A high temperature and high pressure resistant high energy absorption buffer and a manufacturing method thereof

Abstract

The present invention proposes a high-temperature, high-pressure and high-energy-absorbing buffer, comprising a tear tape, wherein the tear tape is formed into several layers after being folded multiple times, and a plurality of first sewing sections are arranged between each two adjacent layers, and the first sewing sections are arranged in an alternating manner, and a plurality of second sewing sections are arranged between every three layers of the tear tape, and the first sewing sections and the second sewing sections are both formed by sewing thread; the two ends of the tear tape are respectively connected to a connecting tape, and the connecting tape is connected to a load-bearing tape; the tear tape is woven from a plurality of warp yarn strands and weft yarn strands, and the warp yarn strands and the weft yarn strands are respectively formed by primary twisting and secondary twisting of warp yarn filaments and weft yarn filaments, the number of warp yarn filaments and weft yarn filaments is 2-8, the specification range is 210-1260D, the primary twist is set to 100-200 twists / m, the number of secondary twist strands is 3-8, and the secondary twist is set to 60-160 twists / m; the load-bearing tape and the connecting tape are both woven from warp yarn filaments and weft yarn filaments.

Description

Technical Field

[0001] The invention relates to a high-temperature, high-pressure and high-energy-absorbing buffer and a manufacturing method thereof, belonging to the technical field of ropes. Background Art

[0002] Buffering technology and equipment originated in Europe. Both Europe and the United States have conducted systematic research on fall safety protection. Their safety protection technology and materials are leading the world, and the relevant standards are relatively complete. With the rapid development of industries such as electricity and construction, many high-altitude workers have emerged. It is very necessary to provide fall protection for high-altitude workers so that they can effectively avoid the huge harm caused by falling from a height when they accidentally fall from a height.

[0003] The current international standard requires that the impact force on the human body under the action of the buffer is less than 6KN. Although reaching 6KN is not enough to be fatal, the comfort of the person who falls and impacts is very poor. At the same time, in the field of fire rescue and power operations, there is a risk of working in a high temperature and high pressure environment. The existing buffers are made of polyester or polypropylene, with poor buffering performance, and the performance drops sharply at 200℃. The high-voltage impact resistance is less than 100KV, and the safety is poor.

[0004] Therefore, it is necessary to provide a buffer that can be used under 200°C environmental conditions, can withstand high-voltage shocks of up to 220KV, can be widely used in fire rescue, power operations and other fields, and can absorb more energy generated by the falling process when the human body is subjected to the impact of falling, and play the effect of reducing the impact force on the human body. Summary of the invention

[0005] In order to solve the above-mentioned technical problems, the present invention provides a high-temperature, high-pressure, high-energy-absorbing buffer and a method for making the same, which can absorb more energy generated during the falling process and reduce the impact force on the human body, and is resistant to high temperature and high pressure.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A high-temperature, high-pressure and high-energy-absorbing buffer comprises a tearing tape, wherein the tearing tape is formed into several layers after being folded for many times, and a plurality of first sewing sections are arranged between each two adjacent layers, and the first sewing sections are arranged in a staggered manner, and a plurality of second sewing sections are arranged between every three layers of the tearing tape, and the first sewing sections and the second sewing sections are both formed by sewing thread; the two ends of the tearing tape are respectively connected to a connecting tape, and the connecting tape is connected to a load-bearing tape; the tearing tape is woven from a plurality of warp yarn strands and weft yarn strands, and the warp yarn strands and the weft yarn strands are respectively formed by primary twisting and secondary twisting of warp yarn filaments and weft yarn filaments, the number of warp yarn filaments and weft yarn filaments is 2-8, the specification range is 210-1260D, the primary twist is set to 100-200 twists / m, the number of secondary twist strands is 3-8 strands, and the secondary twist is set to 60-160 twists / m; the load-bearing tape and the connecting tape are both woven from warp yarn filaments and weft yarn filaments.

[0008] Preferably, the warp filaments and weft filaments of the tear tape are made of nylon fibers.

[0009] Furthermore, the warp filaments of the load-bearing belt and the connecting belt are made of mulberry silk fibers; the weft filaments of the load-bearing belt and the connecting belt are made of one or more of aramid, polyarylate, PBO or polyimide fibers.

