A three-roller six-arm structure

Abstract

This utility model discloses a three-roller, six-arm structure, comprising a submerged roller, a stabilizing roller, a positioning roller, and six sets of support arms. Its features include: an anti-collision gap unit between the end of each roller shaft and its corresponding support arm, ensuring that only the guard head contacts the baffle when the roller moves axially; rigid connection between adjacent support arms via a tie rod spacing unit, eliminating the need for assembly adjustment; and a same-side bidirectional locking unit between each support arm and its support, achieving support arm positioning through two locking elements located on one side of the support arm. By increasing the gap between the bushing and the arm sleeve to 12-19.5mm, only the guard head and baffle contact during roller movement, reducing the bushing wear rate. Welding the tie rod to the fixing block instead of using nuts reduces the support arm spacing tolerance, improves assembly efficiency, and reduces the risk of loosening. The submerged roller beam employs a three-axis constraint with three set screws to reduce thermal deformation displacement and vibration amplitude. The same-side layout of the set screws and the sliding guide key reduce space requirements and facilitate subsequent maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of hot-dip galvanized metal strip production equipment, and particularly relates to a three-roller six-arm structure. Background Technology

[0002] In hot-dip galvanizing production lines, the three-roll, six-arm structure (including a submerged roll, a stabilizing roll, a positioning roll, and six sets of support arms) is the core equipment for controlling the immersion path of the strip steel. Currently, the industry-standard design has the following technical defects:

[0003] 1. Axial impact leads to frequent wear.

[0004] In traditional production lines, the axial clearance between the submerged roller bushing and the arm bushing in a three-roller, six-arm structure is only 6mm, and the clearance of the stabilizing roller is only 5mm (see...). Figure 1-2 When the roller moves axially (±3-5mm) due to the tension of the strip, the bushing and the arm sleeve collide directly, resulting in a bushing wear rate of >0.12mm / thousand hours.

[0005] 2. Low assembly efficiency of the outrigger tie rod.

[0006] The traditional three-roller, six-arm structure of the production line uses a lead screw and nut to connect the tie rod (see...). Figure 3 The outrigger spacing needs to be manually adjusted (tolerance requirement ±0.5mm);

[0007] In actual assembly, the adjustment takes a long time, the failure rate of loose nuts is high, and the drift of the support arm spacing reaches ±1.8mm, which affects the uniformity of the coating.

[0008] 3. Uncontrolled vibration and displacement of the submerged roller beam

[0009] The traditional three-roller, six-arm structure of the production line only has two sets of set screws to fix the main beam and the beam seat (see...). Figure 4 In a high-temperature environment of 800-850℃, the thermal deformation displacement is ≥1.2mm and the vibration displacement amplitude is ≥0.7mm, which leads to misalignment of the roller system.

[0010] 4. Risk of interference during the assembly and disassembly of the outrigger

[0011] In traditional production lines, the set screws of a three-roller, six-arm structure are positioned on both sides of the support arms (see...). Figure 5-6 The inner top screw protrudes 35mm, with a safety margin of only 12mm between it and the air knife lifting mechanism; this results in a high rate of interference accidents. Utility Model Content

[0012] The purpose of this invention is to provide a three-roller, six-arm structure to solve the technical problem.

[0013] To solve the above-mentioned technical problems, the specific technical solution of this utility model is as follows:

[0014] In some embodiments of this application, a three-roller, six-arm structure is provided, comprising a submerged roller, a stabilizing roller, a positioning roller, and six sets of support arms. Each roller shaft end is provided with an anti-collision gap unit between it and the corresponding support arm, so that only the guard head contacts the baffle when the roller moves axially. Adjacent support arms are rigidly connected by a tie rod spacing unit, which eliminates the need for assembly and adjustment. Each support arm and support is provided with a bidirectional locking unit on the same side, which achieves support arm positioning through two locking members located on one side of the support arm.

[0015] In some embodiments of this application, the anti-collision gap unit includes: an axial gap between the submerged roller bushing and the arm sleeve > 10 mm; and an axial gap between the stabilizing roller bushing and the arm sleeve > 15 mm.

[0016] In some embodiments of this application, the tie rod spacing unit includes a fixing block welded to the support arm, the tie rod passes through the fixing block and retains a radial assembly gap, and a permanent fixed connection is formed after welding.

[0017] In some embodiments of this application, the same-side bidirectional locking unit includes: a first locking member screwed into the threaded hole of the support arm to tighten the support; and a second locking member penetrating the support to push the contact surface of the support arm.

[0018] In some embodiments of this application, a three-dimensional constraint unit is provided between the submerged roller beam and the beam seat, comprising clamping components arranged in at least three directions.

[0019] In some embodiments of this application, an axial sliding guide unit is provided between the bottom of the support arm and the support, and the keyway length is greater than the key width.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] By widening the gap between the bushing and the arm sleeve to 12-19.5mm, only the head guard and the baffle contact when the roller moves, reducing the wear rate of the bushing; by replacing the nut connection with welding the tie rod to the fixing block, the tolerance of the support arm spacing is reduced, the assembly efficiency is improved and the risk of loosening is reduced; the submerged roller beam adopts a three-axis constraint with three top screws to reduce thermal deformation displacement and vibration amplitude, and adopts a top screw layout on the same side and guide key sliding to reduce space requirements and facilitate subsequent maintenance. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 A schematic diagram of the original three-roller six-arm structure provided for an embodiment of this utility model;

[0024] Figure 2 A schematic diagram of the original three-roller six-arm structure provided for an embodiment of this utility model;

[0025] Figure 3 A schematic diagram of the original three-roller six-arm tie rod installation structure provided for an embodiment of this utility model;

[0026] Figure 4 This is a schematic diagram of the original submerged roller beam and submerged roller beam seat structure provided in an embodiment of the present utility model;

[0027] Figure 5 A schematic diagram of the original three-roller six-arm installation structure provided for an embodiment of this utility model;

[0028] Figure 6 A schematic diagram of the original three-roller six-arm installation structure provided for an embodiment of this utility model;

[0029] Figure 7 Schematic diagrams of the new three-roller six-arm installation from different perspectives provided in the embodiments of this utility model;

[0030] Figure 8 Schematic diagrams of the new three-roller six-arm installation from different perspectives provided in the embodiments of this utility model;

[0031] Figure 9 Schematic diagrams of the new three-roller six-arm installation from different perspectives provided in the embodiments of this utility model;

[0032] Figure 10 Schematic diagrams of the new three-roller six-arm structure under different states provided for embodiments of the utility model;

[0033] Figure 11 Schematic diagrams of the new three-roller six-arm structure under different states provided for embodiments of the utility model;

[0034] Figure 12 Schematic diagrams of the new three-roller six-arm structure under different states provided for embodiments of the utility model;

[0035] Figure 13 Schematic diagrams of the new three-roller six-arm structure under different states provided for embodiments of the utility model;

[0036] Figure 14 A schematic diagram of the tie rod installation structure of the new three-roller six-arm assembly provided for an embodiment of the utility model. Detailed Implementation

[0037] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0038] To better understand the purpose, structure, and function of this utility model, a more detailed description of this utility model is provided below with reference to the accompanying drawings.

[0039] Example 1

[0040] The embodiments of this application include: a submerged roller 1, a stabilizing roller 2, a positioning roller 3, and six sets of support arms supporting the three rollers. Among them, the axial anti-collision unit has an axial gap of 10-15mm between the submerged roller bushing 101 and the submerged roller arm sleeve 102, and an axial gap of 18-22mm between the stabilizing roller bushing 201 and the stabilizing roller arm sleeve 202.

[0041] Support arm tie rod fixing unit: The two ends of the tie rod 3 connecting the adjacent support arms are welded to the support arms through fixing blocks 301. There is an installation adjustment gap of 2-5mm between the tie rod and the fixing block.

[0042] Same-side positioning unit for set screws: Two set screws 5 located on the same side are provided at the connection between each set of support arms and support, including an upper set screw that is screwed into the support arm and a lower set screw that pushes the contact surface of the support arm.

[0043] Three sets of top screws are provided between the submerged roller beam 6 and the submerged roller beam seat 7 to constrain the displacement in the lateral, longitudinal and vertical directions, respectively.

[0044] A guide key 503 is provided between the support arm and the support base. The keyway length of the guide key 503 is greater than the key width, allowing the support arm to slide and be disassembled along the axial direction.

[0045] The thickness of the submerged roller support arm 401 is 90-110mm and the width is 320-360mm;

[0046] The thickness of the stabilizing roller support arm 402 and the positioning roller support arm 403 is 65-75mm and the width is 200-240mm.

[0047] The gap between the protective head and the submerged roller baffle is 5-7mm, and the gap between the protective head and the stabilizing roller baffle is 4-5mm.

[0048] The upper set screw is provided with an adjusting nut at its end, and the set screw is driven to move axially by turning the nut.

[0049] All rollers and support arms are made of 316L stainless steel, with the submerged roller having a wall thickness of 38-42mm and the stabilizing and positioning rollers having a wall thickness of 28-32mm.

[0050] Example 2

[0051] This embodiment includes: a submerged roller 1, a stabilizing roller 2, a positioning roller 3, and six sets of support arms for supporting the three rollers. A submerged roller bushing 101 is fitted onto the shaft end of the submerged roller 1, and a submerged roller arm sleeve 102 is fixed to the submerged roller support arm 401, with an axial gap of 10-15mm between them. A stabilizing roller bushing 201 is fitted onto the shaft end of the stabilizing roller, and a stabilizing roller arm sleeve 202 is fixed to the stabilizing roller support arm, with an axial gap of 18-22mm between them. A protective head is fixed to the shaft end of the submerged roller 1, and a submerged roller baffle is fixed to the submerged roller arm sleeve 102, with a gap of 5-7mm between them. A protective head is fixed to the shaft end of the stabilizing roller 2, and a stabilizing roller baffle is fixed to the stabilizing roller arm sleeve 202, with a gap of 4-5mm between them.

[0052] The tie rod 3 runs through both sides of the support arm, and its two ends are welded to the fixing block 301. The fixing block 301 is welded to the side of the support arm, and a radial gap of 2-5mm is maintained between the tie rod 3 and the inner hole of the fixing block 301.

[0053] Both screws 5 are located on the same side of the support arm. The upper screw is screwed into the threaded hole of the support arm, and its end presses against the side wall of the support. The lower screw passes through the mounting hole of the support, and its end pushes against the vertical contact surface of the support arm.

[0054] The submerged roller beam 6 is placed on the submerged roller beam seat 7, and three sets of set screws 5 are provided between the two. The set screws 5 are screwed into the screw holes of the beam seat, and their ends are respectively pressed against the transverse side, longitudinal end face and bottom surface of the beam.

[0055] The bottom of the support arm is provided with a keyway, and the guide key 503 is fixed on the support. The key is embedded in the keyway of the support arm. The length of the keyway is 3-10mm greater than the width of the key, so that the support arm can slide along the key axis.

[0056] An adjusting nut is fitted onto the rod portion of the upper set screw, with the nut resting against the outer surface of the support arm. Tightening the nut drives the upper set screw to move axially.

[0057] The body of the submerged roller 1 is welded to the roller shaft, and bushings are fitted at both ends of the roller shaft; the body of the stabilizing roller 2 is welded to the roller shaft, and bushings are fitted at both ends of the roller shaft.

[0058] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0060] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0061] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A three-roller, six-arm structure, comprising: The submerged roller, stabilizing roller, positioning roller, and six sets of support arms are characterized in that: each roller shaft end is provided with an anti-collision gap unit between the end of each roller shaft and the corresponding support arm, so that only the guard head contacts the baffle when the roller moves axially; adjacent support arms are rigidly connected by a tie rod spacing unit, which eliminates the need for assembly and adjustment; each support arm and the support are provided with a bidirectional locking unit on the same side, and the support arm is positioned by two locking parts located on one side of the support arm.

2. The three-roller six-arm structure according to claim 1, characterized in that: The anti-collision gap unit includes: an axial gap between the submerged roller bushing and the arm sleeve > 10 mm; and an axial gap between the stabilizing roller bushing and the arm sleeve > 15 mm.

3. The three-roller six-arm structure according to claim 1, characterized in that: The tie rod spacing unit includes a fixing block welded to the support arm, the tie rod passes through the fixing block and retains a radial assembly gap, and a permanent fixed connection is formed after welding.

4. The three-roller six-arm structure according to claim 1, characterized in that: The same-side bidirectional locking unit includes: a first locking member screwed into the threaded hole of the support arm to tighten the support; and a second locking member penetrating the support to push the contact surface of the support arm.

5. The three-roller six-arm structure according to claim 1, characterized in that: A three-dimensional constraint unit is provided between the submerged roller beam and the beam seat, which includes clamping components arranged in at least three directions.

6. The three-roller six-arm structure according to claim 1, characterized in that: An axial sliding guide unit is provided between the bottom of the support arm and the support, and the keyway length is greater than the key width.

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