CN109132873A - The restoration methods of nacelle protective device, crane and nacelle protective device - Google Patents
The restoration methods of nacelle protective device, crane and nacelle protective device Download PDFInfo
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- CN109132873A CN109132873A CN201811255052.8A CN201811255052A CN109132873A CN 109132873 A CN109132873 A CN 109132873A CN 201811255052 A CN201811255052 A CN 201811255052A CN 109132873 A CN109132873 A CN 109132873A
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- friction member
- mobile
- protective device
- fastener
- nacelle
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- 230000001681 protective effect Effects 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 19
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- 238000010586 diagram Methods 0.000 description 16
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- 238000005516 engineering process Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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- 238000011084 recovery Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
Abstract
The present invention provides the restoration methods of a kind of nacelle protective device, crane and nacelle protective device; it is related to protective device for crane technical field; nacelle protective device provided by the invention includes fixed friction part, mobile friction member and at least one fastener, in which: fixed friction part is for installing to crane；One end of mobile friction member is connect by each fastener with fixed friction part, and the other end is for bearing the pressure that weight is given；Each fastener is used to adjust the frictional force between fixed friction part and mobile friction member.Nacelle protective device structure provided by the invention is simple, at low cost; continued power, pressure maintaining are not needed; the size of frictional force can the pretightning force by fastener or the quantity by fastener be adjusted; and after nacelle generation; current state can be maintained to overhaul; it will not arbitrarily move, practicability is stronger.
Description
Technical field
The present invention relates to protective device for crane technical field, more particularly, to a kind of nacelle protective device, crane and
The restoration methods of nacelle protective device.
Background technique
Nacelle is a kind of special operation condition of crane.Usually occur when suspender high speed rises by barrier stop or extension
Firmly.At this time due to the huge inertia of original transmission mechanism, the power of wirerope is caused to increased dramatically, further, nacelle load will
It can do a lot of damage to structure and mechanism, or even cause irremediable loss.
The nacelle protective device used on existing container crane mainly has several forms:
Mode one, by the way of hydraulic cylinder, in the manner, hydraulic cylinder is connected by certain form with pulley.
It is motionless to be maintained at certain position under the conditions of nominal situation for pulley.When pulley bear power increase when, oil cylinder working-pressure value also with
Increase.When being more than setting value, by the effect of overflow valve, oil cylinder setting in motion absorbs energy, so that the power of wirerope is no longer
It continues growing.Container crane using the nacelle protective device in aforesaid way one need to cooperate hydraulic mechanism carry out using,
Structure is more complicated, moreover, because hydraulic mechanism manufacturing cost is high, later maintenance cost is also higher.In addition, in order to protect
The oil cylinder position of card under normal circumstances, needs continued power or pressure maintaining, is unfavorable for energy conservation.
Mode two, using the viscous damping of damper as working media, but viscous damping is as a kind of special media,
Its cost is very high.Secondly, the trigger force of the nacelle using aforesaid way, be permanently fixed after factory it is non-adjustable,
And due to the auto restore facility of damper, before maintenance personal's debugging, once external force disappears, damper is with regard to uncontrolled
System springs back to home position.Maintenance personnel can not accurate evaluation equipment damage situations.This in actual operation, will lead to can not
The risk of control.
Mode three, in the way of metallic material local fracture etc., as disposable nacelle protective device.This device is only fitted
For small lifting equipment.Due to material local fracture, recuperation expends new material and artificial.So being not suitable for modern big
Type equipment.
Therefore, how nacelle protective device, crane and the nacelle that a kind of structure is simple, at low cost, controllability is strong are provided
The restoration methods of protective device are one of those skilled in the art's technical problems to be solved.
Summary of the invention
The purpose of the present invention is to provide the restoration methods of a kind of nacelle protective device, crane and nacelle protective device,
The technical issues of structure is complicated to solve nacelle protective device in the prior art, at high cost, poor controllability.
In a first aspect, the present invention provides a kind of nacelle protective device, including fixed friction part, mobile friction member and at least one
A fastener, in which:
The fixed friction part is for installing to crane；
One end of the mobile friction member is connect by each fastener with the fixed friction part, and the other end is used for
Bear the pressure that weight is given；
Each fastener is used to adjust the frictional force between the fixed friction part and the mobile friction member.
Further, the fixed friction part is slidably connected by each fastener and the mobile friction member, institute
Fixed friction part is stated equipped with the first slot for inserting each fastener, the mobile friction member is equipped with for inserting
Fill the second slot of each fastener.
