CN103058074A - Crane and crane arm system thereof - Google Patents
Crane and crane arm system thereof Download PDFInfo
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- CN103058074A CN103058074A CN 201210583545 CN201210583545A CN103058074A CN 103058074 A CN103058074 A CN 103058074A CN 201210583545 CN201210583545 CN 201210583545 CN 201210583545 A CN201210583545 A CN 201210583545A CN 103058074 A CN103058074 A CN 103058074A
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- bar
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- crane
- rear mast
- link span
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Abstract
The invention discloses a crane arm system thereof. The crane arm system comprises a principal arm, a luffing auxiliary arm, a traction part, a front mast, a rear mast, a first connection rack, a second connection rack, and a forward-tilt resistant rod which is arranged a rear mast side close to the front mast. The principal arm is hinged to the luffing auxiliary arm by the first connection rack and the second connection rack. One end of the forward-tilt resistant rod is hinged to one of the first connection rack and the rear mast and the other end of the forward-tilt resistant rod is in a slip connection relationship with the other one of the first connection rack and the rear mast. The forward-tilt resistant rod is used for preventing the rear mast in a preset position from rotating to the front mast. The crane arm system prevents a series of risks caused by rear mast forward-tilt in crane operation thereby guaranteeing crane operation safety. The invention also discloses a crane with the crane arm system.
Description
Technical field
The present invention relates to construction machinery and equipment, be specifically related to a kind of crane arm system of hoisting crane.In addition, the invention still further relates to the hoisting crane with this crane arm system.
Background technology
Along with the fast development of economic society, lifting operation just towards the future development of maximization, scale, has proposed more and more higher requirement to this to performance of carrying out the hoisting crane that lifts.
As shown in Figure 1, goliath generally includes chassis 16 and the crane arm system that is located on the chassis 16, the crane arm system comprises pull bar 14, drag-line 15, front mast 13, rear mast 12, principal arm 10, variable-amplitude auxiliary arm 11, the first link span 17 and the second link span 18, principal arm 10 is hinged by the first link span 17 and the second link span 18 with variable-amplitude auxiliary arm 11, and rear mast 12, front mast 13 are hinged with the first link span 17 and the second link span 18 respectively.Such hoisting crane when stretching crane arm, extend first principal arm 10, then the pull-up variable-amplitude auxiliary arm 11, when shrinking crane arm, put down first variable-amplitude auxiliary arm 11, then shrink principal arm 10.In the engineering application process, find that such hoisting crane is when stretching or shrink crane arm, there is the phenomenon (situation that mast is crossed vertical plane when the mast direction is rotated forward namely) that leans forward in rear mast 12, then mast leans forward and easily causes the part parts in the crane arm system stressed excessive, this can bring infringement to these parts, and then threatens the safety of operation of hoisting crane.
Therefore, how to avoid the rear mast of crane arm system to lean forward, with the safety of lift crane, be still the technical matters that those skilled in the art need to be resolved hurrily.
Summary of the invention
In view of this, the present invention proposes a kind of crane arm system, utilizes the effectively safety of lift crane of this crane arm system; In addition, the invention allows for a kind of hoisting crane with this crane arm system.
On the one hand, the present invention proposes a kind of crane arm system, comprise principal arm, variable-amplitude auxiliary arm, drawing part, front mast, rear mast, the first link span, the second link span and the anti-bar that leans forward; Described principal arm and variable-amplitude auxiliary arm are hinged by the first link span and the second link span; An end and one of the first link span and rear mast of the described anti-bar that leans forward are hinged, the another one sliding block joint in the other end and the first link span and the rear mast; The described anti-bar that leans forward is used for stoping when described rear mast arrives the desired location described rear mast to continue the direction rotation of mast forward.
Further, the crane arm system also comprises auxiliary rod, and an end of described auxiliary rod is articulated in the middle part of the anti-bar that leans forward, and its other end is articulated on the rear mast.
Further, the crane arm system also comprises the first Connection Block with a plurality of hinge holes, and it is hinged that the described anti-bar that leans forward passes through the first Connection Block and rear mast or the first link span.
Further, the crane arm system also comprises the second Connection Block, and the second Connection Block is provided with the slip draw-in groove, and the described anti-bar that leans forward is by described the second Connection Block and described rear mast or the first link span sliding block joint.
Further, described the first link span and/or rear mast are provided with chute, an end and the described chute sliding connection of the described anti-bar that leans forward.
Further, described the first link span comprises pipe link; Described rear mast comprises edge-on bar; The two ends of the described anti-bar that leans forward respectively with pipe link be connected bar and be connected, and described prevent leaning forward bar, pipe link and edge-on bar all are positioned at vertical plane.
