CN111497026B - Concrete production system - Google Patents

Abstract

The invention provides a concrete production system, and belongs to the technical field of buildings. This system includes one section conveyer belt, the two-stage process conveyer belt, connect material feed divider, unloading mechanism and mixer weigh, the end of two-stage process conveyer belt is located the top that connects the feed cylinder, divide the hopper to rotate and connect the lower extreme at connecing the feed cylinder, the casing of first step motor is fixed on connecing the feed cylinder, the discharge end of dividing the hopper is to the skew side slope who connects the feed cylinder axis, divide and have the transmission ring gear on the hopper, fixed being provided with on the output shaft of first step motor with the drive gear of transmission ring gear meshing, a plurality of chambeies of keeping in have in the partial shipment jar, divide the hopper to make the discharge end alternative of hopper be located the top in each chamber of keeping in through the rotation, unloading mechanism weighs includes the suspension type weighing device of a plurality of and chamber one-to-one, suspension type weighing device. The invention has the advantages of small occupied area and the like.

Description

Concrete production system

Technical Field

The invention belongs to the technical field of buildings, and relates to a concrete production system.

Background

The concrete is a building material formed by stirring and mixing various aggregates, additives and other materials, and in order to reduce transportation procedures and improve efficiency, various materials are generally required to be conveyed to a specified height or a specified position and then mixed, and because the concrete relates to the conveying of various aggregates with different specifications and types, the cost and the management difficulty are greatly improved if a plurality of conveying lines are adopted; the principle of the zero waiting of mixer, need all carry each aggregate to the assigned position and store, then carry out the weight to it and mix to the mixer in batches, this just needs the transport line endless to carry respectively different aggregates, carry respectively that the tensioning requirement to the conveyer belt is higher, this is because the transportation volume of different aggregates in the unit length on same conveyer belt is different, and its density has great difference, conveyer belt rate of tension has different requirements when leading to transporting different materials, carry respectively that the aggregate keeps in the transfer of material, divide the material, weigh etc. and all have corresponding requirement, though can increase the degree of difficulty like this, but, if the transport distance is far away, adopt many transfer lines again, can improve the cost and the place area occupied of transfer line greatly.

Disclosure of Invention

The present invention is directed to a concrete production system, and the technical problem to be solved by the present invention is how to reduce the space occupied by the system.

The purpose of the invention can be realized by the following technical scheme: a concrete production system is characterized by comprising one section of conveying belt, two sections of conveying belts, a material receiving and distributing device, a weighing and discharging mechanism and a stirring machine, wherein the head end of the one section of conveying belt is fed, the head end of the two sections of conveying belts is connected with the tail end of the one section of conveying belt, the material receiving and distributing device comprises a material receiving cylinder, a split charging tank, a material distributing hopper and a first stepping motor, the tail end of the two sections of conveying belts is positioned above the material receiving cylinder, the material distributing hopper is rotatably connected to the lower end of the material receiving cylinder, a shell of the first stepping motor is fixed on the material receiving cylinder, the discharge end of the material distributing hopper inclines to one side deviated from the axis of the material receiving cylinder, a transmission gear ring is arranged on the material distributing hopper, a driving gear meshed with the transmission gear ring is fixedly arranged on an output shaft of the first stepping motor, a plurality of temporary storage cavities are arranged in the material distributing tank, the unloading mechanism of weighing includes the suspension type weighing device of a plurality of and chamber one-to-one that keeps in, the suspension type weighing device can be according to the volume and will correspond the material of the intracavity of keeping in and send into the agitator.

In the concrete production system, the suspension type weighing device comprises a support fixed on the ground, a conical blanking hopper connected with an outlet corresponding to the lower part of the temporary storage cavity, a stop door capable of sealing the blanking hopper, and a suspension cylinder positioned between the support and the blanking hopper, wherein a plurality of guide posts are fixedly arranged on the lower surface of the stop door, guide holes corresponding to the guide posts are formed in the blanking hopper, the guide posts are inserted in the guide holes, a transversely-arranged through groove is formed in the stop door, a slide bar is inserted in the through groove, a connecting rod assembly is respectively connected between the two ends of the slide bar and the suspension cylinder, the connecting rod assembly comprises a first connecting plate which is fixedly connected with the end part of the slide bar and is vertical to the slide bar, a second connecting plate parallel to the slide bar is fixedly connected on the first connecting plate, and the second connecting plate is in a cylindrical shape, the second connecting plate is rotatably connected to the side wall of the blanking hopper, the second connecting plate is fixedly connected with a third connecting plate which is perpendicular to the second connecting plate and forms an inclination angle of 50-70 degrees with the first connecting plate, the third connecting plate is rotatably connected with a fourth connecting plate, and the fourth connecting plate is rotatably connected to the outer wall of the suspension cylinder; and a return spring in a stretching state is connected between the lower end of the suspension cylinder and the support.

The temporary storage cavity is formed by a plurality of partition plates uniformly distributed in the split charging tank in a separating mode, generally four or six partition plates are used as the best partition plates, other structures matched with the temporary storage cavity are enabled to have larger spacing distances, mutual interference is avoided, and the rotating axes of the third connecting plate and the fourth connecting plate are parallel to the rotating axis of the fourth connecting plate.

In the concrete production system, the electromagnetic valve is arranged between the support and the suspension cylinder, and the electromagnetic valve can overcome the restoring force of the return spring to fix the suspension cylinder on the support.

In the concrete production system, a control valve is arranged in the suspension cylinder.

The first section of the conveying belt is a feeding filler conveying belt which is vertical to the second section of the conveying belt, the second section of the conveying belt is a conveying belt for lifting and changing the material feeding position, the first section of the conveying belt is short and wide, the second section of the conveying belt is longer, and the longitudinal fall is larger. Aggregate such as stones and sand grains for preparing concrete has higher density, the scheme needs to aim at different aggregates, so that the opening and closing of a temporary storage cavity matched with weighing are difficult to realize, an electromagnetic valve is a magnetic control structure for realizing connection and separation by strong electromagnetic adsorption force, and an iron block matched with the electromagnetic valve can be adsorbed by electrifying an electrifying coil wound on an armature; because the longitudinal movement space of the suspension cylinder is small, a guide structure can be arranged between the suspension cylinder and the support, or not arranged; the control valve is a manual or passive switch structure capable of closing and opening the outlet of the suspension cylinder.

In this scheme, connect a suspension section of thick bamboo and lower hopper through two link assembly, its working process as follows: when aggregate in a corresponding temporary storage cavity is required to be fed into the stirrer, a control valve of a corresponding suspension cylinder is closed, an electromagnetic valve corresponding to the temporary storage cavity is disconnected, a support and the suspension cylinder are only connected by a return spring, the return force of the return spring drives the suspension cylinder to move upwards, a third connecting plate and a fourth connecting plate are pushed to swing, a second connecting plate which can only rotate rotates, a slide rod is enabled to longitudinally displace relative to the second connecting plate, the slide rod pushes a baffle door to move upwards in a through groove, the baffle door is enabled to move upwards under the longitudinal guiding action of a guide column, a channel allowing the aggregate to fall off from a lower hopper is formed between the side wall of the lower hopper and the outer edge of the baffle door, the material from the lower hopper enters the suspension cylinder, the aggregate gradually enters the suspension cylinder at the moment until the reset spring is pressed by the load of the baffle door until the lower hopper is closed, the electromagnetic valve is opened, the control valve is opened when the aggregate is added to the stirring machine, the pretightening force of the reset spring is controlled, the control of the symmetrical weight can be realized by adjusting the longitudinal position in the support, the weighing, waiting, discharging and the like of different aggregates are realized repeatedly, the structure is simple, the discharging channel can be continuously changed in the process of longitudinal movement of the baffle door, the actions of coarse discharging, fine discharging, closing, opening and the like of the aggregates are realized, and the blockage and the blocking of the baffle door can not be caused.

In the concrete production system, the two-section conveying belt comprises a belt, two driving rollers for pulling the belt and a plurality of supporting brackets for supporting the belt, the supporting brackets are positioned between the two driving rollers, the supporting brackets are connected with the ground through upright posts, at least one cleaning device for cleaning the belt is arranged between the two driving rollers, at least one tensioning device for tensioning the belt is arranged between the two driving rollers, and one driving roller is driven by a driving motor; the transmission roller comprises a roller body with the middle diameter smaller than the diameters of two sides, the peripheral surface of the roller body is a curved surface, a transmission shaft is fixedly arranged at the axis of the roller body, the transmission shaft is rotatably connected onto a mounting frame, a plurality of deviation rectifying units are uniformly arranged on the roller body in the circumferential direction, each deviation rectifying unit comprises a sliding hole formed in the roller body, the middle part of each sliding hole penetrates through the peripheral surface of the middle part of the roller body, a deviation rectifying shaft is connected in each sliding hole in a sliding mode, the middle part of each deviation rectifying shaft is rotatably connected with a deviation rectifying roller, the middle part of each deviation rectifying roller can be in contact with a belt pulled on the transmission roller, two ends of each deviation rectifying shaft are respectively and fixedly provided with a trigger ball, two ends of each deviation rectifying roller are respectively provided with a return spring sleeved on the corresponding deviation rectifying shaft, and two; the fixed branch that is located the transmission shaft below that is provided with on the mounting bracket, it is connected with two trigger cylinder to rotate on the branch, trigger cylinder can support with the limit portion of belt when the belt off tracking and lean on, the last fixed sectorial flywheel that is provided with of trigger cylinder, the flywheel can extrude the trigger ball rather than the homonymy when trigger cylinder is rotatory.

In the concrete production system, a plurality of convex ribs coaxial with the deviation rectifying roller are uniformly distributed on the deviation rectifying roller.

Among the prior art, need realize through comparatively complicated electric elements to rectifying of belt, and among the concrete raw materials transportation process, its environment is comparatively abominable, and the structure of rectifying generally sets up in the middle part of belt, is in the high-order, is unfavorable for maintenance and monitoring.

In the scheme, the deviation rectifying and deviation preventing device arranged at the transmission roller is adopted, the structure is simple and reliable, and electronic devices and human interference are not needed; the principle is as follows: when the belt is in the state of being placed in the middle, two edges of the belt do not contact with two trigger rollers, the deviation rectifying roller does not move in the axis direction, the running state of the belt is not interfered, when the belt deviates, the edge of the belt on one side deviates extrudes the trigger roller corresponding to the deviation rectifying roller, so that the trigger roller rotates, namely the flywheel rotates, the flywheel impacts the trigger ball, so that the deviation rectifying roller moves towards the other side, the moving process is performed intermittently, on one hand, a return spring returns the deviation rectifying roller when the deviation rectifying roller rotates to the state of not contacting with the belt, on the other hand, the trigger ball is impacted to be performed intermittently, so that the deviation rectifying roller interferes with the belt, the belt is pushed to be gradually centered, the trigger roller is not extruded by the belt, so that the automatic deviation rectifying of the belt can be realized, and.

