CN202226602U - Multistage screw jack - Google Patents

Multistage screw jack Download PDF

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Publication number
CN202226602U
CN202226602U CN2011203065762U CN201120306576U CN202226602U CN 202226602 U CN202226602 U CN 202226602U CN 2011203065762 U CN2011203065762 U CN 2011203065762U CN 201120306576 U CN201120306576 U CN 201120306576U CN 202226602 U CN202226602 U CN 202226602U
Authority
CN
China
Prior art keywords
nut
screw
sleeve
worm
jack
Prior art date
Application number
CN2011203065762U
Other languages
Chinese (zh)
Inventor
梁德泉
徐鹏
Original Assignee
梁德泉
徐鹏
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 梁德泉, 徐鹏 filed Critical 梁德泉
Priority to CN2011203065762U priority Critical patent/CN202226602U/en
Application granted granted Critical
Publication of CN202226602U publication Critical patent/CN202226602U/en

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Abstract

The utility model provides a multistage screw jack which relates to a hoist device. The multistage screw jack mainly comprises a housing, a base and a lifting mechanism. The base is provided with a power transmission mechanism. The lifting mechanism comprises a worm and gear unit, a central lead screw, a nut lead screw, and an outer sleeve nut. The worm and gear unit is connected with the base by a bearing. The worm and gear unit is connected with the power transmission mechanism. The central lead screw is fixedly connected with the worm and gear unit by a locating pin and a key. The central lead screw is in threaded connection with the inner layer of the nut lead screw. The nut lead screw is in threaded connection with the inner layer of the outer sleeve nut. Compared with the traditional jack, the multistage screw jack has the characteristics of large travel, accurate and reliable localization and two-way accurate control.

Description

A kind of multiple coil jack
Technical field
The utility model relates to the mechanical equipment field, is specially a kind of hoisting device.
Background technology
Jack is the simple and easy weight-lifting equipment of a kind of lifting highly little (being generally less than 1m), and it has two kinds of mechanical type and fluid pressure types, and the mechanical type jack has rack-and-pinion and spiral two kinds again; Because lifting weight is little, the operation effort generally only is used for flight-line maintenance work; The fluid pressure type jack structure is compact, and stable working has self-locking action; So use extensively, its shortcoming is that the lifting relative travel is limited.
Summary of the invention
The purpose of the utility model just provide a kind of accurate positioning reliable, can two-way accuracy control, lifting screw that the lifting stroke is big.
A kind of multiple coil jack, it mainly is made up of housing, base, lifting mechanism, and base is provided with power transmission mechanism; Lifting mechanism comprises worm and gear, center leading screw, nut screw, outer layer sleeve nut; Worm and gear is connected with base through bearing, and worm and wormwheel is connected with power transmission mechanism, and the center leading screw is fixedly connected through locating dowel pin, key and worm and gear; Center leading screw and nut screw internal layer thread connection, nut screw is threaded with outer layer sleeve nut internal layer.
Described sleeve nut's skin is provided with vertical groove, and the sleeve nut is through the feather key I sliding block joint on groove and the outer accessory.
Also be provided with protective sleeve in the described housing; Protective sleeve is outside equipped with groove; Protective sleeve is provided with the feather key I through the feather key II sliding block joint on groove and the housing in the protective sleeve, feather key I and sleeve nut's groove sliding block joint in the protective sleeve.
Described center leading screw, nut screw upper end are provided with limiting stopper.
Described nut screw lower end is provided with dop.
Screw thread on described center leading screw, nut screw and the sleeve nut is the serration motion thread.
Described nut screw and sleeve nut's internal layer are the part screw thread, are provided with the slip space between itself and the internal layer accessory.
Described outer layer sleeve nut upper end is provided with end cap, and end cap is threaded with the sleeve nut, according to actual needs, can adjust the height of end cap.
Described feed screw nut can be the multilayer nut screw to be formed, and can be one, two, three.
The principle of work of this device is: external impetus conducts to worm and wormwheel, worm and wormwheel through power transmission mechanism and drives center leading screw rotation; The center leading screw makes the outer layer sleeve nut do lifting lifting campaign through nut screw (can establish multilayer); Lift height can be greater than the jack oneself height; When two above jacks of needs are synchronized with the movement; Each layer lifting leading screw can be made as identical pitch, can realize multiple spot, rigidity, bi-directional synchronization action, and each layer end position is equipped with the high strength position limiting structure; Strokes at different levels are accurate, the spacing failure-free purpose of operation thereby reach, and this jack is specially adapted to the occasion that low chassis, the use of large-tonnage Mechanical Help holder car and limited space need big stroke bidirectional control.
Compare existing jack, the multiple coil jack has reliable, the characteristics that can two-way accuracy control of stroke big (can greater than oneself height), accurate positioning.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
The specific embodiment
A kind of multiple coil jack shown in accompanying drawing; It mainly is made up of housing 1, base 2, lifting mechanism; Base 2 is provided with power transmission mechanism, and lifting mechanism comprises worm and gear 3, center leading screw 4, nut screw 5, outer layer sleeve nut 6, and worm and gear 3 is connected with base 2 through bearing 7; Worm and wormwheel 3 is connected with power transmission mechanism; Center leading screw 4 is fixedly connected through locating dowel pin, key and worm and gear 3, center leading screw 4 and nut screw 5 internal layer thread connection, and nut screw 5 is threaded with outer layer sleeve nut 6 internal layers.
Described power transmission mechanism is the worm and gear transmission when motor-driven, can be the bevel gear transmission in the time of manually, and during the worm and gear transmission, the worm screw input end is connected through coupler with the actuating unit input shaft; Manually during the bevel gear transmission, input gear axle outer end installs ratchet device additional, through the ratchet M/C.
Described sleeve nut's 6 skins are provided with vertical groove, and sleeve nut 6 is through the feather key I sliding block joint on groove and the outer accessory.
Also be provided with protective sleeve 8 in the described housing 1; Protective sleeve 8 is outside equipped with groove; Protective sleeve 8 is provided with the feather key I through feather key II 9 sliding block joints on groove and the housing 1 in the protective sleeve 8, feather key I and sleeve nut's 6 groove sliding block joints in the protective sleeve 8.
Feather key I on above-mentioned sleeve nut 6 and the protective sleeve 8, the effect of feather key II are to prevent sleeve nut's 6 rotations.
Described center leading screw 4, nut screw 5 upper ends are provided with limiting stopper 10, in order to limit lifting leading screw stroke.
Described nut screw 5 lower ends are provided with dop 11.
Screw thread on described center leading screw 4, nut screw 5 and the sleeve nut 6 is motion thread, and motion thread is that jack is used the serration motion thread, can carry bigger load.
Described nut screw 5 and sleeve nut's 6 internal layers are the part screw thread, are provided with the slip space between itself and the internal layer accessory.
Described outer layer sleeve nut 6 upper ends are provided with end cap 12, and end cap 12 is threaded with sleeve nut 6, according to actual needs, can adjust the height of end cap 12.
Nut screw is set to one in the present embodiment; In actual application,, can be designed as the mutual thread connection of a plurality of nut screw according to the lift height requirement; For example 2,3 feed screw nuts are the thread connection form successively, can further improve the lifting stroke of jack.

Claims (10)

1. multiple coil jack; It mainly is made up of housing (1), base (2), lifting mechanism; Base (2) is provided with power transmission mechanism, it is characterized in that: lifting mechanism comprises worm and gear (3), center leading screw (4), nut screw (5), outer layer sleeve nut (6), and worm and gear (3) is connected with base (2) through bearing (7); Worm and wormwheel (3) is connected with power transmission mechanism; Center leading screw (4) is fixedly connected through locating dowel pin, key and worm and gear (3), center leading screw (4) and nut screw (5) internal layer thread connection, and nut screw (5) is threaded with outer layer sleeve nut (6) internal layer.
2. according to the described multiple coil jack of claim 1, it is characterized in that: sleeve nut (6) skin is provided with vertical groove, and sleeve nut (6) is through the feather key I sliding block joint on groove and the outer accessory.
3. according to the described multiple coil jack of claim 1; It is characterized in that: also be provided with protective sleeve (8) in the housing (1); Protective sleeve (8) is outside equipped with groove; Protective sleeve (8) is through feather key II (9) sliding block joint on groove and the housing, and protective sleeve is provided with the feather key I in (8), interior feather key I of protective sleeve (8) and sleeve nut (6) groove sliding block joint.
4. according to the described multiple coil jack of claim 1, it is characterized in that: center leading screw (4), nut screw (5) upper end are provided with limiting stopper (10).
5. according to the described multiple coil jack of claim 1, it is characterized in that: nut screw (4) lower end is provided with dop (11).
6. according to the described multiple coil jack of claim 1, it is characterized in that: described nut screw is two, thread connection between the nut screw.
7. according to the described multiple coil jack of claim 1, it is characterized in that: described nut screw is three, thread connection between the nut screw.
8. according to the described multiple coil jack of claim 1, it is characterized in that: the screw thread on center leading screw (4), nut screw (5) and the sleeve nut (6) is motion thread.
9. according to the described multiple coil jack of claim 1, it is characterized in that: nut screw (5) and sleeve nut (6) internal layer are the part screw thread, are provided with the slip space between itself and the internal layer accessory.
10. according to the described multiple coil jack of claim 1, it is characterized in that: outer layer sleeve nut (6) upper end is provided with end cap (12), and end cap (12) is threaded with sleeve nut (6).
CN2011203065762U 2011-08-22 2011-08-22 Multistage screw jack CN202226602U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203065762U CN202226602U (en) 2011-08-22 2011-08-22 Multistage screw jack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203065762U CN202226602U (en) 2011-08-22 2011-08-22 Multistage screw jack

Publications (1)

Publication Number Publication Date
CN202226602U true CN202226602U (en) 2012-05-23

Family

ID=46077201

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011203065762U CN202226602U (en) 2011-08-22 2011-08-22 Multistage screw jack

Country Status (1)

Country Link
CN (1) CN202226602U (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072921A (en) * 2013-01-25 2013-05-01 潍坊路加精工有限公司 Cylinder-type automatic lifting device
CN105016238A (en) * 2014-04-24 2015-11-04 青岛中集冷藏运输设备有限公司 Mechanical lifting system, car body and exchange car
CN105016237A (en) * 2014-04-24 2015-11-04 青岛中集冷藏运输设备有限公司 Mechanical spiral lifting device
CN105035993A (en) * 2015-07-01 2015-11-11 浙江捷昌线性驱动科技股份有限公司 Lifter
CN107215811A (en) * 2017-06-15 2017-09-29 孙永 A kind of lowering or hoisting gear for Medical Devices
CN107285232A (en) * 2016-03-30 2017-10-24 湖北华昌达智能装备股份有限公司 A kind of mechanical lift mechanism
CN109231060A (en) * 2018-11-05 2019-01-18 兰州万里航空机电有限责任公司 Can two-stage lifting mechanic jacks
CN111039221A (en) * 2019-11-08 2020-04-21 合肥科大智能机器人技术有限公司 Light lead screw lifting mechanism
CN111115487A (en) * 2019-12-12 2020-05-08 深圳市优必选科技股份有限公司 Electric lifting rod

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072921A (en) * 2013-01-25 2013-05-01 潍坊路加精工有限公司 Cylinder-type automatic lifting device
CN103072921B (en) * 2013-01-25 2016-03-02 潍坊路加精工有限公司 Cartridge type apparatus for automatically lifting
CN105016238A (en) * 2014-04-24 2015-11-04 青岛中集冷藏运输设备有限公司 Mechanical lifting system, car body and exchange car
CN105016237A (en) * 2014-04-24 2015-11-04 青岛中集冷藏运输设备有限公司 Mechanical spiral lifting device
CN105016237B (en) * 2014-04-24 2018-10-12 青岛中集冷藏运输设备有限公司 Mechanical spiral lifting device
CN105035993A (en) * 2015-07-01 2015-11-11 浙江捷昌线性驱动科技股份有限公司 Lifter
CN105035993B (en) * 2015-07-01 2017-08-08 浙江捷昌线性驱动科技股份有限公司 Lifter
CN107285232A (en) * 2016-03-30 2017-10-24 湖北华昌达智能装备股份有限公司 A kind of mechanical lift mechanism
CN107215811A (en) * 2017-06-15 2017-09-29 孙永 A kind of lowering or hoisting gear for Medical Devices
CN107215811B (en) * 2017-06-15 2018-11-09 乔文兴 A kind of lifting gear for Medical Devices
CN109231060A (en) * 2018-11-05 2019-01-18 兰州万里航空机电有限责任公司 Can two-stage lifting mechanic jacks
CN111039221A (en) * 2019-11-08 2020-04-21 合肥科大智能机器人技术有限公司 Light lead screw lifting mechanism
CN111115487A (en) * 2019-12-12 2020-05-08 深圳市优必选科技股份有限公司 Electric lifting rod

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120523

Termination date: 20140822