CN209784059U - Tensile fatigue test device - Google Patents
Tensile fatigue test device Download PDFInfo
- Publication number
- CN209784059U CN209784059U CN201920148975.7U CN201920148975U CN209784059U CN 209784059 U CN209784059 U CN 209784059U CN 201920148975 U CN201920148975 U CN 201920148975U CN 209784059 U CN209784059 U CN 209784059U
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- Prior art keywords
- supporting
- plate
- fixing
- welding steel
- bottom plate
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 50
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 43
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
the utility model provides a tensile fatigue test device. The tensile fatigue test device comprises a first supporting plate; a second support plate; the first fixing rod penetrates through the first supporting plate and the second supporting plate; the counter-force frame mechanism comprises a supporting upright post, a first supporting top plate, a first supporting bottom plate, a second fixing rod, a second nut, a gasket, a limiting clamp and a fixing plate; the first welding steel plate is sleeved at the outer center of the first fixing rod; the second welding steel plate is arranged at the top of the first supporting bottom plate; the test component to be tested is welded between the first welding steel plate and the second welding steel plate; and a safety mechanism. The utility model provides a tensile fatigue test device has convenient operation, uses in a flexible way, is convenient for carry out the fixed advantage of centre gripping to the major component.
Description
Technical Field
The utility model relates to a fatigue test technical field especially relates to a tensile fatigue test device.
Background
In the field of fatigue testing, the fatigue test of a test component is usually completed on a fatigue testing machine, and a common fatigue machine can only perform a compression fatigue test but cannot perform a tensile fatigue test, so that the application range of the fatigue machine is greatly limited.
Especially for some large components, the large components have certain thickness and are not easy to clamp; therefore, in the tensile fatigue test, the truss member is easily broken from the clamping position, so that the success rate of the test is low.
Therefore, it is necessary to provide a new tensile fatigue testing apparatus to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a convenient operation, use nimble, be convenient for carry out the tensile fatigue test device that the centre gripping is fixed to the major component.
in order to solve the technical problem, the tensile fatigue test device provided by the utility model comprises a first support plate, wherein the bottom of the first support plate is vertically provided with a support leg, the support leg is anchored on the ground, and the top of the first support plate is provided with a through hole; the second support plate and the first support plate are arranged in parallel, and the second support plate and the first support plate have the same structure; the first fixing rod penetrates through the first supporting plate and the second supporting plate through the through hole, and first screw caps are arranged at two ends of the first fixing rod for fixing; the counter-force frame mechanism comprises four supporting stand columns, a first supporting top plate, a first supporting bottom plate, a second fixing rod, a second nut, a gasket, a limiting clamp and fixing plates, wherein the four supporting stand columns are arranged on two sides of the first fixing rod in a pairwise parallel mode, the first supporting bottom plate is fixed at the bottom end of each supporting stand column, the first supporting top plate is fixed at the top end of each supporting stand column, the fixing plates are arranged on two sides of the bottom of each supporting stand column, the second fixing rods penetrate through the two fixing plates and are fixed through the second nuts, and the gasket is arranged between the second nut and the fixing plates; the first welding steel plates are provided with two pieces, reserved hole positions are symmetrically formed in the tops of the two pieces of first welding steel plates, and the two pieces of first welding steel plates are sleeved at the outer center of the first fixing rod through the reserved hole positions; the two second welding steel plates are vertically fixed at the top of the first supporting bottom plate through the limiting clamp, the second welding steel plates are identical to the first welding steel plates in structure, the two second welding steel plates are sleeved at the outer center of the second fixing rod, and the second welding steel plates and the first welding steel plates are located on the same vertical line; the test component to be tested is welded between the first welding steel plate and the second welding steel plate; and the safety mechanism is arranged right below the counter force frame mechanism.
by adopting the technical scheme, the lower end of the test member to be tested is connected with the counter-force frame mechanism, so that the test member to be tested and the counter-force frame mechanism are integrated and move together, the upper end of the test member to be tested is fixed on the first fixing rod through the first welding steel plate, and the counter-force frame mechanism is provided with pressure through the fatigue testing machine to move downwards, so that the test member to be tested is under the action of tension, the tensile fatigue test of the test member to be tested is realized, and the defect that a common fatigue machine can only be used for the compression fatigue test of a large test piece and cannot be used for the tensile fatigue test of the large test piece is overcome; the mode that passes the welding steel sheet through setting up the fixed rod is right the test component that awaits measuring carries out the centre gripping fixed for the structure is more firm.
the utility model discloses further set up to: purlins are uniformly arranged between the four supporting stand columns and are located at the tops of the supporting stand columns.
By adopting the technical scheme, the purlins are arranged between the supporting stand columns so as to increase the stability of the reaction frame mechanism, and the purlins are arranged above the supporting stand columns to avoid blocking when the reaction frame mechanism moves downwards.
The utility model discloses further set up to: the diameter of the reserved hole is larger than that of the first fixing rod, and the diameter of the first fixing rod is the same as that of the second fixing rod.
By adopting the technical scheme, the first fixing rod and the second fixing rod can smoothly pass through the reserved hole positions.
the utility model discloses further set up to: the safety mechanism comprises fixing columns, a second supporting bottom plate, a second supporting top plate, a spring set and a knob, the second supporting bottom plate is arranged under the first supporting bottom plate, the fixing columns are distributed around the second supporting bottom plate in a rectangular array mode, the second supporting top plate and the second supporting bottom plate are parallel to each other, the periphery of the second supporting top plate penetrates through the fixing columns and is in sliding connection with the fixing columns, and the area of the second supporting top plate is larger than that of the first supporting bottom plate; the spring group is fixed between the second supporting bottom plate and the second supporting top plate, the knob is arranged at the joint of the periphery of the second supporting top plate and the fixing column, and the knob and the fixing column are in threaded connection with each other.
By adopting the technical scheme, the safety mechanism is arranged, the reaction frame mechanism is statically arranged on the second bearing top plate during the shutdown time, and the safety mechanism can be used for buffering when the test piece is in fatigue fracture so as to prevent the reaction frame mechanism from impacting the ground and being damaged.
the utility model discloses further set up to: the length of the supporting upright post is greater than that of the test component to be tested, and the sum of the lengths of the supporting upright post and the fixing column is greater than the height of the first supporting plate.
Through adopting above-mentioned technical scheme, make counter-force frame mechanism can the downstream to with safety mechanism contacts, improves mechanism's rationality.
Compared with the prior art, the utility model provides a tensile fatigue test device has following beneficial effect:
The utility model provides a tensile fatigue test device, through with the lower extreme of the test component that awaits measuring with counter-force frame mechanism is connected, make both become whole, the common motion, will the upper end of the test component that awaits measuring is fixed on the first fixed rod through first welded steel sheet, provide pressure through fatigue testing machine to counter-force frame mechanism, make counter-force frame mechanism move down, thereby make the test component that awaits measuring tensile force acts on, realize the tensile fatigue test of the component that awaits measuring, solved general fatigue machine can only be used for the compression fatigue test of large-scale test piece and can't carry out the defect that large-scale test piece tensile fatigue test; the mode that passes the welding steel sheet through setting up the fixed rod is right the test component that awaits measuring carries out the centre gripping fixed for the structure is more firm.
Drawings
Fig. 1 is a schematic structural diagram of a tensile fatigue testing apparatus according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the reaction frame mechanism shown in FIG. 1;
FIG. 3 is a schematic view of the connection of the first supporting base plate and the fixing plate shown in FIG. 2;
FIG. 4 is a schematic structural diagram of the first welded steel plate, the second welded steel plate and the test member to be tested shown in FIG. 1;
Fig. 5 is a schematic structural view of the safety mechanism shown in fig. 1.
Reference numbers in the figures: 1. the test device comprises a first supporting plate, 11, supporting legs, 12, through holes, 2, a second supporting plate, 3, a first fixing rod, 31, a first nut, 4, a counter-force frame mechanism, 41, a supporting upright post, 42, a first supporting top plate, 43, a first supporting bottom plate, 44, purlins, 45, a second fixing rod, 46, a second nut, 47, a gasket, 48, a limiting clamp, 49, a fixing plate, 5, a first welding steel plate, 61, a reserved hole site, 6, a second welding steel plate, 7, a test component to be tested, 8, a safety mechanism, 81, a fixing column, 82, a second supporting bottom plate, 83, a second supporting top plate, 84, a spring group, 85 and a knob.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, wherein fig. 1 is a schematic structural diagram of a tensile fatigue testing apparatus according to a preferred embodiment of the present invention; FIG. 2 is a schematic view of the reaction frame mechanism shown in FIG. 1; FIG. 3 is a schematic view of the connection of the first supporting base plate and the fixing plate shown in FIG. 2; FIG. 4 is a schematic structural diagram of the first welded steel plate, the second welded steel plate and the test member to be tested shown in FIG. 1; fig. 5 is a schematic structural view of the safety mechanism shown in fig. 1. The tensile fatigue test device comprises a first supporting plate 1, wherein supporting legs 11 are vertically arranged at the bottom of the first supporting plate 1, the supporting legs 11 are anchored on the ground, and through holes 12 are formed in the top of the first supporting plate 1; the second support plate 2 and the first support plate 1 are arranged in parallel, and the second support plate 2 and the first support plate 1 have the same structure; the first fixing rod 3 penetrates through the first support plate 1 and the second support plate 2 through the through hole 12, and first nuts 31 are arranged at two ends of the first fixing rod 3 for fixing; the reaction frame mechanism 4 comprises a support upright 41, a first support top plate 42, a first support bottom plate 43, a second fixing rod 45, a second nut 46, a gasket 47, a limiting clamp 48 and a fixing plate 49, wherein four support upright 41 are provided, every two of the four support upright 41 are arranged on two sides of the first fixing rod 3 in parallel, the first support bottom plate 43 is fixed at the bottom end of the support upright 41, the first support top plate 42 is fixed at the top end of the support upright 41, the fixing plate 49 is arranged on two sides of the bottom of the support upright 41, the second fixing rod 45 penetrates through the two fixing plates 49 and is fixed through the second nut 46, and the gasket 47 is arranged between the second nut 46 and the fixing plate 49; the first welding steel plates 5 are provided with two pieces, reserved hole sites 61 are symmetrically formed in the tops of the two pieces of first welding steel plates 5, and the two pieces of first welding steel plates 5 are sleeved at the outer center of the first fixing rod 3 through the reserved hole sites 61; the two second welding steel plates 6 are vertically fixed on the top of the first supporting bottom plate 43 through the limiting clamp 48, the structures of the second welding steel plates 6 and the first welding steel plates 5 are the same, the two second welding steel plates 6 are sleeved at the outer center of the second fixing rod 45, and the second welding steel plates 6 and the first welding steel plates 5 are located on the same vertical line; the test component 7 to be tested is welded between the first welded steel plate 5 and the second welded steel plate 6; a safety mechanism 8, wherein the safety mechanism 8 is arranged right below the counter frame mechanism 4; the lower end of the test member 7 to be tested is connected with the counterforce frame mechanism 4, so that the test member 7 to be tested and the counterforce frame mechanism are integrated and move together, the upper end of the test member 7 to be tested is fixed on the first fixing rod 3 through the first welding steel plate 5, and the counterforce frame mechanism 4 is provided with pressure through a fatigue testing machine, so that the counterforce frame mechanism 4 moves downwards, the test member 7 to be tested is under the action of tension, the tensile fatigue test of the test member to be tested is realized, and the defect that a common fatigue machine can only be used for the compression fatigue test of a large test piece and cannot be used for the tensile fatigue test of the large test piece is overcome; the test component 7 to be tested is clamped and fixed by a mode that a fixing rod penetrates through a welded steel plate, so that the structure is more stable.
Purlins 44 are uniformly arranged among the four supporting columns 41, and the purlins 44 are positioned at the tops of the supporting columns 41; the purlins 44 are arranged between the support columns 41 to increase the stability of the reaction frame mechanism 4, and the purlins 44 are arranged above the support columns 41 to prevent the reaction frame mechanism 4 from blocking when moving downwards.
The diameter of the reserved hole site 61 is larger than that of the first fixing rod 3, and the diameter of the first fixing rod 3 is the same as that of the second fixing rod 45; in order to make the first fixing rod 3 and the second fixing rod 45 smoothly pass through the reserved hole 61.
