An online measuring device for steel billet thickness

Abstract

The utility model relates to an online measuring device for the thickness of a steel billet, comprising a gantry bracket, a base, a connecting sleeve, a rotating shaft, a cotter pin, a pointer, a dial, a connecting plate, a swing rod, a locking nut, a roller base, a roller, a pin shaft, a cotter pin, and a camera. The swing rod roller rolls in contact with the steel billet being transported before rolling, forming a certain swing angle. The swing angles of the swing rod are different for steel billets of different thicknesses. The thickness of the steel billet is judged by the swing angle of the swing rod. The monitoring screen of the operating table can display the swing rod and the scale indication in real time, so as to realize the online rapid detection of the steel billet before rolling. At the same time, the device can also open a hole behind the dial to add a proximity switch and connect the system, judge the thickness by the signal, and issue an abnormal alarm or interlock the parking. The device has the advantages of simple structure, convenient use, easy processing and manufacturing, high detection efficiency, little influence by working conditions, and wide applicability, and can effectively solve the problem that the thickness of the steel billet before rolling cannot be detected online efficiently.

Description

Technical Field

[0001] This patent application belongs to the technical field of wide and thick rolling detection equipment, and relates to a thickness detection device, and more specifically, to an online billet thickness measurement device. Background Art

[0002] In the process of hot rolling of wide and thick plates, the raw materials for rolling are the steel billets delivered by the continuous casting workshop, and the thickness of the steel billets is the fixed size designed for continuous casting, such as 180mm, 230mm, 260mm, etc. After receiving the steel billets, they need to be heated in the furnace according to the steel billet information, and after heating, they are taken out of the furnace and the rolling parameters such as the rolling mill roll gap are automatically set according to the steel billet information to roll the steel billets.

[0003] Due to the production thickness error of the raw material billet itself, incorrect billet information, confusion in entering and leaving the furnace, bugs in the secondary system, etc., the actual thickness of the billet does not match the system information before rolling, which makes the rolling roll gap setting inconsistent with the actual thickness of the billet. If the set roll gap is smaller than the billet thickness (such as the rolling information thickness is 230mm, and the actual thickness is 260mm), after rolling, it will cause serious equipment accidents such as roll breakage, main shaft breakage, and main transmission damage, which will seriously affect the normal production rhythm.

[0004] At present, there is no good rapid detection solution in the industry. The temperature of the steel billet is high, the water vapor is large, and the iron oxide powder is high. The on-site working conditions are complex. The detection system composed of drive mechanisms, actuators, electronic detection components, etc. has poor stability and high cost. Therefore, it is usually judged by the operator's experience, or the thickness of the steel billet before rolling is re-measured manually. The probability of error in manual experience judgment is high. Due to the high temperature of the steel billet, manual measurement has great safety hazards. At the same time, the measurement of steel billet thickness affects the normal production rhythm. 600-800 steel billets are rolled every day, and the labor intensity of employees is high. In addition, manual measurement and judgment of each block is not an effective solution for events with a small probability of thickness error and a high risk of hidden danger. Therefore, a new technical solution is urgently needed to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an online measuring device for the thickness of steel billets. The pendulum roller contacts the steel billets during the conveying process. The pendulum swings at different angles for steel billets of different thicknesses, corresponding to different indicating scales. The thickness of the steel billets can be judged by the indicating scales. At the same time, the operator can view the indication of the pendulum and the scales in real time through the monitoring screen. A proximity switch can also be added behind the dial and connected to the system. The thickness can be judged by the signal. If the signal is abnormal, the interlock alarm or the car stops. The utility model has the advantages of simple structure, convenient use, easy processing and manufacturing, and high detection efficiency.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is:

[0007] An online measuring device for the thickness of a steel billet includes a gantry bracket, a base, a connecting sleeve, a rotating shaft, a split pin, a pointer, a dial, a connecting plate, a swing rod, a locking nut, a roller base, a roller, a pin shaft, a split pin, a camera, etc. The gantry bracket is welded by channel steel and a rectangular steel plate, and the base is composed of a rectangular plate, a channel steel, and an angle steel. The base is installed above the gantry, and can also be installed above the outlet of a descaling machine or other equipment on a roller table by welding.

