Roller turning tool

Abstract

The utility model belongs to the technical field of roll rotation tool, disclose a roll rotation tool, aim at solving the problem that the existing tool rotation middle roll is easy to interfere with the grappling hook, cannot 360 degree rotation, lead to the problem that cannot check the roll surface and assembly quality comprehensively, the tool includes the joint frame, the crowbar, the ratchet box and the connecting elbow pipe etc. Compose, the joint frame sets up the middle roll axle head and prevents the drop, the crowbar and the connecting elbow pipe sleeve connection constitute the long force arm labor saving lever structure, and cooperate and use the ratchet box to realize one -way positive and negative rotation through the bidirectional ratchet wheel and the direction switching structure, avoid interference, it adopts aluminium alloy to make, light weight and deformation resistance, can use in the roll area, the roll changer, realize the middle roll 360 degree rotation, facilitate quality inspection, reduce the cost and the security risk, have high popularization value.

Description

Technical Field

[0001] This utility model relates to the field of rolling mill rotation tools, and specifically to a rolling mill rotation tool. Background Technology

[0002] As rolling mill operating speed increases and production efficiency continues to improve, the surface quality of the rolls directly affects the downgrading or scrapping of products. Traditional tools for rotating rolls can only rotate the work rolls, and the intermediate rolls cannot rotate 360 ​​degrees in all directions.

[0003] However, the existing tools interfere with the intermediate grab hook when they rotate at a certain angle, making it impossible to inspect the assembly quality and surface quality of the intermediate rolls offline. When the rolling mill is running at high speed, quality problems with the rolls may lead to catastrophic breakage, damage the rolling mill equipment, or even threaten the safety of personnel. Utility Model Content

[0004] The purpose of this invention is to provide a roll rotating tool, aiming to solve the aforementioned technical problems existing in the prior art. To achieve the above objectives, the present invention adopts the following technical solution: A roll rotating tool includes a pry bar and a snap-fit ​​frame. One side of the snap-fit ​​frame is snapped into one end of a roll of a rolling mill, and the other end of the snap-fit ​​frame is fixedly connected to a mounting plate. The surface of the mounting plate is fixedly installed to one side of a ratchet box. The one-way rotating end of the ratchet box is inserted into one end of a connecting bend pipe, and its other end is inserted into the pry bar. The ratchet box is equipped with a bidirectional ratchet, a pawl assembly on one side, and a direction-changing switching structure on the top. The pawl assembly has two sets of ratchet blocks. The bidirectional ratchet is driven by the direction-changing switching structure to change its vertical position in the ratchet box and engage with the two ratchet blocks respectively, so as to realize the unidirectional rotation of the connecting bend pipe in either the forward or reverse direction.

[0005] In one embodiment of the present invention, the ratchet box includes a box body, and the top of the box body and the top of the box body are respectively fastened to end cap one and end cap two by bolts. The bidirectional ratchet is disposed in the middle of the box body, and the reversing switching structure is fixedly installed on one side of the box body.

[0006] In one embodiment of this utility model, the reversing switching structure includes a drive sleeve, a threaded hole is provided in the middle of the end cover, the drive sleeve is threadedly connected to the threaded hole, the bottom part of the drive sleeve extends into the interior of the end cover, a lever is fixedly installed on the top of one side of the drive sleeve, and a positioning structure is provided between the bottom surface of the lever and the top surface of the end cover.

[0007] In one embodiment of this utility model, the bidirectional ratchet includes a bit sleeve. A reverse ratchet and a forward ratchet are coaxially fixedly installed on the bottom of the bit sleeve from bottom to top. The top of the bit sleeve is movably connected to the inside of the drive sleeve, and its top surface is not lower than the top surface of the drive sleeve. A bit is provided at one end of the connecting bend, and the connecting bend is inserted into the bit sleeve through the bit.

[0008] In one embodiment of this utility model, a fixing post is provided in the middle of the top surface of the second end cap, and a reversing spring is sleeved on the outside of the fixing post. One end of the reversing spring is fixedly connected to the second end cap, the top of the fixing post is movably connected to the inside of the bit sleeve, and the other end of the reversing spring abuts against the bottom surface of the anti-ratchet.

[0009] In one embodiment of this utility model, the ratchet assembly further includes a sliding cylinder and a sliding rod. One end of the sliding cylinder extends into the housing and is fixedly installed therewith. The sliding rod is located inside the housing, with one end slidably connected to the inside of one end of the sliding cylinder and the other end fixedly connected to a fixing plate. Two ratchet blocks are respectively fixedly connected to diagonal positions on one side of the fixing plate. When the positive ratchet engages with one of the corresponding ratchet blocks, the negative ratchet does not engage with the other corresponding ratchet block. The other end of the sliding cylinder is threadedly connected to a cap. The middle of one circular surface of the cap is fixedly installed with one end of a reaction spring. The reaction spring is located inside the sliding cylinder, and its other end abuts against one cross-section of the sliding rod.

[0010] In one embodiment of this utility model, the positioning structure includes a spring positioning bead, which is fixedly installed at the bottom of the lever. Two positioning grooves are formed on the top surface of the end cover. The spring positioning bead is engaged with the two positioning grooves respectively by the lever rotating with the drive sleeve.

[0011] The beneficial effects of this utility model are: 1. Effectively solves the interference problem between the intermediate roller and the gripper hook when the existing tool rotates. Through the "ratchet box bidirectional ratchet reversal" structure, the intermediate roller can rotate 360 ​​degrees in all directions, breaking through the rotation limitations of traditional tools.

[0012] 2. Supports comprehensive offline inspection of the surface quality and assembly quality of intermediate rolls to avoid catastrophic breakage during high-speed operation due to hidden quality problems of the rolls, reduce the risk of equipment damage, and ensure the safety of operators.

[0013] 3. Made of hard aluminum alloy material, it combines lightweight and impact resistance, reduces the labor intensity of operators, and has low manufacturing cost, making it easy to produce and promote.

[0014] It has a wide range of applications and can be used in different scenarios such as the roll preparation area and roll changing car. It is also compatible with intermediate rolls and work rolls, making it highly versatile and enhancing the practical value of the tool. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the three-dimensional structure of the snap-fit ​​frame; Figure 3 This is a three-dimensional exploded view of the ratchet box. Figure 4 This is a three-dimensional structural diagram of a two-way ratchet.

[0016] Reference numerals: 1. Pry bar; 2. Snap-fit ​​frame; 21. Mounting plate; 3. Ratchet box; 31. Threaded hole; 32. End cap one; 321. Positioning groove; 33. Bidirectional ratchet; 331. Bit sleeve; 332. Positive ratchet; 333. Negative ratchet; 34. Box body; 35. End cap two; 351. Fixing post; 352. Reversing spring; 4. Reversing switching structure; 41. Pulley block; 42. Drive sleeve; 43. Spring positioning bead; 5. Connecting bend; 6. Pawl assembly; 61. Racket block; 62. Fixing plate; 63. Sliding rod; 64. Sliding cylinder; 65. Reaction spring; 66. Cover. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is 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. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0018] Example: like Figure 1-4 As shown, this embodiment provides a roll rotation tool, including a pry bar 1 and a snap-fit ​​frame 2. One side of the snap-fit ​​frame 2 is snapped into one end of the roll of the rolling mill, and the other end of the snap-fit ​​frame 2 is fixedly connected to a mounting plate 21. The surface of the mounting plate 21 is fixedly installed with one side of the ratchet box 3. The one-way rotating end of the ratchet box 3 is inserted into one end of the connecting bend pipe 5, and its other end is inserted into the pry bar 1. The ratchet box 3 is equipped with a bidirectional ratchet 33, a pawl assembly 6 on one side, and a direction-changing structure 4 on the top. The pawl assembly 6 is equipped with two sets of ratchet blocks 61. The bidirectional ratchet 33 is driven by the direction-changing structure 4 to change its position in the ratchet box 3 and engage with the two ratchet blocks 61 respectively, so as to realize the unidirectional rotation of the connecting bend 5 in either the forward or reverse direction.

[0019] In one embodiment of the present invention, the ratchet box 3 further includes a box body 34, and the top of the box body 34 is fastened with an end cap 32 and an end cap 35 by bolts. A bidirectional ratchet 33 is disposed in the middle of the box body 34, and a reversing switching structure 4 is fixedly installed on one side of the box body 34.

[0020] Specifically, such as Figure 1-2 As shown, after the snap-fit ​​frame 2 is securely snapped to the end of the intermediate roller, the connecting bend 5 is moved by pressing down the pry bar 1, thereby transferring force to the bidirectional ratchet 33. The bidirectional ratchet 33, by engaging with the pawl assembly 6, hinders the rotation of the bidirectional ratchet 33, causing the ratchet box 3 to rotate as a whole. This, in turn, drives the snap-fit ​​frame 2, which is fixedly installed thereto, to rotate the intermediate roller angle. When the pry bar 1 is interfered with by the hook, by lifting the pry bar 1 to reset it, due to the characteristics of the ratchet box, the intermediate roller will not rotate at this time. After the pry bar 1 is reset, it is pressed down again to continue rotating the intermediate roller in the same direction, thereby achieving its 360° rotation. When it is necessary to rotate the intermediate roller in the opposite direction, by adjusting the direction-changing switching structure 4, the meshing structure between the bidirectional ratchet 33 and the pawl assembly 6 is changed, so that the bidirectional ratchet 33 can only rotate in the opposite direction of the previous operation. The above-mentioned rotation is achieved by lifting the pry bar 1 (and by pressing the pry bar 1 down after switching), thereby realizing the reverse rotation of the intermediate roller; With the above-described structure, the operator only needs to rock the lever 1 up and down to rotate the intermediate roller in both directions, eliminating the need for frequent tool assembly, disassembly, and adjustment of the lever angle as with existing tools. This improves the efficiency of inspecting the surface quality of the intermediate roller and reduces the labor intensity of the operator.

[0021] In one embodiment of this utility model, the direction switching structure 4 further includes a drive sleeve 42, a threaded hole 31 is provided in the middle of the end cover 32, the drive sleeve 42 is threadedly connected to the threaded hole 31, the bottom of the drive sleeve 42 extends into the end cover 32, a lever 41 is fixedly installed on the top of one side of the drive sleeve 42, and a positioning structure is provided between the bottom surface of the lever 41 and the top surface of the end cover 32.

[0022] In one embodiment of this utility model, the bidirectional ratchet 33 further includes a bit sleeve 331. The bottom of the bit sleeve 331 is coaxially fixedly mounted with a reverse ratchet 333 and a forward ratchet 332 from bottom to top. The top of the bit sleeve 331 is movably connected to the inside of the drive sleeve 42, and its top surface is not lower than the top surface of the drive sleeve 42. A bit is provided at one end of the connecting bend 5, and the connecting bend 5 is inserted into the bit sleeve 331 through the bit.

[0023] In one embodiment of this utility model, a fixing post 351 is further provided in the middle of the top surface of the second end cover 35, and a reversing spring 352 is sleeved on the outside of the fixing post 351. One end of the reversing spring 352 is fixedly connected to the second end cover 35, the top of the fixing post 351 is movably connected to the inside of the bit sleeve 331, and the other end of the reversing spring 352 abuts against the bottom surface of the anti-ratchet 333.

[0024] In one embodiment of this utility model, the pawl assembly 6 further includes a sliding cylinder 64 and a sliding rod 63. One end of the sliding cylinder 64 extends into the housing 34 and is fixedly installed therein. The sliding rod 63 is located inside the housing 34, with one end slidably connected to the inside of one end of the sliding cylinder 64 and the other end fixedly connected to a fixing plate 62. Two ratchet blocks 61 are respectively fixedly connected to opposite positions on one side of the fixing plate 62. When the positive ratchet 332 engages with the corresponding ratchet block 61, the negative ratchet 333 does not engage with the corresponding other ratchet block 61. The other end of the sliding cylinder 64 is threadedly connected to a cap 66. The middle part of one side of the cap 66 is fixedly installed with one end of a reaction spring 65. The reaction spring 65 is located inside the sliding cylinder 64, and its other end abuts against one side of the sliding rod 63.

[0025] In one embodiment of this utility model, the positioning structure further includes a spring positioning bead 43, which is fixedly installed on the bottom of the lever 41. Two positioning grooves 321 are opened on the top surface of the end cover 32. The spring positioning bead 43 is engaged with the two positioning grooves 321 respectively by the lever 41 rotating with the drive sleeve 42.

[0026] Specifically, such as Figure 3-4 As shown, in order to realize the function of unidirectional rotation of the ratchet box 3, the top of the bit sleeve 331 of the bidirectional ratchet 33 is inserted into the drive sleeve 42 of the direction switching structure 4 with a certain gap, and its top is extended to facilitate the insertion of the bit of the connecting bend tube 5. The bottom of the bit sleeve 331 is sleeved on the outside of the fixed post 351, so that the bidirectional ratchet 33 can both rotate and move up and down. The bidirectional ratchet 33 is lifted from below by the reversing spring 352 fixed to the top surface of the end cover 35, so that the positive ratchet 332 engages with the ratchet block 61 at one corner of the upper part of the fixed plate 62, thereby realizing the unidirectional rotation of the positive ratchet 332. By the operator moving the lever 41, the drive sleeve 42 is driven to retract into the ratchet box, thereby dragging the bidirectional ratchet 33 closer to the end cover 35, so that the ratchet block 61 at the upper part of the fixed plate 62 gradually disengages from the positive ratchet 332, and at the same time, the ratchet block 61 at the other corner of the lower part of the fixed plate 62 gradually engages with the reverse ratchet 333. After adjustment, the lever 41 is engaged with a corresponding positioning groove 321 through the spring positioning bead 43, thereby realizing the positioning of the drive cylinder. At this point, the ratchet box's one-way rotation has been switched to the opposite direction. When the gearbox is driven to rotate by lever 1, the center rotates 360° in the opposite direction to the previous operation.

