CN102840848B - 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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- CN102840848B CN102840848B CN201210324755.8A CN201210324755A CN102840848B CN 102840848 B CN102840848 B CN 102840848B CN 201210324755 A CN201210324755 A CN 201210324755A CN 102840848 B CN102840848 B CN 102840848B
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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, particularly relate to a kind of rotation of rotary table angle detection device and aerial work platform equipment.
Background technology
Existing huge aerial working platform vehicle (see Fig. 1) can realize the work high above the ground of the operation height of nearly hundred meters, and the weight of its jib is very large, and accounts for car load larger proportion.Therefore need rotation of rotary table pick-up unit to detect the angle of rotation of rotary table in real time, be used for controlling the jib action of car load and carry out safety guarantee, this detection has very important meaning to the action continuity of car load, stability and reliability.
As shown in Figure 2, the structural representation on aerial working platform vehicle is arranged on for existing rotation of rotary table pick-up unit.Wherein detection of gear 6a is bolted on center steering body 8a, the center of detection of gear 3a is fixed wtih the central shaft of angular transducer 5a, detection of gear 6a engages with detection of gear 3a, the shell of angular transducer 5a is fixed on sensor installing plate 2a, and sensor installing plate 2a is fixed on turntable 7a by fixed head 1a.Detection of gear 3a is overall can rotate relative to center steering body 8a together along with turntable 7a, simultaneously when turntable 7a turns round, detection of gear 6a is due to detection of gear 3a and its meshing relation, also can rotate relative to the axis of self, make the central shaft of angular transducer 5a relative to the change of shell generation angle, the angle that turntable rotates can be measured thus.
This pick-up unit requires that the assembling right alignment of center steering body and turntable is higher, and be also difficult to realize, this just may cause two detection of gear not engage sometimes, also likely engages stress excessive, and then affects the measuring accuracy of angular transducer.In addition, together with fixed head in pick-up unit is bolted on turntable, when the jib be connected with turntable is stretched entirely with full exhibition, because jib is longer and higher, whole jib can produce lateral bending distortion and forward flexural deformation, thus causes the integral inclined distortion of turntable, and turntable is when deforming, larger stress is acted on the central shaft of angular transducer by detection of gear, and then damages angular transducer.
Therefore, existing rotation of rotary table pick-up unit is easily subject to the impact of turntable and center steering body installation accuracy and turntable distortion, the discontinuous, unstable of signal may be there is, sometimes also there will be the situation that angular transducer is damaged by larger distortional stress, cause and be difficult to obtain stable and accurate rotation of rotary table testing result.
Summary of the invention
The object of the invention is to propose a kind of rotation of rotary table angle detection device and aerial work platform equipment, the detection of stable and accurate rotation of rotary table angle can be realized.
For achieving the above object, the invention provides a kind of rotation of rotary table angle detection device, for the rotational angle of measuring circurmarotate relative to center steering body, comprise angular transducer, wherein also comprise the first detection of gear and the second detection of gear, described first detection of gear is fixed on described center steering body, the center of described first detection of gear is fixed with detection revolving shaft, and described first detection of gear and detect revolving shaft axis all with the dead in line of described center steering body, described second detection of gear engages with described first detection of gear, and the central shaft of described angular transducer is fixed on the center of described second detection of gear, the shell of described detection revolving shaft and described angular transducer is arranged on described turntable by a fixed head.
Further, described first detection of gear is prolonged Axis Extension direction and is comprised fixed part, support portion and engaging piece, described fixed part is bolted on described center steering body by multiple, described engaging piece engages with described second detection of gear, described support zone is between described fixed part and engaging piece, the center of described fixed part, support portion and engaging piece is provided with the axis hole passed for described detection revolving shaft, the bottom of described detection revolving shaft is provided with the step that radius is greater than described axis hole, and described step is bolted on described fixed part by multiple.
Further, described detection revolving shaft is also provided with axle sleeve, described axle sleeve is arranged between described first detection of gear and described fixed head.
Further, the top of described detection revolving shaft is also provided with lubricator cup, realizes the lubrication between described detection revolving shaft and described fixed head.
Further, one end being arranged on described turntable of described fixed head has slotted hole, described turntable is also fixed with one be located in and stir bearing pin in described slotted hole, described in stir in radial direction that bearing pin can prolong described center steering body and slide in described slotted hole.
Further, described first detection of gear is by multiple brush being bolted to described center steering body.
Further, described second detection of gear is connected by elasticity pivot pin with the central shaft of described angular transducer.
For achieving the above object, the invention provides a kind of aerial work platform equipment, the turntable comprising center steering body and rotate relative to described center steering body, wherein, also comprises aforesaid rotation of rotary table angle detection device.
Based on technique scheme, the embodiment of the present invention is provided with the detection revolving shaft with its dead in line in the first detection of gear, this detection revolving shaft is arranged on turntable together with the angular transducer plate that is together fixed, this structure can make angular transducer and the second detection of gear rotate around detection revolving shaft with identical distance all the time, and the back lash between the first detection of gear and the second detection of gear also just remains unchanged always, and do not produce engagement stress, discontinuous and unstable problem would not be there is by angle of arrival detection signal like this; In another embodiment, fixed head has slotted hole in turntable one end, and be equipped with in slotted hole and stir bearing pin, can slide in slotted hole in the radial direction of center steering body, like this when jib and turntable inclination and distortion, turntable can pull to be stirred bearing pin and slides relative to fixed head, but the angular transducer that will directly drive fixed head to connect, thus avoids the damage that stress causes angular transducer.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing huge aerial working platform vehicle.
Fig. 2 is the structural representation that existing rotation of rotary table pick-up unit is arranged on aerial working platform vehicle.
Fig. 3 is the structural representation of an embodiment of rotation of rotary table angle detection device of the present invention.
Fig. 4 is the schematic diagram of the depression angle of Fig. 3 embodiment.
Embodiment
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
As shown in Figure 3, be the structural representation of an embodiment of rotation of rotary table angle detection device of the present invention.With reference to the schematic diagram of the depression angle shown in figure 3 and Fig. 4, can see and comprise angular transducer 7, first detection of gear 1 and the second detection of gear 10 for measuring circurmarotate relative to the rotation of rotary table angle detection device of the rotational angle of center steering body in the present embodiment, wherein, first detection of gear 1 is fixed on center steering body 11, and the center of the first detection of gear 1 is fixed with detects revolving shaft 2.First detection of gear 1 and detect revolving shaft 2 axis all with the dead in line of center steering body 11.
Second detection of gear 10 engages with the first detection of gear 1, the central shaft of angular transducer 7 is fixed on the center of the second detection of gear 10, the axis of this central shaft also with the dead in line of the second detection of gear, the second detection of gear 10 is connected by elasticity pivot pin with the central shaft of angular transducer 7.The shell detecting revolving shaft 2 and angular transducer 7 is arranged on turntable 9 by a fixed head 8.The shell of angular transducer 7 can also arrange a protective cover 6, angular transducer 7 is protected.
Compared to the existing rotation of rotary table pick-up unit in Fig. 2, can see that one end of angular transducer 7 is arranged on turntable 12, the other end is then connected to and detects on revolving shaft 2, when this just makes turntable 12 rotate relative to center steering body 11, angular transducer 7 and connected second detection of gear 10 are rotated around detecting revolving shaft 2 with identical distance (this distance detects the vertical range between the axis of revolving shaft and the axis of the second detection of gear) all the time, the back lash of the first detection of gear and the second detection of gear is remained unchanged, thus do not form engagement stress, also the discontinuous and unstable phenomenon of angle detection signal would not be caused.
In order to install detection revolving shaft, first detection of gear 1 is not the gear of general structure, but prolong Axis Extension direction and comprise fixed part A, support portion B and engaging piece C tri-parts, wherein fixed part A is bolted on center steering body 11 by multiple, specifically can be fixed on the brush of center steering body 11, engaging piece C engages with the second detection of gear 10, and 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 the axis hole for detecting revolving shaft 2 and passing, and the bottom detecting revolving shaft 2 is provided with the step D that radius is greater than axis hole, and step D is bolted on fixed part A by multiple.The compact conformation of this detection of gear, weight is also lighter.
In Fig. 3 embodiment, can also arrange the axle sleeve 3 for the protection of detecting revolving shaft 2 on detection revolving shaft 2, this axle sleeve 3 is arranged between the first detection of gear 1 and fixed head 8.Fixed head 8 is fixed on the first detection of gear 1 by set bolt 4 and packing ring etc.
There is not hard grind in order to ensure fixed head 8 with the position of connecting bushing 3 to wipe, on the top detecting revolving shaft 2, lubricator cup 5 can also be installed, realize detecting the lubrication between revolving shaft 2 and fixed head 8.
