CN111689255A - Accurate blanking device and blanking method - Google Patents

Abstract

The invention discloses a precise blanking device and a blanking method, which comprises a belt conveyor, a machine head blanking hopper, a turning plate driving mechanism, a material stirring roller and two material sliding grooves, wherein the moving direction of a carriage below the precise blanking device is taken as the front, the two material sliding grooves are arranged in front of each other, the swinging axes of the two material sliding grooves are parallel to the rotating axis of the material stirring roller, the swinging axes of the two material sliding grooves are positioned at the feeding ends of the two material sliding grooves, and the feeding ends of the two material sliding grooves are positioned below the material stirring roller; the automatic feeding device is characterized by further comprising a control unit, and the belt conveyor, the turning plate driving mechanism, the roller driving mechanism and the chute driving mechanism are controlled by the control unit. The method comprises the following steps: the material flow direction is controlled by controlling the swinging of the turnover plate, the materials are loaded to each blanking point, and then the transition of the front carriage and the rear carriage is carried out, so that the loading of the whole train of carriages is realized in a reciprocating way, and the invention has the advantages that: on the basis of ensuring accurate loading, ensure high-efficient loading.

Description

Accurate blanking device and blanking method

Technical Field

The invention relates to the field of bulk material loading, in particular to a precise blanking device and a blanking method.

Background

In the prior art, for example, the chinese patent application with the publication number CN110187690A discloses an accurate automatic loading control system for railway freight, which comprises a loading management system, an automatic accurate loading metering system and an intelligent loading controller; the loading management system issues a loading plan to an automatic accurate loading metering system, loading information of a whole train is automatically processed, a whole train loading program is generated, loading instructions containing loading strategy information are sequentially sent to an intelligent loading controller according to a loading sequence, the intelligent loading controller receives the weighing information, carriage position information and skip angle information which are obtained simultaneously by the loading instructions of the automatic accurate loading metering system, an output shunting winch, a belt conveyor, a coal feeder and switch control signals of a hopper control the loading equipment to operate, and automatic loading is completed one by one. In the aspect of coal falling, coal feeders are arranged in all coal bunkers, belt conveyors are arranged below the coal feeders, a blanking hopper is arranged at the right end of each belt conveyor, the blanking hopper is connected with a coal falling adjusting hopper through a rotating mechanism, coal in a coal storage cabin is poured into a carriage of a vehicle through a belt and the hopper through the hopper during actual application, and the angle of the hopper can finely adjust the position of a coal loading point. The rotating speed and the position of the belt driving motor and the hopper angle adjusting motor can be controlled through the intelligent loading controller, so that small coal loading is realized during final loading, and accurate loading is realized.

When coal falls to the transition position of the front and rear carriages, the belt conveyor needs to be stopped firstly to prevent the coal from falling into the gap between the carriages accidentally when the coal falls to the transition position of the front and rear carriages, the coal on the belt conveyor stops falling into the blanking hopper, then the coal falls stops, then the hopper is adjusted from the position falling into one carriage to the position falling into the other carriage, a certain time is needed in the adjusting process, and a train can have dozens of carriages, so that the loading time is longer along with the accumulation of time, and the loading efficiency is lower.

Meanwhile, in the prior art, in order to ensure the accuracy of the coal loading weight, the coal conveying speed of the belt conveyor is reduced when the weight of the coal in the carriage is about to reach the standard weight, so that the fine adjustment of the coal dropping weight is realized, the reduction of the loading efficiency is caused, and the coal loading accuracy and the coal loading efficiency cannot be considered.

Disclosure of Invention

The invention aims to provide a precise blanking device and a blanking method, which ensure high-efficiency loading on the basis of ensuring precise loading.

The invention solves the technical problems through the following technical means: an accurate blanking device comprises a belt conveyor arranged on a frame;

a machine head blanking hopper is arranged at one end of the belt conveyor for blanking;

the machine head blanking hopper is hinged with a turning plate, a hinged shaft of the turning plate is positioned at the lower end of the turning plate, the hinged shaft is arranged along the horizontal direction and is vertical to the moving direction of the carriage below the accurate blanking device, and the machine head blanking hopper also comprises a turning plate driving mechanism;

the material shifting roller is rotatably arranged below the turning plate, the rotating axis of the material shifting roller is parallel to the hinged shaft of the turning plate, and the material shifting roller further comprises a roller driving mechanism;

the material shifting device comprises a material shifting roller, a material pushing roller and a material pushing roller, wherein two material sliding grooves are arranged below the material shifting roller in a swinging mode, the moving direction of a carriage below the material pushing roller is;

the belt conveyor, the turning plate driving mechanism, the roller driving mechanism and the chute driving mechanism are controlled by the control unit.

When the accurate blanking device is actually applied, the control unit controls the turning plate driving mechanism to act to drive the turning plate to swing, and the upper end of the turning plate swings backwards; dividing a plurality of virtual blanking points in each carriage according to the front-back direction, and driving a front sliding chute by a sliding chute driving mechanism to swing until the front sliding chute swings to the first blanking point of the carriage, wherein the falling materials in the sliding chute can fall; starting the belt conveyor, conveying materials by the belt conveyor to enter a machine head blanking hopper, then shunting to a front chute under the action of a turning plate, and then dropping to a first blanking point of a carriage; the carriage moves forward, and the front chute is swung upwards to ensure that the materials of the front chute continuously fall on the corresponding blanking point until the material pile of the blanking point reaches the preset weight or the preset height; the front chute is swung downwards until the material falls on the next blanking point, and the step s4 is repeated until the material in the front chute falls on the last blanking point of the carriage; when the blanking amount of the front carriage is about to reach the preset weight, the sliding chute driving mechanism drives the rear sliding chute to swing until the rear sliding chute swings to the first blanking point of the rear carriage, and the falling materials in the sliding chute can fall; the control unit controls the action of the turnover plate driving mechanism to drive the turnover plate to swing, and the upper end of the turnover plate swings forwards; the belt conveyor continuously conveys materials to enter a machine head blanking hopper, then the materials are shunted to a rear chute under the action of a turning plate and then fall to a first blanking point of a rear carriage, a roller driving mechanism is started at the same time, a material stirring roller is driven to rotate, a part of the materials falling from the turning plate are stirred to a front chute, the front chute and the rear chute both blank at the moment, the roller driving mechanism is subjected to frequency conversion control through a control unit, the rotating speed of the material stirring roller is automatically adjusted along with the approach of the loading amount of a front carriage, so that the feeding amount is accurately controlled until the weight of the front carriage reaches a preset weight, and the roller driving mechanism stops working; the carriage moves forward, the front chute and the rear chute are all swung downwards, the material of the rear chute falls on the first blanking point of the rear carriage, the upper end of the turning plate swings backwards until the front chute swings to the point that the material can fall on the first blanking point of the rear carriage, the material is shunted to the front chute under the action of the turning plate and then falls on the first blanking point of the rear carriage; and repeating the blanking steps until the blanking position is at the last blanking point of the last carriage, controlling the belt conveyor to reduce the running speed until the last carriage reaches a preset weight, stopping running the belt conveyor, and then swinging the front chute and the rear chute upwards to pack up so as to finish the loading work of the whole row of carriages. Through the process, accurate charging can be realized, and simultaneously in the charging process, when the front and rear vehicles are in transition, the belt conveyor always runs normally, and the charging can be continuously carried out through the cooperation of the front and rear chute, so that efficient charging is realized.

