CN211540059U - A anchor clamps that is used for quick clamping that fuel assembly skeleton was made - Google Patents
A anchor clamps that is used for quick clamping that fuel assembly skeleton was made Download PDFInfo
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- CN211540059U CN211540059U CN201922374220.1U CN201922374220U CN211540059U CN 211540059 U CN211540059 U CN 211540059U CN 201922374220 U CN201922374220 U CN 201922374220U CN 211540059 U CN211540059 U CN 211540059U
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- positioning
- fuel assembly
- rod
- clamping
- frame
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Abstract
The utility model belongs to the technical field of fuel assembly manufacturing, in particular to a quick clamping fixture for fuel assembly framework manufacturing, which comprises a positioning part and a clamping part, wherein the positioning part comprises a positioning grid, a positioning rod and a U-shaped frame, and the clamping part comprises an eccentric wheel, a connecting rod and a screw rod; the device has two sets of 4 screw rods, and the device both sides are located respectively to every group, and screw rod one end is inserted the grid cell hole of spacer grid, and the other end and the vertical part threaded connection in U-shaped frame both sides, and the tip of two screw rods of every group passes through connecting rod installation eccentric wheel, and this device can improve the clamping speed of framework, realizes that clamping power is adjustable, reduces operating personnel intensity of labour, increase frock life, improves product manufacturing accuracy.
Description
Technical Field
The utility model belongs to the technical field of fuel assembly makes, concretely relates to anchor clamps that are used for quick clamping that fuel assembly skeleton was made.
Background
When the fuel assembly framework is welded, the grillwork needs to be accurately positioned, then inserted into the guide pipe, and then welded. The assembly position of the framework directly influences the manufacturing precision of the framework, the framework is mainly positioned in a screw clamping mode in the prior art, and the framework is required to be overturned ten times in the welding process of the framework to complete welding of all welding points. Each turn is accompanied with the disassembly and assembly of the screw rod, and the time used in the disassembly-assembly process of the screw rod is far longer than the time used in the actual manufacture of the framework, thereby influencing the production efficiency. After the framework is welded, the framework can deform in the direction far away from the positioning surface due to the existence of welding stress, the deformation enables the screw to be disassembled again or screwed down by far large force for initial assembly, the labor intensity of operators is increased, the framework is difficult to pull back the positioning surface by manpower, and the manufacturing precision of the framework is influenced. Too large assembly force makes the screw rod and the threaded hole of locating surface fragile, and the screw hole needs the flatness of four locating surfaces of adjustment and the span between the frame when changing, greatly influences production efficiency, has increased manufacturing cost.
Disclosure of Invention
The utility model aims at providing an anchor clamps of quick clamping for fuel assembly skeleton is made, its clamping speed that can improve the framework realizes that clamping power is adjustable, reduces operating personnel intensity of labour.
The technical scheme of the utility model as follows:
a fixture for quickly clamping a fuel assembly framework comprises a positioning part and a clamping part, wherein the positioning part comprises a positioning grid frame, a positioning rod and a U-shaped frame, the positioning grid frame is fixedly arranged in front of the U-shaped frame, the positioning rod is arranged between the positioning grid frame and the U-shaped frame, one end of the positioning rod is connected with the U-shaped frame through threads, and the other end of the positioning rod is fixed with the positioning grid frame; the positioning lattice frame is of a plate-shaped structure with cell holes; grooves in the horizontal direction are formed in the vertical parts on the two sides of the U-shaped frame; the clamping part comprises an eccentric wheel, a connecting rod and a screw rod; the device is characterized in that the number of the screw rods is two, 4 screw rods are arranged on each group, one end of each screw rod is inserted into a grid cell hole of the positioning grid frame, the other end of each screw rod is in threaded connection with the vertical parts on the two sides of the U-shaped frame, the groove for processing the vertical parts on the two sides of the U-shaped frame is positioned between the two screw rods of each group, the end parts of the two screw rods of each group are provided with eccentric wheels through connecting rods, and the horizontal positions of the eccentric wheels.
The vertical parts on two sides of the U-shaped frame are in threaded connection with the connecting rod, threaded through holes are machined in the upper end and the lower end of the connecting rod, and the connecting rod is in threaded connection with the screw.
And a locking nut is arranged at one end of the screw rod connected with the connecting rod.
And the screw is positioned at one end of the positioning grid frame and is provided with a chamfer.
The clamping part comprises a pressing plate, the pressing plate is positioned on one side of the location grid, and one end of the screw rod is inserted into the grid cell hole of the location grid and is clamped and positioned through the pressing plate.
