A roll gap debugging mechanism and debugging method for a short stress rolling mill

Abstract

The present invention relates to the technical field of short-stress rolling mills, and particularly relates to a roll gap debugging mechanism and a debugging method for a short-stress rolling mill, including a rolling mill frame, a fixed cover plate fixed above the rolling mill frame by bolts, and a plurality of support cover plates fixed on the fixed cover plate by bolts. It further includes a roll spacing measuring mechanism for measuring the actual change value of the roll gap, and a plurality of roll diameter limiting rods and a plurality of spacing limiting rods for supporting and measuring the rolling rolls. The roll spacing measuring mechanism includes an upper roll measuring mechanism, a lower roll measuring mechanism, and a roll interval measuring mechanism. Through the three measurements, the height at which the rolling roll gap of the short-stress rolling mill is located can be determined. At the same time, the two rolling rolls can also be measured when they move up and down to adjust the roll gap, so as to determine whether the roll gap adjustment value is the same as the actual roll gap adjustment value, and further determine whether the internal structure of the screwdown device of the short-stress rolling mill is damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of short stress rolling mills, and particularly to a roll gap debugging mechanism and debugging method for a short stress rolling mill. Background Art

[0002] With the development of the steel industry and the increasing requirements of users for the quality of steel products, the requirements for rolling mills in steel mills are also getting higher and higher. The short stress line rolling mill has the advantages of high stiffness, high product precision, light equipment weight, simple operation. To achieve the goal of high yield, high quality and low consumption, high-stiffness short stress line rolling mills are generally adopted in modern small-section bar, wire rod and narrow strip steel rolling workshops. This type of rolling mill has become the mainstream model configured by steel enterprises around the world due to its large frame stiffness, high product precision, light equipment weight, symmetrical roll gap adjustment, simple operation, reliable work and low investment.

[0003] The short stress line rolling mill consists of parts such as a frame, rolls, a transmission device, an adjustment device and a lubrication system. Each part works together to achieve the rolling process. The frame provides a stable foundation, the rolls complete the rolling task, the transmission device transmits power, the adjustment device ensures rolling precision, and the lubrication system reduces wear. Among them, the transmission device is the power source of the short stress line rolling mill. It transmits the power of the motor to the rolls through equipment such as a speed reducer and a coupling, driving the rolls to rotate. During the power transmission process, the main function of the tie rod device is to transmit the power of the screw down device to the copper nut, and the copper nut is installed in the bearing housing, thereby driving the bearing housing to move up and down, and finally realizing the adjustment of the roll gap.

[0004] The screw down device mainly drives the tie rod to rotate through a worm gear, a worm and a gear to realize the synchronous up and down adjustment of the roll gap. It can adjust both the operating side and the drive side at the same time, or disconnect the coupling shaft for single-side adjustment. The entire screw down mechanism can precisely adjust the roll gap remotely under the combined action of machinery, hydraulics and electricity.

[0005] After the short stress rolling mill has been used for a long time, the worm gear, worm and gear in the screw down device will show wear, and even more seriously, the bearing will be damaged. In this case, when adjusting the roll gap of the short stress rolling mill through the screw down device, the adjusted size will be inappropriate, affecting the quality of steel wire rods.

[0006] The purpose of the present invention is to solve the problem that the roll gap adjustment size of the short stress rolling mill is prone to errors after long-term use. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a roll gap debugging mechanism and debugging method for a short stress rolling mill, which can effectively solve the existing problems.

