CN203065011U - Oblique pulley hook device - Google Patents
Oblique pulley hook device Download PDFInfo
- Publication number
- CN203065011U CN203065011U CN 201220603886 CN201220603886U CN203065011U CN 203065011 U CN203065011 U CN 203065011U CN 201220603886 CN201220603886 CN 201220603886 CN 201220603886 U CN201220603886 U CN 201220603886U CN 203065011 U CN203065011 U CN 203065011U
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- Prior art keywords
- pulley
- oblique
- hook
- fixed pulley
- horizontal surface
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Abstract
The utility model discloses an oblique pulley hook device which comprises a hook, a hook nut, a thrust bearing, a hook beam, a pulley block and a pulling plate, wherein the pulley block comprises a fixed pulley and a movable pulley. The oblique pulley hook device is characterized in that projection positions of rope inlet points and rope outlet points of the fixed pulley and the movable pulley in a horizontal plane are on the same straight line. The oblique pulley hook device is simple in structure and convenient to mount; service lives of the pulleys, steel wire ropes and the bearing are prolonged; replacement periods of wearing parts are prolonged; and time and cost are saved for production and maintenance.
Description
Technical field
The utility model relates to a kind of hoisting crane, especially a kind of oblique pulley cargo hook gear.
Background technology
Cargo hook gear is to use the most general load-engaging device on the hoisting crane, and it is made up of parts such as suspension hook, hook nut, thrust baring, lifting beam with hook, pulley, sheave shaft and arm-tie.Use pulley to reach the labour-saving purpose in the cargo hook gear, steel rope is wrapped on the pulley to be close to tangent mode during work, simultaneously since the pulley in the cargo hook gear and fixed pulley, end anchor fitting and the reel in the vertical direction of top have dislocation, cause steel rope that certain drift angle is arranged, thereby make steel rope abrasion (with the friction of reel, pulley room) influence the service life of steel rope and pulley.
The utility model content
The utility model purpose is: provide a kind of steel rope that can reduce to the destructive force of pulley, bearing, prolong the oblique pulley cargo hook gear of pulley and rope service-life.
The technical solution of the utility model is: a kind of oblique pulley cargo hook gear, comprise suspension hook, hook nut, thrust baring, lifting beam with hook, assembly pulley and arm-tie, described assembly pulley comprises a fixed pulley and a movable pulley, it is characterized in that, described fixed pulley and movable pulley into and out of the rope point projected position in-line at horizontal surface.
Further, described fixed pulley and fixed pulley anchor fitting are not 0 at horizontal surface projection angle.
Further, described fixed pulley and fixed pulley anchor fitting equal movable pulley and fixed pulley anchor fitting in the angle of horizontal surface projection angle in the angle of horizontal surface projection angle.
Further, described assembly pulley is at least one group.
Further, when the quantity of assembly pulley is even number, per two pairs of assembly pulleys decide cunning at the projected position of horizontal surface in-line and not parallel not.
A kind of hoisting crane is characterized in that, has used above-mentioned oblique pulley cargo hook gear.
Principle of work: Fig. 1 is the contact point section drawing of steel rope and pulley groove under the perfect condition, and this moment, contact point was at the pulley kernel of section.Be subjected to positive pressure on the contact point, the pressure radial finger is to bearing (bearing is strong to the load-carrying capacity of pressure radially), and friction condition is static friction (static friction can not produce wearing and tearing).This kind situation all is optimal to steel rope, pulley and bearing, seldom occurs unfortunately.Fig. 2 is steel rope under the general state and the contact point section drawing of pulley groove, this moment steel rope center and pulley groove center not on same vertical line, it is more serious that contact point departs from.Positive pressure on the contact point produces axial component (bearing to) at bearing, friction condition is cliding friction (cliding friction can produce wearing and tearing), cause following damage: 1. steel rope has certain drift angle, and the two sides friction ratio of the steel rope of deflection and pulley is severe, the two serious wear; 2. deflection angle of rope can be given bigger axial force of bearing.According to the GB/T3811-2008 defined, steel rope moves into or the maximum deflection angle when laying out pulley groove (angle between steel rope line of centers and the plane vertical with sheave shaft) should be greater than 5 ° (do not get when actual design is calculated and be not more than 4 °), when angle of deviation is 4 ° of critical angles, the friction of steel rope and pulley groove side is also bigger, serious wear, as Fig. 2, Fig. 3, steel rope shown in Figure 4 and the friction force f=μ Fsin θ of pulley groove side, wherein μ is the friction coefficient of pulley groove side, F is pull of steel wire, and the θ steel rope is into and out of the rope angle; Moment of torsion M=F on the pulley.* l, wherein F.Be the axle pressure on the bearing, F.=F'cos α, F' are the positive pressure F'=Fsin θ that produces friction, and l is toggle.By above formula as can be seen, reduce turnover rope angle θ, the power of can reducing friction f and the moment of torsion M of steel rope.Fixed pulley of the present utility model and movable pulley into and out of the rope point projected position in-line at horizontal surface, turnover rope angle is 0, has therefore reduced the bearing of lineoutofservice signal pull F, pulley and steel rope and has damaged.Prolonged the life-span of correlated parts.
