CN102328883B - Telescopic importing system and crane with same - Google Patents

Telescopic importing system and crane with same Download PDF

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Publication number
CN102328883B
CN102328883B CN 201110212358 CN201110212358A CN102328883B CN 102328883 B CN102328883 B CN 102328883B CN 201110212358 CN201110212358 CN 201110212358 CN 201110212358 A CN201110212358 A CN 201110212358A CN 102328883 B CN102328883 B CN 102328883B
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Prior art keywords
importing
crossbeam
introduction
telescopic
undersetting
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CN102328883A (en
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朱守寨
戴苗
陈宇
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Zoomlion Heavy Industry Science and Technology Co Ltd
Changsha Zoomlion Heavy Industry Science and Technology Development Co Ltd
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Zoomlion Heavy Industry Science and Technology Co Ltd
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Abstract

The invention provides a telescopic importing system and a crane with the same. The telescopic importing system provided by the invention comprises an importing mechanism, a traction mechanism and a supporting mechanism, wherein the importing mechanism comprising an importing transverse beam and an importing section movably arranged on the importing transverse beam; the importing transverse beam is detachably connected with a lower support seat; and the supporting mechanism comprises a supporting section which is arranged at the lower end of one horizontal end face of the importing transverse beam. The crane provided by the invention comprises the telescopic importing system. According to the telescopic importing system provided by the invention, a distance between the end part of the importing mechanism after importing is finished and a gyration centre is greatly reduced, a maximal elevation angle of a crane arm in a hoisting process is increased, a minimal gyration radius in the working process of a movable arm tower crane is reduced, a movable arm variable amplitude range is increased, a purpose of use convenience for hoisting operation is achieved, and the performances of the crane is improved. Furthermore, the telescopic importing system and the crane provided by the invention have good safety and stability, and easiness in operation.

Description

Telescopic importing system and have its hoisting crane
Technical field
The present invention relates to engineering machinery field, more specifically, relate to a kind of Telescopic importing system and have its hoisting crane.
Background technology
Tower crane need to carry out jacking and introduction when increasing the body of the tower height, introducing standard knot needs a cover introduction system to finish, and introduction system is fixed on body of the tower or the undersetting usually.
As shown in Figure 1, introduction system is captiveed joint with the undersetting 10 ' of tower crane, and introduction system generally comprises introduces crossbeam 21 ', pull bar 22 ' and trailer coupling 23 '.Because it is outer apart from the necessary long enough of L that the position of introducing and the needs of safety of operation, the introduction crossbeam 21 ' of introduction system stretch out body of the tower.Yet, long introduction crossbeam easily with the hoist rope interference, affect the tower machine and normally use.
Especially for luffing jib formula hoisting crane, this problem is more outstanding.Because there is the restriction of maximum elevation in the crane arm of movable arm tower crane, by arm point place hoist standard knot that suspension hook slings usually from center of gyration away from, in order standard knot to be put on the dolly of introducing crossbeam smoothly, introduce crossbeam and must stretch out sufficient length, long introduction crossbeam can in use interfere with hoist rope, affects the normal use of tower machine.For fear of the generation of interference problem, the designer often can shorten the luffing scope when design, reduces the crane arm maximum elevation, increases minimum radius of turning.But such design can reduce the lifting performance of hoisting crane, the needed operating needs of out of reach.
Also there is the overhanging flatlike structure of a kind of articulated type in prior art, and as shown in Figure 2, whole introduction system comprises overhanging framework 21 " and overhanging platform 23 " two joints.After introduction is complete, with overhanging platform 23 " inwardly upset, with outside long draw 22 " fold, reach the purpose that reduces introduction system length.But, the platform that structure shown in Figure 2 is just stood the people folds, and does not solve the long problem of crossbeam of introducing.
Summary of the invention
The object of the invention is to provide a kind of can effectively reduce the Telescopic importing system of introducing beam-end and center of gyration distance and the hoisting crane with it.
