Special tool for roller replacement of annealing kiln

Abstract

The utility model relates to the technical field of roller changing tools, in particular to a special tool for roller changing of an annealing kiln. The steel roller withdrawing device can quickly realize roller withdrawing operation on a steel roller and effectively support the steel roller, so that the bending deformation quantity of the steel roller is reduced while the operation efficiency is improved; comprising a steel roller, and the steel roller comprises a mandrel and a roller sleeve arranged on the mandrel in a sleeving mode; the device further comprises a supporting roller withdrawing mechanism used for detaching the roller sleeve from the mandrel, and the supporting roller withdrawing mechanism comprises a frame body, a supporting clamping mechanism installed on one side of the top of the frame body, a pulley installed on the frame body in a sliding mode, a jacking device installed on the pulley and a holding clamp installed on the jacking device. The supporting and clamping mechanism is used for supporting, clamping and limiting the end of the mandrel, the holding clamp is used for holding and clamping the outer wall of the roller sleeve, and a first driving cylinder used for driving the pulley to move is installed on the frame body.

Description

Technical Field

[0001] The utility model relates to the technical field of roller changing tools, in particular to a special tool for changing rollers of an annealing furnace. Background Art

[0002] As we all know, the thermal equipment used for annealing is called an annealing lehr. Its main structures include a tunnel-type kiln body, a trolley for carrying products, a roller or metal mesh conveyor belt, and an electric heating or combustion device. During use, the rollers in the annealing lehr are easily contaminated. To produce high-quality products, the steel rollers in the front area of the annealing lehr must be removed and cleaned. During normal production, the temperature in the front area of the annealing lehr is above 500°C, and each roller weighs approximately 700 kg. When replacing steel rollers in the annealing lehr at high temperatures, if the replacement operation takes a long time, the static steel rollers will sag and bend in the middle due to the high temperature and gravity. Furthermore, the operating space in the annealing lehr is limited, making it impossible to hoist the steel rollers, making steel roller replacement difficult. How to quickly replace steel rollers at high temperatures has become a difficult problem. Utility Model Content

[0003] In view of the deficiencies of the existing technology, the utility model provides a special tool for changing rolls in an annealing kiln, which can quickly realize the roll-retracting operation on the steel roll, effectively support the steel roll, improve the operating efficiency and reduce the bending deformation of the steel roll.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special tool for changing rollers in an annealing furnace, comprising a steel roller, the steel roller comprising a core shaft and a roller sleeve mounted on the core shaft; it also comprises a support and roll-back mechanism for detaching the roller sleeve from the core shaft, the support and roll-back mechanism comprising a frame, a support and clamping mechanism installed on one side of the top of the frame, a pulley slidably installed on the frame, a top supporter installed on the pulley, and a clamping clamp installed on the top supporter, the support and clamping mechanism is used for supporting and clamping the end of the core shaft, the clamping clamp is used for clamping and clamping the outer wall of the roller sleeve, and the frame is equipped with a first driving cylinder for driving the pulley to move; further, the frame is provided with a slide rail, the pulley is rotatably mounted with a roller, and the roller is slidably installed in the slide rail; the top supporter can adopt a lifting platform or other equivalent parts with lifting and lowering driving effect; the clamping clamp can adopt a mechanical clamp or other equivalent clamping parts with clamping and clamping effect.

[0005] Preferably, the supporting and clamping mechanism includes a supporting frame, a mounting frame fixedly mounted on the supporting frame, and a locking screw. The supporting frame is provided with a semicircular supporting portion that fits with the outer wall of the core shaft. The core shaft is placed in the semicircular supporting portion. The locking screw is screwed onto the mounting frame, and the end of the locking screw is in close contact with the outer wall of the core shaft. Further, the mounting frame includes two rod columns, a cross brace that is slidably mounted on the two rod columns, and a limit nut screwed onto the rod columns.

[0006] Preferably, the clamping clamp includes a U-shaped opening frame, two symmetrically arranged rotating shafts rotatably mounted on the U-shaped opening frame, clamping jaws fixedly mounted on the rotating shafts, a synchronous and unidirectional transmission rod and a driving assembly that drives one group of clamping jaws to open and close, and the synchronous and unidirectional transmission rod includes two driving handles and a connecting rod, and the two driving handles are fixedly mounted on the two rotating shafts, and the two ends of the connecting rod are respectively hinged to the central axis of the two driving handles away from the rotating shaft; the driving assembly includes an outer support frame fixedly connected to the U-shaped opening frame, a driving plate hingedly mounted on the outer support frame, a tension spring and a driving rod, one end of the driving rod is hinged to the driving plate, and the other end of the driving rod is hinged to the corresponding clamping jaw, and the driving plate is elastically connected to the outer support frame through a tension spring; further, the hinged connection between the connecting rod and the two driving handles is located on both sides of the horizontal end surface where the central axes of the two rotating shafts are located; one end of the tension spring is hinged to the outer support frame, and the other end of the tension spring is hinged to the driving plate.

[0007] Preferably, the support device includes a second driving cylinder, a support platform and two groups of parallel arranged support legs, one end of the support leg is hinged to the pulley, the other end of the support leg is hinged to the support platform, the upper end of the support leg is inclined away from the supporting clamping mechanism, one end of the second driving cylinder is hinged to the pulley, and one end of the second driving cylinder is hinged to the support platform; further, the inclination direction of the second driving cylinder is opposite to the inclination direction of the support leg.

[0008] Preferably, a V-shaped bracket is installed on the support platform.

[0009] Preferably, it also includes a scissor lift platform, and the frame is installed on the scissor lift platform.

[0010] Preferably, a trolley is further included, and the scissor lift platform is fixedly mounted on the trolley.

[0011] Compared with the prior art, the utility model provides a special tool for changing rollers in an annealing furnace, which has the following beneficial effects: the special tool for changing rollers in an annealing furnace places the end of the core shaft on the supporting clamping mechanism and clamps it to a limit position, while the top support supports the bottom of the roller sleeve and clamps the outer wall of the roller sleeve. By starting the first driving cylinder, the first driving cylinder drives the pulley to move, so that the roller sleeve is separated from the core shaft. In this process, the top support effectively supports the bottom of the roller sleeve, reduces the bending deformation of the roller sleeve during the roller changing process, can quickly realize the roller unwinding operation of the steel roller, and improves the operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an isometric perspective three-dimensional structural diagram of the present invention.

[0013] Figure 2 It is a front planar structural schematic diagram of the utility model.

[0014] Figure 3 This utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle.

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping clamp and the supporting platform of the utility model.

[0016] Markings in the accompanying drawings: 1. core shaft; 2. roller sleeve; 3. frame; 4. pulley; 5. first drive cylinder; 6. support frame; 7. mounting frame; 8. locking screw; 9. U-shaped opening frame; 10. rotating shaft; 11. clamping claw; 12. driving handle; 13. connecting rod; 14. outer support frame; 15. driving plate; 16. tension spring; 17. driving rod; 18. second drive cylinder; 19. supporting platform; 20. supporting leg; 21. V-shaped bracket; 22. scissors lift platform; 23. trolley. DETAILED DESCRIPTION

[0017] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0018] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0019] Please refer to Figure 1-3 The trolley 4 is mounted on the support frame 3 and the support frame 3 is provided with a roller sleeve 2, which is arranged on the support frame 3 and the support frame 3 is provided with a roller sleeve 2. The trolley 4 is mounted on the support frame 3 and the support frame 3 is provided with a roller sleeve 2. The trolley 4 is mounted on the support frame 3 and the support frame 3 is provided with a roller sleeve 2. The trolley 4 is mounted on the support frame 3 and the support frame 3 is provided with a roller sleeve 2. The trolley 4 is mounted on the support frame 3 and the support frame 3 is provided with a roller sleeve 2. The trolley 4 is mounted on the support frame 3 and the support frame 3 is provided with a roller sleeve 2. The trolley 4 is mounted on the support frame 3 and the support frame 3 is provided with a roller sleeve

[0020] The annealing lehr roller changing tool also includes a scissor lift 22 and a trolley 23. A frame 3 is mounted on the scissor lift 22. The scissor lift 22 drives the frame 3 up and down, facilitating easier movement of the tool from the bottom of the steel rollers. This allows for easier replacement of steel rollers at varying heights, enhancing the tool's applicability. The scissor lift 22 is fixedly mounted on the trolley 23, which facilitates easier and more labor-saving movement of the tool.

