Tension roller replacing device
By designing a tension roll replacement device, the tension roll is stably transported inside and outside the rolling mill using a guiding and transporting mechanism. This solves the problems of time-consuming and labor-intensive replacement and safety hazards in the existing technology, and achieves efficient and safe tension roll replacement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RIZHAO YULAN NEW MATERIAL CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, there is a lack of special tools in the process of replacing the tension roll, which makes the replacement time-consuming and labor-intensive, poses safety hazards, and has limited operating space, making it difficult to achieve one-time hoisting into place.
Design a tension roll replacement device, including a guiding mechanism, a transport mechanism and a driving mechanism. The guiding mechanism is connected by multiple sections of guide rails. The transport mechanism is slidably or rollingly connected to the guide rails. The driving mechanism controls the transport mechanism to enter and exit the rolling mill. The lifting and replacement of the tension roll is completed using the hoisting equipment inside the rolling mill.
It enables stable transport of the tension roll inside and outside the rolling mill, reduces manual labor intensity and safety hazards, improves replacement efficiency and safety, adapts to the characteristics of the narrow space of the rolling mill, simplifies the operation process, and avoids the risk of slippage caused by uneven ground or oil stains.
Smart Images
Figure CN224309288U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rolling mill parts replacement technology, and more specifically, it relates to a tension roll replacement device. Background Technology
[0002] The six-stand pickling and rolling mill is an advanced pickling-rolling unit in China, with a compact yet complex internal working space layout. When changing the tension rolls, the structural feature of the beams being higher than the gantry frame restricts the operating space when using manual chain hoists for lifting operations, making it difficult to find a suitable lifting angle and leverage point. This results in the tension rolls failing to move along the expected path and position during lifting, making it impossible to lift them into place in one go, increasing the difficulty and number of operations required.
[0003] The lack of specialized auxiliary devices for replacing tension rolls presents obstacles throughout the entire roll replacement process, from transportation to hoisting. Without assistance, the tension rolls are difficult to secure and move during transport, and the lack of effective tools for hoisting hinders ease of operation. This forces the roll replacement work to rely solely on manual labor and simple hand tools, resulting in low efficiency, wasted time, increased labor costs, and equipment downtime, impacting the overall production efficiency and capacity of the unit. Furthermore, the confined space of the mill, the numerous equipment components, uneven work surfaces, and oily surfaces increase the risk of roll surface damage and slips, affecting the transport of both old and new tension rolls. Additionally, the transport of tension rolls requires multiple people to drag them simultaneously, leading to low efficiency, safety hazards, and making the replacement process extremely cumbersome, time-consuming, and labor-intensive. Utility Model Content
[0004] The purpose of this utility model is to provide a tension roller replacement device, which aims to solve the problem that the existing tension rollers do not have special tools for replacement, resulting in a time-consuming and labor-intensive replacement process and potential safety hazards.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A tension roll changing device is provided, comprising:
[0007] The guiding mechanism has one end located inside the rolling mill and the other end extending outside the rolling mill. The guiding mechanism includes multiple guide rails distributed sequentially along a first path, with two adjacent guide rails interlocking with each other.
[0008] A transport mechanism, slidably or rollingly connected to the guide rail, is used to carry the tension roller; and
[0009] A drive mechanism, connected to the transport mechanism, is used to drive the transport mechanism to move along the guide rail, so as to enable the transport mechanism to enter and exit the rolling mill.
[0010] In one possible implementation, a locking hook is provided on one side of the guide rail, and a locking block is provided on the other side along the first path. The locking hook is used to engage with the locking block of the adjacent guide rail.
[0011] In one possible implementation, the guide rail is provided with locking hooks on opposite sides of the second path, the locking block is provided corresponding to the locking hooks, and the second path is perpendicular to the first path.
[0012] In one possible implementation, the shipping mechanism includes a shipping frame and rollers rotatably connected to the shipping frame, the guide rail having a guide groove along the first path, and the rollers being disposed within the guide groove.
[0013] In one possible implementation, the drive mechanism includes:
[0014] A fixing frame is connected to one end of the guide mechanism;
[0015] A driving component is provided on the fixed frame; and
[0016] A traction component is connected to the drive component, which controls the traction component to move along the first path to enable the transport mechanism to enter and exit the rolling mill.
[0017] In one possible implementation, the driver includes:
[0018] Mounting bracket, connected to the fixed frame, the mounting bracket having a winding space;
[0019] A take-up shaft, disposed within the take-up space and rotatably connected to the mounting bracket, wherein one end of the traction member is wound around the outside of the take-up shaft; and
[0020] A hand crank, connected to the take-up shaft, is used to drive the take-up shaft to rotate about its own axis.
