CN101916976A - Tensioning method for temperature measuring cable in flat silo and vertical silo - Google Patents
Tensioning method for temperature measuring cable in flat silo and vertical silo Download PDFInfo
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- CN101916976A CN101916976A CN2010102402561A CN201010240256A CN101916976A CN 101916976 A CN101916976 A CN 101916976A CN 2010102402561 A CN2010102402561 A CN 2010102402561A CN 201010240256 A CN201010240256 A CN 201010240256A CN 101916976 A CN101916976 A CN 101916976A
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- temperature measuring
- silo
- measuring cable
- measuring temperature
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000004062 sedimentation Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 3
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 235000013339 cereals Nutrition 0.000 description 37
- 238000009434 installation Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention relates to a tensioning method for a temperature measuring cable in a silo, in particular to a tensioning method for reducing the tension of a temperature measuring cable in a flat silo or a vertical silo. The flat silo and the vertical silo are the main silo forms of the modern grain depots and have a loading height of over 20m. For a conventional temperature measuring cable (containing a cable wire inside) for the internal temperature measurement of grains, an upper end is fixed on the ceiling of a depot and a lower end is fixed on the ground and tensioned before the loading of grains. The grains in the middle lower parts of the depot apply a big pressure to the temperature measuring cable, generate a friction of thousands of kilograms and drive the temperature measuring cable to move downwards when descending and therefore result in tensile failure of the temperature measuring cable. The force from dozens of cables finally acts on the roof to increase the roof load. By the method of connecting the upper end of the temperature measuring cable 1 to the cable wire 2 and then to a heavy object 4 by a fixed block fixed on an upper support for the dynamic tension, when the surface of the grains is descending, the upper end of the temperature measuring cable can descend with the descent of the surface of the grains to reduce the tension to the temperature measuring cable.
Description
Technical field
The present invention relates to a kind of tensioning method of barn temperature measuring cable, relate in particular to a kind of tensioning method that reduces the cable for measuring temperature tensile force of storehouse, shallow garden or vertical silo.
Background technology
Modern grain logistics requirement grain puts in storage and delivers from godown soon, and government investment has been built up the large-scale modernized grain depot based on storehouse, shallow garden, vertical silo, has accelerated the turnover storehouse speed of grain greatly.But because storehouse, shallow garden and vertical silo loading highly reach more than 20 meters, inside be used to detect the cable for measuring temperature of cereal temperature must be before going into grain from the roof hanging to Horizon, cable for measuring temperature moves on the Horizon that the lower end need be fixed under the cable when preventing grain.In going into the grain process or in the keeping process since the vibration of nature or during operation the vibration of (as mechanical draft) all can cause the grain face to sink.Because grain face height, middle and lower part grain has very big pressure to cable for measuring temperature, cause producing between grain and the cable for measuring temperature very big frictional force, this frictional force can reach thousands of kilograms and several thousand kilograms, in order not make this frictional force cable for measuring temperature is broken, method is that cable for measuring temperature is accomplished with thicker steel wire rope at present, just make the cable for measuring temperature (the described cable for measuring temperature in back is the cable for measuring temperature of band steel wire rope) that has than coarse-wire rope, cable for measuring temperature displacement in order to prevent into grain, in advance will be the steel wire rope tensioning, when going into grain or grain keeping process China Oil and Food Import and Export Corporation face sink to all acting on the steel wire rope to the downward frictional force of cable, to such an extent as to cable for measuring temperature often occurs by tensile phenomenon, this power finally acts on the roof by steel wire rope, tens cable for measuring temperature can increase by tens tons of roof load, thereby the rated load that must increase the roof when design increases the cost of opening a position, and also increases the cost of cable for measuring temperature.The present invention adopts the dynamic tension method, the cable for measuring temperature lower end is fixed on the Horizon, the upper end is made the form that can move up and down rather than is fixed on the ceiling, adding a fixing tensile force in advance strains cable, when the sedimentation of grain face, the cable for measuring temperature upper end descends with the decline of grain face, has reduced the pulling force of cable for measuring temperature, also reduced pressure, can reduce the construction cost on roof, the cost of reduction cable the roof.
Summary of the invention
The present invention adopts the dynamic tension method, has reduced the pulling force of cable for measuring temperature.
Content of the present invention is: as Fig. 1, the lower end of cable for measuring temperature 1 is fixed on the earth anchor 5 on the Horizon 7, and the upper end is connected with tensioning steel wire rope 2, and steel wire rope 2 connects a mass 4 by being fixed on top fixed pulley 3 at the other end.When grain drove cable for measuring temperature 1 sinking, mass 4 was pulled upwards by fixed pulley 3, prevented that grain from sinking and the frictional force of cable all acts on the roof, can keep the fixed-site of cable for measuring temperature again., fixed pulley 3 can be fixed on the member 6 that the member that tiltedly draws installation in the storehouse or level install owing to adopt the tensile force of dynamic tension method cable for measuring temperature to reduce as Fig. 2, be convenient to install the miscellaneous equipment of silo to vacate headroom.
Description of drawings
The present invention will be further described below in conjunction with accompanying drawing and embodiment:
Fig. 1 is the schematic diagram of overall structure structure of the present invention and example 1
Fig. 2 is the structural representation of example 2
Fig. 3 is the structural representation of example 3
Fig. 4 is the structural representation of example 4
Embodiment
Example 1, Fig. 1 is fixed on the lower end of cable for measuring temperature 1 on the earth anchor 5 on the Horizon 7, the upper end is connected with tensioning steel wire rope 2, on ceiling 6, fix a fixed pulley 3, steel wire rope 2 connects a mass 4 by fixed pulley 3 at the other end, mass 4 has bigger quality, and in dropping process cable for measuring temperature to be washed away the frictional force of generation downwards very little for grain when going into grain, is not enough to drive cable for measuring temperature and descends.When grain installs to certain altitude or fills the back because vibrations and sedimentation drive cable for measuring temperature 1 when sinking, mass 4 is pulled upwards by fixed pulley 3, the power on the roof 6 of acting on has only the strength of the gravity of 2 times of mass 4, has prevented that the frictional force that grain sinks with cable from all acting on the roof 6; Because fixing before the loading of cable for measuring temperature lower end, pre-tensioning is arranged again at top, thereby the fixed-site of retainable cable for measuring temperature.
Example 2, Fig. 2 is fixed on the lower end of cable for measuring temperature 1 on the earth anchor 5 on the Horizon 7, the upper end is connected with tensioning steel wire rope 2, fix a fixed pulley 3 on the member 6 that in the storehouse, tiltedly draws the member of installation or level to install, steel wire rope 2 connects a mass 4 by fixed pulley 3 at the other end, mass 4 has bigger quality, and it is very little in the grain dropping process cable for measuring temperature to be washed away the frictional force of generation downwards when going into grain, is not enough to drive cable for measuring temperature and descends.When grain installs to certain altitude or fills the back owing to 1 sinking of vibration sedimentation drive cable for measuring temperature, mass 4 is pulled upwards by fixed pulley 3, act on the strength that the member that tiltedly draws installation in the storehouse or the power on the horizontal installation component 6 have only the gravity of 2 times of mass 4, tiltedly draw the member or the horizontal installation component 6 of installation to be unlikely to oversize in making, vacateed the silo upper space and can be used for installing miscellaneous equipment; Because fixing before the loading of cable for measuring temperature lower end, the fixed pulley that top connects also is fixed, and pre-tensioning is arranged again, thereby the fixed-site of retainable cable for measuring temperature.
Example 3, among Fig. 3, the lower end of cable for measuring temperature 1 is fixed on the earth anchor 5 on the Horizon 7, in roof or storehouse, tiltedly draw the spring 4 of a certain-length of fixed installation on the member 6 that the member of installation or level install, the upper end of cable for measuring temperature 1 is connected the below of spring 4, produces a pretension with tension cable for measuring temperature 1 by spring in advance the certain elongation of spring.It is very little in the grain dropping process cable for measuring temperature 1 to be washed away the frictional force of generation downwards when going into grain, being not enough to drive cable for measuring temperature 1 descends, when grain installs to certain altitude or fills the back owing to 1 sinking of vibration sedimentation drive cable for measuring temperature, the spring elongation, cable descends, and has prevented that grain from sinking and the frictional force of cable all acts on the upper support; Because fixing before the loading of cable for measuring temperature lower end, the pre-tensioning of spring is arranged again at top, thereby the fixed-site of retainable cable for measuring temperature.
Example 4, among Fig. 4, the lower end of cable for measuring temperature 1 is fixed on the earth anchor 5 on the Horizon 7, the upper end connects steel wire rope 2, in roof or storehouse, tiltedly draw fixed installation one friction member 4 on the member 6 that the member of installation or level install, steel wire rope 2 is put into friction member 4, regulate the pressure of friction member 4, can adjust the frictional resistance of 4 pairs of steel wire ropes 2 of friction member.Before going into grain, earlier cable for measuring temperature is tensioned to the power that needs in advance, it is loosening that the pressure of adjusting friction member 4 can just be pushed down steel wire rope 2, and pull of steel wire surpasses this tensile force and will move out from friction member.It is very little in the grain dropping process cable for measuring temperature 1 to be washed away the frictional force of generation downwards when going into grain, being not enough to drive cable for measuring temperature 1 descends, when grain installs to certain altitude or fills the back owing to 1 sinking of vibration sedimentation drive cable for measuring temperature, thereby the pulling force that steel wire rope 2 is subjected to is extracted out downwards from friction member the frictional force steel wire rope 2 of steel wire rope greater than member, cable descends, and the frictional force of grain and cable all acts on the upper support when having prevented the grain sinking; Fixing before the loading of cable for measuring temperature lower end, pre-tensioning is arranged again at top, thereby the fixed-site of retainable cable for measuring temperature.
The present invention is simple in structure, and the cable maximum weighted is constant and can predict, can determine the thickness of steel wire rope in the cable for measuring temperature in advance, and can reduce in a large number because the grain sedimentation to the pressure on roof, reduces the construction cost on roof.
Claims (3)
1. the tensioning method of cable for measuring temperature in storehouse, shallow garden and the vertical silo is characterized in that the lower end of cable for measuring temperature 1 is fixed on the earth anchor 5 on the Horizon 7, and the upper end can move down with the grain sedimentation after passing through tensioning.
2. according to the described tensioning method of claim 1, tensioning apparatus be fixed on tiltedly draw in the silo or member that level is installed on.
3. tensioning method according to claim 1, tensioning will terminate on the cable for measuring temperature 1 on the steel wire rope 2, and steel wire rope 2 is realized by the gravity traction of weight 4 by a fixed pulley 3 connections one weight 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102402561A CN101916976A (en) | 2010-07-30 | 2010-07-30 | Tensioning method for temperature measuring cable in flat silo and vertical silo |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102402561A CN101916976A (en) | 2010-07-30 | 2010-07-30 | Tensioning method for temperature measuring cable in flat silo and vertical silo |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101916976A true CN101916976A (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102402561A Pending CN101916976A (en) | 2010-07-30 | 2010-07-30 | Tensioning method for temperature measuring cable in flat silo and vertical silo |
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| CN (1) | CN101916976A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730223A (en) * | 2021-01-29 | 2021-04-30 | 交通运输部天津水运工程科学研究所 | Device and method for testing dynamic friction coefficient between temperature measuring cable and stored grain |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173186Y (en) * | 1993-12-08 | 1994-08-03 | 铁道部第三勘测设计院电化处 | Constant tension dished spring compensator for electrification railway contact net |
| CN1162207A (en) * | 1996-03-13 | 1997-10-15 | 韩国电气通信公社 | Buffer clamps for cable erection |
| CN201321319Y (en) * | 2008-11-06 | 2009-10-07 | 杭州新马电梯有限公司 | Compensation device of open-air sightseeing lift |
| KR20100054577A (en) * | 2008-11-14 | 2010-05-25 | 서울메트로 | A device for tester which state of regulate the tension at streetcar line |
-
2010
- 2010-07-30 CN CN2010102402561A patent/CN101916976A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173186Y (en) * | 1993-12-08 | 1994-08-03 | 铁道部第三勘测设计院电化处 | Constant tension dished spring compensator for electrification railway contact net |
| CN1162207A (en) * | 1996-03-13 | 1997-10-15 | 韩国电气通信公社 | Buffer clamps for cable erection |
| CN201321319Y (en) * | 2008-11-06 | 2009-10-07 | 杭州新马电梯有限公司 | Compensation device of open-air sightseeing lift |
| KR20100054577A (en) * | 2008-11-14 | 2010-05-25 | 서울메트로 | A device for tester which state of regulate the tension at streetcar line |
Non-Patent Citations (2)
| Title |
|---|
| 任建林: "《美国粮食钢板筒仓技术》", 30 November 1995, 气象出版社, article "钢板筒仓主要安全贮粮设施", pages: 238-249 * |
| 吉鹏霄: "《接触网》", 31 August 2006, 化学工业出版社, article "接触网补偿装置", pages: 68-72 - 77 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730223A (en) * | 2021-01-29 | 2021-04-30 | 交通运输部天津水运工程科学研究所 | Device and method for testing dynamic friction coefficient between temperature measuring cable and stored grain |
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Application publication date: 20101215 |