According to an aspect of the present invention, provide a kind of Telescopic importing system, comprised and introduce mechanism, comprised and introduce crossbeam and be arranged on movably the introduction section that introduces on the crossbeam; Trailer coupling comprises winding section and the hauling rope of walking around movably the winding section, and trailer coupling also comprises rod section, and an end of rod section is connected with the introduction crossbeam, and the other end is connected with the undersetting of hoisting crane; Introducing crossbeam removably is connected with undersetting; Introduction system also comprises supporting mechanism, comprises the support portion, and the support portion is arranged on the lower end of a horizontal end face introducing crossbeam.
Further, the support portion removably is connected with the lower end of undersetting.
Further, the support portion is support roller, introduces crossbeam and is arranged on the support roller with longitudinal movement.
Further, supporting mechanism comprises the first strut and the second strut, the second strut is captiveed joint with support roller, one end of the first strut is connected with undersetting, its other end is connected by the first bearing pin with an end of the second strut, and the other end of the second strut is connected with undersetting by the second bearing pin.
Further, introducing crossbeam is to comprise that the cross-sectional plane of roof, diapire and vertical wall is the structure of I shape, and the support portion is arranged in the groove of a side of introducing crossbeam.
Further, rod section comprises the retractable and flexible part.
Further, flexible portion is chain structure.
Further, be provided with the first otic placode on the upper surface of introduction crossbeam, the lower end of undersetting is provided with the second otic placode, and the first otic placode is connected by the 3rd bearing pin with the second otic placode.
Further, supporting mechanism also comprises vertical limiting section, and vertically limiting section is connected with the lower end of undersetting, and is arranged at the top of introducing crossbeam.
Further, vertically the lower end of limiting section has roller section.
According to another aspect of the present invention, provide a kind of hoisting crane, comprised aforesaid Telescopic importing system.
Adopt Telescopic importing system of the present invention and have its hoisting crane, introduce crossbeam and removably be connected with undersetting, introduction system also comprises supporting mechanism, and its support portion is arranged on the lower end of a horizontal end face of introduction crossbeam.Behind the introduction of finishing standard knot and fixed standard joint, the attaching parts of introducing between crossbeam and the undersetting is removed, because the existence of support portion, can only be along itself and the contacted contact surface horizontal motion in support portion so that introduce crossbeam.Subsequently, by the effect of trailer coupling, hauling rope drive to be introduced crossbeam integral body and is moved and retract to the center of gyration direction, thereby has effectively shortened the extension elongation of introducing crossbeam, has reduced introduction beam-end and center of gyration distance.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of a kind of introduction system of existing hoisting crane;
Fig. 2 is the schematic diagram of the another kind of introduction system of existing hoisting crane;
Fig. 3 is the structural representation according to Telescopic importing system of the present invention;
Fig. 4 is the mounting structure schematic diagram according to Telescopic importing system of the present invention;
Fig. 5 is the A place partial enlarged drawing of Fig. 4;
Fig. 6 is according to the position view before the introduction standard knot of Telescopic importing system of the present invention;
Fig. 7 is according to the position view behind the introduction standard knot of Telescopic importing system of the present invention;
Fig. 8 is main TV structure and the position view according to the support roller of Telescopic importing system of the present invention;
Fig. 9 is left TV structure and the position view according to the support roller of Telescopic importing system of the present invention;
Figure 10 is the scheme of installation according to the support roller of Telescopic importing system of the present invention;
Figure 11 is the structural representation after installing according to the support roller of Telescopic importing system of the present invention;
Figure 12 is that the introduction crossbeam according to Telescopic importing system of the present invention stretches out the structural representation under the state;
Figure 13 is according to the structural representation under the introduction crossbeam indentation state of Telescopic importing system of the present invention;
Figure 14 is the first schematic diagram according to the mode of traction of the steel rope of Telescopic importing system of the present invention; And
Figure 15 is the second schematic diagram according to the mode of traction of the steel rope of Telescopic importing system of the present invention.
