CN215358479U

CN215358479U - Spent component underwater gripping apparatus based on gravity type automatic gripping apparatus

Info

Publication number: CN215358479U
Application number: CN202023106665.0U
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: 2021-12-31
Anticipated expiration: 2030-12-21

Abstract

An underwater gripping device of a spent component based on a gravity type automatic gripping device relates to the technical field of gripping tools of nuclear power plants, the spent component comprises a spent fuel component, a damaged component seal tank and a thin-walled cylinder, the underwater gripping device comprises an upper lifting ring, a lower lifting ring, an upper connecting rod, a lower connecting rod, a joint and a gripping mechanism, an automatic opening and closing gripping head coaxially arranged is penetrated in the gripping mechanism in a reciprocating sliding manner, the head part of the automatic opening and closing gripping head is in an inner conical shape so as to be matched with an annular groove, the upper connecting rod, the joint, the lower connecting rod and the gripping mechanism are sequentially connected from top to bottom, the upper connecting rod and the lower connecting rod are both in threaded connection with the joint, the upper lifting ring is detachably arranged at the top end of the upper connecting rod, the lower lifting ring is arranged on the outer wall of the lower connecting rod through a quick-pull bolt, in the utility model, based on the gravity type automatic gripping device, the suspended object is automatically gripped and released after being lowered to the right position, full mechanical automation operation, safety and reliability, and reduced operation difficulty.

Description

Spent component underwater gripping apparatus based on gravity type automatic gripping apparatus

Technical Field

The utility model relates to the technical field of nuclear power plant gripping tools, in particular to a spent component underwater gripping apparatus based on a gravity type automatic gripping apparatus.

Background

The nuclear power plant gripping tool is used for completing gripping and releasing operations of a specific operation object, and the spent fuel assembly underwater gripping tool is used for transferring a spent fuel assembly, a damaged assembly sealing tank and a thin-walled cylinder in a hall of a spent fuel storage pool. And a lifting ring of the underwater gripping apparatus for the spent component is connected with a crane lifting hook, and the crane lifting hook is used for operation. In a storage pool hall, due to the requirements of plant structure arrangement and operation process, operators at a spent component storage station are inconvenient to arrive, and displacement of a spent component in the height direction has certain difficulty, so that the utility model provides a spent component underwater gripping apparatus based on a gravity type automatic gripping apparatus.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide an underwater gripping apparatus for a spent component based on a gravity type automatic gripping apparatus, and the underwater gripping apparatus for the spent component based on the gravity type automatic gripping apparatus automatically grips and releases a lifted object after descending to a proper position, is fully mechanically and automatically operated, is safe and reliable, reduces the operation difficulty, and has the following specific scheme:

a spent component underwater gripping apparatus based on a gravity type automatic gripping apparatus comprises a spent fuel component, a damaged component sealing tank and a thin-wall cylinder, the top parts of the spent fuel assembly, the damaged assembly seal pot and the thin-walled cylinder are all provided with annular grooves, the underwater gripping apparatus comprises an upper lifting ring, a lower lifting ring, an upper connecting rod, a lower connecting rod, a connector and a gripping mechanism, the grabbing mechanism is internally provided with an automatic opening and closing grabbing head which is arranged coaxially in a penetrating way in a reciprocating sliding way, the head part of the automatic opening and closing grabbing head is in an inner conical shape so as to be matched with the annular groove, the upper connecting rod, the joint, the lower connecting rod and the grabbing mechanism are sequentially connected from top to bottom, and the upper connecting rod and the lower connecting rod are both in threaded connection with the joint, the upper lifting ring is detachably mounted at the top end of the upper connecting rod, and the lower lifting ring is mounted on the outer wall of the lower connecting rod through a quick-pull bolt.

Furthermore, the outer wall of the upper connecting rod is provided with a hoisting plate, thread grooves are formed at two ends of the upper hoisting ring, and the upper hoisting ring is locked by a nut after penetrating through the hoisting plate.

Furthermore, a threaded mounting rod is formed at the top of the upper connecting rod, a through hole is formed in the hoisting plate, the hoisting plate is sleeved on the threaded mounting rod through the through hole and then locked by a nut, and the hoisting plate is abutted to the upper connecting rod.

Further, the hoisting plate comprises a bottom plate and side plates, the side plates are vertically arranged on two opposite sides of the bottom plate, and a nut mounting space is formed between the bottom plate and the side plates in an enclosing mode.

Further, be equipped with the fixed block on the outer wall of lower part connecting rod, the both ends clamp of lower part rings is established the fixed block, the fixed block all seted up the pinhole on the tip of lower part rings, the pinhole be used for with the plug pin connection of pulling soon.

Furthermore, the upper hanging ring and the lower hanging ring are both U-shaped.

Compared with the prior art, the utility model has the following beneficial effects:

when the gripping apparatus is used, the gripping apparatus is vertically hung on a crane hook through an upper hanging ring, a dynamometer is connected in series between the gripping apparatus and the hook, and the hoisting and the transferring of the spent component are completed by means of the operation of the crane and the lifting of the hook. The grabbing position is the spent fuel assembly, the damaged assembly seal pot and the annular groove at the top of the thin-wall cylinder.

The detailed operation steps are as follows:

the crane is operated to walk right above the spent fuel assembly, the lifting hook is used for lowering the gripping apparatus at a constant speed, manual auxiliary positioning is carried out, after an automatic opening and closing gripping head in the gripping mechanism enters the annular groove, the automatic opening and closing gripping head is opened to sleeve the top of the spent fuel assembly, and reading of the dynamometer is observed at any time. When the reading is close to zero, the hook stops lowering. And then operating the lifting hook to lift the gripping apparatus at a constant speed, bringing the spent component to a certain height, and transferring the spent component to the position above the release position. And operating the lifting hook to lower the gripping apparatus and the exhausted component at a constant speed, observing the reading of the dynamometer at any time, and stopping lowering the lifting hook when the reading is close to zero. The lifting grab is lifted by operating the lifting hook, the automatic opening and closing grabbing head smoothly disengages from the annular groove at the top of the spent component, and at the moment, the hoisting and the moving of the spent component are completed.

In conclusion, the grabbing and releasing operations of the spent component transportation barrel are completed in sequence, the automatic grabbing and releasing device is based on the gravity type automatic grabbing tool, automatically grabs and releases a hoisted object after descending to the proper position, is operated in a full-mechanical automatic mode, does not need power (such as pneumatic, electric and hydraulic) or manual operation, greatly improves operability, is safe and reliable, and reduces operation difficulty.

Drawings

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

Reference numerals: 1. an upper hoisting ring; 2. a lower hoisting ring; 3. an upper link; 31. a threaded mounting rod; 4. a lower link; 5. a joint; 6. a grabbing mechanism; 7. quickly pulling out the bolt; 8. hoisting the plate; 81. a base plate; 82. a side plate; 9. a through hole; 10. a nut mounting space; 11. a fixed block; 12. a pin hole.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.

As shown in fig. 1, the underwater gripping apparatus for the spent fuel assembly based on the gravity type automatic gripping apparatus is used for transporting the spent fuel assembly, the damaged assembly seal tank and the thin-wall cylinder in a hall of a spent fuel storage pool. And a lifting ring of the underwater gripping apparatus for the spent component is connected with a crane lifting hook, and the crane lifting hook is used for operation. The spent fuel assembly comprises a spent fuel assembly, a damaged assembly seal tank and a thin-walled cylinder, annular grooves are formed in the tops of the spent fuel assembly, the damaged assembly seal tank and the thin-walled cylinder and are used in cooperation with an underwater gripping apparatus of the spent fuel assembly, and finally hoisting and transferring operations of the spent fuel assembly, the damaged assembly seal tank and the thin-walled cylinder are achieved.

Concretely, the gripping apparatus under water includes upper portion rings 1, lower part rings 2, upper portion connecting rod 3, lower part connecting rod 4, connects 5 and snatchs mechanism 6, and upper portion connecting rod 3, lower part connecting rod 4, connect 5 and snatch mechanism 6 and adopt application number CN201420112503.3, and the name is the chinese utility model patent of "a control rod snatchs mechanism for nuclear power station" and is made. The grabbing mechanism 6 is based on a star wheel mechanism, and is designed by organically combining the whole grabbing tool and other structures of all parts, in addition, the adaptability is modified, and the grabbing is modified by changing the shape of the grabbing head and reversing the opening and closing actions through the conversion of inner grabbing and outer grabbing. The grabbing mechanism 6 is internally provided with an automatic opening and closing grabbing head which is arranged coaxially in a penetrating manner in a reciprocating sliding manner, and the shape of the head of the automatic opening and closing grabbing head is changed from an outer cone shape to an inner cone shape so as to be matched with the annular groove. The gripping apparatus does not need power (such as pneumatic, electric and hydraulic) or manual driving tools to act, and after the tools descend to the right position, the gripping and releasing of the operation objects are automatically completed only by means of the self gravity of the tools.

Detailed, upper portion connecting rod 3, joint 5, lower part connecting rod 4 and snatch mechanism 6 and connect gradually from last to bottom, connect 5 and be the screw rod structure for intermediate junction, upper portion connecting rod 3, lower part connecting rod 4 all with connect 5 threaded connection, upper portion connecting rod 3, lower part connecting rod 4 are with whole gripping apparatus detachable two segmentation respectively.

In order to facilitate the connection of the gripping apparatus and the crane, the upper lifting ring 1 is detachably mounted at the top end of the upper connecting rod 3, and the lower lifting ring 2 is mounted on the outer wall of the lower connecting rod 4 through the quick-pull bolt 7. Specifically, the upper hanging ring 1 and the lower hanging ring 2 are both U-shaped rings and are connected with a crane hook for bearing the whole gripping apparatus and a lifted object. Can dismantle on the outer wall of upper portion connecting rod 3 and be equipped with hoist and mount board 8, hoist and mount board 8 includes bottom plate 81 and curb plate 82, and the relative both sides of bottom plate 81 all are provided with curb plate 82 perpendicularly for hoist and mount board 8's cross-section is the U font, thereby makes to enclose between bottom plate 81 and the curb plate 82 and establish formation nut installation space 10, provides the space of placing after wearing to establish hoist and mount board 8 for the nut. The top of upper portion connecting rod 3 is formed with screw thread installation pole 31, has seted up through-hole 9 on the bottom plate 81 of hoist and mount board 8, and hoist and mount board 8 is established behind screw thread installation pole 31 by the nut locking through-hole 9 cover, and hoist and mount board 8 and the setting of upper portion connecting rod 3 butt for hoist and mount board 8 is in stable state. Threaded grooves are formed at two ends of the upper lifting ring 1, and the upper lifting ring 1 is locked by nuts after penetrating through the bottom plate 81 of the lifting plate 8, so that detachable fixed connection is realized. The outer wall of the lower connecting rod 4 is integrally provided with a fixed block 11, namely, the fixed block 11 is fixedly connected with the lower connecting rod 4 in a coaxial mode, the two ends of the lower hanging ring 2 are clamped with the fixed block 11, pin holes 12 are formed in the end portions of the fixed block 11 and the lower hanging ring 2, and the pin holes 12 are used for being connected with the quick-pull plug pins 7 to achieve detachable fixed connection.

When the gripping apparatus is used, the gripping apparatus is vertically hung on a crane hook through the upper hanging ring 1, a dynamometer is connected in series between the gripping apparatus and the hook, and the hoisting and the transferring of the spent component are completed by means of the operation of the crane and the lifting of the hook. The grabbing position is the spent fuel assembly, the damaged assembly seal pot and the annular groove at the top of the thin-wall cylinder.

The detailed operation steps are as follows:

the crane is operated to walk right above the spent fuel assembly, the lifting hook is used for lowering the gripping apparatus at a constant speed, the gripping apparatus is positioned in an auxiliary manner by manual operation, and after the automatic opening and closing gripping head in the gripping mechanism 6 enters the annular groove, the automatic opening and closing gripping head is opened to sleeve the top of the spent fuel assembly, and reading of the dynamometer is observed at any time. When the reading is close to zero, the hook stops lowering. And then operating the lifting hook to lift the gripping apparatus at a constant speed, bringing the spent component to a certain height, and transferring the spent component to the position above the release position. And operating the lifting hook to lower the gripping apparatus and the exhausted component at a constant speed, observing the reading of the dynamometer at any time, and stopping lowering the lifting hook when the reading is close to zero. The lifting grab is lifted by operating the lifting hook, the automatic opening and closing grabbing head smoothly disengages from the annular groove at the top of the spent component, and at the moment, the hoisting and the moving of the spent component are completed.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a weary subassembly underwater gripping apparatus based on gravity type automatic gripping apparatus, the weary subassembly includes weary fuel subassembly, damaged subassembly seal pot and a thin wall section of thick bamboo, the annular groove has all been seted up at the top of weary fuel subassembly, damaged subassembly seal pot and thin wall section of thick bamboo, its characterized in that, the underwater gripping apparatus includes upper portion rings (1), lower part rings (2), upper portion connecting rod (3), lower part connecting rod (4), joint (5) and snatchs mechanism (6), the automatic opening and shutting of coaxial setting is worn to be equipped with in snatchs mechanism (6) reciprocal slip and is grabbed the head shape that opens and shuts, the head shape of the automatic opening and shutting grabber head be interior toper in order to realize with the annular groove adaptation, upper portion connecting rod (3), joint (5), lower part connecting rod (4) and snatch mechanism (6) from last to connecting gradually down, just upper portion connecting rod (3), lower part connecting rod (4) all with joint (5) threaded connection, the upper portion rings (1) are detachably mounted at the top end of the upper portion connecting rod (3), and the lower portion rings (2) are mounted on the outer wall of the lower portion connecting rod (4) through quick-pull bolts (7).

2. The underwater gripping device for the spent component based on the gravity type automatic gripping device is characterized in that a hoisting plate (8) is arranged on the outer wall of the upper connecting rod (3), thread grooves are formed at two ends of the upper lifting ring (1), and the upper lifting ring (1) is locked by a nut after penetrating through the hoisting plate (8).

3. The underwater gripping device for the spent component based on the gravity type automatic gripping device is characterized in that a threaded mounting rod (31) is formed at the top of the upper connecting rod (3), a through hole (9) is formed in the hoisting plate (8), the hoisting plate (8) is sleeved on the threaded mounting rod (31) through the through hole (9) and then locked by a nut, and the hoisting plate (8) is abutted to the upper connecting rod (3).

4. The underwater gripping apparatus of the spent component based on the gravity type automatic gripping apparatus of claim 3, wherein the hoisting plate (8) comprises a bottom plate (81) and side plates (82), the side plates (82) are vertically arranged on two opposite sides of the bottom plate (81), and a nut installation space (10) is defined between the bottom plate (81) and the side plates (82).

5. The underwater gripping device for the spent component based on the gravity type automatic gripping device is characterized in that a fixed block (11) is arranged on the outer wall of the lower connecting rod (4), the fixed block (11) is clamped at two ends of the lower hanging ring (2), pin holes (12) are formed in the end portions of the fixed block (11) and the lower hanging ring (2), and the pin holes (12) are used for being connected with the quick pulling bolt (7).

6. A spent grain gripping apparatus as claimed in claim 5 wherein the upper hoist ring (1) and the lower hoist ring (2) are both provided in a U shape.