[0008] To achieve the above object, the present invention is realized by the following technical solutions:

[0009] The present invention provides a short stress rolling mill roll gap debugging mechanism, including a rolling mill frame, a fixed cover plate fixed above the rolling mill frame by bolts, and a plurality of support cover plates fixed on the fixed cover plate by bolts. It further includes a roll spacing measuring mechanism for measuring the actual change value of the roll gap, and a plurality of roll diameter limiting rods and a plurality of spacing limiting rods for supporting and measuring the rolls; the roll spacing measuring mechanism includes an upper roll measuring mechanism, a lower roll measuring mechanism, and a roll interval measuring mechanism. The upper roll measuring mechanism is used to measure the roll diameter of the upper roll, the lower roll measuring mechanism is used to measure the roll diameter of the lower roll, and the roll interval measuring mechanism measures the distance between the two rolls; the upper roll measuring mechanism includes two first roll measuring rods, the tops of the two first roll measuring rods are fixedly connected to a support cover plate, and scale lines are provided on both sides of the first roll measuring rods; the lower roll measuring mechanism includes two second roll measuring rods, the tops of the two second roll measuring rods are fixedly connected to another support cover plate, and scale lines are provided on both sides of the second roll measuring rods; the roll interval measuring mechanism includes two roll spacing measuring rods, the tops of the two roll spacing measuring rods are fixedly connected to another support cover plate by bolts, and scale lines are provided on both sides of the roll spacing measuring rods.

[0010] Further, the length of the second roll measuring rod is greater than the length of the first roll measuring rod.

[0011] Further, a moving slider is slidably connected inside both the first roll measuring rod and the second roll measuring rod; a through hole is machined at the bottom of the side of the moving slider facing away from the rolling mill frame, and an extension frame is machined at the bottom of the side of the moving slider facing the rolling mill frame; a telescopic spring is fixedly connected inside the moving slider, and one end of the telescopic spring is fixedly connected to a telescopic connecting frame.

[0012] Further, grooves are also machined on both sides inside the first roll measuring rod and the second roll measuring rod for limiting the wing plates of the moving slider; the inner diameter dimensions of the through hole and the extension frame are equal to the outer diameter dimensions of the roll diameter limiting rod; a fixing hole is machined at the bottom of the telescopic connecting frame, and a fixing groove is machined on the roll diameter limiting rod. The telescopic connecting frame and the roll diameter limiting rod are fixed by bolts between the fixing hole and the fixing groove.

[0013] Still further, a fixed connecting plate is fixedly connected to one side of the moving slider located in the through hole, and another fixed connecting plate is fixedly connected to the side of the fixing hole facing away from the rolling mill frame. Rotating connecting rods are rotatably connected to both fixed connecting plates. The two rotating connecting rods have the same length and are not in the same plane. One end of the rotating connecting rod is fixedly connected to a rotating shaft, and the two rotating shafts are rotatably connected to the same central positioning shaft. A positioning pin is machined at the central axis of the central positioning shaft.

[0014] Furthermore, a sliding frame is slidably connected inside the roll spacing measuring rod; an elastic telescopic column is fixedly connected to the top of the sliding frame, and the telescopic end of the elastic telescopic column is fixedly connected to a fixed frame.

[0015] Furthermore, grooves are machined on both sides inside the roll spacing measuring rod for limiting the wing plates of the sliding frame; a positioning hole is machined at the bottom of the sliding frame, a positioning groove is machined on the spacing limiting rod, and the spacing limiting rod is fixed to the sliding frame through a bolt between the positioning hole and the positioning groove.

[0016] Still further, a fixed connecting plate is fixedly connected to one side of the fixed frame facing away from the rolling mill frame, another fixed connecting plate is fixedly connected to one side of the sliding frame facing away from the rolling mill frame, rotating connecting rods are rotatably connected to both fixed connecting plates, the lengths of the two rotating connecting rods are the same and they are not in the same plane, one end of the rotating connecting rod is fixedly connected to a rotating shaft, the two rotating shafts are rotatably connected to the same central positioning shaft, and a positioning pin is machined at the central axis of the central positioning shaft.

[0017] Furthermore, the width of the roll diameter limiting rod is greater than the pitch of the roll, and the width of the spacing limiting rod is less than the pitch of the roll.

