CN101792093A - Crawler crane and tension device thereof - Google Patents

Crawler crane and tension device thereof Download PDF

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Publication number
CN101792093A
CN101792093A CN200910005622A CN200910005622A CN101792093A CN 101792093 A CN101792093 A CN 101792093A CN 200910005622 A CN200910005622 A CN 200910005622A CN 200910005622 A CN200910005622 A CN 200910005622A CN 101792093 A CN101792093 A CN 101792093A
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CN
China
Prior art keywords
arm
strain component
ties
jib
tie
Prior art date
Application number
CN200910005622A
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Chinese (zh)
Inventor
孙丽
余钦伟
韩向芹
孟进军
Original Assignee
徐工集团工程机械股份有限公司建设机械分公司
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Priority to CN200910005622A priority Critical patent/CN101792093A/en
Publication of CN101792093A publication Critical patent/CN101792093A/en

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Abstract

The invention discloses a tension device used for a crawler crane. The tension device comprises a first tensioning component and a second tensioning component, wherein the first tensioning component is connected with the tail end of a crane jib and the tail end of a mast; the first end of the second tensioning component is connected between two end parts of the crane jib; and the second end of the second tensioning component is connected between two end parts of the first tensioning component. The tension device can smoothly realize amplitude of variation of the crane jib and effectively relieve the deflection of the crane jib. Compared with steel wire ropes and waist lines in the prior art, the tension device has a simple structure. The length of the second tensioning component is obviously shorter than the length of the waist lines in the prior art, so the cost is lower and the operation is convenient.