[0010] Furthermore, the width of the load-bearing belt and the tearing belt is 10-50mm, the thickness is 2-5mm, the warp density is 18-25 strands / cm, and the weft density is 15-28 strands / cm; the width of the connecting belt is 20-50mm, the warp density is 10-28 strands / cm, the weft density is 6-20 strands / cm, and the thickness is 3-11mm.

[0011] A method for manufacturing a high-temperature, high-pressure, high-energy-absorbing buffer comprises the following steps:

[0012] a. Material selection: Select 210-1260D fiber filament material for warp filament and weft filament;

[0013] b. Primary twist: Take 2-8 single-strand fiber filaments with a specification of 210-1260D, set the primary twist to 100-200 twists / m, and complete the primary twist by twisting to form a twisted yarn;

[0014] c. Re-twisting: Take 3-8 strands of pre-twisted yarn and twist them in the opposite direction. The re-twisting twist is set to 60-160 twists / m. Re-twisting is completed by twisting to form warp yarn strands and weft yarn strands respectively.

[0015] d. Warping: The warp yarn strands are passed through the warping machine to form a warp yarn head of a certain length for standby use;

[0016] e. Yarn threading: Take a certain amount of warp filaments and weft filaments, pass them through the creel, and then pass through the reed, dropper, heald and dropper, and heald eye to complete the yarn threading process;

[0017] f. Weaving: Start the buffer weaving machine, thread the yarn and lock the edges according to the size of the tear tape, adjust the positions of the weaving machine hook needle, weft needle and lock edge needle, and introduce the weft yarn strands to produce the tear tape in an interlaced manner;

[0018] g. Produce the load-bearing belt and the connecting belt according to the above steps of producing the tearing belt, wherein the warp filaments and the weft filaments of the load-bearing belt and the connecting belt do not include the primary twisting and secondary twisting treatments;

[0019] h. Cutting the tape: Cut the tear tape, load-bearing tape and connecting tape into the specified size by a cutting machine. The load-bearing tape and tear tape have a width of 10-50mm, a thickness of 2-5mm, a warp density of 18-25 strands / cm, and a weft density of 15-28 strands / cm; the connecting tape has a width of 20-50mm, a warp density of 10-28 strands / cm, a weft density of 6-20 strands / cm, and a thickness of 3-11mm;

[0020] i. Shaping: Put the cut tear tape into the shaping machine for relaxation and shaping. The treatment conditions are: temperature 80-180℃, time 10-100min;

[0021] j. Sewing: The cut and shaped tear tape is folded several times according to the corresponding length and placed on a semi-automatic pattern sewing machine for sewing. Several staggered first sewing sections are sewn between every two adjacent layers, and several second sewing sections are sewn between every three layers. The tear tape and the connecting tape, and the connecting tape and the load-bearing tape are sewn and fixed in sequence to obtain a high-temperature, high-pressure, and high-energy-absorbing buffer.

[0022] The present invention can absorb more energy generated by the falling process when the human body is subjected to the impact of falling, and play the effect of reducing the impact force on the human body. The minimum impact force is ≤4.5KN, which is much lower than the 6KN required by the standard, so it can better ensure the personal safety and comfort of the user. At the same time, the present invention can be used under 200℃ environmental conditions, and can withstand high-voltage impact of up to 220KV, and can be widely used in fire rescue, power operation and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a high-temperature, high-pressure, and high-energy-absorbing buffer of the present invention.

[0024] In the figure: 1, tearing tape; 2, connecting tape; 3, load-bearing tape; 4, first sewing section; 5, second sewing section. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1 As shown, a high-temperature, high-pressure and high-energy-absorbing buffer comprises a tearing tape 1, wherein the tearing tape 1 is formed into a plurality of layers after being folded for many times, and a plurality of first sewing sections 4 are arranged between each two adjacent layers, and the first sewing sections 4 are arranged in a staggered manner, and a plurality of second sewing sections 5 are arranged between each three layers of the tearing tape 1, and the first sewing sections 4 and the second sewing sections 5 are formed by sewing threads; the two ends of the tearing tape 1 are respectively connected to the connecting tape 2, and the connecting tape 2 is connected to the load-bearing tape 3; the tearing tape 1 is used in the buffer It plays an energy-absorbing and protective role in the process. It is woven from multiple warp yarns and weft yarns. The warp yarns and weft yarns are respectively made of warp filaments and weft filaments through primary twisting and secondary twisting. The number of warp filaments and weft filaments is 2-8, the specification range is 210-1260D, the primary twist is set to 100-200 twists / m, the number of secondary twists is 3-8, and the secondary twist is set to 60-160 twists / m; the load-bearing belt 3 and the connecting belt 2 are both woven from warp filaments and weft filaments.