[0018] A debugging method for a short stress rolling mill roll gap debugging mechanism includes:

[0019] S1: First, install two fixed cover plates on the rolling mill frame, select corresponding measurement positions and install three support cover plates on the fixed cover plates, and then install the first roll measuring rod, the second roll measuring rod, and the roll spacing measuring rod on the corresponding support cover plates;

[0020] S2: Install the roll diameter limiting rod on the upper and lower sides of the upper and lower rolls respectively through the first roll measuring rod and the second roll measuring rod, install the spacing limiting rod on the upper and lower sides of the upper and lower rolls respectively through the roll spacing measuring rod, and after the installation is completed and the mechanism is stable, fix the roll diameter limiting rod and the spacing limiting rod through bolts;

[0021] S3: Take readings and record the roll diameters of the upper and lower rolls, the center axis distance between the upper and lower rolls, the distance between the upper and lower rolls, the height of the upper surface of the spacing limiting rod located below the upper roll, and the height of the lower surface of the spacing limiting rod located above the lower roll;

[0022] S4: Start the screwdown device to adjust the roll gap. After the adjustment is completed, repeat S3 and compare with the adjustment data of the screwdown device. If the difference is greater than 0.2 mm, the screwdown device needs to be repaired and maintained.

[0023] Beneficial effects

[0024] The technical solution provided by the present invention has the following beneficial effects compared with the known public technologies:

[0025] The upper roll measuring mechanism is used to measure the roll diameter of the upper roll, the lower roll measuring mechanism is used to measure the roll diameter of the lower roll, and the roll spacing measuring mechanism measures the maximum distance and the minimum distance between the two rolls. Through the above three measurements, the height of the rolling roll gap of the short stress rolling mill can be determined. At the same time, it can also measure when the two rolls move up and down to adjust the roll gap, so as to determine whether the roll gap adjustment value is the same as the actual roll gap adjustment value, and further determine whether the internal structure of the screwdown device of the short stress rolling mill is damaged. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is the overall schematic diagram of the roll gap debugging mechanism of the short stress rolling mill of the present invention;

[0028] Figure 2 It is the structural schematic diagram of the first roll measuring rod of the present invention;

[0029] Figure 3 It is the exploded structural schematic diagram of the first roll measuring rod of the present invention;

[0030] Figure 4 It is the structural schematic diagram of the central positioning shaft of the present invention;

[0031] Figure 5 It is the structural schematic diagram of the roll spacing measuring rod of the present invention;

[0032] Figure 6 It is the exploded structural schematic diagram of the roll spacing measuring rod of the present invention;

[0033] Figure 7 It is the structural schematic diagram of the roll diameter limiting rod and the spacing limiting rod on the upper and lower rolls of the present invention;

[0034] Figure 8 It is the force schematic diagram when the roll diameter limiting rod contacts the upper and lower rolls of the present invention;

[0035] Figure 9 It is the force schematic diagram when the spacing limiting rod contacts the upper and lower rolls of the present invention.

[0036] Reference Signs

[0037] 100 - Rolling mill frame; 101 - Fixed cover plate; 102 - Support cover plate;

[0038] 200 - Roll gap measuring mechanism; 210 - First roll measuring rod; 211 - Moving slider; 212 - Extension frame; 213 - Through hole; 214 - Telescopic spring; 215 - Telescopic connecting frame; 216 - Fixed hole; 220 - Second roll measuring rod; 230 - Roll gap measuring rod; 231 - Sliding frame body; 232 - Elastic telescopic column; 233 - Fixed frame; 234 - Positioning hole;

[0039] 300 - Central positioning shaft; 301 - Rotating connecting rod; 302 - Fixed connecting plate; 303 - Positioning pin; 304 - Rotating shaft;

[0040] 400 - Roll diameter limiting rod;

[0041] 500 - Spacing limiting rod. Detailed implementation manners

[0042] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although some embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not used to limit the protection scope of the present disclosure.

[0043] In addition, it should be noted that for the sake of description, only parts related to the relevant invention are shown in the drawings. Without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other.

[0044] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependent relationships.

[0045] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly specified in the context, it should be understood as "one or more".

[0046] The present disclosure will be described in detail below with reference to the drawings and in combination with the embodiments.

