CN101717038B - Multiplication-variable hook device - Google Patents

Multiplication-variable hook device Download PDF

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Publication number
CN101717038B
CN101717038B CN2009101554598A CN200910155459A CN101717038B CN 101717038 B CN101717038 B CN 101717038B CN 2009101554598 A CN2009101554598 A CN 2009101554598A CN 200910155459 A CN200910155459 A CN 200910155459A CN 101717038 B CN101717038 B CN 101717038B
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CN
China
Prior art keywords
pulley
fixed
hook
pin
multiplication
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CN2009101554598A
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Chinese (zh)
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CN101717038A (en
Inventor
关颂文
王宁
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杭州国电大力机电工程有限公司
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Priority to CN2009101554598A priority Critical patent/CN101717038B/en
Publication of CN101717038A publication Critical patent/CN101717038A/en
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Publication of CN101717038B publication Critical patent/CN101717038B/en

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Abstract

The invention discloses a multiplication-variable hook device, comprising a hook, a fixed pulley bracket, a movable pullet bracket, a first pulley, a second pulley and a third pulley, wherein the hook is fixed on the movable pullet bracket, the first pulley is fixedly connected with the fixed pulley bracket, the second pulley and the third pulley are symmetrically fixed on the movable pullet bracket, and the second pulley, the first pulley and the third pulley are sequentially wound via a raising line. The hook device overcomes the deficiencies in the prior art, has no need of replacing the hook and putting the raising line through again, and can prominently complete multiplication conversion only by raising the multiplication-variable hook device to a top fixed end and then putting a pin through a pin hole of the top fixed end, thus saving a large amount of manpower, materials and time in particular and greatly enhancing efficiency; in addition, due to the installation of an automatic pin-through device and devices fitted therewith, high-altitude operation by workers is totally avoided so as to prevent the occurrence of accidents.

Description

Multiplication-variable hook device

Technical field

The present invention relates to a kind of cargo hook gear of hoisting crane, belong to mechanical engineering field.

Background technology

The lifting mechanism of a new generation's hoisting crane has adopted DC machine to add the sophisticated design of DC speed regulation, can satisfy underloading at a high speed, the various working condition requirements of heavy-duty low-speed, greatly improved the work efficiency of hoisting crane.But in the prior art, the multiplying power of cargo hook gear is changeless, and in order to adapt to the different working conditions requirement, hoisting crane is standing to have the cargo hook gear of two cover different multiplying to change on demand.

The replacing process of suspension hook is following: at first emit raising line from reel and drop to ground to suspension hook, unclamp raising line and from suspension hook, pull out; Change another set of suspension hook, wear raising line again, and the raising line end is fixed on the fixed end of reel or top, accomplish the conversion of multiplying power.This process needs 2~3 workman's honest jump times usually.

Therefore, there is following defective in prior art: because the multiplying power of cargo hook gear immobilizes, change suspension hook time-consuming, take a lot of work, reduced the service efficiency of equipment.In addition, the work of wearing raising line again belongs to aloft work, has certain danger.

Summary of the invention

Technical matters to be solved by this invention provides a kind of simple in structure, the multiplication-variable hook device that can guarantee the safe handling of lifting equipment, and it can be applicable to that all that comprise tower crane need change the lifting equipment of multiplying power.

The present invention solves the technical scheme that its technical matters takes:

This multiplication-variable hook device comprises suspension hook, fixed pulley support, moving pulley bracket, first pulley, second pulley, the 3rd pulley, wears pin assembly, a pair of travel switch and one near switch automatically; Suspension hook is fixed on the moving pulley bracket; First pulley and fixed pulley support are fixedly connected; Second pulley and the 3rd pulley are fixed on the moving pulley bracket symmetrically, and second pulley, first pulley and the 3rd pulley twine through raising line successively; The said pin assembly of wearing automatically is fixed on the fixed end in top that is positioned at fixed pulley support top, and said travel switch is fixed on the fixed end in said top and is adjacent with the bearing pin of wearing pin assembly automatically; The said top that is fixed on the fixed end in top near switch; The fixed end of said fixed pulley support and top is provided with the pin-and-hole that is used to make the bearing pin of wearing pin assembly automatically to pass, and realizes the multiplying power conversion of multiplication-variable hook device through the pin-and-hole that the said bearing pin of wearing pin assembly automatically passed and withdrawed from the fixed end of fixed pulley support and top.

Compared with prior art, multiplication-variable hook device of the present invention has overcome the above-mentioned defective of prior art, need not change suspension hook, need not wear raising line again; As long as multiplication-variable hook device is risen to the fixed end in top; Penetrate bearing pin in the pin-and-hole of the fixed end in top, just accomplish the conversion of multiplying power, effect is fine; Can save a large amount of human and material resources, particularly save time, improved greatly efficient; In addition, wear pin assembly and the travel switch supporting automatically and, avoided the workman to carry out aloft work fully, stopped the generation of safety misadventure near switch with it owing to be equipped with.