[0021] In one possible implementation, the traction element includes:
[0022] A screw extends along the first path, the screw is rotatably connected to the guide mechanism, and the end of the screw is connected to the drive member, the drive member controlling the screw to rotate about its own axis;
[0023] A guide rod, parallel to the screw, and connected to the guiding mechanism; and
[0024] An adjusting nut is screwed onto the screw rod and slidably connected to the guide rod; the adjusting nut is connected to the transport mechanism.
[0025] In one possible implementation, the tension roller changing device further includes a support frame connected to the bottom of the guide mechanism, the support frame being located at the outer end of the guide mechanism and used to provide support force to the guide mechanism.
[0026] In one possible implementation, the support frame is a telescopic member that extends and retracts in the vertical direction.
[0027] In one possible implementation, the transport mechanism has a limiting groove adapted to the tension measuring roller along the first path, the limiting groove being used to limit the tension measuring roller.
[0028] The beneficial effects of the tension roll replacement device provided by this utility model are as follows: Compared with the prior art, one end of the guiding mechanism is placed inside the rolling mill, and the other end is located outside the rolling mill. The transport mechanism carries the tension roll, and the drive mechanism controls the transport device to enter and exit the rolling mill, thereby realizing the delivery of the tension roll into the rolling mill. After the tension roll enters the rolling mill, the lifting and replacement operation of the tension roll is completed by the hoisting equipment inside the rolling mill. The guiding mechanism adopts a design of multiple guide rails distributed sequentially along the first path and interlocking with each other, which ensures the continuity and stability of the transport of the tension roll inside and outside the rolling mill. It effectively solves the problem of difficulty in determining the hoisting angle and force point due to space constraints in traditional hoisting operations, and avoids the cumbersome operation of deviation in the movement path of the tension roll and multiple adjustments. This utility model can adapt to the characteristics of the narrow space inside the rolling mill. The sliding or rolling connection between the transport mechanism and the guide rail makes the carrying and movement of the tension roll more stable, reduces the risk of slippage caused by uneven ground or oil stains, and at the same time reduces the labor intensity and safety hazards of manual dragging. Attached Figure Description
[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art 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.
[0030] Figure 1 A schematic diagram of the tension roller replacement device provided in this embodiment of the utility model;
[0031] Figure 2 for Figure 1 A magnified view of part A in the middle.
[0032] In the diagram: 1. Guiding mechanism; 101. Guide rail; 102. Locking block; 103. Locking hook; 2. Consignment mechanism; 201. Consignment frame; 202. Roller; 3. Drive mechanism; 301. Fixing frame; 302. Drive component; 3021. Mounting bracket; 3022. Hand crank; 303. Traction component; 4. Support frame. Detailed Implementation
[0033] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0034] In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "first," "second," or "third," etc., are used to distinguish different objects, not to describe a specific order. Unless otherwise stated, other directional terms, such as "vertical," "clockwise," and "counterclockwise," indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, not to indicate or imply that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this utility model. In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be interpreted broadly, that is, any connection method in which there is no displacement relationship or relative rotation relationship between the two, that is, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection through other devices or elements. In the claims, description, and accompanying drawings of this utility model, the terms "comprising," "having," and their variations are intended to mean "including but not limited to."
[0035] Please refer to the following: Figure 1 and Figure 2 The tension roll changing device provided by this utility model will now be described. The tension roll changing device includes a guiding mechanism 1, a transport mechanism 2, and a driving mechanism 3. One end of the guiding mechanism 1 is located inside the rolling mill, and the other end extends outside the rolling mill. The guiding mechanism 1 includes a plurality of guide rails 101 distributed sequentially along a first path, with adjacent guide rails 101 abutting each other. The transport mechanism 2 is slidably or rollingly connected to the guide rails 101 and is used to carry the tension roll. The driving mechanism 3 is connected to the transport mechanism 2 and is used to drive the transport mechanism 2 to move along the guide rails 101 to realize the transport mechanism 2 entering and exiting the rolling mill.
