Method for producing boron particle shield concrete and compacting device thereof

Abstract

The application discloses a preparation method of boron particle shielding concrete, and the raw material composition of the boron particle shielding concrete comprises sand, 5-25 stone, Huaxia cement, fly ash, mineral powder, water, additive, boron particles, bulk density and fine aggregate; considering that the abundance of boron element in boron-magnesium ore is low and the content stability of the boron element is poor, artificial admixture is used as the fine aggregate, boron carbide, iron powder and polyethylene are granulated, the iron powder is used for adjusting the density of boron polyethylene particles, the density of the boron polyethylene particles is close to that of ordinary concrete stone, the stability of the boron is good, the density of the aggregate is close, the construction process of the boron concrete is relatively simple, a certain amount of hydrogen element can be introduced into the polyethylene, the neutron protection effect is better than that of the boron-magnesium ore concrete, the block mixing test is conducted on the boron polyethylene particle concrete, the particle addition is 3%-7%, the influence on the strength of the concrete is small, and the 28-day strength can meet the design requirements.

Description

Technical Field

[0001] This invention relates to the field of neutron radiation shielding technology, specifically to a method for preparing boron particle shielding concrete and its compaction device. Background Technology

[0002] Neutrons are nucleons that make up the atomic nucleus. They are uncharged and possess strong penetrating power and a high susceptibility to nuclear reactions. Therefore, neutrons are excellent probe particles for studying nuclear reactions and also play a dominant role in the development and application of nuclear energy. Shielding against neutrons is essential from reactors to various nuclear devices. Neutrons produced in reactors typically exhibit a continuous neutron spectrum with a Maxwell distribution, while neutrons produced by bombarding spallation targets with high-energy particle accelerators can reach neutron volts of hundreds of megaelectron volts or higher.

[0003] This method uses magnetite, limonite, or barite as coarse and fine aggregates, while introducing sufficient amounts of water of crystallization and compounds containing light elements such as boron and lithium, along with their admixtures. This is currently the most widely used method. Its advantages include high-density coarse and fine aggregates that can shield against gamma rays, and compounds containing light elements that effectively capture neutrons without forming secondary gamma rays, resulting in good gamma-ray shielding. However, due to the use of high-density materials as aggregates, segregation is common, leading to poor concrete workability, high heat of hydration in cement, easy cracking of concrete, poor durability, and poor safety of solidifying nuclear waste.

[0004] After preparation, existing shielding concrete requires test block mixing. Before the test, the shielding concrete needs to be compacted. However, existing concrete compaction devices are not convenient for cleaning and recycling the concrete adhering to the plate after use, and it is difficult to remove the concrete test blocks. This increases the labor intensity of the staff and reduces the efficiency of the test. Summary of the Invention

[0005] The technical problem solved by this invention is to overcome the defects of the prior art and provide a method for preparing boron particle shielded concrete and its compaction device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a method for preparing boron particle shielded concrete, wherein the raw material composition of the boron particle shielded concrete includes sand, 5-25 aggregate, China Resources cement, fly ash, mineral powder, water, admixtures, boron particles, bulk density, and fine aggregate; wherein the proportions of each component are as follows: sand 747kg (18.675%), 5-25 aggregate 980kg (24.5%), China Resources cement 190kg (4.75%), fly ash 70kg (1.75%), mineral powder 85kg (2.125%), water 80kg (2%), admixtures 8.5kg (0.2125%), boron particles 180kg (4.5%), and bulk density 2340kg (58.5%).

[0007] The fine aggregate is boron polyethylene particles, which can be directly added to boron polyethylene concrete.

