CN103953687A - High gravity field drag-chain supporting device - Google Patents
High gravity field drag-chain supporting device Download PDFInfo
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- CN103953687A CN103953687A CN201410204351.4A CN201410204351A CN103953687A CN 103953687 A CN103953687 A CN 103953687A CN 201410204351 A CN201410204351 A CN 201410204351A CN 103953687 A CN103953687 A CN 103953687A
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- Prior art keywords
- drag chain
- traversing carriage
- connecting plate
- drag
- gravity field
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Abstract
The invention discloses a high gravity field drag-chain supporting device. The high gravity field drag-chain supporting device comprises a drag connecting plate, a fixed bracket, a moving bracket, pulleys and hauling cables, wherein the drag connecting plate is used to be connected with a moving component; the moving bracket is mounted on the fixed bracket and can move; the moving bracket is located under the drag connecting plate; a first end of the drag chain and the fixed bracket are fixedly mounted on a supporter on the same plane surface; a second end of the drag chain bypasses the moving bracket and then is fixed on the drag connecting plate; the two pulleys are respectively mounted on outer sides at two ends of the moving bracket; first ends of the two hauling cables are respectively connected with the drag connecting plate; second ends of the two hauling cables bypass one of the pulley and then are connected with the outer side of the fixed bracket. In the invention, as the transmission unit comprises two sets of the pulleys and the hauling cables and is capable of being mounted reversely, the transmission unit can realize synchronous movement of the moving bracket and a bend position of the drag chain, so as to ensure that the moving bracket can be driven by the drag connecting plate to perform corresponding controlled precise motion in the reciprocating motion process.
Description
Technical field
The present invention relates to a kind of drag chain support device, relate in particular to a kind of super gravity field drag chain support device that drag chain total travel is propped up to overfill protection.
Background technique
Drag chain is comprised of numerous unit links, between link unit, rotates freely, and whole outer likeness in form tank chain, is suitable for use in reciprocating occasion, can play traction and protective action to built-in cable, oil pipe, tracheae, water pipe etc.
Such as, geotechnical centrifuge tool hand is the necessaries that centrifuge completes test operation in running, and drag chain is the efficient mechanism of the protection of geotechnical centrifuge tool hand pipeline and traction.Along with the development of Geotechnical Engineering, for compared with the actual ground work progress of real simulation, geotechnical centrifuge tool hand structure becomes increasingly complex, and related pipeline is more and more, and its stroke is also increasing.In order to improve the effective travel of mechanism hand in the limited hanging basket of geotechnical centrifuge space, drag chain can only be selected small and exquisite, compact plastics drag chain, and adopts horizontal mounting type.
Under super gravity field, under the centrifugal action that the drag chain that level is installed produces at deadweight and drag chain gut line and make overhanging portion sagging.Along with the growth of overhanging portion, when the centrifugal force of overhanging portion generation surpasses the bearing capacity of drag chain, will cause drag chain to destroy.Facts have proved, the unsettled length that drag chain carries under super gravity field is very little.The destruction of drag chain can cause that drag chain inner cable damages, thereby makes the mechanism hand of working under super gravity field uncontrollable, and then may cause the damage of equipment.Therefore,, under super gravity field, drag chain is supported to reduce its unsettled length extremely important.
For solving drag chain unsettled destruction in large running process under super gravity field, mainly contain at present two kinds of solutions:
1, adopt vertical mounting type to replace horizontal mounting type, the centrifugal force that the deadweight of drag chain and drag chain gut line produce is like this carried by mounting plane.The defect of this mode is: though drag chain is vertically installed, can avoid long running that unsettled destruction occurs, but this mounting type takes up room greatly, this will make mechanism hand install in hanging basket space boundary situation, the stroke of mechanism hand shortens greatly, thereby reduced Robot actions space, so vertical mounting type is unsuitable for the drag chain of the mechanism hand of geotechnical centrifuge, installed.
2, drag chain supporting structure is set, the centrifugal force that drag chain overhanging portion causes is carried by supporting structure.Current known drag chain supporting structure has two kinds, i.e. roller type drag chain supporting structure and ancillary supporting device for drag chain.
Wherein, roller type drag chain supporting structure supports by the fixing pair of rollers drag chain in position.In order not interfere the movement of drag chain, roller type drag chain supporting structure can only be arranged on the inaccessiable position of drag chain crooked position, this will make drag chain in whole travel range, at least there will be four/one stroke length unsettled and cannot add support, when this drag chain for long stroke is worked under super gravity field, the centrifugal force that long unsettled drag chain produces has like this surpassed the utmost carrying ability of drag chain.
Ancillary supporting device for drag chain is patent of invention, the patent No. is " ZL201010541314.4 ", patent name is " ancillary supporting device for drag chain ", it comprises a pair of support single that pairing is used, this support single comprises that vertical setting and top are provided with the supporting base of horizontal mounting hole, and be arranged on the back shaft in described horizontal mounting hole by resetting means, wherein this back shaft comprises that original state partly leans out the supporting portion of described mounting hole, correspondingly, the supporting portion of a pair of support single is relative, supporting portion is provided with the inclined-plane of the inside receipts that extend to outside end face towards the position of drag chain bending simultaneously, and under use state, described horizontal mounting hole can hold described supporting portion completely.The major defect of this device is: though this device can be realized the drag chain crooked position in process that advancing at normal gravity field, cross over supporting portion and realize drag chain total travel and support, when drag chain retreats, crooked position is difficult to cross over supporting portion; In addition, the axial setback force in supporting portion derives from the axial thrust load that drag chain produces behind inclined-plane, supporting portion the radial compression applied of supporting portion, when this device is used for super gravity field, drag chain crooked position divides the centrifugal action of generation when supporting portion, can cause the stressed retraction in supporting portion, thereby make supporting portion misoperation and lost efficacy.
In sum, there is no at present drag chain that rational scheme solution level the installs problem of unsettled destruction in large running process under super gravity field, especially there is no mechanism hand drag chain used that rational scheme the solves geotechnical centrifuge problem of unsettled destruction in large running process under super gravity field.
Summary of the invention
Object of the present invention provides a kind of super gravity field drag chain support device that drag chain total travel is propped up to overfill protection with regard to being in order to address the above problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of super gravity field drag chain support device, comprise and drag connecting plate, fixed support, traversing carriage, pulley and tow rope, the described connecting plate that drags is for being connected with moving member, the actual direction that moves back and forth that drags connecting plate described in definition is moving direction, the first end of described traversing carriage in described moving direction is near described support bracket fastened first end, second end of described traversing carriage in described moving direction is near described support bracket fastened the second end, described traversing carriage is installed on described fixed support and can moves in described moving direction, described in being positioned at, described traversing carriage drags the below of connecting plate, the first end of described drag chain and described fixed support are all fixedly installed on the support of same level, the first end of described drag chain is near described support bracket fastened the second end, the second end of described drag chain is walked around described in being fixed on after the first end of described traversing carriage and is dragged on connecting plate, two described pulleys are installed on respectively the outside of first end and second end of described traversing carriage, described in being connected to, the first end of two described tow ropes drags on connecting plate, wherein the second end of a described tow rope is walked around the outside that is connected in described support bracket fastened the second end after the described pulley of a first end that is installed on described traversing carriage, described in another root, the second end of tow rope is walked around the outside that is connected in described support bracket fastened first end after the described pulley of second end that is installed on described traversing carriage.
In said structure, drag connecting plate for connecting drag chain and moving member, this moving member is and need to keeps the closely parts of relation with drag chain, as the mechanism hand of centrifuge, its power supply need to provide by cable, and cable is placed in drag chain and is connected with power supply unit; Fixed support is that traversing carriage provides support and moving track, makes traversing carriage can move back and forth to meet that drag chain follows that above-mentioned moving member moves closely and not unsettled or few unsettled demand; Traversing carriage is used to drag chain to provide support platform, and by drag connecting plate drive to do corresponding mobile, with guarantee drag chain in moving process all the time in supported state and can be not unsettled; Pulley and tow rope are transmission devices, a pulley and a tow rope form a set of gear unit, two cover gear units lay respectively at the both sides of traversing carriage and reversing drive each other, can guarantee that traversing carriage can be dragged all the time connecting plate band action corresponding sports in to-and-fro motion process, make traversing carriage and the moving direction that drags connecting plate keep Complete Synchronization; Meanwhile, because tow rope is walked around pulley transmission, and pulley is installed on traversing carriage, and pulley is used as movable pulley, has shortened the movement travel of traversing carriage when realizing laborsaving transmission.Because tow rope is walked around angle after pulley and is changed and be slightly less than 360 °, so the range ability of traversing carriage is slightly less than half of move distance that drags connecting plate.
For the ease of installing, described in being connected to, the first end of two described tow ropes drags the position that is positioned at described drag chain both sides on connecting plate.
As preferably, described fixed support comprises two fixed support unit that are arranged in parallel, and described drag chain is placed between two described fixed support unit; Above two described fixed support unit, guide rail is installed, described traversing carriage is installed on the slide block of guide rail.
For the ease of supporting drag chain and being convenient to drag chain, on traversing carriage, move, it is axially the crossbeam of described moving direction that described traversing carriage is provided with two, article two, between described crossbeam, be provided with a plurality ofly for supporting the roller of described drag chain, the axial direction of described roller is vertical with described moving direction.
In order to realize the accurate guiding to traversing carriage, being provided with below of described crossbeam is a plurality of for making described crossbeam be limited in the slide block on described guide rail.
Spacing better for drag chain is realized in moving process, the two ends external diameter of described roller is greater than stage casing external diameter.
Beneficial effect of the present invention is:
Super gravity field drag chain support device of the present invention is comprised of pulley and tow rope two covers and the gear unit of anti-dress has been realized traversing carriage and drag chain crooked position synchronizing moving, can guarantee whenever traversing carriage in to-and-fro motion process, all can not cause because of the external force such as frictional force of centrifugal force or drag chain the displacement of traversing carriage mistake if can being dragged all the time connecting plate band action corresponding sports; The length of traversing carriage only need drag chain stroke near half can realize overfill protection of drag chain total travel, the processing cost of having saved traversing carriage; Gear unit by the movement velocity of traversing carriage reduce to drag connecting plate near half, and pulling force has increased nearly one times, is more convenient to realize the accurate motion of traversing carriage.Super gravity field drag chain support device of the present invention efficiently solves drag chain that level the installs problem of unsettled destruction in large running process under super gravity field, is particularly useful for the support of the mechanism hand drag chain used of geotechnical centrifuge.
Accompanying drawing explanation
Fig. 1 is the stereogram of super gravity field drag chain support device of the present invention;
Fig. 2 is the stereogram of fixed support of the present invention unit;
Fig. 3 is the stereogram of traversing carriage of the present invention;
Fig. 4 is that traversing carriage of the present invention is installed the stereogram after roller;
Fig. 5 is that traversing carriage of the present invention is installed the plan view after roller;
Fig. 6 is for the stereogram of the strut of roller is installed in traversing carriage of the present invention;
Fig. 7 is the stereogram of roller of the present invention;
Fig. 8 is the stereogram of pulley of the present invention;
Fig. 9 is the stereogram that drags connecting plate of the present invention, there is shown the lower surface configuration that drags connecting plate corresponding in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, super gravity field drag chain support device of the present invention comprises and drags connecting plate 6, fixed support 1, traversing carriage 2, pulley 3 and tow rope 4, drag connecting plate 6 for the moving member (connecting object in drag chain when application, as mechanism hand of centrifuge etc., not shown) connect, the actual direction that moves back and forth that definition drags connecting plate 6 is moving direction, the first end of traversing carriage 2 in moving direction is near the first end of fixed support 1, second end of traversing carriage 2 in moving direction is near the second end of fixed support 1, traversing carriage 2 is installed on fixed support 1 and can moves in moving direction, traversing carriage 2 is positioned at the below that drags connecting plate 6, the first end of drag chain 5 and fixed support 1 are all fixedly installed on the support (parts that the application of drag chain 5 comprises or ground all can) of same level, the first end of drag chain 5 is near the second end of fixed support 1, the second end of drag chain 5 is walked around after the first end of traversing carriage 2 and is fixed on and drags on connecting plate 6, two pulleys 3 are installed on respectively the outside of first end and second end of traversing carriage 2, the first end of two tow ropes 4 is connected to and drags the position that is positioned at drag chain 5 both sides on connecting plate 6, wherein the second end of a tow rope 4 is walked around the outside that is connected in the second end of fixed support 1 after the pulley 3 of a first end that is installed on traversing carriage 2, the second end of another root tow rope 4 is walked around the outside that is connected in the first end of fixed support 1 after the pulley 3 of second end that is installed on traversing carriage 2.
Said structure is the overall structure of super gravity field drag chain support device of the present invention, particularly, and the preferred following structure of each parts:
As shown in Figure 1, Figure 2 with shown in Fig. 9, fixed support 1 comprises two fixed support unit (seeing Fig. 2) that are arranged in parallel, each fixed support unit comprises " Contraband " shape body 11, the top plate of " Contraband " shape body 11 is provided with the guide rails assembling hole 14 for mounting guide rail 7, the lower panel of " Contraband " shape body 11 is provided with the support mounting hole 13 for mounting and fixing bracket unit, the middle part vertical panel of " Contraband " shape body 11 is provided with lightening hole 15, and the two ends of " Contraband " shape body 11 are provided with the projection 12 for fixed tractive 4; Drag chain 5 is placed between two fixed support unit; Above two fixed support unit, guide rail 7 is installed, traversing carriage 2 is positioned on guide rail 7; The position that drags 5 both sides of close drag chain below of connecting plate 6 is respectively equipped with for connecting the bulge loop 61 of tow rope 4, the plate body that drags connecting plate 6 is provided with for installation circular hole 62 and the bar shaped lightening hole 63 of drag chain 5 are installed, and drags the afterbody of connecting plate 6 for being connected with moving member.
As shown in Fig. 1, Fig. 3-Fig. 8, it is axially the crossbeam 21 of moving direction that traversing carriage 2 is provided with two, article two, between crossbeam 21, be provided with the connecting rod 24 that axial direction is vertical with moving direction, article two, on crossbeam 21, be respectively equipped with a plurality of for the circular hole 25 of roller 27 is installed, article two, between crossbeam 21, the position between adjacent connecting rod 24 is provided with a plurality ofly for supporting the roller 27 of drag chain 5 by strut 26, and the axial direction of roller 27 is vertical with moving direction; Article two, the outside, two ends that crossbeam 21 is contrary is respectively equipped with for the installation shaft 23 of pulley 3 is installed, the outer end of installation shaft 23 is provided with screw thread, spacing to pulley 3 for mounting nuts (figure is unmarked), article two, being provided with for making crossbeam 21 be limited in the slide block 22 on guide rail 7 below of crossbeam 21, is provided with a plurality of slide blocks 22 on each crossbeam 21; The two ends external diameter of pulley 3 is greater than stage casing external diameter; In installation shaft 23 between pulley 3 and nut, between pulley 3 and crossbeam 21, pad (unmarked in figure) is installed; Roller 27 can be with materials processings such as teflon.
As shown in Figure 1, during work, dragging connecting plate 6, to follow moving member reciprocating in moving direction, which no matter to direction, move, drag connecting plate 6 and all can drive the first end of two tow ropes 4 to be synchronized with the movement, after pulley 3 transmissions, because the second end of tow rope 4 is fixedly connected on fixed support 1, so tow rope 4 can band movable pulleys 3 and traversing carriage 2 motions, its moving direction is with to drag connecting plate 6 consistent.In two pulleys 3, the motion of a pulley 3 is for driving the active motion of traversing carriage 2 motions, and the motion of another pulley 3 is by traversing carriage 2, to be driven the passive motion-type exercise of motion.This two pulleys 3 and the structure that traversing carriage 2 is synchronized with the movement, guarantee that traversing carriage 2 at any time all can not cause because of the external force such as frictional force of centrifugal force or drag chain 5 mistake displacement; Under the effect of pulley 3; the length of traversing carriage 2 only need drag chain 5 strokes near half can realize overfill protection of drag chain 5 total travels; the movement velocity of traversing carriage 2 be drag connecting plate 6 near half, and pulling force has increased nearly one times, is more convenient to realize the flexible motion of traversing carriage 2.
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; so long as the technological scheme that can realize on the basis of above-described embodiment without creative work all should be considered as falling within the scope of the rights protection of patent of the present invention.
Claims (7)
1. a super gravity field drag chain support device, it is characterized in that: comprise and drag connecting plate, fixed support, traversing carriage, pulley and tow rope, the described connecting plate that drags is for being connected with moving member, the actual direction that moves back and forth that drags connecting plate described in definition is moving direction, the first end of described traversing carriage in described moving direction is near described support bracket fastened first end, second end of described traversing carriage in described moving direction is near described support bracket fastened the second end, described traversing carriage is installed on described fixed support and can moves in described moving direction, described in being positioned at, described traversing carriage drags the below of connecting plate, the first end of described drag chain and described fixed support are all fixedly installed on the support of same level, the first end of described drag chain is near described support bracket fastened the second end, the second end of described drag chain is walked around described in being fixed on after the first end of described traversing carriage and is dragged on connecting plate, two described pulleys are installed on respectively the outside of first end and second end of described traversing carriage, described in being connected to, the first end of two described tow ropes drags on connecting plate, wherein the second end of a described tow rope is walked around the outside that is connected in described support bracket fastened the second end after the described pulley of a first end that is installed on described traversing carriage, described in another root, the second end of tow rope is walked around the outside that is connected in described support bracket fastened first end after the described pulley of second end that is installed on described traversing carriage.
2. super gravity field drag chain support device according to claim 1, is characterized in that: described in the first end of two described tow ropes is connected to, drag the position that is positioned at described drag chain both sides on connecting plate.
3. super gravity field drag chain support device according to claim 1 and 2, is characterized in that: described fixed support comprises two fixed support unit that are arranged in parallel, and described drag chain is placed between two described fixed support unit.
4. super gravity field drag chain support device according to claim 3, is characterized in that: above two described fixed support unit, guide rail is installed, described traversing carriage is positioned on described guide rail.
5. super gravity field drag chain support device according to claim 4, it is characterized in that: it is axially the crossbeam of described moving direction that described traversing carriage is provided with two, article two, between described crossbeam, be provided with a plurality ofly for supporting the roller of described drag chain, the axial direction of described roller is vertical with described moving direction.
6. super gravity field drag chain support device according to claim 5, is characterized in that: below described crossbeam, be provided with for a plurality of and make described crossbeam be limited in the slide block on described guide rail.
7. super gravity field drag chain support device according to claim 5, is characterized in that: the two ends external diameter of described roller is greater than stage casing external diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410204351.4A CN103953687B (en) | 2014-05-15 | 2014-05-15 | Super gravity field drag chain support device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410204351.4A CN103953687B (en) | 2014-05-15 | 2014-05-15 | Super gravity field drag chain support device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103953687A true CN103953687A (en) | 2014-07-30 |
| CN103953687B CN103953687B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410204351.4A Expired - Fee Related CN103953687B (en) | 2014-05-15 | 2014-05-15 | Super gravity field drag chain support device |
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| CN (1) | CN103953687B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451166A (en) * | 2019-07-31 | 2019-11-15 | 华晓精密工业(苏州)有限公司 | Circulation conveying structure |
| CN110537036A (en) * | 2017-04-24 | 2019-12-03 | 株式会社椿本链条 | The guiding device of bar |
| CN112496777A (en) * | 2020-11-23 | 2021-03-16 | 上海气焊机厂有限公司 | Upper drag chain device and cutting machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19634210A1 (en) * | 1995-09-05 | 1997-03-06 | Egemin Nv | Drag chain driver with seat for horizontal chain element hinge pins |
| EP1347201A2 (en) * | 2002-03-22 | 2003-09-24 | Tsubakimoto Chain Co. | Cable drag chain |
| US20080184693A1 (en) * | 2007-02-07 | 2008-08-07 | Akihiko Utaki | Cable protection and guide device |
| CN201339679Y (en) * | 2008-07-14 | 2009-11-04 | 湖南星邦重工有限公司 | Telescopic sleeve type tow chain device with mobile bracket |
| CN201843939U (en) * | 2010-11-12 | 2011-05-25 | 济南二机床集团有限公司 | Auxiliary support device for drag chain |
| CN203384296U (en) * | 2013-07-30 | 2014-01-08 | 杭州萧山佳吉机械配件厂 | Annular supporting system applied to drag chain |
| CN203809604U (en) * | 2014-05-15 | 2014-09-03 | 中国工程物理研究院总体工程研究所 | High-gravity-field drag chain supporting device |
-
2014
- 2014-05-15 CN CN201410204351.4A patent/CN103953687B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19634210A1 (en) * | 1995-09-05 | 1997-03-06 | Egemin Nv | Drag chain driver with seat for horizontal chain element hinge pins |
| EP1347201A2 (en) * | 2002-03-22 | 2003-09-24 | Tsubakimoto Chain Co. | Cable drag chain |
| US20080184693A1 (en) * | 2007-02-07 | 2008-08-07 | Akihiko Utaki | Cable protection and guide device |
| CN201339679Y (en) * | 2008-07-14 | 2009-11-04 | 湖南星邦重工有限公司 | Telescopic sleeve type tow chain device with mobile bracket |
| CN201843939U (en) * | 2010-11-12 | 2011-05-25 | 济南二机床集团有限公司 | Auxiliary support device for drag chain |
| CN203384296U (en) * | 2013-07-30 | 2014-01-08 | 杭州萧山佳吉机械配件厂 | Annular supporting system applied to drag chain |
| CN203809604U (en) * | 2014-05-15 | 2014-09-03 | 中国工程物理研究院总体工程研究所 | High-gravity-field drag chain supporting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110537036A (en) * | 2017-04-24 | 2019-12-03 | 株式会社椿本链条 | The guiding device of bar |
| CN110451166A (en) * | 2019-07-31 | 2019-11-15 | 华晓精密工业(苏州)有限公司 | Circulation conveying structure |
| CN110451166B (en) * | 2019-07-31 | 2024-04-09 | 华晓精密工业(苏州)有限公司 | Circulation conveying structure |
| CN112496777A (en) * | 2020-11-23 | 2021-03-16 | 上海气焊机厂有限公司 | Upper drag chain device and cutting machine |
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| Publication number | Publication date |
|---|---|
| CN103953687B (en) | 2015-09-16 |
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Granted publication date: 20150916 Termination date: 20200515 |