CN107447561B - Suspender structural member and processing method - Google Patents
Suspender structural member and processing method Download PDFInfo
- Publication number
- CN107447561B CN107447561B CN201710780274.0A CN201710780274A CN107447561B CN 107447561 B CN107447561 B CN 107447561B CN 201710780274 A CN201710780274 A CN 201710780274A CN 107447561 B CN107447561 B CN 107447561B
- Authority
- CN
- China
- Prior art keywords
- sub
- rope
- structural member
- sling
- bearing core
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/16—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics
- D07B1/162—Ropes or cables with an enveloping sheathing or inlays of rubber or plastics characterised by a plastic or rubber enveloping sheathing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/18—Band-type slings
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
- D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
Abstract
The invention discloses a sling structural member and a processing method, wherein the sling structural member comprises a sheath and a bearing core arranged in the sheath, the bearing core comprises a plurality of sub-ropes, each sub-rope comprises a plurality of mutually parallel tows, each tow is formed by mutually winding and twisting filaments, and each filament is made of ultra-high molecular weight polyethylene plastic material; the processing method of the sling structural member comprises the steps of raw material wire detection, processing of tows, processing of sub-ropes, sub-rope treatment, sub-rope pre-stretching, processing of a bearing core, integral stretching of the bearing core, stitching of a sheath and completion of manufacturing of the sling structural member. The sling structural member has stronger strength like a common steel wire rope, is also bent at will like the conventional common plastic rope, has wide adaptability, can meet the load of the weight of the oversized member, is convenient, simple and reliable in leveling, and ensures the stability of the oversized member during hoisting; the processing method of the sling structural member is used for screening the sub-rope and the bearing core through tensile tests respectively, so that the precision of the sling structure is ensured.
Description
Technical Field
The invention relates to the technical field of hoisting, in particular to a sling structural member and a processing method thereof.
Background
Existing large structural members, such as structural members exceeding hundreds of thousands of tons, are generally moved and installed in a hoisting manner. When the installation of the large structural member is involved, the structural member is stably and reliably hoisted when being hoisted by the crane for a long time, and the installation progress of the structural member is directly influenced.
The existing hoisting mode generally adopts a steel wire rope, a steel cable or a common rope as a hoisting tool, specifically one end of the hoisting tool is connected with a hook of a crane, the other end of the hoisting tool is connected with a lifting lug of a large-sized structural member, and the hoisting tool needs to be leveled to ensure that the lifting lugs are uniformly stressed, so that the large-sized structural member can be stably maintained during hoisting. Because this structure exceeds hundred tons, the weight is great, in order to guarantee hoist intensity, generally adopt simple increase hoist diameter, but the result of this is: the ordinary steel wire rope and steel cable are difficult to bend because of higher rigidity, so that when the steel wire rope and the steel cable are connected with a crane hook and a lifting lug of a large-sized structural member, the leveling is difficult, and a great amount of time is required for carrying out the hoisting preparation work; the common plastic rope has smaller tensile strength, the rope is easily elongated when being subjected to long-time load during long-time hoisting, and if the length-to-length ratio is larger, the positions of the rope ends connected with different lifting lugs are easily changed, so that the stability of the large structural member is finally affected.
Disclosure of Invention
The invention aims to overcome the defects that in the prior art, in order to ensure the strength of a lifting appliance and the lifting stability of the large structural part, a common steel wire rope and a steel cable are adopted, the leveling is difficult due to high rigidity and difficult bending, and the lifting stability is influenced due to the fact that the common plastic rope is low in strength and easy to be elongated during lifting, and provides a sling structural part and a processing method of the sling structural part.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a suspender structure, includes the sheath and locates the bearing core in the sheath, the bearing core includes a plurality of sub-ropes, and every sub-rope includes a plurality of silk bundle that is parallel to each other, every the silk bundle is formed by the silk of intertwining the twist, and every silk is ultra-high molecular weight polyethylene plastics material.
The sling structural member adopts a sheath and a bearing core sleeved in the sheath, wherein the bearing core comprises a plurality of sub-ropes, each sub-rope is composed of a plurality of filament bundles which are mutually parallel, each filament bundle is formed by mutually winding and twisting filaments, and as each filament adopts an ultra-high molecular weight polyethylene plastic material (UHMW-PE for short), the ultra-high molecular weight polyethylene is an unbranched linear polyethylene with the molecular weight of more than 150 ten thousand, and the sling structural member is a thermoplastic engineering plastic with excellent comprehensive performance and super-strong wear resistance, self-lubricity, high strength, stable chemical property and strong ageing resistance; the tows manufactured by the method can have stronger strength like a common steel wire rope, can bear large load, and simultaneously has the advantages that the conventional common plastic rope is convenient to bend, the adaptability is wide, the hanging belt manufactured by the tows can meet the load of the weight of the super-large component when being used for connecting a crane and the super-large component, and the tows are convenient to adjust at any time in the hoisting process to level the super-large component, so that the super-large component can be kept stable during hoisting, and the installation efficiency of the super-large component is improved.
