Coal piling and taking device for fuel transportation of thermal power plant

Abstract

The invention relates to the technical field of transportation equipment, and particularly discloses a coal piling and taking device for fuel transportation of a thermal power plant, the coal piling and taking device comprises a frame body, a conveying assembly, a feeding assembly, a discharging mechanism and a crushing mechanism, the discharging mechanism comprises a discharging hopper and an auger assembly, and the auger assembly comprises a plurality of auger shafts rotationally arranged in the discharging hopper; the outer side of each auger shaft is provided with an auger blade, the side, facing the conveying direction of the auger assembly, of the auger shaft serves as the front side, the screw pitch of the front end of each auger blade is larger than that of the rear end of the corresponding auger blade, and the rotating speeds of every two adjacent auger shafts are different. Through conveying of the auger assembly, materials can be evenly scattered on the conveying belt, the conditions of local impact on the conveying belt and uneven load of the conveying belt are effectively reduced, the service life of the conveying belt is prolonged, through differential rotation and screw pitch change of the crushing mechanism and auger blades, the materials are crushed, resistance in the conveying process is reduced, and the conveying efficiency is improved. The conveying efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation equipment, and in particular to a coal piling and taking device used for transporting fuel in thermal power plants. Background Art

[0002] In the fuel transportation system of thermal power plants, coal serves as the primary energy source. Its efficient and stable transportation and storage are critical to ensuring the continuous operation of the power plant. Bucket-wheel stackers, as advanced bulk material handling equipment, play a vital role in this transportation and storage process thanks to their efficient stacking and retrieving capabilities and advanced automation. Bucket-wheel stackers are capable of both stacking and retrieving operations. They use their rotating bucket wheels to grab, convey, and stack materials. During stacking, the bucket-wheel stacker-reclaimer receives bulk material from a stockpile conveyor and transfers it to a designated stockpile. During retrieving, the bucket-wheel stacker-reclaimer digs material from the stockpile and transfers it to a stockpile conveyor for further distribution or use.

[0003] The patent document with authorization announcement number CN118529509B discloses an environmentally friendly bucket wheel reclaimer, including a walking structure, a rotating platform fixedly installed on the top of the walking structure, a suspension movably installed on one side of the top of the rotating platform, a suspension belt conveyor installed inside the suspension, a bucket wheel rotatably installed on one side inside the suspension, a guide cover fixedly installed on the top of the rotating platform at one end of the suspension belt conveyor, and a screening guide structure fixedly installed inside the guide cover, thereby achieving the purpose of adjusting the lifting, rotation and extension of the conveyor belt, thereby making the position of the drop point more accurate and improving production efficiency. When in use, the bucket wheel transfers the material and transfers it to the suspension belt conveyor, and the material is transported by the suspension belt conveyor. The transported material enters the guide cover, and the guide cover diverts the material according to different sizes to different conveyors to realize material classification processing.

[0004] When using the above-mentioned reclaimer to reclaim materials, the materials are usually dumped directly from the bucket wheel onto the suspended belt conveyor, which will cause a large local impact on the conveyor belt, resulting in increased wear and tear of the conveyor belt and a shortened service life. In addition, the materials dumped on the conveyor belt may be concentrated on one side of the conveyor belt, causing uneven load on the conveyor belt, affecting the conveying efficiency and stability. In addition, during the conveying process, materials, especially large pieces of materials, are prone to cause conveyor belt blockage, slippage or equipment wear. Summary of the Invention

[0005] The present invention provides a coal stacking and taking device for transporting fuel in thermal power plants, aiming to solve the problems existing in related technologies, such as materials causing large local impacts on conveyor belts, resulting in increased wear and shortened service life of the conveyor belts, uneven loads on the conveyor belts, affecting conveying efficiency and stability, and large pieces of materials easily causing conveyor belt blockage, slippage or equipment wear.

