CN102840848A - Detection device for revolving angle of rotary table and aerial operation platform equipment - Google Patents
Detection device for revolving angle of rotary table and aerial operation platform equipment Download PDFInfo
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- CN102840848A CN102840848A CN2012103247558A CN201210324755A CN102840848A CN 102840848 A CN102840848 A CN 102840848A CN 2012103247558 A CN2012103247558 A CN 2012103247558A CN 201210324755 A CN201210324755 A CN 201210324755A CN 102840848 A CN102840848 A CN 102840848A
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Abstract
The invention relates to a detection device for a revolving angle of a rotary table and aerial operation platform equipment. The detection device for the revolving angle of the rotary table comprises an angle sensor, a first detection gear and a second detection gear, wherein the first detection gear is fixedly arranged on a central revolving body; a detection revolving shaft is fixedly arranged in the center of the first detection gear; axes of the first detection gear and the detection revolving shaft are overlapped with the axis of the central revolving body; the second detection gear is engaged with the first detection gear; a central shaft of the angle sensor is fixedly arranged in the center of the second detection gear; and shells of the detection revolving shaft and the angle sensor are arranged on the rotary table through a retaining plate. According to the structure provided by the invention, the angle sensor and the second detection gear can rotate around the detection revolving shaft with the same distance all the time, but the engagement clearance between the detection gears is also kept unchanged all the time without producing engagement stress; and thus, the problems of discontinuity and instability of an angle detection signal are avoided.
Description
Technical field
The present invention relates to engineering machinery field, relate in particular to a kind of turntable angle of revolution pick-up unit and aerial work platform equipment.
Background technology
Existing huge aerial working platform vehicle (referring to Fig. 1) can be realized the work high above the ground of nearly hundred meters operation height, and the weight of its jib is very big, and accounts for the car load larger proportion.Therefore need the turntable rotation detecting to detect the rotating angle of turntable in real time, be used for controlling the jib action of car load and carrying out safety guarantee, this detection all has very important meaning to action continuity, stability and the reliability of car load.
As shown in Figure 2, for existing turntable rotation detecting is installed in the structural representation on the aerial working platform vehicle.Wherein detection of gear 6a is through being bolted on the center steering body 8a; The center fixation of detection of gear 3a the central shaft of angle sensor 5a; Detection of gear 6a and detection of gear 3a engagement; The shell of angular transducer 5a is fixed on the sensor installing plate 2a, and sensor installing plate 2a is fixed on the turntable 7a through fixed head 1a.Detection of gear 3a integral body can be rotated with respect to center steering body 8a along with turntable 7a together; Simultaneously when turntable 7a turns round; Detection of gear 6a is because detection of gear 3a and its meshing relation; Also can rotate, make the central shaft of angular transducer 5a change, can measure the angle that turntable rotates thus with respect to shell generation angle with respect to the axis of self.
This pick-up unit requires the assembling right alignment of center steering body and turntable higher, also is difficult to realize that this just possibly cause two detection of gear not mesh sometimes, and it is excessive also might to mesh stress, and then influences the measuring accuracy of angular transducer.In addition, fixed head in the pick-up unit and turntable through bolt together, when the jib that is connected with turntable is stretched with full exhibition entirely; Because jib is long and higher; Whole jib can produce lateral bending distortion and forward flexural deformation, thereby causes the distortion of turntable integral inclination, and turntable is when deforming; Bigger stress acts on the central shaft of angular transducer through detection of gear, and then damages angular transducer.
Therefore; Existing turntable rotation detecting receives the influence of turntable and center steering body installation accuracy and turntable distortion easily; The discontinuous, unstable of signal may appear; Sometimes the situation of also can the angle of arrival sensor being damaged by bigger distortional stress causes to be difficult to obtain stable and accurate turntable revolution testing result.
Summary of the invention
The objective of the invention is to propose a kind of turntable angle of revolution pick-up unit and aerial work platform equipment, can realize the detection of stable and accurate turntable angle of revolution.
