CN114043430A - Device for operating a hold-down assembly - Google Patents
Device for operating a hold-down assembly Download PDFInfo
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- CN114043430A CN114043430A CN202111474424.8A CN202111474424A CN114043430A CN 114043430 A CN114043430 A CN 114043430A CN 202111474424 A CN202111474424 A CN 202111474424A CN 114043430 A CN114043430 A CN 114043430A
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- extension arm
- clamping
- cladding
- operating
- spring
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- 238000003825 pressing Methods 0.000 claims abstract description 78
- 239000000446 fuel Substances 0.000 claims abstract description 41
- 238000005253 cladding Methods 0.000 claims abstract description 38
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000007906 compression Methods 0.000 claims abstract description 19
- 239000008188 pellet Substances 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 description 1
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
- B25B27/30—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing springs, e.g. coil or leaf springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
- B25B11/02—Assembly jigs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
An apparatus for operating a compression assembly for compressing fuel pellets within a cladding of a fuel element when the cladding is loaded, comprising: a clamping piece comprising two oppositely arranged clamping parts for clamping the pressing assembly so as to load the pressing assembly into the cladding of the fuel element or take the pressing assembly out of the cladding; the operating piece is movably connected with the clamping pieces and used for operating the clamping pieces to adjust the distance between the two clamping parts. The device for operating the pressing component clamps the pressing component by using the clamping piece, can conveniently operate the pressing component to move the pressing component, such as loading the pressing component into a cladding or taking the pressing component out of the cladding, does not limit the occasions of fuel elements, and is convenient for operating the pressing component at any time; the distance between the two clamping parts is adjusted through the operating part, so that the pressing assembly is clamped or released through the two clamping parts, the operation is simple and fast, and the work efficiency is improved.
Description
Technical Field
The embodiment of the application relates to the technical field of nuclear reactor fuel element assembly, in particular to a device for operating a compression assembly.
Background
Cladding for nuclear fuel elements is used to load fuel pellets and to prevent axial play of the fuel pellets within the cladding, a compression spring is typically provided to compress the fuel pellets. Currently, fuel element assembly is typically performed on a production line, with transport and guides pushing the hold-down spring into the enclosure to assemble the hold-down spring and enclosure. However, the above-described solution limits the occasions where the fuel elements are assembled and is inefficient in operation.
Disclosure of Invention
According to an embodiment of the present application, there is provided an apparatus for operating a compaction assembly for compacting fuel pellets within a cladding of a fuel element when the cladding is loaded, the apparatus comprising: a clamping piece comprising two oppositely arranged clamping parts for clamping the pressing assembly so as to load the pressing assembly into the cladding of the fuel element or take the pressing assembly out of the cladding; the operating piece is movably connected with the clamping pieces and used for operating the clamping pieces to adjust the distance between the two clamping parts.
According to the device for operating the pressing assembly of the embodiment of the application, the pressing assembly is clamped by the clamping piece, the pressing assembly can be conveniently operated to move the pressing assembly, such as to be installed in or taken out of a cladding, without limiting the occasions of fuel elements, the pressing assembly can be conveniently operated at any time, and the pressing assembly can be conveniently operated in a close range; the distance between the two clamping parts is adjusted through the operating part, so that the pressing assembly is clamped or released through the two clamping parts, the operation is simple and fast, and the work efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of an apparatus for operating a hold-down assembly according to an embodiment of the present application;
FIG. 2 is a side view of the device of FIG. 1;
FIG. 3 is a schematic structural diagram of a hold-down assembly according to an embodiment of the present application;
figure 4(a) is a schematic view of an end plug of the compression assembly of figure 3;
figure 4(b) is another angular view of the end plug of figure 4 (a);
FIG. 5 is a schematic illustration of a fuel element cladding according to an embodiment of the present application.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described below in detail and completely with reference to the accompanying drawings of the embodiments of the present application. It should be apparent that the described embodiment is one embodiment of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
It is to be noted that, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
The fuel elements described in the present disclosure may include, for example, fuel pellets, cladding, end plug assemblies, and hold-down assemblies. The fuel pellet is prepared by processing nuclear fuel into a certain specification size, such as a sintered uranium dioxide pellet, and has a preset theoretical density. A plurality of fuel pellets are stacked axially into the clad along the clad and an axial compression force is generated by the compression assembly to maintain the fuel pellets in axial contact with each other and prevent axial dislodgement of the fuel pellets during handling and transportation. The hold-down assembly comprises, for example, a hold-down spring. The end plug assembly is used to close or seal both ends of the containment shell.