Description of drawings

Fig. 1 is the structural representation before the multiplying power of apparatus of the present invention increases;

Fig. 2 is the structural representation after the multiplying power of apparatus of the present invention increases;

Fig. 3 is apparatus of the present invention its fixed pulley support when rising to the fixed end in top, travel switch, near the connecting relation figure between the fixed end of switch and top;

1. first pulleys among the figure, 2. second pulley, 3. the 3rd pulley, 4. suspension hook, 5. moving pulley bracket, 6. raising line, 7. fixed pulley support, the 8. fixed end in top, 9. near switch, 10. travel switch, 11. wear pin assembly automatically.

The specific embodiment

Extremely shown in Figure 3 like Fig. 1; Multiplication-variable hook device of the present invention mainly is made up of suspension hook 4, fixed pulley support 7, moving pulley bracket 5, first pulley 1, second pulley 2 and the 3rd pulley 3; Suspension hook 4 is fixed on the moving pulley bracket 5; First pulley 1 is fixedly mounted on fixed pulley support 7, the second pulleys 2 and the 3rd pulley 3 is fixedly mounted on the moving pulley bracket 5 symmetrically, and second pulley 2, first pulley 1 and the 3rd pulley 3 are twined by raising line 6 successively.

The fixed end 8 in top is installed in the top of cargo hook gear, makes multiplication-variable hook device of the present invention can rise to the position of the fixed end 8 in top when using.When lifting cargo weight during greater than the design load-carrying capacity of raising line 6; Can make bearing pin pass the pin-and-hole of fixed pulley support 7 and the fixed end 8 in top; Make first pulley 1 rest on fixed end 8 places, top, thereby realize that multiplication-variable hook device of the present invention is become the multiplying power conversion of 4 multiplying powers by 2 multiplying powers with fixed pulley support 7.Automatically wear pin assembly 11 and a pair of travel switch 10 that matches with it and one near switch 9 if on the fixed end 8 in top, be installed with; Through making the bearing pin of wearing pin assembly 11 automatically pass and withdraw from the pin-and-hole of fixed pulley support 7 and the fixed end 8 in top automatically, then can realize the full automation of the multiplying power conversion of multiplication-variable hook device of the present invention.Wherein, wear pin assembly 11 automatically and be fixed on the fixed end 8 in top, travel switch 10 is fixed on the fixed end 8 in top and is adjacent with the bearing pin of wearing pin assembly 11 automatically; Be fixed on the top of the fixed end 8 in top near switch 9.

The principle of work of multiplication-variable hook device of the present invention is the multiplying power that changes raising line 6 through the position that changes first pulley 1: first pulley 1 is a kind of multiplying power when resting in the groove of moving pulley bracket 5 through fixed pulley support 7, is another kind of multiplying powers and first pulley 1 is fixed on the fixed end 8 in top.

Specifically, when using multiplication-variable hook device of the present invention with 2 multiplying powers lifting goods, raising line 6 twines second pulley 2, first pulley 1 and the 3rd pulley 3 successively, and first pulley 1 rests in the groove of moving pulley bracket 5 through fixed pulley support 7 at this moment.When using the present invention to promote goods, two of raising line 6 gets into double crosslinking drum to promote goods through the leading sheave of the fixed end 8 in top; Also can one be fixed on the fixed end 8 in top of multiplication-variable hook device top, the other end gets into the simply connected reel to promote goods through leading sheave.When lifting cargo weight during greater than the design load-carrying capacity of raising line 6, will increase the quantity of raising line 6, promptly cargo hook gear becomes 4 multiplying powers by 2 multiplying powers.At this moment; As long as rise to the fixed end 8 in top to multiplication-variable hook device, fixed end 8 tops, top send the signal that puts in place near switch 9 after because it is relative to wear the pin-and-hole of bearing pin and fixed pulley support 7 of pin assembly 11 automatically; Through wearing the pin-and-hole that pin assembly 11 can pass bearing pin fixed pulley support 7 and the fixed end 8 in top automatically; This moment first, pulley 1 was just stayed the fixed end 8 in top with fixed pulley support 7, and after raising line 6 was transferred, the multiplying power of raising line 6 doubled; The suspension hook load-carrying capacity doubles, and is shown in Figure 2.After the bearing pin of wearing simultaneously pin assembly 11 automatically touches adjacent travel switch 10, weight-lifting equipment is operated in the operating mode of 4 multiplying powers through electric control system.