[0008] The connecting sleeve is installed in the through hole of the base sleeve. The rotating shaft is a long shaft with a circular boss. The outer diameter of the shaft end is consistent with the inner diameter of the connecting sleeve. The rotating shaft cooperates with the connecting sleeve and is constrained by a cotter pin.

[0009] The pointer is connected to the rotating shaft through threads. The dial is set as a 1 / 4 disk and is provided with scale indicator lines. It is installed above the angle steel of the base. The center of the dial coincides with the center line of the rotating shaft.

[0010] The connecting plate is composed of a round tube and a rectangular plate. The inner diameter of the round tube is consistent with the outer diameter of the shaft end. The connecting plate cooperates with the shaft sleeve and is fixedly connected by bolts.

[0011] The swing rod is composed of a rectangular plate and a round tube. The swing rod and the connecting plate are connected by bolts and locking nuts, and the relative positions of the two are adjustable.

[0012] The roller base is connected to the rocker arm through bolts, and the roller is connected and constrained by a pin shaft and a cotter pin. The diameter of the pin shaft end is slightly smaller than the inner diameter of the roller through hole. A guide fillet is provided on one side of the roller base, and its radius is slightly smaller than the roller radius.

[0013] There is a circulating cooling water pipe inside the pendulum arm, and the roller is cooled by the external cooling water pipe on the pendulum arm to avoid deformation of the pendulum arm and jamming of the roller due to high temperature, which will affect the detection accuracy and effect.

[0014] The above device is installed on the gantry bracket above the front roller of the roughing mill, or above the outlet of the descaling machine or above other equipment on the roller. The camera is installed in the direction facing the dial, and the operating console can view the swing arm and scale indication in real time through the monitoring screen.

[0015] At the same time, in this device, a hole can be opened behind the dial to add a proximity switch and connect it to an operating table or system. The proximity switch cooperates with the pointer to detect and judge the indication scale through the pointer rotation signal, and then judge the thickness of the steel billet. The abnormal signal interlock alarm or stop can be used to realize the steel plate thickness detection.

[0016] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are:

[0017] This device uses the swing rod roller to roll with the steel billet being conveyed, and determines the thickness of the steel billet by the swing angle of the swing rod, so as to efficiently detect the thickness of the steel billet and effectively avoid major equipment accidents caused by thickness errors. This device has the advantages of simple structure, convenient use, easy processing and manufacturing, high detection efficiency, little influence by working conditions, and wide applicability, and can effectively solve the problem that the thickness of the steel billet cannot be efficiently detected before rolling.

[0018] The economic and social benefits are remarkable. In terms of direct economic benefits, the use of this patented technology can reduce the time of major accidents caused by thickness information errors by about 20 hours. The economic benefits created by saving construction time per year are: 20h×400 yuan / ton (ton steel efficiency increase)*120 tons (hourly output) = 960,000 yuan / year. At the same time, it effectively improves the rolling rhythm and ensures stable operation of the equipment.

[0019] Social benefits: The successful application of this utility model effectively solves the problem of inefficient detection of billet thickness before rolling, reduces the labor intensity of employees, improves detection accuracy, and provides successful experience worthy of reference for similar production across the country, with huge social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the gantry support;

[0022] Figure 3 It is a schematic diagram of the structure of the base;

[0023] Figure 4 It is a structural schematic diagram of the connecting sleeve;

[0024] Figure 5 It is a structural schematic diagram of the rotating shaft;

[0025] Figure 6 It is a schematic diagram of the structure of the pointer;

[0026] Figure 7 It is a schematic diagram of the structure of the dial;

[0027] Figure 8 It is a structural schematic diagram of the connecting plate;

[0028] Fig. 9 It is a schematic diagram of the structure of the pendulum;

[0029] Fig.10 It is a schematic diagram of the structure of the locking nut;

[0030] Fig.11 It is a structural schematic diagram of the roller base;

[0031] Fig.12It is a schematic diagram of the structure of the pin shaft;

[0032] Fig.13 It is a schematic diagram of the structure of the roller;

[0033] Fig.14 It is a structural schematic diagram of the utility model installed on a gantry bracket;

[0034] Fig.15 It is a schematic diagram of the application of the utility model;

[0035] Fig.16 It is an enlarged schematic diagram of the application of the utility model.

