A folding curve chute focusing device and a distribution method

Abstract

This invention relates to the field of coke transfer technology, and in particular to a vehicle-mounted folding curved chute coke discharging device and material distribution method. The device includes a traveling trolley, a folding curved chute, a coke bin body, a traveling track, and a control system. The traveling trolley is located on top of a coke bin unit composed of multiple coke bin bodies. The traveling trolley moves along the traveling track and is aligned with the coke conveyor belt. This invention achieves coke loading from the lowest point of the bin bottom and gradually retracts as the material level rises, significantly reducing the breakage rate caused by high-level coke impacts. The chute end remains close to the material surface, ensuring uniform material distribution within the bin and preventing uneven accumulation. Anti-detachment limiting and slow-descent ratchet designs provide mechanical protection in case of abnormal expansion or contraction, effectively preventing the risk of the chute falling. The entire process is automatically completed by the control system, including travel positioning, chute lifting and lowering, and task switching, reducing manual operation and improving coke loading efficiency and operational safety.

Description

Technical Field

[0001] This invention relates to the field of coke transfer technology, specifically to a vehicle-mounted folding curved chute coke discharge device and a material distribution method. Background Technology

[0002] In the coking industry, the transfer and storage of coke are indispensable. The biggest problem to be aware of during the transfer and storage of coke is preventing it from falling from heights. Coke has good wear resistance, good compressive strength, but poor drop resistance. The rate of coke breakage directly affects the economic benefits of a coking plant. The gradual expansion of coking scale is accompanied by an increasing demand for coke storage. Coke storage sheds, coke square silos, and coke silos are all developing towards large storage capacity. Based on the physical characteristics of coke, various technical means have been developed. For example, coke is loaded from the top of each section of the coke silo, and the coke is loaded from the highest point at the top of the coke silo, sliding down the loading ramp and rolling to the bottom of the coke silo. Others use vertically placed rotary chutes in the coke silo, where the coke is loaded from the top of the rotary chute, sliding down the rotary chute and rolling to the bottom of the coke silo.

[0003] The two aforementioned technical solutions utilize the good abrasion resistance of coke to avoid the problem of poor impact resistance. However, both solutions share a common feature: the initial discharge point is fixed, making it impossible to create a low-point distribution within the coke bin and maintain an overall average material level. The breakage rate during coke transportation is crucial in the coking industry, directly determining the profitability of coking plants. Furthermore, the evenness of coke level within the coke bin determines the diversity and efficiency of transportation management in each bin. During coke transfer and storage, its poor impact resistance makes it prone to breakage from falls from heights, directly impacting economic benefits. Existing technologies using fixed loading points or rotary chutes have the following problems: ① Fixed charging point: This leads to uneven material levels in the coke silo, requiring the addition of charging points to improve uniformity, but this increases investment and occupies space; ② Limited loading height: Due to its own weight and initial material stacking limitations, the rotary chute cannot achieve low-point material distribution; ③ Uneven material level: Repeated impacts on coke exacerbate damage, and the coke loading position cannot be dynamically adjusted to balance the material level. Summary of the Invention

[0004] The purpose of this invention is to provide a vehicle-mounted folding curved chute coking device and a material feeding method, which achieves low-point material feeding, material level balance and reduced breakage rate through dynamic telescopic chute.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a vehicle-mounted folding curved chute coking device, comprising a traveling trolley, a folding curved chute, a coking bin body, a traveling track, and a control system. The traveling trolley is located on top of a coking bin unit composed of multiple coking bin bodies. The traveling trolley moves along the traveling track and is aligned with the same centerline as the coking conveyor belt. A conveyor belt discharge head cover is installed on the traveling trolley. The inlet end of the discharge head cover is sealed to the discharge end of the coking conveyor belt via a flange. The outlet end of the discharge head cover is aligned with the inlet of the uppermost chute of the folding curved chute. The folding curved chute is composed of multiple curved chute segments that are sequentially hinged end to end, and adjacent chute segments are connected by a drive motor. The output shaft of the drive motor is integrated with a slow-descent ratchet structure. Each segment of the folding curved chute has a double-layer protective sleeve structure at its nodes.