The rotation of the deviation rectifying roller in the rotating process and the trigger roller when contacting with the belt can not cause larger resistance to the running of the belt, so that the normal running of the belt can not be influenced, and when the deviation rectifying roller moves in the axis direction to rectify the belt, the convex ribs on the surface of the deviation rectifying roller can increase the friction force with the belt, so that the belt is in point motion to be centered.

In the concrete production system, the tensioning device comprises a support frame, a second stepping motor, two compression rollers and a control shaft which is rotatably connected to the support frame, the two compression rollers are rotatably connected to the support frame, the control shaft is positioned between the two compression rollers, one end of the control shaft is connected with an output shaft of the second stepping motor, a plurality of tensioning arms are fixedly arranged on the control shaft, included angles are formed between adjacent tensioning arms, the outer ends of the tensioning arms are rotatably connected with one tensioning roller, and the distances between the tensioning rollers and the control shaft are different; the unloaded portion of the belt is conveyed above the two pressure rollers and below one of the tension rollers.

Because the different materials need be carried to the second conveyer belt in this scheme, under the condition that the volume of transporting is the same, the aggregate of different density is different to supporting the pressure that the position that is in unsettled belt between the support caused, it is different to cause the degree of lax of belt, the transport of different aggregates needs different tensile forces in order to ensure that belt tension is moderate, the tension structure under the effect of current spring, though have simple structure's characteristics, but can influence the pretightning force of spring under the different circumstances of bearing of belt, thereby make the tensioning degree of belt change, be unfavorable for multiple material to switch the belt of carrying.

The tensioning device can enable the tensioning roller at the outer end of the tensioning arm with proper length to be pressed on the lower side surface of the belt through the rotation of the driving control shaft of the second stepping motor when the belt conveys different aggregates, the tensioning arm forms an acute angle with the horizontal plane and inclines towards the conveying direction of the belt, the output shaft of the second stepping motor is provided with a torque sensor, the torque sensor detects the torque of the output shaft, when the torque is smaller than a set value, the second stepping motor acts and stops conveying and locks until the torque reaches the set torque, it needs to be explained that the stepping motor has a locking function, the torque sensor is an existing means, the detection data of the torque sensor is only used as the basis for starting and stopping the second stepping motor, the related unit of the torque sensor and the second stepping motor is a controller, and the controller compares the data of the torque sensor with the set data, the comparison result is converted into a control signal to control the second stepper motor power circuit, which is well known to those skilled in the art. By the adaptive action of the stepper motor, it is possible to ensure that the belt is under a relatively constant tension.

In foretell concrete production system, belt cleaning device includes a washing box, washing chamber and disengagement chamber have in the washing box, it is connected with first follower and the second follower that is located washing chamber top to rotate on the washing box, first follower and second follower are located the upper and lower both sides of the unloaded section of belt respectively, it still rotates and is connected with a washing roller to wash the intracavity, it is connected with two disengagement rollers that are located the disengagement chamber to rotate in the washing box, it has a soft traction area to pull between two disengagement rollers, a plurality of scraper blades of the lateral surface equipartition of soft traction area, the scraper blade is network structure, the disengagement chamber is located one side of washing chamber, the bottom of washing chamber communicates with each other with the bottom of disengagement chamber, be less than 30 inclination between the straight section of soft traction area and the horizontal plane, the one end of washing roller, One end of the first driven wheel and one end of one of the separating rollers are fixedly provided with belt wheels, the three belt wheels are positioned on the same side wall of the cleaning box, and the three belt wheels are connected through a transmission belt; a plurality of spray heads are arranged in the cleaning cavity, the spray heads are connected in parallel and then connected with a water receiving pipe, and the belt is contacted with the cleaning roller after being cleaned by water of the spray heads.

In the concrete production system, the cleaning roller is provided with bristles, the first driven wheel and the second driven wheel are both fixedly provided with a synchronous gear, and the two synchronous gears are meshed with each other.

The arrangement of the first driven wheel and the second driven wheel ensures that the first driven wheel or the second driven wheel can be driven to rotate by the operation of the belt, the diameters of the two synchronous gears are the same, so that the transmission belt can be driven to operate by the rotation of the first driven wheel or the second driven wheel by the belt, and just enables the cleaning rollers to rotate reversely relative to the belt, the scraper below the axis between the two separation rollers moves in a low position to a high position, the bottom of the cleaning cavity is communicated with the bottom of the separation cavity, the mixture in the cleaning cavity can only flow into the lower part of the soft traction belt close to the bottom of the separation cavity, the scraper drives the solid material to an outlet at the high position of the cleaning box, the water flow flows to an outlet at the low position of the cleaning box, the two outlets are respectively provided with a material receiving container, water and solid materials are respectively contained so as to be reused, and potential safety hazards caused by falling particles from high altitude and disorder caused to an operation area are eliminated; the nozzles are connected in parallel and then connected with a water receiving pipe, and the water saving pipe is connected with a water pump. The setting of belt cleaning device is not only for the aggregate change with the improvement precision usefulness of weighing, and the key is to avoid causing in the aggregate embedding drive disk assembly to block up and the card is dead, reduces the wearing and tearing to each part.

In the concrete production system, the support brackets are connected with the ground through the upright posts, and the cleaning box, the support frame, the material receiving barrel and the subpackaging tank are fixedly connected with the upright posts.

