Continuous casting steel billet arrival recognition device

Abstract

The utility model relates to a continuous casting steel billet arrival recognition device which comprises a detection roller, a parallelogram connecting rod mechanism, a bearing base, a proximity switch, stop iron, a heavy hammer and a limiting block. In the using process, when a steel billet passes, the detection roller is pressed down, the parallelogram connecting rod mechanism is driven to move downwards, the stop iron reaches the position of the proximity switch, the proximity switch sends out a signal, and the steel billet arrival recognition function is completed. The steel billet detection device can reliably identify the arrival of the steel billet in a high-temperature and steam environment, and has the characteristics of simple structure, reliable performance, low manufacturing cost, easiness in replacement of parts, high detection precision and low false detection rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous casting machine control in the metallurgical industry, and more specifically relates to an arrival identification device for continuous casting steel billets. Background Art

[0002] Tangshan Iron and Steel's Long Products Division is equipped with four small billet continuous casting machines. After the billet is formed from the crystallizer, it is pulled out by the straightening machine and becomes a billet with a fixed length or weight through the shearing system. The billet passes through the conveyor roller, billet discharge roller, billet transfer car and cross-over (direct supply) roller before leaving the continuous casting machine. With the continuous improvement of modern automatic control technology and information technology, billet tracking is a necessary function, and the position detection of all billets has become extremely important.

[0003] In the past, there were several methods used to identify steel billets: photoelectric beam-based, laser ranging, and mechanical ball-impacting. Among them, the photoelectric beam-based method must be installed on both sides of the steel billet, but the space between the casting strands of small square billets is limited, and the beam-based sensor must be very close to the hot billet, which is easily damaged by high temperature. The laser ranging method can be installed at a distance, away from heat sources, but due to the evaporation of open-circuit water on the roller table, a large amount of fog will be generated in winter, seriously affecting the signal reliability. Although the mechanical ball-impacting method is not afraid of high temperature and fog, the oxidation of the contact surface will also lead to unreliable signals. Therefore, it is necessary to study a stable and reliable steel billet arrival identification device that can be used normally in harsh environments. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a continuous casting billet arrival identification device, which can avoid the disadvantages of the above-mentioned forms and has the characteristics of simplicity and reliability.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] A continuous casting steel billet arrival identification device comprises a parallelogram linkage mechanism, a detection roller rotatably connected to the upper left corner of the parallelogram linkage mechanism, a bearing base rotatably connected to the upper right corner of the parallelogram linkage mechanism, a roller table for fixing the bearing base, an iron stop installed at the bottom of the lower left side of the parallelogram linkage mechanism, a proximity switch matched with the iron stop, a heavy hammer fixedly installed at the lower right side of the parallelogram linkage mechanism, and a limiting block installed on the movement trajectory of the heavy hammer, wherein the detection roller matches with the steel billet, and the bearing base is installed on the roller table of the steel billet.

[0007] Furthermore, a weight is extended and installed at the lower right side of the parallelogram linkage mechanism, and the extended length of the weight is 2 to 4 times the distance between the detection roller and the bearing base.

[0008] Furthermore, the proximity switch is a travel switch.

[0009] Furthermore, the limiting block is round steel.

[0010] Furthermore, the weight is rectangular.

[0011] Further, the stop iron is vertically installed at the lower left bottom of the parallelogram linkage mechanism.

[0012] Furthermore, the stop iron is an I-beam or an angle steel.

[0013] Furthermore, the detection roller is a steel roller.

[0014] Due to the adoption of the above technical scheme, the beneficial effects achieved by the utility model are as follows: the device is not afraid of high temperature and fog, and will not have problems such as contact surface oxidation and unreliable signals. It can reliably identify the arrival of steel billets in high temperature and steam environments, and has the characteristics of simple structure, easy installation, reliable performance, low manufacturing cost, easy replacement of parts, high detection accuracy, and low false detection rate. It can be used normally in harsh environments, has considerable benefits, and has extremely high value for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the principle diagram of the state when the steel billet has not arrived in the device;

[0016] Figure 2 This is the principle diagram of the state when the billet arrives in this device;

[0017] Among them: roller table 1, detection roller 2, parallelogram linkage mechanism 3, bearing base 4, steel billet 5, proximity switch 6, stop iron 7, limit block 8, heavy hammer 9. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the embodiments.

[0019] A continuous casting billet arrival identification device, such as Figure 1 It includes a parallelogram linkage mechanism 3, a detection roller 2 rotatably connected to the upper left corner of the parallelogram linkage mechanism 3, a bearing base 4 rotatably connected to the upper right corner of the parallelogram linkage mechanism 3, a stopper iron 7 installed at the bottom of the lower left of the parallelogram linkage mechanism 3, a proximity switch 6 matched with the stopper iron 7, a heavy hammer 9 fixedly installed at the lower right of the parallelogram linkage mechanism 3, and a limiting block 8 installed on the movement trajectory of the heavy hammer 9. The detection roller 2 cooperates with the steel billet 5, and the bearing base 4 is fixedly installed on the roller table 1 of the steel billet 5.

[0020] The parallelogram linkage mechanism 3 is a parallelogram structure, such as Figure 1 The four parallel sides can rotate, so that the parallelogram linkage mechanism 3 can be transformed into various shapes and has the characteristics of flexibility. This structure ensures the movement of the heavy hammer 9.

[0021] The weight 9 is extended and installed at the lower right of the parallelogram linkage 3, and the extension length of the weight 9 is 2 to 4 times the distance between the detection roller 2 and the bearing base 4. Figure 1 In the equation, take 2 times, that is, if the distance between the detection roller 2 and the bearing base 4 is a, the distance between the lower left side of the parallelogram linkage 3 and the weight 9 is 3a.

[0022] The proximity switch 6 is a travel switch and can be a Schneider series travel switch.

[0023] In order to facilitate material acquisition, the limiting block 8 is round steel; the weight 9 is rectangular and has a relatively large mass; the stop iron 7 is an I-beam or an angle steel; and the detection roller 2 is a steel roller.

[0024] exist Figure 2 In the figure, the stopper iron 7 is vertically installed at the lower left bottom of the parallelogram linkage 3. It can be seen that the stopper iron 7 is relatively long, which is convenient for the sensing of the proximity switch 6.

[0025] The recognition principle of this device:

[0026] The detection roller 2 is located on the parallelogram linkage 3, which is mounted on the roller table 1 beam by the bearing base 4. The steel billet 5 moves to the left on the roller table 1 and does not reach the identification device. Figure 1 As shown in FIG. 1 , due to the weight of the weight hammer 9, the parallelogram linkage 3 is in an ascending state, and the limit block 8 is used to control the ascending amount. At this time, the stopper 7 is outside the detection area of ​​the proximity switch 6, and the proximity switch 6 has no output; when the billet 5 reaches the position of the detection roller 2, as shown in FIG. Figure 2 As shown, the detection roller 2 is pressed down, the parallelogram linkage 2 descends, the stopper 7 enters the detection area of ​​the proximity switch 6, and the proximity switch 6 outputs a signal, thereby realizing the billet arrival recognition function.

[0027] Therefore, the utility model can reliably identify the arrival of the steel billet 5 in a high temperature and steam environment, and has the characteristics of simple structure, reliable performance, high detection accuracy and low false detection rate, and is suitable for large-scale promotion.

Claims

1. A continuous casting billet arrival identification device, characterized in that: The invention comprises a parallelogram linkage mechanism (3), a detection roller (2) rotatably connected to the upper left corner of the parallelogram linkage mechanism (3), a bearing base (4) rotatably connected to the upper right corner of the parallelogram linkage mechanism (3), an iron stopper (7) mounted at the bottom of the lower left corner of the parallelogram linkage mechanism (3), a proximity switch (6) matched with the iron stopper (7), a weight (9) fixedly mounted at the lower right corner of the parallelogram linkage mechanism (3), and a limiting block (8) mounted on the motion track of the weight (9), wherein the detection roller (2) is matched with the steel billet (5), and the bearing base (4) is mounted on a roller table (1) of the steel billet (5).

2. The continuous casting billet arrival identification device according to claim 1, characterized in that: The weight (9) is extended and installed at the lower right side of the parallelogram linkage (3), and the extended length of the weight (9) is 2 to 4 times the distance between the detection roller (2) and the bearing base (4).

3. The continuous casting billet arrival identification device according to claim 1, characterized in that: The proximity switch (6) is a travel switch.

4. The continuous casting billet arrival identification device according to claim 1, characterized in that: The limiting block (8) is made of round steel.

5. The continuous casting billet arrival identification device according to claim 1, characterized in that: The weight (9) is rectangular.

6. A continuous casting billet arrival identification device according to any one of claims 1 to 5, characterized in that: The stopper (7) is vertically mounted at the lower left bottom of the parallelogram linkage (3).

7. The continuous casting billet arrival identification device according to claim 6, characterized in that: The stop iron (7) is an I-beam or an angle steel.

8. The continuous casting billet arrival identification device according to claim 1, characterized in that: The detection roller (2) is a steel roller.

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