CN204384765U - Telescopic jib mechanism and hoisting crane - Google Patents
Telescopic jib mechanism and hoisting crane Download PDFInfo
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- CN204384765U CN204384765U CN201420814612.XU CN201420814612U CN204384765U CN 204384765 U CN204384765 U CN 204384765U CN 201420814612 U CN201420814612 U CN 201420814612U CN 204384765 U CN204384765 U CN 204384765U
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Abstract
The utility model discloses a kind of telescopic jib mechanism, this telescopic jib mechanism comprises arm, this arm comprises interconnective N number of arm joint, telescopic jib mechanism also comprises telescopic oil cylinder, on the diapire that the two ends of this telescopic oil cylinder are connected to the i-th arm joint and on the inside face of the sidewall of the i-th+1 arm joint, N-2 arm joint, N-1 arm joint and N arm joint are connected with and stretch out steel rope and retraction steel rope, when telescopic oil cylinder control N-1 arm joint flexible time, stretch out steel rope and retraction steel rope and can control N arm joint and save with N-1 arm and jointly stretch.A kind of hoisting crane is also provided.By technique scheme, realized the flexible of the jib of multi-arm joint by simple structure, control more reliable, reducing mechanism complexity, avoid arm to save spacing between cylindrical shell excessive, increase lateral rigidity.Be convenient to the adjustment of rope capacity, avoid occurring steel rope broken lot phenomenon.
Description
Technical field
The utility model relates to engineering machinery field, particularly, relates to a kind of telescopic jib mechanism and hoisting crane.
Background technology
Crane arm usually adopts steel rope to arrange and realizes telescoping boom, and the arrangement structure more complicated of steel rope row.After hoisting crane work a period of time, there is certain prolongation amount in steel rope.Cannot regulate because the steel rope stretched out is arranged on arm inside, the distance between arm relies on rope capacity to ensure completely.Further, in the end the pulley bending spring of the afterbody of a joint jib is less, and steel rope is walked around and used a period of time easy broken lot.
And in the prior art, be usually provided with larger pulley between arm joint, therefore make the spacing dimension between the cylindrical shell of the arm joint be connected comparatively large, therefore lateral rigidity reduces, and easily side sway occurs when jib side is carried.
Utility model content
The purpose of this utility model is to provide a kind of telescopic jib mechanism, and the structure of this telescopic jib mechanism simplifies more.
To achieve these goals, the utility model provides a kind of telescopic jib mechanism, and this telescopic jib mechanism comprises arm, and this arm comprises interconnective N number of arm joint, and described N number of arm joint stretches out direction along it and is followed successively by the 1st arm joint to N arm joint, wherein,
Described telescopic jib mechanism also comprises telescopic oil cylinder, on the diapire that the two ends of this telescopic oil cylinder are connected to described i-th arm joint and on the inside face of the sidewall of described i-th+1 arm joint, i=1, N-2, N be greater than 2 positive integer, described N-2 arm joint, N-1 arm joint and N arm joint are connected with and stretch out steel rope and retraction steel rope, when described telescopic oil cylinder control described N-1 arm joint flexible time, described in stretch out steel rope and described retraction steel rope and can control described N arm joint and save with N-1 arm and jointly stretch.
Preferably, the cylinder body of described telescopic oil cylinder is connected to the bottom of described i-th arm joint, and the piston rod of described telescopic oil cylinder is connected on the inwall of described i-th+1 arm joint.
Preferably, the inside face of the sidewall of the head of described N-1 arm joint is provided with the first pulley part, the outside face of the sidewall of the afterbody of described N arm joint is provided with the second pulley part, this first pulley part is arranged in couples relative to the central axis of described arm, the head of described N-2 arm joint is provided with the fixed part arranged in couples relative to the central axis of described arm
The described fixed part of described one end and side of stretching out steel rope is connected, the other end walk around successively described first pulley part of side, described second pulley part and opposite side described first pulley part and be connected with the described fixed part of opposite side.
Preferably, described second pulley part is arranged on the central axis of described arm.
Preferably, described fixed part extends to outside the sidewall of described N-2 arm joint, and described in stretch out steel rope and described fixed part connection location can regulate.
Preferably, the diapire of the afterbody of described N-1 arm joint is provided with the 3rd pulley part, the head of described N-2 arm joint is provided with fixed part,
The first end of described retraction steel rope is connected with described fixed part, and the second end of described retraction steel rope is walked around described 3rd pulley part and is connected with the afterbody that described N arm saves.
