CN103171984A - Variable-amplitude limiting device and crane - Google Patents
Variable-amplitude limiting device and crane Download PDFInfo
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- CN103171984A CN103171984A CN2013101158075A CN201310115807A CN103171984A CN 103171984 A CN103171984 A CN 103171984A CN 2013101158075 A CN2013101158075 A CN 2013101158075A CN 201310115807 A CN201310115807 A CN 201310115807A CN 103171984 A CN103171984 A CN 103171984A
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Abstract
The invention provides a variable-amplitude limiting device and a crane. The variable-amplitude limiting device comprises a switching element, a first stopping block (12) capable of with adjustable position and a second stopping block (13) with adjustable position. The variable-amplitude limiting device also comprises a connection piece (14) and a force applying part (15), wherein the connection piece (14) and the force applying part (15) are respectively arranged on two sides of the switching element and drive the switching element to do variable-amplitude region motion limited by the first stopping block (12) and the second stopping block (13); when touching the first stopping block (12), the switching element sends out a first limiting signal; and when touching the second stopping block (13), the switching element sends out a second limiting signal. By adopting the variable-amplitude limiting device, the problem that the variable-amplitude limiting device in the prior art cannot be adjusted can be solved.
Description
Technical field
The present invention relates to the hoisting crane field, more specifically, relate to a kind of variable-amplitude limiting device and hoisting crane.
Background technology
In prior art, many occasions need to use variable-amplitude limiting device, for example, and the machinery that hoisting crane or other need to limit subtended angle or amplitude of fluctuation.The below describes variable-amplitude limiting device of the prior art take hoisting crane (particularly arm tower crane) as example.
Fig. 1 shows the fundamental diagram of the variable-amplitude limiting device that uses in hoisting crane of the prior art.As shown in Figure 1, but hoisting crane of the prior art comprises equilibrium arm 40, the crane arm 30 that is connected with equilibrium arm 40 pivotables, and two limit switches 11.Please refer to Fig. 1, crane arm 30 can be in Fig. 1 A and B two positions between rotate, when crane arm moves to A or B position, semicircle device 31 on crane arm will be touched with corresponding limit switch 11, thereby produce corresponding limit signal, move to prevent crane arm 30 from surpassing these two limit switch 11 limited ranges.
Because the installation site of two limit switches is fixed, therefore, this limit method of the prior art can only carry out two end positions spacing, can not realize the spacing of varied angle and amplitude.Yet, according to the condition of service of reality, may need to regulate the luffing scope of crane arm, therefore, variable-amplitude limiting device of the prior art is difficult to the luffing scope of crane arm is regulated, and therefore brings a lot of inconvenience to construction.
Summary of the invention
The present invention aims to provide a kind of variable-amplitude limiting device and hoisting crane, the problem that can not regulate to solve variable-amplitude limiting device of the prior art.
For solving the problems of the technologies described above, according to an aspect of the present invention, provide a kind of variable-amplitude limiting device, comprising: on-off element, the second adjustable block of the first block and position that the position is adjustable; Variable-amplitude limiting device also comprises attaching parts and force application part; Attaching parts and force application part are separately positioned on the both sides of on-off element; The interval motion of luffing that attaching parts and force application part driving switch element limit at the first block and the second block, on-off element sends the first limit signal when touching the first block, and on-off element sends the second limit signal when touching the second block.
Further, variable-amplitude limiting device also comprises mount pad, and the first block and the second stop location are arranged on mount pad adjustablely.
Further, variable-amplitude limiting device also comprises slide bar, and the first block and the second block adjustable ground are arranged on slide bar.
Further, variable-amplitude limiting device also comprise guide rail and with the on-off element mount pad of guide rail sliding block joint, guide rails assembling is on mount pad, on-off element is connected with the on-off element mount pad.
Further, force application part comprises weight and stay cord, and variable-amplitude limiting device also comprises the first track adjusting wheel, and an end of stay cord is connected with weight, and the other end of stay cord is connected with the on-off element mount pad after walking around the first track adjusting wheel.
Further, force application part is elastic element, and an end of elastic element is captiveed joint with mount pad, and the other end of elastic element is connected with the on-off element mount pad.
Further, variable-amplitude limiting device also comprises the second track adjusting wheel, and attaching parts is connection cord, and connection cord is walked around the second track adjusting wheel.
