Proximity switch installation detection device

Abstract

The utility model relates to a proximity switch installation detection device which comprises a lifting baffle, a steel wire rope, a screw hole, a weight fixing protection device, a nut, a weight, a proximity switch protection plate, a proximity switch installation support, a baffle ascending position proximity switch and a baffle descending position proximity switch. According to the device, a steel wire rope traction mode is adopted, a proximity switch which is originally designed in a severe environment is transferred to a position which is good in environment and convenient to maintain to be installed, the problems that many original proximity switches are designed in the aspects of high temperature, large water vapor, high installation position and inconvenient to maintain are solved, and finally production accidents are reduced, and the damage rate of the switch is reduced. The device is simple in design and high in practicability, and can be popularized and used for transformation of any proximity switch position installed in a severe environment.

Description

Technical Field

[0001] This patent application belongs to the technical field of sensor installation detection devices, and more specifically, relates to the manufacture of a proximity switch installation detection device. Background Art

[0002] A proximity switch is a device that can sense the proximity of an object. It uses the displacement sensor's sensitive characteristics to the approaching object to identify the object's approach and output the corresponding switch signal. Therefore, the proximity sensor is usually called a proximity switch. It is a general term for sensors that replace contact detection methods such as switches and are designed to detect objects without contacting the object being detected. It can detect the movement and existence information of the object and convert it into an electrical signal. In the steelmaking production workshop, some detection switches were originally designed to be installed near high temperature and water vapor, and the installation location was dangerous and inconvenient for maintenance. They could not be repaired or replaced during the production process. The stability of these detection switches is crucial to the production stability of the production line.

[0003] The proximity switch involved in this patent application is used to detect the rising and falling position of the lifting baffle between the two rollers of the continuous casting machine. In the case of automatic steel feeding, the hot billet often stays next to the baffle waiting. Due to the high temperature in this area, the billet temperature is about 900 degrees, and there is equipment cooling water around to create a large water vapor field environment. The working environment of the proximity switch is very bad and it is easy to fail. The original design of the proximity switch is installed in a protective cover 30cm away from the hot billet. The temperature in the protective cover reaches 80°~120° and is accompanied by water vapor. The proximity switch and the tail cable are often burned. After the switch is loose or damaged, it cannot be replaced during the production process, resulting in the billet discharge area cannot be automatically operated. The operator can only use manual operation, which not only increases the workload, but also is prone to operating errors, resulting in frequent accidents in this area. Every time a switch signal problem occurs, it can only be replaced after the production is stopped. The inspection and replacement process requires the disassembly of the protective cover. In addition, the installation position of the switch is 3.2m above the ground. The replacement of the switch requires going under the roller pit and standing on the ladder to operate. There are also great safety hazards in the operation process. Utility Model Content

[0004] The purpose of the utility model is to provide a proximity switch installation detection device that is easier to install and maintain in view of the drawbacks of the existing installation position, and can better and more effectively ensure the stable and efficient operation of the proximity switch in harsh environments such as high temperature and water vapor. It has the characteristics of being waterproof and scalding-proof, extending the service life of the equipment, and being easy to maintain. The utility model is simple to install and has strong popularization applicability.

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

[0006] A proximity switch installation and detection device comprises a lifting baffle, a weight fixing protective device enclosed on the outer periphery of the lifting baffle, screw holes opened on the weight fixing protective device, a steel wire rope inserted into the screw holes, a counterweight connected to the tail end of the steel wire rope, a proximity switch protective plate and a proximity switch installation bracket arranged up and down on the same side of the weight fixing protective device, and a proximity switch installed on the proximity switch installation bracket, wherein the proximity switch protective plate is located at the top of the weight fixing protective device, and the proximity switch protection plate extends outward from the proximity switch installation bracket, the proximity switch cooperates with the counterweight, and the counterweight is located in the enclosed space of the weight fixing protective device, and the head end of the steel wire rope is connected to the bracket of the lifting baffle.

[0007] Furthermore, the counterweight comprises a nut and a weight which are fixedly connected together, and the nut is connected to the end of the steel wire rope.

[0008] Furthermore, the outer diameter of the weight is 48 mm with a 3 mm chamfer, and an M8 mm nut is welded at the center of the weight.

[0009] Furthermore, the proximity switch comprises a baffle rising position proximity switch and a baffle falling position proximity switch which are arranged up and down, and both the baffle rising position proximity switch and the baffle falling position proximity switch are matched with the counterweight.

[0010] Furthermore, it also includes a spare proximity switch, which is located on a proximity switch mounting bracket between the baffle rising position proximity switch and the baffle descending position proximity switch.