[0036] The markings in the figure are:

[0037] 00-Roller table; 01-Descaling machine; 02-Roughing mill; 03-Steel billet;

[0038] 1-gantry bracket, 1001-channel steel Ⅰ, 1002-rectangular steel plate, 1003-first bolt through hole, 1004-second bolt through hole; 2-base, 21-rectangular plate, 22-channel steel Ⅱ, 23-angle steel, 24-connecting bolts and nuts, 25-shaft sleeve through hole, 26-bolt through hole; 3-connecting sleeve; 4-rotating shaft, 41-first through hole, 42-internal thread through hole, 43-pin hole Ⅰ; 5-first cotter pin; 6-pointer, 61- External thread; 7-dial, 71-scale indicator line; 8-connecting plate, 81-second through hole, 82-straight slot; 9-rocker, 91-circular through hole I, 92-circular through hole II, 93-water inlet pipe, 94-water return pipe, 95-external cooling water pipe; 10-locking nut; 11-roller base, 111-circular through hole, 112-pin hole II; 12-roller, 121-through hole; 13-pin shaft; 14-second cotter pin; 15-camera. DETAILED DESCRIPTION

[0039] The utility model is further described in detail below in conjunction with the embodiments.

[0040] An online measuring device for the thickness of a steel billet, such as Figure 1-Figure 14As shown, it includes a gantry bracket 1, a base 2 installed above the gantry bracket 1, a connecting sleeve 3 installed on the base 2, a rotating shaft 4 installed in the connecting sleeve 3 and matched with the connecting sleeve 3, a first cotter pin 5 set on the connecting sleeve 3 and constrained by the rotating shaft 4, a pointer 6 threadedly connected to the rotating shaft 4, a dial 7 installed on the base 2, a scale indicator line 71 set on the dial 7, a connecting plate 8 matched with the shaft sleeve of the rotating shaft 4 and fixed to the middle of the rotating shaft 4 by bolts, a swing rod 9 movably connected to the bottom of the connecting plate 8, a roller base 11 located at the bottom of the swing rod 9, a roller 12 rotatably installed on the roller base 11, and a camera 15 installed in the direction opposite to the dial 7, the center of the dial 7 coincides with the center line of the rotating shaft 4, and the camera 15 is electrically connected to the operating table.

[0041] The gantry support 1 includes a U-shaped or gate-shaped channel steel II 1001 and a rectangular steel plate 1002, which are welded together. The four corners of the rectangular steel plate 1002 are provided with first bolt through holes 1003 for the foundation, and the middle of the upper channel steel II 1001 is provided with a second bolt through hole 1004.

[0042] The base 2 is composed of a rectangular plate 21 and two sets of base mechanisms. Each set of base mechanisms includes a channel steel Ⅰ 22 and an angle steel 23. The rectangular plate 21 and the two sets of channel steel Ⅰ 22 and the two sets of angle steel 23 are connected by welding. Figure 3 Taking a set of base mechanism as an example, the channel steel Ⅰ22 is vertically arranged on the rectangular plate 21, and a bolt through hole 26 is provided on one side of the rectangular plate 21. The two channel steels Ⅰ22 can also be vertically connected to the angle steel 23 through connecting bolts and nuts 24. The angle steel 23 is provided with a shaft sleeve through hole 25. Bolt through holes 26 are provided on both sides of the rectangular plate 21. The connecting sleeve 3 is installed in the two shaft sleeve through holes 25 of the base 2, and its outer diameter is consistent with the inner diameter of the shaft sleeve through hole 25 of the base 2. The two sets of bolt through holes 26 are respectively located on both sides of the rectangular plate 21, and their size and spacing correspond to the bolt through holes 104 of the gantry bracket 1.

[0043] The base 2 is installed above the gantry bracket 1 and fixed by bolt connection. The base 2 can also be installed above the outlet of the descaling machine 01 or above other equipment on the roller table by welding connection.

[0044] The outer diameter of the connecting sleeve 3 is consistent with the inner diameter of the shaft sleeve through hole 25 of the base 2. The connecting sleeve 3 is installed in the shaft sleeve through hole 25 of the base 2 and connected by welding.

[0045] The rotating shaft 4 is a long shaft with a circular boss, with a first through hole 41 in the middle, an internal thread through hole 42 at the front end, and a pin hole I 43 at the rear end, and the internal thread through hole 42 is located on the circular boss. The outer diameter of the shaft end of the rotating shaft 4 is consistent with the inner diameter of the connecting sleeve, the rotating shaft 4 cooperates with the connecting sleeve 3 and is constrained by the first cotter pin 5, and a latch is provided on the pin hole I 43.

[0046] The pointer 6 is configured as a cylindrical structure as a whole, with a sharpened front end and an external thread 61 provided at the rear end. The external thread 61 of the pointer 6 is connected to the internal thread through hole 42 of the rotating shaft 4 through a thread.

[0047] The dial 7 is designed as a 1 / 4 disk and is provided with a scale indicator line 71 . The dial 7 is welded above the angle steel 23 of the base 2 , and the center of the dial 7 coincides with the center line of the rotating shaft 4 .

[0048] The connecting plate 8 is welded by a round tube and a rectangular plate, and the round tube and the rectangular plate are arranged in a T-shape. The inner diameter of the round tube is consistent with the outer diameter of the shaft end of the rotating shaft 4. The round tube is provided with a second through hole 81, and the rectangular plate is provided with a long straight slot 82. The size and position of the second through hole 81 are consistent with the first through hole 41 of the rotating shaft 4. The round tube of the connecting plate 8 is matched with the shaft sleeve of the rotating shaft 4 and is fixedly connected by bolts. The straight slot 82 of the rectangular plate is movably connected with the swing rod 9 through bolts and locking nuts 10.

[0049] The swing rod 9 is welded as a whole by a rectangular plate and a round tube, and the rectangular plate and the round tube are welded in a straight line. A plurality of circular through holes Ⅰ91 are provided on the rectangular plate, and the size of the circular through holes Ⅰ91 is consistent with the width of the straight slot 82 in the connecting plate 8. A plurality of circular through holes Ⅱ92 for installing the roller base 11 are provided below the round tube. The round tube of the swing rod 9 is in a closed state, and a water inlet pipe 93, a water return pipe 94, and an external cooling water pipe 95 are passed inside. The water inlet pipe 93 is connected to the water source of the cooling water, the water return pipe 94 is located above the round tube, and the external cooling water pipe 95 is located below the round tube and faces the roller 12. The roller 12 is cooled by the external cooling water pipe 95 on the swing rod 9. The swing rod 9 is connected to the bottom of the connecting plate 8 by bolts and locking nuts 10. The relative position of the swing rod 9 and the connecting plate 8 is adjustable to ensure that the swing rod can be quickly installed and adjusted in place.

[0050] A plurality of circular through holes 111 are provided above the roller base 11, which match the circular through hole Ⅱ92 of the rocker arm 9 and are connected by bolts. A pin hole Ⅱ112 for mounting the roller 12 is provided below the roller base 11. A guide fillet is provided on one side of the roller base 11, and the radius of the guide fillet is slightly smaller than the radius of the roller 12.

[0051] The roller 12 is provided with a through hole 121, in which a pin shaft 13 is installed. The pin shaft 13 is equipped with a second cotter pin 14. The outer diameter of the shaft end of the pin shaft 13 matches the pin hole II 112 of the roller base 11, and its size is slightly smaller than the inner diameter of the through hole 121 in the roller 12. The roller 12 is connected and constrained by the pin shaft 13 and the second cotter pin 14.

[0052] The pendulum rod 9 takes in water through a water inlet pipe 93 connected to a water source and returns water through a water return pipe 94, thereby realizing self-cooling of the pendulum rod 9; the small water outlet of the external cooling water pipe 95 can spray cooling water onto the roller 12 to cool it down, thereby avoiding deformation of the pendulum rod 9 and jamming of the roller 12 due to high temperature, which would affect the detection accuracy and effect.

[0053] The camera 15 is installed in the direction facing the dial 7, and the operating console can view the indication of the pendulum rod 9 and the scale indicator line 71 in real time through the monitoring screen.

[0054] like Figure 15-16 , is the overall effect diagram of the device in use. The device is installed on the gantry support 1, and is installed as a whole above the front roller table of the rough rolling mill 02, or installed just above the outlet of the descaling machine 01. During the transportation process in front of the roller table 00 in the rough rolling mill 02, the steel billet 03 before rolling rolls in contact with the roller 12 installed on the swing rod 9, so that the swing rod 9 forms a certain swing angle. The swing angle can be displayed by the pointer 6 and the dial 7. The steel billet 03 of different thicknesses corresponds to the swing angle of different thicknesses. The thickness of the steel billet 03 transported before rolling is judged by the scale indicator line 71, and is displayed in real time through the monitoring screen of the operating table, so as to realize the online rapid detection of the steel billet before rolling.

[0055] At the same time, in this device, a hole can be opened behind the dial 7 to add a proximity switch and electrically connect it to the operating table (or system). The operating table is already available, and the electrical connection between the proximity switch and the operating table is a conventional technology. The electrical connection between the camera 15 and the operating table is also a conventional technology, which will not be repeated. How to connect is not the main innovation of this case.

[0056] The proximity switch cooperates with the pointer 6, that is, the indication scale of the scale indicator line 71 is determined by the rotation signal detection of the pointer 6, and then the thickness of the steel billet is determined, and the steel plate thickness is detected by interlocking alarm or stopping through abnormal signal.

[0057] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. An online measuring device for billet thickness, characterized in that: The invention comprises a gantry support (1), a base (2) mounted on the gantry support (1), a connecting sleeve (3) mounted on the base (2), a rotating shaft (4) mounted in the connecting sleeve (3) and matched with the connecting sleeve (3), a first cotter pin (5) arranged on the connecting sleeve (3) and constrainedly matched with the rotating shaft (4), a pointer (6) threadedly connected with the rotating shaft (4), a dial (7) mounted on the base (2), a scale indicator line (71) arranged on the dial (7), a connecting plate (8) matched with the shaft sleeve of the rotating shaft (4) and fixedly connected to the middle of the rotating shaft (4), a swing rod (9) movably connected to the bottom of the connecting plate (8), a roller base (11) located at the bottom of the swing rod (9), a roller (12) rotatably mounted on the roller base (11), and a camera (15) mounted in a direction facing the dial (7), wherein the center of the dial (7) coincides with the center line of the rotating shaft (4), and the camera (15) is electrically connected to an operating table.

2. The on-line measuring device for billet thickness according to claim 1, characterized in that: The gantry bracket (1) comprises a U-shaped channel steel II (1001), a second bolt through hole (1004) arranged in the middle of the channel steel II (1001), a rectangular steel plate (1002) fixedly mounted on the bottom of the channel steel II (1001), and first bolt through holes (1003) arranged at the four corners of the rectangular steel plate (1002).

3. The on-line measuring device for billet thickness according to claim 2, characterized in that: The base (2) comprises a rectangular plate (21) and a base mechanism. The base mechanism comprises two sets, each set of the base mechanism comprises a bolt through hole (26) arranged on one side of the rectangular plate (21), a channel steel I (22) vertically arranged on the rectangular plate (21), an angle steel (23) vertically arranged on the channel steel I (22) via connecting bolts and nuts (24), and a shaft sleeve through hole (25) arranged on the angle steel (23). The connecting sleeve (3) is installed in the two shaft sleeve through holes (25) of the base (2), and its outer diameter is consistent with the inner diameter of the shaft sleeve through hole (25) of the base (2). The two sets of bolt through holes (26) are respectively located on both sides of the rectangular plate (21), and their sizes and spacings correspond to the second bolt through holes (1004) of the gantry bracket (1).

4. The on-line measuring device for billet thickness according to claim 3, characterized in that: The rotating shaft (4) is a long shaft with a circular boss at the front end, a first through hole (41) at the middle part, an internal threaded through hole (42) at the front end, and a pin hole I (43) at the rear end. The internal threaded through hole (42) is located on the circular boss. The outer diameter of the shaft end of the rotating shaft (4) is consistent with the inner diameter of the connecting sleeve (3). The rotating shaft (4) and the connecting sleeve (3) are matched and constrained by a first cotter pin (5). A latch is provided on the pin hole I (43).

5. The on-line measuring device for steel billet thickness according to claim 4, characterized in that: The pointer (6) is a cylindrical structure, with a sharpened front end and an external thread (61) at the rear end. The external thread (61) of the pointer (6) is connected to the internal thread through hole (42) of the rotating shaft (4). The dial (7) of the pointer (6) is a 1 / 4 disk, and the dial (7) is welded above the angle steel (23) of the base (2).

6. The on-line measuring device for billet thickness according to claim 4, characterized in that: The connecting plate (8) comprises a round tube and a rectangular plate arranged in a T-shape, the inner diameter of the round tube being consistent with the outer diameter of the shaft end of the rotating shaft (4), the round tube being provided with a second through hole (81), and the rectangular plate being provided with a long straight slot (82), the size and position of the second through hole (81) being consistent with the first through hole (41) of the rotating shaft (4), the round tube of the connecting plate (8) being matched with the shaft sleeve of the rotating shaft (4) and being fixedly connected by bolts; the straight slot (82) of the rectangular plate is movably connected with a swing rod (9) by bolts and a locking nut (10).

7. The on-line measuring device for billet thickness according to claim 6, characterized in that: The swing rod (9) comprises a straight rectangular plate and a round tube. The rectangular plate is provided with a plurality of circular through holes I (91). The size of the circular through holes I (91) is consistent with the width of the straight slot (82) in the connecting plate (8). The round tube is in a closed state. A plurality of circular through holes II (92) for mounting a roller base (11) are provided below the round tube. The inside of the round tube is connected with a water inlet pipe (93), a water return pipe (94), and an external cooling water pipe (95). The water inlet pipe (93) is connected to a cooling water source. The water return pipe (94) is located above the round tube. The external cooling water pipe (95) is located below the round tube and faces the roller (12). The roller (12) is cooled by the external cooling water pipe (95) on the swing rod (9). The swing rod (9) is connected to the bottom of the connecting plate (8) by bolts and locking nuts (10). The relative position of the swing rod (9) and the connecting plate (8) is adjustable.

8. The on-line measuring device for billet thickness according to claim 7, characterized in that: A plurality of circular through holes (111) are provided above the roller base (11), which match the circular through hole II (92) of the swing rod (9) and are connected by bolts; a pin hole II (112) for mounting the roller (12) is provided below the roller base (11); a guide fillet is provided on one side of the roller base (11), and the radius of the guide fillet is smaller than the radius of the roller (12).

9. The on-line measuring device for billet thickness according to claim 8, characterized in that: The roller (12) is provided with a through hole (121), a pin shaft (13) is installed in the through hole (121), and the pin shaft (13) is matched with a second cotter pin (14). The outer diameter of the shaft end of the pin shaft (13) matches the pin hole II (112) of the roller base (11), and its size is smaller than the inner diameter of the through hole (121) of the roller (12). The roller (12) is connected and constrained by the pin shaft (13) and the second cotter pin (14).

10. The on-line measuring device for steel billet thickness according to any one of claims 1 to 9, characterized in that: The dial (7) is provided with a proximity switch, which is electrically connected to the operating table and cooperates with the pointer (6).

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