[0006] Preferably, the double-layer sheath structure consists of a first sheath, a second sheath, and a rotating shaft. The first sheath is fixed to the upper section of the chute, and the second sheath is fixed to the lower section of the chute. The rotating shaft allows the first sheath to rotate with the second sheath, and the drive motor is connected to the rotating shaft. The double-layer sheath structure also includes a hydraulic cylinder, a fixed plate, and a limiting rod. The fixed plate is fixed to the first sheath, the outer surface of the hydraulic cylinder is hinged to the fixed plate, the output shaft of the hydraulic cylinder is hinged to the rotating shaft, and the limiting rod is fixed to the rotating shaft. Both the first and second sheaths are arc-shaped.

[0007] Preferably, the outer surface of the first sheath is further bolted with a mounting plate, the surface of the mounting plate is bolted with a limit switch, the rotating shaft is also coaxially fixed with a trigger rod, and the limit switch is connected to an external control system.

[0008] Preferably, the inlet end of each segment of the folded curved chute is horn-shaped, and the outlet end is tapered.

[0009] Preferably, the exterior of the folded curved chute is also provided with an L-shaped anti-detachment limiting plate.

[0010] Preferably, the control system consists of a main controller, a distance detection device, and a material level detection device. The main controller is a PLC controller integrated inside the traveling trolley. The distance detection device is a laser rangefinder installed at the bottom of each chute section. The material level detection device is a radar level gauge installed at the top of each coke silo.

[0011] A method for discharging coke fabric using a vehicle-mounted folding curved chute, the method comprising the following steps: Step S1, Area Division and Initialization: Divide the top of the coke bin unit into N coke loading areas according to the number of coke bins. The main controller pre-stores the coordinate parameters and target material level threshold of each area. Step S2, Traveling and Positioning: The main controller controls the traveling trolley to move along the track to the loading port above the target coke bin body according to the coke loading requirements; Step S3, Chute Deployment and Height Adjustment: Start the primary drive motor, the slow-descent ratchet structure releases the primary chute, the laser rangefinder provides real-time feedback on the end height, when the distance from the bottom of the coke bin is greater than the length of two curved chute sections, the main controller pauses deployment, the double-layer sheath deploys to form a seal, the secondary drive motor starts, the chute continues to descend until the distance from the bottom is greater than the length of one curved chute section, the first and second sheaths move synchronously, and the above process is repeated to achieve low-point material distribution; Step S4, Coke Conveying and Dynamic Adjustment: The coke conveyor belt is started, and the coke enters the folded curved chute through the conveyor belt discharge head cover. The coke slides down the curve of the chute. When it passes through the double-layer sheath node, the sheath overlaps to allow the coke to pass. The main controller gradually controls the drive motor to shrink the chute according to the real-time data of the material level detection device, so that the end of the chute is always close to the coke accumulation surface. Step 5, Sluice Box Recovery and Task Switching: When the material level reaches the set threshold, the main controller sends a command, and the three-stage sluice boxes shrink sequentially. After the current coke bin is loaded, the traveling trolley automatically moves to the next coke bin and repeats the above process.

[0012] Preferably, in step S2, the drive end of the traveling trolley consists of a servo motor and a gear and rack mechanism, and the servo motor at this location is electrically connected to the main controller, with a positioning error ≤ 5mm.

[0013] Preferably, in step S3, the low point of the fabric is 1m from the end of the final chute to the bottom of the bin.

[0014] Preferably, in step S3, when the chute is dynamically shrinking, the main controller uses a PID algorithm and adjusts the shrinkage speed according to the material level change rate to keep the end of the chute close to the coke accumulation surface.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes the dynamic extension and retraction of a vehicle-mounted folding chute and its follow-up material distribution to achieve coke loading from the lowest point of the bin and gradual contraction as the material level rises. This significantly reduces the breakage rate caused by high-level impacts on the coke. The end of the chute remains close to the material surface, ensuring a uniform distribution of material within the bin and preventing uneven accumulation. The anti-detachment limit and slow-descent ratchet design provides mechanical protection in case of abnormal expansion or contraction, effectively preventing the risk of the chute falling. The entire process is automatically completed by the control system, including travel positioning, chute lifting and lowering, and task switching, reducing manual operation and improving coke loading efficiency and operational safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure in this invention; Figure 2This is a schematic diagram of the structure from another perspective in this invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a schematic diagram of the first-stage unfolded folded curved chute in this invention; Figure 5 This is a schematic diagram of the folded curved chute after its secondary unfolding in this invention; Figure 6 This is a schematic diagram of the three-stage unfolding of the folded curved chute in this invention; Figure 7 This is a schematic diagram of the three-stage unfolding of the folded curved chute in this invention; Figure 8 This is a schematic diagram of the three-stage contraction of the folded curve chute in this invention; Figure 9 This is a schematic diagram of the double-layer sheath structure in this invention; Figure 10 This is a partial schematic diagram of the double-layer sheath structure in this invention; Figure 11 This is a partial top view of the double-layer sheath structure in this invention; Figure 12 This is a partial bottom view of the double-layer sheath structure in this invention; Figure 13 This is a system principle block diagram of the present invention.

[0017] In the diagram: 1. Traveling trolley; 2. Coke conveyor belt; 3. Traveling track; 4. Folded curved chute; 5. Drive motor; 6. Slow-descent ratchet structure; 7. Distance detection device; 8. Anti-detachment limit plate; 9. Belt conveyor discharge head cover; 10. Material level detection device; 11. Coke bin body; 12. Main controller; 13. Double-layer sheath structure; 131. First sheath; 132. Second sheath; 133. Rotating shaft; 134. Hydraulic cylinder; 135. Fixing plate; 136. Limit rod; 137. Trigger rod; 138. Mounting plate; 139. Limit switch. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-13As shown, a vehicle-mounted folding curved chute coke discharge device mainly includes a traveling trolley 1, a folding curved chute 4, a coke bin body 11, a traveling track 3, and a control system. The traveling trolley 1 is located on top of a coke bin unit composed of multiple coke bin bodies 11 and moves along the traveling track 3. The traveling trolley 1 is aligned with the coke conveyor belt 2. A conveyor belt discharge head cover 9 is installed on the traveling trolley 1. Its feed end is sealed to the discharge end of the coke conveyor belt 2 through a flange, and its discharge end is aligned with the uppermost chute inlet of the folding curved chute 4. The drive end of the traveling trolley 1 is driven by a servo motor and meshes with the traveling track 3 through a gear and rack mechanism to achieve precise positioning. The folding curved chute 4 consists of multiple sections. The curved chutes are connected end to end in sequence, and adjacent chutes are connected by a drive motor 5. The inlet end of each chute is flared and the outlet end is tapered to ensure a smooth transition of coke. The slow-descent ratchet structure 6 is integrated into the drive motor 5 and adopts a combination design of bidirectional ratchet and damper. When the chutes are unfolded, the ratchet provides a step-by-step locking function; when they are retracted, the damper controls the chutes to descend slowly to prevent them from falling rapidly due to their own weight. Each chute section has a double-layer protective sleeve structure 13 at the node. The outer sleeve is fixed to the previous chute section, and the inner sleeve can rotate. The drive tilting motor controls the inner sleeve to unfold or overlap through a worm gear mechanism. When unfolded, it forms a sealed sidewall; when overlapped, it allows coke to pass through the node.

[0020] The double-layer sheath structure 13 consists of a first sheath 131, a second sheath 132, and a rotating shaft 133. The first sheath 131 is fixed to the upper section of the chute, and the second sheath 132 is fixed to the lower section of the chute. The rotating shaft 133 allows the first sheath 131 and the second sheath 132 to rotate. The drive motor 5 is connected to the rotating shaft 133. There is also another non-motor driving method. The double-layer sheath structure 13 also includes a hydraulic cylinder 134, a fixing plate 135, and a limit rod 136. The fixing plate 134... 5 is fixed to the first sheath 131. The outer surface of the hydraulic cylinder 134 is hinged to the fixed plate 135. The output shaft of the hydraulic cylinder 134 is hinged to the rotating shaft 133, providing a range for the hydraulic cylinder 134 to move up and down. The limit rod 136 is fixed to the rotating shaft 133. When the output of the hydraulic cylinder 134 is extended or shortened, it can drive the rotating shaft 133 to rotate, thereby driving the second sheath 132 to flip, realizing the unfolding of the next section of the chute. Both the first sheath 131 and the second sheath 132 are arc-shaped designs.

[0021] A mounting plate 138 is also bolted to the outer surface of the first sheath 131. A limit switch 139 is bolted to the surface of the mounting plate 138. A trigger rod 137 is also coaxially fixed to the rotating shaft 133. During the rotation of the rotating shaft 133, the trigger rod 137 and the limit switch 139 are driven, and then the drive motor 5 or the hydraulic cylinder 134 is closed. The hydraulic cylinder 134 can be an electric cylinder. The limit switch 139 is connected to an external control system.

[0022] The exterior of the folded curved chute 4 is also equipped with anti-detachment limiting plates 8. An L-shaped anti-detachment limiting plate 8 is welded to the outside of the steel rope of each section of the curved chute, and a 2mm gap is reserved between the limiting plate and the chute rail. When the chute breaks accidentally, the limiting plate gets into the groove of the rail to prevent the chute section from completely detaching. The control system consists of a main controller 12, a distance detection device 7, and a material level detection device 10. The main controller 12 is a PLC controller, integrated inside the traveling trolley 1, which receives and processes sensor signals in real time. The distance detection device 7 is a laser rangefinder installed at the bottom of each chute section, used to measure the real-time distance between the end of the chute and the bottom of the coke bin, with an accuracy of ±1mm. The material level detection device 10 is a radar level gauge installed at the top of each coke bin, which monitors the coke accumulation height in the bin in real time and transmits the signal to the main controller 12. The limiting rod 136 has a similar function to the anti-detachment limiting plate 8, used to support the second sheath 132.

[0023] The following uses a three-stage folded curve chute as an example, combined with... Figures 4-8 The specific operating procedure is as follows: Step S1, Area Division and Initialization: Divide the top of the coke bin unit into N coke loading areas according to the number of coke bins. For example, each coke bin corresponds to one area. The main controller 12 pre-stores the coordinate parameters and target material level threshold of each area. For example, set the material level height to 90% of the coke bin height. Step S2, Traveling and Positioning: According to the coke loading requirements, the main controller 12 controls the traveling trolley 1 to move along the track 3 to the loading port above the target coke bin body 11. The positioning accuracy is achieved by the cooperation of the servo motor and the encoder, with an error ≤5mm. Step S3, chute deployment and height adjustment: first stage deployment Figure 4 The primary drive motor 5 is activated, and the slow-descent ratchet structure 6 releases the primary chute. The laser rangefinder provides real-time feedback on the end height. When the distance to the bottom of the coke bin exceeds the length of the two curved chute sections, the main controller 12 pauses deployment, the double-layer sheath unfolds to form a seal, and the secondary deployment begins. Figure 5 When the secondary drive motor 5 starts, the chute continues to descend until it is more than one section of curved chute length away from the bottom, at which point the first sheath 131 and the second sheath 132 move synchronously; the third stage unfolds as follows: Figures 6-7 As shown, repeat the above process until the end of the chute is 1m from the bottom of the bin, thus achieving low-point material distribution; Step S4, Coke Conveying and Dynamic Adjustment: The coke conveyor belt 2 is started, and the coke enters the folded curved chute 4 through the conveyor belt discharge head cover 9. The coke slides down the curve of the chute. When it passes through the double-layer sheath node, the sheath overlaps to allow the coke to pass through. When it unfolds, it prevents side leakage. The main controller 12 controls the drive motor 5 to retract the chute gradually according to the real-time data of the material level detection device 10, so as to keep the end of the chute close to the coke accumulation surface and avoid high-level fall. Step 5, Sluice Box Recovery and Task Switching: When the material level reaches the set threshold, the main controller 12 sends a command, and the three-stage sluice boxes sequentially retract as follows: Figure 8 As shown, the slow-descent ratchet structure 6 ensures that the shrinkage speed is ≤0.5m / s. After the current coke bin is loaded, the traveling trolley 1 automatically moves to the next coke bin and repeats the above process.

[0024] This invention also incorporates an anti-detachment limiting mechanism. The gap design between the anti-detachment limiting plate 8 and the rail prevents the chute section from completely detaching without affecting normal expansion and contraction. In an emergency, the system triggers a mechanical locking device, with the chute section bearing the weight jointly from the limiting plate and the rail. The slow-descent ratchet structure 6 uses hydraulic damping and ratchet linkage to ensure controllable chute expansion / contraction speed. If the motor fails, a manual crank can be used for emergency operation. Automated control logic: The main controller 12 incorporates a PID algorithm to dynamically adjust the chute contraction speed based on the material level change rate, achieving continuous matching of "material lifting and chute retraction."

[0025] This invention takes a coking plant coking unit with 10 coking bins, each with a capacity of 500 tons, as an example: After system initialization, the traveling trolley 1 is positioned at coking bin No. 1, and the three-stage chute extends to 2m from the bottom of the bin. Coke is conveyed at a speed of 100 tons / hour, and the material level detection shows that the material level rises by 20% per hour. Every 25 minutes, the main controller 12 controls the traveling trolley to move from one end of coking bin No. 1 to the other end, retracting a section of the curved chute. The entire process is carried out without manual intervention. After coking bin No. 1 is full, the chute automatically retracts, and the trolley moves to coking bin No. 2. The overall coke loading efficiency is increased by 30%, and the breakage rate is reduced to below 0.5%. Through the above specific implementation method, this invention achieves the technical effects of low-point coke distribution, balanced material level, and reduced breakage rate, while also possessing high safety and automation levels.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vehicle-mounted folding curved chute coking device, comprising a traveling trolley (1), a folding curved chute (4), a coking bin body (11), a traveling track (3), and a control system, characterized in that, The traveling trolley (1) is located on top of the coke bin unit composed of multiple coke bin bodies (11). The traveling trolley (1) moves along the traveling track (3) and is on the same center line as the coke conveyor belt (2). The traveling trolley (1) is equipped with a conveyor belt discharge head cover (9). The feeding end of the discharge head cover (9) is sealed to the unloading end of the coke conveyor belt (2) through a flange. The discharge end of the discharge head cover (9) is aligned with the uppermost chute inlet of the folded curved chute (4). The folded curved chute (4) is composed of multiple curved chute segments that are hinged end to end in sequence. Adjacent chute segments are connected by a drive motor (5). The output shaft of the drive motor (5) is integrated with a slow-descent ratchet structure (6). Each chute segment in the folded curved chute (4) has a double-layer protective sleeve structure (13) at its node.

2. The vehicle-mounted folding curved chute coke discharge device according to claim 1, characterized in that: The double-layer sheath structure (13) consists of a first sheath (131), a second sheath (132), and a rotating shaft (133). The first sheath (131) is fixed to the upper section of the chute, and the second sheath (132) is fixed to the lower section of the chute. The rotating shaft (133) allows the first sheath (131) and the second sheath (132) to rotate. The drive motor (5) is connected to the rotating shaft (133). The double-layer sheath structure (13) also includes a liquid... The hydraulic cylinder (134), the fixing plate (135), and the limiting rod (136) are provided. The fixing plate (135) is fixed to the first sleeve (131). The outer surface of the hydraulic cylinder (134) is hinged to the fixing plate (135). The output shaft of the hydraulic cylinder (134) is hinged to the rotating shaft (133). The limiting rod (136) is fixed on the rotating shaft (133). The first sleeve (131) and the second sleeve (132) are both arc-shaped.

3. The vehicle-mounted folding curved chute coke discharge device according to claim 2, characterized in that: The outer surface of the first sheath (131) is also bolted with a mounting plate (138), and a limit switch (139) is bolted to the surface of the mounting plate (138). The rotating shaft (133) is also coaxially fixed with a trigger rod (137), and the limit switch (139) is connected to an external control system.

4. The vehicle-mounted folding curved chute coke discharge device according to claim 1, characterized in that: The inlet end of each section of the folded curve chute (4) is horn-shaped, and the outlet end is tapered.

5. The vehicle-mounted folding curved chute coke discharge device according to claim 1, characterized in that: The exterior of the folded curved chute (4) is also provided with an L-shaped anti-detachment limiting plate (8).

6. The vehicle-mounted folding curved chute coke discharge device according to claim 1, characterized in that: The control system consists of a main controller (12), a distance detection device (7), and a material level detection device (10). The main controller (12) is a PLC controller integrated inside the traveling trolley (1). The distance detection device (7) is a laser rangefinder installed at the bottom of each chute. The material level detection device (10) is a radar level gauge installed at the top of each coke bin.

7. A method for discharging coke fabric using a vehicle-mounted folding curved chute, characterized in that, The method includes the following steps: Step S1, Area Division and Initialization: Divide the top of the coke bin unit into N coke loading areas according to the number of coke bins. The main controller (12) pre-stores the coordinate parameters and target material level threshold of each area. Step S2, Traveling and Positioning: The main controller (12) controls the traveling trolley (1) to move along the track (3) to the loading port above the target coke bin body (11) according to the coke loading requirements; Step S3, chute deployment and height adjustment: Start the first-stage drive motor (5), release the first-stage chute through the slow-descent ratchet structure (6), and the laser rangefinder provides real-time feedback on the end height. When the distance from the bottom of the coke bin is greater than the length of two curved chute sections, the main controller (12) pauses deployment, the double-layer sheath unfolds to form a seal, the second-stage drive motor (5) starts, and the chute continues to descend until the distance from the bottom is greater than the length of one curved chute section. The first sheath (131) and the second sheath (132) move synchronously, and the above process is repeated to achieve low-point material distribution. Step S4, Coke conveying and dynamic adjustment: The coke conveyor belt (2) is started, and the coke enters the folded curve chute (4) through the conveyor belt discharge head cover (9). The coke slides down the curve of the chute. When it passes through the double-layer sheath node, the sheath overlaps to allow the coke to pass. The main controller (12) controls the drive motor (5) to shrink the chute gradually according to the real-time data of the material level detection device (10) to keep the end of the chute close to the coke accumulation surface. Step 5, Sluice box recovery and task switching: When the material level reaches the set threshold, the main controller (12) sends an instruction, and the three-stage sluice box shrinks in sequence. After the current coke bin is loaded with coke, the traveling trolley (1) automatically moves to the next coke bin and repeats the above process.

8. The method for discharging coke fabric using a vehicle-mounted folding curved chute according to claim 7, characterized in that: In step S2, the driving end of the traveling trolley (1) is composed of a servo motor and a gear rack mechanism, and the servo motor at this location is electrically connected to the main controller (12), and the positioning error is ≤5mm.

9. A method for discharging coke fabric using a vehicle-mounted folding curved chute according to claim 7, characterized in that: In step S3, the lowest point of material placement is 1m from the end of the final chute to the bottom of the bin.

10. A method for releasing coke fabric via a vehicle-mounted folding curved chute according to claim 7, characterized in that: In step S3, when the chute is dynamically shrinking, the main controller (12) uses a PID algorithm and adjusts the shrinkage speed according to the material level change rate to keep the end of the chute close to the coke accumulation surface.

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