[0047] The present invention will be further described below in combination with the embodiments.

[0048] Embodiment:

[0049] A short stress rolling mill roll gap debugging mechanism, as Figures 1-6As shown in the figure, it includes a rolling mill stand 100, a fixed cover plate 101 fixed above the rolling mill stand 100 by bolts, and a plurality of support cover plates 102 fixed on the fixed cover plate 101 by bolts. It also includes a roll gap measuring mechanism 200 for measuring the actual change value of the roll gap, and a plurality of roll diameter limiting rods 400 and a plurality of gap limiting rods 500 for supporting and measuring the rolls. The roll gap measuring mechanism 200 includes an upper roll measuring mechanism, a lower roll measuring mechanism, and a roll interval measuring mechanism. It should be noted that the upper roll measuring mechanism is used to measure the roll diameter of the upper roll, the lower roll measuring mechanism is used to measure the roll diameter of the lower roll, and the roll interval measuring mechanism measures the maximum distance and the minimum distance between the two rolls. Through the above three measurements, the height of the rolling roll gap of the short stress rolling mill can be determined. At the same time, it can also measure the two rolls when adjusting the roll gap up and down, so as to determine whether the roll gap adjustment value is the same as the actual roll gap adjustment value. If they are the same, it proves that the working condition of the screwdown device of the short stress rolling mill is good. If they are different, the screwdown device needs to be repaired and maintained. It should be noted that the height in this article starts from the lower surface of the support cover plate 102 and extends downward as the height distance;

[0050] In some solutions, the upper roll measuring mechanism includes two first roll measuring rods 210. The tops of the two first roll measuring rods 210 are fixedly connected to a support cover plate 102. Scale lines are provided on both sides of the first roll measuring rod 210. The lower roll measuring mechanism includes two second roll measuring rods 220. The tops of the two second roll measuring rods 220 are fixedly connected to another support cover plate 102. Scale lines are provided on both sides of the second roll measuring rod 220. The length of the second roll measuring rod 220 is greater than that of the first roll measuring rod 210. Specifically, a moving slider 211 is slidably connected inside both the first roll measuring rod 210 and the second roll measuring rod 220. Grooves are also machined on both sides inside the first roll measuring rod 210 and the second roll measuring rod 220 for limiting the wing plates of the moving slider 211 to prevent the moving slider 211 from disengaging from the first roll measuring rod 210 and the second roll measuring rod 220. A through hole 213 is machined at the bottom of the side of the moving slider 211 facing away from the rolling mill frame 100. An extension frame 212 is machined at the bottom of the side of the moving slider 211 facing the rolling mill frame 100. The inner diameter dimensions of the through hole 213 and the extension frame 212 are equal to the outer diameter dimension of the roll diameter limiting rod 400. It should be noted that a bolt is also provided on the extension frame 212 to fix the roll diameter limiting rod 400 passing through it. The roll diameter limiting rod 400 on the moving slider 211 is used for limiting and measuring the upper surfaces of the upper and lower rolls. A telescopic spring 214 is fixedly connected inside the moving slider 211. One end of the telescopic spring 214 is fixedly connected to a telescopic connecting frame 215. A fixing hole 216 is machined at the bottom of the telescopic connecting frame 215. A fixing groove is machined on the roll diameter limiting rod 400. The telescopic connecting frame 215 and the roll diameter limiting rod 400 are fixed by bolts between the fixing hole 216 and the fixing groove. It should be noted that as Figure 8 shown, the overall gravity of the moving slider 211 on the first roll measuring rod 210 is G1, which applies a downward force to the roll diameter limiting rod 400 located above the upper roll to ensure its close contact with the upper roll. Similarly, the overall gravity G2 of the moving slider 211 on the second roll measuring rod 220 applies a force to the lower roll to ensure its close contact with the lower roll. The telescopic spring 214 on the first roll measuring rod 210 applies an upward elastic force F1 to the telescopic connecting frame 215 due to elongation, and applies an upward force to the roll diameter limiting rod 400 located below the upper roll through transmission, so as to ensure its close contact with the upper roll. Similarly, the one on the second roll measuring rod 220 is also in close contact with the lower roll. Through the close contact of multiple roll diameter limiting rods 400 with the upper and lower rolls, and by measuring the height of the roll diameter limiting rod 400 by the first roll measuring rod 210 and the second roll measuring rod 220, the roll diameters of the two rolls can be obtained, and at the same time, the axial distance of the central axes of the two rolls can also be obtained;