Preferably, each sub-cable has a ring-shaped structure.
Because the oversized component that should bear by this bearing core is great in weight, directly make the sub-rope of bearing core into the structure of ring shape, avoid two ends of straight sub-rope to follow-up still need connect, reduced the bearing core preparation process, the sub-rope does not have the uneven defect of stress distribution of tip moreover, its intensity is better.
Preferably, all the sub-cables have the same length and are arranged side by side.
Preferably, each sub-rope is provided with a plurality of binding bands along the length direction, and each binding band binds the tows forming the sub-rope with each other, so that when the sling is used, each sub-rope in the sling can be kept under axial tension, and torsion caused by mutual winding is not avoided, and the use of the sling is prevented from being influenced by mutual winding of the sub-ropes.
Preferably, each strand has a diameter of 4-10mm to ensure the cohesion and strength of several filaments twisted together with each other in the strand.
Preferably, the sheath comprises an outer layer sleeve and an inner layer sleeve, wherein the outer layer sleeve and the inner layer sleeve are both soft plastics and are mutually sewn and connected.
The sheath can be a wear-resistant barrel belt sleeve and is divided into two layers, wherein the inner layer sleeve is a protective sleeve for bearing the core, and the outer layer sleeve is a sling protective sleeve, wherein the sheath is not bearing, and mainly plays a role in protecting the bearing core.
Further preferably, two hook mark lines are arranged on the surface of the outer layer sleeve along the circumferential direction, and anti-torsion mark lines are arranged on the surface of the outer layer sleeve along the longitudinal direction.
Because the oversized member is large in size and weight, the adopted hanging strip is very huge, the diameter of the hanging strip can reach tens of centimeters or even exceed one meter, and for the hanging strip with the oversized diameter, the weight of the hanging strip is very huge, and the hanging strip can be hung and adjusted by one person; therefore, in order to facilitate hanging and adjustment of the hanging belt and improve efficiency, two hook mark lines are arranged on the middle surface of the hanging belt sheath, if green is arranged, a constructor can accurately find the middle position of the hanging belt when the constructor is cooperated to hang the hanging belt on a hook; meanwhile, in order to avoid the torque force generated by artificial rotation of the sling during hanging, the sling is kept in a natural extension state, and an anti-torsion marking line, such as a yellow line, is arranged on the surface of the sling sheath along the axial direction, so that whether the sling is twisted during hanging or not is conveniently judged, the sling can be adjusted in advance, and subsequent and smooth lifting is facilitated.
The invention also provides a processing method of the sling structural member, which comprises the following steps:
step one, raw material silk detection, namely selecting an ultra-high molecular weight polyethylene plastic raw material meeting the strength requirement to manufacture silk;
step two, processing the silk bundle, and twisting a plurality of silk yarns by intertwining to form the silk bundle meeting the requirements of the required diameter and length;
step three, processing the sub-rope, namely selecting a plurality of tows to be mutually arranged and bound together to form a sub-rope;
step four, sub-rope treatment, namely coating resin on the surface of the sub-rope and drying the sub-rope;
fifthly, pre-stretching the sub-cables, pre-stretching the two ends of each sub-cable by applying loading force, and after unloading, performing size checking on the length of each sub-cable, and selecting the sub-cables with the length elongation meeting the precision requirement;
step six, processing a bearing core, and selecting a plurality of sub-cables meeting the precision requirement in the step six to form the bearing core;
step seven, carrying out integral stretching on the bearing cores, applying loading force to each bearing core to integrally stretch the two ends of each bearing core, and after unloading, carrying out size correction on the length of each bearing core, and selecting the bearing core meeting the requirement on elongation precision;
and step eight, sewing a sheath on the outer surface of the bearing core meeting the precision requirement in the step eight, and finishing the manufacturing of the sling structural member.
