Roll gap debugging mechanism and debugging method for short-stress rolling mill

Abstract

The invention relates to the technical field of short-stress rolling mills, in particular to a short-stress rolling mill roll gap debugging mechanism and method.The short-stress rolling mill roll gap debugging mechanism comprises a rolling mill rack, a fixed cover plate fixed to the upper portion of the rolling mill rack through bolts, a plurality of supporting cover plates fixed to the fixed cover plate through bolts and a roll interval measuring mechanism; the roller spacing measuring mechanism is used for measuring an actual change value of a roller gap, and the plurality of roller diameter limiting rods and the plurality of spacing limiting rods are used for supporting and measuring rollers; the roller spacing measuring mechanism comprises an upper roller measuring mechanism, a lower roller measuring mechanism and a roller spacing measuring mechanism; the height of the rolling roll gap of the short-stress rolling mill can be determined through three kinds of measurement, meanwhile, measurement can be carried out when the two rolls move up and down to adjust the roll gap, and therefore whether the roll gap adjusting value is the same as the actual roll gap adjusting value or not is determined, and whether the internal structure of a screw-down device of the short-stress rolling mill is damaged or not is further determined.

Description

Technical Field

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

[0002] With the development of the steel industry and the improvement of users' requirements for steel quality, rolling mills have higher and higher requirements for rolling mills. Short stress line rolling mills have high rigidity, high product precision, light equipment weight, and simple operation. In order to achieve the goal of high production, high quality and low consumption, modern small bar, wire and narrow strip steel rolling workshops generally use high rigidity short stress line rolling mills. This type of machine has become the mainstream model configured by steel companies around the world with its advantages of high frame rigidity, high product precision, light equipment weight, symmetrical roll gap adjustment, simple operation, reliable work, and low investment.

[0003] The short stress line mill is composed of a frame, rollers, transmission device, adjustment device and lubrication system, and each part works together to realize the rolling process. The frame provides a stable foundation, the rollers complete the rolling task, the transmission device transmits power, the adjustment device ensures the rolling accuracy, and the lubrication system reduces wear. Among them, the transmission device is the power source of the short stress line mill. It transmits the power of the motor to the rollers through equipment such as reducers and couplings, and drives the rollers to rotate. During the power transmission process, the main function of the pull rod device is to transmit the power of the pressing device to the copper nut, which is installed in the bearing seat, and then drives the bearing seat to rise and fall, and finally realizes the adjustment of the roller gap.

[0004] The press-down device mainly drives the pull rod to rotate through the worm gear, worm and gear to achieve synchronous adjustment of the roll gap up and down. It can adjust the operating side and the transmission side at the same time, or disconnect the connecting shaft for single-side adjustment. The entire press-down mechanism can remotely and accurately adjust the roll gap under the joint action of mechanics, hydraulics and electrical appliances.

[0005] After long-term use, the worm wheel, worm and gear in the press-down device of the short stress rolling mill will be worn. What's worse, the bearing will be damaged. In this case, when the roll gap of the short stress rolling mill is adjusted by the press-down device, the adjusted size will be inappropriate, affecting the quality of the steel wire.

[0006] The purpose of the invention of this application is to solve the problem that the roll gap adjustment size of a short stress rolling mill is prone to error 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 short stress rolling mill roll gap debugging mechanism and debugging method, which can effectively solve the existing problems.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a short stress rolling mill roll gap debugging mechanism, comprising a rolling mill frame, a fixed cover plate fixed on the top of the rolling mill frame by bolts, a plurality of supporting cover plates fixed on the fixed cover plate by bolts, and a roll spacing measuring mechanism, the roll spacing measuring mechanism is used to measure the actual change value of the roll gap, and a plurality of roll diameter limiting rods and a plurality of spacing limiting rods are used to support and measure the rolls; the roll spacing measuring mechanism comprises an upper roll measuring mechanism, a lower roll measuring mechanism and a roll spacing measuring mechanism, the upper roll measuring mechanism is used to measure the roll diameter of the roll located above, and the lower roll measuring mechanism is used to measure the roll diameter of the roll located below , the roller spacing measuring mechanism measures the distance between the two rollers; the upper roller measuring mechanism includes two first roller measuring rods, the tops of the two first roller measuring rods are fixedly connected to a supporting cover plate, and scale lines are arranged on both sides of the first roller measuring rods; the lower roller measuring mechanism includes two second roller measuring rods, the tops of the two second roller measuring rods are fixedly connected to another supporting cover plate, and scale lines are arranged on both sides of the second roller measuring rods; the roller spacing measuring mechanism includes two roller spacing measuring rods, the tops of the two roller spacing measuring rods are fixedly connected to another supporting cover plate by bolts, and scale lines are arranged on both sides of the roller spacing measuring rods.

