Danh mục sản phẩm
MỘT dây đai vải is a flat band woven from high-strength synthetic fibre, with an eye or a loop formed at each end, used in place of a wire rope wherever the load must not be marked. The band is wide and flat, so the same load is carried over a large area instead of on a point: that is the whole reason this article exists, and it is why it is the first choice on machined faces, tác phẩm sơn, coated tube, polished sheet and anything already finished before it is lifted.
Handling it is part of the argument too. It weighs a fraction of a wire rope of the same figure, it does not kink or develop meat hooks, and it cannot cut a hand. Hãy cho chúng tôi biết những gì đang được dỡ bỏ, the figure you need and how it will be hitched — vertical, basket or choked — and we will confirm the width, chiều dài, the end configuration and the marking before the band is woven.
What it replaced, and why it won on finished work
A wire rope sling is stronger per millimetre of its own thickness and it survives abuse that would end a webbing sling’s life. So the swap is not a question of strength; it is a question of contact and handling. A steel rope presents a hard, narrow surface to the load and a fringe of broken wires to the hands that rig it, and on a finished article it does the damage before the lift begins. MỘT dây đai vải presents a wide soft face to the load and a smooth one to the rigger, so it is chosen where the surface is worth more than the extra care a rope would need, and where the load is not so abrasive or so hot that the fibre is out of its depth.
Three things the name has to carry: chiều rộng, figure and ends
- Chiều rộng — sets the pressure on the load. A narrow band concentrates the load and is the right answer on a light, stiff article; a wide band spreads it and is the right answer on anything soft, coated or finished. It also sets what the band can be folded into.
- Nhân vật, per mode — a webbing sling does not have one capacity. It has a capacity in vertical, a different one in basket and a lower one choked, and the label states each of them. Purchasing on “trọng tải” alone is the single most common error in this category.
- Kết thúc — flat loop, folded eye or reinforced eye; they decide how the band sits on a hook, whether it can be used in a choker, and how the last of the fibres at the end are protected. The end is where a band wears out first, so it is worth specifying deliberately rather than accepting by default.
One band, several figures: the arrangement decides the rating
Các số liệu bên dưới là hệ số chế độ tiêu chuẩn được sử dụng trên thị trường cho dây đai vải phẳng: mỗi cái được nhân với giới hạn tải trọng làm việc được đánh dấu riêng của dây đeo để cung cấp công suất trong cách sắp xếp đó. Góc là góc của chân so với phương thẳng đứng, và nhãn trên bài viết luôn ghi đè lên bảng.
| Sắp xếp | Yếu tố chế độ | Ý nghĩa của nó trên sàn nhà |
|---|---|---|
| Thẳng đứng | 1.0 | Một chân, thẳng lên. Ban nhạc treo cổ và mang theo. |
| Nghẹt thở | 0.8 | The band goes round the load and back through its own eye. The wrap grips the load, and the band is loaded against itself. |
| Rổ, 0–45° | 2.0 | Băng dưới tải, cả hai đầu trên móc, chân gần thẳng đứng. |
| Rổ, 45–60° | 1.4 | Giỏ có chân dang rộng; khả năng chi phí chênh lệch. |
| Hai chân, 0–45° | 1.4 | Hai dải thành một móc, chân gần thẳng đứng, tải chia sẻ. |
| Hai chân, 45–60° | 1.0 | The same pair with the legs spread — the same loss of capacity. |
| Ba và bốn chân, 0–45° | 2.1 | Ba hoặc bốn chân; note it is not three or four times the figure, because the load rarely shares evenly. |
| Ba và bốn chân, 45–60° | 1.5 | The same arrangement spread. Re-check rather than assume. |
Two consequences worth stating plainly. A choked webbing sling is weaker than the same sling used vertically, vì vậy một tải cần phải bị nghẹt cần một dải lớn hơn thay vì một dải dài hơn. Và khi đôi chân dang rộng sức chứa rơi xuống, which is a geometric fact rather than a material one — it is answered by a wider angle-free arrangement, by a spreader, or by a bigger sling, và không có gì khác.
Colour on the band is identification, not certification
Flat webbing slings are colour-coded by working load limit under the convention most of the market uses — 1 t tím, 2 màu xanh lá cây, 3 màu vàng, 4 t màu xám, 5 màu đỏ, 6 t nâu, 8 t màu xanh, 10 màu cam. It is genuinely useful on a site: a rigger can spot a two-tonne band in a pile from across the yard. What the colour cannot do is replace the label, because the figure that applies is the one printed and affixed to that individual sling, and above the top of the coded range there is no colour to read at all. Treat the colour as the fast check and the label as the answer.
Replacing a wire rope: where the swap works and where it does not
| The condition | Dây đai vải | Dây buộc dây |
|---|---|---|
| Finished or painted surface | The reason to choose it: wide soft contact, no marking. | Marks and scuffs the surface; needs padding to compete. |
| Weight to be handled | A fraction of a rope of the same figure. | Nặng, stiff, and awkward above a certain size. |
| Sharp edges and burrs | Requires an edge protector or a sleeve, without exception. | Copes with much more, which is why it still owns the fabrication yard. |
| Hot surfaces and hot work | These fibres have a working limit around 100 °C and fail by melting, not by deforming politely. | Far more tolerant, though not unlimited. |
| mài mòn, sạn, dragging over concrete | Wears quickly; the cover can be added but the band’s life is measured in shifts. | The better answer where the environment itself is the attack. |
| Chemical contact | Depends on the fibre; acids, caustics and some solvents are hostile to most of them. | Steel is indifferent to most of what destroys a band. |
The practical rule is that a webbing sling is chosen for the sake of the load, not for the sake of the sling, and the environment the band works in is the price of that choice. Where both a finished surface and an abrasive environment are present, the answer is normally a covered or sleeved band rather than a return to wire rope — but that is a decision to take with the supplier on the specific job, not a default.
Nâng, lashing and towing are three different duties
The same article is often bought for all three and should not be. They load the band differently and are rated differently, and the confusion is the reason this section exists.
| Nhiệm vụ | How the band is loaded | Nó phải được đánh giá để làm gì | What must never happen |
|---|---|---|---|
| Nâng | Tóm tắt, rõ ràng, with a person watching and a standing load. | A lifting rating, stated per hitch and per angle, with the marking that goes with it. | A band bought for restraint used to lift. |
| Lashing / kiềm chế | liên tục, căng thẳng, đang quá cảnh, không được giám sát, with fatigue and vibration. | A restraint rating — a lashing capacity, tensioned by a ratchet or a buckle, not a lifting rating. | A lifting sling used as a lashing, or a lashing used as a sling. The duties do not transfer. |
| Towing and recovery | In snatch loads: repeated shock, far above the steady figure, plus elastic recoil if anything parts. | A purpose-made tow or recovery strap, built for shock loading, with its own rating and its own safe practice. | A lifting sling, or even a plain lashing, used as a tow rope. This is a fatal-practice, not a marginal one. |
Where a load has to be both lifted and held in transit, the correct answer is two articles rather than one used twice: a sling that lifts, và một ratchet cargo lashing belt hoặc ratchet tie down strap that restrains. It costs less than the incident.
Các cạnh, sleeves and the protection that is part of the specification
Một dải bị cắt bởi một cạnh bắt đầu như một vết khía nhỏ và kết thúc như một vết hỏng, so edge protection is a specification line rather than an accessory decision. Trường hợp tải có góc nhọn, một môi gia công, một cái gờ, vết hàn hoặc lớp da đúc thô ráp, hoặc dây đeo có tay áo và tay áo là một phần của sản phẩm, or the corner is protected with a pad or a corner piece that travels with the band. Yêu cầu nó ở giai đoạn tìm hiểu: a sleeve added later cannot be retro-fitted to a band already woven, and a band ordered without one is a band that will be used without one.
Điều tra, and the conditions that end a band’s life
Kiểm tra trước mỗi lần sử dụng, và chính thức vào khoảng thời gian các quy tắc trang web được đặt. The conditions that remove a webbing sling from service are specific rather than a matter of judgement: acid or caustic burns, melting or charring, trở ngại, vết thủng, tears or cuts, broken or worn stitching, distortion of the fittings or the eyes, and a label that can no longer be read. Một ban nhạc có bất kỳ ban nhạc nào trong số đó đã ngừng hoạt động, and it is out of service because the damage is in the load path, not because it looks untidy. Bảo quản sạch sẽ và khô ráo, ngoài ánh sáng mặt trời, and keep the record with the article.
Thường xuyên hỏi
Can a webbing sling really replace a wire rope of the same capacity? For the lift itself, Đúng, provided the figure is taken per hitch and the edges and the temperature are within the band’s limits. The two are not interchangeable in the environment, which is a different question from the load.
What width should I order? The narrowest width that will carry the figure without crushing the load, or the widest the load’s geometry will accept. Send the load and the figure, and the width follows.
Why is the choked figure lower? Bởi vì dây đeo được tự chịu tải và phần kẹp quấn, so the fibres are working in a way the vertical figure does not describe. Nó là bình thường, nó ở trên nhãn, and it is the reason a choke sometimes needs the next size up.
Can I use one sling as a lashing as well? Not as the same article. Restraint is rated for continuous tension, không phải để đi thang máy, and the two duties are marked differently. Buy the lashing as a lashing.
How long will a band last? Môi trường quyết định, không phải lịch: a band on painted steel in a workshop gives years, the same band dragged over concrete and grit gives shifts. Kiểm tra tình trạng hơn là tuổi tác, and never against a fixed service life.
Does the colour tell me the capacity? It identifies the working load limit by convention, and it is not a substitute for the label. Where the colour and the label disagree, or the label is unreadable, ban nhạc đã ngừng hoạt động.
Đi đâu tiếp theo
Related categories and products: nâng sling, dây thừng treo, chùm nâng, móc nâng, xích nâng. For the neighbouring articles see nylon woven flat sling, polypropylene flat sling, heavy duty lifting sling, dây đai vô tận, eye and eye type webbing sling, alkali resistant sling, lightweight UHMWPE endless loop flat webbing sling, flame resistant aramid webbing sling belt Và dây đai dùng một lần vô tận.
Liên hệ
Công ty TNHH giàn nâng thang máy, Ltd — điện thoại và WeChat 18066002268, e-mail 702461526@qq.com, Khu công nghiệp Lifute, Thành phố Thái Châu, Tỉnh Giang Tô, Trung Quốc. mã HS 630790. Gửi tải, con số mỗi lần, the arrangement and the working environment, và chúng tôi sẽ xác nhận chiều rộng, chiều dài, the protection and the marking before the band is woven.
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