[0051] Further, the roll spacing measuring mechanism includes two roll spacing measuring rods 230. The tops of the two roll spacing measuring rods 230 are fixedly connected to another support cover plate 102 by bolts. Scale lines are provided on both sides of the roll spacing measuring rods 230. A sliding frame 231 is slidably connected inside the roll spacing measuring rods 230. Grooves are machined on both sides inside the roll spacing measuring rods 230 to limit the wing plates of the sliding frame 231 and prevent the sliding frame 231 from detaching from the roll spacing measuring rods 230. An elastic telescopic column 232 is fixedly connected to the top of the sliding frame 231. The telescopic end of the elastic telescopic column 232 is fixedly connected to a fixed frame 233. The inner diameter of the fixed frame 233 is equal to the outer diameter of the spacing limiting rod 500. It should be noted that bolts are also machined at the bottom of the fixed frame 233 to fix the spacing limiting rod 500 therein. A clamping hole 234 is machined at the bottom of the sliding frame 231, and a clamping groove is machined on the spacing limiting rod 500. The spacing limiting rod 500 is fixed to the sliding frame 231 by bolts between the clamping hole 234 and the clamping groove. It should be noted that, as Figure 9 shown, the spacing limiting rod 500 located below the upper roll passes through the fixed frame 233, and the spacing limiting rod 500 located above the lower roll is fixed to the sliding frame 231 by bolts passing through the clamping hole 234. At this time, the overall gravity G3 of the sliding frame 231 exerts a downward force on the spacing limiting rod 500 located above the lower roll, making it closely connected to the lower roll. Since the elastic telescopic column 232 is in an extended state, it has an upward elastic force on the fixed frame 233. Through the transmission of force, the spacing limiting rod 500 located below the upper roll is closely connected to the upper roll, so that the staff can measure the spacing between the two rolls through the spacing limiting rod 500;

[0052] In addition, as Figure 7 shown, the width of the roll diameter limiting rod 400 is greater than the pitch of the roll, and the width of the spacing limiting rod 500 is less than the pitch of the roll.

[0053] In some solutions, to facilitate the staff to quickly read out the height of the central axis of the roll, a fixed connecting plate 302 is fixedly connected to one side of the moving slider 211 located in the through hole 213, and another fixed connecting plate 302 is fixedly connected to the side of the fixed hole 216 facing away from the rolling mill frame 100. Rotating connecting rods 301 are rotatably connected to both fixed connecting plates 302. The two rotating connecting rods 301 have the same length and are not in the same plane. One end of the rotating connecting rod 301 is fixedly connected to a rotating shaft 304, and the two rotating shafts 304 are rotatably connected to the same central positioning shaft 300. A positioning pin 303 is machined at the central axis of the central positioning shaft 300. It should be noted that the two fixed connecting plates 302 are respectively in the same plane as the corresponding roll diameter limiting rods 400. The rotating connecting rods 301 thereon rotate with the change of the distance between the bottom of the moving slider 211 and the bottom of the telescopic connecting frame 215. Since the two rotating connecting rods 301 have the same length, the central positioning shaft 300 is always in the middle position between the two fixed connecting plates 302, and the height of the central axis of the roll can be quickly read out through the positioning pin 303, improving work efficiency;

[0054] Further, in the case where the upper and lower roll diameters are the same, to facilitate the staff to quickly read out the height of the rolling roll gap, the two fixed connecting plates 302 are respectively arranged on one side of the fixed frame 233 and one side of the sliding frame body 231. At this time, the scale line on the roll spacing measuring rod 230 corresponding to the positioning pin 303 is the height of the rolling roll gap.

