Position detection mechanism for kiln car of drying tunnel kiln

Abstract

The utility model discloses a position detection mechanism for a kiln car of a drying tunnel kiln, which is characterized in that a position detection device is arranged on a ground bottom plate on one side outside a kiln head of the tunnel kiln, a base plate is fixedly arranged on the outer side of the bottom plate through bolts, a travel switch and a proximity switch are arranged on the base plate in parallel, and a sleeve is horizontally and fixedly arranged on the inner side of the bottom plate; a sliding rod is sleeved with the sleeve, one end of the sliding rod is provided with threads, a stroke plate is installed through a fixing nut, and an arc-shaped plate is fixedly installed at the other end of the sliding rod. The device is compact and reasonable in structural design, a plurality of position detection devices are arranged on the outer side of the drying tunnel kiln, and each position detection device performs dual detection control through a travel switch and a position switch and controls opening and closing of a kiln door and operation of a kiln car in an interlocking manner, so that the automatic control capability of the drying tunnel kiln is improved, loss caused by misoperation of personnel is avoided, and the working efficiency is improved. Labor intensity of workers is reduced, energy waste is reduced, and operation efficiency of the drying tunnel kiln is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection equipment, and in particular relates to a position detection mechanism for a kiln car of a drying tunnel kiln. Background Art

[0002] Refractory bricks are widely used in various furnaces. Refractory bricks are made through raw material processing, molding, drying and sintering. Drying is a more important link, which directly affects the quality of the finished refractory bricks. Drying tunnel kilns are usually longer closed production lines. Kiln cars are loaded with refractory bricks and enter the drying tunnel kiln in turn. After drying, they are transported out of the drying tunnel kiln, forming a closed loop of the production process.

[0003] Typically, kiln carts loaded with refractory bricks are transported into the drying tunnel kiln using a hydraulic system. During normal production, each kiln cart is pulled out of the kiln exit, while another is pushed in from the kiln entrance. To reduce heat loss within the kiln, the kiln head of the drying tunnel kiln has been redesigned from a single door to a double-door closed structure. This prevents workers from seeing the kiln cart's movement. Manual operation is not only labor-intensive and inefficient, but also suffers from inaccurate detection results. The lack of automated detection of the kiln cart's position within the tunnel kiln means the kiln cart and kiln door are not linked. As the kiln cart enters and exits the kiln door, the door cannot open and close accurately, causing large-scale flow of hot air within the kiln. This leads to temperature instability and heat loss, resulting in energy waste and increased production costs. Furthermore, the kiln cart is prone to positional shifting during transportation. If not adjusted promptly, this can impact subsequent production, reducing efficiency at best and causing refractory bricks to be discarded, increasing production costs. Summary of the Invention

[0004] To address the above-mentioned technical problems, the present utility model provides a position detection mechanism for a kiln car in a drying tunnel kiln. The mechanism features a compact and rational design. Multiple position detection devices are installed outside the drying tunnel kiln. Each position detection device is dually controlled by a travel switch and a position switch. This mechanism automatically detects the kiln car's position within the drying tunnel kiln and interlocks the opening and closing of the kiln doors and the operation of the kiln car. This mechanism improves the automatic control capability of the drying tunnel kiln, avoids losses caused by operator error when both kiln doors are closed, reduces worker labor intensity, minimizes energy waste, and improves the automation and efficiency of the drying tunnel kiln's operation.

[0005] The technical solution adopted by the utility model is: a position detection mechanism for a kiln car of a drying tunnel kiln, comprising a position detection device, the position detection device being mounted on the ground on one side outside the kiln head of the tunnel kiln, a bottom plate being fixedly arranged on the ground, the position detection device being mounted on the bottom plate, a pad being fixedly arranged on the outer side of the bottom plate by bolts, a travel switch and a proximity switch being mounted in parallel on the pad, a sleeve being fixedly mounted horizontally on the inner side of the bottom plate, a sliding rod being sleeved inside the sleeve, one end of the sliding rod being provided with a thread, the travel plate being mounted by a fixing nut, and an arc plate being fixedly mounted on the other end of the sliding rod.

[0006] The position detection device is arranged perpendicular to the side wall of the kiln body, the push rod end of the travel switch and the sensing end face of the proximity switch are both facing the side wall of the kiln body and are spaced appropriately from the travel plate.

[0007] The sleeve is located between the travel switch and the proximity switch, is perpendicular to the side wall of the kiln body, and extends from the outside of the side wall of the kiln body into the inside of the drying tunnel kiln body to the detection position.

[0008] The travel plate is a long strip-shaped plate structure. The travel plate and the sliding rod are perpendicular to each other. The width of the travel plate is adapted to the installation distance of the travel switch and the proximity switch. It is convenient to sense or touch the travel plate to accurately detect the position of the kiln car.

[0009] The fixing nut is adapted to the end thread of the sliding rod, and the length of the sliding rod is adapted to the distance between the position detection device and the position to be detected. The installation length of the sliding rod can be fine-tuned by the fixing nut so that the outer top end of the arc plate of the sliding rod is close to the detection position.

[0010] An elastic element is installed between the sliding rod and the sleeve. When the position of the kiln car is detected, the sliding rod drives the stroke plate to shift and then rebounds to restore to the initial position.

[0011] The position detection device is electrically connected to the controller through the travel switch wiring and the proximity switch wiring respectively, and interlockingly controls the opening and closing actions of the double kiln doors.

[0012] The position detection device is installed on the ground on the outside of the tunnel kiln head. The purpose of this arrangement is that the main detection components of the position detection device, the proximity switch and the travel switch, are both arranged outside the dry tunnel kiln. They are not affected by the temperature and environment inside the kiln, have a long service life, and are accurate and highly precise in positioning. The use of dual detection means improves the detection accuracy and precision of the kiln car position, thereby improving the equipment operation safety and automation level of the tunnel kiln.

[0013] A travel switch and a proximity switch are installed in parallel on the pad; the width of the travel plate is adapted to the detection distance of the travel switch and the proximity switch; the purpose of such arrangement is to use the travel switch and the proximity switch to simultaneously detect the position of the kiln car. When the kiln car moves to the detection position, the wheel passes over the arc plate at the top of the sliding rod, pushing the sliding rod to slide along the sleeve, and the sliding rod drives the travel plate at the other end to move. The travel plate directly contacts the push rod of the travel switch, thereby triggering the contact action of the travel switch. At the same time, the proximity switch also senses the movement distance of the travel plate, thereby actuating the proximity switch, performing dual detection control, improving the detection precision and accuracy, and improving the safety of the operation of the drying tunnel kiln.

[0014] The beneficial effects of the present invention are as follows: the structural design of the position detection mechanism is compact and reasonable. Position detection devices are set on the outside of the tunnel kiln. Each position detection device is dual-detected and controlled by a travel switch and a position switch. The positioning is accurate and high-precision. It can accurately detect the position of the kiln car in the drying tunnel kiln and interlock the opening and closing of the kiln door and the operation of the kiln car. Relying on accurate position detection, the travel error is reduced, the smooth operation of the kiln car is guaranteed, and thus the product quality and production safety of the refractory bricks are guaranteed. The automatic operation control capability of the drying tunnel kiln is improved, and a safety interlock is realized. It effectively prevents equipment operation accidents, improves safety, avoids losses caused by human operating errors, reduces labor intensity of workers, reduces energy waste, and improves the automatic operation control level and work efficiency of the drying tunnel kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of the position detection device of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall top view of the position detection device of the utility model after installation.

[0017] Markings in the figure: 1. Base plate; 2. Travel plate; 3. Proximity switch; 4. Pad; 5. Travel switch; 6. Travel switch push rod; 7. Fixing nut; 8. Sleeve; 9. Sliding rod; 10. Arc plate; 11. Proximity switch connecting wire; 12. Travel switch connecting wire; 13. Kiln car track; 14. Chain track; 15. Tunnel kiln. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1-2As shown, a position detection mechanism of a kiln car of a drying tunnel kiln includes a position detection device, which is installed on the ground on the outer side of the kiln head of the tunnel kiln 15. A base plate 1 is fixedly provided on the ground, and the position detection device is installed on the base plate 1. A pad 4 is fixedly provided on the outer side of the base plate 1 by bolts, and a travel switch 5 and a proximity switch 3 are installed in parallel on the pad 4. A sleeve 8 is fixedly installed horizontally on the inner side of the base plate 1, and a sliding rod 9 is installed in the sleeve 8. One end of the sliding rod 9 is provided with a thread, and the travel plate 2 is installed by a fixing nut 7. The other end of the sliding rod 9 is fixedly installed with an arc plate 10.

[0020] The position detection device is positioned perpendicular to the kiln sidewall. The end of the travel switch push rod 6 and the sensing end of the proximity switch 3 are both oriented toward the kiln sidewall and are appropriately spaced from the travel plate 2. The use of both the travel switch 5 and the proximity switch 3 to simultaneously detect the kiln car's position allows for dual detection and control, improving detection precision and accuracy, and enhancing the safety and automation of the drying tunnel kiln's operation.

[0021] The sleeve 8 is located between the travel switch 5 and the proximity switch 3. The sleeve 8 is perpendicular to the side wall of the kiln body. The sleeve 8 extends from the outside of the side wall of the kiln body into the interior of the drying tunnel kiln body to the detection position.

[0022] The travel plate 2 is a long strip-shaped structure. The travel plate 2 and the sliding rod 9 are perpendicular to each other. The width of the travel plate 2 is adapted to the installation distance between the travel switch 5 and the proximity switch 3. It is convenient to sense or touch the travel plate 2 to accurately detect the position of the kiln car.

[0023] The fixing nut 7 is adapted to the end thread of the sliding rod 9, and the length of the sliding rod 9 is adapted to the distance between the position detection device and the position to be detected. The installation length of the sliding rod 9 can be fine-tuned by the fixing nut 7 so that the outer top end of the arc plate 10 of the sliding rod 9 is close to the detection position.

[0024] An elastic element is installed between the sliding rod 9 and the sleeve 8. When the position of the kiln car is detected, the sliding rod 9 drives the travel plate 2 to shift and then rebounds to restore to the initial position.

[0025] The position detection device is electrically connected to the controller via a travel switch connection line 12 and a proximity switch connection line 11, respectively, to interlock and control the opening and closing actions of the double kiln doors.

[0026] During use, the travel switch 5 and the proximity switch 3 are used to simultaneously detect the position of the kiln car in the drying tunnel kiln. When the kiln car moves to the detection position, the kiln car wheel passes the curved plate 10 at the top of the sliding rod 9, pushing the sliding rod 9 to slide along the sleeve 8. The sliding rod 9 drives the travel plate 2 at the other end to move. The travel plate 2 directly contacts the end of the travel switch push rod 6, thereby triggering the contact action of the travel switch 5. At the same time, the proximity switch 3 also senses the movement distance of the travel plate 2 and activates the proximity switch 3. The position detection device is electrically connected to the controller through the travel switch connecting line 12 and the proximity switch connecting line 11 respectively, and the opening and closing actions of the double kiln doors are controlled by program interlocking. When the kiln car passes the detection position, the displaced sliding rod 9 drives the travel plate 2 to rebound to its initial position through the elastic element in the sleeve 8. By performing dual detection control, the detection precision and accuracy are improved, and the safety, automatic operation control level and work efficiency of the drying tunnel kiln are improved.

[0027] Adhere to the principle of pushing the kiln car first and then entering the kiln car, and prepare the kiln shuttle car in place first. The kiln doors are always closed. The kiln car position is detected and controlled by the position detection device composed of the proximity switch 3 and the travel switch 5. When the kiln car is leaving the drying tunnel kiln, the car can be discharged normally when the "car full indicator light" is on. Turn the "manual / automatic" knob to the automatic position, then press the "auto start" button, wait for the car to be pulled to the parking position, and the "pull machine in place" indicator light will light up. The first door will automatically open. The kiln pusher will pull the kiln car onto the shuttle car within 30 seconds. The first door will automatically fall into place, and the kiln exit is completed. Multiple position detection devices are installed on the outside of the drying tunnel kiln, corresponding to different predetermined kiln car detection positions and indications on the kiln car track 13 and the chain track 14. For example, the first detection position indicates the pull machine preparation position; the third detection position indicates the kiln is full. The opening and closing of the double kiln doors are then controlled by program interlocking.

[0028] In addition to the above embodiments, the present invention may also have other implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A position detection mechanism for a kiln car of a drying tunnel kiln, characterized by: It includes a position detection device, which is installed on the ground on the outer side of the tunnel kiln head. A base plate is fixed on the ground. The position detection device is installed on the base plate. A pad is fixed on the outer side of the base plate by bolts. A travel switch and a proximity switch are installed in parallel on the pad. A sleeve is fixedly installed horizontally on the inner side of the base plate. A sliding rod is installed in the sleeve. One end of the sliding rod is provided with a thread. The travel plate is installed by a fixing nut. An arc plate is fixedly installed on the other end of the sliding rod.

2. The position detection mechanism of a kiln car of a drying tunnel kiln according to claim 1, characterized in that: The position detection device is arranged perpendicular to the side wall of the kiln body, the push rod end of the travel switch and the sensing end face of the proximity switch are both facing the side wall of the kiln body and are spaced appropriately from the travel plate.

3. The position detection mechanism of a kiln car of a drying tunnel kiln according to claim 1, characterized in that: The sleeve is located between the travel switch and the proximity switch. The sleeve is perpendicular to the side wall of the kiln body. The sleeve extends from the outside of the side wall of the kiln body into the inside of the drying tunnel kiln body to the detection position.

4. The position detection mechanism of a kiln car of a drying tunnel kiln according to claim 1, characterized in that: The travel plate is a long strip-shaped structure. The travel plate and the sliding rod are perpendicular to each other. The width of the travel plate is adapted to the installation distance of the travel switch and the proximity switch. It is convenient to sense or touch the travel plate and accurately detect the position of the kiln car.

5. The position detection mechanism of a kiln car of a drying tunnel kiln according to claim 1, characterized in that: The fixing nut is adapted to the end thread of the sliding rod, and the length of the sliding rod is adapted to the distance between the position detection device and the position to be detected. The installation length of the sliding rod can be fine-tuned by the fixing nut so that the outer top end of the arc plate of the sliding rod is close to the detection position.

6. The position detection mechanism of a kiln car of a drying tunnel kiln according to claim 1, characterized in that: An elastic element is installed between the sliding rod and the sleeve. When the position of the kiln car is detected, the sliding rod drives the stroke plate to shift and then rebounds to its initial position.

7. The position detection mechanism for a kiln car of a drying tunnel kiln according to claim 1, characterized in that: The position detection device is electrically connected to the controller through the travel switch wiring and the proximity switch wiring, and the opening and closing actions of the double kiln doors are controlled in a chain manner.

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