CN102285598B - Multi-section arm telescopic device and crane with same - Google Patents
Multi-section arm telescopic device and crane with same Download PDFInfo
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- CN102285598B CN102285598B CN 201110170058 CN201110170058A CN102285598B CN 102285598 B CN102285598 B CN 102285598B CN 201110170058 CN201110170058 CN 201110170058 CN 201110170058 A CN201110170058 A CN 201110170058A CN 102285598 B CN102285598 B CN 102285598B
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Abstract
The invention provides a multi-section arm telescopic device and a crane with the same. The multi-section arm telescopic device comprises a single cylinder bolt part and a rope row part; the single cylinder bolt part comprises m section arms, a telescopic oil cylinder driving a pth section arm to stretch, and an arm pulling mechanism and a cylinder bolt mechanism which are used for positioning the p-th section arm, wherein m and p are natural numbers and p is more than 1 and less than or equal to m; the rope row part comprises a (m+1)th section arm to an nth section arm; an arm stretching rope row for the qth section arm comprises an arm stretching rotating wheel for the qth section arm and an arm stretching guy cable for the qth section arm, a first end of the arm stretching guy cable is fixed at the bottom of a (q-2)th section arm and a second end of the arm stretching guy cable is fixed at the bottom of the qth section arm; an arm contracting rope row for the qth section arm comprises an arm contracting rotating wheel for the qth section arm; and the first end of an arm stretching guy cable for the qth section arm is fixed on the top of the (q-2)th section arm, the second end of the arm stretching guy cable is fixed at the bottom of the qth section arm and passes by an arm contracting rotating wheel for a (q-1)th section arm. The multi-section arm telescopic device has high telescopic speed and high work efficiency.
Description
Technical field
The present invention relates to technical field of engineering machinery, be specifically related to a kind of Multi-section arm telescopic device, the invention still further relates to the hoisting crane with this Multi-section arm telescopic device.
Background technology
The single-cylinder bolt technology is generally than hoister in large tonnage and adopts, and this kind device is driven by a telescopic oil cylinder, and the cylinder barrel of telescopic oil cylinder has cylinder pin and plug-in and pull-off device, saves between the telescopic boom by cylinder pin and any optionally to be connected to realize stretching.Owing to respectively save telescopic boom in this kind device and be and stretch out section by section and retracts, and every joint arm stretches out and retracts and all need pass through cylinder, arm pin Plug Action realization, and therefore, its stretching speed is slower, thereby affects the work efficiency of hoisting crane.
The rope drainage technique is generally little tonnage hoisting crane and adopts, and major advantage is that stretching speed is fast, high efficiency, technology maturation and easily realization.Yet, because arranging, steel rope intensity and rope the aspect such as put, single cylinder generally can only be realized the flexible of four joint arms.
Chinese invention patent application notification number CN101585491A (June 17 2009 applying date, application number 200910149146.1) discloses a kind of car hosit and device with multiple sections of telescopic jibs thereof, comprises rope row's connecting bridge and latch connecting bridge.Rope row connecting bridge comprises at least two joint telescopic booms that are positioned at inside and are connected with drag-line by runner, and the latch connecting bridge comprises at least one joint telescopic boom and the basic arm that is positioned at the outside and is connected with the cylinder pin by the arm pin.The acromere telescopic boom of the cylinder barrel of telescopic oil cylinder and rope row part is connected.Wherein, in rope row connecting bridge, at cylinder barrel the first semi-girder runner is installed, the first semi-girder guy cable rounds the first semi-girder runner, first end connects the second section arm, and the second end connects the 4th joint arm; On the 4th joint arm the second semi-girder runner is installed, the second semi-girder guy cable rounds the second semi-girder runner, its first end connect the 3rd joint arm, and the second end connects the 5th joint arm; The 3rd joint arm is equipped with the first semi-girder runner, the first semi-girder guy cable rounds the first semi-girder runner, and its first end connects the second section arm, and the second end connects the 4th joint arm; The 4th joint arm is equipped with the second contracting arm runner, and the second contracting arm runner is walked around the second contracting arm runner, and its first end connects the 3rd joint arm, and the second end connects the 5th joint arm.Like this, in the telescopic boom telescopic process, because the telescopic boom that respectively saves of rope row connecting bridge is synchronization telescope, improved the stretching speed of telescopic boom device.