Further, the fixed friction part includes the left clamp arm and right clamp arm being oppositely arranged, the left clamp arm and described
Be equipped with first slot in right clamp arm, the mobile friction member by each fastener be located in the left clamp arm and
Between the right clamp arm.
Further, the fastener includes bolt, nut and elastic component, in which:
The bolt passes through the fixed friction part, and/or, the bolt passes through the mobile friction member；
The nut is sheathed on the bolt；
The elastic component is sheathed on the bolt, described elastic component one end and the nut offset or with the bolt
Head offset, the other end and the fixed friction part offset to compensate the gap between the nut and the fixed friction part
And provide pretightning force or the other end and the mobile friction member offsets to compensate between the nut and the mobile friction member
Gap and pretightning force is provided.
Further, when the fastener is one:
The mobile friction member is the transmission shaft for adjusting and locking crane middle pulley position, the transmission shaft
Including the first axle body and the first friction member being sheathed on outside the first axle body；
The fixed friction part is the gear on the crane in reduction gearbox, and the gear passes through the fastener and institute
The first axle body transmission connection is stated, and the end face of the gear offsets with first friction member.
Further, when the fastener is one:
The mobile friction member is the power output shaft for adjusting and locking the motor of crane middle pulley position
The power output shaft includes the second axle body and the second friction member for being sheathed on outside the second axle body；
The fixed friction part be the motor shell or the motor electromagnetic brake, the shell of the motor or
The electromagnetic brake of the motor is connect by the fastener with the pto shaft drive, and the shell of the motor or
The end face of the electromagnetic brake of the motor offsets with second friction member.
Further, the fixed friction part includes the first adjustment section, and the thickness of the first adjustment section is less than or greater than
The thickness at other positions on the fixed friction part；
Or the mobile friction member includes the first adjustment section, the thickness of the first adjustment section is less than or greater than the shifting
The thickness at other positions on dynamic friction piece.
Further, the fixed friction part includes second adjustment section, and the width of the second adjustment section is less than or greater than
The width at other positions on the fixed friction part；
Or the mobile friction member includes second adjustment section, the width of the second adjustment section is less than or greater than the shifting
The width at other positions on dynamic friction piece.
Second aspect, the present invention also provides a kind of cranes, protect dress including the nacelle any in first aspect
It sets.
The third aspect, the present invention also provides a kind of restoration methods of nacelle protective device, use any in first aspect
Nacelle protective device described in kind, comprising:
Give the mobile friction member one pulling force, the mobile friction member is mobile relative to the fixed friction part
To home position.
Further, before giving one pulling force of the mobile friction member, further includes: remove multiple fasteners；
After the mobile friction member is moved to home position relative to the fixed friction part, then by multiple described tight
Firmware clamps the fixed friction part and the mobile friction member.
The restoration methods of nacelle protective device provided by the invention, crane and nacelle protective device can generate following beneficial
Effect:
When stating nacelle protective device in use, under normal load, due to multiple fasteners give fixed friction part and
Mobile one clamping force of friction member, mobile friction member will not slide under the action of this clamping force relative to fixed friction part.
When nacelle occurs, the pressure that weight gives mobile friction member is more than preset value, this pressure can overcome fixed friction part
The effect of nacelle protection is realized so that mobile friction member is mobile relative to fixed friction part with the frictional force of mobile friction member.Its
In, the size of frictional force can be adjusted by the pretightning force of fastener between fixed friction part and mobile friction member, can also
To be adjusted by the quantity of fastener.
The nacelle protective device that first aspect present invention provides is easy to operate, and the nacelle of crane is realized by frictional force
Protection, in addition, during sliding, effectively protecting the steel for pulling weight since force of sliding friction is less than stiction
Cord stress does not exceed the critical value of setting.For compared with the existing technology, structure is simple, at low cost, does not need to continue
Power supply, pressure maintaining, while can adjust at any time nacelle power after factory, the size of frictional force can by the pretightning force of fastener or
Person is adjusted by the quantity of fastener, and after nacelle generation, current state can be maintained to overhaul, will not arbitrarily moved
Dynamic, practicability is stronger.
For compared with the existing technology, in the crane that second aspect of the present invention provides nacelle protective device structure it is simple,
It is at low cost, controllability is strong, can preferably cope with nacelle operating condition, guarantee that the stress of wirerope does not exceed the critical value of setting.