[0036] The tension roll replacement device provided by this utility model, compared with the prior art, places one end of the guide mechanism 1 inside the rolling mill and the other end outside the rolling mill. The transport mechanism 2 carries the tension roll, and the drive mechanism 3 controls the transport device to enter and exit the rolling mill, thus enabling the tension roll to be sent into the rolling mill. After the tension roll enters the rolling mill, the lifting and replacement operation is completed using the hoisting equipment inside the rolling mill. The guide mechanism 1 adopts a design with multiple sections of guide rails 101 sequentially distributed and interlocked along the first path, ensuring the continuity and stability of the tension roll's transportation inside and outside the rolling mill. This effectively solves the problem of difficulty in determining the hoisting angle and force point due to space constraints in traditional hoisting operations, avoiding the cumbersome operation of deviation in the tension roll's movement path and multiple adjustments. This utility model can adapt to the characteristics of the narrow space inside the rolling mill. The sliding or rolling connection between the transport mechanism 2 and the guide rails 101 makes the carrying and movement of the tension roll more stable, reducing the risk of slippage due to uneven ground or oil stains, while also reducing the labor intensity and safety hazards of manual dragging.
[0037] In some embodiments, please refer to Figure 2 A locking hook 103 is provided on one side of the guide rail 101, and a locking block 102 is provided on the other side along the first path. The locking hook 103 is used to engage with the locking block 102 of the adjacent guide rail 101.
[0038] In this embodiment, by setting a locking hook 103 on one side of the guide rail 101 and a locking block 102 on the other side along the first path, adjacent guide rails 101 can achieve a quick and stable connection through the engagement of the locking hook 103 and the locking block 102, effectively improving the overall rigidity and reliability of the guiding mechanism 1. This design not only simplifies the assembly and disassembly process of the guide rail 101 and reduces the time for manual adjustment and fixing, but also ensures the precise alignment of multiple guide rail sections 101 during docking, avoiding jamming or offset of the transport mechanism 2 due to loose connections, thereby ensuring the smooth movement of the tension roller during transportation. In addition, the mechanical interlocking structure of the locking hook 103 and the locking block 102 enhances the vibration and impact resistance of the guide rail 101 system, maintaining a stable connection even under complex working conditions inside the rolling mill, further reducing safety hazards caused by misalignment or separation of the guide rail 101, and improving the operational efficiency and safety of the entire replacement device.
[0039] Optionally, the locking hook 103 is rotatably connected to the guide rail 101 to lock or unlock with the adjacent locking block 102.
[0040] Optionally, the locking hook 103 is slidably connected to the guide rail 101, and a spring is provided between the locking hook 103 and the guide rail 101. The spring is configured with a preload force to keep the locking hook 103 and the locking block 102 locked.
[0041] Optionally, the guide rail 101 is provided with locking blocks 102 on both sides of the first path, and the locking blocks 102 of two adjacent guide rails 101 are locked by locking hooks 103.
[0042] In some embodiments, please refer to Figure 1 The guide rail 101 is provided with locking hooks 103 on both sides of the second path, and the locking block 102 is provided correspondingly to the locking hooks 103. The second path is perpendicular to the first path.
[0043] By setting locking hooks 103 on opposite sides of the guide rail 101 along the second path and setting locking blocks 102 at corresponding positions, the guide rail 101 can achieve stable docking not only in the first path direction but also have reliable connection capability in the perpendicular second path direction, thus forming a bidirectional locking structure and improving the overall rigidity and stability of the guide rail 101 system. This bidirectional locking design effectively prevents the guide rail 101 from shifting laterally or twisting during transportation due to uneven force or vibration, ensuring that the transport mechanism 2 can still maintain stable operation under complex working conditions, further improving the accuracy and safety of tension roller transportation.
[0044] In some embodiments, please refer to Figure 1 The shipping mechanism 2 includes a shipping frame 201 and a roller 202 rotatably connected to the shipping frame 201. The guide rail 101 has a guide groove along the first path, and the roller 202 is located in the guide groove.
[0045] The guide groove limits the movement of the roller 202, preventing the transport mechanism 2 from deviating or derailing during operation, thus improving the precision control of the transport path. Simultaneously, the rolling friction characteristics of the roller 202 significantly reduce the load on the manual pushing or driving mechanism 3, lowering operational intensity and increasing transport efficiency. This structural design fully utilizes the limited space inside the rolling mill, achieving smooth transport of the tension rolls through compact mechanical coordination. It solves the space limitations of traditional hoisting methods and overcomes the risks of oil slippage and roll surface damage associated with ground dragging, significantly improving the standardization and ease of operation of roll changing.
[0046] In some embodiments, please refer to Figure 1 The drive mechanism 3 includes a fixed frame 301, a drive member 302, and a traction member 303. The fixed frame 301 is connected to one end of the guide mechanism 1. The drive member 302 is located on the fixed frame 301. The traction member 303 is connected to the drive member 302. The drive member 302 is used to control the traction member 303 to move along the first path so as to realize the transport mechanism 2 entering and exiting the rolling mill.
