Hot rolling H-shaped steel heating furnace area furnace door position detection device
By using a furnace door position detection device composed of components such as a hook ring, a fixed pulley, and a steel wire rope in a hot-rolled H-beam heating furnace, the problem of unstable detection devices in high-temperature environments is solved, and more stable and low-cost furnace door position detection is achieved, reducing maintenance difficulty and cost.
Patent Information
- Application Number
- CN202423110098.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-12-17
AI Technical Summary
The existing hot-rolled H-beam heating furnace door position detection device is unstable in high-temperature environments, resulting in frequent damage to the cam switch, affecting steel tapping operations and increasing maintenance costs.
The detection device is composed of components such as a hook, a fixed pulley, a wire rope, a weight, an inductive limit switch, and an angle steel bracket. The weight is connected to the plate chain via a wire rope, and the vertical movement of the weight is used to detect the position of the furnace door, separating the detection components from the mechanical equipment to reduce environmental interference.
It improves the stability of the detection device, extends its service life, reduces maintenance costs and labor intensity, and enhances the safety and ease of operation of the equipment.
Smart Images
Figure CN223388964U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for detecting the position of a furnace door in a hot-rolled H-shaped steel heating furnace area, and belongs to the technical field of steel rolling equipment in the metallurgical industry. Background Art
[0002] The door of the heating furnace in a steel plant is generally equipped with a cam switch on the top of the door frame to detect the door position, which has realized the automatic control of the furnace door. However, the cam switch for detecting the door position of the heating furnace is close to the furnace door, where the temperature is high or there is a risk of door leakage. It is in a high temperature environment for a long time, and the stability of the mechanical equipment to be detected is poor. The cam switch is frequently damaged, thus affecting steel production. It is very difficult to repair, which increases the maintenance cost and labor intensity. In addition, the door shaking position detection often generates false signals. Utility Model Content
[0003] The purpose of the utility model is to provide a hot-rolled H-shaped steel heating furnace area furnace door position detection device, which eliminates the instability of the equipment, extends the service life of the detection element, reduces maintenance costs and labor intensity, and solves the problems existing in the background technology.
[0004] The technical solution of the utility model is:
[0005] A device for detecting the position of a furnace door in the area of a hot-rolled H-shaped steel heating furnace comprises a hook ring, a fixed pulley, an angle steel bracket, a steel wire rope, a weight, an inductive limit switch, an angle steel, a plate chain, a hydraulic cylinder, gear one, gear two, gear three and a heating furnace door, wherein gear one, gear two and gear three are arranged in sequence above the heating furnace door, gear one, gear two and gear three are matched with the plate chain, one end of the plate chain is connected to the heating furnace door, and the other end is connected to the hydraulic cylinder; angle steel is welded to the side of the plate chain, a hook ring is welded on the side of the angle steel close to the hydraulic cylinder, one end of the steel wire rope is connected to the hook ring, and the other end is connected to the weight after passing through the fixed pulley; the angle steel bracket is a cylindrical structure, the weight is arranged inside the angle steel bracket, and multiple inductive limit switches are arranged up and down on the side of the angle steel bracket; when the weight approaches the uppermost inductive limit switch, the heating furnace door reaches the lower limit position, and when the weight approaches the lowermost inductive limit switch, the heating furnace door reaches the upper limit position.
[0006] The hydraulic cylinder includes a hydraulic cylinder body and a hydraulic cylinder rod. The hydraulic cylinder body is connected to the hydraulic cylinder rod. A hydraulic cylinder rod head is provided at the end of the hydraulic cylinder rod. The hydraulic cylinder is connected to the other end of the plate chain through the hydraulic cylinder rod head. The hydraulic cylinder drives the heating furnace door to descend and ascend through the extension and contraction of the hydraulic cylinder rod, thereby closing or opening the heating furnace door.
[0007] The second gear is connected to the heating furnace door through a chain.
[0008] The cross section of the angle steel bracket is rectangular.
[0009] The heavy hammer, inductive limit switch, angle steel, plate chain, hydraulic cylinder, gear 1, gear 2 and gear 3 and other equipment are all well-known and commonly used equipment in the field.
[0010] The beneficial effects of the utility model are: eliminating the instability of the equipment, extending the service life of the detection element, and having the characteristics of simple processing, low cost, easy maintenance and operation, and high safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the structure of the utility model;
[0012] Figure 2 This is a top view of the utility model;
[0013] In the figure: hook 1, fixed pulley 2, angle steel bracket 3, wire rope 4, heavy hammer 5, inductive limit switch 6, angle steel 7, leaf chain 8, hydraulic cylinder 9, hydraulic cylinder rod 10, hydraulic cylinder rod head 11, gear 1 12, gear 2 13, gear 3 14, chain 15, heating furnace body 16, heating furnace door 17. DETAILED DESCRIPTION
[0014] The present invention will be further described below with reference to the accompanying drawings and through examples.
[0015] A hot-rolled H-beam heating furnace door position detection device comprises a hook ring 1, a fixed pulley 2, an angle steel bracket 3, a steel wire rope 4, a weight 5, an inductive limit switch 6, an angle steel 7, a plate chain 8, a hydraulic cylinder 9, a gear 12, a gear 2 13, a gear 3 14 and a heating furnace door 17. Gear 1 12, gear 2 13 and gear 3 14 are arranged above the heating furnace door 17 in sequence. Gear 1 12, gear 2 13 and gear 3 14 are all matched with the plate chain 8. One end of the plate chain 8 is connected to the heating furnace door 17, and the other end is connected to the hydraulic cylinder 9. Connection; Angle steel 7 is welded on the side of the plate chain 8, and a hook ring 1 is welded on the side of the angle steel 7 close to the hydraulic cylinder 9. One end of the wire rope 4 is connected to the hook ring 1, and the other end is connected to the weight 5 after passing through the fixed pulley 2; The angle steel bracket 3 is a cylindrical structure, and the weight 5 is arranged inside the angle steel bracket 3. A plurality of inductive limit switches 6 are arranged on the upper and lower sides of the angle steel bracket 3. When the weight 5 is close to the uppermost inductive limit switch 6, the heating furnace door 17 reaches the lower limit position. When the weight 5 is close to the lowermost inductive limit switch 6, the heating furnace door 17 reaches the upper limit position.
[0016] The hydraulic cylinder 9 includes a hydraulic cylinder body and a hydraulic cylinder rod 10. The hydraulic cylinder body is connected to the hydraulic cylinder rod 10. A hydraulic cylinder rod head 11 is provided at the end of the hydraulic cylinder rod 10. The hydraulic cylinder 9 is connected to the other end of the plate chain 8 through the hydraulic cylinder rod head 11. The hydraulic cylinder 9 drives the heating furnace door 17 to descend and ascend through the extension and contraction of the hydraulic cylinder rod 10, thereby closing or opening the heating furnace door 17.
[0017] The second gear 13 is connected to the heating furnace door 17 through a chain 15 .
[0018] The cross section of the angle steel bracket 3 is rectangular.
[0019] During operation, as the heating furnace door 17 rises and falls under the influence of the hydraulic cylinder, the wire rope 4 is connected to the angle steel 7 on the side of the leaf chain 8 via a shackle 1. The wire rope, passing through the fixed pulley 2 and the angle steel bracket 3, converts horizontal motion into vertical motion. The leaf chain 8 advances, driving the weight 5 upward until it reaches the uppermost position of the inductive proximity switch 6, detecting that it has reached the upper limit. The same process occurs for the lowering operation. The present invention utilizes a flexible connection between the wire rope and the moving device (weight), eliminating interference from the device itself with the detection component and ensuring more stable detection. In particular, the shackle provides a more stable mounting position than directly attaching it to the rod head of the hydraulic cylinder, which is prone to rotation and could cause the detection position to shift. Furthermore, the shackle facilitates quick replacement of pre-prepared wire ropes, reducing maintenance time. Application of the present invention in harsh environments with high temperatures and humidity, or in locations that are particularly difficult to maintain, allows the device to be separated from the detection component, ensuring the integrity and maintenance of the detection equipment.
[0020] The utility model eliminates the problems caused by the instability of mechanical equipment to detection by changing the installation position of the detection element, and uses a flexible device such as a wire rope to move the detection element to an area with a better environment and conducive to maintenance, thereby eliminating mechanical instability.
Claims
1. A device for detecting the position of a furnace door in a hot-rolled H-beam heating furnace, characterized in that: The invention comprises a hook (1), a fixed pulley (2), an angle steel bracket (3), a wire rope (4), a weight (5), an inductive limit switch (6), an angle steel (7), a plate chain (8), a hydraulic cylinder (9), a gear 1 (12), a gear 2 (13), a gear 3 (14) and a heating furnace door (17). Gear 1 (12), gear 2 (13) and gear 3 (14) are arranged above the heating furnace door (17) in sequence. Gear 1 (12), gear 2 (13) and gear 3 (14) are all connected to the plate chain (8). Matching, one end of the plate chain (8) is connected to the heating furnace door (17), and the other end is connected to the hydraulic cylinder (9); the side of the plate chain (8) is welded with an angle steel (7), and the side of the angle steel (7) close to the hydraulic cylinder (9) is welded with a hook ring (1), one end of the wire rope (4) is connected to the hook ring (1), and the other end is connected to the weight (5) after passing through the fixed pulley (2); the angle steel bracket (3) is a cylindrical structure, the weight (5) is set inside the angle steel bracket (3), and a plurality of inductive limit switches (6) are arranged on the upper and lower sides of the angle steel bracket (3).
2. The hot-rolled H-beam heating furnace door position detection device according to claim 1, characterized in that: The hydraulic cylinder (9) comprises a hydraulic cylinder body and a hydraulic cylinder rod (10), the hydraulic cylinder body is connected to the hydraulic cylinder rod (10), a hydraulic cylinder rod head (11) is provided at the end of the hydraulic cylinder rod (10), and the hydraulic cylinder (9) is connected to the other end of the plate chain (8) via the hydraulic cylinder rod head (11).
3. A hot-rolled H-beam heating furnace door position detection device according to claim 1 or 2, characterized in that: The second gear (13) is connected to the heating furnace door (17) via a chain (15).
4. A hot-rolled H-beam heating furnace door position detection device according to claim 1 or 2, characterized in that: The cross section of the angle steel bracket (3) is rectangular.