The processing method of the sling structural member comprises the steps of detecting raw material wires to screen wires with a composite strength requirement, then mutually winding and twisting the raw material wires to form tows with a composite length requirement, further forming a plurality of tows into sub-ropes, performing a pre-stretching test on different sub-ropes, selecting sub-ropes meeting a dimensional precision requirement according to the length elongation of each sub-rope, forming a bearing core by the selected sub-ropes, performing an integral stretching test on the bearing core, screening the bearing core meeting the dimensional precision requirement again, and finally taking the bearing core as a required sling; according to the processing method of the sling structure, materials meeting the strength requirement are screened from raw materials, and the sub-ropes and the final bearing cores which form the structure are respectively tested to screen the bearing cores meeting the elongation requirement, so that the sling structure is controlled to have the strength capable of meeting the hoisting of the oversized member, the length elongation of the sling structure can be controlled to be 0.1% of precision under the load action of the oversized member, the sling structure can be conveniently leveled during hoisting, the stability of the oversized member can be effectively guaranteed, and the reliability is high.
Preferably, a stretching structural member is adopted when the sub-rope is pre-stretched in the step six, the stretching structural member comprises a bottom plate and a loader, a sliding groove is formed in the bottom plate, a sliding block is movably connected to the sliding groove, and a rotating shaft is arranged on the sliding block; when the sub-rope is pre-stretched, one end of the sub-rope bypasses the rotating shaft on the sliding block, the other end of the sub-rope is connected with the loading machine, the sliding block is fixed on the sliding groove after the sliding block is adjusted to enable the sub-rope to be in a straight state, and the pre-stretching test of the sub-rope can be carried out by starting the loading machine.
The stretching structural member adopted in the step six fully simulates the middle part of the hanging strip of the lifting hook, and the two ends of the hanging strip are connected with the stress condition of the ear plates of the oversized structural member, so that the situation is close to the actual situation when the hanging strip is tested, the test result can fully embody the performance index of each hanging strip, and each bearing core meeting the requirements is convenient to screen.
Preferably, when the step six-neutron cable is pre-stretched, after each of the sub-cables is loaded with a constant load for several times, the average elongation value is measured as the final elongation value, wherein the duration of each constant load is at least greater than 300s.
Preferably, when the whole bearing core is stretched in the step eight, each bearing is loaded by adopting a load which is gradually increased, the loading force which is constant is kept for each loading for at least 10min, and the elongation of the corresponding bearing core is recorded; and comparing the loading data of all the bearing cores, and selecting the bearing cores with all the data meeting the requirement of the extension precision of the hanging belt to process the hanging belt.
The test process can fully meet the influence of oversized members with different structures, sizes and weights on the strength and length stretching amount of the hanging strip, and is convenient to select and accords with the hoisting requirement of the oversized members under the condition of no use.
Compared with the prior art, the invention has the beneficial effects that:
1. the sling structural member adopts a sheath and a bearing core sleeved in the sheath, wherein the bearing core comprises a plurality of sub-ropes, each sub-rope is composed of a plurality of filament bundles which are mutually parallel, each filament bundle is formed by mutually winding and twisting filaments, and as each filament is made of ultra-high molecular weight polyethylene plastic material, the ultra-high molecular weight polyethylene plastic material refers to unbranched linear polyethylene with the molecular weight of more than 150 ten thousand, and is thermoplastic engineering plastic with excellent comprehensive performance and super-strong wear resistance and self-lubrication property, and has high strength, stable chemical property and strong ageing resistance; the tows manufactured by the method have stronger strength like a common steel wire rope, can bear large load, are convenient to bend like the conventional common plastic rope, have wide adaptability, can meet the load of the weight of the oversized member when being used for connecting a crane and the oversized member, and are convenient to adjust at any time in the hoisting process to level the oversized member so as to keep stability of the oversized member during hoisting, and improve the installation efficiency of the oversized member;
2. according to the sling structural part, the plurality of binding belts are arranged on each sub-rope along the length direction, and each binding belt binds the tows forming the sub-rope, so that when the sling is used, each sub-rope in the sling can be kept under axial tension, but not torsion caused by mutual winding, and the influence on the use of the sling caused by mutual winding of the sub-ropes is avoided;
3. the processing method of the sling structural member comprises the steps of detecting raw material wires to screen wires with the requirement of composite strength, then intertwining and twisting the wires to form tows with the requirement of composite length, further forming a plurality of tows into sub-ropes, pre-stretching the different sub-ropes, selecting sub-ropes meeting the requirement of dimensional accuracy according to the length elongation of each sub-rope, forming a bearing core by the selected sub-ropes, then carrying out an integral tensile test on the bearing core, screening the bearing core meeting the requirement of dimensional accuracy again, and finally taking the bearing core as a required sling; according to the processing method of the sling structure, materials meeting the strength requirement are screened from raw materials, and the sub-ropes and the final bearing cores which form the structure are respectively tested to screen the bearing cores meeting the elongation requirement, so that the sling structure is controlled to have the strength capable of meeting the hoisting of the oversized member, the length elongation of the sling structure can be controlled to be 0.1% of precision under the load action of the oversized member, the sling structure can be conveniently leveled during hoisting, the stability of the oversized member can be effectively ensured, and the reliability is high;
4. according to the processing method of the sling structure, the tensile structure is adopted to carry out tensile test on each sub-rope, the condition that the middle part of a sling is hung by a lifting hook is fully simulated, and the two ends of the sling are connected with the ear plates of the oversized member is stressed, so that the situation is close to the actual condition during test, the test result can fully reflect the performance index of each sling, and each bearing core meeting the requirements is conveniently screened.