[0027] The warp filaments and weft filaments of the tearing belt 1 are made of nylon fibers and are heat-set at the same time to improve the buffering and energy absorption effect of the buffer. The warp filaments of the load-bearing belt 3 and the connecting belt 2 are made of mulberry silk fibers; the weft filaments of the load-bearing belt 3 and the connecting belt 2 are made of one or more of aramid, polyarylate, PBO or polyimide fibers.

[0028] The load-bearing belt 3 and the tearing belt 1 have a width of 10-50 mm, a thickness of 2-5 mm, a warp density of 18-25 strands / cm, and a weft density of 15-28 strands / cm; the connecting belt 2 has a width of 20-50 mm, a warp density of 10-28 strands / cm, a weft density of 6-20 strands / cm, and a thickness of 3-11 mm.

[0029] A method for manufacturing a high-temperature, high-pressure, high-energy-absorbing buffer comprises the following steps:

[0030] a. Material selection: Select 210-1260D fiber filament material for warp filament and weft filament;

[0031] b. Primary twist: Take 2-8 single-strand fiber filaments with a specification of 210-1260D, set the primary twist to 100-200 twists / m, and complete the primary twist by twisting to form a twisted yarn;

[0032] c. Re-twisting: Take 3-8 strands of pre-twisted yarn and twist them in the opposite direction. The re-twisting twist is set to 60-160 twists / m. Re-twisting is completed by twisting to form warp yarn strands and weft yarn strands respectively.

[0033] d. Warping: The warp yarn strands are passed through the warping machine to form a warp yarn head of a certain length for standby use;

[0034] e. Yarn threading: Take a certain amount of warp filaments and weft filaments, pass them through the creel, and then pass through the reed, dropper, heald and dropper, and heald eye to complete the yarn threading process;

[0035] f. Weaving: Start the buffer weaving machine, thread the yarn and lock the edges according to the size of the tear tape 1, adjust the positions of the weaving machine hook needle, weft needle and lock edge needle, and introduce the weft yarn strands to produce the tear tape 1 in an interlaced manner;

[0036] g. Produce the load-bearing belt 3 and the connecting belt 2 according to the above steps of producing the tearing belt 1, wherein the warp filaments and weft filaments of the load-bearing belt 3 and the connecting belt 2 do not include primary twisting and secondary twisting treatment;

[0037] h. Cutting the tape: Cut the tear tape 1, the load-bearing tape 3 and the connecting tape 2 according to the specified size through a cutting machine, wherein the load-bearing tape 3 and the tear tape 1 have a width of 10-50 mm, a thickness of 2-5 mm, a warp density of 18-25 strands / cm, and a weft density of 15-28 strands / cm; the connecting tape 2 has a width of 20-50 mm, a warp density of 10-28 strands / cm, a weft density of 6-20 strands / cm, and a thickness of 3-11 mm;

[0038] i. Shaping: Put the cut tear tape 1 into a shaping machine for relaxation and shaping. The treatment conditions are: temperature 80-180°C, time 10-100min;

[0039] j. Sewing: the cut and shaped tear tape 1 is placed on a semi-automatic pattern sewing machine for sewing after being folded several times according to the corresponding length, and a number of staggered first sewing sections 4 are sewn between every two adjacent layers, and a number of second sewing sections 5 are sewn between every three layers; the tear tape 1 and the connecting tape 2, and the connecting tape 2 and the load-bearing tape 3 are sewn and fixed in sequence to obtain a high-temperature, high-pressure, and high-energy-absorbing buffer.

[0040] Embodiment 1:

[0041] The production of a buffer with an impact force of 4.2KN and a static tension of 18KN includes the following steps:

[0042] a. Material selection: Select: 1260D fiber filament material, prepare warp filament and weft filament for use;

[0043] b. Initial twist: Take 2 single-strand fiber filaments with a specification of 1260D, set the initial twist to 100 twists / m, and complete the initial twist by twisting to form a twisted yarn;

[0044] c. Re-twisting: Take 3 strands of pre-twisted yarn and twist them in the opposite direction. The re-twisting twist is set to 60 twists / m. The re-twisting is completed by twisting to form warp yarn strands and weft yarn strands respectively.

[0045] d. Warping: The warp yarn strands are passed through the warping machine to form a warp yarn head of a certain length for standby use;

[0046] e. Yarn threading: Take a certain amount of warp filaments and weft filaments, pass them through the creel, and then pass through the reed, dropper, heald and dropper, and heald eye to complete the yarn threading process;

[0047] f. Weaving: Start the buffer weaving machine, thread the yarn and lock the edges according to the size of the tear tape 1, adjust the positions of the weaving machine hook needle, weft needle and lock edge needle, and introduce the weft yarn strands to produce the tear tape in an interlaced manner;

[0048] g. Produce the load-bearing belt and the connecting belt according to the above steps of producing the tearing belt 1, wherein the warp filaments and weft filaments of the load-bearing belt 3 and the connecting belt 2 do not include primary twisting and secondary twisting treatment;

[0049] h. Cutting the tape: Cut the tear tape 1, the load-bearing tape 3 and the connecting tape 2 according to the specified size through a cutting machine. The load-bearing tape 3 and the tear tape 1 are 10 mm wide, 2 mm thick, 18 strands / cm in the warp direction, and 15 strands / cm in the weft direction; the connecting tape 2 is 20 mm wide, 10 strands / cm in the warp direction, 6 strands / cm in the weft direction, and 3 mm thick;

[0050] i. Shaping: Put the cut tear tape 1 into a shaping machine for relaxation and shaping. The treatment conditions are: temperature 80°C, time 100 minutes;

[0051] j. Sewing: the cut and shaped tear tape 1 is placed on a semi-automatic pattern sewing machine for sewing after being folded several times according to the corresponding length, and a number of staggered first sewing sections 4 are sewn between every two adjacent layers, and a number of second sewing sections 5 are sewn between every three layers; the tear tape 1 and the connecting tape 2, and the connecting tape 2 and the load-bearing tape 3 are sewn and fixed in sequence to obtain a high-temperature, high-pressure, and high-energy-absorbing buffer.

[0052] Embodiment 2:

[0053] The production of a buffer with an impact force of 4.5KN and a static tension of 25KN includes the following steps:

[0054] a. Material selection: Select 210D fiber filament material for warp filament and weft filament;

[0055] b. Initial twist: Take 8 single-strand fiber filaments with a specification of 210D, set the initial twist to 200 twists / m, and complete the initial twist by twisting to form a twisted yarn;

[0056] c. Re-twisting: Take 8 strands of pre-twisted yarn and twist them in the opposite direction. The re-twisting twist is set to 160 twists / m. The re-twisting is completed by twisting to form warp strands and weft strands respectively.

[0057] d. Warping: The warp yarn strands are passed through the warping machine to form a warp yarn head of a certain length for standby use;

[0058] e. Yarn threading: Take a certain amount of warp filaments and weft filaments, pass them through the creel, and then pass through the reed, dropper, heald and dropper, and heald eye to complete the yarn threading process;

[0059] f. Weaving: Start the buffer weaving machine, thread the yarn and lock the edges according to the size of the tear tape 1, adjust the positions of the weaving machine hook needle, weft needle and lock edge needle, and introduce the weft yarn strands to produce the tear tape 1 in an interlaced manner;

[0060] g. Produce the load-bearing belt 3 and the connecting belt 2 according to the above steps for producing the tearing belt, wherein the warp filaments and weft filaments of the load-bearing belt 3 and the connecting belt 2 do not include primary twisting and secondary twisting treatments;

[0061] h. Cutting the tape: Cut the tear tape 1, the load-bearing tape 3 and the connecting tape 2 according to the specified size through a cutting machine. The load-bearing tape 3 and the tear tape 2 are 50 mm wide, 5 mm thick, 25 strands / cm in the warp direction, and 28 strands / cm in the weft direction; the connecting tape 2 is 50 mm wide, 28 strands / cm in the warp direction, 20 strands / cm in the weft direction, and 11 mm thick;

[0062] i. Shaping: Put the cut tear tape 1 into a shaping machine for relaxation and shaping. The treatment conditions are: temperature 180°C, time 10 minutes;

[0063] j. Sewing: the cut and shaped tear tape 1 is placed on a semi-automatic pattern sewing machine for sewing after being folded several times according to the corresponding length, and a number of staggered first sewing sections 4 are sewn between every two adjacent layers, and a number of second sewing sections 5 are sewn between every three layers; the tear tape 1 and the connecting tape 2, and the connecting tape 2 and the load-bearing tape 3 are sewn and fixed in sequence to obtain a high-temperature, high-pressure, and high-energy-absorbing buffer.

[0064] Since the tearing belt 1 is designed with twisted nylon fiber warp filaments and weft filaments, and is heat-set, when the buffer is subjected to a fall impact, the friction coefficient of the contact surface increases, the wear resistance is enhanced, and the elongation increases, so the impact force is reduced and the buffering performance is improved. Since the load-bearing belt 3 and the connecting belt 2 are designed with high-temperature resistant weft filaments and high-pressure impact resistant warp filaments, they have both high-temperature resistance and high-pressure impact resistance while meeting high buffering performance.

[0065] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a high temperature, high pressure and high energy absorption buffer, characterized in that: The steps include: a. Material selection: Select 210-1260D fiber filament material for warp filament and weft filament; b. Primary twist: Take 2-8 single-strand fiber filaments with a specification of 210-1260D, set the primary twist to 100-200 twists / m, and complete the primary twist by twisting to form a twisted yarn; c. Re-twisting: Take 3-8 strands of pre-twisted yarn and twist them in the opposite direction. The re-twisting twist is set to 60-160 twists / m. Re-twisting is completed by twisting to form warp yarn strands and weft yarn strands respectively. d. Warping: The warp yarn strands are passed through the warping machine to form a warp yarn head of a certain length for standby use; e. Yarn threading: Take a certain amount of warp filaments and weft filaments, pass them through the creel, and then pass through the reed, dropper, heald and dropper, and heald eye to complete the yarn threading process; f. Weaving: Start the buffer weaving machine, thread the yarn and lock the edges according to the size of the tear tape, adjust the positions of the weaving machine hook needle, weft needle and lock edge needle, and introduce the weft yarn strands to produce the tear tape in an interlaced manner; g. Produce the load-bearing belt and the connecting belt according to the above steps of producing the tearing belt, wherein the warp filaments and the weft filaments of the load-bearing belt and the connecting belt do not include the primary twisting and secondary twisting treatments; h. Cutting the tape: Cut the tear tape, load-bearing tape and connecting tape into the specified size by a cutting machine. The load-bearing tape and tear tape have a width of 10-50mm, a thickness of 2-5mm, a warp density of 18-25 strands / cm, and a weft density of 15-28 strands / cm; the connecting tape has a width of 20-50mm, a warp density of 10-28 strands / cm, a weft density of 6-20 strands / cm, and a thickness of 3-11mm; i. Shaping: Put the cut tear tape into the shaping machine for relaxation and shaping. The treatment conditions are: temperature 80-180℃, time 10-100min; j. Sewing: The cut and shaped tear tape is placed on a semi-automatic pattern sewing machine for sewing after being folded several times according to the corresponding length, and a number of staggered first sewing sections are sewn between every two adjacent layers, and a number of second sewing sections are sewn between every three layers; the tear tape is sewn and fixedly connected with the connecting tape, and the connecting tape is sewn and fixedly connected with the load-bearing tape in sequence to obtain a high-temperature, high-pressure, and high-energy-absorbing buffer; The buffer manufactured by the above method includes a tearing belt, which is formed into several layers after being folded for many times, and a plurality of first sewing sections are arranged between every two adjacent layers, and the first sewing sections are arranged in a staggered manner; a plurality of second sewing sections are arranged between every three layers of the tearing belt, and the first sewing sections and the second sewing sections are both formed by sewing thread; the two ends of the tearing belt are respectively connected to connecting belts, and the connecting belt is connected to the load-bearing belt; the tearing belt is woven from multiple warp yarns and weft yarns, and the warp yarns and weft yarns are respectively formed by primary twisting and secondary twisting of warp filaments and weft filaments, the number of warp filaments and weft filaments is 2-8, the specification range is 210-1260D, the primary twist is set to 100-200 twists / m, the number of secondary twists is 3-8, and the secondary twist is set to 60-160 twists / m; the load-bearing belt and the connecting belt are both woven from warp filaments and weft filaments.

2. The method for manufacturing a high temperature, high pressure and high energy absorption buffer according to claim 1, characterized in that: The warp filaments and weft filaments of the tear tape are made of nylon fibers.

3. The method for manufacturing a high temperature, high pressure and high energy absorption buffer according to claim 2, characterized in that: The warp filaments of the load-bearing belt and the connecting belt are made of mulberry silk fibers; the weft filaments of the load-bearing belt and the connecting belt are made of one or more of aramid, polyarylate, PBO or polyimide fibers.

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