Description

Crawler crane and take-up device thereof
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of take-up device that is used for crawler crane.The invention still further relates to a kind of crawler crane that comprises above-mentioned take-up device.
Background technology
Along with user's improving constantly to hoisting weight, scope of work requirement, the development that crawler crane maximizes is more and more faster, length, the cross section of the jib of crawler crane all continue to increase, therefore the deadweight of described jib is also increasing, thereby cause that described jib may occur than deep camber under the mode of operation, it obviously is deletrious that described jib occurs than deep camber, causes it impaired most probably, the above-mentioned amount of deflection of therefore should taking measures to eliminate or alleviate.
Can be by the elimination of waist rope being set or alleviating above-mentioned amount of deflection.
Please refer to Fig. 1 to Fig. 3, Fig. 1 is the structural representation of a kind of crawler crane in the prior art; Fig. 2 is the jib structure scheme drawing of crawler crane shown in Figure 1; Fig. 3 is the partial enlarged drawing at A position among Fig. 2.
At present, a kind of representative type crawler crane comprises caterpillar chassis and turntable, and the bottom of mast 11 is articulated on the described turntable, and the bottom of jib 12 is articulated on the described turntable equally, is provided with steel rope 13 between the top of the top of mast 11 and jib 12.Mast 11 can rise under the driving of associated components, thereby makes steel rope 13 tensionings, and then jib 12 is rotated to realize the luffing of jib 12 around its bottom.
In order to alleviate the amount of deflection of jib 12, waist rope 14 can be set.First end of waist rope 14 connects the top of mast 11, and its second end is connected in the appropriate location between jib 12 both ends, second end of waist rope 14 can be connected in the position that may produce on the jib 12 than high camber usually.Obviously, when in running order, steel rope 13 and the 14 equal tensionings of waist rope.Owing to may take place to have applied the pulling force that makes progress than the position of high camber at jib 12 by waist rope 14, the part gravity of jib 12 is balanced, so the overall force-bearing situation of jib 12 improves, and its amount of deflection will alleviate.
The length of waist rope 14 is longer, and this is not easy to operation, and has expended higher cost.In addition because the length of jib 12 will change under the different work state, between various operating conditions when conversion the position is set need changes of waist rope 14 two ends, operation process is therefore comparatively complicated.Moreover, as the steel rope of waist rope 14 processing and manufacturing difficulty comparatively not only, and might come off in joint location.As shown in Figure 3, first ran, 141 jointing parts, 143, the second rans 142 connect fork part 144, joint component 143 with connect fork part 144 and be connected by bearing pin 145; Obviously, between first ran 141 and the joint component 143, and second ran 142 and connect between the fork part 144 and might come off, thereby bigger potential safety hazard appears.
Therefore, how simplifying structure, the operation when being reduced between each operating condition conversion of crawler crane, how to improve the safety performance of crawler crane, is the present technical issues that need to address of those skilled in the art.
Summary of the invention
The purpose of this invention is to provide a kind of take-up device that is used for crawler crane, it is simple in structure, easy to operate, and has lower cost.Another object of the present invention provides a kind of crawler crane that comprises above-mentioned take-up device.
For solving the problems of the technologies described above, the invention provides a kind of take-up device, be used for crawler crane, described crawler crane comprises jib and mast, both all are articulated on the turntable with the bottom; Described take-up device comprises first strain component and second strain component, described first strain component connects the terminal and described mast end of described jib, first end of described second strain component is connected between the described jib both ends, and second end of described second strain component is connected between the described first strain component both ends.
Preferably, described first strain component alternately is connected in series with two arm-ties by single arm-tie and forms, and perhaps alternately is connected in series with three arm-ties by two arm-ties to form; Described single arm-tie and two arm-ties or the described pair of arm-tie and three arm-ties are hinged by bearing pin.
Preferably, second end of described second strain component is selected by arbitrary described bearing pin and described first strain component hinged.
Preferably, be provided with the connection otic placode along the length direction of described jib, first end of described second strain component is hinged by described connection otic placode and described jib.
Preferably, described second strain component has the drawplate type structure.
Preferably, the length of described second strain component can be adjusted.
Preferably, described second strain component comprises single arm-tie of at least one joint and the two arm-ties of at least one joint, the two arm-ties of perhaps at least one joint and at least one joint three arm-ties; Described single arm-tie and two arm-ties or the described pair of arm-tie and three arm-ties are hinged by connecting pin.
Preferably, at least one comprises at least two connecting bores that distribute along its length in single arm-tie of described second strain component, two arm-tie, three arm-ties, so that described connecting pin is selected to be arranged in arbitrary described connecting bore.
Preferably, the equal arm-tie of single arm-tie of described second strain component, two arm-tie or three arm-ties for forming by a blanking of high-strength panel.
The present invention also provides a kind of crawler crane, comprises above-mentioned each described take-up device.
Take-up device provided by the present invention comprises first strain component and second strain component, described first strain component connects the terminal and described mast end of described jib, first end of described second strain component is connected between the described jib both ends, and second end of described second strain component is connected between the described strain component both ends.Described take-up device can successfully be realized the luffing of jib, and can effectively alleviate the amount of deflection of jib; Compare with the waist rope with steel rope of the prior art, described take-up device simple in structure, the length of described second strain component significantly are shorter than the length of prior art middle part of the side rope, and cost is therefore lower, and easy to operate.
In another embodiment, the length of described second strain component can be adjusted.When the length of jib changes under different operating conditions, the connection location at the described second strain component two ends can remain unchanged, the length that only needs suitably to adjust described second strain component can make it be applicable to new operating mode, so just avoid loaded down with trivial details dismounting operation, significantly simplified operating process.Simultaneously, the length of described second strain component can be adjusted its comformability is significantly improved, and arm deflection upward in the time of can effectively avoiding lift heavy has further improved the lifting performance of arm.
In another embodiment, single arm-tie of described second strain component, two class of drawing and three arm-ties form by a blanking of high-strength panel, with respect to by joint, connect fork bonded assembly steel rope, second strain component provided by the present invention helps improving the safety of equipment at the junction difficult drop-off.