Further, variable-amplitude limiting device also comprises the wiring assembly of mount pad motion relatively, captives joint with the wiring assembly in the end of connection cord, and the wiring assembly comprises the conductor rope groove.
According to a further aspect in the invention, a kind of hoisting crane is provided, comprise crane arm, equilibrium arm and variable-amplitude limiting device, crane arm is connected pivotly with equilibrium arm, this variable-amplitude limiting device is above-mentioned variable-amplitude limiting device, the attaching parts of variable-amplitude limiting device is connected with crane arm, the on-off element of variable-amplitude limiting device, the first block and the second block are arranged on equilibrium arm, attaching parts is connection cord, variable-amplitude limiting device also comprises the wiring assembly that is arranged on crane arm, and connection cord is captiveed joint with the wiring assembly.
Further, the luffing mechanism coaxial rotation of wiring assembly and hoisting crane makes when the crane arm of hoisting crane moves, and drives attaching parts and on-off element up-and-down movement.
Because the position of the first block and the second block is adjustable, therefore, under different operating modes, can be according to the requirement of engineering of reality, regulate the position of the first block and/or the second block, thereby regulate easily the luffing scope of luffing mechanism, bring great convenience to construction.
Description of drawings
The accompanying drawing 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 fundamental diagram of the variable-amplitude limiting device that uses in hoisting crane of the prior art;
Fig. 2 has schematically shown the installation block diagram of the variable-amplitude limiting device in the present invention; And
Fig. 3 has schematically shown another scheme of installation of the variable-amplitude limiting device in the present invention.
Reference numeral in figure: 10, variable-amplitude limiting device; 11, limit switch; 12, the first block; 13, the second block; 14, attaching parts; 15, force application part; 16, mount pad; 17, slide bar; 18, guide rail; 19, wiring assembly; 20, the first guide wheel bracket; 21, the second guide wheel bracket; 22, installation sheet; 23, on-off element mount pad; 30, crane arm; 31, semicircle device; 40, equilibrium arm; 151, weight; 152, stay cord; 191, conductor rope groove.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As a first aspect of the present invention, provide a kind of variable-amplitude limiting device.As shown in Figures 2 and 3, this variable-amplitude limiting device comprises: on-off element (not shown), the second adjustable block 13 of the first block 12 and position that the position is adjustable.Variable-amplitude limiting device also comprises attaching parts 14 and force application part 15, and wherein, attaching parts 14 and force application part 15 are separately positioned on the both sides of on-off element.The interval motion of luffing that attaching parts 14 and force application part 15 driving switch elements limit at the first block 12 and the second block 13, on-off element sends the first limit signal when touching the first block 12, on-off element sends the second limit signal when touching the second block 13.Preferably, on-off element can be limit switch, also can other on-off element.
Please refer to Fig. 2 and Fig. 3, the interval motion of luffing that attaching parts 14 and force application part 15 driving switch elements limit at the first block 12 and the second block 13.during work, when the angle (for example elevation angle of crane arm) of the luffing mechanism (for example crane arm of hoisting crane) of outside when diminishing, be subject to the effect of force application part 15 due to on-off element, therefore, when moving downward under the effect of attaching parts 14 at luffing mechanism, on-off element moves downward under the effect of force application part 15, until on-off element touches the first block 12, so on-off element is triggered under the effect of the first block 12 and sends the first limit signal, thereby show the change angle (for example crane arm has arrived the minimum elevation angle) that luffing mechanism has moved and arrived minimum permission.Otherwise, when the angle (for example elevation angle of crane arm) of the luffing mechanism (for example crane arm of hoisting crane) of outside when becoming large, attaching parts 14 overcomes the counter-force upward movement of force application part 15 under the driving of luffing mechanism, thereby drive the on-off element upward movement, until on-off element touches the second block 13, so on-off element is triggered and sends the second limit signal, thereby show the change angle (for example crane arm has arrived the maximum elevation angle) that luffing mechanism has moved and arrived maximum permission under the effect of the second block 13.
Like this, only need just can realize the spacing of two end positions by an on-off element, thereby reduced cost.Further, because the position of the first block 12 and the second block 13 is adjustable, therefore, under different operating modes, can be according to the requirement of engineering of reality, regulate the position of the first block 12 and/or the second block 13, thereby regulate easily the luffing scope of luffing mechanism, bring great convenience to construction.