Description of the drawings:
FIG. 1 is a schematic view of a harness structure according to the present invention;
FIG. 2 is a schematic view of a portion of the harness structure of FIG. 1;
FIG. 3 is a schematic view of a sub-cord of the harness structure of FIG. 1;
FIG. 4 is a schematic view of the sheath of the harness structure of FIG. 1;
FIG. 5 is a force diagram of a strap structure of the present invention for an overall tensile test during processing;
FIG. 6 is a schematic illustration of a strap structure of the present invention as it is being processed for an overall tensile test using a tensile structure;
fig. 7 is a flowchart of a method for manufacturing a strap structure according to the present invention.
The marks in the figure:
1. the sling structure comprises a sling structure member, 11, a sheath, 111, an outer layer sleeve, 112, an inner layer sleeve, 12, a bearing core, 121, a sub-rope, 13, a hook marking line, 14, an anti-torsion marking line, 2, a bottom plate, 3, a sliding chute, 4, a loader, 5, a sliding block, 6, a rotating shaft, 7 and a binding belt.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should not be construed that the scope of the above subject matter of the present invention is limited to the following embodiments, and all techniques realized based on the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-2, a sling structural member 1 comprises a sheath 11 and a carrying core 12 arranged in the sheath 11, wherein the carrying core 12 comprises a plurality of sub-ropes 121, each sub-rope 121 comprises a plurality of mutually parallel tows, each tow is formed by mutually winding and twisting filaments, and each filament is made of ultra-high molecular weight polyethylene plastic material.
The carrier cores 12 are identical in length and are arranged side by side. Each sub-rope 121 is provided with a plurality of binding tapes 7 along the length direction, as shown in fig. 3, the binding tapes can be adhesive tapes, and each binding tape 7 binds all tows forming the sub-rope 121 with each other at a certain distance, so that each sub-rope 121 in the inner part of the sub-rope can be kept under axial tension when the sling is used, and torsion caused by mutual winding can not occur, thereby avoiding the influence on the use of the sling caused by mutual winding of the sub-ropes 121. In particular, each of the tows constituting the sub-cord 121 has a diameter of 4-10mm to ensure the cohesion forming and strength requirements of several filaments twisted together with each other in the tows.
Because the weight of the oversized component needed to be borne by the bearing core 12 is large, the sub-rope 121 of the bearing core 12 is directly made into a ring-shaped structure, the subsequent connection of two ends of the linear sub-rope 121 is avoided, the manufacturing process of the bearing core 12 is reduced, the defect of uneven stress distribution of the end parts of the sub-rope 121 is avoided, and the strength is better.
The sheath 11 includes an outer layer 111 and an inner layer 112, as shown in fig. 4, the outer layer 111 and the inner layer 112 are made of soft plastic and are connected by stitching. The sheath 11 may be a wear-resistant sleeve with a sleeve, and is divided into two layers, wherein the inner sleeve 112 is a protective sleeve for the bearing core 12, and the outer sleeve 111 is a sling protective sleeve, and the sheath 11 is not load-bearing and mainly plays a role in protecting the bearing core 12.
The sling structural member 1 adopts a sheath 11 and a bearing core 12 sleeved in the sheath 11, wherein the bearing core 12 comprises a plurality of sub-ropes 121, each sub-rope 121 is composed of a plurality of filament bundles which are mutually parallel, each filament bundle is formed by mutually winding and twisting filaments, and as each filament adopts an ultra-high molecular weight polyethylene plastic material (UHMW-high molecular weight polyethylene for short), the ultra-high molecular weight polyethylene is unbranched linear polyethylene with the molecular weight of more than 150 ten thousand, and is a thermoplastic engineering plastic with excellent comprehensive performance and super-strong wear resistance, self-lubricity, high strength, stable chemical property and strong ageing resistance; the tows manufactured by the method can have stronger strength like a common steel wire rope, can bear large load, and simultaneously has the advantages that the conventional common plastic rope is convenient to bend, the adaptability is wide, the hanging belt manufactured by the tows can meet the load of the weight of the super-large component when being used for connecting a crane and the super-large component, and the tows are convenient to adjust at any time in the hoisting process to level the super-large component, so that the super-large component can be kept stable during hoisting, and the installation efficiency of the super-large component is improved.
