CN218330552U - Tension spring fatigue test device - Google Patents

Abstract

The utility model relates to an extension spring fatigue test device, which comprises an outer shell, be equipped with the mount in the shell, guide assembly, drive assembly and test assembly, be equipped with guide assembly on the mount, test assembly includes fixed part and tensile portion, the fixed part is fixed for guide assembly, tensile portion sets up on guide assembly, and its tensile portion back still is equipped with the drive structure, drive assembly accessible drive structure, it carries out the axial along guide assembly and keeps away from the fixed part motion to drive tensile portion, be equipped with tensile couple on fixed part and the tensile portion respectively relatively, tensile couple is used for hanging and establishes the extension spring, guide assembly through setting can guide tensile portion stretch, thereby try tensile to await measuring the extension spring, furthermore, the cooperation through drive assembly and guide assembly changes the distance between tensile portion and the fixed part, and fix tensile portion on a certain position of guide assembly, the real use scene of emulation, and accomplish the test of long stroke.

Description

Tension spring fatigue test device

Technical Field

The utility model relates to an extension spring test technical field, in particular to extension spring fatigue test device.

Background

The application scenes of the tension springs are very wide, and the tension springs are generally tested before leaving factories, wherein the tests comprise an elasticity test, a fatigue test, a strength test and the like, so that the overall mechanical property of the produced tension springs can be known.

During general fatigue test, establish between the relative tensile plate through hanging the both ends of extension spring, through one of them tensile plate of drive assembly pulling, receive and release fast, and then test the extension spring, but this kind of testing arrangement generally is short stroke, high frequency, and generally need keep longer length and certain elasticity for the extension spring when using, therefore short stroke, high frequency test have certain limitation, can't imitate real use scene.

SUMMERY OF THE UTILITY MODEL

In order to make up for above not enough, the utility model provides an extension spring fatigue test device to solve above-mentioned technical problem.

The technical scheme of the utility model is that: the utility model provides an extension spring fatigue test device, includes the shell, be equipped with mount, guide assembly, drive assembly and test assembly in the shell, be equipped with the guide assembly on the mount, the test assembly includes fixed part and tensile portion, the fixed part for the guide assembly is fixed, tensile portion set up in on the guide assembly, and its tensile portion back still is equipped with the drive structure, the drive assembly accessible drive the drive structure drives tensile portion is followed the guide assembly carries out the axial and keeps away from the fixed part motion, the fixed part with respectively relative being equipped with tensile couple in tensile portion, tensile couple is used for hanging and establishes the extension spring.

Compared with the prior art, the beneficial effect of this design does: the stretching part can be guided to stretch through the arranged guide assembly, so that the tension spring to be tested is stretched, in addition, the distance between the stretching part and the fixing part is changed through the matching of the driving assembly and the guide assembly, the stretching part is fixed on a certain position of the guide assembly, a real use scene is simulated, and the long-stroke test is completed.

Preferably, the guide assembly includes a guide rail and a slider, the slider is slidably connected to the guide rail, and the stretching portion is fixed to the slider by a bolt and can axially move along the guide rail along with the slider.

As a preferred technical scheme, the number of the guide rails is two, the two guide rails are arranged on the fixing frame in parallel, the sliding block is arranged on the guide rails and can move axially along the guide rails, sliding resistance can be reduced through the matching of the sliding block and the guide rails, and then interference of an external environment is reduced, so that real data close to the tension spring is obtained.

As a preferred technical solution, the driving assembly includes a driving shaft and a driving motor, the driving shaft is disposed in parallel between the guiding assemblies, an end of the driving shaft is connected to an output shaft of the driving motor, and the driving shaft can drive the driving structure to move axially along the guiding assemblies.

As a preferable technical solution, the driving shaft is a threaded shaft, the driving structure includes a driving hole, the stretching portion is in threaded connection with the driving shaft, the driving shaft is a threaded shaft through the driving shaft, and the stretching portion is in meshing transmission through the driving hole, so that the adjustment precision is higher, and the load application is smoother.

As a preferable technical scheme, the stretching portion includes a stretching seat, the stretching seat is integrally T-shaped, the bottom of the stretching seat is fixed to the guide assembly, and the stretching hook is disposed on the lower surface of the cantilever end of the stretching seat.

As preferred technical scheme, still include the fixed plate, the fixed plate is fixed in the well lower part of mount, the fixed plate surface is provided with the fixed part, and its fixed part includes the fixing base, the top of fixing base is provided with tensile couple.

It can be understood that a tension sensor is arranged between the fixed seat and the draw hook and used for recording the tension, when the tensile hook above the drive motor drives the draw hook to be pulled, the tension sensor does not have tension or the tension is smaller than a certain tension value of the tensile length of the spring, the tension spring is considered to reach the fatigue limit of the tension spring, the corresponding station stops working, and in addition, a display screen is further arranged on the fixed seat and used for recording the tensile times under the condition of the fatigue limit of the tension spring.

As an optimal technical scheme, a plurality of groups of guide assemblies, drive assemblies and test units formed by the test assemblies are fixed on the fixing frame, a plurality of groups of guide assemblies, drive assemblies and test assemblies are integrally arranged on the fixing frame at intervals, a plurality of tension springs can be tested simultaneously through the arranged groups of test units, so that the test efficiency is improved, and in addition, after a single group of test units are damaged, the group of test units can be detached for maintenance without integral shutdown maintenance.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1;

FIG. 3 is a schematic perspective view of FIG. 1;

fig. 4 is a schematic view of fig. 3 from another perspective.

In the figure, 10. A housing; 20. a fixed mount; 30. a guide assembly; 40. a drive assembly; 50. testing the component; 60. a test unit; 70. a fixing plate;

301. a guide rail; 302. a slider;

401. a drive shaft; 402. a drive motor;

501. a stretching seat; 502. stretching the hook; 503. a fixed seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Example 1: the utility model provides a technical scheme does:

a tension spring fatigue test device, a shell 10, a fixed mount 20 is arranged in the shell 10, a plurality of groups of test units 60 are arranged on the fixed mount 20, the test units 60 comprise a guide assembly 30, a driving assembly 40 and a test assembly 50, the upper part of the shell 10 in side view is in a square lower part and is in a trapezoid shape, a fixed plate 70 is arranged at the joint of the upper part and the lower part of the shell, the fixed plate 70 separates the area in the shell 10, a communication groove is arranged on the inner side of the fixed plate 70, the upper part and the lower part of the fixed plate are communicated through the communication groove, the driving assembly 40 is positioned in the lower part and extends into the upper part through the communication groove, a driving motor 402 is arranged on the lower part of the shell, the guide assembly 30 is arranged on two sides of the driving motor 402, the guide assembly 30 comprises guide rails 301, a driving shaft 401 is arranged between the guide rails 301, the driving shaft 401 is connected with an output shaft of the driving motor 402, the guide assembly 30 further comprises a sliding block 302, the sliding block 302 is arranged on the guide rails 301, the stretching part of the test assembly 50 stretches across the sliding rails and is fixed on the sliding rails, meanwhile, a driving hole is arranged on the back of the stretching part, the stretching part is connected to the stretching shaft on the stretching shaft 402 through the driving shaft, and can rotate along the driving shaft 401.

The testing component 50 further includes a fixing portion, the fixing portion is a fixing seat 503, one end of the fixing seat 503 is fixed on the fixing plate 70, the other end of the fixing seat 503 extends towards the stretching portion, the stretching portion includes a stretching seat 501, the stretching seat 501 is integrally "T" shaped, a stretching hook 502 is disposed at the bottom of the cantilever end of the stretching seat 501, and the stretching hook 502 at the bottom of the cantilever end is disposed opposite to the stretching hook 502 on the fixing seat 503.

It is understood that the lower surface is provided with a control button and a controller, and the controller controls the driving motor 402 to be activated to stretch the tension spring after the control button inputs the activation signal.

The working principle is as follows: the control button is pressed down, the controller controls the driving motor 402 to be started, the driving motor 402 rotates forward to drive the driving shaft 401 to rotate, along with the forward rotation of the driving motor 402, the driving structure on the stretching portion matched with the driving shaft 401 in a threaded mode moves upwards towards the axial direction of the driving shaft 401, meanwhile, the sliding block 302 moves towards the guiding direction of the guiding rail 301 under the driving of the driving structure, so that the stretching seat is driven to move towards the direction away from the fixing seat 503 integrally, stretching of the tension spring is completed, the driving motor 402 is stopped at the moment, and the tension spring between the stretching seat 501 and the fixing seat 503 is in a stretching state.

The control button is pressed again, the controller controls the driving motor 402 to rotate reversely, so that the tension spring returns to the original state, and the test is completed.

And secondly, an emergency stop button is arranged on the surface of the lower part of the emergency stop device, and the emergency stop button can control the overall regulation and stop, so that safety accidents are avoided.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a extension spring fatigue test device, includes the shell, be equipped with mount, guide assembly, drive assembly and test assembly in the shell, its characterized in that: be equipped with the guide subassembly on the mount, the test subassembly includes fixed part and tensile portion, the fixed part for the guide subassembly is fixed, tensile portion set up in on the guide subassembly, and its tensile portion back still is equipped with the drive structure, drive subassembly accessible drive the drive structure drives tensile portion follows the guide subassembly carries out the axial and keeps away from the fixed part motion, the fixed part with respectively relative being equipped with tensile couple in the tensile portion, tensile couple is used for hanging and establishes the extension spring.

2. The tension spring fatigue testing device of claim 1, characterized in that: the guide assembly comprises a guide rail and a sliding block, the sliding block is connected to the guide rail in a sliding mode, and the stretching portion is fixed to the sliding block through a bolt and can move axially along the guide rail along with the sliding block.

3. The tension spring fatigue testing device of claim 2, characterized in that: the guide rails are arranged on the fixed frame in parallel, and the sliding block is arranged on the guide rails and can axially move along the guide rails.

4. The tension spring fatigue test device of claim 1, wherein: the driving assembly comprises a driving shaft and a driving motor, the driving shaft is arranged between the guide assemblies in parallel, the end part of the driving shaft is connected with an output shaft of the driving motor, and the driving shaft can drive the driving structure to move axially along the guide assemblies.

5. The tension spring fatigue testing device of claim 4, wherein: the drive shaft is a threaded shaft, the drive structure includes a drive bore, and the extension is threaded onto the drive shaft.

6. The tension spring fatigue testing device of claim 1, characterized in that: the stretching part comprises a stretching seat, the stretching seat is integrally T-shaped, the bottom of the stretching seat is fixed on the guide assembly, and the stretching hook is arranged on the lower surface of the cantilever end of the stretching seat.

7. The tension spring fatigue testing device of claim 6, characterized in that: the fixing plate is fixed on the middle lower portion of the fixing frame, a fixing portion is arranged on the surface of the fixing plate and comprises a fixing seat, and a stretching hook is arranged at the top of the fixing seat.

8. The tension spring fatigue testing device of claim 1, characterized in that: the test device is characterized in that a plurality of groups of guide assemblies, drive assemblies and test units formed by test assemblies are fixed on the fixing frame, and the guide assemblies, the drive assemblies and the test assemblies are arranged on the fixing frame at intervals integrally.

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