A hot strip steel threading head device
By designing a multi-hole threading head device, the tension is distributed and upward tilting is prevented, thus solving the problem of difficult threading in the continuous pickling unit of cold-rolled strip and realizing an efficient and time-saving threading process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 广西钢铁集团有限公司
- Filing Date
- 2025-09-03
- Publication Date
- 2026-08-04
AI Technical Summary
In the production of cold-rolled strip continuous pickling unit, the existing strip threading method has problems such as the strip head hole being easily torn, the strip head curving upwards resulting in poor passability, and the strip head being too thick due to the threading rope knot, making it impossible to pass through the small gap of the equipment. As a result, the strip threading process is time-consuming, labor-intensive, and has a low success rate.
Design a hot-rolled strip steel threading head device, including a threading component and a connecting component. By setting multiple threading holes and the synergistic effect of the threading rope, the threading tension is distributed, the tear resistance is improved, and the upward tilting is prevented when driving the strip steel. The overall thickness is controlled at about 34mm, and a protective sleeve is used to prevent the rope segment from being cut.
It improves the passability of threading the belt head and the success rate of threading the belt on the first try, reduces the time spent on repeatedly making belt heads and disassembling and assembling equipment accessories, saves manpower and resources, increases the success rate and solves the problem that the belt head is too thick to pass through the small gaps in the equipment.
Smart Images
Figure CN224586629U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold-rolled strip production technology in the metallurgical industry, and in particular to a strip threading device for hot-rolled strip. Background Technology
[0002] During the production process of continuous pickling line for cold-rolled strip, strip breakage may occur due to weld quality defects, raw material defects, or equipment maintenance. When production is resumed, strip threading is required. Continuous pickling line is characterized by thick raw materials, long production lines, numerous rollers, and small equipment gaps. In particular, with the increasing awareness of environmental protection, more tension rollers are equipped with dust hoods, making the equipment gaps even smaller. Therefore, the strip threading operation must have the performance of high tensile strength, small strip head thickness, and good throughput. The current conventional strip threading method is to first cut the strip head into a tongue shape and then open a threading hole. The threading rope is then tied after passing around the threading hole. This method has problems such as the strip head hole being easily torn, poor throughput due to the strip head curving upwards, and the strip head thickness being too large (about 65mm) due to the threading rope knot, which cannot pass directly through the small gaps in the equipment. This results in the entire strip threading process requiring repeated strip head making and disassembly and assembly of equipment accessories, which is time-consuming, labor-intensive, and has a low success rate of threading on the first attempt.
[0003] To address the aforementioned issues, while the published invention patent "A Method for Treating the Head of Hot-Rolled Strip Before Threading" (authorization announcement number CN103464478B) can solve the problems of the strip head hole being easily torn and the poor passage due to the strip head curving upwards, the patent does not specify a method for binding the threading rope. This may still result in the strip head being too thick to pass directly through small gaps in the equipment due to the knot of the threading rope. Furthermore, the method of bending and welding after bending has drawbacks such as difficulty in bending thick plates, high risks of hot work welding, time-consuming manufacturing, and high professional threshold. Although the published utility model patent "A Threading Strip Head Structure" (authorization announcement number CN217222978U) has a simple structure and is easy to manufacture, avoiding the cumbersome processes of bending and welding the strip head, the Prussian knot of the flat threading rope is still relatively thick, and the problem of the strip head being too thick to pass directly through small gaps in the equipment due to the knot of the threading rope remains. Individual threading holes are still prone to tearing. Utility Model Content
[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.
[0005] In view of the problems existing in the above or prior art, this utility model is proposed.
[0006] Therefore, the purpose of this utility model is to provide a strip threading device for hot-rolled strip.
[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a strap-threading component, the strap-threading component including a strap-threading part and a strap-threading hole part disposed on the strap-threading part; and a connecting component, the connecting component including a strap-threading rope part disposed on the strap-threading hole part.
[0008] As a preferred embodiment of the hot-rolled strip steel threading head device of this utility model, the threading component includes a threading steel and a threading head disposed on the strip steel; wherein the threading steel and the threading head are fixedly connected.
[0009] As a preferred embodiment of the hot-rolled strip threading head device of this utility model, the threading head is provided with an A end and a B end that is shorter than the length of the A end.
[0010] In a preferred embodiment of the hot-rolled strip threading device of this utility model, the A end is the same length as the threading strip.
[0011] As a preferred embodiment of the hot-rolled strip threading head device of this utility model, the threading hole includes a first threading hole, a second threading hole, and a third threading hole on the threading head.
[0012] As a preferred embodiment of the hot-rolled strip threading head device of this utility model, the threading rope includes a first threading rope disposed on the threading hole and a second threading rope disposed on the first threading rope; wherein the first threading rope and the second threading rope are fixedly connected.
[0013] As a preferred embodiment of the hot-rolled strip threading head device of this utility model, the first threading rope includes a first section, a second section, a third section, a bent section, a fourth section, a fifth section, a sixth section, and a seventh section; wherein the first section is fixedly connected to the second threading rope.
[0014] As a preferred embodiment of the hot-rolled strip threading device of this utility model, it further includes a steel wire disposed on the second threading rope; wherein the second threading rope and the eighth segment are tied together by the steel wire.
[0015] As a preferred embodiment of the hot-rolled strip threading head device of this utility model, it further includes a protective sleeve disposed on the threading head; wherein the protective sleeve is located at the bending section.
[0016] The beneficial effects of this utility model of hot-rolled strip steel threading head device are as follows: By setting up threading components and connecting components, this utility model effectively distributes the threading tension under the synergistic effect of the first threading hole, the second threading hole, the third threading hole and the first threading rope, thereby improving tear resistance. In addition, the threading head is not easy to curl up when driving the strip steel to thread, which improves the passability of the threading head. Moreover, the overall thickness is about 34mm, eliminating the need for repeated production of strip heads and disassembly and assembly of equipment accessories, saving time and effort, and improving the success rate of threading on the first attempt. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0018] Figure 1 This is a schematic diagram of the overall device for threading hot-rolled strip.
[0019] Figure 2 This is a schematic diagram of the overall threading components of a hot-rolled strip threading device.
[0020] Figure 3 This is a schematic diagram of the overall connecting components of the hot-rolled strip threading device. Detailed Implementation
[0021] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0023] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0024] Example 1
[0025] Reference Figures 1-3This is the first embodiment of the present invention. This embodiment provides a hot-rolled strip steel threading head device, which includes a threading component 1, the threading component 1 including a threading piece 11 and a threading hole piece 12 disposed on the threading piece 11; and a connecting component 3, the connecting component 3 including a threading rope piece 21 disposed on the threading hole piece 12.
[0026] Specifically, the strapping cord 21 is fixed to the strapping cord 11 through the strapping hole 12. When the strapping cord 21 is subjected to tension, it will pull the strapping cord 11 to move, thereby achieving strapping.
[0027] Example 2
[0028] Reference Figures 1-3 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a hot-rolled strip steel threading head device, which includes a threading component 11 including a threading steel 111 and a threading head 112 disposed on the strip steel; wherein, the threading steel 111 and the threading head 112 are fixedly connected; the threading head 112 is provided with an A end 113 and a B end 114 that is shorter than the length of the A end 113, and the A end 113 is the same length as the threading steel 111.
[0029] Specifically, the threading steel 111 is fixedly connected to the threading head 112. The threading head 112 is provided with an arc a to prevent the B end 114 from tilting upwards, thereby improving the guiding and passing performance of the threading head 112. At the same time, it prevents the B end 114 of the threading head 112 from tilting upwards and causing threading jamming, thereby increasing the success rate of threading in one go and ensuring smooth passage through small gaps in the equipment.
[0030] Furthermore, the strapping hole 12 includes a first strapping hole 121 disposed on the strapping head 112, a second strapping hole 122 disposed on the strapping head 112, and a third strapping hole 123 disposed on the strapping head 112.
[0031] Specifically, the first threading hole 121, the second threading hole 122, and the third threading hole 123 are spaced equally, with a spacing of 150mm to 200mm. The first threading hole 121, the second threading hole 122, and the third threading hole 123 are all the same size, with a length of 150mm to 200mm and a width of 50mm to 70mm. The inner sidewalls of the first threading hole 121, the second threading hole 122, and the third threading hole 123 are provided with an arc surface b to reduce sharpness and prevent cutting the first threading rope 211.
[0032] Furthermore, the strapping member 21 includes a first strapping cord 211 disposed on the strapping hole and a second strapping cord 212 disposed on the first strapping cord 211; wherein the first strapping cord 211 and the second strapping cord 212 are fixedly connected; the first strapping cord 211 includes a first segment 2111, a second segment 2112, a third segment 2113, a bent segment 2114, a fourth segment 2115, a fifth segment 2116, a sixth segment 2117 and a seventh segment 2118; wherein the first segment 2111 is fixedly connected to the second strapping cord 212.
[0033] Specifically, the first threading rope 211 consists of a first segment 2111, a second segment 2112, a third segment 2113, a bent segment 2114, a fourth segment 2115, a fifth segment 2116, a sixth segment 2117, and a seventh segment 2118, as shown in the figure. The first segment 2111 is in its initial extended state and has not yet entered the threading hole 12. Immediately afterwards, the second segment 2112 enters the first threading hole 121 and then exits from the second threading hole 122. The third segment 2113 extends to the third threading hole 123 and enters it. After turning through the bent segment 2114, the fourth segment 2115 exits from the second threading hole 122. The fifth segment 2116 extends to the first threading hole 121. The sixth segment 2117 enters the first threading hole 121 and exits from end B 114. The seventh segment 2118 ends in its extended state and contacts the second threading rope 212, completing the overall threading path.
[0034] Furthermore, it also includes a steel wire 22 provided on the second threading rope 212; wherein the second threading rope 212 and the seventh segment 2118 are tied together by the steel wire 22.
[0035] Specifically, multiple steel wires 22 are provided, and the multiple steel wires 22 are distributed in a rectangular array. The second threading rope 212 and the seventh segment 2118 are firmly tied together by the multiple steel wires 22, which enhances the tightness of the connection between the two and effectively improves the tensile performance and stability of the overall connection structure. This ensures that a reliable connection can be maintained under repeated stress or tension, and that it is not easy for loosening or slippage to occur.
[0036] Furthermore, it also includes a protective sleeve 23 provided on the thread head 112; wherein the protective sleeve 23 is located at the bend section 2114.
[0037] Specifically, the protective sleeve 23 is U-shaped and can protect the bend 2114 of the first threading rope 211, effectively preventing it from being cut and improving tear resistance. The protective sleeve 23 is secured at the third threading hole 123.
[0038] In use, the first segment 2111 extends to the first threading hole 121, the second segment 2112 enters the first threading hole 121 and exits from the second threading hole 122; the third segment 2113 extends to the third threading hole 123 and enters it; after turning at the bend 2114, the fourth segment 2115 exits from the second threading hole 122, the fifth segment 2116 extends to the first threading hole 121, the sixth segment 2117 enters the first threading hole 121 and exits from end B 114, and the seventh segment 2118 ends in an extended state and contacts the second threading rope 212, completing the overall threading path. This ensures that the first threading rope 211 is wrapped around the threading head 112 through the first threading hole 121, the second threading hole 122, and the third threading hole 123, and then passes through multiple steel wires 22 to make the seventh segment 2111... 18. The second threading rope 212 is tied and fixed. When the second threading rope 212 is under tension, the first threading rope 211 will move along with the second threading rope 212, causing the threading head 112 to move, so that the threading steel 111 moves with the threading head 112, realizing the threading of the steel strip (threading head 112 and threading steel 111). By placing a protective sleeve 23 on the third threading hole 123, the bending section 2114 of the first threading rope 211 can be effectively protected to prevent it from being cut, and the tear resistance of the threading holes (first threading hole 121 / second threading hole 122 / third threading hole 123) can be improved. The threading tension can be effectively distributed through the three threading holes, further improving the tear resistance. The maximum tensile force that a single hole can withstand is 25kN, which is increased to a maximum tensile force of 38kN that a three-hole hole can withstand, an increase of 52%.
[0039] It should be noted that the overall thickness is equal to twice the thickness of the threading rope (first threading rope 211 and second threading rope 212), twice the thickness of the protective sleeve 23, and the sum of the thickness of the threading head steel plate (threading component 11). The maximum thickness is approximately 34mm. This eliminates the need for repeated threading head fabrication and disassembly / reassembly of equipment accessories, saving time and effort. It also increases the success rate of threading the belt on the first attempt. This solves the problem that the excessive thickness of the threading head (approximately 65mm) caused by the threading rope knot prevents it from passing directly through small gaps in the equipment. It can reduce the time spent on repeated threading head fabrication and disassembly / reassembly of equipment accessories by approximately 3 hours.
[0040] Example 3
[0041] This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a method for manufacturing a hot-rolled strip threading device:
[0042] Step 1: Cut the strip steel into two parts: the threading steel 111 and the "tongue"-shaped threading head 112. The threading head 112 is 800-1200mm long and the B end 114 of the threading head 112 is 300mm wide. Cut the sharp corner into a rounded transition to avoid upturning and improve the smoothness of threading.
[0043] Step 2: Cut three threading holes (first threading hole 121, second threading hole 122, and third threading hole 123) on the threading head 112, each 150mm-200mm long and 50mm-70mm wide, with a spacing of 150mm-200mm between adjacent holes; the first threading hole 121 is 100mm-150mm away from end B 114 on the threading head 112. In addition, the edges of the first threading hole 121, the second threading hole 122, and the third threading hole 123 are ground to remove burrs and rounded with small rounded corners (arc surface b) to reduce sharpness and avoid cutting the threading cord;
[0044] Step 3: Insert the first threading rope 211 through the upper surface of the first threading hole 121, then through the lower surface of the second threading hole 122, then through the upper surface of the third threading hole 123, then through the lower surface of the second threading hole 122, then through the upper surface of the first threading hole 121. Finally, overlap the seventh segment 2118 of the first threading rope 211 with the second threading rope 212 by 400-500mm. In particular, ensure that the second threading rope 212 is located on the upper surface of the threading head 112, so that the second threading rope 212 is not prone to tilting upwards when it is pulled by the tension to drive the threading head 112 and the threading steel 111, thereby improving the passability, avoiding the threading head 112 tilting upwards and causing the threading to get stuck, and also ensuring smooth passage through small gaps in the equipment.
[0045] Step 4: Place a protective sleeve 23 at the contact point between the bent section 2114 of the first threading rope 211 and the third threading hole 123. This can prevent the first threading rope 211 from being cut and also improve the tear resistance of the third threading hole 123.
[0046] Step 5: Use a hole-expanding steel awl to pre-puncture small holes at the overlapping position of the seventh segment 2118 of the first threading rope 211 and the second threading rope 212. The purpose is to facilitate the threading of the wire. Set four holes in a row parallel to the width direction of the second threading rope 212, with a hole spacing of 20mm to 30mm and a row spacing of 40 to 50mm. The first row of holes should be as close as possible to the B end 114 of the threading head 112. The purpose is to ensure that the threading head 112 and the threading steel 111 do not tilt upwards when the threading rope 21 is under tension.
[0047] Step 6: Finally, after threading the wire through two adjacent holes, tie them together. Do not repeat the process of threading the wire through holes that have already been threaded.
[0048] In summary, assembly can be completed simply by opening three threading holes (first threading hole 121, second threading hole 122, and third threading hole 123) at the threading head 112, and having the first threading rope 211 pass through the three threading holes and overlap with the second threading rope 212. The first threading rope 211 and the second threading rope 212 are then fixed by the steel wire 22. The structure is simple, easy to manufacture and process, the threading part 11 is not easy to curl up, the passability is improved, and it can directly pass through small gaps in the equipment, thus improving the success rate of threading the belt in one go.
[0049] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0050] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0051] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0052] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A strip threading device for hot-rolled strip, characterized in that: include, The strap-threading component (1) includes a strap-threading member (11) and a strap-threading hole (12) disposed on the strap-threading member (11); The connecting component (2) includes a strapping cord (21) disposed on the strapping hole (12).
2. The hot-rolled strip threading device as described in claim 1, characterized in that: The threading component (11) includes a threading steel (111) and a threading head (112) disposed on the threading steel; The threading steel (111) is fixedly connected to the threading head (112).
3. The hot-rolled strip threading device as described in claim 2, characterized in that: The threading head (112) is provided with an A end (113) and a B end (114) that is shorter than the length of the A end (113).
4. The hot-rolled strip threading device as described in claim 3, characterized in that: The length of end A (113) is the same as that of the strip steel (111).
5. The hot-rolled strip threading device as described in claim 4, characterized in that: The strap-threading hole (12) includes a first strap-threading hole (121) disposed on the strap-threading head (112), a second strap-threading hole (122) disposed on the strap-threading head (112), and a third strap-threading hole (123) disposed on the strap-threading head (112).
6. The hot-rolled strip threading device as described in claim 3, characterized in that: The strapping member (21) includes a first strapping cord (211) disposed on the strapping hole and a second strapping cord (212) disposed on the first strapping cord (211); The first threading rope (211) is fixedly connected to the second threading rope (212).
7. The hot-rolled strip threading device as described in claim 6, characterized in that: The first threaded rope (211) includes a first segment (2111), a second segment (2112), a third segment (2113), a bent segment (2114), a fourth segment (2115), a fifth segment (2116), a sixth segment (2117), and a seventh segment (2118); The first segment (2111) is fixedly connected to the second threading rope (212).
8. The hot-rolled strip threading device as described in claim 7, characterized in that: It also includes a steel wire (22) disposed on the second threading rope (212); The second threading rope (212) and the seventh segment (2118) are tied together by steel wire (22).
9. The hot-rolled strip threading device as described in claim 8, characterized in that: It also includes a protective sleeve (23) provided on the threading head (112); The protective sleeve (23) is located at the bend (2114).