The safety mechanism 8 comprises fixing columns 81, a second supporting bottom plate 82, a second supporting top plate 83, a spring set 84 and a knob 85, the second supporting bottom plate 82 is arranged right below the first supporting bottom plate 43, the fixing columns 81 are distributed around the second supporting bottom plate 82 in a rectangular array, the second supporting top plate 83 is parallel to the second supporting bottom plate 82, the periphery of the second supporting top plate 83 penetrates through the fixing columns 81 to be in sliding connection with the fixing columns 81, and the area of the second supporting top plate 83 is larger than that of the first supporting bottom plate 43; the spring group 84 is fixed between the second supporting bottom plate 82 and the second supporting top plate 83, the knob 85 is arranged at the joint of the periphery of the second supporting top plate 83 and the fixing column 81, and the knob 85 and the fixing column 81 are in threaded connection with each other; by providing the safety mechanism 8, the reaction frame mechanism 4 is set on the second support top plate 83 at rest time, and the safety mechanism 8 can serve as a buffer when the test piece is broken due to fatigue, so that the reaction frame mechanism 4 is prevented from being damaged by the impact on the ground.
The length of the supporting upright column 41 is greater than that of the test component 7 to be tested, and the sum of the lengths of the supporting upright column 41 and the fixing column 81 is greater than the height of the first supporting plate 1; in order to enable the counterforce frame mechanism 4 to move down into contact with the safety mechanism 8, the rationality of the mechanism is improved.
The utility model provides a tensile fatigue test device's theory of operation as follows:
Firstly, adjusting the counterforce frame mechanism 4 to be horizontal, installing the test component 7 to be tested after welding a steel plate right below the position corresponding to the center of the fatigue testing machine probe, and fixing the position by using the limiting clamp 48; the second fixing rod 45 penetrates through the reserved hole position 61 at the bottom of the second welding steel plate 6 and is fixed by the second nut 46, so that the component to be tested 7 and the counter-force frame mechanism 4 are integrated; then, adjusting the knob 85 to enable the reaction frame mechanism 4 to slowly and stably rise under the action of the spring group 84 until the first welded steel plate 5 at the upper end of the component to be tested 7 is aligned with the through hole 12 at the top of the supporting plate, adjusting the knob 85 to enable the reaction frame system to be kept horizontal, enabling the first fixing rod 3 to penetrate through the through hole 12, fixing the fixing through the first nut 31, and enabling the component to be tested 7 to be connected with the first fixing rod 3; adjusting the knob 85 to separate the counter-force frame mechanism 4 and the safety mechanism 8 from each other and keep a certain distance, so as to ensure that the vibration of the counter-force frame mechanism 4 does not contact the safety mechanism 8 in the fatigue test process; adjusting the height of the upper surface of the counterforce frame mechanism 4 downwards by a probe of a fatigue testing machine, providing pressure to the first supporting top plate 42 through the fatigue testing machine, and enabling the counterforce frame mechanism 4 to move downwards, so that the component 7 to be tested is under the action of tensile force, and the tensile fatigue test of the component to be tested is realized; when the test piece is in fatigue fracture, the safety mechanism 8 is used for buffering.
