CN103466475A - Telescope arm device and crane - Google Patents
Telescope arm device and crane Download PDFInfo
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- CN103466475A CN103466475A CN2013104151152A CN201310415115A CN103466475A CN 103466475 A CN103466475 A CN 103466475A CN 2013104151152 A CN2013104151152 A CN 2013104151152A CN 201310415115 A CN201310415115 A CN 201310415115A CN 103466475 A CN103466475 A CN 103466475A
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Abstract
The invention provides a telescope arm device and a crane. The telescope arm device provided by the invention comprises a first section arm, a second section arm, a third section arm, a fourth section arm, a fifth section arm, a telescoping cylinder, a first arm extending wheel, a first arm extending dragline, a second arm extending wheel, a third arm extending wheel, a fourth arm extending wheel, a second arm extending dragline, a first arm contracting wheel, a second arm contracting wheel, a third telescope arm wheel, a first arm contracting dragline, a second arm contracting dragline and a third telescope arm dragline, wherein the second section arm, the third section arm, the fourth section arm and the fifth section arm are sequentially sleeved in the first section arm. The telescope arm device provided by the invention has the advantages that the self weight is light, the height of gravitational center is obviously reduced during a full arm extension hosting process, and the hoisting property of a hoisting arm is greatly improved.
Description
Technical field
The present invention relates to the telescoping mechanism field, more specifically, relate to a kind of telescopic boom device and hoisting crane.
Background technology
Crane arm is the core component of hoisting crane, it is also hoisting crane most important load-bearing structural member in hanging year operation, the weight of crane arm, intensity, rigidity will directly affect the in-use performance of hoisting crane, the technology content of crane arm is the important symbol of crane products level, and design, manufacture, the assembly quality that improves crane arm is the target that each hoisting crane producer is constantly pursued.
The telescopic boom device of crane arm mainly contains oil cylinder rope row's formula and two kinds of forms of single cylinder bolt-type, consider cost and relevant manufacturing technology, current 100 tons and most five joint telescopic booms and the following telescopic boom of five joints of adopting of following product, and the inner oil cylinder rope row formula telescoping mechanism that adopts of telescopic boom arm body, five joint Telescopic boom mechanisms wherein are again the highest a kind of mechanisms of proportion on medium and small tonnage produce market, and the flexible groundwork of its five joint arm is to realize the flexible of five joint arms by two inverted telescopic oil cylinders and two groups of telescopic boom ropes.
Please refer to Fig. 1, Fig. 1 shows in prior art five joint telescopic boom devices for a kind of typical hoisting crane.
This five joints telescopic boom device comprises first segment arm (also referred to as basic arm) 1 ' and is set in successively second section arm 2 ', the 3rd joint arm 3 ', the 4th joint arm 4 ' and the 5th joint arm 5 ' wherein.Be provided with the first telescoping cylinder 61 ' and the second telescoping cylinder 62 ' in arm cylinder inside.The cylinder barrel of the first telescoping cylinder 61 ' is connected with second section arm 2 ', and piston rod is connected with first segment arm 1 '.The cylinder barrel of the second telescoping cylinder 62 ' is connected with the 3rd joint arm 3 ', and piston rod is connected with second section arm 2 '.The middle part winding that first semi-girder wheel the 71 ', the first semi-girder drag-line 81 ' is installed in the cylinder barrel end of the second telescoping cylinder 62 ' is upper at the first semi-girder wheel 71 ', and two ends are connected with the arm tail of the 4th joint arm 4 ' with the arm tail of second section arm 2 ' respectively.The middle part winding that second semi-girder wheel the 72 ', the second semi-girder drag-line 82 ' is installed at the 4th arm head that saves arm is upper at the second semi-girder wheel 72 ', and two ends are connected with the 5th arm tail that saves arm 5 ' with the arm tail of the 3rd joint arm 3 ' respectively.The middle part winding that first contracting arm wheel the 73 ', the first contracting arm drag-line 83 ' is installed at the 3rd arm tail that saves arm 3 ' is upper at the first contracting arm wheel 73 ', and two ends are connected with the arm tail of the 4th joint arm 4 ' with the arm head of second section arm 2 ' respectively.The middle part winding that second contracting arm wheel the 74 ', the second contracting arm drag-line 84 ' is installed at the 4th arm tail that saves arm is upper at the second contracting arm wheel 74 ', and two ends are connected with the 5th arm tail that saves arm 5 ' with the arm head of the 3rd joint arm 3 ' respectively.