Preferably, described 3rd pulley part is arranged in couples relative to the central axis of described arm, and described retraction steel rope is multiple one to one with described 3rd pulley part.
Preferably, the diapire of the afterbody of described N-1 arm joint is provided with the 3rd pulley part, the outside face of the sidewall of the head of described N arm joint is provided with the 4th pulley part, 3rd pulley part is arranged in couples relative to the central axis of described arm, the head of described N-2 arm joint is provided with the fixed part arranged in couples relative to the central axis of described arm
The first end of described retraction steel rope is connected with the described fixed part of side, the second end of described retraction steel rope walk around successively described 3rd pulley part of side, the 4th pulley part and opposite side described 3rd pulley part and be connected with the described fixed part of opposite side.
Preferably, described fixed part extends to outside the sidewall of described N-2 arm joint, and described in stretch out steel rope and described fixed part (8) connection location can regulate.
Another object of the present utility model is to provide a kind of hoisting crane, and wherein, this hoisting crane comprises according to telescopic jib mechanism described in the utility model.
Technique scheme achieves the flexible of the jib of multi-arm joint by simple structure, not only control more reliable, reduce mechanical complications, and between the arm joint cylindrical shell avoided arranging larger pulley between arm joint and cause, spacing is excessive, increases the lateral rigidity of jib.Further, be convenient to the adjustment of the length of steel rope, avoid occurring steel rope broken lot phenomenon.
Other features and advantages of the utility model are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification sheets, is used from explanation the utility model, but does not form restriction of the present utility model with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the longitudinal sectional view along its length of telescopic jib mechanism according to the preferred embodiment of the present invention;
Fig. 2 is the schematic diagram of extreme end three the arms joints according to the preferred embodiment of the present invention in telescopic jib mechanism, and the structure that wherein arm joint is inner is represented by dashed line;
Fig. 3 is the transverse sectional view radially of arm joint in telescopic jib mechanism according to the preferred embodiment of the present invention;
Fig. 4 is the schematic diagram according to extreme end three the arm joints in the telescopic jib mechanism of the another kind of preferred implementation of the present invention, and the structure that wherein arm joint is inner is represented by dashed line.
Description of reference numerals
1 telescopic oil cylinder 2 stretches out steel rope
3 retraction steel rope 4 first pulley parts
5 second pulley part 6 the 3rd pulley parts
7 the 4th pulley part 8 fixed parts
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
In the utility model, when not doing contrary explanation, the noun of locality of use suitably should be understood according to the utility model mode shown in the drawings and contextual content.
The utility model provides a kind of telescopic jib mechanism, this telescopic jib mechanism comprises arm, this arm comprises interconnective N number of arm joint, described N number of arm joint stretches out direction along it and is followed successively by the 1st arm joint and saves to N arm, each described arm joint comprises cylindrical shell and is connected to the head of this barrel tip, and this cylindrical shell comprises sidewall and is connected and the diapire relative with described head with this sidewall, and described sidewall and head all comprise flat part, wherein
Described telescopic jib mechanism also comprises N-2 telescopic oil cylinder 1, on the diapire that the two ends of this i-th telescopic oil cylinder are connected to described i-th arm joint and on the diapire of described i-th+1 arm joint, i=1, N-2, N be greater than 2 positive integer, described N-2 arm joint, N-1 arm joint and N arm joint are connected with and stretch out steel rope 2 and retraction steel rope 3, when described telescopic oil cylinder 1 control described N-1 arm joint flexible time, described in stretch out steel rope 2 and described retraction steel rope 3 and can control described N arm joint and save with N-1 arm and jointly stretch.
Usually, the arm joint of arm comprises cylindrical shell and head, and the head of this arm and the sidewall of cylindrical shell are flat side on the upside of edge perpendicular to the cross-sectional plane on the axial direction of arm is and downside is the shape of arc-shaped side, as shown in Figure 3.Because the gap between the flat part that adjacent two arms save is plane, therefore additionally provide the parts such as other pulley assemblies in the present invention's preferred implementation hereinafter, these parts can arrange in the gap easily.
In the technical solution of the utility model, the 2nd arm joint in N number of arm joint all controls it by telescopic oil cylinder 1 to N-1 arm joint and stretches, wherein two ends be connected to last arm joint diapire on and rear one arm joint inside face on, and telescopic oil cylinder 1 is through the diapire of a rear arm joint, thus the flexible of the 1st to N-1 joint of multi-arm joint arm can be controlled by more simple structure.
