Sandstone branch conveying device for precast concrete

Abstract

The application discloses a sandstone branch conveying device for precast concrete and relates to the technical field of sandstone transportation. The sandstone branch conveying device comprises a conveying pipeline and a mounting plate, the mounting plate is provided with a control device, the conveying pipeline is fixedly provided with sand conveying pipelines and stone conveying pipelines, the conveying pipeline is provided with a transposition mechanism electrically connected with the control device, the transposition mechanism is used for switching the communication state of the sand conveying pipelines and the stone conveying pipelines with the conveying pipeline, the conveying pipeline is provided with a conveying mechanism used for conveying materials, the conveying pipeline is provided with a driving part used for providing power for the conveying mechanism, and the conveying mechanism is provided with an arch breaking mechanism used for breaking arches. Through the transposition mechanism, the communication state of the sand conveying pipelines and the stone conveying pipelines with the conveying pipeline can be switched by directly switching the position of the transposition arc plate when the materials to be conveyed are switched, the device does not need to be stopped, the switching process of the device does not need to be interrupted, and the conveying efficiency of the device is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of sand and gravel transportation technology, and in particular to a sand and gravel distribution and conveying device for precast concrete. Background Technology

[0002] In the modern construction industry, precast concrete, with its advantages of high efficiency, environmental friendliness, and controllable quality, is widely used in various construction projects and has become an indispensable key material in the construction field. From the main structure of high-rise buildings to the construction of infrastructure such as bridges and roads, precast concrete plays a crucial role, greatly promoting the development and progress of the construction industry. Sand and gravel, as the main raw materials of precast concrete, account for about 60%-80% of the total volume of concrete, playing a key role in the skeleton, filling, and stabilizing volume of concrete.

[0003] In traditional sand and gravel distribution conveying systems, when switching the conveyed material, the entire conveying system must be stopped first. Then, the position of the baffles must be adjusted manually or by cylinder to complete the material conveying path switch before the conveying system is restarted. This shutdown and switching process is not only cumbersome but also time-consuming, typically taking 5-10 minutes, which seriously affects production efficiency. In the precast concrete production process, time is cost, and every shutdown and switching means an interruption in production, leading to delays in subsequent production processes and increasing production time costs. Therefore, improvements are urgently needed. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a sand and gravel diversion and conveying device for precast concrete, which aims to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a precast concrete aggregate conveying device, comprising a conveying pipe and mounting plates fixedly disposed on the conveying pipe, wherein at least two mounting plates are provided, and a control device is provided on any one mounting plate; a sand conveying pipe and an aggregate conveying pipe are fixedly disposed on the conveying pipe, and the sand conveying pipe and the aggregate conveying pipe are symmetrically distributed on the conveying pipe; a first connecting flange for connecting to an external pipe is fixedly disposed at the end of the sand conveying pipe away from the conveying pipe and the end of the aggregate conveying pipe away from the conveying pipe; an arc-shaped transposition groove is provided inside the conveying pipe; an annular limiting groove is provided inside the conveying pipe; a transposition mechanism electrically connected to the control device is provided inside the conveying pipe; the transposition mechanism is used to switch the connection state of the sand conveying pipe and the aggregate conveying pipe with the conveying pipe; a conveying mechanism for conveying materials is provided inside the conveying pipe; a drive unit for providing power to the conveying mechanism is provided on the conveying pipe; and an arch-breaking mechanism for breaking arches is provided on the conveying mechanism.

[0006] Preferably, the driving unit includes: A drive motor is fixedly mounted on the conveying pipeline and electrically connected to the control device; A drive shaft is rotatably mounted on the conveying pipe, with one end of the drive shaft away from the drive motor extending into the conveying pipe, and the other end of the drive shaft near the drive motor being fixedly connected to the output end of the drive motor. A partition is located inside the conveying pipe and is fixedly connected to the conveying pipe, with the axis of the partition coinciding with the axis of the conveying pipe. A drive shaft is rotatably mounted on the partition plate, and one end of the drive shaft near the drive shaft is fixedly connected to the drive shaft.

[0007] Preferably, the transposition mechanism includes: A rotating plate is rotatably disposed inside the conveying pipe, and the outer diameter of the rotating plate is equal to the inner diameter of the conveying pipe. A switching arc plate is fixedly disposed on the rotating plate, and the projected area of ​​the switching arc plate along the axis of the stone conveying pipe is greater than the projected area of ​​the outlet of the stone conveying pipe along the axis of the stone conveying pipe. The switching arc plate is used to switch the connection state between the sand conveying pipe and the stone conveying pipe and the conveying pipe. An arc-shaped slider is slidably disposed in the arc-shaped transposition groove and is fixedly connected to the transposition arc plate; The connecting part is disposed on the surface of the rotating plate away from the transposition arc plate; The power transmission unit has multiple sets, and the multiple sets of power transmission units are evenly distributed on the connecting part.

[0008] Preferably, the connecting portion includes: The rotating plate has multiple connecting rods, which are evenly distributed on the rotating plate and fixedly connected to the rotating plate. A rotating disk is fixedly installed at the end of the connecting rod away from the rotating plate, and an annular limiting block that is slidably connected to the annular limiting groove is fixedly installed on the surface of the rotating disk. A through groove is opened through the middle of the rotating disk, and multiple evenly distributed internal grooves are opened in the through groove.

[0009] Preferably, the power transmission unit includes: An electric push rod is located in the built-in groove and is fixedly connected to the rotating disk. The electric push rod is electrically connected to the control device. A shaft clamp is fixedly mounted on the output end of the electric push rod, and the shaft clamp is used to clamp the drive shaft.

[0010] Preferably, an arc-shaped rod is fixedly installed inside the arc-shaped transposition groove, and the arc-shaped rod is slidably connected to the arc-shaped slider.

[0011] Preferably, the conveying mechanism includes: A conveying shaft is located inside the conveying pipe, and one end of the conveying shaft near the drive shaft is fixedly connected to the drive shaft. A main feeding blade is fixedly installed on the conveying shaft. The sliding groove has multiple grooves, which are evenly distributed on the surface of the conveyor shaft, and a fixing rod is fixedly installed inside the sliding groove.

[0012] Preferably, the arch-breaking mechanism includes: A sliding sleeve is provided on the conveying shaft, and the sliding sleeve always covers the sliding groove when it is in the sliding state; A sliding block is slidably disposed in the sliding groove and fixedly connected to the sliding sleeve; the sliding block is slidably connected to the fixed rod. An internal spring is located in the sliding groove, and two internal springs are provided in the sliding groove. The two internal springs are both sleeved on the fixed rod and symmetrically distributed on both sides of the sliding block. An auxiliary feeding blade is fixedly mounted on the sliding sleeve. The auxiliary feeding blade is used to convey material towards the direction of the main feeding blade. There are two arch-breaking scrapers, which are symmetrically arranged on the sliding sleeve and are fixedly connected to the sliding sleeve.

[0013] Preferably, the inner diameter of the sand delivery pipe and the stone delivery pipe gradually decreases from the end furthest from the conveying pipe to the point where they connect with the conveying pipe.

[0014] Preferably, a second connecting flange is fixedly provided at the discharge end of the conveying pipe.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. By incorporating a switching mechanism, this device can directly switch the connection status between the sand conveying pipe and the stone conveying pipe and the conveying pipe by switching the position of the switching arc plate when switching the materials to be conveyed, without having to stop the device. This ensures that the conveying process can continue without interruption, thereby greatly improving the conveying efficiency of the device.