[0055] In the use of this embodiment, the staff first installs two fixed cover plates 101 on the rolling mill frame 100, selects corresponding measurement positions and installs three support cover plates 102 on the fixed cover plates 101, then installs the first roll measuring rod 210, the second roll measuring rod 220, and the roll spacing measuring rod 230 on the corresponding support cover plates 102. Then, the staff first pulls up the moving slider 211 from the first roll measuring rod 210 so that the through hole 213 is located at the upper surface of the upper roll. The roll diameter limiting rod 400 is inserted through the through hole 213 and passed through another through hole 213. Then, the staff needs to pull the telescopic connecting frame 215 so that the lower surface inside the telescopic connecting frame 215 is located below the upper roll. Immediately afterwards, the roll diameter limiting rod 400 is inserted into it and is located below the upper roll and contacts the bottom of another telescopic connecting frame 215 at the same time. After the roll diameter limiting rod 400 is stable, the extension frame 212 and the fixing hole 216 are fixed by bolts. At this time, the upper roll and the first roll measuring rod 210 and other structures form a whole. In the subsequent roll gap adjustment, when the upper roll moves, it will drive the whole to move; by the above method, it can also be applied to the second roll measuring rod 220; the staff pulls up the sliding frame body 231 so that the lower surface of the sliding frame body 231 is located above the lower roll, then the spacing limiting rod 500 is passed through the inside of the sliding frame body 231 and contacts another one 21 and is fixed to it by bolts and the positioning holes 234. In the natural state of the elastic telescopic column 232, the lower surface of the fixed frame 233 and the sliding frame body 231 is relatively far inward. At this time, the staff needs to pull the fixed frame 233 so that the elastic telescopic column 232 extends until the upper surface of the fixed frame 233 is located below the upper roll. At this time, the staff passes the spacing limiting rod 500 through the fixed frame 233 and connects it to another fixed frame 233. At this time, the spacing limiting rod 500 in the fixed frame 233 is fixed by bolts. At this time, the elastic telescopic column 232 has an upward contracting elastic force, so that the spacing limiting rod 500 is in close contact with the roll;

[0056] Reading: The lower surface of the roll diameter limiting rod 400 located above the upper roll, the upper surface of the roll diameter limiting rod 400 located below the upper roll, the difference between the two is the roll diameter of the upper roll, and the height of the central axis is the average of the two, which is also the height where the corresponding positioning pin 303 is located; the lower surface of the roll diameter limiting rod 400 located above the lower roll, the upper surface of the roll diameter limiting rod 400 located below the lower roll, the difference between the two is the roll diameter, and the height of the central axis is the average of the two, which is also the height where the corresponding positioning pin 303 is located; the upper surface of the spacing limiting rod 500 located below the upper roll, the lower surface of the spacing limiting rod 500 located above the lower roll, the difference between the two is the distance between the upper and lower rolls. When the roll diameters of the upper and lower rolls are the same, the reading corresponding to the positioning pin 303 on the roll spacing measuring rod 230 is the rolling roll gap;

[0057] When starting to adjust the roll gap by the screwdown device, the upper and lower rolls move vertically. When they move, they carry the corresponding integral body, so that the two spacing limit rods 500 move synchronously. The height difference of the spacing limit rod 500 before and after moving is the actual roll gap adjustment value, and then it is compared with the data adjusted by the screwdown device. If the difference is greater than 0.2 mm, the internal components of the screwdown device are damaged and need maintenance.

[0058] A debugging method for a roll gap debugging mechanism of a short stress mill, comprising:

[0059] S1: First, install two fixed cover plates 101 on the rolling mill frame 100, and select corresponding measurement positions to install three support cover plates 102 on the fixed cover plates 101. Then, install the first roll measuring rod 210, the second roll measuring rod 220, and the roll spacing measuring rod 230 on the corresponding support cover plates 102.

[0060] S2: Install the roll diameter limit rods 400 on the upper and lower sides of the upper and lower rolls respectively through the first roll measuring rod 210 and the second roll measuring rod 220, and install the spacing limit rods 500 on the upper and lower sides of the upper and lower rolls respectively through the roll spacing measuring rod 230. After the installation is completed and the mechanism is stable, fix the roll diameter limit rods 400 and the spacing limit rods 500 with bolts.

[0061] S3: Take readings and record the roll diameters of the upper and lower rolls, the center axis distance between the upper and lower rolls, the distance between the upper and lower rolls, the height of the upper surface of the spacing limit rod 500 below the upper roll, and the height of the lower surface of the spacing limit rod 500 above the lower roll.

[0062] S4: Start the screwdown device to adjust the roll gap. After the adjustment is completed, repeat S3 and compare it with the data adjusted by the screwdown device. If the difference is greater than 0.2 mm, the screwdown device needs to be maintained.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A short stress rolling mill roll gap adjustment mechanism, comprising a rolling mill frame (100), a fixed cover plate (101) fixed above the rolling mill frame (100) by bolts, and a plurality of support cover plates (102) fixed to the fixed cover plate (101) by bolts, characterized in that: It also includes a roller spacing measurement mechanism (200) for measuring the actual change value of the roller gap, and a plurality of roller diameter limiting rods (400) and a plurality of spacing limiting rods (500) for supporting the measuring rollers; the roller spacing measurement mechanism (200) includes an upper roller measurement mechanism, a lower roller measurement mechanism and a roller spacing measurement mechanism, the upper roller measurement mechanism is used to measure the roller diameter of the roller located above, the lower roller measurement mechanism is used to measure the roller diameter of the roller located below, and the roller spacing measurement mechanism measures the distance between the two rollers; The upper roll measuring mechanism comprises two first roll measuring rods (210), the tops of the two first roll measuring rods (210) are fixedly connected to a support cover plate (102), and scale lines are provided on both sides of the first roll measuring rods (210); The lower roller measuring mechanism comprises two second roller measuring rods (220), the tops of the two second roller measuring rods (220) are fixedly connected to another supporting cover plate (102), and scale lines are arranged on both sides of the second roller measuring rods (220); The roller spacing measuring mechanism comprises two roller spacing measuring rods (230), the tops of the two roller spacing measuring rods (230) are fixedly connected to another supporting cover plate (102) by bolts, and scale lines are arranged on both sides of the roller spacing measuring rods (230); The first roll measuring rod (210) and the second roll measuring rod (220) are both slidably connected to a movable slider; a through hole (213) is processed at the bottom of the movable slider (211) on the side facing away from the rolling mill frame (100), and an extension frame (212) is processed at the bottom of the movable slider (211) on the side facing the rolling mill frame (100); a telescopic spring (214) is fixedly connected to the inside of the movable slider (211), and one end of the telescopic spring (214) is fixedly connected to a telescopic connecting frame (215). The bottom of the telescopic connecting frame (215) is processed with a fixing hole (216), and the roller diameter limiting rod (400) is processed with a fixing groove, and the telescopic connecting frame (215) and the roller diameter limiting rod (400) are fixed by bolts between the fixing hole (216) and the fixing groove; the extension frame (212) is also provided with bolts to fix the roller diameter limiting rod (400) passing through it, and the roller diameter limiting rod (400) on the movable slider (211) is used to limit and measure the upper surfaces of the upper and lower rollers; The roller spacing measuring rod (230) is slidably connected to a sliding frame (231) inside; an elastic telescopic column (232) is fixedly connected to the top of the sliding frame (231); the telescopic end of the elastic telescopic column (232) is fixedly connected to a fixed frame (233); a locking hole (234) is processed at the bottom of the sliding frame (231); a locking groove is processed on the spacing limiting rod (500); the spacing limiting rod (500) is fixed to the sliding frame (231) by bolts between the locking hole (234) and the locking groove; and a bolt is also processed at the bottom of the fixed frame (233) for fixing the spacing limiting rod (500) therein.

2. A short stress rolling mill roll gap adjustment mechanism according to claim 1, characterized in that: The length of the second roller measuring rod (220) is greater than the length of the first roller measuring rod (210).

3. A short stress rolling mill roll gap adjustment mechanism according to claim 2, characterized in that: Grooves are also machined on both sides of the first roller measuring rod (210) and the second roller measuring rod (220) for limiting the position of the wing plate of the movable slider (211); The inner diameters of the through hole (213) and the extension frame (212) are equal to the outer diameter of the roller diameter limiting rod (400).

4. A short stress rolling mill roll gap adjustment mechanism according to claim 3, characterized in that: A movable slider (211) is fixedly connected to a fixed connecting plate (302) on one side of the through hole (213), and another fixed connecting plate (302) is fixedly connected to the side of the fixed hole (216) facing away from the rolling mill frame (100). Rotating connecting rods (301) are rotatably connected to the two fixed connecting plates (302). The two rotating connecting rods (301) have the same length and are not located in the same plane. A rotating shaft (304) is fixedly connected to one end of the rotating connecting rod (301). The two rotating shafts (304) are rotatably connected to the same central positioning shaft (300), and a positioning pin (303) is processed at the central axis of the central positioning shaft (300).

5. The short stress rolling mill roll gap adjustment mechanism according to claim 1, characterized in that: Grooves are machined on both sides of the roller spacing measuring rod (230) for limiting the position of the wing plate of the sliding frame (231).

6. A short stress rolling mill roll gap adjustment mechanism according to claim 5, characterized in that: A fixed connecting plate (302) is fixedly connected to the side of the fixed frame (233) facing away from the rolling mill frame (100), and another fixed connecting plate (302) is fixedly connected to the side of the sliding frame (231) facing away from the rolling mill frame (100). Rotating connecting rods (301) are rotatably connected to the two fixed connecting plates (302). The two rotating connecting rods (301) have the same length and are not located in the same plane. A rotating shaft (304) is fixedly connected to one end of the rotating connecting rod (301). The two rotating shafts (304) are rotatably connected to the same central positioning shaft (300). A positioning pin (303) is processed at the central axis of the central positioning shaft (300).

7. The short stress rolling mill roll gap adjustment mechanism according to claim 1, characterized in that: The width of the roller diameter limiting rod (400) is greater than the tooth pitch of the roller, and the width of the spacing limiting rod (500) is less than the tooth pitch of the roller.

8. A method for debugging a roll gap debugging mechanism of a short stress rolling mill, applied to a roll gap debugging mechanism of a short stress rolling mill as claimed in claim 1, characterized in that: include: S1: First, two fixed cover plates (101) are mounted on a rolling mill frame (100), and corresponding measurement positions are selected to mount three support cover plates (102) on the fixed cover plates (101), and then a first roll measuring rod (210), a second roll measuring rod (220), and a roll spacing measuring rod (230) are mounted on corresponding support cover plates (102); S2: The roller diameter limiting rod (400) is respectively installed on the upper and lower sides of the upper and lower rollers through the first roller measuring rod (210) and the second roller measuring rod (220), and the spacing limiting rod (500) is respectively installed on the upper and lower sides of the upper and lower rollers through the roller spacing measuring rod (230). After the installation is completed and the mechanism is stable, the roller diameter limiting rod (400) and the spacing limiting rod (500) are fixed by bolts; S3: reading and recording the roller diameters of the upper and lower rollers, the center axis distances of the upper and lower rollers, the distance between the upper and lower rollers, the height of the upper surface of the spacing limit rod (500) located below the upper roller, and the height of the lower surface of the spacing limit rod (500) located above the lower roller; S4: Start the press-down device to adjust the roll gap. After the adjustment is completed, repeat S3 and compare the adjustment data of the press-down device. If the difference is greater than 0.2 mm, the press-down device needs to be repaired and maintained.

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