CN102442619A - Steel wire rope pre-tightening device and tower crane with same - Google Patents

Steel wire rope pre-tightening device and tower crane with same Download PDF

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Publication number
CN102442619A
CN102442619A CN2011103934993A CN201110393499A CN102442619A CN 102442619 A CN102442619 A CN 102442619A CN 2011103934993 A CN2011103934993 A CN 2011103934993A CN 201110393499 A CN201110393499 A CN 201110393499A CN 102442619 A CN102442619 A CN 102442619A
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CN
China
Prior art keywords
steel rope
mandrel
platen
tightening apparatus
rotating shaft
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CN2011103934993A
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Chinese (zh)
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CN102442619B (en
Inventor
易德辉
郑兴
陈汉湘
李双林
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中联重科股份有限公司
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Priority to CN201110393499.3A priority Critical patent/CN102442619B/en
Publication of CN102442619A publication Critical patent/CN102442619A/en
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Publication of CN102442619B publication Critical patent/CN102442619B/en

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Abstract

The invention provides a steel wire rope pre-tightening device and a tower crane with the same. The steel wire rope pre-tightening device comprises a central shaft component (4) and a magnetic powder brake (1), the central shaft component (4) comprises a rotary shaft and a fixing device, the rotary shaft penetrates through a central hole of a steel wire rope drum (3), the fixing device is used for fixing the steel wire rope drum (3) onto the rotary shaft, and the magnetic powder brake (1) is connected with the rotary shaft. Since the magnetic powder brake exerts brake torque on the rotary shaft, a steel wire rope can be pre-tightened conveniently and reliably.

Description

Steel rope pre-tightening apparatus and have its tower crane

Technical field

The present invention relates to the elevator machinery field, more specifically, relate to a kind of steel rope pre-tightening apparatus and have its tower crane.

Background technology

Steel rope need carry out tensioning to steel rope before on the reel of the lifting mechanism that is wound into tower crane in advance.Under the general situation, steel rope is afterburning through passing through behind the pretension again, is wound into then on the reel of lifting mechanism.Wherein, steel rope is carried out slack-free device in advance and be the steel rope pre-tightening apparatus.

In the prior art; To carry out slack-free in advance device as shown in Figure 1 to being wrapped in steel rope on the reel 10 '; The mandrel of central axis component 20 ' passes the endoporus of cable drum 10 '; Addendum cone through central axis component 20 ' is marked closely reel 10 ', reel 10 ' and central axis component 20 ' is gone up at idler assembly 40 ' together rotated.When cable drum 10 ' rotated, friction disc system 30 ' provided the lock torque with direction of rotation, when restricting to put at reel 10 ', steel rope was applied certain pretension tension force.Because manual control is leaned on by friction disc system 30 ', is difficult to effective braking in actual use, skids easily.And when changing cable drum 10 ', dismounting is convenient inadequately.

Summary of the invention

The object of the invention be to provide a kind of can be easily and reliably to the steel rope pre-tightening apparatus that carries out pretension of steel rope and have its tower crane.

The invention provides a kind of steel rope pre-tightening apparatus; Comprise central axis component; Said central axis component comprises and is used to pass the rotating shaft of cable drum centre hole and is used for said cable drum is fixed in the anchor fitting in the said rotating shaft that said steel rope pre-tightening apparatus also comprises and said rotating shaft bonded assembly electromagnetic power brake.

Further, said electromagnetic power brake is connected through cross formula universal coupling with said rotating shaft.

Further, said steel rope pre-tightening apparatus also comprises: tension control assembly is used to drive said electromagnetic power brake; Control setup, said control setup are regulated the exciting current size of said tension control assembly to control the lock torque size of said electromagnetic power brake.

Further, said steel rope pre-tightening apparatus also comprises: underframe; Idler assembly is arranged on the said underframe, and said rotating shaft is rotated on said idler assembly.

Further, said anchor fitting comprises first platen and second platen that is arranged at said rotating shaft two ends, and is arranged at the addendum cone on said first platen and said second platen respectively, through said addendum cone said cable drum is fixed in the said rotating shaft.

