Rolling mill guard plate displacement detection device based on proximity switch

Abstract

The utility model discloses a rolling mill guard plate displacement detection device based on a proximity switch. The rolling mill guard plate displacement detection device comprises a weight, a connecting piece, the proximity switch, a check block, a sleeve, a fixing sleeve, a rotating wheel, a pin, a support, a support base, a welding bottom plate, a guide plate and a hydraulic cylinder. The support base is arranged at the upper end of the welding bottom plate, the support is arranged on the side of the support base, the rotating wheel is fixed to the support through a pin, one end of the connecting piece is connected with a heavy object, the other end of the connecting piece bypasses the rotating wheel to be connected with one end of the guard plate, and the other end of the guard plate is movably connected with the lower end of the guide plate. Holes are formed in the middles of the sleeves, the sleeves penetrate through the connecting piece and are fixed, and the check block is located between the two sleeves and tightly attached to the sleeves; the proximity switch is arranged on the side of the guide plate; the hydraulic cylinder is arranged between the guard plate and the guide plate, one end of the hydraulic cylinder is connected with the guard plate, and the other end of the hydraulic cylinder is connected with the guide plate. The device has the advantages of being small in occupied space, sensitive in guard plate detection action and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical machinery and equipment technology, specifically to a rolling mill guard plate displacement detection device based on a proximity switch. Background Technology

[0002] At present, the detection devices for the inlet and outlet guide plates of the rolling mill are arranged on both sides of the inlet and outlet guide plates. There are two main problems: (1) The wire rope breaks frequently, and after breaking, it loses the detection function of the guide plate, which poses a serious safety hazard to safe production; (2) The bracket occupies all the space on both sides. When maintaining the surrounding equipment, the detection device must be cut off before the operation, which seriously affects the maintenance efficiency and daily maintenance.

[0003] In traditional proximity switch solutions, the steel wire rope is prone to breakage due to long-term friction, leading to detection failure and posing a safety hazard. Furthermore, the support structure design is unreasonable, requiring disassembly for maintenance and impacting production efficiency. The utility model patent CN218424805U, entitled "A Real-time Position Detection Device for Rolling Mill Guard Plates," employs a displacement sensor and guide wheel system. While this enables continuous position detection, the external components (such as the displacement sensor and guide wheel) occupy a large space and require periodic calibration, resulting in high maintenance costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a rolling mill guard plate displacement detection device based on proximity switches. By using discrete position detection and structural optimization, it solves the problems of large space occupation, difficult maintenance and easy breakage of wire rope in the prior art. It can monitor the condition of the wire rope in real time and avoid production safety hazards.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a rolling mill guard plate displacement detection device based on a proximity switch, comprising:

[0006] Heavy objects, connectors, proximity switches, stops, sleeves, fixed sleeves, rotating wheels, pins, brackets, bracket bases, welded base plates, guide plates, and hydraulic cylinders.

[0007] A welding base plate is positioned at the top of the guide plate; a bracket base is positioned at the top of the welding base plate; two brackets are positioned on either side of the bracket base; a pin is positioned at the end of the bracket that is not in contact with the bracket base; a rotating wheel is fixed to the bracket by a pin; one end of a connector is connected to the weight, and the other end of the connector passes around the rotating wheel and connects to one end of the guard plate, while the other end of the guard plate is movably connected to the lower end of the guide plate; a fixing sleeve is located below the rotating wheel, passes through the connector, and is welded to the side of the guide plate; a sleeve is located below the fixing sleeve, and is fixed by passing through the connector through a hole in the middle of the sleeve; a stop block is located between the two sleeves and is tightly attached to the sleeves; a proximity switch is positioned on the side of the guide plate on the same side as the stop block; a hydraulic cylinder is positioned between the guard plate and the guide plate, with one end of the hydraulic cylinder connected to the guard plate and the other end connected to the guide plate.

[0008] Furthermore, the connector is a steel wire rope.

[0009] Furthermore, the welding base plate measures 500mm × 98mm × 35mm and is welded to the upper end of the guide plate.

[0010] Furthermore, the bracket base measures 500mm × 120mm × 20mm and is bolted to the upper end of the welded base plate. The bracket base is made of Q235 steel.

[0011] Furthermore, the bracket is welded to both sides of the bracket base by positioning.

[0012] Furthermore, there are two pins, which are set at the end of the bracket that is not in contact with the bracket base by means of a cotter pin to prevent detachment.

[0013] There are two rotating wheels, the surface of which is plated with hard chrome, and the rims are designed to prevent slippage.

[0014] Furthermore, the weight has dimensions of 200mm × 200mm × 40mm and is used to support the load on the wire rope.

[0015] Furthermore, the dimensions of the stop block are 50mm×80mm×10mm, and the sleeve is fixed to the connector by bolts, with two sleeves in total.

[0016] Furthermore, the proximity switch is fixed on the side of the guide plate by means of a pipe clamp.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0018] The rolling mill guard plate displacement detection device proposed in this utility model can free up limited space, improve maintenance efficiency, and occupy little space, making it convenient for equipment maintenance. In addition, it has sensitive detection action, long service life, and can save costs.

[0019] The rolling mill guard plate displacement detection device proposed in this utility model reduces the risk of wire rope breakage, extends service life, and quickly triggers alarms through discrete position detection, avoiding the complex deployment of continuous sensors. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the present invention. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., 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 invention 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. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this invention. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the scope of protection of this invention.

[0023] To achieve the above objectives, this utility model proposes a rolling mill guard plate displacement detection device based on a proximity switch, such as... Figure 1 As shown, it includes a weight, a wire rope (with a connector at the top), a proximity switch, a stop, a sleeve, a fixed sleeve, a rotating wheel, a pin, a bracket, a bracket base, a welded base plate, a guide plate, and a hydraulic cylinder.

[0024] A 500mm×98mm×35mm welding base plate is welded to the upper part of the guide plate. A 500mm×120mm×20mm bracket base, made of Q235 steel, is bolted to the upper part of the welding base plate. Two brackets are used, positioned on both sides of the bracket base via positioning welding. Two pins are used, secured to the end of the bracket not in contact with the bracket base using cotter pins to prevent detachment. Two rotating wheels are used, with hard chrome plated surfaces and anti-detachment grooves on the rims. These wheels are fixed to the brackets by pins. The two rotating wheels guide and support the wire rope, primarily preventing it from rubbing against the guide plate and affecting its service life. One end of the wire rope is connected to a 200mm×200mm×40mm weight as its load. The other end of the wire rope passes over the rotating wheels and connects to one end of the guard plate, which is movably connected to the lower end of the guide plate. A fixing sleeve is located below the rotating wheels, passes through the wire rope, and is welded to the side of the guide plate. Two sleeves are used, located below the fixed sleeve. A steel wire rope is threaded through a hole drilled in the center of each sleeve and secured with bolts. A stop block measuring 50mm × 80mm × 10mm is positioned between the two sleeves, flush against them. The direction of the stop block can be adjusted by changing the angle of the sleeves, facilitating proximity switch detection. The proximity switch is mounted on the side of the guide plate using a pipe clamp, on the same side as the stop block. A hydraulic cylinder is positioned between the guard plate and the guide plate, with one end connected to the guard plate and the other end connected to the guide plate.

[0025] The process of detecting the displacement of the mill guard plate using a proximity switch-based guard plate displacement detection device is as follows:

[0026] When the guard plate moves downward, the steel wire rope fixed to the guard plate is displaced. The steel wire rope drives the weight upward. When the stop block reaches the position of the proximity switch, the proximity switch receives the detection signal and alarms, effectively reducing the risk of the steel wire rope breaking due to the design optimization.

[0027] The mill guard plate displacement detection device based on proximity switches proposed in this invention has advantages such as small footprint, sensitive detection of guard plate movement, and long service life. Since its commissioning, there have been no instances of wire rope breakage causing production safety hazards due to the lack of detection devices. It employs discrete detection using a combination of proximity switches and stops, replacing the continuous displacement sensor in existing patents, thus reducing complexity.

[0028] Furthermore, the integrated design of the welded base plate and support base reduces lateral space occupation and adds an inspection window. The hard chrome-plated rotating wheel and wire rope fixing sleeve design significantly reduce wear. The adjustable stop position allows for calibration of the testing points without disassembly.

[0029] Benefits: Since its commissioning, there have been no instances of wire rope breakage, and sufficient space has been provided on both sides for inspection and maintenance. Assuming one breakage per year reduces costs associated with undetected wire rope breakage leading to steel pile-up issues: 760,000 yuan. Annual maintenance time savings of at least 4 hours after commissioning directly generate profit: approximately 80,000 yuan. Total: 840,000 yuan.

[0030] In subsequent management, we will strengthen equipment inspection and special inspections, and utilize maintenance to conduct special inspections and maintenance.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A proximity switch based displacement detection device for a mill guard, characterized in that, The utility model relates to a kind of steel wire rope tensioning device, including: Weight, connecting piece, proximity switch, stop block, sleeve, fixed sleeve, rotating wheel, pin, support, support base, welding base plate, guide plate and hydraulic cylinder; Welding base plate is set on the upper end of guide plate;Support base is set on the upper end of welding base plate;Support is set on the side of support base;Pin is set on the end of support not in contact with support base;Rotating wheel is fixed on support through pin;One end of connecting piece is connected with weight, the other end of connecting piece is connected with the one end of welding base plate around rotating wheel, the other end of welding base plate is movably connected with the lower end of guide plate;Fixed sleeve is located below rotating wheel, fixed sleeve passes through connecting piece and is welded on the side of guide plate;Sleeve is two, sleeve is located below fixed sleeve, sleeve is fixed by being passed through connecting piece through the hole in the middle of sleeve, stop block is located in the middle of two sleeves and close to sleeve;Proximity switch is set on the side of guide plate on the same side with stop block;Hydraulic cylinder is set between welding base plate and guide plate, one end of hydraulic cylinder is connected with welding base plate, the other end of hydraulic cylinder is connected with guide plate.

2. A proximity switch based displacement detection device for a mill guard according to claim 1, characterized in that, Connecting piece is steel wire rope.

3. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Welding base plate is 500mm×98mm×35mm in size, and is set on the upper end of guide plate by welding.

4. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Support base is 500mm×120mm×20mm in size, and is set on the upper end of welding base plate by bolt, and support base is Q235 steel.

5. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Support is two, and support is positioned and welded on both sides of support base.

6. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Pin is two, and pin is set on the end of support not in contact with support base by way of open pin anti-disengagement.

7. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Rotating wheel is two, rotating wheel surface is plated with hard chromium, and rim is provided with anti-disengagement groove.

8. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Weight is 200mm×200mm×40mm in size, and is used for load of steel wire rope.

9. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Stop block is 50mm×80mm×10mm in size, and sleeve is fixed on connecting piece by bolt.

10. The proximity switch based displacement detection device for a mill guard of claim 1, wherein, Proximity switch is set on the side of guide plate by pipe clamp fixing mode.

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