Squeezing roller replacing device of continuous hot galvanizing unit

Abstract

The invention provides a wringing roller replacing device of a continuous hot galvanizing unit, which comprises a moving mechanism capable of axially reciprocating along a wringing roller of the continuous hot galvanizing unit; the lifting mechanism comprises an upper frame, a lower frame and a lifting structure, the lower frame is arranged at the top of the moving mechanism and can move in a reciprocating mode in the horizontal direction perpendicular to the axial direction of the wringing roller, and the upper frame is arranged at the top of the lower frame; the end, close to the wringing roller, of the upper frame is provided with a roller clamping piece used for clamping the wringing roller, the lifting structure is connected between the lower frame and the upper frame, and the lifting structure is used for driving the upper frame to move in the vertical direction. Therefore, the axis of the roll clamping piece is aligned with the wringing roll and can be connected with the wringing roll to carry out extraction operation, and the problem that the wringing roll is low in stability and efficiency in roll replacement is solved.

Description

Technical Field

[0001] The invention relates to the technical field of rolling equipment, and in particular to a squeeze roll changing device for a continuous hot-dip galvanizing unit. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] In the field of rolling equipment technology, squeeze rollers are mainly used to reduce the residual cleaning liquid on the surface of the strip. The liquid on the surface of the strip is squeezed out by squeezing, thereby reducing the loss of liquid and improving production efficiency and product quality. In the continuous hot-dip galvanizing unit, squeeze rollers are mainly arranged in the cleaning section, after skin-passing and after water quenching. Among them, there are multiple groups (more than 10 groups) of cleaning sections, and two groups of squeeze rollers after skin-passing and water quenching. After skin-passing, the squeeze rollers are arranged horizontally along the steel line. Each group has two squeeze rollers on the upper and lower sides. The steel strip is clamped during operation and separated from the upper and lower sides during disassembly; the water quenching squeeze rollers are arranged vertically along the steel line. Each group has two squeeze rollers on the left and right sides. The steel strip is clamped during operation and separated from the left and right sides during disassembly. During the continuous production process, the rubber lining on the surface of the squeeze roller may be worn, scratched, debonded, etc. In order to ensure the surface quality of the strip, the squeeze roller needs to be replaced regularly. For easy replacement, the squeeze roller body and the bearing seats on both sides are generally replaced as a whole.

[0004] In view of the above problems, in the technical means of replacing the roller body of the squeeze roller and the bearing seats on both sides, a counterweight type roller changing device is often used. The counterweight type roller changing device requires the unit to be shut down and the steel belt to be cut, and then the roller changing device is suspended by a crane through the clamping roller neck, while the roller is moved and the counterweight position is adjusted to achieve the roller in and out of the squeeze roller frame. However, the roller changing work in the above manner is heavy and time-consuming. The stability of the roller is poor during the roller changing process. Moreover, it is an aerial operation, and the hoisting device requires a heavier counterweight for balance, which is dangerous to the operator and the on-site workers. In addition, the entire roller changing process requires the cooperation of the workshop crane, and the roller changing efficiency is relatively low. There is also a roller changing scheme using a squeeze roller manual roller changing trolley device, which uses manual labor to pull out the roller and place it on the upper and lower platforms of the squeeze roller manual roller changing trolley device. The main structure of the mobile trolley is carbon steel, with two universal casters and two fixed casters at the bottom. The upper part is made of high and low rollers, which solves the need to replace the upper and lower squeezing rollers. However, the bottom uses universal casters, and it is not easy for workers to control the direction when pushing the trolley. The safety and maneuverability of the trolley are poor, and it is not easy for workers to control the direction when pushing the trolley.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0006] The purpose of the invention is to provide a squeeze roller changing device for a continuous hot-dip galvanizing unit, which solves the problems of stability of squeeze roller changing and low roller changing efficiency.

[0007] The above-mentioned implementation objectives of the present invention are mainly achieved by the following technical solutions:

[0008] The present invention provides a squeeze roller changing device for a continuous hot-dip galvanizing unit, comprising:

[0009] A moving mechanism, wherein the moving mechanism can reciprocate along the axial direction of the squeeze roller of the continuous hot-dip galvanizing unit;

[0010] A lifting mechanism, the lifting mechanism includes an upper frame, a lower frame, and a lifting structure, the lower frame is arranged on the top of the moving mechanism and can reciprocate in a horizontal direction perpendicular to the axial direction of the squeezing roller, the upper frame is arranged on the top of the lower frame, and the end of the upper frame close to the squeezing roller is provided with a clamping roller member for clamping the squeezing roller, the lifting structure is connected between the lower frame and the upper frame, and the lifting structure is used to drive the upper frame to move in the vertical direction so that the axis of the clamping roller member is aligned with the squeezing roller and can be connected to the squeezing roller for extraction operation.

[0011] In a specific embodiment,

[0012] The lifting structure comprises a first supporting arm and a second supporting arm arranged crosswise, a lower moving member moving along the lower frame and an upper moving member moving along the upper frame;

[0013] The first support arm and the second support arm are hinged at the intersection position through a hinge structure;

[0014] One end of the first support arm is hinged to the upper frame, and the other end of the first support arm is hinged to the lower moving member;

[0015] One end of the second supporting arm is hinged to the lower frame, and the other end of the second supporting arm is hinged to the upper moving member.

[0016] In a specific embodiment,

[0017] The first support arm is hinged to one end of the upper frame close to the squeezing roller, and the second support arm is hinged to one end of the lower frame close to the squeezing roller.

