A trolley type heating furnace trolley entry position detection device

Abstract

A trolley heating furnace trolley enters a position detection device, including fixed frame, detection rod, reset component, sensor support, deceleration sensor and stop sensor, both ends of the fixed frame are provided with fixed holes, the detection rod is slidably penetrated in the fixed frame through the two fixed holes, and the trolley will preferentially touch the nearest end of the detection rod in the process of approaching the fixed frame, the reset component is installed on the detection rod and is used for restoring the detection rod to the initial position, the sensor support is fixedly installed at one end of the fixed frame away from the heating furnace trolley, and the deceleration sensor and the stop sensor are sequentially fixedly installed on the sensor support. The detection rod and the trolley are in a separated state, the detection rod will not be deformed due to high hearth temperature, meanwhile, through the cooperation between the reset component and the detection sensor, the operation of the detection rod is more accurate, the detection accuracy is greatly improved, and the structural service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical design technology, specifically relating to a bogie-type heating furnace bogie position detection device. Background Technology

[0002] With the development of automation and information technology, the heating furnace group in the forging workshop has now achieved remote centralized control. Through the on-board tablet computer, the opening and closing of the furnace door and the entry and exit of the trolley for each heating furnace in the workshop can be realized. The higher the degree of automation, the higher the requirements for the stability of the heating furnace system.

[0003] Currently, the structure used for detecting the arrival position of the trolley in a bogie-type heating furnace involves a detection rod fixed to the trolley. As the trolley moves in and out, the detection rod moves with it. When the trolley reaches its designated position, a sensor fixed at the rear of the heating furnace detects the detection rod and sends a signal to the heating furnace control system PLC, thereby controlling the deceleration and stopping of the trolley. This structure has the following main drawbacks:

[0004] The detection rod is frequently moved in and out with the trolley, making it susceptible to being exposed to the high temperatures inside the furnace, which can cause the detection rod to deform. Furthermore, the detection rod lacks a guiding device, so when the trolley is in position, the detection sensor installed at the tail of the heating furnace will be unable to identify the position of the detection rod. This will prevent the interlocked furnace door from descending, thus preventing the heating furnace from heating normally after loading or unloading, resulting in abnormal production quality.

[0005] Other types of detection devices include combined cam switches, which, by meshing with the output shaft of the trolley drive reducer, can convert changes in trolley movement into rotational movements of the combined cam switch shaft. However, for heating furnaces with long trolley strokes, if detection is to be achieved, a reducer needs to be added between the trolley reducer and the combined cam switch. The angular velocity of the combined cam switch will become very slow, so the micro-movement of the cam switch will cause a large change in the trolley position, which will greatly affect the detection accuracy. Utility Model Content

[0006] The purpose of this invention is to provide a bogie-type heating furnace bogie position detection device. In this invention, the detection rod and the bogie are in a separate state, and the detection rod will not deform due to the high temperature of the furnace. At the same time, through the cooperation between the reset component and the detection sensor, the operation of the detection rod is more accurate, which greatly improves the detection accuracy and extends the structural life.

[0007] The present invention provides a device for detecting the position of a trolley-type heating furnace trolley, comprising a fixed frame, a detection rod, a reset assembly, a sensor bracket, a deceleration sensor, and a stop sensor. The fixed frame has fixing holes at both ends, through which the detection rod slides through the two fixing holes within the fixed frame. As the trolley approaches the fixed frame, it preferentially contacts the nearest end of the detection rod. The reset assembly is mounted on the detection rod to restore it to its initial position. The sensor bracket is fixedly mounted at one end of the fixed frame away from the heating furnace trolley, and the deceleration sensor and the stop sensor are sequentially fixedly mounted on the sensor bracket.

[0008] Furthermore, the detection rod is provided with a through hole.

[0009] Furthermore, the reset assembly includes a pin and a spring; the pin is inserted into a through hole; the spring passes through the detection rod, and one end of the spring is fixedly connected to the pin, while the other end contacts the inner surface of the fixed frame.

