CN220854508U

CN220854508U - Fatigue-resistant experimental device

Info

Publication number: CN220854508U
Application number: CN202322443105.1U
Authority: CN
Inventors: 杨润泽; 吴立峰
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-04-26
Anticipated expiration: 2033-09-08

Abstract

The utility model discloses a fatigue resistance experiment device, which relates to the field of spring fatigue resistance detection and comprises a workbench, a detection spring, a control cam, a sliding mounting table for mounting the detection spring, a fixed mounting table and an anti-deflection mechanism, wherein the control cam is rotatably mounted on the upper end surface of the workbench; through the cooperation of above-mentioned structure, can prevent to detect the radial transition bending deformation of spring to improve the accuracy of experiment.

Description

Fatigue-resistant experimental device

Technical Field

The utility model relates to the technical field of spring fatigue detection, in particular to a fatigue resistance experimental device.

Background

The spring has the important function in engineering mechanics, is a mechanical part which works by utilizing elasticity, and is deformed by external force, and the part made of elastic materials is restored to the original state after the external force is removed, so that the fatigue test of the springs in different batches is needed.

Such as Chinese patent: the utility model discloses a fatigue-resistant experimental apparatus of engineering mechanics, including supporting seat and servo motor, the top left side of supporting seat is fixed with servo motor, the right side of supporting seat is fixed with places the dish, the right side nestification of placing the dish has the protective cover, the output on servo motor right side is connected with the rolling disc through the transmission shaft rotation, the outer wall of rolling disc is fixed with the inner panel, the outside nestification of inner panel has the planking, the inner opening of placing the dish is provided with the extension groove, the right side trompil of placing the dish is provided with spacing hole, the inside embedding of extension groove has outer fixed block and internal fixation block, the outer wall of outer fixed block is inserted and is equipped with spacing bolt, the one end of outer fixed block and internal fixation block all is fixed with the fixed plate. According to the utility model, the fatigue test can be performed on a plurality of springs at the same time, the test efficiency of the spring fatigue test is greatly improved, the test result is more accurate by an average value taking method, and the springs with various specifications can be tested, so that the use is more convenient.

Although the test result is more accurate by the method of taking the average value, the springs with various specifications can be tested, and the use is more convenient, in the specific use process, workers find that the springs are easy to deform along the radial direction and are in a bending arch shape due to the fact that two fixing plates at the two ends of the springs are fixed when the springs are extruded, and the accuracy of the experimental result is affected.

For this purpose, we propose a fatigue resistance experimental device.

Disclosure of utility model

The utility model provides a fatigue resistance experiment device for preventing spring deflection.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fatigue resistance experimental apparatus, includes workstation, detection spring, control cam, is used for installing the slip mount table, fixed mounting platform and the deviation preventing mechanism that detect the spring, and control cam rotates the up end of installing at the workstation, and slip mount table slidable mounting is in the up end of workstation, and the outer wall of slip mount table is laminated with the outer wall slip of control cam.

The deflection preventing mechanism comprises a guide rod, a bearing support and a limiting pin, wherein the bearing support is fixedly arranged on the outer wall of the workbench, the guide rod is detachably arranged on the outer wall of the bearing support, the guide rod penetrates through the fixed mounting table, the limiting pin is elastically arranged on the outer wall of the fixed mounting table, and therefore the detection spring can be prevented from transitionally bending deformation along the radial direction, and the accuracy of experiments is improved.

Preferably, the upper end face of the workbench is slidably provided with a support frame, the sliding mounting table is fixedly mounted on the outer wall of the support frame, the guide rod penetrates through the sliding mounting table and is slidably connected with the sliding mounting table, and the sliding mounting table and the workbench are slidably connected through the support frame.

Preferably, the bottom surface of the workbench is fixedly provided with a control motor, an output shaft of the control motor extends to the upper end surface of the workbench and is fixedly connected with the central position of the axial end of the control cam, and the control motor drives the control cam to rotate.

Preferably, the side that sliding mounting platform and fixed mounting platform are close to each other all demountable installation has the limiting plate, and one side of limiting plate sets up to the arc with detecting the outer wall adaptation of spring, realizes detecting the fixed of spring through the limiting plate.

Preferably, the inner wall fixed mounting of fixed mounting platform has the roof pressure spring, and the other end of roof pressure spring and the outer wall fixed connection of spacer pin for the spacer pin has the trend of pegging graft with the guide bar in real time, improves the stability of fixed mounting platform installation.

Preferably, the outer wall of the bearing support is slidably provided with a mounting pin, one end of the mounting pin penetrates through the bearing support and is slidably inserted into the outer wall of the guide rod, and the guide rod is fixed by inserting the mounting pin into the guide rod.

Compared with the prior art, the utility model has the beneficial effects that:

According to the utility model, the detection spring to be detected is fixedly arranged between the movable mounting table and the fixed mounting table during detection through the guide rod, the fixed mounting table is fixed with the guide rod through the limit pin, the rotary control cam controls the sliding mounting table to slide back and forth to compress and release the spring, so that the fatigue degree of the detection spring can be detected, the guide rod penetrates through the detection spring, and the detection spring can be prevented from transitionally bending deformation along the radial direction when the detection spring is elastically deformed, so that the accuracy of experiments is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram illustrating the installation of a driving motor according to the present utility model;

FIG. 3 is a schematic view of the installation of a guide bar according to the present utility model;

Fig. 4 is a cross-sectional view of a stationary mounting table according to the present utility model.

In the figure: 1. a work table; 2. a control cam; 3. a sliding mounting table; 4. detecting a spring; 5. a limiting pin; 6. a guide rod; 7. a mounting pin; 8. a load bearing bracket; 9. a fixed mounting table; 10. a support frame; 11. controlling a motor; 12. a pressing spring; 13. and a limiting plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-4, a fatigue-resistant experimental device in the drawings comprises a workbench 1, a detection spring 4, a control cam 2, a sliding mounting table 3 for mounting the detection spring 4, a fixed mounting table 9 and an anti-deflection mechanism, wherein a support column is arranged on the bottom surface of the workbench 1 and used for being connected with the ground.

The control cam 2 is rotatably arranged on the upper end surface of the workbench 1, and the control cam 2 can rotate along the axis of the control cam 2.

The sliding mounting table 3 is slidably mounted on the upper end surface of the table 1, and the sliding mounting table 3 can slide in the horizontal direction.

The outer wall of the sliding mounting table 3 is in sliding fit with the outer wall of the control cam 2, the control cam 2 is rotated, and the sliding mounting table 3 is pressed against the radial outer wall of the control cam 2, so that the sliding mounting table 3 is controlled to slide.

In the experiment, the sliding mounting table 3 is fixed, then one end of the detection spring 4 to be detected is fixed with the sliding mounting table 3, then the other end of the detection spring 4 is fixed with the sliding mounting table 3, the rotation control cam 2 controls the sliding mounting table 3 to slide reciprocally, and the spring is compressed and released, so that the fatigue degree of the detection spring 4 can be detected.

The anti-deviation mechanism comprises a guide rod 6, a bearing bracket 8 and a limiting pin 5, wherein the bearing bracket 8 is fixedly arranged on the outer wall of the workbench 1, and the bearing bracket 8 is a common L-shaped bracket.

The guide bar 6 demountable installation is at the outer wall that bears support 8, and guide bar 6 runs through fixed mounting platform 9, and during the detection, guide bar 6 runs through detection spring 4, when detection spring 4 takes place elastic deformation, can prevent to detect spring 4 along radial transition bending deformation to improve the accuracy of experiment.

The locating pin 5 elastic mounting is at the outer wall of fixed mounting platform 9, has seted up the holding portion of cylinder at the outer wall of guide bar 6, and locating pin 5 runs through fixed mounting platform 9 and pegging graft with guide bar 6, realizes fixed mounting platform 9's fixed to the detection experiment of being convenient for.

The cylinder accommodating parts on the outer wall of the guide rod 6 are uniformly provided with a plurality of limiting pins 5 which are inserted into the accommodating parts at different positions, so that the fixing of the fixed mounting table 9 can be realized at different positions, and the detection experiment of the detection springs 4 with different lengths is adapted.

The outer wall sliding mounting of bearing support 8 has mounting pin 7, and the one end of mounting pin 7 runs through bearing support 8 and with the outer wall sliding grafting of guide bar 6, through mounting pin 7 and guide bar 6 grafting, realizes the fixed of guide bar 6.

When the experiment is carried out by replacing different detection springs 4, the mounting pin 7 is pulled out, the sliding limiting pin 5 is separated from the guide rod 6, finally the guide rod 6 is pulled out from the outer wall of the bearing bracket 8, the other detection spring 4 is replaced, the guide rod 6 is reinserted, the guide rod 6 is fixed by the mounting pin 7, and the fixed mounting table 9 is fixed by the limiting pin 5, so that the replacement is completed.

Example 2

Referring to fig. 1-4, this embodiment further illustrates example 1:

The upper end face sliding mounting of workstation 1 has support frame 10, and the outer wall of support frame 10 is laminated with the outer wall sliding of workstation 1, and sliding mounting platform 3 fixed mounting is at the outer wall of support frame 10, realizes sliding connection of sliding mounting platform 3 and workstation 1 through support frame 10.

The guide rod 6 penetrates the sliding mounting table 3 and is in sliding connection with the sliding mounting table 3, and when the sliding mounting table 3 is adjusted in a sliding manner, the sliding stability of the sliding mounting table 3 can be effectively improved.

The bottom surface of the workbench 1 is fixedly provided with a control motor 11, the control motor 11 is a common stepping motor, the specific model of the control motor can be selected according to actual use requirements, and redundant description is omitted here.

The output shaft of the control motor 11 extends to the upper end surface of the workbench 1 and is fixedly connected with the central position of the axial end of the control cam 2, and the control cam 2 is driven to rotate by the control motor 11.

The side that sliding mounting platform 3 and fixed mounting platform 9 are close to each other all demountable installation has limiting plate 13, and limiting plate 13 passes through the screw installation fixed.

One side of the limiting plate 13 is arranged into an arc shape matched with the outer wall of the detection spring 4, and the fixation of the detection spring 4 is realized through the limiting plate 13.

The inner wall fixed mounting of fixed mounting platform 9 has roof pressure spring 12, and roof pressure spring 12's the other end and the outer wall fixed connection of spacer pin 5 for the spacer pin 5 has the trend of pegging graft with guide bar 6 in real time through roof pressure spring 12's elasticity, improves the stability of fixed mounting platform 9 installation.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process-method-article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process-method-article or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes-modifications-substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fatigue resistance experimental apparatus which characterized in that: the automatic detection device comprises a workbench (1), a detection spring (4), a control cam (2), a sliding mounting table (3) for mounting the detection spring (4), a fixed mounting table (9) and an anti-deviation mechanism, wherein the control cam (2) is rotatably mounted on the upper end face of the workbench (1), the sliding mounting table (3) is slidably mounted on the upper end face of the workbench (1), and the outer wall of the sliding mounting table (3) is slidably attached to the outer wall of the control cam (2);

The anti-deviation mechanism comprises a guide rod (6), a bearing support (8) and a limiting pin (5), wherein the bearing support (8) is fixedly installed on the outer wall of the workbench (1), the guide rod (6) is detachably installed on the outer wall of the bearing support (8), the guide rod (6) penetrates through the fixed installation table (9), and the limiting pin (5) is elastically installed on the outer wall of the fixed installation table (9).

2. The fatigue resistance experimental device according to claim 1, wherein: the upper end face of the workbench (1) is slidably provided with a supporting frame (10), the sliding installation table (3) is fixedly installed on the outer wall of the supporting frame (10), and the guide rod (6) penetrates through the sliding installation table (3) and is slidably connected with the sliding installation table (3).

3. The fatigue resistance experimental device according to claim 1, wherein: the bottom surface of workstation (1) fixed mounting has control motor (11), the output shaft of control motor (11) extends to the up end of workstation (1) to with axial end central point of control cam (2) puts fixed connection.

4. The fatigue resistance experimental device according to claim 1, wherein: the sliding mounting table (3) and the side, close to each other, of the fixed mounting table (9) are detachably provided with limiting plates (13), and one side of each limiting plate (13) is arranged into an arc shape matched with the outer wall of the corresponding detection spring (4).

5. The fatigue resistance experimental device according to claim 1, wherein: the inner wall of the fixed mounting table (9) is fixedly provided with a jacking spring (12), and the other end of the jacking spring (12) is fixedly connected with the outer wall of the limiting pin (5).

6. The fatigue resistance experimental device according to claim 1, wherein: the outer wall sliding mounting of bearing support (8) has mounting pin (7), the one end of mounting pin (7) runs through bearing support (8) and with the outer wall sliding grafting of guide bar (6).