Further, said addendum cone comprises and said first platen and said second platen bonded assembly lead screw and the tapering that is positioned at the screw rod end that said tapering is towards said cable drum.

Further, said rotating shaft comprises the mandrel of hollow and is arranged at the first solid minor axis and the second solid minor axis at said mandrel two ends respectively; The said first solid minor axis is inserted in said mandrel first end; Said first platen is set in outside said mandrel first end; The said first solid minor axis is connected with said mandrel through first latch with said first platen, and the end of said first latch is provided with first spring cotter; The said second solid minor axis is inserted in said mandrel second end; Said second platen is set in outside said mandrel second end; The said second solid minor axis is connected with said mandrel through second latch with said second platen, and the said second latch end is provided with second spring cotter.

Further, the said first solid minor axis of said rotating shaft is connected with said electromagnetic power brake; On first end of said mandrel and the said first solid minor axis, be provided with accordingly with the axis normal of said rotating shaft, be suitable for a plurality of first through holes that said first latch passes, and/or on second end of said mandrel and the said second solid minor axis, be provided with accordingly and be suitable for a plurality of second through holes that said second latch passes.

Further, said second platen comprises disk body and adapter sleeve, and said adapter sleeve is connected through said second latch with the said mandrel and the said second solid minor axis; Said central axis component also comprises: movable sleeve, be arranged at second end of said mandrel, and between the adapter sleeve of said mandrel and said second platen; Throw-out lever, said movable sleeve and said adapter sleeve connect as one through said throw-out lever.

The present invention also provides a kind of tower crane, comprises aforesaid steel rope pre-tightening apparatus.

According to steel rope pre-tightening apparatus of the present invention,, can realize pretension easily and reliably to steel rope through electromagnetic power brake countershaft brake activation moment.Further, between electromagnetic power brake and central axis component, use cross formula universal coupling to be connected, utilize the function that freely swings of its Telescopic and certain angle, can carry out the loading and unloading of reel easily.Further,, can regulate the lock torque of electromagnetic power brake through the Based Intelligent Control of control setup, so the size of control steel rope pretension tension force, make the steel rope of different model all can reach required pretension tension force, satisfy the multi-state operating needs.

Description of drawings

The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the steel rope pre-tightening apparatus structural representation of the tower crane of prior art;

Fig. 2 is the steel rope pre-tightening apparatus structural representation according to tower crane of the present invention; And

Fig. 3 is the structural representation according to wire ropes for tower cranes pre-tightening apparatus central axis component of the present invention.

The specific embodiment

Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.

As shown in Figure 2; Steel rope pre-tightening apparatus of the present invention comprises central axis component 4; Central axis component 4 comprises and is used to pass the rotating shaft of cable drum 3 centre holes and is used for cable drum 3 is fixed in the anchor fitting in the rotating shaft that the steel rope pre-tightening apparatus also comprises and rotating shaft bonded assembly electromagnetic power brake 1.Electromagnetic power brake 1 is a kind of Automatic Control Component of superior performance; It is a working medium with the magnetic, is control device with the exciting current, can reach the purpose of control kinetic moment; Its output is changeed distance and is good linear relationship and has speed of response fast with exciting current, advantage of simple structure.Through anchor fitting cable drum 3 is fixed in the rotating shaft; Cable drum 3 will rotate with rotating shaft together; And electromagnetic power brake 1 countershaft provides lock torque, thereby to cable drum 3 the oppositely directed lock torque of direction of restricting of putting with respect to cable drum 3 is provided.Therefore, when cable drum 3 is put rope,, can make steel rope have certain pretension tension force owing to receive the effect of counter braking force square.

In the present embodiment, electromagnetic power brake 1 is connected through cross formula universal coupling 2 with rotating shaft.Cross formula universal coupling 2 can be realized freely swinging of flexible and certain angle.When the steel rope pre-tightening apparatus was worked, cross formula universal coupling 2 was in elongation state.When the steel rope on the cable drum 3 is all emitted; Cable drum 3 need disassemble and change; At this moment can cross formula universal coupling 2 be shortened certain length through regulating its Telescopic; And if the angle of cross formula universal coupling 2 can also be adjusted not on same straight line the time in the axle center of axle center and central axis component 4 that runs into cross formula universal coupling 2.The function of stretching and can in certain angle, swing of the cross formula of applying in a flexible way universal coupling 2; Can very easily cross formula universal coupling 2 and central axis component 4 be separated, thereby central axis component 4 and cable drum 3 are disassembled the dismounting operation of carrying out cable drum 3 together.