[0021] The supporting and clamping mechanism includes a supporting frame 6, a mounting frame 7 fixedly mounted on the supporting frame 6, and a locking screw 8. The supporting frame 6 is provided with a semicircular supporting portion that fits with the outer wall of the core shaft 1. The core shaft 1 is placed in the semicircular supporting portion, and the locking screw 8 is screwed on the mounting frame, and the end of the locking screw 8 is in close contact with the outer wall of the core shaft 1; further, the mounting frame 7 includes two studs, a cross brace that is slidably mounted on the two studs up and down, and a limiting nut screwed on the studs; the height of the cross brace can be adjusted up and down according to the size of the outer diameter of the core shaft 1 to meet the clamping requirements of core shafts 1 with multiple outer diameters; when the end of the core shaft 1 is placed toward the semicircular supporting portion, the cross brace can be detached.

[0022] The support device includes a second drive cylinder 18, a support platform 19 and two groups of parallel arranged support legs 20, one end of the support leg 20 is hinged to the pulley 4, and the other end of the support leg 20 is hinged to the support platform 19. The upper end of the support leg 20 is tilted away from the supporting clamping mechanism, one end of the second drive cylinder 18 is hinged to the pulley 4, and one end of the second drive cylinder 18 is hinged to the support platform 19; further, the tilting direction of the second drive cylinder 18 is opposite to the tilting direction of the support leg 20; by starting the second drive cylinder 18, the height of the support platform 19 can be adaptively adjusted to ensure that the support platform 19 is in close contact with the bottom of the roller sleeve 2 and that the clamping clamp can smoothly clamp the roller sleeve 2; and the upper part of the support leg 20 is tilted away from the supporting clamping mechanism, so that the support leg 20 transmits and consumes the thrust along the axis of the roller sleeve 2 during the roller sleeve 2 retraction operation, which is conducive to the smooth separation of the roller sleeve 2 from the core shaft 1.

[0023] Please refer to Figure 4The clamping pliers includes a U-shaped opening frame 9, two symmetrically arranged rotating shafts 10 rotatably mounted on the U-shaped opening frame 9, a clamping jaw 11 fixedly mounted on the rotating shaft 10, a synchronous and different-direction transmission rod and a driving assembly for driving one set of clamping jaws 11 to open and close. The synchronous and different-direction transmission rod includes two driving handles 12 and a connecting rod 13. The two driving handles 12 are respectively fixedly mounted on the two rotating shafts 10, and the two ends of the connecting rod 13 are respectively hinged to the central axis of the two driving handles 12 away from the rotating shaft 10; the driving assembly includes an outer support frame 14 fixedly connected to the U-shaped opening frame 9, and a hinged mounting on the outer support frame 14. The drive plate 15, the tension spring 16 and the drive rod 17, one end of the drive rod 17 is hinged to the drive plate 15, the other end of the drive rod 17 is hinged to the corresponding clamping claw 11, and the drive plate 15 is elastically connected to the outer support frame 14 through the tension spring 16; further, the hinged connection between the connecting rod 13 and the two driving handles 12 is located on both sides of the horizontal end surface where the central axis of the two rotating shafts 10 is located; one end of the tension spring 16 is hinged to the outer support frame 14, and the other end of the tension spring 16 is hinged to the drive plate 15; through the synchronous and unequal transmission rods, the two clamping claws 11 rotate synchronously in opposite directions to achieve synchronous clamping of the roller sleeve 2.

[0024] The end of the mandrel 1 is placed within the semicircular support portion of the support frame 6. By tightening the locking screw 8, the end of the mandrel 1 is clamped between the support frame 6 and the mounting frame 7, thereby achieving a fixed position for the end of the mandrel 1. The roller sleeve 2 enters through the opening of the U-shaped opening frame 9 and is located between the two clamping jaws 11. Under the action of the tension spring 16, the drive plate 15 drives the drive rod 17 to move, thereby tightly clamping the clamping jaws 11 to the outer diameter of the roller sleeve 2. When the pulley 4 moves away from the support and clamping mechanism, the clamping jaws 11 tightly engage with the roller sleeve 2. When the pulley 4 moves toward the support and clamping mechanism, the clamping jaws 11 disengage from the roller sleeve 2. This allows the roller sleeve 2 to be quickly withdrawn from the mandrel 1, improving roll changing efficiency.

[0025] A V-shaped bracket 21 is installed on the base 19; the V-shaped bracket 21 can effectively support the bottom of the roller sleeve 2 and prevent the roller sleeve 2 from rolling to the sides of the base 19, ensuring that the roller sleeve 2 is always on the same central axis as the core shaft 1 during the roll-back operation.

[0026] The use process of the special tool for changing rollers of an annealing furnace provided by the utility model is as follows: push the trolley 23 to the bottom of the steel roller to be changed, place the end of the core shaft 1 in the semicircular support part on the support frame 6, and tighten the locking screw 8 to fix the end of the core shaft 1 between the support frame 6 and the mounting frame 7; by starting the second driving cylinder 18, the support platform 19 moves up until the bottom of the roller sleeve 2 is in close contact with the V-shaped bracket 21, and the clamp clamps the outer wall of the roller sleeve 2; by starting the first driving cylinder 5, the first driving cylinder 5 drives the pulley 4 to move back and forth, and the clamp clamps and the outer wall of the roller sleeve 2 reciprocally clamps and disengages, thereby gradually separating the roller sleeve 2 from the core shaft 1.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

Claims

1. A special tool for changing rollers in an annealing furnace, comprising a steel roller, wherein the steel roller comprises a core shaft (1) and a roller sleeve (2) sleeved on the core shaft (1); characterized in that: It also includes a supporting roll-retracting mechanism for detaching the roller sleeve (2) from the core shaft (1); The supporting roller retraction mechanism comprises a frame (3), a supporting clamping mechanism installed on one side of the top of the frame (3), a pulley (4) slidably installed on the frame (3), a supporting device installed on the pulley (4), and a clamping clamp installed on the supporting device; The supporting and clamping mechanism is used for supporting and clamping the end of the core shaft (1), the clamping pliers are used for clamping the outer wall of the roller sleeve (2), and a first driving cylinder (5) for driving the pulley (4) to move is installed on the frame (3).

2. The special tool for changing rollers in an annealing furnace according to claim 1, characterized in that: The supporting and clamping mechanism comprises a supporting frame (6), a mounting frame (7) fixedly mounted on the supporting frame (6), and a locking screw (8); the supporting frame (6) is provided with a semicircular supporting portion that fits with the outer wall of the core shaft (1); the core shaft (1) is placed in the semicircular supporting portion; the locking screw (8) is screwed onto the mounting frame; the end of the locking screw (8) is in close contact with the outer wall of the core shaft (1).

3. The special tool for changing rollers in an annealing furnace according to claim 1, characterized in that: The clamping pliers comprises a U-shaped opening frame (9), two symmetrically arranged rotating shafts (10) rotatably mounted on the U-shaped opening frame (9), clamping jaws (11) fixedly mounted on the rotating shafts (10), synchronous and directional transmission rods, and a driving assembly for driving one set of the clamping jaws (11) to open and close; The synchronous, non-directional transmission rod comprises two driving handles (12) and a connecting rod (13), wherein the two driving handles (12) are respectively fixedly mounted on the two rotating shafts (10), and the two ends of the connecting rod (13) are respectively hinged to the central axis of the two driving handles (12) away from the rotating shaft (10); The driving assembly includes an outer support frame (14) fixedly connected to the U-shaped opening frame (9), a driving plate (15) hingedly mounted on the outer support frame (14), a tension spring (16) and a driving rod (17), one end of the driving rod (17) is hingedly connected to the driving plate (15), the other end of the driving rod (17) is hingedly connected to the corresponding clamping claw (11), and the driving plate (15) is elastically connected to the outer support frame (14) through the tension spring (16).

4. The special tool for changing rollers in an annealing furnace according to claim 1, characterized in that: The supporting device comprises a second driving cylinder (18), a support platform (19) and two groups of supporting legs (20) arranged in parallel, one end of the supporting leg (20) is hinged to the pulley (4), the other end of the supporting leg (20) is hinged to the support platform (19), the upper end of the supporting leg (20) is tilted away from the supporting clamping mechanism, one end of the second driving cylinder (18) is hinged to the pulley (4), and one end of the second driving cylinder (18) is hinged to the support platform (19).

5. The special tool for changing rollers in an annealing furnace according to claim 4, characterized in that: A V-shaped bracket (21) is mounted on the support platform (19).

6. The special tool for changing rollers in an annealing furnace according to claim 1, characterized in that: It also includes a scissor lift platform (22), and the frame (3) is installed on the scissor lift platform (22).

7. The special tool for changing rollers in an annealing furnace according to claim 6, characterized in that: It also includes a trolley (23), and the scissor lift (22) is fixedly mounted on the trolley (23).

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