CN208898395U

CN208898395U - Nacelle protective device and crane

Info

Publication number: CN208898395U
Application number: CN201821744993.3U
Authority: CN
Inventors: 朱丽蓉
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-10-25
Filing date: 2018-10-25
Publication date: 2019-05-24
Anticipated expiration: 2028-10-25

Abstract

The utility model provides a kind of nacelle protective device and crane; it is related to technical field of crane equipment; nacelle protective device provided by the utility model 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 utility model 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

Nacelle protective device and crane

Technical field

The utility model relates to technical field of crane equipment, more particularly, to a kind of nacelle protective device and crane.

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 to provide a kind of structure is simple, at low cost, controllability is strong nacelle protective device and crane is ability One of field technique personnel technical problem to be solved.

Utility model content

The purpose of this utility model is to provide a kind of nacelle protective device and cranes, to solve extension in the prior art The technical issues of structure is complicated for cabin protective device, at high cost, poor controllability.

In a first aspect, the utility model provides a kind of nacelle protective device, including fixed friction part, mobile friction member and extremely A few 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 utility model also provide a kind of crane, protect including the nacelle any in first aspect Protection unit.

Nacelle protective device and lifting function provided by the utility model generate it is following the utility model has the advantages that

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 utility model first aspect provides is easy to operate, realizes crane by frictional force Nacelle protection, in addition, effectively protecting pulling weight during sliding since force of sliding friction is less than stiction Wirerope stress do not exceed the critical value of setting.For compared with the existing technology, structure is simple, at low cost, does not need Continued power, pressure maintaining, while nacelle power can be adjusted at any time after factory, the size of frictional force can pass through the preload of fastener Power is adjusted by the quantity of fastener, and after nacelle generation, current state can be maintained to overhaul, Bu Huisui Meaning movement, practicability are stronger.

For compared with the existing technology, nacelle protective device structure letter in the crane that the utility model second aspect provides It is single, at low cost, controllability is strong, can preferably cope with nacelle operating condition, guarantee that the stress of wirerope does not exceed the critical of setting Value.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it 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 utility model embodiment one provides；

Fig. 2 is that the utility model embodiment one provides X direction view；

Partial enlargement diagram at the A that Fig. 3 provides for the utility model embodiment one；

Partial enlargement diagram at the B that Fig. 4 provides for the utility model embodiment one；

Fig. 5 is a kind of structural schematic diagram for nacelle protective device that the utility model embodiment two provides；

Fig. 6 is a kind of structural schematic diagram for nacelle protective device that the utility model embodiment three provides；

Fig. 7 is a kind of structural schematic diagram for crane that the utility model embodiment four provides；

Fig. 8 is the structural schematic diagram for another crane that the utility model embodiment four provides；

Fig. 9 is a kind of structural schematic diagram for crane that the utility model embodiment five provides；

Figure 10 is a kind of structural schematic diagram for crane that the utility model embodiment 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

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are 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 " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.

Fig. 1 is a kind of structural schematic diagram for nacelle protective device that the utility model embodiment one provides；Fig. 2 is that this is practical New embodiment one provides X direction view；Partial enlargement diagram at the A that Fig. 3 provides for the utility model embodiment one；Fig. 4 is Partial enlargement diagram at the B that the utility model embodiment one provides；Fig. 5 is a kind of extension that the utility model embodiment two provides The structural schematic diagram of cabin protective device；Fig. 6 is that a kind of structure for nacelle protective device that the utility model embodiment three provides is shown It is intended to；Fig. 7 is a kind of structural schematic diagram for crane that the utility model embodiment four provides；Fig. 8 is the utility model implementation The structural schematic diagram for another crane that example four provides；Fig. 9 is a kind of crane that the utility model embodiment five provides Structural schematic diagram；Figure 10 is a kind of structural schematic diagram for crane that the utility model embodiment 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.

The nacelle protective device that the embodiment of the utility model first aspect provides is easy to operate, is realized by frictional force The nacelle of crane is protected, in addition, effectively protecting during sliding since force of sliding friction is less than stiction The wirerope stress of weight is pulled not exceed the critical value of setting.For compared with the existing technology, structure is simple, cost It is low, continued power, pressure maintaining are not needed, while nacelle power can be adjusted at any time after factory, the size of frictional force can be by tight The pretightning force of firmware is adjusted by the quantity of fastener, and nacelle generation after, can maintain current state so as to Maintenance, will not 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 the utility model second aspect provides a kind of crane, including above-mentioned nacelle protective device.Relative to For the prior art, in the crane that the embodiment of the utility model second aspect provides nacelle protective device structure it is simple, at This is low, controllability is strong, can preferably cope with nacelle operating condition, guarantees 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.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims

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.