Preferably, variable-amplitude limiting device is arranged on mount pad 16, preferably with also comprising mount pad 16, the first blocks 12 and the second block 13 position-adjustable, the first block 12 and the second block 13 are bending, in order to utilize the end trigger switch element action of its bending.Further, variable-amplitude limiting device comprises that also slide bar 17, the first blocks 12 and the second block 13 adjustable grounds are arranged on slide bar 17, and preferably, slide bar 17 is polished rods.Especially, the two ends of slide bar 17 can be bolted on mount pad 16.For example, can on the first block 12 and the second block 13, the locking screw pit be set, like this, can in the locking screw pit, the jam nut (not shown) be installed, so just can the first block 12 and the second block 13 be locked on slide bar 17 by jam nut.Certainly, the first block 12 and the second block 13 can also be locked by alternate manner and slide bar 17, for example, and by pin or buckle etc.
Preferably, variable-amplitude limiting device also comprise guide rail 18 and with the on-off element mount pad 23 of guide rail 18 sliding block joints, guide rail 18 is arranged on mount pad 16, on-off element is connected with on-off element mount pad 23.By guide rail 18 and on-off element mount pad 23, can limit better the motion path of on-off element.
In embodiment as shown in Figures 2 and 3, force application part 15 comprises weight 151 and stay cord 152, variable-amplitude limiting device also comprises the first track adjusting wheel (not shown), and an end of stay cord 152 is connected with weight 151, and the other end of stay cord 152 is connected with on-off element mount pad 23 after walking around the first track adjusting wheel.Preferably, an end of attaching parts 14 is connected with on-off element mount pad 23.Especially, the first track adjusting wheel is arranged on the first guide wheel bracket 20.Wherein, weight 151 is used for relying on the weight of himself to provide counter-force to on-off element, and the first track adjusting wheel provides motion guide for stay cord 152.So, weight 151 just can the effect of the first track adjusting wheel under, the counter-force of fixed-direction is provided to on-off element, to prevent making on-off element that the problem that swings occurs because the direction of counter-force is unstable, improved reliability and stability.
In another not shown embodiment, force application part 15 can also be elastic element, and an end of elastic element is captiveed joint with mount pad 16, and the other end of elastic element is connected with on-off element mount pad 23.Like this, utilize elastic element also can provide counter-force to on-off element or on-off element mount pad 23.Preferably, elastic element can also be extension spring.
In a preferred embodiment, variable-amplitude limiting device also comprises the second track adjusting wheel, and attaching parts 14 is connection cords, and connection cord is walked around the second track adjusting wheel (not shown).Especially, the second track adjusting wheel is arranged on the second guide wheel bracket 21.Wherein, the second track adjusting wheel plays work to connection cord guiding in order to the pulling force of fixed-direction to be provided, and to prevent making on-off element that the problem that swings occurs because the direction of pulling force is unstable, has improved reliability and stability.
As shown in Figures 2 and 3, in a preferred embodiment, variable-amplitude limiting device also comprises the wiring assembly 19 of mount pad 16 motions relatively, captives joint with wiring assembly 19 in the end of connection cord.Wiring assembly 19 comprises conductor rope groove 191.Especially, described conductor rope groove 191 is arcs.Further, wiring assembly 19 can be pulley, can be also the part (for example 1/4th pulleys) of pulley, can also be the structure of other rope that can be intertwined and connected.Preferably, wiring assembly 19 rotates coaxially with the luffing mechanism of hoisting crane, and like this, the rotation situation of wiring assembly 19 has just reflected the angle situation of change of luffing mechanism.
As a second aspect of the present invention, a kind of hoisting crane is provided, comprise crane arm 30, equilibrium arm 40 and variable-amplitude limiting device, crane arm 30 is connected pivotly with equilibrium arm 40, this variable-amplitude limiting device is the variable-amplitude limiting device 10 in the various embodiments described above, the attaching parts 14 of variable-amplitude limiting device 10 and crane arm 30(be the arm root joint of crane arm particularly) be connected, the on-off element of variable-amplitude limiting device 10, the first block 12 and the second block 13 are arranged on the particularly end face of the main string of equilibrium arm of equilibrium arm 40() on.
