Ultrahigh molecular weight polyethylene stepless winding lifting belt and preparation method thereof

Abstract

The invention belongs to the technical field of sling manufacturing and application, and particularly discloses an ultra-high molecular weight polyethylene stepless winding lifting belt and a preparation method thereof, the ultra-high molecular weight polyethylene stepless winding lifting belt comprises an inner core material and a protective sleeve; the inner core materials are arranged in a triangular form in which n groups are arranged in a two-lower and one-upper manner, and are combined into a whole group; the protective sleeve is a full-wrapping protective sleeve and wraps the inner core material in a sewing mode. The ultra-high molecular weight polyethylene stepless winding lifting belt and the preparation method thereof have the beneficial effects that 1, the structural composition is reasonable, on one hand, the product structure is optimized, and on the other hand, the manufacturing process is optimized; and 2, when the super-tonnage lifting belt is manufactured, the manufacturing process is simpler, more accurate, more efficient and easier to operate, errors caused by manual winding are reduced, a shaping link is also omitted, the super-tonnage lifting belt is directly formed in a penetrating mode in an electrodeless winding mode, the core materials are arranged in a triangular mode in which n groups are arranged in a two-down and one-up mode, finally the core materials are combined into a whole group, and the structure is more stable.

Description

Technical Field

[0001] The invention belongs to the technical field of sling manufacturing and application, and particularly relates to an ultra-high molecular weight polyethylene infinitely wound sling and a preparation method thereof. Background Art

[0002] The endless sling is formed by weaving the two ends of a fiber rope together.

[0003] The existing ultra-high molecular weight polyethylene fiber slings made by double-braiding ropes are smaller in size and lighter in weight than fiber slings made of general polyester industrial filaments under the same specifications. However, due to the use of double-braiding ropes, the production process is complicated. It is necessary to firstly fold the ultra-high molecular weight polyethylene raw materials into 3 coils with 40 strands, and then fold the 3 coils into one coil in the form of 3 strands under the same tension; the obtained 3 strands need to be shaped and reinforced by a solution mixed with polyurethane and water in a certain proportion and then dried.

[0004] When making the finished product, two people are required to manually wind it, and the ends must be inserted and braided together. Finally, all products need to be finalized with a tensile testing machine before sewing the protective cover. The production process is time-consuming and laborious, and because it is manually wound, the product structure and accuracy cannot be guaranteed; the structure, volume, production accuracy, and production process limitations of the double-braided rope make it more difficult to produce super-large tonnage lifting belts.

[0005] Therefore, based on the above problems, the present invention provides a synchronous belt brake tension device based on a sling threading machine. Summary of the invention

[0006] Purpose of the invention: The purpose of the present invention is to provide an ultra-high molecular weight polyethylene infinite winding lifting belt and a preparation method thereof, so as to solve the problem of complicated production process of the existing traditional double-braided rope, thereby optimizing the product structure and improving product production efficiency.

[0007] Technical solution: The first aspect of the present invention provides an ultra-high molecular weight polyethylene infinitely wrapped lifting belt, including an inner core material and a protective cover; the inner core material is arranged in a triangle shape through n small groups of 2 below and 1 above, and combined into a whole group; the protective cover is a full-wrapped protective cover, which is wrapped around the outside of the inner core material by sewing.

[0008] In the technical solution, the internal core material is a plurality of ultra-high molecular weight polyethylene fibers, which are obtained by twisting on a plying machine; wherein the number of fibers twisted into the internal core material includes but is not limited to 40, 45, and 50.

[0009] In the technical solution, when the ultra-high molecular weight polyethylene fiber is twisted into an internal core material, a certain number of single ultra-high molecular weight polyethylene fiber yarns are first selected and placed on a twisting machine creel, and then the yarns are wound on the twisting machine disc head by spiral twisting to form single strands.

[0010] In the technical solution, the protective cover is warped by a warping machine to produce the required warp heads, which are placed on a warp head rack, and the required warp yarns, weft yarns, suture threads, and lock edges are threaded on a weaving machine according to the production process, and the protective cover is produced after debugging.