The fuel element cladding and hold-down assembly are typically assembled by fitting the hold-down assembly (e.g., hold-down spring) over the transmission shaft, securing the cladding after it has been transported to a predetermined position by the transmission line, and then pushing the hold-down assembly into the cladding using the power plant. This operation is usually carried out in a production line, limiting the occasions where the fuel elements are assembled, for example in some cases where the fuel elements are not suitable for being lifted out of the reactor, where the assembly or disassembly of the hold-down assembly and the cladding by the above-mentioned method will not be possible. In addition, it is not easy to determine the degree or effect of assembly between the compression assembly and the cladding using the above method, which in turn affects the effectiveness of the fuel element.
According to the device for operating the pressing component, the pressing component is clamped by the clamping piece, the pressing component can be conveniently operated to move the pressing component, such as the pressing component is installed in a cladding or taken out of the cladding, the situation of fuel elements is not limited, the pressing component can be conveniently operated at any time, and the pressing component can be conveniently operated in a close range; the distance between the two clamping parts is adjusted through the operating part, so that the pressing assembly is clamped or released through the two clamping parts, the operation is simple and fast, and the work efficiency is improved.
Referring to fig. 1-5, an apparatus for operating a compaction assembly for compacting fuel pellets in clad fuel elements during installation thereof according to an embodiment of the application includes: the clamping piece comprises two oppositely arranged clamping parts, and the two clamping parts are used for clamping the pressing assembly so as to load the pressing assembly into the cladding of the fuel element or take the pressing assembly out of the cladding; and the operating part is movably connected with the clamping part and used for operating the clamping part to adjust the distance between the two clamping parts.
As shown in fig. 1, the clamping member 10 includes two clamping portions 11 disposed opposite to each other, and it can be understood that the pressing assembly can be clamped or released by adjusting the distance between the two clamping portions 11, for example, when the distance between the two clamping portions 11 becomes smaller, the pressing assembly can be clamped, and at this time, the pressing assembly can be driven to move by the clamping device (i.e., the device for operating the pressing assembly), so that the pressing assembly does not fall off; after the pressing assembly is moved to a required position, when the distance between the two clamping parts 11 is relatively increased, the pressing assembly can be released, so that the pressing assembly is separated from the clamping device.
Utilize operating parts 20 to adjust the distance between two clamping parts 11, easy operation can satisfy and press from both sides tightly or loosen and compress tightly the subassembly, can prevent to compress tightly the subassembly and drop to can not produce destruction to its structure, greatly made things convenient for the operation to compress tightly the subassembly, compress tightly subassembly and cladding with the equipment.
In some embodiments, as shown in fig. 1, one of the two gripping portions 11 is movable relative to the other in a direction in which the two gripping portions 11 are oppositely disposed.
In some embodiments, adjusting the distance between two clamping portions 11 is satisfied by making at least one clamping portion 11 movable. For example, when one of the clamping portions 11 is movable relative to the other, the distance between the two clamping portions 11 is made smaller or larger by adjusting the clamping portion 11 to be closer to or farther from the other clamping portion 11. Or, for example, when both the gripping portions 11 are movable, both the gripping portions 11 may be adjusted to be closer to or farther from each other at the same time, or only either one of the gripping portions 11 may be adjusted to be movable relative to the other gripping portion 11.
Alternatively, when the distance between the two clamping portions 11 is adjusted by the operating member 20, a certain degree of force is applied to the clamping portions 11, so that an interaction force can be generated between the clamping portions 11 and the pressing assembly to clamp the pressing assembly to prevent the pressing assembly from falling off. When the pressing component needs to be released, the distance between the two clamping parts 11 can be slowly increased to stably release the pressing component at a required position.
In some embodiments, as shown in fig. 1, the clamping member 10 includes a first extension arm 101 and a second extension arm 102 disposed in parallel, and a connecting arm 103 connected between the first extension arm 101 and the second extension arm 102, and the two clamping portions 11 are respectively disposed at one ends of the first extension arm 101 and the second extension arm 102.
The first extension arm 101 and the second extension arm 102 provide a mounting and clamping space for the clamping portion 11, as shown in fig. 1, one end of the first extension arm 101 and the second extension arm 102 away from the operating member 20 is provided with the clamping portion 11, and the other end is connected through the connecting arm 103. The first extension arm 101, the second extension arm 102 and the connection arm 103 together form a space for clamping, and the first extension arm 101, the second extension arm 102 and the connection arm 103 together form a substantially inverted "U" shape.
Wherein, the structure of first extension arm 101 and second extension arm 102 can be the same, for example have the same size, and two clamping part 11 can set up respectively in the same position of first extension arm 101 and second extension arm 102 to two clamping part 11 symmetry sets up to the centre gripping compresses tightly the same height position of subassembly, is convenient for more fast, the stable clamp is tight to compress tightly the subassembly.
The first extension arm 101 and the second extension arm 102 are, for example, linear, and the connection arm 103 is, for example, arc-shaped. A larger clamping space can be provided by the arc-shaped connecting arm 103. Of course, the connecting arm 103 may also be linear.
One side of the connecting arm 103 near the first extending arm 101 and the second extending arm 102 may be provided with a sliding groove, and one end of the first extending arm 101 and/or the second extending arm 102 may be provided in the sliding groove, so that the sliding groove can provide a moving track for the first extending arm 101 and/or the second extending arm 102. For example, one of the first extension arm 101 and the second extension arm 102 may be disposed in a sliding slot, and the other may be integrally formed with the connecting arm 103, wherein the extension arm disposed in the sliding slot may move relative to the other along the sliding slot. Or for example, the first extension arm 101 and the second extension arm 102 are both disposed in the sliding chute, so that both the first extension arm 101 and the second extension arm 102 can move through the sliding chute.
In other embodiments, a slide or slide rail may be used in place of the above-described chute. Of course, the first extension arm 101 and the second extension arm 102 can be connected to the connection arm 103 by other methods as long as the distance between the first extension arm 101 and the second extension arm 102 is adjustable.
In some embodiments, the clamping portion 11 is disposed perpendicular to the first extension arm 101 or the second extension arm 102. As shown in fig. 1, the first extension arm 101 and the second extension arm 102 extend substantially in a vertical direction, and the holding portion 11 is connected to one end of the first extension arm 101 or the second extension arm 102 substantially in a horizontal direction. The clamping portion 11 may be, for example, cylindrical in shape, which is shaped to cooperate with the associated structure of the hold-down assembly to operate the hold-down assembly.
In other embodiments, the clamping portion 11 forms an included angle with the first extension arm 101 or the second extension arm 102, and the included angle ranges from greater than 0 degrees to less than 180 degrees.
It should be noted that the included angle between the clamping portion 11 and the first extension arm 101 or the second extension arm 102 is set according to actual requirements, so as to meet the requirement of conveniently clamping or clamping the compressing assembly.
In some embodiments, one of the first extension arm 101 and the second extension arm 102 is slidably connected to the connecting arm 103.
As shown in fig. 1, one side of the connecting arm 103 facing the first extending arm 101 and the second extending arm 102 may be provided with a sliding groove, a sliding rail or a sliding way, and one end of the first extending arm 101 and/or the second extending arm 102 may be provided in the sliding groove, the sliding rail or the sliding way, so that the first extending arm 101 and/or the second extending arm 102 can slide along the connecting arm 103 to adjust the distance between the two clamping portions 11.
In some embodiments, as shown in fig. 1 and 2, the holder 10 further comprises a third extension arm 104, one end of the third extension arm 104 being connected to the second extension arm 102; the operating member 20 includes an operating handle 21 and a connecting rod 22, one end of the connecting rod 22 is connected to the operating handle 21, and the other end is connected to the other end of the third extension arm 104, and when the operating handle 21 is operated, the operating handle 21 acts on the connecting rod 22 and the third extension arm 104 to adjust the second extension arm 102 to move towards or away from the first extension arm 101.
In the present embodiment, the second extension arm 102 is movable relative to the first extension arm 101, and the distance between the two clamping portions 11 is adjusted by adjusting the movement of the second extension arm 102 away from or close to the first extension arm 101. In the present embodiment, the distance between the two clamping portions 11 is adjusted by the operating member 20 as follows: when the operating handle 21 is held and applied with force, the third extension arm 104 pulls the second extension arm 102 to move towards the direction close to the first extension arm 101, and at the moment, the distance between the two clamping parts 11 is reduced, so that the clamping and compressing assembly can be satisfied; conversely, when the operating handle 21 is released, the third extending arm 104 pushes the second extending arm 102 to move away from the first extending arm 101, and at this time, the distance between the two clamping portions 11 is increased, which is sufficient for releasing the pressing assembly.
The third extension arm 104 and/or the first extension arm 101, the second extension arm 102, and the connection arm 103 are rigid, so that adverse effects caused by deformation can be avoided.
It is understood that in other embodiments, the first extension arm 101 is movable relative to the second extension arm 102, and the third extension arm 104 is connected to the first extension arm 101, and the first extension arm 101 is pulled or pushed by the third extension arm 104 to move the first extension arm 101 toward or away from the second extension arm 102.
In some embodiments, as shown in FIG. 1, the operating member 20 further comprises a spring 23, one end of the spring 23 is connected to the connecting rod 22, the other end of the spring 23 is connected to the connecting arm 103, the spring 23 is compressed when the operating handle 21 is held and applied with force, and the spring 23 releases energy to drive the second extension arm 102 away from the first extension arm 101 when the operating handle 21 is released.
In this embodiment, the connecting arm 103 includes an arc-shaped section and a linear section, and the spring 23 is connected to the linear section and substantially in the same straight line with the connecting rod 22. The spring 23 can improve the hand feeling of the operating clamp 10, for example, the structure of the pressing assembly can be prevented from being damaged due to the fact that the operating handle 21 is held by excessive force, so that the acting force between the two clamping parts 11 is large, and the spring 23 can play a role in buffering or limiting the single excessive force. When it is desired to release the hold down assembly, the operating handle 21 need only be released and the compressed spring 23 can then release energy to push the second extension arm 102 away from the first extension arm 101.
Next, a pressing assembly will be described, and the above-described apparatus for operating the pressing assembly can satisfy the structure of the mating pressing assembly to operate the pressing assembly.
Referring to fig. 3, 4(a) and 4(b), the pressing assembly 200 includes: a main body 210; an end plug 220 fixed to the main body 210; the spring 230 is sleeved on the main body 210, one end of the spring 230 abuts against the end plug 220, and the other end of the spring can be compressed.
When the compression assembly 200 is installed into the clad, one end of the spring 230 may abut the uppermost fuel pellet in the clad and, depending on the depth of installation of the fuel pellets in the clad, one end of the spring 230 is compressed until the compression assembly is assembled with the clad and compresses the fuel pellets.
In some embodiments, as shown in fig. 4(a) and 4(b), a first groove 212 and a second groove 213 are disposed at one end of the main body 210 close to the end plug 220, the first groove 212 and the second groove 213 are disposed in parallel and extend along the axial direction of the main body, the end plug 220 is sleeved on the main body 210, the end plug 220 is disposed with a through hole 221 along the peripheral wall, the end plug comprises a protrusion 222, the protrusion 222 protrudes out of the through hole 221 and is connected to one end of the first groove 212 and the second groove 213, a pressing portion 215 is formed between the first groove 212 and the second groove 213, and the protrusion 222 is compressed when the pressing portion 215 is disposed to press the pressing portion 215.
In some embodiments, as shown in fig. 3, the compression assembly further comprises a sleeve 240 slidably attached to an end of the body 210 distal the end plug 220 for urging the spring 230 to compress the spring 230. Wherein the body 210, which is correspondingly adjacent to the sleeve 240, is partially retracted within the sleeve 240 as the sleeve 240 pushes the spring 230 to compress the spring 230 so that the bottom of the sleeve 240 can abut the fuel pellets.
The fuel element cladding of the present application matches the structure of the hold-down assembly so that both can be satisfactorily assembled.
As shown in fig. 5, the fuel element can 310 is provided with an opening 312 at a location corresponding to the protrusion 222, and when the compression assembly is installed in the can, the protrusion 222 snaps into the opening 312.
In this embodiment, the fuel element 300 may include, for example, a cladding 310 into which a plurality of fuel pellets (not shown) are stacked axially along the cladding, and a lower end plug for closing the bottom of the cladding 310. The enclosure 310 is open at the top for loading and unloading the compression assembly. The circumferential surface of the casing 310 is provided with an opening 312 to engage the protrusion 222 of the compression assembly to secure the compression assembly. The openings 312 are, for example, two and spaced at the same height along the enclosure 310. Optionally, the two apertures 312 are symmetrically disposed with respect to a central axis of the enclosure. The aperture 312 may be, for example, oval or rectangular.
The number and shape of the openings 312 can match the number and shape of the protrusions 222, and the embodiment of the present application is not limited thereto.
According to fig. 1 to 5, the process of operating the hold-down assembly is: when the pressing assembly 200 is located outside the enclosure 310, the two clamping portions 11 correspond to the two pressing portions 215, the distance between the two clamping portions 11 is adjusted so that the two clamping portions 11 respectively contact the two pressing portions 215, and then the distance between the two clamping portions 11 is further reduced so that the clamping portions 11 press the pressing portions 215, at which time the two protrusions 222 of the pressing assembly 200 are compressed; holding the hold-down assembly 200 and moving it to the position of the enclosure 310, loading it into the enclosure 310; the pressing assembly 200 is rotated to make the position of the protrusion 222 face the opening 312, then the distance between the two clamping parts 11 is adjusted to be increased, at this time, the force acting on the pressing part 215 disappears, and the protrusion 222 is ejected and clamped into the opening 312, so that the assembly of the pressing assembly 200 and the enclosure 310 is completed.
By utilizing the matching of the opening 312 and the protrusion 222, for example, when the protrusion 222 is snapped into the opening 312, the completion of the assembly of the pressing assembly and the enclosure can be determined, so that the assembly degree can be easily determined by utilizing the device and the method of the present application, and the work efficiency can be improved.
On the contrary, when the pressing assembly 200 needs to be removed from the enclosure 310, the two clamping portions 11 correspond to the two protrusions 222, and then the distance between the two clamping portions 11 is adjusted to reduce the distance, at this time, the protrusions 222 are compressed, and the portions of the clamping portions 11 can extend into the openings 312 from the outside; releasing the tab 222, i.e., disengaging the clip 11 from the tab 222, enables the compression assembly 200 to be ejected from the enclosure 310 under the influence of the spring 230, thereby completing the removal of the compression assembly 200.
The device for operating the pressing assembly according to the embodiment of the application has the following beneficial technical effects:
the clamping component is clamped by the clamping piece, so that the clamping component can be conveniently operated to move the clamping component, such as loading the clamping component into a cladding or taking the clamping component out of the cladding, the situation of fuel elements is not limited, the clamping component can be conveniently operated at any time, and the clamping component can be conveniently operated in a short distance; the distance between the two clamping parts is adjusted through the operating part, so that the pressing assembly is clamped or released through the two clamping parts, the operation is simple and fast, and the work efficiency is improved.
The distance between the two clamping parts is adjusted to clamp the pressing assembly, so that the pressing assembly can be prevented from falling off, and the structure of the pressing assembly cannot be damaged.
The matching of the open hole and the bulge is utilized, the pressing assembly and the cladding can be easily assembled, and the work efficiency is further improved.
For the embodiments of the present application, it should also be noted that, in a case of no conflict, the embodiments of the present application and features of the embodiments may be combined with each other to obtain a new embodiment.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and the scope of the present application shall be subject to the scope of the claims.
Claims (11)
1. An apparatus for operating a compression assembly for compressing fuel pellets in a cladding of a fuel element when the cladding is loaded, comprising:
a clamping piece (10) comprising two oppositely arranged clamping parts (11), wherein the two clamping parts (11) are used for clamping the pressing assembly so as to load the pressing assembly into the cladding of the fuel element or take the pressing assembly out of the cladding;
the operating part (20) is movably connected to the clamping parts (10) and is used for operating the clamping parts (10) to adjust the distance between the two clamping parts (11).
2. The apparatus of claim 1,
one of the two clamping portions (11) is movable relative to the other in a direction in which the two clamping portions are oppositely disposed.
3. The apparatus of claim 1,
the clamping piece (10) comprises a first extension arm (101) and a second extension arm (102) which are arranged in parallel, and a connecting arm (103) connected between the first extension arm (101) and the second extension arm (102),
the two clamping parts (11) are respectively arranged at one corresponding end of the first extension arm (101) and the second extension arm (102).
4. The apparatus of claim 3,
the clamping portion (11) is perpendicular to the first extension arm (101) or the second extension arm (102).
5. The apparatus of claim 3,
one of the first extension arm (101) and the second extension arm (102) is slidably connected to the connecting arm (103).
6. The apparatus of claim 3,
the clamping piece (10) further comprises a third extension arm (104), one end of the third extension arm (104) is connected to the second extension arm (102);
the operating member (20) comprises an operating handle (21) and a connecting rod (22),
one end of the connecting rod (22) is connected to the operating handle (21), the other end of the connecting rod is connected to the other end of the third extension arm (104), and when the operating handle (21) is operated, the operating handle (21) acts on the connecting rod (22) and the third extension arm (104) to adjust the second extension arm (102) to move towards or away from the first extension arm (101).
7. The apparatus of claim 6,
the operating piece (20) further comprises a spring (23), one end of the spring (23) is connected to the connecting rod (22), the other end of the spring (23) is connected to the connecting arm (103),
when the operating handle (21) is held and applied with force, the spring (23) is compressed, and when the operating handle (21) is released, the spring (23) releases energy to drive the second extension arm (102) to be far away from the first extension arm (101).
8. The apparatus according to any one of claims 1 to 7,
the compression assembly (200) comprises:
a main body (210);
an end plug (220) fixed to the main body (210);
the spring (230) is sleeved on the main body (210), one end of the spring (230) is abutted against the end plug (220), and the other end of the spring can be compressed.
9. The apparatus of claim 8,
the main body (210) is provided with a first groove (212) and a second groove (213) near one end of the end plug (220), the first groove (212) and the second groove (213) are arranged in parallel and extend along the axial direction of the main body,
the end plug (220) is sleeved on the main body (210), a through hole (221) is arranged along the peripheral wall of the end plug (220), the end plug comprises a protrusion (222), the protrusion (222) protrudes out of the through hole (221) and is connected with one end of the first groove (212) and one end of the second groove (213),
a pressing portion (215) is formed between the first groove (212) and the second groove (213), and the pressing portion (215) is configured such that the protrusion (222) is compressed when the pressing portion (215) is pressed.
10. The apparatus of claim 8,
the compression assembly further comprises a sleeve (240) slidably connected to an end of the body (210) remote from the end plug (220) for urging the spring (230) to compress the spring (230).
11. The apparatus of claim 9,
the position of the cladding (310) of the fuel element corresponding to the protrusion (222) is provided with an opening (312), and when the pressing component is installed in the cladding, the protrusion (222) is clamped into the opening (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474424.8A CN114043430A (en) | 2021-12-03 | 2021-12-03 | Device for operating a hold-down assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111474424.8A CN114043430A (en) | 2021-12-03 | 2021-12-03 | Device for operating a hold-down assembly |
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| CN114043430A true CN114043430A (en) | 2022-02-15 |
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|---|---|---|---|
| CN202111474424.8A Pending CN114043430A (en) | 2021-12-03 | 2021-12-03 | Device for operating a hold-down assembly |
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| CN113370141A (en) * | 2021-07-23 | 2021-09-10 | 华能平凉发电有限责任公司 | PC connects gas source pipe and dismantles frock |
| CN214265426U (en) * | 2020-12-01 | 2021-09-24 | 叶雯 | Household auxiliary device for replacing lamp |
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| CN214265426U (en) * | 2020-12-01 | 2021-09-24 | 叶雯 | Household auxiliary device for replacing lamp |
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