[0047] The drive unit 302 precisely controls the reciprocating motion of the traction unit 303 along the first path, enabling the transport mechanism 2 to smoothly enter and exit the rolling mill along a predetermined trajectory, completely avoiding the instability and safety hazards of traditional manual dragging methods. This design not only achieves automated control of the tension roll transport process, reducing reliance on manpower, but also effectively prevents equipment vibration or tension roll displacement caused by sudden speed changes through the uniform motion characteristics of mechanical traction, ensuring a smooth and reliable transport process. Simultaneously, the standardized operating procedures of the drive mechanism 3 significantly reduce the operational difficulty and labor intensity for operators, shorten roll changing time, reduce the impact of equipment downtime on production, and the mechanical traction method completely avoids the impact of oily ground conditions on operational safety, providing reliable technical support for the efficient maintenance of the acid continuous rolling mill.
[0048] Optionally, the drive component 302 is a winch, and the traction component 303 is a traction rope wound around the winch.
[0049] Optionally, when conveying the tension roll, the winch is placed inside the mill, and the winch is used to drive the transport mechanism 2 to move into the mill.
[0050] In some embodiments, please refer to Figure 1 The drive unit 302 includes a mounting bracket 3021, a take-up shaft, and a hand crank 3022. The mounting bracket 3021 is connected to the fixed frame 301 and has a take-up space. The take-up shaft is located in the take-up space and is rotatably connected to the mounting bracket 3021. One end of the traction member 303 is wound around the take-up shaft. The hand crank 3022 is connected to the take-up shaft and is used to drive the take-up shaft to rotate around its own axis.
[0051] This embodiment is particularly suitable for the explosion-proof requirements of rolling mill environments. It can complete traction operations without a power supply, avoiding potential electrical component failures in oily environments and reducing equipment costs and maintenance difficulty. The ergonomic design of the hand-cranked operation significantly reduces the labor intensity of operators. The reasonable transmission ratio setting achieves labor-saving operation, allowing a single person to complete traction operations that originally required multiple people. This greatly improves the safety and efficiency of roll changing operations, making it especially suitable for use in space-constrained and complex rolling mill areas.
[0052] Optionally, the traction component 303 can be a flexible component, such as a steel wire rope.
[0053] In some embodiments, please refer to Figure 1The traction component 303 includes a screw, a guide rod, and an adjusting nut. The screw extends along a first path and is rotatably connected to the guide mechanism 1. The end of the screw is connected to the drive component 302, which controls the screw to rotate around its own axis. The guide rod is parallel to the screw and connected to the guide mechanism 1. The adjusting nut is screwed to the screw and slidably connected to the guide rod. The adjusting nut is connected to the transport mechanism 2.
[0054] The screw drive system converts the rotational motion of the drive component 302 into the linear motion of the adjusting nut. The self-locking characteristic of the threaded pair effectively prevents accidental slippage or retraction of the transport mechanism 2 during transportation, significantly improving operational safety. The parallel guide rods and screw form a double-track constraint, ensuring the adjusting nut maintains a stable trajectory during movement, completely avoiding the swaying or jamming that can occur with traditional traction methods. The uniform speed characteristic of the screw drive ensures smooth movement of the tension roll, preventing equipment impact caused by sudden starts and stops. This fully mechanical traction solution is not only simple, reliable, and easy to maintain, but also boasts advantages such as high load-bearing capacity and high positioning accuracy. It is particularly suitable for safe and efficient replacement of the tension roll in rolling mill conditions with limited space and harsh environments, significantly improving the standardization and ease of operation of roll changing operations.
[0055] Optionally, the drive unit 302 is a motor.
[0056] In some embodiments, please refer to Figure 1 The tension roller replacement device also includes a support frame 4 connected to the bottom of the guide mechanism 1. The support frame 4 is located at the outer end of the guide mechanism 1 and is used to provide support force to the guide mechanism 1.
[0057] The support frame 4 provides additional support for the guide mechanism 1 extending outside the mill, effectively preventing the long-span guide rail 101 from sinking or deforming due to its own weight or load, ensuring the levelness and straightness of the guide rail 101 system, thereby guaranteeing the smooth operation of the transport mechanism 2 during the transport of the tension roll. This support design specifically solves the problem of insufficient rigidity caused by the excessively long suspended section at the mill inlet and outlet of traditional replacement devices. By reasonably distributing the load, it avoids stress concentration at the connection points of the guide rail 101, extending the service life of the device. The setting of the support frame 4 also enhances the vibration resistance of the entire system under dynamic loads, preventing the guide rail 101 from shaking due to mill operating vibrations, further improving the positioning accuracy and safety of tension roll transport.
