CN101712446B - Locking device for scissor-type hydraulic lifting platform - Google Patents
Locking device for scissor-type hydraulic lifting platform Download PDFInfo
- Publication number
- CN101712446B CN101712446B CN2009102192931A CN200910219293A CN101712446B CN 101712446 B CN101712446 B CN 101712446B CN 2009102192931 A CN2009102192931 A CN 2009102192931A CN 200910219293 A CN200910219293 A CN 200910219293A CN 101712446 B CN101712446 B CN 101712446B
- Authority
- CN
- China
- Prior art keywords
- leading screw
- pitman shaft
- lifting support
- platform
- hydraulic
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a locking device for a scissor-type hydraulic lifting platform. A reducer (2) is connected with a screw rod (11) through a coupling (4); the middle part of the screw rod (11) passes through a connecting rod shaft (10) of a lifting support (13); a square locking nut (8) is sleeved on the screw rod (11) and is positioned on one side of the connecting rod shaft (10); the square locking nut (8) is arranged on a flat plate (7) which is fixed on a platform (15) of the lifting support (13) and is used for preventing the locking nut (8) from rotating and making the locking nut (8) axially linearly move under the driving of the screw rod (11); and one end of the screw rod (11) close to the reducer (2) is provided with a thrust bearing (6). The locking device realizes mechanical self-locking in a hydraulic lifting system, is particularly suitable for places with heavy load and requiring long-time locking, can effectively overcome the defect that a hydraulic element cannot realize long-time self-locking under heavy load in the prior art, protects the hydraulic element and guarantees simple, convenient, safe and reliable operation.
Description
Technical field
The present invention relates to a kind of parts of jacking system, specifically a kind of latching device of fork hydraulic lifting platform.
Background technology
Fork hydraulic lifting platform is a kind of up-down good stability, goods lifting equipment applied widely.This platform relies on hydraulic actuating cylinder, hydraulic lock generally can realize the aerial stop of short time; To carry out general aerial work; But for the heavy duty more than 5 tons; Require a couple of days even tens of days to keep aerial self-locking, do not allow the working condition of height change after the self-locking, general fork hydraulic lifting platform can not be realized long self-locking owing to reason such as letting out in hydraulic actuating cylinder, the hydraulic lock.
Summary of the invention
Can not under heavy duty, realize the deficiency of long-time self-locking in order to overcome the Hydraulic Elements that exist in the prior art; Perhaps, the present invention proposes a kind of latching device of fork hydraulic lifting platform for fear of using Hydraulic Elements to carry out the heavy duty situation of long-term self-locking down.
The present invention includes HM Hydraulic Motor, reductor, leading screw, jam nut and pitman shaft axle system.Wherein: the HM Hydraulic Motor direct connection is in reductor, and reductor is installed in the driving pedestal with bolt, drives pedestal through being bolted to lifting support bottom platform one end.Reductor is connected with leading screw through coupler; The pitman shaft of lifting support is passed at the leading screw middle part via leading screw guiding cover; On the square jam nut suit leading screw, and be located at pitman shaft one side.Square jam nut places on the flat board; The dull and stereotyped screw retention of passing through is used to prevent the jam nut rotation on the platform of lifting support, the assurance jam nut is only done axial straight line and moved when the driving that receives leading screw.Leading screw is equipped with thrust baring near reductor one end, and thrust baring is installed on the bearing seat.The leading screw other end is equipped with the ball-bearing casing of usheing to seat.Usher to seat ball-bearing casing, bearing seat, driving pedestal all through screw retention on the lifting support bottom platform.
Pitman shaft axle system comprises pitman shaft, spindle nose, roller, spring cotter, square tube and lifting support.
The square rod end of two spindle noses is inserted in the square hole at hollow square tube two ends respectively and welding fixing, formed pitman shaft; The circular hole that perforation is arranged at the middle part of pitman shaft, the internal diameter of this circular hole is with the external diameter of leading screw guiding cover.The circular rod end of spindle nose penetrates in the hole on the lifting support; Roller housing is contained in the circular pin termination of two spindle noses, and fixes through spring cotter; Roller is positioned at guide rail, and along guide rail movement, thereby make lifting support when going up and down, pitman shaft along continuous straight runs under the drive of roller is traversing.The circular pin part of the spindle nose at pitman shaft two ends and an end circular hole transition fit of lifting support.
Leading screw guiding cover is circular pipe fitting, and its length is with the length of side of pitman shaft; Leading screw guiding cover is installed in through interference fit in the circular hole at pitman shaft middle part, when the pitman shaft along continuous straight runs is traversing, through with the effect of leading screw, realize the traversing of pitman shaft.
HM Hydraulic Motor, reductor are connected with leading screw through coupler.Leading screw is guided cover through leading screw and is linked to each other with pitman shaft, and pitman shaft outside retaining has square jam nut, base platform to prevent the nut rotation, and the assurance jam nut is only done axial straight line and moved when the driving that receives leading screw.When elevator will rise, at first platform is increased to desired location, not pressure release of hydraulic actuating cylinder by lifting hydraulic cylinder; Keep podium level, primer fluid pressure motor then, HM Hydraulic Motor just changes; Drive speed reducer drives leading screw and rotates, and leading screw rotating band moving lock jack panel inwardly slides on flat board, and jam nut arrives the pitman shaft position of elevator; HM Hydraulic Motor stops operating, the hydraulic efficiency pressure system pressure release, and elevator just can be mechanical locked at this height.
When elevator need drop to extreme lower position, at first start lifting hydraulic cylinder, make lifting hydraulic cylinder bear flat-bed load; Primer fluid pressure motor then, the HM Hydraulic Motor counter-rotating, drive speed reducer drives leading screw and rotates; And then the drive jam nut outwards slides on flat board; Jam nut arrives outermost locations, by lifting hydraulic cylinder platform is dropped to extreme lower position afterwards, accomplishes down maneuver.
When elevator need drop to a certain low level, at first start lifting hydraulic cylinder, make lifting hydraulic cylinder bear flat-bed load, then the primer fluid pressure motor; The HM Hydraulic Motor counter-rotating, drive speed reducer drives leading screw and rotates, and then the drive jam nut outwards slides jam nut arrival outermost locations on flat board; By lifting hydraulic cylinder platform is dropped to desired location afterwards, primer fluid pressure motor then, HM Hydraulic Motor just changes; Drive speed reducer drives leading screw and rotates, and then the drive jam nut inwardly slides the pitman shaft position of jam nut arrival elevator on flat board; HM Hydraulic Motor stops operating, the hydraulic efficiency pressure system pressure release, and elevator just can be mechanical locked at this height.
This invention is installed No. one HM Hydraulic Motor additional and is propped up oil circuit on the basis of the original hydraulic lifting system working connection of fork hydraulic lifting platform; Mechanism drives to mechanical interlocking; Realized the mechanical self-latching in hydraulic lifting system; Be particularly suitable for heavy duty and need long-time field of employment of locking, can effectively overcome the Hydraulic Elements that exist in the prior art can not be realized long-time self-locking under heavy duty deficiency.Both protected Hydraulic Elements, and made simple to operationly, safe and reliable again, the present invention is suitable for the self-locking of any lift height position of one deck and multilayer fork hydraulic lifting platform, is particularly suitable for the fork hydraulic lifting platform of heavy duty, long-time self-locking.
Description of drawings
Accompanying drawing 1 is the structural representation of hydraulic elevating platform of the present invention mechanical self-latching when being in any lift height.
Accompanying drawing 2 is birds-eye vieies of accompanying drawing 1.
Accompanying drawing 3 is A-A cutaway views of accompanying drawing 2, mainly representes the formation of mechanical locking device.
Accompanying drawing 4 is C-C cutaway views of accompanying drawing 2, mainly representes the formation of pitman shaft axle system.
Accompanying drawing 5 is structural representations of pitman shaft spindle nose.
Accompanying drawing 6 is left views of accompanying drawing 5.
Accompanying drawing 7 is D-D cutaway views of accompanying drawing 6.
Accompanying drawing 8 is B-B cutaway views of accompanying drawing 4.
Accompanying drawing 9 is structural representations of jam nut.
Accompanying drawing 10 is E-E cutaway views of accompanying drawing 9.Wherein:
1. HM Hydraulic Motor 2. reductors 3. drive pedestal 4. coupler 5. bearing seats
6. 10. pitman shafts are overlapped in thrust baring 7. dull and stereotyped 8. jam nuts, 9. leading screws guidings
11. 12. ball-bearing casings of leading screw, 13. lifting supports, 14. hydraulic actuating cylinders, 15. bottom platform
16. guide rail 17. spring cotters 18. rollers 19. spindle noses 20. square tubes
The specific embodiment
Present embodiment comprises HM Hydraulic Motor 1, reductor 2, leading screw 11, jam nut 8 and pitman shaft axle system.
Like Fig. 1, Fig. 2, Fig. 3, shown in Figure 4.HM Hydraulic Motor 1 direct connection is in reductor 2, and reductor 2 usefulness bolts are installed in and drive pedestal 3, drive pedestal 3 through being bolted to lifting support bottom platform 15 1 ends.Reductor 2 is connected with leading screw 11 through coupler 4; The pitman shaft 10 of lifting support 13 is passed at leading screw 11 middle parts via leading screw guiding cover 9; On the square jam nut 8 suit leading screws 11, and be located at pitman shaft 10 1 sides.Square jam nut 8 places on dull and stereotyped 7; Dull and stereotyped 7 pass through screw retention on the platform 15 of lifting support.When leading screw 11 rotation and when driving jam nut 8 and doing corresponding rotation, because the restriction at jam nut 8 square angles has prevented the rotation of jam nut 8, thereby assurance jam nut 8 is only done axial straight line and is moved when receiving the driving of leading screw 11.Leading screw 11 is equipped with thrust baring 6 near reductor 2 one ends, and thrust baring 6 is installed on the bearing seat 5.Leading screw 11 other ends are equipped with the ball-bearing casing 12 of usheing to seat.Usher to seat ball-bearing casing 12, bearing seat 5, drive pedestal 3 all through screw retention on lifting support bottom platform 15.
Shown in figure 11, dull and stereotyped 7 is the rectangle plate.At dull and stereotyped 7 four jiaos unthreaded holes that have with lifting support bottom platform 15 assembling usefulness.
Pitman shaft axle system comprises pitman shaft 10, spindle nose 19, roller 18, spring cotter 17, square tube 20 and lifting support 13.
Like Fig. 5～shown in Figure 8.Two spindle noses 19 are the identical rod member of structure, and an end of spindle nose 19 is the stair-stepping circular pin that external diameter increases one by one, and the other end of spindle nose 19 is stair-stepping square pole.The little external diameter of spindle nose 19 circular rod ends is with the diameter of roller 18 endoporus, and the big external diameter of spindle nose 19 circular rod ends is with the diameter of lifting support 13 endoporus.The length of side of the square pole of the different length of sides of spindle nose 19 other ends is respectively with the interior length of side and the outer length of side of hollow square tube 20.There is pin-and-hole spindle nose 19 circular pin ends.
As shown in Figure 4.The square rod end of two spindle noses 19 is inserted in the square hole at hollow square tube 20 two ends respectively and welding fixing, formed pitman shaft 10; The circular hole that perforation is arranged at the middle part of pitman shaft 10, the internal diameter of this circular hole is with the external diameter of leading screw guiding cover 9.The circular rod end of spindle nose 19 penetrates in the hole on the lifting support 13; Roller 18 is sleeved on the circular pin termination of two spindle noses 19, and fixing through spring cotter 17; Roller 18 is positioned at guide rail 16, and moves along guide rail 16, thereby makes lifting support 13 when going up and down, and pitman shaft 10 along continuous straight runs under the drive of roller 18 is traversing.The circular pin part of the spindle nose 19 at pitman shaft 10 two ends and an end circular hole transition fit of lifting support 13.
Like Fig. 3, shown in Figure 4.Leading screw guiding cover 9 is circular pipe fitting, and its length is with the length of side of pitman shaft 10; Leading screw guiding cover 9 is installed in the circular hole at pitman shaft 10 middle parts through interference fit, when pitman shaft 10 along continuous straight runs are traversing, through with the effect of leading screw 11, realize the traversing of pitman shaft 10.
HM Hydraulic Motor 1, reductor 2 are connected with leading screw 11 through coupler 4.Leading screw 11 links to each other with pitman shaft 10 through leading screw guiding cover 9.Pitman shaft 10 outsides retaining has square jam nut 8, prevents that through dull and stereotyped 7 jam nut from rotating, and makes jam nut 8 when receiving the driving of leading screw 11, only do axial straight line and move.
When elevator will rise, at first by lifting hydraulic cylinder 14 platform 15 is increased to desired location, hydraulic actuating cylinder 14 not pressure releases keep podium level, primer fluid pressure motor 1; HM Hydraulic Motor 1 is just changeing, and drive speed reducer 2 drives leading screw 11 and rotates, and then drive jam nut 8 inwardly slides on flat board.Jam nut 8 arrives the pitman shaft position of elevator, and HM Hydraulic Motor stops operating, the hydraulic efficiency pressure system pressure release, and elevator just can be mechanical locked at this height.
When elevator need drop to extreme lower position, at first the primer fluid cylinder pressure 14, the load that makes hydraulic actuating cylinder 14 bear platform 15, and the primer fluid pressure motor 1 then; HM Hydraulic Motor 1 counter-rotating, drive speed reducer 2 drives leading screw 11 and rotates, and then drive jam nut 8 outwards slides on dull and stereotyped 7; Jam nut 8 arrives outermost locations, by hydraulic actuating cylinder 14 platform is dropped to extreme lower position afterwards, accomplishes down maneuver.
When elevator need drop to a certain low level, at first start lifting hydraulic cylinder 14, the load that makes lifting hydraulic cylinder bear platform 15, the primer fluid pressure motor 1 then; HM Hydraulic Motor 1 counter-rotating, drive speed reducer 2 drives leading screw 11 and rotates, and then drive jam nut 8 outwards slides on dull and stereotyped 7.Jam nut 8 arrives outermost locations, by hydraulic actuating cylinder 14 platform 15 is dropped to desired location afterwards, and the primer fluid pressure motor 1 then; HM Hydraulic Motor 1 is just changeing, and drive speed reducer 2 drives leading screw 11 and rotates, and then drive jam nut 8 inwardly slides on dull and stereotyped 7.Jam nut 8 arrives the pitman shaft position of elevator, and HM Hydraulic Motor 1 stops operating, the hydraulic efficiency pressure system pressure release, and elevator just can be mechanical locked at this height.
Claims (4)
1. the latching device of a fork hydraulic lifting platform is characterized in that, the latching device of described fork hydraulic lifting platform comprises HM Hydraulic Motor (1), reductor (2), leading screw (11), jam nut (8) and pitman shaft axle system; Pitman shaft axle system comprises pitman shaft (10), spindle nose (19), roller (18), spring cotter (17), square tube (20) and lifting support (13); HM Hydraulic Motor (1) direct connection is in reductor (2), and reductor (2) is installed in bolt and drives pedestal (3), drives pedestal (3) through being bolted to lifting support bottom platform (15) one ends; Reductor (2) is connected with leading screw (11) through coupler (4); The pitman shaft (10) of lifting support (13) is passed at leading screw (11) middle part via leading screw guiding cover (9); On jam nut (8) the suit leading screw (11), and be located at pitman shaft (10) one sides; Jam nut (8) places on the flat board (7); Screw retention is passed through on the platform (15) of lifting support bottom in dull and stereotyped (7); Leading screw (11) is equipped with thrust baring (6) near reductor (2) one ends; Leading screw (11) other end is equipped with the ball-bearing casing of usheing to seat (12); Usher to seat ball-bearing casing (12), bearing seat (5) all through screw retention on the platform (15) of lifting support bottom; One end of spindle nose (19) is the stair-stepping circular pin that external diameter increases one by one, and the other end of spindle nose (19) is stair-stepping square pole.
2. a kind of latching device of fork hydraulic lifting platform according to claim 1 is characterized in that, pitman shaft (10) is that the square rod end with two spindle noses (19) inserts in the square hole at hollow square tube (20) two ends respectively and welding fixedly forms; The circular hole that perforation is arranged at the middle part of pitman shaft (10), the internal diameter of this circular hole is with the external diameter of leading screw guiding cover (9).
3. a kind of latching device of fork hydraulic lifting platform according to claim 1 is characterized in that the circular rod end of spindle nose (19) penetrates in the hole on the lifting support (13); Roller (18) is sleeved on the circular pin termination of two spindle noses (19), and fixing through spring cotter (17); Roller (18) is positioned at guide rail (16), and moves along guide rail (16); The circular pin part of the spindle nose (19) at pitman shaft (10) two ends and an end circular hole transition fit of lifting support (13).
4. a kind of latching device of fork hydraulic lifting platform according to claim 1 is characterized in that, leading screw guiding cover (9) is circular pipe fitting, the length of side of the same pitman shaft of its length (10); Leading screw guiding cover (9) is installed in the circular hole at pitman shaft (10) middle part through interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102192931A CN101712446B (en) | 2009-12-03 | 2009-12-03 | Locking device for scissor-type hydraulic lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102192931A CN101712446B (en) | 2009-12-03 | 2009-12-03 | Locking device for scissor-type hydraulic lifting platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101712446A CN101712446A (en) | 2010-05-26 |
| CN101712446B true CN101712446B (en) | 2012-06-13 |
Family
ID=42416519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102192931A Expired - Fee Related CN101712446B (en) | 2009-12-03 | 2009-12-03 | Locking device for scissor-type hydraulic lifting platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101712446B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219166B (en) * | 2011-03-29 | 2012-11-28 | 浙江鼎力机械有限公司 | Aerial working platform for overhauling safety support |
| CN103112798A (en) * | 2012-11-09 | 2013-05-22 | 无锡市洪成造纸机械有限公司 | Fixed type drive lead screw lifting platform |
| CN103204249B (en) * | 2013-03-25 | 2015-06-10 | 大连理工大学 | Multi-shaft posture adjusting platform for airplane engine mounting |
| CN103863968A (en) * | 2014-03-12 | 2014-06-18 | 亿丰洁净科技江苏股份有限公司 | Ascending and descending device for laboratory |
| CN104495693A (en) * | 2014-12-19 | 2015-04-08 | 包头市和维德机电液压设备有限公司 | Three-in-one mechanism for driving device, safety braking device and guiding device for lifting mechanism |
| CN107777615B (en) * | 2017-11-30 | 2023-06-06 | 苏州源泰鸿贸易有限公司 | Oil storage barrel device transportation lifting platform |
| CN108910763B (en) * | 2018-08-13 | 2019-07-26 | 燕山大学 | A kind of hoistable platform locking device |
| CN114923409B (en) * | 2020-01-02 | 2023-06-23 | 浙江大学台州研究院 | Laser auxiliary calibration device based on part size measurement at different heights |
| CN112263597A (en) * | 2020-11-06 | 2021-01-26 | 拉格比(广东)健康科技有限公司 | Probiotic drop for improving allergic constitution |
| CN112573451A (en) * | 2020-12-08 | 2021-03-30 | 葛红玉 | Building construction elevating gear based on high stable supporting mechanism |
| CN115215028B (en) * | 2022-07-06 | 2023-01-31 | 青岛宝佳智能装备股份有限公司 | Top supporting plate lifting mechanism of four-way vehicle for intelligent storage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2787777A1 (en) * | 1998-12-24 | 2000-06-30 | Alain Bourgeois | Elevator platform ramp has pivoting access ramp with locking plate that moves vertically to lock ramp in upwardly inclined position and release it when returned to ground |
| US6112858A (en) * | 1998-07-21 | 2000-09-05 | Harley-Davidson Motor Company | Assembly line fixture |
| CN2900469Y (en) * | 2006-04-28 | 2007-05-16 | 烟台奔腾汽车检测维修设备制造有限公司 | Shear type lifter locking device |
| CN201012892Y (en) * | 2007-01-27 | 2008-01-30 | 河南中光学集团有限公司 | Double screw rod lifting platform |
| DE102008024051A1 (en) * | 2008-05-16 | 2009-11-19 | Maha Maschinenbau Haldenwang Gmbh & Co. Kg | locking device |
-
2009
- 2009-12-03 CN CN2009102192931A patent/CN101712446B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112858A (en) * | 1998-07-21 | 2000-09-05 | Harley-Davidson Motor Company | Assembly line fixture |
| FR2787777A1 (en) * | 1998-12-24 | 2000-06-30 | Alain Bourgeois | Elevator platform ramp has pivoting access ramp with locking plate that moves vertically to lock ramp in upwardly inclined position and release it when returned to ground |
| CN2900469Y (en) * | 2006-04-28 | 2007-05-16 | 烟台奔腾汽车检测维修设备制造有限公司 | Shear type lifter locking device |
| CN201012892Y (en) * | 2007-01-27 | 2008-01-30 | 河南中光学集团有限公司 | Double screw rod lifting platform |
| DE102008024051A1 (en) * | 2008-05-16 | 2009-11-19 | Maha Maschinenbau Haldenwang Gmbh & Co. Kg | locking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101712446A (en) | 2010-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101712446B (en) | Locking device for scissor-type hydraulic lifting platform | |
| EP2628704B1 (en) | A system for lifting a motor vehicle | |
| RU2380313C2 (en) | Load lifter | |
| EP2625132B1 (en) | Lifting bracket assembly including jack screw connector | |
| CN201065317Y (en) | Frame type radar antenna lifting device | |
| CN201998962U (en) | Electromechanical leveling support leg | |
| EP2702002B1 (en) | Drive unit for moving loads and people, and devices for moving people and loads comprising such drive units | |
| CN107285232A (en) | A kind of mechanical lift mechanism | |
| CN103738881A (en) | Four-column hydraulic lift with sliding trolley | |
| US10589966B2 (en) | Jib coupling system for jib stowage | |
| EP4137436A1 (en) | Lifting device and automated guided vehicle | |
| CN218346986U (en) | Quick-connected shelter leveling mechanism | |
| CN210480740U (en) | AGV car lifting device | |
| WO2014001883A1 (en) | Linear-motor drive unit for moving loads and people, and apparatuses for moving people and loads with such drive units | |
| EP4051621B1 (en) | Drive device | |
| DE102012100356A1 (en) | Industrial truck e.g. counterbalance forklift truck, has electrical drive comprising thrust chain that is driven by electric drive motor, where trust chain stays in effective connection with drive motor, lifting frame and/or attachment | |
| CN114505674B (en) | Pneumatic bolt type positioning and locking device | |
| CN109179258A (en) | Lifting device based on double shear knife and fork structure | |
| US20230406397A1 (en) | Linear actuator and steering system | |
| EP2658804A1 (en) | Conveying means for loads or persons | |
| CN214058806U (en) | Double-active-butt-joint multistage transfer device for heavy-load products | |
| CN114271629B (en) | Electric lifting rotatable linkage console for heavy machinery equipment | |
| CN201991873U (en) | Telescoping mechanism and engineering equipment comprising same | |
| RU2611675C1 (en) | Loader load lifter | |
| EP1116687B1 (en) | Device for lifting sceneries |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20171203 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |