CN213561287U - Punching tool for waist-shaped crack-stopping hole of steel - Google Patents
Punching tool for waist-shaped crack-stopping hole of steel Download PDFInfo
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- CN213561287U CN213561287U CN202021644730.2U CN202021644730U CN213561287U CN 213561287 U CN213561287 U CN 213561287U CN 202021644730 U CN202021644730 U CN 202021644730U CN 213561287 U CN213561287 U CN 213561287U
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Abstract
The utility model provides a punching tool for a steel waist-shaped crack-stopping hole, which comprises a waist-shaped positioning plate and a waist-shaped limiting buckle; the size of the waist-shaped positioning plate is the same as that of the waist-shaped crack-stopping hole; the waist-shaped positioning plate comprises two straight edges and two semi-circular arc edges; the size of the outer contour of the waist-shaped pipe limiting buckle is the same as that of the waist-shaped crack-stopping hole; the waist-shaped pipe limiting buckle comprises two straight line sections and two semi-circular arc sections; the upper end surfaces of the two straight line segment stages and the two semicircular arc segments are positioned on the same plane; the axial lengths of the two semicircular arc sections are the same; the axial lengths of the two straight line segments are the same; the axial length of the semicircular arc section is greater than that of the straight section. The utility model discloses a waist shape locating plate accurate positioning position punching position, through waist shape pipe spacing knot accurate limited polishing region, simplified operating procedure greatly, improve the fault-tolerant rate of punching, completion waist shape of high efficiency, high accuracy only cracks punching in hole.
Description
Technical Field
The utility model belongs to steel construction fatigue crack field, specifically speaking relate to a frock of punching that is used for steel waist shape to only split hole.
Background
The drilling crack arrest is the most common fatigue crack maintenance means, and by drilling near the crack tip, the stress concentration of the height of the crack tip can be effectively reduced, the crack propagation can be greatly delayed, the more obvious the stress concentration reduction degree is, and the better the crack arrest effect is. Relevant researches show that the larger the radius of the crack arrest hole is, the better the effect of reducing stress concentration is; but the increase of the radius of the circular hole can weaken the bearing capacity of the section and is not beneficial to the stress of the structure. Meanwhile, the punching fault tolerance of the circular hole is low, the lower the fault tolerance is, the higher the requirement on the detection precision of the accurate position of the crack tip is, and the detection cost can be increased undoubtedly. The waist-shaped crack-stopping hole can improve the punching fault-tolerant rate and reduce the weakening degree of the residual section, but the process difficulty of drilling the waist-shaped hole by using an electric drill is higher, and the processing cost is increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a frock of punching for steel waist shape crack arrest hole has simplified operating procedure greatly, improves the fault-tolerant rate of punching, and completion waist shape crack arrest hole of high efficiency, high accuracy punches.
The technical scheme is as follows: the utility model provides a punching tool for a steel waist-shaped crack-stopping hole, which comprises a waist-shaped positioning plate and a waist-shaped limiting buckle;
the size of the waist-shaped positioning plate is the same as that of the waist-shaped crack-stopping hole; the waist-shaped positioning plate comprises two straight edges and two semi-circular arc edges;
the size of the outer contour of the waist-shaped pipe limiting buckle is the same as that of the waist-shaped crack-stopping hole; the waist-shaped pipe limiting buckle comprises two straight line sections and two semi-circular arc sections; the upper end surfaces of the two straight line segment stages and the two semicircular arc segments are positioned on the same plane; the axial lengths of the two semicircular arc sections are the same; the axial lengths of the two straight line segments are the same; the axial length of the semicircular arc section is greater than that of the straight section.
Furthermore, the waist-shaped positioning plate is respectively provided with positioning holes at the circle centers of the two semicircular arc edges.
Furthermore, the waist-shaped positioning plate is provided with a positioning line along the perpendicular bisector of the two straight line edges.
Has the advantages that: the utility model discloses a waist shape locating plate accurate positioning position punching position, through waist shape pipe spacing knot accurate limited polishing region, simplified operating procedure greatly, improve the fault-tolerant rate of punching, completion waist shape of high efficiency, high accuracy only cracks punching in hole.
Drawings
FIG. 1 is a schematic structural view of a waist-shaped positioning plate of the present invention;
FIG. 2 is a schematic structural view of the waist-shaped tube stop buckle of the present invention;
fig. 3 is a schematic structural diagram of the present invention in the state of step S1;
fig. 4 is a schematic structural diagram of the present invention in the state of step S2;
fig. 5 is a schematic structural diagram of the present invention in the state of step S3;
fig. 6 is a schematic structural view of a kidney-shaped crack arrest hole drilled by the utility model.
Detailed Description
Like fig. 1 and fig. 2, the utility model provides a frock of punching that is used for steel waist shape to stop splitting hole, including waist shape locating plate and waist shape spacing knot.
The size of the waist-shaped positioning plate is the same as that of the waist-shaped crack-stopping hole; the waist-shaped positioning plate comprises two straight edges 101 and two semi-circular arc edges 102. The waist-shaped positioning plate is provided with positioning holes 103 at the circle centers of the two semi-circular arc edges 102 respectively; the waist-shaped positioning plate is provided with a positioning line 104 along the perpendicular bisector of the two straight line sides 101.
The size of the outer contour of the waist-shaped pipe limiting buckle is the same as that of the waist-shaped crack-stopping hole; the waist-shaped pipe limiting buckle comprises two straight line sections 201 and two semi-circular arc sections 202; the upper end surfaces of the two straight line sections 201 and the two semicircular arc sections 202 are positioned on the same plane; the axial lengths of the two semicircular arc sections 202 are the same; the axial lengths of the two straight sections 201 are the same; the axial length of the semicircular arc section 202 is greater than the axial length of the straight section 201.
The utility model discloses a use method includes following step:
s1, as shown in figure 3, determining a punching position on the expansion path 4 of the fatigue crack 3, positioning the positioning line 104 and the expansion path 4 in a positioning overlapping mode, and attaching the waist-shaped positioning plate at the punching position; respectively drilling circular holes at two ends in the two positioning holes 103 by using a drilling machine; the portion of the residual steel sheet 5 between the two straight edges 101 is not removed in the two drilling.
S2, as shown in figure 4, inserting the parts of the two semicircular arc sections 202 of the waist-shaped pipe limit buckle, which protrude out of the lower end surfaces of the straight line sections 201, into circular holes at two ends; the two semicircular arc sections 202 are matched with the circular holes at the two ends to realize the limit of the waist-shaped pipe on the crack plane of the steel; the two straight line sections 201 are pressed on the residual steel 5, so that the limitation of the waist-shaped pipe in the direction vertical to the plane of the steel cracks is realized.
S3, as shown in figure 5, a drilling machine is used in combination with a grinding machine with a grinding wheel head to polish and remove the residual steel 5 in the inner cavity area of the waist-shaped pipe limit buckle; a kidney-shaped crack stop hole 6 as shown in fig. 6 is drilled.
Claims (3)
1. The utility model provides a frock of punching that is used for steel waist shape to stop a crack hole which characterized in that: comprises a waist-shaped positioning plate and a waist-shaped limit buckle;
the size of the waist-shaped positioning plate is the same as that of the waist-shaped crack-stopping hole; the waist-shaped positioning plate comprises two straight edges (101) and two semi-circular arc edges (102);
the size of the outer contour of the waist-shaped pipe limiting buckle is the same as that of the waist-shaped crack-stopping hole; the waist-shaped pipe limiting buckle comprises two straight line sections (201) and two semi-circular arc sections (202); the upper end surfaces of the two straight line sections (201) and the two semi-circular arc sections (202) are positioned on the same plane; the axial lengths of the two semicircular arc sections (202) are the same; the axial lengths of the two straight line segments (201) are the same; the axial length of the semicircular arc section (202) is larger than that of the straight section (201).
2. The punching tool for the kidney-shaped crack arrest hole of the steel according to claim 1, characterized in that: the waist-shaped positioning plate is provided with positioning holes (103) at the circle centers of the two semicircular arc edges (102).
3. The punching tool for the kidney-shaped crack arrest hole of the steel according to claim 2, characterized in that: the waist-shaped positioning plate is provided with a positioning line (104) along the perpendicular bisector of the two straight line edges (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021644730.2U CN213561287U (en) | 2020-08-10 | 2020-08-10 | Punching tool for waist-shaped crack-stopping hole of steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021644730.2U CN213561287U (en) | 2020-08-10 | 2020-08-10 | Punching tool for waist-shaped crack-stopping hole of steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213561287U true CN213561287U (en) | 2021-06-29 |
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ID=76555434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021644730.2U Active CN213561287U (en) | 2020-08-10 | 2020-08-10 | Punching tool for waist-shaped crack-stopping hole of steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213561287U (en) |
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2020
- 2020-08-10 CN CN202021644730.2U patent/CN213561287U/en active Active
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