Flexible anti-sticking material self-cleaning stacker reclaimer wheel bucket

Abstract

This invention belongs to the technical field of stacker-reclaimers, and particularly relates to a flexible, anti-sticking, self-cleaning stacker-reclaimer bucket wheel. It includes a base plate with a bending angle, side plates welded to both sides of the base plate to form the bucket wheel, bucket lips welded to the side plates and base plate, bucket teeth bolted to the bucket lips, and two sets of cleaning devices installed on the base plate. Each cleaning device includes a wear-resistant protective cover and a flexible liner. The wear-resistant protective cover is welded to the base plate, and the flexible liner is bolted to the base plate. This invention achieves self-cleaning of the bucket wheel to prevent material adhesion, doubling the stacker-reclaimer's material handling efficiency without needing to increase the stacker-reclaimer's feed rate, avoiding overload of the bucket wheel mechanism, and eliminating bucket wheel torque limiter breakage. The bucket wheel mass is reduced to 25% of its original weight, restoring cantilever torque balance, eliminating faults such as wheel breakage and slewing bearing connecting bolt breakage, extending the service life of transmission components, and saving equipment maintenance costs. Compared to before, each stacker-reclaimer saves approximately 30% of electricity per day.

Description

Technical Field

[0001] This invention belongs to the field of stacker-reclaimer technology, and particularly relates to a flexible, non-stick, self-cleaning stacker-reclaimer wheel bucket. Background Technology

[0002] Stacker-reclaimers (also known as stackers and reclaimers) are high-efficiency continuous loading and unloading machines widely used in bulk material yards in steel plants, ports, power plants, and mines. They are mainly used for loading, unloading, and conveying bulk materials such as iron ore (sand), coal, and sand. The main component for reclaiming operations is the bucket wheel assembly, which consists of the bucket wheel body and multiple buckets evenly spaced along the circumference of the bucket wheel body. The buckets are generally semi-enclosed metal structures made by stamping or welding.

[0003] However, in the process of implementing the technical solutions in the embodiments of this application, the inventors of this application discovered the following technical problems in the prior art:

[0004] (1) Stacker reclaimer buckets are generally semi-enclosed buckets. Due to the characteristics of the material, stacker reclaimer buckets have serious material sticking when reclaiming iron concentrate with high moisture content.

[0005] (2) Material buildup on the inner wall of the bucket wheel will result in the effective material handling volume being only 10%-50% of the bucket wheel volume before material buildup. This will severely reduce the efficiency of the material handling operation.

[0006] (3) In order to maintain a relatively high material handling efficiency, the current production method is to increase the feed rate of the stacker-reclaimer. This measure has a limited effect on increasing the material handling speed and is prone to overloading the bucket wheel mechanism, which can further cause the torque limiting rod of the motor reducer to break, and the transmission mechanism such as the motor and reducer to overturn. This measure will also cause an abnormal increase of 3-8 tons in the load on the cantilever head of the stacker-reclaimer, which can easily cause the cantilever balance torque to become unbalanced, resulting in serious failures such as the breakage of the slewing bearing connecting bolts, overturning, and derailment, thus increasing the maintenance cost of the entire stacker-reclaimer.

[0007] (4) Currently, manual cleaning of the adhesive material is mainly carried out during maintenance time. However, due to the high strength and hardness of the hardened material, manual cleaning is extremely difficult and poses significant safety risks. Using tools such as excavators and hydraulic hammers for cleaning significantly increases cleaning costs.

[0008] (5) The current stacker reclaimer uses chain shaking to prevent material sticking, but it will cause material spillage and ultimately the efficiency of material reclaiming will be limited.

[0009] This problem seriously hinders the safe and stable production of raw materials and processes, and urgently needs to be addressed and resolved at its root. Summary of the Invention

[0010] The purpose of this invention is to provide a flexible, non-stick, self-cleaning stacker-reclaimer wheel bucket to solve the problems existing in the prior art.

[0011] The technical solution adopted by the present invention to solve its technical problem is: a flexible anti-sticking self-cleaning stacker-reclaimer wheel bucket, including a bottom plate with a bending angle, side plates welded to both sides of the bottom plate to form a wheel bucket, bucket lips welded to the side plates and the bottom plate, bucket teeth bolted to the bucket lips, and two sets of cleaning devices installed on the bottom plate. The cleaning devices include a wear-resistant protective cover and a flexible liner. The wear-resistant protective cover is welded to the bottom plate, and the flexible liner is bolted to the bottom plate.

[0012] Furthermore, both the bucket teeth and the bucket lip are made of Hardox400 wear-resistant steel plate. The bucket teeth are provided with threaded holes, and the bucket teeth are bolted to the bucket lip through bolt pairs and threaded holes.

[0013] Furthermore, the bottom plate is divided into a front and a rear section by the bend. The front section of the bottom plate is close to the feed end of the wheel bucket. Both the front and rear sections of the bottom plate are frame structures with a square cavity in the middle. At least one elastic grate bar is welded horizontally inside the cavity of both the front and rear sections of the bottom plate.

[0014] Furthermore, two cleaning devices are installed on the front and rear of the base plate, respectively. The wear-resistant protective cover has an L-shaped cross-section and has long and short arms. One side of the long arm of the two wear-resistant protective covers is welded to the feed end of the front and rear of the base plate and tilts towards the inside of the wheel bucket. The short arm of the wear-resistant protective cover faces towards the inside of the wheel bucket, thereby forming a protective space between the wear-resistant protective cover and the base plate.

[0015] Furthermore, the bolted end of the flexible liner is located on the base plate below the wear-resistant protective cover. When bolting the flexible liner, a bolt pair is used to penetrate the flexible liner and the base plate, and then a nut is threaded onto the end of the bolt pair to lock it in place by means of double nut bolting.

[0016] Furthermore, the flexible liner is bolted to the base plate in the opposite direction. One end of the flexible liner is flipped 180 degrees and bolted to the base plate. The other end of the flexible liner is laid on the top surface of the corresponding front and rear parts of the base plate. The two flexible liners cover the front and rear parts of the base plate respectively. The bent end of the flexible liner is located in the protective space between the wear-resistant protective cover and the base plate.

[0017] Furthermore, the flexible liner is bolted to the base plate in the positive direction. After being bolted, the flexible liner is laid flat on the corresponding front and rear top surfaces of the base plate, with the two flexible liners covering the front and rear of the base plate respectively.

[0018] Furthermore, the flexible liner is a single layer or multiple layers stacked and then bolted to the base plate.

[0019] Furthermore, a counterweight is bolted to the free end of the flexible liner. The width of the counterweight corresponds to the width of the flexible liner. The cross-section of the counterweight is U-shaped. The free end of the flexible liner is inserted into the U-shape of the counterweight. The counterweight is provided with an internal threaded hole and a T-shaped hole. The counterweight is bolted through the T-shaped hole and the flexible liner and then threaded into the internal threaded hole.

[0020] The present invention has the following beneficial effects:

[0021] 1. This invention achieves self-cleaning of material adhering to the bucket wheel, doubling the material handling efficiency of the stacker-reclaimer without requiring an increase in the stacker-reclaimer's feed rate. It also avoids overloading the bucket wheel mechanism and eliminates the risk of bucket wheel torque limiter breakage. The bucket wheel mass is reduced to 25% of its original weight, restoring cantilever torque balance. Faults such as wheel breakage and slewing bearing connecting bolt breakage are eliminated, extending the service life of transmission components and saving equipment maintenance costs. Compared to before, each stacker-reclaimer saves approximately 30% of daily energy.

[0022] 2. The flexible liner can shake off the adhesive material during operation and scrape off the adhesive material on the inner wall of the side plate, thereby achieving self-cleaning during operation.

[0023] 3. The wear-resistant protective cover can prevent materials from directly impacting the bends of the flexible liner, thereby extending the service life of the flexible liner.

[0024] 4. The bucket teeth are detachably bolted to the bucket lip, allowing for easy removal and replacement when damaged, facilitating maintenance.

[0025] 5. The gap between the grate bars and the bottom plate forms a grate hole, which can serve as a discharge port to allow the material stuck between the flexible liner and the bottom plate to fall down, thereby effectively preventing material from sticking between the flexible liner and the bottom plate.

[0026] 6. The present invention can adjust the number of layers, thickness, and counterweight of the flexible liner according to the viscosity, moisture content, and season of the material being used, thereby adapting to different environmental requirements.

[0027] 7. This invention achieves self-cleaning of adhesive materials, thereby avoiding the need for manual cleaning and the use of tools during maintenance, and greatly reducing cleaning and maintenance costs.

[0028] 8. The counterweight can increase the swing force of the flexible liner, allowing the adhesive material to detach better. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure in Embodiment 1 of the present invention.

[0030] Figure 2 This is a schematic diagram of the structure in Embodiment 2 of the present invention.

[0031] Figure 3 This is a top view of the structure of the present invention.

[0032] Figure 4 This is a schematic diagram of the structure of the present invention viewed from below.

[0033] Figure 5 This is a schematic diagram of the connection structure between the counterweight and the flexible liner of the present invention.

[0034] Figure 6 This is a schematic diagram of the structure of the present invention installed on the bucket wheel.

[0035] The components are: 1. Bucket wheel; 2. Bottom plate; 3. Side plate; 4. Bucket lip; 5. Bucket teeth; 6. Cleaning device; 7. Wear-resistant protective cover; 8. Flexible liner; 9. Grate bar; 10. Counterweight; 11. Internal threaded hole; 12. T-hole; 13. Bolt pair; 14. Bolt; 15. Nut; 16. Threaded hole; 17. Bucket wheel. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0037] Example 1:

[0038] like Figure 1 and Figure 3-5 As shown, a flexible anti-sticking self-cleaning stacker-reclaimer bucket 1 includes a base plate 2 with a bending angle, side plates 3 welded to both sides of the base plate 2 to form the bucket 1, bucket lips 4 welded to the side plates 3 and the base plate 2, bucket teeth 5 bolted to the bucket lips 4, and two sets of cleaning devices 6 installed on the base plate 2. The cleaning devices 6 include wear-resistant protective covers 7 and flexible liners 8. The wear-resistant protective covers 7 are welded to the base plate 2, and the flexible liners 8 are bolted to the base plate 2.

[0039] Both the bucket teeth 5 and the bucket lip 4 are made of Hardox 400 wear-resistant steel plate. The bucket teeth 5 are provided with threaded holes 16. The bucket teeth 5 are bolted to the bucket lip 4 by bolts 14 and 13 through the threaded holes 16. The purpose of providing threaded holes 16 on the bucket teeth 5 is to allow the bucket teeth 5 to be detachably bolted to the bucket lip 4, so that they can be disassembled and replaced when damaged.

[0040] The base plate 2 is divided into a front and a rear section by the bend. The front section of the base plate 2 is close to the feed end of the bucket wheel 1. Both the front and rear sections of the base plate 2 are frame structures with a square cavity in the middle. At least one elastic grate bar 9 is welded laterally into the cavity of each section of the base plate 2. The grate bar 9 is used to support the flexible liner 8, prevent the flexible liner 8 from spilling material from the cavity of the base plate 2, and prevent the flexible liner 8 from being damaged by excessive bending. The gap between the grate bar 9 and the base plate 2 forms a grate hole, which can serve as a discharge port, effectively preventing material from sticking between the flexible liner 8 and the base plate 2.

[0041] Two cleaning devices 6 are respectively installed on the front and rear of the base plate 2. The wear-resistant protective cover 7 has an L-shaped cross-section and has long and short arms. One side of the long arm of the two wear-resistant protective covers 7 is welded to the feed end of the front and rear of the base plate 2 and tilts towards the inside of the wheel bucket 1. The short arm of the wear-resistant protective cover 7 faces towards the inside of the wheel bucket 1, thus forming a protective space between the wear-resistant protective cover 7 and the base plate 2. The wear-resistant protective cover 7 is used to prevent materials from directly impacting the bending part of the flexible liner 8, thereby improving the service life of the flexible liner 8.

[0042] The bolted end of the flexible liner 8 is located on the base plate 2 below the wear-resistant protective cover 7. When bolting the flexible liner 8, bolts 14 and 13 are used to pass through the flexible liner 8 and the base plate 2. A nut 15 is then threaded onto the tail of each bolt 14 and 13 for locking. The flexible liner 8 is made of a flexible material that can bend and recover its shape after bending. This allows the flexible liner 8 to rotate and shake with the circular motion of the bucket wheel 1, thus throwing off materials. Furthermore, the two sides of the flexible liner 8 can scrape off materials adhering to the inner wall of the side plate 3. In this embodiment, an old conveyor belt from the conveyor belt production line is used as the material for the flexible liner 8.

[0043] The flexible liner 8 is bolted to the base plate 2 in the opposite direction. One end of the flexible liner 8 is flipped 180 degrees and bolted to the base plate 2, while the other end of the flexible liner 8 is laid on the corresponding front and rear top surfaces of the base plate 2. The two flexible liners 8 cover the front and rear of the base plate 2 respectively, with the bent end of the flexible liner 8 located in the protective space between the wear-resistant protective cover 7 and the base plate 2. When the flexible liner 8 is bolted to the base plate 2 in the opposite direction, the material adhering to the flexible liner 8 is easier to shake off. This is suitable for materials with strong adhesion, or in humid environments where materials tend to adhere easily.

[0044] The flexible liner 8 is a single layer or multiple layers stacked and bolted to the base plate 2. The number of layers, thickness and other parameters of the flexible liner 8 are adjusted according to the viscosity, moisture content and season of the material being used, and it needs to be replaced in different seasons.

[0045] A counterweight 10 is bolted to the free end of the flexible liner 8. The width of the counterweight 10 corresponds to the width of the flexible liner 8, and the cross-section of the counterweight 10 is U-shaped. The free end of the flexible liner 8 is inserted into the U-shape of the counterweight 10. The counterweight 10 has an internal threaded hole 11 and a T-shaped hole 12. The counterweight 10 is threaded into the internal threaded hole 11 after passing through the T-shaped hole 12 and the flexible liner 8 with a bolt 14. The counterweight 10 is adjusted according to the viscosity, moisture content, and season of the material being used. If the material viscosity is high or the ambient moisture is high, a counterweight can be installed to increase the throwing force of the flexible liner 8, allowing the material to detach more easily. Conversely, the counterweight 10 can be removed.

[0046] Example 2:

[0047] like Figure 2 As shown, this embodiment provides a flexible anti-stick self-cleaning stacker-reclaimer wheel bucket 1, which has a structure basically the same as that of Embodiment 1. The difference is that the flexible liner 8 is bolted to the base plate 2 in the positive direction. After being bolted, the flexible liner 8 is laid flat on the upper surface of the corresponding front and rear parts of the base plate 2, with the two flexible liners 8 covering the front and rear parts of the base plate 2 respectively. The flexible liner 8 is bolted to the base plate 2 in the positive direction, which is suitable for materials with weak adhesion, or in dry environments where the material adhesion is low.

[0048] The working principle of this invention is:

[0049] like Figure 6 As shown, in use, the invention is installed on the bucket wheel 17 of the stacker-reclaimer. When the bucket wheel 17 rotates, the bucket 1 moves in a circular motion. After the material enters the bucket 1, the flexible liner 8, through the grate holes formed between the grate bars 9 and the bottom plate 2, acts as part of the bottom plate 2. The flexible liner 8 tends to expand outwards from the bucket 1 due to the pressure of the material, but the grate bars 9 provide strong support for the flexible liner 8, preventing the material from spilling out of the grate holes. When the bucket 1 rises to near the highest point of the bucket wheel 17, most of the material detaches from the bucket 1 and falls into the chute under its own weight. A small portion of the material may adhere to the flexible liner 8. At this time, the tail of the flexible liner 8 can freely fold and shake due to gravity as the bucket wheel 17 moves in a circular motion, throwing the material off. A small portion of the material is also thrown off through the grate holes, thus preventing the material from adhering between the flexible liner 8 and the bottom plate 2. When the bucket wheel 17 rotates to the bottom, the flexible liner 8 returns to the state of covering the bottom plate 2. This cycle repeats, which can achieve self-cleaning of the material stuck to the bucket wheel 1.

[0050] The embodiments described above are merely 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 inventive concept should fall within the protection scope of the present invention.

[0051] The technologies, shapes, and structures not described in detail in this invention are all known technologies.

Claims

1. A flexible, non-stick, self-cleaning stacker-reclaimer wheel bucket, comprising a base plate with a bending angle, wherein side plates are welded to both sides of the base plate to form a wheel bucket, characterized in that, The side plate and the bottom plate are welded with bucket lips, and bucket teeth are bolted to the bucket lips. Two sets of cleaning devices are installed on the bottom plate. The cleaning devices include wear-resistant protective covers and flexible liners. The wear-resistant protective covers are welded to the bottom plate, and the flexible liners are bolted to the bottom plate. The base plate is divided into a front part and a rear part by the bend. The front part of the base plate is close to the feed end of the wheel bucket. Both the front and rear parts of the base plate are frame structures with a square cavity in the middle. At least one elastic grate bar is welded horizontally in the cavity of both the front and rear parts of the base plate. The flexible liner is bolted to the base plate in the opposite direction. One end of the flexible liner is rotated 180 degrees and bolted to the base plate. The other end of the flexible liner is laid on the top surface of the corresponding front and rear parts of the base plate. The two flexible liners cover the front and rear parts of the base plate respectively. The bent end of the flexible liner is located in the protective space between the wear-resistant protective cover and the base plate. Alternatively, the flexible liner is bolted to the base plate in the forward direction. After being bolted, the flexible liner is laid flat on the top surface of the corresponding front and rear parts of the base plate. The two flexible liners cover the front and rear parts of the base plate respectively. A counterweight is bolted to the free end of the flexible liner.

2. The flexible anti-sticking material self-cleaning stacker-reclaimer bucket wheel according to claim 1, characterized in that, Both the bucket teeth and the bucket lip are made of Hardox400 wear-resistant steel plate. The bucket teeth are provided with threaded holes and are bolted to the bucket lip through bolt pairs and threaded holes.

3. The flexible anti-sticking material self-cleaning stacker-reclaimer bucket wheel according to claim 1, characterized in that, The two cleaning devices are respectively installed on the front and rear of the base plate. The cross-section of the wear-resistant protective cover is L-shaped. The wear-resistant protective cover has a long arm and a short arm. One side of the long arm of the two wear-resistant protective covers is welded to the feed end of the front and rear of the base plate and is inclined towards the inside of the wheel bucket. The short arm of the wear-resistant protective cover is facing towards the inside of the wheel bucket, thereby forming a protective space between the wear-resistant protective cover and the base plate.

4. The flexible anti-sticking material self-cleaning stacker-reclaimer bucket wheel according to claim 3, characterized in that, The flexible liner bolted end is located on the base plate below the wear-resistant protective cover. When bolting the flexible liner, a bolt pair is used to penetrate the flexible liner and the base plate, and then a nut is threaded onto the end of the bolt pair to lock it in place by means of double nut bolting.

5. The flexible anti-sticking material self-cleaning stacker-reclaimer bucket wheel according to claim 1, characterized in that, The flexible liner is a single layer or multiple layers stacked and then bolted to the base plate.

6. The flexible anti-sticking material self-cleaning stacker-reclaimer wheel bucket according to claim 4, characterized in that, The width of the counterweight corresponds to the width of the flexible liner. The cross-section of the counterweight is U-shaped. The free end of the flexible liner is inserted into the U-shape of the counterweight. The counterweight is provided with an internal threaded hole and a T-shaped hole. The counterweight is threaded into the internal threaded hole by bolts passing through the T-shaped hole and the flexible liner.

Images