For the lock torque of electromagnetic power brake 1 is regulated and controlled, the steel rope pre-tightening apparatus also comprises control setup and the tension control assembly that is used to drive electromagnetic power brake 1; Thereby the exciting current of control setup adjustment of tonicity controller size realizes the lock torque size of control electromagnetic power brake 1.Controlled the lock torque of electromagnetic power brake, pretension tension force required in the time of just can putting rope according to the different size adjusting steel rope of steel rope is big or small, and its convenient and reliable operation.

As shown in Figure 2, in the present embodiment, the steel rope pre-tightening apparatus also comprises underframe 6 and idler assembly 5, and idler assembly 5 is arranged on the underframe 6, and rotating shaft is rotated on idler assembly 5.Idler assembly 5 is set can disassemble central axis component 4 and cable drum 3 to carry out the replacing operation of cable drum 3 after the steel rope on the cable drum 3 has been put easily together.

Be used for that cable drum 3 is fixed in anchor fitting in the rotating shaft and can adopt multiplely, for example claw is set respectively in the both sides of cable drum 3.In the present embodiment; As shown in Figures 2 and 3; The anchor fitting of central axis component comprises the first platen 41a and the second platen 41b that is arranged at the rotating shaft two ends, and is arranged at the addendum cone 44 on the first platen 41a and the second platen 41b respectively, through addendum cone 44 cable drum 3 is fixed in the rotating shaft.Because the specification difference or the manufacturing errors of cable drum 3; Different cable drum 3 its width maybe be different; In order to adapt to this situation; Addendum cone 44 comprises and the first platen 41a and the second platen 41b spiral bonded assembly lead screw, and the degree of depth that can screw in through lead screw is carried out step-less adjustment to the distance that is arranged at the addendum cone 44 on the first platen 41a and be arranged between the end of the second platen 41b addendum cone 44.Screw rod end at addendum cone 44 is provided with the tapering, and the tapering, is provided with the tapering and can makes addendum cone 44 clench cable drum 3 so that it is fixed towards cable drum 3, and cable drum 3 can not produced relative rotation with rotating shaft in putting the rope process.Preferably, on each platen, a plurality of addendum cones 44 are along circumferentially evenly arranging.

Rotating shaft can be set to a solid axle.Yet in the present embodiment, in order to practice thrift cost, to alleviate weight of equipment, as shown in Figures 2 and 3, rotating shaft comprises the mandrel 45 of hollow and is arranged at the first solid minor axis 46a and the second solid minor axis 46b at mandrel 45 two ends respectively; The first solid minor axis 46a is inserted in mandrel 45 first ends; The first platen 41a is set in outside mandrel 45 first ends; The first solid minor axis 46a is connected with mandrel 45 through the first latch 42a with the first platen 41a, and the end of the first latch 42a is provided with the first spring cotter 43a; The second solid minor axis 46b is inserted in mandrel 45 second ends; The second platen 41b is set in outside mandrel 45 second ends; The second solid minor axis 46b is connected with mandrel 45 through the second latch 42b with the second platen 41b, and the second latch 42b end is provided with the second spring cotter 43a.Adopt the mode of latch and spring cotter that platen, mandrel and solid minor axis are linked together, be convenient to platen is disassembled from rotating shaft, thereby make things convenient for the dismounting on reel 3 and the central axis component 4.

As shown in Figure 2, the first solid minor axis 46a of rotating shaft is connected with electromagnetic power brake 1; As shown in Figures 2 and 3; A plurality of through holes with the axis normal of rotating shaft are set on second end of mandrel 45 and the second solid minor axis 46b accordingly, and the second latch 42b is suitable for penetrating in each from a plurality of through holes to connect the second platen 41b, second solid minor axis 46b and the mandrel 45.Can regulate the distance between the first platen 41a and the second platen 41b through changing the through hole that the second latch 42b penetrated like this, cooperate the regulating action of addendum cone 44 again, just can adapt to the wide variety of reel 3 in the larger context.Need to prove that the structure that also can same a plurality of through holes be set to first end and the first solid minor axis 46a of mandrel 45 adapts to the wide variety of cable drum 3 further.