Preferably, the lower end of the turning plate is fixedly provided with a turning plate rotating shaft, the turning plate rotating shaft is rotatably arranged in the machine head blanking hopper, and a crank is arranged on the turning plate rotating shaft;

the turnover plate driving mechanism comprises a telescopic mechanism which is hinged on the frame, a hinged shaft is parallel to the turnover plate rotating shaft, and the movable end of the telescopic mechanism is hinged to a crank.

Preferably, the material stirring roller comprises a roller, a stirring sheet is arranged on the roller, and the axis of the roller is coplanar with the stirring sheet.

Optimized, every swift current silo installs and removes the structure installation through the swift current silo that corresponds fast, the swift current silo installs and removes the structure fast includes a pair of couple of fixed mounting, and the feed end of swift current silo is provided with the peg, and the peg is hung on the couple, and the peg is along the horizontal direction.

During the installation, only need with swift current silo lifting to the position that the couple was located, then hang the peg on the couple, can accomplish the installation to the swift current silo, for prior art, need not to install the fixed bolster under the loading storehouse on the girder, also need not align the mounting hole of swift current silo and the mounting hole on the fixed bolster when the installation, then penetrate the axle, steps such as alignment and wear the axle have been saved, can be very convenient install preset position with the swift current silo, during the dismantlement, only need with the swift current silo together with the peg take off from the couple together can, therefore, the installation and removal of whole swift current silo is comparatively convenient, and manpower and materials are saved.

Preferably, the hanging shaft is rotatably arranged at the feed end of the chute.

According to the demand of feeding, in practical application, the swift current silo can take place the swing, rotates the peg and installs on the swift current silo, can ensure smooth and easy swing of swift current silo.

Preferably, the hook opening is detachably provided with a locking piece to lock the hanging shaft in the hook.

The locking piece can inject the peg in the couple opening to prevent unexpected the coming off, the security is better.

Preferably, the chute comprises a chute bottom and side walls arranged at two sides of the chute bottom;

the middle of the bottom surface of the chute is provided with a flow equalizing piece, and the width of the flow equalizing piece is small at the front and large at the back by taking the flowing direction of materials in the chute.

When the material flowing device is in practical application, materials from the belt fall to the front end of the material flowing groove and naturally slide down under the action of gravity, when the materials flow, the materials can flow towards the flow equalizing piece, the width of the flow equalizing piece is small in the front and large in the back, and then the flowing materials can be divided, so that the materials can be divided from the middle to two sides, the flowing is uniform and good in mobility, when the flowing materials fall into a carriage below, the accumulated materials can be smooth, the conditions of high middle and low two sides can not be formed, when a follow-up train runs out, the material can be conveniently leveled, the resistance borne by the material leveling device is small, meanwhile, the flow equalizing piece can also break the material blocks with large sizes, the particle size of the materials is more uniform, in addition, when the materials flow, the flow equalizing piece can hook part of sundries, the material filtering effect is achieved, and the quality of the flowing.

Preferably, the top parts of the two side walls are provided with cover plates.

When the chute blanking, the dust of shedding is more, and the apron can form a relative confined space with the lateral wall of tank bottom and both sides, and then prevents that the dust from outwards shedding to prevent polluting space on every side.

Preferably, the flow equalizing piece is in the shape of a triangular pyramid, one triangle in the triangular pyramid is attached to the bottom surface of the groove, and one vertex of the triangle faces forwards.

The arrangement of the triangular pyramid shape can effectively divide the flow, so that the material flows more uniformly and smoothly.

The invention also discloses a blanking method adopting the accurate blanking device, which comprises the following steps:

s1, controlling the action of the flap driving mechanism through the control unit to drive the flap to swing, and enabling the upper end of the flap to swing backwards;

s2, dividing a plurality of virtual blanking points in each carriage according to the front-back direction, and driving a front chute to swing by a chute driving mechanism until the front chute swings to the first blanking point of the carriage where the falling material in the chute can fall;

s3, starting the belt conveyor, conveying materials by the belt conveyor to enter a machine head blanking hopper, then shunting to a front chute under the action of a turning plate, and then dropping to a first blanking point of the carriage;

s4, moving the carriage forward, and swinging the front chute upward to ensure that the material in the front chute continuously falls on the corresponding blanking point until the material pile at the blanking point reaches the preset weight or the preset height;

s5, the front chute is swung downwards until the material falls on the next blanking point, and the step s4 is repeated until the material in the front chute falls on the last blanking point of the carriage;

s6, front-rear compartment transition:

when the blanking amount of the front carriage is about to reach the preset weight, the sliding chute driving mechanism drives the rear sliding chute to swing until the rear sliding chute swings to the first blanking point of the rear carriage, and the falling materials in the sliding chute can fall;

the control unit controls the action of the turnover plate driving mechanism to drive the turnover plate to swing, and the upper end of the turnover plate swings forwards;

the belt conveyor continuously conveys materials to enter a machine head blanking hopper, then the materials are shunted to a rear chute under the action of a turning plate and then fall to a first blanking point of a rear carriage, a roller driving mechanism is started at the same time, a material stirring roller is driven to rotate, a part of the materials falling from the turning plate are stirred to a front chute, the front chute and the rear chute both blank at the moment, the roller driving mechanism is subjected to frequency conversion control through a control unit, the rotating speed of the material stirring roller is automatically adjusted along with the approach of the loading amount of a front carriage, so that the feeding amount is accurately controlled until the weight of the front carriage reaches a preset weight, and the roller driving mechanism stops working;

the carriage moves forward, the front chute and the rear chute are all swung downwards, the material of the rear chute falls on the first blanking point of the rear carriage, the upper end of the turning plate swings backwards until the front chute swings to the point that the material can fall on the first blanking point of the rear carriage, the material is shunted to the front chute under the action of the turning plate and then falls on the first blanking point of the rear carriage;

s7, repeating the steps s4-s6 until the blanking position is at the last blanking point of the last compartment, and when the step s5 is finished, not performing the step s6, but controlling the belt conveyor to reduce the running speed until the last compartment is charged to reach the preset weight, stopping running the belt conveyor, and then swinging up and retracting front and back chute grooves to finish the charging work of the whole train of compartments.