[0008] A compaction device for boron particle shielded concrete includes a box body and a shell fixedly installed on the top of the box body near the left side. Support legs are fixedly connected to the bottom of the box body near its four corners. A support plate is provided in the inner cavity of the shell near its bottom, and load-bearing columns are fixedly connected to the bottom of the support plate near its four corners. Each of the four load-bearing columns has an arc-shaped slot at its bottom end. Slide rails are fixedly connected to the top of the box body near its front and rear sides. The four load-bearing columns are slidably connected to the slide rails through the arc-shaped slots. A traction rod is fixedly connected to the bottom of the support plate near the left side. A limiting slot matching the traction rod is provided on the top of the box body. The bottom end of the traction rod passes through the limiting slot, extends into the inner cavity of the box body, and is fixedly connected to a first threaded sleeve. A first threaded rod is screwed into the inner cavity of the first threaded sleeve. A first opening is provided on the top of the box body near the right side. A vertical plate is inserted into the inner cavity of the housing. The bottom of the vertical plate is fixedly connected to the bottom of the inner cavity of the housing. A first bearing is fixedly connected to the left side of the vertical plate, and a second bearing is fixedly connected to the left side of the housing. The left and right ends of the first threaded rod are respectively inserted into the inner cavities of the second bearing and the first bearing. A first servo motor is fixedly installed on the left side of the inner cavity of the housing, and a transmission gear is fixedly connected to the power output end of the first servo motor. A driven gear meshes with the top of the transmission gear, and the driven gear is sleeved and fixed on the first threaded rod. A mold is welded at the top middle position of the support plate. A second opening is provided at the bottom right side of the housing. A cylinder is fixedly installed at the top of the inner cavity of the housing, and a pressure plate is fixedly connected to the telescopic end of the cylinder. A striking mechanism is provided on the outside of the mold, and a cleaning mechanism is provided at the bottom of the pressure plate. A demolding mechanism is provided near the right side of the inner cavity of the housing.

[0009] Preferably, a groove is provided at the top center of the support plate, and a top plate is fitted inside the groove. Through holes are provided at the bottom of the groove near the four corners.

[0010] Preferably, a connecting rod is fixedly connected to the top of the pressure plate near the four corners, and a connecting plate is fixedly connected to the other end of the connecting rod. Two first sliding grooves are opened on the left and right sides of the inner cavity of the housing, and a first slider is slidably connected to the inner cavity of each of the two first sliding grooves. The four first sliders are respectively fixedly connected to the adjacent connecting plates.

[0011] Preferably, the striking mechanism includes two side plates, which are respectively fixedly connected to the top of the support plate near the left and right sides. Movable plates are attached to the front sides of both side plates. A first spring is fixedly connected to an adjacent side of each of the two movable plates, and a steel ball is fixedly connected to the other end of the first spring. Fixed plates are provided on the opposite sides of the two movable plates, and these fixed plates are fixedly connected to the side plates. Square holes are provided on both fixed plates, and T-shaped rods penetrate the inner cavities of these square holes. Adjacent ends of the two T-shaped rods are respectively fixedly connected to adjacent movable plates. Second springs are sleeved on the outer sides of both T-shaped rods. Both ends are fixedly connected to a fixed plate and a T-shaped square rod, respectively. Circular holes are opened near the left and right sides of the support plate, and a third bearing is fixedly installed in the inner cavity of each circular hole. A drive shaft is rotatably connected to the inner cavity of each of the two third bearings, and a cam is sleeved and fixed to the outer wall of each drive shaft. A single groove wheel is sleeved and fixed to the outer wall of each of the two drive shafts near the bottom. A belt is provided between the two single groove wheels, and the two single groove wheels are connected by belt drive. An L-shaped plate is fixedly connected to the bottom of the support plate near the left side, and a second servo motor is fixedly installed on the top of the L-shaped plate. The power output end of the second servo motor is fixedly connected to the bottom end of the adjacent drive shaft.

[0012] Preferably, the cleaning mechanism includes a rotating square rod, which is fixedly connected to the top end of the left drive shaft. A matching square-hole round tube is sleeved on the outer side of the top end of the rotating square rod, and a collection tray is fixedly connected to the top end of the square-hole round tube. A third opening is provided on the left side of the housing, and the left side of the collection tray passes through the third opening and extends to the outer side of the housing. A fixing rod is fixedly connected to the bottom of the inner cavity of the collection tray near the right side, and the top end of the fixing rod extends above the collection tray and is fixedly connected to a scraper. The top of the scraper is flush with the bottom of the pressure plate, and the frontal cross-section of the scraper is a right-angled trapezoid.

[0013] Preferably, the demolding mechanism includes a lifting plate, which is fitted to the right side of the vertical plate. A second slider is fixedly connected to the left side of the lifting plate. A second slide groove is opened on the right side of the vertical plate, and the second slider is slidably connected to the inner cavity of the second slide groove. A top rod matching the through hole is fixedly connected to the top of the lifting plate near the four corners. The top end of the top rod passes through the first opening and extends to the top of the box. A second threaded sleeve is fixedly connected to the right side of the lifting plate, and a second threaded rod is screwed into the inner cavity of the second threaded sleeve. The bottom end of the second threaded rod is rotatably connected to the bottom of the inner cavity of the box. A driven bevel gear is sleeved and fixedly connected to the outer wall of the second threaded rod near the bottom end. A transmission bevel gear meshes with the right side of the driven bevel gear. A rotating rod is fixedly connected to the center of the right side of the transmission bevel gear. A fourth bearing is fixedly connected to the right side of the box. The right end of the rotating rod passes through the inner cavity of the fourth bearing and is fixedly connected to a hand crank.

[0014] Compared with the prior art, the beneficial effects of Embodiment 1 of the present invention are:

[0015] In this invention, boron-polyethylene concrete is used. Considering the low abundance and poor stability of boron content in boron-magnesium ore, artificial admixtures are used as fine aggregates. Boron carbide, iron powder, and polyethylene are granulated, and the iron powder adjusts the density of the boron-polyethylene particles to make them close to the density of ordinary concrete aggregate. Boron has good stability, and the similar aggregate density makes the construction process of boron concrete simpler. Moreover, polyethylene can introduce a certain amount of hydrogen, which has a better neutron protection effect than boron-magnesium ore concrete. Test block mixing experiments were conducted on boron-polyethylene granular concrete. The particle addition of 3%-7% has little impact on the concrete strength, and the 28-day strength can meet the design requirements. In addition, using boron-polyethylene particles as fine aggregates and directly adding them to the concrete, the density of boron-polyethylene fine aggregates is close to that of natural aggregates, and there will be no settlement or other construction quality problems during construction. The construction and quality control processes are relatively simple.

[0016] Compared with the prior art, the beneficial effects of Embodiment 2 of the present invention are:

[0017] By configuring a first servo motor, transmission gear, driven gear, first threaded rod, traction rod, load-bearing column, arc-shaped slot, and slide rail, the support plate can be moved horizontally after the first servo motor is started. This allows the mold to be moved to the right side of the housing and filled with boron particle shielding concrete before being pulled back into the housing cavity. Then, the pressure plate is pushed downwards by the starting cylinder, compacting the shielding concrete inside the mold cavity. Next, the second servo motor is started, rotating the transmission shaft on the left side. This rotation, through the connection of the rotating square rod and the square-hole round tube, rotates the collecting tray 180 degrees. When the first servo motor is restarted and the support plate moves to the right, the horizontal movement of the scraper cleans the concrete adhering to the bottom of the pressure plate and collects it into the collecting tray. After the collecting tray moves to the right side of the housing, it can be removed to recover the concrete inside. After the concrete cools, the first servo motor is started... The second servo motor drives the left drive shaft to rotate in both directions, and through the transmission connection between the two single-grooved pulleys and the belt, it can drive the right drive shaft to rotate synchronously. When the drive shaft rotates, it can drive the adjacent cam to reciprocate. The deflection of the cam can drive the movable plate to overcome the resistance of the second spring and move it closer to the mold. Through the first spring, it drives the steel ball to reciprocate to strike the outer wall of the mold, thereby loosening the test block in the inner cavity of the mold. Then, by turning the hand crank, the rotating rod can be driven to rotate. Through the meshing of the transmission bevel gear and the driven bevel gear, the second threaded rod can be driven to rotate. The rotation of the second threaded rod drives the second threaded sleeve to move vertically upward, and drives the lifting plate to move vertically upward. This causes several push rods to pass through the adjacent through holes and jointly push the top plate to move upward, thereby removing the concrete test block from the top of the inner cavity of the mold. This makes it easier for the staff to take out the shielded concrete test block and test its strength. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of Embodiment 2 of the present invention;

[0019] Figure 2 This is a top view of the component support plate in Embodiment 2 of the present invention;

[0020] Figure 3 This is a left view of the support plate in Embodiment 2 of the present invention;

[0021] Figure 4 In Embodiment 2 of the present invention Figure 1 Enlarged view of the structure at point A.

[0022] The following are the labeling elements in the diagram: 1. Box body; 2. Support leg; 3. Shell; 4. Cylinder; 5. Pressure plate; 6. Connecting rod; 7. Support plate; 8. Mold; 9. Traction rod; 10. First threaded sleeve; 11. First threaded rod; 12. Vertical plate; 13. First servo motor; 14. Transmission gear; 15. Driven gear; 16. Transmission shaft; 17. Second servo motor; 18. Single grooved pulley; 19. Belt; 20. Cam; 21. Side plate; 22. T-shaped square rod; 23. Second spring; 24. Movable plate; 25. First spring; 26. Steel ball; 27. Load-bearing column; 28. Top plate; 29. ​​Through hole; 30. Slide rail; 31. Lifting plate; 32. Top rod; 33. Second threaded sleeve; 34. Second threaded rod; 35. Transmission bevel gear; 36. Driven bevel gear; 37. Rotating rod; 38. Hand crank; 39. Arc-shaped slot; 40. Rotating square rod; 41. Square hole round tube; 42. Collection tray; 43. Fixed rod; 44. Scraper; 45. Limiting slot. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4 This invention provides a technical solution: a method for preparing boron particle shielded concrete. The raw material composition of the boron particle shielded concrete includes sand, 5-25 aggregate, China Resources cement, fly ash, mineral powder, water, admixtures, boron particles, bulk density, and fine aggregate; wherein the proportions of each component are as follows: 747 kg of sand (18.675%), 980 kg of 5-25 aggregate (24.5%), 190 kg of China Resources cement (4.75%), 70 kg of fly ash (1.75%), 85 kg of mineral powder (2.125%), 80 kg of water (2%), 8.5 kg of admixtures (0.2125%), 180 kg of boron particles (4.5%), and 2340 kg of bulk density (58.5%).

[0025] The fine aggregate is boron polyethylene granules, which can be directly added to boron polyethylene concrete.

[0026] Table 1 shows the mix proportions for boron-polyethylene concrete:

[0027]

[0028] Referring to the method in Example 1, raw materials were selected according to the proportions in Table 1. Considering the low abundance and poor stability of boron content in boron-magnesium ore, artificial admixtures were used as fine aggregates. Boron carbide, iron powder, and polyethylene were used for granulation. Iron powder was used to adjust the density of boron-polyethylene particles, making the particle density close to that of ordinary concrete aggregate. Boron has good stability, and the similar aggregate density makes the construction process of boron concrete simpler. Moreover, polyethylene can introduce a certain amount of hydrogen, which has a better neutron protection effect than boron-magnesium ore concrete. A test block mixing experiment was conducted on boron-polyethylene particle concrete. The particle addition was 3%-7%, which had little impact on the concrete strength. The 28-day strength could meet the design requirements. In addition, using boron-polyethylene particles as fine aggregates and directly adding them to the concrete, the density of boron-polyethylene fine aggregates is close to that of natural aggregates, and there will be no settlement or other construction quality issues during construction. The construction process and quality control are relatively simple.

[0029] Example 2:

[0030] The compaction device for boron particle shielded concrete includes a box body 1 and a shell 3 fixedly installed on the top of the box body 1 near the left side. Support legs 2 are fixedly connected to the bottom of the box body 1 near the four corners. A support plate 7 is provided inside the shell 3 near the bottom, and load-bearing columns 27 are fixedly connected to the bottom of the support plate 7 near the four corners. The bottom ends of the four load-bearing columns 27 are each provided with an arc-shaped slot 39. Slide rails 30 are fixedly connected to the top of the box body 1 near the front and rear sides. The four load-bearing columns 27 are slidably connected to the slide rails 30 through the arc-shaped slots 39. The bottom of the support plate 7 is fixedly connected to the support plate 3 near the left side. A traction rod 9 is connected to the box body 1. A limiting slot 45 matching the traction rod 9 is provided on the top of the box body 1. The bottom end of the traction rod 9 passes through the limiting slot 45, extends into the inner cavity of the box body 1, and is fixedly connected to a first threaded sleeve 10. A first threaded rod 11 is screwed into the inner cavity of the first threaded sleeve 10. A first opening is provided on the top of the box body 1 near the right side, and a vertical plate 12 is inserted into the inner cavity of the first opening. The bottom of the vertical plate 12 is fixedly connected to the bottom of the inner cavity of the box body 1. A first bearing is fixedly connected to the left side of the vertical plate 12, and a second bearing is fixedly connected to the left side of the box body 1. The first threaded rod 11... The left and right ends of 1 are respectively inserted into the inner cavities of the second bearing and the first bearing. The first servo motor 13 is fixedly installed on the left side of the inner cavity of the housing 1, and the power output end of the first servo motor 13 is fixedly connected to the transmission gear 14. The top of the transmission gear 14 meshes with the driven gear 15, and the driven gear 15 is sleeved and fixed on the first threaded rod 11. A mold 8 is welded at the top center of the support plate 7. A groove is opened at the top center of the support plate 7, and a top plate 28 is fitted inside the groove. Through holes 29 are opened at the bottom of the groove near the four corners. The right side of the housing 3 A second opening is provided at the bottom. A cylinder 4 is fixedly installed at the top of the inner cavity of the housing 3, and a pressure plate 5 is fixedly connected to the telescopic end of the cylinder 4. A connecting rod 6 is fixedly connected to the top of the pressure plate 5 near the four corners, and a connecting plate is fixedly connected to the other end of the connecting rod 6. Two first sliding grooves are provided on the left and right sides of the inner cavity of the housing 3, and a first slider is slidably connected to the inner cavity of the two first sliding grooves. The four first sliders are fixedly connected to the adjacent connecting plates respectively. A knocking mechanism is provided on the outside of the mold 8, a cleaning mechanism is provided at the bottom of the pressure plate 5, and a demolding mechanism is provided near the right side of the inner cavity of the box 1.

[0031] The striking mechanism includes two side plates 21, which are fixedly connected to the top of the support plate 7 near the left and right sides. Movable plates 24 are attached to the front of each side plate 21. A first spring 25 is fixedly connected to an adjacent side of each movable plate 24, and a steel ball 26 is fixedly connected to the other end of each first spring 25. Fixed plates are provided on the opposite sides of each movable plate 24, and these fixed plates are fixedly connected to the side plates 21. Square holes are provided on both fixed plates, and T-shaped rods 22 pass through the inner cavities of these holes. Adjacent ends of the two T-shaped rods 22 are fixedly connected to adjacent movable plates 24. Second springs 23 are sleeved on the outer sides of each T-shaped rod 22. The ends are fixedly connected to the fixed plate and the T-shaped square rod 22 respectively. The support plate 7 has round holes near the left and right sides, and the inner cavity of the round holes is fixedly installed with a third bearing. The inner cavities of the two third bearings are rotatably connected to the drive shaft 16, and the outer wall of the drive shaft 16 is sleeved and fixedly fitted with a cam 20. The outer wall of the two drive shafts 16 is sleeved and fixedly fitted with a single groove wheel 18 near the bottom. The two single groove wheels 18 are connected by a belt 19, and the two single groove wheels 18 are connected by the belt 19. The bottom of the support plate 7 is fixedly connected to the left side, and the top of the L-shaped plate is fixedly installed with a second servo motor 17. The power output end of the second servo motor 17 is fixedly connected to the bottom end of the adjacent drive shaft 16.

[0032] The cleaning mechanism includes a rotating square rod 40, which is fixedly connected to the top of the left drive shaft 16. A square-hole round tube 41 matching the rotating square rod 40 is sleeved on the outer side of the top of the rotating square rod 40, and a collection tray 42 is fixedly connected to the top of the square-hole round tube 41. A third opening is provided on the left side of the housing 3, and the left side of the collection tray 42 passes through the third opening and extends to the outer side of the housing 3. A fixing rod 43 is fixedly connected to the bottom of the inner cavity of the collection tray 42 near the right side, and the top of the fixing rod 43 extends to the top of the collection tray 42 and is fixedly connected to a scraper 44. The top of the scraper 44 is flush with the bottom of the pressure plate 5, and the front cross-section of the scraper 44 is a right-angled trapezoid.

[0033] The demolding mechanism includes a lifting plate 31, which is fitted against the right side of the vertical plate 12. A second slider is fixedly connected to the left side of the lifting plate 31. A second slide groove is opened on the right side of the vertical plate 12, and the second slider is slidably connected to the inner cavity of the second slide groove. At the top of the lifting plate 31, near each of the four corners, a push rod 32 matching the through hole 29 is fixedly connected. The top end of the push rod 32 passes through the first opening and extends to the top of the housing 1. A second threaded sleeve 33 is fixedly connected to the right side of the lifting plate 31. The inner cavity of the threaded sleeve 33 is screwed with a second threaded rod 34. The bottom end of the second threaded rod 34 is rotatably connected to the bottom of the inner cavity of the housing 1. A driven bevel gear 35 is sleeved and fixed near the bottom end of the outer wall of the second threaded rod 34. A transmission bevel gear 36 meshes with the right side of the driven bevel gear 35. A rotating rod 37 is fixedly connected to the center of the right side of the transmission bevel gear 36. A fourth bearing is fixedly connected to the right side of the housing 1. The right end of the rotating rod 37 passes through the inner cavity of the fourth bearing and is fixedly connected to a hand crank 38.

[0034] Working principle: In use, the first servo motor 13 is started to drive the transmission gear 14 to rotate. The rotation of the transmission gear 14 drives the driven gear 15 to rotate, which in turn drives the first threaded rod 11 to rotate. The rotation of the first threaded rod 11 drives the first threaded sleeve 10 to move horizontally to the right, and the support plate 7 is moved horizontally to the right by the traction rod 9. The support plate 7 is stably supported by the sliding of the load-bearing column 27 on the slide rail 30. After the support plate 7 is moved to the right side of the shell 3, the prepared boron particle shielding concrete can be poured into the mold 8, and the first servo motor is started. 13. Reverse rotation and reset of mold 8. Then, by starting cylinder 4, push pressure plate 5 downward, thereby compacting the shielding concrete inside mold 8. Then, start second servo motor 17 to drive the left drive shaft 16 to rotate, and drive collection plate 42 to rotate 180 degrees through the connection of rotating square rod 40 and square hole round tube 41, rotating it to below pressure plate 5. Thus, when the first servo motor 13 is restarted and the support plate 7 is moved to the right, the horizontal movement of scraper 44 can clean the concrete adhering to the bottom of pressure plate 5 and collect it into collection plate 42. After the collection tray 42 is moved to the right side of the housing 3, the collection tray 42 can be removed and the concrete inside its cavity can be recycled. After the concrete cools, the second servo motor 17 is started to drive the left drive shaft 16 to rotate in both directions. Through the transmission connection between the two single grooved pulleys 18 and the belt 19, the right drive shaft 16 can be driven to rotate synchronously. When the drive shaft 16 rotates, it can drive the adjacent cam 20 to reciprocate. The deflection of the cam 20 can drive the movable plate 24 to overcome the resistance of the second spring 23 and move it closer to the mold 8. Through the first spring 25, it drives the steel ball 26 to reciprocate to strike the outer wall of the mold 8. This allows the concrete test block inside the mold 8 to be loosened by tapping. Then, by rotating the hand crank 38, the rotating rod 37 can be rotated. Through the meshing of the transmission bevel gear 35 and the driven bevel gear 36, the second threaded rod 34 is rotated. The rotation of the second threaded rod 34 causes the second threaded sleeve 33 to move vertically upward, and causes the lifting plate 31 to move vertically upward. This allows several top rods 32 to pass through adjacent through holes 29 and jointly push the top plate 28 upward, thereby removing the concrete test block from the top of the mold 8. This makes it easier for workers to remove the shielded concrete test block and test its strength.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compaction device for boron particle shielded concrete, comprising a box (1) and a shell (3) fixedly installed on the top of the box (1) near the left side, characterized in that: The bottom of the box (1) is fixedly connected to the four corners with support feet (2). The inner cavity of the shell (3) is provided with a support plate (7) near the bottom. The bottom of the support plate (7) is fixedly connected to the four corners with load-bearing columns (27). The bottom ends of the four load-bearing columns (27) are provided with arc-shaped slots (39). The top of the box (1) is fixedly connected to the front and rear sides with slide rails (30). The four load-bearing columns (27) are slidably connected to the slide rails (30) through the arc-shaped slots (39). The bottom of the support plate (7) is fixedly connected to the left side with a traction rod (9). The top of the box (1) is provided with a limiting slot (45) that matches the traction rod (9). The bottom end of the traction rod (9) passes through... A limiting slot (45) extends into the inner cavity of the housing (1) and is fixedly connected to a first threaded sleeve (10). The inner cavity of the first threaded sleeve (10) is screwed with a first threaded rod (11). A first opening is provided on the top of the housing (1) near the right side, and a vertical plate (12) is inserted into the inner cavity of the first opening. The bottom of the vertical plate (12) is fixedly connected to the bottom of the inner cavity of the housing (1), and a first bearing is fixedly connected to the left side of the vertical plate (12). A second bearing is fixedly connected to the left side of the housing (1). The left and right ends of the first threaded rod (11) are respectively inserted into the inner cavities of the second bearing and the first bearing. A first servo motor (13) is fixedly installed on the left side of the inner cavity of the housing (1), and the first servo motor (11) is fixedly connected to the inner cavity of the housing (1). 3) The power output end is fixedly connected to a transmission gear (14), the top of the transmission gear (14) is meshed with a driven gear (15), and the driven gear (15) is sleeved and fixed on the first threaded rod (11). A mold (8) is welded at the middle position of the top of the support plate (7). A second opening is provided at the bottom right side of the housing (3). A cylinder (4) is fixedly installed at the top of the inner cavity of the housing (3), and a pressure plate (5) is fixedly connected to the telescopic end of the cylinder (4). A knocking mechanism is provided on the outside of the mold (8). A cleaning mechanism is provided at the bottom of the pressure plate (5). A demolding mechanism is provided near the right side of the inner cavity of the box (1). The cleaning mechanism includes a rotating square rod (40), and the rotating square rod (40) The rotating square rod (40) is fixedly connected to the top of the left drive shaft (16). The top of the rotating square rod (40) is fitted with a matching square hole round tube (41), and the top of the square hole round tube (41) is fixedly connected to a collection plate (42). The left side of the housing (3) has a third opening, and the left side of the collection plate (42) passes through the third opening and extends to the outside of the housing (3). The bottom of the inner cavity of the collection plate (42) is fixedly connected to a fixing rod (43) near the right side, and the top of the fixing rod (43) extends to the top of the collection plate (42) and is fixedly connected to a scraper (44). The top of the scraper (44) is flush with the bottom of the pressure plate (5), and the front cross section of the scraper (44) is a right trapezoid.

2. The compaction device for boron particle shielded concrete according to claim 1, characterized in that: The support plate (7) has a groove at the top center, and a top plate (28) is fitted inside the groove. Through holes (29) are provided at the bottom of the groove near the four corners.

3. The compaction device for boron particle shielded concrete according to claim 2, characterized in that: The top of the pressure plate (5) is fixedly connected to the four corners with connecting rods (6), and the other end of the connecting rods (6) is fixedly connected to a connecting plate. The inner cavity of the housing (3) has two first sliding grooves on the left and right sides, and the inner cavities of the two first sliding grooves are slidably connected with first sliders. The four first sliders are respectively fixedly connected to the adjacent connecting plates.

4. The compaction device for boron particle shielded concrete according to claim 3, characterized in that: The striking mechanism includes two side plates (21), and the two side plates (21) are respectively fixedly connected to the top of the support plate (7) near the left and right sides. The front sides of the two side plates (21) are fitted with movable plates (24). The adjacent sides of the two movable plates (24) are fixedly connected with first springs (25), and the other end of the first springs (25) is fixedly connected with steel balls (26). The opposite sides of the two movable plates (24) are provided with fixed plates, and the fixed plates are fixedly connected to the side plates (21). The two fixed plates are provided with square holes, and T-shaped square rods (22) are passed through the inner cavity of the square holes. The adjacent ends of the two T-shaped square rods (22) are respectively fixedly connected to the adjacent movable plates (24). The outer sides of the two T-shaped square rods (22) are fitted with second springs (23), and the second springs (24) are fitted with steel balls (26). 3) The two ends are fixedly connected to the fixed plate and the T-shaped square rod (22) respectively. The support plate (7) has round holes near the left and right sides, and the inner cavity of the round hole is fixedly installed with a third bearing. The inner cavities of the two third bearings are rotatably connected to the transmission shaft (16). The outer wall of the transmission shaft (16) is sleeved and fixedly fitted with a cam (20). The outer wall of the two transmission shafts (16) is sleeved and fixedly fitted with a single groove wheel (18) near the bottom. The two single groove wheels (18) are connected by a belt (19), and the two single groove wheels (18) are connected by a transmission belt (19). The bottom of the support plate (7) is fixedly connected to the left side, and the top of the L-shaped plate is fixedly installed with a second servo motor (17). The power output end of the second servo motor (17) is fixedly connected to the bottom end of the adjacent transmission shaft (16).

5. The compaction device for boron particle shielded concrete according to claim 1, characterized in that: The demolding mechanism includes a lifting plate (31), which is fitted to the right side of the vertical plate (12). A second slider is fixedly connected to the left side of the lifting plate (31). A second slide groove is opened on the right side of the vertical plate (12), and the second slider is slidably connected to the inner cavity of the second slide groove. A top rod (32) matching the through hole (29) is fixedly connected to the top of the lifting plate (31) near the four corners. The top of the top rod (32) passes through the first opening and extends to the top of the box (1). A second threaded sleeve (33) is fixedly connected to the right side of the lifting plate (31). The inner cavity of the second threaded sleeve (33) is screwed with a second threaded rod (34). The bottom end of the second threaded rod (34) is rotatably connected to the bottom of the inner cavity of the housing (1). A driven bevel gear (35) is sleeved and fixed near the bottom end of the outer wall of the second threaded rod (34). A transmission bevel gear (36) meshes with the right side of the driven bevel gear (35). A rotating rod (37) is fixedly connected to the center of the right side of the transmission bevel gear (36). A fourth bearing is fixedly connected to the right side of the housing (1). The right end of the rotating rod (37) passes through the inner cavity of the fourth bearing and is fixedly connected to a hand crank (38).

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