The technology of above-mentioned Chinese invention patent application CN101585491A realized the retractor device of five joint arms, but there is following technical matters in this scheme by specific single-cylinder bolt structure and specific rope row structure:
The acromere arm of its cylinder barrel and rope row part is captiveed joint, and the terminal top of cylinder barrel also will arrange the first semi-girder runner, and its structure is comparatively complicated, is difficult to realize under the single cylinder condition the flexible of the above jib of 5 joint arms.
Before stretching out fast from complete retracted mode to rope row mechanism and from stretching out state fully before the fast retractile of realizing rope row mechanism, need to carry out first expanding-contracting action between basic arm and the second section arm (need to carry out latch to the external arm pin between basic arm and the second section arm or pull pin) by telescopic oil cylinder, cause affecting the single oil cylinder stretching speed, inefficiency.
Summary of the invention
Technical matters to be solved by this invention provides a kind of Multi-section arm telescopic device and has the hoisting crane of this Multi-section arm telescopic device, and expansion saves arm quantity to realize that more single oil cylinder is flexible under the single cylinder condition to be conveniently implemented in.
In order to solve the problems of the technologies described above, according to an aspect of the present invention, a kind of Multi-section arm telescopic device is provided, comprise single-cylinder bolt part and rope row part, it is characterized in that: single-cylinder bolt partly comprises m joint arm, drive the flexible telescopic oil cylinder of the arbitrary p joint arm of this m joint in the arm and pull out arm pin mechanism and cylinder pin mechanism to what p saved that arm positions, m wherein, p is natural number, and 1＜p≤m; The row's of rope part comprises m+1 joint arm to n joint arm, and saves arm for arbitrary q wherein, comprises respectively that also driving this q joint arm flexible semi-girder rope row and contracting arm rope arranges, and wherein n, q are natural number, and m＜q≤n; The semi-girder rope package of q joint arm is drawn together: the semi-girder runner of q joint arm is installed in the top that q-1 saves arm; The semi-girder drag-line of q joint arm, its first end are fixed in q-2 joint arm bottom, and the second end is fixed in the bottom of q joint arm, the semi-girder runner of middle pile warp q-1 joint arm; The contracting arm rope package of q joint arm is drawn together: the contracting arm runner of q joint arm is installed in the bottom that q-1 saves arm; The semi-girder drag-line of q joint arm, its first end are fixed in q-2 joint arm top, and the second end is fixed in the bottom of q joint arm, the contracting arm runner of middle pile warp q-1 joint arm.
Further, in the single-cylinder bolt part, the rod end of telescopic oil cylinder is fixed on the l joint arm, and the cylinder barrel end extends towards the direction of stretching out of Multi-section arm telescopic device; Pull out arm pin mechanism and cylinder pin mechanism and be installed on the end towards rod end of the cylinder barrel of telescopic oil cylinder; Be provided with the arm pin on the sidewall of arbitrary p joint arm, the arm pin drives by pulling out the arm pin mechanism, optionally stretches out knock hole with the sidewall upper arm pegs retraction knock hole of p-1 joint arm and arm pin and matches; Be provided with the cylinder pin-and-hole on the diapire of arbitrary p joint arm, the cylinder pin-and-hole matches with the cylinder pin that stretches out of cylinder pin mechanism.
Further, semi-girder runner and contracting arm runner are fixed pulley, and semi-girder drag-line and contracting arm drag-line are stay cord.
Further, telescopic oil cylinder is arranged along the central axis of Multi-section arm telescopic device.
Further, n 〉=m+2.
Further, m 〉=3, n 〉=m+2.
According to a further aspect in the invention, provide a kind of hoisting crane, comprised arm, it is characterized in that, it is characterized in that, each Multi-section arm telescopic device among the arm employing claim 1-6.
The present invention has following technique effect:
1, in the rope row part of the present invention, for the arbitrary q joint arm in the rope row part, rope row mechanism includes and drives the flexible semi-girder rope row of this q joint arm and contracting arm rope row, and wherein q is natural number, and m＜q≤n.Because flexible rope row and contracting arm rope row include separately independently runner and drag-line, each saves the semi-girder rope row of arm and contracting arm rope row's principle of work all is identical, therefore, this structure disposes the expansion of the quantity of the joint arm that is beneficial to rope row part, thereby can realize easily the more expansion of single oil cylinder.