N arm joint then controls to save common flexible with N-1 arm by stretching out steel rope 2 and retraction steel rope 3.That is, when N-1 arm joint controls to stretch out by telescopic oil cylinder 1 time, drive N arm to save to save jointly stretch out with N-1 arm by stretching out steel rope 2; When N-1 arm saves by telescopic oil cylinder 1 control retraction time, drive N arm joint and N-1 arm to save by retraction steel rope 3 and jointly retract.
Visible, in the technical solution of the utility model, the set-up mode of telescopic oil cylinder 1 is different from the set-up mode of the telescopic oil cylinder of prior art, thus realize saving failure-free extension and contraction control more to each arm by simpler structure, and stretch out steel rope 2 and retraction steel rope 3 only needs control N arm to save, what therefore arrange is relatively simple for structure.
Technique scheme achieves the flexible of the jib of multi-arm joint by simple structure, not only control more reliable, reduce mechanical complications, and between the arm joint cylindrical shell avoided arranging larger pulley between arm joint and cause, spacing is excessive, increases the lateral rigidity of jib.Further, be convenient to the adjustment of the length of steel rope, avoid occurring steel rope broken lot phenomenon.
In preferred implementation of the present utility model, preferably, the piston rod of described i-th telescopic oil cylinder is connected on the inner surface of the diapire of described i-th arm joint, the cylinder body of described i-th telescopic oil cylinder is connected on the inner surface of the diapire of described i-th+1 arm joint, the downside surface of the end of the cylinder body of the described telescopic oil cylinder above in two adjacent described telescopic oil cylinders is provided with slide block, the cylinder body of the described telescopic oil cylinder of top is slided relative to the cylinder body of the described telescopic oil cylinder of below by this slide block, and the described telescopic oil cylinder of below is by the described telescopic oil cylinder above described slider support.
In the preferred embodiment, the piston rod of the i-th telescopic oil cylinder is connected on the inner surface of the diapire of the i-th arm joint, and the diapire of the i-th+1 arm joint is provided with through hole, the cylinder body of this i-th telescopic oil cylinder is through the through hole on the diapire of this i-th+1 arm joint to extend in the i-th+1 arm joint, and the inner surface of diapire that the cylinder body of this i-th arm joint also saves with the i-th+1 arm is connected.
Preferably, described N-1 arm joint head flat part inner surface on be provided with the first pulley part 4, the outer surface of the flat part of the sidewall of the close described diapire of described N arm joint is provided with the second pulley part 5, this first pulley part 4 is arranged in couples relative to the central axis of described arm, the head of described N-2 arm joint is provided with fixed part 8
The described fixed part 8 of described one end and the first side of stretching out steel rope 2 is connected, described in stretch out steel rope 2 the other end walk around successively described first pulley part 4 of the first side, described second pulley part 5 and the second side described first pulley part 4 and be connected with the described fixed part 8 of the second side.
It should be noted that, for convenience of description, in this specification sheets, represent direction with " the first side " and " the second side ".Due to the first pulley part 4 relative to described arm central axis N-1 arm save head flat part on arrange in couples, therefore should " first side " and " the second side " be used for representing the head that this N-1 arm saves flat part on about the both sides of the central axis symmetry of arm, the flat part saved due to each arm is arranged all abreast, therefore should relative to the both sides of the central axis symmetry of arm on " first side " and " the second side " flat part that can be used for representing that all arms save, and for representing the corresponding relation of fixed part 8 and two the first pulley parts 4.
The fixed part 8 that the flat part of the first side of the central axis of arm is arranged that is positioned on the head that the one end of namely stretching out steel rope 2 and N-2 arm save is connected, this other end stretching out steel rope 2 walks around the first pulley part 4 of the first side of the flat part of the head that the N-1 arm corresponding with the fixed part 8 of the first side saves successively, second pulley part 5 and with the first pulley part 4 of this first side the first pulley part 4 about the second side of the central axis symmetry of arm, and the fixed part 8 that the flat part of the second side of the central axis of arm is arranged that is positioned on the head saved with N-2 arm is connected.
In above-mentioned preferred implementation, when N-1 arm joint stretches out under the control of telescopic oil cylinder 1, distance between first pulley part 4 and fixed part 8 increases, because the length of stretching out steel rope 2 is certain, therefore steel rope 2 applies to stretch out towards jib direction pulling force to the second pulley part 5 is stretched out, distance between first pulley part 4 and the second pulley part 5 reduces, and namely N arm joint stretches out relative to N-1 arm joint.
