CN104495688A - Automatic lifting platform applied to motor homes - Google Patents
Automatic lifting platform applied to motor homes Download PDFInfo
- Publication number
- CN104495688A CN104495688A CN201410829787.2A CN201410829787A CN104495688A CN 104495688 A CN104495688 A CN 104495688A CN 201410829787 A CN201410829787 A CN 201410829787A CN 104495688 A CN104495688 A CN 104495688A
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- China
- Prior art keywords
- inner sleeve
- block
- leading screw
- cover plate
- outer tube
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
- B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses an automatic lifting platform applied to motor homes. The automatic lifting platform comprises a screw rod fixed to a lifting platform supporting part, an inner casing pipe and an outer casing pipe which sequentially cover the screw rod, wherein the outer casing pipe is only driven to rotate by an external power source; the screw rod is fixed to the supporting part, is incapable of rotating and is only capable of moving in the height direction; the inner casing pipe rotates and moves in the height direction; the screw rod, the inner casing pipe and the outer casing pipe respectively are driven by respective threads; a cover plate I is arranged at the top end of the outer casing pipe; a through hole I with inner threads is formed in the center of the cover plate I; the inner casing pipe is in threaded connection with the through hole I; a baffle disc is arranged on the bottom end of the inner casing pipe; the outer diameter of the baffle disc is greater than that of the inner casing pipe; the baffle disc is in threaded connection with the outer casing pipe; a cover plate II in threaded connection with the screw rod is arranged at the top end of the inner casing pipe; a through hole II with inner threads is formed in the center of the cover plate; the screw rod is in threaded connection with the through hole II; a cover plate III is arranged at the bottom end of the outer casing pipe; the cover plate III is provided with a groove with a diameter which is slightly smaller than the inner diameter of the outer casing pipe and slightly greater than the diameter of the baffle disc.
Description
Technical field
The present invention relates to a kind of caravan with from bay-lift.Relate to Patent classificating number B66 elevator; Promote; Traction B66F is not included in elevator in other classifications, lifting, traction or promotion, if the device B66F3/00 that hoisting force or propelling thrust directly acted on load surface is for the device of lifting load continuously, as jack B66F3/08 spiral is handled.
Background technology
Along with the development of caravan industry, require also to improve constantly to the quality of caravan and multifunction, to the requirement also corresponding raising of caravan inner facility, the proposition of self-raising platform contributes to the automatization level improving whole caravan, improves the quality of caravan.
At present, common jacking system has pneumatic type, fluid pressure type, steel wire rope type etc., and air lifter load-carrying capacity is low, stable poor, and will have air power source; Hydraulic efficiency elevation structure requirement on machining accuracy is high, low operating temperatures poor performance; Steel rope lifting mechanism complex structure, not easily joint number is too much, therefore shrinks and is highly restricted; Although truss-like, subrack and large but its deadweight of collapsible carrying and volume also very large.
Summary of the invention
The present invention is directed to the proposition of above problem, the present invention proposes a kind of caravan self-raising platform, comprising: with the leading screw that bay-lift support portion is fixing, wrap up inner sleeve and the outer tube of leading screw successively; Outer tube only rotates under the drive of external power supply, and leading screw and support portion are fixed, self non rotating, the motion only in generation short transverse, and inner sleeve had not only rotated but also occurred the motion of short transverse.
Described leading screw, inner sleeve and outer tube carry out transmission respectively by respective screw thread, and in order to meet screw-driven relation, each parts concrete form is as follows:
The top of described outer tube has a cover plate I, and the central authorities of this cover plate I have the female through hole I of a band, described inner sleeve and this through hole I thread connection; The bottom of described outer tube has a cover plate III, and this cover plate III is provided with groove, and its diameter is slightly less than outer tube internal diameter and slightly larger than block plate diameter.
The bottom of described inner sleeve is provided with a block plate, and the external diameter of this block plate is greater than the external diameter of inner sleeve; The top of described inner sleeve is provided with a cover plate II connected with described threads of lead screw, and the central authorities of this cover plate have the female through hole II of a band, described leading screw and this through hole II thread connection.
Described block plate is provided with a unidirectional inhibiting device I, and this device comprises the briquetting I being positioned at inner sleeve side-wall outer side and the unidirectional limiting stopper I being positioned at inner sleeve inside sidewalls, and described briquetting and unidirectional limiting stopper I link.
The cover plate II of described inner sleeve is provided with unidirectional inhibiting device II, this device comprises the briquetting II be positioned at above outer tube cover plate II and the unidirectional limiting stopper II be positioned at below described cover plate II, and this unidirectional limiting stopper II and leading screw lower end block are on same rotation round.
Described leading screw bottom has one and stop the block that inner sleeve rotates in rising and decline process.
When bay-lift rises by complete contraction state: outer tube starts rotation under the effect of external power supply, and start to affect inner sleeve by the screw thread of its inwall, now, inner sleeve starts the trend having rotation, but, unidirectional position limiting slide block I effect on block below described leading screw and described supporting disk, limit described inner sleeve and rotate, inner sleeve starts upward movement under the effect of outer tube negative thread.
When the block plate of described inner sleeve is close to outer tube cover plate I, briquetting I on cover plate I compressing (being produced by supporting disk motion upwards) supporting disk, the unidirectional limiting stopper I linked with briquetting I and briquetting I enters the headspace I in block plate, and namely the block of leading screw bottom no longer includes restriction.Now, leading screw no longer limits inner sleeve and rotates, and inner sleeve rotates under the threaded function of outer tube, and leading screw starts to rise under the effect of inner sleeve screw thread.
When the block of leading screw arrives inner sleeve top, uphill process terminates, in this process, unidirectional limiting stopper II does not produce effect to described block (block of unidirectional limiting stopper II to leading screw does not produce effect in uphill process, to described block generation effect in decline process), cut off external power supply.
When being declined by complete elongation state, outer tube is (contrary with ascent direction) rotation round about under the effect of external power supply, leading screw stops inner sleeve to rotate under the turning effort of outer tube by the effect of block and unidirectional limiting stopper II, inner sleeve starts to decline together with leading screw, in this process, the relative height of inner sleeve and leading screw is fixed, and does not change.When block plate is close to outer tube bottom surface, briquetting II (outer ledge of briquetting is positioned at the outside of inner sleeve sidewall) in unidirectional inhibiting device II described in the cover plate I lifting of outer tube, with the unidirectional limiting stopper II upwards lifting of its interlock, enter in the headspace II in cover plate II, inner sleeve loses the restriction that leading screw rotates it, and beginning and outer tube together rotate, and now leading screw starts to decline under the threaded function of inner sleeve, until take in inner sleeve completely, complete contraction process.
Further, consider, be easy to wearing and tearing owing to transmitting screw thread when bay-lift works, if inner outer sleeve bottom friction comes locked, long-time use double thread degree of wear is relatively serious, pretends as preferred embodiment, and the lower end of outer tube is provided with the groove that an external diameter is less than outer tube internal diameter; Described block plate has unidirectional locking mechanism, and block plate declines when entering in described groove, relatively rotating of unidirectional locking mechanism restriction inner sleeve and outer tube, after locked, inner sleeve under the effect of screw thread with outer tube rotating Vortex.
As preferred embodiment, described unidirectional locking mechanism comprises: be multiplely positioned at the outer peripheral wedge-shaped indentation of described supporting disk, the deep-slotted chip breaker of a ball and support ball is provided with in wedge-shaped indentation, this deep-slotted chip breaker can ensure that inner sleeve is in decline process, ball can roll all the time in deep-slotted chip breaker, do not come in contact with the inwall of outer tube that (external diameter due to block plate is greater than inner sleeve external diameter, namely space is had between inner sleeve outer wall and outer sleeve inner wall), generation friction that can not be too early causes block plate just too early locked before entering groove.
When block plate drops to described trench bottom, the inwall that groove is less relative to outer sleeve inner wall diameter and ball rub, and and groove bottom wall combined action, drive described ball to the narrow end motion of wedge-shaped indentation, until locked block plate.
As preferred embodiment, described unidirectional limiting stopper I comprises inclined-plane and the facade vertical with supporting disk; In described leading screw uphill process, the block of leading screw lower end and the contact of incline plane of unidirectional limiting stopper I, this inclined-plane, under the effect of block, in indentation headspace I, does not have an impact to the rotation of inner sleeve.
As preferred embodiment, described unidirectional limiting stopper II comprises inclined-plane and the facade vertical with cover plate; In described leading screw decline process, the block of leading screw lower end and the contact of incline plane of unidirectional limiting stopper II, this inclined-plane, under the effect of block, in indentation headspace I, does not have an impact to the rotation of inner sleeve.
Accompanying drawing explanation
In order to the technical scheme of clearer explanation embodiments of the invention or prior art, introduce doing one to the accompanying drawing used required in embodiment or description of the prior art simply below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The present invention has 4 width accompanying drawings, wherein:
Accompanying drawing 1 self-raising platform general arrangement
Accompanying drawing 2 inner sleeve and unidirectional inhibiting device II structural representation
Accompanying drawing 3 block plate and unidirectional inhibiting device I structural representation
Accompanying drawing 4 screw structure schematic diagram
Detailed description of the invention
For making the object of embodiments of the invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, clear complete description is carried out to the technical scheme in the embodiment of the present invention:
Embodiment 1, as Figure 1-4:
A kind of caravan, with from bay-lift, mainly comprises: leading screw 1, and the inner sleeve 2 of parcel leading screw 1 and the outer tube 3 of parcel inner sleeve 1, the top of leading screw I is provided with bay-lift bearing surface 6, the base frame 8 of bay-lift bottom, and the side of bay-lift is provided with sleeve 7.
The push pipe of described outer tube 3 is the cover plate I31 of with outer tube 3 sidewall one-body molded (also can be arranged to separable joint according to actual conditions), the central authorities of this cover plate I31 have the female through hole I32 of a band, described inner sleeve 2 and this through hole I32 thread connection.
The bottom of described inner sleeve 2 is provided with a block plate 21, and the external diameter of this block plate 21 is greater than the external diameter of inner sleeve 2, ensures to there is certain space between inner sleeve 2 and outer tube 3.The top of described inner sleeve 2 is provided with cover plate II32, has the female through hole II33 of a band with the central authorities of cover plate I31 this cover plate similar II32 of outer tube 3, described leading screw 1 and this through hole II33 thread connection and transmission.
Block plate 21 is provided with a unidirectional inhibiting device I22, under being included in unforced state, lay respectively at the briquetting I23 of inner sleeve 2 side-wall outer side and be positioned at the unidirectional limiting stopper I24 of inner sleeve inside sidewalls, described briquetting I23 is connected by a connecting rod I25 with unidirectional limiting stopper I, as shown in Figure 3, unidirectional limiting stopper I 24 comprises an inclined-plane and facade, briquetting I23 is cylinder, be provided with in the position of the correspondence of supporting disk 21 and unidirectional limiting stopper I24, the headspace I26 that the orthogonal projection matching form of connecting rod I25 and briquetting I23 on supporting disk 21 closes, simultaneously, connecting rod I25, be connected with the bottom surface of headspace I26 by a spring I27, for whole unidirectional inhibiting device I22 provides the screen resilience after suffering oppression, compressing comprises the pressure that briquetting I23 receives, and unidirectional limiting stopper I inclined-plane receives the pressing force of leading screw 1 block 11 effect generation.Fixed plate 28 is also provided with, limiting rod I25 actuation range above headspace I26.
When the block 11 of leading screw 1 bottom rotates forward by Fig. 3, with the ramp effect of unidirectional limiting stopper I24, namely the obstruction to leading screw 1 rotation relative to inner sleeve 2 is not produced, when leading screw 1 carries out the reversion of position as shown in Figure 3, the block 11 of unidirectional limiting stopper I24 and leading screw 1 bottom acts on, and hinders the relative rotation of leading screw 1 and inner sleeve 2.
Described block plate 21 is also provided with centrosymmetric 4 wedge-shaped indentation 41, and the bottom surface of wedge-shaped indentation 41 (be a plane with block plate 21 bottom surface) is provided with deep-slotted chip breaker 42, and ball 43 rolls on deep-slotted chip breaker 42.
As shown in Figure 2: cover plate II32 is provided with described unidirectional inhibiting device II34, with the similar of unidirectional limiting stopper I, comprise the unidirectional limiting stopper II36 being positioned at briquetting II35 outside cover plate II32 and inner side, unidirectional limiting stopper II36 is under unforced state, stretch out cover plate II, be positioned at the below of cover plate II32; Briquetting II35, under unforced state, exceeds the upper surface of cover plate II32, and the edge of briquetting II35 exceeds inner sleeve 2 outer wall simultaneously, and unidirectional limiting stopper II36 is connected by connecting rod II37 with briquetting II35, and connecting rod II37 is connected with pressure plates II 38 by spring.
The bottom of outer tube 3 is provided with groove 5, is provided with finishing bevel gear cuter I51 in the below of groove 5, and this finishing bevel gear cuter I51 is driven by a horizontal finishing bevel gear cuter II52.
Under setting contraction state, leading screw 1 takes in inner sleeve 2 completely, and inner sleeve 2 takes in outer tube 3 completely.When uphill process starts, first finishing bevel gear cuter II52 makes outer tube 3 rotate forward by finishing bevel gear cuter I51, and now, the unidirectional limiting stopper I24 on block plate 21 is subject to the effect of leading screw 1 bottom block 11, locked between inner sleeve 2 and leading screw 1, relative motion does not occur.Inner sleeve 2 rises under rotation threaded function.When inner sleeve 2 rises to the cover plate I31 close to outer tube 3, briquetting I23 suffers oppression in indentation headspace, with the unidirectional limiting stopper I24 of its interlock also indentation headspace, now, restriction between leading screw 1 and inner sleeve 2 disappears, and leading screw 1 starts to rotate following outer tube 3.Leading screw 1 starts to rise to end position under the effect rotating screw thread, and now the inclined-plane of unidirectional limiting stopper II36 is in the face of the block 11 of leading screw 1, the not rotation of limit stop 11 and leading screw 1.
When starting to shrink, finishing bevel gear cuter II52 drives outer tube 3 to reverse by finishing bevel gear cuter I51, the facade of the unidirectional limiting stopper II36 of inner sleeve 2 cover plate II32 is in the face of block 11, hinder relatively rotating of leading screw 1 and inner sleeve 2, namely the rotation of inner sleeve 2 self is hindered, inner sleeve 2 starts to decline under the effect of screw thread rotation, and when inner sleeve 2 drops to bottom described groove 5, block plate 21 is locked.Simultaneously, briquetting II35 is subject to the lifting of cover plate I31, the unidirectional limiting stopper II36 linked is caused to take in headspace, namely the restriction of inner sleeve 2 rotation disappears, inner sleeve 2 starts to follow outer tube 3 under the effect rotating screw thread and carries out synchronous rotation, leading screw 1 declines under the effect rotating screw thread (leading screw 1 is fixed, and rotation does not occur all the time).
The above; be only the present invention's preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (5)
1. a caravan self-raising platform, is characterized in that comprising: with the leading screw that bay-lift support portion is fixing, wrap up inner sleeve and the outer tube of leading screw successively;
The top of described outer tube has a cover plate I, and the central authorities of this cover plate I have the female through hole I of a band, described inner sleeve and this through hole I thread connection;
The bottom of described inner sleeve is provided with a block plate, and the external diameter of this block plate is greater than the external diameter of inner sleeve, and block plate and outer sleeve inner wall leave certain interval; The top of described inner sleeve is provided with a cover plate II connected with described threads of lead screw, and the central authorities of this cover plate have the female through hole II of a band, described leading screw and this through hole II thread connection;
Described block plate is provided with a unidirectional inhibiting device I, and this device comprises the briquetting I being positioned at inner sleeve side-wall outer side and the unidirectional limiting stopper I being positioned at inner sleeve inside sidewalls, and described briquetting I and unidirectional limiting stopper I links;
The cover plate II of described inner sleeve is provided with unidirectional inhibiting device II, and this device comprises the briquetting II be positioned on inner sleeve cover plate II outer wall and the unidirectional limiting stopper II be positioned at below described cover plate II, and described briquetting II and unidirectional limiting stopper II links;
Described leading screw bottom has a block, and this block and unidirectional limiting stopper II are positioned on same rotation round;
When bay-lift is risen by complete contraction state: the block below described leading screw and the unidirectional position limiting slide block I effect on described block plate, limit the rotation of described inner sleeve, inner sleeve together rises with leading screw under the effect of outer tube negative thread;
When the block plate of described inner sleeve is close to outer tube cover plate I, cover plate I oppresses the briquetting I on block plate, and the unidirectional limiting stopper I linked with briquetting I and briquetting I enters the headspace I in block plate; Now, leading screw no longer limits inner sleeve and rotates, and inner sleeve rotates under the threaded function of outer tube, and leading screw starts to depart from inner sleeve and rises under inner sleeve threaded function;
When the block of leading screw arrives inner sleeve top, uphill process terminates, and in this process, unidirectional limiting stopper II does not produce barrier effect to described block;
When decline process starts, outer tube rotates round about, and leading screw is rotated under the turning effort of outer tube by the barrier effect prevention inner sleeve of block by unidirectional limiting stopper II (facade), and inner sleeve starts to decline together with leading screw; When block plate is close to outer tube bottom surface, the briquetting II described in cover plate I lifting of outer tube, with the unidirectional limiting stopper II upwards lifting of its interlock, enter in the headspace II in cover plate II, when block plate is locked by the lid panel notches of outer sleeve bottom, meanwhile, inner sleeve loses the restriction that leading screw rotates it, and rotate together with starting with outer tube under the effect of outer tube, now leading screw starts to decline, until take in inner sleeve completely under the threaded function of inner sleeve.
2. caravan self-raising platform according to claim 1, is further characterized in that the cover plate III of described outer tube lower end is provided with a diameter and is less than outer tube internal diameter and slightly larger than the groove of block plate; Described block plate has unidirectional locking mechanism, and block plate declines when entering in described groove, relatively rotating of unidirectional locking mechanism restriction inner sleeve and outer tube, after locked, inner sleeve under the effect of screw thread with outer tube rotating Vortex.
3. caravan self elevating platform according to claim 2, is further characterized in that described unidirectional locking mechanism comprises: be multiplely positioned at the outer peripheral wedge-shaped indentation of described block plate, is provided with the deep-slotted chip breaker of a ball and support ball in wedge-shaped indentation;
When block plate drops in described groove, under the inwall of groove and the combined action of diapire, drive described ball to the narrow end motion of wedge-shaped indentation, locked block plate.
4. caravan automatic rising-sinking platform according to claim 1, is further characterized in that: described unidirectional limiting stopper I comprises inclined-plane and the facade vertical with supporting disk; In described leading screw uphill process, the block of leading screw lower end and the contact of incline plane of unidirectional limiting stopper I, this inclined-plane, under the effect of block, in indentation headspace I, does not have an impact to the rotation of inner sleeve.
5. caravan automatic rising-sinking platform according to claim 1, is further characterized in that: described unidirectional limiting stopper II comprises inclined-plane and the facade vertical with cover plate; In described leading screw decline process, the block of leading screw lower end and the contact of incline plane of unidirectional limiting stopper II, this inclined-plane, under the effect of block, in indentation headspace I, does not have an impact to the rotation of inner sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410829787.2A CN104495688B (en) | 2014-12-26 | 2014-12-26 | Caravan automatic rising-sinking platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410829787.2A CN104495688B (en) | 2014-12-26 | 2014-12-26 | Caravan automatic rising-sinking platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104495688A true CN104495688A (en) | 2015-04-08 |
| CN104495688B CN104495688B (en) | 2018-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410829787.2A Expired - Fee Related CN104495688B (en) | 2014-12-26 | 2014-12-26 | Caravan automatic rising-sinking platform |
Country Status (1)
| Country | Link |
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| CN (1) | CN104495688B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152050A (en) * | 2015-09-11 | 2015-12-16 | 方新刚 | Shock-absorbing large construction stone lifting device |
| CN105152049A (en) * | 2015-09-11 | 2015-12-16 | 夏雨 | Construction engineering lifting device powered by solar energy and provided with LED lamp |
| CN107522136A (en) * | 2017-09-03 | 2017-12-29 | 李保龙 | A kind of railroad bridge construction lowering or hoisting gear |
| CN111532656A (en) * | 2020-04-30 | 2020-08-14 | 广东工业大学 | Single-power-source lifting and rotating device for production line and production line conveyor belt |
| CN113023617A (en) * | 2021-03-04 | 2021-06-25 | 安徽同方工程咨询有限公司 | Water conservancy environmental protection decontamination system |
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| US1927598A (en) * | 1931-04-02 | 1933-09-19 | Schlichter Oscar | Portable elevating table |
| US5709286A (en) * | 1996-05-13 | 1998-01-20 | Joyce/Dayton Corp. | Mechanical replacement for hydraulic in-ground vehicle lift |
| JP2003285994A (en) * | 2002-03-28 | 2003-10-07 | Hirata Corp | Elevating apparatus |
| CN101734575A (en) * | 2009-12-17 | 2010-06-16 | 中国航天科技集团公司第五研究院第五一○研究所 | Design method of three-level lead screw linkage mechanical platform lifting |
| CN202099010U (en) * | 2011-06-13 | 2012-01-04 | 无锡帝凡精工机械有限公司 | Screw lifting mechanism and automatic lifting platform |
| CN102745620A (en) * | 2012-07-03 | 2012-10-24 | 江苏永钢集团有限公司 | Manual liftable saddle |
| CN204549949U (en) * | 2014-12-26 | 2015-08-12 | 大连理工大学 | Caravan self-raising platform |
-
2014
- 2014-12-26 CN CN201410829787.2A patent/CN104495688B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1927598A (en) * | 1931-04-02 | 1933-09-19 | Schlichter Oscar | Portable elevating table |
| US5709286A (en) * | 1996-05-13 | 1998-01-20 | Joyce/Dayton Corp. | Mechanical replacement for hydraulic in-ground vehicle lift |
| JP2003285994A (en) * | 2002-03-28 | 2003-10-07 | Hirata Corp | Elevating apparatus |
| CN101734575A (en) * | 2009-12-17 | 2010-06-16 | 中国航天科技集团公司第五研究院第五一○研究所 | Design method of three-level lead screw linkage mechanical platform lifting |
| CN202099010U (en) * | 2011-06-13 | 2012-01-04 | 无锡帝凡精工机械有限公司 | Screw lifting mechanism and automatic lifting platform |
| CN102745620A (en) * | 2012-07-03 | 2012-10-24 | 江苏永钢集团有限公司 | Manual liftable saddle |
| CN204549949U (en) * | 2014-12-26 | 2015-08-12 | 大连理工大学 | Caravan self-raising platform |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105152050A (en) * | 2015-09-11 | 2015-12-16 | 方新刚 | Shock-absorbing large construction stone lifting device |
| CN105152049A (en) * | 2015-09-11 | 2015-12-16 | 夏雨 | Construction engineering lifting device powered by solar energy and provided with LED lamp |
| CN107522136A (en) * | 2017-09-03 | 2017-12-29 | 李保龙 | A kind of railroad bridge construction lowering or hoisting gear |
| CN111532656A (en) * | 2020-04-30 | 2020-08-14 | 广东工业大学 | Single-power-source lifting and rotating device for production line and production line conveyor belt |
| CN113023617A (en) * | 2021-03-04 | 2021-06-25 | 安徽同方工程咨询有限公司 | Water conservancy environmental protection decontamination system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104495688B (en) | 2018-01-09 |
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