CN2821520Y - Telescopic suspension arm length detector - Google Patents
Telescopic suspension arm length detector Download PDFInfo
- Publication number
- CN2821520Y CN2821520Y CN 200520051823 CN200520051823U CN2821520Y CN 2821520 Y CN2821520 Y CN 2821520Y CN 200520051823 CN200520051823 CN 200520051823 CN 200520051823 U CN200520051823 U CN 200520051823U CN 2821520 Y CN2821520 Y CN 2821520Y
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- CN
- China
- Prior art keywords
- detection device
- length detection
- potentiometer
- length detector
- reductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a length detector of a telescopic suspension arm, which comprises a pull wire box and a length detector, wherein a potentiometer (13) of the length detector is arranged on a big cover (8) of the pull wire box and is connected with a coil spring box (5) of the pull wire box via a speed reducer (10) in the driving way. The utility model has the advantages of simple structure, small size, convenient installation, low cost and high detection precision.
Description
Technical field
The utility model relates to a kind of length detection device, particularly relates to a kind of length detection device that is used to detect the collapsing length of crane telescoping boom.
Background technology
Crane is the engineering machinery that is widely used in place handling goods such as building ground, goods yard harbour, material depot, in order to guarantee the security of its use, a kind of limiter of moment and suspension hook hoisting limiter has been installed on crane.
Limiter of moment mainly is the hoisting moment (that is: the product of hoisting weight and arm extension elongation) of restriction crane, the damage with structural member of tumbling of the overload when preventing the crane lift heavy.The suspension hook hoisting limiter then is to prevent that crampon pulleying and the collision of arm head from causing the accident.
Being used to transmit arm head pulleying signal at present gives the terminal box part of suspension hook hoisting limiter and is used to detect the length detection device part that transmission hoisting arm expansion length signals is given limiter of moment, these two groups of parts are installed in positions different on the crane telescoping boom respectively, this detector arrangement complexity, volume is bigger, trouble is installed, the production cost height, and accuracy of detection is low.
The utility model content
Technical problem to be solved in the utility model provide a kind of simple in structure, volume is less, easy for installation, production cost is low and accuracy of detection is high telescoping boom length detection device.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: comprise terminal box and length detection device, the potentiometer of described length detection device is installed on the described terminal box and the coil spring box by reductor and described terminal box is in transmission connection.
Described potentiometer is in transmission connection by the output terminal of connection gear and described reductor, described reductor is in transmission connection by the coil spring box of gear shaft and described terminal box, and the little case that covers described potentiometer and described reductor is installed on the big case of described terminal box.
Adopt the telescoping boom length detection device of technique scheme, concentrate in together, make two groups of parts become as a whole transmitting the terminal box partial function of arm head pulleying signal and the length detection device partial function of detection hoisting arm expansion length.The utlity model has two kinds of functions, a kind of function is the collapsing length that is used to detect the crane telescoping boom, and its detection signal is transported to limiter of moment and the supporting use of limiter of moment by cable; Another kind of function is to carry the pulleying signal of arm head, with the supporting use of suspension hook lifting altitude limiter.This compact conformation, volume is little, and is easy for installation, and cost is low and accuracy of detection is high.It is requisite vitals on the crane.
In sum, the utility model be a kind of simple in structure, volume is less, easy for installation, production cost is low and accuracy of detection is high telescoping boom length detection device.
Description of drawings
Accompanying drawing is the utility model structural representation.
Embodiment
Below in conjunction with embodiment the utility model is described in further detail.
Referring to accompanying drawing, base plate 1 is installed on the telescoping boom, on base plate 1, be provided with bolster 4, bolster 4 is provided with coil spring box 5 and wind spring 6 thereof, be wound with backguy 7 on the coil spring box 5, conducting ring 3 is installed on base plate 1, backguy 7 is connected with conducting ring 3 contacts by electroconductive elastic sheet 2, big case 8 is installed on the base plate 1, on big case 8 reductor 10 is installed, the input end of reductor 10 is in transmission connection by gear shaft 9 and coil spring box 5, and the potentiometer 13 of length detection device is installed on big case 8, potentiometer 13 is in transmission connection by the output terminal of connection gear 11 with reductor 10, on the big case 8 the little case 12 that covers potentiometer 13 and reductor 10 is installed.
Referring to accompanying drawing, backguy 7 is wrapped on the cylindrical of coil spring box 5, and backguy 7 input ends and telescoping boom head are fixed, and output terminal and coil spring box 5 are fixing.When telescoping boom stretches out, drive backguy 7 and stretch out, and drive coil spring box 5 around bolster 4 rotations.The other end of backguy 7 is connected with electroconductive elastic sheet 2, and by electroconductive elastic sheet 2, conducting ring 3 also passes to the suspension hook hoisting limiter by terminal box output line 15 with current signal.When telescoping boom was withdrawn, because the effect of wind spring 6, coil spring box 5 is return (opposite direction is rotated when stretching out with arm) voluntarily.Arm stretches out and all played the effect of transmitting signal by backguy when withdrawing to reach.
When hoisting arm expansion drives coil spring box 5 rotations, be installed in the also rotation simultaneously of gear shaft 9 on the coil spring box 5, gear shaft 9 drives potentiometer 13 rotations by reductor 10 connection gear 11, the magnitude of voltage of potentiometer 13 rotation change is input to the moment stop by output line 14 and converts thereof into the hoisting arm expansion length value, thereby has played the function of hoisting arm expansion length detection.
This kind telescoping boom length detection device can also carry out combining and configuring as required.If do not need to detect hoisting arm expansion length, then reductor 10, connection gear 11, potentiometer 13 dismountings can not adorned, make this device just become single terminal box, only play the effect of transmitting the arm head signal.
Claims (3)
1, a kind of telescoping boom length detection device, comprise terminal box and length detection device, it is characterized in that: the big case (8) that the potentiometer of described length detection device (13) is installed in described terminal box upward and by the coil spring box (5) of reductor (10) with described terminal box is in transmission connection.
2, a kind of telescoping boom length detection device according to claim 1, it is characterized in that: described potentiometer (13) is in transmission connection by the output terminal of connection gear (11) with described reductor (10), and described reductor (10) is in transmission connection by the coil spring box (5) of gear shaft (9) with described terminal box.
3, a kind of telescoping boom length detection device according to claim 1 and 2 is characterized in that: the little case (12) that covers described potentiometer (13) and described reductor (10) is installed on the big case (8) of described terminal box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520051823 CN2821520Y (en) | 2005-09-02 | 2005-09-02 | Telescopic suspension arm length detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520051823 CN2821520Y (en) | 2005-09-02 | 2005-09-02 | Telescopic suspension arm length detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2821520Y true CN2821520Y (en) | 2006-09-27 |
Family
ID=37018074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520051823 Expired - Fee Related CN2821520Y (en) | 2005-09-02 | 2005-09-02 | Telescopic suspension arm length detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2821520Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564286A (en) * | 2010-12-31 | 2012-07-11 | 上海派芬自动控制技术有限公司 | Measurement device |
| CN103322958A (en) * | 2013-05-29 | 2013-09-25 | 三一汽车制造有限公司 | Length sensor and detecting method thereof |
| CN108519072A (en) * | 2018-05-11 | 2018-09-11 | 中国科学院武汉岩土力学研究所 | Rock deformation measuring device and rock measuring apparatus |
-
2005
- 2005-09-02 CN CN 200520051823 patent/CN2821520Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564286A (en) * | 2010-12-31 | 2012-07-11 | 上海派芬自动控制技术有限公司 | Measurement device |
| CN103322958A (en) * | 2013-05-29 | 2013-09-25 | 三一汽车制造有限公司 | Length sensor and detecting method thereof |
| CN103322958B (en) * | 2013-05-29 | 2016-08-10 | 三一汽车制造有限公司 | A kind of linear transducer and the detection method of linear transducer |
| CN108519072A (en) * | 2018-05-11 | 2018-09-11 | 中国科学院武汉岩土力学研究所 | Rock deformation measuring device and rock measuring apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 Termination date: 20130902 |