CN219798240U - Steel plate thickness measuring device - Google Patents

Abstract

The utility model discloses a steel plate thickness measuring device which comprises a feeding roller way and two distance measuring instruments arranged at intervals, wherein the feeding roller way comprises a rack, a transverse frame and a roller way for conveying a steel plate, one distance measuring instrument is positioned above the roller way, the other distance measuring instrument is arranged below the roller way, and the distance measuring line emission points sent by the upper distance measuring instrument and the lower distance measuring instrument are arranged on the upper surface and the lower surface of the same position of the steel plate. According to the steel plate thickness measuring device disclosed by the utility model, the distance measuring instruments are arranged on the upper side and the lower side of the steel plate, so that the influence of irregular plate shapes on the thickness measuring result of the steel plate is avoided, the influence of the plate shapes on the distance measuring value can be eliminated, the thickness of the steel plate is accurately measured, the test deviation cannot occur even if the steel plate thickness is faced with various irregular plate shapes such as a seesaw, a pendulous head and a tortoise back, the fault phenomenon of judging as a laminated plate due to plate deformation is effectively avoided, the production efficiency is improved, and the preliminary automation of the plate shape control of the raw material plate is realized.

Description

Steel plate thickness measuring device

Technical Field

The utility model relates to the technical field of steel production and processing, in particular to a steel plate thickness measuring device.

Background

The quenching process of the quenching and tempering production line mainly comprises the following steps: the method comprises the steps of raw material plate-feeding device-feeding roller way-shot blasting machine-quenching furnace-quenching machine quenching. During normal production, the feeding device only places one steel plate on the feeding roller way at a time. Because the weight of the thin plate is small and the surface of the thin plate is smooth, the situation that two steel plates are lifted and put on a feeding roller way at the same time can occur. According to the process, the steel plate is conveyed into a quenching furnace after shot blasting, and is rapidly discharged from the furnace for quenching after heating and heat preservation are finished. The rear part of the quenching furnace is configured into a rolling quenching machine, a large amount of cooling water from a nozzle is used for spraying and cooling the steel plate, and the deformation of the steel plate is controlled by using a smaller roll gap height between an upper roll table and a lower roll table. The height of the roll gap of the quenching machine is controlled by a hydraulic system and is generally slightly larger than the thickness of the steel plate, and the cooling nozzle of the quenching machine is closer to the outer wall of the roller way for rapid cooling of the steel plate.

The case where two steel sheets are stacked up and down in production is called a stacked plate. The stack is not easily found because it is usually a steel sheet of the same gauge.

Because the total thickness of the lamination exceeds the height of the roll gap of the feeding roller way, the lamination enters the quenching machine to impact the quenching machine equipment and the hydraulic system at first; after the lamination enters the quenching machine, the cooling nozzle still works normally, but only the upper surface of the upper layer steel plate of the lamination is cooled, only the lower surface of the lower layer steel plate of the lamination is cooled, and the stress generated by uneven cooling of the upper surface and the lower surface of the steel plate causes the upper tortoiseshell or the warping head of the two steel plates to respectively generate upper and lower tortoiseshell or the warping head, further impacts the whole equipment, and even the deformation of the steel plates can directly touch and damage the cooling nozzle, so that the quenching machine cannot be used normally. As a core device of the whole quenching line, the quenching machine can have great influence on production once failure occurs. Therefore, effective measures must be taken to prevent the stack from entering the quenching machine to ensure the safety of the quenching machine equipment and the normal operation of the production line.

In the related art, a steel plate thickness measuring device generally adopts a single laser range finder to measure thickness. The principle of the laser range finder is as follows: the laser range finder integrates the transmitting end and the receiving end into a whole, the laser is transmitted and reflected by the surface of the object, and the distance between the range finder and the measured object can be calculated by measuring the time required between the laser transmission and the laser reception. When in actual use, the laser range finder is arranged above the roller way to measure the thickness of the steel plate on the roller way, and for a flatter raw material plate, the measured value and the actual deviation of the plate thickness are smaller and more stable, and the plate thickness abnormality can be found in time and alarm can be given when the plate stacking test is carried out. However, when the steel plate is uneven, such as if there is a turn-up, a drop head or a tortoise back, the measured plate thickness and the actual deviation are large. In particular in the case of the tortoise back of the steel plate, the measured thickness is severely inconsistent with the actual thickness. The thin plate is easy to deform, the deformation size is likely to exceed the thickness of the steel plate, the measured plate thickness is more than twice of the actual plate thickness, the system can judge the plate thickness as a plate, once the plate thickness is judged to be the plate thickness, the steel plate stops entering the furnace and simultaneously the system alarms, production operators need to check on site, the plate is confirmed to be entering the furnace again, and the production rhythm is seriously influenced.

In view of this, it is necessary to provide a steel plate thickness measuring device to solve the above-mentioned drawbacks.

Disclosure of Invention

The utility model mainly aims to provide a steel plate thickness measuring device, which aims to solve the problem that the thickness measurement of the conventional range finder is inaccurate.

In order to achieve the above purpose, the utility model provides a steel plate thickness measuring device, which comprises a feeding roller way and two distance measuring instruments arranged at intervals, wherein the feeding roller way comprises a rack, a transverse frame fixedly connected to the rack and a roller way arranged below the transverse frame and used for conveying steel plates, one distance measuring instrument is fixedly arranged on the transverse frame and positioned above the roller way, the other distance measuring instrument is fixed on the ground and arranged below the roller way, and the emitting points of distance measuring lines emitted by the upper and lower distance measuring instruments are arranged on the upper and lower surfaces of the same position of the steel plate.

Preferably, the two distance meters are arranged at opposite intervals, and the upper distance meter and the lower distance meter are positioned on the same straight line.

Preferably, the distance between the distance meter arranged on the transverse frame and the upper surface of the steel plate is 300-500mm, and the distance between the distance meter arranged below the roller table and the lower surface of the steel plate is 300-500mm.

Preferably, the distance meter is projected on the same horizontal plane as the roller way, and the distance meter is positioned at the center of the roller way.

Preferably, the range finder is fixed on the cross frame through a mounting frame, the mounting frame comprises a fixing plate, an adjusting rod vertically and fixedly connected to the fixing plate, and a telescopic sliding rod slidingly connected to the adjusting rod, and the range finder is mounted at one end of the telescopic sliding rod far away from the adjusting rod.

Preferably, the telescopic sliding rod comprises a sliding ring sleeved on the adjusting rod and capable of sliding up and down along the adjusting rod, a sleeve with one end fixedly connected to the sliding ring, and a sleeve rod sleeved in the other end of the sleeve and capable of moving transversely along the axis of the sleeve, and telescopic fasteners are mounted on the sleeve and penetrate through the sleeve to fix the sleeve rod.

Preferably, the adjusting rod and the telescopic sliding rod are fixed through sliding fasteners, the adjusting rod is vertically provided with a plurality of mounting holes penetrating through two opposite side surfaces of the adjusting rod, and the sliding fasteners penetrate through the telescopic sliding rod to be mounted in the mounting holes so as to position the telescopic sliding rod after position adjustment.

Preferably, the telescopic fastener is a screw.

Preferably, the slip fastener is a screw.

Compared with the prior art, the steel plate thickness measuring device provided by the utility model has the following beneficial effects:

according to the steel plate thickness measuring device, the distance measuring instruments are arranged on the upper side and the lower side of the steel plate, the steel plate is subjected to double-sided thickness measurement, so that the influence of irregular plate shapes on the thickness measuring result of the steel plate is avoided, the influence of the steel plate shapes on the distance measuring value can be eliminated, the thickness of the steel plate is accurately measured, even if the steel plate thickness is faced with various irregular plate shapes, such as a seesaw, a pendulous head and a tortoise back, test deviation cannot occur, the fault phenomenon of a laminated plate judged due to plate deformation is effectively avoided, the production efficiency is improved, and the preliminary automation of the plate shape control of raw materials is realized.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a steel plate thickness measuring device according to the present utility model;

FIG. 2 is a schematic view of the mounting bracket shown in FIG. 1;

FIG. 3 is a schematic view of two rangefinder test grade steel plates shown in FIG. 1;

fig. 4 is a schematic view of the two rangefinder test tortoise back steel plates shown in fig. 1.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

Referring to fig. 1, the utility model provides a steel plate thickness measuring device, which comprises a feeding roller table 1 and distance meters 3 arranged at the upper and lower positions of the feeding roller table 1 at intervals, wherein the feeding roller table 1 comprises two racks 11 arranged at intervals, a transverse frame 13 fixedly connected between the two racks 11 and a roller table 15 arranged below the transverse frame 13 and used for conveying a steel plate 7, one distance meter 3 is fixedly arranged on the transverse frame 13 and positioned above the roller table 15, the other distance meter 3 is fixedly arranged on the ground and arranged below the roller table 15, and the emitting points of distance measuring lines emitted by the upper and lower distance meters 3 are arranged on the upper and lower surfaces of the same position of the steel plate 7. Through arranging the range finder 3 above and below the steel plate 7, the double-sided thickness measurement is carried out on the steel plate 7, so that the influence of irregular plate shapes on the thickness measurement result of the steel plate 7 is avoided, the influence of plate shapes on the distance measurement value can be eliminated, the thickness of the steel plate 7 is accurately measured, even if various irregular plate shapes such as a warping head, a hanging head and a tortoise back are faced, test deviation can not occur, the fault phenomenon of judging as a laminated plate due to plate deformation is effectively avoided, the production efficiency is improved, and the preliminary automation of the plate shape control of the raw material plate is realized.

The distance meters 3 are laser distance meters, two distance meters 3 are arranged at intervals relatively, and the upper distance meter 3 and the lower distance meter 3 are located on the same straight line. Namely, the projection of the distance meter positioned above the roller table 1 and the projection of the distance meter positioned below the roller table 1 on the same horizontal plane are overlapped, so that the laser emission points of the two distance meters 3 are positioned on the upper surface and the lower surface of the same position of the steel plate 7, the dislocation of the two distance meters is avoided, and the adjustment of the two distance meters 3 is reduced as much as possible. Of course, in other embodiments, the rangefinder 3 may also be an ultrasonic rangefinder or an electro-optical rangefinder.

Specifically, the model of the distance meter 3 is related to the test distance, and in this embodiment, the distance between the distance meter 3 and the steel plate 7 is set to 300-500mm. Further, the distance between the distance meter 3 arranged on the transverse frame 13 and the upper surface of the steel plate 7 is 300-500mm, and the distance between the distance meter 3 arranged below the roller table 15 and the lower surface of the steel plate 7 is 300-500mm.

Specifically, in this embodiment, since a certain positional deviation occurs when the steel sheet 7 is rolled on the roller table 15, in order to ensure that the laser emission line of the rangefinder 3 can fall on the steel sheet 7 as much as possible, the rangefinder 3 and the roller table 15 are projected on the same horizontal plane, and the rangefinder 3 is located in the middle of the roller table 15.

Referring to fig. 2, further, the rangefinder 3 is fixed on the cross frame 13 by a mounting frame 5, the mounting frame 5 includes a fixing plate 51, an adjusting rod 53 vertically and fixedly connected to the fixing plate 51, and a telescopic sliding rod 55 slidingly connected to the adjusting rod 53, and the rangefinder 3 is mounted on one end of the telescopic sliding rod 55 far away from the adjusting rod 53. The fixed plate 51 is mounted on the cross frame 13 or the ground through a bolt, the telescopic sliding rod 55 moves up and down along the adjusting rod 53, so that the position of the telescopic sliding rod 55 on the adjusting rod 53 is adjusted, the distance between the range finder 3 and the steel plate 7 fixed on the telescopic sliding rod 55 is adjusted, the purpose of flexibly adjusting the distance between the range finder 3 and the steel plate 7 is achieved, and range finders 3 of different types can be selected without being limited to specific range finders 3.

The adjusting rod 53 and the telescopic sliding rod 55 are fixed by a sliding fastener 57, the adjusting rod 53 is vertically provided with a plurality of mounting holes 531 penetrating through two opposite side surfaces thereof, and when the telescopic sliding rod 55 moves to a required position, the sliding fastener 57 penetrates through the telescopic sliding rod 55 and is mounted in the mounting holes 531 to position the telescopic sliding rod 55 after position adjustment.

Specifically, in the present embodiment, the slip fastener 57 is a screw. Of course, in other embodiments, the slip fastener 57 may also be a pin, rivet, or the like.

The telescopic sliding rod 55 comprises a sliding ring 553 sleeved on the adjusting rod 53 and capable of sliding up and down along the adjusting rod 53, a sleeve 553 with one end fixedly connected to the sliding ring 553, and a sleeve rod 555 sleeved in the other end of the sleeve 553 and capable of moving along the axial direction of the sleeve 553, a telescopic fastener 557 is mounted on the sleeve 553, and the telescopic fastener 557 penetrates through the sleeve 553 to fix the sleeve rod 555. The sliding ring 553 moves up and down to adjust the height of the adjusting rod 53, the loop bar 555 moves transversely along the axis direction to adjust the overall length, and when the loop bar 555 stretches to a required position, the telescopic fastener 557 passes through the through hole formed in the telescopic sliding bar 55 and the mounting hole 531 to position the telescopic sliding bar.

In this way, when the upper and lower rangefinder 3 adjusts the corresponding positions, the two rangefinders are achieved by laterally moving the loop bar 555, specifically, in this embodiment, the telescopic fastener 557 is a screw, and the telescopic fastener 557 passes through a through hole formed in the sliding ring 553 and abuts against the loop bar 555 to position the moved loop bar 555.

Referring to fig. 3 and 4 in combination, the following illustrates the use of two rangefinders 3:

the distance between the upper laser rangefinder 3 and the outer wall of the roller table 15 is a fixed value δ1, the distance between the lower laser rangefinder 3 and the outer wall of the roller table 15 is a fixed value δ3 (about 300 mm), and the distance between the upper and lower rangefinders 3 is δ1+δ3.

For a flatter steel plate 7, when passing through a thickness measuring point, the distance from the upper surface of the steel plate 7 measured by the upper laser distance meter 3 is delta 2, and the distance from the lower surface of the steel plate 7 (namely, the outer wall of the roller way 15) measured by the lower laser distance meter 3 is delta 3, so that the measured thickness of the steel plate 7 can be calculated: delta' = (δ1+δ3) - δ2- δ3=δ1- δ2=δ, consistent with the results of the single-sided thickness measurement scheme. For a plate-type flatter steel plate 7, a double-sided thickness measurement scheme is feasible.

If the gauge steel sheet 7 is uneven, if passing through the thickness measuring point, there is a tortoise back at the measuring position, and the height is Δδ, as shown in fig. 4.

The distance of the upper surface of the back of the tortoise measured by the upper laser range finder 3 is as follows: the distance measured by the laser range finder 3 installed below is δ3+Δδ, and the thickness δ' = (δ1+δ3) - (δ2- Δδ) - (δ3+Δδ) =δ1- δ2=δ of the steel plate 7 is calculated. From the above equation, even at the tortoise back of the steel plate 7, the measured thickness obtained by the double-sided thickness measuring method is identical to the actual thickness of the steel plate 7.

The measured thickness obtained by the double-sided thickness measurement method is also identical to the actual plate thickness of the steel plate 7 in the case of the tilting and sagging of the steel plate 7, and is not described here.

According to the steel plate thickness measuring device provided by the utility model, the distance meters 3 are arranged above and below the steel plate 7, and the double-sided thickness measurement is carried out on the steel plate 7, so that the influence of irregular plate shapes on the thickness measuring result of the steel plate 7 is avoided, the influence of the plate shapes of the steel plate 7 on the distance measuring value can be eliminated, the thickness of the steel plate 7 is accurately measured, and even if various irregular plate shapes such as a warping head, a pendulous head and a tortoise back are faced, the test deviation can not occur, the fault phenomenon of a laminated plate judged due to the deformation of the plate is effectively avoided, the production efficiency is improved, and the preliminary automation of the plate shape control of the raw material plate is realized.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the utility model, but rather is intended to cover any equivalents of the structures or equivalent processes disclosed herein or in the alternative, which may be employed directly or indirectly in other related arts.

Claims (9)

1. The utility model provides a steel sheet thickness measuring device, its characterized in that includes the distancer that material loading roll table and upper and lower two intervals set up, the material loading roll table includes rack, fixed connection be in crossbearer on the rack and locate the roll table that the crossbearer below is used for carrying the steel sheet, one distancer fixed mounting is in on the crossbearer and be located the top of roll table, another the distancer is fixed subaerial and is set up the below of roll table, upper and lower two the range wire launch point that the distancer sent is in two upper and lower surfaces in the same position of steel sheet.

2. The steel plate thickness measuring device according to claim 1, wherein two distance meters are arranged at intervals, and the upper distance meter and the lower distance meter are positioned on the same straight line.

3. The steel plate thickness measuring device according to claim 1, wherein a distance between the distance meter provided on the traverse frame and an upper surface of the steel plate is 300-500mm, and a distance between the distance meter provided below the roller table and a lower surface of the steel plate is 300-500mm.

4. The steel plate thickness measuring device according to claim 1, wherein the distance meter is located in the middle of the roller table, and the distance meter is projected on the same horizontal plane as the roller table.

5. The steel plate thickness measuring device according to claim 1, wherein the distance measuring instrument is fixed on the transverse frame through a mounting frame, the mounting frame comprises a fixing plate, an adjusting rod vertically fixedly connected to the fixing plate, and a telescopic sliding rod slidingly connected to the adjusting rod, and the distance measuring instrument is mounted at one end of the telescopic sliding rod away from the adjusting rod.

6. The steel plate thickness measuring device according to claim 5, wherein the telescopic sliding rod comprises a sliding ring sleeved on the adjusting rod and capable of sliding up and down along the adjusting rod, a sleeve with one end fixedly connected to the sliding ring, and a sleeve rod sleeved in the other end of the sleeve and capable of moving along the axial direction of the sleeve, and the sleeve is provided with a telescopic fastener which penetrates through the sleeve to fix the sleeve rod.

7. The steel plate thickness measuring device according to claim 5, wherein the adjusting rod and the telescopic sliding rod are fixed by a sliding fastener, the adjusting rod is vertically provided with a plurality of mounting holes penetrating through two opposite side surfaces of the adjusting rod, and the sliding fastener penetrates through the telescopic sliding rod to be mounted in the mounting holes so as to position the telescopic sliding rod after position adjustment.

8. The steel plate thickness measuring device according to claim 6, wherein the telescopic fastener is a screw.

9. The steel plate thickness measuring device according to claim 7, wherein the slip fastener is a screw.