2, because the rod end of telescopic oil cylinder is fixed on the l joint arm, the cylinder barrel end extends towards the direction of stretching out of Multi-section arm telescopic device; Pull out arm pin mechanism and cylinder pin mechanism and be installed on the end towards rod end of the cylinder barrel of telescopic oil cylinder; Be provided with the arm pin on the sidewall of arbitrary p joint arm, the arm pin drives by pulling out the arm pin mechanism, optionally stretches out knock hole with the sidewall upper arm pegs retraction knock hole of p-1 joint arm and arm pin and matches; Be provided with the cylinder pin-and-hole on the diapire of arbitrary p joint arm, the cylinder pin-and-hole matches with the cylinder pin that stretches out of cylinder pin mechanism.Under this configuration structure, the pin that plugs and unplugs of arm pin is finished by pulling out the arm pin mechanism, when telescopic oil cylinder stretches, carry out first joint arm flexible of the most close rope row part in the joint arm that the single cylinder plug pin portion divides, like this, the flexible of this joint arm will directly be arranged the joint arm quick-expansion of part with running rope, thereby can improve stretching speed.
3, independent external arm pin is not set between basic arm and second section arm, the top of the cylinder barrel of telescopic oil cylinder does not need to arrange runner yet, simplifies the structure.
4, according to the configuration structure of single-cylinder bolt part, the single-cylinder bolt part can dispose more than three joint arms, and it is constant that telescopic oil cylinder drives the principle of more joint arms.Therefore, single-cylinder bolt part of the present invention can realize the more expansion of single oil cylinder.
Description of drawings
The Figure of description 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 has schematically shown the structural representation of Multi-section arm telescopic device of the present invention.
The specific embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Referring to accompanying drawing, multi-stage telescopic arms is comprised of single-cylinder bolt part and rope row part, and single-cylinder bolt partly is basic arm 210, second section arm 211 and the 3rd joint arm 212, and rope row part is the 3rd joint arm 212, the 4th joint arm 213 and the 5th joint arm 214.The terminal head of the piston rod 2314 of telescopic oil cylinder 231 is fixed on the basic arm 210, pulls out arm pin mechanism 2312 and cylinder pin 2313 devices are installed on the cylinder barrel end.
Position shown in Fig. 1 is that Multi-section arm telescopic device is in retracted mode.When Multi-section arm telescopic device was overhanging, the course of action of single-cylinder bolt part was as follows:
Telescopic oil cylinder is in retracted mode shown in the figure.When Multi-section arm telescopic device is overhanging, release first the 3rd joint arm 222, release again second section arm 221.The push of the 3rd joint arm 222 is: from state shown in the figure, cylinder pin 2313 is inserted the 3rd joint arm 222 ends, and the second arm pin 222 is extracted; Then, telescopic oil cylinder is overhanging, and the 3rd joint arm is released, and arrives concrete extended position; The second arm pin 222 is inserted, and cylinder pin 2313 is retracted.After the 3rd joint arm 222 is released again, according to same sequence of operation second section arm 211 is released.
When Multi-section arm telescopic device was retracted, the course of action of single-cylinder bolt part was with aforementioned opposite.
What need to know is, when single-cylinder bolt partly moves, wherein the 3rd joint arm flexible will drive whole rope row and partly carry out expanding-contracting action.Specifically, the flexible of the 3rd joint arm 212 will drive the 4th joint arm 213 and the 5th joint arm 214 stretches by runner and drag-line.
The structure of rope row part is as follows:
The semi-girder runner 244 of the 4th joint arm is installed at the 3rd joint arm 212 tops, the semi-girder runner 243 of the 5th joint arm is installed at the 4th joint arm 213 tops, semi-girder drag-line 251 1 ends of the 4th joint arm 213 are fixed in second section arm 211 bottoms, the other end is fixed in the 4th joint arm 213 bottoms, the semi-girder runner 243 of middle pile warp the 4th joint arm; Semi-girder drag-line 252 1 ends of the 4th joint arm 213 are fixed in the 3rd joint arm 212 bottoms, and the other end is fixed in the 5th joint arm 214 bottoms, the semi-girder runner 242 of middle pile warp the 5th joint arm.
When the single-cylinder bolt part is released the 3rd joint arm 212 with speed V, the 4th joint arm 213 will be released with the speed of 2V with respect to the 3rd joint arm 212, and the 5th joint arm 214 will be released with the speed of 2V with respect to the 4th joint arm 213.
