A coal stacking and drawing device for fuel transportation of a thermal power plant

Abstract

The present application relates to the technical field of transportation equipment, and discloses a coal stacking and taking device for fuel transportation in a thermal power plant, which 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, the auger assembly comprises a plurality of auger shafts rotatably arranged in the discharging hopper, each auger shaft is provided with an auger blade on the outer side, the side of the auger blade facing the conveying direction of the auger assembly is the front side, the pitch of the front end of the auger blade is greater than the pitch of the rear end of the auger blade, and the rotation speeds of the adjacent two auger shafts are different; the present application can uniformly scatter the materials on the conveying belt through the conveying of the auger assembly, effectively reduces the local impact on the conveying belt and the uneven load of the conveying belt, prolongs the service life of the conveying belt, and crushes the materials through the differential rotation and pitch change of the crushing mechanism and the auger blade, reduces the resistance in the conveying process, and improves the conveying efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transportation equipment, in particular to a coal stacking and taking device for fuel transportation of a thermal power plant. BACKGROUND

[0002] In the fuel transportation system of a thermal power plant, coal as the main energy supply, its efficient and stable transportation and storage are the key link to ensure the continuous operation of the power plant. The bucket wheel stacker-reclaimer, as an advanced bulk material handling equipment, plays an important role in the transportation and storage of fuel due to its efficient stacking and taking operation capability and high automation control level. The bucket wheel stacker-reclaimer has the functions of stacking and taking materials. It grabs, transports and stacks materials through the rotating bucket wheel. When stacking, the bucket wheel stacker-reclaimer receives bulk materials from the stockyard conveyor and transfers them to the designated stockpile. When taking, the bucket wheel stacker-reclaimer digs materials from the stockpile and transfers them to the stockyard conveyor for further distribution or use.

[0003] The patent document with the authorized announcement number CN118529509B discloses an environment-friendly bucket wheel stacker-reclaimer, which includes a walking structure, a rotating platform fixedly installed at the top end of the walking structure, a suspension installed movably at one side of the top end of the rotating platform, a suspension belt conveyor installed inside the suspension, a bucket wheel rotatably installed inside one side of the suspension, a guide cover fixedly installed at one end of the suspension belt conveyor at the top end of the rotating platform, and a screening guide structure fixedly installed inside the guide cover. The purpose of adjusting the lifting, rotation and stretching of the conveyor belt is achieved, thereby making the material falling point more accurate and improving the production efficiency. When in use, the bucket wheel transfers materials and transfers them to the suspension belt conveyor. The materials are transported by the suspension belt conveyor. The transported materials enter the guide cover. The materials are divided into different conveyors according to different sizes through the guide cover, realizing the classification of the materials.

[0004] When using the above-mentioned material taking machine to take materials, the materials are usually directly poured from the bucket wheel to the suspension belt conveyor, which will cause a large local impact on the conveyor belt, leading to accelerated wear and tear of the conveyor belt and shortened service life. In addition, the materials poured on the conveyor belt may be concentrated on one side of the conveyor belt, causing uneven load of the conveyor belt and affecting the conveying efficiency and stability. Moreover, the materials, especially large pieces of materials, in the conveying process are easy to cause blockage, slipping or equipment wear of the conveyor belt. SUMMARY

[0005] The present application provides a coal stacking and taking device for fuel transportation of a thermal power plant, which aims to solve the problems of the related art that the materials will cause a large local impact on the conveyor belt, leading to accelerated wear and tear of the conveyor belt and shortened service life, and uneven load of the conveyor belt, affecting the conveying efficiency and stability, and large pieces of materials are easy to cause blockage, slipping or equipment wear of the conveyor belt.