Otherwise; If multiplication-variable hook device originally was in 4 multiplying power states (as shown in Figure 2); Less when the lifting cargo weight, need to improve rising or falling speed and when reducing multiplying power, be connected with fixed pulley support 7 as long as rise to the top to moving pulley bracket 5 together with first pulley 1 and the 3rd pulley 3; Automatically wear pin assembly 11 bearing pin is withdrawed from the pin-and-hole of fixed pulley support 7 and the fixed end 8 in top, fixed pulley support 7 has been fixed in the groove of moving pulley bracket 5.After raising line 6 was transferred, the multiplying power of raising line 6 had reduced one times, and multiplication-variable hook device just is in 2 multiplying power states (referring to Fig. 1).Automatically after wearing simultaneously the bearing pin shake-up travel switch 10 of pin assembly 11, weight-lifting equipment is operated in the operating mode of 2 multiplying powers through electric control system.

Claims (1)

1. multiplication-variable hook device; It is characterized in that: comprise suspension hook, fixed pulley support, moving pulley bracket, first pulley, second pulley, the 3rd pulley, automatically wear pin assembly and with wear a pair of travel switch that pin assembly matches and one automatically near switch; Suspension hook is fixed on the moving pulley bracket; First pulley and fixed pulley support are fixedly connected; Second pulley and the 3rd pulley are fixed on the moving pulley bracket symmetrically, and second pulley, first pulley and the 3rd pulley twine through raising line successively; The said pin assembly of wearing automatically is fixed on the fixed end in top that is positioned at fixed pulley support top, and said travel switch is fixed on the fixed end in said top and is adjacent with the bearing pin of wearing pin assembly automatically; The said top that is fixed on the fixed end in top near switch; The fixed end of said fixed pulley support and top is provided with the pin-and-hole that is used to make the bearing pin of wearing pin assembly automatically to pass, and realizes the multiplying power conversion of multiplication-variable hook device through the pin-and-hole that the said bearing pin of wearing pin assembly automatically passed and withdrawed from the fixed end of fixed pulley support and top.
CN2009101554598A 2009-12-14 2009-12-14 Multiplication-variable hook device CN101717038B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009101554598A CN101717038B (en) 2009-12-14 2009-12-14 Multiplication-variable hook device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009101554598A CN101717038B (en) 2009-12-14 2009-12-14 Multiplication-variable hook device

Publications (2)

Publication Number Publication Date
CN101717038A CN101717038A (en) 2010-06-02
CN101717038B true CN101717038B (en) 2012-05-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102887426A (en) * 2012-09-27 2013-01-23 山东丰汇设备技术有限公司 Full-magnification transformed and multi-fetching device interchangeable combined lifting device and using method for combined lifting device
CN103204438A (en) * 2012-12-06 2013-07-17 浙江虎霸建设机械有限公司 Movable arm type tower crane arm tip segment structure
CN103588090A (en) * 2013-11-26 2014-02-19 国家电网公司 Lifting hook for quickly realizing multiplying power conversion of pulley block

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102530722A (en) * 2012-02-06 2012-07-04 青岛海西重机有限责任公司 Pulley system of variable power crane hoisting hook and integrated system thereof
CN102826444A (en) * 2012-09-16 2012-12-19 江麓机电集团有限公司 Automatic multiplying power changing device of tower crane
CN102849645B (en) * 2012-09-27 2015-04-15 山东丰汇设备技术有限公司 Movable pulley and fixed pulley transferable combined type pulley block
CN102942111B (en) * 2012-11-15 2015-06-17 诺威起重设备(苏州)有限公司 Oblique-pulley lifting hook device
CN103231988B (en) * 2013-05-20 2015-05-13 中联重科股份有限公司 Tower crane as well as trolley thereof, and rope winding ratio change method thereof
CN104310240A (en) * 2014-10-11 2015-01-28 徐州建机工程机械有限公司 Automatic override converting device of tower crane
CN104355243B (en) * 2014-10-30 2016-08-24 徐州建机工程机械有限公司 A kind of movable arm tower crane magnification transformable device
CN104986681A (en) * 2015-07-01 2015-10-21 郑州科润机电工程有限公司 Power-variable device for single-power pulley block

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU652100A1 (en) * 1976-04-02 1979-03-15 Центральное Конструкторское Бюро "Строймаш" Load-handling variable-ratio pulley block
CN2605242Y (en) * 2003-03-30 2004-03-03 谢家波 Hook with changeable multiple-power of wire

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU652100A1 (en) * 1976-04-02 1979-03-15 Центральное Конструкторское Бюро "Строймаш" Load-handling variable-ratio pulley block
CN2605242Y (en) * 2003-03-30 2004-03-03 谢家波 Hook with changeable multiple-power of wire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102887426A (en) * 2012-09-27 2013-01-23 山东丰汇设备技术有限公司 Full-magnification transformed and multi-fetching device interchangeable combined lifting device and using method for combined lifting device
CN103204438A (en) * 2012-12-06 2013-07-17 浙江虎霸建设机械有限公司 Movable arm type tower crane arm tip segment structure
CN103588090A (en) * 2013-11-26 2014-02-19 国家电网公司 Lifting hook for quickly realizing multiplying power conversion of pulley block

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