CN113203620A - Tensile bending test equipment - Google Patents
Tensile bending test equipment Download PDFInfo
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- CN113203620A CN113203620A CN202110669919.XA CN202110669919A CN113203620A CN 113203620 A CN113203620 A CN 113203620A CN 202110669919 A CN202110669919 A CN 202110669919A CN 113203620 A CN113203620 A CN 113203620A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0023—Bending
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0026—Combination of several types of applied forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0033—Weight
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Abstract
The invention provides a tensile bending test device, which relates to the technical field of test devices and comprises a bracket assembly, a clamping and stretching assembly, a guide rail sliding block assembly and a roller assembly; the roller assembly comprises a plurality of rollers, and the rollers are all arranged on a sliding block of the lead screw sliding block mechanism; the rollers are sequentially arranged along the direction from the first chuck mechanism to the second chuck mechanism; and each roller can rotate around the axis of the roller. The plurality of rollers apply acting force different from the stretching direction to the test piece, and simultaneously apply stretching force on the test piece, so that the test piece is subjected to stretching bending deformation, the elongation of the test piece is far higher than that of a unidirectional stretching test in the prior art, and the forming potential of the plate under the stretch bending condition is reflected more truly.
Description
Technical Field
The invention relates to the technical field of test equipment, in particular to tensile bending test equipment.
Background
The tensile tester is a main tool used for testing the mechanical property of the material. The tensile testing machine can perform unidirectional tensile test on the material, the test operation is simple, and the information of the plastic flow of the material can be fully provided.
However, the uniaxial tensile test is limited by necking, i.e., non-uniform deformation in the gauge length region, resulting in failure of the material in localized areas. Through investigation of material tension tests, we can appreciate that a material near the full gauge length can actually develop a greater strain. However, due to the localized deformation, the remaining material of the test section is still in an "under-stretched" state, i.e. the part is not fully stretched out.
Therefore, the test data obtained by the tensile testing machine cannot truly reflect the characteristic that the formability of the plate is enhanced under the stretch bending condition, and the forming potential of the plate under the stretch bending condition is underestimated.
Disclosure of Invention
The invention aims to provide tensile bending test equipment to solve the technical problem that a tensile testing machine in the prior art underestimates the forming potential of a plate under a stretch bending condition.
The invention provides tensile bending test equipment which comprises a bracket assembly, a clamping and stretching assembly, a guide rail sliding block assembly and a roller assembly, wherein the clamping and stretching assembly is arranged on the bracket assembly;
the bracket assembly comprises a first support and a second support which are oppositely arranged at intervals, and the first support is positioned above the second support;
the clamping and stretching assembly comprises a first chuck mechanism and a second chuck mechanism which are oppositely arranged; the first chuck mechanism comprises a first telescopic piece and a first chuck which are connected with each other, and the first telescopic piece is fixed on the first support piece; the second chuck mechanism comprises a second telescopic piece and a second chuck which are connected with each other, and the second telescopic piece is fixed on the second support piece;
the guide rail sliding block assembly comprises a screw rod sliding block mechanism and a base, the screw rod sliding block mechanism is arranged on the base, the base is respectively connected with the first supporting piece and the second supporting piece in a sliding mode, and the base can move towards or away from the first chuck mechanism and the second chuck mechanism along a first direction;
the first chuck is provided with a first clamping surface, the second chuck is provided with a second clamping surface, the first clamping surface and the second clamping surface are arranged in parallel, and the first clamping surface and the second clamping surface are respectively arranged in a way of being vertical to the first direction;
the roller assembly comprises a supporting plate and a plurality of rollers, the rollers are all arranged on the supporting plate, and the supporting plate is arranged on a sliding block of the lead screw sliding block mechanism; the rollers are sequentially arranged along the direction from the first chuck mechanism to the second chuck mechanism; and each roller can rotate around the axis of the roller.
Further, the bracket assembly further comprises a support shaft and a guide shaft;
the number of the support shafts is four, the four support shafts are respectively arranged at the corner positions of the first support piece, and each support shaft is connected between the first support piece and the second support piece;
the two guide shafts are respectively arranged on two sides of the first chuck mechanism, and each guide shaft is connected between the first supporting piece and the second supporting piece.
Further, a pressure sensor is arranged between the second telescopic piece and the second chuck.
Further, the first chuck mechanism further comprises a guide plate;
two ends of the guide plate are respectively provided with a guide sleeve, and the two guide sleeves are respectively in one-to-one corresponding sleeve joint with the two guide shafts; the first telescopic piece is connected with the first chuck through the guide plate.
Furthermore, a first fixing support is arranged at the top end of any one of the guide shafts, a limit switch is arranged on the first fixing support, and the guide plate can be abutted against the limit switch;
two the bottom of guiding axle is equipped with second fixed bolster and third fixed bolster respectively, set up metal sensor on the second fixed bolster, set up linear displacement sensor on the third fixed bolster.
Furthermore, a first connecting piece is arranged at the top of the base, and a second connecting piece is arranged at the bottom of the base;
the first supporting piece is provided with a first sliding groove, and the second supporting piece is provided with a second sliding groove;
the first connecting piece is connected with the first sliding groove in a sliding mode, and the second connecting piece is connected with the second sliding groove in a sliding mode.
Further, the guide rail sliding block assembly also comprises a pushing block;
the pushing block is fixed on the second supporting piece and connected with the base through a bolt.
Furthermore, the roller assembly also comprises a supporting plate, a bearing top seat, a bearing seat and a sliding block bottom plate; the supporting plate is fixed on the sliding block bottom plate, and the sliding block bottom plate is connected with a sliding block of the screw rod sliding block mechanism;
the supporting plate is provided with two grooves, the two bearing seats are arranged in the grooves and can slide along the extending direction of the grooves, and the bearing seats can be fixed with the supporting plate;
the roller is arranged on the bearing seat and the bearing top seat through a bearing; the roller on the bearing top seat is positioned between the rollers on the two bearing seats;
the bearing top seat is fixedly connected with the supporting plate.
Furthermore, a gasket is arranged between the supporting plate and the bearing top seat.
The invention provides tensile bending test equipment which comprises a bracket assembly, a clamping and stretching assembly, a guide rail sliding block assembly and a roller assembly, wherein the clamping and stretching assembly is arranged on the bracket assembly; the bracket assembly comprises a first support and a second support which are oppositely arranged at intervals, and the first support is positioned above the second support; the clamping and stretching assembly comprises a first chuck mechanism and a second chuck mechanism which are oppositely arranged; the first chuck mechanism comprises a first telescopic piece and a first chuck which are connected with each other, and the first telescopic piece is fixed on the first support piece; the second chuck mechanism comprises a second telescopic piece and a second chuck which are connected with each other, and the second telescopic piece is fixed on the second support piece; the guide rail sliding block assembly comprises a screw rod sliding block mechanism and a base, the screw rod sliding block mechanism is arranged on the base, the base is respectively connected with the first supporting piece and the second supporting piece in a sliding mode, and the base can move towards or away from the first chuck mechanism and the second chuck mechanism along a first direction; the first chuck is provided with a first clamping surface, the second chuck is provided with a second clamping surface, the first clamping surface and the second clamping surface are arranged in parallel, and the first clamping surface and the second clamping surface are respectively arranged in a way of being vertical to the first direction; the roller assembly comprises a plurality of rollers, and the rollers are all arranged on a sliding block of the lead screw sliding block mechanism; the rollers are sequentially arranged along the direction from the first chuck mechanism to the second chuck mechanism; and each roller can rotate around the axis of the roller. The plurality of rollers apply acting force different from the stretching direction to the test piece, and simultaneously apply stretching force on the test piece, so that the test piece is subjected to stretching bending deformation, the elongation of the test piece is far higher than that of a unidirectional stretching test in the prior art, and the forming potential of the plate under the stretch bending condition is reflected more truly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a tensile bending test apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a clamping and stretching assembly in the tensile bending test apparatus provided by the embodiment of the invention;
FIG. 3 is a schematic structural diagram of a roller assembly in a tensile bending test apparatus provided by an embodiment of the present invention;
FIG. 4 is a side view of a tensile bend testing apparatus provided by an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4;
FIG. 6 is a cross-sectional view of a roller assembly in the tensile bending test apparatus provided in an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a guide rail slider assembly in the tensile bending test apparatus provided by the embodiment of the invention;
fig. 8 is a partially enlarged view of a guide rail slider assembly in the tensile bending test apparatus provided by the embodiment of the invention.
Icon: 1-a bracket assembly; 11-a first support; 12-a second support; 13-supporting the shaft; 14-a guide shaft; 2-clamping the stretching assembly; 21-a first chuck; 211-a first clamping surface; 22-a second collet; 23-a guide plate; 24-a first telescoping member; 25-a second telescoping member; 3-a guide rail slider assembly; 31-a screw slider mechanism; 311-a slider; 32-a base; 33-a carry block; 4-a roller assembly; 41-a support plate; 411-grooves; 42-a roller; 43-bearing top seat; 44-a bearing seat; 45-a gasket; 5-a protective cover; 6-limit switch; 7-a metal sensor; 8-linear displacement sensor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The present embodiment provides a tensile bending test apparatus, and a plurality of embodiments are provided below to describe the tensile bending test apparatus provided by the present invention in detail.
The tensile bending test apparatus provided in this embodiment, as shown in fig. 1 to 8, includes a bracket assembly 1, a clamping and stretching assembly 2, a guide rail slider assembly 3, and a roller assembly 4; the rack assembly 1 comprises a first support 11 and a second support 12 which are oppositely arranged at intervals, wherein the first support 11 is positioned above the second support 12; the clamping and stretching assembly 2 comprises a first chuck mechanism and a second chuck mechanism which are oppositely arranged; the first chuck mechanism comprises a first telescopic piece 24 and a first chuck 21 which are connected with each other, and the first telescopic piece 24 is fixed on the first support piece 11; the second chuck mechanism comprises a second telescopic member 25 and a second chuck 22 which are connected with each other, wherein the second telescopic member 25 is fixed on the second support member 12;
the guide rail sliding block assembly 3 comprises a screw rod sliding block mechanism 31 and a base 32, the screw rod sliding block mechanism 31 is arranged on the base 32, the base 32 is respectively connected with the first supporting piece 11 and the second supporting piece 12 in a sliding mode, and the base 32 can move towards or away from the first chuck mechanism and the second chuck mechanism along a first direction;
the first chuck 21 is provided with a first clamping surface 211, the second chuck 22 is provided with a second clamping surface, the first clamping surface 211 and the second clamping surface are arranged in parallel, and the first clamping surface and the second clamping surface are respectively arranged in a way of being vertical to the first direction; wherein the term "first direction" refers to the direction indicated by the ab arrow in fig. 4.
The roller assembly 4 comprises a support plate 41 and a plurality of rollers 42, and the plurality of rollers 42 are all arranged on the support plate 41; the support plate 41 is arranged on the slider 311 of the screw slider mechanism 31, and a plurality of rollers 42 are arranged in sequence along the direction from the first chuck mechanism to the second chuck mechanism; and each roller 42 is capable of rotating about the axis of the roller 42.
In this embodiment, the first support 11 and the second support 12 are disposed at an interval in a vertical direction, and the first support 11 and the second support 12 may be plate-shaped, and may also be in any suitable form such as a support stand.
First extensible member 24 and second extensible member 25 all can stretch out and draw back along vertical direction, and first extensible member 24 and second extensible member 25 can be the pneumatic cylinder, also can be arbitrary suitable form such as pneumatic cylinder or electric cylinder. By adjusting the expansion amount of the first expansion piece 24 and the second expansion piece 25, test pieces with different lengths can be adapted.
The slide block 311 of the screw-slide mechanism can be lifted in the vertical direction, so as to drive the roller assembly 4 to lift in the vertical direction. The base 32 can move horizontally toward or away from the first and second chuck mechanisms, thereby moving the roller assembly 4 horizontally toward or away from the first and second chuck mechanisms.
The axial direction of each roller 42 is arranged in the horizontal direction, and a plurality of rollers 42 are arranged in the vertical direction in sequence between the first chuck mechanism and the second chuck mechanism.
Acting force different from the stretching direction is applied to the test piece through the rollers 42, and meanwhile, stretching force is applied to the test piece by the first clamping head 21 and the second clamping head 22, so that the test piece is subjected to stretching bending deformation, the elongation of the test piece is far higher than that of a one-way stretching test in the prior art, and the forming potential of the plate under the stretch bending condition is reflected more truly.
Further, the bracket assembly 1 further comprises a support shaft 13 and a guide shaft 14; the number of the support shafts 13 is four, the four support shafts 13 are respectively arranged at the corner positions of the first support member 11, and each support shaft 13 is connected between the first support member 11 and the second support member 12; the number of the guide shafts 14 is two, the two guide shafts 14 are respectively arranged at two sides of the first chuck mechanism, and each guide shaft 14 is connected between the first support 11 and the second support 12.
Specifically, second support piece 12 is the welding rack, and the welding rack utilizes square steel pipe whole welding to form, stable in structure. The table-board of the welding bench is made by adopting a numerical control milling process, and the roughness of the surface is lower.
The bottom of second support piece 12 can set up the lower margin, and the lower margin is four, and four lower margins set up the bight position in the bottom of second support piece 12 respectively, and the height and the levelness of second support piece 12 can be adjusted to the lower margin.
The upper surface of the welding bench is provided with a center hole, the second telescopic piece 25 is a hydraulic cylinder, and the cylinder body of the hydraulic cylinder extends into the center hole.
Four corner positions of the upper surface of the welding bench are also provided with first positioning holes which are blind holes. A first positioning sleeve is arranged in the first positioning hole, and the supporting shaft 13 is inserted into the first positioning sleeve. The bottom of first position sleeve sets up a plurality of bolts, and a plurality of bolts set up along the circumference interval of first position sleeve, set up a plurality of nuts on the bottom surface of first locating hole, and a plurality of nuts set up along the circumference interval of first locating hole, and the bolt and nut cooperation are connected, can adjust the height and the axiality of first position sleeve. The supporting shaft 13 is in clearance fit with the first positioning sleeve, and the perpendicularity of the supporting shaft 13 can be adjusted by utilizing the extending amount of the bolt on the side wall of the first positioning sleeve. The top end of the support shaft 13 is locked with the first support 11 by a nut.
The area of the upper surface of the welding bench, which is located at the two sides of the central hole, is also provided with a second positioning hole, and the second positioning hole is used for installing the guide shaft 14. The guide shaft 14 is mounted in a similar manner to the support shaft 13 and will not be described in detail here.
A plurality of T-shaped nut grooves are also formed in the upper surface of the welding bench and are used for being in sliding connection with the base 32.
The support shaft 13 is made of chrome-plated steel, and has the characteristics of rust resistance, high precision and high strength.
The first supporting part 11 is a welding cross beam, a central hole is formed in the upper surface of the welding cross beam, the first telescopic part 24 is a hydraulic cylinder, and the cylinder body of the hydraulic cylinder extends out of the upper surface of the welding cross beam through the central hole. And the side wall of the welding beam is provided with a threaded hole for installing the protective cover 5. The shield 5 is placed over the welding beam and the first telescopic element 24 is located inside the shield 5. The lower surface of the welding beam is provided with a plurality of sliding grooves which are used for being in sliding connection with the base 32.
Further, a pressure sensor is arranged between the second telescopic member 25 and the second chuck 22. By means of the pressure sensor, the tensile force exerted by the second clamping head 22 on the test piece can be determined. The pressure sensor transmits the acquired pressure signal to a control system of the tensile bending test equipment.
Specifically, the second extensible member 25 and the pressure sensor are connected through flanges, so that the dismounting is simple, and the replacement, the maintenance and the repair can be convenient.
Further, the first chuck mechanism further includes a guide plate 23; two ends of the guide plate 23 are respectively provided with a guide sleeve, and the two guide sleeves are respectively sleeved with the two guide shafts 14 in a one-to-one correspondence manner; the first telescopic member 24 is connected to the first cartridge 21 via a guide plate 23.
The guide plate 23 is welded and precisely machined, and the connection and assembly mode improves the stretching precision and the guiding precision, reduces the sliding friction force and improves the accuracy of data.
Furthermore, a first fixing bracket is arranged at the top end of any one guide shaft 14, a limit switch 6 is arranged on the first fixing bracket, and the guide plate 23 can be abutted against the limit switch 6; the bottom ends of the two guide shafts 14 are respectively provided with a second fixed support and a third fixed support, the second fixed support is provided with a metal sensor 7, and the third fixed support is provided with a linear displacement sensor 8.
When first extensible member 24 surpasses limit position, deflector 23 can contact with limit switch 6, makes first extensible member 24 no longer than limit position, guarantees experimental safety.
When the roller assembly 4 moves upwards until the metal test piece in the roller assembly 4 approaches the metal sensor 7, the metal sensor 7 feeds back a signal to enable the servo motor of the lead screw slider mechanism 31 to rotate in the reverse direction, and the roller assembly 4 moves downwards, or vice versa, so that the roller assembly 4 reciprocates in the vertical direction.
Further, a first connecting piece is arranged at the top of the base 32, and a second connecting piece is arranged at the bottom of the base 32; a first sliding groove is formed on the first supporting piece 11, and a second sliding groove is formed on the second supporting piece 12; the first connecting piece is connected with the first sliding groove in a sliding mode, and the second connecting piece is connected with the second sliding groove in a sliding mode.
The base 32 uses square steel pipes as welding bases, and connecting plates and reinforcing ribs are welded on the base 32, so that the strength and the structural stress of the base 32 can meet the requirements of lateral thrust.
The first connecting piece can be a bolt, and the second connecting piece can be a T-shaped nut.
After the base 32 is moved to a proper position with respect to the first support 11 and the second support 12, the base 32 is connected to the first support 11 and the second support 12 by bolts, respectively. After the bolts are loosened, the base 32 may slide relative to the first and second supports 11 and 12 to adjust the position of the base 32 in the horizontal direction relative to the first and second supports 11 and 12, so as to adjust the distance between the roller 42 and the test piece.
Further, the guide rail slider assembly 3 further includes a positioning block 33; the pushing block 33 is fixed on the second supporting member 12, and the pushing block 33 is connected with the base 32 through a bolt.
After the base 32 is released from the first support 11 and the second support 12, the position of the base 32 in the horizontal direction with respect to the first support 11 and the second support 12 can be adjusted by the positioning block 33.
Further, the roller assembly 4 further includes a support plate 41, a bearing top seat 43, a bearing seat 44 and a slider bottom plate; the supporting plate 41 is fixed on a slider bottom plate, and the slider bottom plate is connected with a slider 311 of the screw slider mechanism 31; the supporting plate 41 is provided with two grooves 411, the two bearing seats 44 are arranged in the grooves 411, the bearing seats 44 can slide along the extending direction of the grooves 411, and the bearing seats 44 can be fixed with the supporting plate 41; the roller 42 is arranged on the bearing seat 44 and the bearing top seat 43 through bearings; the rollers 42 on the bearing top seat 43 are positioned between the rollers 42 on the two bearing seats 44; the bearing top seat 43 is fixedly connected with the support plate 41.
Wherein the extending direction of the recess 411 is arranged in a vertical direction. Bearing seat 44 sets up in recess 411, can guarantee the precision of bearing seat 44 vertical adjustment, can also guarantee the lateral thrust intensity of bearing seat 44. After the bearing housing 44 is moved to a proper position, the bearing housing 44 is fixed with the support plate 41 by bolts.
Further, a spacer 45 is provided between the support plate 41 and the bearing top mount 43. The amount of press-fitting of the roller 42 into the bearing top holder 43 can be adjusted by adding or subtracting the spacer 45.
The tensile bending test equipment that this embodiment provided applys the effort that is different from tensile direction to the test piece through a plurality of gyro wheels 42, applys the tensile force on the test piece simultaneously, makes the test piece take place tensile bending deformation for the test piece produces the elongation that is higher than traditional standard one-way tensile test far away, with the shaping potentiality of feedback panel under the stretch bending condition more truthfully.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A tensile bending test device is characterized by comprising a bracket assembly, a clamping and stretching assembly, a guide rail sliding block assembly and a roller assembly;
the bracket assembly comprises a first support and a second support which are oppositely arranged at intervals, and the first support is positioned above the second support;
the clamping and stretching assembly comprises a first chuck mechanism and a second chuck mechanism which are oppositely arranged; the first chuck mechanism comprises a first telescopic piece and a first chuck which are connected with each other, and the first telescopic piece is fixed on the first support piece; the second chuck mechanism comprises a second telescopic piece and a second chuck which are connected with each other, and the second telescopic piece is fixed on the second support piece;
the guide rail sliding block assembly comprises a screw rod sliding block mechanism and a base, the screw rod sliding block mechanism is arranged on the base, the base is respectively connected with the first supporting piece and the second supporting piece in a sliding mode, and the base can move towards or away from the first chuck mechanism and the second chuck mechanism along a first direction;
the first chuck is provided with a first clamping surface, the second chuck is provided with a second clamping surface, the first clamping surface and the second clamping surface are arranged in parallel, and the first clamping surface and the second clamping surface are respectively arranged in a way of being vertical to the first direction;
the roller assembly comprises a supporting plate and a plurality of rollers, the rollers are all arranged on the supporting plate, and the supporting plate is arranged on a sliding block of the lead screw sliding block mechanism; the rollers are sequentially arranged along the direction from the first chuck mechanism to the second chuck mechanism; and each roller can rotate around the axis of the roller.
2. The tensile bend testing apparatus of claim 1, wherein the carriage assembly further comprises a support shaft and a guide shaft;
the number of the support shafts is four, the four support shafts are respectively arranged at the corner positions of the first support piece, and each support shaft is connected between the first support piece and the second support piece;
the two guide shafts are respectively arranged on two sides of the first chuck mechanism, and each guide shaft is connected between the first supporting piece and the second supporting piece.
3. The tensile bend test apparatus of claim 2, wherein a pressure sensor is disposed between the second telescoping member and the second collet.
4. The tensile bend test apparatus of claim 2, wherein the first collet mechanism further comprises a guide plate;
two ends of the guide plate are respectively provided with a guide sleeve, and the two guide sleeves are respectively in one-to-one corresponding sleeve joint with the two guide shafts; the first telescopic piece is connected with the first chuck through the guide plate.
5. The tensile bending test apparatus according to claim 4, wherein a first fixing bracket is arranged at the top end of any one of the guide shafts, a limit switch is arranged on the first fixing bracket, and the guide plate can be abutted against the limit switch;
two the bottom of guiding axle is equipped with second fixed bolster and third fixed bolster respectively, set up metal sensor on the second fixed bolster, set up linear displacement sensor on the third fixed bolster.
6. The tensile bending test apparatus of claim 1, wherein a first connector is provided at a top of the base, and a second connector is provided at a bottom of the base;
the first supporting piece is provided with a first sliding groove, and the second supporting piece is provided with a second sliding groove;
the first connecting piece is connected with the first sliding groove in a sliding mode, and the second connecting piece is connected with the second sliding groove in a sliding mode.
7. The tensile bend test apparatus of claim 6, wherein the guide rail slider assembly further comprises a thrust block;
the pushing block is fixed on the second supporting piece and connected with the base through a bolt.
8. The tensile bend test apparatus of claim 1, wherein the roller assembly further comprises a bearing top mount, a bearing mount, and a slider bottom plate; the supporting plate is fixed on the sliding block bottom plate, and the sliding block bottom plate is connected with a sliding block of the screw rod sliding block mechanism;
the supporting plate is provided with two grooves, the two bearing seats are arranged in the grooves and can slide along the extending direction of the grooves, and the bearing seats can be fixed with the supporting plate;
the roller is arranged on the bearing seat and the bearing top seat through a bearing; the roller on the bearing top seat is positioned between the rollers on the two bearing seats;
the bearing top seat is fixedly connected with the supporting plate.
9. The tensile bend test apparatus of claim 8, wherein a spacer is disposed between the support plate and the bearing top mount.
10. The tensile bend test apparatus of claim 1, wherein the first and second telescoping members are each hydraulic cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110669919.XA CN113203620B (en) | 2021-06-17 | 2021-06-17 | Tensile bending test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110669919.XA CN113203620B (en) | 2021-06-17 | 2021-06-17 | Tensile bending test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN113203620A true CN113203620A (en) | 2021-08-03 |
| CN113203620B CN113203620B (en) | 2022-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110669919.XA Active CN113203620B (en) | 2021-06-17 | 2021-06-17 | Tensile bending test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220341828A1 (en) * | 2019-09-04 | 2022-10-27 | Danfoss Power Solutions Ii Technology A/S | Bend test apparatus for a hydraulic hose |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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