use, pass through
Control the braking moment of brake sheave, you can reach the purpose of regulation steel wire tensioning power.And the setting of force measuring machine so that steel
While cord presses through pulley, pressure effect can be produced to the pressure sensor under support, this pressure can be according to steel wire tensioning
The change of power and change, therefore, the real-time tensile force of steel wire rope can be drawn according to the pressure value that pressure sensor exports, and be controlled
Device goes to control brake sheave again according to the real-time tensile force of steel wire rope, that is, realizes the closed-loop control of steel wire rope pretension reinforcing, can
Effectively improve wirerope-winding quality.
Embodiment
As shown in figure 1, the second brake sheave group 5 is identical with the structure composition of the first brake sheave group 2 in the present embodiment, only make
Movable pulley number needs to have differences according to factors such as rope outlet direction, braking moment requirements.First brake sheave group 2 and the second system
Running block 5 includes more than 2 brake sheaves respectively, is to be coaxially disposed between more than 2 brake sheaves.One braking is slided
Brake sheave quantity in wheel group is set depending on required braking moment, because the braking moment that single brake sheave provides is limited, when
It can not meet the pretension requirement of steel wire rope, then need to set multiple brake sheaves, can specifically be lifted by the way of applying step by step
Steel wire rope goes out rope tension.
In order to facilitate staff's knowing in time to the real-time tensile force of steel wire rope, the also settable display module of the present invention,
The input connection controller of display module.Controller can be sent the real-time tensioning force data of acquisition to display module with aobvious
Show.Display module can use prior art.
Further, the also settable radiator 6 of the present invention, as shown in Figure 1；First brake sheave group and the second braking are slided
In wheel group, coolant circulation passage is provided with the wheel shaft of brake sheave, axle stub is provided with coolant inlet 25 and coolant goes out
Mouth 26, cooling liquid outlet and entrance are connected with radiator 6.Cooling liquid outlet and entrance can also be connected with outer loop pump.Braking
Pulley can produce heat in braking procedure, and coolant can prevent heat aggregation from being had an impact to braking ability.
Such as Fig. 4, force measuring machine 3 also includes fixable supporting leg 35, and pulley 32 is rotatablely installed in support by first rotating shaft
On 31；The lower end side of support 31 is rotatablely connected supporting leg 35, opposite side installation pressure sensor 33 by the second rotating shaft 36.Work as steel wire
When rope presses through pulley 32, support 31 will rotate on supporting leg 35, so as to apply pressure to pressure sensor 33, work as steel wire tensioning
When power changes, passing to the pressure of pressure sensor 33 can also change.The fixed form of support can also use other existing
Technology, Ce Li mechanisms can be avoided entirely to offset, and not influence acquisition of the pressure sensor to pressure, you can.
With reference to Fig. 5 and Fig. 6, the brake sheave that the present embodiment uses includes the inner wheel hub sequentially coaxially set from inside to outside
26th, annular yoke 25 and outer wheel hub 23；
It is to be fixedly connected between inner wheel hub 26 and annular yoke 25；
The periphery of annular yoke 25 is provided with coil groove, and magnet exciting coil 27 is provided with coil groove；Annular yoke 25 and outer wheel hub
Magnetic is provided between 23 and houses gap, magnetic houses in gap and is provided with magnetic；Magnetic is accommodating to be provided with envelope between gap and coil groove
Close baffle plate 28；
The both sides of annular yoke 25, are rotatablely connected by bearing 29 respectively between inner wheel hub 26 and outer wheel hub 23.
In use, above-mentioned multiple brake sheaves are coaxially disposed, and it can be connected and fix by the wheel shaft of brake sheave group
In on pulley yoke.During work, the total remains stationary of inner wheel hub, outer wheel hub is connected with inner wheel hub by bearing so that outer wheel hub can be around
Inner wheel hub freely rotates.Magnet exciting coil can be drawn by wire, to provide work action current, the exit of the magnet exciting coil
The as control for brake input of brake sheave.Magnetic field is produced in annular yoke after magnet exciting coil is powered, in the magnetic field
In the presence of, magnetic will move towards to form magnetic chain according to the magnetic line of force, and when outer wheel hub rotates relative to inner wheel hub, magnetic chain will outside
The inner surface of wheel hub and the outer surface of inner wheel hub produce frictional resistance, prevent outer wheel hub from rotating, so as to form braking moment.Separately
Outside, when outer wheel hub overcomes braking moment to rotate, it will shearing magnetic chain, cause the friction inside magnetic chain, strengthen braking
Torque, lift braking effect.When no current in magnet exciting coil, there is no magnetic field in annular yoke, magnetic can not form magnetic chain,
Magnetic is in loose condition (of surface), can not produce braking moment, and outer wheel hub is free to rotate.Therefore only need to encourage using prior art control
Size of current in magnetic coil whether there is, you can the size of control braking moment in real time as needed, meets requirement of engineering.