The specific embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Such as Fig. 3, Fig. 4 and shown in Figure 5, according to an aspect of the present invention, provide a kind of Telescopic importing system, comprise and introduce mechanism 10, comprise and introduce crossbeam 11 and be arranged on movably the introduction section 12 that introduces on the crossbeam 11; Trailer coupling 20, the hauling rope 24 that comprises winding section 23 and walk around movably winding section 23, trailer coupling 20 also comprises rod section 22, and an end of rod section 22 is connected with introduction crossbeam 11, and the other end is connected with the undersetting 40 of hoisting crane; Introducing crossbeam 11 removably is connected with undersetting 40; Introduction system also comprises: supporting mechanism, comprise support portion 62, and support portion 62 is arranged on the lower end of a horizontal end face introducing crossbeam 11.
Tower crane needs jacking and introduction when increasing the body of the tower height, introduce standard knot process need one cover introduction system and finish.Referring to Figure 14 and Figure 15, introduction system comprises the trailer coupling 20 that is fixed on undersetting 40 1 sides, and trailer coupling 20 comprises winding section 23, is wound with hauling rope 24 on the winding section 23, and in the present embodiment, winding section 23 is reel, and hauling rope 24 is steel rope.An end was put rope when reel rotated, an end rope closing, and steel rope one end connects introduction section 12 front ends, and the other end connects introduction section 12 tail ends, forms the sealing wiring.Introduction section 12 is positioned at and introduces on the crossbeam 11, can finish introduction by the rolling of the roller in the introduction section 12.Referring to Fig. 6 and Fig. 7, during introduction, by the suspension hook 14 that hoists of the crane arm arm point lifting beam 13 of slinging, the standard knots 50 below the lifting beam 13 are placed in the introduction section 12 that introduces mechanism 10, in the present embodiment, introduction section 12 is for introducing dolly.Then use the suspension hook 14 that hoists that lifting beam 13 is removed, driving by trailer coupling 20, drive introduction dolly and the center of gyration position movement of standard knot 50 along introduction crossbeam 11 tracks to hoisting crane by hauling rope 24, until the center of standard knot 50 is moved to center of gyration, finish introduction.Introduction finish and fixed standard joint 50 after, standard knot 50 separates with the introduction dolly, this moment counter-rotation trailer coupling 20 rocking handle, the reel rotation direction is opposite when introducing, steel rope will be introduced the end that dolly drags to the external part of introducing crossbeam 11, being provided with baffle plate on its end, will to introduce little car bumper dead, can not move again.
For so that introduction crossbeam 11 can stretch by along continuous straight runs, introduce crossbeam 11 and removably be connected with undersetting 40.Referring to Figure 12 and Figure 13, behind the introduction of finishing standard knot 50 and fixed standard joint 50, the attaching parts of introducing between crossbeam 11 and the undersetting 40 to be removed, introduction crossbeam 11 contacts with the upper surface of support portion 62 and supports by support portion 62 fully.Subsequently, go into overdrive to be rotated further the rocking handle of trailer coupling 20, owing to being subjected to the pulling force of steel rope, introducing crossbeam 11 whole past revolution center positions and move retraction, thereby effectively shortened the extension elongation of introducing crossbeam, reduced introduction beam-end and center of gyration distance.In the time need to introducing next time, the rocking handle of counter-rotation trailer coupling 20 is after steel rope drive introduction crossbeam 11 stretches out, square rotates the rocking handle of trailer coupling 20 again, to introduce dolly and be drawn to introduction crossbeam 11 ends, and connect and introduce crossbeam 11 and undersetting 40, can again introduce.