Other parts connected with the ground can also be indirectly connected with the ground through the upright posts, and the aggregate entering the stirring machine is mixed with a water reducing agent, a reinforcing agent and the like to prepare a concrete pouring mixture.

Drawings

Fig. 1 is a schematic layout of the units in a concrete production system.

Fig. 2 is a schematic structural view of a two-stage conveyor belt.

Fig. 3 is a sectional view in the direction of a-a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Fig. 5 is a schematic view of the structure of the belt tensioner.

Fig. 6 is a schematic view of the structure of the belt cleaning apparatus.

Fig. 7 is a sectional view in the direction C-C in fig. 6.

Fig. 8 is a sectional view in the direction D-D in fig. 7.

Fig. 9 is a schematic structural view of an aggregate distribution system.

Fig. 10 is a schematic view of the structure of a suspended weighing device.

Fig. 11 is an exploded view of a suspended weighing apparatus.

Fig. 12 is a top view of the dispensing can.

In the figure, 1, a section of the conveying belt; 2. a second section of conveyor belt; 21. a belt; 22. a driving roller; 23. a support bracket; 24. a cleaning device; 241. cleaning the box; 242. a cleaning chamber; 243. a separation chamber; 244. a first driven wheel; 245. a second driven wheel; 246. cleaning the roller; 247. a separation roller; 2471. a soft traction belt; 2472. a squeegee; 2473. a pulley; 248. a transmission belt; 249. a spray head; 25. a tensioning device; 251. a support frame; 252. a pressure roller; 253. a control shaft; 254. a tensioning arm; 255. a tension roller; 3. a material receiving and distributing device; 31. a material receiving barrel; 32. subpackaging into cans; 33. a distributing hopper; 34. a first stepper motor; 35. a temporary storage cavity; 4. a weighing and blanking mechanism; 41. a support; 42. feeding a hopper; 43. a shutter; 44. a suspension cylinder; 441. a control valve; 45. a guide post; 46. a through groove; 471. a slide bar; 472. a first connecting plate; 473. a second connecting plate; 474. a third connecting plate; 475. a fourth connecting plate; 48. a return spring; 49. an electromagnetic valve; 51. a roller body; 52. a drive shaft; 53. a mounting frame; 54. an axis of rectification; 55. a deviation rectifying roller; 551. a rib is protruded; 56. a trigger ball; 57. a return spring; 58. triggering the roller; 59. a flywheel; 6. a blender.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 9, the system comprises a first section of conveying belt 1, a second section of conveying belt 2, a material receiving and distributing device 3, a weighing and blanking mechanism 4 and a stirrer 6, wherein the first end of the first section of conveying belt 1 is used for feeding materials, the first end of the second section of conveying belt 2 is used for receiving the tail end of the first section of conveying belt, the material receiving and distributing device 3 comprises a material receiving barrel 31, a sub-packaging tank 32, a material distributing hopper 33 and a first stepping motor 34, the tail end of the second section of conveying belt 2 is positioned above the material receiving barrel 31, the material distributing hopper 33 is rotatably connected to the lower end of the material receiving barrel 31, a shell of the first stepping motor 34 is fixed on the material receiving barrel 31, the discharge end of the material distributing hopper 33 inclines to one side deviating from the axis of the material receiving barrel 31, a transmission gear ring is arranged on the material distributing hopper 33, a driving gear meshed with the transmission gear ring is fixedly arranged on an output shaft of, the unloading mechanism 4 of weighing includes the suspension type weighing device of a plurality of and the chamber 35 one-to-one that keeps in, and the suspension type weighing device can be according to the volume will correspond and keep in the material in the chamber 35 and send into in the mixer 6.

As shown in fig. 1, 9, 10, 11 and 12, the suspension type weighing apparatus includes a support 41 fixed on the ground, a tapered lower hopper 42 connected to an outlet below the temporary storage chamber 35, a door 43 capable of closing the lower hopper 42, and a suspension cylinder 44 located between the support 41 and the lower hopper 42, wherein a plurality of guide posts 45 are fixedly disposed on a lower surface of the door 43, guide holes corresponding to the guide posts 45 are formed on the lower hopper 42, the guide posts 45 are inserted into the guide holes, a through groove 46 is transversely formed in the door 43, a slide rod 471 is inserted into the through groove 46, two ends of the slide rod 471 are respectively connected to the suspension cylinder 44, the rod assembly includes a first connecting rod assembly 472 fixedly connected to an end of the slide rod 471 and perpendicular to the slide rod 471, a second connecting plate 473 parallel to the slide rod 471 is fixedly connected to the first connecting plate 472, the second connecting plate 473 is in a cylindrical shape, the second connecting plate 473 is rotatably connected to the side wall of the lower hopper 42, the second connecting plate 473 is fixedly connected with a third connecting plate 474 which is perpendicular to the second connecting plate 473 and forms an inclination angle of 50-70 degrees with the first connecting plate 472, a fourth connecting plate 475 is rotatably connected to the third connecting plate 474, and the fourth connecting plate 475 is rotatably connected to the outer wall of the hanging cylinder 44; a return spring 48 is connected between the lower end of the suspension cylinder 44 and the support 41 in a stretched state.

The temporary storage chamber 35 is formed by a plurality of partition plates uniformly distributed in the dispensing container 32, preferably four or six partition plates, so that other structures matched with the temporary storage chamber have larger spacing distance to avoid mutual interference, and the rotation axes of the third connecting plate 474 and the fourth connecting plate 475 are parallel to the rotation axis of the fourth connecting plate 475.