[0006] The coal stacking and taking device for fuel transportation of a thermal power plant comprises a frame body, a conveying assembly and a feeding assembly arranged on the frame body, the conveying assembly comprises a conveying belt for conveying materials, and further comprises a discharging mechanism and a crushing mechanism arranged on the frame body, the feeding assembly can grab materials and convey them into the discharging mechanism;

[0007] The discharging mechanism comprises a discharging hopper and an auger assembly, the auger assembly comprises a plurality of auger shafts rotatably arranged in the discharging hopper, the rotation axis of each auger shaft is arranged along the width direction of the conveying belt, and the plurality of auger shafts are arranged in sequence along the length direction of the conveying belt, an auger blade is mounted on the outer side of each auger shaft, and the outer circumferential sides of adjacent two auger blades have a set gap, one side of the auger assembly conveying direction is defined as the front side, the pitch of the front end of the auger blade is greater than the pitch of the rear end of the auger blade.

[0008] The rotation speeds of adjacent two auger shafts are different, so that the relative movement of adjacent two auger blades can crush the materials, and the crushing mechanism is arranged at the front end of the auger assembly to crush the materials with a size greater than the pitch of the auger blade.

[0009] In use, the feeding mechanism is used to grab materials and transfer them into the discharging hopper, after the materials enter the discharging hopper, they will first fall above the auger assembly and then fall on the conveying belt, which can effectively reduce the local impact of the materials on the conveying belt and prolong the service life of the conveying belt; through the rotation of the auger blade, the materials falling above the auger assembly will enter the conveying channel formed by the auger blade, then be conveyed forward along the width direction of the conveying belt, and gradually fall on the width direction of the conveying belt during the conveying process, so as to realize uniform discharging of the materials, effectively reduce the uneven load of the conveying belt, and improve the stability of the conveying process; during the conveying process, the differential rotation and pitch change between adjacent two auger blades can exert shearing force and extrusion on the materials to crush the materials, and the crushing mechanism can impact and crush the large materials with a size greater than the pitch of the auger blade, so as to ensure that the particle size of the materials meets the requirements of subsequent conveying and processing, reduce the resistance in the conveying process, and improve the conveying efficiency.

[0010] Preferably, the crushing mechanism comprises a pressing plate and a driving assembly, the pressing plate is slidably installed in the discharging hopper, and a crushing station is formed between the lower end of the pressing plate and the front end of the auger assembly, and the driving structure is used to drive the pressing plate to move up and down, which can exert pressure on the materials conveyed to the front end of the auger assembly through the movement of the pressing plate to extrude and crush the materials, so as to crush the materials with a size greater than the pitch of the auger blade into smaller particles, make them pass through the auger blade and fall on the conveying belt, reduce the resistance in the conveying process, and improve the conveying efficiency.

[0011] Preferably, the driving assembly comprises a driving rod and a contact block, the lower hopper is provided with a sliding groove for longitudinal sliding of the pressing plate, and an elastic member one is arranged between the pressing plate and the lower hopper, the elastic force direction of the elastic member one is the same as the sliding direction of the pressing plate, the contact block is arranged at the lower end of the pressing plate, the driving rod is installed on one of the auger shafts in 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, so that the elastic member one is contracted.

[0012] Preferably, the driving assembly further comprises a limiting structure, the limiting structure comprises a supporting piece, a stop block one, a stop block two and an unlocking member, the supporting piece is horizontally slidably arranged in the lower hopper, and an elastic member two is arranged between the supporting piece and the lower hopper, the elastic force direction of the elastic member two is the same as the sliding direction of the supporting piece, the stop block one is arranged on the side of the supporting piece facing the pressing plate, the stop block two is arranged on the side of the pressing plate facing the supporting piece, the upper and lower ends of the stop block one are respectively provided with a contact surface one and an inclined surface one, the contact surface one is horizontally arranged, the inclined surface one is inclined from top to bottom towards the supporting piece, the upper end of the stop block two is provided with an inclined surface two matched with the inclined surface one, and the lower end of the stop block two is provided with a contact surface two matched with the contact surface one, and the unlocking member is used to drive the supporting piece to move away from the pressing plate.