Support by supporting mechanism, make introduction crossbeam 11 can stretch out with indentation, introduction mechanism 10 ends of introducing after finishing and the distance of center of gyration are reduced greatly, thereby the problem that hoist rope and introduction system are interfered when having solved tower machine big-elevation, the maximum elevation of crane arm when having increased lifting has reduced the minimum radius of turning when movable arm tower crane is worked, and has increased the scope of luffing jib, reach lifting purpose easy for operation, improved the performance of hoisting crane.
In the present embodiment, as shown in Figure 10 and Figure 11, preferably, be provided with the first otic placode 25 on the upper surface of introduction crossbeam 11, the lower end of undersetting 40 is provided with the second otic placode 41, the first otic placodes 25 and is connected by the 3rd bearing pin 42 with the second otic placode 41.
The second otic placode 41 on the undersetting 40 is the monaural plate, and the first otic placode 25 of introducing on the crossbeam 11 is the ears plate.When needs were introduced, introduction system was stretched out, and will introduce crossbeam 11 and undersetting 40 links together by the 3rd bearing pin 42.Such structure has four groups.Before the introduction crossbeam 11 of retracting, take down four the second bearing pins 42 that are used for fixing and support introduction system, introduction system namely supports by support roller fully, and can move along the rotating direction of roller.Before will introducing operation, the second otic placode 41 and the first otic placode 25 are connected and fixed by four the second bearing pins 42, introduce again operation.
As shown in Figure 10 and Figure 11, support portion 62 removably is connected with the lower end of undersetting 40.
Support portion 62 is arranged on the lower end of undersetting 40, and is arranged to detachable connection.Referring to Fig. 6 and Fig. 7, when standard knot 50 is introduced, pull down support portion 62, to prevent the motion generation interference to the introduction dolly that drives standard knot 50 motions, can move to smoothly the center of gyration of tower crane so that introduce dolly, and finish the introduction of standard knot 50.Therefore, after introducing process is finished, introduce support portion 62 is installed when crossbeam 11 needs indentation again.
Referring to Fig. 8 and Fig. 9, preferably, support portion 62 is support roller, introduces crossbeam 11 and is arranged on the support roller with longitudinal movement.
Support portion 62 is support roller, and rollably be arranged on the lower end of a horizontal end face introducing crossbeam 11, by supporting the setting of roller, not only can play a supporting role to introducing crossbeam 11, and can reduce to introduce the friction force that relative motion produces between crossbeam 11 and the support roller, so that introduce the indentation of crossbeam 11 and stretch out more smooth and easy that motion becomes.
As shown in Figure 10 and Figure 11, supporting mechanism comprises the first strut 63 and the second strut 64, the second strut 64 is captiveed joint with support roller, one end of the first strut 63 is connected with undersetting 40, its other end is connected by the first bearing pin 43 with an end of the second strut 64, and the other end of the second strut 64 is connected with undersetting 40 by the second bearing pin 44.
After the supporting mechanism installation, structure on the bottom surface of the first strut 63, the second strut 64 and undersetting 40 forms firm triangular structure together, support roller firmly is fixed on the lower end of undersetting 40, supports introducing crossbeam 11 so that support roller can be stable.Pass through the first bearing pin 43 between the three and be connected bearing pin 44 connections, can play stable connection function, consist of again detachable connection, and remove efficient and convenient.
Referring to Fig. 8 and Fig. 9, according to one embodiment of present invention, support roller has four groups, and be installed on below the undersetting 40 be used for introduce the otic placode that crossbeam is connected near.Referring to Figure 11, four groups of support rollers are the symmetrical inboard of introducing crossbeam 11 that is arranged in twos, thereby can carry out spacing on the horizontal direction to introducing crossbeam 11, prevent from introducing and introduce crossbeam 11 relative undersettings 40 after attaching parts between crossbeam 11 and the undersetting 40 is removed sway (take the bearing of trend of introducing crossbeam 11 as front and back, the left and right directions of the introduction crossbeam 11 in Figure 11 as about) occur.Hence one can see that, and support roller can be played a supporting role and directional tagging simultaneously.
As shown in Figure 10 and Figure 11, introducing crossbeam 11 is to comprise that the cross-sectional plane of roof, diapire and vertical wall is the structure of I shape, and support portion 62 is arranged in the groove of a side of introducing crossbeam 11.
In the present embodiment, introducing crossbeam 11 is i-beam structure, comprises roof is connected a horizontal part and is connected two horizontal parts with diapire vertical wall.Support portion 62 is arranged on the lower end of upper roof and is arranged in the groove of a side of introducing crossbeam 11, can play a supporting role to introducing crossbeam 11, can play position-limiting action to it again.
Such as Figure 12 and shown in Figure 13, rod section 22 comprises the retractable and flexible part.Preferably, flexible portion is chain structure.
Rod section 22 is comprised of arm-tie part and flexible portion, and its flexible portion is positioned at the bottom of rod section 22.One end of rod section 22 connects the otic placode of undersetting 40 1 sides, and the other end connects the otic placode of introducing crossbeam 11 upper ends.When introducing crossbeam 11 indentation, the flexible portion of rod section 22 is also retracted, and when introduction crossbeam 11 stretched out, the flexible portion of rod section 22 was also stretching.Hence one can see that, and the structure of rod section 22 can fully cooperate to be introduced the indentation of crossbeam 11 below undersetting 40 and stretch out.In the present embodiment, flexible portion is chain structure, introduces under the flexible prerequisite of crossbeam 11 guaranteeing to cooperate, and has enough intensity to play stretching action to it when introducing crossbeam 11 and stretch out, to strengthen the stability of introducing crossbeam 11.
Such as Fig. 8, Fig. 9 and Figure 10 and shown in Figure 11, supporting mechanism also comprises vertical limiting section 61, and vertically limiting section 61 is connected with the lower end of undersetting 40, and is arranged at the top of introducing crossbeam 11.
Vertically limiting section 61 is fixedly mounted on the lower end of undersetting 40, before and after introducing, be positioned at always introduce crossbeam 11 above, and carry out on the spacing basis of left and right directions introducing crossbeam 11 at support roller, be arranged on the top of introducing crossbeam 11, prevent from introducing crossbeam play upwards occurs when stretching out and retract.Therefore, the vertically setting of limiting section 61 and support roller, can only move along the bearing of trend of introducing crossbeam when stretching out and retract so that introduce crossbeam 11, guaranteed to introduce the stability of crossbeam 11 motions, can be owing to stressed not excessive or other is former thereby depart from expansion rail thereby introduce crossbeam 11.
As shown in Figure 10 and Figure 11, preferably, vertically the lower end of limiting section 61 has roller section.
In order to guarantee to introduce the particularity of crossbeam 11 motions, the lower end of vertical limiting section 61 is contacted with introduction crossbeam 11 or only stay very little slit.Under this kind situation, in vertical limiting section 61 lower ends roller section is set, to reduce may and introduce the friction between the crossbeam 11.
According to another aspect of the present invention, provide a kind of hoisting crane, comprised aforesaid Telescopic importing system.
Because other parts of hoisting crane of the present invention are prior art, will repeat no more at this.
As can be seen from the above description, the above embodiments of the present invention have realized following technique effect:
Supporting mechanism be arranged so that introducing crossbeam can stretch out and indentation, the introduction mechanism end of introducing after finishing and the distance of center of gyration are reduced greatly, thereby the problem that hoist rope and introduction system are interfered when having solved tower machine big-elevation, increased the maximum elevation of crane arm when lifting, minimum radius of turning when having reduced movable arm tower crane work, increase the scope of luffing jib, reached lifting purpose easy for operation, improved the performance of hoisting crane.In addition, safety and stability of the present invention is good, and is easy to operate.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (11)

1. Telescopic importing system comprises:
Introduce mechanism (10), comprise and introduce crossbeam (11) and be arranged on movably introduction section (12) on the described introduction crossbeam (11);
Trailer coupling (20), the hauling rope (24) that comprises winding section (23) and walk around movably described winding section (23), described trailer coupling (20) also comprises rod section (22), one end of described rod section (22) is connected with described introduction crossbeam (11), and the other end is connected with the undersetting (40) of hoisting crane;
It is characterized in that:
Described introduction crossbeam (11) removably is connected with described undersetting (40);
Described introduction system also comprises:
Supporting mechanism comprises support portion (62), and described support portion (62) are arranged on the lower end of a horizontal end face of described introduction crossbeam (11), and described introduction crossbeam (11) telescopically is arranged on the described support portion (62).
