CN203295032U

CN203295032U - Bow lifting and hoisting shackle

Info

Publication number: CN203295032U
Application number: CN2013203212953U
Authority: CN
Inventors: 张峰
Original assignee: Sinohydro Jiajiang Hydraulic Machinery Co Ltd
Current assignee: Sinohydro Jiajiang Hydraulic Machinery Co Ltd
Priority date: 2013-06-05
Filing date: 2013-06-05
Publication date: 2013-11-20
Anticipated expiration: 2023-06-05

Abstract

The utility model discloses a bow lifting and hoisting shackle relating to the technical field of lifting and hoisting shackles. The bow lifting and hoisting shackle comprises a shackle body, a shackle top and a shackle hole, wherein the shackle body is integrated with the shackle top; the open end of the shackle body is provided with the shackle hole; a pin shaft is integrated with the shackle top and the shackle body after passing through the shackle hole; the diameter of a round on the inner wall of the shackle top is larger than the diameter between two ends of the open end of the shackle body; the shackle body arranged above the pin shaft and the shackle top form a bow body; the section of the bow body is elliptic. By using the bow lifting and hoisting shackle, the contact area between the shackle and a rope is increased, the service life of the rope is prolonged, and the safety of the rope is improved.

Description

The hoisting and hanging bow shackle

Technical field

The utility model relates to hoisting and hanging shackle technical field.

Background technology

Hoisting and hanging unloads and is buckled in the existing standard of national standard mechanical design handbook, and hoisting and hanging unloads and is buckled in the production practical application is mainly to coordinate the hoisting rope tool to support the use; The lifting shackle mainly comprises button top, button and bearing pin, and button top and button are the single piece of steel matter, and button has open end, has two buttonholes that are oppositely arranged on open end, and bearing pin passes buttonhole and forms a whole with button top and button.The lifting shackle is divided into the shackle of D shape and bow shackle.As its name suggests, D shape is unloaded and is smashed, the button of bearing pin top and button top be shaped as n shape, add a bearing pin and just formed D shape, in the shackle of D shape, the round diameter of button top inwall equals the diameter between the button two ends; In bow shackle, the round diameter of button top inwall is greater than the diameter between the button two ends.The button top is mainly for hook hoisting rope tool, and bearing pin is mainly the lifting hanger of hanging on workpiece be used to wearing.

Granted publication number is CN200951925, Granted publication day is that the Chinese patent literature on September 26th, 2007 discloses a kind of lifting shackle, when overcoming existing shackle sealing, lateral pin is welded on body, make whole shackle scrap waste greatly during replacing, and welding easily causes shackle inside crackle to occur, exist the shortcoming of potential safety hazard to provide, shackle comprises semi-circular, there is the body of relative opening at the both ends open place, with be through the lateral pin that seals in relative opening, one end of lateral pin is with the gear platform, the bolt hole of crossing of body one end passes in the bar section of lateral pin, the screw rod of its end is screwed in the screw hole of the other end, screw end head is exposed at beyond body with can turning over riveting.Being connected connection with body due to lateral pin, is that after being screwed in the screw rod of lateral pin in screw hole on body, its external part turns over the riveting sealing, only need cut off lateral pin while changing shackle, lateral pin is taken out the lateral pin more renew get final product, its body can repeated usage, thereby has saved a large amount of materials and fund; There is no welding process, shackle not there will be crackle to destroy, and is safe and reliable.

But for a long time, original load clamp exists rope hook place to wear and tear too early in actual use, causes the life-span to descend, rope exposes to the sun core, the safety misadventure such as rope fracture even occurs; By researching and analysing, the major cause that causes the problems referred to above is that original load clamp exists certain structure design defect; Because the shackle volume is little, the damage of the protection pad thing of jumping a queue at its hanger with rope place during use protection rope is very difficult, and the major diameter rope is impossible realize at all, and the body diameter on former load clamp button and button top is seriously less than normal, and unreasonable the need improved.

Summary of the invention

The utility model is intended to for the existing button of above-mentioned prior art and the less technical matters of button top diameter, a kind of hoisting and hanging bow shackle is provided, the utility model has increased the area of contact of shackle and rope, and the service life of rope and safety are improved.

The utility model is by adopting following technical proposals to realize:

A kind of hoisting and hanging bow shackle, comprise button, button top and buttonhole, button and button top are one-body molded, have buttonhole on the open end of button, bearing pin passes buttonhole and forms a whole with button top and button, it is characterized in that: the round diameter of button top inwall is greater than the diameter between the two ends of button open end, and the button above bearing pin and button top form arc body, and the cross sectional shape of arc body is oval.

Described arc the oval-shaped major diameter of body section is the twice of minor axis.

Compared with prior art, the beneficial effects of the utility model show:

1, the utility model adopts the cross sectional shape of arc body as being arranged to oval-shaped version, with respect to existing circular configuration, unload buckle structure more scientific and reasonable, more near wire rope pulley diameter selection principle, and greatly having increased shackle and rope area of contact, service life, the safety of rope significantly improve.And after changing circle into ellipse, on the load clamp manufacturing process flow without large impact.Promote the use of the shackle of this New crane, can significantly save the lifting rope cost of raw material for country.

2, in the utility model, with arc the oval-shaped major diameter of body section, be the form of the twice of minor axis, in the area of contact of saving cost and increase as much as possible between shackle and rope, reached balance.Through actual measuring and calculating, compared to original circular, fashion, the area that shackle is contacted with rope has improved 2.911 times.

Description of drawings

Fig. 1 is front view of the present utility model

Fig. 2 is left view of the present utility model

Fig. 3 is birds-eye view of the present utility model

Mark in figure:

1, button, 2, button top, 3, buttonhole, 4, bearing pin, major diameter, 2d, minor axis, d.

The specific embodiment

The utility model is described in further detail below in conjunction with specification drawings and specific embodiments.

Embodiment 1

As a preferred embodiments of the present utility model, the utility model discloses a kind of hoisting and hanging bow shackle, comprise button top 2, button 1 and bearing pin 4, button top 2 and button 1 are the single piece of steel matter, button 1 has open end, have two buttonholes 3 that are oppositely arranged on open end, bearing pin 4 passes buttonhole 3 and forms a whole with button top 2 and button 1, as shown in Figure 1, the round diameter of button top 2 inwalls is greater than the diameter between the two ends of button 1 open end, button 1 above bearing pin 4 and button top 2 form arc body, and the cross sectional shape of arc body is oval.

Embodiment 2

As preferred forms of the present utility model, with reference to Figure of description 1, arc the oval-shaped major diameter of body section is 2d, and minor axis is d.Bearing pin has two kinds of versions: 1, on an end of button open end, a buttonhole is set, the other end is provided with internal thread hole, and bearing pin is connected with the internal thread hole on the other end after passing buttonhole on an end of open end; 2, all respectively be provided with a buttonhole on the two ends of button open end, bearing pin passes two buttonholes, and the another end head of bearing pin adds loading nut.All the other structures are with embodiment 1.

Characteristics of the present utility model are: original standard sequential parameter constant only changes arc body section of shackle; Thereby not impact when the product design manufacturing is considered to support the use the load clamp occasion.The load clamp structure is more scientific and reasonable, steel rope and diameter of pulley multiplying power relation principle in making with reference to machine design, and the cylindrical cross-section that namely unloads button 1 is improved to elliptic cross-section; Wherein the minor axis length of elliptic cross-section keeps according to former serial shackle body diameter, and the long axis length of elliptic cross-section is taked former serial shackle body diameter 2 multiple length little progress professional etiquette model designs; Its shackle parameter does not have much variations from front view.Yet shackle has made elliptic cross-section into, thereby has greatly increased shackle and rope area of contact; Service life, the safety of rope also significantly improve, and have improved the reliability of hoisting rope tool.After unloading button 1 cylinder cross section improvement, without large impact, load clamp specialty maker drops on a small quantity modification and can realize for the hoisting sling manufacturing process flow; Promote the use of the New crane shackle, will significantly save the lifting rope cost of raw material, the design of hoisting sling, manufacturing and use have more specialty; Have good economic benefit and social benefit.

Steel rope and the contrast of shackle contact surface situation:

Before improving, steel rope contacts and is approximately semi-circumferential with shackle;

After improving, steel rope contacts with shackle and is approximately semiellipse week shape;

Semicircle girth=3.14*r(is the r-radius of circle wherein);

Semiellipse girth=3.14b+2*(a+b) (wherein the oval major semiaxis of a-, the oval semi-minor axis of b-);

Cause: b=r; A=2b;

Therefore: semicircle girth=3.14*r;

Semiellipse girth=3.14b+2*(a+b)=3.14r+2*(2r+r)=3.14r+6r=9.14r;

Semiellipse girth/semicircle girth=9.14r/3.14*r=2.911;

As seen: its steel rope of the shackle after improvement and shackle contact surface have improved 2.911 times, i.e. reliability, safety obtains essence and change.

Claims

1. hoisting and hanging bow shackle, comprise button (1), button top (2) and buttonhole (3), button (1) and button top (2) are one-body molded, have buttonhole (3) on the open end of button (1), bearing pin (4) passes buttonhole (3) and forms a whole with button top (2) and button (1), it is characterized in that: the round diameter of button top (2) inwall is greater than the diameter between the two ends of button (1) open end, button (1) and button top (2) in bearing pin (4) top form arc body, and the cross sectional shape of arc body is oval.

2. hoisting and hanging bow shackle according to claim 1, it is characterized in that: arc the oval-shaped major diameter of body section is the twice of minor axis.