For realizing above-mentioned purpose; The invention provides a kind of turntable angle of revolution pick-up unit; Be used to measure the rotational angle of turntable, comprise angular transducer, wherein also comprise first detection of gear and second detection of gear with respect to the center steering body; Said first detection of gear is fixed on the said center steering body; The center fixation of said first detection of gear has the detection revolving shaft, and said first detection of gear and the axis that detects revolving shaft all with the dead in line of said center steering body, said second detection of gear and said first detection of gear mesh; And the central shaft of said angular transducer is fixed on the center of said second detection of gear, and the shell of said detection revolving shaft and said angular transducer is installed on the said turntable through a fixed head.
Further; Said first detection of gear is prolonged the axis bearing of trend and is comprised fixed part, support portion and engaging piece; Said fixed part is bolted on the said center steering body through a plurality of; Said engaging piece and the engagement of said second detection of gear, said support zone is between said fixed part and engaging piece, and the center of said fixed part, support portion and engaging piece is provided with the axis hole that supplies said detection revolving shaft to pass; The bottom of said detection revolving shaft is provided with the step of radius greater than said axis hole, and said step is bolted on the said fixed part through a plurality of.
Further, on said detection revolving shaft, also be provided with axle sleeve, said axle sleeve is arranged between said first detection of gear and the said fixed head.
Further, the top of said detection revolving shaft also is equipped with lubricator cup, realizes lubricating between said detection revolving shaft and the said fixed head.
Further; An end that is installed in said turntable of said fixed head has slotted hole; On said turntable, also be fixed with the bearing pin of stirring that is located in the said slotted hole, saidly stir the footpath that bearing pin can prolong said center steering body and upwards in said slotted hole, slide.
Further, said first detection of gear is through on a plurality of brushes that are bolted to said center steering body.
Further, said second detection of gear is connected through the elasticity pivot pin with the central shaft of said angular transducer.
For realizing above-mentioned purpose, the invention provides a kind of aerial work platform equipment, comprise center steering body and the turntable that rotates with respect to said center steering body, wherein, also comprise aforesaid turntable angle of revolution pick-up unit.
Based on technique scheme; The embodiment of the invention is equipped with the detection revolving shaft with its dead in line on first detection of gear; This detection revolving shaft is installed on the turntable together with the angular transducer plate that together is fixed; This structure can make angular transducer rotate around detecting revolving shaft with identical distance all the time with second detection of gear; And the back lash between first detection of gear and second detection of gear also just remains unchanged always, and does not produce engagement stress, so just can discontinuous and problem of unstable not occur by the angle of arrival detection signal; In another embodiment; Fixed head has slotted hole at turntable one end, stirs bearing pin and be equipped with in the slotted hole, can upwards in slotted hole, slide along the footpath of center steering body; Like this when jib and turntable inclination and distortion; Turntable can spur to be stirred bearing pin and slides with respect to fixed head, but the angular transducer that can directly not drive fixed head and connected, thereby the damage of having avoided stress angle sensor to cause.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing huge aerial working platform vehicle.
Fig. 2 is installed in the structural representation on the aerial working platform vehicle for existing turntable rotation detecting.
Fig. 3 is the structural representation of an embodiment of turntable of the present invention angle of revolution pick-up unit.
Fig. 4 is the synoptic diagram of the depression angle of Fig. 3 embodiment.
Embodiment
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
As shown in Figure 3, be the structural representation of an embodiment of turntable of the present invention angle of revolution pick-up unit.Synoptic diagram with reference to figure 3 and depression angle shown in Figure 4; Can see that being used in the present embodiment measure turntable and comprise angular transducer 7, first detection of gear 1 and second detection of gear 10 with respect to the turntable angle of revolution pick-up unit of the rotational angle of center steering body; Wherein, First detection of gear 1 is fixed on the center steering body 11, and the center fixation of first detection of gear 1 has the revolving shaft 2 of detection.First detection of gear 1 and the axis that detects revolving shaft 2 all with the dead in line of center steering body 11.
Second detection of gear 10 and 1 engagement of first detection of gear; The central shaft of angular transducer 7 is fixed on the center of second detection of gear 10; The axis of this central shaft also with the dead in line of second detection of gear, second detection of gear 10 can be connected through the elasticity pivot pin with the central shaft of angular transducer 7.The shell that detects revolving shaft 2 and angular transducer 7 is installed on the turntable 9 through a fixed head 8.One protective cover 6 can also be set on the shell of angular transducer 7, and angle sensor 7 is protected.
Existing turntable rotation detecting in Fig. 2; The end that can see angular transducer 7 is installed on the turntable 12; The other end then is connected to and detects on the revolving shaft 2; This just makes when turntable 12 rotates with respect to center steering body 11; Angular transducer 7 and connected second detection of gear 10 all the time with identical distance (this distance be the axis that detects revolving shaft with the axis of second detection of gear between vertical range) around detecting revolving shaft 2 rotations; The back lash of the win detection of gear and second detection of gear is remained unchanged, thereby do not form engagement stress, also just can not cause the discontinuous and unsettled phenomenon of angle detection signal.
For the installation and measuring revolving shaft; First detection of gear 1 is not the gear of general structure; Comprise fixed part A, support portion B and three parts of engaging piece C but prolong the axis bearing of trend, wherein fixed part A is bolted on the center steering body 11 through a plurality of, specifically can be fixed on the brush of center steering body 11; Engaging piece C and 10 engagements of second detection of gear, support portion B is between fixed part A and engaging piece C.The center of fixed part A, support portion B and engaging piece C is provided with and supplies to detect the axis hole that revolving shaft 2 passes, and the bottom of detecting revolving shaft 2 is provided with the step D of radius greater than axis hole, and step D is bolted on the fixed part A through a plurality of.The compact conformation of this detection of gear, weight are also lighter.
In Fig. 3 embodiment, can also detect the axle sleeve 3 that is provided for protecting detection revolving shaft 2 on the revolving shaft 2, this axle sleeve 3 is arranged between first detection of gear 1 and the fixed head 8.Fixed head 8 is fixed on first detection of gear 1 through set bolt 4 and packing ring etc.
The hard grind wiping does not take place in the position in order to ensure fixed head 8 and connecting bushing 3, can also lubricator cup 5 be installed on the top of detecting revolving shaft 2, realizes lubricating between detection revolving shaft 2 and the fixed head 8.
Referring to Fig. 4, can see that an end that is installed in turntable 12 of fixed head 8 has slotted hole 13, on turntable 12, also be fixed with one and be located in and stir bearing pin 9 in the slotted hole 13, this stirs the upwards slip slotted hole 13 in of footpath that bearing pin 9 can Yanzhong heart solid of revolution 11.So just make and have level of freedom between turntable and the turntable angle of revolution pick-up unit; When jib and turntable run-off the straight distortion; Turntable can spur to be stirred bearing pin and slides with respect to fixed head; But the angular transducer that can directly not drive fixed head and connected, thereby the damage of having avoided stress angle sensor to cause.
Illustrated each turntable of the present invention angle of revolution pick-up unit embodiment from the front, these turntable angle of revolution pick-up units all can realize the detection of stable and accurate turntable angle of revolution.Accordingly; Turntable of the present invention angle of revolution pick-up unit embodiment can be widely used in the various engineering machinery that need the control of turntable angle of revolution; Especially be fit to be applied in the aerial work platform equipment; This aerial work platform equipment comprises center steering body and the turntable that rotates with respect to the center steering body, can realize the detection of stable and accurate turntable angle of revolution through aforesaid turntable angle of revolution pick-up unit is installed.
Should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not to its restriction; Although with reference to preferred embodiment the present invention has been carried out detailed explanation, the those of ordinary skill in affiliated field is to be understood that: still can specific embodiments of the invention make amendment or the part technical characterictic is equal to replacement; And not breaking away from the spirit of technical scheme of the present invention, it all should be encompassed in the middle of the technical scheme scope that the present invention asks for protection.
Claims (8)
1. turntable angle of revolution pick-up unit; Be used to measure the rotational angle of turntable with respect to the center steering body; Comprise angular transducer, it is characterized in that, also comprise first detection of gear and second detection of gear; Said first detection of gear is fixed on the said center steering body; The center fixation of said first detection of gear has the detection revolving shaft, and said first detection of gear and the axis that detects revolving shaft all with the dead in line of said center steering body, said second detection of gear and said first detection of gear mesh; And the central shaft of said angular transducer is fixed on the center of said second detection of gear, and the shell of said detection revolving shaft and said angular transducer is installed on the said turntable through a fixed head.