The method has the advantages that accurate charging can be achieved by blanking, meanwhile, in the charging process, when the front vehicle and the rear vehicle are in transition, the belt conveyor always runs normally, charging can be continuously carried out through the cooperation of the front chute and the rear chute, and efficient charging is achieved.

The invention has the advantages that:

1. when the accurate blanking device is actually applied, the control unit controls the turning plate driving mechanism to act to drive the turning plate to swing, and the upper end of the turning plate swings backwards; dividing a plurality of virtual blanking points in each carriage according to the front-back direction, and driving a front sliding chute by a sliding chute driving mechanism to swing until the front sliding chute swings to the first blanking point of the carriage, wherein the falling materials in the sliding chute can fall; starting the belt conveyor, conveying materials by the belt conveyor to enter a machine head blanking hopper, then shunting to a front chute under the action of a turning plate, and then dropping to a first blanking point of a carriage; the carriage moves forward, and the front chute is swung upwards to ensure that the materials of the front chute continuously fall on the corresponding blanking point until the material pile of the blanking point reaches the preset weight or the preset height; the front chute is swung downwards until the material falls on the next blanking point, and the step s4 is repeated until the material in the front chute falls on the last blanking point of the carriage; when the blanking amount of the front carriage is about to reach the preset weight, the sliding chute driving mechanism drives the rear sliding chute to swing until the rear sliding chute swings to the first blanking point of the rear carriage, and the falling materials in the sliding chute can fall; the control unit controls the action of the turnover plate driving mechanism to drive the turnover plate to swing, and the upper end of the turnover plate swings forwards; the belt conveyor continuously conveys materials to enter a machine head blanking hopper, then the materials are shunted to a rear chute under the action of a turning plate and then fall to a first blanking point of a rear carriage, a roller driving mechanism is started at the same time, so that a material stirring roller is driven to rotate, a part of the materials falling from the turning plate are stirred to a front chute, the front chute and the rear chute both blank at the moment, the material stirring roller is subjected to frequency conversion control through a control unit, the rotating speed of the material stirring roller is automatically adjusted along with the approach of the loading amount of a front carriage, so that the feeding amount is accurately controlled until the weight of the front carriage reaches a preset weight, and the roller driving mechanism stops working; the carriage moves forward, the front chute and the rear chute are all swung downwards, the material of the rear chute falls on the first blanking point of the rear carriage, the upper end of the turning plate swings backwards until the front chute swings to the point that the material can fall on the first blanking point of the rear carriage, the material is shunted to the front chute under the action of the turning plate and then falls on the first blanking point of the rear carriage; and repeating the blanking steps until the blanking position is at the last blanking point of the last carriage, controlling the belt conveyor to reduce the running speed until the last carriage reaches a preset weight, stopping running the belt conveyor, and then swinging the front chute and the rear chute upwards to pack up so as to finish the loading work of the whole row of carriages. Through the process, accurate charging can be realized, and simultaneously in the charging process, when the front and rear vehicles are in transition, the belt conveyor always runs normally, and the charging can be continuously carried out through the cooperation of the front and rear chute, so that efficient charging is realized.

2. During the installation, only need with swift current silo lifting to the position that the couple was located, then hang the peg on the couple, can accomplish the installation to the swift current silo, for prior art, need not to install the fixed bolster under the loading storehouse on the girder, also need not align the mounting hole of swift current silo and the mounting hole on the fixed bolster when the installation, then penetrate the axle, steps such as alignment and wear the axle have been saved, can be very convenient install preset position with the swift current silo, during the dismantlement, only need with the swift current silo together with the peg take off from the couple together can, therefore, the installation and removal of whole swift current silo is comparatively convenient, and manpower and materials are saved.

3. According to the demand of feeding, in practical application, the swift current silo can take place the swing, rotates the peg and installs on the swift current silo, can ensure smooth and easy swing of swift current silo.

4. The locking piece can inject the peg in the couple opening to prevent unexpected the coming off, the security is better.

5. When the material flowing device is in practical application, materials from the belt fall to the front end of the material flowing groove and naturally slide down under the action of gravity, when the materials flow, the materials can flow towards the flow equalizing piece, the width of the flow equalizing piece is small in the front and large in the back, and then the flowing materials can be divided, so that the materials can be divided from the middle to two sides, the flowing is uniform and good in mobility, when the flowing materials fall into a carriage below, the accumulated materials can be smooth, the conditions of high middle and low two sides can not be formed, when a follow-up train runs out, the material can be conveniently leveled, the resistance borne by the material leveling device is small, meanwhile, the flow equalizing piece can also break the material blocks with large sizes, the particle size of the materials is more uniform, in addition, when the materials flow, the flow equalizing piece can hook part of sundries, the material filtering effect is achieved, and the quality of the flowing.

6. When the chute blanking, the dust of shedding is more, and the apron can form a relative confined space with the lateral wall of tank bottom and both sides, and then prevents that the dust from outwards shedding to prevent polluting space on every side.

7. The arrangement of the triangular pyramid shape can effectively divide the flow, so that the material flows more uniformly and smoothly.

8. The method has the advantages that accurate charging can be achieved by blanking, meanwhile, in the charging process, when the front vehicle and the rear vehicle are in transition, the belt conveyor always runs normally, charging can be continuously carried out through the cooperation of the front chute and the rear chute, and efficient charging is achieved.

Drawings

FIG. 1 is a schematic diagram of an accurate blanking device in an embodiment of the invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3-4 are schematic diagrams of different viewing angles of the precise blanking device in the embodiment of the invention;

FIG. 5 is a schematic diagram of a precise blanking device (removing a rack and a head blanking hopper) in an embodiment of the present invention;

FIG. 6 is a schematic diagram of an accurate blanking device in an embodiment of the present invention in practical use;

FIG. 7 is a partial enlarged view of B in FIG. 6;

fig. 8 and 10 are partial schematic views of different viewing angles of the precise blanking device in the embodiment of the invention;

FIG. 9 is an enlarged view of a portion C of FIG. 8;

FIG. 11 is an enlarged view of a portion D of FIG. 10;

FIG. 12 is a schematic view of a chute according to an embodiment of the present invention;

FIG. 13 is an enlarged view of a portion E of FIG. 12;

FIGS. 14-16 are schematic diagrams of a hook according to embodiments of the present invention;

