Plate strip clamping mechanism applied to coiling annealing furnace
By using an adaptive clamping system that combines a guide seat and a spring, along with a double-layer insulation barrel structure, the problems of insufficient clamping force and heat loss in the clamping mechanism of the hot rolling coiling furnace are solved, achieving stable clamping and improved thermal energy management efficiency under high-temperature conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-24
AI Technical Summary
The clamping mechanism of existing hot rolling coiling furnaces is prone to slippage or clamping failure under strip tension, and the heat loss in the clamping area is serious, affecting product quality and production efficiency.
An adaptive clamping system with a guide seat and spring is adopted, combined with a double-layer insulated barrel structure. The adaptive clamping is achieved by the cooperation of the guide seat and the jaws, and the aerogel composite material is used to reduce heat loss.
It improves the clamping stability and thermal management efficiency of strip in high-temperature environments, ensures that the clamping force adapts to tension changes, reduces heat loss, and enhances process stability and energy efficiency.
Smart Images
Figure CN224026134U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to hot rolling coiling furnace technical field, concretely relates to a plate strip clamping mechanism for coiling annealing furnace. BACKGROUND
[0002] In the production process of hot rolling coiling furnace, the stable clamping and heat preservation effect of the strip directly affect the product quality and production efficiency. In the prior art, the clamping mechanism often has the following problems: insufficient clamping force: the traditional clamping mechanism relies on manual operation or fixed clamping force, and it is difficult to adapt to the dynamic change of the strip under the action of tension, which easily leads to slipping or clamping failure. Serious heat loss: the clamping area lacks effective heat preservation design, which leads to rapid temperature drop of the strip, affecting the annealing process effect. In view of the above problems, the utility model provides a novel plate strip clamping mechanism, which realizes self-adaptive adjustment of clamping force through the cooperation of the guide seat and the spring, and reduces heat loss by combining the double-layer heat preservation barrel structure, thereby significantly improving the process stability and energy efficiency. SUMMARY
[0003] The utility model aims at providing a coiling annealing furnace plate strip clamping mechanism, which realizes self-adaptive clamping of the strip under the action of tension by optimizing the clamping structure design, and effectively reduces heat loss through the heat preservation barrel structure.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0005] A coiling annealing furnace plate strip clamping mechanism, comprising a jaw, a clamping wrench and a heat preservation barrel, characterized in that: the clamping mechanism further comprises a guide seat, the heat preservation barrel is in the shape of a cylinder, the jaw extends along the direction parallel to the axis of the heat preservation barrel, forming a clamping angle matching the running direction of the strip; the clamping wrench is fixedly connected with the guide seat through a rigid connecting piece, the guide seat is driven to run when the clamping wrench rotates, the jaw moves linearly along the guide seat, and then slides to clamp the strip.
[0006] Further, the guide seat is in the structure of a cylinder, a cuboid or a stepped cuboid, the guide seat surface is provided with a guide groove matched with the jaw, and the jaw slides under the action of the cam in cooperation with the guide groove. The cam cooperates with the guide groove to realize the linear movement of the jaw along the surface of the guide seat.
[0007] Further, a spring support rod is fixed on the guide seat, the spring support rod extends upward along the vertical direction of the upper surface of the guide seat, the top end of the spring support rod is provided with a bolt for fixing the spring, one end of the spring is fixedly connected with the bolt for fixing the spring, and the other end is fixedly connected with the upper surface of the jaw.
[0008] Further, the fixed spring has a certain tensile pre-stress, and in the process that the bolt of the fixed spring drives the spring to move upward, the tensile force drives the jaw to move upward to clamp the strip; a spring is arranged between the clamping wrench and the guide seat, and the spring is pre-compressed between the guide seat and the rack, and when the strip is stretched under tension, the spring releases the elastic force to push the jaw to clamp further.
[0009] Further, a transmission mechanism is arranged between the clamping wrench and the guide seat, and two ends of the transmission mechanism are fixedly connected with the clamping wrench and the guide seat respectively.
[0010] Further, the jaw is a plate structure extending along the axis of the heat preservation barrel, and a cutting surface is arranged at the contact position of the jaw and the strip, and the angle of the cutting surface is designed to be able to contact the strip at all positions when the cutting surface is attached to the strip.
[0011] Further, when the guide seat is cylindrical, the jaw is provided with a cylindrical groove, and the diameter of the groove is slightly larger than the diameter of the required guide seat, so that the jaw moves relatively linearly along the guide seat.
[0012] Further, a hinge is arranged between the heat preservation barrel and the clamping wrench, and the clamping wrench rotates around the hinge on the heat preservation barrel as the rotation center; a limiting structure is arranged on the hinge, and the limiting mechanism limits the maximum position of the clamping wrench inward and outward.
[0013] Further, four clamping wrenches are arranged, and the four clamping wrenches are arranged in pairs at two ends of the heat preservation barrel, and each pair of clamping wrenches rotates around the respective hinge to realize clamping of the clamping wrench.
[0014] Further, the heat preservation barrel is composed of a double-layer frame structure, and a heat insulation pad is arranged between the double-layer frame, and the heat insulation pad is made of aerogel composite material.
[0015] Compared with the prior art, the utility model is an innovative clamping system, which aims to improve the clamping stability and thermal energy management efficiency of the strip in a high temperature environment. The scheme includes a jaw, a clamping wrench, a guide seat, a spring and a heat preservation barrel. The jaw extends along the axis of the heat preservation barrel, and the guide seat is driven to move by rotating the clamping wrench, so that the jaw slides and clamps the strip. The jaw is designed with a cutting surface to ensure uniform clamping of the strip. A pre-stretched spring is arranged in the mechanism, which can release the elastic force when the strip is stretched under tension, push the jaw to clamp further, and realize self-adaptive adjustment. In addition, the heat preservation barrel adopts a double-layer frame structure, and a heat insulation pad made of aerogel composite material is arranged in the middle, which effectively reduces heat loss and improves thermal efficiency. The mechanism is configured with multiple jaws to adapt to the clamping requirements of strips of different specifications, and the clamping stability and thermal energy management effect are significantly improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:
[0017] Figure 1 : Plate strip clamping mechanism cross-sectional view. Among them, the arrow is the running direction of the plate strip.
[0018] Figure 2 : Plate strip clamping mechanism front view schematic diagram.
[0019] Figure 3 : Local enlarged view of the cooperation between the guide seat and the jaw.
[0020] Figure 4 : Detail schematic diagram of the spring support rod and the spring connection.
[0021] Figure 5 : Structure perspective view of the cooperation between the jaw and the guide seat.
[0022] In the drawings: 1 - strip, 2 - jaw, 3 - clamping wrench, 4 - spring, 5 - guide seat, 6 - heat preservation barrel, 7 - transmission mechanism, 8 - spring support rod, 9 - section, 10 - hinge. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0024] Embodiment 1:
[0025] Referring to Figures 1-4 , the present embodiment provides a plate strip clamping mechanism of a coiling annealing furnace, which comprises a jaw 2, a clamping wrench 3 and a heat preservation barrel 6. The heat preservation barrel 6 is in the shape of a cylinder, used to accommodate the strip 1 and provide a heat preservation environment. The jaw 2 extends along the direction parallel to the axis of the heat preservation barrel 6 (i.e. along the direction perpendicular to the paper plane of Figure 1 or the horizontal direction in Figure 2 ), forming a clamping angle matching the running direction of the strip 1, ensuring that the strip 1 can be stably clamped during running. The clamping wrench 3 is fixedly connected with the guide seat 5 through a rigid connecting piece, when the clamping wrench 3 rotates, it can drive the guide seat 5 to rotate synchronously, and then drive the jaw 2 to move relatively along the guide seat 5 in a straight line, realizing the sliding clamping of the strip 1.
[0026] An optional embodiment, the guide seat 5 adopts a cylindrical structure, and the surface thereof is provided with a guide groove matched with the jaw 2. The jaw 2 is matched with the guide groove to slide under the action of a cam. The cam is matched with the guide groove to realize the linear motion of the jaw 2 along the surface of the guide seat 5. The guide seat 5 is fixed with a support rod of the spring 4, the support rod of the spring 4 extends vertically upward along the upper surface of the guide seat 5, and the top end thereof is provided with a bolt for fixing the spring 4. One end of the spring 4 is fixedly connected with the bolt for fixing the spring 4, and the other end is fixedly connected with the upper surface of the jaw 2. The specific spring connection structure can be referred to Figure 2 . The spring 4 has a certain tensile prestress. When the bolt for fixing the spring 4 drives the spring 4 to move upward, the spring 4 is stretched to drive the jaw 2 to move upward, so as to clamp the strip 1. When the strip 1 is stretched under tension, the movement direction of the strip 1 is as shown by the arrow in Figure 1 . The movement direction of the strip is opposite to the movement direction of the jaw 2. The spring 4 releases the elastic force to further clamp the jaw 2, so as to ensure that the strip 1 does not loosen during the annealing process. In this embodiment, the guide seat 5 is cylindrical, and the jaw 2 is provided with a cylindrical groove. The diameter of the groove is slightly larger than the diameter of the guide seat 5, so as to realize the relative linear motion of the jaw 2 along the guide seat 5. The cylindrical groove and the cylindrical guide seat 5 have better self-adaptability, can automatically adjust the clamping angle during the movement of the strip 1, and reduce the wear and deformation of the strip 1. At the same time, the manufacturing process of this matching mode is relatively simple, and the maintenance cost is relatively low.
[0027] A transmission mechanism 7 is arranged between the clamping wrench 3 and the guide seat 5. The two ends of the transmission mechanism 7 are fixedly connected with the clamping wrench 3 and the guide seat 5 respectively, for transmitting the rotary motion of the clamping wrench 3 to the guide seat 5. Further, the guide seat 5 can drive the jaw 2 to move to the central position to press the strip 1
[0028] As shown in Figures 1-3 , the jaw 2 is a plate structure extending along the axis of the holding barrel 6. The contact part of the jaw 2 with the strip 1 is provided with a cutting surface 9. The angle of the cutting surface 9 is designed to be able to contact the strip 1 at all positions when the cutting surface 9 is in contact with the strip 1, so as to ensure uniform distribution of clamping force. The cutting surface 9 can be designed in a sawtooth shape or a wave shape, so as to increase the friction coefficient between the cutting surface 9 and the strip 1, and further improve the effect of fastening the strip 1. The contact part of the jaw 2 with the strip 1 is provided with the cutting surface 9, and the angle of the cutting surface 9 is 15°. This angle design ensures that the cutting surface 9 can contact the strip 1 at all positions when the cutting surface 9 is in contact with the strip 1, so as to realize uniform distribution of clamping force. The surface of the cutting surface 9 is specially treated, and the surface roughness Ra value is 0.8 μm. The cutting surface 9 can provide sufficient friction to prevent the strip 1 from sliding, and will not scratch the surface of the strip 1.
[0029] A hinge 10 is provided between the insulation container 6 and the clamping wrench 3. The clamping wrench 3 rotates around the hinge 10 on the insulation container 6. A limit structure is provided on the hinge 10, which limits the maximum inward and outward position of the clamping wrench 3 (corresponding to...). Figure 4 The maximum position or corresponding position from the center to the outside of the paper. Figure 3 (At the maximum position from the center and to both sides), to prevent the clamping wrench 3 from being rotated too much, resulting in insufficient or excessive clamping force.
[0030] In this embodiment, the clamping mechanism is equipped with four clamping wrenches 3, which are arranged in pairs at both ends of the insulation barrel 6. Each pair of clamping wrenches 3 at each end of the insulation barrel rotates around its respective hinge 10 to clamp the material. This symmetrical arrangement design ensures the stability of the strip 1 within the insulation barrel 6 and prevents the strip 1 from shifting or deforming during the high-temperature annealing process.
[0031] The insulated container 6 consists of a double-layer frame structure with an insulating pad between the two layers. The insulating pad is made of aerogel composite material. Aerogel composite material has excellent thermal insulation properties, which can effectively reduce heat loss and improve the energy utilization efficiency of the annealing furnace. The double-layer frame structure enhances the mechanical strength of the insulated container 6, enabling it to maintain stable shape and performance under high-temperature environments.
[0032] The insulation tank 6 consists of a double-layer stainless steel frame structure, with a 10mm thick aerogel composite material insulation pad laid between the two layers. The thermal conductivity of the aerogel composite material is 0.015W / (m·K), which is much lower than that of traditional insulation materials, effectively reducing heat loss and improving the energy utilization efficiency of the annealing furnace.
[0033] In practical applications, when it is necessary to clamp the strip 1, the operator first passes the strip 1 through the insulation tank 6, and then rotates the clamping wrench 3. The clamping wrench 3 drives the guide seat 5 to move through the transmission mechanism 7. The guide seat 5 drives the jaws 2 to move linearly along the guide groove, ultimately achieving the clamping of the strip 1. The prestress of the spring 4 ensures that the jaws 2 maintain a continuous clamping force on the strip 1, and can maintain a stable clamping state even when the strip 1 is subjected to tension changes.
[0034] like Figure 5 The hollow jaws 2 are connected to the guide seat 5. The guide seat 5 is slidably fitted inside the hollow jaws 2, allowing the guide seat 5 to move within the hollow structure, thus achieving relative movement between the guide seat 5 and the jaws 2. There are various possible connection methods between the jaws 2 and the guide seat; several feasible structural design schemes are described in Examples 2-3 below.
[0035] Example 2:
[0036] The coiling annealing furnace plate strip clamping mechanism provided in the embodiment is basically the same as that in Embodiment 1, except that the shape of the guide seat 5 is different. In the embodiment, the guide seat 5 adopts a cuboid structure, and the surface thereof is also provided with a guide groove matched with the jaw 2. The jaw 2 is provided with a cam matched with the cuboid guide seat 5, and the cam is matched with the guide groove to realize the linear movement of the jaw 2 along the surface of the guide seat 5.
[0037] Compared with the cylindrical guide seat 5, the cuboid guide seat 5 has better torsion resistance and can maintain a more stable clamping state when the strip 1 is subjected to uneven tension. At the same time, the manufacturing process of the cuboid guide seat 5 is relatively simple, and the cost is lower, which is suitable for large-scale production application.
[0038] Embodiment 3
[0039] The coiling annealing furnace plate strip clamping mechanism provided in the embodiment is basically the same as that in Embodiments 1 and 2, except that the guide seat 5 adopts a stepped cuboid structure. The stepped cuboid guide seat 5 increases the stepped structure on the basis of the cuboid guide seat 5, so that the depth of the guide groove can be changed according to the needs, thereby realizing the adaptive clamping of the strip 1 with different thicknesses.
[0040] The surface of the stepped cuboid guide seat 5 is provided with multiple levels of guide grooves, and the jaw 2 is provided with multiple levels of cams matched therewith. According to the thickness and width of the strip 1, different levels of guide grooves and cams can be selected for cooperation to realize the accurate clamping of the strip 1 with different specifications.
[0041] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope of the application being indicated by the claims.
Claims
1. A clamping mechanism for coiling annealing furnace plates, comprising jaws (2), a clamping wrench (3), and a heat-insulating container (6), characterized in that: The clamping mechanism further includes a guide seat (5), the heat preservation barrel (6) is cylindrical, the jaws (2) extend in a direction parallel to the axis of the heat preservation barrel (6) to form a clamping angle that matches the running direction of the strip (1); the clamping wrench (3) is fixedly connected to the guide seat (5) through a rigid connector, and when the clamping wrench (3) rotates, it drives the guide seat (5) to run, and the jaws (2) move linearly along the guide seat (5) to slide and clamp the strip (1).
2. The coiling and annealing furnace strip clamping mechanism according to claim 1, characterized in that: The guide seat (5) is a long column, cuboid or stepped cuboid structure. The surface of the guide seat (5) is provided with a guide groove that cooperates with the jaws (2). Under the action of the cam, the jaws (2) slide up and down along the guide groove, so that the jaws (2) move along the surface of the guide seat (5) to realize the opening and closing action of the jaws (2).
3. The coiling and annealing furnace strip clamping mechanism according to claim 2, characterized in that: A spring support rod (8) is fixed on the guide seat (5). The spring support rod (8) extends upward along the vertical direction of the upper surface of the guide seat (5). A bolt for fixing the spring (4) is provided at its top end. One end of the spring (4) is fixedly connected to the bolt for fixing the spring (4), and the other end is fixedly connected to the upper surface of the jaw (2).
4. The coiling and annealing furnace strip clamping mechanism according to claim 3, characterized in that: The fixed spring (4) has a certain tensile preload. During the upward movement of the fixed spring (4) driven by the bolt, the tension drives the jaws (2) to move upward and clamp the strip (1).
5. The coiling and annealing furnace strip clamping mechanism according to claim 1, characterized in that: A transmission mechanism (7) is provided between the clamping wrench (3) and the guide seat (5), and the two ends of the transmission mechanism (7) are fixedly connected to the clamping wrench (3) and the guide seat (5) respectively.
6. The coiling and annealing furnace strip clamping mechanism according to claim 2, characterized in that: The jaws (2) are two plate structures that extend along the axial direction of the insulation barrel (6). The contact area between the jaws and the strip is provided with a cut surface (9). The angle of the cut surface is designed so that when it is in contact with the strip (1), all positions of the cut surface (9) can contact the strip (1).
7. The coiling and annealing furnace strip clamping mechanism according to claim 2, characterized in that: When the guide seat (5) is cylindrical, the jaws (2) are provided with a cylindrical groove. The diameter of the groove is slightly larger than the diameter of the required guide seat, so that the jaws (2) can move relatively linearly along the guide seat (5).
8. The coiling and annealing furnace strip clamping mechanism according to claim 1, characterized in that: A hinge (10) is provided between the heat preservation bucket (6) and the clamping wrench (3). The clamping wrench (3) rotates around the hinge on the heat preservation bucket (6) as the rotation center. A limit structure is provided on the hinge (10), and the limit mechanism restricts the maximum position of the clamping wrench (3) rotation.
9. The coiling and annealing furnace strip clamping mechanism according to claim 1, characterized in that: There are 4 clamping wrenches (3). The 4 clamping wrenches (3) are arranged in pairs at both ends of the heat preservation barrel (6). Each pair of clamping wrenches (3) at each end rotates around its respective hinge to achieve clamping.
10. The coiling and annealing furnace strip clamping mechanism according to claim 1, characterized in that: The insulated bucket (6) is composed of a double-layer frame structure, with a heat insulation pad laid between the double-layer frame. The heat insulation pad is made of aerogel composite material.