In above-mentioned brake sheave, side block is additionally provided with respectively between the annular both sides of yoke 25 and clutch shaft bearing and second bearing 29
Plate 282, the top of side shield 282 extend to the bottom of outer wheel hub 23.
The controller of the present invention can possess data sampling and processing, display and control function, specifically：
1. pretightning force real-time display：Pretightning force coherent signal is gathered using pressure sensor, after treatment can be by steel wire
Rope tensioning force data real-time display；
2. pretightning force controls in real time：Pretightning force control can be achieved to automatically control and control two kinds of control methods, and hand manually
It is dynamic and automatic changeable：
A. during automatic control mode, system can be run with default pretension force parameter, and automatic according to actual pretension force value
Brake sheave is controlled, is compensated due to pretension fluctuation caused by external cause, pretightning force is kept stable；
When b. controlling manually, control requirement can be sent by the entity button that corresponding different controls require, then controller will
It is controlled according to response control requirement, without automatically adjusting；
3. system security monitoring：
A. brake sheave rotating speed and steel wire rope rope speed are contrasted, pretightning force requirement is reduced when inconsistent automatically, avoids due to steel
Relative motion is produced between cord and brake sheave and causes steel wire rope or brake sheave to wear；
B. pretightning force numerical value is monitored, is taken appropriate measures when actual pretightning force is more than highest limit value, it is ensured that steel wire rope
And the safety of rope woolding system；
C. circulation pump power can be adjusted by setting temperature sensor to read coolant temperature, and according to the temperature change,
Guarantee system good heat radiating.
The system of the present invention is in use, the course of work is as follows：
Steel wire rope is extracted out from wooden reel first, first passed through between guide wheel group, then around the first brake sheave group
With the second brake sheave group, while force measuring structure is pressed through, last steel wire rope is connected after passing pretension afterburner system with elevator；
Then according to steel wire rope parameter and pretightning force requirement, associated control parameters are set in the controller, and then system is opened
Begin to run control；
Start elevator, by wirerope-winding in elevator.In the process, steel wire rope will be wrapped in after being applied in pretightning force
On elevator.
During applied on hoisting machinery, the arm head assembly pulley on the assembly pulley replacement crane of the present invention can be used.Work as sky
When hook lifting needs pretension, corresponding switch can be opened in control cabinl pulpit, to open pretension afterburner system.Add when not needing pretension
During power, corresponding switch is closed.
The present invention causes steel wire rope to be entangled to that can keep certain during elevator in zero load by using brake sheave
Power, so as to ensure that steel wire rope neatly closely can be wrapped on elevator, wirerope-winding quality is improved, reduces and is worn between restricting,
The final service life for extending steel wire rope.The present invention coordinates Ce Li mechanisms and controller to allow the invention to realize steel wire simultaneously
Restrict the closed-loop control of tensile force, braking moment real-time, tunable and control mode is simple, response speed is very fast, easy to maintenance.Simultaneously
Structural volume of the present invention is smaller, and running noises are relatively low.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of steel wire rope pretension afterburner system, it is characterized in that, including guide wheel group, the first brake sheave group, force measuring machine,
Two brake sheave groups and controller；Wherein：
Guide wheel group includes being oriented to wheel carrier and two directive wheels, and the rotational installation that two directive wheel wheel shafts are parallel to each other is in directive wheel
On frame, and Wirerope reeving gap is provided between two directive wheels；
First brake sheave group and the second brake sheave group are all installed above in the system on pulley yoke including pulley yoke and 1 respectively
Movable pulley, each brake sheave include rotatable outer wheel hub, and outer wheel hub periphery is provided with grooving；It is defeated that brake sheave includes control for brake
Enter end, the control for brake input connects controller；First brake sheave group and the second brake sheave group are axially parallel to each other
Set,
Force measuring machine includes support, is rotatablely installed in the pulley on support, and is installed on the pressure sensor below support；Pressure
The signal output end connection controller of force snesor；
Guide wheel group, the first brake sheave group, force measuring machine and the second brake sheave group are set gradually, and in first pulley group
Brake sheave is axially parallel to each other with the pulley in force measuring machine so that steel wire rope can be first from the Wirerope reeving of guide wheel group
Passed through in gap, the brake sheave being then wrapped around in the first brake sheave group and the second brake sheave group, while press through force measuring machine
Pulley in structure.
2. steel wire rope pretension afterburner system according to claim 1, it is characterized in that, in addition to radiator；First braking is slided
In wheel group and the second brake sheave group, coolant circulation passage is provided with the wheel shaft of brake sheave, axle stub is provided with coolant
Entrance and cooling liquid outlet, cooling liquid outlet and entrance are connected with radiator.
3. steel wire rope pretension afterburner system according to claim 1, it is characterized in that, the first brake sheave group and the second braking
Assembly pulley includes more than 2 brake sheaves respectively, is to be coaxially disposed between more than 2 brake sheaves.
4. steel wire rope pretension afterburner system according to claim 1, it is characterized in that, in addition to display module, display module
Input connection controller.
5. the steel wire rope pretension afterburner system according to any one of Claims 1-4, it is characterized in that, force measuring machine also includes
Fixable supporting leg, pedestal lower end side rotation connection supporting leg, opposite side installation pressure sensor.
6. the steel wire rope pretension afterburner system according to any one of Claims 1-4, it is characterized in that, brake sheave include from
Inner wheel hub, annular yoke and the outer wheel hub sequentially coaxially set from inside to outside；
It is to be fixedly connected between inner wheel hub and annular yoke；
The periphery of annular yoke is provided with coil groove, and magnet exciting coil is provided with coil groove, and the power connector end of magnet exciting coil is to make
The control for brake input of movable pulley；Magnetic is provided between annular yoke and outer wheel hub and houses gap, magnetic houses to be set in gap
There is magnetic；Magnetic is accommodating to be provided with closed guard between gap and coil groove；
The both sides of annular yoke, it is rotatablely connected respectively by clutch shaft bearing and second bearing between inner wheel hub and outer wheel hub.
7. steel wire rope pretension afterburner system according to claim 6, it is characterized in that, annular yoke both sides and clutch shaft bearing and
Side shield is additionally provided between second bearing respectively, the top of the side shield extends to outer wheel hub bottom.
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| CN201610105789.6A CN105540471B (en) | 2016-02-26 | 2016-02-26 | A kind of steel wire rope pretension afterburner system |
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| CN114455496B (en) * | 2021-12-28 | 2023-07-07 | 临湘市五鑫工程塑料有限公司 | Pulley block used on automatic feeding conveyor |
| CN116534754B (en) * | 2023-07-06 | 2023-11-21 | 成都久和至诚智能装备有限责任公司 | Steel wire rope pre-tightening system and method for crane working mechanism |
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| JP2007191233A (en) * | 2006-01-17 | 2007-08-02 | Tesac Wirerope Co Ltd | Wire rope tension device |
| CN102040173A (en) * | 2011-01-20 | 2011-05-04 | 长沙中联重工科技发展股份有限公司 | Wire rope pretightening device |
| KR101301986B1 (en) * | 2011-09-02 | 2013-09-02 | 삼성중공업 주식회사 | Tensioning device for wire rope reeving |
| CN202687861U (en) * | 2012-07-11 | 2013-01-23 | 宁波联达绞盘有限公司 | Winch brake device |
| CN105143092A (en) * | 2013-02-07 | 2015-12-09 | 麦格雷戈普斯恩斯股份有限公司 | Traction winch |
| CN203922558U (en) * | 2014-07-02 | 2014-11-05 | 抚顺永茂建筑机械有限公司 | Reel steel wire ropes pre-tightening apparatus |
| CN105060151A (en) * | 2015-07-15 | 2015-11-18 | 中国石油集团西部钻探工程有限公司 | Auxiliary rope coiling device for steel wire rope |
| CN205634722U (en) * | 2016-02-26 | 2016-10-12 | 徐工集团工程机械股份有限公司 | Afterburning system of wire rope pretension |
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| CN105540471A (en) | 2016-05-04 |
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