compared with the prior art, the utility model provides a tensile fatigue test device has following beneficial effect:
the utility model provides a tensile fatigue test device, through with the lower extreme of the test component 7 that awaits measuring with counter-force frame mechanism 4 is connected, make both become whole, the joint motion, will the upper end of the test component 7 that awaits measuring is fixed on first fixed rod 3 through first welded steel sheet 5, provide pressure through the fatigue testing machine to counter-force frame mechanism 4, make counter-force frame mechanism 4 move downwards, thereby make the test component 7 that awaits measuring tensile force acts on, realize the tensile fatigue test of the component that awaits measuring, solved general fatigue machine can only be used for the compression fatigue test of large-scale test piece and can't carry out the defect that large-scale test piece tensile fatigue test; the test component 7 to be tested is clamped and fixed by a mode that a fixing rod penetrates through a welded steel plate, so that the structure is more stable.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (5)
1. A tensile fatigue test device, characterized by comprising:
the supporting device comprises a first supporting plate (1), wherein supporting legs (11) are vertically arranged at the bottom of the first supporting plate (1), the supporting legs (11) are anchored on the ground, and through holes (12) are formed in the top of the first supporting plate (1);
The second supporting plate (2) and the first supporting plate (1) are arranged in parallel, and the second supporting plate (2) and the first supporting plate (1) are identical in structure;
The first fixing rod (3) penetrates through the first supporting plate (1) and the second supporting plate (2) through the through hole (12), and first screw caps (31) are arranged at two ends of the first fixing rod (3) for fixing;
A reaction frame mechanism (4), wherein the reaction frame mechanism (4) comprises a supporting upright post (41), a first supporting top plate (42), a first supporting bottom plate (43), a second fixing rod (45), a second screw cap (46), a gasket (47), a limiting clamp (48) and a fixing plate (49), four supporting upright columns (41) are arranged, every two of the four supporting upright columns (41) are arranged on two sides of the first fixing rod (3) in parallel, the bottom end of the supporting upright post (41) is fixed with the first supporting bottom plate (43), the top end of the supporting upright post (41) is fixed with the first supporting top plate (42), the fixing plates (49) are arranged at the two sides of the bottom of the supporting upright post (41), the second fixing rod (45) penetrates through the two fixing plates (49) and is fixed through the second screw cap (46), the gasket (47) is arranged between the second screw cap (46) and the fixing plate (49);
The first welding steel plates (5) are provided with two pieces, reserved hole sites (61) are symmetrically formed in the tops of the two pieces of first welding steel plates (5), and the two pieces of first welding steel plates (5) are sleeved at the outer centers of the first fixing rods (3) through the reserved hole sites (61);
The two second welding steel plates (6) are vertically fixed at the top of the first supporting bottom plate (43) through the limiting clamp (48), the second welding steel plates (6) are identical to the first welding steel plates (5) in structure, the two second welding steel plates (6) are sleeved at the outer center of the second fixing rod (45), and the second welding steel plates (6) and the first welding steel plates (5) are located on the same vertical line;
The test component (7) to be tested is welded between the first welding steel plate (5) and the second welding steel plate (6);
and the safety mechanism (8) is arranged right below the reaction frame mechanism (4).
2. the tensile fatigue test device of claim 1, wherein purlins (44) are uniformly arranged between the four supporting columns (41), and the purlins (44) are positioned at the tops of the supporting columns (41).
3. tensile fatigue test device according to claim 1, wherein the diameter of the reserved hole sites (61) is larger than the diameter of the first fixing bar (3), the diameter of the first fixing bar (3) being the same as the diameter of the second fixing bar (45).
4. the tensile fatigue test device according to claim 1, wherein the safety mechanism (8) comprises a fixing column (81), a second supporting bottom plate (82), a second supporting top plate (83), a spring set (84) and a knob (85), the second supporting bottom plate (82) is arranged right below the first supporting bottom plate (43), the fixing columns (81) are distributed around the second supporting bottom plate (82) in a rectangular array, the second supporting top plate (83) and the second supporting bottom plate (82) are parallel to each other, the periphery of the second supporting top plate (83) penetrates through the fixing column (81) and is in sliding connection with the fixing column (81), and the area of the second supporting top plate (83) is larger than that of the first supporting bottom plate (43); the spring group (84) is fixed between the second supporting bottom plate (82) and the second supporting top plate (83), the rotary knob (85) is arranged at the joint of the periphery of the second supporting top plate (83) and the fixed column (81), and the rotary knob (85) and the fixed column (81) are in threaded connection with each other.
5. The tensile fatigue test device of claim 4, wherein the length of the supporting column (41) is greater than the length of the test member (7) to be tested, and the sum of the lengths of the supporting column (41) and the fixing column (81) is greater than the height of the first supporting plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920148975.7U CN209784059U (en) | 2019-01-28 | 2019-01-28 | Tensile fatigue test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920148975.7U CN209784059U (en) | 2019-01-28 | 2019-01-28 | Tensile fatigue test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784059U true CN209784059U (en) | 2019-12-13 |
Family
ID=68793975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920148975.7U Expired - Fee Related CN209784059U (en) | 2019-01-28 | 2019-01-28 | Tensile fatigue test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209784059U (en) |
-
2019
- 2019-01-28 CN CN201920148975.7U patent/CN209784059U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |