CN216718069U - Four-point bending fatigue strength detection device - Google Patents
Four-point bending fatigue strength detection device Download PDFInfo
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- CN216718069U CN216718069U CN202123278722.8U CN202123278722U CN216718069U CN 216718069 U CN216718069 U CN 216718069U CN 202123278722 U CN202123278722 U CN 202123278722U CN 216718069 U CN216718069 U CN 216718069U
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- fatigue strength
- point bending
- bending fatigue
- slider
- detection device
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Abstract
The utility model relates to the technical field of medical instrument inspection and detection, in particular to a four-point bending fatigue strength detection device which comprises a base body, a sliding block and a supporting block, wherein an installation groove with an opening on the upper end surface is formed in the base body in a penetrating mode, the sliding block is installed in the installation groove in a sliding mode, the upper end surface of the sliding block does not leak out of the installation groove, the supporting block is connected with a sliding block bolt, the lower end surface of the supporting block abuts against the upper end surface of the base body, a cylindrical arc surface is arranged at the top of the supporting block, the axis of the cylindrical arc surface is perpendicular to the length direction of the base body, and the supporting block and the sliding block are respectively provided with two groups.
Description
Technical Field
The utility model relates to the technical field of medical instrument inspection and detection, in particular to a four-point bending fatigue strength detection device.
Background
In order to ensure the strength and fatigue strength of medical instruments, the fatigue strength of products is generally tested by repeatedly bending the products on special equipment until the products are subjected to fatigue failure, and the fatigue resistance of the products is evaluated by counting the number of times of bending. For a long strip-shaped or flat-shaped test piece, a common fatigue strength detection device is a four-point bending special tool, the tool needs to be frequently replaced according to different products, the tool is large in size and weight, the replacement and adjustment work strength is high, certain danger is caused by manual disassembly in the replacement process, the use cost of the tool is high, and the detection device with a common structure cannot meet the inspection requirement along with the increase of the product types.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior problems, the utility model provides a four-point bending fatigue strength detection device.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the four-point bending fatigue strength detection device comprises a base body, a sliding block and supporting blocks, wherein an installation groove with an open upper end face is formed in the base body in a penetrating mode, the sliding block is installed in the installation groove in a sliding mode, the upper end face of the sliding block does not leak out of the installation groove, the supporting blocks are connected with the sliding block through bolts, the lower end faces of the supporting blocks are abutted to the upper end face of the base body, a cylindrical arc face is arranged at the top of each supporting block, the axis of the cylindrical arc face is perpendicular to the length direction of the base body, and the supporting blocks and the sliding block are arranged in two groups.
Specifically, the four-point bending fatigue strength detection device is provided with two groups of devices which are used in pairs and are respectively and relatively installed on an upper pressure head and a lower pressure head of special test equipment, the supporting block and the sliding block are slidably installed in the installation groove, the position of the supporting block in the installation groove is adjusted according to the requirement of a product test point, after the connecting bolt of the supporting block and the connecting bolt of the sliding block are locked, the supporting block, the sliding block and the base body are fixedly connected into a whole, and then a test piece is placed between the cylindrical cambered surfaces of the upper detection device and the lower detection device, so that the fatigue strength detection can be carried out. When different products are replaced for testing, only the connecting bolt needs to be loosened and the positions of the supporting block and the sliding block need to be adjusted, and the whole detection device does not need to be dismounted.
According to another embodiment of the utility model, the mounting groove is a T-shaped groove or a dovetail groove, and the sliding block is matched with the mounting groove. The T-shaped groove or dovetail groove positioning structure facilitates sliding adjustment of the sliding block and is stable to mount.
According to another embodiment of the utility model, the roller bearing further comprises mounting blocks fixedly arranged on two sides of the supporting block, the cylindrical cambered surface is formed by a roller, and the roller is rotatably mounted between the two mounting blocks. Through the cylindricality cambered surface that sets up to the roller structure, reduce the wearing and tearing of cylindricality cambered surface to the test piece, prevent that the wearing and tearing position from influencing the accuracy of fatigue strength testing result.
According to another embodiment of the utility model, further comprising that the upper edge of the mounting block is higher than the top of the cylindrical cambered surface. Through this setting prevent among the test procedure test piece to the slow skew of both ends of cylindricality cambered surface or even drop.
According to another embodiment of the present invention, a base is fixedly connected to the lower portion of the base, and a connecting flange is provided at the lower end of the base. Through setting up flange, make things convenient for being connected of detection device and special test equipment's pressure head, simplify the structure of base member.
According to another embodiment of the utility model, the support block and the sliding block are connected through a bolt, and the bolt is located in the middle of the sliding block. The supporting block and the sliding block can rotate by a certain angle conveniently by being connected and locked by a bolt, and the test piece can be suitable for a test piece with a certain bending part in the direction of the supporting plane of the cylindrical cambered surface.
The device has the advantages that the supporting block and the sliding block are slidably arranged in the mounting groove, the position of the supporting block in the mounting groove is adjusted according to the requirement of a product test point, and the supporting block, the sliding block and the base body are connected and fixed into a whole after the connecting bolt of the supporting block and the sliding block is locked.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic lengthwise cross-sectional view of the present invention;
FIG. 3 is a schematic sectional view along the axis of the cylinder arc;
fig. 4 is a schematic view of the present invention in use in pairs.
In the figure, a base 1, a base body 2, a mounting groove 21, a sliding block 3, a supporting block 4, a cylindrical cambered surface 41, a mounting block 42 and a test piece 5.
Detailed Description
As shown in fig. 1-4, which are schematic structural diagrams of the present invention, a four-point bending fatigue strength detecting device includes a base body 2, a slider 3 and two sets of supporting blocks 4, wherein an installation groove 21 with an open upper end surface is formed in the base body 2 in a penetrating manner, the slider 3 is slidably installed in the installation groove 21, the upper end surface of the slider does not leak out of the installation groove 21, the supporting blocks 4 are connected with the slider 3 by bolts, the lower end surface of the supporting blocks is abutted against the upper end surface of the base body 2, a cylindrical arc surface 41 is formed at the top of the supporting blocks 4, the axis of the cylindrical arc surface 41 is perpendicular to the length direction of the base body 2, and two sets of the supporting blocks 4 and the slider 3 are provided.
The sliding block 3 can only slide in the mounting groove 21 and can not be directly pulled out from the opening.
Preferably, the mounting groove 21 is a T-shaped groove or a dovetail groove, and the sliding block 3 is matched with the mounting groove.
Preferably, the two sides of the supporting block 4 are fixedly provided with mounting blocks 42, the cylindrical arc surface 41 is formed by a roller, and the roller is rotatably mounted between the two mounting blocks 42. The rollers are preferably made of a soft metal, such as copper or a copper alloy.
Preferably, the upper edge of the mounting block 42 is higher than the top of the arc-shaped cylindrical surface 41.
Preferably, a base 1 is fixedly connected below the base body 2, and a connecting flange is arranged at the lower end of the base 1. The base 1 is connected with the base body 2 through bolts.
Preferably, the supporting block 4 is connected with the sliding block 3 through a bolt, and the bolt is located in the middle of the sliding block 3.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (6)
1. The utility model provides a four-point bending fatigue strength detection device, characterized by, including base member (2), slider (3) and supporting shoe (4), run through on base member (2) and be equipped with up end open-ended mounting groove (21), slider (3) slidable mounting is in mounting groove (21), and its up end does not spill mounting groove (21), supporting shoe (4) and slider (3) bolted connection, and its down end butt on the up end of base member (2), the top of supporting shoe (4) is equipped with cylindricality cambered surface (41), the axis of cylindricality cambered surface (41) is perpendicular to the length direction of base member (2), supporting shoe (4) and slider (3) all have two sets ofly.
2. The four-point bending fatigue strength detection device according to claim 1, wherein the mounting groove (21) is a T-shaped groove or a dovetail groove, and the slider (3) is matched therewith.
3. The four-point bending fatigue strength detecting device according to claim 1, wherein mounting blocks (42) are fixedly arranged on both sides of the supporting block (4), the cylindrical arc surface (41) is formed by a roller, and the roller is rotatably mounted between the two mounting blocks (42).
4. The four-point bending fatigue strength detecting device according to claim 3, wherein the upper edge of the mounting block (42) is higher than the top of the cylindrical arc surface (41).
5. The four-point bending fatigue strength detection device according to claim 1, wherein a base (1) is fixedly connected to the lower portion of the base (2), and a connecting flange is provided at the lower end of the base (1).
6. The four-point bending fatigue strength detecting device according to claim 1, wherein the supporting block (4) is connected with the slider (3) by a bolt, and the bolt is located in the middle of the slider (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123278722.8U CN216718069U (en) | 2021-12-24 | 2021-12-24 | Four-point bending fatigue strength detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123278722.8U CN216718069U (en) | 2021-12-24 | 2021-12-24 | Four-point bending fatigue strength detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216718069U true CN216718069U (en) | 2022-06-10 |
Family
ID=81886549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123278722.8U Active CN216718069U (en) | 2021-12-24 | 2021-12-24 | Four-point bending fatigue strength detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216718069U (en) |
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2021
- 2021-12-24 CN CN202123278722.8U patent/CN216718069U/en active Active
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