Preferably, attaching parts 14 is connection cords, and variable-amplitude limiting device 10 also comprises the wiring assembly 19 that is arranged on crane arm 30, and connection cord is captiveed joint with wiring assembly 19.Preferably, also be provided with installation sheet 22 on wiring assembly 19, installation sheet 22 is arranged on the outside of wiring assembly 19 highlightedly, and like this, wiring assembly 19 can be arranged on installation sheet 22 by bolt etc.
Preferably, the luffing mechanism coaxial rotation of wiring assembly 19 and hoisting crane, and during the motion of the crane arm of hoisting crane, drive attaching parts 14 and on-off element up-and-down movement.
Further, wiring assembly 19 can be pulley, can be also the part (for example 1/4th pulleys) of pulley, can also be the structure of other rope that can be intertwined and connected.Preferably, wiring assembly 19 rotates with one heart with luffing mechanism (for example crane arm), and like this, the rotation situation of wiring assembly 19 has just reflected the angle situation of change of luffing mechanism.Especially, connection cord is that rigidity is non-telescoping, to prevent the flexible error that causes due to connection cord.
Please refer to Fig. 2 and Fig. 3, when the elevation angle of the crane arm of hoisting crane changes, on-off element is under the effect of making a concerted effort of attaching parts 14 and force application part 15, motion up or down, until on-off element touches the second block 13 or the first block 12, so on-off element is triggered under the effect of the second block 13 or the first block 12 and sends the second limit signal or the first limit signal, thereby showing that luffing mechanism has moved arrives the maximum or minimum change angle that allows.Further, because the position of the first block 12 and the second block 13 is adjustable, therefore, under different operating modes, can be according to the requirement of engineering of reality, regulate the position of the first block 12 and/or the second block 13, thereby regulate easily the luffing scope of luffing mechanism, bring great convenience to construction.
The above is only the preferred embodiments of the present invention, 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., within all should being included in protection scope of the present invention.
Claims (10)
1. a variable-amplitude limiting device, is characterized in that, comprising: on-off element, adjustable the second block (13) of the first block (12) and position that the position is adjustable;
Described variable-amplitude limiting device also comprises attaching parts (14) and force application part (15); Described attaching parts (14) and described force application part (15) are separately positioned on the both sides of described on-off element;
Described attaching parts (14) and described force application part (15) drive interval the moving of luffing that described on-off element limits at described the first block (12) and described the second block (13), described on-off element sends the first limit signal when touching described the first block (12), described on-off element sends the second limit signal when touching described the second block (13).
2. variable-amplitude limiting device according to claim 1, is characterized in that, described variable-amplitude limiting device also comprises mount pad (16), and described the first block (12) and described the second block (13) position are arranged on described mount pad (16) adjustablely.
3. variable-amplitude limiting device according to claim 2, is characterized in that, described variable-amplitude limiting device also comprises slide bar (17), and described the first block (12) and described the second block (13) adjustable ground are arranged on described slide bar (17).
4. variable-amplitude limiting device according to claim 2, it is characterized in that, described variable-amplitude limiting device also comprise guide rail (18) and with the on-off element mount pad (23) of described guide rail (18) sliding block joint, described guide rail (18) is arranged on described mount pad (16), and described on-off element is connected with described on-off element mount pad (23).
5. variable-amplitude limiting device according to claim 4, it is characterized in that, described force application part (15) comprises weight (151) and stay cord (152), described variable-amplitude limiting device also comprises the first track adjusting wheel, one end of described stay cord (152) is connected with described weight (151), and the other end of described stay cord (152) is connected with described on-off element mount pad (23) after walking around described the first track adjusting wheel.
6. variable-amplitude limiting device according to claim 4, it is characterized in that, described force application part (15) is elastic element, and an end of described elastic element is captiveed joint with described mount pad (16), and the other end of described elastic element is connected with described on-off element mount pad (23).
7. variable-amplitude limiting device according to claim 4, is characterized in that, described variable-amplitude limiting device also comprises the second track adjusting wheel, and described attaching parts (14) is connection cord, and described connection cord is walked around described the second track adjusting wheel.
8. variable-amplitude limiting device according to claim 7, it is characterized in that, described variable-amplitude limiting device also comprise can relatively described mount pad (16) the wiring assembly (19) of motion, captive joint with described wiring assembly (19) in the end of described connection cord, described wiring assembly (19) comprises conductor rope groove (191).