2. turntable according to claim 1 angle of revolution pick-up unit; It is characterized in that; Said first detection of gear is prolonged the axis bearing of trend and is comprised fixed part, support portion and engaging piece, and said fixed part is bolted on the said center steering body through a plurality of, said engaging piece and the engagement of said second detection of gear; Said support zone is between said fixed part and engaging piece; The center of said fixed part, support portion and engaging piece is provided with the axis hole that supplies said detection revolving shaft to pass, and the bottom of said detection revolving shaft is provided with the step of radius greater than said axis hole, and said step is bolted on the said fixed part through a plurality of.
3. turntable according to claim 2 angle of revolution pick-up unit is characterized in that, on said detection revolving shaft, also is provided with axle sleeve, and said axle sleeve is arranged between said first detection of gear and the said fixed head.
4. turntable according to claim 2 angle of revolution pick-up unit is characterized in that the top of said detection revolving shaft also is equipped with lubricator cup, realizes lubricating between said detection revolving shaft and the said fixed head.
5. turntable according to claim 1 angle of revolution pick-up unit; It is characterized in that; An end that is installed in said turntable of said fixed head has slotted hole; On said turntable, also be fixed with the bearing pin of stirring that is located in the said slotted hole, saidly stir the footpath that bearing pin can prolong said center steering body and upwards in said slotted hole, slide.
6. turntable according to claim 1 angle of revolution pick-up unit is characterized in that, said first detection of gear is through on a plurality of brushes that are bolted to said center steering body.
7. turntable according to claim 1 angle of revolution pick-up unit is characterized in that, said second detection of gear is connected through the elasticity pivot pin with the central shaft of said angular transducer.
8. an aerial work platform equipment comprises center steering body and the turntable that rotates with respect to said center steering body, it is characterized in that, also comprises the arbitrary described turntable of claim 1 ~ 7 angle of revolution pick-up unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210324755.8A CN102840848B (en) | 2012-09-05 | 2012-09-05 | Detection device for revolving angle of rotary table and aerial operation platform equipment |
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| CN201210324755.8A CN102840848B (en) | 2012-09-05 | 2012-09-05 | Detection device for revolving angle of rotary table and aerial operation platform equipment |
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| CN102840848A true CN102840848A (en) | 2012-12-26 |
| CN102840848B CN102840848B (en) | 2015-01-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103496636A (en) * | 2013-10-22 | 2014-01-08 | 徐州重型机械有限公司 | Operation area limiting method, operation area limiting device and fire fighting truck |
| CN104555738A (en) * | 2015-01-19 | 2015-04-29 | 浙江三一装备有限公司 | Crane and rotation angle measuring device thereof |
| CN112880709A (en) * | 2021-01-14 | 2021-06-01 | 清华大学 | Unmanned excavator rotating platform angle measurement system |
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| JPS58113707A (en) * | 1981-12-27 | 1983-07-06 | Mitsubishi Heavy Ind Ltd | Position detector of contact type |
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2012
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| JPS58113707A (en) * | 1981-12-27 | 1983-07-06 | Mitsubishi Heavy Ind Ltd | Position detector of contact type |
| JP2005049234A (en) * | 2003-07-29 | 2005-02-24 | Yazaki Corp | Rudder angle sensor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496636A (en) * | 2013-10-22 | 2014-01-08 | 徐州重型机械有限公司 | Operation area limiting method, operation area limiting device and fire fighting truck |
| CN104555738A (en) * | 2015-01-19 | 2015-04-29 | 浙江三一装备有限公司 | Crane and rotation angle measuring device thereof |
| CN112880709A (en) * | 2021-01-14 | 2021-06-01 | 清华大学 | Unmanned excavator rotating platform angle measurement system |
| CN112880709B (en) * | 2021-01-14 | 2022-05-06 | 清华大学 | Unmanned excavator rotating platform angle measurement system |
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| Publication number | Publication date |
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| CN102840848B (en) | 2015-01-21 |
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Effective date of registration: 20170216 Address after: 221004 Jiangsu Province, Xuzhou City Yunlong District No. 165 Patentee after: Xugong fire safety equipment Co. Ltd. Address before: 221004 Xuzhou, Zhejiang Province, Jiangsu Road No. 165 Patentee before: Xuzhou Heavy Machinery Co., Ltd. |