[0011] The second aspect of the present invention provides a method for preparing an ultra-high molecular weight polyethylene infinitely wound lifting belt, comprising the following steps, including the following steps: step 1, firstly calculate the total number of internal core material turns required by the product specifications, and divide the total number of turns into reasonable n groups; step 2, then make the ultra-high molecular weight polyethylene filaments after the stranding on a belt threading machine by infinitely winding, threading one group at a time, and finally threading all the required number of groups; step 3, then the core material is arranged in a triangle shape of 2 groups below and 1 group above through n groups, and combined into a whole group to obtain the required complete set of internal core materials; step 4, finally sew the protective cover on the outside of the internal core material.

[0012] In the technical solution, when the yarns are combined into a whole group in step 3, a plurality of ultra-high molecular weight polyethylene fibers are wound on the disk head by spiral twisting, so as to increase the contact area and friction between the yarns and achieve the purpose of preventing slippage.

[0013] Compared with the prior art, the ultra-high molecular weight polyethylene infinite winding lifting belt and the preparation method thereof of the present invention have the following beneficial effects: 1. The structural composition is reasonable, which optimizes the product structure on the one hand and the production process on the other hand; 2. When producing ultra-large tonnage lifting belts, the production process is simpler, more precise, more efficient, and easier to operate, reducing the error of manual winding and eliminating the shaping link. It is directly made by infinite winding, and the core material is arranged in a triangle shape through n groups of 2 below and 1 above, and finally combined into a whole group, and the structure is also more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 This is a schematic diagram of the main structure of an ultra-high molecular weight polyethylene infinitely wound lifting belt of the present invention;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of an ultra-high molecular weight polyethylene infinitely wound lifting belt of the present invention;

[0017] Among them, the serial numbers in the figure are as follows: 1-protective cover, 2-internal core material. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top end", "bottom end", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] like Figure 1 and Figure 2 The ultra-high molecular weight polyethylene infinitely wound lifting belt shown comprises an inner core material 1 and a protective cover 2;

[0021] The inner core material 1 is arranged in a triangle shape through n small groups 2 below and 1 above, and is combined into a whole group; the protective cover 2 is a full-wrapped protective cover, which is wrapped around the outer part of the inner core material 1 by sewing.

[0022] In addition, the inner core material 1 is preferably a plurality of ultra-high molecular weight polyethylene fibers, which are obtained by twisting with a plying machine.

[0023] In addition, when the ultra-high molecular weight polyethylene fiber is preferably twisted into the internal core material 1, a certain number of single ultra-high molecular weight polyethylene fiber yarns are first selected and placed on the yarn frame of the twisting machine, and then the yarn is wound on the twisting machine disk head by spiral twisting to form a single rope strand.

[0024] In addition, preferably, the protective cover 2 is warped by a warping machine to produce the required warp head, which is placed on a warp head rack, and the required warp yarns, weft yarns, sutures, and hems are threaded on a weaving machine according to the production process, and the protective cover 2 is produced after debugging.

[0025] In addition, the number of the internal core materials 1 that are stranded together includes but is not limited to 40, 45, and 50.

[0026] The method for preparing an ultra-high molecular weight polyethylene infinitely wound lifting belt of the present invention comprises the following steps:

[0027] Step 1: First, calculate the total number of internal core material 1 turns required by product specifications, and divide the total number of turns into reasonable n groups;

[0028] Step 2, the combined ultra-high molecular weight polyethylene filament is produced on a tape threading machine by infinite winding, threading one group at a time, and finally threading all the required groups;

[0029] Step 3, the core material is then arranged in a triangle shape through n small groups of 2 below and 1 above, and combined into a whole group to obtain a complete set of internal core materials 1 required;

[0030] Step 4: Finally, sew the protective cover 2 onto the outside of the inner core material 1.