Between the support 41 and the suspension cylinder 44, a solenoid valve 49 is provided, the solenoid valve 49 being capable of fixing the suspension cylinder 44 to the support 41 against the restoring force of the return spring 48. A control valve 441 is disposed within the hanging cartridge 44.

The first section of the conveying belt 1 is a feeding filler conveying belt and is vertical to the second section of the conveying belt 2, the second section of the conveying belt 2 is a conveying belt for lifting and changing the material feeding position, the first section of the conveying belt 1 is short and wide, the second section of the conveying belt 2 is longer, and the longitudinal fall is larger. Aggregate such as stones and sand for preparing concrete has higher density, the scheme needs to aim at different aggregates, so that the opening and closing of the temporary storage cavity 35 matched with weighing are difficult to realize, the electromagnetic valve 49 is a magnetic control structure for realizing connection and separation by strong electromagnetic adsorption force, and the electromagnetic valve is wound on the armature through the electrified coil, so that the iron block matched with the electrified coil can be adsorbed by electrifying the electrified coil; because the longitudinal moving space of the suspension cylinder 44 is small, a guide structure can be arranged between the suspension cylinder 44 and the support 41 or not; the control valve 441 is a manual or passive switch structure capable of closing and opening the outlet of the suspension cylinder 44.

In this scheme, connect a hanging section of thick bamboo 44 and lower hopper 42 through two link assembly, its working process is as follows: when the aggregate in the corresponding temporary storage cavity 35 needs to be fed into the mixer 6, the control valve 441 of the corresponding suspension cylinder 44 is closed, the electromagnetic valve 49 corresponding to the temporary storage cavity 35 is disconnected, the support 41 and the suspension cylinder 44 are only connected by the return spring 48, the return force of the return spring 48 drives the suspension cylinder 44 to move upwards, the third connecting plate 474 and the fourth connecting plate 475 are pushed to swing, the second connecting plate 473 which can only rotate rotates is rotated, the sliding rod 471 is longitudinally displaced relative to the second connecting plate 473, the sliding rod 471 pushes the baffle door 43 to move upwards in the through groove 46, the baffle door 43 is longitudinally guided by the guide column 45 to move upwards, a channel which allows the aggregate to fall off the lower hopper 42 is formed between the side wall of the lower hopper 42 and the outer edge of the baffle door 43, the material coming out of the lower hopper 42 enters the suspension cylinder 44, at the moment, the aggregate gradually enters the suspension cylinder 44 until the weight bearing of the return spring 48 is pressed down until the baffle door 43 closes the lower hopper, the electromagnetic valve 49 is opened to enable the suspension cylinder 44 to be connected with the support 41 in an adsorption mode, the control valve 441 is opened when the aggregate needs to be added to the stirring machine 6, the pretightening force of the return spring 48 is controlled, namely the control of the symmetrical weight can be realized by adjusting the longitudinal position in the support 41, the weighing, the waiting, the discharging and the like of different aggregates can be realized repeatedly, the structure is simple, the discharging channel can be continuously changed in the longitudinal moving process of the baffle 43, the actions of coarse discharging, fine discharging, closing, opening and the like of the aggregate are realized, and the blocking of the baffle 43 cannot be caused.

As shown in fig. 1, 2, 3 and 4, the two-stage conveyor belt 2 includes a belt 21, two driving rollers 22 for pulling the belt 21, and a plurality of supporting brackets 23 for supporting the belt 21, the supporting brackets 23 are located between the two driving rollers 22, the supporting brackets 23 are connected to the ground through upright posts, at least one cleaning device 24 for cleaning the belt 21 is arranged between the two driving rollers, at least one tensioning device 25 for tensioning the belt 21 is arranged between the two driving rollers 22, and one of the driving rollers 22 is driven by a driving motor; the transmission roller 22 comprises a roller body 51 with the diameter of the middle part smaller than the diameters of the two sides, the peripheral surface of the roller body 51 is a curved surface, a transmission shaft 52 is fixedly arranged at the axis of the roller body 51, the transmission shaft 52 is rotatably connected to a mounting frame 53, a plurality of deviation rectifying units are uniformly arranged on the roller body 51 in the circumferential direction, each deviation rectifying unit comprises a sliding hole arranged in the roller body 51, the middle part of each sliding hole penetrates through the peripheral surface of the middle part of the roller body 51, a deviation rectifying shaft 54 is slidably connected in each sliding hole, the middle part of each deviation rectifying shaft 54 is rotatably connected with a deviation rectifying roller 55, the middle part of each deviation rectifying roller 55 can be contacted with a belt 21 pulled on the transmission roller 22, two ends of each deviation rectifying shaft 54 are respectively and fixedly provided with a trigger ball 56, two ends of each deviation rectifying roller 55 are respectively provided with a return spring 57; a supporting rod positioned below the transmission shaft 52 is fixedly arranged on the mounting rack 53, two trigger rollers 58 are rotatably connected to the supporting rod, the trigger rollers 58 can abut against the edge of the belt 21 when the belt 21 deviates, a fan-shaped flywheel 59 is fixedly arranged on the trigger rollers 58, and the flywheel 59 can extrude the trigger ball 56 on the same side of the trigger rollers 58 when the trigger rollers 58 rotate.

The deviation rectifying roller 55 is uniformly provided with a plurality of convex ribs 551 which are coaxial with the deviation rectifying roller 55.