For compared with the existing technology, the restoration methods recovery process for the nacelle protective device that third aspect present invention provides
Simply, it may not be necessary to fastener is removed, torsion measurement device or spanner are not needed, it can be not by special tool(s) the case where
Under, quickly nacelle protective device is restored to reset condition, to be protected to crane.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram for nacelle protective device that the embodiment of the present invention one provides；
Fig. 2 is that the embodiment of the present invention one provides X direction view；
Partial enlargement diagram at the A that Fig. 3 provides for the embodiment of the present invention one；
Partial enlargement diagram at the B that Fig. 4 provides for the embodiment of the present invention one；
Fig. 5 is a kind of structural schematic diagram of nacelle protective device provided by Embodiment 2 of the present invention；
Fig. 6 is a kind of structural schematic diagram for nacelle protective device that the embodiment of the present invention three provides；
Fig. 7 is a kind of structural schematic diagram for crane that the embodiment of the present invention four provides；
Fig. 8 is the structural schematic diagram for another crane that the embodiment of the present invention four provides；
Fig. 9 is a kind of structural schematic diagram for crane that the embodiment of the present invention five provides；
Figure 10 is a kind of structural schematic diagram for crane that the embodiment of the present invention six provides.
Icon: 1- fixed friction part；The left clamp arm of 11-；The right clamp arm of 12-；2- moves friction member；21- the first axle body；
The first friction member of 22-；23- the second axle body；The second friction member of 24-；3- fastener；31- bolt；32- nut；33- bullet
Property part；4- crane；The first support frame of 41-；The first push rod of 42-；The second support frame of 43-；The second push rod of 44-；45-
Three support frames；46- third push rod；5- motor；The first swing component of 6-；7- first pulley；8- first support bar；9- second
Swing component；10- second pulley；101- temporary fastening device；102- second support bar；103- third support rod.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is a kind of structural schematic diagram for nacelle protective device that the embodiment of the present invention one provides；
Fig. 2 is that the embodiment of the present invention one provides X direction view；Partial enlargement shows at the A that Fig. 3 provides for the embodiment of the present invention one
It is intended to；Partial enlargement diagram at the B that Fig. 4 provides for the embodiment of the present invention one；Fig. 5 is one kind provided by Embodiment 2 of the present invention
The structural schematic diagram of nacelle protective device；Fig. 6 is a kind of structural representation for nacelle protective device that the embodiment of the present invention three provides
Figure；Fig. 7 is a kind of structural schematic diagram for crane that the embodiment of the present invention four provides；Fig. 8 is what the embodiment of the present invention four provided
Another structural schematic diagram of crane；Fig. 9 is a kind of structural schematic diagram for crane that the embodiment of the present invention five provides；Figure 10
For a kind of structural schematic diagram for crane that the embodiment of the present invention six provides.
The purpose of the present embodiment is that a kind of nacelle protective device is provided, as depicted in figs. 1 and 2, including fixed friction part
1, mobile friction member 2 and at least one fastener 3, in which:
Fixed friction part 1 is for installing to crane 4；
One end of mobile friction member 2 is connect by each fastener 3 with fixed friction part, the other end be used to bear weight to
The pressure given；
Each fastener 3 is used to adjust the frictional force between fixed friction part 1 and mobile friction member 2.
When stating nacelle protective device in use, under normal load, due to multiple fasteners give fixed friction part and
Mobile one clamping force of friction member, mobile friction member will not slide under the action of this clamping force relative to fixed friction part.
When nacelle occurs, the pressure that weight gives mobile friction member is more than preset value, this pressure can overcome fixed friction part
The effect of nacelle protection is realized so that mobile friction member is mobile relative to fixed friction part with the frictional force of mobile friction member.Its
In, the size of frictional force can be adjusted by the pretightning force of fastener between fixed friction part and mobile friction member, can also
To be adjusted by the quantity of fastener.
The nacelle protective device that the embodiment of first aspect present invention provides is easy to operate, realizes lifting by frictional force
The nacelle of machine is protected, in addition, effectively protecting pulling during sliding since force of sliding friction is less than stiction
The wirerope stress of weight does not exceed the critical value of setting.For compared with the existing technology, structure is simple, at low cost, no
Continued power, pressure maintaining are needed, while nacelle power can be adjusted at any time after factory, the size of frictional force can pass through fastener
Pretightning force is adjusted by the quantity of fastener, and after nacelle generation, current state can be maintained to overhaul, no
It can arbitrarily move, practicability is stronger.