[0031] In addition, preferably, when the fibers are combined into a whole group in step 3, a plurality of ultra-high molecular weight polyethylene fibers are wound on the disk head by spiral twisting, so as to increase the contact area and friction between the yarns and prevent slippage.

[0032] Example

[0033] Taking the 1100T (6 times safety factor) ultra-high molecular weight polyethylene fiber sling produced this time as an example, this is the threading method of super-large tonnage lifting belts. The threading method of all lifting belts of 20T and above is the same; the threading method of lifting belts below 20T is simpler. Measure the required length on the threading machine, clamp the protective cover 2 that meets the product specifications on the threading machine through a vise, and then pass the internal core material 1 through the protective cover 2, wrap it around, wrap the joint with tape, and then start the threading machine to start threading. Lifting belts of different tonnages require different numbers of core materials for threading. After reaching the required number of circles, the threading machine automatically pauses, cuts off the excess core material, wraps the joint with tape, and finally closes the protective cover 2 to complete the threading of a lifting belt.

[0034] The inner core material 1 is threaded by an automatic threading machine, and the protective cover 2 is woven by a CKM weaving machine of Jakob Mueller Machinery Manufacturing Co., Ltd. For example, for a 30CM side cloth, the total number of head grains required for the protective cover is first calculated, and the total number of head grains is evenly distributed on several heads. The required heads are woven by a warping machine, and the heads are placed on the head frame. The required warp yarns, weft yarns, sutures, and lock edges are threaded on the weaving machine according to the production process, and the protective cover 2 is produced after debugging.

[0035] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0036] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An ultra-high molecular weight polyethylene infinitely wound lifting belt, characterized in that: It comprises an inner core material (1) and a protective cover (2); The inner core material (1) is arranged in a triangular shape by n small groups of 2 below and 1 above, and combined into a whole group; the protective cover (2) is a full-wrapped protective cover, which is wrapped around the outside of the inner core material (1) by sewing.

2. The ultra-high molecular weight polyethylene infinitely wound lifting belt according to claim 1, characterized in that: The inner core material (1) is a plurality of ultra-high molecular weight polyethylene fibers, which are obtained by twisting with a plying machine; The number of strands of the inner core material (1) includes but is not limited to 40, 45, and 50 strands.

3. The ultra-high molecular weight polyethylene infinitely wound lifting belt according to claim 2, characterized in that: When the ultra-high molecular weight polyethylene fiber is twisted into the inner core material (1), a certain number of single ultra-high molecular weight polyethylene fiber yarns are first selected and placed on a twisting machine creel, and then the yarns are wound on the twisting machine disc head by spiral twisting to form single strands.

4. The ultra-high molecular weight polyethylene infinitely wound lifting belt according to claim 1, characterized in that: The protective cover (2) is warped into the required warp head by a warping machine, and the warp head is placed on a warp head rack. The required warp yarns, weft yarns, suture threads, and sewing edges are threaded on a weaving machine according to the production process, and the protective cover (2) is produced after debugging.

5. The method for preparing an ultra-high molecular weight polyethylene infinitely wound lifting belt according to any one of claims 1 to 4, characterized in that: The following steps are included: Step 1: First, calculate the total number of turns of the required internal core material (1) according to the product specifications, and divide the total number of turns into n reasonable groups; Step 2, the combined ultra-high molecular weight polyethylene filament is produced on a tape threading machine by infinite winding, threading one group at a time, and finally threading all the required groups; Step 3, the core materials are then arranged in a triangle shape through n groups of 2 down and 1 up, and combined into a whole group to obtain a complete set of internal core materials (1); Step 4: Finally, sew the protective cover (2) onto the outside of the inner core material (1).

6. The method for preparing an ultra-high molecular weight polyethylene infinitely wound lifting belt according to claim 5, characterized in that: When the fibers are combined into a whole group in step 3, a plurality of ultra-high molecular weight polyethylene fibers are wound on the disk head by spiral twisting, thereby increasing the contact area and friction between the yarns and preventing slippage.

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