[0006] The present invention provides a coal stacking and extracting device for transporting fuel in a thermal power plant, comprising a frame, on which a conveying assembly and a loading assembly are provided. The conveying assembly comprises a conveyor belt for conveying materials, and further comprises a discharge mechanism and a crushing mechanism provided on the frame. The loading assembly can grab materials and convey them to the discharge mechanism. The unloading mechanism includes a unloading hopper and an auger assembly. The auger assembly includes multiple auger shafts rotatably arranged in the unloading hopper. The rotation axis of each auger shaft is arranged along the width direction of the conveyor belt, and the multiple auger shafts are arranged in sequence along the length direction of the conveyor belt. An auger blade is installed on the outside of each auger shaft, and the outer peripheral sides of two adjacent auger blades have a set gap. The side facing the conveying direction of the auger assembly is the front side, and the pitch of the front end of the auger blade is greater than the pitch of the rear end of the auger blade. The rotation speeds of two adjacent auger shafts are different, so the material is crushed through the relative movement of two adjacent auger blades. The crushing mechanism is located at the front end of the auger assembly and is used to crush materials that are larger than the pitch of the auger blades.

[0007] During use, the material is grabbed by the feeding mechanism and transferred to the lower hopper. After the material enters the lower hopper, it will first fall on the top of the auger assembly and then fall on the conveyor belt, which can effectively reduce the local impact of the material on the conveyor belt and extend the service life of the conveyor belt; through the rotation of the auger blades, the material falling on the top of the auger assembly will enter the conveying channel formed by the auger blades, and then be conveyed forward along the width direction of the conveyor belt, and gradually scatter to the width direction of the conveyor belt during the conveying process, so as to achieve uniform material discharge, effectively reduce the uneven load of the conveyor belt, and improve the stability of the conveying process; during the conveying process, the differential rotation and pitch change between the two adjacent auger blades can be used to apply shear force and extrusion to the material to achieve material crushing, and the large pieces of material with a size larger than the pitch of the auger blades can be impact-crushed by the crushing mechanism to ensure that the material particle size meets the requirements of subsequent conveying and processing, reduce the resistance during conveying, and improve the conveying efficiency.

[0008] Preferably, the crushing mechanism includes a pressure plate and a drive assembly. The pressure plate is installed in the lower hopper for sliding up and down, and a crushing station is formed between the lower end of the pressure plate and the front end of the auger assembly. The drive structure is used to drive the pressure plate to move up and down. The effect is that the material transported to the front end of the auger assembly can be pressed and crushed by the movement of the pressure plate, so that the material with a size larger than the pitch of the auger blade can be crushed into smaller particles, so that it can pass through the auger blade smoothly and fall on the conveyor belt, thereby reducing the resistance during transportation and improving the transportation efficiency.

[0009] Preferably, the driving assembly includes a driving rod and a contact block. A slide groove for the longitudinal sliding of the pressure plate is provided in the lower hopper, and an elastic member 1 is provided between the pressure plate and the lower hopper. The elastic force direction of the elastic member 1 is the same as the sliding direction of the pressure plate. The contact block is provided at the lower end of the pressure plate, and the driving rod is installed on one of the auger shafts along the radial direction of the auger shaft. When the auger shaft rotates, the driving rod can contact the contact block and push the contact block to move upward, causing the elastic member 1 to contract.

[0010] Preferably, the driving assembly also includes a limiting structure, which includes a support member, a block 1, a block 2 and an unlocking member. The support member is horizontally slidably arranged in the lower hopper, and an elastic member 2 is provided between the support member and the lower hopper. The elastic direction of the elastic member 2 is the same as the sliding direction of the support member. The block 1 is provided on the side of the support member facing the pressure plate, and the block 2 is provided on the side of the pressure plate facing the support member. The upper and lower ends of the block 1 are respectively provided with a contact surface 1 and an inclined surface 1. The contact surface 1 is horizontally arranged, and the inclined surface 1 is inclined from top to bottom toward the direction close to the support member. The upper end of the block 2 is provided with an inclined surface 2 adapted to the inclined surface 1, and the lower end of the block 2 is provided with a contact surface 2 adapted to the contact surface 1. The unlocking member is used to drive the support member to move in a direction away from the pressure plate.

