CN217102649U

CN217102649U - Telescopic lifting appliance seat for nuclear fuel related assembly

Info

Publication number: CN217102649U
Application number: CN202122874443.1U
Authority: CN
Inventors: 方哲; 尤勇; 黄帆; 欧阳时玮
Original assignee: China Jianzhong Nuclear Fuel Co Ltd
Current assignee: China Jianzhong Nuclear Fuel Co Ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-08-02
Anticipated expiration: 2031-11-23

Abstract

The utility model belongs to the field of machinery, concretely relates to telescopic hoist seat is used to relevant subassembly of nuclear fuel. The device comprises a push rod, a sliding block and a supporting seat, wherein the push rod is connected with the sliding block, and the supporting seat is connected with the sliding block. The beneficial effects of the utility model reside in that: (1) the hanger seat does not need to be replaced in the hanging process of the assembly, so that the safety risk of falling in the replacement process of the hanger seat is eliminated; (2) the suspension of the related components can be realized without disassembling the hanger seat of the nuclear fuel component; (3) the hanger seat is not disassembled, and the stability and the precision of the hanger seat are better.

Description

Telescopic lifting appliance seat for nuclear fuel related assembly

Technical Field

The utility model belongs to the field of machinery, concretely relates to telescopic hoist seat is used to relevant subassembly of nuclear fuel.

Background

The nuclear fuel assembly and the related assemblies need to be respectively inverted after the cleaning process is finished so as to realize the final boxing and other work, the original fuel assembly and the related assemblies share the same inverted warehouse support in consideration of the whole space of a warehouse, and the support can be provided with a lifting appliance seat of the fuel assembly or the related assemblies. When the related components need to be suspended, the lifting tool seat used by the nuclear fuel component needs to be detached firstly, and then the lifting tool seat special for the related components is fixed on the lifting tool seat station of the original nuclear fuel component, so that the suspension of the related components is realized.

Although the method for replacing the lifting tool seat can realize the suspension of two components sharing the same lifting position at different times, the number of the components is large, the replacement is frequent, the labor intensity is high, the replacement needs to be carried out on a lifting vehicle with the length of more than 5 meters, the lifting tool seat is easy to fall off to hurt people, field equipment or personnel fall off, and other safety risks are high, and the positioning precision of the lifting tool seat is reduced due to frequent disassembly and assembly from the mechanical perspective.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nuclear fuel is telescopic hoist seat for subassembly, it can solve different subassemblies and hang the same position of hanging and change the hoist seat, frequently change the safe risk that the hoist seat probably arouses and original not dismantle the problem that the hoist seat just can't realize that different subassemblies hang.

The technical scheme of the utility model as follows: a telescopic lifting appliance seat for nuclear fuel related assemblies comprises a push rod, a slide block and a supporting seat, wherein the push rod is connected with the slide block, and the supporting seat is connected with the slide block.

The push rod is connected with the sliding block in a welding mode.

The supporting seat is connected with the sliding block through tolerance fit.

And a U-shaped groove structure is arranged in the middle of the sliding block.

The right half part of the U-shaped groove structure of the sliding block is provided with a V-shaped structure on the contact of the U-shaped groove.

The supporting seat is also connected with a locking pin.

The locking pin is connected with the supporting seat through a threaded structure.

The supporting seat is fixed on the bracket of the hanging position through screws.

The screw is connected with the bracket through a thread structure.

The beneficial effects of the utility model reside in that: (1) the hanger seat does not need to be replaced in the hanging process of the assembly, so that the safety risk of falling in the replacement process of the hanger seat is eliminated; (2) the suspension of the related components can be realized without disassembling the hanger seat of the nuclear fuel component; (3) the hanger seat is not disassembled, and the stability and the precision of the hanger seat are better.

Drawings

Fig. 1 is a front view of a telescopic spreader base for a nuclear fuel related component according to the present invention;

fig. 2 is a top view of a telescopic spreader base for a nuclear fuel related component according to the present invention;

fig. 3 is a left side view of a telescopic hanger seat for a nuclear fuel related component provided by the present invention;

FIG. 4 is a schematic illustration of a nuclear fuel assembly handling process;

FIG. 5 is a schematic illustration of a nuclear fuel related component handling process;

FIG. 6 is a sectional view taken along line A-A in FIG. 1;

fig. 7 is a sectional view taken along line B-B in fig. 1.

In the figure: the lifting tool comprises 1 push rod, 2 slide blocks, 3 locking pins, 4 screws, 5 supporting seats, 6 supports, 7 lifting tools for nuclear fuel assemblies, 8 lifting tool seats for nuclear fuel assemblies, 9 fuel assemblies, 10 lifting tools for related assemblies, 11 telescopic lifting tool seats for nuclear fuel related assemblies and 12 related assemblies.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 3, a telescopic spreader base for nuclear fuel related components comprises a push rod 1, a slide block 2, a locking pin 3, a screw 4 and a support base 5.

The push rod 1 is connected with the sliding block 2 in a welding mode, and when the push rod 1 is used for sliding the sliding block 2, the push rod acts as a handle for manually applying force pushing force or pulling force. As shown in fig. 6 and 7, a U-shaped groove structure (non-through groove structure) is arranged in the middle of the slider 2, the left half part is provided with a pin shaft 3 for limiting, the right half part is provided with a V-shaped structure on the U-shaped groove for the hook of the related component to be placed thereon, and the slider 2 can freely stretch out and draw back through the mutual matching with the supporting seat 5: when the sliding block 2 extends rightwards to the limit (the locking pin 3 contacts the end part of the U-shaped groove at the leftmost end of the sliding block 2, so that the accident that the sliding block 2 falls out of the supporting seat 5 due to continuous extension is avoided), the same stop groove is arranged at the right end of the sliding block 2, and the sliding block 2 is prevented from falling from the two ends of the supporting seat 5. At the moment, a crane is adopted to hoist the components to the telescopic hanger seats for the related components through the related component transferring hanger rods for hanging; when the slide block 2 is retracted leftwards, the hoisting of the fuel assembly to the station position is not affected. The sliding block 2 is connected with the push rod 1 in a welding mode, the sliding block 2 is matched with the locking pin 3 in a tolerance matching mode (in a normal condition, in a non-contact mode), and the sliding block 2 is connected with the supporting seat 5 in the tolerance matching mode. The fitting pin 3 is used for preventing the slider accident from dropping, and its guard action, 3 normal conditions of fitting pin do not contact with the U type groove at slider 2 top, nevertheless when slider 2 stretches out from left to right and reaches the limit, the fitting pin 3 contacts with the U type groove leftmost at slider 2 top, plays the limiting displacement, prevents that slider 2 from falling out from supporting seat 5. The connecting part of the middle part of the locking pin 3 and the supporting seat 5 is of a thread structure so as to fix the locking pin 3 on the supporting seat 5, and the bottom part of the locking pin is of a cylindrical pin structure and is not contacted with a U-shaped groove at the top part of the sliding block 2. The locking pin 3 is connected with the supporting seat 5 through a thread structure. The screw 4 is used for fixing the supporting seat 5 on a bracket of a hanging position. The screw 4 is fixed with the supporting seat 5 through pressing force, the screw 4 is connected with the support through a thread structure, so that the screw is adopted without a bolt, and the problem that after the screw is loosened accidentally, a nut matched with the bolt falls from high altitude to strike people or objects on the ground is mainly solved, the part of the screw is selected without the nut, the head of the screw faces upwards, and the falling danger cannot occur. The supporting base 5 is a base of the whole device. The supporting seat 5 is connected with the sliding block 2 through tolerance fit, the supporting seat 5 is pressed by the screws 4, and the supporting seat 5 applies pressure (gravity) to the bracket at the hanging position.

The utility model discloses a use method as follows:

hanging related components: the sliding block 2 is pushed out by about 350mm from left to right, the crane drives the hanging rod to hang the related component and move to an adjacent position, then the hanging rod is slowly moved to the V-shaped groove, the crane slowly moves downwards, the hanging rod is hung in the V-shaped groove along with the movement of the crane, the related component is placed in the hanging position, and the hanging rod is released after the crane is loosened.

Suspension of the fuel assembly: the related components are lifted and carried away by a crane, the sliding block 2 is pushed back by about 350mm from right to left, the crane drives the hanging rod to hang the fuel component and move to an adjacent position, then the fuel component is slowly moved to the clamping groove, the crane slowly moves downwards, the hanging rod is hung in the clamping groove along with the movement of the crane, the fuel component is placed in the hanging position, and the crane is loosened and then is driven away.

The utility model discloses an innovation point is as follows:

fuel assembly and relevant subassembly appearance structure are different, consequently, adopt different hoists to realize that it removes and hangs to lead to using different hoist seats, the utility model discloses utilize the method of space dislocation, fuel assembly is in original support promptly, and the relevant subassembly stretches out and hangs after a section length (because the fuel assembly that hangs is close to the support, and relevant subassembly stretches out a section length, hangs not in same position for crane or hoist can not produce the interference, consequently, can not dismantle fuel assembly's hoist seat), under the prerequisite that need not dismantle the hoist seat like this, can realize the work of hanging of two kinds of subassemblies.

And (3) safety protection design: the spout in the spout 2 is the non-through groove structure, through the cooperation with the fitting pin 3, mainly is in order to prevent that the unexpected follow supporting seat 5 roll-off of spout 2, and the ground that drops injures people or injures the thing. At ordinary times, the locking pin 3 is not in contact with the leftmost end or the rightmost end of the sliding groove respectively only under the unexpected condition, and the limiting effect is achieved.

The utility model has the advantages that easily operation only needs to pull out slider 2 or push back and can realize hanging of relevant subassembly or fuel assembly respectively.

As can be seen in fig. 4, when the top slide 2 is moved to the left, the fuel assembly can be suspended directly in the nuclear fuel assembly spreader base 8. After the nuclear fuel assembly is released by the spreader 7, the fuel assembly 9 can be suspended from the nuclear fuel assembly spreader base 8 (sling mount).

It can be seen from figure 5 that the present invention can be used without dismantling the nuclear fuel assembly spreader base 8 after the slider 2 has been extended to the right for suspending the relevant assembly.

The push rod 1 is connected with the slide block 2 in a welding mode. The slider 2 is connected with the push rod 1 in a welding mode, the slider 2 is connected with the supporting seat 5 in a tolerance fit mode, and in an extreme case, the slider 2 is subjected to the resistance of the locking pin 3 (the slider 2 is required to fall from two ends of the supporting seat 5). The locking pin 3 applies resistance to the slider 2 (when the slider 2 is to fall from both ends of the support base 5), and the locking pin 3 is connected to the support base 5 by a screw structure. The screw 4 applies pressing force to the supporting seat 5, and the screw 4 is connected with the bracket through a thread structure. The support seat 5 is pressed by the screw 4, and the support seat 5 applies pressure (gravity) to the bracket.

Claims

1. A telescopic hoist seat for nuclear fuel relevant assembly which characterized in that: the device comprises a push rod, a slide block and a supporting seat, wherein the push rod is connected with the slide block, and the supporting seat is connected with the slide block;

the push rod is connected with the sliding block in a welding mode;

the supporting seat is connected with the sliding block through tolerance fit;

and a U-shaped groove structure is arranged in the middle of the sliding block.

2. The telescopic spreader seat for a nuclear fuel related assembly as claimed in claim 1, wherein: the right half part of the U-shaped groove structure of the sliding block is provided with a V-shaped structure on the contact of the U-shaped groove.

3. The telescopic spreader seat for a nuclear fuel related assembly as claimed in claim 1, wherein: the supporting seat is also connected with a locking pin.

4. A telescopic spreader base for nuclear fuel related components according to claim 3, wherein: the locking pin is connected with the supporting seat through a threaded structure.

5. The telescopic spreader seat for a nuclear fuel related assembly as claimed in claim 1, wherein: the supporting seat is fixed on the bracket of the hanging position through screws.

6. The telescopic spreader seat for a nuclear fuel related assembly according to claim 5, wherein: the screw is connected with the bracket through a thread structure.