CN102862930A - Scissor lift - Google Patents

Scissor lift Download PDF

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Publication number
CN102862930A
CN102862930A CN2012103620685A CN201210362068A CN102862930A CN 102862930 A CN102862930 A CN 102862930A CN 2012103620685 A CN2012103620685 A CN 2012103620685A CN 201210362068 A CN201210362068 A CN 201210362068A CN 102862930 A CN102862930 A CN 102862930A
Authority
CN
China
Prior art keywords
support
cylinder
stress
oil cylinder
scissor lift
Prior art date
Application number
CN2012103620685A
Other languages
Chinese (zh)
Inventor
李庆茂
张宝玉
张立平
Original Assignee
济南大力神机械制造有限公司
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 济南大力神机械制造有限公司 filed Critical 济南大力神机械制造有限公司
Priority to CN2012103620685A priority Critical patent/CN102862930A/en
Publication of CN102862930A publication Critical patent/CN102862930A/en

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Abstract

The invention discloses a scissor lift and belongs to lifting devices. The scissor lift structurally comprises an upper frame, a base plate, an inner support and an outer support, wherein the inner support and the outer support are hinged between the upper frame and the base plate. An upper oil cylinder and a lower oil cylinder are identical in stoke and arranged on the upper portion and the lower portion of the inner support and the lower portion of the outer support respectively, and the diameter of the lower oil cylinder is larger than that of the upper oil cylinder. Compared with the prior art, the scissor lift has the advantages that stress of a maximum stress point in hinge points is greatly improved, and stress on other hinge points high in stress is also reduced to the same extent, scissor hinge points of the scissor structure are uniform in stress, a peak value of the stress points is decreased, material usage is reduced, cost is saved, swing amplitude is evidently reduced, fatigue fracture is prevented, potential risks in use are avoided, the maximum lifting height and rated load are increased, and the like, so that the scissor lift has high popularization and application values.

Description

Fork type elevator

Technical field

The present invention relates to a kind of jacking system, especially a kind of fork type elevator.

Background technology

The maximum height of lift of the fork type elevator of producing now is 18 meters, and rated load is 300kg, and the cylinder diameter of two-layer oil cylinder is identical up and down, thrust is identical, causes cutting respectively cutting of fork structure and pitches the hinge-point unbalance stress, and the hinge-point that has is stressed larger, the several times of other hinge-point, when design, need to put selection and select size by maximum weighted, not only cost is high to cause product, and cut the fork structure swing easily, the amplitude of oscillation even surpass 30cm, even can fracture by fatigue, exist and use hidden danger.At present, good solution is not also arranged.

Summary of the invention

Technical assignment of the present invention is to provide a kind of fork type elevator for above-mentioned deficiency of the prior art, this fork type elevator has makes that the stressed of maximum weighted point is greatly improved in the hinge-point, other stressed larger hinge-point with respect to the former also same degree reduction stressed, cut the fork structure respectively to cut the fork hinge-point stressed evenly, the stress point peak value is descended, reduced the consumption of material, provide cost savings, and the amplitude of oscillation obviously reduces, can fracture by fatigue, there is not use hidden danger, improved the characteristics of maximum height of lift and rated load.

The technical solution adopted for the present invention to solve the technical problems is: it comprises added, chassis and is arranged on inner support and the outer support that is hinged between added and the chassis, the upper and lower of described inner support and outer support is respectively arranged with upper cylinder and lower oil cylinder, the stroke of described lower oil cylinder and upper cylinder is identical, and the cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder.

Cylinder diameter ratio 〉=0.7 of the cylinder diameter of described upper cylinder and lower oil cylinder and<1.

Fork type elevator of the present invention is compared with existing technology, have following outstanding beneficial effect: the cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder, make that the stressed of maximum weighted point is greatly improved in the hinge-point, stressed only have the former 46.7%, other stressed larger hinge-point with respect to the former also same degree reduction stressed, cut the fork structure respectively to cut the fork hinge-point stressed evenly, the stress point peak value is descended, it is thin that thereby inner support and outer support material can use, and reduced the consumption of material, provides cost savings, and the amplitude of oscillation obviously reduces, can fracture by fatigue, increased service life, there is not use hidden danger, maximum height of lift is 21 meters, improved maximum height of lift, and rated load is 1000kg, the characteristics such as easy to use.

Description of drawings

Accompanying drawing 1 is the structural representation of fork type elevator;

Description of reference numerals: 1, added, 2, inner support, 3, outer support, 4, upper cylinder, 5, lower oil cylinder, 6, the chassis.

The specific embodiment

With reference to explaining below 1 pair of fork type elevator work of the present invention of Figure of description.

Fork type elevator of the present invention, that its structure comprises is added 1, chassis 6 and be arranged on added 1 and chassis 6 between the inner support 2 and the outer support 3 that are hinged, the upper and lower of described inner support 2 and outer support 3 is respectively arranged with upper cylinder 4 and lower oil cylinder 5, described lower oil cylinder 5 is identical with the stroke of upper cylinder 4, and the cylinder diameter of lower oil cylinder 5 is greater than the cylinder diameter of upper cylinder 4.

Cylinder diameter ratio 〉=0.7 of the cylinder diameter of described upper cylinder 4 and lower oil cylinder 5 and<1.

Figure below is each hinge-point force analysis chart of the elevator when upper cylinder is identical with lower oil cylinder cylinder diameter before improving:

Figure below is each hinge-point force analysis chart of elevator when lower oil cylinder cylinder diameter is greater than the upper cylinder cylinder diameter after improving:

By above-mentioned two charts contrast as can be known, the cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder, make that the stressed of maximum weighted point is greatly improved in the hinge-point, stressed only have the former 46.7%, other stressed larger hinge-point with respect to the former also same degree reduction stressed, cut the fork structure respectively to cut the fork hinge-point stressed evenly, the stress point peak value is descended.

Except the described technical characterictic of specification sheets, be the known technology of those skilled in the art.

Claims (2)

1. fork type elevator, comprise added, chassis and be arranged on inner support and the outer support that is hinged between added and the chassis, the upper and lower of described inner support and outer support is respectively arranged with upper cylinder and lower oil cylinder, it is characterized in that: the stroke of described lower oil cylinder and upper cylinder is identical, and the cylinder diameter of lower oil cylinder is greater than the cylinder diameter of upper cylinder.
2. fork type elevator according to claim 1 is characterized in that: cylinder diameter ratio 〉=0.7 of the cylinder diameter of described upper cylinder and lower oil cylinder and<1.
CN2012103620685A 2012-09-25 2012-09-25 Scissor lift CN102862930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012103620685A CN102862930A (en) 2012-09-25 2012-09-25 Scissor lift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012103620685A CN102862930A (en) 2012-09-25 2012-09-25 Scissor lift

Publications (1)

Publication Number Publication Date
CN102862930A true CN102862930A (en) 2013-01-09

Family

ID=47442114

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012103620685A CN102862930A (en) 2012-09-25 2012-09-25 Scissor lift

Country Status (1)

Country Link
CN (1) CN102862930A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103382005A (en) * 2013-07-16 2013-11-06 浙江鼎力机械股份有限公司 Maintenance protective device for scissor type aerial work platform
CN103382006A (en) * 2013-07-16 2013-11-06 浙江鼎力机械股份有限公司 Scissor-type lifting aerial work platform
CN103434975A (en) * 2013-08-16 2013-12-11 广东电网公司电力科学研究院 Lifting device
CN103449331A (en) * 2013-09-09 2013-12-18 太仓高德升降机有限公司 Annular multi-post shear-fork synchronous lifting platform

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU527377A1 (en) * 1975-03-28 1976-09-05 Проектно-Конструкторское Бюро Главного Управления Автомобильного Транспорта Мосгорисполкома Lifting table
US3983960A (en) * 1973-10-15 1976-10-05 Robert Staines Scissors lift
DE3930529A1 (en) * 1989-09-13 1990-08-30 Daimler Benz Ag Hydraulic scissors lifting table - incorporates actuator connected to end of one scissor arm and acting on other
DE29700496U1 (en) * 1997-01-14 1997-02-20 Begemann Dirk Scissor lift system for work platforms
CN2892810Y (en) * 2006-05-11 2007-04-25 辽宁海龙液压机电设备有限公司 Hydraulic lifting platform
CN201597965U (en) * 2010-01-11 2010-10-06 湖南科技大学 Buried type garbage storage device
CN202063671U (en) * 2011-05-10 2011-12-07 湖南万容科技有限公司 Turnover scissors type lifting platform
CN202864821U (en) * 2012-09-25 2013-04-10 济南大力神机械制造有限公司 Fork lifter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983960A (en) * 1973-10-15 1976-10-05 Robert Staines Scissors lift
SU527377A1 (en) * 1975-03-28 1976-09-05 Проектно-Конструкторское Бюро Главного Управления Автомобильного Транспорта Мосгорисполкома Lifting table
DE3930529A1 (en) * 1989-09-13 1990-08-30 Daimler Benz Ag Hydraulic scissors lifting table - incorporates actuator connected to end of one scissor arm and acting on other
DE29700496U1 (en) * 1997-01-14 1997-02-20 Begemann Dirk Scissor lift system for work platforms
CN2892810Y (en) * 2006-05-11 2007-04-25 辽宁海龙液压机电设备有限公司 Hydraulic lifting platform
CN201597965U (en) * 2010-01-11 2010-10-06 湖南科技大学 Buried type garbage storage device
CN202063671U (en) * 2011-05-10 2011-12-07 湖南万容科技有限公司 Turnover scissors type lifting platform
CN202864821U (en) * 2012-09-25 2013-04-10 济南大力神机械制造有限公司 Fork lifter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103382005A (en) * 2013-07-16 2013-11-06 浙江鼎力机械股份有限公司 Maintenance protective device for scissor type aerial work platform
CN103382006A (en) * 2013-07-16 2013-11-06 浙江鼎力机械股份有限公司 Scissor-type lifting aerial work platform
CN103434975A (en) * 2013-08-16 2013-12-11 广东电网公司电力科学研究院 Lifting device
CN103449331A (en) * 2013-09-09 2013-12-18 太仓高德升降机有限公司 Annular multi-post shear-fork synchronous lifting platform

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Application publication date: 20130109

C02 Deemed withdrawal of patent application after publication (patent law 2001)