[0018] In a specific embodiment,

[0019] There are two lifting structures, and the two lifting structures are respectively connected between the lower frame and the upper frame, wherein the first support arms of the two lifting structures are hinged to the same end of the upper frame, and the second support arms of the two lifting structures are hinged to the same end of the lower frame.

[0020] In a specific embodiment,

[0021] The lifting structure also includes a connecting arm and a lifting cylinder. The connecting arm is arranged between the second support arms of the two lifting structures. The two ends of the connecting arm are respectively connected to the two second support arms. The cylinder body of the lifting cylinder is hinged to the lower frame, and the cylinder rod of the lifting cylinder is hinged to the connecting arm.

[0022] In a specific embodiment,

[0023] The connecting arm is arranged horizontally, and the connection position between the connecting arm and the second supporting arm is arranged near the end where the second supporting arm is hinged to the upper frame, and the cylinder body of the lifting cylinder is hinged to the end of the lower frame away from the squeezing roller.

[0024] In a specific embodiment,

[0025] The lifting mechanism also includes a first track and a first wheel group. The first track extends in a horizontal direction perpendicular to the axial direction of the squeezing roller. The first track is arranged on the top surface of the moving mechanism. The first wheel group is arranged on the bottom of the lower frame. The lower frame can reciprocate along the first track through the first wheel group.

[0026] In a specific embodiment,

[0027] The squeeze roller changing device of the continuous hot-dip galvanizing unit also includes:

[0028] A second track and a second wheel set, wherein the second track is arranged on the ground and extends along the axial direction of the squeeze roller, and the second wheel set is arranged at the bottom of the moving mechanism, and the moving mechanism can reciprocate along the second track through the second wheel set.

[0029] In a specific embodiment,

[0030] The first track has a first track upper edge and a first track bottom surface, and the first wheel set is movably engaged between the first track upper edge and the first track bottom surface to limit the movement of the first wheel set in the vertical direction;

[0031] The second track has a second track upper edge and a second track bottom surface, and the second wheel set is movably engaged between the second track upper edge and the second track bottom surface to limit the movement of the second wheel set in the vertical direction.

[0032] In a specific embodiment,

[0033] The squeeze roller changing device of the continuous hot-dip galvanizing unit also includes:

[0034] A plurality of track stoppers, wherein the plurality of track stoppers are respectively arranged at the bottom of the lower frame and the bottom of the moving mechanism, and the track stoppers have a stopper that can move downward and abut against the upper edge of the first track or the upper edge of the second track,

[0035] Among them, when the limiter of the track limiter provided on the lower frame moves downward and abuts against the upper edge of the first track, the track limiter can limit the movement of the lower frame along the first track; when the limiter of the track limiter provided on the moving mechanism moves downward and abuts against the upper edge of the second track, the track limiter can limit the movement of the moving mechanism along the second track.

[0036] Compared with the prior art, the technical solution of the present invention has the following characteristics and advantages:

[0037] The squeeze roller changing device of the continuous hot-dip galvanizing unit provided by the present invention can be used to replace squeeze rollers of different types and different equipment, is not affected by the actual layout of the squeeze rollers in different equipment, can realize fast roller changing, can adapt to the fast-paced production process requirements of the continuous hot-dip galvanizing unit, and greatly improves the production efficiency of squeeze rollers after finishing, squeeze rollers of the straightening machine, and water-quenched squeeze rollers; at the same time, the squeeze roller changing device of the continuous hot-dip galvanizing unit provided by the present invention does not require the cooperation of the workshop overhead crane and the crane during the roller changing process, greatly improves the roller changing efficiency, and the roller changing operation has a high degree of freedom; the squeeze roller changing device of the continuous hot-dip galvanizing unit provided by the present invention can move back and forth in a fixed direction, and compared with the universal wheel structure, the safety and controllability of the movement of the squeeze roller changing device are improved; further, the squeeze roller changing device of the continuous hot-dip galvanizing unit provided by the present invention can also be used for the replacement of squeeze rollers of different heights, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is the structural diagram of the cleaning section;

[0039] Figure 2 This is the structural diagram of the water quenching and squeezing section of the continuous hot-dip galvanizing unit;

[0040] Figure 3 It is the structural diagram of the post-skinning squeeze section and the tension and leveling squeeze section of the continuous hot-dip galvanizing unit;

[0041] Figure 4 It is a structural diagram of the squeeze roller changing device of the continuous hot-dip galvanizing unit of the present invention after lifting;

[0042] Figure 5 It is a structural diagram of the squeeze roller changing device of the continuous hot-dip galvanizing unit of the present invention before it is lifted;

[0043] Figure 6 It is a front cross-sectional view of a squeeze roll changing device of a continuous hot-dip galvanizing unit of the present invention;

[0044] Figure 7 for Figure 6 A partial enlarged view of the D position in the middle;

[0045] Figure 8 It is a top view of the squeeze roller changing device of the continuous hot-dip galvanizing unit of the present invention.

[0046] Description of Figure Numbers:

[0047] 100. Mobile mechanism;

[0048] 200. Lifting mechanism;

[0049] 210, upper frame; 220, lower frame;

[0050] 230. Lifting structure;

[0051] 231, first supporting arm; 232, second supporting arm; 233, lower moving member; 234, upper moving member;

[0052] 235, connecting arm;

[0053] 236, lifting cylinder; 2361, cylinder body; 2362, cylinder rod;

[0054] 237, first track; 2371, upper edge of the first track; 2372, bottom surface of the first track;

[0055] 238, first round group;

[0056] 239. Articulated structure;

[0057] 300, continuous hot-dip galvanizing unit; 310, squeeze roller;

[0058] 400, clamping roller;

[0059] 510, second track; 511, upper edge of the second track; 512, bottom surface of the second track;

[0060] 520, second wheel group;

[0061] 600, track limiter; 610, limiter;

[0062] 700, handle;

[0063] A. The axial direction of the squeeze roller. DETAILED DESCRIPTION

[0064] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments 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 creative work should fall within the scope of protection of the present invention.

