CN103407875A

CN103407875A - Engineering sling

Info

Publication number: CN103407875A
Application number: CN2013103280635A
Authority: CN
Inventors: 仲炳华
Original assignee: SUZHOU LUNQIN INDUSTRIAL DESIGN CO LTD
Current assignee: SUZHOU LUNQIN INDUSTRIAL DESIGN CO LTD
Priority date: 2013-07-31
Filing date: 2013-07-31
Publication date: 2013-11-27

Abstract

The invention provides an engineering sling, which comprises a steel wire rope, wherein the steel wire rope has at least one section; a knot is wound at each end of each section; each section and two knots thereof are constrained in the interior of a spring component; the spring component comprises a spring and two rings fixed at two ends of the spring; the inner diameter of each ring is larger than the diameter of the steel wire rope, and is smaller than the maximum horizontal size of each knot; the rope structure is constrained by the inner diameter of each ring of the spring component, so that the knots and the sections are kept in the interior of the spring component; the length of the sections is larger than that of the spring under the normal condition, and smaller than the maximum length of the spring when stretched. The engineering sling can obviously weaken the temporary impact under emergency during hoisting or engineering, and has excellent work safety.

Description

The engineering hoist cable

Technical field

The present invention relates to the engineering mechanical device field, especially, relate to a kind of hoist cable of engineering for the engineering crane.

Background technology

In the engineering mechanical device field, crane is a kind of equipment commonly used, and the hoist cable on crane is the parts on basis the most; Current engineering hoist cable, the steel rope mainly become by braided steel wire forms, has higher tensile strength, but elasticity is poor, therefore, in the lifting process, hoist cable moment is mentioned weight, weight is moment acquisition ascending velocity almost, and therefore, the pulling force that hoist cable bears at short notice will be much larger than the weight of weight itself; On the other hand, when the engineering mechanical device et out of order, or in the situation of human negligence, weight drops rapidly, and suddenly by hoist cable, is hung the stopping time, and the pulling force that hoist cable bears is also very big, is easy to cause hoist cable to break, and causes engineering accident.

In view of above-mentioned situation, in the design of hoist cable, the temporary impact that reduces hoist cable has greater significance; Accordingly, making the standby elasticity of Current Collector Sleave, is a kind of mechanical technology means of routine, and conceivable is to adopt elasticity material making preferably hoist cable, or in hoist cable, be connected in series spring; Yet, due to the tensile strength of elastomeric material a little less than, when at hoist cable, continuing normally to work, be easy to be pulled off; And if in hoist cable, be connected in series spring, possibly spring is pulled out to elastic limit on the one hand, cause the spring collapse, cause major accident; On the other hand, when spring is not pulled out elastic limit, the lifted weight thing, due to continuous uncertain motion, will produce force of inertia to hoist cable, and this will make the spring continuous shaking, thereby make weight constantly vibration aloft, and this is also extremely dangerous; Therefore, how making hoist cable can resist moment impact, have again good safety, is a technical matters that difficulty is higher.

Summary of the invention

For the problems referred to above, the object of the present invention is to provide a kind of engineering hoist cable, the moment impact when this project hoist cable both can obviously weaken lifting or engineering accident, and have good job security.

The technical scheme that technical solution problem of the present invention adopts is: this project hoist cable comprises steel rope, on described steel rope, has a segmentation at least, and the two ends of this segmentation are wound with respectively a knot; Two knots at described segmentation and these segmentation two ends are constrained in the inside of a spring assembly; The ring that described spring assembly comprises spring and is fixed in this both ends of the spring; The internal diameter of described ring is greater than the diameter of described steel rope, and is less than the maximum transverse size of described knot, and the internal diameter of described spring assembly by described ring into about bundle, makes described knot and segmentation be held in spring assembly inside to described rope structure; The length of described segmentation is greater than the length under described spring state of nature, and the length when being less than described spring and being pulled to elastic limit.

As preferably, described spring assembly also comprises a pair of confinement tube, is individually fixed in the inboard of two described rings, and is in the inboard of described spring; The internal diameter of described confinement tube is greater than the diameter of described knot, while its role is to make described segmentation stretching gradually from the height case of bending, and isolation mutually between spring, with spring, card mutually not occurring squeezes phenomenon.

As the further improvement of above-mentioned optimal way, described a pair of confinement tube is by through magnetized ferromagnetics, forming, and this is relative to the confinement tube heteropole, thereby makes spring when retraction, and described a pair of confinement tube can be under the guiding of magnetic force, the mouth of pipe over against ground by adhesive; The mutual card further suppressed between the steel rope segmentation that may cause due to mal-position, confinement tube, spring squeezes.

Beneficial effect of the present invention is: this project hoist cable is in lifting, or impact is while stretching, due to the segmentation with a bending, therefore, at first this segmentation will be straightened, and, in stretching process, due to the described knot at these segmentation two ends, be subject to the constraint of the ring of described both ends of the spring, therefore, at first impulsive force on hoist cable will be applied on described spring, until described segmentation is straightened, after this, the gravity of weight is all provided by steel rope; As can be seen here, this project hoist cable is the moment when unexpected in lifting or engineering not only, possesses good cushion characteristic, prevents that steel rope moment is stressed too quickly, and can when normal operation, keep limp state, has avoided the weight vibration, keeps good safety.

The accompanying drawing explanation

Fig. 1 is embodiment mono-schematic diagram of this engineering hoist cable.

Fig. 2 is embodiment bis-schematic diagrams of this engineering hoist cable.

Fig. 3 is the schematic diagram under extended state embodiment illustrated in fig. 2.

The specific embodiment

The present invention is further described below in conjunction with drawings and Examples:

Embodiment mono-:

Figure 1 shows that embodiments of the invention one, in this embodiment, this project hoist cable comprises steel rope 1, on described steel rope 1, includes a segmentation 10, the two ends of this segmentation 10 be wound with respectively a knot 11,11 '; Two knots 11,11 ' at described segmentation 10 and these segmentation two ends are constrained in the inside of a spring assembly; Described spring assembly comprise spring 2 and be fixed in the

ring

3,3 of this both ends of the spring '; Described ring 3,3 ' internal diameter be greater than the diameter of described steel rope 1, and be less than the maximum transverse size of described knot, described spring assembly by described ring 3,3 ' internal diameter described knot 11,11 ' is formed to constraint, ' and segmentation 10 is held in spring assembly inside to make described

knot

11,11; The length of described segmentation 10 is greater than the length under described spring 2 state of nature, and the length when being less than described spring 2 and being pulled to elastic limit; Like this, when steel rope bore a heavy burden, described segmentation 10 was in the whole process by stretching gradually, and spring 2 will stretch gradually, and segmentation 10 fully stretching after, the length that draws high of spring 2 does not exceed elastic limit.

This engineering hoist cable is in lifting, or impact is while stretching, due to the segmentation 10 with a bending, therefore, at first this segmentation 10 will be straightened, and in stretching process, due to the constraint of the described

knot

11,11 at these segmentation two

ends ring

3,3 of described spring 2 two ends ' be subject to ', therefore, at first impulsive force on hoist cable will be applied on described spring 2, until described segmentation 10 is straightened, after this, the gravity of weight is all provided by steel rope; As can be seen here, this project hoist cable is the moment when unexpected in lifting or engineering not only, possesses good cushion characteristic, prevents that steel rope moment is stressed too quickly, and can when normal operation, keep limp state, has avoided the weight vibration, keeps good safety.

Embodiment bis-:

Figure 2 shows that embodiments of the invention two, the difference of itself and embodiment mono-is: described spring assembly also comprises the inboard of a pair of confinement tube 4,4 ', be individually fixed in two described rings 3,3 ', and is in the inboard of described spring 2; Described confinement tube 4,4 ' internal diameter be greater than described knot 11,11 ' diameter, diameter that can be using the horizontal maximum size of this knot as this knot, while its role is to make described segmentation 10 stretching gradually from the height case of bending, and card mutually, do not occur with spring 2 and squeeze phenomenon in isolation mutually between spring 2.It is worthy of note, after although spring is stretched, two confinement tube 4,4 ' between just start blankly, the time be straightened due to segmentation 10 is very short, ' inner curved section generally has little time to expand outwardly, and snaps in spring 2 originally to be restrained to confinement tube 4,4; On the other hand, stretching fast due to curved section, the sinuousness of segmentation also reduces rapidly, and therefore, segmentation 10 Once you begin stretches, just no longer easily snaps in spring.For embodiment bis-, the state when segmentation 10 is stretched fully as schematically shown in Figure 3.

For embodiment bis-, as preferably, described a pair of confinement tube 4,4 ' can be by through magnetized ferromagnetics, forming, and this is relative to the confinement tube heteropole, thereby while making spring 2 retraction, this to confinement tube 4,4 ' can be under the guiding of magnetic force, the mouth of pipe over against ground by adhesive; Further suppress the steel rope segmentation 10 that may cause due to mal-position, confinement tube 4,4 ', the mutual card between spring 2 squeezes.

The foregoing is only preferred mode of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. an engineering hoist cable, comprise steel rope (1), it is characterized in that: on described steel rope, have a segmentation (10) at least, the two ends of this segmentation are wound with respectively a knot (11,11 '); Two knots (11,11 ') at described segmentation (10) and these segmentation two ends are constrained in the inside of a spring assembly; The ring (3,3 ') that described spring assembly comprises spring (2) and is fixed in this both ends of the spring; The internal diameter of described ring is greater than the diameter of described steel rope (1), and be less than the described knot maximum transverse size of (11,11 '), (internal diameter of 3,3 ') forms constraint to described knot (11,11 ') to described spring assembly, makes described knot and segmentation be held in spring assembly inside by described ring; The length of described segmentation (10) is greater than the length under described spring (2) state of nature, and is less than the length of described spring (2) while being pulled to elastic limit.

2. engineering hoist cable according to claim 1 is characterized in that: described spring assembly also comprises that (4,4 '), be individually fixed in two described rings (inboard of 3,3 '), and be in the inboard of described spring (2) to a pair of confinement tube; (internal diameter of 4,4 ') is greater than the described knot (diameter of 11,11 ') to described confinement tube.

3. engineering hoist cable according to claim 2, it is characterized in that: (4,4 ') is by through magnetized ferromagnetics, forming, and this is relative to the confinement tube heteropole for described a pair of confinement tube.