The contracting arm runner 243, the four that the 3rd joint arm 212 bottoms are equipped with the 4th joint arm 213 saves the contracting arm runner 244 that the 5th joint arm is installed in arms 213 bottoms.Contracting arm drag-line 253 1 ends of the 4th joint arm 213 are fixed in the 3rd joint arm 212 tops, and the other end is fixed in the 4th joint arm 213 bottoms, the contracting arm runner 243 of middle pile warp the 4th joint arm; Contracting arm drag-line 254 1 ends of the 5th joint arm 214 are fixed in the 4th joint arm 213 tops, and the other end is fixed in the 5th joint arm 214 bottoms, the contracting arm runner 244 of middle pile warp the 5th joint arm 214.
Retract with speed V when the single-cylinder bolt part saves arm 212 with the 3rd, the 4th joint arm 213 will be retracted with the speed of 2V with respect to the 3rd joint arm 212, and the 5th saves arm 214 retracts with the speed of 2V with respect to four joint arms 213.
Thereby the 3rd joint arm 212 flexible drives fourth, fifth joint arm 213,214 synchronization telescope.
The present invention is not limited to the situation of only having five joint arms, and last single oil cylinder is rope row mode, and front m joint arm is realized by single-cylinder bolt, when improving large arm stretching speed, does not affect the lift heavy performance.
The present invention also provides a kind of hoisting crane (for example car hosit), and it comprises arm, and arm adopts any Multi-section arm telescopic device of front.
To sum up, Multi-section arm telescopic device of the present invention is combined by single-cylinder bolt part and rope row part, the piston rod head of telescopic oil cylinder (being rod end) is fixed on the basic arm, pulls out the arm pin mechanism and the cylinder pin assembly is installed on the cylinder barrel end, realizes the insert-pull pin action.Multi-stage telescopic arms comprises basic arm at least three joint telescopic booms, and plug pin portion is divided and comprised basic arm and adjacent at least one joint telescopic boom with it, and rope row part comprises at least two joint telescopic booms that are set in the latch connecting bridge.Rope row connecting bridge is that the minor details arm of multi-stage telescopic arms, inferior minor details arm and joint arm third from the bottom form, joint arm third from the bottom is the minor details telescopic boom of latch telescopic boom part, when joint arm third from the bottom is flexible by oil cylinder, utilize runner and drag-line to realize the synchronization telescope action.
The present invention is by rope row mechanism, and the telescopic boom joint number that has realized the synchronization telescope of rope row part can be the more more piece except three joints, for example four joints, five joints.
The innovative point of present patent application uses single-cylinder bolt and rope row's combination to realize flexible to single oil cylinder, combines the advantage of the flexible technology of single-cylinder bolt and the flexible technology of rope row, easier the flexible of single oil cylinder of realizing of the function mode of telescoping cylinder.Therefore, the present invention can realize flexible efficient and the more expansion of single oil cylinder of the flexible and Effective Raise jib of single oil cylinder.
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 (7)
1. a Multi-section arm telescopic device comprises single-cylinder bolt part and rope row part, it is characterized in that:
Described single-cylinder bolt partly comprises m joint arm, drive the flexible telescopic oil cylinder of the arbitrary p joint arm of this m joint in the arm and pull out arm pin mechanism and cylinder pin mechanism to what described p saved that arm positions, m wherein, and p is natural number, and 1＜p≤m;
Described rope row part comprises m+1 joint arm to n joint arm, and saves arm for arbitrary q wherein, comprises respectively that also driving this q joint arm flexible semi-girder rope row and contracting arm rope arranges, and wherein n, q are natural number, and m＜q≤n;
The semi-girder rope package of described q joint arm is drawn together:
The semi-girder runner of q joint arm is installed in the top that q-1 saves arm;
The semi-girder drag-line of q joint arm, its first end are fixed in q-2 joint arm bottom, and the second end is fixed in the bottom of q joint arm, the semi-girder runner of the described q-1 joint of middle pile warp arm;
The contracting arm rope package of described q joint arm is drawn together:
The contracting arm runner of q joint arm is installed in the bottom that q-1 saves arm;
The contracting arm drag-line of q joint arm, its first end are fixed in q-2 joint arm top, and the second end is fixed in the bottom of q joint arm, the contracting arm runner of the described q-1 joint of middle pile warp arm.