[0065] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0067] like Figures 4 to 8 As shown, the present invention provides a roller replacement device for a squeeze roller 310 of a continuous hot-dip galvanizing unit 300, comprising:

[0068] A moving mechanism 100, which can reciprocate along the axial direction A of the squeezing roller 310 of the continuous hot-dip galvanizing unit 300;

[0069] The lifting mechanism 200 includes an upper frame 210, a lower frame 220, and a lifting structure 230. The lower frame 220 is arranged at the top of the moving mechanism 100 and can reciprocate in a horizontal direction perpendicular to the axial direction of the squeezing roller 310. The upper frame 210 is arranged at the top of the lower frame 220. The end of the upper frame 210 close to the squeezing roller 310 is provided with a clamping roller member 400 for clamping the squeezing roller 310. The lifting structure 230 is connected between the lower frame 220 and the upper frame 210. The lifting structure 230 is used to drive the upper frame 210 to move in the vertical direction so that the axis of the clamping roller member 400 is aligned with the squeezing roller 310 and can be connected to the squeezing roller 310 for extraction operations.

[0070] The roller replacement device for the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided by the present invention can be suitable for replacing the squeeze rollers 310 of different types and different equipments, and is not affected by the actual layout of the squeeze rollers 310 in different equipments, and can realize fast roller replacement, and can adapt to the fast-paced production process requirements of the continuous hot-dip galvanizing unit 300. Figures 1 to 3 As shown, the production efficiency of the squeeze roller after finishing, the squeeze roller of the straightening machine, and the water-quenched squeeze roller is greatly improved; at the same time, the squeeze roller 310 roller changing device of the continuous hot-dip galvanizing unit 300 provided by the present invention does not require the cooperation of the workshop overhead crane and the crane during the roller changing process, which greatly improves the roller changing efficiency and has a high degree of freedom in the roller changing operation; the squeeze roller 310 roller changing device of the continuous hot-dip galvanizing unit 300 provided by the present invention can move back and forth in a fixed direction, and compared with the universal wheel structure, the safety and controllability of the movement of the squeeze roller 310 roller changing device are improved; further, the squeeze roller 310 roller changing device of the continuous hot-dip galvanizing unit 300 provided by the present invention can also be used for the replacement of squeeze rollers 310 of different heights, and has strong applicability.

[0071] Specifically in this embodiment, the moving mechanism 100 is generally a movable platform structure with a top platform. In a specific embodiment, the moving mechanism 100 reciprocates along the axial direction A of the squeezing roller 310 in the form of a track. In other embodiments, other forms without steering rollers can also be used to achieve the reciprocating movement of the moving mechanism 100 along the fixed direction of the axial direction A of the squeezing roller 310. There is no specific restriction on the movement form of the moving mechanism 100. In this embodiment, the moving mechanism 100 can drive the lifting mechanism 200 located at the upper part of the moving mechanism 100 to move toward the direction of the squeezing roller 310 to be replaced, so as to achieve the approach along the axial direction A of the squeezing roller 310. In this embodiment, a handle 700 is provided at one end of the top platform of the moving mechanism 100 away from the squeezing roller 310, which can be used by the operator to pull the moving mechanism 100 to move. The top platform of the moving mechanism 100 can also be used to place a hydraulic station.

[0072] In this embodiment, the lower frame 220 of the lifting mechanism 200 is movably disposed on the top platform of the moving mechanism 100, and the lower frame 220 can reciprocate in a horizontal direction perpendicular to the axial direction of the squeezing roller 310. In a specific embodiment, the lower frame 220 reciprocates along the top platform of the moving mechanism 100 in the form of a track. In other embodiments, other forms without steering rollers can be used to achieve the reciprocating movement of the lower frame 220 in a horizontal direction perpendicular to the axial direction of the squeezing roller 310. There is no specific restriction on the movement form of the lower frame 220.

[0073] In the present embodiment, the lower frame 220 is a generally cubical frame. In other embodiments, the lower frame 220 may also be a structure of other shapes, and there is no specific limitation on this. In the present embodiment, the bottom of the lower frame 220 is movably connected to the moving mechanism 100, and the upper frame 210 is disposed on the top of the lower frame 220. The upper frame 210 and the lower frame 220 are connected by a lifting structure 230. In the present embodiment, the upper frame 210 is a generally cubical platform structure. In other embodiments, there is no limitation on the specific structural form of the upper frame 210.

[0074] In this embodiment, a clamping roller member 400 is provided at one end of the upper frame 210 close to the squeezing roller 310. The clamping roller member 400 generally has a clamping device capable of clamping the squeezing roller 310. When the axis of the clamping device is in the same straight line as the axis of the squeezing roller 310, one end of the squeezing roller 310 can be clamped by the clamping roller member 400, and the squeezing roller 310 can be moved away from the continuous hot-dip galvanizing unit 300 by the moving mechanism 100, thereby extracting the squeezing roller 310 from the equipment, thereby completing the extraction operation of the squeezing roller 310.