This five joints telescopic boom device synchronously to stretch out principle of work as described below: the rodless cavity oil-feed of the first telescoping cylinder 61 ' and the second telescoping cylinder 62 ', the cylinder barrel of each telescoping cylinder protracts and drives respectively second section arm 2 ' and the 3rd and saves arm 3 ' and stretch out.Simultaneously, under the effect of the first semi-girder wheel 71 ', the first semi-girder drag-line 81 ' drives relative the 3rd joint arm 3 ' of the 4th joint arm 4 ' and stretches out.Simultaneously, under the effect of the second semi-girder wheel 72 ', the second semi-girder drag-line 82 ' drives relative the 4th joint arm 4 ' of the 5th joint arm 5 ' and stretches out, thereby has realized second section arm 2 ' synchronously stretching out to the 5th joint arm 5 '.
The synchronous retraction principle of work of this five joints telescopic boom device is as described below: the rod chamber oil-feed of the first telescoping cylinder 61 ' and the second telescoping cylinder 62 ', the cylinder barrel retraction of each telescoping cylinder also drives respectively second section arm 2 ' and the 3rd joint arm 3 ' retraction.Simultaneously, under the effect of the first contracting arm wheel 73 ', the first contracting arm drag-line 83 ' drives relative the 3rd joint arm 3 ' retraction of the 4th joint arm 4 '.Simultaneously, under the effect of the second contracting arm wheel 74 ', the second contracting arm drag-line 84 ' drives relative the 4th joint arm 4 ' retraction of the 5th joint arm 5 ', thereby has realized the synchronous retraction of second section arm 2 ' to the 5th joint arm 5 '.
In above-mentioned five joint telescopic boom devices, realize the full Telescopic of crane arm by the mode that two telescoping cylinders are set because of arm cylinder inside, therefore cause huge, the full semi-girder of crane arm weight to hang while carrying the problems such as the crane arm center of gravity is higher, affect the lifting performance of crane arm.
Therefore, how when realizing five joint telescopic boom device Telescopics, reduce crane arm weight and full semi-girder hangs the height of gravitational center while carrying, with the lifting performance that improves crane arm, become the technical matters that those skilled in the art need solution badly.
Summary of the invention
Based on above-mentioned technical barrier, one object of the present invention is to provide a kind of telescopic boom device, and its weight is lighter and height of gravitational center that full semi-girder hangs while carrying is lower, has improved the lifting performance of crane arm.Another object of the present invention is to provide a kind of hoisting crane with above-mentioned telescopic boom device.
Telescopic boom device provided by the invention comprises: first segment arm and the second section arm, the 3rd joint arm, the 4th joint arm, the 5th that are set in successively in the first segment arm save arm; Telescoping cylinder, its piston rod is connected with the first segment arm, and cylinder barrel is connected with the second section arm; The first semi-girder is taken turns, and is installed on the cylinder barrel end of telescoping cylinder; The first semi-girder drag-line, its first end is connected with the arm tail of first segment arm, and the middle part winding is on the first semi-girder wheel, and the second end is connected with the arm tail of the 3rd joint arm; The second semi-girder is taken turns, and is installed on the arm head of the 3rd joint arm; The 3rd semi-girder is taken turns, and is installed on the arm tail of the 4th joint arm; The 4th semi-girder is taken turns, and is installed on the arm head of the 4th joint arm; The second semi-girder drag-line, its first end is connected with the arm tail of first segment arm, and the second semi-girder wheel, the 3rd semi-girder wheel and the 4th semi-girder wheel are crossed in middle part winding successively, and the second end is connected with the 5th joint arm; The first contracting arm is taken turns, and is installed on the arm tail of second section arm; The second contracting arm is taken turns, and is installed on the arm tail of the 3rd joint arm; The 3rd telescopic boom is taken turns, and is installed on the arm tail of the 4th joint arm; The first contracting arm drag-line, its middle part winding is on the first contracting arm wheel, and two ends are connected with the 3rd joint arm with the first segment arm respectively; The second contracting arm drag-line, its middle part winding is on the second contracting arm wheel, and two ends are connected with the 4th joint arm with the second section arm respectively; The 3rd telescopic boom drag-line, its middle part winding is on the 3rd telescopic boom wheel, and two ends are connected with the 5th joint arm with the 3rd joint arm respectively.