Further, above-mentioned nacelle protective device can also include sensor perhaps travel switch sensor or stroke
Switch is electrically connected with the motor in the lifting mechanism on crane.When nacelle occurs, mobile friction member is relative to fixed friction
Part is mobile, and mobile friction member moves a certain distance rear trigger sensor, and perhaps travel switch sensor or travel switch receive
Shutdown can be realized to electric signal.In stopping process, the relatively fixed friction member of mobile friction member continues to move to consumption excess energy,
Realize the effect of nacelle protection.
It is different with the mobile structure of friction member 2 according to fixed friction part 1, following three embodiments can be divided into:
Embodiment one:
In the present embodiment one, as shown in Figure 1, fixed friction part 1 is slided by each fastener 3 and mobile friction member 2
Connection, fixed friction part 1 are equipped with the first slot for inserting each fastener 3, and mobile friction member 2 is equipped with for inserting
Second slot of each fastener 3.
Wherein, the first slot in fixed friction part 1 may be jack.The second slot in mobile friction member 2 can also
Think jack.
It should be noted that in the present embodiment one, fastener 3 is multiple in order to enable the effect of nacelle protection is more preferable.
In the present embodiment one, as shown in Fig. 2, friction member 1 and shifting in order to enable fastener 3 can preferably be fixedly clamped
Dynamic friction piece 2, fixed friction part 1 include the left clamp arm 11 and right clamp arm 12 that are oppositely arranged, in left clamp arm 11 and right clamp arm 12
Equipped with the first slot, mobile friction member 2 is located between left clamp arm 11 and right clamp arm 12 by each fastener 3.When in use,
Fastener 3 sequentially passes through the first slot in left clamp arm 11, first on the second slot and right clamp arm 12 on mobile friction member 2
Slot, and left clamp arm 11 and right clamp arm 12 is made to clamp mobile friction member 2.
Alternatively, mobile friction member 2 may include left linking arm and right linking arm, fixed friction part 1 passes through each fastener 3
It is located between left linking arm and right linking arm.
Wherein, as depicted in figs. 1 and 2, mobile friction member 2 can be one piece of rectangle steel plate.
On the basis of the above embodiments, in order to facilitate the processing and installation of fastener 3, fastener 3 includes bolt 31, spiral shell
Mother 32 and elastic component 33, in which: bolt 31 passes through the first slot on fixed friction part 1 and inserts with second on mobile friction member 2
Slot；Nut 32 is sheathed on bolt 31；Elastic component 33 is sheathed on bolt 31,33 one end of elastic component and nut 32 offset or with
The head of bolt 31 offsets, and the other end and fixed friction part 1 offset to compensate the gap between nut 32 and fixed friction part 1 simultaneously
Pretightning force or the other end are provided and mobile friction member 2 offsets to compensate the gap between nut 32 and mobile friction member 2 and mention
For pretightning force.
When in use, it is specifically described by taking Fig. 1 as an example.Bolt 31 sequentially passes through the first slot in left clamp arm 11, moves
Elastic component 33, is then set on bolt 31, finally by the first slot on the second slot and right clamp arm 12 on dynamic friction piece 2
Nut 32 is screwed on bolt 31, so that elastic component 33 compresses left clamp arm 11, right clamp arm 12 and mobile friction member 2, the elasticity
Part 33 can guarantee axle power control in a certain range, and fluctuation less, can make up for it tight left clamp arm 11, right clamp arm 12 and movement
The size of the thickness reduction after repeatedly rubbing of friction member 2, avoids pretightning force from declining.
In some other embodiments, elastic component 33 can be located between the head of bolt 31 and fixed friction part 1, or
Between the head of person's bolt 31 and mobile friction member 2 or between nut 32 and mobile friction member 2.
When specifically used, position of the adjusting nut 32 relative to bolt 31 can be come according to the needs of actual conditions, from
And it realizes and facilitates the purpose for adjusting above-mentioned nacelle protective device trigger force.Such as factory before, perhaps debug acceptance phase or
After long-time use, nut more than 32 can be screwed in into 31 certain distance of bolt, left clamp arm 11 and right clamp arm 12 are clamped
Mobile friction member 2.
Wherein, elastic component 33 can be disc spring.
On the basis of the above embodiments, as shown in Figure 1, being additionally provided between elastic component 33 and right clamp arm 12 for by pressure
Equally distributed steel plate.
Embodiment two:
In the present embodiment two, as shown in figure 5, fastener 3 is one, mobile friction member 2 is for adjusting and having locked
The transmission shaft of 4 middle pulley position of heavy-duty machine, transmission shaft include the first axle body 21 and the first friction being sheathed on outside the first axle body 21
Part 22；Fixed friction part 1 is the gear on crane 4 in reduction gearbox, and gear is connected by fastener 3 and the transmission of the first axle body 21
It connects, and the end face of gear offsets with the first friction member 22.
It should be noted that the gear in reduction gearbox drives the first axle body by its friction between the first friction member 22
21 rotations, the first axle body 21 are threadedly coupled with telescopic arm, and the first axle body 21 will drive telescopic arm and carry out stretching motion when rotating.When
When nacelle occurs, weight can generate an extruding to telescopic arm, this pressure is transferred directly on the first axle body 21, force first
Axis body 21 is rotated relative to gear, realizes the retraction or elongation of telescopic arm, achievees the effect that nacelle is protected.Staff can lead to
Cross the threshold value for controlling the frictional force between the first friction member 22 and gear to adjust nacelle protection.This embodiment is to protect nacelle
Device is mounted on adjustment and locks the transmission shaft of pulley position.In some cases, the transmission shaft of haulage cable can also lead to
It crosses similar method and increases nacelle protective device, be not repeated.
Embodiment three:
In the present embodiment three, as shown in fig. 6, fastener 3 is one, mobile friction member 2 is for adjusting and locking institute
The power output shaft of the motor 5 of crane middle pulley position is stated, power output shaft includes the second axle body 23 and is sheathed on the second axis
The second friction member 24 outside body 23；Fixed friction part 1 is the shell of motor 5 or the electromagnetic brake of motor 5, motor 5 it is outer
The electromagnetic brake of shell or motor 5 is connect by fastener 3 with pto shaft drive, and the electricity of the shell of motor 5 or motor 5
The end face of magnetic brake offsets with the second friction member 24.
When nacelle occurs, the second axle body 23 rotates relative to the shell of motor 5 or the electromagnetic brake of motor 5.
Achieve the effect that nacelle is protected.Staff can pass through the second friction member of control 24 and the shell of motor 5 or the electromagnetism of motor 5
Frictional force between brake adjusts the threshold value of nacelle protection.This embodiment is that nacelle protective device is mounted on adjustment and is locked
The motor 5 of fixed pulley position.In some cases, the motor of haulage cable can also increase nacelle guarantor by similar methods
Protection unit is not repeated.
On the basis of embodiment two and embodiment three, fastener 3 can only include the first nut and the first elastic component, and
The both ends of one elastic component offset with mobile friction member 2 and the first nut respectively.
In some embodiments, as shown in Figure 3 and Figure 4, fixed friction part 1 includes the first adjustment section, the first adjustment section
Thickness is less than the thickness at other positions on fixed friction part 1；Or mobile friction member 2 includes the first adjustment section, the first adjustment section
Thickness be less than the thickness at other positions on mobile friction member 2.It is carried out for moving friction member 2 and including the first adjustment section specific
Illustrate, it is too fast due to needing to avoid the internal force of wirerope to increase in the nacelle initial stage, it needs suitably to reduce frictional force, because
This is moved between left clamp arm 11 and right clamp arm 12 when nacelle initial stage the first adjustment section, so that the reduction of frictional force slightly；
In nacelle later stage, nacelle is needed to stop as early as possible, need to properly increase frictional force, at this point, since mobile friction member 2 continues
It is mobile relative to left clamp arm 11 and right clamp arm 12, in addition to other positions of the first adjustment section can be pressed from both sides to left folder on mobile friction member 2
Between arm 11 and right clamp arm 12, frictional force is increased, realizes the stopping as early as possible of nacelle.In short, by adjusting the thickness or width of section
The adjustment of degree can accurately control the change procedure of the power of nacelle all stage, to realize the control of power Yu two factors of duration.
In the present embodiment one, when fixed friction part 1 includes the first adjustment section, the thickness of the first adjustment section can also be greater than
The thickness at other positions on fixed friction part 1, at this time nacelle initial stage, other positions on fixed friction part 1 are in left folder
Between arm 11 and right clamp arm 12；Or when moving friction member 2 including the first adjustment section, the thickness of the first adjustment section can also be greater than
Or the thickness less than other positions on mobile friction member 2.
Alternatively, fixed friction part 1 includes second adjustment section, the width of second adjustment section is less than or greater than fixed friction part 1
The width at other upper positions；Mobile friction member 2 includes second adjustment section, and the width of second adjustment section is less than or greater than mobile friction
The width at other positions on part 2.By adjusting width, the quantity of slot or jack or the contact surface of fastener 3 can be increased and decreased
Product, to achieve the effect that adjust frictional force.
Specifically, it is specifically described for moving friction member 2 and including second adjustment section.When the width of second adjustment section
When larger, referring to Fig. 2, two rows of, the even more numbers of rows of three rows slots can be equipped in the second adjustment section on mobile friction member 2
Or jack, the quantity of fastener 3 between fixed friction part 1 and mobile friction member 2 is on the one hand increased, is on the other hand increased solid
The contact area between friction member 1 and mobile friction member 2 is determined, to increase frictional force between the two；When second adjustment section
When width is smaller, it can be provided only with a rows of sockets or jack in second adjustment section, on the one hand reduce fixed friction part 1 and movement
On the other hand the quantity of fastener 3 between friction member 2 reduces the contact surface between fixed friction part 1 and mobile friction member 2
Product, to reduce frictional force between the two.
The embodiment of second aspect of the present invention provides a kind of crane, including above-mentioned nacelle protective device.Relative to existing
For technology, nacelle protective device structure is simple, at low cost, controllable in the crane that the embodiment of second aspect of the present invention provides
Property is strong, can preferably cope with nacelle operating condition, guarantee that the stress of wirerope does not exceed the critical value of setting.
Following three embodiments can be divided into according to the structure difference of crane:
Example IV:
In the present embodiment four, crane 4 includes the first support frame 41 and the first push rod connecting with the first support frame 41
42, in which:
As shown in fig. 7, fixed friction part 1 is connect far from one end of mobile friction member 2 with the first support frame 41, so that nacelle
Protective device and driving device protect crane by the way of in parallel between the first push rod 42, do not do mutually
It disturbs.
Alternatively, as shown in figure 8, the end of fixed friction part 1 one end and the first push rod 42 far from mobile friction member 2 connects
It connects, so that nacelle protective device and driving device protect crane using concatenated mode between the first push rod 42
Shield, structure are simple.
In the present embodiment four, above-mentioned crane further includes the first swing component 6, and the first swing component 6 is equipped with for winding
The first pulley 7 of wirerope；
As shown in fig. 7, when fixed friction part 1 is connect far from one end of mobile friction member 2 with the first support frame 41, first
Swing component 6 is hinged with the first push rod 42 and mobile friction member 2 respectively.First push rod 42 is pushed away for giving the first swing component 6 one
Power, for moving forward or moving back first pulley 7.When working properly, nacelle protective device is equivalent to a fulcrum, the first swing component
6 rotate around its axis hinged with mobile friction member 2, when nacelle occurs, the pulling force overrate that wirerope is subject to, the
One swing component 6 presses mobile friction member 2, so that mobile friction member 2 is mobile relative to fixed friction part 1.
As shown in figure 8, when fixed friction part 1 is connect far from one end of mobile friction member 2 with the end of the first push rod 42,
It further include first support bar 8, the first swing component 6 and mobile friction member 2 are hinged, and 8 one end of first support bar and the first swing component 6 are cut with scissors
It connects, the other end is connect with the first support frame 41.First push rod 42 is for giving nacelle protective device one thrust, nacelle protection dress
It sets and thrust is transferred to the first swing component 6, so that the first swing component 6 moves forward or move back first pulley 7.When working properly,
One support rod 8 is equivalent to a fulcrum, and the first swing component 6 is rotated around it with the hinged axis of first support bar 8, when nacelle is sent out
When raw, the pulling force overrate that wirerope is subject to, the first swing component 6 pulls mobile friction member 2, so that mobile 2 phase of friction member
It is mobile for fixed friction part 1.
Embodiment five:
In the present embodiment five, crane 4 includes the second support frame 43 and the second push rod 44, in which: as shown in figure 9, the
Two push rods 44 include the first axle body 21 and the first friction member 22.Fixed friction part 1 is the gear on crane 4 in reduction gearbox.Tooth
Wheel is connect by fastener 3 with the first axle body 21.Nacelle protective device is combined together with driving device i.e. the second push rod 44, knot
Structure is simple.
In the present embodiment five, above-mentioned crane further includes the second swing component 9, and the second swing component 9 is equipped with for winding
The second pulley 10 of wirerope.As shown in figure 9, further including second support bar 102, the second swing component 9 and the second push rod 44 are hinged,
102 one end of second support bar and the second swing component 9 are hinged, and the other end is connect with the second support frame 43.Second push rod 44 is for producing
A raw thrust, so that the second swing component 9 moves forward or move back second pulley 10.When working properly, second support bar is equivalent to
One fulcrum, the second swing component 9 are rotated around its hinged axis with second support bar, when nacelle occurs, wirerope by
Pulling force overrate, the second swing component 9 pulls the first axle body 21, so that mobile friction member 2 is relative to 1 turn of fixed friction part
It is dynamic.
Embodiment six:
In the present embodiment six, crane 4 includes third support frame 45 and third push rod 46, in which: such as Figure 10 and Fig. 6 institute
Show, equipped with the second axle body 23 and the second friction member 24 being sheathed on outside the second axle body 23 in motor 5；Fixed friction part 1 is electricity
The shell of machine 5 or the electromagnetic brake of motor 5, the shell of motor 5 or the electromagnetic brake of motor 5 pass through fastener 3 and power
Output shaft transmission connection.Nacelle protective device is combined together with driving device, that is, third push rod 46, and structure is simple.
In the present embodiment six, above-mentioned crane further includes the second swing component 9, and the second swing component 9 is equipped with for winding
The second pulley 10 of wirerope.It as shown in Figure 10, further include third support rod 103, the second swing component 9 is cut with scissors with third push rod 46
It connects, 103 one end of third support rod and the second swing component 9 are hinged, and the other end is connect with third support frame 45.Third push rod 46 is used for
A thrust is generated, so that the second swing component 9 moves forward or move back second pulley 10.When working properly, second support bar is suitable
In a fulcrum, the second swing component 9 is rotated around it with the hinged axis of second support bar, when nacelle occurs, wirerope by
The pulling force overrate arrived, the second swing component 9 pull the second axle body 23 by transmission mechanism, so that the second friction member 24 is opposite
It is rotated in fixed friction part 1.
The embodiment of third aspect present invention provides a kind of restoration methods of nacelle protective device, uses in first aspect
Any nacelle protective device, comprising:
It gives mobile friction member 2 one pulling force, friction member 2 will be moved relative to fixed friction part 1 and be moved to raw bits
It sets.
As shown in fig. 7, using temporary fastening device 101, temporary fastening device 101 becomes at this time after crane nacelle
For rigid connection.When pushing the first push rod 42, because lever ratio is changed, the first push rod 42 can be in the thrust of very little
Under effect, original frictional force is just overcome, mobile friction member 2 is pushed to slide into original position.This process does not need to remove fastening
Part 3, so also not needing the pretightning force that torsion measurement device etc. readjusts fastener.
For compared with the existing technology, the restoration methods for the nacelle protective device that the embodiment of third aspect present invention provides
Recovery process is simple, it may not be necessary to and fastener is removed, torsion measurement device or spanner are not needed, it can be not by special work
In the case where tool, quickly nacelle protective device is restored to reset condition, to be protected to crane.
In some embodiments, before giving 2 one pulling force of mobile friction member, further includes: remove multiple fasteners 3；
It is clamped after mobile friction member 2 is moved to home position relative to fixed friction part 1, then through multiple fasteners 3
Fixed friction part 1 and mobile friction member 2.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (11)
1. a kind of nacelle protective device, which is characterized in that including fixed friction part (1), mobile friction member (2) and at least one tightly
Firmware (3), in which:
The fixed friction part (1) is for installing to crane (4)；
One end of the mobile friction member (2) is connect by each fastener (3) with the fixed friction part (1), another
Hold the pressure given for bearing weight；
Each fastener (3) is used to adjust the friction between the fixed friction part (1) and the mobile friction member (2)
Power.
2. nacelle protective device according to claim 1, which is characterized in that the fixed friction part (1) passes through each institute
It states fastener (3) to be slidably connected with the mobile friction member (2), the fixed friction part (1) is equipped with for inserting each institute
The first slot of fastener (3) is stated, the mobile friction member (2) is equipped with second for inserting each fastener (3)
Slot.
3. nacelle protective device according to claim 2, which is characterized in that the fixed friction part (1) includes opposite sets
The left clamp arm (11) and right clamp arm (12) set are equipped with described first on the left clamp arm (11) and the right clamp arm (12) and insert
Slot, the mobile friction member (2) are located in the left clamp arm (11) and the right clamp arm (12) by each fastener (3)
Between.
4. nacelle protective device according to claim 1, which is characterized in that the fastener (3) includes bolt (31), spiral shell
Female (32) and elastic component (33), in which:
The bolt (31) passes through the fixed friction part (1), and/or, the bolt (31) passes through the mobile friction member
(2)；
The nut (32) is sheathed on the bolt (31)；
The elastic component (33) is sheathed on the bolt (31), described elastic component (33) one end and the nut (32) offset or
Person and the head of the bolt (31) offset, the other end and the fixed friction part (1) offset with compensate the nut (32) with
Gap between the fixed friction part (1) simultaneously provides pretightning force or the other end and the mobile friction member (2) offsets to mend
It repays the gap between the nut (32) and the mobile friction member (2) and pretightning force is provided.
5. nacelle protective device according to claim 1, which is characterized in that when the fastener (3) are one:
The mobile friction member (2) is the transmission shaft for adjusting and locking the crane (4) middle pulley position, the transmission
Axis includes the first axle body (21) and the first friction member (22) for being sheathed on the first axle body (21) outside；
The fixed friction part (1) is the gear on the crane (4) in reduction gearbox, and the gear passes through the fastener
(3) it is sequentially connected with the first axle body (21), and the end face of the gear offsets with first friction member (22).
6. nacelle protective device according to claim 1, which is characterized in that when the fastener (3) are one:
The mobile friction member (2) is the power output for adjusting and locking the motor (5) of crane middle pulley position
Axis, the power output shaft include the second axle body (23) and the second friction member for being sheathed on the second axle body (23) outside
(24)；
The fixed friction part (1) is the shell of the motor (5) or the electromagnetic brake of the motor (5), the motor (5)
Shell or the electromagnetic brake of the motor (5) connect by the fastener (3) with the pto shaft drive, and institute
The end face for stating the shell of motor (5) or the electromagnetic brake of the motor (5) offsets with second friction member (24).
7. nacelle protective device according to claim 1-6, which is characterized in that fixed friction part (1) packet
The first adjustment section is included, the thickness of the first adjustment section is less than or greater than the thickness at other positions on the fixed friction part (1)；
Or the mobile friction member (2) includes the first adjustment section, the thickness of the first adjustment section is less than or greater than the shifting
The thickness at other positions on dynamic friction piece (2).
8. nacelle protective device according to claim 1-6, which is characterized in that fixed friction part (1) packet
Second adjustment section is included, the width of the second adjustment section is less than or greater than the width at other positions on the fixed friction part (1)；
Or the mobile friction member (2) includes second adjustment section, the width of the second adjustment section is less than or greater than the shifting
The width at other positions on dynamic friction piece (2).
9. a kind of crane, which is characterized in that including the described in any item nacelle protective devices of such as claim 1-8.
10. a kind of restoration methods of nacelle protective device, which is characterized in that use as claim 1-8 is described in any item
Nacelle protective device, comprising:
Give the mobile friction member (2) pulling force, by the mobile friction member (2) relative to the fixed friction part
(1) it is moved to home position.
11. the restoration methods of nacelle protective device according to claim 10, which is characterized in that rub giving the movement
Before wiping (2) pulling force of part, further includes: remove multiple fasteners (3)；
After the mobile friction member (2) is moved to home position relative to the fixed friction part (1), then by multiple described
Fastener (3) clamps the fixed friction part (1) and the mobile friction member (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811255052.8A CN109132873A (en) | 2018-10-25 | 2018-10-25 | The restoration methods of nacelle protective device, crane and nacelle protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811255052.8A CN109132873A (en) | 2018-10-25 | 2018-10-25 | The restoration methods of nacelle protective device, crane and nacelle protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109132873A true CN109132873A (en) | 2019-01-04 |
Family
ID=64810140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811255052.8A Pending CN109132873A (en) | 2018-10-25 | 2018-10-25 | The restoration methods of nacelle protective device, crane and nacelle protective device |
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| Country | Link |
|---|---|
| CN (1) | CN109132873A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117088260A (en) * | 2023-10-18 | 2023-11-21 | 南通中远海运重工装备有限公司 | Damper type hanging cabin protection device of shore container bridge crane |
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| CN207497933U (en) * | 2017-09-29 | 2018-06-15 | 上海振华重工(集团)股份有限公司 | Nacelle protective device |
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| CN201166077Y (en) * | 2008-01-18 | 2008-12-17 | 北京工业大学 | Plate type friction changeable damper |
| CN104326367A (en) * | 2014-10-31 | 2015-02-04 | 润邦卡哥特科工业有限公司 | Damper type snag protector of quayside container bridge crane |
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| CN117088260A (en) * | 2023-10-18 | 2023-11-21 | 南通中远海运重工装备有限公司 | Damper type hanging cabin protection device of shore container bridge crane |
| CN117088260B (en) * | 2023-10-18 | 2023-12-26 | 南通中远海运重工装备有限公司 | Damper type hanging cabin protection device of shore container bridge crane |
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