[0011] Furthermore, the steel wire rope is a stainless steel wire rope.

[0012] Furthermore, the proximity switch mounting bracket is welded to the periphery of the weight fixing protection device at a distance of 100 mm from both ends.

[0013] Furthermore, a smooth film is provided on the inner wall of the weight fixing protection device for the counterweight to slide freely.

[0014] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are:

[0015] In the utility model, the switch protection plate is a device for protecting the proximity switch to prevent the switch from being affected by cooling water. The steel wire rope is used to be connected with the nut, and the weight is suspended by the nut. The weight fixing protection device is used to fix the direction and displacement of the weight, so that the displacement of the weight can reflect the actual displacement of the lifting baffle, thereby improving the detection accuracy.

[0016] In actual use, the bolt and the weight are welded together, the other end of the wire rope is connected to the lifting baffle bracket, and the other end is hung with the bolt, and the weight and the bolt are welded; during the movement of the lifting baffle, the wire rope is driven by the lifting baffle bracket, and the wire rope drives the weight to move, so that the position change of the lifting baffle during the rising and falling movement process is converted into a position change on the proximity switch installation device. At this time, the proximity switch indirectly detects the rising and falling position of the lifting baffle by detecting the position of the weight; by adjusting the length of the wire rope, the proximity switch installation device can be installed at a location on site that is away from high temperature and water vapor, has a good environment, and is easy to repair and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the original proximity switch installation diagram.

[0018] Figure 2 It is a structural schematic diagram of the device.

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the device. Figure 1 .

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the device. Figure 2 .

[0021] Figure 5 It is a partial three-dimensional structural schematic diagram of the device.

[0022] Figure 6 It is a structural diagram of the weight.

[0023] Among them: lifting baffle 1, hot steel billet 2, baffle rising position proximity switch 3, baffle lowering position proximity switch 4, transport roller 5, wire rope 6, screw hole 7, weight fixing protection device 8, nut 9, weight 10, switch protection plate 11, proximity switch mounting bracket 12. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the embodiments.

[0025] The utility model is described clearly and completely below in conjunction with the accompanying drawings so that those skilled in the art can fully implement the utility model without having to make creative work.

[0026] The specific implementation of the utility model is:

[0027] like Figure 1As shown, the original proximity switch installation device includes a lifting baffle 1, a hot steel billet 2, a baffle rising position proximity switch 3, a baffle falling position proximity switch 4, and a transport roller 5. Hot steel billets 2 are provided on both sets of transport rollers 5, and a lifting baffle 1 is provided between the two sets of transport rollers 5. The baffle rising position proximity switch 3 and the baffle falling position proximity switch 4 are provided on the upper and lower outer sides of the bottom of the lifting baffle 1. The baffle rising position proximity switch 3 and the baffle falling position proximity switch 4 are both matched with the counterweight, and the baffle rising position proximity switch 3 is on the top, and the baffle falling position proximity switch 4 is on the bottom. If necessary, a spare proximity switch is also included, which is located on the proximity switch installation bracket 12 between (for example, in the middle of) the baffle rising position proximity switch 3 and the baffle falling position proximity switch 4, as shown in FIG. Figure 2 shown.

[0028] The original proximity switch installation position is 30 cm away from the hot billet 2. The baffle rising position proximity switch 3 and the baffle falling position proximity switch 4 detect the actual position by detecting the rise and fall of the lifting baffle 1. There are many disadvantages that have been explained in the background, and it is no longer suitable for the actual site.

[0029] So engineers developed a proximity switch installation detection device, such as Figure 2-Figure 6 As shown, on the basis of the original, it also includes a steel wire rope 6, a screw hole 7, a weight fixing protection device 8, a nut 9, a weight 10, a proximity switch protection plate 11, and a proximity switch mounting bracket 12.

[0030] In terms of specific structure, it includes a lifting baffle 1, a weight fixing protective device 8 enclosed in the outer periphery of the lifting baffle 1, screw holes 7 opened on the weight fixing protective device 8, a wire rope 6 inserted into the screw holes 7, a counterweight connected to the tail end of the wire rope 6, a proximity switch protective plate 11 and a proximity switch mounting bracket 12 arranged on the same side of the weight fixing protective device 8, and a proximity switch mounted on the proximity switch mounting bracket 12. The proximity switch protective plate 11 is located at the top of the weight fixing protective device 8, and the proximity switch protective plate 11 extends outward from the proximity switch mounting bracket 12. The proximity switch cooperates with the counterweight, and the counterweight is located in the enclosed space of the weight fixing protective device 8. The head end of the wire rope 6 is connected to the bracket of the lifting baffle 1.

[0031] The innovation of this patent is to weld a nut with a diameter of 8mm on the weight 10, and use a stainless steel wire rope with a diameter of 2.5mm to hang on the nut.

[0032] The steel wire rope 6 is a stainless steel wire rope, which is connected to the nut 9 through the screw hole 7 on the weight fixing protective device. The nut 9 and the weight 10 are welded to form a counterweight, and the weight 10 is located inside the weight fixing protective device 8. The outer diameter of the weight 10 is 48mm, with a 3mm chamfer. The M8mm nut 9 is welded at the center of the weight 10. It is required that this "counterweight combined with the weight" can slide freely inside the weight fixing protective device 8. The proximity switch mounting bracket 12 is welded 100mm away from both ends of the weight fixing protective device 8 to install the proximity switch. The proximity switch protection plate 11 is welded to the top of the proximity switch mounting bracket 12 near the screw hole 7. The proximity switch protection plate 11 extends outward by several centimeters to protect the proximity switch. In order to make the sliding of the weight 10 smoother, a smooth film is provided on the inner wall of the weight fixing protective device 8 for the counterweight to slide freely to avoid sliding damage affecting the measurement accuracy.

[0033] During the production process, when each hot billet 2 or slab comes over, the lifting baffle 1 will rise and fall once. When the lifting baffle 1 moves, the wire rope 6 drives the weight 10, and the proximity switch detects the position of the weight 10. Figure 2 Multiple positions of the weight 10 are shown in the figure, so that the rising and falling positions of the lifting baffle 1 can be detected, which is very convenient.

[0034] After using this device, the proximity switches (proximity switch 3 for baffle rising position, proximity switch 4 for baffle falling position) were replaced once every two years instead of once a month. Previously, on-site inspection and cleaning were carried out every time the car was parked, but after the transformation, they are inspected once a week. The original design installation position was 3.2 meters from the ground, but it was transformed to 1.2 meters from the ground, away from high temperature and water vapor, which is more convenient for inspection and maintenance.

[0035] The above describes the preferred embodiments of the present invention. It should be pointed out that the present invention is not limited to the above-mentioned specific implementation methods, and the devices and structures not described in detail should be understood to be implemented in a common manner in the art; any simple modifications, equivalent changes and modifications made to the above embodiments by any technician familiar with the art based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A proximity switch installation detection device, characterized in that: The invention comprises a lifting baffle (1), a weight fixing protective device (8) enclosed on the outer periphery of the lifting baffle (1), a screw hole (7) provided on the weight fixing protective device (8), a steel wire rope (6) inserted into the screw hole (7), a counterweight connected to the tail end of the steel wire rope (6), a proximity switch protective plate (11) and a proximity switch mounting bracket (12) arranged on the same side of the weight fixing protective device (8) from top to bottom, and a proximity switch mounted on the proximity switch mounting bracket (12), wherein the proximity switch protective plate (11) is located at the top of the weight fixing protective device (8), and the proximity switch protective plate (11) extends outward from the proximity switch mounting bracket (12), the proximity switch cooperates with the counterweight, and the counterweight is located in the enclosed space of the weight fixing protective device (8), and the head end of the steel wire rope (6) is connected to the bracket of the lifting baffle (1).

2. A proximity switch installation detection device according to claim 1, characterized in that: The counterweight comprises a nut (9) and a weight (10) which are fixedly connected together, and the nut (9) is connected to the end of the steel wire rope (6).

3. A proximity switch installation detection device according to claim 2, characterized in that: The outer diameter of the weight (10) is 48 mm and has a 3 mm chamfer. An M8 mm nut (9) is welded at the center of the weight (10).

4. A proximity switch installation detection device according to claim 1, characterized in that: The proximity switch comprises a baffle rising position proximity switch (3) and a baffle falling position proximity switch (4) which are arranged in an upper and lower manner, and the baffle rising position proximity switch (3) and the baffle falling position proximity switch (4) are both matched with a counterweight.

5. A proximity switch installation detection device according to claim 4, characterized in that: It also includes a spare proximity switch, which is located on a proximity switch mounting bracket (12) between the baffle rising position proximity switch (3) and the baffle descending position proximity switch (4).

6. A proximity switch installation detection device according to claim 1, characterized in that: The steel wire rope (6) is a stainless steel wire rope.

7. A proximity switch installation detection device according to claim 1, characterized in that: The proximity switch mounting bracket (12) is welded to the periphery of the weight fixing protection device (8) at a distance of 100 mm from both ends.

8. A proximity switch installation detection device according to any one of claims 1 to 7, characterized in that: A smooth film is provided on the inner wall of the weight fixing protection device (8) for the weight to slide freely.

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