Below only illustrate a kind of preferred implementation, those skilled in the art can adopt the mode that in prior art, any one is suitable for, or carry out alternative technique scheme to the distortion of above-mentioned embodiment and realize stretching out the above-mentioned functions of steel rope 2.
Such as, the afterbody of N arm joint also can not be provided with the second pulley part 5, this one end of stretching out steel rope 2 is connected with fixed part 8, the other end is walked around the first pulley part 4 and is fixed on the afterbody of N arm joint, also above-mentioned functions can be realized, but in this case, this stretches out steel rope 2 and should be set to the first pulley part 4 multiple one to one.
Fixed part 8 is arranged on the head of N-2 arm joint, and this fixed part 8 is preferably at least arranged on the flat part of head, this fixed part 8 and the first pulley part 4 and the second pulley part 5 are substantially at grade, thus make to stretch out steel rope 2 and can save the direction of stretching out along arm to the power that N arm joint applies, stretch out reposefully to drive N arm joint.Further, preferably, described second pulley part 5 is symmetrical about the central axis of described arm.
Preferably, described fixed part 8 radially extends to outside described N-2 arm joint, namely radially stretch out from the head of N-2 arm joint, thus the excessive clearance not only avoided between arm joint, and described in stretch out steel rope 2 and can regulate with the connection location of described fixed part 8, can also convenient operation personnel to the manual regulation of length of stretching out steel rope 2, thus prevent the broken lot stretching out steel rope 2.
Preferably, the outer surface of the diapire of described N-1 arm joint is provided with the 3rd pulley part 6, the head of described N-2 arm joint is provided with fixed part 8,
One end of described retraction steel rope 3 is connected with described fixed part 8, and the other end of described retraction steel rope 3 walks around described 3rd pulley part 6 and the outer surface of the diapire saved with described N arm is connected.
By above-mentioned embodiment, when N-1 arm joint is retracted under the control of telescopic oil cylinder 1, distance between 3rd pulley part 6 and fixed part 8 increases, and the length of retraction steel rope 3 is certain, thus the Distance Shortened between the diapire that the 3rd pulley part 6 and N arm are saved, the steel rope 3 that namely bounces back pulls N arm to save and retracts relative to N-1 arm joint.
Can evenly stably pull N arm to save in the retraction process saved at N arm to make retraction steel rope 3, preferably, described 3rd pulley part 6 is arranged in couples relative to the central axis of described arm, and described retraction steel rope 3 is multiple one to one with described 3rd pulley part 6.
Below a kind of set-up mode of only example sentence retraction steel rope 3, those skilled in the art can adopt mode that in prior art, any one is suitable for implement, or improve above-mentioned embodiment, and the utility model is not limited this.
Preferably, the outer surface of the diapire of described N-1 arm joint is provided with the 3rd pulley part 6, the outer surface of the flat part of the sidewall of the close described head of described N arm joint is provided with the 4th pulley part 7,3rd pulley part 6 is arranged in couples relative to the central axis of described arm, the head of described N-2 arm joint is provided with fixed part 8
The first end of described retraction steel rope 3 is connected with the described fixed part 8 of the first side, the other end of described retraction steel rope 3 walk around successively described 3rd pulley part 6 of the first side, the 4th pulley part 7 and the second side described 3rd pulley part 6 and be connected with the described fixed part 8 of the second side.
By the another kind of embodiment of above-mentioned retraction steel rope 3, the usage quantity of retraction steel rope 3 can be reduced.
It should be noted that, for convenience of description, in this specification sheets, represent direction with " the first side " and " the second side ".Because the 4th pulley part 7 is arranged on the flat part of the sidewall of N arm joint, 3rd pulley part 6 relative to described arm central axis N-1 arm save diapire on arrange in couples, therefore should " first side " and " the second side " be used for sidewall that expression N arm saves flat part on relative to the both sides of the central axis symmetry of arm, the flat part saved due to each arm is arranged all abreast, therefore should relative to the both sides of the central axis symmetry of arm on " first side " and " the second side " flat part that can be used for representing that all arms save, and for representing the corresponding relation of fixed part 8 and two the first pulley parts 4.
Namely the fixed part 8 that the flat part of the first side of the central axis of arm is arranged that is positioned on the head that the one end and the N-2 arm that bounce back steel rope 3 save is connected, this other end stretching out steel rope 2 walk around successively the 3rd pulley part 6 of the first side of the diapire that the N-1 arm corresponding with the fixed part 8 of the first side saves, the 4th pulley part 7 and with the 3rd pulley part 6 of this first side the 3rd pulley part 6 about the second side of the central axis symmetry of arm, and the fixed part 8 that the flat part of the second side of the central axis of arm is arranged that is positioned on the head saved with N-2 arm is connected.
Preferably, described fixed part 8 radially extends to outside the sidewall of described N-2 arm joint, and described retraction steel rope 3 can regulate with the connection location of described fixed part 8.
Described fixed part 8 extends to outside the sidewall of described N-2 arm joint, thus the excessive clearance avoided between arm joint, and described retraction steel rope 3 can regulate with the connection location of described fixed part 8, and fixed part 8 reaches outside arm joint, can convenient operation personnel to the manual regulation of length of retraction steel rope 3, thus the broken lot of the steel rope 3 that prevents from bouncing back.
Illustrate one preferably embodiment in accompanying drawing 1 of the present invention, carry out exemplary description for the arm of 5 arm joints.
Wherein, the piston rod of the 1st telescopic oil cylinder is connected on the inner surface of the diapire of the 1st arm joint, and the cylinder body of the 1st telescopic oil cylinder through the diapire of the 2nd arm joint and the inner surface of the diapire saved with the 2nd arm be connected.2nd telescopic oil cylinder and the 3rd telescopic oil cylinder in like manner are arranged.
3rd telescopic oil cylinder can drive the 4th arm joint to save flexible relative to the 3rd arm, drives energy-conservation enough the drive during the 4th arm joint motion at the 3rd telescopic oil cylinder of the 5th arm to save fore and aft motion with the 4th arm by being connected to the 3rd arm joint, the 4th arm joint steel rope 2 that stretches out on the 5th arm joint with retraction steel rope 3 simultaneously.
In the preferred embodiment, the inner surface of the flat part of the head of the 4th arm joint 14 is provided with the first pulley part 4, the head of the 3rd arm joint 13 is provided with fixed part 8, the fixed part 8 of the first side that the one end of stretching out steel rope 2 is saved with N-2 arm is connected, and the other end that stretches out steel rope 2 is walked around the first pulley part 4, second pulley part 5 of the first side successively with the first pulley part 4 of the second side and is connected with the fixed part 8 of the second side.
In addition preferably, as shown in Figure 2, the outer surface of the diapire of the 4th arm joint 14 is also provided with the 3rd pulley part 6, and one end of retraction steel rope 3 is connected with fixed part 8, and opposite side is walked around the 3rd pulley part 6 and is connected with the outer surface that the 5th arm saves the diapire of 15.
Or preferably, as shown in Figure 4, except being provided with the 3rd pulley part 6 on the outer surface of the diapire of the 4th arm joint 14, also the 4th pulley part 7 is set on the outer surface of the flat part of the sidewall of the close head of the 5th arm joint 15, retraction one end of steel rope 3 is connected with the fixed part 8 of the first side, the other end walk around successively the 3rd pulley part 6 of the first side, the 4th pulley part 7 and the second side the 3rd pulley part 6 and be connected with the fixed part 8 of the second side.
The utility model also provides a kind of hoisting crane, and wherein, this hoisting crane comprises according to telescopic jib mechanism described in the utility model.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. a telescopic jib mechanism, this telescopic jib mechanism comprises arm, this arm comprises interconnective N number of arm joint, described N number of arm joint stretches out direction along it and is followed successively by the 1st arm joint and saves to N arm, each described arm joint comprises cylindrical shell and is connected to the head of this barrel tip, and this cylindrical shell comprises sidewall and is connected and the diapire relative with described head with this sidewall, and described sidewall and head all comprise flat part, it is characterized in that
Described telescopic jib mechanism also comprises N-2 telescopic oil cylinder (1), on the diapire that the two ends of the i-th telescopic oil cylinder are connected to described i-th arm joint and on the diapire of described i-th+1 arm joint, i=1, N-2, N be greater than 2 positive integer, described N-2 arm joint, N-1 arm joint and N arm save to be connected with and stretch out steel rope (2) and retraction steel rope (3), when described telescopic oil cylinder (1) control described N-1 arm joint flexible time, described steel rope (2) and the described retraction steel rope (3) of stretching out can control described N arm joint and save with N-1 arm and jointly stretch.