9. hoisting crane, comprise crane arm (30), equilibrium arm (40) and variable-amplitude limiting device, described crane arm (30) is connected pivotly with described equilibrium arm (40), it is characterized in that, described variable-amplitude limiting device is the described variable-amplitude limiting device of any one (10) in claim 1 to 6, the attaching parts (14) of described variable-amplitude limiting device (10) is connected with described crane arm (30), the on-off element of described variable-amplitude limiting device (10), the first block (12) and the second block (13) are arranged on described equilibrium arm (40), described attaching parts (14) is connection cord, described variable-amplitude limiting device (10) also comprises the wiring assembly (19) that is arranged on described crane arm, described connection cord is captiveed joint with described wiring assembly (19).
10. hoisting crane according to claim 9, it is characterized in that, the luffing mechanism coaxial rotation of described wiring assembly (19) and described hoisting crane makes when the crane arm of described hoisting crane moves, and drives described attaching parts (14) and described on-off element up-and-down movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115807.5A CN103171984B (en) | 2013-04-03 | 2013-04-03 | Variable-amplitude limiting device and crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310115807.5A CN103171984B (en) | 2013-04-03 | 2013-04-03 | Variable-amplitude limiting device and crane |
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| CN103171984A true CN103171984A (en) | 2013-06-26 |
| CN103171984B CN103171984B (en) | 2014-12-24 |
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| CN201310115807.5A Active CN103171984B (en) | 2013-04-03 | 2013-04-03 | Variable-amplitude limiting device and crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275030A (en) * | 2015-11-11 | 2016-01-27 | 太原重工股份有限公司 | Ejection limiting device for cargo boom of excavator |
| CN107399678A (en) * | 2016-05-21 | 2017-11-28 | 中船绿洲镇江船舶辅机有限公司 | Crane avoids chimney device |
| CN108358078A (en) * | 2018-01-19 | 2018-08-03 | 中联重科股份有限公司 | Boom system, luffing range of cantilever support control system and its control method |
| CN109322338A (en) * | 2018-10-30 | 2019-02-12 | 太原重工股份有限公司 | Excavator and its pushing force control method |
| CN112238022A (en) * | 2019-07-18 | 2021-01-19 | 河南森源重工有限公司 | Sprayer and spraying vehicle |
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| CN1095357A (en) * | 1993-10-06 | 1994-11-23 | 青岛华荣经济技术贸易公司 | Limiter of moment |
| JPH09315777A (en) * | 1996-05-22 | 1997-12-09 | Kobe Steel Ltd | Safety device of jib crane |
| CN2638262Y (en) * | 2003-07-15 | 2004-09-01 | 北京航天天达卫星应用技术有限公司 | Satellite antenna limiting mechanism with any rotation angle |
| CN2852780Y (en) * | 2005-07-20 | 2007-01-03 | 张宇 | Back heel massager |
| CN202369304U (en) * | 2011-12-15 | 2012-08-08 | 中联重科股份有限公司 | Variable-amplitude limit device for boom and crane comprising variable-amplitude limit device |
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Patent Citations (5)
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| CN1095357A (en) * | 1993-10-06 | 1994-11-23 | 青岛华荣经济技术贸易公司 | Limiter of moment |
| JPH09315777A (en) * | 1996-05-22 | 1997-12-09 | Kobe Steel Ltd | Safety device of jib crane |
| CN2638262Y (en) * | 2003-07-15 | 2004-09-01 | 北京航天天达卫星应用技术有限公司 | Satellite antenna limiting mechanism with any rotation angle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275030A (en) * | 2015-11-11 | 2016-01-27 | 太原重工股份有限公司 | Ejection limiting device for cargo boom of excavator |
| CN107399678A (en) * | 2016-05-21 | 2017-11-28 | 中船绿洲镇江船舶辅机有限公司 | Crane avoids chimney device |
| CN108358078A (en) * | 2018-01-19 | 2018-08-03 | 中联重科股份有限公司 | Boom system, luffing range of cantilever support control system and its control method |
| CN109322338A (en) * | 2018-10-30 | 2019-02-12 | 太原重工股份有限公司 | Excavator and its pushing force control method |
| CN109322338B (en) * | 2018-10-30 | 2021-07-16 | 太原重工股份有限公司 | Excavator and pushing pressure control method thereof |
| CN112238022A (en) * | 2019-07-18 | 2021-01-19 | 河南森源重工有限公司 | Sprayer and spraying vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103171984B (en) | 2014-12-24 |
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