FIGS. 17-19 are schematic views of chute configurations in accordance with embodiments of the present invention;

wherein the content of the first and second substances,

a frame-1;

a belt conveyor-2;

a machine head blanking hopper-3;

a turning plate-4, a turning plate rotating shaft-41, a crank-42, a moving rod-43 and a travel switch-44;

a compartment-5;

a flap driving mechanism-6 and a telescopic mechanism-61;

a material-shifting roller-7, a roller-71 and a shifting sheet-72;

a roller driving mechanism-8 and a roller motor-81;

a chute-9, a hook-91, a chute bottom-92, a hanging shaft-93, a side wall-94, a flow equalizing piece-95, a cover plate-96, a first reinforcing rib-97, a second reinforcing rib-98, a bracket-99, a locking piece-911, a notch part-912, a locking threaded hole-913, a bearing seat-921, a material baffle-961 and a cushion pad-962;

a chute driving mechanism-10, a lifting mechanism-101, a pull rope-102, a lifting motor-103 and a lifting roller-104.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The accurate blanking device and the blanking method of the invention are mainly used in the blanking scenes of bulk materials, such as coal, yellow sand, grain, etc., the following embodiments exemplify the blanking, it should be understood that the following embodiments are only one specific implementation manner, and should not be understood as a limitation to the application scene of the invention, and the application of the invention to the blanking scenes of other bulk materials except coal should also be within the protection scope of the invention.

The first embodiment is as follows:

as shown in fig. 1, 5 and 7, the accurate blanking device comprises a frame 1, a belt conveyor 2, a machine head blanking hopper 3, a turning plate 4, a carriage 5, a turning plate driving mechanism 6, a material stirring roller 7, a roller driving mechanism 8, a chute 9, a chute driving mechanism 10 and a control unit.

The control unit in this embodiment adopts a PLC, which is a prior art, and a person skilled in the art can program the PLC according to actual requirements, so as to implement the control function described in this embodiment. The belt conveyor 2, the turning plate driving mechanism 6, the roller driving mechanism 8 and the chute driving mechanism 10 are controlled by a control unit.

As shown in fig. 6 and 7, the main function of the rack 1 is to provide mounting positions for the remaining components, the rack 1 is not limited to a specific shape as long as the components can be mounted and matched as required and corresponding functions are realized, in order to avoid the rack 1 from shielding the components which need to be clearly shown, the shape of the rack 1 in the drawing is not completely drawn, and in this embodiment, the rack 1 refers to a building platform below a coal bunker in a specific application.

As shown in fig. 1, the belt conveyor 2 is arranged on a frame 1, and a coal feeder is arranged below a coal bunker, wherein the coal feeder is a prior art, and coal from the coal feeder falls to the belt conveyor 2.

As shown in fig. 1, a machine head blanking hopper 3 is arranged at one blanking end of the belt conveyor 2; the section of the machine head blanking hopper 3 is rectangular, the upper part of the machine head blanking hopper is provided with an opening, and the lower part of the machine head blanking hopper is respectively forked towards the front lower part and the rear lower part.

3 top opening part of aircraft nose blanking fill sets up the flue gas sensor, and the flue gas sensor is connected to the control unit, when the cylinder of belt feeder 2 skids, with the belt friction, can produce the flue gas, shows to break down, and the flue gas sensor senses the flue gas, and then shuts down through control unit control belt feeder 2, prevents that the accident from worsening.

In addition, the coal falling from the belt conveyor 2 can hit the side wall at the opening of the head blanking hopper 3 due to inertia, and large noise can be generated, and a buffer plate, such as a rubber plate, is installed on the side wall of the opening of the head blanking hopper 3 opposite to the belt conveyor 2 in the embodiment, so that the impact and noise are reduced.

Further, set up the putty sensor in aircraft nose blanking fill 3 openings top, if adopt travel switch or other prior art's sensor, when the coal was because of blockking up when the gathering in aircraft nose blanking fill 3 openings, triggered the putty sensor, and then carried the signal to the control unit, and then through the stop work of control unit control belt feeder 2 to clear up the chute blockage.

As shown in fig. 5, a turning plate 4 is hinged in the machine head blanking hopper 3, a hinge shaft of the turning plate 4 is located at the lower end of the turning plate 4, and the hinge shaft is along the horizontal direction and perpendicular to the moving direction of the carriage 5 below the precise blanking device.

As shown in fig. 5, a flap rotating shaft 41 is fixedly installed at the lower end of the flap 4, the lower end of the flap 4 is welded on the flap rotating shaft 41, the flap rotating shaft 41 is rotatably installed in the head blanking hopper 3, and a crank 42 is arranged on the flap rotating shaft 41; specifically, the lower end of the crank 42 is fixed at the end of the flap rotating shaft 41.

As shown in fig. 1 and 2, the flap driving mechanism 6 includes a telescopic mechanism 61 hinged on the frame 1, the telescopic mechanism 61 is a hydraulic cylinder, a hinge shaft is parallel to the flap rotating shaft 41, and a movable end of the telescopic mechanism 61 is hinged to an upper end of the crank 42.

Furthermore, as shown in fig. 2, a moving rod 43 is disposed at the upper end of the crank 42 toward one side of the head blanking bin 3, a travel switch 44 is disposed at each of the front and rear sides of the moving rod 43, and when the moving rod 43 moves, the travel switches 44 are triggered, so that the swing of the crank 42 is limited between the two travel switches 44, and the swing range of the flap 4 is further limited.

As shown in fig. 5, a material stirring roller 7 is rotatably arranged below the turning plate 4, and the rotation axis of the material stirring roller 7 is parallel to the hinge shaft of the turning plate 4.

As shown in fig. 5, the material shifting roller 7 includes a roller 71, the roller 71 is provided with six shifting pieces 72, the axis of the roller 71 is coplanar with the shifting pieces 72, in this embodiment, the six shifting pieces 72 are uniformly distributed circumferentially, the roller driving mechanism 8 includes a roller motor 81 arranged on the frame 1, the roller motor 81 is controlled by the control unit, and the roller motor 81 drives the material shifting roller 7 to operate through a belt transmission mechanism, a chain transmission mechanism or a gear transmission mechanism.

As shown in fig. 3 and 4, two chute grooves 9 are arranged below the material shifting roller 7 in a swinging manner, the moving direction of the carriage 5 below the precise blanking device is taken as the front, the two chute grooves 9 are arranged in tandem, the swinging axes of the two chute grooves 9 are parallel to the rotation axis of the material shifting roller 7, the swinging axes of the two chute grooves 9 are located at the feeding ends of the two chute grooves 9, the feeding ends of the two chute grooves 9 are located below the material shifting roller 7, and the material shifting device further comprises chute groove driving mechanisms 10 respectively corresponding to the two chute grooves 9.

