A precise positioning mechanism for coke oven trolleys
By employing servo motors, gears, toothed rails, and vision recognition mechanisms on the coke oven trolley, combined with laser limiters, the problem of inaccurate positioning of the coke oven trolley was solved, achieving high-precision positioning and safe production operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINNENG CHEM (QIHE) CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-07-17
AI Technical Summary
The existing coke oven trolley's traveling mechanism is driven by a three-phase asynchronous motor, which has low control precision, resulting in large alignment errors, affecting production rhythm and posing safety hazards.
By employing servo motors, gears, toothed rails, and vision recognition mechanisms, combined with laser limiters, precise positioning of the coke oven trolley is achieved, improving alignment accuracy and efficiency.
This improves the alignment accuracy and efficiency of the coke oven trolley, prevents production accidents caused by excessive alignment errors, and ensures production safety.
Smart Images
Figure CN224513432U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of coke oven trolleys, and in particular relates to a precise positioning mechanism for coke oven trolleys. Background Technology
[0002] The coke oven trolley is a core mobile device in coking production, primarily used for critical processes such as coal charging, coke pushing, coke quenching, and coke extinguishing in coke ovens. During operation, the coke oven trolley needs to be precisely positioned at the designated location. For example, the alignment error of the oven door needs to be controlled within ≤5mm. If the alignment error is too large, the mechanical baffle may jam the coke pushing rod, or a "not in position" signal may appear, preventing the hydraulic lock from starting the coke pushing operation. Currently, the coke oven trolley's traveling mechanism is driven by a three-phase asynchronous motor, resulting in low control precision. This necessitates repeated alignment adjustments, which not only leads to low alignment accuracy but also affects production rhythm and even poses safety hazards. Summary of the Invention
[0003] The purpose of this invention is to provide a precise positioning mechanism for coke oven trolleys to solve the problems existing in the prior art.
[0004] The technical solution adopted by this utility model to solve its technical problem is:
[0005] A coke oven trolley precision positioning mechanism includes a coke oven trolley body and several markers. The coke oven trolley body is rotatably connected to two tracks via a traveling mechanism. Both tracks have toothed rails on their inner sides. Servo motors are fixed on both sides of the bottom of the coke oven trolley body. Gears are fixed to the output ends of the servo motors and mesh with the toothed rails. A visual recognition mechanism and a laser limiter receiver are installed on the coke oven trolley body. The laser limiter transmitter and several markers are set at various positioning sites.
[0006] Furthermore, the servo motor is located at a diagonal position at the bottom of the coke oven trolley body.
[0007] Furthermore, the laser limiter has two receiving ends, which are located on both sides of the coke oven trolley body. There are also several transmitting ends of the laser limiter, which are installed at various positioning sites.
[0008] Furthermore, the markers are fixed at both ends of each positioning site.
[0009] Furthermore, the information collection terminals of the visual recognition mechanism are fixed at the four corners of the coke oven car.
[0010] This utility model has the following beneficial effects:
[0011] 1. This utility model uses a servo motor, gears, and toothed rails to perform the positioning work of the coke oven trolley, which improves the positioning accuracy and efficiency, facilitates the control of the production rhythm, and prevents production accidents caused by excessive positioning errors.
[0012] 2. The coke oven trolley drive mode is switched via a visual recognition mechanism, resulting in a fast response time.
[0013] 3. Use the original walking mechanism during normal walking, and use a servo motor drive during alignment to prevent the servo motor from being overloaded. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model.
[0015] Figure 2 This is a utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0016] Figure 3 This is a top view of the structure of this utility model.
[0017] The components include: 1. Coke oven trolley body; 2. Marking; 3. Traveling mechanism; 4. Track; 5. Gear rail; 6. Servo motor; 7. Gear; 8. Vision recognition mechanism; 9. Laser limiter. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with specific embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.
[0019] like Figure 1-3 As shown, a coke oven trolley precision positioning mechanism includes a coke oven trolley body 1 and several markers 2. The coke oven trolley body 1 is rotatably connected to two tracks 4 via a traveling mechanism 3. Both tracks 4 have toothed rails 5 on their inner sides. Servo motors 6 are fixed on both sides of the bottom of the coke oven trolley body 1. Gears 7 are fixed at the output end of the servo motors 6 and mesh with the toothed rails 5. A visual recognition mechanism 8 and a laser limiter 9 receiving end are installed on the coke oven trolley body 1. The laser limiter 9 transmitting end and several markers 2 are set at various positioning sites.
[0020] The servo motor 6 is located diagonally at the bottom of the coke oven trolley body 1. Compared to the three-phase asynchronous motors used in existing traveling mechanisms, the servo motor 6 offers higher control precision and sensitivity. Combined with gears 7 and gear rails 5, it enables more precise driving. It can be equipped with reducers, gearboxes, electromagnetic brakes, etc., as needed. It should be noted that servo motors 6 can be installed at all four corners of the bottom of the coke oven trolley body 1, but since the servo motors 6 are mainly used for positioning adjustment and the driving distance is relatively short, four are unnecessary; two diagonally positioned motors are sufficient. How the two servo motors 6 achieve synchronous operation is existing technology and will not be elaborated upon here.
[0021] The laser limiter 9 has two receiving ends, which are located on both sides of the coke oven car body 1. The laser limiter 9 has several transmitting ends, which are installed at various positioning sites (such as the positioning point of the coke oven).
[0022] Marker 2 is fixed at both ends of each positioning site. It should be noted that marker 2 can be fixed at each positioning site by affixing, painting, hanging, etc. For example, at a coke oven, marker 2 can be designed to read "Coke Oven #1", "Coke Oven #2", etc., with identical marker 2 fixed at both ends of the same coke oven. This way, the marker can be identified regardless of which end the coke oven trolley 1 enters from. The distance between marker 2 and the transmitting end of laser limiter 9 depends on the situation. Factors such as the speed at which the coke oven trolley 1 switches to servo motor 6 after recognizing the marker, and the recognition speed, need to be considered to minimize the distance driven by servo motor 6.
[0023] The information acquisition terminals of the visual recognition mechanism 8 are fixed at the four corners of the coke oven trolley body 1. This ensures that regardless of which end of the coke oven trolley body 1 enters the positioning site, the marker 2 can be identified promptly, allowing for a quick switch to the servo motor 6 drive. The visual recognition mechanism 8 is a conventional technical means; its information acquisition terminals are typically cameras (multiple cameras can be set), capable of recognizing relevant information. Its specific structure and recognition method will not be elaborated further.
[0024] The working principle of this utility model is as follows:
[0025] Taking coke oven #1 as an example, the positioning process is the same for other locations. When the coke oven trolley body 1 receives the signal for pushing coke from coke oven #1, and the coke oven trolley body 1 is driven normally by the traveling mechanism to the location marked 2 of coke oven #1, the information acquisition end of the vision recognition mechanism 8 recognizes the words on the mark 2 and confirms that it has arrived at coke oven #1. The driving mode is switched from the traveling mechanism to the servo motor 6. The servo motor 6 drives the gear 7 to rotate. Under the meshing action of the gear rail 5, the position of the coke oven trolley body 1 is adjusted until the signal sent by the transmitter of the laser limiter 9 is received by its receiver. The coke oven trolley body 1 then sends back the positioning signal, releases the coke pushing interlock (activates the traveling interlock to prevent accidental movement during door removal and coke pushing), and the door removal device is activated to complete the door removal action. The coke pusher motor on the main body 1 of the coke oven starts pushing coke. A limit switch is installed during coke pushing. After the limit switch activates, the coke pusher motor reverses and retracts the pusher rod. After the limit switch activates, the coke pusher motor brakes, and a signal is sent to the oven door device to close and lock the oven door, completing the coke pushing process. The interlock is then released, and the machine moves to the next coke discharge point. The same process is used for coal loading and coke receiving.
[0026] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention.
[0027] The technologies, shapes, and structures not described in detail in this utility model are all known technologies.
Claims
1. A coke oven horse precise positioning mechanism, characterized in that, The system includes a coke oven trolley body and several markings. The coke oven trolley body is rotatably connected to two tracks via a traveling mechanism. Both tracks have toothed rails on their inner sides. Servo motors are fixed on both sides of the bottom of the coke oven trolley body. Gears are fixed to the output ends of the servo motors and mesh with the toothed rails. A visual recognition mechanism and a laser limiter receiver are installed on the coke oven trolley body. The laser limiter transmitter and several markings are set at various positioning sites.
2. The precise positioning mechanism for coke oven battery as claimed in claim 1 wherein, The servo motor is located at a diagonal position at the bottom of the coke oven trolley body.
3. The precise positioning mechanism for coke oven battery as claimed in claim 1 wherein, The laser limiter has two receiving ends, which are located on both sides of the coke oven trolley body. The laser limiter also has several transmitting ends, which are installed at various positioning sites.
4. The precise positioning mechanism for coke oven battery as claimed in claim 1 wherein, The markers are fixed at both ends of each positioning site.
5. The precise positioning mechanism for coke oven battery as claimed in claim 1 wherein, The information collection terminals of the visual recognition mechanism are fixed at the four corners of the coke oven car.