Adjustable limiting trigger device for electric furnace body stabilizer

Abstract

The utility model provides an adjustable limit trigger device for an electric furnace body stabilizer, which comprises a trigger surface capable of being contacted with a roller of a limiter, the trigger surface is a cambered surface, and the acting surface of the cambered surface is a convex surface part of the cambered surface. The arc-shaped contact surface is designed on the trigger contact surface, so that the arc-shaped contact surface and a roller of the limiter can realize effective rolling friction, the impact on the limiter is reduced after the downward pressure is reduced, and the failure rate of the limiter is greatly reduced; and by realizing an adjustable structure of the telescopic rod and the arc plate, the problems of adjustment difficulty, replacement difficulty and maintenance difficulty caused by damage and errors of the limiting contact mechanism caused by the field environment can be better solved.

Description

Technical Field

[0001] The utility model relates to a limit trigger device which is installed on one side of a stabilizer of an electric furnace body and is used for locating the stabilizer. Background Art

[0002] For the furnace stabilizer used in the electric furnace plant, the stabilizer detects whether the furnace body has reached the horizontal position by erecting and tilting. The furnace stabilizer is a cylindrical structure installed on the fixed structure next to the furnace body. When the stabilizer is erected and triggers the limit signal to confirm whether the furnace body has reached the horizontal requirement, the erection and tilting of the stabilizer are used by the trigger device installed on the stabilizer in conjunction with the limit switch. When the trigger position is reached and the limit switch is contacted to achieve the trigger condition, the information that the furnace body is in the horizontal position is fed back in the system.

[0003] The current stabilizer trigger device is a long rod welded to the stabilizer body, with a square iron plate welded to the other end of the long rod. When the stabilizer is erected or tilted, it is used to collide with the limiter so that the limiter receives a trigger signal. However, due to the serious dust and slag in electric furnace smelting, they cause great damage to the limiter and the limit trigger device body, and are prone to deformation and other problems. Due to structural design reasons and welding fixation reasons, the original stabilizer trigger device is difficult to adjust after damage and deformation, and the matching accuracy is greatly reduced, which will cause the limit signal to be inaccurate or ineffective. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide an adjustable limit trigger device for an electric furnace body stabilizer which can better adapt to the problems of adjustment difficulties and replacement and maintenance difficulties caused by damage and errors to the limit contact mechanism caused by the on-site environment.

[0005] The technical problem to be solved can be implemented through the following technical solutions.

[0006] An adjustable limit trigger device for an electric furnace body stabilizer comprises a trigger surface that can contact with a roller of the limiter, and is characterized in that the trigger surface is an arc surface, and the action surface of the arc surface is its convex portion.

[0007] Furthermore, the trigger surface is formed on a trigger body, and the trigger body is connected to the stabilizer via a telescopic member.

[0008] Preferably, the telescopic member is a telescopic rod.

[0009] Preferably, the center of the arc surface falls on the telescopic rod or its extension line.

[0010] Furthermore, the trigger body includes a base and an adjusting portion positioned on the base, the relative position of the adjusting portion with respect to the base is adjustable, and an end surface of the adjusting portion away from the base forms the trigger surface.

[0011] Furthermore, the base is connected to the telescopic member.

[0012] Preferably, the adjusting portion is an arc piece.

[0013] Furthermore, the adjusting portion is positioned on the base via an adjusting screw.

[0014] Furthermore, the direction of the adjusting screw is parallel to the direction of the telescopic member.

[0015] Preferably, the main body of the base is another arc piece, and the curvatures of the two arc pieces are the same.

[0016] The appearance structure and various functions of the adjustable limit trigger device of the utility model are mainly considered in the following aspects:

[0017] 1. The on-site installation position of the furnace body stabilizer and the adjustable limit trigger device is located 1 meter from the side of the electric furnace body, close to the steel outlet after the molten steel smelting is completed. Therefore, there are harsh environmental factors such as high temperature and liquid slag splashing. In addition, the contact part of one of the components of the utility model, namely the trigger, is seriously affected by the slag splashing and adhesion. It often happens that the slag splashes to the contact part of the trigger, causing abnormal deformation or damage to the contact part. The utility model overcomes the influence of high temperature and slag on the equipment, and can effectively avoid the problems caused by such environment by increasing the contact area and designing the structure with a circular arc shape.

[0018] 2. The utility model is located at a high position near the side of the furnace, and the limiter cannot be effectively fixed and installed on the side. Therefore, the limiter can only be installed on the original concrete foundation. The utility model is installed on the body of the stabilizer to achieve a coordinated use mode under limited conditions.

[0019] The utility model overcomes the defects of the existing furnace body stabilizer limit trigger displacement stroke device which is difficult to adjust, the low matching accuracy of the trigger device and the limiter, and the large impact on the contact surface between the trigger device and the limiter, and solves the problem of position signal triggering errors of the furnace body stabilizer caused by environmental factors such as on-site dust and slag, and can effectively avoid major safety accidents of the equipment.

[0020] By designing an arc-shaped contact surface on the trigger contact surface, effective rolling friction can be achieved between it and the roller of the limiter. When the downforce is reduced, the impact on the limiter is reduced, thereby greatly reducing the failure rate of the limiter. By realizing an adjustable structure of the telescopic rod and the arc plate, the problem of difficulty in adjustment and replacement and maintenance caused by damage and errors to the limit contact mechanism caused by the on-site environment can be better adapted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an adjustable limit trigger device for an electric furnace body stabilizer according to the utility model;

[0022] Figure 2 for Figure 1 A schematic side view of

[0023] In the figure: 1. telescopic rod; 2. stabilizer; 3. bolt hole; 4. arc base; 5. arc sheet; 6. screw; 7. limiter; 8. equipment foundation base. DETAILED DESCRIPTION

[0024] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides a stabilizer limit trigger device which is composed of an adjustable iron plate with an arc-shaped contact surface and an adjustable telescopic iron rod as basic materials. Figure 1 and Figure 2 One end of the telescopic rod 1 with adjustable length is connected and positioned on the stabilizer 2, and the other end is fixed on the arc base 4; the arc base 4 is connected to the arc piece 5 via an adjustable screw 6, and the distance between the arc base 4 and the arc piece 5 can be adjusted by adjusting the screw 6 (equivalent to the thickness of the arc-shaped component composed of the arc base 4 and the arc piece 5 being adjustable, the chord length of the arc piece 5 and the arc base 4 is 150mm, the radius of the circle is 500mm, and the width is 80mm), and the arc surface center of the arc piece 5 and the arc base 4 falls on one side of the telescopic rod, that is, the outer arc surface of the arc piece 5 is facing the stopper 7. That is, the arc-shaped component substantially forms a trigger body, and the position-adjustable arc piece 5 has a trigger surface, which is formed on the convex side of the arc surface of the arc piece.

[0026] The contact surface of the device of the utility model with the limiter is changed from the original straight plate to the current arc piece 5 as the contact surface. Such a design can effectively reduce the contact impact force between the limiter and the limit roller. Figure 1The mechanism shown in the figure is the assembly diagram of the trigger device. Its installation composition is as follows: the adjustable telescopic rod 1 is one of the main parts, and the adjustable telescopic rod 1 has a length extension compensation function. When the telescopic rod 1 is extended to the required length, the adjustable telescopic rod 1 is fastened by bolts through the bolt holes 3 for adjustment and fixing on the adjustable telescopic rod 1. The adjustable telescopic rod 1 is welded with an adjustable arc plate. The adjustable arc plate (i.e., the trigger body) is composed of an arc base 4 and an arc sheet 5. The screw 6 on the arc sheet is fixed to the arc base 4 by tightening with a nut. The screw on the arc sheet is axially extended and tightened with the nut, so as to adjust the height (i.e., the relative distance) of the arc sheet 5 and the arc base 4. The main body of the arc base 4 is also an arc sheet, and the arc of the arc sheet is preferably consistent with that of the arc sheet 5.

[0027] When the stabilizer 2 is erected or tilted, the limit trigger device assembly on the stabilizer 2 rotates with the stabilizer. When the stabilizer is erected, the limit trigger device contacts the limiter 7 arranged on the base 8 of the equipment foundation, triggering the limit signal. The coordination between the device of the utility model and the limiter can refer to Figure 2 shown.

[0028] The utility model device has the following characteristics:

[0029] 1. The utility model has a simple design structure, is easy to disassemble and install quickly on site, and has light and durable materials and strong versatility. It is especially suitable for the metallurgical industry with a tight production rhythm, and gives full play to the small, fast and flexible characteristics of the utility model.

[0030] 2. The entire design structure has balanced force and stable operation, which can effectively extend the service life of the limiter and limit trigger device.

Claims

1. An adjustable limit trigger device for an electric furnace body stabilizer, comprising a trigger surface that can contact with a roller of the limiter, characterized in that: The trigger surface is a curved surface, and the active surface of the curved surface is a convex portion thereof; The trigger surface is formed on a trigger body, and the trigger body is connected to the stabilizer via a telescopic member; The trigger body includes a base and an adjusting portion positioned on the base, wherein the relative position of the adjusting portion relative to the base is adjustable, and an end surface of the adjusting portion away from the base forms the trigger surface; The adjusting part is a circular arc piece, and the adjusting part is positioned on the base via an adjusting screw; the base is connected to the circular arc piece via an adjustable adjusting screw, and the thickness of the arc-shaped component composed of the base and the circular arc piece can be adjusted by adjusting the adjusting screw; The direction of the adjusting screw is parallel to the direction of the telescopic member.

2. The adjustable limit trigger device for an electric furnace body stabilizer according to claim 1, characterized in that: The telescopic member is a telescopic rod.

3. The adjustable limit trigger device for an electric furnace body stabilizer according to claim 2, characterized in that: The center of the arc surface falls on the telescopic rod or its extension line.

4. The adjustable limit trigger device for an electric furnace body stabilizer according to claim 1, characterized in that: The base is connected to the telescopic member.

5. The adjustable limit trigger device for an electric furnace body stabilizer according to claim 1, characterized in that: The main body of the base is another arc piece, and the curvatures of the two arc pieces are the same.

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