2. Multi-section arm telescopic device according to claim 1 is characterized in that, in described single-cylinder bolt part, the rod end of described telescopic oil cylinder is fixed on the 1st joint arm, and the cylinder barrel end extends towards the direction of stretching out of described Multi-section arm telescopic device;
Describedly pull out the end towards described rod end that arm pin mechanism and cylinder pin mechanism are installed on the cylinder barrel of described telescopic oil cylinder;
Be provided with the arm pin on the sidewall of arbitrary described p joint arm, described arm pin is driven by the described arm pin mechanism that pulls out, and optionally stretches out knock hole with the sidewall upper arm pegs retraction knock hole of p-1 joint arm and arm pin and matches;
Be provided with the cylinder pin-and-hole on the diapire of arbitrary described p joint arm, described cylinder pin-and-hole matches with the cylinder pin that stretches out of described cylinder pin mechanism.
3. Multi-section arm telescopic device according to claim 1 and 2 is characterized in that, described semi-girder runner and contracting arm runner are fixed pulley, and described semi-girder drag-line and contracting arm drag-line are stay cord.
4. Multi-section arm telescopic device according to claim 1 and 2 is characterized in that, described telescopic oil cylinder is arranged along the central axis of described Multi-section arm telescopic device.
5. Multi-section arm telescopic device according to claim 1 and 2 is characterized in that, n 〉=m+2.
6. Multi-section arm telescopic device according to claim 1 and 2 is characterized in that, m 〉=3, n 〉=m+2.
7. a hoisting crane comprises arm, it is characterized in that, described arm adopts each described Multi-section arm telescopic device among the claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110170058 CN102285598B (en) | 2011-06-22 | 2011-06-22 | Multi-section arm telescopic device and crane with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110170058 CN102285598B (en) | 2011-06-22 | 2011-06-22 | Multi-section arm telescopic device and crane with same |
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| Publication Number | Publication Date |
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| CN102285598A CN102285598A (en) | 2011-12-21 |
| CN102285598B true CN102285598B (en) | 2013-03-27 |
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| CN 201110170058 Active CN102285598B (en) | 2011-06-22 | 2011-06-22 | Multi-section arm telescopic device and crane with same |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103058077B (en) * | 2012-12-27 | 2015-10-28 | 三一重工股份有限公司 | Hoisting crane and crane arm thereof |
| CN103334767B (en) * | 2013-07-11 | 2015-09-30 | 福建正方机械有限公司 | Synchronization mechanism telescopic arm |
| CN103508335B (en) * | 2013-08-26 | 2015-08-12 | 三一汽车起重机械有限公司 | Telescopic boom device and engineering truck |
| CN103466474B (en) * | 2013-08-26 | 2015-10-14 | 三一汽车起重机械有限公司 | Telescopic boom device and car hosit |
| CN107055351A (en) * | 2016-11-30 | 2017-08-18 | 内蒙动力机械研究所 | A kind of telescopic arm |
| CN110980555A (en) * | 2019-12-27 | 2020-04-10 | 三一汽车起重机械有限公司 | Telescopic arm of crane and crane |
| CN111675119B (en) * | 2020-06-23 | 2022-03-22 | 三一汽车起重机械有限公司 | Telescopic arm of crane and crane |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418805A (en) * | 2002-11-13 | 2003-05-21 | 徐州重型机械厂 | Multiple arms telescopic device automatically controlled by single telescopic cylinder |
| CN2868971Y (en) * | 2005-12-15 | 2007-02-14 | 三一重工股份有限公司 | Multisection telescopic arm rack |
| CN201002936Y (en) * | 2006-12-28 | 2008-01-09 | 长沙中联重工科技发展股份有限公司 | Radial arrangement synchronization extension mechanism for crane |
| CN201214601Y (en) * | 2008-05-07 | 2009-04-01 | 长沙中联重工科技发展股份有限公司 | Main arm telescopic mechanism for crane |
| CN201694761U (en) * | 2009-12-04 | 2011-01-05 | 三一汽车制造有限公司 | Main arm telescopic mechanism and automobile crane with same |
| CN201793336U (en) * | 2010-09-01 | 2011-04-13 | 三一汽车起重机械有限公司 | Automobile crane and telescopic boom device thereof |
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2011
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