As shown in Figures 2 and 3, the second platen 41b comprises disk body and adapter sleeve, and adapter sleeve is connected with the corresponding second spring cotter 43b through the second latch 42b with the mandrel 45 and the second solid minor axis 46b; Central axis component 4 also comprises movable sleeve 47 and throw-out lever 48.Movable sleeve 47 is arranged at second end of mandrel 45, and between the adapter sleeve of the mandrel 45 and the second platen 41b; Movable sleeve 47 connects as one through throw-out lever 48 with adapter sleeve.In the present embodiment, reel 3 is that the end from the second platen 41b penetrates or pass rotating shaft, and therefore the second platen 41b will carry out dismounting repeatedly with rotating shaft, and movable sleeve 7 promptly is provided with in order to adapt to the dismounting needs.

Aforesaid steel rope pre-tightening apparatus is particularly suitable for being applied in the tower crane, and the predetermincd tension of needs is provided around steel rope for the lifting mechanism commentaries on classics of the various models of tower crane.

Can find out that from above description the above embodiments of the present invention have realized following technique effect:, can realize pretension effectively to steel rope through electromagnetic power brake countershaft brake activation moment.Between electromagnetic power brake and central axis component, use cross formula universal coupling to link to each other, utilize the function that freely swings of its Telescopic and certain angle, can carry out the loading and unloading of reel easily.Through the Based Intelligent Control of control setup, can control the lock torque of electromagnetic power brake, so that the size of control steel rope pretension tension force, make the steel rope of different model all can reach required predetermincd tension, satisfy the multi-state operating needs.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. steel rope pre-tightening apparatus; Comprise central axis component (4); Said central axis component (4) comprises and is used to pass the rotating shaft of cable drum (3) centre hole and is used for said cable drum (3) is fixed in the anchor fitting in the said rotating shaft; It is characterized in that said steel rope pre-tightening apparatus also comprises and said rotating shaft bonded assembly electromagnetic power brake (1).
2. steel rope pre-tightening apparatus according to claim 1 is characterized in that, said electromagnetic power brake (1) is connected through cross formula universal coupling (2) with said rotating shaft.
3. steel rope pre-tightening apparatus according to claim 1 and 2 is characterized in that, said steel rope pre-tightening apparatus also comprises:
Tension control assembly is used to drive said electromagnetic power brake (1);
Control setup, said control setup are regulated the exciting current size of said tension control assembly to control the lock torque size of said electromagnetic power brake (1).
4. steel rope pre-tightening apparatus according to claim 1 and 2 is characterized in that, said steel rope pre-tightening apparatus also comprises: underframe (6);
Idler assembly (5) is arranged on the said underframe (6), and said rotating shaft is gone up at said idler assembly (5) and rotated.
5. steel rope pre-tightening apparatus according to claim 1 and 2; It is characterized in that; Said anchor fitting comprises first platen (41a) and second platen (41b) that is arranged at said rotating shaft two ends; And be arranged at the addendum cone (44) on said first platen (41a) and said second platen (41b) respectively, through said addendum cone (44) said cable drum (3) is fixed in the said rotating shaft.
6. steel rope pre-tightening apparatus according to claim 5; It is characterized in that; Said addendum cone (44) comprises and said first platen (41a) and said second platen (41b) bonded assembly lead screw and the tapering that is positioned at the screw rod end that said tapering is towards said cable drum (3).
7. steel rope pre-tightening apparatus according to claim 5 is characterized in that,
Said rotating shaft comprises the mandrel (45) of hollow and is arranged at the first solid minor axis (46a) and the second solid minor axis (46b) at said mandrel (45) two ends respectively;
The said first solid minor axis (46a) is inserted in said mandrel (45) first ends; Said first platen (41a) is set in outside said mandrel (45) first ends; The said first solid minor axis (46a) is connected with said mandrel (45) through first latch (42a) with said first platen (41a), and the end of said first latch (42a) is provided with first spring cotter (43a);
The said second solid minor axis (46b) is inserted in said mandrel (45) second ends; Said second platen (41b) is set in outside said mandrel (45) second ends; The said second solid minor axis (46b) is connected with said mandrel (45) through second latch (42b) with said second platen (41b), and said second latch (42b) end is provided with second spring cotter (43a).
8. steel rope pre-tightening apparatus according to claim 7 is characterized in that,
The said first solid minor axis (46a) of said rotating shaft is connected with said electromagnetic power brake (1);
On first end of said mandrel (45) and the said first solid minor axis (46a), be provided with accordingly with the axis normal of said rotating shaft, be suitable for a plurality of first through holes that said first latch (42a) passes, and/or
On second end of said mandrel (45) and the said second solid minor axis (46b), be provided with accordingly and be suitable for a plurality of second through holes that said second latch (42b) passes.
9. steel rope pre-tightening apparatus according to claim 7 is characterized in that,
Said second platen (41b) comprises disk body and adapter sleeve, and said adapter sleeve is connected through said second latch (42b) with the said mandrel (45) and the said second solid minor axis (46b);
Said central axis component (4) also comprises:
Movable sleeve (47) is arranged at second end of said mandrel (45), and is positioned between the adapter sleeve of said mandrel (45) and said second platen (41b);
Throw-out lever (48), said movable sleeve (47) connects as one through said throw-out lever (48) with said adapter sleeve.
10. a tower crane comprises the steel rope pre-tightening apparatus, it is characterized in that, said steel rope pre-tightening apparatus is according to each described steel rope pre-tightening apparatus among the claim 1-9.
CN201110393499.3A 2011-12-01 2011-12-01 Steel wire rope pre-tightening device and tower crane with same CN102442619B (en)