[0009] Furthermore, the length of the second roller measuring rod is greater than the length of the first roller measuring rod.

[0010] Furthermore, the first roller measuring rod and the second roller measuring rod are both slidably connected with a movable slider; a through hole is processed at the bottom of the movable slider on the side facing away from the rolling mill frame, and an extension frame is processed at the bottom of the movable slider on the side facing the rolling mill frame; a telescopic spring is fixedly connected inside the movable slider, and one end of the telescopic spring is fixedly connected to the telescopic connecting frame.

[0011] Furthermore, grooves are processed on both sides of the first roller measuring rod and the second roller measuring rod for limiting the wing plate of the movable slider; the inner diameter of the through hole and the extension frame is equal to the outer diameter of the roller diameter limiting rod; a fixing hole is processed at the bottom of the telescopic connecting frame, and a fixing groove is processed on the roller diameter limiting rod, and the telescopic connecting frame and the roller diameter limiting rod are fixed by bolts between the fixing hole and the fixing groove.

[0012] Furthermore, the movable slider is fixedly connected to a fixed connecting plate on one side of the through hole, and another fixed connecting plate is fixedly connected to the side of the fixed hole facing away from the rolling mill frame. The two fixed connecting plates are rotatably connected to rotating connecting rods. 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. The two rotating shafts are rotatably connected to the same center positioning shaft, and a positioning pin is processed at the center axis of the center positioning shaft.

[0013] Furthermore, a sliding frame is slidably connected inside the roller 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 the fixed frame.

[0014] Furthermore, grooves are processed on both sides of the roller spacing measuring rod for limiting the wing plate of the sliding frame; a positioning hole is processed at the bottom of the sliding frame, and a positioning groove is processed on the spacing limiting rod. The spacing limiting rod is fixed to the sliding frame by bolts between the positioning hole and the positioning groove.

[0015] Furthermore, the fixed frame is fixedly connected to a fixed connecting plate on the side facing away from the rolling mill frame, and the sliding frame is fixedly connected to another fixed connecting plate on the side facing away from the rolling mill frame. The two fixed connecting plates are rotatably connected to rotating connecting rods. 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. The two rotating shafts are rotatably connected to the same center positioning shaft, and a positioning pin is processed at the center axis of the center positioning shaft.

[0016] Furthermore, the width of the roller diameter limiting rod is greater than the tooth pitch of the roller, and the width of the spacing limiting rod is less than the tooth pitch of the roller.

[0017] A debugging method for a short stress rolling mill roll gap debugging mechanism, comprising: S1: First, two fixed covers are installed on the rolling mill frame, and corresponding measuring positions are selected to install three supporting covers on the fixed covers, and then the first roll measuring rod, the second roll measuring rod, and the roll spacing measuring rod are installed on the corresponding supporting covers; S2: The roller diameter limiting rod is installed on the upper and lower sides of the upper and lower rollers through the first roller measuring rod and the second roller measuring rod, and the spacing limiting rod is installed on the upper and lower sides of the upper and lower rollers through the roller spacing measuring rod. After the installation is completed, wait for the mechanism to be stable, and fix the roller diameter limiting rod and the spacing limiting rod with bolts; S3: Read and record the roller diameters of the upper and lower rollers, the center wheelbase 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 below the upper roller, and the height of the lower surface of the spacing limit rod 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.

[0018] Beneficial Effects Compared with the known public technology, the technical solution provided by the present invention has the following beneficial effects: 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. The above three measurements can determine the height of the rolling roll gap of the short stress rolling mill. At the same time, the two rolls can 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 then determine whether the internal structure of the press-down device of the short stress rolling mill is damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is an overall schematic diagram of the roll gap debugging mechanism of the short stress rolling mill of the present invention; Figure 2 It is a structural schematic diagram of the first roller measuring rod of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the first roller measuring rod of the present invention; Figure 4 It is a structural schematic diagram of the center positioning shaft of the present invention; Figure 5 It is a structural schematic diagram of the roller spacing measuring rod of the present invention; Figure 6 It is a schematic diagram of the exploded structure of the roller spacing measuring rod of the present invention; Figure 7 It is a schematic diagram of the structure of the roller diameter limiting rod and the spacing limiting rod on the upper and lower rollers of the present invention; Figure 8 It is a schematic diagram of the force when the roller diameter limiting rod of the present invention contacts the upper and lower rollers; Fig. 9 It is a schematic diagram of the force when the spacing limiting rod of the present invention contacts the upper and lower rollers.

[0021] Reference numerals 100- rolling mill frame; 101- fixed cover plate; 102- supporting cover plate; 200-roller spacing measuring mechanism; 210-first roller measuring rod; 211-movable slider; 212-extension frame; 213-through hole; 214-telescopic spring; 215-telescopic connecting frame; 216-fixing hole; 220-second roller measuring rod; 230-roller spacing measuring rod; 231-sliding frame; 232-elastic telescopic column; 233-fixed frame; 234-positioning hole; 300-center positioning shaft; 301-rotating connecting rod; 302-fixed connecting plate; 303-positioning needle; 304-rotating shaft; 400-Roller diameter limiting rod; 500-spacing limit rod. DETAILED DESCRIPTION

[0022] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0023] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0024] 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 or interdependence of the functions performed by these devices, modules or units.

[0025] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0026] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0027] The present invention will be further described below in conjunction with the embodiments.

[0028] Example: A short stress rolling mill roll gap adjustment mechanism, such as Figure 1-6As shown, it includes a rolling mill frame 100, a fixed cover plate 101 fixed on the top of the rolling mill frame 100 by bolts, a plurality of supporting cover plates 102 fixed on the fixed cover plate 101 by bolts, and also includes a roll spacing measuring mechanism 200, the roll spacing measuring mechanism 200 is used to measure the actual change value of the roll gap, and a plurality of roll diameter limiting rods 400 and a plurality of spacing limiting rods 500, which are used to support the measuring rolls; the roll spacing measuring mechanism 200 includes an upper roll measuring mechanism, a lower roll measuring mechanism and a roll spacing measuring mechanism. It is worth noting that the upper roll measuring mechanism is used to measure the roll diameter of the roll located above, and the lower roll measuring mechanism is used to measure the roll diameter of the roll located above. The mechanism is used to measure the roller diameter of the roller located below, and the roller interval measuring mechanism measures the maximum distance and the minimum distance between the two rollers. The height of the rolling roll gap of the short stress rolling mill can be determined through the above three measurements. At the same time, the two rollers can be measured when the roll gap is adjusted by moving 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 pressing device of the short stress rolling mill is in good working condition. If they are different, the pressing device needs to be repaired and maintained; it should be noted that the height in this article is based on the lower surface of the support cover plate 102 as the starting point and extends downward as the height distance; In some schemes, the upper roller measuring mechanism includes two first roller measuring rods 210, the tops of the two first roller measuring rods 210 are fixedly connected to a support cover plate 102, and scale lines are set on both sides of the first roller measuring rods 210. The lower roller measuring mechanism includes two second roller measuring rods 220, the tops of the two second roller measuring rods 220 are fixedly connected to another support cover plate 102, and scale lines are set on both sides of the second roller measuring rods 220. The length of the second roller measuring rod 220 is greater than the length of the first roller measuring rod 210. Specifically, the first roller measuring rod 210 and the second roller measuring rod 220 are both slidably connected to the inside of the moving slider 211, and the first roller measuring rod 210 and the second roller measuring rod 220 are also machined with grooves on both sides for limiting the wing plate of the moving slider 211 to prevent the moving slider 211 from colliding with the first roller measuring rod 210 and the second roller measuring rod 220. The movable slider 211 is provided with a through hole 213 at the bottom of the side facing away from the rolling mill frame 100, and an extension frame 212 is provided at the bottom of the side facing the rolling mill frame 100. The inner diameter of the through hole 213 and the extension frame 212 is equal to the outer diameter of the roller diameter limiting rod 400. It is worth noting that the extension frame 212 is also provided with bolts, which can fix the roller diameter limiting rod 400 passing through it. The roller diameter limiting rod 400 on the movable slider 211 is used to perform limit measurement on the upper surface of the upper and lower rollers; the movable slider 211 is fixedly connected with a telescopic spring 214 inside, and one end of the telescopic spring 214 is fixedly connected with 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. The fixing hole 216 and the fixing groove are fixed by bolts to fix the telescopic connecting frame 215 and the roller diameter limiting rod 400. It is worth noting that Figure 8 As shown, the overall gravity of the moving slider 211 on the first roller measuring rod 210 is G1, which applies a downward force to the roller diameter limiting rod 400 located above the upper roller to ensure that it is in close contact with the upper roller. Similarly, the overall gravity G2 of the moving slider 211 on the second roller measuring rod 220 applies a force to the lower roller to ensure that it is in close contact with the lower roller. The telescopic spring 214 on the first roller measuring rod 210 applies an upward elastic force F1 to the telescopic connecting frame 215 due to its extension. An upward force is applied to the roller diameter limiting rod 400 located below the upper roller to ensure that it is in close contact with the upper roller. Similarly, the second roller measuring rod 220 is also in close contact with the lower roller. Through the close contact of multiple roller diameter limiting rods 400 with the upper and lower rollers, and the height of the roller diameter limiting rods 400 is measured by the first roller measuring rod 210 and the second roller measuring rod 220, the roller diameters of the two rollers can be obtained, and the wheelbase of the center axes of the two rollers can also be obtained. Furthermore, the roller spacing measuring mechanism includes two roller spacing measuring rods 230, the tops of the two roller spacing measuring rods 230 are fixedly connected to another support cover plate 102 by bolts, scale lines are set on both sides of the roller spacing measuring rods 230, and the roller spacing measuring rods 230 are slidably connected to the sliding frame 231. The roller spacing measuring rods 230 are machined with grooves on both sides to limit the wing plates of the sliding frame 231 to prevent the sliding frame 231 from being separated from the roller spacing measuring rods 230. The top of the sliding frame 231 is fixed. The elastic telescopic column 232 is connected, and the telescopic end of the elastic telescopic column 232 is fixedly connected to the fixed frame 233. The inner diameter of the fixed frame 233 is equal to the outer diameter of the spacing limiting rod 500. It is worth noting that the bottom of the fixed frame 233 is also processed with bolts for fixing the spacing limiting rod 500 therein. The bottom of the sliding frame 231 is processed with a positioning hole 234, and the spacing limiting rod 500 is processed with a positioning groove. The spacing limiting rod 500 is fixed to the sliding frame 231 by bolts between the positioning hole 234 and the positioning groove. It should be noted that, if Fig. 9 As shown, the spacing limit rod 500 located below the upper roller passes through the fixed frame 233, and the spacing limit rod 500 located above the lower roller is fixed to the sliding frame 231 by bolts passing through the positioning holes 234. At this time, the overall gravity G3 of the sliding frame 231 applies a downward force to the spacing limit rod 500 located above the lower roller, so that it is tightly connected with the lower roller, and the elastic telescopic column 232 has an upward elastic force on the fixed frame 233 because it is in an extended state. Through the transmission of force, the spacing limit rod 500 located below the upper roller is closely connected with the upper roller, so that the staff can measure the spacing between the two rollers through the spacing limit rod 500; In addition, if Figure 7 As shown, 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.

[0029] In some schemes, in order to facilitate the staff to quickly read the height of the center axis of the roller, the movable slider 211 is fixedly connected to a fixed connecting plate 302 on one side of the through hole 213, and the fixed hole 216 is fixedly connected to another fixed connecting plate 302 on the side facing away from the rolling mill frame 100. The two fixed connecting plates 302 are rotatably connected to a rotating connecting rod 301. 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. The two rotating shafts 304 are rotatably connected to the same center positioning shaft. 300, a positioning pin 303 is processed at the center axis of the center positioning shaft 300. It is worth noting that the two fixed connecting plates 302 are respectively on the same plane with the corresponding roller diameter limiting rods 400, and 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 center positioning shaft 300 is always in the middle position of the two fixed connecting plates 302, and the height of the center axis of the roller can be quickly read through the positioning pin 303, thereby improving work efficiency; Furthermore, when the diameters of the upper and lower rollers are the same, in order to facilitate the staff to quickly read the height of the rolling roll gap, two fixed connecting plates 302 are respectively set on one side of the fixed frame 233 and one side of the sliding frame 231. At this time, the scale line on the roller spacing measuring rod 230 corresponding to the positioning needle 303 is the height of the rolling roll gap.

[0030] When using this embodiment, the staff first installs the two fixed cover plates 101 on the rolling mill frame 100, and selects the corresponding measurement positions to install the three support cover plates 102 on the fixed cover plates 101, and 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 on the upper surface of the upper roll, and the through hole 213 is used to measure the roll spacing between the rolls. 213, the roller diameter limiting rod 400 is inserted therein 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 roller. Then the roller diameter limiting rod 400 is inserted therein and is located below the upper roller and contacts the bottom of the other telescopic connecting frame 215. After the roller diameter limiting rod 400 is stable, the extension frame 212 and the fixing hole 216 are fixed by bolts. At this time, the upper roller and the first roller measuring rod 21 0 and other structures form a whole. In the subsequent roll gap adjustment, the upper roll will drive the whole to move when it moves. The above method can also be used on the second roll measuring rod 220. The staff pulls up the sliding frame 231 so that the lower surface of the sliding frame 231 is located above the lower roll. Then, the spacing limit rod 500 passes through the inside of the sliding frame 231 to contact the other 21 and fix it thereon through bolts and the positioning holes 234. In the natural state of the elastic telescopic column 232, the fixed frame 233 and the sliding frame 231 are fixed to each other. The lower surface of the movable frame 231 is far inward. At this time, the staff needs to pull the fixed frame 233 to extend the elastic telescopic column 232 until the upper surface of the fixed frame 233 is located below the upper roller. At this time, the staff passes the spacing limit rod 500 through the fixed frame 233 and connects it to another fixed frame 233. At this time, the spacing limit rod 500 in the fixed frame 233 is fixed by bolts. At this time, the elastic telescopic column 232 has an elastic force to shrink upward, so that the spacing limit rod 500 is in close contact with the roller; Readings: the lower surface of the roller diameter limiting rod 400 located above the upper roller, the upper surface of the roller diameter limiting rod 400 located below the upper roller, the difference between the two is the roller diameter of the upper roller, the height of the center axis is the average of the two, and is also the height of the corresponding positioning needle 303; the lower surface of the roller diameter limiting rod 400 located above the lower roller, the upper surface of the roller diameter limiting rod 400 located below the lower roller, the difference between the two is the roller diameter, the height of the center axis is the average of the two, and is also the height of the corresponding positioning needle 303; the upper surface of the spacing limiting rod 500 located below the upper roller, the lower surface of the spacing limiting rod 500 located above the lower roller, the difference between the two is the distance between the upper and lower rollers, when the roller diameters of the upper and lower rollers are the same, the reading corresponding to the positioning needle 303 on the roller spacing measuring rod 230 is the rolling roller gap; When the press-down device is started to adjust the roll gap, the upper and lower rollers move vertically, carrying the corresponding whole with them, so that the two spacing limit rods 500 move synchronously. The height difference before and after the movement of the spacing limit rods 500 is the actual roll gap adjustment value, which is then compared with the adjustment data of the press-down device. If the difference is greater than 0.2 mm, the internal parts of the press-down device are damaged and need repair and maintenance.

[0031] A debugging method for a short stress rolling mill roll gap debugging mechanism, comprising: S1: First, two fixed cover plates 101 are installed on the rolling mill frame 100, and three supporting cover plates 102 are installed on the fixed cover plates 101 at corresponding measuring positions, and then the first roll measuring rod 210, the second roll measuring rod 220, and the roll spacing measuring rod 230 are installed on the corresponding supporting cover plates 102; S2: The roller diameter limiting rod 400 is 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 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: Read and record the roller diameters of the upper and lower rollers, the center wheelbase 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 below the upper roller, and the height of the lower surface of the spacing limit rod 500 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.

[0032] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to 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).

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: The first roller measuring rod (210) and the second roller measuring rod (220) are both slidably connected with a movable slider inside; A through hole (213) is processed on the bottom of a side of the movable slider (211) facing away from the rolling mill frame (100), and an extension frame (212) is processed on the bottom of a side of the movable slider (211) facing the rolling mill frame (100); A telescopic spring (214) is fixedly connected inside the movable slider (211), and one end of the telescopic spring (214) is fixedly connected to a telescopic connecting frame (215).

4. A short stress rolling mill roll gap adjustment mechanism according to claim 3, 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); A fixing hole (216) is processed on the bottom of the telescopic connecting frame (215), and a fixing groove is processed on the roller diameter limiting rod (400). Bolts are used between the fixing hole (216) and the fixing groove to fix the telescopic connecting frame (215) and the roller diameter limiting rod (400).

5. A short stress rolling mill roll gap adjustment mechanism according to claim 4, 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).

6. The short stress rolling mill roll gap adjustment mechanism according to claim 1, characterized in that: A sliding frame (231) is slidably connected inside the roller spacing measuring rod (230); An elastic telescopic column (232) is fixedly connected to the top of the sliding frame (231), and a telescopic end of the elastic telescopic column (232) is fixedly connected to a fixed frame (233).

7. A short stress rolling mill roll gap adjustment mechanism according to claim 6, 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); A locking hole (234) is processed at the bottom of the sliding frame (231), and a locking groove is processed on the spacing limiting rod (500). Bolts are used between the locking hole (234) and the locking groove to fix the spacing limiting rod (500) to the sliding frame (231).

8. The short stress rolling mill roll gap adjustment mechanism according to claim 7, 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).

9. 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.

10. 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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