Further, the second end of the second semi-girder drag-line is connected with the arm tail of the 5th joint arm.
Further, the two ends of the first contracting arm drag-line are connected with the arm tail of the 3rd joint arm with the arm head of first segment arm respectively; The two ends of the second contracting arm drag-line are connected with the arm tail of the 4th joint arm with the arm head of second section arm respectively; The two ends of the 3rd telescopic boom drag-line are connected with the arm tail of the 5th joint arm with the arm head of the 3rd joint arm respectively.
Further, the first end of the first contracting arm drag-line is connected with the link span of first segment arm arm head, and the second end is connected with the self-equalizing frame of the 3rd joint arm arm tail; The first end of the second contracting arm drag-line is connected with the link span of second section arm arm head, and the second end is connected with the self-equalizing frame of the 4th joint arm arm tail; The first end of the 3rd telescopic boom drag-line is connected with the link span of the 3rd joint arm arm head, and the second end is connected with the arm tail of the 5th joint arm.
Further, the first end of the first semi-girder drag-line is connected with the drag-line permanent seat of first segment arm arm tail, and the second end is connected with the self-equalizing frame of the 3rd joint arm arm tail.
Further, for the oil pipe outer ring sleeve to the telescoping cylinder fuel feeding, the holder chain is housed.
Further, the arm tail of the piston rod of telescoping cylinder and first segment arm is hinged, and cylinder barrel is connected with the arm tail of second section arm.
Further, each arm wheel is pulley, and each drag-line is steel rope.
Further, each arm wheel is sprocket wheel, and each drag-line is chain.
Hoisting crane provided by the invention, be provided with above-mentioned telescopic boom device.
The technical scheme of telescopic boom device provided by the invention, by being set in the arm cylinder, a telescoping cylinder and rope row combination realize the synchronization telescope of five joint crane arms, with respect to utilizing two telescoping cylinders and rope row combination to realize the scheme of five joint crane arm synchronization telescopes in prior art, not only alleviated the deadweight of crane arm, and the height of gravitational center that the full semi-girder of this crane arm hangs while carrying obviously reduces, thereby significantly improved the lifting performance of crane arm.In addition, telescopic boom device provided by the invention can also reach by the use amount that reduces telescoping cylinder the effect that reduces the crane arm cost.
The accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
Fig. 1 has schematically shown the structure principle chart of five joint arm retractor devices of prior art;
Fig. 2 has schematically shown the structure principle chart of the telescopic boom device that the embodiment of the present invention provides.
The specific embodiment
It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Referring to Fig. 2, show the structure principle chart of the telescopic boom device that the embodiment of the present invention provides.As can be seen from Figure, this telescopic boom device comprises: first segment arm 1 and the second section arm 2, the 3rd joint arm 3, the 4th joint arm 4 and the 5th that are set in successively in first segment arm 1 save arm 5.
Telescoping cylinder 6 is installed in the arm body, and the piston rod of telescoping cylinder 6 is connected with first segment arm 1, and the cylinder barrel of telescoping cylinder 6 is connected with second section arm 2; Preferably, the arm tail of the piston rod of telescoping cylinder 6 and first segment arm 1 is hinged, and cylinder barrel is connected with the arm tail of second section arm 2.The first semi-girder wheel 71 is installed in the cylinder barrel end of telescoping cylinder 6.The first end of the first semi-girder drag-line 81 is connected with the arm tail of first segment arm 1, and the middle part winding of the first semi-girder drag-line 81 is on the first semi-girder wheel 71, and the second end of the first semi-girder drag-line 81 is connected with the arm tail of the 3rd joint arm 3.
Arm head at the 3rd joint arm 3 is equipped with the second semi-girder wheel 72.Arm tail at the 4th joint arm 4 is equipped with the 3rd semi-girder wheel 73.Arm head at the 4th joint arm 4 is equipped with the 4th semi-girder wheel 74.The first end of the second semi-girder drag-line 82 is connected with the arm tail of first segment arm 1, and the middle part of the second semi-girder drag-line 82 the second end and the 5th that the second semi-girder wheel the 72, the 3rd semi-girder wheel the 73 and the 4th semi-girder wheel 74, the second semi-girder drag-lines 82 are crossed in winding successively saves arm 5 and is connected.Preferably, the second end of the second semi-girder drag-line 82 is connected with the arm tail of the 5th joint arm 5, so that the second end of the second semi-girder drag-line 82 is installed to location.
Arm tail at second section arm 2 is equipped with the first contracting arm wheel 75.The middle part winding of the first contracting arm drag-line 83 is on the first contracting arm wheel 75, and the two ends of the first contracting arm drag-line 83 are connected with the 3rd joint arm 3 with first segment arm 1 respectively.Preferably, the two ends of the first contracting arm drag-line 83 are connected with the arm tail of the 3rd joint arm 3 with the arm head of first segment arm 1 respectively, so that location is installed in the two ends of the first contracting arm drag-line 83.
Arm tail at the 3rd joint arm 3 is equipped with the second contracting arm wheel 76.The middle part winding of the second contracting arm drag-line 84 is on the second contracting arm wheel 76, and the two ends of the second contracting arm drag-line 84 are connected with the 4th joint arm 4 with second section arm 2 respectively.Preferably, the two ends of the second contracting arm drag-line 84 are connected with the arm tail of the 4th joint arm 4 with the arm head of second section arm 2 respectively, so that location is installed in the two ends of the second contracting arm drag-line 84.
Arm tail at the 4th joint arm 4 is equipped with the 3rd telescopic boom wheel 77.The middle part winding of the 3rd telescopic boom drag-line 85 is on the 3rd telescopic boom wheel 77, and the two ends of the 3rd telescopic boom drag-line 85 are connected with the 5th joint arm 5 with the 3rd joint arm 3 respectively.Preferably, the two ends of the 3rd telescopic boom drag-line 85 are connected with the arm tail of the 5th joint arm 5 with the arm head of the 3rd joint arm 3 respectively, so that location is installed in the two ends of the 3rd telescopic boom drag-line 85.
It should be noted that, each arm wheel above related to can, according to the occupation mode of field of engineering technology routine, be fixed on the pulley yoke of corresponding joint arm or telescoping cylinder as required.Correspondingly, the two ends of each drag-line can connect with the link span of corresponding joint arm arm head or self-equalizing frame or other structures of arm tail respectively.Preferably, the first end of the first contracting arm drag-line 83 is connected with the link span of first segment arm 1 arm head, and the second end is connected with the self-equalizing frame of the 3rd joint arm 3 arm tails; The first end of the second contracting arm drag-line 84 is connected with the link span of second section arm 2 arm heads, and the second end is connected with the self-equalizing frame of the 4th joint arm 4 arm tails; The first end of the 3rd telescopic boom drag-line 85 is connected with the link span of the 3rd joint arm 3 arm heads, and the second end is connected with the jointed shaft of the 5th joint arm 5 arm tails.Preferably, the first end of the first semi-girder drag-line 81 is connected with the drag-line permanent seat of first segment arm 1 arm tail, and the second end is connected with the self-equalizing frame of the 3rd joint arm 3 arm tails; The first end of the second semi-girder drag-line 82 is connected with another drag-line permanent seat of first segment arm 1 arm tail, and the second end is connected with another jointed shaft of the 5th joint arm 5 arm tails.