As shown in fig. 17 to 19, the chute 9 includes a chute bottom 92, a side wall 94, a flow equalizing member 95, a first reinforcing rib 97, a second reinforcing rib 98, and a bracket 99.

As shown in fig. 17, the side walls 94 are disposed on both sides of the groove bottom 92, and the side walls 94 and the groove bottom 92 may be formed integrally, such as integrally cast or bent, or may be separate and combined by welding.

As shown in fig. 19, the height of the side walls 94 at the front blanking is higher than the height of the rear of the side walls 94. The bottom of the groove bottom 92 is provided with a first reinforcing rib 97. The lateral wall 94 outside sets up the second strengthening rib 98, the bottom and the first strengthening rib 97 end connection of second strengthening rib 98, first strengthening rib 97 and first strengthening rib 97 all adopt the angle bar, and first strengthening rib 97 welds the bottom at tank bottom 92, and the flow direction of first strengthening rib 97 perpendicular to coal, and the second strengthening rib 98 welds in the lateral wall 94 outside, and second strengthening rib 98 perpendicular to tank bottom 92, and the lower extreme and the first strengthening rib 97 end welding of second strengthening rib 98, and the both ends of every first strengthening rib 97 correspond a second strengthening rib 98 respectively.

In addition, as shown in fig. 17, in order to enhance the strength between the two side walls 94, a bracket 99 may be installed between the two side walls 94, and the bracket 99 may be made of angle iron, which is installed between the two side walls 94 by welding or bolting.

As shown in fig. 17, a flow equalizing member 95 is disposed in the middle of the surface of the groove bottom 92, and the flow equalizing member 95 is smaller in front and larger in back when the coal flows in the chute, specifically, the flow equalizing member 95 has a width smaller in front and larger in back, and if an angle iron or a bent member formed by bending a strip plate is adopted, the flow equalizing member can be mounted on the surface of the groove bottom 92 by welding, and when the angle iron or the bent member is adopted, the angle iron or the bent member is perpendicular to the groove bottom 92.

Further, as shown in fig. 17, the flow equalizing member 95 is lower in front and higher in back relative to the height of the groove bottom 92, for example, the flow equalizing member 95 may be set in a triangular pyramid shape, the triangular pyramid is installed on the surface of the groove bottom 92 by welding or bolting, one of the triangular pyramids is attached to the surface of the groove bottom 92, and one vertex of the triangular pyramid faces forward.

Alternatively, the two triangular plates may be welded together at one side and then welded to the surface of the bottom 92 at the same time, thereby forming a shape having a width that is smaller at the front and larger at the rear, and a width that is lower at the front and higher at the rear.

As shown in fig. 17, at least 3 flow equalizing members 95 are provided, and the rear flow equalizing members 95 are located on the rear two sides of the front flow equalizing member 95, in this embodiment, the number of the flow equalizing members 95 is 3, the front flow equalizing member 95 is welded in the middle of the surface of the groove bottom 92, and the two rear flow equalizing members 95 are symmetrically distributed on two sides of the center line of the groove bottom 92 and located at the position where the coal flows out after being shunted by the front flow equalizing member 95.

Further, as shown in fig. 18, cover plates 96 are provided on the top of the two side walls 94, the cover plates 96 are a flat plate, and the cover plates 96 are mounted on the top of the two side walls 94 by welding or bolting.

Further, as shown in fig. 19, the rear end of the cover plate 96 extends out of the chute, the rear end of the cover plate 96 is hinged to a baffle plate 961, the hinge shaft is along the horizontal direction and perpendicular to the flowing direction of the coal, the baffle plate 961 naturally droops under the action of gravity, a cushion 962 is arranged on one side of the baffle plate 961 facing the coal, the cushion 962 can be a rubber cushion, a soft cushion or a cotton cushion, or other materials capable of playing a role in buffering and reducing noise, and the cushion 962 can be mounted on the baffle plate 961 by means of bonding, bolting and the like.

As shown in fig. 17-19, when the chute is actually used, when coal flows, the chute can be flushed to the flow equalizing piece 95, because the flow equalizing piece 95 is small in front and large in back, the flowing coal can be further divided, so that the coal can be divided from the middle to two sides, the flowing is uniform and good in fluidity, when the flowing coal falls into a carriage below, the accumulated coal can be smooth, the conditions of high middle and low two sides cannot be formed, when a subsequent train is driven out, the coal can be leveled conveniently, the resistance borne by the leveling device is small, meanwhile, the flow equalizing piece 95 can break coal blocks with large sizes, the coal particle diameters are more uniform, in addition, when the coal flows, the flow equalizing piece 95 can hook part of sundries to play a role in filtering the coal, and the quality of the flowing coal is ensured. The impact is large when the coal from the belt falls onto the chute, the height of the side wall 94 at the front blanking part is set to be higher than that of the rear part of the side wall 94, and the coal can be prevented from being accidentally spilled. When the chute falls into the coal, more dust is thrown, and the cover plate 96, the chute bottom 92 and the side walls 94 on two sides can form a relatively closed space, so that the dust is prevented from being thrown outwards to prevent polluting the surrounding space. In the actual coal dropping process, in order to accurately drop coal to a specific position of a carriage, when the carriage moves, the angle of the chute needs to be adjusted, the rear end of the chute can be lifted or put down, but due to the change of the angle of the chute, the flowing speed of the coal in the chute is different, and the arrangement of the striker plate 961 can ensure that the striker plate 961 vertically hangs down under the condition of the change of the angle of the chute, so that the coal can fall down after rushing to the striker plate 961 when the coal is dropped, the position of throwing cannot be different, and accurate coal dropping is ensured. When the coal flows out from the chute, the coal can impact the stock stop 961 to generate larger noise, and the arrangement of the cushion 962 can effectively buffer and reduce noise. The setting that the piece 95 width that flow equalizes is big end to end can effectively shunt, and it is comparatively even, smooth and easy that the coal flows. When coal falls to the bottom 92 of the tank, the coal flows along the bottom 92 of the tank, the flow equalizing piece 95 is set to be low in the front and high in the back, the coal can be naturally drained, and the flow is smooth. A plurality of setting of piece 95 that flow equalizes can carry out this reposition of redundant personnel to the coal to it is comparatively even when the swift current silo flows out to ensure the coal.

As shown in fig. 8 to 16, each chute 9 is mounted by a corresponding chute quick-mounting and-dismounting structure, which includes a pair of hooks 91 fixedly mounted, a hanging shaft 93 is provided at the feed end of the chute 9, the hanging shaft 93 is hung on the hooks 91, and the hanging shaft 93 is in the horizontal direction. The hanging shaft 93 is rotatably arranged at the feeding end of the chute 9. A locking piece 911 is detachably arranged at the opening of the hook 91 to lock the hanging shaft 93 in the hook 91.

The chute quick assembly and disassembly structure comprises a pair of hooks 91 which are fixedly installed, a hanging shaft 93 is arranged at the front end of the chute 9 after the flowing direction of coal in the chute 9 is taken as the back, the hanging shaft 93 is hung on the hooks 91, and the hanging shaft 93 is in the horizontal direction.

As shown in fig. 8 and 9, the hook 91 is installed on the loading bin, for example, fixed by a bolt, or the hook 91 is installed on the head blanking hopper 3 matched with the loading bin, for example, installed on the head blanking hopper 3 by a bolt or a welding manner.

As shown in fig. 12, the hanging shaft 93 is rotatably mounted at the front end of the chute 9, bearing seats 921 are coaxially arranged on both sides of the front end of the chute 9, and both ends of the hanging shaft 93 are respectively mounted in the bearing seats 921 through bearings.

As shown in fig. 14, a locking member 911 is detachably mounted at the opening of the hook 91 to lock the hanging shaft 93 in the hook 91, and the locking member 911 is mounted at the opening of the hook 91 by bolts.

As shown in fig. 9, a side of the locking member 911 facing the hanging shaft 93 is provided with a notch portion 912 which is matched with the surface of the hanging shaft 93, the hook 91 is provided with two locking screw holes 913, a locking screw is mounted in the locking screw holes 913, and the head of the locking screw is pressed against the surface of the hanging shaft 93.

As shown in fig. 8, 9, 12 and 13, the opening direction of the hook 91 is directed obliquely upward, and the opening thereof is directed to the side away from the rear end of the chute 9.

Further, as shown in fig. 15 and 16, a first end of the locking member 911 is hinged to an opening of the hook 91, and a second end of the locking member 911 is mounted on the hook 91 through a bolt, specifically, an upper end of the locking member 911 is hinged to an opening of the hook 91, a hinge shaft is parallel to the hanging shaft 93, and a lower end of the locking member 911 is mounted on the hook 91 through a bolt.

During the installation, only need with swift current silo 9 lifting to the position that couple 91 was located, then hang peg 93 on couple 91, can accomplish the installation to swift current silo 9, for prior art, need not to install the fixed bolster under the loading storehouse on the girder, also need not align the mounting hole of swift current silo 9 with the mounting hole on the fixed bolster when the installation, then penetrate the axle, alignment and wear steps such as axle have been saved, can be very convenient install predetermined position with swift current silo 9, during the dismantlement, only need with swift current silo 9 with peg 93 together follow couple 91 take off can, consequently, the installation of whole swift current silo 9 is comparatively convenient, and manpower and materials are saved. According to the coal charging demand, in practical application, the chute 9 can swing, and the hanging shaft 93 is rotatably installed on the chute 9, so that the chute 9 can be guaranteed to swing smoothly. The locking piece 911 can limit the hanging shaft 93 in the opening of the hanging hook 91 to prevent accidental falling, and the safety is good. The notch 912 is fitted into the opening of the hook 91 to tightly fix the hanging shaft 93 therein, thereby stably mounting the chute 9. The locking screw can further define a hanging shaft 93 to define it in the hook 91, thereby stably mounting the chute 9.

As shown in fig. 1, the chute driving mechanism 10 includes a lifting mechanism 101 provided on the frame 1, and a movable end of the lifting mechanism 101 is connected to a discharge end of the chute 9 by a rope 102. Specifically, the lifting mechanism 101 comprises a lifting motor 103 and a lifting roller 104 which are arranged on the frame 1, the lifting motor 103 is controlled by a control unit, the lifting motor 103 is driven by a belt transmission mechanism, a chain transmission mechanism and a gear transmission mechanism or a worm gear transmission mechanism drives the lifting roller 104 to rotate, a pulley is arranged at the discharge end of the chute 9, one end of a pull rope 102 is fixed on the frame 1, and the pull rope winds on the lifting roller 104 after bypassing the pulley.

Example two:

the embodiment discloses a blanking method adopting the accurate blanking device in the first embodiment, which comprises the following steps:

the figures are referred to collectively, with emphasis on figures 6 and 7.

s1, controlling the action of the flap driving mechanism 6 through the control unit to drive the flap 4 to swing, and swinging the upper end of the flap 4 backwards;

s2, dividing a plurality of virtual blanking points in each carriage 5 according to the front-back direction, in the embodiment, 8 blanking points are uniformly divided in each carriage 5, the distances between adjacent blanking points are equal, namely, 8 blanking points uniformly divide the carriage 5 into 9 sections, and the chute driving mechanism 10 drives the front chute 9 to swing until the front chute 9 swings to the first blanking point of the carriage 5, where the material falling from the chute 9 can fall;

s3, starting the belt conveyor 2, conveying materials by the belt conveyor 2 to enter a machine head blanking hopper 3, then shunting to a front chute 9 under the action of a turning plate 4, and then falling to a first blanking point of the carriage 5;

s4, the carriage 5 moves forward, the front chute 9 swings upwards, the materials in the front chute 9 are ensured to continuously fall on the corresponding blanking point until the material pile in the blanking point reaches the preset weight or the preset height, the preset weight or the preset height of the material pile can be detected by a track scale and a height detection device in the prior art, and the detection mode is the prior art;

s5, the front chute 9 is swung downwards until the material falls on the next blanking point, and the step s4 is repeated until the material in the front chute 9 falls on the last blanking point of the carriage 5;

s6, front-rear compartment transition:

when the blanking amount of the previous carriage 5 is about to reach the preset weight, for example, when the difference reaches 100kg to reach the preset weight, the specific difference is set according to the actual requirement, and the chute driving mechanism 10 drives the rear chute 9 to swing until the rear chute 9 swings to the first blanking point of the rear carriage 5, where the material falling from the chute 9 can fall;

the control unit controls the turning plate driving mechanism 6 to act to drive the turning plate 4 to swing, and the upper end of the turning plate 4 swings forwards;

the belt conveyor 2 continuously conveys materials to enter a machine head blanking hopper 3, then the materials are shunted to a rear material sliding groove 9 under the action of a turning plate 4 and then fall to a first material falling point of a rear carriage 5, a roller driving mechanism 8 is started at the same time, a material shifting roller 7 is driven to rotate, namely, the top of the material shifting roller 7 rotates forwards, and the materials falling from the turning plate 4 are shifted to a front material sliding groove 9, at the moment, the front material sliding groove and the rear material sliding groove 9 both drop materials, the roller driving mechanism 8 is subjected to frequency conversion control through a control unit, the rotating speed of the material shifting roller 7 is automatically adjusted along with the approach of the loading quantity of a front vehicle, so that the feeding quantity is accurately controlled, and the roller driving mechanism 8 stops working until the weight of the front carriage 5;

the carriage 5 moves forward, the front chute 9 and the rear chute 9 are all swung downwards, the material of the rear chute 9 is ensured to fall on the first blanking point of the rear carriage, when the front chute 9 swings to the point that the material can fall on the first blanking point of the rear carriage, the upper end of the turning plate 4 swings backwards, the material is divided to the front chute 9 under the action of the turning plate 4 and then falls on the first blanking point of the rear carriage 5;

s7, repeating the steps s4-s6 until the blanking position is at the last blanking point of the last carriage 5, and when the step s5 is finished, not performing the step s6, but controlling the belt conveyor 2 to reduce the running speed until the last carriage 5 reaches the preset weight, stopping running the belt conveyor 2, and then swinging up and retracting the front chute 9 and the rear chute 9 to finish the loading work of the whole train of carriages 5.

The working principle is as follows:

when the accurate blanking device is actually applied, the control unit controls the turning plate driving mechanism 6 to act to drive the turning plate 4 to swing, and the upper end of the turning plate 4 swings backwards; a plurality of virtual blanking points are divided in each carriage 5 according to the front-back direction, and the chute driving mechanism 10 drives the front chute 9 to swing until the front chute 9 swings to the first blanking point of the carriage 5 where the coal falling from the chute 9 can fall; starting the belt conveyor 2, conveying coal by the belt conveyor 2 into a machine head blanking hopper 3, then shunting to a front chute 9 under the action of a turning plate 4, and then dropping to a first blanking point of the carriage 5; the carriage 5 moves forward, and the front chute 9 swings upwards to ensure that the coal in the front chute 9 continuously falls on the corresponding blanking point until the coal pile reaches the preset weight or the preset height at the blanking point; the front chute 9 is swung down until the coal falls on the next blanking point, and the step s4 is repeated until the coal in the front chute 9 falls on the last blanking point of the carriage 5; when the coal dropping amount of the previous carriage 5 is about to reach the preset weight, the chute driving mechanism 10 drives the rear chute 9 to swing until the rear chute 9 swings to a first dropping point of the next carriage 5, wherein the coal dropped from the chute 9 can drop; the control unit controls the turning plate driving mechanism 6 to act to drive the turning plate 4 to swing, and the upper end of the turning plate 4 swings forwards; the belt conveyor 2 continuously conveys coal to enter a machine head blanking hopper 3, then the coal is shunted to a rear material sliding groove 9 under the action of a turning plate 4 and then falls to a first blanking point of a rear carriage 5, a roller driving mechanism 8 is started simultaneously, a material shifting roller 7 is driven to rotate, part of the coal falling from the turning plate 4 is shifted to the front material sliding groove 9, the front material sliding groove 9 and the rear material sliding groove 9 all drop coal at the moment, the roller driving mechanism 8 is subjected to frequency conversion control through a control unit, the rotating speed of the material shifting roller 7 is automatically adjusted along with the approach of the loading amount of a front carriage, so that the feeding amount is accurately controlled until the weight of the front carriage 5 reaches a preset weight, and the roller driving mechanism 8 stops working; the carriage 5 moves forward, the front chute 9 and the rear chute 9 are all swung downwards, the coal in the rear chute 9 is ensured to fall at the first blanking point of the rear carriage, the upper end of the turning plate 4 swings backwards until the front chute 9 swings to the point that the coal can fall at the first blanking point of the rear carriage, the coal is divided to the front chute 9 under the action of the turning plate 4 and then falls at the first blanking point of the rear carriage 5; and repeating the coal dropping steps until the coal dropping position is at the last blanking point of the last carriage 5, controlling the belt conveyor 2 to reduce the operation speed until the last carriage 5 reaches the preset weight, stopping operating the belt conveyor 2, and then swinging up and retracting the front and rear chute 9 to finish the coal charging work of the whole row of carriages 5. Through the process, accurate coal charging can be realized, and simultaneously in the coal charging process, when the front and back cars are in transition, the belt conveyor 2 always runs normally, and the coal charging can be continuously carried out through the cooperation of the front and back chute 9, so that high-efficiency coal charging is realized.

During the installation, only need with swift current silo lifting to the position that the couple was located, then hang the peg on the couple, can accomplish the installation to the swift current silo, for prior art, need not to install the fixed bolster under the loading storehouse on the girder, also need not align the mounting hole of swift current silo and the mounting hole on the fixed bolster when the installation, then penetrate the axle, steps such as alignment and wear the axle have been saved, can be very convenient install preset position with the swift current silo, during the dismantlement, only need with the swift current silo together with the peg take off from the couple together can, therefore, the installation and removal of whole swift current silo is comparatively convenient, and manpower and materials are saved. According to the coal charging demand, in practical application, the chute can swing, and the hanging shaft is rotatably installed on the chute, so that the chute can smoothly swing. The locking piece can inject the peg in the couple opening to prevent unexpected the coming off, the security is better. When the coal chute is in practical application, coal from a belt falls to the front end of the coal chute and naturally slides down under the action of gravity, and when the coal flows, the coal can flow towards the flow equalizing piece, the width of the flow equalizing piece is small in the front and large in the back, so that the flowing coal can be divided, the coal is divided from the middle to two sides, the flowing is uniform and good in mobility, when the flowing coal falls into a carriage below, the accumulated coal can be smooth, the conditions of high middle and low two sides can not be formed, when a follow-up train is driven out, the coal can be conveniently leveled, the resistance borne by the leveling device is small, meanwhile, the flow equalizing piece can break coal blocks with large sizes, the coal particle diameter is more uniform, in addition, when the coal flows, the flow equalizing piece can hook part of sundries, the coal filtering effect is achieved, and the quality of the flowing coal is guaranteed. When the chute falls into the coal, more dust is thrown, and the cover plate, the chute bottom and the side walls on two sides can form a relatively closed space, so that the dust is prevented from being thrown outwards, and the surrounding space is prevented from being polluted. The triangular pyramid shape can effectively divide the flow, so that the coal flows more uniformly and smoothly. The coal is dropped by the method, so that accurate coal charging can be realized, meanwhile, in the coal charging process, when the front vehicle and the rear vehicle are in transition, the belt conveyor 2 always runs normally, the coal charging can be continuously carried out through the cooperation of the front chute 9 and the rear chute 9, and further, the efficient coal charging is realized.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides an accurate doffer which characterized in that: the method comprises the following steps:

a belt conveyor (2) arranged on the frame (1);

a machine head blanking hopper (3) is arranged at one blanking end of the belt conveyor (2);

a turning plate (4) is hinged in the machine head blanking hopper (3), a hinged shaft of the turning plate (4) is positioned at the lower end of the turning plate (4), and the hinged shaft is arranged along the horizontal direction and is vertical to the moving direction of the carriage (5) below the accurate blanking device;

a flap drive mechanism (6);

a material stirring roller (7) is rotatably arranged below the turning plate (4), and the rotating axis of the material stirring roller (7) is parallel to the hinged shaft of the turning plate (4);

a drum drive mechanism (8);

two material sliding grooves (9) are arranged below the material shifting roller (7) in a swinging mode, the moving direction of a carriage (5) below the accurate blanking device is taken as the front, the two material sliding grooves (9) are arranged in front of each other, the swinging axes of the two material sliding grooves (9) are parallel to the rotating axis of the material shifting roller (7), the swinging axes of the two material sliding grooves (9) are located at the feeding ends of the two material sliding grooves (9), and the feeding ends of the two material sliding grooves (9) are located below the material shifting roller (7);

a chute driving mechanism (10) corresponding to the two chutes (9);

and the belt conveyor (2), the turning plate driving mechanism (6), the roller driving mechanism (8) and the chute driving mechanism (10) are controlled by the control unit.

2. The accurate blanking device of claim 1, characterized in that: the lower end of the turning plate (4) is fixedly provided with a turning plate rotating shaft (41), the turning plate rotating shaft (41) is rotatably arranged in the machine head blanking hopper (3), and a crank (42) is arranged on the turning plate rotating shaft (41);

the flap driving mechanism (6) comprises a telescopic mechanism (61) which is hinged on the rack (1), a hinged shaft is parallel to the flap rotating shaft (41), and the movable end of the telescopic mechanism (61) is hinged to the crank (42).

3. The accurate blanking device of claim 1, characterized in that: the material stirring roller (7) comprises a roller (71), a stirring sheet (72) is arranged on the roller (71), and the axis of the roller (71) is coplanar with the stirring sheet (72).

4. The accurate blanking device of claim 1, characterized in that: the structure installation is installed through the swift current silo quick assembly disassembly that corresponds in every swift current silo (9), swift current silo quick assembly disassembly structure includes a pair of couple (91) of fixed mounting, and the feed end of swift current silo (9) is provided with peg (93), and peg (93) are hung on couple (91), and peg (93) are along the horizontal direction.

5. The accurate blanking device of claim 4, characterized in that: the hanging shaft (93) is rotatably arranged at the feed end of the chute (9).

6. The accurate blanking device of claim 4, characterized in that: the opening of the hook (91) is detachably provided with a locking piece (911) to lock the hanging shaft (93) in the hook (91).

7. The accurate blanking device of any one of claims 1 to 6, characterized in that: the chute (9) comprises a chute bottom (92) and side walls (94) arranged at two sides of the chute bottom (92);

the middle of the surface of the tank bottom (92) is provided with a flow equalizing piece (95), and the width of the flow equalizing piece (95) is small in the front and large in the rear after the material flows in the chute.

8. The accurate blanking device of claim 7, characterized in that: and cover plates (96) are arranged at the tops of the two side walls (94).

9. The accurate blanking device of claim 7, characterized in that: the flow equalizing piece (95) is in the shape of a triangular pyramid, one triangle in the triangular pyramid is attached to the surface of the groove bottom (92), and one vertex of the triangle faces forwards.

10. A blanking method using the precise blanking device according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:

s1, controlling the action of the flap driving mechanism (6) through the control unit to drive the flap (4) to swing, and swinging the upper end of the flap (4) backwards;

s2, dividing a plurality of virtual blanking points in each carriage (5) according to the front-back direction, and driving a front chute (9) to swing by a chute driving mechanism (10) until the front chute (9) swings to the first blanking point of the carriage (5) where the falling material in the chute (9) can fall;

s3, starting the belt conveyor (2), conveying materials by the belt conveyor (2) to enter a machine head blanking hopper (3), then shunting to a front chute (9) under the action of a turning plate (4), and then dropping to a first blanking point of a carriage (5);

s4, the carriage (5) moves forward, the front chute (9) swings upwards, and the materials in the front chute (9) are ensured to continuously fall on the corresponding blanking point until the material pile at the blanking point reaches the preset weight or the preset height;

s5, the front chute (9) is swung downwards until the material falls on the next blanking point, and the step s4 is repeated until the material in the front chute (9) falls on the last blanking point of the carriage (5);

s6, front-rear compartment transition:

when the blanking amount of the front carriage (5) is about to reach the preset weight, the chute driving mechanism (10) drives the rear chute (9) to swing until the rear chute (9) swings to the first blanking point of the rear carriage (5) where the falling materials in the chute (9) can fall;

the control unit controls the turning plate driving mechanism (6) to act to drive the turning plate (4) to swing, and the upper end of the turning plate (4) swings forwards;

the belt conveyor (2) continuously conveys materials to enter a machine head blanking hopper (3), then the materials are shunted to a rear material sliding groove (9) under the action of a turning plate (4), then the materials fall to a first blanking point of a rear carriage (5), a roller driving mechanism (8) is started simultaneously, a material shifting roller (7) is driven to rotate, and a part of the materials falling from the turning plate (4) are shifted to a front material sliding groove (9), at the moment, the front material sliding groove and the rear material sliding groove (9) are both blanked, the roller driving mechanism (8) is subjected to frequency conversion control through a control unit, the rotating speed of the material shifting roller (7) is automatically adjusted along with the approach of the front vehicle loading amount, so that the feeding amount is accurately controlled, and the roller driving mechanism (8) stops working until the weight of the front carriage (5) reaches a preset weight;

the carriage (5) moves forwards, the front chute (9) and the rear chute (9) are all swung downwards, the material of the rear chute (9) is ensured to fall on the first blanking point of the rear carriage, the upper end of the turning plate (4) swings backwards until the front chute (9) swings to the point that the material can fall on the first blanking point of the rear carriage, the material is divided to the front chute (9) under the action of the turning plate (4), and then falls on the first blanking point of the rear carriage (5);

s7, repeating the steps s4-s6 until the blanking position is at the last blanking point of the last compartment (5), and when the step s5 is finished, not performing the step s6, but controlling the belt conveyor (2) to reduce the running speed until the last compartment (5) is charged to reach the preset weight, stopping running the belt conveyor (2), and then swinging up and retracting front and rear chute grooves (9) to finish the charging work of the whole train of compartments (5).

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