[0011] Preferably, the unlocking member is a push rod, which is installed on another auger shaft along the radial direction of the auger shaft. When the auger shaft rotates, the push rod can contact the support member and push the support member to move in the direction away from the pressure plate. The effect is that the pressure plate can be pushed to move upward through the cooperation of the driving rod and the contact block, and the pressure plate can be kept in the upper position of the slide groove through the limiting structure. Then, the limiting structure on the pressure plate can be released through the cooperation of the push rod and the support member, so that the pressure plate can be quickly reset under the action of the stored force release of the elastic member, thereby increasing the downward impact force of the pressure plate and thereby improving the crushing effect on the material.

[0012] Preferably, a support structure is provided on the frame, and the support structure is provided in multiple groups and arranged at intervals along the length direction of the conveyor belt. Each group of support structures includes multiple support rollers, and the multiple support rollers are arranged in sequence along the width direction of the conveyor belt, and the support rollers on both sides are inclined to form a trough structure of the conveyor belt. The effect is that the material can be confined to the trough area of ​​the conveyor belt, so that the material remains stable during the transportation process. At the same time, the material carrying capacity of the conveyor belt is increased, and the transportation efficiency is improved.

[0013] Preferably, a tensioning roller is provided on the frame for adjusting the tension of the conveyor belt. The effect of this is that it can ensure that the conveyor belt always maintains appropriate tension during operation, avoids slipping or deviation due to relaxation, and extends the service life of the conveyor belt.

[0014] Preferably, the loading assembly includes a bucket wheel, which includes a bucket wheel body and a bucket. The bucket wheel body is rotatably arranged on the frame body, and the buckets are provided in plurality, and the plurality of buckets are evenly installed on the outer periphery of the bucket wheel body along the circumference of the bucket wheel body.

[0015] Preferably, the feeding assembly further comprises a guide plate, which is arranged to be tilted from top to bottom, with the upper end of the guide plate being connected to the discharge port provided on the bucket wheel, and the lower end extending into the lower hopper.

[0016] Preferably, the bucket wheel further comprises an arc material baffle plate, which is mounted on the inner side of the bucket wheel body and is used to prevent the material in the bucket from sliding prematurely in the non-discharging area.

[0017] The beneficial effects of the present invention are: 1. The present invention is provided with a discharge mechanism. By setting an auger assembly, the material first falls on the top of the auger blade instead of directly impacting the conveyor belt, thereby effectively reducing the local impact of the material on the conveyor belt and extending the service life of the conveyor belt. In addition, the auger assembly transports the material in the discharge hopper, which can gradually scatter the material in the width direction of the conveyor belt, achieving uniform distribution of the material, effectively reducing the uneven load of the conveyor belt, and improving the conveying efficiency and stability during the conveying process.

[0018] 2. The present invention can exert shear force and extrusion on the material entering the conveying channel through the pitch change and differential rotation of the auger blades, thereby achieving preliminary crushing of the material. At the same time, for materials whose size is larger than the pitch of the auger blades, when they move to the front end of the auger assembly, the pressure plate can be moved to impact and crush this part of the material, ensuring that the particle size of the material meets the requirements of subsequent transportation and processing, reducing the resistance during transportation, and improving transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a front view of the present invention.

[0021] Figure 3 It is a schematic diagram of the assembly structure of the auger assembly and the lower hopper of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the auger assembly and the lower hopper of the present invention cut along the longitudinal direction.

[0023] Figure 5 It is a schematic diagram of the crushing mechanism of the present invention in an initial state.

[0024] Figure 6 It is a schematic diagram of the crushing mechanism of the present invention when it is in a power storage state.

[0025] Figure 7 It is a structural schematic diagram of the support structure of the present invention.

[0026] Figure 8 It is a structural schematic diagram of the stopper 1 of the present invention.

[0027] Figure 9 It is a structural schematic diagram of the stopper 2 of the present invention.

[0028] Reference numerals: 1. Frame; 11. Conveyor belt; 111. Support roller; 112. Tensioning roller; 12. Bucket wheel; 121. Bucket wheel body; 122. Bucket; 123. Arc material baffle; 13. Material guide plate; 2. Lower hopper; 3. Auger shaft; 31. Auger blade; 32. Driving member; 4. Press plate; 41. Driving rod; 42. Contact block; 43. Elastic member 1; 44. Support member; 45. Stopper 1; 46. Stopper 2; 47. Elastic member 2; 48. Push rod. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] like Figures 1 to 9 As shown, a coal piling and taking device for transporting fuel in a thermal power plant according to the present invention comprises a moving structure, a conveying assembly, a loading assembly, a unloading mechanism and a crushing mechanism.

[0031] A frame 1 is installed at the front end of the mobile structure, and the conveying component, loading component and unloading mechanism are all installed on the frame 1. The conveying component includes a conveyor belt 11 for conveying materials, and the loading component includes a bucket wheel 12 for grabbing materials. The bucket wheel 12 is installed on one side of the conveyor belt 11, and the unloading mechanism is used to transfer the materials grabbed by the bucket wheel 12 to the conveyor belt 11. When in use, the frame 1 is moved to the material pile for material collection through the movement of the mobile structure. The specific material collection method is to grab the material in the material pile through the rotation of the bucket wheel 12, and transfer the material to the unloading mechanism, and then transfer the material to the conveyor belt 11 through the unloading mechanism, and finally transport the material through the conveyor belt 11. Among them, the crushing mechanism is arranged in the unloading mechanism, which can crush the material transferred to the unloading mechanism.

[0032] The unloading mechanism includes a unloading hopper 2 and an auger assembly. The unloading hopper 2 is installed in the unloading area of ​​the bucket wheel 12. The upper and lower ends of the unloading hopper 2 are respectively provided with a feed port and a discharge port. Among them, the feed port is trumpet-shaped. This design can effectively expand the receiving range of the material, ensure that the material sliding from the bucket wheel 12 can smoothly enter the unloading hopper 2, and reduce the risk of material spillage. The auger assembly includes a plurality of auger shafts 3 rotating in the unloading hopper 2, and the unloading hopper 2 is equipped with a driving member 32 for independently driving each auger shaft 3 to rotate. The driving member 32 can be a motor, and the rotation axis of each auger shaft 3 is along the conveying The conveyor belt 11 is arranged in the width direction, and multiple auger shafts 3 are arranged in sequence along the length direction of the conveyor belt 11. An auger blade 31 is installed on the outside of each auger shaft 3, and the outer peripheral sides of two adjacent auger blades 31 have a set gap, with the side facing the conveying direction of the auger assembly as the front side, the pitch of the front end of the auger blade 31 is greater than the pitch of the rear end of the auger blade 31, and the rotation speeds of the two adjacent auger shafts 3 are different, so that the material can be crushed through the relative movement of the two adjacent auger blades 31. The crushing mechanism is arranged at the front end of the auger assembly, and is used to crush materials whose size is larger than the pitch of the auger blade 31.

[0033] Specifically, if Figures 1 to 5 The material in the conveying channel is prevented from falling through the gap between the two adjacent auger blades 31. After the material in the bucket wheel 12 is poured into the lower hopper 2, as the auger shaft 3 rotates, this part of the material will enter the conveying channel, and then be transported forward through the spiral structure of the auger blades 31, and gradually scatter onto the conveyor belt 11 during the conveying process, so as to achieve uniform material discharge; in addition, during the material transportation process, due to the different rotation speeds of adjacent auger shafts 3, relative movement is generated between adjacent auger blades 31, and this relative movement combined with the change in blade pitch can exert shearing force and extrusion on the material, so as to achieve material crushing. Among them, since some materials with a size larger than the pitch of the auger blades 31 cannot enter the conveying channel and be crushed, this part of the material will be crushed by the crushing mechanism to ensure that the particle size of the material meets the requirements of subsequent transportation and processing. The crushed material will enter the conveying channel and The material falls onto the conveyor belt 11, and the conveyor belt 11 transports the material to the subsequent processing or storage area, completing the entire material transportation process; therefore, after the material is dumped from the bucket wheel 12, it will fall on the top of the auger assembly instead of directly impacting the conveyor belt 11, reducing the local impact of the material on the conveyor belt 11 and extending the service life of the conveyor belt 11. At the same time, the auger assembly can transport the material forward evenly through the rotation of its blades, and gradually scatter it onto the conveyor belt 11 below during the transportation process, so as to achieve uniform distribution of the material in the width direction of the conveyor belt 11, reduce the uneven load of the conveyor belt 11, and effectively improve the stability of the material during transportation. In addition, through the pitch change and differential rotation of the auger blades 31, the material can be preliminarily crushed during transportation, reducing the resistance during transportation and improving transportation efficiency.

[0034] In some embodiments, the crushing mechanism includes a pressure plate 4 and a drive assembly. The pressure plate 4 is installed in the lower hopper 2 for sliding up and down, and a crushing station is formed between the lower end of the pressure plate 4 and the front end of the auger assembly. The drive structure is used to drive the pressure plate 4 to move up and down.

[0035] Specifically, if Figures 2 to 6 As shown, after the material is grabbed by the bucket wheel 12, it will fall into the lower hopper 2 near the rear end of the auger assembly. At this time, most of the material will enter the conveying channel and gradually fall onto the conveyor belt 11 during the conveying process. The material whose size is larger than the pitch of the auger blade 31 cannot enter the conveying channel and will continue to be intercepted above the auger assembly. During the rotation of the auger blade 31, it will be gradually pushed to the front end of the auger assembly. At the front end of the auger assembly, this part of the material will enter the crushing station formed between the pressure plate 4 and the auger assembly. At this time, the driving assembly drives the pressure plate 4 to move downward, exerting pressure on the material, squeezing this part of the material at the front end of the auger blade 31 for impact, achieving preliminary crushing, and crushing the material into smaller particles. The crushed material passes through the conveying channel and falls onto the conveyor belt 11 for transportation, completing the entire crushing and conveying process.

[0036] In some embodiments, the driving assembly includes a driving rod 41 and a contact block 42. A slide groove is provided in the lower hopper 2 for the pressure plate 4 to slide longitudinally, and an elastic member 43 is provided between the pressure plate 4 and the lower hopper 2 for driving the pressure plate 4 to reset. The elastic force direction of the elastic member 43 is the same as the sliding direction of the pressure plate 4. The elastic member 43 can be a spring. The contact block 42 is provided at the lower end of the pressure plate 4. The driving rod 41 is installed on one of the auger shafts 3 along the radial direction of the auger shaft 3. When the auger shaft 3 rotates, the driving rod 41 can contact the contact block 42 and push the contact block 42 to move upward, causing the elastic member 43 to contract.

[0037] Specifically, if Figures 2 to 6 When the auger shaft 3 is rotated, the driving rod 41 can be rotated accordingly. When the driving rod 41 rotates to the position where it contacts the contact block 42, it pushes the contact block 42 to move upward, and at the same time pushes the pressing plate 4 to move upward along the slide groove and overcome the elastic force of the elastic member 43. When the driving rod 41 continues to rotate and disengages from the contact block 42, the pressing plate 4 is reset under the elastic force of the elastic member 43 and returns to its initial position. In this process, the pressing plate 4 can apply downward pressure on the material in the crushing station, squeeze the material against the front end of the auger blade 31, and achieve preliminary crushing. Therefore, during the rotation of the auger shaft 3, the intermittent contact between the driving rod 41 and the contact block 42 can make the pressing plate 4 periodically apply pressure to the material, thereby achieving crushing of large pieces of material, avoiding the accumulation of material at the front end of the auger assembly, and improving the conveying efficiency and conveying stability.

[0038] In some embodiments, the driving assembly further includes a limiting structure, which includes a support member 44, a stopper 1 45, a stopper 2 46 and an unlocking member. The support member 44 slides horizontally in the lower hopper 2, and an elastic member 2 47 is provided between the support member 44 and the lower hopper 2. The elastic force direction of the elastic member 2 47 is the same as the sliding direction of the support member 44. The elastic member 2 47 can be a spring. The stopper 1 45 is provided on the side of the support member 44 away from the elastic member 2 47. A slider is provided at the end of the pressure plate 4, and the pressure plate 4 slides longitudinally with the slide groove provided in the lower hopper 2 through the slider. The stopper 2 46 is provided. On the side of the slider facing block 1 45, contact surface 1 and inclined surface 1 are respectively provided at the upper and lower ends of block 1 45. Contact surface 1 is horizontally arranged, and inclined surface 1 is inclined from top to bottom toward the direction close to support member 44. The upper end of block 2 46 is provided with inclined surface 2 adapted to inclined surface 1, and the lower end of block 2 46 is provided with contact surface 2 adapted to contact surface 1. The unlocking member is a push rod 48, and the push rod 48 is installed on the other auger shaft 3 along the radial direction of the auger shaft 3. When the auger shaft 3 rotates, the push rod 48 can contact with the support member 44 and push the support member 44 to move away from the pressure plate 4.

[0039] Specifically, if Figures 2 to 9 As shown, in the initial state, the elastic member 1 43 provides a downward elastic force to keep the pressure plate 4 in the lower position of the chute, and the elastic member 2 47 provides a horizontal elastic force to keep the support member 44 in a position close to the pressure plate 4. When the auger shaft 3 rotates, the drive rod 41 rotates accordingly. When the drive rod 41 contacts the contact block 42, it can push the contact block 42 to move upward, and at the same time drive the pressure plate 4 to move upward along the chute, so that the elastic member 1 43 is compressed to store force. During the rising process of the pressure plate 4, the inclined surface 2 of the stop block 2 46 can contact the stop block 1 45 The second stopper 46 is in contact with the first contact surface of the stopper 45, and the second stopper 47 is pressed against the first contact surface of the stopper 45, and the second stopper 46 is pressed against the first contact surface of the stopper 45, thereby limiting the position of the second stopper 46, that is, limiting the position of the press plate 4, so that the press plate 4 remains in the upper position of the chute. The following description is given by taking an example in which four auger shafts 3 are installed in the hopper 2, and the four auger shafts 3 are defined along the length direction of the conveyor belt 11 as axis one, axis two, axis three and axis four, wherein the rotation speeds of axis one and axis three are consistent, and the rotation speeds of axis two and axis four are consistent, so that the rotation speeds of two adjacent auger shafts 3 are different. In addition, it is defined that drive rods 41 are respectively installed on axis one and axis three, and push rods 48 are respectively installed on axis two and axis four. During the rotation of axis one and axis three, the driving rod 41 can cooperate with the contact block 42 to push the pressure plate 4 to move upward, and the limiting structure can keep the pressure plate 4 in the upper position of the slide groove. During the rotation of axis two and axis four, the push rod 48 rotates accordingly. When the push rod 48 When it contacts the support member 44, it can push the support member 44 to move in the direction away from the pressure plate 4, and drive the stopper 45 to move synchronously. As the stopper 45 moves, the stopper 46 will lose the obstruction of the stopper 45, that is, the limit on the pressure plate 4 is released. At this time, under the action of the force released by the elastic member 43, the pressure plate 4 will be driven to move downward quickly to reset, and the material located at the crushing station will be impacted and crushed. As the pressure plate 4 is reset, the support member 44 and the stopper 45 will be reset to the initial position under the action of the elastic member 47, and the next limiting operation will be performed. Therefore, by setting the limiting structure, the pressure plate 4 can be charged, the downward pressing speed of the pressure plate 4 can be increased, and the crushing effect of the material can be improved.

[0040] In some embodiments, a support structure is provided on the frame 1, and the support structure is provided in multiple groups and arranged at intervals along the length direction of the conveyor belt 11. Each group of support structures includes multiple support rollers 111, and the multiple support rollers 111 are arranged in sequence along the width direction of the conveyor belt 11, and the support rollers 111 on both sides are inclined to form a trough-shaped structure of the conveyor belt 11.

[0041] Specifically, if Figure 1 and Figure 7 As shown, the two side edges of the conveyor belt 11 are raised by the support structure, and ribs can be formed on both sides of the conveyor belt 11, which restricts the material to the trough area of ​​the conveyor belt 11, reduces the problem of material spillage caused by vibration, impact or deviation of the conveyor belt 11, and keeps the material stable during the conveying process. At the same time, the design of the trough structure can increase the material carrying capacity of the conveyor belt 11 and improve the conveying efficiency.

[0042] In some embodiments, the frame 1 is provided with a tensioning roller 112 for adjusting the tension of the conveyor belt 11. Figure 2As shown, by adjusting the tensioning roller 112, it is possible to ensure that the conveyor belt 11 always maintains appropriate tension during operation, avoid slipping or deviation due to relaxation, improve conveying efficiency, reduce equipment wear and extend the service life of the conveyor belt 11, wherein the tensioning roller 112 is installed on the non-load-bearing side of the conveyor belt 11, located below the conveyor belt 11, and the tensioning roller 112 is fixed to the frame 1 through a bracket. The bracket usually adopts an adjustable design so that the position of the tensioning roller 112 can be adjusted as needed.

[0043] In some embodiments, the bucket wheel 12 includes a bucket wheel body 121 and a bucket 122. The bucket wheel body 121 is rotatably mounted on the frame 1 and is typically a circular wheel disc. The bucket 122 is provided in multiple numbers and is evenly distributed along the circumference of the bucket wheel body 121 on the outer periphery of the bucket wheel body 121 for grabbing and loading materials. The loading assembly also includes a guide plate 13, which is tilted from top to bottom. The upper end of the guide plate 13 is connected to the discharge port provided on the bucket wheel 12, and the lower end extends into the lower hopper 2. The bucket wheel 12 also includes an arc baffle plate 123, which is installed on the inner side of the bucket wheel body 121 to prevent the material in the bucket 122 from slipping prematurely in the non-discharge area.

[0044] Specifically, if Figures 1 to 4 As shown, the bucket wheel body 121 is driven to rotate by a motor or a hydraulic drive device. As the bucket wheel body 121 rotates, the bucket 122 enters the material pile in turn and grabs the material. After the bucket 122 grabs the material, as the bucket wheel body 121 rotates, the bucket 122 lifts the material to the upper part of the bucket wheel 12, so that the material is gradually lifted to the position of the discharge port. In the non-discharge area of ​​the bucket wheel 12, the arc baffle plate 123 can prevent the material from sliding prematurely, ensuring that the material can smoothly reach the discharge port; when the bucket 122 rotates to the discharge port position, the material slides from the bucket 122 under the action of gravity, and smoothly enters the lower hopper 2 through the guide plate 13 for subsequent uniform discharge and crushing. Among them, the inclined design of the guide plate 13 ensures that the material can transition smoothly, reducing the impact and scattering of the material during the transportation process.

[0045] The material is then transported to the conveyor belt 11 by the conveyor shaft 31 and then to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 by the conveyor shaft 31. The material is then transported to the conveyor belt 11 by the conveyor shaft 31. The material is then transported to the conveyor belt 11 by the conveyor shaft 31. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 by the conveyor shaft 31. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11. The material is then transported to the conveyor belt 11 for transporting the material to the conveyor belt 11.

[0046] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A coal stacking and taking device for transporting fuel in a thermal power plant, comprising a frame (1), a conveying assembly and a loading assembly being provided on the frame (1), the conveying assembly comprising a conveyor belt (11) for conveying materials, characterized in that: It also includes a feeding mechanism and a crushing mechanism provided on the frame (1), and the feeding assembly can grab the material and convey it to the feeding mechanism; The unloading mechanism comprises a unloading hopper (2) and an auger assembly, wherein the auger assembly comprises a plurality of auger shafts (3) rotatably arranged in the unloading hopper (2), wherein the rotation axis of each auger shaft (3) is arranged along the width direction of the conveyor belt (11), and the plurality of auger shafts (3) are sequentially arranged along the length direction of the conveyor belt (11), an auger blade (31) is installed on the outer side of each auger shaft (3), and the outer peripheral sides of two adjacent auger blades (31) have a set gap, with the side facing the conveying direction of the auger assembly as the front side, and the pitch of the front end of the auger blade (31) is greater than the pitch of the rear end of the auger blade (31); The rotational speeds of two adjacent auger shafts (3) are different, so that the material is crushed by the relative movement of two adjacent auger blades (31). The crushing mechanism is arranged at the front end of the auger assembly and is used to crush materials whose size is larger than the pitch of the auger blades (31).

2. A coal piling and taking device for transporting fuel in a thermal power plant according to claim 1, characterized in that: The crushing mechanism comprises a pressing plate (4) and a driving assembly. The pressing plate (4) is mounted in the lower hopper (2) for sliding movement up and down, and a crushing station is formed between the lower end of the pressing plate (4) and the front end of the auger assembly. The driving structure is used to drive the pressing plate (4) to move up and down.

3. The coal piling and taking device for transporting fuel in a thermal power plant according to claim 2, characterized in that: The driving assembly includes a driving rod (41) and a contact block (42). A sliding groove for the longitudinal sliding of the pressure plate (4) is provided in the lower hopper (2), and an elastic member (43) is provided between the pressure plate (4) and the lower hopper (2). The elastic force direction of the elastic member (43) is the same as the sliding direction of the pressure plate (4). The contact block (42) is provided at the lower end of the pressure plate (4). The driving rod (41) is installed on one of the auger shafts (3) along the radial direction of the auger shaft (3). When the auger shaft (3) rotates, the driving rod (41) can contact the contact block (42) and push the contact block (42) to move upward, so that the elastic member (43) contracts.

4. The coal piling and taking device for transporting fuel in thermal power plants according to claim 3, characterized in that: The driving assembly further includes a limiting structure, which includes a support member (44), a stopper 1 (45), a stopper 2 (46) and an unlocking member. The support member (44) is horizontally slidably arranged in the lower hopper (2), and an elastic member 2 (47) is provided between the support member (44) and the lower hopper (2). The elastic force direction of the elastic member 2 (47) is the same as the sliding direction of the support member (44). The stopper 1 (45) is provided on the side of the support member (44) facing the pressure plate (4). The stopper 2 (46) is provided on the side of the support member (44) facing the pressure plate (4). 6) is provided on the side of the pressure plate (4) facing the support member (44), the upper and lower ends of the stopper one (45) are respectively provided with a contact surface one and an inclined surface one, the contact surface one is arranged horizontally, and the inclined surface one is inclined from top to bottom toward the direction of approaching the support member (44), the upper end of the stopper two (46) is provided with an inclined surface two adapted to the inclined surface one, and the lower end of the stopper two (46) is provided with a contact surface two adapted to the contact surface one, and the unlocking member is used to drive the support member (44) to move in a direction away from the pressure plate (4).

5. The coal piling and taking device for transporting fuel in thermal power plants according to claim 4, characterized in that: The unlocking member is a push rod (48), which is installed on the other auger shaft (3) along the radial direction of the auger shaft (3). When the auger shaft (3) rotates, the push rod (48) can contact the support member (44) and push the support member (44) to move in a direction away from the pressure plate (4).

6. The coal piling and taking device for transporting fuel in a thermal power plant according to claim 1, characterized in that: A support structure is provided on the frame (1), and the support structures are provided in multiple groups and are arranged at intervals along the length direction of the conveyor belt (11). Each group of support structures includes multiple support rollers (111). The multiple support rollers (111) are arranged in sequence along the width direction of the conveyor belt (11), and the support rollers (111) located on both sides are inclined to form a trough-shaped structure of the conveyor belt (11).

7. The coal piling and taking device for transporting fuel in thermal power plants according to claim 6, characterized in that: A tensioning roller (112) for adjusting the tension of the conveyor belt (11) is provided on the frame (1).

8. The coal piling and taking device for transporting fuel in a thermal power plant according to claim 1, characterized in that: The loading assembly includes a bucket wheel (12), the bucket wheel (12) includes a bucket wheel body (121) and a bucket (122), the bucket wheel body (121) is rotatably mounted on the frame (1), a plurality of buckets (122) are provided, and the plurality of buckets (122) are evenly mounted on the outer periphery of the bucket wheel body (121) along the circumference of the bucket wheel body (121).

9. The coal piling and taking device for transporting fuel in a thermal power plant according to claim 8, characterized in that: The feeding assembly further comprises a guide plate (13), which is arranged to be tilted from top to bottom, with the upper end of the guide plate (13) being connected to the discharge port provided on the bucket wheel (12), and the lower end extending into the lower hopper (2).

10. The coal piling and taking device for transporting fuel in a thermal power plant according to claim 8, characterized in that: The bucket wheel (12) further includes an arc material blocking plate (123), which is mounted on the inner side of the bucket wheel body (121) and is used to prevent the material in the bucket (122) from sliding prematurely in the non-discharging area.

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