Come again referring to Fig. 2, the telescopic boom device that the embodiment of the present invention provides to stretch out principle of work as described below:
When the rodless cavity oil-feed of telescoping cylinder 6, the cylinder barrel of telescoping cylinder 6 protracts, and drives second section arm 2 simultaneously and stretches out.Simultaneously, under the effect of the first semi-girder wheel 71, the first semi-girder drag-line 81 drive the 3rd joint arms 3 stretch out the speed of speed and stretch out to be twice in telescoping cylinder 6.Simultaneously, under the effect of the second semi-girder wheel the 72, the 3rd semi-girder wheel the 73 and the 4th semi-girder wheel 74, the second semi-girder drag-line 82 drives the 5th joint arm and stretches out with the speed of 6 four times of telescoping cylinders.Simultaneously, the semi-girder drag-line that the 3rd telescopic boom drag-line 85 serves as the 4th joint arm 4 is used, under the effect of the 3rd telescopic boom wheel 77, the 3rd telescopic boom drag-line 85 drives the 4th joint arms and stretches out 0.5 times of speed with the 5th joint arm and stretch out, thereby has realized second section arm 2 synchronously stretching out to the 5th joint arm 5.
The retraction principle of work of the telescopic boom device that the embodiment of the present invention provides is as described below:
When the rod chamber oil-feed of telescoping cylinder 6, the cylinder barrel of telescoping cylinder 6 retraction drives second section arm 2 retractions simultaneously.Simultaneously, under the effect of the first contracting arm wheel 75, the first contracting arm drag-line 83 drives the 3rd joint arm 2 with respect to second section arm 2 retractions.Under the effect of the second contracting arm wheel 76, the second contracting arm drag-line 84 drives the 4th joint arm 4 with respect to the 3rd joint arm 3 retractions.Simultaneously, the contracting arm drag-line that the 3rd telescopic boom drag-line 85 serves as the 5th joint arm 5 is used, under the effect of the 3rd telescopic boom wheel 77, the 3rd telescopic boom drag-line 85 drives the 5th joint arm 5 with respect to the 4th joint arm 4 retractions, thereby has realized the synchronous retraction of second section arm 2 to the 5th joint arm 5.
The technical scheme of the telescopic boom device that the embodiment of the present invention provides, by being set in the arm cylinder, a telescoping cylinder and rope row combination realize the synchronization telescope of five joint crane arms, with respect to utilizing two telescoping cylinders and rope row combination to realize the scheme of five joint crane arm synchronization telescopes in prior art, because reduced the usage quantity of telescoping cylinder, so not only alleviated the deadweight of crane arm, and the height of gravitational center that the full semi-girder of this crane arm hangs while carrying obviously reduces, thereby significantly improved the lifting performance of crane arm.In addition, telescopic boom device provided by the invention can also reach by the use amount that reduces telescoping cylinder the effect that reduces the crane arm cost.
Preferably, for the oil pipe outer ring sleeve to telescoping cylinder 6 fuel feeding, the holder chain is housed, this holder chain can be also elastomeric material for the metallic material with some strength, for the protection of oil pipe, extends the service life of oil pipe.
Preferably, each above-mentioned arm wheel (comprising first semi-girder wheel 71, second semi-girder wheel the 72, the 3rd semi-girder wheel the 73, the 4th semi-girder wheel 74, first contracting arm wheel the 75, second contracting arm wheel the 76 and the 3rd telescopic boom wheel 77) can be all pulley; Correspondingly, each above-mentioned drag-line (comprising the first semi-girder drag-line 81, the second semi-girder drag-line 82, the first contracting arm drag-lines 83, the second contracting arm drag-line 84 and the 3rd telescopic boom drag-line 85) can be all steel rope.Pulley and steel rope have widespread use in engineering machinery field, and it is convenient to buy, and are convenient to upgrade and safeguard.