[0013] Preferably, the unlocking member is a push rod, the push rod is installed on the other auger shaft in the radial direction of the auger shaft, when the auger shaft rotates, the push rod can contact the supporting piece and push the supporting piece to move away from the pressing plate, which has the effect that the pressing plate can be pushed upward by the cooperation of the driving rod and the contact block, and the pressing plate can be kept at the upper position of the sliding groove by the limiting structure, then the pressing plate can be quickly reset under the action of the elastic member one by the cooperation of the push rod and the supporting piece, the pressing plate impact force is improved, and the crushing effect on the material is improved.

[0014] Preferably, the frame body is provided with a supporting structure, the supporting structure is arranged in multiple groups and is arranged in the length direction of the conveying belt at intervals, each group of supporting structures comprises a plurality of supporting rollers, the plurality of supporting rollers are arranged in the width direction of the conveying belt in sequence, and the supporting rollers located on both sides are inclinedly arranged to form a groove-shaped structure of the conveying belt, which has the effect that the material can be limited in the groove-shaped area of the conveying belt, so that the material remains stable during conveying, and the material carrying capacity of the conveying belt is increased, and the conveying efficiency is improved.

[0015] Preferably, the frame body is provided with a tensioning roller for adjusting the tension of the conveying belt, which has the effect that the conveying belt can always maintain appropriate tension during operation, avoiding slipping or deviation due to relaxation, and prolonging the service life of the conveying belt.

[0016] Preferably, the feeding assembly comprises a bucket wheel, the bucket wheel comprises a bucket wheel body and buckets, the bucket wheel body is rotationally arranged on the frame body, and the buckets are uniformly arranged on the outer periphery of the bucket wheel body in a circumferential direction.

[0017] Preferably, the feeding assembly further comprises a guide plate, the guide plate is arranged in a downwardly inclined manner, the upper end of the guide plate is connected to the discharge port arranged on the bucket wheel, and the lower end of the guide plate extends into the discharge hopper.

[0018] Preferably, the bucket wheel further comprises an arc-shaped blocking plate, the arc-shaped blocking plate is arranged on the inner side of the bucket wheel body, and the arc-shaped blocking plate is used for preventing the material in the bucket from sliding down in a non-discharge area.

[0019] The present application has the following beneficial effects:

[0020] 1. The present application is provided with a discharging mechanism, the auger assembly is arranged, so that the material first falls above the auger blade, instead of directly impacting the conveying belt, thereby effectively reducing the local impact of the material on the conveying belt, prolonging the service life of the conveying belt, in addition, through the conveying of the material in the discharge hopper by the auger assembly, the material can be gradually scattered in the width direction of the conveying belt, realizing uniform distribution of the material, effectively reducing the uneven load of the conveying belt, and improving the conveying efficiency and stability during the conveying process.

[0021] 2. The present application can apply shearing force and extrusion to the material entering the conveying channel through the pitch change and differential rotation of the auger blade, so as to realize preliminary crushing of the material, and at the same time, for the material with a size greater than the pitch of the auger blade, the material can be impacted and crushed by the movement of the pressing plate when it moves to the front end of the auger assembly, so as to ensure that the particle size of the material meets the requirements of subsequent conveying and processing, reduce the resistance in the conveying process, and improve the conveying efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present application.

[0023] Figure 2 is a front view of the present application.

[0024] Figure 3 is a schematic diagram of the assembly structure of the auger assembly and the discharge hopper of the present application.

[0025] Figure 4 is a schematic diagram of the assembly structure of the auger assembly and the discharge hopper of the present application.

[0026] Figure 5 is a schematic diagram of the crushing mechanism of the present application in the initial state.

[0027] Figure 6 is a schematic diagram of the crushing mechanism of the present application in the initial state.

[0028] Figure 7 is a structural schematic view of the support structure of the present application.

[0029] Figure 8 is a structural schematic view of the first stop block of the present application.

[0030] Figure 9 is a structural schematic view of the second stop block of the present application.