[0075] In this embodiment, the lifting structure 230 can push the upper frame 210 to move upward relative to the top of the lower frame 220. In a specific embodiment, the lifting structure 230 is a cross-arm lifting structure. In other embodiments, the selection of the lifting structure 230 is limited to the lifting structure 230 that can stably lift the upper frame 210 and can still maintain a stable posture after extracting and receiving the squeezing roller 310.

[0076] It should be noted that the specific steps of using the roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 in this embodiment are as follows:

[0077] Step S1: When the replacement work starts, the moving mechanism 100 moves from the waiting position along the axial direction A of the squeezing roller 310 of the continuous hot-dip galvanizing unit 300 to a position close to the squeezing roller 310;

[0078] Step S2: the lower frame 220 moves in a horizontal direction perpendicular to the axial direction of the squeezing roller 310 , so that the axis of the pinch roller 400 installed on the upper frame 210 moves to be in the same vertical plane as the axis of the squeezing roller 310 ;

[0079] Step S3: the lifting structure 230 pushes the upper frame 210 to move upward in the vertical direction, so that the axis of the clamping roller 400 and the axis of the squeezing roller 310 are in the same straight line;

[0080] Step S4: the moving mechanism 100 continues to move along the axial direction A of the squeezing roller 310 toward the squeezing roller 310 until the clamping roller 400 sleeves one end of the squeezing roller 310, and then the connection between the clamping roller 400 and the squeezing roller 310 is changed to a fixed connection;

[0081] Step S5: the moving mechanism 100 moves along the axial direction A of the squeeze roller 310 in a direction away from the continuous hot-dip galvanizing unit 300 to perform an extraction operation until the squeeze roller 310 is completely extracted from the equipment of the continuous hot-dip galvanizing unit 300;

[0082] Step S6: The lifting structure 230 drives the upper frame 210 to move downward in the vertical direction to a height that is convenient for the operator to operate, and separates the squeeze roller 310 from the clamping roller member 400 to complete the extraction operation;

[0083] Step S7: Select a new squeeze roller 310, and fix the new squeeze roller 310 to the clamping roller 400, so that the axis of the new squeeze roller 310 and the axis of the clamping roller 400 are located on the same straight line;

[0084] Step S8: the lifting structure 230 pushes the upper frame 210 to move upward in the vertical direction, so that the axis of the new squeeze roller 310 and the axis of the bearing seat are in the same straight line;

[0085] Step S9: The moving mechanism 100 continues to move along the axial direction A of the squeeze roller 310 toward the hot-dip galvanizing unit until the new squeeze roller 310 is inserted into the bearing seat, and then the new squeeze roller 310 is separated from the clamping roller member 400. After completing this step, the moving mechanism 100 moves along the axial direction A of the squeeze roller 310 toward the direction away from the continuous hot-dip galvanizing unit 300 to the waiting position, waiting for the next replacement.

[0086] It is understandable that the connection between the squeeze roller 310 and the clamping roller member 400 can be detachably fastened by means of positioning bolts. In other embodiments, other connection methods can also be used.

[0087] It is also understandable that the order of operations in step S2 and step S3 can also be swapped, as follows:

[0088] Step S21: the lifting structure 230 pushes the upper frame 210 to move upward in the vertical direction, so that the axis of the clamping roller 400 installed on the upper frame 210 and the axis of the squeezing roller 310 are in the same horizontal plane;

[0089] Step S31: The lower frame 220 moves in a horizontal direction perpendicular to the axial direction of the squeezing roller 310 , so that the axis of the pinch roller 400 moves to be in the same vertical plane as the axis of the squeezing roller 310 .

[0090] like Figure 4 and Figure 5 As shown, in one specific embodiment,

[0091] The lifting structure 230 includes a first supporting arm 231 and a second supporting arm 232 which are cross-arranged, a lower moving member 233 which moves along the lower frame 220, and an upper moving member 234 which moves along the upper frame 210;

[0092] The first support arm 231 and the second support arm 232 are hinged at the intersection position by a hinge structure 239;

[0093] One end of the first support arm 231 is hinged to the upper frame 210 , and the other end of the first support arm 231 is hinged to the lower moving member 233 ;

[0094] One end of the second support arm 232 is hinged to the lower frame 220 , and the other end of the second support arm 232 is hinged to the upper moving member 234 .

[0095] The squeeze roller 310 changing device of the continuous hot-dip galvanizing unit 300 provided in this embodiment can realize the stable movement of the upper frame 210 relative to the lower frame 220 by setting the structure of the first support arm 231 and the second support arm 232 arranged crosswise. Compared with the use of a single hydraulic cylinder structure to push the upper frame 210 to move upward, which is prone to the problem of the upper frame 210 tilting when receiving the squeeze roller 310, the use of the first support arm 231 and the second support arm 232 arranged crosswise can form a relatively stable triangular lifting structure 230, thereby improving the stability of the squeeze roller 310 changing device in the process of extracting the squeeze roller 310.

