CN204324727U - There is the cable drum and hoisting crane of surveying long function - Google Patents
There is the cable drum and hoisting crane of surveying long function Download PDFInfo
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- CN204324727U CN204324727U CN201420743157.9U CN201420743157U CN204324727U CN 204324727 U CN204324727 U CN 204324727U CN 201420743157 U CN201420743157 U CN 201420743157U CN 204324727 U CN204324727 U CN 204324727U
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- cable
- leading sheave
- measuring staff
- bobbin trunk
- cable drum
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The utility model relates to and a kind ofly has the cable drum and hoisting crane of surveying long function, wherein, there is the cable drum surveying long function and comprise bobbin trunk, magnetic deformation linear displacement transducer and leading sheave, the side of described bobbin trunk is provided with side plate, described magnetic deformation linear displacement transducer comprises electronics storehouse and measuring staff, described electronics storehouse is arranged on described side plate, described measuring staff is positioned at the top of described bobbin trunk, described measuring staff is provided with outside thread, the negative thread matched with described outside thread is provided with in described leading sheave, described leading sheave adopts magnetic material to make, described leading sheave is threaded connection and is arranged on described measuring staff.The utility model, by the thread connecting mode of leading sheave in conjunction with measuring staff, achieves even, the individual layer, closely precise alignment of cable in bobbin trunk; Meanwhile, magnetic deformation linear displacement transducer is absolute value type displacement pickup, the reflection of the result of measurement be the absolute length of cable, more accurate.
Description
Technical field
The utility model relates to engineering machinery field, particularly relates to a kind ofly to have the cable drum and hoisting crane of surveying long function.
Background technology
Cable drum is that usual reel maintains static, and one end of cable is fixed on reel, is connected with the brush of reel inside, and the other end of cable moves with mobile device for mobile device provides electrical source of power, controls the cable winder of power supply or control signal.Similar with metallic tape, cable drum utilizes volute spring for power rolling cable, when cable is drawn out, tightens up volute spring and energy storage, when external force is cancelled, spring release can, reel automatic winding cable.
Hoisting crane semi-girder is in telescopic process, and adopt cable drum as the important device of all kinds of electric signal of transmission, cable drum is one of kernel component of hoisting crane semi-girder electric system.When cable drum is arranged on basic arm outside, the end that the free end of cable is fixed on minor details arm can stretch freely along with semi-girder, there is provided power supply and signal on the one hand the electric elements on minor details arm, on the other hand, the collapsing length when lead arm can be measured in real time.When cable drum is on the telescopic oil cylinder of arm inside, cable drum is fixed on the afterbody of basic arm, and the free end of cable is fixed on the cylinder barrel of telescopic oil cylinder, together moves with telescoping cylinder.There is provided power supply and control signal to the electromagnetic valve on cylinder barrel and sensor, the collapsing length of telescoping cylinder can be measured simultaneously in real time.The controller of hoisting crane carries out the Logic judgment, the calculating of lift heavy performance etc. that stretch by above linear measure signal, as can be seen here, the accuracy of cable length signal measurement is most important to hoisting crane.
Existing cable drum carries out the measurement of cable length usually with potentiometer.When the barrel body rotation of cable drum, drive potentiometric contact to slide on resistive film, contacting points position is changed, thus change the ratio of the upper and lower resistance of resistive film, realize output end voltage to change with external position, and then calculate the length that cable stretches out (or retraction).
There is following shortcoming in above-mentioned existing potentiometer-type linear measure scheme:
1) resistance type sensor, survey precision is not good;
2) when contact point moves and electron membrane produce friction, easily cause wearing and tearing, affect service life;
3) potentiometric output is vulnerable to ambient temperature effect;
4) under vibration, resistance can change.
Utility model content
The purpose of this utility model proposes a kind ofly have the cable drum and hoisting crane of surveying long function, length that cable stretches out and retract that what it can be more accurate measure.
For achieving the above object, the utility model provides a kind ofly has the cable drum surveying long function, it comprises bobbin trunk, magnetic deformation linear displacement transducer and leading sheave, the side of described bobbin trunk is provided with side plate, described magnetic deformation linear displacement transducer comprises electronics storehouse and measuring staff, described electronics storehouse is arranged on described side plate, described measuring staff is positioned at the top of described bobbin trunk, described measuring staff is provided with outside thread, the negative thread matched with described outside thread is provided with in described leading sheave, described leading sheave adopts magnetic material to make, described leading sheave is threaded connection and is arranged on described measuring staff.