The crane arm system that the present invention proposes comprises principal arm, variable-amplitude auxiliary arm, drawing part, front mast, rear mast, the first link span, the second link span and is located at rear mast near the anti-bar that leans forward of front mast one side; Described principal arm and variable-amplitude auxiliary arm are hinged by the first link span and the second link span; An end and one of the first link span and rear mast of the described anti-bar that leans forward are hinged, the another one sliding block joint in the other end and the first link span and the rear mast.This crane arm system is by the anti-bar that leans forward is set, and when rear mast turned to desired location (such as vertical plane), the described anti-bar that leans forward supported rear mast, continues mast direction rotation forward to stop it, and then reaches the purpose that prevents that rear mast from leaning forward.Utilize this crane arm system, a series of risks that mast leans forward and causes after can avoiding in the crane operation process, thus make the safety of operation of hoisting crane more secure.
On the other hand, the invention allows for a kind of hoisting crane, comprise chassis and above-mentioned each described crane arm system, described crane arm system is located on the described chassis.
Further, described chassis comprises wheel type traveling mechanism.
Further, described chassis comprises crawler type walking mechanism.
Compared with prior art, the hoisting crane that the present invention proposes comprises above-mentioned crane arm system, and this crane arm system can prevent effectively that rear mast from leaning forward, thereby can avoid the harm of being leaned forward and being brought safely to crane operation by rear mast, therefore, the safety of this hoisting crane is better.
Description of drawings
The accompanying drawing that consists of a part of the present invention is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the medium-and-large-sized hoisting crane of prior art;
The local structure schematic diagram of the crane arm system that Fig. 2 provides for the specific embodiment of the invention.
The specific embodiment
Need to prove, in the situation that do not conflict, embodiment and the feature among the embodiment among the present invention can make up mutually.Be elaborated below in conjunction with 2 pairs of specific embodiments of the invention of accompanying drawing.
For the rear mast 2 of avoiding the crane arm system leans forward, safety with lift crane, the specific embodiment of the invention proposes a kind of crane arm system, comprises principal arm, variable-amplitude auxiliary arm, drawing part, front mast 4, rear mast 2, the first link span 6, the second link span 3 and is located at rear mast 2 near the anti-bar 1 that leans forward of front mast 4 one sides; Described principal arm and variable-amplitude auxiliary arm are hinged by the first link span 6 and the second link span 3; One end of the described anti-bar 1 that leans forward and the first link span 6 and rear mast 2 both one of hinged, the other end and the first link span 6 and the rear mast 2 another one sliding block joint among both; Mast 2 continued the direction rotation of mast 4 forward after the described bar 1 of preventing leaning forward was used for stoping when rear mast 2 arrives the desired location.The drawing part here is specifically as follows the combination of pull bar or drag-line or pull bar and drag-line; The annexation of anti-lean forward bar 1 and the first link span 6, rear mast 2 is specifically as follows: prevent leaning forward bar 1 one ends and the first link span 6 are hinged, the other end and rear mast 2 sliding block joints, perhaps, anti-lean forward bar 1 one ends and the first link span 6 sliding block joints, the other end and rear mast 2 are hinged.This crane arm system arranges the anti-bar 1 that leans forward by the side at rear mast 2 close front masts 4, when rear mast 2 turns to desired location (such as vertical plane), the described anti-bar 1 that leans forward supports rear mast 2, rotate to stop rear mast 2 to continue forward mast 4 directions, and then reach the purpose that prevents that rear mast 2 from leaning forward.Utilize this crane arm system, a series of risks that mast 2 leans forward and causes after can avoiding in the crane operation process, thus make the safety of operation of hoisting crane more secure.
In further technical scheme, the crane arm system also comprises auxiliary rod 7, and an end of described auxiliary rod 7 is articulated in the middle part of the anti-bar 1 that leans forward, and its other end is articulated on the rear mast 2.The middle part refers to the center of auxiliary rod 7 or near the position the center, is preferably auxiliary rod 7 centers; The other end is preferably disposed on the position of suitable power transmission on the rear mast 2.Can strengthen the support degree of the anti-bar 1 that leans forward by auxiliary rod 7 is set, avoid anti-bar 1 end of leaning forward stressed excessive and crooked.
In further technical scheme, the crane arm system also comprises the first Connection Block 9 with a plurality of hinge holes, and the described anti-bar 1 that leans forward is hinged with rear mast 2 or the first link span 6 by the first Connection Block 9.In specifically arranging, each hinge hole can be used for the hinged anti-bar 1 that leans forward, and by a plurality of hinge holes are set, can select as required easily in installation process.
In further technical scheme, described the first link span 6 comprises pipe link 60; Described rear mast 2 comprises edge-on bar 8; The two ends of the described anti-bar 1 that leans forward respectively with pipe link 60 be connected bar 8 and be connected, and described prevent leaning forward bar 1, pipe link 60 and edge-on bar 8 all are positioned at vertical plane.The turning cylinder of mast 2 is parallel to horizontal surface generally, by described anti-lean forward bar 1, pipe link 60 and edge-on bar 8 are located in the vertical plane, can make the power of only bearing both direction in the vertical plane in the bar process that mast 2 leans forward after preventing that leans forward of putting, and then improve anti-the stressed of bar 1 that lean forward.
The anti-sliding block joint that leans forward bar 1 and rear mast 2 or the first link span 6 specifically can adopt following dual mode: 1) the second Connection Block 5 is set, the second Connection Block 5 is provided with the slip draw-in groove, anti-bar 1 and the second Connection Block 5 of leaning forward is hinged, and the second Connection Block 5 is by slip draw-in groove and described rear mast 2 or the first link span 6 sliding block joints; 2) at rear mast 2 or the first link span 6 chute is set, the end of the anti-bar 1 that leans forward is hinged with slide block, and slide block slides and is arranged in the chute.
On the other hand, the invention allows for a kind of hoisting crane, comprise chassis and above-mentioned crane arm system, described crane arm system is located on the chassis.The chassis here is specifically as follows the belt wheel traveling gear, also can be with crawler type walking mechanism.
Compared with prior art, the hoisting crane that the present invention proposes comprises above-mentioned crane arm system, and this crane arm system can prevent effectively that rear mast 2 from leaning forward, thereby can avoid the harm of being leaned forward and being brought safely to crane operation by rear mast 2, therefore, the safety of this hoisting crane is better.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. crane arm system, comprise principal arm, variable-amplitude auxiliary arm, drawing part, front mast (4), rear mast (2), the first link span (6) and the second link span (3), described principal arm and variable-amplitude auxiliary arm are hinged by the first link span (6) and the second link span (3), it is characterized in that, also comprise the anti-bar (1) that leans forward, one end of the described anti-bar (1) that leans forward and the first link span (6) and rear mast (2) both one of hinged, the other end and the first link span (6) and rear mast (2) the another one sliding block joint among both, the described anti-bar (1) that leans forward is used for stoping when described rear mast (2) arrives the desired location described rear mast (2) to continue to rotate toward the direction of described front mast (4).
2. crane arm according to claim 1 system is characterized in that, also comprises auxiliary rod (7), and an end of described auxiliary rod (7) is articulated in the middle part of anti-bar (1) of leaning forward, and its other end is articulated on the rear mast (2).
3. crane arm according to claim 1 system is characterized in that, also comprises the first Connection Block (9) with a plurality of hinge holes, and the described anti-bar (1) that leans forward is hinged with rear mast (2) or the first link span (6) by the first Connection Block (9).
4. crane arm according to claim 1 system, it is characterized in that, also comprise the second Connection Block (5), the second Connection Block (5) is provided with the slip draw-in groove, and the described anti-bar (1) that leans forward is by described the second Connection Block (5) and described rear mast (2) or the first link span (6) sliding block joint.
5. crane arm according to claim 1 system is characterized in that, is provided with chute on described the first link span (6) and/or the described rear mast (2), an end and the described chute sliding connection of the described anti-bar (1) that leans forward.
6. crane arm according to claim 1 system is characterized in that, described the first link span (6) comprises pipe link (60); Described rear mast (2) comprises edge-on bar (8); The two ends of the described anti-bar (1) that leans forward are connected with pipe link (60) and the bar (8) of being connected respectively, and described prevent leaning forward bar (1), pipe link (60) and edge-on bar (8) all are positioned at vertical plane.
7. a hoisting crane comprises the chassis, it is characterized in that, comprises each described crane arm system of claim 1-6, and described crane arm system is located on the described chassis.
8. hoisting crane according to claim 7 is characterized in that, described chassis comprises wheel type traveling mechanism.
9. hoisting crane according to claim 7 is characterized in that, described chassis comprises crawler type walking mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210583545 CN103058074A (en) | 2012-12-28 | 2012-12-28 | Crane and crane arm system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210583545 CN103058074A (en) | 2012-12-28 | 2012-12-28 | Crane and crane arm system thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103058074A true CN103058074A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210583545 Pending CN103058074A (en) | 2012-12-28 | 2012-12-28 | Crane and crane arm system thereof |
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| CN (1) | CN103058074A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601082A (en) * | 2013-11-22 | 2014-02-26 | 中联重科股份有限公司 | Crane and arm rising method thereof |
| CN107758529A (en) * | 2017-11-27 | 2018-03-06 | 深圳龙海特机器人科技有限公司 | Crane arm and hoisting apparatus |
-
2012
- 2012-12-28 CN CN 201210583545 patent/CN103058074A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103601082A (en) * | 2013-11-22 | 2014-02-26 | 中联重科股份有限公司 | Crane and arm rising method thereof |
| CN103601082B (en) * | 2013-11-22 | 2015-06-17 | 中联重科股份有限公司 | Crane and arm rising method thereof |
| CN107758529A (en) * | 2017-11-27 | 2018-03-06 | 深圳龙海特机器人科技有限公司 | Crane arm and hoisting apparatus |
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Application publication date: 20130424 |