Certainly, above-mentioned each arm wheel is not limited to pulley, also can adopt other can realize the parts that rotate, such as sprocket wheel etc.Correspondingly, each above-mentioned drag-line also is not limited to steel rope, can be for example chain.
In sum, the telescopic boom device that the embodiment of the present invention provides has following advantage:
1) because saving a telescoping cylinder, be crane arm loss of weight weight more than 1 ton at least, thereby alleviated weight and the complete vehicle weight of crane arm, and due to the reduction of crane arm deadweight improved in long-armed hoisting crane hang the whole vehicle stability while carrying.In addition, because the minimizing of telescoping cylinder usage quantity, the manufacturing cost of this telescopic boom device is minimized.In addition, the assembly difficulty of this retractor device is also lower.
When 2) this telescopic boom device drives five joint arm synchronization telescopes by a telescoping cylinder and rope row combination, stretching speed is fast.
The hoisting crane that the embodiment of the present invention provides is provided with above-mentioned telescopic boom device.The telescopic boom device provided because of the embodiment of the present invention has above-mentioned technique effect, and the hoisting crane that therefore possesses this telescopic boom device also should possess corresponding technique effect, does not repeat them here.
These are only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a telescopic boom device, is characterized in that, comprising:
First segment arm (1) and the second section arm (2), the 3rd joint arm (3), the 4th joint arm (4), the 5th that are set in successively in described first segment arm (1) save arm (5);
Telescoping cylinder (6), its piston rod is connected with described first segment arm (1), and cylinder barrel is connected with described second section arm (2); The first semi-girder is taken turns (71), is installed on the cylinder barrel end of described telescoping cylinder (6); The first semi-girder drag-line (81), its first end is connected with the arm tail of described first segment arm (1), and the middle part winding is upper at described the first semi-girder wheel (71), and the second end is connected with the arm tail of described the 3rd joint arm (3);
The second semi-girder is taken turns (72), is installed on the arm head of described the 3rd joint arm (3); The 3rd semi-girder is taken turns (73), is installed on the arm tail of described the 4th joint arm (4); The 4th semi-girder is taken turns (74), is installed on the arm head of described the 4th joint arm (4); The second semi-girder drag-line (82), its first end is connected with the arm tail of described first segment arm (1), and described the second semi-girder wheel, described the 3rd semi-girder wheel and described the 4th semi-girder wheel are crossed in middle part winding successively, and the second end is connected with described the 5th joint arm (5);
The first contracting arm is taken turns (75), is installed on the arm tail of described second section arm (2); The second contracting arm is taken turns (76), is installed on the arm tail of described the 3rd joint arm (3); The 3rd telescopic boom is taken turns (77), is installed on the arm tail of described the 4th joint arm (4);
The first contracting arm drag-line (83), its middle part winding is upper at described the first contracting arm wheel (75), and two ends are connected with described the 3rd joint arm (3) with described first segment arm (1) respectively; The second contracting arm drag-line (84), its middle part winding is upper at described the second contracting arm wheel (76), and two ends are connected with described the 4th joint arm (4) with described second section arm (2) respectively; The 3rd telescopic boom drag-line (85), its middle part winding is upper at described the 3rd telescopic boom wheel (77), and two ends are connected with described the 5th joint arm (5) with described the 3rd joint arm (3) respectively.
2. telescopic boom device according to claim 1, is characterized in that, the second end of described the second semi-girder drag-line (82) is connected with the arm tail of described the 5th joint arm (5).
3. telescopic boom device according to claim 2, is characterized in that, the two ends of the first contracting arm drag-line (83) are connected with the arm tail of described the 3rd joint arm (3) with the arm head of described first segment arm (1) respectively; The two ends of the second contracting arm drag-line (84) are connected with the arm tail of described the 4th joint arm (4) with the arm head of described second section arm (2) respectively; The two ends of the 3rd telescopic boom drag-line (85) are connected with the arm tail of described the 5th joint arm (5) with the arm head of described the 3rd joint arm (3) respectively.