2. telescopic jib mechanism according to claim 1, is characterized in that,
The piston rod of described i-th telescopic oil cylinder is connected on the inner surface of the diapire of described i-th arm joint, the cylinder body of described i-th telescopic oil cylinder is connected on the inner surface of the diapire of described i-th+1 arm joint, the downside surface of the end of the cylinder body of the described telescopic oil cylinder above in two adjacent described telescopic oil cylinders is provided with slide block, the cylinder body of the described telescopic oil cylinder of top is slided relative to the cylinder body of the described telescopic oil cylinder of below by this slide block, and the described telescopic oil cylinder of below is by the described telescopic oil cylinder above described slider support.
3. telescopic jib mechanism according to claim 1, is characterized in that,
Described N-1 arm joint head flat part inner surface on be provided with the first pulley part (4), the outer surface of the flat part of the sidewall of the close described diapire of described N arm joint is provided with the second pulley part (5), this first pulley part (4) is arranged in couples relative to the central axis of described arm, the head of described N-2 arm joint is provided with fixed part (8)
The described fixed part (8) of described one end and the first side of stretching out steel rope (2) is connected, described in stretch out steel rope (2) the other end walk around successively described first pulley part (4) of the first side, described second pulley part (5) and the second side described first pulley part (4) and be connected with the described fixed part (8) of the second side.
4. telescopic jib mechanism according to claim 3, is characterized in that,
Described second pulley part (5) is symmetrical about the central axis of described arm.
5. the telescopic jib mechanism according to claim 3 or 4, is characterized in that,
Described fixed part (8) radially extends to outside described N-2 arm joint, and described in stretch out steel rope (2) and described fixed part (8) connection location can regulate.
6. telescopic jib mechanism according to claim 1, is characterized in that,
The outer surface of the diapire of described N-1 arm joint is provided with the 3rd pulley part (6), the head of described N-2 arm joint is provided with fixed part (8),
One end of described retraction steel rope (3) is connected with described fixed part (8), and the other end of described retraction steel rope (3) walks around described 3rd pulley part (6) and the outer surface of the diapire saved with described N arm is connected.
7. telescopic jib mechanism according to claim 6, is characterized in that,
Described 3rd pulley part (6) is arranged in couples relative to the central axis of described arm, and described retraction steel rope (3) is multiple one to one with described 3rd pulley part (6).
8. telescopic jib mechanism according to claim 1, is characterized in that,
The outer surface of the diapire of described N-1 arm joint is provided with the 3rd pulley part (6), the outer surface of the flat part of the sidewall of the close described head of described N arm joint is provided with the 4th pulley part (7), 3rd pulley part (6) is arranged in couples relative to the central axis of described arm, the head of described N-2 arm joint is provided with fixed part (8)
One end of described retraction steel rope (3) is connected with the described fixed part (8) of the first side, the other end of described retraction steel rope (3) walk around successively described 3rd pulley part (6) of the first side, the 4th pulley part (7) and the second side described 3rd pulley part (6) and be connected with the described fixed part (8) of the second side.
9., according to the telescopic jib mechanism in claim 6-8 described in any one, it is characterized in that,
Described fixed part (8) radially extends to outside the sidewall of described N-2 arm joint, and described retraction steel rope (3) can regulate with the connection location of described fixed part (8).
10. a hoisting crane, is characterized in that, this hoisting crane comprises according to the telescopic jib mechanism in claim 1-9 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814612.XU CN204384765U (en) | 2014-12-19 | 2014-12-19 | Telescopic jib mechanism and hoisting crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420814612.XU CN204384765U (en) | 2014-12-19 | 2014-12-19 | Telescopic jib mechanism and hoisting crane |
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| Publication Number | Publication Date |
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| CN204384765U true CN204384765U (en) | 2015-06-10 |
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| CN201420814612.XU Expired - Fee Related CN204384765U (en) | 2014-12-19 | 2014-12-19 | Telescopic jib mechanism and hoisting crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368497A (en) * | 2018-12-21 | 2019-02-22 | 陈奕松 | A kind of connecton layout of telescopic arm of crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109368497A (en) * | 2018-12-21 | 2019-02-22 | 陈奕松 | A kind of connecton layout of telescopic arm of crane |
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Granted publication date: 20150610 Termination date: 20161219 |