Among the prior art, need realize through comparatively complicated electric elements belt 21's the structure of rectifying, and among the concrete raw materials transportation process, its environment is comparatively abominable, and the structure of rectifying generally sets up in belt 21's middle part, is in the high level, is unfavorable for maintenance and monitoring.

In the scheme, the deviation rectifying and deviation preventing device arranged at the transmission roller 22 is adopted, the structure is simple and reliable, and electronic devices and artificial interference are not needed; the principle is as follows: when the belt 21 is in the center state, the two edges of the belt 21 are not contacted with the two triggering rollers 58, the deviation correcting roller 55 does not move in the axial direction, the running state of the belt 21 is not interfered, when the belt 21 is deviated, the edge of the belt 21 on the deviated side presses the trigger roller 58 corresponding thereto, the trigger roller 58 is rotated, namely, the flywheel 59 rotates, the flywheel 59 impacts the trigger ball 56 to make the deviation rectifying shaft 54 move to the other side, the moving process is carried out intermittently, on one hand, the return spring 57 returns the deviation rectifying roller 55 when the deviation rectifying roller 55 rotates to the state that the deviation rectifying roller is not contacted with the belt 21, on the other hand, the trigger ball 56 is impacted intermittently to make the deviation rectifying roller 55 interfere with the belt 21, the belt 21 is pushed to be centered step by step, and the trigger roller 58 is not extruded by the belt 21, so that the automatic deviation rectifying of the belt 21 can be realized without considering active adjustment and interference.

The rotation of the deviation rectifying roller 55 in the rotation process and the trigger roller 58 when contacting the belt 21 will not cause large resistance to the operation of the belt 21, so that the normal operation of the belt 21 will not be affected, and when the deviation rectifying roller 55 moves in the axial direction to rectify the deviation of the belt 21, the convex rib 551 on the surface can increase the friction force with the belt 21, so that the belt 21 is moved to the right.

As shown in fig. 1 and 5, the tensioning device 25 includes a support frame 251, a second stepping motor, two pressing rollers 252 and a control shaft 253 rotatably connected to the support frame 251, the two pressing rollers 252 are both rotatably connected to the support frame 251, the control shaft 253 is located between the two pressing rollers 252, one end of the control shaft 253 is connected to an output shaft of the second stepping motor, a plurality of tensioning arms 254 are fixedly arranged on the control shaft 253, an included angle is formed between adjacent tensioning arms 254, the outer end of each tensioning arm 254 is rotatably connected to one tensioning roller 255, and the distances between each tensioning roller 255 and the control shaft 253 are different; the unloaded leg of the belt 21 passes over two pinch rollers 252 and under one of the tension rollers 255.

Because the second conveyer belt in this scheme need carry different materials, under the same circumstances of carrying the volume, the aggregate of different density is different to supporting the pressure that the position that is in unsettled belt 21 between the support 23 caused, cause the lax degree of belt 21 different, the transport of different aggregates needs different tensile forces in order to ensure that belt 21 rate of tension is moderate, tensioning structure under the effect of current spring, though have simple structure's characteristics, but can influence the pretightning force of spring under the different circumstances of belt 21's bearing, thereby make belt 21's tensile degree change, be unfavorable for multiple material to switch the belt 21 of carrying.

The tensioning device 25 can make the tensioning roller 255 at the outer end of the tensioning arm 254 with proper length press on the lower side surface of the belt 21 by the rotation of the control shaft 253 driven by the second stepping motor when the belt 21 conveys different aggregates, the tensioning arm 254 forms an acute angle with the horizontal plane and inclines towards the conveying direction of the belt 21, the output shaft of the second stepping motor is provided with a torque sensor which detects the torque of the output shaft, when the torque is smaller than a set value, the second stepping motor acts until the second stepping motor stops and locks when the torque reaches the set torque, wherein, it needs to be explained that the stepping motor has a locking function, the torque sensor is the existing means, the detected data of the torque sensor is used as the basis for starting and stopping the second stepping motor, the related unit relating to the torque sensor and the second stepping motor is a controller which compares the data of the torque sensor with the set data, the comparison result is converted into a control signal to control the second stepper motor power circuit, which is well known to those skilled in the art. By the adaptive action of the stepper motor, it is possible to ensure that the belt 21 is under a relatively constant degree of tension.

As shown in fig. 1, 6, 7 and 8, the cleaning device 24 includes a cleaning box 241, a cleaning chamber 242 and a separation chamber 243 are provided in the cleaning box 241, a first driven wheel 244 and a second driven wheel 245 provided above the cleaning chamber 242 are rotatably connected to the cleaning box 241, the first driven wheel 244 and the second driven wheel 245 are respectively provided at the upper and lower sides of the idle section of the belt 21, a cleaning roller 246 is further rotatably connected to the cleaning chamber 242, two separation rollers 247 provided in the separation chamber 243 are rotatably connected to the cleaning box 241, a soft traction belt 2471 is drawn between the two separation rollers 247, a plurality of scraping plates 2472 are uniformly distributed on the outer side surface of the soft traction belt 2471, the scraping plates 2472 are in a mesh structure, the separation chamber 243 is provided at one side of the cleaning chamber 242, the bottom of the cleaning chamber 242 is communicated with the bottom of the separation chamber 243, an inclination angle smaller than 30 ° is provided between the straight section of the soft traction belt 2471 and the horizontal plane, one end, two ends, one end of the first driven wheel 244 and one end of one of the separation rollers 247 are fixedly provided with a belt wheel 2473, the three belt wheels 2473 are positioned on the same side wall of the cleaning box 241, and the three belt wheels 2473 are connected through a transmission belt 248; a plurality of nozzles 249 are arranged in the cleaning cavity 242, each nozzle 249 is connected in parallel and then connected with a water receiving pipe, and the belt 21 is cleaned by water from each nozzle 249 and then contacted with the cleaning roller 246.