[0010] The beneficial effects of this utility model are as follows:

[0011] In this invention, the detection rod and the trolley are in a separate state, so the detection rod will not deform due to the high temperature of the furnace. At the same time, through the cooperation between the reset component and the detection sensor, the operation of the detection rod is more accurate, which greatly improves the detection accuracy and extends the structural life. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] In the diagram: 1. Fixed frame; 2. Detection rod; 3. Pin; 4. Spring; 5. Sensor bracket; 6. Deceleration sensor; 7. Stop sensor; 8. Trolley; 9. Fixing hole; 10. Through hole. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer and more understandable, the technical solutions of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] A device for detecting the position of a trolley-type heating furnace trolley, such as Figure 1 As shown, it includes a fixed frame 1, a detection rod 2, a reset assembly, a sensor bracket 5, a deceleration sensor 6, and a stop sensor 7.

[0016] The fixed frame 1 is a box-shaped structure welded from 20mm thick steel plates. It is hollowed out at the front and back, and fixed holes 9 with a diameter of 41mm are provided at both ends. The detection rod 2 slides through the fixed frame 1 through the two fixed holes 9. When the trolley 8 approaches the fixed frame 1, it will first touch the nearest end of the detection rod 2.

[0017] The detection rod 2 is made of a hollow steel tube with a diameter of 40mm, and a through hole 10 with a diameter of 10mm is provided in the middle part of it.

[0018] The reset assembly is installed on the detection rod 2 to restore the detection rod 2 to the initial detection position.

[0019] The reset assembly includes a pin 3 and a spring 4. The pin 3 is inserted into the through hole 10, and the spring 4 passes through the detection rod 2. One end of the spring 4 is fixedly connected to the pin 3, and the other end is in contact with the inner surface of the fixed frame 1. The pin 3 is made of a long M8 screw and is fixed with a nut to prevent the pin 3 from falling off.

[0020] The sensor bracket 5 is fixedly installed at one end of the fixed frame 1 away from the trolley 8. The sensor bracket 5 is made of angle steel. Multiple sensor mounting holes with a diameter of 10mm are equidistantly arranged on the sensor bracket 5. The sensor spacing can be adjusted as needed. The deceleration sensor 6 and the stop sensor 7 are fixedly installed in the sensor mounting holes in sequence.

[0021] The working principle of this utility model is as follows: When the trolley 8 moves backward and hits the detection rod 2, the detection rod 2 moves backward. When the detection rod 2 passes under the deceleration sensor 6 and the stop sensor 7 in succession, the deceleration sensor 6 and the stop sensor 7 will be triggered in succession and send a signal to the heating furnace control system PLC. The heating furnace control system PLC sends a signal to the travel transmission frequency converter of the trolley 8, which controls the trolley 8 to start decelerating and then stop.

[0022] During the above process, due to the action of the pin 3, the spring 4 is compressed. When the trolley 8 moves away, the spring 4 recovers its deformation and releases the thrust, pushing the detection rod 2 back to the initial position to complete the reset.

[0023] In this invention, the detection rod 2 and the trolley 8 are in a separate state, so the detection rod 2 will not deform due to the high temperature of the furnace. At the same time, through the cooperation between the reset component and the detection sensor, the operation of the detection rod 2 is more accurate, which greatly improves the detection accuracy and extends the structural life.

[0024] Any content not described in detail in this utility model specification belongs to the prior art.

Claims

1. A device for detecting the position of a trolley-type heating furnace trolley, characterized in that, The device includes a fixed frame, a detection rod, a reset assembly, a sensor bracket, a deceleration sensor, and a stop sensor. The fixed frame has fixing holes at both ends, through which the detection rod slides through the two fixing holes and is positioned within the fixed frame. As the trolley approaches the fixed frame, it preferentially contacts the nearest end of the detection rod. The reset assembly is mounted on the detection rod to restore it to its initial position. The sensor bracket is fixedly mounted at one end of the fixed frame away from the heating furnace trolley, and a deceleration sensor and a stop sensor are sequentially fixedly mounted on the sensor bracket.

2. The bogie-type heating furnace bogie position detection device according to claim 1, characterized in that, The detection rod is provided with a through hole.

3. The bogie-type heating furnace bogie position detection device according to claim 2, characterized in that, The reset assembly includes a pin and a spring; the pin is inserted into a through hole; the spring passes through the detection rod, and one end of the spring is fixedly connected to the pin, while the other end contacts the inner surface of the fixed frame.

Images