4. telescopic boom device according to claim 3, is characterized in that, the first end of described the first contracting arm drag-line (83) is connected with the link span of first segment arm (1) arm head, and the second end is connected with the self-equalizing frame of described the 3rd joint arm (3) arm tail; The first end of described the second contracting arm drag-line (84) is connected with the link span of described second section arm (2) arm head, and the second end is connected with the self-equalizing frame of described the 4th joint arm (4) arm tail; The first end of described the 3rd telescopic boom drag-line (85) is connected with the link span of described the 3rd joint arm (3) arm head, and the second end is connected with the arm tail of described the 5th joint arm (5).
5. telescopic boom device according to claim 4, it is characterized in that, the first end of described the first semi-girder drag-line (81) is connected with the drag-line permanent seat of described first segment arm (1) arm tail, and the second end is connected with the self-equalizing frame of described the 3rd joint arm (3) arm tail.
6. telescopic boom device according to claim 1, is characterized in that, for the oil pipe outer ring sleeve to described telescoping cylinder (6) fuel feeding, the holder chain is housed.
7. telescopic boom device according to claim 1, is characterized in that, the arm tail of the piston rod of described telescoping cylinder (6) and described first segment arm (1) is hinged, and cylinder barrel is connected with the arm tail of described second section arm (2).
8. according to the described telescopic boom device of any one in claim 1 to 7, it is characterized in that, each arm wheel is pulley, and each drag-line is steel rope.
9. according to the described telescopic boom device of any one in claim 1 to 7, it is characterized in that, each arm wheel is sprocket wheel, and each drag-line is chain.
10. a hoisting crane, is characterized in that, is provided with the described telescopic boom device of any one in claim 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310415115.2A CN103466475B (en) | 2013-09-12 | 2013-09-12 | Telescope arm device and crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310415115.2A CN103466475B (en) | 2013-09-12 | 2013-09-12 | Telescope arm device and crane |
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| CN103466475A true CN103466475A (en) | 2013-12-25 |
| CN103466475B CN103466475B (en) | 2015-07-08 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071711A (en) * | 2014-07-09 | 2014-10-01 | 徐州重型机械有限公司 | Crane and telescopic arm structure thereof |
| CN108639976A (en) * | 2018-07-20 | 2018-10-12 | 中铁十局集团第二工程有限公司 | A kind of crane and tackling system |
| CN113086869A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| CN113086870A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| WO2024021459A1 (en) * | 2022-07-29 | 2024-02-01 | 徐州重型机械有限公司 | Multi-pulley telescopic mechanism and crane |
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| KR20070098339A (en) * | 2006-03-31 | 2007-10-05 | 강남국 | Telescopic boom crane |
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| CN201433061Y (en) * | 2009-07-20 | 2010-03-31 | 三一汽车制造有限公司 | Automobile crane and telescopic arm device thereof |
| CN201544240U (en) * | 2009-10-19 | 2010-08-11 | 三一集团有限公司 | Mechanical arm extension mechanism |
| CN202245841U (en) * | 2011-08-31 | 2012-05-30 | 重庆大江工业有限责任公司 | Synchronous telescoping mechanism for five-stage telescopic boom automobile crane |
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| CN108639976A (en) * | 2018-07-20 | 2018-10-12 | 中铁十局集团第二工程有限公司 | A kind of crane and tackling system |
| CN113086869A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| CN113086870A (en) * | 2021-03-26 | 2021-07-09 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| CN113086870B (en) * | 2021-03-26 | 2022-06-21 | 三一汽车起重机械有限公司 | Telescopic mechanism and crane |
| WO2024021459A1 (en) * | 2022-07-29 | 2024-02-01 | 徐州重型机械有限公司 | Multi-pulley telescopic mechanism and crane |
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