Priority Applications (1)

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CN201110393499.3A CN102442619B (en) 2011-12-01 2011-12-01 Steel wire rope pre-tightening device and tower crane with same

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Application Number Priority Date Filing Date Title
CN201110393499.3A CN102442619B (en) 2011-12-01 2011-12-01 Steel wire rope pre-tightening device and tower crane with same

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CN102442619B CN102442619B (en) 2014-05-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109455631A (en) * 2018-12-07 2019-03-12 中联重科股份有限公司 Rope body pre-tightening apparatus, pretensioner systems and derrick crane

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB783963A (en) * 1953-05-07 1957-10-02 Elmeg A device for the control and braking of hoisting devices
CN2566256Y (en) * 2002-08-08 2003-08-13 浙江大学 Automatic detecting platform for electric bicycle
CN1440006A (en) * 2002-02-20 2003-09-03 程常现 Tension control experimental facility
CN1528652A (en) * 2003-10-14 2004-09-15 曾晓东 Belt-drive elevator dragging machine
CN101780928A (en) * 2010-03-19 2010-07-21 杨丽焕 electromagnetic braking tensioning winch
CN201688968U (en) * 2010-05-28 2010-12-29 徐州圣邦机械有限公司 Loading test machine of crane hoist reducer
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB783963A (en) * 1953-05-07 1957-10-02 Elmeg A device for the control and braking of hoisting devices
CN1440006A (en) * 2002-02-20 2003-09-03 程常现 Tension control experimental facility
CN2566256Y (en) * 2002-08-08 2003-08-13 浙江大学 Automatic detecting platform for electric bicycle
CN1528652A (en) * 2003-10-14 2004-09-15 曾晓东 Belt-drive elevator dragging machine
CN101780928A (en) * 2010-03-19 2010-07-21 杨丽焕 electromagnetic braking tensioning winch
CN201688968U (en) * 2010-05-28 2010-12-29 徐州圣邦机械有限公司 Loading test machine of crane hoist reducer
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109455631A (en) * 2018-12-07 2019-03-12 中联重科股份有限公司 Rope body pre-tightening apparatus, pretensioner systems and derrick crane

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Address after: 415106 Dingcheng City, Changde Province, the town of irrigation district ZOOMLION Creek Industrial Park

Patentee after: Zoomlion Heavy Industry Science & Technology Development Co., Ltd.

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