A detector throwing device for performing nuclear and radiation environment monitoring

Abstract

The present invention proposes a detector throwing device for performing nuclear and radiation environment monitoring, wherein the bin top is fixed to the ball bin shell, and an accommodating space is formed by the bin top and the ball bin shell, and the ball bin rotates around the center of the ball bin in the accommodating space; the ball bin is provided with a plurality of detector placement holes to form a plurality of detector placement positions, and the detector is a detection ball, which is placed in the detector placement hole and supported by the ball bin shell; a boss is provided at the edge of the detector placement hole, and a crank slide is formed between two adjacent detector placement holes, and the crank slide is a groove formed by the diameter of two adjacent bosses, so as to provide a force application point for the crank; the stepper motor is fixed to the bin top through a motor fixing frame, and the output shaft of the stepper motor is connected to the first end of the crank, and the movement of the stepper motor drives the crank to move, and a detector delivery hole is provided at the bottom of the ball bin shell, and the detector is released through the detector delivery hole. When the number of the detector delivery holes is n, n-1 detectors can be delivered.

Description

Technical Field

[0001] The present invention relates to the technical field of casting devices, and more particularly, to a detector casting device for performing nuclear and radiation environment monitoring. Background Art

[0002] With the widespread application of nuclear technology, the risk of nuclear and radiation accidents is becoming increasingly serious, necessitating careful preparation for and response to nuclear and radiation accidents. Following a nuclear and radiation accident, radiation detection at the accident site is crucial for assessing the severity of the accident and developing rescue action plans.

[0003] Typically, emergency response teams dispatch nuclear and radiation inspection personnel, equipped with radiation monitoring instruments, to the accident site to conduct on-site measurements. This method is effective in the vicinity of the accident site, but it still exposes the inspectors to a certain level of radiation exposure. Technological advancements, including the development of radiation inspection vehicles and drones, have significantly increased the speed and scope of radiation monitoring, while significantly reducing the radiation dose to rescue workers.

[0004] However, under conditions of major nuclear safety threats, the core area of ​​the accident may have high radiation dose rates, ongoing risk factors, and inaccessible sites. This presents challenges in radiation detection and the failure of conventional detection methods. Therefore, drones can be used to deliver detection equipment to achieve nuclear and radiation monitoring in high-risk areas, resolving issues such as the difficulty of conventional detection methods, the significant health hazards posed by radiation, and the slow speed of point-by-point monitoring during nuclear and radiation environmental monitoring missions.

[0005] Compared with conventional methods, this method has the advantages of strong adaptability to harsh environments, no risk of casualties, and sustainable regional radiation environment detection. It is especially suitable for radiation detection scenarios in the core areas of accidents or where accidents are still progressing rapidly. Summary of the Invention

[0006] In response to the problems in the prior art, the purpose of the present invention is to provide a detector throwing device for performing nuclear and radiation environment monitoring, which includes a ball bin shell, a ball bin, a bin top, a crank, a motor mounting bracket, and a motor. The ball bin shell and the bin top form a storage space, and the ball bin is placed in the storage space. The motor is fixed to the upper surface of the bin top through the motor mounting bracket. The movement of the motor drives the movement of the crank, thereby realizing the controlled rotation of the ball bin in the storage space. The bottom inner side of the ball bin shell is provided with a circular arc groove track and a detector launching hole. When the ball bin drives the detector to move to the detector launching hole at the bottom of the ball bin shell, the detector is ejected from the detector launching hole. The detector throwing device for performing nuclear and radiation environment monitoring has a simple structure, high efficiency, and strong practicality. It can be carried on unmanned aerial vehicle equipment to realize the remote launch of detectors, such as radiation detectors.

[0007] The technical solutions of the present invention are as follows:

[0008] A detector throwing device for performing nuclear and radiation environment monitoring, which includes a detector, a ball bin shell, a ball bin, a crank, a bin top, a motor fixing frame, a stepping motor, a first bearing, a second bearing, and a detector; the bin top is fixed to the ball bin shell, and a receiving space is formed by the bin top and the ball bin shell, and the inner side of the bottom surface of the ball bin shell is provided with a first bearing mounting portion, and the second bearing is placed in the first bearing mounting portion; the lower part of the ball bin is placed on the inner ring of the second bearing, and the ball bin rotates around the center of the ball bin in the receiving space; the ball bin is provided with a plurality of detector placement holes to form a plurality of detector placement positions, and the detector is a detection ball, which is placed in the detector placement hole and supported by the ball bin shell; the edge of the detector placement hole is provided with a A boss is placed, and a crank slide is formed between two adjacent detector placement holes. The crank slide is a groove formed by the diameter of two adjacent bosses, and is arranged in this way to provide a force point for the crank; the stepper motor is fixed to the top of the warehouse through a motor fixing frame, and the top of the warehouse is provided with a bearing hole for accommodating a first bearing and a crank hole coaxial with the bearing hole. The first bearing is interference fit with the bearing hole. After the upper part of the crank extends out of the bearing hole, it is supported by the first bearing for rotation. The output shaft of the stepper motor is connected to the first end of the crank, and the movement of the stepper motor drives the movement of the crank. A detector delivery hole is provided at the bottom of the ball warehouse shell, and the detector is released through the detector delivery hole. When the number of detector delivery holes is n, n-1 detectors can be delivered.

[0009] Preferably, the detector casting device for performing nuclear and radiation environment monitoring according to the present invention also includes a motor control housing, a motor controller, a power supply and a driver; the stepper motor is connected to the power supply through a cable, the stepper motor is connected to the motor controller through a cable, the power supply is connected to the driver, the driver is connected to the stepper motor, and the power supply is connected to the motor controller; the driver converts the pulse signal of the motor controller into angular displacement and transmits it to the stepper motor to realize driving.

[0010] Preferably, the bottom of the ball warehouse shell is provided with an arc groove track, which facilitates the transportation of the detector inside the accommodation space.

[0011] Preferably, the ball bin includes a first rotation support portion, a turntable, a support column and a crank guide portion.

[0012] Preferably, the detector placement holes are evenly arranged at equal intervals along the turntable surface of the ball warehouse with the center of the ball warehouse.

[0013] Preferably, during the rotation of the ball bin, the outer side walls of the pillars rotate along the inner wall of the ball bin shell, and the pillars are circumferentially spaced along the outer side wall of the turntable.

[0014] Preferably, the crank guide portion is an arc-shaped baffle; the crank guide portion is configured to cooperate with the crank to achieve crank guidance.

[0015] Preferably, a circular groove is provided in the center of the upper surface of the disc, and the contour of the inner wall of the circular groove coincides with the circular contour line formed by the top of the first arc surface of the boss; when the crank enters the circular groove area from the crank slide rail, the bottom of the crank does not contact the turntable, effectively reducing the friction between the crank and the upper surface of the turntable.

[0016] Preferably, the crank includes a motor connecting part, a balancing device, a connecting part and a guide column; the balancing device is provided on the outer side of the motor connecting part, the guide column is connected to the motor connecting part through the connecting part, the guide column and the motor connecting part are respectively located at the two ends of the connecting part, and the guide column cooperates with the crank slide rail of the ball bin to drive the ball bin to move.

[0017] Preferably, after the first bearing is installed in the bearing hole, the upper edge of the first bearing is higher than the upper surface of the warehouse top; a groove is provided at the bottom of the motor fixing frame, and the first bearing is further limited by the groove.

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] According to the present invention, a detector-dropping device for performing nuclear and radiation environment monitoring comprises a silo roof secured to a silo housing, forming a storage space between the silo roof and the silo housing. The silo is positioned within this storage space and is provided with multiple detector placement holes, forming multiple detector placement positions. The detectors are probe balls, which are placed within these placement holes and supported by the silo housing. A stepper motor is secured to the silo roof via a motor mounting bracket. The stepper motor's output shaft is connected to the first end of a crank, the second end of which contacts the silo. Movement of the motor drives the crank, thereby rotating the silo. A detector drop hole is provided on the bottom of the silo housing, through which the detector is released. A circular arc groove track is provided on the bottom of the silo housing to facilitate transport of the detector within the storage space. A first bearing mounting portion is provided on the inner side of the bottom surface of the silo housing, with a second bearing positioned within this bearing mounting portion. Preferably, a first set screw mounting hole is provided on the sidewall of the first bearing mounting portion, and the second bearing is secured to the first bearing mounting portion via a set screw. The first rotational support of the ball silo is located below the turntable. Multiple pillars are circumferentially and evenly spaced along the outer wall of the turntable, securing the crank guide via these pillars. Detector placement holes are provided on the turntable. Each detector placement hole is evenly spaced along the turntable surface, centered around the center of the ball silo. The radius of the circle formed by the centers of each detector placement hole, with the center of the ball silo as the origin, is r1; the radius of the circle containing the centers of the detector placement holes, with the center of the ball silo as the origin, is r2, where r1 = r2. The radius of the circle containing the center of the arc-shaped track groove, i.e., its lowest point, is r3, where r1 = r2 = r3. Pillars are provided on the outer wall of the turntable. Preferably, the number of pillars equals the number of detector placement holes. The first end of the pillar is located on the outer wall of the turntable, and the second end of the pillar is provided with a crank guide, located on the inner wall of the pillar, with the main body of the crank guide facing the center of the turntable. The width of the pillar is smaller than the width of the crank guide, ensuring stable support while reducing the weight of the entire device. The outer wall of each pillar is arc-shaped, and the outer wall of each pillar is located on the same circular contour. During the rotation of the ball bin, the outer wall of the pillar rotates along the inner wall of the ball bin shell. The staggered arrangement of the pillars can also effectively reduce the friction between the ball bin shell and the outer wall of the pillar. The crank guide portion is an arc-shaped baffle. From a spatial perspective, it is located at the outer edge of the detector placement hole. The crank guide portion is configured to cooperate with the crank to guide the crank. A boss is provided around each detector placement hole to form a crank slide between two adjacent detector placement holes. The crank slide is a groove formed by the diameter of two adjacent bosses. This arrangement provides a force application point for the crank. Each boss is provided on the upper surface of the turntable. The entrance size of the crank slide is larger than the width of the crank slide to ensure that the lower part of the crank slides smoothly into the crank slide. A circular groove is provided in the center of the upper surface of the disk. The contour of the inner wall of the circular groove coincides with the circular contour line formed by the top of the first arc surface of the boss.When the crank enters the circular groove through the crank rail, the bottom of the crank avoids contact with the turntable, effectively reducing friction between the crank and the upper surface of the turntable. Any friction between the two would reduce operating efficiency. A balancing device is installed on the outer side of the motor connection. This balancing device has a fan-shaped structure. When the ball hopper is in operation, the balancing device is tangential to the curved baffle of the ball hopper 2. The guide post is cylindrical and connected to the motor connection via a connector. The guide post and the motor connection are located at opposite ends of the connector, with the motor connection located above and below. The guide post cooperates with the crank rail of the ball hopper to drive the ball hopper. A countersunk bearing hole is also provided on the top of the hopper to support the first bearing. The bearing hole coincides with the centerline of the crank hole. The first bearing is located within the bearing hole, and the motor connection of the crank is supported for rotation by the inner race of the first bearing. Preferably, the first bearing and the bearing hole have an interference fit, eliminating the need for set screws and saving space for set screw installation. The second set screw mounting hole, after the screw is installed, secures the screw in place and prevents the crank from sinking. Here, three circumferentially arranged screws engage the upper edge of the inner ring of the first bearing, providing support through the first bearing. The crank is secured through the crank hole, the bearing, and the screw holes. After the first bearing is installed in the bearing hole, the upper edge of the first bearing is higher than the upper surface of the silo roof. The bottom of the motor mount is provided with a slot. The motor is secured to the silo roof, for example, to the upper surface of the silo roof, through the motor mount. A stepper motor drives the entire device; the motor's output shaft is connected to the crank. The end of the motor output shaft is D-shaped and extends into the motor connection hole in the crank. The motor mount has a bottom flange with a third fastener connection hole. Correspondingly, the silo roof has a fourth connection hole corresponding to the third fastener connection hole. After the third and fourth fastener connection holes are aligned, the motor mount is secured to the silo roof using fasteners, such as bolts. A circular groove is provided at the bottom of the motor mount, the centerline of which coincides with the centerline of the bearing hole. After the motor mount is attached to the silo roof, the portion of the first bearing that extends above the silo roof is positioned within the circular groove, further limiting the position of the first bearing. The stepper motor is connected to the power supply via a cable, which in turn is connected to the motor controller. The motor controller is a remote control module capable of remote control. The power supply is connected to the driver, which is connected to the motor, and the power supply is connected to the motor controller. A remote control sends commands to the motor controller, which converts the motor controller's pulse signals into angular displacement and transmits them to the stepper motor for driving. The silo's rotational speed is controlled by the motor controller, and the motor's rotational angle is adjusted by pulses from the motor controller. This device is configured to send forward / reverse commands to the remote control, causing the stepper motor to automatically stop after 360° of forward / reverse rotation. The operator can control the rest period, and repeated operations can achieve multiple casting tasks.The motor controller, power supply and driver cooperate to control the stepper motor. All three are fixed in the motor controller housing by fasteners, such as bolts, and the shock absorption function is achieved through the motor controller housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The advantages of the above and / or additional aspects of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0021] Figure 1 Schematic diagram of the structure of a detector casting device for performing nuclear and radiation environment monitoring according to an embodiment of the present invention.

[0022] Figure 2 Schematic diagram of the structure of a radiation detector of a detector casting device for performing nuclear and radiation environment monitoring according to an embodiment of the present invention.

[0023] Figure 3A Schematic diagram of the first structure of a motor fixing frame of a detector casting device for performing nuclear and radiation environment monitoring according to an embodiment of the present invention.

[0024] Figure 3B Schematic diagram of the second structure of the motor fixing frame of the detector casting device for performing nuclear and radiation environment monitoring according to an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of the first structure of a crank of a detector ejection device for performing nuclear and radiation environment monitoring according to an embodiment of the present invention.

[0026] Figure 5A This is a first structural schematic diagram of a ball bin of a detector throwing device for performing nuclear and radiation environment monitoring according to an embodiment of the present invention.

[0027] Figure 5B This is a second structural schematic diagram of the ball bin of the detector throwing device for performing nuclear and radiation environment monitoring according to an embodiment of the present invention.

[0028] Among them, 1-ball bin shell; 2-ball bin; 3-crank; 4-bin top; 5-motor fixing bracket; 6-stepping motor; 7-first bearing; 8-detector; 9-motor control shell; 10-motor controller; 11-power supply; 12-driver; 13-second bearing; 14-detector delivery hole. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0030] like Figures 1 to 5B The detector throwing device for performing nuclear and radiation environment monitoring shown includes a detector, a ball chamber housing 1, a ball chamber 2, a crank 3, a chamber top 4, a motor fixing bracket 5, a stepper motor 6, a first bearing 7 and a second bearing 13, a detector 8, a motor control housing 9, a motor controller 10, a power supply 11 and a driver 12;

[0031] The silo top is fixed to the ball silo shell, and a accommodating space is formed by the silo top and the ball silo shell. The ball silo is arranged in the accommodating space. The ball silo is provided with a plurality of detector placement holes to form a plurality of detector placement positions. The detector is a detection ball. The detection ball is placed in the detector placement hole and supported by the ball silo shell. The stepper motor is fixed to the silo top 4 through the motor fixing bracket 5. The output shaft of the stepper motor is connected to the first end of the crank, and the second end of the crank contacts the ball silo. The movement of the motor drives the movement of the crank, thereby driving the ball silo to rotate.

[0032] The ball silo housing includes a bottom and sidewalls. First fastener mounting holes are provided at the tops of the sidewalls. Preferably, the first fastener mounting holes are evenly spaced along the tops of the sidewalls. A silo roof 4 is secured to the silo housing, for example, to the top of silo housing 1, via fasteners, such as bolts. The silo housing and roof define a receiving space within which the ball silo is positioned.

[0033] Preferably, the number of the first fastener mounting holes is six. Accordingly, the silo roof is provided with second fastener mounting holes. After the first fastener mounting holes are aligned with the second fastener mounting holes, fasteners, such as bolts, are used to secure the silo roof to the silo housing. The number of the second fastener mounting holes is six.

[0034] A detector delivery hole is provided at the bottom of the ball bin shell, through which the detector is released.

[0035] A circular arc groove track is provided at the bottom of the ball warehouse shell; preferably, the circular arc track is provided on the inner bottom surface of the ball warehouse shell; more preferably, the curvature of the circular arc track groove is equal to the curvature of the detection ball, so that the detector can be transported inside the accommodating space.

[0036] Preferably, the height of the arc groove track is 3mm±0.5mm, and the thickness of the bottom of the ball warehouse shell is 10mm.

[0037] The bottom inner surface of the ball silo housing has a first bearing mounting portion, which is located at the center of the bottom inner surface of the ball silo housing. The first bearing mounting portion is a circular protrusion, and the second bearing 13 is placed in the bearing mounting portion. Preferably, a first set screw mounting hole is provided on the side wall of the first bearing mounting portion, and the second bearing is fixed to the first bearing mounting portion by a set screw.

[0038] Specifically, the ball warehouse includes a first rotation support part 21, a turntable 22, a support column 23, and a crank guide part 24.

[0039] The first rotation support of the ball chamber is located below the turntable. Multiple pillars are circumferentially and evenly spaced along the outer wall of the turntable, securing the crank guide. A detector placement hole is provided on the turntable. The first rotation support consists of two parts: a first portion and a second portion.

[0040] The diameter of the first portion of the first rotation support portion is greater than the diameter of the second portion of the first rotation support portion.

[0041] The second portion of the first rotation support is placed within the first bearing mounting portion. Preferably, the height of the second portion of the first rotation support is equal to the height of the first bearing mounting portion. The second portion of the first rotation support extends into the inner ring of the second bearing, thereby providing rotational support for the ball cartridge via the second bearing.

[0042] The ball tank is provided with a plurality of detector placement holes 25, forming a plurality of detector placement positions. When the number of detector placement holes is n, n-1 detectors can be placed. Specifically, the detector placement holes are provided on the turntable of the ball tank. The detector placement holes are evenly spaced along the turntable surface of the ball tank, starting from the center of the ball tank.

[0043] Preferably, with the center of the ball warehouse as the origin, the radius of the circle formed by the centers of each detector placement hole is r1; with the center of the ball warehouse shell as the origin, the radius of the circle where the centers of the detector placement holes are located is r2, then r1=r2.

[0044] Preferably, the center of the arc-shaped track groove, that is, the lowest point of the arc-shaped track groove, lies on a circle with a radius of r3, and then r1 = r2 = r3.

[0045] That is, preferably, the distance d1 between the center of the detector placement hole and the center of the bottom of the ball silo shell is equal to the distance d2 between the center of the detector placement hole and the axis of the ball silo. Preferably, the axis of the ball silo coincides with the axis of the ball silo shell.

[0046] Preferably, the center of the detector delivery hole is located at the center of the arc groove track.

[0047] The turntable of the ball bin is parallel to the bottom of the ball bin shell. Pillars are provided on the outer side wall of the turntable. Preferably, the number of the pillars is equal to the number of detector placement holes. The first end of the pillar is located on the outer side wall of the turntable, and the second end of the pillar is provided with a crank guide portion, which is provided on the inner side wall of the pillar, and the body of the crank guide portion faces the center of the turntable. The width of the pillar is smaller than the width of the crank guide portion, which can reduce the weight of the entire device while achieving stable support. The outer side wall of each pillar is arc-shaped, and the outer side wall of each pillar is located on the same circular contour. During the rotation of the ball bin, the outer side wall of the pillar rotates along the inner wall of the ball bin shell. The staggered arrangement of the pillars can also effectively reduce the friction between the ball bin shell and the outer side wall of the pillar.

[0048] The crank guide part is a plate-shaped structure, and the side wall of the crank guide part facing the crank is an arc surface.

[0049] More specifically, the crank guide portion is an arc-shaped baffle, which is located at the outer edge of the ball chamber body when viewed from space. The arc-shaped baffle is connected to the outer edge of the ball chamber body by an extended boss, and the specific position corresponds to each detector placement hole. The crank guide portion is configured to cooperate with the crank to guide the crank and prevent the crank from being in a suspended state with poor stability.

[0050] Preferably, the ball warehouse is provided with six detector placement holes, and the number of the detector delivery hole is one.

[0051] A boss 26 is provided around each detector placement hole to form a crank slide 27 between two adjacent detector placement holes. The crank slide is a groove formed by the diameter of two adjacent bosses, so as to provide a force application point for the crank.

[0052] The outer side wall of the boss includes a first arc surface, a second arc surface, a first side wall and a second side wall.

[0053] Preferably, the first curved surface of the boss and the second curved surface of the boss are arranged opposite each other, and the curvature of the second curved surface of the boss is equal to the curvature of the detector placement hole. The first curved surface of the boss is flush with the outer wall of the turntable, that is, the curvature of the first curved surface of the boss is equal to the curvature of the outer wall of the turntable.

[0054] The first side wall of the boss and the second side wall of the boss are arranged opposite to each other, and the first side wall of the boss connects the first curved surface of the boss and the second curved surface of the boss. The second side wall of the boss connects the first curved surface of the boss and the second curved surface of the boss. The first side wall of the boss and the second side wall of the boss are flat.

[0055] Preferably, a fillet is provided at the connection between the first arc surface of the boss and the first side wall of the boss, and a fillet is provided at the connection between the first arc surface of the boss and the second side wall of the boss to prevent the crank from getting stuck during the return stroke.

[0056] The distance d3 between the first side wall of the boss and the second side wall of the boss increases gradually from the inside to the outside along the radius of the turntable. The width of the straight section of the crank slot formed by two adjacent bosses is equal.

[0057] The inlet of the crank rail is arranged in an arc shape, and its size is larger than the width of the crank rail, so that the lower part of the crank can slide into the crank rail smoothly and connect smoothly.

[0058] Preferably, a circular groove is provided at the center of the upper surface of the disc, with the inner wall of the groove coinciding with the circular contour line formed by the top of the first curved surface of the boss. When the crank enters the circular groove from the crank rail, the bottom of the crank does not contact the turntable, effectively reducing friction between the crank and the upper surface of the turntable. If friction exists between the two, operating efficiency will be reduced.

[0059] Preferably, the height of the boss is 8-15 mm to prevent the crank from jumping.

[0060] like Figure 4 As shown, crank 3 includes a motor connection portion 31, a balancing device 32, a connection portion 33, and a guide column 34. The motor connection portion is provided with a motor shaft connection hole, the length of which is less than the length of the motor connection portion along its own axis. The motor shaft connection hole includes a first portion and a second portion. The first portion of the motor shaft connection hole is a circular shaft hole, and the second portion of the motor shaft connection hole is a D-shaped shaft hole, which is located below the circular shaft hole.

[0061] Assuming the distance of the center of the detection ball is d, the distance between the turntable and the bottom surface of the ball bin shell is d / 2-d. A balancing device is provided on the outer side of the motor connection part, and the balancing device is a fan-shaped structure. When the ball bin is working, the balancing device is tangent to the arc-shaped baffle of the ball bin 2. The guide column is cylindrical, and the guide column is connected to the motor connection part through the connection part. The guide column and the motor connection part are respectively located at the two ends of the connection part and in opposite directions, that is, the motor connection part is located above the connection part, and the guide column is located below the connection part. The guide column cooperates with the crank slide of the ball bin to drive the ball bin to move. Preferably, the spacing of the straight section of the crank slide is the diameter of the guide column ±0.5mm.

[0062] The connecting portion of the crank and the balancing device of the crank are arranged relatively along the motor connecting portion of the crank, and the connecting position of the balancing device and the motor connecting portion is higher than the height of the connecting portion and the motor connecting portion.

[0063] Preferably, a second set screw hole is provided on the side wall of the motor connection portion. There are three second set screw holes, one of which is provided toward the balancing device, and the other two set screw holes are provided on either side of the second set screw hole. No second set screw hole is provided toward the connection portion.

[0064] The movement of the motor drives the crank to move, and after the guide column enters the crank slide rail, it drives the ball bin to rotate.

[0065] Preferably, the silo top 4 is provided with a crank hole and a bearing hole, wherein the crank hole is a through hole. The upper part of the crank, for example, the motor connecting part of the crank extends out of the silo top from the crank hole, and the output shaft of the motor extends into the motor shaft connecting hole of the crank.

[0066] The silo roof is also equipped with a countersunk bearing hole to support the first bearing. The bearing hole coincides with the centerline of the crankshaft hole. A first bearing 7 is located within the bearing hole, and the crankshaft's motor connection is rotatably supported by the inner ring of the first bearing. Preferably, an interference fit is employed between the first bearing and the bearing hole, eliminating the need for a set screw and conserving space for the screw's installation.

[0067] The second set screw mounting hole, after being installed, secures the screw in place, preventing the crank from sinking. Here, three circumferentially arranged screws engage the upper edge of the inner ring of the first bearing, providing support through the first bearing. The crank is secured through the crank hole, bearing, and screw holes. After the first bearing is installed in the bearing hole, its upper edge is elevated above the upper surface of the silo roof. A groove is provided at the bottom of the motor mount 5 to further secure the first bearing.

[0068] The motor is secured to the roof of the silo, for example, to its upper surface, via a motor mount 5. A stepper motor 6 drives the entire device; its output shaft is connected to the crank. The end of the motor output shaft is D-shaped and extends into the motor connection hole in the crank.

[0069] The motor fixing bracket has a bottom flange 54, on which a third fastener connection hole 51 is provided. Accordingly, a fourth connection hole corresponding to the third fastener connection hole is provided on the top of the silo. After the third fastener connection hole is aligned with the fourth fastener connection hole, the motor fixing bracket is fixed to the top of the silo by fasteners, such as bolts.

[0070] Preferably, a circular groove 52 is provided at the bottom of the motor mount, with its centerline coinciding with the centerline of the bearing hole. After the motor mount is attached to the silo roof, the portion of the first bearing that is above the silo roof rests within this circular groove, further securing the first bearing. A rubber gasket is placed in the circular groove 52 at the bottom of the motor mount.

[0071] A square bracket 55 is provided on the upper portion of the motor mounting bracket, and motor mounting holes 53 are provided at the four corners of the square bracket. Fasteners are screwed into the holes to fix the motor to the motor mounting bracket.

[0072] A through hole is provided in the center of the motor mount to provide space for mounting the motor output shaft and the motor connection portion of the crank. Preferably, the diameter of the through hole is greater than the side length of the inner sidewall of the square bracket. Preferably, the diameter of the through hole is less than the diameter of the circular groove at the bottom of the motor mount.

[0073] The stepper motor is connected to a power supply 11 via a cable. The stepper motor is also connected to a motor controller 10 via a cable. The motor controller is a remote control module that can be remotely controlled within a range of 1000m to 3000m.

[0074] The power supply 11 is connected to the driver 12, the driver 12 is connected to the motor 6, and the power supply 11 is connected to the motor controller 10. More specifically, the positive pole of the power supply is connected to the DC voltage pin interface of the driver, and the negative pole of the power supply is connected to the ground pin interface of the driver. The DC power supply pin DC+ of the motor controller is connected to the DC voltage pin interface of the driver, and the DC power supply pin DC- of the motor controller is connected to the ground pin interface of the driver. The four red, blue, green, and black wires of the stepper motor are respectively connected to the four pin interfaces of the driver A+, driver A-, driver B+, and driver B-. The driver adopts common cathode wiring. The pulse pin PUL-, direction pin DIR-, and floating pin ENA- are connected in parallel and connected to the ground pin of the motor controller. The other three pins PUL+, DIR+, and ENA+ are respectively connected to the corresponding pins DC+, DIR, and EN of the motor controller to control the rotation of the stepper motor.

[0075] More specifically, the DC voltage pin interface of the driver is +Vdc, the ground pin interface of the driver is GND, the DC voltage pin interface of the driver is +Vdc, the ground pin interface of the driver is GND, and the ground pin of the motor controller is GND.

[0076] The remote control sends commands to the motor controller. Driver 12 converts the pulse signals from motor controller 10 into angular displacement and transmits it to stepper motor 6, driving the ball tank. The motor controller adjusts the rotation speed, and the motor rotation angle is adjusted by the pulses from the motor controller. This device is configured to send forward / reverse commands from the remote control, causing the stepper motor to rotate 360° forward or reverse and then automatically stop. The operator can control the rest period, allowing repeated operation to achieve multiple casting tasks.

[0077] The motor controller 10, power supply 11 and driver 12 cooperate to control the stepper motor. All three are fixed in the motor controller housing 9 by fasteners, such as bolts, and the shock absorption function is achieved through the motor controller housing.

[0078] The outer shell of the detection ball is a spherical shell structure, which includes a detector shell, an information transmission module 300 and a sensor module 400. The information transmission module and the sensor module communicate via a serial port, and the radiation dose in the environment is detected through the sensor module 400.

[0079] The detector shell includes two parts, a first half shell 100 and a second half shell 200. Fasteners, such as bolts, are used between the first half shell 100 and the second half shell 200. Fasteners, such as bolts, are also used between the information transmission module 300 and the second half shell 200. The sensor module 400 is fixed inside the first half shell 100 by a cable tie.

[0080] More specifically, the inner sidewall of the second half shell is provided with an information transmission module fixing portion, which is bolted to the information transmission module fixing portion. The inner wall of the first half shell is provided with a sensor module, which is fixed to a sensor connection portion within the first half shell via a cable tie. The sensor connection portion is provided with a connection hole. Preferably, locking noses for fixing the cable tie are provided on all four vertical sidewalls of the first half shell 100.

[0081] The second half shell and the first half shell are both provided with a connecting portion, and the connecting portion of the first half shell and the connecting portion of the second half shell are connected by fasteners. Preferably, the connecting portion of the second half shell is an inward flange, and the flange is provided with a mounting hole. The connecting portion of the first half shell is a connecting block extending into the interior of the first spherical shell, and the connecting block is provided with a threaded hole. The side wall of the second half shell is provided with a mounting opening. During assembly, the mounting hole on the flange of the second half shell is aligned with the threaded hole on the connecting block of the first half shell. A fastener, such as a bolt, is introduced into the interior of the second half shell through the mounting opening, passed through the mounting hole, and then screwed into the threaded hole to achieve the fixation of the split spherical shell. Preferably, the mounting opening is provided at a position corresponding to the mounting hole on the flange.

[0082] The spherical shell is a closed structure. The outer shell can be divided into a detector top and a detector bottom, which are connected by fasteners, such as bolts. The sensor module is fixed to the detector bottom. Preferably, the sensor module is fixed to the detector bottom by a rolled belt. The information transmission module 300 is fixed to the detector top. Preferably, the information transmission module is fixed to the detector top by bolts.

[0083] The sensing distance of the detection ball is the distance at which the sensor module can receive data.

[0084] Wireless transmission is achieved through the information transmission module 300, for example, transmission to the PC via lora.

[0085] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art should understand that they may modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents; and such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the various embodiments of the present invention.

[0086] In the description of the present invention, it should be noted that the terms "upper" and "lower" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0087] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to connections between the internal parts of two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "at least three" means two or more.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A detector throwing device for performing nuclear and radiation environment monitoring, characterized in that: The invention comprises a detector, a ball bin shell, a ball bin, a crank, a bin top, a motor fixing bracket, a stepping motor, a first bearing, a second bearing and a detector; the bin top is fixed to the ball bin shell, and a receiving space is formed by the bin top and the ball bin shell, the inner side of the bottom surface of the ball bin shell is provided with a first bearing mounting portion, and the second bearing is placed in the first bearing mounting portion; the lower part of the ball bin is placed on the inner ring of the second bearing, and the ball bin rotates around the center of the ball bin in the receiving space; the ball bin is provided with a plurality of detector placement holes to form a plurality of detector placement positions, and the detector is a detection ball, which is placed in the detector placement hole and supported by the ball bin shell; a boss is provided on the edge of the detector placement hole, and a crank slide rail is formed between two adjacent detector placement holes. The crank slide is a groove formed by the diameter of two adjacent bosses, which is arranged so as to provide a force point for the crank; the stepper motor is fixed to the top of the warehouse through a motor fixing frame, and the top of the warehouse is provided with a bearing hole for accommodating the first bearing and a crank hole coaxial with the bearing hole. The first bearing is interference fit with the bearing hole. After the upper part of the crank extends out of the bearing hole, it is supported by the first bearing for rotation. The output shaft of the stepper motor is connected to the first end of the crank, and the movement of the stepper motor drives the movement of the crank. A detector delivery hole is provided at the bottom of the ball warehouse shell, and the detector is released through the detector delivery hole. The ball warehouse is provided with multiple detector placement holes to form multiple detector placement positions. When the number of detector delivery holes is n, n-1 detectors can be delivered.

2. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 1, characterized in that: It also includes a motor control housing, a motor controller, a power supply and a driver; the stepper motor is connected to the power supply via a cable, the stepper motor is connected to the motor controller via a cable, the power supply is connected to the driver, the driver is connected to the stepper motor, and the power supply is connected to the motor controller; the driver converts the pulse signal of the motor controller into angular displacement and transmits it to the stepper motor to achieve drive.

3. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 2, characterized in that: The bottom of the ball warehouse shell is provided with an arc groove track, which facilitates the transportation of the detector inside the accommodation space.

4. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 3, characterized in that: The ball bin includes a first rotation support portion, a turntable, a support column and a crank guide portion.

5. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 4, characterized in that: The detector placement holes are evenly arranged at equal intervals along the turntable surface of the ball warehouse with the center of the ball warehouse.

6. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 5, characterized in that: During the rotation of the ball bin, the outer side walls of the pillars rotate along the inner wall of the ball bin shell, and the pillars are arranged at intervals along the circumferential direction of the outer side wall of the turntable.

7. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 6, characterized in that: The crank guide portion is an arc-shaped baffle; the crank guide portion is configured to cooperate with the crank to achieve crank guidance.

8. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 7, characterized in that: A circular groove is set in the center of the upper surface of the disc, and the contour of the inner wall of the circular groove coincides with the circular contour line formed by the top of the first arc surface of the boss; when the crank enters the circular groove area from the crank slide rail, the bottom of the crank does not contact the turntable, effectively reducing the friction between the crank and the upper surface of the turntable.

9. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 8, characterized in that: The crank includes a motor connection part, a balancing device, a connection part and a guide column; the balancing device is provided on the outer side of the motor connection part, the guide column is connected to the motor connection part through the connection part, the guide column and the motor connection part are respectively located at the two ends of the connection part, and the guide column cooperates with the crank slide rail of the ball bin to drive the ball bin to move.

10. The detector throwing device for performing nuclear and radiation environment monitoring according to claim 9, characterized in that: After the first bearing is installed in the bearing hole, the upper edge of the first bearing is higher than the upper surface of the warehouse top; a groove is provided at the bottom of the motor fixing frame, and the first bearing is further limited by the groove.

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