The cleaning roller 246 has bristles thereon, and a synchronizing gear is fixedly disposed on each of the first driven wheel 244 and the second driven wheel 245, and the two synchronizing gears are engaged with each other.

The arrangement of the first driven wheel 244 and the second driven wheel 245 ensures that the first driven wheel 244 or the second driven wheel 245 can be driven to rotate by the operation of the belt 21, the diameters of the two synchronous gears are the same, so that the driving belt 248 can be driven to operate by the rotation of the first driven wheel 244 or the second driven wheel 245 by the belt 21, and just the cleaning rollers 246 can rotate reversely relative to the belt 21, the scraping plate 2472 below the axis between the two separation rollers 247 moves in a low position and a high position, the bottom of the cleaning cavity 242 is communicated with the bottom of the separation cavity 243, the mixture in the cleaning cavity 242 can only flow into the lower part of the soft traction belt 2471 close to the bottom of the separation cavity 243, the scraping plate 2472 drives the solid materials to the outlet at the high position of the cleaning box 241, the water flow to the outlet at the low position of the cleaning box 241, the two outlets are respectively provided with material receiving containers for respectively containing water and solid materials, the device can be reused, and potential safety hazards caused by high-altitude particle dropping and disorder caused to an operation area are eliminated; each nozzle 249 is connected in parallel and then connected with a water receiving pipe, and the water saving pipe is connected with a water pump. The cleaning device 24 is arranged for replacing the aggregates to improve the weighing precision, and is key to prevent the aggregates from being blocked and jammed in the transmission part and reduce the abrasion to each part.

Each support bracket 23 is connected with the ground through a column, and the cleaning box 241, the support bracket 251, the material receiving barrel 31 and the split charging tank 32 are fixedly connected with the column.

Other parts connected with the ground can also be indirectly connected with the ground through the upright posts, and the aggregate entering the stirrer 6 is mixed with a water reducing agent, a reinforcing agent and the like to prepare a concrete pouring mixture.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (9)

1. The production system of the concrete is characterized by comprising a section of conveying belt (1), a section of conveying belt (2), a material receiving and distributing device (3), a weighing and blanking mechanism (4) and a stirring machine (6), wherein the material is fed into the head end of the section of conveying belt (1), the head end of the section of conveying belt (2) is used for bearing the tail end of the section of conveying belt, the material receiving and distributing device (3) comprises a material receiving barrel (31), a material distributing tank (32), a material distributing hopper (33) and a first step motor (34), the tail end of the section of conveying belt (2) is positioned above the material receiving barrel (31), the material distributing hopper (33) is rotatably connected to the lower end of the material receiving barrel (31), a shell of the first step motor (34) is fixed on the material receiving barrel (31), the discharge end of the material distributing hopper (33) inclines to one side deviated from the axis of the material receiving barrel (31), and a transmission gear ring is arranged, a driving gear meshed with a transmission gear ring is fixedly arranged on an output shaft of the first stepping motor (34), a plurality of temporary storage cavities (35) are arranged in the subpackaging tank (32), one discharge end of each material distributing hopper can be selected to be positioned above each temporary storage cavity (35) through rotation of each material distributing hopper (33), each weighing and blanking mechanism (4) comprises a plurality of suspension type weighing devices in one-to-one correspondence with the temporary storage cavities (35), and the suspension type weighing devices can convey materials in the corresponding temporary storage cavities (35) into the stirring machine (6) according to the amount;

the two-section conveying belt (2) comprises a belt (21), two driving rollers (22) for drawing the belt (21) and a plurality of supporting brackets (23) for supporting the belt (21), wherein the supporting brackets (23) are positioned between the two driving rollers (22), the supporting brackets (23) are connected with the ground through upright posts, at least one cleaning device (24) for cleaning the belt (21) is arranged between the two driving rollers, at least one tensioning device (25) for tensioning the belt (21) is arranged between the two driving rollers (22), and one driving roller (22) is driven by a driving motor; the transmission roller (22) comprises a roller body (51) with the diameter of the middle part smaller than the diameter of two sides, the circumferential surface of the roller body (51) is a curved surface, a transmission shaft (52) is fixedly arranged at the axis of the roller body (51), the transmission shaft (52) is rotatably connected onto a mounting frame (53), a plurality of deviation rectifying units are uniformly arranged on the roller body (51) in the circumferential direction and comprise sliding holes formed in the roller body (51), the circumferential surface of the middle part of the roller body (51) is penetrated through the middle part of each sliding hole, a deviation rectifying shaft (54) is slidably connected in each sliding hole, a deviation rectifying roller (55) is rotatably connected to the middle part of each deviation rectifying shaft (54), the middle part of each deviation rectifying roller (55) can be in contact with a belt (21) drawn on the transmission roller (22), trigger balls (56) are fixedly arranged at the two ends of each deviation rectifying shaft (54), and return springs (57) arranged on the deviation rectifying shafts (54) are respectively arranged at the two ends of each deviation rectifying roller, two ends of the return spring (57) are respectively abutted against the trigger ball (56) and the deviation rectifying roller (55); the fixed branch that is provided with one and is located transmission shaft (52) below on mounting bracket (53), it is connected with two trigger cylinder (58) to rotate on the branch, trigger cylinder (58) can support with the limit portion of belt (21) when belt (21) off tracking and lean on, the fixed sectorial flywheel (59) that is provided with on trigger cylinder (58), flywheel (59) can extrude trigger ball (56) with it homonymy when trigger cylinder (58) are rotatory.