[0058] In some embodiments, please refer to Figure 1 The support frame 4 is a telescopic component that extends and retracts in the vertical direction.
[0059] The telescopic support structure allows for free adjustment of the horizontal height of the guide mechanism 1 according to on-site conditions, effectively solving installation problems caused by uneven ground at the mill inlet and outlet or differences in foundation height, ensuring that the guide rail 101 system always maintains optimal working condition. Its adjustable characteristics not only compensate for minor deformations caused by long-term equipment use but also allow for precise leveling to meet the transportation requirements of different specifications of tension rolls, significantly improving the stability and safety of the transportation process. This telescopic component ensures support rigidity while offering the convenience of rapid adjustment; operators can complete height adjustments without the need for additional tools, greatly shortening equipment preparation time.
[0060] Optionally, the support frame 4 can be a pneumatic or hydraulic telescopic mechanism.
[0061] In some embodiments, please refer to Figure 1 The transport mechanism 2 has a limiting groove adapted to the tension measuring roller along the first path. The limiting groove is used to limit the tension measuring roller.
[0062] The precise design of the limiting groove allows the tension measuring roller to naturally embed and maintain a stable posture, completely avoiding the risk of rolling or shifting during transportation and significantly improving transportation safety. Its customized groove structure not only ensures a perfect fit between the tension measuring roller and the transport mechanism 2, but also distributes load pressure by increasing the contact area, preventing damage to the roller surface during transportation. This design significantly simplifies the loading and unloading process of the tension measuring roller; operators only need to place the tension measuring roller into the limiting groove for automatic centering and fixing, eliminating the cumbersome operations and time consumption required by traditional binding and fixing, making the entire roller changing process more efficient and convenient.
[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A tension roll changing device, characterized in that, include: The guiding mechanism has one end located inside the rolling mill and the other end extending outside the rolling mill. The guiding mechanism includes multiple guide rails distributed sequentially along a first path, with adjacent guide rails interlocking with each other. A transport mechanism is slidably or rollingly connected to the guide rail, and the transport mechanism is used to carry the tension roller; as well as A drive mechanism, connected to the transport mechanism, is used to drive the transport mechanism to move along the guide rail, so as to enable the transport mechanism to enter and exit the rolling mill.
2. The tension roller changing device as described in claim 1, characterized in that, A locking hook is provided on one side of the guide rail, and a locking block is provided on the other side along the first path. The locking hook is used to engage with the locking block of the adjacent guide rail.
3. The tension roller changing device as described in claim 2, characterized in that, The guide rail is provided with locking hooks on opposite sides of the second path, and the locking block is provided corresponding to the locking hooks. The second path is perpendicular to the first path.
4. The tension roller changing device as described in claim 1, characterized in that, The shipping mechanism includes a shipping frame and rollers rotatably connected to the shipping frame. The guide rail has a guide groove along the first path, and the rollers are disposed in the guide groove.
5. The tension roller changing device as described in claim 1, characterized in that, The drive mechanism includes: A fixing frame is connected to one end of the guide mechanism; A driving component is provided on the fixed frame; and A traction component is connected to the drive component, which controls the traction component to move along the first path to enable the transport mechanism to enter and exit the rolling mill.
6. The tension roller changing device as described in claim 5, characterized in that, The driving component includes: Mounting bracket, connected to the fixed frame, the mounting bracket having a winding space; A take-up shaft, disposed within the take-up space and rotatably connected to the mounting bracket, wherein one end of the traction member is wound around the outside of the take-up shaft; and A hand crank, connected to the take-up shaft, is used to drive the take-up shaft to rotate about its own axis.
7. The tension roller changing device as described in claim 5, characterized in that, The traction component includes: A screw extends along the first path, the screw is rotatably connected to the guide mechanism, and the end of the screw is connected to the drive member, the drive member controlling the screw to rotate about its own axis; A guide rod, parallel to the screw, and connected to the guiding mechanism; and An adjusting nut is screwed onto the screw rod and slidably connected to the guide rod; the adjusting nut is connected to the transport mechanism.
8. The tension roller changing device as described in claim 1, characterized in that, The tension roller replacement device also includes a support frame connected to the bottom of the guide mechanism. The support frame is located at the outer end of the guide mechanism and is used to provide support for the guide mechanism.
9. The tension roller changing device as described in claim 8, characterized in that, The support frame is a telescopic component that extends and retracts in the vertical direction.
10. The tension roller changing device as described in claim 1, characterized in that, The transport mechanism has a limiting groove adapted to the tension measuring roller along the first path, and the limiting groove is used to limit the tension measuring roller.