Considering that the object used by the sling structure is an oversized member, the size and the weight of the sling structure are large and can reach hundreds of tons, the adopted sling is very huge, the diameter of the sling can reach tens of centimeters or even more than one meter, and the weight of the sling with the oversized diameter is very huge, so that the sling can be hung and adjusted by not being simple by one person; therefore, in order to facilitate hanging and adjustment of the hanging belt and improve efficiency, two hook mark lines 13 are arranged on the middle surface of the hanging belt sheath 11, if green is arranged, then constructors can accurately find the middle position of the hanging belt when the constructors hang the hanging belt on the hooks in a matching way; meanwhile, in order to prevent the hanging belt from generating torque force due to artificial rotation during hanging, the hanging belt is kept in a natural extension state, and an anti-torsion marking line 14, such as a yellow line, is arranged on the surface of the hanging belt sheath 11 along the axial direction, so that whether the hanging belt is twisted during hanging is conveniently judged, the hanging belt can be adjusted in advance, and subsequent and smooth hanging is facilitated.
Example 2
As shown in fig. 5-7, the invention also provides a processing method of the sling structural member 1, which comprises the following steps:
step one, raw material silk detection, namely selecting an ultra-high molecular weight polyethylene plastic raw material meeting the strength requirement to manufacture silk;
step two, processing the silk bundle, and twisting a plurality of silk yarns by intertwining to form the silk bundle meeting the requirements of the required diameter and length;
step three, processing the sub-rope 121, and selecting a plurality of tows to be mutually arranged and bound together to form a sub-rope 121;
step four, sub-rope 121 is processed, resin is coated on the surface of sub-rope 121, and drying treatment is carried out;
fifthly, pre-stretching the sub-ropes 121, pre-stretching the two ends of each sub-rope 121 by applying loading force, and after unloading, performing size correction on the length of each sub-rope 121, and selecting the sub-ropes 121 with the length extension of the sub-ropes 121 meeting the precision requirement;
step six, processing the bearing core 12, and selecting a plurality of sub-cables 121 meeting the precision requirement in the step six to form the bearing core 12;
step seven, integrally stretching the bearing cores 12, wherein loading force is applied to each bearing core 12 to integrally stretch the two ends of the bearing core, and as shown in fig. 5, one end of the bearing core is fixed, and loading force F is applied to the other end of the bearing core to stretch the bearing core; after unloading, performing size correction on the length of each bearing core 12, and selecting the bearing core 12 meeting the requirement of elongation precision;
and step eight, sewing the sheath 11 on the outer surface of the bearing core 12 meeting the precision requirement in the step eight, namely sewing the inner layer sleeve 112 and the outer layer sleeve 111, and simultaneously sewing the hook mark line 13 and the anti-torsion mark line 14 on the surface of the outer layer sleeve 111, wherein the hook mark line 13 is an annular plastic cloth strip, and the anti-torsion mark line 14 is two through-length plastic cloth strips which are oppositely arranged along the axial direction of the outer layer sleeve 111, so as to finally finish the manufacturing of the sling structural member 1.
In the sixth step, a stretching structural member is adopted when the sub-rope 121 is pre-stretched, as shown in fig. 6, the stretching structural member comprises a bottom plate 2 and a loader 4, wherein two sliding grooves 3 made of i-steel are arranged on the bottom plate 2, sliding blocks 5 are movably connected to the two sliding grooves 3, and a rotating shaft 6 is arranged on the sliding blocks 5; when the sub-rope 121 is pre-stretched, the sub-rope 121 bypasses the rotating shaft 6 on the sliding block 5, the other end of the sub-rope 121 is connected with the hook of the loader 4, after the sliding block 5 is adjusted to enable the sub-rope 121 to be in a straightened state, the sliding block 5 is fixed on the sliding groove 3, the loader 4 is started to apply load force to stretch, the sub-rope 121 can be pre-stretched, the lengths of the sub-ropes 121 are measured respectively in the stretching process and after the stretching is finished, and data summarization is recorded.
The stretching structural member adopted in the step six fully simulates the middle part of the hanging strip of the lifting hook, and the two ends of the hanging strip are connected with the stress condition of the ear plates of the oversized structural member, so that the situation is close to the actual situation when the hanging strip is tested, the test result can fully embody the performance index of each hanging strip, and each bearing core 12 meeting the requirements is convenient to screen. In addition, when the sub-ropes 121 are pre-stretched, after loading each of the sub-ropes 121 several times by using a constant load, an average elongation value is measured as a final elongation value, wherein the duration of each constant load loading is at least greater than 300s.
