Measuring device capable of measuring size of rolled round steel at high temperature

Abstract

The utility model discloses a measuring device capable of measuring the size of rolled round steel at high temperature, and relates to the technical field of size measurement of rolled round steel. Comprising a measuring clamping plate and a handheld rod, the measuring clamping plate is divided into a first clamping plate part, a second clamping plate part and a connecting part, the first clamping plate part and the second clamping plate part are oppositely arranged, and the first clamping plate part, the second clamping plate part and the connecting part can be matched to form a clamping space used for measuring the size of rolled round steel; the handheld rod is fixedly connected to the connecting part; the clamping amount space is sequentially divided into a first clamping amount section, a second clamping amount section and a third clamping amount section, the inner diameter of the first clamping amount section is kept unchanged in the depth direction of the clamping amount space, the inner diameter of the second clamping amount section is gradually reduced, and the inner diameter of the third clamping amount section is kept unchanged. According to the utility model, the rolling size can be reduced or enlarged in advance according to the specific position of the center line of the round steel in the second clamping amount section, so that the size relationship of the measured round steel size can be quickly fed back, and the rolling size of the round steel can be monitored more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of rolling round steel dimension measurement technology, specifically a caliper device that can measure the dimensions of rolled round steel at high temperatures. Background Technology

[0002] The rolling of round steel bars is completed at high temperatures, and the dimensional accuracy of the rolled round steel is a core quality indicator of steel products, directly affecting whether the products can be delivered smoothly. Therefore, in order to control the rolling dimensions, it is necessary to monitor the rolling dimensions regularly. Only by accurately understanding the dimensional characteristics of the freshly rolled high-temperature round steel bars can the rolling mill be adjusted accordingly.

[0003] Currently, common methods for dimensional monitoring include online diameter gauge monitoring and monitoring using micrometers after material removal. While online diameter gauge monitoring is convenient, it suffers from high equipment investment and maintenance costs, requires regular calibration, and is difficult to detect when deviations in the measured diameter are found. On the other hand, monitoring using micrometers after material removal offers high dimensional accuracy, but manually measuring freshly rolled high-temperature round steel is difficult and poses a serious safety hazard to the measuring personnel.

[0004] Therefore, it is still very necessary to design a measuring device that can directly measure the dimensions of high-temperature round steel bars, reduce cost investment, and conveniently monitor rolling dimensions, and to control the adjustment of rolling line dimensions. Utility Model Content

[0005] The purpose of this utility model is to provide a measuring device that can measure the size of rolled round steel at high temperatures, so as to solve the problems in the above-mentioned background technology, such as the high investment and maintenance costs of online diameter measuring instrument monitoring equipment, the need for regular calibration, and the difficulty in detecting deviations in diameter measurement values. In addition, although the size measurement accuracy is high when using a micrometer to measure and monitor after material taking, there is a problem of high operation difficulty when manually measuring freshly rolled high-temperature round steel.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a measuring device for measuring the dimensions of rolled round steel at high temperatures, comprising a measuring plate and a handheld rod, wherein the measuring plate is divided into a first measuring plate portion, a second measuring plate portion, and a connecting portion, the first measuring plate portion and the second measuring plate portion are arranged opposite to each other, the connecting portion is used to connect the first measuring plate portion and the second measuring plate portion, the first measuring plate portion, the second measuring plate portion and the connecting portion can cooperate to form a measuring space for measuring the dimensions of rolled round steel; the handheld rod is fixed to the connecting portion, and the installation position of the handheld rod is different from that of the measuring space; along the depth direction of the measuring space, the measuring space is sequentially divided into a first measuring section, a second measuring section and a third measuring section, the first measuring section, the second measuring section and the third measuring section are smoothly connected, and along the depth direction of the measuring space, the inner diameter of the first measuring section remains unchanged, the inner diameter of the second measuring section gradually decreases, and the inner diameter of the third measuring section remains unchanged.

[0007] Based on the above technical features, when using the measuring device designed in this utility model to measure the size of round steel, if the size of the round steel being measured is too large, the center line of the round steel cannot pass through the first measuring section. If the size of the round steel being measured is too small, the entire round steel will pass through the third measuring section until the top of the round steel contacts the connecting part of the measuring plate. When the size of the round steel being measured is within the allowable tolerance range, the center line of the round steel will fall into the second measuring section. The smaller the size of the round steel, the closer the center line of the round steel is to the third measuring section; the larger the size of the round steel, the closer the center line of the round steel is to the first measuring section. Therefore, when the measured round steel is within the allowable tolerance range, the rolling size can be reduced or enlarged in advance according to the specific position of the center line of the round steel in the second gauge section. Specifically, when the center line of the round steel is closer to the first gauge section, the rolling size of the round steel can be appropriately reduced, and when the center line of the round steel is closer to the third gauge section, the rolling size of the round steel can be appropriately enlarged. This allows for rapid feedback on the size relationship of the measured round steel and more convenient monitoring of the rolling size of the round steel.

[0008] Preferably, in this technical solution, along the depth direction of the measuring space, the sides of the first and / or second clamping plates within the measuring space are sequentially formed as a first horizontal segment, an inclined segment, and a second horizontal segment. The inclined segment's inclination direction faces the depth direction of the measuring space, and both the first and second horizontal segments are parallel to the depth direction of the measuring space. More preferably, the length of the first horizontal segment is 3–7 mm, the vertical length of the inclined segment parallel to the depth direction of the measuring space is 1 / 3–2 / 3 of the measured radius of the rolled round steel, and the length of the second horizontal segment is 1 / 3–2 / 3 of the measured radius of the rolled round steel.

[0009] Preferably, in this technical solution, the measuring plate is integrally formed from a steel plate, and its thickness is 5-10mm. More preferably, the measuring plate is made of high-carbon manganese spring steel.

[0010] Preferably, in this technical solution, the second clamping plate is fixedly connected to the connecting portion, and the connecting portion is provided with a slide rail. The extension direction of the slide rail is perpendicular to the depth direction of the clamping space. One end of the first clamping plate is provided with a slider, and the first clamping plate is slidably mounted on the slide rail by the slider. Furthermore, the first clamping plate can be positioned and mounted on the slide rail by a limiting member. More preferably, the slide rail is a groove, and the connecting portion is provided with a plurality of pin holes arranged at equal intervals; the limiting member is a locking pin, and the first clamping plate can slide to the pin hole and be locked and fixed by the locking pin extending into the pin hole. The interval between two adjacent pin holes can be selected as 3-7 mm. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the measuring device in the first embodiment of the present invention (hand lever not shown);

[0012] Figure 2 This is a schematic diagram of the measuring device in the second embodiment of the present invention;

[0013] Figure 3 This is a schematic diagram of the measuring device in the third embodiment of the present invention (hand lever not shown).

[0014] In the diagram: 1. Measuring plate; 11. First measuring plate section; 12. Second measuring plate section; 13. Connecting part; 2. Hand lever; 3. Measuring space; 31. First measuring section; 32. Second measuring section; 33. Third measuring section; 4. Slide rail; 5. Slider; 6. Pin hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] It should be noted that in the description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0019] like Figures 1 to 3 As shown, this utility model provides a technical solution: a measuring device for measuring the dimensions of rolled round steel at high temperatures, the measuring device including a measuring plate 1 and a hand-held rod 2.

[0020] The measuring caliper 1 is divided into a first caliper section 11, a second caliper section 12, and a connecting section 13. The first caliper section 11 and the second caliper section 12 are arranged opposite to each other. The connecting section 13 is used to connect the first caliper section 11 and the second caliper section 12. The first caliper section 11, the second caliper section 12, and the connecting section 13 can cooperate to form a measuring space 3 for measuring the dimensions of rolled round steel. The hand lever 2 is fixed to the connecting section 13, and the installation position of the hand lever 2 is different from that of the measuring space 3.

[0021] like Figures 1 to 3 As shown, along the depth direction of the measuring space 3, the measuring space 3 is divided into a first measuring section 31, a second measuring section 32, and a third measuring section 33 in sequence. The first measuring section 31, the second measuring section 32, and the third measuring section 33 are smoothly connected. Furthermore, along the depth direction of the measuring space 3, the inner diameter of the first measuring section 31 remains unchanged, the inner diameter of the second measuring section 32 gradually decreases, and the inner diameter of the third measuring section 33 remains unchanged.

[0022] When measuring the dimensions of round steel using the measuring device designed in this invention, if the measured round steel is too large, the center line of the round steel cannot pass through the first measuring section 31. If the measured round steel is too small, the entire round steel will pass through the third measuring section 33 until the top of the round steel contacts the connecting part 13 of the measuring plate 1. When the measured round steel is within the allowable tolerance range, the center line of the round steel will fall within the second measuring section 32. The smaller the size of the round steel, the closer the center line of the round steel is to the third measuring section 33. The larger the size of the round steel, the closer the center line of the round steel is to the first measuring section 31. Therefore, when the measured round steel is within the allowable tolerance range, the rolling size can be reduced or enlarged in advance according to the specific position of the center line of the round steel in the second gauge section 32. Specifically, when the center line of the round steel is closer to the first gauge section 31, the rolling size of the round steel can be appropriately reduced, and when the center line of the round steel is closer to the third gauge section 33, the rolling size of the round steel can be appropriately enlarged, thereby quickly feeding back the size relationship of the measured round steel and more conveniently monitoring the rolling size of the round steel.

[0023] like Figure 1 As shown, this is the first embodiment of the measuring device of the present invention. Along the depth direction of the measuring space 3, the side of the first measuring plate part 11 in the measuring space 3 is successively a first horizontal section, an inclined section and a second horizontal section. The side of the second measuring plate part 12 in the measuring space 3 is always a third horizontal section. The inclined section is inclined in the direction of the depth direction of the measuring space 3. The first horizontal section, the second horizontal section and the third horizontal section are all parallel to the depth direction of the measuring space 3.

[0024] like Figure 2 As shown, this is the second embodiment of the measuring device of the present invention. Along the depth direction of the measuring space 3, the sides of the first measuring plate part 11 and the second measuring plate part 12 in the measuring space 3 are respectively a first horizontal section, an inclined section and a second horizontal section. The inclined section is inclined in the direction of the depth direction of the measuring space 3, and the first horizontal section and the second horizontal section are parallel to the depth direction of the measuring space 3.

[0025] When measuring personnel use a caliper to calibrate high-temperature round steel bars (i.e., the round steel falls into the caliper space), the round steel touches the measuring caliper 1 during the alignment process. After repeated measurements, wear will occur at the sharp corner of the first caliper 11, thus affecting the accurate measurement of the round steel. Therefore, a first horizontal section is set in the caliper as a wear buffer area to avoid wear on the inclined section, effectively improving the measurement accuracy and service life of the caliper.

[0026] In the first and second embodiments shown above, the length of the first horizontal segment is 3. ～7mm, specifically 3mm, 4mm, 5mm, 6mm, 7mm; the vertical length of the inclined section parallel to the depth direction of the measuring space 3 is 1 / 3 to 2 / 3 of the radius of the rolled round steel being measured, and the length of the second horizontal section is 1 / 3 to 2 / 3 of the radius of the rolled round steel being measured.

[0027] For example, in the first embodiment, the length of the first horizontal segment can be selected as 5mm, the vertical length of the inclined segment parallel to the depth direction of the measuring space 3 is 1 / 2 of the radius of the measured rolled round steel, and the length of the second horizontal segment is 1 / 2 of the radius of the measured rolled round steel.

[0028] The measuring plate 1 is integrally formed from a steel plate. The thickness of the measuring plate 1 is 5-10mm, specifically 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm. The material of the measuring plate 1 is high-carbon manganese spring steel.

[0029] The measuring device designed above can be used to measure round steel bars with dimensions of φ70-φ120. The measurement specifications are based on the second group of permissible positive deviations for the dimensions of hot-rolled round steel bars in GB / T 702-2017 (e.g., the permissible deviation for φ115-φ120 is 0-1.3mm, for φ85-φ110 it is 0-1mm, and for φ70-φ80 it is 0-0.7mm). Specifically, in the first embodiment, the specific dimensional design of the measuring device is shown in Table 1.

[0030] Measurement Specifications B1 B2 H1 H2 φ120 (0~+1.3) 122.15 120.84 65 125 φ115(0~+1.3) 117.11 115.81 63 120 φ110(0~+1.0) 111.78 110.77 60 115 φ105 (0~+1.0) 106.69 105.68 58 110 φ100 (0~+1.0) 101.66 100.65 55 105 φ95 (0~+1.0) 96.62 95.62 53 100 φ90 (0~+1.0) 91.59 90.59 50 95 φ85 (0~+1.0) 86.56 85.55 48 90 φ80(0~+0.7) 81.22 80.52 45 85 φ75 (0~+0.7) 76.15 75.45 43 80 φ70 (0~+0.7) 71.12 70.42 40 75

[0031] (Table 1)

[0032] In Table 1: B1: the distance between the first horizontal segment of the first clamping plate and the third horizontal segment of the second clamping plate; B2: the distance between the second horizontal segment of the first clamping plate and the third horizontal segment of the second clamping plate; H1: the vertical length of the first horizontal segment and the inclined segment of the first clamping plate parallel to the depth direction of the clamping space; H2: the vertical length of the first horizontal segment, the inclined segment and the second horizontal segment of the first clamping plate parallel to the depth direction of the clamping space or the length of the third horizontal segment of the second clamping plate.

[0033] B1 = Measurement specification with maximum allowable positive deviation * coefficient of thermal expansion; B2 = Measurement specification with minimum allowable positive deviation * coefficient of thermal expansion (The coefficient of thermal expansion for round steel with specifications of φ110-φ120 is 1.007, for round steel with specifications of φ80-φ105 is 1.0065, and for round steel with specifications of φ70-φ75 is 1.006). Taking round steel with specification of φ110 as an example, B1 = 111 * 1.007 = 111.78 (mm), B2 = 110 * 1.007 = 110.77 (mm).

[0034] like Figure 3 As shown, this is the third embodiment of the present invention. The second card plate part 12 is fixedly connected to the connecting part 13. The connecting part 13 is provided with a slide 4. The extension direction of the slide 4 is perpendicular to the depth direction of the card space 3. One end of the first card plate part 11 is provided with a slider 5. The first card plate part 11 is slidably installed on the slide 4 through the slider 5. Furthermore, the first card plate part 11 can be positioned and installed on the slide 4 by a limiting member.

[0035] Specifically, the slide 4 is a groove, and the connecting part 13 is provided with a plurality of pin holes 6 arranged at equal intervals; the limiting member is a locking pin, and the first locking plate part 11 can slide to the pin hole 6 and be locked and fixed by the locking pin extending into the pin hole 6, such as Figure 3 As shown, the connecting part 13 has two sets of pin holes 6 arranged at the same intervals above and below the slide rail 4. The first retaining plate part 11 can be fixed to the connecting part 13 through the two opposing pin holes. The interval between two adjacent pin holes 6 can be selected from 3 to 7 mm, specifically 3 mm, 4 mm, 5 mm, 6 mm, or 7 mm.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A caliper for measuring the dimensions of rolled round steel at high temperatures, characterized in that, The measuring device includes: Measuring plate (1), the measuring plate (1) is divided into a first plate part (11), a second plate part (12) and a connecting part (13). The first plate part (11) and the second plate part (12) are arranged opposite to each other. The connecting part (13) is used to connect the first plate part (11) and the second plate part (12). The first plate part (11), the second plate part (12) and the connecting part (13) can cooperate to form a measuring space (3) for measuring the size of rolled round steel. Handheld lever (2), the handheld lever (2) is fixed to the connecting part (13), and the installation position of the handheld lever (2) is different from the measuring space (3); Along the depth direction of the measuring space (3), the measuring space (3) is divided into a first measuring section (31), a second measuring section (32) and a third measuring section (33) in sequence. The first measuring section (31), the second measuring section (32) and the third measuring section (33) are smoothly connected. Along the depth direction of the measuring space (3), the inner diameter of the first measuring section (31) remains unchanged, the inner diameter of the second measuring section (32) gradually decreases, and the inner diameter of the third measuring section (33) remains unchanged.

2. The measuring device according to claim 1, characterized in that, Along the depth direction of the measuring space (3), the first card plate portion (11) and / or the second card plate portion (12) within the measuring space (3) are sequentially a first horizontal segment, an inclined segment, and a second horizontal segment, wherein, The inclined section is inclined in the direction of the depth of the measuring space (3), and the first horizontal section and the second horizontal section are both parallel to the depth of the measuring space (3).

3. The measuring device according to claim 2, characterized in that, The length of the first horizontal section is 3 to 7 mm, the vertical length of the inclined section parallel to the depth direction of the measuring space (3) is 1 / 3 to 2 / 3 of the radius of the measured rolled round steel, and the length of the second horizontal section is 1 / 3 to 2 / 3 of the radius of the measured rolled round steel.

4. The measuring device according to claim 3, characterized in that, The measuring plate (1) is integrally formed from a steel plate, and its thickness is 5-10mm.

5. A measuring device according to claim 4, characterized in that, The measuring plate (1) is made of high-carbon manganese spring steel.

6. A measuring device according to claim 1, characterized in that, The second card plate part (12) is fixed to the connecting part (13). The connecting part (13) is provided with a slide (4). The extension direction of the slide (4) is perpendicular to the depth direction of the measuring space (3). One end of the first card plate part (11) is provided with a slider (5). The first card plate part (11) is slidably installed on the slide (4) by the slider (5). Furthermore, the first card plate part (11) can be positioned and installed on the slide (4) by a limiting member.

7. A measuring device according to claim 6, characterized in that, The slide (4) is a slide groove, and the connecting part (13) is provided with a plurality of pin holes (6) arranged at the same intervals; The limiting member is a locking pin. The first card plate (11) can slide to the pin hole (6) and be locked and fixed by the locking pin that extends into the pin hole (6).

8. A measuring device according to claim 7, characterized in that, The interval between the two adjacent pin holes (6) can be selected as 3 to 7 mm.

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