See Fig. 4, can see that one end being arranged on turntable 12 of fixed head 8 has slotted hole 13, turntable 12 is also fixed with one and is located in and stirs bearing pin 9 in slotted hole 13, this is stirred bearing pin 9 and can the radial direction of Yanzhong heart solid of revolution 11 be slided in slotted hole 13.So just make, between turntable and rotation of rotary table angle detection device, there is certain degree of freedom, when jib and turntable run-off the straight distortion, turntable can pull to be stirred bearing pin and slides relative to fixed head, but the angular transducer that will directly drive fixed head to connect, thus the damage avoiding that stress causes angular transducer.
From each illustrated above rotation of rotary table angle detection device embodiment of the present invention, these rotation of rotary table angle detection devices all can realize the detection of stable and accurate rotation of rotary table angle.Accordingly, rotation of rotary table angle detection device embodiment of the present invention can be widely used in the various engineering machinery needing rotation of rotary table Angle ambiguity, especially be applicable to being applied in aerial work platform equipment, the turntable that this aerial work platform equipment comprises center steering body and rotates relative to center steering body, can realize the detection of stable and accurate rotation of rotary table angle by installing aforesaid rotation of rotary table angle detection device.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (7)
1. a rotation of rotary table angle detection device, for the rotational angle of measuring circurmarotate relative to center steering body, comprise angular transducer, it is characterized in that, also comprise the first detection of gear and the second detection of gear, described first detection of gear is fixed on described center steering body, the center of described first detection of gear is fixed with detection revolving shaft, and described first detection of gear and detect revolving shaft axis all with the dead in line of described center steering body, described second detection of gear engages with described first detection of gear, and the central shaft of described angular transducer is fixed on the center of described second detection of gear, the shell of described detection revolving shaft and described angular transducer is arranged on described turntable by a fixed head, one end being arranged on described turntable of described fixed head has slotted hole, described turntable is also fixed with one be located in and stir bearing pin in described slotted hole, described bearing pin of stirring can slide in described slotted hole along in the radial direction of described center steering body.
2. rotation of rotary table angle detection device according to claim 1, it is characterized in that, described first detection of gear is prolonged Axis Extension direction and is comprised fixed part, support portion and engaging piece, described fixed part is bolted on described center steering body by multiple, described engaging piece engages with described second detection of gear, described support zone is between described fixed part and engaging piece, described fixed part, the center of support portion and engaging piece is provided with the axis hole passed for described detection revolving shaft, the bottom of described detection revolving shaft is provided with the step that radius is greater than described axis hole, described step is bolted on described fixed part by multiple.
3. rotation of rotary table angle detection device according to claim 2, is characterized in that, described detection revolving shaft is also provided with axle sleeve, and described axle sleeve is arranged between described first detection of gear and described fixed head.
4. rotation of rotary table angle detection device according to claim 2, is characterized in that, the top of described detection revolving shaft is also provided with lubricator cup, realizes the lubrication between described detection revolving shaft and described fixed head.
5. rotation of rotary table angle detection device according to claim 1, is characterized in that, described first detection of gear is by multiple brush being bolted to described center steering body.
6. rotation of rotary table angle detection device according to claim 1, is characterized in that, described second detection of gear is connected by elasticity pivot pin with the central shaft of described angular transducer.
7. an aerial work platform equipment, the turntable comprising center steering body and rotate relative to described center steering body, is characterized in that, also comprises the arbitrary described rotation of rotary table angle detection device of claim 1 ~ 6.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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 CN102840848A (en) | 2012-12-26 |
| CN102840848B true CN102840848B (en) | 2015-01-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103496636B (en) * | 2013-10-22 | 2015-05-13 | 徐州重型机械有限公司 | Operation area limiting method, operation area limiting device and fire fighting truck |
| CN104555738B (en) * | 2015-01-19 | 2017-11-10 | 浙江三一装备有限公司 | Crane and its angle of revolution measurement apparatus |
| CN112880709B (en) * | 2021-01-14 | 2022-05-06 | 清华大学 | Unmanned excavator rotating platform angle measurement system |
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| CN202814383U (en) * | 2012-09-05 | 2013-03-20 | 徐州重型机械有限公司 | Rotary table rotation angle detection device and aerial work platform equipment |
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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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| CN201476780U (en) * | 2009-07-24 | 2010-05-19 | 秦山核电有限公司 | Reactor core barrel flange surface hole distance measuring device |
| CN102062591A (en) * | 2009-11-11 | 2011-05-18 | 沈阳理工大学 | Singlechip-based radial composite error measurer |
| CN202267476U (en) * | 2011-10-31 | 2012-06-06 | 徐州重型机械有限公司 | Fire truck and arm support rotation angle detection device thereof |
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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. |