The utility model has the advantages that:
In service life simple in structure, easy for installation, as to have increased pulley and steel rope, pulley and bearing, the replacement cycle that has prolonged consumable accessory is that time and money has been saved in production and maintenance.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is steel rope under the perfect condition and the contact point section drawing of pulley groove.
Fig. 2 is steel rope under the general state and the contact point section drawing of pulley groove.
Fig. 3 is the pulley force diagram.
Fig. 4 is pulley and shaft strength figure.
Fig. 5 is oblique pulley cargo hook gear structural representation of the present utility model.
Fig. 6 is oblique pulley cargo hook gear fixed pulley of the present utility model and movable pulley positional structure scheme drawing.
Fig. 7 is existing fixed pulley and movable pulley position view.
Fig. 8 is fixed pulley of the present utility model and movable pulley position view.
Wherein: 1 steel rope cross section; 2 pulley groove cross sections; 3 contact points; 4 pulleys; 5 bearings; 6 sheave shafts; 7 fixed pulleys; 8 movable pulleys; 9 roll devices; 10 end anchor fittings; 11 steel ropes; 12 cargo hook gears; 15 fixed pulley anchor fittings.
The specific embodiment
Embodiment: oblique pulley cargo hook gear as shown in Figure 5, comprise suspension hook, hook nut, thrust baring, lifting beam with hook, assembly pulley and arm-tie, this assembly pulley comprises a fixed pulley 7 and a movable pulley 8, fixed pulley 7 and movable pulley 8 into and out of the projected position in-line of rope point at horizontal surface, the elevation angle of the relative fixed pulley of steel rope is θ 1=0, as shown in Figure 8.With respect to existing scheme, because the movable pulley axle is parallel, actual when being raised to topmost, the elevation angle of the relative fixed pulley of steel rope is θ 1, as shown in Figure 7.Fixed pulley and movable pulley into and out of the rope point projected position in-line at horizontal surface, turnover rope angle is 0, has therefore reduced the bearing of lineoutofservice signal pull F, pulley and steel rope and has damaged.Prolonged the life-span of correlated parts.In order to make assembly pulley work better effects if, fixed pulley and fixed pulley anchor fitting equal movable pulley and fixed pulley anchor fitting in the angle of horizontal surface projection angle, as shown in Figure 6 in the angle of horizontal surface projection angle.Adopt after such setting, fixed pulley and movable pulley and steel rope are stressed more even, are convenient to reduce the bearing of lineoutofservice signal pull F, pulley and steel rope more and damage.Assembly pulley in the present embodiment is two groups, and the modes of emplacement of two groups of assembly pulleys is modes of emplacement facing each other.Also more assembly pulley can be installed according to actual needs, when the quantity of assembly pulley greater than two and when being even number, per two pairs of assembly pulleys decide cunning in the projected position of horizontal surface not in-line and not parallel, the better effects if of Fang Zhiing like this.
Above embodiment only is the utility model a kind of embodiment wherein, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (5)
1. oblique pulley cargo hook gear, comprise suspension hook, hook nut, thrust baring, lifting beam with hook, assembly pulley and arm-tie, described assembly pulley comprises a fixed pulley and a movable pulley, it is characterized in that, described fixed pulley and movable pulley into and out of the rope point projected position in-line at horizontal surface.
2. oblique pulley cargo hook gear according to claim 1 is characterized in that, described fixed pulley and fixed pulley anchor fitting are not 0 at horizontal surface projection angle.
3. oblique pulley cargo hook gear according to claim 2 is characterized in that, described fixed pulley and fixed pulley anchor fitting equal movable pulley and fixed pulley anchor fitting in the angle of horizontal surface projection angle in the angle of horizontal surface projection angle.
4. oblique pulley cargo hook gear according to claim 1 is characterized in that, described assembly pulley is at least one group.
5. oblique pulley cargo hook gear according to claim 4 is characterized in that, when the quantity of assembly pulley is even number, per two pairs of assembly pulleys decide cunning at the projected position of horizontal surface in-line and not parallel not.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603886 CN203065011U (en) | 2012-11-15 | 2012-11-15 | Oblique pulley hook device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603886 CN203065011U (en) | 2012-11-15 | 2012-11-15 | Oblique pulley hook device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203065011U true CN203065011U (en) | 2013-07-17 |
Family
ID=48763826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603886 Expired - Lifetime CN203065011U (en) | 2012-11-15 | 2012-11-15 | Oblique pulley hook device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203065011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942111A (en) * | 2012-11-15 | 2013-02-27 | 诺威起重设备（苏州）有限公司 | Oblique-pulley lifting hook device |
| CN108263943A (en) * | 2018-03-05 | 2018-07-10 | 苏州库力铁重工有限公司 | Hook gear used for electric hoist |
-
2012
- 2012-11-15 CN CN 201220603886 patent/CN203065011U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102942111A (en) * | 2012-11-15 | 2013-02-27 | 诺威起重设备（苏州）有限公司 | Oblique-pulley lifting hook device |
| 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 |
| CN108263943A (en) * | 2018-03-05 | 2018-07-10 | 苏州库力铁重工有限公司 | Hook gear used for electric hoist |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tao Fenghua Inventor before: Teng Yong Inventor before: Wang Ming Inventor before: Yin Zhiming |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: TENG YONG WANG MING YIN ZHIMING TO: TAO FENGHUA |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130717 |
|
| CX01 | Expiry of patent term |