2. Telescopic importing system according to claim 1 is characterized in that, described support portion (62) removably are connected with the lower end of described undersetting (40).
3. Telescopic importing system according to claim 2 is characterized in that, described support portion (62) are support roller, and described introduction crossbeam (11) is arranged on the described support roller with longitudinal movement.
4. Telescopic importing system according to claim 3, it is characterized in that, described supporting mechanism comprises the first strut (63) and the second strut (64), described the second strut (64) is captiveed joint with described support roller, one end of described the first strut (63) is connected with described undersetting (40), its other end is connected by the first bearing pin (43) with an end of described the second strut (64), and the other end of described the second strut (64) is connected with described undersetting (40) by the second bearing pin (44).
5. Telescopic importing system according to claim 3, it is characterized in that, described introduction crossbeam (11) be comprise roof, diapire and vertically the cross-sectional plane of wall be the structure of I shape, described support portion (62) are arranged in the groove of a side of described introduction crossbeam (11).
6. Telescopic importing system according to claim 1 is characterized in that, described rod section (22) comprises the retractable and flexible part.
7. Telescopic importing system according to claim 6 is characterized in that, described flexible portion is chain structure.
8. Telescopic importing system according to claim 4, it is characterized in that, be provided with the first otic placode (25) on the upper surface of described introduction crossbeam (11), the lower end of described undersetting (40) is provided with the second otic placode (41), and described the first otic placode (25) is connected by the 3rd bearing pin (42) with described the second otic placode (41).
9. each described Telescopic importing system in 8 according to claim 1, it is characterized in that, described supporting mechanism also comprises vertical limiting section (61), and described vertical limiting section (61) is connected with the lower end of described undersetting (40), and is arranged at the top of described introduction crossbeam (11).
10. Telescopic importing system according to claim 9 is characterized in that, the lower end of described vertical limiting section (61) has roller section.
11. a hoisting crane is characterized in that, comprises each described Telescopic importing system in the claim 1 to 10.
CN 201110212358 2011-07-27 2011-07-27 Telescopic importing system and crane with same Active CN102328883B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN 201110212358 CN102328883B (en) 2011-07-27 2011-07-27 Telescopic importing system and crane with same

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CN102328883B true CN102328883B (en) 2013-03-27

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103058070B (en) * 2012-12-28 2014-12-10 徐州重型机械有限公司 An introducing beam and a tower crane
CN103171980B (en) * 2013-04-03 2015-07-15 中联重科股份有限公司 Tower crane and launching beam and launching system thereof
CN103342300B (en) * 2013-07-19 2015-04-01 中联重科股份有限公司 Tower crane, as well as lead-in system and standard knot lead-in method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007131453A (en) * 2005-11-11 2007-05-31 Industrial Leasing Corp Climbing crane
CN201265258Y (en) * 2008-09-08 2009-07-01 长沙科达建设机械制造有限公司 Climbing frame of concrete spreader
CN201313792Y (en) * 2008-11-18 2009-09-23 江麓机电科技有限公司 Lengthened hinge introducing platform of tower crane
CN201678383U (en) * 2010-05-06 2010-12-22 中国建筑第二工程局有限公司 Tower crane standard joint leading-in device

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