CN210103296U - Passive gripping apparatus for isotope production - Google Patents
Passive gripping apparatus for isotope production Download PDFInfo
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- CN210103296U CN210103296U CN201920692086.7U CN201920692086U CN210103296U CN 210103296 U CN210103296 U CN 210103296U CN 201920692086 U CN201920692086 U CN 201920692086U CN 210103296 U CN210103296 U CN 210103296U
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Abstract
The utility model discloses a passive gripping apparatus for isotope production, which mainly comprises a driving part and a gripping part, wherein the driving part comprises a steel cable quick joint 1, an end cover 2, a bearing 3, an outer cylinder 4 and a mandrel 5, the inner ring of the bearing 3 is sleeved on the steel cable quick joint 1, the mandrel 5 is connected with the steel cable quick joint 1, the outer ring of the bearing 3 is connected with the outer cylinder 4, and the end cover 2 is connected with the outer cylinder 4; the grabbing part comprises a bearing nut 6, a hump shaft 7 and a grabbing hook 8, the bearing nut 6 is connected with the hump shaft 7, the grabbing hook 8 is connected with the hump shaft 7 in a hinged mode, and the grabbing hook 8 can swing around a hinged point; when the driving part completes up-and-down movement once, the guide post 46 can complete position switching once in the hump groove 71, meanwhile, the mandrel 5 also completes axial position switching once, and the mandrel 5 drives the grabbing hook 8 to open or close so as to grab or release the target.
Description
Technical Field
The utility model relates to an isotope production in-process target piece snatchs technical field, especially relates to a passive gripping apparatus for isotope production.
Background
Radioisotopes have been widely used in a variety of fields such as industry, agriculture, medicine, environmental protection, military, resource exploration, and scientific research. Currently, there are three general approaches to the production of artificial radioisotopes: isotopes produced by nuclear reactors, called nuclear irradiation isotopes; isotopes produced using charged particle accelerators, referred to as accelerator isotopes; isotopes extracted from nuclear fuel reprocessing effluents are referred to as fragmented isotopes. The isotope produced by the reactor has the characteristics of large yield, large variety quantity, low production cost and the like, and is the most main mode for producing the isotope at present.
The main production process of the pile-up isotope is that the target piece enters an irradiation area through an irradiation pore canal with the depth of 8m, is extracted after irradiation for a specified time, and enters a receiving chamber through a receiving pore canal with the depth of 16m for receiving. The target piece in-out hole channel and the grabbing in the transferring process are completed by the gripping apparatus. The use environment of the gripping apparatus is radioactive environment, which is not convenient for people to enter, therefore, the safe and efficient gripping and releasing of the target, falling prevention and quick replacement of the gripping apparatus are very important. The conventional gripping apparatus is driven pneumatically, electrically or hydraulically, and inevitably has cables or pipelines which are aged and damaged after being irradiated, so that the target piece falls and cannot be normally gripped and released; 200610144995.4 patent discloses a gravity type automatic gripper, which realizes the rotation of an internal rectangular slide block through the self gravity, so that an ejector rod of the gripper generates axial position change, thereby realizing the opening and closing of claws. The rectangular sliding block of the gripping apparatus has an uncontrollable unstable factor of position change, and the opening and closing of the claw are uncontrollable. Meanwhile, the gripper also has the risk that the gripper cannot grip and release due to the fatigue failure of the spring of the force limiter; 201720001853.6 discloses a special gripping apparatus for fuel assembly, which realizes the axial position change of the lower end engagement mechanism through a convex-concave groove and a spring, thereby realizing the opening and closing of the gripping hand. This gripper has the risk that the component being gripped falls because of spring fatigue failure.
To avoid the above risks, we propose a passive gripper for isotope production.
Disclosure of Invention
An automatic ball-point pen is one of the commonly used cultural and literature tools, a hump mechanism is arranged at the upper part of the automatic ball-point pen, and the position of a pen refill is switched once when the automatic ball-point pen is pressed once. The utility model discloses use for the principle of the hump mechanism of automatic ballpoint, propose a passive gripping apparatus for isotope production, realize that target member safety, efficient snatch the release and prevent to fall in the isotope production process. The technical scheme is as follows:
a passive gripping apparatus for isotope production mainly comprises a driving part and a gripping part, wherein the driving part comprises a steel cable quick joint 1, an end cover 2, a bearing 3, an outer cylinder 4 and a mandrel 5, an inner ring of the bearing 3 is sleeved on the steel cable quick joint 1, the mandrel 5 is connected with the steel cable quick joint 1, an outer ring of the bearing 3 is connected with the outer cylinder 4, and the end cover 2 is connected with the outer cylinder 4; the grabbing part comprises a bearing nut 6, a hump shaft 7 and a grabbing hook 8, the bearing nut 6 is connected with the hump shaft 7, the grabbing hook 8 is connected with the hump shaft 7 in a hinged mode, and the grabbing hook 8 can swing around a hinged point.
The steel cable quick connector 1 is positioned at the upper end of the gripping apparatus, so that the gripping apparatus can be quickly replaced.
The bearing nut 6 is positioned at the upper end of the hump shaft 7, is connected in a threaded mode and is mainly used for transmitting force between the hump shaft 7 and the outer barrel 4, so that the guide column 46 is not stressed when a target piece is grabbed and lifted.
The hump shaft 7 is provided with a limit table 73, a contact bottom surface 74, a guide head 75 and a circumferentially surrounding hump groove 71.
The hump groove 71 is composed of a lower groove 72, an upper groove 76 and through grooves 77, the lower groove 72 is continuously arranged, and the upper groove 76 and the through grooves 77 are alternately arranged.
The outer cylinder 4 is provided with a bearing step 41, a bottom surface 42, a lower water discharge hole 43, a middle water discharge hole 44, an upper water discharge hole 45 and a guide column 46.
The lower water discharge hole 43, the middle water discharge hole 44 and the upper water discharge hole 45 on the outer cylinder 4 are all arranged symmetrically.
The guide posts 46 on the outer cylinder 4 are uniformly distributed in three circumferential directions.
The outer barrel 4 is in sliding fit with the outer shaft of the hump shaft 7, and axial sliding and circumferential rotation can be achieved.
The mandrel 5 is in sliding fit with the inner hole of the hump shaft 7, and axial sliding and circumferential rotation can be realized.
The steel cable quick connector 1, the mandrel 5 and the outer cylinder 4 are positioned radially and axially through the bearing 3.
The steel cable quick connector 1, the mandrel 5 and the outer cylinder 4 are coaxial.
The guide post 46 is in clearance fit with the hump groove 71, so that the guide post 46 can slide along the hump groove 71.
The driving part and the grabbing part are in sliding fit, and axial sliding and circumferential rotation can be achieved.
The grapple 8 is arranged symmetrically.
The opening and closing of the grapple 8 are driven by the mandrel 5, and the mechanical self-locking of the position of the grapple 8 when the grapple 8 is opened or closed is realized.
The utility model has the advantages of compared with the prior art:
a passive gripping apparatus for isotope production is characterized in that: the grabbing hook is opened and closed through self gravity, so that the target piece is grabbed and released, and the grabbing tool is connected with the lifting equipment through only one steel wire rope. Compared with the traditional gripping apparatus, the cable or pipeline for providing power for the gripping apparatus is omitted, the using environment of the gripping apparatus is a radioactive environment, and the cable or pipeline for providing power for the traditional gripping apparatus is aged and damaged after being irradiated, so that the target piece falls and the risk that the target piece cannot be normally gripped and released is avoided; compared with other mechanical grippers, the mechanical gripper has no energy storage parts such as springs, and other mechanical grippers have the risk that the gripped objects cannot be normally gripped, released and dropped due to fatigue failure of the energy storage parts such as the springs; the above risks can be avoided by using a non-energy gripper. Meanwhile, the irradiation time of maintenance personnel is reduced, and the passive gripping apparatus is particularly provided with a steel cable quick connecting device, so that the gripping apparatus is convenient to replace.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic structural view of a passive gripper
FIG. 2 is a driving part of a passive gripper in a disassembled structure
FIG. 3 is a schematic view of the grip portion of the passive gripper in a disassembled configuration
FIG. 4 is a flow chart of the grabbing work of the target of the passive grab
FIG. 5 is a flowchart of the passive gripper target release process
The symbols in the drawings represent the following meanings:
1 steel cable quick connection, 2 end covers, 3 bearings, 4 outer cylinders, 5 mandrels, 6 bearing nuts, 7 hump shafts, 8 grapples, 41 bearing steps, 42 bottom surfaces, 43 lower water discharge holes, 44 middle water discharge holes, 45 upper water discharge holes, 46 guide posts, 71 hump grooves, 72 lower grooves, 73 limiting tables, 74 contact bottom surfaces, 75 guide heads, 76 upper grooves and 77 through grooves.
The two-dot chain line parts at the lower parts of the figures 4 and 5 are partial schematic views of the grabbing head of the target.
Detailed Description
The following embodiments are provided to explain the present invention in further detail, but should not be construed as limiting the scope of the present invention to the following embodiments, and all modifications, substitutions and alterations made based on the common technical knowledge and conventional means in the art are included in the scope of the present invention without departing from the technical idea of the present invention.
As shown in fig. 1, a passive gripper for isotope production mainly comprises a driving part and a gripping part, wherein the driving part comprises a steel cable quick connector 1, an end cover 2, a bearing 3, an outer cylinder 4 and a mandrel 5, an inner ring of the bearing 3 is sleeved on the steel cable quick connector 1, the mandrel 5 is connected with the steel cable quick connector 1, an outer ring of the bearing 3 is connected with the outer cylinder 4, and the end cover 2 is connected with the outer cylinder 4; the grabbing part comprises a bearing nut 6, a hump shaft 7 and a grabbing hook 8, the bearing nut 6 is connected with the hump shaft 7, the grabbing hook 8 is connected with the hump shaft 7 in a hinged mode, and the grabbing hook 8 can swing around a hinged point; when the driving part and the grabbing part move axially, the guide post 46 can slide in the hump groove 71, and the hump groove 71 is arranged along the circumferential direction of the hump shaft 7, so that the end cover 2 and the outer cylinder 4 can also rotate circumferentially while the driving part moves axially, and in order to improve the fluency of the up-and-down movement of the driving part, a bearing 3 is particularly arranged between the steel cable quick connection 1 and the outer cylinder 4; when the driving part completes up-and-down movement once, the guide column 46 can complete position switching once in the hump groove 71, meanwhile, the mandrel 5 also completes axial position switching once, and the mandrel 5 drives the grabbing hook 8 to open or close so as to grab or release the target.
The working process of the passive gripping device for gripping and releasing the target piece comprises the following steps:
example 1: and (4) target piece grabbing.
As shown in fig. 4, which is a working flow chart of the passive gripping apparatus for gripping the target, the gripping apparatus is connected with the lifting device through a steel cable, the gripper enters a designated hole channel under the action of the lifting equipment, the gripper descends, the gripper guide head 75 enters a gripper head hole, the contact bottom surface 74 contacts with the upper surface of the gripper head (as shown in figure 4 (b)), the driving part continues to descend until the bottom surface 42 contacts with the limiting table 73, the guide column 46 enters the lower groove 72 (as shown in figure 4 (c)), the driving part is lifted until the bearing step 41 contacts with the bearing nut 6, the guide column 46 enters the through groove 77, namely, the guide post 46 completes one position switching in the hump groove 71, the mandrel 5 also completes one axial position switching, the mandrel 5 drives the grabbing hook 8 to open, the target piece is grabbed ((as shown in figure 4 (d)), meanwhile, the mandrel 5 also realizes mechanical self-locking of the grabbing state of the grabbing hook 8, so that the target piece is prevented from falling in the hoisting process.
Example 2: the target is released.
As shown in fig. 5, which is a working flow diagram of the passive gripper releasing a target, the gripper is connected with a lifting device through a steel cable, the gripper (including the target) enters a specified pore passage under the action of the lifting device, the gripper descends, the target touches the bottom, a driving part continues to descend to a bottom surface 42 to contact a limiting table 73, a guide post 46 enters a lower groove 72 (as shown in fig. 5 (c)), the driving part is lifted until the guide post 46 contacts an upper groove 76, that is, the guide post 46 completes one position switching in a hump groove 71, the mandrel 5 also completes one axial position switching, the mandrel 5 drives a grab hook 8 to fold, the release of the target is realized ((as shown in fig. 5 (d)), and meanwhile, the mandrel 5 also realizes mechanical self-locking of the release state of the grab hook 8, so that a head 75 can enter a grab head hole of the target when the target is grabbed.
Claims (7)
1. A passive gripping apparatus for isotope production mainly comprises a driving part and a gripping part, wherein the driving part comprises a steel cable quick joint (1), an end cover (2), a bearing (3), an outer cylinder (4) and a mandrel (5), an inner ring of the bearing (3) is sleeved on the steel cable quick joint (1), the mandrel (5) is connected with the steel cable quick joint (1), an outer ring of the bearing (3) is connected with the outer cylinder (4), and the end cover (2) is connected with the outer cylinder (4); the grabbing part comprises a bearing nut (6), a hump shaft (7) and a grabbing hook (8), the bearing nut (6) is connected with the hump shaft (7), the grabbing hook (8) is connected with the hump shaft (7) in a hinged mode, and the grabbing hook (8) can swing around a hinged point.
2. A passive gripper for isotope production according to claim 1, wherein: the steel cable quick connector (1) is positioned at the upper end of the gripping apparatus, so that the gripping apparatus can be quickly replaced.
3. A passive gripper for isotope production according to claim 1, wherein: the bearing nut (6) is positioned at the upper end of the hump shaft (7) and is connected in a threaded mode.
4. A passive gripper for isotope production according to claim 1, wherein: the hump shaft (7) is provided with a limiting table (73), a contact bottom surface (74), a guide head (75) and a hump groove (71) which surrounds in the circumferential direction.
5. A passive gripper for isotope production according to claim 4, wherein: the hump groove (71) consists of a lower groove (72), an upper groove (76) and through grooves (77), the lower groove (72) is continuously arranged, and the upper groove (76) and the through grooves (77) are alternately arranged.
6. A passive gripper for isotope production according to claim 1, wherein: the guide posts (46) on the outer barrel (4) are uniformly distributed in three circumferential directions.
7. A passive gripper for isotope production according to claim 1, wherein: the steel cable quick connector (1), the mandrel (5) and the outer cylinder (4) are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920692086.7U CN210103296U (en) | 2019-05-15 | 2019-05-15 | Passive gripping apparatus for isotope production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920692086.7U CN210103296U (en) | 2019-05-15 | 2019-05-15 | Passive gripping apparatus for isotope production |
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| Publication Number | Publication Date |
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| CN210103296U true CN210103296U (en) | 2020-02-21 |
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| CN201920692086.7U Active CN210103296U (en) | 2019-05-15 | 2019-05-15 | Passive gripping apparatus for isotope production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113401781A (en) * | 2021-06-23 | 2021-09-17 | 中国核动力研究设计院 | Mechanical lifting device for radioactive drying salt barrel |
-
2019
- 2019-05-15 CN CN201920692086.7U patent/CN210103296U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113401781A (en) * | 2021-06-23 | 2021-09-17 | 中国核动力研究设计院 | Mechanical lifting device for radioactive drying salt barrel |
| CN113401781B (en) * | 2021-06-23 | 2022-11-15 | 中国核动力研究设计院 | Mechanical lifting device for radioactive drying salt barrel |
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