2. The concrete production system according to claim 1, wherein the suspended weighing device comprises a support (41) fixed on the ground, a tapered lower hopper (42) connected to an outlet below the corresponding temporary storage chamber (35), a shutter (43) capable of closing the lower hopper (42), and a suspension cylinder (44) located between the support (41) and the lower hopper (42), wherein a plurality of guide posts (45) are fixedly arranged on the lower surface of the shutter (43), guide holes corresponding to the guide posts (45) are formed in the lower hopper (42), the guide posts (45) are inserted into the guide holes, a through groove (46) is transversely formed in the shutter (43), a slide rod (471) is inserted into the through groove (46), and a connecting rod assembly is connected between each of two ends of the slide rod (471) and the suspension cylinder (44), the connecting rod assembly comprises a first connecting plate (472) which is fixedly connected to the end of a sliding rod (471) and perpendicular to the sliding rod (471), a second connecting plate (473) which is parallel to the sliding rod (471) is fixedly connected to the first connecting plate (472), the second connecting plate (473) is cylindrical, the second connecting plate (473) is rotatably connected to the side wall of the blanking hopper (42), a third connecting plate (474) which is perpendicular to the second connecting plate (473) and forms an inclination angle of 50-70 degrees with the first connecting plate (472) is fixedly connected to the second connecting plate (473), a fourth connecting plate (475) is rotatably connected to the third connecting plate (474), and the fourth connecting plate (475) is rotatably connected to the outer wall of the suspension cylinder (44); a return spring (48) under the stretching state is connected between the lower end of the suspension cylinder (44) and the support (41).

3. Concrete production system according to claim 2, characterized in that between said support (41) and the suspension drum (44) there is provided a solenoid valve (49), said solenoid valve (49) being able to fix the suspension drum (44) on the support (41) against the return force of a return spring (48).

4. A concrete production system as claimed in claim 2 or 3, wherein a control valve (441) is provided in said suspension drum (44).

5. A concrete production system as claimed in claim 1, 2 or 3, wherein the deviation correcting drum (55) has a plurality of ribs (551) disposed thereon and coaxial with the deviation correcting drum (55).

6. The concrete production system according to claim 1, 2 or 3, wherein the tensioning device (25) comprises a support frame (251), a second stepping motor, two pressing rollers (252) and a control shaft (253) rotatably connected to the support frame (251), the two pressing rollers (252) are rotatably connected to the support frame (251), the control shaft (253) is located between the two pressing rollers (252), one end of the control shaft (253) is connected to an output shaft of the second stepping motor, a plurality of tensioning arms (254) are fixedly arranged on the control shaft (253), an included angle is formed between every two adjacent tensioning arms (254), a tensioning roller (255) is rotatably connected to the outer end of each tensioning arm (254), and the distances between each tensioning roller (255) and the control shaft (253) are different; the idle strand of the belt (21) is conveyed above the two pressure rollers (252) and below one of the tension rollers (255).

7. The concrete production system according to claim 6, wherein the cleaning device (24) comprises a cleaning box (241), the cleaning box (241) is provided therein with a cleaning cavity (242) and a separating cavity (243), the cleaning box (241) is rotatably connected with a first driven wheel (244) and a second driven wheel (245) which are positioned above the cleaning cavity (242), the first driven wheel (244) and the second driven wheel (245) are respectively positioned at the upper side and the lower side of the idle section of the belt (21), the cleaning cavity (242) is further rotatably connected with a cleaning roller (246), the cleaning box (241) is rotatably connected with two separating rollers (247) which are positioned in the separating cavity (243), a soft traction belt (2471) is pulled between the two separating rollers (247), the outer side surface of the soft traction belt (2471) is uniformly distributed with a plurality of scraping plates (2472), and the scraping plates (2472) are of a net structure, the separation cavity (243) is positioned at one side of the cleaning cavity (242), the bottom of the cleaning cavity (242) is communicated with the bottom of the separation cavity (243), an inclination angle smaller than 30 degrees is formed between the straight section of the soft traction belt (2471) and the horizontal plane, one end of the cleaning roller (246), one end of the first driven wheel (244) and one end of one of the separation rollers (247) are fixedly provided with a belt wheel (2473), the three belt wheels (2473) are positioned on the same side wall of the cleaning box (241), and the three belt wheels (2473) are connected through a transmission belt (248); a plurality of spray heads (249) are arranged in the cleaning cavity (242), each spray head (249) is connected in parallel and then is connected with a water receiving pipe, and the belt (21) is cleaned by water of each spray head (249) and then is contacted with the cleaning roller (246).

8. A concrete production system according to claim 7, wherein the cleaning roller (246) is provided with bristles, and the first driven wheel (244) and the second driven wheel (245) are fixedly provided with a synchronous gear, and the two synchronous gears are meshed with each other.

9. A concrete production system according to claim 7, wherein each support bracket (23) is connected to the ground through a vertical column, and the cleaning box (241), the support frame (251), the material receiving barrel (31) and the dispensing tank (32) are fixedly connected to the vertical column.

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