[0031] Reference signs:

[0032] 1, frame body; 11, conveying belt; 111, supporting roller; 112, tensioning roller; 12, bucket wheel; 121, bucket wheel body; 122, bucket; 123, arc-shaped material blocking plate; 13, material guide plate; 2, lower hopper; 3, auger shaft; 31, auger blade; 32, driving member; 4, pressing plate; 41, driving rod; 42, contact block; 43, first elastic member; 44, supporting member; 45, first stop block; 46, second stop block; 47, second elastic member; 48, push rod. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] As Figures 1 to 9 shown, the coal stacking and taking device for fuel transportation in a thermal power plant of the present application comprises a moving structure, a conveying assembly, a material feeding assembly, a material discharging mechanism and a crushing mechanism.

[0035] The frame body 1 is installed at the front end of the moving structure, the conveying assembly, the material feeding assembly and the material discharging mechanism are all installed on the frame body 1, the conveying assembly comprises a conveying belt 11 for conveying materials, the material feeding assembly comprises a bucket wheel 12 for grabbing materials, the bucket wheel 12 is installed on one side of the conveying belt 11, and the material discharging mechanism is used for transmitting the materials grabbed by the bucket wheel 12 to the conveying belt 11. In use, the frame body 1 is moved to the material pile for taking materials by moving of the moving structure, and the specific taking material mode is that the materials in the material pile are grabbed by rotation of the bucket wheel 12, and then the materials are transmitted to the material discharging mechanism, and then the materials are transmitted to the conveying belt 11 by the material discharging mechanism, and finally the materials are conveyed by the conveying belt 11, wherein the crushing mechanism is arranged in the material discharging mechanism, and can crush the materials transmitted to the material discharging mechanism.

[0036] The discharging mechanism comprises a discharging hopper 2 and an auger assembly. The discharging hopper 2 is installed at the discharging area of the bucket wheel 12, and the upper and lower ends of the discharging hopper 2 are respectively provided with an inlet and an outlet. The inlet is in the shape of a horn, which can effectively expand the receiving range of the material, ensure that the material falling from the bucket wheel 12 can smoothly enter the discharging hopper 2, and reduce the risk of material falling. The auger assembly comprises a plurality of auger shafts 3 rotatably arranged in the discharging hopper 2, and the discharging hopper 2 is provided with a driving member 32 for independently driving each auger shaft 3 to rotate. The driving member 32 can be a motor. The rotation axis of each auger shaft 3 is arranged along the width direction of the conveying belt 11, and the plurality of auger shafts 3 are arranged in sequence along the length direction of the conveying belt 11. The outer side of each auger shaft 3 is provided with an auger blade 31, and the outer circumferential sides of adjacent two auger blades 31 have a set gap. The side towards the conveying direction of the auger assembly is 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. The rotation speeds of adjacent two auger shafts 3 are different, so as to realize the crushing of the material through the relative movement of adjacent two auger blades 31. The crushing mechanism is arranged at the front end of the auger assembly, and is used for crushing the material with a size greater than the pitch of the auger blade 31.

[0037] Specifically, as shown in Figures 1 to 5 The material is grabbed from the material pile by the bucket wheel 12 and discharged into the discharging hopper 2. The material will first fall on the rear end of the auger blade 31. Since the pitch of the rear end of the auger blade 31 is small, most of the material will not directly pass through the auger blade 31 and fall onto the conveying belt 11 below, but fall above the auger assembly or enter the conveying channel formed by the auger blade 31. At the same time, the pitch of the front end of the auger blade 31 is large, which ensures that the material entering the spiral channel can subsequently fall smoothly onto the conveying belt 11 and will not accumulate in the conveying channel. In addition, the outer circumferential sides of adjacent auger blades 31 have a set gap, which can prevent the auger blades 31 from colliding during operation, thereby reducing wear and damage and prolonging the service life of the equipment. The size of the gap needs to be controlled within a reasonable range, so that the material in the conveying channel is tightly constrained between the blades, and the material falling from the gap between adjacent two auger blades 31 is avoided.

[0038] 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, then be conveyed forward by the spiral structure of the auger blade 31, and gradually fall onto the conveyor belt 11 during the conveying process, achieving uniform material discharge; in addition, due to the different rotation speeds of adjacent auger shafts 3, relative motion occurs between adjacent auger blades 31, which, combined with the change in blade pitch, can exert shear force and extrusion on the material, achieving material crushing. Since some materials with a size greater than the pitch of the auger blade 31 cannot enter the conveying channel to 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 conveying and processing. The crushed material will enter the conveying channel and fall onto the conveyor belt 11, which will convey the material to the subsequent processing or storage area, completing the entire material conveying process. Therefore, after the material is poured from the bucket wheel 12, it will fall above the auger assembly instead of directly impacting the conveyor belt 11, reducing the local impact of the material on the conveyor belt 11 and prolonging the service life of the conveyor belt 11. At the same time, the auger assembly can uniformly convey the material forward by rotating its blades and make it gradually fall onto the conveyor belt 11 below during the conveying process, achieving uniform distribution of the material in the width direction of the conveyor belt 11, reducing uneven loading of the conveyor belt 11, effectively improving the stability of the material during the conveying process. In addition, the change in pitch and differential rotation of the auger blade 31 can preliminarily crush the material during the conveying process, reducing resistance during the conveying process and improving conveying efficiency.

[0039] In some embodiments, the crushing mechanism includes a pressure plate 4 and a driving assembly. The pressure plate 4 is slidably installed in the lower hopper 2 and a crushing station is formed between the lower end of the pressure plate 4 and the front end of the auger assembly. The driving structure is used to drive the pressure plate 4 to move up and down.

[0040] Specifically, as shown in Figures 2 to 6 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 with a size greater than the pitch of the auger blade 31 cannot enter the conveying channel and will be continuously trapped above the auger assembly and gradually pushed to the front end of the auger assembly during the rotation of the auger blade 31. 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 pressure plate 4 is driven downward by the driving assembly to apply pressure to the material, extruding and impacting this part of the material at the front end of the auger blade 31, achieving preliminary crushing and making the material into smaller particles. The crushed material passes through the conveying channel and falls onto the conveyor belt 11 for conveying, completing the entire crushing and conveying process.

[0041] In some embodiments, the driving assembly comprises a driving rod 41 and a contact block 42, the lower hopper 2 is provided with a sliding groove for longitudinal sliding of the pressing plate 4, and the pressing plate 4 and the lower hopper 2 are provided with an elastic member I 43 for driving the pressing plate 4 to reset, the elastic force direction of the elastic member I 43 is the same as the sliding direction of the pressing plate 4, the elastic member I 43 can be a spring, the contact block 42 is arranged at the lower end of the pressing 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 I 43 is contracted.

[0042] Specifically, as shown in Figures 2 to 6 the initial state, the pressing plate 4 is kept in the lower position of the lower hopper 2 under the action of the elastic force of the elastic member I 43, since 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 rotates with it, 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, at the same time, it pushes the pressing plate 4 to move upward along the sliding groove and overcomes the elastic force of the elastic member I 43, when the driving rod 41 continues to rotate and is separated from the contact block 42, the pressing plate 4 resets to the initial position under the action of the elastic force of the elastic member I 43, in the process, the pressing plate 4 can exert downward pressure on the material in the crushing station, extruding the material at the front end of the auger blade 31, realizing 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 exert pressure on the material, realizing the crushing of the large block material, avoiding the accumulation of the material at the front end of the auger assembly, improving the conveying efficiency and stability.

[0043] In some embodiments, the driving assembly further comprises a limiting structure, the limiting structure comprising a support 44, a stopper one 45, a stopper two 46 and an unlocking member, the support 44 is horizontally slidingly arranged in the lower hopper 2, and an elastic member two 47 is arranged between the support 44 and the lower hopper 2, the elastic force direction of the elastic member two 47 is the same as the sliding direction of the support 44, the elastic member two 47 can be a spring, the stopper one 45 is arranged on the side of the support 44 away from the elastic member two 47, the end of the pressing plate 4 is provided with a sliding block, the pressing plate 4 is longitudinally slidingly matched with a sliding groove arranged in the lower hopper 2 through the sliding block, the stopper two 46 is arranged on the side of the sliding block facing the stopper one 45, 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 horizontally arranged, the inclined surface one is inclined from top to bottom towards the direction close to the support 44, the upper end of the stopper two 46 is provided with an inclined surface two matched with the inclined surface one, and the lower end of the stopper two 46 is provided with a contact surface two matched with the contact surface one, the unlocking member is a push rod 48, the push rod 48 is installed on another 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 44 and move the support 44 away from the pressing plate 4.

[0044] Specifically, as shown in Figures 2 to 9 the initial state, the elastic member one 43 provides a downward elastic force to keep the pressing plate 4 at the lower position of the sliding groove, and the elastic member two 47 provides a horizontal elastic force to keep the support 44 at the position close to the pressing plate 4, when the auger shaft 3 rotates, the driving rod 41 rotates, when the driving rod 41 contacts the contact block 42, the contact block 42 is pushed to move upward, and the pressing plate 4 is moved upward along the sliding groove, so that the elastic member one 43 is compressed to store energy, in the process of the upward movement of the pressing plate 4, the inclined surface two of the stopper two 46 can contact the inclined surface one of the stopper one 45, at this time, with the continuous upward movement of the pressing plate 4, the support 44 is pushed to move away from the pressing plate 4 under the guidance of the inclined surface one and the inclined surface two, and the elastic member two 47 is compressed to store energy, when the stopper two 46 passes the stopper one 45, the elastic member two 47 releases the stored energy to drive the support 44 to move close to the pressing plate 4 to reset, so that the contact surface two of the stopper two 46 contacts the contact surface one of the stopper one 45 to limit the stopper two 46, that is, to limit the pressing plate 4, so that the pressing plate 4 is kept at the upper position of the sliding groove;

[0045] The following describes an example in which four auger shafts 3 are installed in the hopper 2, and four auger shafts 3 are defined as shaft one, shaft two, shaft three, and shaft four along the length direction of the conveying belt 11, wherein the rotation speeds of shaft one and shaft three are consistent, and the rotation speeds of shaft two and shaft four are consistent, so that the rotation speeds of adjacent two auger shafts 3 are different, in addition, drive rods 41 are respectively installed on shaft one and shaft three, and push rods 48 are respectively installed on shaft two and shaft four, in the process of rotation of shaft one and shaft three, the drive rods 41 can cooperate with the contact blocks 42 to push the pressing plate 4 to move upward, and the pressing plate 4 is kept at the upper position of the sliding groove through the limiting structure, in the process of rotation of shaft two and shaft four, the push rods 48 rotate, when the push rods 48 contact the supporting pieces 44, the supporting pieces 44 can be pushed to move away from the pressing plate 4, and the stop block one 45 is synchronously moved, with the movement of the stop block one 45, the stop block two 46 loses the blocking of the stop block one 45, that is, the limiting of the pressing plate 4 is released, at this time, the pressing plate 4 is quickly moved downward to reset under the action of the elastic piece one 43, and the material located at the crushing station is impacted and crushed, with the reset of the pressing plate 4, the supporting pieces 44 and the stop block one 45 are reset to the initial position under the action of the elastic piece two 47, and the limiting operation is performed next time, therefore, through the limiting structure, the pressing plate 4 can be stored with power, the downward pressing speed of the pressing plate 4 is improved, and the crushing effect on the material is improved.

[0046] In some embodiments, the frame body 1 is provided with a supporting structure, the supporting structure is provided in multiple groups and is arranged at intervals along the length direction of the conveying belt 11, each group of supporting structures includes multiple supporting rollers 111, the multiple supporting rollers 111 are arranged in sequence along the width direction of the conveying belt 11, and the supporting rollers 111 located at both sides are arranged obliquely, so that the conveying belt 11 forms a groove-shaped structure.

[0047] Specifically, as shown in Figure 1 and Figure 7 , the two side edges of the conveying belt 11 are raised through the supporting structure, the side edges are formed at both sides of the conveying belt 11, the material is limited in the groove-shaped area of the conveying belt 11, the problem of material falling caused by vibration, impact or deviation of the conveying belt 11 is reduced, the material is kept stable during the conveying process, at the same time, the design of the groove-shaped structure can increase the material carrying capacity of the conveying belt 11 and improve the conveying efficiency.

[0048] In some embodiments, the frame body 1 is provided with a tensioning roller 112 for adjusting the tension of the conveying belt 11, as shown in Figure 2As shown, through the adjustment of the tensioning roller 112, it can ensure that the conveying belt 11 always maintains appropriate tension during operation, avoids slipping or deviation due to relaxation, improves conveying efficiency, reduces equipment wear and prolongs the service life of the conveying belt 11, wherein the tensioning roller 112 is installed on the non-load-bearing side of the conveying belt 11, located below the conveying belt 11, and the tensioning roller 112 is fixed on the frame body 1 by a bracket, which is usually designed to be adjustable to adjust the position of the tensioning roller 112 as needed.

[0049] In some embodiments, the bucket wheel 12 includes a bucket wheel body 121 and buckets 122, the bucket wheel body 121 is rotatably installed on the frame body 1, and is usually a circular disc, and the buckets 122 are provided in multiple numbers and uniformly distributed along the circumference of the bucket wheel body 121 at the outer periphery of the bucket wheel body 121 for grabbing and loading materials, and the feeding assembly further includes a guide plate 13, which is arranged inclined from top to bottom, the upper end of the guide plate 13 is connected with the discharge port provided on the bucket wheel 12, and the lower end extends into the discharge hopper 2, wherein the bucket wheel 12 further includes an arc baffle 123, which is installed on the inner side of the bucket wheel body 121 for preventing the material in the bucket 122 from sliding down in the non-discharge area.

[0050] Specifically, as Figures 1 to 4 shown, the bucket wheel body 121 is driven to rotate by a motor or hydraulic drive device, with the rotation of the bucket wheel body 121, the buckets 122 enter the material pile in turn and grab the material, when the buckets 122 grab the material, with the rotation of the bucket wheel body 121, the buckets 122 lift 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 123 can prevent the material from sliding down in advance, ensuring that the material can smoothly reach the discharge port; when the bucket 122 rotates to the discharge port position, the material slides down from the bucket 122 under the action of gravity and smoothly enters the discharge hopper 2 through the guide plate 13 for subsequent uniform feeding and crushing, wherein the inclined design of the guide plate 13 ensures smooth transition of the material and reduces impact and spilling of the material during conveying.

[0051] The coal stacking and reclaiming device provided by this invention uses the rotation of the bucket wheel 12 to grab and transfer materials, and then transfers the materials to the feeding hopper 2. After entering the feeding hopper 2, the materials first fall above the auger assembly instead of directly impacting the conveyor belt 11, avoiding localized impact on the conveyor belt 11 and extending its service life. Then, through the rotation of the auger shaft 3, this part of the material enters the conveying channel formed by the auger blades 31 and is conveyed forward. During the conveying process, it gradually disperses into the width direction of the conveyor belt 11, achieving uniform material feeding and preventing the conveyor belt 11 from being affected by uneven load, thus ensuring conveying stability. During the conveying process, due to the differential rotation and pitch change between two adjacent auger blades 31, shearing and extrusion forces can be applied to the materials, achieving material crushing. At the same time, the pressure plate 4 can impact and crush large pieces of material larger than the pitch of the auger blades 31, ensuring that the particle size of the material meets the requirements of subsequent conveying and processing, reducing resistance during the conveying process, and improving conveying efficiency.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal stacking and taking device for fuel transportation of a thermal power plant, comprising a frame body, a conveying assembly and a feeding assembly arranged on the frame body, the conveying assembly comprising a conveying belt for conveying materials, characterized in that, The material feeding mechanism and the crushing mechanism are arranged on the frame body, the material feeding assembly can grab the material and deliver it into the material feeding mechanism; The material feeding mechanism comprises a material feeding hopper and an auger assembly, the auger assembly comprises a plurality of auger shafts rotatably arranged in the material feeding hopper, the rotation axis of each auger shaft is arranged along the width direction of the conveying belt, and the plurality of auger shafts are arranged in sequence along the length direction of the conveying belt, the outer side of each auger shaft is provided with an auger blade, and the outer circumferential sides of the adjacent two auger blades have a set gap, one side of the auger assembly in the conveying direction is defined as the front side, 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 the adjacent two auger shafts are different, so that the crushing of the material is realized through the relative movement of the adjacent two auger blades, and the crushing mechanism is arranged at the front end of the auger assembly and used for crushing the material with a size greater than the pitch of the auger blade; The crushing mechanism comprises a pressing plate and a driving assembly, the pressing plate is slidably arranged in the material feeding hopper, and a crushing station is formed between the lower end of the pressing plate and the front end of the auger assembly, and the driving structure is used for driving the pressing plate to move up and down. The driving assembly comprises a driving rod, a contact block and a limiting structure, the material feeding hopper is provided with a sliding groove for the longitudinal sliding of the pressing plate, and an elastic member one is arranged between the pressing plate and the material feeding hopper, the elastic force direction of the elastic member one is the same as the sliding direction of the pressing plate, the contact block is arranged at the lower end of the pressing plate, the driving rod is arranged 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, so that the elastic member one is contracted. The limiting structure comprises a supporting piece, a stop block one, a stop block two and an unlocking member, the supporting piece is horizontally slidably arranged in the material feeding hopper, an elastic member two is arranged between the supporting piece and the material feeding hopper, the elastic force direction of the elastic member two is the same as the sliding direction of the supporting piece, the stop block one is arranged on the side of the supporting piece facing the pressing plate, the stop block two is arranged on the side of the pressing plate facing the supporting piece, the upper and lower ends of the stop block one are respectively provided with a contact surface one and an inclined surface one, the contact surface one is horizontally arranged, the inclined surface one is inclined from top to bottom towards the supporting piece, the upper end of the stop block two is provided with an inclined surface two matched with the inclined surface one, the lower end of the stop block two is provided with a contact surface two matched with the contact surface one, and the unlocking member is used for driving the supporting piece to move away from the pressing plate. The unlocking member is a push rod, the push rod is arranged on another auger shaft along the radial direction of the auger shaft, when the auger shaft rotates, the push rod can contact the supporting piece and push the supporting piece to move away from the pressing plate.

2. A coal stacking and unstacking device for fuel transportation in a thermal power plant according to claim 1, characterized in that, The frame body is provided with a supporting structure, the supporting structure is arranged in multiple groups and is arranged in sequence along the length direction of the conveying belt, each group of the supporting structure comprises a plurality of supporting rollers, the plurality of supporting rollers are arranged in sequence along the width direction of the conveying belt, and the supporting rollers located on the two sides are arranged obliquely, so that the conveying belt forms a groove-shaped structure.

3. A coal stacking and unstacking device for fuel transportation in a thermal power plant according to claim 2, characterized in that, The frame body is provided with a tensioning roller used for adjusting the tension of the conveying belt.

4. A coal stacking and unstacking device for fuel transportation in a thermal power plant according to claim 1, characterized in that, The material feeding assembly comprises a bucket wheel, the bucket wheel comprises a bucket wheel body and a plurality of buckets, the bucket wheel body is rotatably arranged on the frame body, the plurality of buckets are uniformly arranged on the outer periphery of the bucket wheel body along the circumferential direction of the bucket wheel body.

5. A coal stacking and unstacking device for fuel transportation in a thermal power plant according to claim 4, characterized in that, The material feeding assembly further comprises a guide plate, the guide plate is arranged obliquely from top to bottom, the upper end of the guide plate is connected to a discharge port arranged on the bucket wheel, and the lower end of the guide plate extends into the material feeding hopper.

6. A coal stacking and unstacking device for fuel transportation in thermal power plants according to the claim 4, characterized in that, The bucket wheel further comprises a circular arc material blocking plate, which is installed on the inner side of the bucket wheel body and used for preventing the material in the bucket from sliding down in the non-unloading area.

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