One preferably or in embodiment, described leading sheave comprises wheel body and is arranged on the baffle plate of described wheel body both sides.
One preferably or in embodiment, the size relationship of described bobbin trunk and described wheel body is:
D
1×L＝D
2×d
Wherein, D
1for the diameter of described bobbin trunk, D
2for the diameter of described wheel body, L is the externally threaded pitch on described measuring staff, and d is the diameter of cable.
Preferably or in embodiment, described bobbin trunk is provided with spiral cable groove one.
Preferably or in embodiment, there is between described leading sheave and described bobbin trunk the setpoint distance preventing cable stuck one.
For achieving the above object, the utility model additionally provides a kind of hoisting crane, and it comprises and has the cable drum surveying long function in above-mentioned any embodiment.
Based on technique scheme, the utility model at least has following beneficial effect:
The measuring staff of magnetic deformation linear displacement transducer is carried out outside thread process by the utility model, negative thread process is carried out at the position that the inner ring of the leading sheave simultaneously made by magnetic material contacts with measuring staff, leading sheave is in conjunction with the thread connecting mode of measuring staff, avoid leading sheave to rock on measuring staff, achieve even, the individual layer, closely accurate arrangement of cable in bobbin trunk; Meanwhile, magnetic deformation linear displacement transducer is absolute value type displacement pickup, can measure the absolute displacement of leading sheave and datum mark in real time accurately, therefore, the result reflection of measuring be the absolute length of cable, but not the variable quantity of cable length, result of a measurement is accurate.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
The schematic front view with the cable drum surveying long function that Fig. 1 (a) provides for the utility model;
Fig. 1 (b) is the enlarged diagram of the A of regional area Fig. 1 (a) Suo Shi;
The schematic side view with the cable drum surveying long function that Fig. 2 provides for the utility model;
The perspective view of the leading sheave that Fig. 3 (a) provides for the utility model;
The schematic front view of the leading sheave that Fig. 3 (b) provides for the utility model;
The long principle schematic of survey with the cable drum surveying long function that Fig. 4 provides for the utility model.
Attached number in the figure:
1-bobbin trunk; 2-magnetic deformation linear displacement transducer; 3-leading sheave; 4-side plate; 5-measuring staff; 6-cable; 7-cable interface;
31-wheel body; 32-baffle plate.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the utility model protection domain can not be interpreted as.
As Fig. 1 (a), shown in Fig. 1 (b), for the illustrative examples with the cable drum surveying long function that the utility model provides, in this illustrative examples, there is the cable drum surveying long function and comprise bobbin trunk 1, magnetic deformation linear displacement transducer 2 and leading sheave 3, the side of bobbin trunk 1 is provided with side plate 4, magnetic deformation linear displacement transducer 2 comprises electronics storehouse and measuring staff 5, electronics storehouse is arranged on side plate 4, measuring staff 5 is positioned at the top of bobbin trunk 1, measuring staff 5 is provided with outside thread, the negative thread matched with outside thread is provided with in leading sheave 3, leading sheave 3 adopts magnetic material to make, leading sheave 3 is threaded connection and is arranged on measuring staff 5.One end of cable 6 is arranged on cable interface 7 place on side plate 4, cable 6 is wrapped in bobbin trunk 1, and the other end of cable 6 is stretched out by leading sheave 6 or retracts, when cable 6 stretches out from bobbin trunk 1 or regains, cable 6 is from leading sheave 3 process, and the direction of outlet can change.
In above-mentioned illustrative examples, leading sheave 3 adopts magnetic material, magnetic deformation linear displacement transducer 2 is fixed on the side plate 4 of bobbin trunk 1 side, leading sheave 3 rotates around the measuring staff 5 of magnetic deformation linear displacement transducer 2, the measuring staff 5 of magnetic deformation linear displacement transducer 2 carries out outside thread process, and negative thread process is carried out at the position that the inner ring of the leading sheave 3 simultaneously made by magnetic material contacts with measuring staff 5.When cable 6 stretches out through leading sheave 3 or regains, leading sheave 3 is subject to cable 6 and stretches out or the static friction force regained and rotating, and then leading sheave 3 can be made freely can to rotate on measuring staff 5, and leading sheave 3 can in the axially generation displacement of measuring staff 5 when rotating, therefore, avoiding on the one hand cable 6 when being wound around because the disorder cable phenomenon that causes of Impact direction instability, achieving even, the individual layer, closely accurate arrangement of cable 6 in bobbin trunk 1; On the other hand, the linear in length that the displacement of leading sheave 3 level and cable 6 stretch out or regain, measure the distance of leading sheave 3 left and right displacement by magnetic deformation linear displacement transducer 2 thus calculate the length that cable 6 stretches out or regain, magnetic deformation linear displacement transducer 2 is absolute value type displacement pickup, the absolute displacement of leading sheave 3 and datum mark can be measured in real time accurately, therefore, the result reflection of measuring be the absolute length of cable 6, and the variable quantity of non-cable 6 length, result of a measurement is accurate.
As shown in Fig. 1 (b), when cable 6 stretches out or retracts, in order to ensure between leading sheave 3 and cable 6 without relative sliding, cable 6 stretches out after winding with one circuit on leading sheave 3.
As shown in Fig. 3 (a), Fig. 3 (b), what provide at the utility model has in the illustrative examples of the cable drum surveying long function, and leading sheave 3 comprises the baffle plate 32 of wheel body 31 and wheel body 31 both sides.
As shown in Figure 2, in order to ensure when cable 6 is regained, cable 6 is even, individual layer, close-packed arrays in bobbin trunk 1, the displacement of leading sheave 3 on measuring staff 5 should be consistent with the variable quantity of cable 6 in bobbin trunk 1, therefore, bobbin trunk 1 should follow following rule with the size relationship of leading sheave 3:
D
1×L＝D
2×d
Wherein, D
1for the diameter of bobbin trunk 1, D
2for the diameter of wheel body 31, L is the externally threaded pitch on measuring staff 5, and d is the diameter of cable 6.
What provide at the utility model has in the illustrative examples of the cable drum surveying long function, bobbin trunk 1 is provided with spiral cable groove, leading sheave 3 can pilot cable 6 along spiral cable groove be wound around arrangement, cable 6 can be avoided in bobbin trunk 1 to be wound around disorder cable.
Further, there is between leading sheave 3 and bobbin trunk 1 one section of setpoint distance preventing cable 6 stuck.When leading sheave 3 rotates around measuring staff 5, and when moving in the axial direction, cable 6 passes through from the space of the setpoint distance between leading sheave 3 and bobbin trunk 1, leading sheave 3 and bobbin trunk 1 can be avoided apart from the generation of crossing the stuck phenomenon entered, thus avoid occurring that cable 6 cannot normally stretch out and be dragged disconnected situation.
What the utility model provided have the cable drum surveying long function can be used in cable 6 stretch out and retraction length is measured.
Have based on what provide in above-mentioned each illustrative examples the cable drum surveying long function, it stretches out cable 6 or the rectangular method of survey of retraction length, specific as follows:
The leading sheave 3 made of magnetic material to have on externally threaded measuring staff 5 displacement s vertically, and measure by magnetic deformation linear displacement transducer 2 and obtain, the length variations amount X that can calculate cable 6 is thus:
Wherein, D
2for the diameter of wheel body 31, L is the externally threaded pitch on measuring staff 5.
The magnetic deformation linear displacement transducer 2 adopted due to the utility model is absolute value type displacement pickup, the absolute displacement of leading sheave 3 and datum mark can be measured in real time accurately, therefore, the result reflection of measuring be the absolute length of cable 6, and the variable quantity of non-cable 6 length, thus, the random error of system can be reduced, improve the particularity of cable 6 linear measure.
As shown in Figure 4, the long principle of survey of the magnetic deformation linear displacement transducer of the utility model employing is: magnetic deformation linear displacement transducer forms primarily of measuring staff, electronics storehouse and the non-contacting magnet ring a be enclosed within measuring staff.Measuring staff is built with magnetic deformation line (waveguide filament).During work, produce initial actuation pulse b by the electronic circuit in electronics storehouse, when this initial actuation pulse b transmits in waveguide filament, create the progressive rotating field c along waveguide filament side simultaneously.When the permanent-magnetic field d in this rotating field c and magnet ring a meets, produce magnetostriction effect, waveguide filament is twisted, produce twisting pulse e.This twisting pulse e is installed in Shi Neng mechanism (detection coil g) the institute's perception in electronics storehouse and converts corresponding current impulse to, time difference between being returned by electronic loop calculating output pulse initial sum, accurately can measure position and the displacement of magnet ring a, output signal f.
Magnetostriction effect: under ferromagnetic material outside magnetic field and electric field action, its size elongates or shortens, and after removing magnetic field, it recovers the original length again, and this phenomenon is called magnetostriction effect.
The leading sheave 3 that the utility model provides is equivalent to the magnet ring a in magnetic deformation linear displacement transducer.
By the description of each embodiment above-mentioned, the utility model can be derived and at least have the following advantages:
1) measuring staff 5 of magnetic deformation linear displacement transducer 2 carries out outside thread process, negative thread process is carried out at the position that the inner ring of the leading sheave 3 simultaneously made by magnetic material contacts with measuring staff 5, leading sheave 3 is in conjunction with the thread connecting mode of measuring staff 5, avoid leading sheave 3 to rock on measuring staff 5, achieve even, the individual layer, closely accurate arrangement of cable 6 in bobbin trunk 1, there is structure simple, the advantage easily realized.
2) on the diameter of the diameter of the diameter of leading sheave 3, cable 6, bobbin trunk 1, measuring staff 5, the large I of pitch is according to actual conditions, and flexible adjusted design size, is widely used.
3) magnetic deformation linear displacement transducer 2 is absolute value type displacement pickup, the absolute displacement of leading sheave 3 and datum mark can be measured in real time accurately, therefore, the result reflection of measuring be the absolute length of cable 6, and the variable quantity of non-cable 6 length, thus, the random error of system can be reduced, meanwhile, systematic error can not be produced because of the wearing and tearing of leading sheave 3, realize the accurate measurement of cable 6 length.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (6)
1. one kind has the cable drum surveying long function, it is characterized in that: comprise bobbin trunk (1), magnetic deformation linear displacement transducer (2) and leading sheave (3), the side of described bobbin trunk (1) is provided with side plate (4), described magnetic deformation linear displacement transducer (2) comprises electronics storehouse and measuring staff (5), described electronics storehouse is arranged on described side plate (4), described measuring staff (5) is positioned at the top of described bobbin trunk (1), (5) are provided with outside thread with described measuring staff, the negative thread matched with described outside thread is provided with in described leading sheave (3), described leading sheave (3) adopts magnetic material to make, described leading sheave (3) is threaded connection and is arranged on described measuring staff (5).
2. there is cable drum as claimed in claim 1 that survey long function, it is characterized in that: described leading sheave (3) comprises wheel body (31) and is arranged on the baffle plate (32) of described wheel body (31) both sides.
3. there is cable drum as claimed in claim 2 that survey long function, it is characterized in that: described bobbin trunk (1) with the size relationship of described wheel body (31) is:
D
1×L＝D
2×d
Wherein, D
1for the diameter of described bobbin trunk (1), D
2for the diameter of described wheel body (31), L is the externally threaded pitch on described measuring staff (5), and d is the diameter of cable (6).
4. there is cable drum as claimed in claim 1 that survey long function, it is characterized in that: (1) is provided with spiral cable groove to described bobbin trunk.
5. there is cable drum as claimed in claim 1 that survey long function, it is characterized in that: there is between described leading sheave (3) and described bobbin trunk (1) setpoint distance preventing cable (6) stuck.
6. a hoisting crane, is characterized in that: comprise and have the cable drum surveying long function as described in any one of claim 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743157.9U CN204324727U (en) | 2014-12-02 | 2014-12-02 | There is the cable drum and hoisting crane of surveying long function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743157.9U CN204324727U (en) | 2014-12-02 | 2014-12-02 | There is the cable drum and hoisting crane of surveying long function |
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| Publication Number | Publication Date |
|---|---|
| CN204324727U true CN204324727U (en) | 2015-05-13 |
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ID=53161107
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420743157.9U Active CN204324727U (en) | 2014-12-02 | 2014-12-02 | There is the cable drum and hoisting crane of surveying long function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204324727U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197798A (en) * | 2014-12-02 | 2015-12-30 | 徐州重型机械有限公司 | Cable drum with length measurement function, length measurement method and crane |
| CN108750955A (en) * | 2018-08-03 | 2018-11-06 | 中国十九冶集团有限公司 | It detects the device and method of elevator rope stretching length and obtains suspension hook terrain clearance method |
-
2014
- 2014-12-02 CN CN201420743157.9U patent/CN204324727U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105197798A (en) * | 2014-12-02 | 2015-12-30 | 徐州重型机械有限公司 | Cable drum with length measurement function, length measurement method and crane |
| CN105197798B (en) * | 2014-12-02 | 2017-01-25 | 徐州重型机械有限公司 | Cable drum with length measurement function, length measurement method and crane |
| CN108750955A (en) * | 2018-08-03 | 2018-11-06 | 中国十九冶集团有限公司 | It detects the device and method of elevator rope stretching length and obtains suspension hook terrain clearance method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |