CN215160308U

CN215160308U - Resistance plug operation tool based on gravity type automatic gripping apparatus

Info

Publication number: CN215160308U
Application number: CN202023105554.8U
Authority: CN
Inventors: 宋函默
Original assignee: Shenzhen Sunward Electronic Technology Co ltd
Current assignee: Shenzhen Sunward Electronic Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-12-14
Anticipated expiration: 2030-12-21

Abstract

A resistance plug operation tool based on gravity type automatic gripping apparatus relates to the technical field of resistance plug assembly taking and placing, which is used on a fuel assembly, wherein the fuel assembly is provided with a resistance plug assembly, the resistance plug operation tool comprises an upper seat frame, a hand-operated lifting mechanism, a connecting pipe, an automatic gripping head and a lower seat frame, the upper seat frame and the lower seat frame are respectively arranged at two ends of the connecting pipe, the lower seat frame comprises a guide shaft pin, a long pin shaft and a short pin shaft, the guide shaft pin is used for inserting and positioning with the guide hole, the long pin shaft and the short pin shaft are used for contacting and positioning with the surface of the fuel assembly, the automatic gripping head is coaxially arranged in the connecting pipe in a sliding way, the hand-operated lifting mechanism is arranged in the upper seat frame, the hand-operated lifting mechanism and the automatic gripping head are linked to drive the automatic gripping head to slide back and forth relative to the connecting pipe, in the utility model, based on the gravity type automatic gripping apparatus, the resistance plug assembly is automatically gripped and released after being lowered in place, full mechanical automation operation improves maneuverability by a wide margin, and safe and reliable reduces the operation degree of difficulty.

Description

Resistance plug operation tool based on gravity type automatic gripping apparatus

Technical Field

The utility model relates to a technical field is got to resistance plug subassembly, concretely relates to resistance plug operation tool based on automatic gripping apparatus of gravity type.

Background

The fuel assembly and the plug assembly of a nuclear power plant have previously used the same operating tool. When the operating tool is used, the operating tool is hung on a lifting hook of the fuel grabbing machine, an operator operates the operating tool on an operating platform of the fuel grabbing machine, and the resistance plug assembly in the fuel assembly is pulled out or replaced.

Because burnable poison is very long, need lead to the barred bundle at the extraction in-process, consequently this operation instrument is furnished with the direction comb, and resistance stopper length is then very short, need not the direction during extraction, seems comparatively heavy and loaded down with the operation of same instrument, consequently, has to treat the improvement part, needs to develop a resistance stopper subassembly specialized tool and simplifies the operation, the utility model provides a resistance stopper operation instrument based on gravity type automatic gripping apparatus.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model aims to provide a resistance plug operation tool based on gravity type automatic gripping apparatus, descend to target in place the back and snatch automatically and release resistance plug assembly, full mechanical automation improves maneuverability by a wide margin, and safe and reliable reduces the operation degree of difficulty, and concrete scheme is as follows:

the utility model provides a resistance plug operation instrument based on gravity type automatic gripping apparatus for on the fuel assembly, be equipped with resistance plug subassembly in the fuel assembly, just the fuel assembly top correspondence is provided with the top tube seat, the guiding hole has been seted up on the top tube seat, resistance plug operation instrument includes top seat frame, hand hoist mechanism, connecting pipe, automatic head and lower seat frame of grabbing, top seat frame, lower seat frame set up respectively in the both ends of connecting pipe, top seat frame is used for being connected with outside crane lifting hook, lower seat frame is including direction pivot, long pivot and stub axle, the direction pivot be used for with the guiding hole location of pegging graft, long pivot and stub axle be used for with the surface contact location of fuel assembly, the automatic head of grabbing coaxial slide set up in the connecting pipe, hand hoist mechanism locates in the top seat frame, hand hoist mechanism with the automatic head of grabbing sets up in order to drive the automatic head of grabbing is relative the connection The tube slides reciprocally.

Further, the hand-operated lifting mechanism comprises a frame, a first main shaft, a second main shaft, a pawl, a ratchet wheel, a winding drum, a steel wire rope, a first gear, a second gear, a hand wheel and a handle, the frame is fixedly arranged on the upper seat frame, the first main shaft and the second main shaft are arranged in parallel and are both arranged on the frame in a penetrating way, the ratchet wheel, the winding drum and the first gear are sequentially and coaxially arranged on the first main shaft in a penetrating way, the pawl is rotationally arranged on the machine frame, and the pawl drives the ratchet wheel to do intermittent motion, the second gear is coaxially arranged with the second main shaft, the second gear is meshed with the first gear, the hand wheel is in coaxial transmission connection with the second gear, the handle is installed on the hand wheel, the steel wire rope is wound on the winding drum, and one end of the steel wire rope is in transmission connection with the automatic grabbing head.

Further, hand hoist mechanism still includes the dust cover, the dust cover covers and establishes the frame.

Furthermore, the upper seat frame comprises a lifting shaft, a lifting plate, support pipes and flanges, the support pipes are arranged on two opposite sides of the lifting plate, the two support pipes are arranged on the lifting shaft in a penetrating mode, and the lifting shaft is connected with the support pipes through the flanges.

Furthermore, the upper seat frame further comprises two stop blocks arranged at intervals, and the stop blocks are coaxially fixed on the lifting shaft.

Further, the handle is long.

Further, a guide end portion is formed at an end portion of the guide shaft pin.

Compared with the prior art, the beneficial effects of the utility model are as follows:

(1) in a normal state, the resistance plug operating tool is hung on the long-handle tool support hanger, and when the resistance plug operating tool is used, the resistance plug operating tool is hung on a hook of the fuel grabbing machine through the upper seat, an operator can operate the resistance plug operating tool on an operating platform of the grabbing machine, and the resistance plug assembly in the fuel assembly in a vertical state is extracted and inserted into the fuel assembly or the storage grillwork. Specifically, the crane is operated, the operating tool is located at the lowest working position when being grabbed, the guide shaft pin is inserted into the guide hole of the upper tube seat at the moment, the long pin shaft and the short pin shaft simultaneously contact the upper plane of the fuel assembly, if the grabbing machine does not have a force measuring device, a spring scale needs to be added on the lifting hook, the lifting hook cannot continuously descend after no load exists, so that the operating tool is prevented from toppling over, the hand-operated lifting mechanism is operated, the automatic grabbing head descends to the lowest working position, the grabbing head on the automatic grabbing head enters the connecting handle of the resistance plug assembly, the grabbing head automatically opens, and the hand-operated lifting mechanism is operated, so that the automatic grabbing head with the load resistance plug assembly is pulled out of the fuel assembly and ascends to the highest working position. At the moment, the automatic grabbing head is self-locked, the resistance plug assembly cannot fall off by self, the crane is operated, the operating tool is located at the highest working position during grabbing, the crane moves horizontally, the operating tool descends to the lowest working position during releasing, and the resistance plug assembly is inserted into the fuel assembly or the storage grillwork. The hand-operated lifting mechanism is operated to enable the automatic grabbing head to descend to the lowest working position, the grabbing head automatically works, and the resistance plug assembly can be put down at the moment. And then, operating the hand-operated lifting mechanism to enable the automatic grabbing head to ascend to the highest working position, and driving the operating tool to ascend and move by the crane to start the next operation.

To sum up, the utility model discloses based on gravity type automatic gripping apparatus, descend to get in place the back and snatch automatically and release by the hanging thing, full mechanical automation is operated, need not power (if pneumatic, electronic, surge etc.) or manual operation, improves maneuverability by a wide margin, and safe and reliable reduces the operation degree of difficulty.

Drawings

Fig. 1 is an overall schematic view of an embodiment of the present invention;

fig. 2 is the overall schematic view of the middle hand-operated lifting mechanism of the present invention.

Reference numerals: 1. a resistance plug assembly; 2. an upper pipe seat; 3. an upper seat frame; 31. lifting the shaft; 32. a hanger plate; 33. a stent tube; 34. a flange; 35. a stopper; 4. a hand-operated lifting mechanism; 5. a frame; 6. a first main shaft; 7. a second main shaft; 8. a pawl; 9. a ratchet wheel; 10. a reel; 11. a wire rope; 12. a first gear; 13. a second gear; 14. a hand wheel; 15. a handle; 16. a connecting pipe; 17. a lower seat frame; 18. a guide shaft pin; 19. a dust cover; 20. and (4) automatically grabbing the head.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Referring to figures 1 and 2 of the drawings, a gravity-type automatic gripper-based resistance plug operating tool is used for extracting or replacing a resistance plug assembly 1 in a fuel assembly and is used together with the fuel assembly. Be equipped with resistance plug assembly 1 in the fuel assembly, and the fuel assembly top corresponds and is provided with upper tube seat 2, has seted up the guiding hole on the upper tube seat 2 for use with this operation instrument cooperation.

Specifically, the resistance plug operation instrument includes upper bracket 3, hand hoist mechanism 4, connecting pipe 16, automatic head 20 and lower seat frame 17 of grabbing, upper bracket 3, lower seat frame 17 sets up respectively in the both ends of connecting pipe 16, upper bracket 3 is used for being connected with outside crane lifting hook, lower seat frame 17 is including direction pivot 18, long round pin axle and short pin axle, the tip of direction pivot 18 is formed with the direction tip, the external diameter is less, be used for with the guiding hole grafting location, long round pin axle and short pin axle are used for the surface contact location with fuel assembly, automatic head 20 coaxial sliding of grabbing sets up in connecting pipe 16, hand hoist mechanism 4 is located in upper bracket 3, hand hoist mechanism 4 sets up in order to drive automatic head 20 relative connecting pipe 16 reciprocating sliding with automatic head 20 linkage.

In a normal state, the resistance plug operating tool is hung on a long-handle tool support hanger, and when the resistance plug operating tool is used, the resistance plug operating tool is hung on a lifting hook of a fuel grabbing machine through an upper seat frame 3, an operator can operate the operating tool on an operating platform of the grabbing machine, and the resistance plug assembly 1 in a vertical fuel assembly is drawn out and inserted into the fuel assembly or a storage grid.

Detailed description, upper bracket 3 includes lifting spindle 31, hanger plate 32, support tube 33 and flange 34, hanger plate 32's the relative both sides are provided with support tube 33 perpendicularly, lifting spindle 31 wears to establish two support tubes 33, and lifting spindle 31 passes through flange 34 and is connected with support tube 33, upper bracket 3 still includes two dogs 35 that the interval set up, dog 35 coaxial fixation is on lifting spindle 31, the space that two dogs 35 formed is used for articulating with the lifting hook, place the relative lifting spindle 31 dislocation of couple and slide, stability when guaranteeing that whole operating means is lifted. The hand-operated lifting mechanism 4 is arranged below the lifting shaft 31.

In order to realize the stable movement of the automatic gripper 20, the hand-operated lifting mechanism 4 comprises a frame 5, a first main shaft 6, a second main shaft 7, a pawl 8, a ratchet wheel 9, a winding drum 10, a steel wire rope 11, a first gear 12, a second gear 13, a hand wheel 14 and a handle 15, wherein the frame 5 is fixedly installed on the upper seat frame 3, the first main shaft 6 and the second main shaft 7 are arranged in parallel and are respectively arranged on the frame 5 in a penetrating manner, the ratchet wheel 9, the winding drum 10 and the first gear 12 are sequentially and coaxially arranged on the first main shaft 6, the pawl 8 is rotatably installed on the frame 5, the pawl 8 drives the ratchet wheel 9 to do intermittent movement, the second gear 13 and the second main shaft 7 are coaxially arranged, the second gear 13 is meshed with the first gear 12, the hand wheel 14 is integrally disc-shaped and is fixedly connected with one end of the second main shaft 7 far away from the second gear 13, so that the hand wheel 14 is coaxially connected with the second gear 13 in a transmission manner, the handle 15 is strip-shaped, the handle 15 is arranged on the hand wheel 14, the steel wire rope 11 is wound on the winding drum 10, and one end of the steel wire rope 11 is in transmission connection with the automatic grabbing head 20.

In this embodiment, the automatic gripper 20 is manufactured by using the chinese utility model patent with the application number CN201420112503.3, entitled "a control rod gripping mechanism for nuclear power station". The automatic gripper head 20 is based on a star wheel mechanism and is organically combined and designed through the whole gripper and other structures of each part. The tool does not need power (such as pneumatic, electric and hydraulic) or manual driving to act, and after the tool descends to the right position, the grabbing and releasing of the operation object are automatically completed only by the self gravity of the tool.

When an operator holds the handle 15 to drive the hand wheel 14 to rotate, the second gear 13 drives the first gear 12 to rotate, so that the winding drum 10 is driven to rotate, the steel wire rope 11 is wound and unwound, and the automatic grabbing head 20 is driven to descend or ascend in the vertical direction. In addition, by arranging the ratchet wheel 9 and the pawl 8, in the lifting process, the ratchet wheel 9 and the pawl 8 are used as a one-way intermittent motion mechanism, so that the anti-reversion in the lifting process is realized, the automatic gripper head 20 is self-locked, the automatic gripper head 20 is prevented from accidentally falling, and the work is reliable.

Preferably, the hand-operated lifting mechanism 4 further comprises a dust cover 19, the dust cover 19 is integrally rectangular, the frame 5 is covered with the dust cover 19, the parts on the frame 5 are protected, and the possibility of damage is reduced.

The working process of the utility model is as follows:

the crane is operated, the operating tool is in the lowest working position when being grabbed, the guide shaft pin 18 is inserted into the guide hole of the upper tube seat 2 at the moment, the long pin shaft and the short pin shaft simultaneously contact the upper plane of the fuel assembly, if the grabbing machine does not have a force measuring device, a spring scale needs to be added on the lifting hook, the lifting hook cannot continuously descend after no load, so that the operating tool cannot topple, the hand-operated lifting mechanism 4 is operated, the automatic grabbing head 20 descends to the lowest working position, the grabbing head on the automatic grabbing head 20 enters the connecting handle of the resistance plug assembly 1, the grabbing head automatically opens, and the hand-operated lifting mechanism 4 is operated, so that the automatic grabbing head 20 with the load is pulled out of the fuel assembly and ascends to the highest working position. At the moment, the automatic grabbing head 20 is self-locked, the resistance plug assembly 1 cannot fall down by itself, the crane is operated, the operating tool is located at the highest working position during grabbing, the crane moves horizontally, the operating tool is lowered to the lowest working position during releasing, and the resistance plug assembly 1 is inserted into a fuel assembly or a storage grid. The hand-operated lifting mechanism 4 is operated to enable the automatic grabbing head 20 to descend to the lowest working position, the grabbing head automatically works, and the resistance plug assembly 1 can be put down at the moment. Then, the hand-operated lifting mechanism 4 is operated to lift the automatic gripper head 20 to the highest working position, and the crane drives the operating tool to lift and move, so that the next operation is started.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A resistance plug operation tool based on a gravity type automatic gripping apparatus is used for a fuel assembly, wherein a resistance plug assembly (1) is arranged in the fuel assembly, an upper tube seat (2) is correspondingly arranged above the fuel assembly, and a guide hole is formed in the upper tube seat (2), and is characterized in that the resistance plug operation tool comprises an upper seat frame (3), a hand-operated lifting mechanism (4), a connecting tube (16), an automatic gripping head (20) and a lower seat frame (17), wherein the upper seat frame (3) and the lower seat frame (17) are respectively arranged at two ends of the connecting tube (16), the upper seat frame (3) is used for being connected with an external crane hook, the lower seat frame (17) comprises a guide shaft pin (18), a long pin shaft and a short pin shaft, the guide shaft pin (18) is used for being spliced and positioned with the guide hole, and the long pin shaft and the short pin shaft are used for being in contact and positioning with the surface of the fuel assembly, automatic grab head (20) coaxial slip set up in connecting pipe (16), hand elevating system (4) are located in upper bracket (3), hand elevating system (4) with automatic grab head (20) linkage sets up in order to drive automatic grab head (20) is relative connecting pipe (16) reciprocating sliding.

2. The resistance plug operating tool based on the gravity type automatic gripper is characterized in that the hand-operated lifting mechanism (4) comprises a frame (5), a first main shaft (6), a second main shaft (7), a pawl (8), a ratchet (9), a winding drum (10), a steel wire rope (11), a first gear (12), a second gear (13), a hand wheel (14) and a handle (15), the frame (5) is fixedly installed on the upper seat frame (3), the first main shaft (6) and the second main shaft (7) are arranged in parallel and are all arranged on the frame (5) in a penetrating manner, the ratchet (9), the winding drum (10) and the first gear (12) are sequentially arranged on the first main shaft (6) in a coaxial penetrating manner, the pawl (8) is rotatably installed on the frame (5), and the pawl (8) drives the ratchet (9) to make intermittent movement, second gear (13) with second main shaft (7) coaxial arrangement, just second gear (13) with first gear (12) meshing sets up, hand wheel (14) with second gear (13) coaxial drive is connected, handle (15) install in on hand wheel (14), wire rope (11) are around locating on reel (10), just wire rope (11) one end with automatic head (20) transmission connection is grabbed.

3. A gravity based automatic gripper resistance plug operating tool according to claim 2, wherein the hand lifting mechanism (4) further comprises a dust cover (19), the dust cover (19) covering the frame (5).

4. The gravity type automatic gripper-based drag plug operating tool according to claim 1, wherein the upper seat frame (3) comprises a lifting shaft (31), a lifting plate (32), support tubes (33) and a flange (34), the support tubes (33) are arranged on two opposite sides of the lifting plate (32), the lifting shaft (31) penetrates through the two support tubes (33), and the lifting shaft (31) is connected with the support tubes (33) through the flange (34).

5. A gravity based automatic gripper resistance plug operated tool according to claim 4, wherein the upper housing (3) further comprises two stops (35) spaced apart, the stops (35) being coaxially fixed to the hoist shaft (31).

6. A gravity based automatic gripper resistance plug operated tool according to claim 2, wherein the handle (15) is elongate.

7. A gravity based automatic gripper resistance plug operating tool according to claim 1, wherein the end of the guiding axle pin (18) is formed with a guiding end.