[0016] 2. This device is equipped with an arch-breaking mechanism, which enables it to scrape off sand arches that have formed on the inner wall of the conveying pipeline. This greatly improves the conveying efficiency of the pipeline when conveying wet sand. At the same time, when the auxiliary feeding blades convey the material towards the main feeding blades, the conveyed material will cause a certain impact on the arch-breaking scraper, causing the arch-breaking scraper to slide back and forth in the axial direction of the conveying pipeline. This further improves the arch-breaking efficiency of the scraper in breaking up the material adhering to the inner wall of the conveying pipeline, thereby further improving the material conveying efficiency of this device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram of a precast concrete aggregate distribution conveying device is shown.

[0019] Figure 2 A front view of a precast concrete aggregate conveying device is shown.

[0020] Figure 3 It shows Figure 2 Sectional view of AA.

[0021] Figure 4 It shows Figure 3 A magnified schematic diagram of the local structure at point A.

[0022] Figure 5 It shows Figure 3 A magnified view of the local structure at point B.

[0023] Figure 6 It shows Figure 2 A cross-sectional view of BB.

[0024] Figure 7 It shows Figure 6 A magnified schematic diagram of the local structure at point C.

[0025] Figure 8 A side view of a precast concrete aggregate distribution conveyor is shown.

[0026] Figure 9 It shows Figure 8 A sectional view of CC.

[0027] Figure 10 A top view of a precast concrete aggregate distribution conveyor is shown.

[0028] Figure 11 A three-dimensional structural diagram of a precast concrete aggregate distribution conveying device is shown from another perspective.

[0029] Figure 12 An exploded view of a portion of the structure of a precast concrete aggregate distribution conveying device is shown.

[0030] Legend: 1. Conveying pipe; 2. Mounting plate; 3. Control device; 4. Sand conveying pipe; 5. Stone conveying pipe; 6. First connecting flange; 7. Arc-shaped transposition groove; 8. Annular limiting groove; 9. Drive motor; 10. Drive shaft; 11. Partition plate; 12. Transmission shaft; 13. Rotating plate; 14. Transposition arc plate; 15. Arc-shaped slider; 16. Connecting rod; 17. Rotating disk; 18. Annular limiting block; 19. Through groove; 20. Internal groove; 21. Electric push rod; 22. Shaft clamp plate; 23. Arc-shaped rod; 24. Conveying shaft; 25. Main feeding blade; 26. Sliding groove; 27. Fixed rod; 28. Sliding sleeve; 29. ​​Sliding block; 30. Internal spring; 31. Auxiliary feeding blade; 32. Arch breaking scraper; 33. Second connecting flange. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] Reference Figures 1 to 12 The following is a further description of an embodiment of the precast concrete aggregate distribution and conveying device of the present invention.

[0036] A precast concrete aggregate conveying device includes a conveying pipe 1 and mounting plates 2 fixedly installed on the conveying pipe 1. At least two mounting plates 2 are provided, and a control device 3 is installed on any one of the mounting plates 2. A sand conveying pipe 4 and an aggregate conveying pipe 5 are fixedly installed on the conveying pipe 1, and the sand conveying pipe 4 and aggregate conveying pipe 5 are symmetrically distributed on the conveying pipe 1. The inner diameter of the sand conveying pipe 4 and aggregate conveying pipe 5 gradually decreases from the end furthest from the conveying pipe 1 to the point of connection with the conveying pipe 1. It should be noted that the initial connection state between the aggregate conveying pipe 5 and the conveying pipe 1 is normally closed. A first connecting flange 6 for connecting to an external pipe is fixedly installed at the end of the sand conveying pipe 4 furthest from the conveying pipe 1 and the end of the aggregate conveying pipe 5 furthest from the conveying pipe 1. A second connecting flange 33 is fixedly installed at the discharge end of the conveying pipe 1. An arc-shaped switching groove 7 is opened inside the conveying pipe 1, and an arc-shaped rod 23 is fixedly installed inside the arc-shaped switching groove 7. It should be noted that the arc-shaped rod 23 is configured to provide a limit for the sliding of the subsequent arc-shaped slider 15 in the arc-shaped switching groove 7, preventing the arc-shaped slider 15 from sliding out of the arc-shaped switching groove 7. The arc-shaped rod 23 is slidably connected to the arc-shaped slider 15. An annular limiting groove 8 is opened inside the conveying pipe 1. A switching mechanism electrically connected to the control device 3 is installed inside the conveying pipe 1. The switching mechanism is used to switch the connection state between the sand conveying pipe 4 and the stone conveying pipe 5 and the conveying pipe 1. A conveying mechanism for conveying materials is installed inside the conveying pipe 1. The conveying mechanism includes: The conveying shaft 24 is located inside the conveying pipe 1, and one end of the conveying shaft 24 near the drive shaft 12 is fixedly connected to the drive shaft 12. The main feeding blade 25 is fixedly installed on the conveying shaft 24. Multiple sliding grooves 26 are provided, and the multiple sliding grooves 26 are evenly opened on the surface of the conveying shaft 24. A fixing rod 27 is fixedly installed in the sliding groove 26.

[0037] When material enters conveying pipe 1 through stone conveying pipe 5 or sand conveying pipe 4, the continuous rotation of the output end of drive motor 9 causes the transmission shaft 12, which is fixedly connected to the output end of drive motor 9, to rotate. This, in turn, drives the conveying shaft 24, which is fixedly connected to the transmission shaft 12, to rotate. Consequently, the fixed rod 27, which is fixedly connected to the conveying shaft 24 and located in sliding groove 26, rotates around the axis of the conveying shaft 24. This causes the sliding block 29, which is fixedly connected to the fixed rod 27, to rotate around the axis of the conveying shaft 24. This, in turn, drives the sliding sleeve 28, which is fixedly connected to the sliding block 29, to rotate. Consequently, the auxiliary feeding blade 31, which is fixedly connected to the sliding sleeve 28, rotates, thus conveying the material that has just entered conveying pipe 1 towards the main feeding blade 25. At the same time, the rotation of conveying shaft 24 also drives the main feeding blade 25, which is fixedly connected to conveying shaft 24, to rotate, thereby conveying the material to the main feeding blade 25 until the material is delivered to the target location.

[0038] The conveying pipe 1 is provided with a drive unit for providing power to the conveying mechanism, the drive unit comprising: The drive motor 9 is fixedly mounted on the conveying pipe 1 and electrically connected to the control device 3; A drive shaft 10 is rotatably mounted on the conveying pipe 1, with one end of the drive shaft 10 away from the drive motor 9 extending into the conveying pipe 1, and the end of the drive shaft 10 close to the drive motor 9 being fixedly connected to the output end of the drive motor 9. A partition 11 is located inside the conveying pipe 1 and is fixedly connected to the conveying pipe 1, and the axis of the partition 11 coincides with the axis of the conveying pipe 1. The drive shaft 12 is rotatably mounted on the partition plate 11, and one end of the drive shaft 12 near the drive shaft 10 is fixedly connected to the drive shaft 10.

[0039] The transposition mechanism includes: A rotating plate 13 is rotatably disposed inside the conveying pipe 1, and the outer diameter of the rotating plate 13 is equal to the inner diameter of the conveying pipe 1. A switching arc plate 14 is fixedly disposed on the rotating plate 13, and the projected area of ​​the switching arc plate 14 along the axis of the stone conveying pipe 5 is greater than the projected area of ​​the outlet of the stone conveying pipe 5 along the axis of the stone conveying pipe 5. The switching arc plate 14 is used to switch the connection state between the sand conveying pipe 4 and the stone conveying pipe 5 and the conveying pipe 1. The arc-shaped slider 15 is slidably disposed in the arc-shaped repositioning groove 7 and is fixedly connected to the repositioning arc plate 14; A connecting portion is disposed on the surface of the rotating plate 13 away from the shifting arc plate 14, the connecting portion comprising: There are multiple connecting rods 16, and the multiple connecting rods 16 are evenly distributed on the rotating plate 13 and fixedly connected to the rotating plate 13; A rotating disk 17 is fixedly disposed at one end of the connecting rod 16 away from the rotating plate 13, and an annular limiting block 18 is fixedly disposed on the surface of the rotating disk 17 and slidably connected to the annular limiting groove 8. A through groove 19 is provided through the middle of the rotating disk 17, and a plurality of evenly distributed internal grooves 20 are provided in the through groove 19.

[0040] A power transmission unit, comprising multiple sets of such units evenly distributed on a connecting portion, wherein the power transmission unit includes: The electric push rod 21 is located in the built-in groove 20 and is fixedly connected to the rotating disk 17. The electric push rod 21 is electrically connected to the control device 3. A shaft clamping plate 22 is fixedly disposed at the output end of the electric push rod 21, and the shaft clamping plate 22 is used to clamp the drive shaft 12.

[0041] When it is necessary to transport crushed stone, the electric push rod 21 is activated by the control device 3, causing the shaft clamp 22, which is fixedly connected to the electric push rod 21, to move towards the surface of the drive shaft 12 until the shaft clamp 22 is in contact with the surface of the drive shaft 12 and applies a certain pressure to the drive shaft 12. Then, the drive motor 9 is activated by the control device 3, causing the drive shaft 10, which is fixedly connected to the output end of the drive motor 9, to rotate. This, in turn, drives the drive shaft 12, which is fixedly connected to the drive shaft 10, to rotate. This causes the shaft clamp 22, which clamps the drive shaft 12, to rotate around the axis of the drive shaft 12. This, in turn, causes the electric push rod 21, which is fixedly connected to the shaft clamp 22, to drive the rotating disk 17 to rotate. This causes the connecting rod 16, which is fixedly connected to the rotating disk 17, to rotate around the axis of the drive shaft 12. This, in turn, drives the rotating disk 17, which is fixedly connected to the connecting rod 16, to rotate. The plate 13 rotates, causing the shifting arc plate 14, which is fixedly connected to the rotating plate 13, to rotate around the axis of the transmission shaft 12. This, in turn, causes the arc-shaped slider 15, which is fixedly mounted on the shifting arc plate 14, to slide within the arc-shaped shifting groove 7 until the arc-shaped slider 15 slides to the other end of the arc-shaped shifting groove 7. At this point, the control device 3 controls the extension and retraction of the electric push rod 21, thereby causing the shaft clamp plate 22, which is fixedly connected to the electric push rod 21, to disengage from the transmission shaft 12. This causes the shifting arc plate 14 to stop rotating around the axis of the transmission shaft 12. At this point, the shifting arc plate 14 also rotates to close the sand delivery pipe 4, thereby cutting off the connection between the sand delivery pipe 4 and the conveying pipe 1. This also switches the closed state of the stone delivery pipe 5 and the conveying pipe 1 to the connected state. Then, the external crushed stone can be transported to the conveying pipe 1 through the stone delivery pipe 5. It should be noted that by setting up a switching mechanism, when switching the materials to be conveyed, this device can directly switch the connection status of the sand conveying pipe 4 and the stone conveying pipe 5 with the conveying pipe 1 by switching the position of the switching arc plate 14, without stopping the device. This allows the device to switch without interrupting the conveying process, thereby greatly improving the conveying efficiency of the device.

[0042] The conveying mechanism is equipped with an arch-breaking mechanism, which includes: The sliding sleeve 28 is disposed on the conveying shaft 24, and the sliding sleeve 28 always covers the sliding groove 26 when it is in the sliding state; The sliding block 29 is slidably disposed in the sliding groove 26 and fixedly connected to the sliding sleeve 28. The sliding block 29 is slidably connected to the fixed rod 27. An internal spring 30 is located within the sliding groove 26, and two internal springs 30 are provided within the sliding groove 26. Both internal springs 30 are sleeved on the fixed rod 27 and symmetrically distributed on both sides of the sliding block 29. It should be noted that the internal springs 30 prevent the sliding sleeve 28 from sliding too much during reciprocating motion, thus avoiding excessive wear of the parts and improving the service life of the device to a certain extent.

[0043] An auxiliary feeding blade 31 is fixedly mounted on the sliding sleeve 28. The auxiliary feeding blade 31 is used to convey materials toward the main feeding blade 25. There are two arch-breaking scrapers 32, and the two arch-breaking scrapers 32 are symmetrically arranged on the sliding sleeve 28, and the arch-breaking scrapers 32 are fixedly connected to the sliding sleeve 28.

[0044] When this device transports wet sand, the wet sand easily adheres to the inner wall of the transport pipe 1. As the transport time increases, the wet sand accumulates more and more on the inner wall of the transport pipe 1, forming sand arches, which greatly hinders the transport efficiency of the wet sand in the transport pipe 1. This device is equipped with an arch-breaking scraper 32, which causes the sliding sleeve 28 to rotate and drive the arch-breaking scraper 32 on the sliding sleeve 28 to rotate around the axis of the transport shaft 24. During the rotation of the arch-breaking scraper 32 around the axis of the transport shaft 24, the sand arches formed on the inner wall of the transport pipe 1 are scraped off, thereby greatly improving the transport efficiency of the transport pipe 1 when transporting wet sand. This device is equipped with an arch-breaking mechanism, which enables it to scrape off sand arches that have formed on the inner wall of the conveying pipe 1, thereby greatly improving the conveying efficiency of the conveying pipe 1 when conveying wet sand. At the same time, when the auxiliary feeding blade 31 conveys the material towards the main feeding blade 25, the conveyed material will cause a certain impact on the arch-breaking scraper 32, causing the arch-breaking scraper 32 to slide back and forth in the axial direction of the conveying pipe 1. This further improves the arch-breaking efficiency of the arch-breaking scraper 32 on the material adhering to the inner wall of the conveying pipe 1, thereby further improving the material conveying efficiency of this device.

[0045] Working principle: When crushed stone needs to be transported, the electric push rod 21 is activated by the control device 3, causing the shaft clamp 22, which is fixedly connected to the electric push rod 21, to move towards the surface of the drive shaft 12 until the shaft clamp 22 is in contact with the surface of the drive shaft 12 and applies a certain pressure to the drive shaft 12. Then, the drive motor 9 is activated by the control device 3, causing the drive shaft 10, which is fixedly connected to the output end of the drive motor 9, to rotate. This, in turn, drives the drive shaft 12, which is fixedly connected to the drive shaft 10, to rotate. This causes the shaft clamp 22, which clamps the drive shaft 12, to rotate around the axis of the drive shaft 12. This, in turn, causes the electric push rod 21, which is fixedly connected to the shaft clamp 22, to drive the rotating disk 17 to rotate. This causes the connecting rod 16, which is fixedly connected to the rotating disk 17, to rotate around the axis of the drive shaft 12. This, in turn, drives the drive shaft 17, which is fixedly connected to the drive shaft 12, to rotate around the axis of the drive shaft 12. The rotating plate 13 rotates, causing the shifting arc plate 14, which is fixedly connected to the rotating plate 13, to rotate around the axis of the transmission shaft 12. This causes the arc-shaped slider 15, which is fixedly mounted on the shifting arc plate 14, to slide in the arc-shaped shifting groove 7 until the arc-shaped slider 15 slides to the other end of the arc-shaped shifting groove 7. At this time, the control device 3 controls the extension and retraction of the electric push rod 21, thereby causing the shaft clamp plate 22, which is fixedly connected to the electric push rod 21, to disengage from the transmission shaft 12. This causes the shifting arc plate 14 to stop rotating around the axis of the transmission shaft 12. At this time, the shifting arc plate 14 also rotates to close the sand delivery pipe 4, thereby cutting off the connection between the sand delivery pipe 4 and the conveying pipe 1. At this time, the closed state of the stone delivery pipe 5 and the conveying pipe 1 is switched to the connected state, and then the external crushed stone can be transported to the conveying pipe 1 through the stone delivery pipe 5. When material enters conveying pipe 1 through stone conveying pipe 5 or sand conveying pipe 4, the continuous rotation of the output end of drive motor 9 causes the transmission shaft 12, which is fixedly connected to the output end of drive motor 9, to rotate. This, in turn, drives the conveying shaft 24, which is fixedly connected to the transmission shaft 12, to rotate. Consequently, the fixed rod 27, which is fixedly connected to the conveying shaft 24 and located in sliding groove 26, rotates around the axis of the conveying shaft 24. This causes the sliding block 29, which is fixedly connected to the fixed rod 27, to rotate around the axis of the conveying shaft 24. This, in turn, drives the sliding sleeve 28, which is fixedly connected to the sliding block 29, to rotate. Consequently, the auxiliary feeding blade 31, which is fixedly connected to the sliding sleeve 28, rotates, thus conveying the material that has just entered conveying pipe 1 towards the main feeding blade 25. At the same time, the rotation of conveying shaft 24 also drives the main feeding blade 25, which is fixedly connected to conveying shaft 24, to rotate, thereby conveying the material to the main feeding blade 25 until the material is delivered to the target location.

[0046] When this device transports wet sand, the wet sand easily adheres to the inner wall of the transport pipe 1. As the transport time increases, the wet sand accumulates more and more on the inner wall of the transport pipe 1, forming sand arches, which greatly hinders the transport efficiency of the wet sand in the transport pipe 1. This device is equipped with an arch-breaking scraper 32, which causes the sliding sleeve 28 to rotate around the axis of the transport shaft 24 when it rotates. During the rotation of the arch-breaking scraper 32 around the axis of the transport shaft 24, the sand arches formed on the inner wall of the transport pipe 1 are scraped off, thereby greatly improving the transport efficiency of the transport pipe 1 when transporting wet sand.

[0047] The above description of the embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precast concrete aggregate conveying device, comprising a conveying pipe (1) and mounting plates (2) fixedly disposed on the conveying pipe (1), wherein at least two mounting plates (2) are provided, and a control device (3) is provided on any one mounting plate (2); a sand conveying pipe (4) and a stone conveying pipe (5) are fixedly disposed on the conveying pipe (1), and the sand conveying pipe (4) and the stone conveying pipe (5) are symmetrically distributed on the conveying pipe (1); a first connecting flange (6) for connecting an external pipe is fixedly disposed at the end of the sand conveying pipe (4) away from the conveying pipe (1) and the end of the stone conveying pipe (5) away from the conveying pipe (1); characterized in that, An arc-shaped switching groove (7) is provided inside the conveying pipe (1), an annular limiting groove (8) is provided inside the conveying pipe (1), a switching mechanism electrically connected to the control device (3) is provided inside the conveying pipe (1), the switching mechanism is used to switch the connection state between the sand conveying pipe (4) and the stone conveying pipe (5) and the conveying pipe (1), a conveying mechanism for conveying materials is provided inside the conveying pipe (1), a drive unit for providing power to the conveying mechanism is provided on the conveying pipe (1), and an arch-breaking mechanism for breaking the arch is provided on the conveying mechanism; The transposition mechanism includes: A rotating plate (13) is rotatably installed inside the conveying pipe (1), and the outer diameter of the rotating plate (13) is equal to the inner diameter of the conveying pipe (1). A shifting arc plate (14) is fixedly installed on the rotating plate (13), and the projected area of ​​the shifting arc plate (14) along the axis of the stone conveying pipe (5) is greater than the projected area of ​​the outlet of the stone conveying pipe (5) along the axis of the stone conveying pipe (5). The shifting arc plate (14) is used to switch the connection state between the sand conveying pipe (4) and the stone conveying pipe (5) and the conveying pipe (1). The arc-shaped slider (15) is slidably disposed in the arc-shaped transposition groove (7) and fixedly connected to the transposition arc plate (14); The connecting part is provided on the surface of the rotating plate (13) away from the shifting arc plate (14); The power transmission unit has multiple sets, and the multiple sets of power transmission units are evenly distributed on the connecting part; The connecting part includes: There are multiple connecting rods (16), and the multiple connecting rods (16) are evenly distributed on the rotating plate (13) and fixedly connected to the rotating plate (13); A rotating disk (17) is fixedly installed at one end of the connecting rod (16) away from the rotating plate (13), and an annular limiting block (18) is fixedly installed on the surface of the rotating disk (17) and is slidably connected to the annular limiting groove (8). A through groove (19) is opened through the middle of the rotating disk (17), and a plurality of evenly distributed internal grooves (20) are opened in the through groove (19). The power transmission unit includes: An electric push rod (21) is located in the built-in groove (20) and is fixedly connected to the rotating disk (17). The electric push rod (21) is electrically connected to the control device (3). A shaft clamp (22) is fixedly installed at the output end of the electric push rod (21), and the shaft clamp (22) is used to clamp the drive shaft (12).

2. The precast concrete aggregate conveying device according to claim 1, characterized in that, The drive unit includes: The drive motor (9) is fixedly installed on the conveying pipe (1) and electrically connected to the control device (3); A drive shaft (10) is rotatably mounted on the conveying pipe (1), and one end of the drive shaft (10) away from the drive motor (9) extends into the conveying pipe (1). The end of the drive shaft (10) close to the drive motor (9) is fixedly connected to the output end of the drive motor (9). A partition (11) is located inside the conveying pipe (1) and is fixedly connected to the conveying pipe (1), and the axis of the partition (11) coincides with the axis of the conveying pipe (1); The drive shaft (12) is rotatably mounted on the partition plate (11), and one end of the drive shaft (12) near the drive shaft (10) is fixedly connected to the drive shaft (10).

3. The precast concrete aggregate conveying device according to claim 2, characterized in that, An arc-shaped rod (23) is fixedly installed inside the arc-shaped transposition groove (7), and the arc-shaped rod (23) is slidably connected to the arc-shaped slider (15).

4. The precast concrete aggregate conveying device according to claim 3, characterized in that, The conveying mechanism includes: The conveying shaft (24) is located inside the conveying pipe (1), and one end of the conveying shaft (24) near the drive shaft (12) is fixedly connected to the drive shaft (12). The main feeding blade (25) is fixedly installed on the conveying shaft (24). The sliding groove (26) has multiple sliding grooves (26) evenly opened on the surface of the conveying shaft (24), and a fixing rod (27) is fixedly installed in the sliding groove (26).

5. A precast concrete aggregate conveying device according to claim 4, characterized in that, The arch-breaking mechanism includes: The sliding sleeve (28) is disposed on the conveying shaft (24), and the sliding sleeve (28) always covers the sliding groove (26) when it is in the sliding state. The sliding block (29) is slidably disposed in the sliding groove (26) and fixedly connected to the sliding sleeve (28). The sliding block (29) is slidably connected to the fixed rod (27). Built-in springs (30) are located in the sliding groove (26), and two built-in springs (30) are provided in the sliding groove (26). The two built-in springs (30) are both sleeved on the fixed rod (27) and symmetrically distributed on both sides of the sliding block (29). The auxiliary feeding blade (31) is fixedly mounted on the sliding sleeve (28), and the auxiliary feeding blade (31) is used to convey the material in the direction of the main feeding blade (25); There are two arch-breaking scrapers (32), and the two arch-breaking scrapers (32) are symmetrically arranged on the sliding sleeve (28), and the arch-breaking scrapers (32) are fixedly connected to the sliding sleeve (28).

6. The precast concrete aggregate conveying device according to claim 1, characterized in that, The inner diameter of the sand delivery pipe (4) and the stone delivery pipe (5) gradually decreases from the end away from the delivery pipe (1) to the point where they connect with the delivery pipe (1).

7. A precast concrete aggregate conveying device according to claim 5, characterized in that, The discharge end of the conveying pipe (1) is fixedly provided with a second connecting flange (33).

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