Waste driving mechanism, driving method and driving device based on radioactive environment

Abstract

The invention provides a waste driving mechanism based on a radioactive environment, a driving method and a driving device, the driving mechanism comprises a movable base, a roller path is arranged on the movable base, and a roller containing radioactive waste is used for being placed on the roller path; a first driving mechanism and a second driving mechanism are arranged on the two opposite sides of the roller path, and the first driving mechanism and the second driving mechanism are installed on the movable base; and at least one of the first driving mechanism and the second driving mechanism is connected with the roller path so as to drive the roller on the roller path to move to a target placement position. According to the waste driving mechanism based on the radioactive environment, the first driving mechanism and the second driving mechanism form a redundant design, when one of the driving mechanisms breaks down, the other driving mechanism can drive the roller path, normal conveying of the roller cannot be affected, the probability that workers enter a radiation area is reduced, and the safety of waste transfer is improved.

Description

Technical Field

[0001] The invention relates to the technical field of radioactive waste transportation in nuclear power plants, and in particular to a waste driving mechanism, a driving method and a driving device based on a radioactive environment. Background Art

[0002] Radioactive waste from nuclear power plants is generally transported by remote control using roller conveyors. Special attention should be paid to the safety of waste transportation and the maintainability of the equipment.

[0003] When a component of a traditional transfer mechanism fails, it will affect the efficiency of radioactive waste transfer, and the maintenance process of the equipment will cause unnecessary and fatal radiation damage to personnel. That is, when a traditional transfer mechanism fails, on the one hand, it affects the efficiency of radioactive waste transfer, and on the other hand, it increases the radiation exposure of the staff.

[0004] Based on this, the inventor of the present application proposes a waste driving mechanism, a driving method and a driving device based on a radioactive environment, in order to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of low efficiency and poor safety of the transfer mechanism in the prior art for transferring radioactive waste, and to provide a waste driving mechanism, driving method and driving device based on a radioactive environment.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] The present invention provides a waste driving mechanism based on a radioactive environment, which is characterized by comprising:

[0008] A movable base having a roller track on which a roller containing radioactive waste is placed;

[0009] A first driving mechanism and a second driving mechanism are provided on opposite sides of the rolling track, and the first driving mechanism and the second driving mechanism are installed on the movable base; wherein,

[0010] At least one of the first driving mechanism and the second driving mechanism is connected to the rolling track to drive the roller on the rolling track to move to a target placement position.

[0011] According to an embodiment of the present invention, the first driving mechanism and the second driving mechanism operate independently of each other.

[0012] According to one embodiment of the present invention, the raceway comprises a plurality of rollers arranged at intervals, and first sprockets and second sprockets arranged at intervals are respectively arranged at opposite ends of the rollers;

[0013] The same side of the adjacent rollers is cross-connected with the first sprocket or the second sprocket through a matching chain.

[0014] According to an embodiment of the present invention, two of the first sprockets are connected between adjacent rollers via the matching chain, and each of the second sprockets is connected to the second sprocket of the roller adjacent to the opposite side.

[0015] According to an embodiment of the present invention, the first driving mechanism and the second driving mechanism both include a driving motor, a connecting sprocket and a connecting chain, and the connecting sprocket is sleeved on the output shaft of the driving motor;

[0016] One end of the connecting chain is sleeved on the connecting sprocket, and the other end is sleeved on the first sprocket or the second sprocket of the roller located at the end.

[0017] According to an embodiment of the present invention, the movable base is provided with support plates on opposite sides of the rolling track, and the driving motor is mounted on the support plates.

[0018] According to an embodiment of the present invention, the first driving mechanism and the second driving mechanism further include a driving unit, one end of which is detachably mounted on the movable base;

[0019] The driving unit is electrically connected to the driving motor.

[0020] According to an embodiment of the present invention, the support plate includes two support units that are spaced apart from each other, a matching space is formed between the two support units, and the driving unit is inserted into the matching space.

[0021] According to one embodiment of the present invention, the movable base is provided with a positioning mechanism above the rolling track, and the positioning mechanism is used to monitor the position of the roller on the rolling track;

[0022] The movable base is also provided with two lifting buckles, and the two lifting buckles are located on opposite sides of the positioning mechanism;

[0023] One end of the lifting buckle is connected to the movable base, and the other end rises above the roller track and clamps the roller when the roller reaches the target placement position, and is retracted below the roller track when the roller does not reach the target placement position.

[0024] The present invention also provides a driving device based on a radioactive environment, which is characterized in that it includes: the waste driving mechanism based on a radioactive environment as described above.

[0025] The present invention also provides a driving method for a waste driving mechanism in a radioactive environment, using the waste driving mechanism in a radioactive environment as described above, the driving method comprises:

[0026] receiving operation signals of a first driving mechanism and a second driving mechanism, and selecting one of the first driving mechanism and the second driving mechanism that operates normally as a target driving unit;

[0027] Turning on the target drive unit to drive the roller placed on the roller track;

[0028] After receiving the signal that the roller has reached the target placement position, the lifting buckle is raised to form a clamping limit for the roller.

[0029] The positive and progressive effects of the present invention are:

[0030] The present invention is based on a waste driving mechanism in a radioactive environment, and a roller is arranged on a movable base. The roller containing radioactive waste can be transported to a target placement position in cooperation with a first driving mechanism and a second driving mechanism. The first driving mechanism and the second driving mechanism can drive the roller independently or in cooperation with each other. In this way, even if one of the first driving mechanism and the second driving mechanism fails, the other can still drive the roller, thereby not affecting the normal transportation of the roller, reducing the probability of staff entering the radiation area, and improving the safety of waste transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0032] Figure 1 It is a schematic structural diagram of a waste driving mechanism in a radioactive environment according to the present invention from one angle;

[0033] Figure 2 It is a schematic structural diagram of another angle of the waste driving mechanism of the present invention in a radioactive environment;

[0034] Figure 3 It is a schematic diagram of the cooperation between the first driving mechanism or the second driving mechanism and the roller of the present invention;

[0035] Figure 4 The figure is a flow chart of a driving method of a waste driving mechanism in a radioactive environment according to the present invention.

[0036] 1. movable base; 11. raceway; 12. roller; 13. first sprocket; 14. second sprocket; 15. matching chain; 16. support plate; 161. support unit; 162. matching space; 17. positioning mechanism; 18. lifting buckle;

[0037] 2. Roller;

[0038] 31. First driving mechanism; 32. Second driving mechanism; 33. Driving motor; 34. Connecting sprocket; 35. Connecting chain; 36. Driving unit. DETAILED DESCRIPTION

[0039] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0041] Please refer to Figures 1 to 3 The present invention proposes a waste driving mechanism based on a radioactive environment, comprising a movable base 1, on which a roller 2 containing radioactive waste is placed. The movable base 1 can be, but is not limited to, an AGV trolley, and the roller 11 is provided for supporting and conveying the roller 2.

[0042] A first driving mechanism 31 and a second driving mechanism 32 are provided on opposite sides of the roller conveyor 11, and the first driving mechanism 31 and the second driving mechanism 32 are installed on the movable base 1; wherein, at least one of the first driving mechanism 31 and the second driving mechanism 32 is connected to the roller conveyor 11 to drive the roller 2 on the roller conveyor 11 to move to the target placement position.

[0043] The first driving mechanism 31 and the second driving mechanism 32 drive the roller 11 independently, so that when one of the first driving mechanism 31 and the second driving mechanism 32 fails, the other can also work normally to receive the roller 2, thereby improving the conveying efficiency of the roller 2.

[0044] On the one hand, the first drive mechanism 31 and the second drive mechanism 32 form a redundant design to avoid the failure of one of the rollers 2 during the conveying process and affect the overall conveying efficiency; on the other hand, the design of the raceway 11 can replace the transport starting position and end position of the roller 2 as needed.

[0045] Moreover, the roller 11 can not only transport and support the roller 2, but also serve as a platform for supporting staff or equipment to place staff or other equipment to be transported, so that the roller 11 has higher versatility.

[0046] It should be noted that the two opposite ends of the raceway 11 are two points. By adjusting the driving directions of the first driving mechanism 31 and the second driving mechanism 32, the two points can be switched between the starting position and the end position to adapt to receiving rollers 2 in different positions and orientations.

[0047] In one embodiment, the first driving mechanism 31 and the second driving mechanism 32 can operate together, and when one of them fails, the other can also drive the pipeline to operate normally.

[0048] Alternatively, in some other embodiments, the first drive mechanism 31 and the second drive mechanism 32 may also operate independently of each other. When one of them fails, the operation is switched to the other one. Both methods are acceptable and are not limited here.

[0049] Please refer to Figure 1 and Figure 3 The raceway 11 includes a plurality of rollers 12 arranged at intervals, and first sprockets 13 and second sprockets 14 arranged at intervals are respectively arranged at opposite ends of the rollers 12; adjacent rollers 12 are cross-connected with the first sprocket 13 or the second sprocket 14 on the same side through a matching chain 15.

[0050] Because the first driving mechanism 31 and the second driving mechanism 32 are provided, the first sprocket 13 and the second sprocket 14 are provided on opposite sides of the drum 12 respectively, and the first driving mechanism 31 and the second driving mechanism 32 can drive the first sprocket 13 and the second sprocket 14 on the corresponding side, thereby driving the raceway 11 to operate.

[0051] Specifically, two first sprockets 13 are connected between adjacent rollers 12 via a matching chain 15 , and each second sprocket 14 is connected to the second sprocket 14 of the roller 12 adjacent to the opposite side.

[0052] Take three rollers 12 as an example, namely the first roller 12, the second roller 12 and the third roller 12, the second roller 12 is located between the first roller 12 and the third roller 12, the second roller 12 is connected to the first roller 12 through a matching chain 15 to connect the first sprocket 13 of the two rollers, the second roller 12 is connected to the third roller 12 through a matching chain 15 to connect the second sprocket 14 of the two rollers; the second sprocket 14 of the first roller 12 is connected to the second sprocket 14 of the adjacent roller 12 on the side away from the second roller 12 through a matching chain 15; similarly, the first sprocket 13 of the third roller 12 is connected to the first sprocket 13 of the adjacent roller 12 on the side away from the second roller 12 through a matching chain 15. The multiple rollers 12 are arranged in a circular cross-connected manner as above.

[0053] Please refer to Figure 1 and Figure 3 The first driving mechanism 31 and the second driving mechanism 32 both include a driving motor 33, a connecting sprocket 34 and a connecting chain 35. The connecting sprocket 34 is sleeved on the output shaft of the driving motor 33; one end of the connecting chain 35 is sleeved on the connecting sprocket 34, and the other end is sleeved on the first sprocket 13 or the second sprocket 14 of the roller 12 located at the end.

[0054] Taking the first driving mechanism 31 as an example, when receiving the roller 2, the driving motor 33 is started, and the driving motor 33 rotates to drive the connecting chain 35 to rotate, thereby driving the roller 12 at the end to rotate, and the roller 12 at the end drives the adjacent roller 12 to rotate through the matching chain 15, so as to receive the roller 2 and convey the roller 2 to the target placement position.

[0055] The operating principle of the second drive mechanism 32 is the same as that of the first drive mechanism 31, which will not be described in detail. It can be seen that in the initial stage, the first drive mechanism 31 and the second drive mechanism 32 are pre-started to determine the operating status of the two. If one of them fails, the other can be selected to drive the roller 11.

[0056] In one embodiment, the movable base 1 is provided with support plates 16 on two opposite sides of the rolling track 11 , and the driving motor 33 is mounted on the support plates 16 .

[0057] The driving motor 33 can be installed on the support plate 16 by means of a threaded connector, or by means of a snap or other feasible manner, which is not limited here.

[0058] Specifically, the first driving mechanism 31 and the second driving mechanism 32 further include a driving unit 36 ​​, one end of which is detachably mounted on the movable base 1 ; the driving unit 36 ​​is electrically connected to the driving motor 33 .

[0059] Optionally, the driving unit 36 ​​is a battery pack, which is inserted into the movable base 1 and is used to supply power to the driving motor 33 .

[0060] It can be seen that there are also devices in the movable base 1 that need power supply, for example, the drive of the movable base 1 itself needs power supply, and the controller provided therein also needs power supply.

[0061] The first driving mechanism 31 and the second driving mechanism 32 are each provided with a battery pack. Thus, when the driving motor 33 of the first driving mechanism 31 or the second driving mechanism 32 fails, the other battery pack can also supply power to the roller conveyor 11 and the movable base 1, thereby avoiding the probability of workers entering the irradiation area and improving the waste transfer capacity and safety.

[0062] Specifically, the support plate 16 includes two support units 161 that are spaced apart from each other, a matching space 162 is formed between the two support units 161 , and the driving unit 36 ​​is inserted into the matching space 162 .

[0063] The two support units 161 are used to clamp the drive unit 36 ​​to improve the installation stability of the drive unit 36. For example, a clamping slot can be provided on the movable base 1, and the drive unit 36 ​​is clamped in the clamping slot and connected to the drive motor 33 and other devices of the movable base 1 that need power supply.

[0064] As for the clamping method of the driving unit 36 ​​, a clamping slot is taken as an example here, but it is not limited thereto.

[0065] Please refer to Figure 2 and Figure 3 The movable base 1 is provided with a positioning mechanism 17 above the roller 11, and the positioning mechanism 17 is used to monitor the position of the roller 2 on the roller 11; the movable base 1 is also provided with two lifting buckles 18, and the two lifting buckles 18 are located on opposite sides of the positioning mechanism 17; one end of the lifting buckle 18 is connected to the movable base 1, and the other end rises to the top of the roller 11 and clamps the roller 2 when the roller 2 reaches the target placement position, and is retracted to the bottom of the roller 11 when the roller 2 does not reach the target placement position.

[0066] The positioning mechanism 17 can be a photoelectric sensor, a distance sensor, etc., which is not limited here. Here, the photoelectric sensor is used as an example for explanation. For example, when the roller 12 reaches the target placement position, the photoelectric sensor obtains a signal and sends the signal to the controller. The controller sends a stop signal to the drive motor 33 that provides power to the roller 11, so that the roller 11 stops rotating, so that the roller 12 stops at the target placement position. Afterwards, the controller sends a signal to the lifting buckle 18, so that the lifting buckle 18 rises to form a clamping position for the roller 12.

[0067] That is, when the movable base 1 reaches the receiving position of the roller 2, the first driving mechanism 31 or the second driving mechanism 32 is operated first, and then the roller 2 is moved toward the target placement position until the roller 2 reaches the target placement position. After that, after the lifting buckle 18 limits the position of the roller 2, the movable base 1 transports the roller 2 to the position for receiving the roller 2.

[0068] When the roller 12 does not trigger the photoelectric sensor, the lifting buckle 18 is always retracted under the raceway 11 .

[0069] Optionally, the bottom of the lifting buckle 18 is a hydraulic cylinder or a feasible linear drive mechanism, and the controller is connected to the hydraulic cylinder or the linear drive mechanism to control the lifting and lowering of the lifting buckle 18, thereby clamping or releasing the roller 12.

[0070] The present invention also provides a driving device based on a radioactive environment, comprising the above-mentioned waste driving mechanism based on a radioactive environment.

[0071] Because it is in a radioactive environment, the drive device is also equipped with other mechanisms such as a shielding mechanism and a control mechanism, which are not limited here.

[0072] In summary, the present invention sets a roller 11 on the movable base 1, which can transport the roller 2 containing radioactive waste to the target placement position in cooperation with the first driving mechanism 31 and the second driving mechanism 32. The first driving mechanism 31 and the second driving mechanism 32 can drive the roller 11 independently or in cooperation with each other. In this way, even if one of the first driving mechanism 31 and the second driving mechanism 32 fails, the other can also drive the roller 11, which will not affect the normal transportation of the roller 2, and reduce the probability of staff entering the radiation area, thereby improving the safety of waste transportation.

[0073] Please refer to Figure 4 The present invention also proposes a driving method for a waste driving mechanism in a radioactive environment. The driving method adopts the above waste driving mechanism in a radioactive environment, and includes:

[0074] S1. Receive operation signals of a first driving mechanism and a second driving mechanism, and select one of the first driving mechanism and the second driving mechanism that operates normally as a target driving unit.

[0075] S2. Turn on the target drive unit to drive the roller placed on the raceway.

[0076] S3. After receiving a signal indicating that the roller has reached the target placement position, the lifting buckle is raised to form a clamping limit for the roller.

[0077] In the driving method provided by the present invention, since the first driving mechanism and the second driving mechanism constitute a redundant design, the controller can switch to the other to drive the roller when one fails, thereby improving the reliability and safety of roller transportation.

[0078] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "install", "connect", "connect", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0079] The present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or multiple times in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0080] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A waste driving mechanism based on a radioactive environment, characterized in that: include: A movable base having a roller track on which a roller containing radioactive waste is placed; A first driving mechanism and a second driving mechanism are provided on opposite sides of the rolling track, and the first driving mechanism and the second driving mechanism are installed on the movable base; wherein, At least one of the first driving mechanism and the second driving mechanism is connected to the rolling track to drive the roller on the rolling track to move to a target placement position.

2. The waste driving mechanism in a radioactive environment according to claim 1, characterized in that: The first drive mechanism and the second drive mechanism operate independently of each other.

3. The waste driving mechanism in a radioactive environment according to claim 1, characterized in that: The raceway comprises a plurality of rollers arranged at intervals, and first sprockets and second sprockets arranged at intervals are respectively arranged at opposite ends of the rollers; The same side of the adjacent rollers is cross-connected with the first sprocket or the second sprocket through a matching chain.

4. The waste driving mechanism in a radioactive environment according to claim 3, characterized in that: The two first sprockets between the adjacent rollers are connected by the matching chain, and the second sprockets of each other are connected to the second sprockets of the adjacent rollers on the opposite side.

5. The waste driving mechanism in a radioactive environment according to claim 3, characterized in that: The first driving mechanism and the second driving mechanism both include a driving motor, a connecting sprocket and a connecting chain, wherein the connecting sprocket is sleeved on the output shaft of the driving motor; One end of the connecting chain is sleeved on the connecting sprocket, and the other end is sleeved on the first sprocket or the second sprocket of the roller located at the end.

6. The waste driving mechanism in a radioactive environment according to claim 5, characterized in that: The movable base is provided with support plates on opposite sides of the rolling track, and the driving motor is installed on the support plates.

7. The waste driving mechanism in a radioactive environment according to claim 6, characterized in that: The first driving mechanism and the second driving mechanism further include a driving unit, one end of which is detachably mounted on the movable base; The driving unit is electrically connected to the driving motor.

8. The waste driving mechanism in a radioactive environment according to claim 7, characterized in that: The support plate includes two support units that are spaced apart from each other, a matching space is formed between the two support units, and the driving unit is inserted into the matching space.

9. The waste driving mechanism in a radioactive environment according to claim 1, characterized in that: The movable base is provided with a positioning mechanism above the rolling track, and the positioning mechanism is used to monitor the position of the roller on the rolling track; The movable base is also provided with two lifting buckles, and the two lifting buckles are located on opposite sides of the positioning mechanism; One end of the lifting buckle is connected to the movable base, and the other end rises above the roller track and clamps the roller when the roller reaches the target placement position, and is retracted below the roller track when the roller does not reach the target placement position.

10. A driving device based on a radioactive environment, characterized in that: include: A waste driving mechanism in a radioactive environment as described in any one of claims 1 to 9.

11. A method for driving a waste driving mechanism in a radioactive environment, characterized in that: Using the waste driving mechanism based on a radioactive environment as described in any one of claims 1 to 9, the driving method comprises: receiving operation signals of a first driving mechanism and a second driving mechanism, and selecting one of the first driving mechanism and the second driving mechanism that operates normally as a target driving unit; Turning on the target drive unit to drive the roller placed on the roller track; After receiving the signal that the roller has reached the target placement position, the lifting buckle is raised to form a clamping limit for the roller.

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