[0027] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A roll rotating tool, comprising a pry bar (1) and a locking frame (2), wherein one side of the locking frame (2) is locked to one end of a roll of a rolling mill, characterized in that, The other end of the snap-fit ​​frame (2) is fixedly connected to the mounting plate (21). The surface of the mounting plate (21) is fixedly installed on one side of the ratchet box (3). The one-way rotating end of the ratchet box (3) is inserted into one end of the connecting bend (5), and its other end is inserted into the pry bar (1). The ratchet box (3) is equipped with a bidirectional ratchet (33), a pawl assembly (6) is provided on one side, and a direction-changing switching structure (4) is provided on the top. The pawl assembly (6) is equipped with two sets of ratchet blocks (61). The bidirectional ratchet (33) is driven by the direction-changing switching structure (4) to change its position in the ratchet box (3) and engage with the two ratchet blocks (61) respectively, so as to realize the unidirectional rotation of the connecting bend (5) in either the forward or reverse direction.

2. The roll rotating tool according to claim 1, characterized in that, The ratchet box (3) includes a box body (34), and the top of the box body (34) is fastened with end cap one (32) and end cap two (35) by bolts. The bidirectional ratchet (33) is located in the middle of the box body (34), and the direction switching structure (4) is fixedly installed on one side of the box body (34).

3. The roll rotating tool according to claim 2, characterized in that, The reversing switching structure (4) includes a drive sleeve (42), and a threaded hole (31) is provided in the middle of the end cover (32). The drive sleeve (42) is threadedly connected to the threaded hole (31). The bottom part of the drive sleeve (42) extends into the end cover (32). A lever (41) is fixedly installed on the top of one side of the drive sleeve (42). A positioning structure is provided between the bottom surface of the lever (41) and the top surface of the end cover (32).

4. The roll rotating tool according to claim 3, characterized in that, The bidirectional ratchet (33) includes a bit sleeve (331). The bottom of the bit sleeve (331) is coaxially fixed with a reverse ratchet (333) and a forward ratchet (332) from bottom to top. The top of the bit sleeve (331) is movably connected to the inside of the drive sleeve (42), and its top surface is not lower than the top surface of the drive sleeve (42). One end of the connecting bend (5) is provided with a bit, and the connecting bend (5) is inserted into the bit sleeve (331) through the bit.

5. The roll rotating tool according to claim 4, characterized in that, A fixing post (351) is provided in the middle of the top surface of the end cap 2 (35). A reversing spring (352) is sleeved on the outside of the fixing post (351). One end of the reversing spring (352) is fixedly connected to the end cap 2 (35). The top of the fixing post (351) is movably connected to the inside of the bit sleeve (331). The other end of the reversing spring (352) abuts against the bottom surface of the anti-ratchet (333).

6. The roll rotating tool according to claim 4, characterized in that, The pawl assembly (6) further includes a sliding cylinder (64) and a sliding rod (63). One end of the sliding cylinder (64) extends into the housing (34) and is fixedly installed therein. The sliding rod (63) is located inside the housing (34), with one end slidably connected to the inside of one end of the sliding cylinder (64) and the other end fixedly connected to a fixing plate (62). Two ratchet blocks (61) are respectively fixedly connected to the diagonal positions on one side of the fixing plate (62). When the positive ratchet (332) engages with one of the corresponding ratchet blocks (61), the negative ratchet (333) does not engage with the other corresponding ratchet block (61). The other end of the sliding cylinder (64) is threadedly connected to a cap (66). The middle part of one side of the cap (66) is fixedly installed with one end of a reaction spring (65). The reaction spring (65) is located inside the sliding cylinder (64), and its other end abuts against one side of the sliding rod (63).

7. The roll rotating tool according to claim 3, characterized in that, The positioning structure includes a spring positioning bead (43), which is fixedly installed at the bottom of the lever (41). The top surface of the end cover (32) has two positioning grooves (321). The spring positioning bead (43) is engaged with the two positioning grooves (321) respectively by the lever (41) rotating with the drive sleeve (42).

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