In the step seven, a plurality of sling structural members 1 are generally adopted by the crane, each sling structural member 1 comprises a plurality of sub-ropes 121, and substantially when the sub-ropes 121 are manufactured, because the lengths of the sub-ropes 121 can reach tens of meters, it is difficult to manufacture all the sub-ropes 121 to be completely consistent in length, and a length processing error is unavoidable, so in order to match the sub-ropes 121 to each sling structural member 1, the sub-ropes 121 of all the sling structural members 1 meeting the conditions are firstly distributed to each sling structure in a staggered manner according to the sequence from small to large; specifically, if 4 sling structure members 1 are needed, the 1 st, 5, 9, 13 … … n+1 number of the sub-cables 121 from the small sling structure members 1 are distributed to the first sling structure member 1 according to the lengths, the 2 nd, 6, 10, 14 … … 4n+2 number of the sub-cables 121 are distributed to the second sling structure member 1, the 3 rd, 7, 11, 15 … … 4n+3 number of the sub-cables 121 are distributed to the third sling structure member 1, the 4 th, 8 th, 12, 16 … … 4n+4 number of the sub-cables 121 are distributed to the fourth sling structure member 1, wherein n is the number of the sub-cables 121 needed by each sling structure member 1, and according to the actual selection, the number of the sub-cables 121 contained by each sling structure member 1 and the length errors of the number of the sub-cables 121 are matched, so that the influence on hoisting caused by the length errors of the sub-cables 121 is reduced; in addition, when the carrier core 12 is stretched as a whole, the number of sub-cords 121 is large, and the sub-cords 121 are arranged in the order of being stacked from bottom to top, and a tensile test of the carrier core 12 is performed.
In the eighth step, when the whole load-bearing core 12 is stretched, each load is loaded by adopting a gradually increasing load, for example, a loading force of 100t is increased each time, a constant loading force is maintained for loading for at least 10min each time, and the elongation of the load-bearing core 12 corresponding to each time is recorded; by comparing the loading data of all the load cores 12, the load cores 12 with all the data meeting the requirement of the elongation precision of the sling are selected to process the sling. The test process can fully meet the influence of oversized members with different structures, sizes and weights on the strength and length stretching amount of the hanging strip, and is convenient to select and accords with the hoisting requirement of the oversized members under the condition of no use.
The processing method of the sling structural member 1 comprises the steps of detecting raw material wires to screen wires with a composite strength requirement, then mutually winding and twisting the raw material wires to form tows with a composite length requirement, further forming a plurality of tows into sub-ropes 121, then pre-stretching the different sub-ropes 121, selecting the sub-ropes 121 meeting the size precision requirement according to the length elongation of each sub-rope 121, forming a bearing core 12 by the selected sub-ropes 121, then carrying out an integral stretching test on the bearing core 12, screening the bearing core 12 meeting the size precision requirement again, and finally taking the bearing core 12 as a required sling; according to the processing method of the sling structure, materials meeting the strength requirement are screened from raw materials, and the sub-ropes 121 and the final bearing cores 12 which form the structure are respectively tested to screen the bearing cores 12 meeting the elongation requirement, so that the sling structure 1 is controlled to have strength capable of meeting the lifting of an oversized member, and the length elongation of the sling structure 1 can be controlled to be 0.1% of precision under the load action of the oversized member, for example, the sling structure 1 with the length of 60 meters can meet the tensile length variation within the range of +/-5 cm; the hoisting device not only can be used for conveniently leveling during hoisting, but also can be used for effectively ensuring the stability of the oversized component, and is high in reliability.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (9)
1. The sling structural member (1) is characterized by comprising a sheath (11) and a bearing core (12) arranged in the sheath (11), wherein the bearing core (12) comprises a plurality of sub-cables (121), each sub-cable (121) comprises a plurality of mutually parallel tows, each tow is formed by mutually winding and twisting filaments, and each filament is made of ultra-high molecular weight polyethylene plastic; the diameter of each silk bundle is 4-10mm, and the diameter of the sling structural member (1) is one meter; each sub-rope (121) is provided with a plurality of binding belts (7) along the length direction, and each binding belt (7) binds tows forming the sub-rope (121) with each other.
2. A harness structure (1) according to claim 1, wherein each of the sub-cables (121) is of annular configuration.
3. A harness structure (1) according to claim 1, wherein all of the sub-cords (121) are of the same length and are arranged side by side.
4. A harness structure (1) according to any one of claims 1-3, wherein the sheath (11) comprises an outer sheath (111) and an inner sheath (112), the outer sheath (111) and the inner sheath (112) being of flexible plastics and being connected by stitching.
5. A harness structure (1) according to claim 4, characterized in that the surface of the outer sleeve (111) is provided with two hooking mark lines (13) in the circumferential direction, and the surface of the outer sleeve (111) is provided with anti-twisting mark lines (14) in the longitudinal direction.
6. A method of processing a strap structural member (1), comprising the steps of:
step one, raw material silk detection, namely selecting an ultra-high molecular weight polyethylene plastic raw material meeting the strength requirement to manufacture silk;
step two, processing tows, and twisting a plurality of filaments by intertwining to form tows meeting the requirements of the required diameter and length, wherein the diameter of each tow is 4-10mm;
step three, processing the sub-rope (121), and selecting a plurality of tows to be mutually arranged and bound together to form a sub-rope (121);
fourthly, processing the sub-rope (121), coating resin on the surface of the sub-rope (121), and drying;
fifthly, pre-stretching the sub-ropes (121), pre-stretching the two ends of each sub-rope (121) by applying loading force, and after unloading, performing size calibration on the length of each sub-rope (121), and selecting the sub-rope (121) with the length elongation meeting the precision requirement;
step six, processing a bearing core (12), and selecting a plurality of sub-cables (121) meeting the precision requirement in the step six to form the bearing core (12);
step seven, integrally stretching the bearing cores (12), applying loading force to each bearing core (12) to integrally stretch the two ends of the bearing cores, and after unloading, performing size calibration on the length of each bearing core (12), and selecting the bearing core (12) meeting the elongation precision requirement;
and step eight, sewing a sheath (11) on the outer surface of the bearing core (12) meeting the precision requirement in the step eight, and finishing the manufacturing of the sling structural member (1), wherein the diameter of the sling structural member (1) is one meter.
7. The processing method of the sling structural member (1) according to claim 6, wherein in the fifth step, a stretching structural member is adopted when the sub-rope (121) is pre-stretched, the stretching structural member comprises a bottom plate (2) and a loader (4), a sliding groove (3) is arranged on the bottom plate (2), a sliding block (5) is movably connected on the sliding groove (3), and a rotating shaft (6) is arranged on the sliding block (5); when the sub-rope (121) is pre-stretched, one end of the sub-rope (121) bypasses a rotating shaft (6) on the sliding block (5), the other end of the sub-rope (121) is connected with the loading machine (4), the sliding block (5) is adjusted to enable the sub-rope (121) to be in a stretched state, then the sliding block (5) is fixed on the sliding groove (3), and the pre-stretching test of the sub-rope (121) can be carried out by starting the loading machine (4).
8. The method of manufacturing a strap structure (1) according to claim 6, characterized in that, when the sub-cables (121) are pre-tensioned in the step five, an average elongation value is measured as a final elongation value after each sub-cable (121) has been loaded several times by using a constant load, wherein the duration of each constant load is at least 300s.
9. The method for processing the sling structural member (1) according to claim 6, wherein in the seventh step, when the carrying cores (12) are integrally stretched, each carrying core (12) is loaded with progressively increasing loads, each loading keeps constant loading force for at least 10min, and the elongation of each loading corresponding to the carrying core (12) is recorded; the loading data of all the bearing cores (12) are compared, and the bearing cores (12) with all the data meeting the requirement of the elongation precision of the hanging belt are selected to process the hanging belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780274.0A CN107447561B (en) | 2017-09-01 | 2017-09-01 | Suspender structural member and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710780274.0A CN107447561B (en) | 2017-09-01 | 2017-09-01 | Suspender structural member and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107447561A CN107447561A (en) | 2017-12-08 |
| CN107447561B true CN107447561B (en) | 2023-08-22 |
Family
