Measuring device for measuring rolling reduction of screw-down cylinder

Abstract

The utility model relates to the technical field of displacement detection, in particular to a measuring device for measuring the rolling reduction of a rolling cylinder, which is characterized in that a centering sleeve is fixedly sleeved in a box body, a magnetic probe and a protective sleeve are arranged in the centering sleeve, and the magnetic probe is connected with a double-end screw rod penetrating through the protective sleeve; a guide pipe and a movable socket are arranged on the outer side of the centering sleeve, and the movable socket is located in the guide pipe; the outer side of the centering sleeve is sleeved with a first compression spring and a second compression spring. The front end of the catheter is fixedly connected with a fixed seat, a clamp is arranged on the fixed seat, the clamp is connected with a measuring scale, and one end of the measuring scale penetrates through the fixed seat and the magnetic probe and extends into the protective sleeve. The screw-down displacement measuring device is installed on the outer side of the screw-down cylinder, the screw-down displacement of the screw-down cylinder can be effectively measured, the measured screw-down displacement of the screw-down cylinder is more accurate, and the accuracy of measuring the screw-down displacement of the screw-down cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of displacement detection, in particular to a measuring device for measuring the pressing amount of a pressing cylinder. Background Art

[0002] A rolling mill is a device that realizes the metal rolling process. It generally refers to the equipment that completes the entire process of rolling material production. In the processing of metal sheets, a rolling mill is usually used to roll the sheets, wherein the metal sheets pass through the gap between the rotating rollers to achieve the effect of rolling the metal sheets. At present, rolling mills usually use a press cylinder to drive the rollers to move up and down, so as to achieve the purpose of adjusting the spacing between the rollers. When adjusting the spacing between the rollers, the press displacement of the press cylinder needs to be detected to achieve accurate control of the roller lifting distance, thereby improving the rolling quality of the metal sheets.

[0003] The prior art usually adopts a method of adding a measuring device to the depression cylinder to detect the depression displacement of the depression cylinder. The measuring device uses the cooperation of a magnetic probe and a measuring ruler. The magnetic probe collects the depression displacement to achieve the effect of detecting the displacement of the depression cylinder. However, during the process of the measuring device detecting the depression displacement of the depression cylinder, the vibration of the rolling mill causes the magnetic probe to shake, resulting in inaccurate detection of the depression displacement of the depression cylinder; and external dust and rolling oil can easily enter the interior of the measuring device, which will also cause inaccurate measurement of the depression displacement of the depression cylinder. Summary of the invention

[0004] The utility model solves the problem that the depression displacement of a depression cylinder measured by an existing measuring device is inaccurate, and provides a measuring device for measuring the depression displacement of a depression cylinder. The device is installed to the outside of the depression cylinder, and can effectively measure the depression displacement of the depression cylinder. The measured depression displacement of the depression cylinder is more accurate, thereby improving the accuracy of measuring the depression displacement of the depression cylinder, and further realizing accurate control of the lifting distance of the roller.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a measuring device for measuring the depression amount of a depression cylinder, comprising a box body, a centering sleeve is provided inside the box body, a magnetic probe and a protective sleeve are provided inside the centering sleeve, the magnetic probe is connected to a double-headed screw passing through the protective sleeve, the centering sleeve ensures the axial stability of the magnetic probe, and the double-headed screw is used to prevent the magnetic probe from rotating.

[0006] A conduit and a movable socket are provided on the outer side of the centering sleeve, and the movable socket is located inside the conduit; a compression spring 1 and a compression spring 2 are sleeved on the outer side of the centering sleeve, and the compression spring 1 is located inside the conduit, and the compression spring 2 is located inside the movable socket. Through the cooperation between the compression spring 1 and the conduit, and the cooperation between the compression spring 2 and the movable socket, the compression spring 1 and the compression spring 2 provide tension and apply axial force, thereby ensuring that the result of the depression displacement of the depression cylinder measured when the measuring ruler moves is more accurate.

[0007] The front end of the catheter is fixedly connected to a fixing seat, a clamp is provided on the fixing seat, and a measuring ruler is connected to the clamp. One end of the measuring ruler passes through the fixing seat and the magnetic probe and extends to the inside of the protective cover. The measuring ruler is fixed by the clamp to make the measuring ruler have better stability and tightness.

[0008] A fixed socket is provided on the inner side of the box body, and a scraper strip is provided at the front end of the fixed socket; the fixed seat is connected to a thrust block, and a pressure screw is provided at the end of the thrust block. The pressure screw is used to connect the top plate at the end of the piston rod of the pressing cylinder, and the scraper strip has a partitioning effect to prevent rolling oil and dust from entering the interior of the box body.

[0009] Furthermore, the box body is a structure with a hollow interior and openings at both ends, and a support is fixedly provided on the outer side of the box body. The support is a "convex"-shaped structure, and the box body can be installed to the outer side of the pressing cylinder through the support.

[0010] Furthermore, the inner and outer sides of the rear end of the centering sleeve are both step-shaped structures, and the rear end of the centering sleeve is bolted to the box body; an inner cover is fixedly provided inside the centering sleeve, and an outer cover is provided at the rear end of the centering sleeve, the inner cover is used to limit the position of the protective cover, and the outer cover is used to close the centering sleeve.

[0011] Furthermore, a sleeve is fixedly provided on the inner side wall of the centering sleeve, and a pressure cover for fixing the magnetic probe is provided at the front end of the centering sleeve. A through hole for the measuring ruler to pass through is opened on the pressure cover. Through the cooperation between the pressure cover and the positioning sleeve, the stability of the axial fixation of the magnetic probe can be ensured.

[0012] Furthermore, there are two double-ended screw rods, both ends of which are threadedly connected with locking nuts, a positioning ring is arranged between the magnetic probe and the protective cover, and the positioning ring is arranged on the two double-ended screw rods. The two double-ended screw rods can effectively prevent the magnetic probe from rotating.

[0013] Furthermore, the conduit is slidably connected to the fixed socket and the centering sleeve, a step is fixedly provided on the inner side of the conduit, and the compression spring 1 is located between the step and the movable socket. With the cooperation of the step and the compression spring 1, the conduit can move toward the outside of the box under the action of the compression spring 1, so that the fixed seat drives the measuring ruler to move, thereby achieving the effect of measuring the displacement of the depression cylinder.

[0014] Furthermore, an insulating sleeve is fixedly provided at a recessed portion at one end of the fixing seat, and the clamp is arranged inside the insulating sleeve, and the insulating sleeve plays an insulating role.

[0015] Furthermore, a bellows is sleeved on the outer side of the thrust block, and hose clamps for fixing the bellows are sleeved on the outer sides of the thrust block and the box body. The bellows plays a protective role to prevent rolling oil and dust from entering the interior of the box body.

[0016] Furthermore, a pressure ring is fixedly provided at the front end of the box body, and the pressure ring is used to press and fix the scraper strip.

[0017] Through the above technical solution, the beneficial effects of the utility model are:

[0018] The utility model has a reasonable structure and good use effect. It is installed to the outside of the depression cylinder and can effectively measure the depression displacement of the depression cylinder. The measured depression displacement of the depression cylinder is more accurate, which improves the accuracy of measuring the depression displacement of the depression cylinder, thereby realizing accurate control of the lifting distance of the roller.

[0019] The utility model adopts a positioning sleeve to fix the magnetic probe. The magnetic probe is fixed by the pressure cover and the positioning sleeve, which can ensure the stability of the axial fixation of the magnetic probe. The magnetic probe is connected with two double-headed screws, which can effectively prevent the magnetic probe from rotating, thereby achieving the effect of improving the accuracy of measuring the downward displacement of the pressing cylinder.

[0020] When the pressure screw of the utility model is acted upon by the piston rod of the pressing cylinder, the first compression spring exerts a force on the guide tube in cooperation with the step, and the second compression spring exerts a force on the movable socket. The first compression spring and the second compression spring provide tension and exert axial force, and the guide tube drives the measuring ruler to move through the fixed seat, so that the pressing displacement of the pressing cylinder is collected by the magnetic probe, ensuring that the measured result is more accurate when the measuring ruler moves, and can obtain better stability and feedback of the pressing displacement.

[0021] The utility model can effectively prevent rolling oil and dust from entering the interior of the box body by fixing the scraper bar on the socket, and the scraper bar is always in contact with the fixing seat or the conduit; at the same time, the bellows plays a protective role to prevent rolling oil and dust from entering the interior of the box body, thereby achieving the effect of improving the accuracy of measuring the depression displacement of the depression cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a measuring device for measuring the pressing amount of a pressing cylinder in the utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of a measuring device for measuring the pressing amount of a pressing cylinder in the utility model. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of a measuring device for measuring the pressing amount of a pressing cylinder in the utility model. Figure 3 ;

[0025] Figure 4 This is a schematic diagram of the structure of a measuring device for measuring the pressing amount of a pressing cylinder in the utility model. Figure 4 ;

[0026] Figure 5 This is a schematic diagram of the structure of a measuring device for measuring the pressing amount of a pressing cylinder in the utility model. Figure 5 ;

[0027] Figure 6 This is a schematic diagram of the structure of the utility model in use Figure 1 ;

[0028] Figure 7 This is a schematic diagram of the structure of the utility model in use Figure 2 ;

[0029] Figure 8 This is a schematic diagram of the structure of the utility model in use Figure 3 ;

[0030] Fig. 9 yes Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0031] The numbers in the accompanying drawings are: 1 is a box body, 2 is a support, 3 is a centering sleeve, 4 is an inner cover, 5 is an outer cover, 6 is a pressure cover, 7 is a magnetic probe, 8 is a protective cover, 9 is a double-headed screw, 10 is a positioning ring, 11 is a guide tube, 12 is a step, 13 is a compression spring one, 14 is a movable socket, 15 is a compression spring two, 16 is a fixed seat, 17 is an insulating sleeve, 18 is a clamp, 19 is a measuring ruler, 20 is a fixed socket, 21 is a scraper strip, 22 is a pressure ring, 23 is a thrust block, 24 is a pressure screw, 25 is a bellows, and 26 is a hose clamp. DETAILED DESCRIPTION

[0032] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0033] like Figures 1 to 9As shown, a measuring device for measuring the depression amount of a depression cylinder includes a box body 1, a centering sleeve 3 is fixedly provided inside the box body 1, a magnetic probe 7 and a protective sleeve 8 are provided inside the centering sleeve 3, the magnetic probe 7 is connected to a double-headed screw 9 passing through the protective sleeve 8, in this embodiment, the magnetic probe 7 is fixed by the centering sleeve 3, the magnetic probe 7 is sleeved in the centering sleeve 3, and can effectively prevent the magnetic probe 7 from shaking, a rod hole is opened on the protective sleeve 8 for the double-headed screw 9 to pass through, and the cooperation of the double-headed screw 9 and the protective sleeve 8 can effectively prevent the magnetic probe 7 from rotating in the centering sleeve 3.

[0034] A conduit 11 and a movable socket 14 are provided on the outer side of the centering sleeve 3, and the movable socket 14 is located inside the conduit 11; a compression spring 13 and a compression spring 2 15 are provided on the outer side of the centering sleeve 3, and the compression spring 13 is located inside the conduit 11, and the compression spring 2 15 is located inside the movable socket 14. In this embodiment, the conduit 3 and the movable socket 14 are sleeved on the outer side of the centering sleeve 3 and are located inside the box body 1. The movable socket 14 is a cylindrical structure, and a cylindrical hole matching the centering sleeve 3 is opened at one end of the movable socket 14, the purpose of which is to limit the position of the compression spring 2 15, to ensure that the compression spring 2 15 can apply an axial force to the movable socket 14, so that the movable socket 14 applies a force to the compression spring 13, and the movable socket 14 is slidably connected with the centering sleeve 3 and the conduit 11.

[0035] The front end of the conduit 11 is fixedly connected to a fixing seat 16, and a clamp 18 is provided on the fixing seat 16. The clamp 18 is connected to a measuring ruler 19, and one end of the measuring ruler 19 passes through the fixing seat 16 and the magnetic probe 7 and extends to the inside of the protective cover 8. In this embodiment, the conduit 11 is fixed to the fixing seat 16 by welding, and the clamp 18 includes two clamps, and the measuring ruler 19 is clamped and fixed by the two clamps. When the piston rod of the pressing cylinder moves, the conduit 11 moves outward under the action of the compression spring 13 and the compression spring 2 15, and the conduit 11 drives the fixing seat 16 to move, so that the fixing seat 16 drives the measuring ruler 19 to move in the box body 1 through the clamp 18, and under the cooperation of the magnetic probe 7 and the measuring ruler 19, the pressing displacement of the pressing cylinder will be collected by the magnetic probe 7; wherein the measuring ruler 19 is slidably connected to the protective cover 8, and the protective cover 8 protects the measuring ruler 19, and the wire connected to the magnetic probe 7 passes through the protective cover 8 and extends to the outside of the box body 1.

[0036] A fixed socket 20 is provided on the inner side of the box body 1, and a scraper strip 21 is provided at the front end of the fixed socket 20; the fixed seat 16 is connected to a thrust block 23, and a pressure screw 24 is provided at the end of the thrust block 23. In this embodiment, the fixed socket 20 is located at the front end of the box body 1, and a groove matching the scraper strip 21 is opened at the front end of the fixed socket 20, and the scraper strip 21 is fixed in the groove; when the pressing cylinder is in the standby state, the scraper strip 21 contacts the fixed seat 16, and when the pressing cylinder is in the working state, when the conduit 11 is extended, the scraper strip 21 contacts the outer wall of the conduit 11, and the scraper strip 21 prevents rolling oil and dust from entering the interior of the box body 1, so as to avoid affecting the accuracy of the measured pressing displacement of the pressing cylinder; wherein the pressure screw 21 is used to connect with the top plate at the end of the piston rod.

[0037] The box body 1 is a structure with a hollow interior and openings at both ends. A support 2 is fixedly provided on the outer side of the box body 1. The support 2 is a "convex"-shaped structure. In this embodiment, the box body 1 can be installed to the outer side of the pressing cylinder through the support 2. The support 2 includes two square blocks, one small and one large. Both square blocks are provided with arc grooves matching the box body 1. The box body 1 is a cylindrical structure.

[0038] The inner and outer sides of the rear end of the centering sleeve 3 are both stepped structures, and the rear end of the centering sleeve 3 is bolted to the box body 1; an inner cover 4 is fixedly arranged inside the centering sleeve 3, and an outer cover 5 is arranged at the rear end of the centering sleeve 3. In this embodiment, a sealing ring is installed between the centering sleeve 3 and the box body 1, and the inner cover 4 is bolted to the step inside the centering sleeve 3. The position of the protective sleeve 8 is limited by the inner cover 4 to prevent the protective sleeve 6 from moving on the centering sleeve 3. The inner cover 4 is also provided with two circular holes corresponding to the double-headed screw 9, so that the double-headed screw 9 can pass through the inner cover 4. A sealing ring is also installed between the outer cover 5 and the centering sleeve 3, and the outer cover 5 is used to close the centering sleeve 3.

[0039] A protective sleeve is fixedly provided on the inner side wall of the centering sleeve 3, and a gland 6 for fixing the magnetic probe 7 is provided at the front end of the centering sleeve 3. A through hole for the measuring ruler 19 to pass through is provided on the gland 6. In this embodiment, the gland 6 is bolted to the end of the centering sleeve 3, and plays a role of pressing and fixing the magnetic probe 7, and the measuring ruler 19 is slidably connected to the gland 6.

[0040] There are two double-ended screw rods 9, both ends of which are threadedly connected with locking nuts, and a positioning ring 10 is provided between the magnetic probe 7 and the protective cover 8, and the positioning ring 10 is sleeved on the two double-ended screw rods 9. In this embodiment, the position of the magnetic probe 7 is further limited by the positioning ring 10, one of the locking nuts is located between the magnetic probe 7 and the protective cover 8, and is used to fix the double-ended screw rod 9 on the magnetic probe 7, and the other locking nut is located on the outside of the inner cover 4, and is used to fix the double-ended screw rod 19, so that the two double-ended screw rods 19 can prevent the magnetic probe 7 from rotating in cooperation with the protective cover 8.

[0041] The conduit 11 is slidably connected with the fixed socket 20 and the centering sleeve 3, a step 12 is fixedly arranged on the inner side of the conduit 11, and the compression spring 13 is located between the step 12 and the movable socket 14. In this embodiment, under the cooperation of the step 12 and the compression spring 13, the conduit 11 can move toward the outside of the box body 1 under the action of the compression spring 13.

[0042] An insulating sleeve 17 is fixedly disposed at a recessed portion at one end of the fixing seat 16 , and the clamp 18 is disposed inside the insulating sleeve 17 .

[0043] The outer side of the thrust block 23 is sleeved with a bellows 25, and the outer sides of the thrust block 23 and the box body 1 are sleeved with a hose clamp 26 for fixing the bellows 25. In this embodiment, when the pressing cylinder is in the standby state, the bellows 25 is in a folded state, and when the pressing cylinder is in the working state, the bellows 25 is unfolded, and the bellows 25 plays a protective role to prevent rolling oil and dust from entering the box body 1.

[0044] A pressure ring 22 is fixedly provided at the front end of the box body 1. In this embodiment, the pressure ring 22 is bolted to the end of the box body 1 to play the role of pressing and fixing the scraper strip 21.

[0045] The working principle of the utility model is as follows: two measuring devices are symmetrically installed on the outside of the pressing cylinder, the support 2 outside the box body 1 is fixed to the outer wall of the pressing cylinder by bolts, and the pressure screw 24 is connected to the top plate at the end of the piston rod of the pressing cylinder.

[0046] When the pressing cylinder works and its piston rod moves, the piston rod pushes the top plate to move downward, and the top plate drives the pressure screw 24 to move. At this time, the compression spring 13 applies an axial force to the guide tube 11 through the step 12, and the compression spring 2 15 applies an axial force to the movable socket 14. The movable socket 14 applies a force to the compression spring 13, and the guide tube 11 moves toward the outside of the box body 1. The guide tube 11 drives the fixed seat 16 to extend outward, and the bellows 25 gradually unfolds. The fixed seat 16 drives the measuring ruler 19 to move through the insulating sleeve 17 and the clamp 18. The measuring ruler 19 slides outward in the protective cover 8. With the cooperation of the magnetic probe 7 and the measuring ruler 19, the pressing displacement of the pressing cylinder is collected by the magnetic probe 7.

[0047] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. A measuring device for measuring the amount of a depression cylinder, comprising a housing (1), It is characterized in that The inner fixed sleeve of the box body (1) is provided with a centering sleeve (3), the inner part of the centering sleeve (3) is provided with a magnetic probe (7) and a protective sleeve (8), and the magnetic probe (7) is connected to a double-headed screw (9) passing through the protective sleeve (8); The outer side of the centering sleeve (3) is provided with a conduit (11) and a movable socket (14), and the movable socket (14) is located inside the conduit (11); the outer side of the centering sleeve (3) is provided with a compression spring 1 (13) and a compression spring 2 (15), and the compression spring 1 (13) is located inside the conduit (11), and the compression spring 2 (15) is located inside the movable socket (14); The front end of the catheter (11) is fixedly connected to a fixing seat (16), a clamp (18) is provided on the fixing seat (16), and the clamp (18) is connected to a measuring ruler (19), one end of the measuring ruler (19) passes through the fixing seat (16) and the magnetic probe (7) and extends to the interior of the protective cover (8); A fixed socket (20) is arranged inside the box body (1), and a scraper strip (21) is arranged at the front end of the fixed socket (20); a thrust block (23) is connected to the fixed seat (16), and a pressure screw (24) is arranged at the end of the thrust block (23).

2. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that The box body (1) is a structure that is hollow inside and open at both ends. A support (2) is fixedly provided on the outside of the box body (1), and the support (2) is in the shape of a "convex" character.

3. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that The inner side and the outer side of the rear end of the centering sleeve (3) are both stepped structures, and the rear end of the centering sleeve (3) is bolted to the box body (1); an inner cover (4) is fixedly provided inside the centering sleeve (3), and an outer cover (5) is provided at the rear end of the centering sleeve (3).

4. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that A protective sleeve is fixedly provided on the inner side wall of the centering sleeve (3), a pressure cover (6) for fixing the magnetic probe (7) is provided at the front end of the centering sleeve (3), and a through hole for the measuring ruler (19) to pass through is provided on the pressure cover (6).

5. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that The number of the double-ended screw rods (9) is two, and both ends of the double-ended screw rods (9) are threadedly connected with locking nuts. A positioning ring (10) is provided between the magnetic probe (7) and the protective cover (8), and the positioning ring (10) is sleeved on the two double-ended screw rods (9).

6. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that The conduit (11) is slidably connected to the fixed socket (20) and the centering sleeve (3); a step (12) is fixedly provided on the inner side of the conduit (11); and the compression spring 1 (13) is located between the step (12) and the movable socket (14).

7. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that An insulating sleeve (17) is fixedly disposed at a recessed portion at one end of the fixing seat (16), and the clamp (18) is disposed inside the insulating sleeve (17).

8. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that The outer side of the thrust block (23) is sleeved with a bellows (25), and the outer sides of the thrust block (23) and the box body (1) are sleeved with a hose clamp (26) for fixing the bellows (25).

9. A measuring device for measuring the pressing amount of a pressing cylinder according to claim 1, It is characterized in that A pressure ring (22) is fixedly provided at the front end of the box body (1).

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