Description of drawings
Fig. 1 is the structural representation of a kind of crawler crane in the prior art;
Fig. 2 is the jib structure scheme drawing of crawler crane shown in Figure 1;
Fig. 3 is the partial enlarged drawing at A position among Fig. 2;
Fig. 4 is the structural representation of the present invention's crawler crane that a kind of specific embodiment provides;
Fig. 5 is the jib structure scheme drawing of crawler crane shown in Figure 4;
Fig. 6 is the partial enlarged drawing at B position among Fig. 5;
Fig. 7 is that the C of single arm-tie and double clamp among Fig. 6 is to view.
The specific embodiment
Core of the present invention provides a kind of take-up device that is used for crawler crane, and it is simple in structure, easy to operate, and has lower cost.Another core of the present invention provides a kind of crawler crane that comprises above-mentioned take-up device.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the structural representation of the present invention's crawler crane that a kind of specific embodiment provides; Fig. 5 is the jib structure scheme drawing of crawler crane shown in Figure 4.
In a kind of specific embodiment, crawler crane provided by the present invention comprises caterpillar chassis and turntable, and the bottom of mast 21 is articulated on the described turntable, and the bottom of jib 22 is articulated on the described turntable equally.
Under the principal arm operating mode, jib 22 can be understood as and only comprises principal arm; Under tower auxiliary operating mode, jib 22 can be understood as the integral body that comprises principal arm, auxiliary.
For the smooth amount of deflection that realizes the luffing of jib 22 and alleviate jib 22, can between mast 21 and jib 22, take-up device be set.
Described take-up device comprises first strain component 23 and second strain component 24.
First strain component 23 is arranged between the top of the top of mast 21 and jib 22, when being in operating condition, and first strain component, 23 in tension, thus between the top of the top of mast 21 and jib 22, apply suitable pulling force.
Can mast 21 be risen by drive element, can make described crawler crane change operating condition over to like this, and make 23 tensionings of first strain component, rotate around its bottom, realize the luffing of jib 22 thereby drive jib 22.
First end of second strain component 24 is connected between the both ends of jib 22, and particular location can further be determined according to actual condition, usually above-mentioned first end is connected in the position that may produce on the jib 22 than high camber.Second end of second strain component 24 is connected between the both ends of first take-up device 23, and as shown in Figure 5, above-mentioned second end can be connected in the middle part of first take-up device 23 usually.
Owing to may take place to have applied the pulling force that makes progress than the position of high camber at jib 22 by second strain component 24, the part gravity of jib 22 is balanced, so its overall force-bearing situation improves, and its amount of deflection will significantly alleviate.
The end of first end of second strain component 24 and second end, jib 22, above-mentioned three distribution triangular in shape, therefore the top of mast 21 can act on the end and the bigger position of middle part amount of deflection thereof of jib 22 simultaneously by first strain component 23 and second strain component 24, described take-up device thereby can successfully realize the luffing of jib 22, and can effectively alleviate the amount of deflection of jib 22; Compare with the waist rope with steel rope of the prior art, described take-up device simple in structure, the length of second strain component 24 significantly are shorter than the length of prior art middle part of the side rope, and cost is therefore lower, and easy to operate.
Please also refer to Fig. 6 and Fig. 7, Fig. 6 is the partial enlarged drawing at B position among Fig. 5; Fig. 7 is that the C of single arm-tie and double clamp among Fig. 6 is to view.
Can the tracked construction equipment in the above-mentioned specific embodiment be improved.
First strain component 23 can be formed by arm-tie, and non-traditional steel rope.For example, first strain component 23 can be formed by more piece arm-tie serial connection: single arm-tie 231 can alternately be connected in series with pair arm-ties 232, thereby both connect from beginning to end by bearing pin and form first strain component 23.Increasing single arm-tie 231 can be with first strain component, 23 lengthening with the number of two arm-ties 232.Certainly, first strain component 23 can also be formed by two arm-ties of more piece and more piece three arm-ties serial connection in theory.
At this moment, second end of second strain component 24 can be hinged by the above-mentioned bearing pin and first strain component 23.As the case may be, second end of second strain component 24 can be selected the jointed shaft of a suitable person as itself and first strain component 23 among a plurality of described bearing pins.
As previously mentioned, first end of second strain component 24 is connected in the middle part of jib 22.Connection otic placode (not adding Reference numeral among the figure) can be set on jib 22, and first end of second strain component 24 can be connected with jib 22 by connecting otic placode.
Structure to second strain component 24 also can be carried out some improvement.
For example, second strain component 24 can have the drawplate type structure.Second strain component 24 can comprise two arm-ties 241 of at least one joint and the single arm-tie 242 of at least one joint, and two arm-ties 241 are connected by connecting pin 243 with single arm-tie 242.Two arm-ties 241 and single arm-tie 242 are a joint among Fig. 6, obviously should not be limited to this.Certainly, second strain component 24 can also comprise the two arm-ties of at least one joint and at least one joint three arm-ties, and two arm-ties are connected by connecting pin equally with three arm-ties.This specific embodiment only describes in detail to second strain component 24 that is made of two arm-ties 241 and single arm-tie 242.
Can take measures, the length of second strain component 24 can be adjusted.For example, offer at least two connecting bores 2411 on two arm-ties 241, each connecting bore 2411 distributes along the length direction of two arm-ties 241, and connecting bore 2411 also can be arranged at other arm-ties, in for example single arm-tie 242 or three arm-ties.Like this, connecting pin 243 can be arranged in arbitrary connecting bore 2411, and the length of second strain component 24 just can change.Certainly, the length that changes second strain component 24 by other modes also is fine.
At this moment, when the length of jib 22 changes under different operating conditions, the connection location at second strain component, 24 two ends can remain unchanged, the length that only needs suitably to adjust second strain component 24 can make it be applicable to new operating mode, so just avoid loaded down with trivial details dismounting operation, significantly simplified operating process.Simultaneously, the length of second strain component 24 can be adjusted its comformability is significantly improved, and then arm 22 deflection upward can effectively avoid lift heavy the time, has improved the lifting performance of arm 22.
In addition, single arm-tie 242 of second strain component 24 and two arm-tie 241 all can be formed by a blanking of high-strength panel; With respect to by joint, connect fork bonded assembly steel rope, like this, not only processing technology is simple, and can effectively avoid coming off in the junction, helps improving the safety of equipment.
The structure of other parts of crawler crane provided by the present invention please refer to prior art, and this paper repeats no more.
More than crawler crane provided by the present invention and take-up device thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.

Claims (10)

1. take-up device, be used for crawler crane, described crawler crane comprises jib and mast, both all are articulated on the turntable with the bottom, it is characterized in that described take-up device comprises first strain component and second strain component, described first strain component connects the terminal and described mast end of described jib, first end of described second strain component is connected between the described jib both ends, and second end of described second strain component is connected between the described first strain component both ends.
2. take-up device as claimed in claim 1 is characterized in that, described first strain component alternately is connected in series with two arm-ties by single arm-tie and forms, and perhaps alternately is connected in series with three arm-ties by two arm-ties to form; Described single arm-tie and two arm-ties or the described pair of arm-tie and three arm-ties are hinged by bearing pin.
3. take-up device as claimed in claim 2 is characterized in that, second end of described second strain component is selected by arbitrary described bearing pin and described first strain component hinged.
4. take-up device as claimed in claim 3 is characterized in that, is provided with the connection otic placode along the length direction of described jib, and first end of described second strain component is hinged by described connection otic placode and described jib.
5. crawler crane as claimed in claim 1 is characterized in that, described second strain component has the drawplate type structure.
6. take-up device as claimed in claim 5 is characterized in that the length of described second strain component can be adjusted.
7. take-up device as claimed in claim 6 is characterized in that, described second strain component comprises single arm-tie of at least one joint and the two arm-ties of at least one joint, the two arm-ties of perhaps at least one joint and at least one joint three arm-ties; Described single arm-tie and two arm-ties or the described pair of arm-tie and three arm-ties are hinged by connecting pin.
8. take-up device as claimed in claim 7, it is characterized in that, at least one comprises at least two connecting bores that distribute along its length in single arm-tie of described second strain component, two arm-tie, three arm-ties, so that described connecting pin is selected to be arranged in arbitrary described connecting bore.
9. take-up device as claimed in claim 8 is characterized in that, single arm-tie of described second strain component, two arm-tie or three arm-ties are the arm-tie for being formed by a blanking of high-strength panel all.
10. a crawler crane is characterized in that, comprises as each described take-up device of claim 1 to 9.
CN200910005622A 2009-01-20 2009-01-20 Crawler crane and tension device thereof CN101792093A (en)

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Application Number Priority Date Filing Date Title
CN200910005622A CN101792093A (en) 2009-01-20 2009-01-20 Crawler crane and tension device thereof

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Application Number Priority Date Filing Date Title
CN200910005622A CN101792093A (en) 2009-01-20 2009-01-20 Crawler crane and tension device thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102491203A (en) * 2011-12-13 2012-06-13 三一集团有限公司 Crane and luffing mechanism thereof
CN102718158A (en) * 2012-06-27 2012-10-10 三一汽车起重机械有限公司 Superlift device and crane
CN105035977A (en) * 2015-09-10 2015-11-11 徐工集团工程机械股份有限公司 Waist line device, cantilever crane bearing device and crane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102491203A (en) * 2011-12-13 2012-06-13 三一集团有限公司 Crane and luffing mechanism thereof
CN102718158A (en) * 2012-06-27 2012-10-10 三一汽车起重机械有限公司 Superlift device and crane
CN105035977A (en) * 2015-09-10 2015-11-11 徐工集团工程机械股份有限公司 Waist line device, cantilever crane bearing device and crane

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Application publication date: 20100804