[0096] Specifically in this embodiment, one end of the first support arm 231 is hinged to the upper frame 210, and the other end of the first support arm 231 is hinged to the lower moving member 233, and the lower moving member 233 can move horizontally along the top of the lower frame 220. One end of the second support arm 232 is hinged to the lower frame 220, and the other end of the second support arm 232 is hinged to the upper moving member 234, and the upper moving member 234 can move horizontally along the bottom of the upper frame 210. Figure 3As shown, when the lifting structure 230 pushes the upper frame 210 to move upward in the vertical direction, the upper moving member 234 and the lower moving member 233 can move in the same direction, and the distance between the end of the first support arm 231 hinged to the upper frame 210 and the upper moving member 234 will become smaller. When the upper frame 210 moves upward in the vertical direction to the uppermost end, the distance between the end of the first support arm 231 hinged to the upper frame 210 and the upper moving member 234 is the smallest; similarly, when the lifting structure 230 pushes the upper frame 210 to move upward in the vertical direction, the distance between the end of the second support arm 232 hinged to the lower frame 220 and the lower moving member 233 will become smaller. When the upper frame 210 moves upward in the vertical direction to the uppermost end, the distance between the end of the second support arm 232 hinged to the lower frame 220 and the lower moving member 233 is the smallest.

[0097] like Figure 4 and Figure 5 As shown, in one specific embodiment,

[0098] The first support arm 231 is hinged to one end of the upper frame 210 close to the squeezing roller 310 , and the second support arm 232 is hinged to one end of the lower frame 220 close to the squeezing roller 310 .

[0099] The roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment is provided by hingedly connecting the second support arm 232 to one end of the lower frame 220 and hingedly connecting the first support arm 231 to one end of the upper frame 210, both of which are arranged close to the squeeze roller 310. That is, when the lifting structure 230 pushes the upper frame 210 to move upward in the vertical direction, the lower moving member 233 and the upper moving member 234 both move to a position close to the squeeze roller 310, and when the clamping roller member 400 clamps the squeeze roller 310 to move away from the continuous hot-dip galvanizing unit 3 00, the first support arm 231 and the second support arm 232 can provide a more stable support structure, avoiding the situation that if the second support arm 232 is hinged to one end of the lower frame 220 and the first support arm 231 is hinged to one end of the upper frame 210, both are set away from the position of the squeezing roller 310, the lower moving member 233 and the upper moving member 234 may be in a state where the clamping roller member 400 clamps the squeezing roller 310 and moves in a direction away from the continuous hot-dip galvanizing unit 300, the upper frame 210 may become unstable.

[0100] Specifically in this embodiment, the first support arm 231 and the upper frame 210 can be rotatably hinged by means of a pin, and the second support arm 232 and the lower frame 220 can also be rotatably hinged by means of a pin.

[0101] like Figure 4 and Figure 6 As shown, in one specific embodiment,

[0102] There are two lifting structures 230, and the two lifting structures 230 are respectively connected between the lower frame 220 and the upper frame 210, wherein the first support arms 231 of the two lifting structures 230 are hinged to the same end of the upper frame 210, and the second support arms 232 of the two lifting structures 230 are hinged to the same end of the lower frame 220.

[0103] The roller changing device for the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment is provided with two lifting structures 230, which can provide a more stable support structure, so that the clamping roller member 400 can stably clamp and perform the extraction operation when clamping the squeeze roller 310.

[0104] In a specific embodiment, the two lifting structures 230 are disposed on opposite sides of the lower frame 220 along the axial direction A of the squeezing roller 310. It can be understood that in another embodiment, the two lifting structures 230 can also be disposed on opposite sides of the lower frame 220 along a direction perpendicular to the axial direction of the squeezing roller 310.

[0105] In the present embodiment, it can be understood that the two first support arms 231 of the two lifting structures 230 are respectively hinged to the same end of the upper frame 210, that is, the two first support arms 231 are respectively hinged to the same side of the upper frame 210, and the two first support arms 231 are arranged parallel to each other, and the second support arms 232 of the two lifting structures 230 are hinged to the same end of the lower frame 220, that is, the two first support arms 231 are respectively hinged to the same side of the lower frame 220, and the two second support arms 232 are arranged parallel to each other.

[0106] like Figures 4 to 6 As shown, in one specific embodiment,

[0107] The lifting structure 230 also includes a connecting arm 235 and a lifting cylinder 236. The connecting arm 235 is arranged between the second support arms 232 of the two lifting structures 230. The two ends of the connecting arm 235 are respectively connected to the two second support arms 232. The cylinder body 2361 of the lifting cylinder 236 is hinged to the lower frame 220, and the cylinder rod 2362 of the lifting cylinder 236 is hinged to the connecting arm 235.

[0108] The roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment can realize hydraulic pushing of the lifting structure 230 through a hydraulic cylinder, thereby driving the upper frame 210 to move upward in the vertical direction.

[0109] Specifically, in this embodiment, the two lifting structures 230 can also be arranged on the opposite sides of the lower frame 220 along the direction perpendicular to the axial direction of the squeeze roller 310. The first support arms 231 of the two lifting structures 230 are hinged to the same end of the upper frame 210 close to the squeeze roller 310, and the second support arms 232 of the two lifting structures 230 are hinged to the same end of the lower frame 220 close to the squeeze roller 310. The cylinder body 2361 of the lifting hydraulic cylinder 236 is hinged to the end of the lower frame 220 away from the squeeze roller 310, and the connecting arm 235 is connected to the second support arm 232. The connection position of 232 is set near the end where the second support arm 232 is hinged to the upper frame 210; in another embodiment, the two lifting structures 230 can also be arranged on the opposite side edges of the lower frame 220 along the axial direction A of the squeezing roller 310, and the connection position of the connecting arm 235 and the second support arm 232 is set near the end where the second support arm 232 is hinged to the upper frame 210, and the cylinder body 2361 of the lifting cylinder 236 is hinged to the lower frame 220 and is set near the end where the second support arm 232 is hinged to the lower frame 220.

[0110] In this embodiment, the thinner cylinder rod 2362 of the lifting cylinder 236 is sleeved in the thicker cylinder body 2361. When the upper frame 210 needs to be raised, the hydraulically controlled thinner cylinder rod 2362 extends out from the thicker cylinder body 2361, and the cylinder rod 2362 pushes the connecting arm 235 to move upward, thereby driving the two second support arms 232 to swing upward, and the upper moving member 234 can move horizontally along the bottom of the upper frame 210. The distance between one end of the first support arm 231 hinged to the upper frame 210 and the upper moving member 234 will become smaller, and at the same time drive the two first support arms 231 to swing upward, and the lower moving member 233 can move horizontally along the top of the lower frame 220. The second support arm 232 is hinged to the lower frame 220. The distance between one end of the upper frame 210 and the lower moving member 233 will become smaller; when the upper frame 210 needs to descend, the hydraulically controlled thinner cylinder rod 2362 is retracted into the thicker cylinder body 2361, and the cylinder rod 2362 drives the connecting arm 235 to move downward, thereby driving the two second support arms 232 to swing downward, and the upper moving member 234 can move horizontally along the bottom of the upper frame 210, and the distance between one end of the first support arm 231 hinged to the upper frame 210 and the upper moving member 234 will become larger, while driving the two first support arms 231 to swing downward, and the lower moving member 233 can move horizontally along the top of the lower frame 220, and the distance between one end of the second support arm 232 hinged to the lower frame 220 and the lower moving member 233 will become larger.

[0111] In this embodiment, the lifting cylinder 236 uses manual pressure to supply liquid to the cylinder rod 2362 to extend. In other embodiments, it can also be driven by electricity, which is not limited to this.

[0112] like Figure 4 and Figure 6As shown, in one specific embodiment,

[0113] The connecting arm 235 is arranged horizontally, and the connection position between the connecting arm 235 and the second supporting arm 232 is arranged near the end where the second supporting arm 232 is hinged to the upper frame 210 . The cylinder body 2361 of the lifting cylinder 236 is hinged to the end of the lower frame 220 away from the squeezing roller 310 .

[0114] The roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment increases the torque of the lifting cylinder 236 pushing the connecting arm 235, which can make the lifting cylinder 236 apply less force when pushing the connecting arm 235 and the second support arm 232.

[0115] In this embodiment, the two lifting structures 230 can also be arranged on the opposite side edges of the lower frame 220 along the direction perpendicular to the axial direction of the squeezing roller 310, the first support arms 231 of the two lifting structures 230 are hinged to the same end of the upper frame 210 close to the squeezing roller 310, the second support arms 232 of the two lifting structures 230 are hinged to the same end of the lower frame 220 close to the squeezing roller 310, the cylinder body 2361 of the lifting hydraulic cylinder 236 is hinged to the end of the lower frame 220 away from the squeezing roller 310, the connecting arm 235 is horizontally connected between the two second support arms 232; the connection position of the connecting arm 235 and the second support arm 232 is set close to the end where the second support arm 232 is hinged to the upper frame 210.

[0116] like Figures 4 to 6 As shown, in one specific embodiment,

[0117] The lifting mechanism 200 also includes a first track 237 and a first wheel group 238. The first track 237 extends in a horizontal direction perpendicular to the axial direction of the squeezing roller 310. The first track 237 is arranged on the top surface of the moving mechanism 100, and the first wheel group 238 is arranged on the bottom of the lower frame 220. The lower frame 220 can reciprocate along the first track 237 through the first wheel group 238.

[0118] The roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment adopts a track structure, which can limit the moving direction and moving range of the lower frame 220 and prevent the lower frame 220 from making unexpected movements.

[0119] Specifically in the present embodiment, the first track 237 is two tracks, and the two tracks are arranged on opposite sides of the top surface of the moving mechanism 100 along the axial direction of the squeezing roller 310; the first wheel group 238 is two pairs of wheel groups, and the two pairs of wheel groups are arranged on opposite sides of the lower frame 220 along the axial direction of the squeezing roller 310; the two pairs of wheel groups of the first wheel group 238 are respectively movably engaged in the two tracks of the first track 237, and the lower frame 220 realizes movement in a horizontal direction perpendicular to the axial direction of the squeezing roller 310 through the first wheel group 238 and the first track 237; in another embodiment, the first track 237 can also be three, four or other multiple tracks, or the first track 237 can also be a single track, and the first wheel group 238 can also be a corresponding number of wheel groups, and there is no specific limitation on this.

[0120] like Figures 4 to 6 As shown, in one specific embodiment,

[0121] The roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 also includes:

[0122] The second track 510 and the second wheel set 520 , the second track 510 extends along the axial direction A of the squeezing roller 310 and is arranged on the ground, the second wheel set 520 is arranged at the bottom of the moving mechanism 100 , and the moving mechanism 100 can reciprocate along the second track 510 through the second wheel set 520 .

[0123] The roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment adopts a track structure, which can limit the moving direction and moving range of the moving mechanism 100 and avoid the moving mechanism 100 from making unexpected movements.