ID=60493515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710780274.0A Active CN107447561B (en) | 2017-09-01 | 2017-09-01 | Suspender structural member and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107447561B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562843B (en) * | 2019-08-29 | 2024-02-02 | 泰州力虎工具有限公司 | Long-distance double-end buckle annular sling production line and production method thereof |
| WO2022099751A1 (en) * | 2020-11-14 | 2022-05-19 | 昆山普瑞德电子有限公司 | Adjustable sling convenient to use |
| CN112432856B (en) * | 2020-11-27 | 2022-09-09 | 青岛鲁普耐特绳网研究院有限公司 | Mooring fiber cable with precise mooring length and method for obtaining same |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049226A1 (en) * | 2004-11-02 | 2006-05-11 | Toray International, Inc. | Fiber sling and method for evaluating its performance |
| CN201172575Y (en) * | 2008-02-19 | 2008-12-31 | 葫芦岛天力工业有限公司 | Polyethylene fiber hoisting belt |
| CN104085154A (en) * | 2013-06-20 | 2014-10-08 | 郑州中远防务材料有限公司 | Flat lifting belt and preparation method thereof |
| CN104088177A (en) * | 2013-06-20 | 2014-10-08 | 郑州中远防务材料有限公司 | Rigging and preparation method thereof |
| CN104762843A (en) * | 2015-04-15 | 2015-07-08 | 泰州宏达绳网有限公司 | Offshore underwater component device mooring cable and manufacturing method thereof |
| CN205442387U (en) * | 2016-04-22 | 2016-08-10 | 江苏曼杰克有限公司 | Double -barrelled suspender that excels in |
| CN205555850U (en) * | 2016-03-16 | 2016-09-07 | 张逍 | High fine non junction rigidity hoist cable |
| CN106066278A (en) * | 2016-06-17 | 2016-11-02 | 上海电缆研究所 | Composite rope is carried out the tension winding method of test assessment |
| CN207130526U (en) * | 2017-09-01 | 2018-03-23 | 中交第一航务工程局有限公司 | A kind of sling structure part |
-
2017
- 2017-09-01 CN CN201710780274.0A patent/CN107447561B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006049226A1 (en) * | 2004-11-02 | 2006-05-11 | Toray International, Inc. | Fiber sling and method for evaluating its performance |
| CN201172575Y (en) * | 2008-02-19 | 2008-12-31 | 葫芦岛天力工业有限公司 | Polyethylene fiber hoisting belt |
| CN104085154A (en) * | 2013-06-20 | 2014-10-08 | 郑州中远防务材料有限公司 | Flat lifting belt and preparation method thereof |
| CN104088177A (en) * | 2013-06-20 | 2014-10-08 | 郑州中远防务材料有限公司 | Rigging and preparation method thereof |
| CN104762843A (en) * | 2015-04-15 | 2015-07-08 | 泰州宏达绳网有限公司 | Offshore underwater component device mooring cable and manufacturing method thereof |
| CN205555850U (en) * | 2016-03-16 | 2016-09-07 | 张逍 | High fine non junction rigidity hoist cable |
| CN205442387U (en) * | 2016-04-22 | 2016-08-10 | 江苏曼杰克有限公司 | Double -barrelled suspender that excels in |
| CN106066278A (en) * | 2016-06-17 | 2016-11-02 | 上海电缆研究所 | Composite rope is carried out the tension winding method of test assessment |
| CN207130526U (en) * | 2017-09-01 | 2018-03-23 | 中交第一航务工程局有限公司 | A kind of sling structure part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107447561A (en) | 2017-12-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107447561B (en) | Suspender structural member and processing method | |
| US9296593B2 (en) | Multi part synthetic eye and eye sling | |
| EP2203374B1 (en) | Synthetic sling whose component parts have opposing lays | |
| EP2544527B1 (en) | Fluoropolymer fiber composite bundle | |
| US10487448B2 (en) | Steel cord with reduced residual torsions | |
| CN106948177A (en) | Coated high strength fibre | |
| US10962145B2 (en) | Transportation of parallel wire cable | |
| KR20140115300A (en) | Rope comprising at least one fibrillated film tape | |
| KR100992580B1 (en) | Method for manufacturing wire rope sling, and wire rope sling manufactured by the same | |
| CN105256622A (en) | Splicing method of ultrahigh high molecular weight polyethylene fiber rope ring plate sling | |
| JP2018529853A (en) | Composite long body | |
| JP2022133266A (en) | Chain with endless braided chain-link | |
| US20210356018A1 (en) | Heavy-duty hoist chain | |
| US8117816B2 (en) | Multifilament and method for manufacturing the same, and yarn and method for manufacturing the same | |
| CN207130526U (en) | A kind of sling structure part | |
| CN1965126B (en) | Metal cord for reinforcing rubber article and method of manufacturing the cord | |
| Banfield et al. | Fatigue durability of nylon rope for permanent mooring design | |
| WO2020016461A1 (en) | Roundsling | |
| KR101720943B1 (en) | Method for wire rope sling | |
| CN117916415A (en) | Composite elongated body | |
| AU2015202643B2 (en) | Fluoropolymer fiber composite bundle | |
| Kirth et al. | Further developments of synthetic ropes for logging applications in forestry | |
| JP2020172720A (en) | Leveling line for civil engineering work or construction work and method for producing the same | |
| KR20180040062A (en) | Method for wire rope sling | |
| JP2015214770A (en) | Steel cord and method for producing the same, and conveyor belt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |