WO1999045359A1 - Dispositif d'examen, de prelevement, ou d'extraction a un point precis sous une dalle - Google Patents
Dispositif d'examen, de prelevement, ou d'extraction a un point precis sous une dalle Download PDFInfo
- Publication number
- WO1999045359A1 WO1999045359A1 PCT/FR1999/000492 FR9900492W WO9945359A1 WO 1999045359 A1 WO1999045359 A1 WO 1999045359A1 FR 9900492 W FR9900492 W FR 9900492W WO 9945359 A1 WO9945359 A1 WO 9945359A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- slab
- guide
- cable
- opening
- cables
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
- B66C13/085—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions electrical
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Definitions
- the invention relates to an examination, sampling or extraction device at a specific point under a slab, and it can be applied in particular to dangerous products poured for long-term storage in silos with a ceiling.
- a suitable organ suspended from a support cable into the silo through the opening can be a grapple in the case of solid samples or a stirring and pumping group for liquid or movable samples.
- the organ can be a grapple in the case of solid samples or a stirring and pumping group for liquid or movable samples.
- the end of the cable is pushed back by guiding it by poles engaged obliquely through the opening, which is tedious, imprecise while being able to present dangers and without generally allowing to reach the edges. of the silo, whose width is often about ten meters.
- the purpose of the device of the invention is to compensate for these defects and in particular to conveniently allow examinations or sampling of the contents of the silo at any location, and to guide the organ lowered under the slab with great precision.
- the device of the invention has the other advantages of requiring no human intervention under the slab or near the opening, and of being robust enough to require only infrequent maintenance, which is essential for the application. mainly envisaged radioactive waste.
- It is characterized in that it comprises at least three guide cables located under the slab, converging towards a guide means at the hollowed out periphery, in the form of a cross or a star, located under the slab, to which they are hung in crossing the slab by holes arranged at the periphery of the silo, and wound on winches actuated by motors, a common control system of the winches, and in that the spider is provided with surfaces for sliding the support cable between points for hanging the guide cables.
- the winding of the guide cables makes it possible to move the cross-member, as well as the support cable, which has previously been allowed to hang against a suitable face of the cross-member between two attachment points for the guide cables.
- the examination or sampling organ is then driven above the desired location, and it is then sufficient to bring it down so that it arrives at the sample.
- the guide cables can advantageously be four, the holes through which it passes under the slab being arranged in a rectangle, at the corners of silos of the same shape, which makes it possible to bring the spider everywhere under the slab.
- the invention lends itself to many other improvements. Some aim to guarantee the precision of the movements of the spider.
- the winch motors can then be fitted with force measurement sensors, connected to the control system, to assess the elongation of the cables due to traction and to correct the motor controls accordingly;
- the bores can be fitted with sheaths carrying rollers delimiting a curved guide device, in which a respective guide cable slides and which serves to better orient it towards the cross-member by pivoting the sheath by a motor directed by the control system .
- the winches can include drums with a hollowed out surface of a helical groove for receiving the guide cables in single-layer winding, which means that the rotation of the drums always unwinds the same length of guide cable.
- the support cable should also not be subjected to excessive friction. We can then provide the spider, the opening of the slab or both of the rollers on which it slides. Precise guidance of the support cable is obtained if the surfaces of the spider are concave by connecting the attachment points of the guide cables, the sliding rollers arranged around the opening of the slab being arranged on a polygonal and rotating ring.
- FIG. 1 is a general view of the device and of its situation
- FIGS. 2 and 3 are representations of the holes intended for the guide cable and the adjacent equipment
- FIG. 4 is an isolated view of the support cable
- FIGS. 5 and 6 are views of the spider to which guide cables are hung
- Figures 7 and 8 are views of the opening of the slab, • and Figure 9 is an enlargement of Figure 8.
- a silo 1 is in the form of a substantially cubic concrete envelope, the top of which forms a slab 2 (often called "cover-slab") on either side of which the invention is installed.
- the slab 2 is pierced with an opening 3 in the center, which allows access to the pit 4 encompassed by the silo 1 and through which the waste is poured into it.
- the opening 3 is used for the introduction of a grapple 7, intended for the removal of solid waste 5 and which here represents the tool for which the invention is designed, but it is obvious that many others could replace it according to the nature of the work to be carried out.
- the grab 7 is suspended from a support cable 8 wound to a lifting winch 9.
- the guide cables 11 converge on a part in the form of a hollowed-out cross, here a cross 13, on which the support cable slides.
- a control system 14 is connected to the winches 9 and 10 for the controls: the winding or the proper unwinding of the guide cables 11 allows the cross member 13 to be moved at will under the slab 2, as well as the grapple 7 which hangs below it; that of the support cable 8 makes it possible to lower or raise the grab 7, in particular when it overhangs the desired " sampling point.
- the control system 14 comprises a computer connected to the motors and sensors for controlling the winches 9 and 10; we will give away additional details on to. process control.
- FIG. 2 represents a guide winch 10 seen from the front. Its motor bears the reference 15 and drives the axis 16 of horizontal rotation of a drum 17 by a kinematic chain composed of a reduction gear 18, a torque limiter 19 and a torque measurement sensor 20.
- the torque limiter 19 aims to prevent imposing too much traction on the guide cable 11 by disengaging the motor 15 and the sensor 20 allows, if desired, to evaluate the elongation of the guide cable 11 consecutive at this pull; it is therefore connected to the control system 14.
- the axis 16 is provided with a resolver 21, or with another sensor capable of measuring its angles of rotation and therefore the windings and unwinds of the guide cable 11.
- the motor 15 and its output shaft are supported by bearings 22 of a frame 23 fixed on slab 2, and the axis of rotation 16 of the drum 17 is mounted on another pair of bearings 24 of another frame 25, also fixed on the slab 2.
- the bore 12 is equipped with a sheath 26 whose first function is to restore the sealing of the slab 2 at this location and which for this purpose comprises a first washer 27 at its lower end and a second washer 28 at its upper end.
- the guide cable 11 must however pass through the sheath 26 and the washers 27 and 28; this is why these two washers are provided with diametrical slots 29 and 30, which are arranged so as to intersect to prevent radiation originating from the waste 5 and 6 from passing too easily through the bore 12.
- the slot 30 of the upper washer 28 further aims to allow the guide cable 11 to pass without friction, regardless of the part of the drum 17 from which it is unwound: it is therefore parallel to the unwinding edge of the drum 17.
- a bar 31, called anti-dinghy, is placed against this unwinding edge in order to apply pressure by the guide cable 11 for a reason which will be explained later.
- FIG. 3 is a side view of the same parts, but it will above all serve to illustrate the sheath 12 in more detail. 7
- the lower washer 27 carries a return box 33, composed of rollers 34 in the form of a diabolo and which delimit a groove 35 between them and through which the guide cable 11 passes.
- the groove 35 is curved, with a vertical upper end and a horizontal or oblique lower end, in order to allow the guide cable 11 to pass from a vertical length, where it crosses the bore 12, to an oblique or horizontal length under the slab 2 where it remains sufficiently high above the level of the liquid waste 6.
- the return box 33 can be directed towards the spider 13: the sleeve 12 is therefore placed on the slab 2 so as to pivot, and a motor 36, mounted on a frame 37 fixed to the slab 2 , drives it via a reduction gear 38, a pinion 39 and a ring gear 40 mounted on the periphery of the sheath 12.
- a coder 41 informs the control system 14 of the movements accomplished by the sheath 26.
- the reference 42 designates a handle fixed to the upper washer 28 and which makes it possible to extract the sleeve 26 from the bore 12 or to let it descend there.
- the lifting winch 9 of the support cable 8 is shown in FIG. 4. It also comprises a drum 43 with axes 44 of horizontal rotation mounted on a pair of bearings 45 of a frame 46 established on the slab 2, and which a motor 48 drives via a reduction gear 49.
- An encoder 50 makes it possible to measure the rotations of the axis 44 and to transmit them " to the control system 14.
- the motor 49 is still supported by bearings 51, on a part of the frame 46.
- An essential construction element is that the drum 43 has its outer surface notched by a helical groove 52 intended for a single-layer winding of the support cable 8, which is therefore caused to follow the groove 52 along the drum 43 when it is wound up. (31) of the guide winches 10 performs this function by pressing the lifting cable 8 as soon as it approaches the groove 43 and therefore forcing it to follow its oblique direction.
- the support cable 8 is unwound at the same time as a pipe 54 for supplying fluid to jacks 55 for moving the claws 56 of the grapple 7.
- the pipe 54 is connected to a fixed pipe 57 by the intermediate a rotary joint 58 in the extension of the axis 44 and next to the drum 43.
- the assembly constituted by the lifting cable 8 and the pipe 54 is more easily subject to damage and more difficult to guide than a simple cable, which leads to taking the extra precautions below to solve this problem.
- the cross 13 is seen from above in FIG. 5. It is composed of four appendages 59 directed towards the guide cables 11 and terminated by vertical rings 60 pivoting around vertical axes 61, in which loops 62 at the ends of the cables 11 are engaged. This assembly makes it possible to direct the spider 13 with great precision.
- the appendages 59 are provided with rollers 63 on their upper faces, as well as the body 64 of the spider 13 which unites the appendages 59 therebetween. These faces are convex so that the support cable 8 rests on the rollers 63 over a suitable length, as FIG.
- FIGS. 7 to 9 represent the areas around the opening 3 of the slab 2.
- a concrete cover usually closes the opening 3, but it is removed when the invention has to be put into service.
- an octagonal crown 67 appear which circumscribes the opening 3.
- This crown 67 rotates on a circular surface 68 of the slab 2 provided with two circles of balls 69 directed upwards and downwards and which support the crown 6.7 " by keeping it at a constant level, possibly preventing it from being lifted when the tensioned support cable 8 passes under it, and the sides of the octagon are delimited by groups of rollers 70 superimposed fleetingly downwards, that is to say, they are always further from the center of the opening 3.
- the support cable 8 is drawn towards the crown 67 until so that it touches the rollers 70 on one of its sides; it then slides on them conveniently and without rubbing on the slab 2; the crown 67 rotates to reduce friction with the support cable 8 and the wear of that
- the sup cable portage 8 slides to the corner of two neighboring groups of rollers 70 and remains there until the end of the process, by controlling the rotations of the crown 67 to follow its movements: friction on the support cable 8 , which would have been important if it had slipped around the opening and would have hindered the proper course, then becomes very weak.
- Reference 66 designates a funnel covering the crown 11
- Some of the guide cables 11 are then wound up while unrolling some of the others to move the spider 13 so as to place the support cable 8 in the desired groove 65 and then to move the grapple 7 to the desired location; these movements are accompanied by a progressive unwinding of the support cable 8 to prevent the grab 7 from going up to the cross 13; the control system 14 calculates at any time the length of each of the guide cables 11 using information from the resolvers 21, then the position of the spider 13 and that of the grab 7; it also directs the sleeves 26. It can take account of the elongation of the guide cables 11 consecutive to their pulling and of the position of the groove 65 on which the lifting cable 8 slides to improve the position calculation of the grapple 7.
- the control system 14 continues to operate the lifting winch 9 until the grab 7 has descended to the desired altitude; he 12 takes into account the length of which the support cable 8 has been previously unwound and that the sensor 50 has indicated to it.
- the jacks 55 can then be put into action to close the claws 56 and grab a sample of the waste, after which the preceding operations are carried out in the opposite direction to bring the grapple 7 below the opening 3 and reassemble it.
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sampling And Sample Adjustment (AREA)
- Control And Safety Of Cranes (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0020535A GB2351721B (en) | 1998-03-05 | 1999-03-04 | Device for examination, sampling, or extraction at a precise position under a slab |
| DE19982997T DE19982997B4 (de) | 1998-03-05 | 1999-03-04 | Vorrichtung zum Untersuchen, Entnehmen oder Extrahieren eines Inhalts eines Silos an einen präzisen Punkt unter einer Platte |
| US09/623,604 US6951442B1 (en) | 1998-03-05 | 1999-03-04 | Device for inspecting, sampling or extracting at a precise spot beneath a slab |
| JP2000534847A JP4430817B2 (ja) | 1998-03-05 | 1999-03-04 | スラブ下の正確な位置での検査、サンプリング、または取出しのための装置 |
| UA2000085076A UA66379C2 (en) | 1998-03-05 | 1999-04-03 | Device for drawing samples or extracting the content of a closed pit at an exactly determined area |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR98/02702 | 1998-03-05 | ||
| FR9802702A FR2775785B1 (fr) | 1998-03-05 | 1998-03-05 | Dispositif d'examen, de prelevement, ou d'extraction a un point precis sous une dalle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999045359A1 true WO1999045359A1 (fr) | 1999-09-10 |
Family
ID=9523694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1999/000492 Ceased WO1999045359A1 (fr) | 1998-03-05 | 1999-03-04 | Dispositif d'examen, de prelevement, ou d'extraction a un point precis sous une dalle |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6951442B1 (fr) |
| JP (1) | JP4430817B2 (fr) |
| DE (1) | DE19982997B4 (fr) |
| FR (1) | FR2775785B1 (fr) |
| GB (1) | GB2351721B (fr) |
| RU (1) | RU2216719C2 (fr) |
| UA (1) | UA66379C2 (fr) |
| WO (1) | WO1999045359A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001242178A (ja) * | 2000-02-29 | 2001-09-07 | Mitsubishi Chemicals Corp | 検体容器におけるフィブリン塊の除去方法 |
| CN102735497A (zh) * | 2012-06-27 | 2012-10-17 | 哈尔滨工业大学 | 依靠摩擦力传动的钻探取心加载机构 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6975089B2 (en) * | 2003-07-28 | 2005-12-13 | Cablecam International Inc. | System and method for facilitating fluid three-dimensional movement of an object via directional force |
| GB0419446D0 (en) * | 2004-09-02 | 2004-10-06 | Lyons Keith | Materials retrieval system and method |
| WO2008027588A2 (fr) * | 2006-08-31 | 2008-03-06 | Faro Technologies, Inc. | Sonde intelligente |
| GB2554889B (en) * | 2016-10-12 | 2019-01-02 | Poulton Tech Limited | A seal assembly |
| CN114755394B (zh) * | 2022-06-15 | 2022-10-14 | 河北省水利科学研究院 | 可视化水土保持监测装置及其监测方法 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049357A (en) * | 1976-04-30 | 1977-09-20 | Monarch Marking Systems, Inc. | Sliding coupling device for a lanyard or the like |
| US4289437A (en) * | 1979-01-12 | 1981-09-15 | Veda, Inc. | Silo unloader lowering control |
| US4465418A (en) * | 1982-02-25 | 1984-08-14 | Starline Products, Inc. | Suspension for ring drive silo unloader |
| DE3415299A1 (de) * | 1984-04-24 | 1985-10-31 | Höfer & Bechtel GmbH, 6451 Mainhausen | Vorrichtung zur positionierung einer fernbedienbaren beobachtungseinrichtung |
| DE3524857A1 (de) * | 1985-07-12 | 1987-01-22 | Gutehoffnungshuette Man | Einrichtung zur pruefung schwer zugaenglicher oberflaechen |
| DE3613038A1 (de) * | 1986-04-17 | 1987-10-22 | Hans Degro | Vorrichtung zur probeentnahme von schuettguetern, insbesondere kohle |
| US4836125A (en) * | 1985-05-10 | 1989-06-06 | John T. Hepburn Limited | Anchoring system for floating structure |
| US5379657A (en) * | 1992-06-22 | 1995-01-10 | Timothy K. Hasselman | Microgravity suspension system for simulating a weightless environment |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE963729C (de) * | 1955-02-09 | 1957-05-09 | Elfa App Vertriebs G M B H | Vorrichtung zur Probenahme von Feldfruechten, wie Rueben, Kartoffeln u. dgl. |
| DE1743409U (de) * | 1957-02-21 | 1957-04-18 | Buckau Wolf Maschf R | Probeentnahmeeinrichtung fuer zuckerrueben u. dgl. schuettgueter. |
| NL96456C (fr) * | 1958-09-26 | |||
| US3823615A (en) * | 1973-04-19 | 1974-07-16 | Univ California | Sampler for bulk grapes |
| CA1075491A (fr) * | 1975-07-11 | 1980-04-15 | Stanislav J. Istoshin | Echantillonneur de boues deposees au fond de bassins profonds |
| FR2558006B1 (fr) * | 1984-01-11 | 1986-04-25 | Commissariat Energie Atomique | Dispositif pour la manutention d'assemblages de combustible nucleaire et assemblage adapte a un tel dispositif |
| US5223280A (en) * | 1989-06-13 | 1993-06-29 | Bridgestone Corporation | Apparatus for taking residual solid matter out of extrusion head |
| RU2045753C1 (ru) * | 1990-12-10 | 1995-10-10 | Юрий Леонидович Гаранько | Пробоотборник донного грунта |
| JP2832104B2 (ja) * | 1991-11-19 | 1998-12-02 | 株式会社神戸製鋼所 | 高炉における装入物サンプリング装置 |
| US5526989A (en) * | 1994-08-08 | 1996-06-18 | Staples; Wesley A. | Method of operation of positive guidance system for a tank-cleaning device |
-
1998
- 1998-03-05 FR FR9802702A patent/FR2775785B1/fr not_active Expired - Lifetime
-
1999
- 1999-03-04 US US09/623,604 patent/US6951442B1/en not_active Expired - Fee Related
- 1999-03-04 RU RU2000125112/12A patent/RU2216719C2/ru not_active IP Right Cessation
- 1999-03-04 DE DE19982997T patent/DE19982997B4/de not_active Expired - Fee Related
- 1999-03-04 WO PCT/FR1999/000492 patent/WO1999045359A1/fr not_active Ceased
- 1999-03-04 JP JP2000534847A patent/JP4430817B2/ja not_active Expired - Fee Related
- 1999-03-04 GB GB0020535A patent/GB2351721B/en not_active Expired - Lifetime
- 1999-04-03 UA UA2000085076A patent/UA66379C2/uk unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4049357A (en) * | 1976-04-30 | 1977-09-20 | Monarch Marking Systems, Inc. | Sliding coupling device for a lanyard or the like |
| US4289437A (en) * | 1979-01-12 | 1981-09-15 | Veda, Inc. | Silo unloader lowering control |
| US4465418A (en) * | 1982-02-25 | 1984-08-14 | Starline Products, Inc. | Suspension for ring drive silo unloader |
| DE3415299A1 (de) * | 1984-04-24 | 1985-10-31 | Höfer & Bechtel GmbH, 6451 Mainhausen | Vorrichtung zur positionierung einer fernbedienbaren beobachtungseinrichtung |
| US4836125A (en) * | 1985-05-10 | 1989-06-06 | John T. Hepburn Limited | Anchoring system for floating structure |
| DE3524857A1 (de) * | 1985-07-12 | 1987-01-22 | Gutehoffnungshuette Man | Einrichtung zur pruefung schwer zugaenglicher oberflaechen |
| DE3613038A1 (de) * | 1986-04-17 | 1987-10-22 | Hans Degro | Vorrichtung zur probeentnahme von schuettguetern, insbesondere kohle |
| US5379657A (en) * | 1992-06-22 | 1995-01-10 | Timothy K. Hasselman | Microgravity suspension system for simulating a weightless environment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001242178A (ja) * | 2000-02-29 | 2001-09-07 | Mitsubishi Chemicals Corp | 検体容器におけるフィブリン塊の除去方法 |
| CN102735497A (zh) * | 2012-06-27 | 2012-10-17 | 哈尔滨工业大学 | 依靠摩擦力传动的钻探取心加载机构 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19982997T1 (de) | 2001-02-22 |
| UA66379C2 (en) | 2004-05-17 |
| US6951442B1 (en) | 2005-10-04 |
| JP4430817B2 (ja) | 2010-03-10 |
| JP2002505986A (ja) | 2002-02-26 |
| GB2351721B (en) | 2001-07-25 |
| FR2775785B1 (fr) | 2000-04-28 |
| DE19982997B4 (de) | 2007-04-12 |
| FR2775785A1 (fr) | 1999-09-10 |
| GB2351721A (en) | 2001-01-10 |
| RU2216719C2 (ru) | 2003-11-20 |
| GB0020535D0 (en) | 2000-10-11 |
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