[0124] Specifically in the present embodiment, the second track 510 is two tracks, and the two tracks are arranged on opposite sides of the ground along a direction perpendicular to the axial direction of the squeezing roller 310. The second wheel group 520 is two pairs of wheel groups, and the two pairs of wheel groups are arranged on opposite sides of the moving mechanism 100 along a direction perpendicular to the axial direction of the squeezing roller 310. The two pairs of wheel groups of the second wheel group 520 are respectively movably engaged in the two tracks of the second track 510, and the moving mechanism 100 realizes the movement along the axial direction of the squeezing roller 310 through the second wheel group 520 and the second track 510. In another embodiment, the second track 510 can also be three, four or other multiple tracks, or the first track 237 can also be a single track, and the first wheel group 238 can also be a corresponding number of wheel groups, and there is no specific limitation on this.

[0125] like Figures 4 to 7 As shown, in one specific embodiment,

[0126] The first track 237 has a first track upper edge 2371 and a first track bottom surface 2372, and the first wheel set 238 is movably engaged between the first track upper edge 2371 and the first track bottom surface 2372 to limit the movement of the first wheel set 238 in the vertical direction;

[0127] The second track 510 has a second track upper edge 511 and a second track bottom surface 512 , and the second wheel set 520 is movably engaged between the second track upper edge 511 and the second track bottom surface 512 to limit the movement of the second wheel set 520 in the vertical direction.

[0128] The roller changing device for the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment can make it possible for the first track upper edge 2371 and the first track bottom surface 2372 to be arranged on the first track 237 so that when the moving mechanism 100 moves along the axial direction A of the squeeze roller 310 in a direction away from the continuous hot-dip galvanizing unit 300 and completely pulls the squeeze roller 310 out of the equipment of the continuous hot-dip galvanizing unit 300, the first track upper edge 2371 can clamp the lower frame 220 through the first wheel set 238 to prevent the lower frame 220 from tipping over due to the change of the center of gravity;

[0129] The roller changing device for the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment, by arranging the second track upper edge 511 and the second track bottom surface 512 on the second track 510, can make it possible for when the moving mechanism 100 moves along the axial direction A of the squeeze roller 310 in the direction away from the continuous hot-dip galvanizing unit 300 and completely pulls the squeeze roller 310 out of the equipment of the continuous hot-dip galvanizing unit 300, the second track upper edge 511 can clamp the moving mechanism 100 through the second wheel group 520 to prevent the moving mechanism 100 from tipping over due to the change of the center of gravity.

[0130] like Figures 4 to 7 As shown, in one specific embodiment,

[0131] The roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 also includes:

[0132] A plurality of track stoppers 600 are respectively arranged at the bottom of the lower frame 220 and the bottom of the moving mechanism 100. The track stoppers 600 have a stopper 610 that can move downward and abut against the upper edge 2371 of the first track or the upper edge 511 of the second track.

[0133] Among them, when the limiter 610 of the track limiter 600 provided on the lower frame 220 moves downward and abuts against the upper edge 2371 of the first track, the track limiter 600 can limit the movement of the lower frame 220 along the first track 237; when the limiter 610 of the track limiter 600 provided on the moving mechanism 100 moves downward and abuts against the upper edge 511 of the second track, the track limiter 600 can limit the movement of the moving mechanism 100 along the second track 510.

[0134] The roller changing device for the squeezing roller 310 of the continuous hot-dip galvanizing unit 300 provided in this embodiment can limit the movement of the lower frame 220 along the first track 237 or limit the movement of the moving mechanism 100 along the second track 510 by setting the track limiter 600, thereby avoiding the displacement of the lower frame 220 when the moving mechanism 100 moves along the second track 510, or the displacement of the moving mechanism 100 when the lower frame 220 moves along the first track 237, that is, avoiding the occurrence of deviation when the axis center of the clamping roller 400 is aligned with the axis of the squeezing roller 310.

[0135] Specifically in this embodiment, when the limiter 610 of the track limiter 600 arranged on the lower frame 220 moves downward, the limiter 610 can abut and clamp on the top of the upper edge 2371 of the first track; when the limiter 610 of the track limiter 600 arranged on the moving mechanism 100 moves downward, the limiter 610 can abut and clamp on the top of the upper edge 511 of the second track.

[0136] It should be noted that, in conjunction with Figure 8 As shown, in this embodiment, the steps of using the roller changing device of the squeeze roller 310 of the continuous hot-dip galvanizing unit 300 are as follows:

[0137] Step S1: When the replacement work starts, the moving mechanism 100 moves from the waiting position along the second track 510 to a position close to the squeeze roller 310, and the limiter 610 of the track limiter 600 of the moving mechanism 100 moves downward and abuts against the upper edge 511 of the second track;

[0138] Step S2: After the lower frame 220 moves along the first track 237 until the axis of the clamping roller 400 installed on the upper frame 210 and the axis of the squeeze roller 310 are in the same vertical plane, the limiter 610 of the track limiter 600 provided on the lower frame 220 moves downward and abuts against the upper edge 2371 of the first track;

[0139] Step S3: The hydraulic control cylinder rod 2362 pushes the first support arm 231 and the second support arm 232 to swing upward, thereby driving the upper frame 210 to move upward until the axis of the clamping roller 400 and the axis of the squeeze roller 310 are in the same straight line;

[0140] Step S4: After the stopper 610 of the track stopper 600 of the moving mechanism 100 moves upward and separates from the upper edge 511 of the second track, the moving mechanism 100 continues to move along the second track 510 toward the squeezing roller 310 until the clamping roller device of the clamping roller member 400 sleeves one end of the squeezing roller 310, and then the connection between the clamping roller device and the squeezing roller 310 is changed to a fixed connection;

[0141] Step S5: the moving mechanism 100 moves along the second track 510 in a direction away from the continuous hot-dip galvanizing unit 300 until the squeeze roller 310 is completely pulled out of the equipment of the continuous hot-dip galvanizing unit 300;