The pressing plate is provided with a U-shaped groove, and the U-shaped groove is matched with the end part of the screw rod to clamp the screw rod.
The two ends of the pressing plate are provided with through holes, gaskets are assembled in the through holes, and the gaskets are located between the pressing plate and the location grid work.
The positioning part comprises a V-shaped groove which is arranged in front of the U-shaped frame and below the positioning grillwork, the lower end of the positioning grillwork is V-shaped and matched with the V-shaped groove in the lower part, and the lower end of the positioning grillwork is tightly attached to the V-shaped groove.
The utility model discloses an effect as follows: through designing and positioning and clamping two parts, the clamping speed of the grillwork is improved, the clamping force is adjustable, the labor intensity of operators is reduced, the service life of the tool is prolonged, and the manufacturing precision of products is improved. The positioning part has a screw rod clamping function, the clamping part enables the eccentric wheel to press the U-shaped frame through the matching of the eccentric wheel and the screw rod, the diameter change of the eccentric wheel enables the eccentric wheel to push the connecting rod to enable the pull rod to move backwards, and then the pressing plate is pulled to press the grillwork. When the device is disassembled, the eccentric wheel is rotated in the direction, and the pressure plate can be taken out to complete the disassembly when the pull rod becomes loose. Simple structure, low cost, easy operation, reasonable in design.
Drawings
FIG. 1 is a schematic view of a quick-clamping fixture for fuel assembly skeleton fabrication;
in the figure: 1. a screw; 2. an eccentric wheel; 3. a connecting rod; 4, a U-shaped frame; 5. a spacer grid; 6. pressing a plate; a V-shaped groove; 8. a nut; 9. positioning a rod; 10. a gasket; 11. and locking the nut.
Detailed Description
The present invention will be further explained with reference to the drawings and the detailed description.
As shown in fig. 1, the jig includes a positioning portion and a holding portion.
The positioning part comprises a positioning lattice frame 5, a positioning rod 9, a U-shaped frame 4 and a V-shaped groove 7.
The V-shaped groove 7 is fixedly arranged in front of the U-shaped frame 4, the positioning grillwork 5 is arranged on the V-shaped groove 7, and the positioning rod 9 is arranged between the positioning grillwork 5 and the U-shaped frame 4.
The four positioning rods 9 can be arranged and evenly distributed on four corners of the installation surfaces of the positioning grillwork 5 and the U-shaped frame 4, so that the positioning part connection is firmly and evenly accepted. One end of the positioning rod 9 is connected with the U-shaped frame 4 through threads and locked through a nut 8, and the positioning rod 9 is perpendicular to the installation surface of the U-shaped frame 4. The other end of the positioning rod 9 is fixed with the positioning grid 5.
The spacer grid 5 is a plate-shaped structure with grid cell holes, the lower end of the spacer grid is V-shaped and matched with the V-shaped groove 7 at the lower part in shape, so that the lower end of the spacer grid 5 is tightly attached to the V-shaped groove 7.
The vertical parts at the two sides of the U-shaped frame 4 are provided with grooves in the horizontal direction.
The clamping part comprises an eccentric wheel 2, a connecting rod 3, a screw rod 1 and a pressing plate 6.
The screw rod 1 has two sets of 4, and every group is installed respectively in the both sides of device, and screw rod 1 one end is inserted the grid cell hole of spacer grid 5 to through clamp plate 6 card dead location, the other end and the vertical portion threaded connection in the both sides of U-shaped frame 4. The groove processed by the vertical parts at the two sides of the U-shaped frame 4 is positioned between the two screw rods of each group.
The other end of each group of two screw rods is provided with an eccentric wheel 2 through a connecting rod 3, and the horizontal position of the eccentric wheel 2 corresponds to the groove. The vertical parts at two sides of the U-shaped frame 4 are in threaded connection with the connecting rod 3, and the upper end and the lower end of the connecting rod 3 are locked through the locking nuts 11 so as to be fixed relative to the end part of the screw rod 1.
The eccentric 2 has a self-locking property, in the present embodiment the diameter D is designed to be 37mm, and the eccentricity D is designed to be 2 mm.
The eccentric wheel 2 and the groove of the U-shaped frame 4, the connecting rod 3 and the eccentric wheel 2 are in clearance fit, so that the screw rod 1 is ensured to do linear motion when the eccentric wheel 2 rotates.
Threaded through holes are processed at the upper end and the lower end of the connecting rod 3, the connecting rod is in threaded connection with the screw rod 1, and the connecting rod is fixedly locked by a locking nut 12.
And one end of the screw 1, which is positioned at the positioning grid 5, is provided with a chamfer, so that the screw 1 can conveniently extend into and withdraw from grid cells of the grid.
The pressing plate 6 is provided with a U-shaped milled groove matched with the screw rod 1, and the pressing plate stably clamps the end part of the screw rod 1 and is convenient to disassemble. Through holes are formed in two ends of the pressing plate 6, the gasket 10 made of polyethylene is assembled in the holes, the grid is compressed by the pressure of the gasket 10 acting on the positioning grid 5, and the gasket 10 can prevent the positioning grid 5 from being scratched in the loosening and clamping process.
Claims (8)
1. The utility model provides a anchor clamps that is used for quick clamping of fuel assembly skeleton to make, includes location portion and clamping part, its characterized in that: the positioning part comprises a positioning lattice frame (5), a positioning rod (9) and a U-shaped frame (4), the positioning lattice frame (5) is fixedly arranged in front of the U-shaped frame (4), the positioning rod (9) is arranged between the positioning lattice frame (5) and the U-shaped frame (4), one end of the positioning rod (9) is connected with the U-shaped frame (4) through threads, and the other end of the positioning rod is fixed with the positioning lattice frame (5); the positioning lattice frame (5) is of a plate-shaped structure with cell holes; grooves in the horizontal direction are formed in the vertical parts on the two sides of the U-shaped frame (4); the clamping part comprises an eccentric wheel (2), a connecting rod (3) and a screw (1); screw rod (1) have two sets of 4, install both sides respectively for every group, screw rod (1) one end is inserted the grid cell hole of spacer grid (5), the other end and the vertical partial threaded connection in U-shaped frame (4) both sides, the groove of the vertical partial processing in U-shaped frame (4) both sides be located between two screws of every group, eccentric wheel (2) are installed through connecting rod (3) to the tip of two screws of every group, and the horizontal position of eccentric wheel (2) with the groove correspond.
2. A quick-clamping fixture for use in the manufacture of fuel assembly frames as claimed in claim 1, wherein: the vertical parts of two sides of the U-shaped frame (4) are in threaded connection with the connecting rod (3), threaded through holes are machined in the upper end and the lower end of the connecting rod (3), and the connecting rod and the screw (1) are in threaded connection.
3. A quick-clamping fixture for use in the manufacture of fuel assembly frames as claimed in claim 2, wherein: and a locking nut (11) is arranged at one end of the screw rod (1) connected with the connecting rod (3).
4. A quick-clamping fixture for use in the manufacture of fuel assembly frames as claimed in claim 1, wherein: and one end of the screw (1) positioned on the positioning grid (5) is provided with a chamfer.
5. A quick-clamping fixture for use in the manufacture of fuel assembly frames as claimed in claim 1, wherein: the clamping part comprises a pressing plate (6), the pressing plate (6) is positioned on one side of the positioning grid frame (5), and one end of the screw rod (1) is inserted into a grid cell hole of the positioning grid frame (5) and is clamped and positioned through the pressing plate (6).
6. A quick-clamping fixture for manufacturing a fuel assembly skeleton according to claim 5, wherein: the pressing plate (6) is provided with a U-shaped groove, and the U-shaped groove is matched with the end part of the screw rod (1) to block the screw rod (1).
7. A quick-clamping fixture for manufacturing a fuel assembly skeleton according to claim 5, wherein: both ends of the pressing plate (6) are provided with through holes, gaskets (10) are assembled in the through holes, and the gaskets (10) are positioned between the pressing plate (6) and the positioning grillwork (5).
8. A quick-clamping fixture for use in the manufacture of fuel assembly frames as claimed in claim 1, wherein: the positioning part comprises a V-shaped groove (7) which is arranged in front of the U-shaped frame (4) and below the positioning grillwork (5), the lower end of the positioning grillwork (5) is V-shaped and matched with the V-shaped groove (7) below in shape, and the lower end of the positioning grillwork (5) is tightly attached to the V-shaped groove (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922374220.1U CN211540059U (en) | 2019-12-26 | 2019-12-26 | A anchor clamps that is used for quick clamping that fuel assembly skeleton was made |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922374220.1U CN211540059U (en) | 2019-12-26 | 2019-12-26 | A anchor clamps that is used for quick clamping that fuel assembly skeleton was made |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211540059U true CN211540059U (en) | 2020-09-22 |
Family
ID=72509702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922374220.1U Active CN211540059U (en) | 2019-12-26 | 2019-12-26 | A anchor clamps that is used for quick clamping that fuel assembly skeleton was made |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211540059U (en) |
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2019
- 2019-12-26 CN CN201922374220.1U patent/CN211540059U/en active Active
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