[0142] Step S6: The hydraulic control cylinder rod 2362 pushes the first support arm 231 and the second support arm 232 to swing downward, thereby driving the upper frame 210 to move downward to a height that is convenient for the operator to operate, and separates the squeeze roller 310 from the clamping roller member 400 to complete the extraction operation;

[0143] Step S7: Select a new squeeze roller 310, and fix the new squeeze roller 310 to the clamping roller 400, so that the axis of the new squeeze roller 310 and the axis of the clamping roller 400 are located on the same straight line;

[0144] Step S8: The hydraulic control cylinder rod 2362 pushes the first support arm 231 and the second support arm 232 to swing upward, thereby driving the upper frame 210 to move upward until the axis of the clamping roller 400 and the axis of the squeeze roller 310 are in the same straight line;

[0145] Step S9: The moving mechanism 100 continues to move along the second track 510 toward the hot-dip galvanizing unit until the new squeeze roller 310 is inserted into the bearing seat, and then the new squeeze roller 310 is separated from the clamping roller member 400. After completing this step, the moving mechanism 100 moves along the second track 510 toward the parking position away from the continuous hot-dip galvanizing unit 300, waiting for the next replacement.

[0146] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A squeeze roll changing device for a continuous hot dip galvanizing unit, characterized in that: include: A moving mechanism, wherein the moving mechanism can reciprocate along the axial direction of the squeeze roller of the continuous hot-dip galvanizing unit; A lifting mechanism, the lifting mechanism includes an upper frame, a lower frame, and a lifting structure, the lower frame is arranged on the top of the moving mechanism and can reciprocate in a horizontal direction perpendicular to the axial direction of the squeezing roller, the upper frame is arranged on the top of the lower frame, and the end of the upper frame close to the squeezing roller is provided with a clamping roller member for clamping the squeezing roller, the lifting structure is connected between the lower frame and the upper frame, and the lifting structure is used to drive the upper frame to move in the vertical direction so that the axis of the clamping roller member is aligned with the squeezing roller and can be connected to the squeezing roller for extraction operation.

2. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 1, characterized in that: The lifting structure comprises a first supporting arm and a second supporting arm arranged crosswise, a lower moving member moving along the lower frame and an upper moving member moving along the upper frame; The first support arm and the second support arm are hinged at the intersection position through a hinge structure; One end of the first support arm is hinged to the upper frame, and the other end of the first support arm is hinged to the lower moving member; One end of the second supporting arm is hinged to the lower frame, and the other end of the second supporting arm is hinged to the upper moving member.

3. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 2, characterized in that: The first support arm is hinged to one end of the upper frame close to the squeezing roller, and the second support arm is hinged to one end of the lower frame close to the squeezing roller.

4. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 3, characterized in that: There are two lifting structures, and the two lifting structures are respectively connected between the lower frame and the upper frame, wherein the first support arms of the two lifting structures are hinged to the same end of the upper frame, and the second support arms of the two lifting structures are hinged to the same end of the lower frame.

5. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 4, characterized in that: The lifting structure also includes a connecting arm and a lifting cylinder. The connecting arm is arranged between the second support arms of the two lifting structures. The two ends of the connecting arm are respectively connected to the two second support arms. The cylinder body of the lifting cylinder is hinged to the lower frame, and the cylinder rod of the lifting cylinder is hinged to the connecting arm.

6. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 5, characterized in that: The connecting arm is arranged horizontally, and the connection position between the connecting arm and the second supporting arm is arranged near the end where the second supporting arm is hinged to the upper frame, and the cylinder body of the lifting cylinder is hinged to the end of the lower frame away from the squeezing roller.

7. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 1, characterized in that: The lifting mechanism also includes a first track and a first wheel group. The first track extends in a horizontal direction perpendicular to the axial direction of the squeezing roller. The first track is arranged on the top surface of the moving mechanism. The first wheel group is arranged on the bottom of the lower frame. The lower frame can reciprocate along the first track through the first wheel group.

8. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 7, characterized in that: The squeeze roller changing device of the continuous hot-dip galvanizing unit also includes: A second track and a second wheel set, wherein the second track is arranged on the ground and extends along the axial direction of the squeeze roller, and the second wheel set is arranged at the bottom of the moving mechanism, and the moving mechanism can reciprocate along the second track through the second wheel set.

9. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 8, characterized in that: The first track has a first track upper edge and a first track bottom surface, and the first wheel set is movably engaged between the first track upper edge and the first track bottom surface to limit the movement of the first wheel set in the vertical direction; The second track has a second track upper edge and a second track bottom surface, and the second wheel set is movably engaged between the second track upper edge and the second track bottom surface to limit the movement of the second wheel set in the vertical direction.

10. The squeeze roller changing device of the continuous hot dip galvanizing unit according to claim 9, characterized in that: The squeeze roller changing device of the continuous hot-dip galvanizing unit also includes: A plurality of track stoppers, wherein the plurality of track stoppers are respectively arranged at the bottom of the lower frame and the bottom of the moving mechanism, and the track stoppers have a stopper that can move downward and abut against the upper edge of the first track or the upper edge of the second track, Among them, when the limiter of the track limiter provided on the lower frame moves downward and abuts against the upper edge of the first track, the track limiter can limit the movement of the lower frame along the first track; when the limiter of the track limiter provided on the moving mechanism moves downward and abuts against the upper edge of the second track, the track limiter can limit the movement of the moving mechanism along the second track.

Images