Dynamic and static fatigue testing machine

Abstract

The utility model discloses a dynamic and static fatigue testing machine, which comprises a rack, a driving mechanism and a driving mechanism, wherein a placing table is arranged on the top surface of the rack; the lifting assembly comprises a gear motor, a transmission mechanism and a plurality of lead screws, the gear motor is fixed in the rack, an input piece of the transmission mechanism is connected with an output shaft of the gear motor, and an output piece of the transmission mechanism is connected with the lead screws; a plurality of nuts matched with the lead screw are arranged in the lifting table, and the lifting table is installed on the lead screw; and the driving device is fixed to the lifting table, a force application piece is arranged on an output shaft of the driving device, and the force application piece is right opposite to the containing table. The device comprises the lifting assembly and the lifting platform, the driving device is fixed on the lifting platform, and the lifting platform and the driving device can be driven by the lifting assembly to ascend and descend to be close to or far away from a to-be-tested material, so that the device can adapt to the to-be-tested materials with different heights.

Description

TECHNICAL FIELD

[0001] The utility model relates to material test technical field, and mainly relates to a dynamic static fatigue testing machine. BACKGROUND

[0002] Fatigue testing machine, it is a kind of machine mainly used to determine the fatigue performance test of tensile, compression or tensile, compression alternating load of nonmetal, metal and its alloy material at room temperature.

[0003] A kind of fatigue testing machine in the related art, including rack, placing table is arranged on the rack, hydraulic cylinder is arranged above the rack, output shaft of the hydraulic cylinder is arranged with down head, the down head is opposite with placing table.When fatigue test is carried out to material, just the material to be measured is placed on placing table, then start hydraulic cylinder, and the repeated dynamic or long-term static fatigue test of down head to the material to be measured is driven by hydraulic cylinder.

[0004] The inventor of the present application found at least the following problems in the process of implementing the above-mentioned fatigue testing machine:

[0005] The output shaft of the hydraulic cylinder of the above-mentioned fatigue testing machine has limited extension, so it can only perform dynamic and static fatigue test on materials within a certain height range. If the height of the material to be measured exceeds the range, it will affect the fatigue test of the material to be measured. UTILITY MODEL CONTENT

[0006] The utility model aims at solving some problems existing in the prior art. To this end, the purpose of the utility model is to provide a dynamic and static fatigue testing machine.

[0007] To achieve the above-mentioned purpose, the utility model realizes by the following technical scheme:

[0008] A dynamic and static fatigue testing machine, comprising:

[0009] Rack, the top surface of the rack is provided with a placing table;

[0010] Lifting assembly, the lifting assembly comprises a speed reducer, a transmission mechanism and a plurality of lead screws, the speed reducer is fixed inside the rack, the input of the transmission mechanism is connected with the output shaft of the speed reducer, and the output of the transmission mechanism is connected with the lead screw;

[0011] Lifting platform, a plurality of nuts matched with the lead screws are arranged in the lifting platform, and the lifting platform is installed on the lead screw;

[0012] Driving device, the driving device is fixed on the lifting platform, a force applying member is arranged on the output shaft of the driving device, and the force applying member is opposite to the placing table.

[0013] Further, based on the scheme, the transmission mechanism comprises a first synchronous pulley, a belt and a second synchronous pulley, the first synchronous pulley is an input of the transmission mechanism and is connected with an output shaft of the speed reducer, the second synchronous pulley is an output of the transmission mechanism and is connected with the lead screw, and the belt is sleeved on the first synchronous pulley and the second synchronous pulley.

[0014] Further, based on the scheme, the rack is internally provided with a plurality of tension pulleys, and the belt is in close contact with the tension pulleys.

[0015] Further, based on the scheme, the adjustable assembly is further provided, the speed reducer is fixed on the adjustable assembly, the adjustable assembly comprises a supporting frame, a plurality of fasteners, a fixing seat and a plurality of abutting pieces, the supporting frame is fixed on the inner top of the rack, waist-shaped holes are formed in the two sides of the supporting frame, a plurality of threaded holes matched with the waist-shaped holes are formed in the inner top of the rack, the fasteners are installed in the waist-shaped holes and the threaded holes, the fixing seat is fixed on the inner top of the rack, and the abutting pieces are arranged in the fixing seat and abut against the supporting frame at one end.

[0016] Further, based on the scheme, the speed reducer is fixed on the supporting frame of the adjustable assembly.

[0017] Further, based on the scheme, the fastener is a screw.

[0018] Further, based on the scheme, the abutting piece is a screw rod.

[0019] Further, based on the scheme, the rack is provided with guide columns on the two sides, one end of the guide column is fixed to the rack, and the other end is provided with a bearing seat plate.

[0020] Further, based on the scheme, the bearing seat plate and the rack are provided with bearing sleeves and bearings, and the lead screw is arranged in the bearings at the two ends.

[0021] Further, based on the scheme, the bottom of the rack is provided with a plurality of Forma wheels.

[0022] Compared with the prior art, the utility model has the advantages that:

[0023] 1. The utility model discloses a lifting assembly and a lifting table, and a driving device is fixed on the lifting table, the lifting table and the driving device can be lifted through the lifting assembly, and the driving device can be close to or away from the material to be measured, so that the material to be measured of different heights can be adapted.

[0024] 2. The utility model discloses an adjustable assembly, and the speed reducer is fixed on the adjustable assembly, the position of the speed reducer can be adjusted through the adjustable assembly, and the belt can be tensioned through the cooperation of the tension pulleys.

[0025] The features and advantages of the present application will be illustrated in detail through the following embodiments combined with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a perspective view of the dynamic and static fatigue testing machine of the present application;

[0027] Figure 2 It is a front view of the dynamic and static fatigue testing machine of the present application;

[0028] Figure 3 It is the A-A sectional view and the local enlarged view in the present application Figure 2

[0029] Figure 4 It is the perspective view of the lifting assembly of the present application Figure 1

[0030] Figure 5 It is the perspective view of the lifting assembly of the present application Figure 2

[0031] Figure 6 It is the plan view of the lifting assembly of the present application.

[0032] Reference signs:

[0033] 1. frame, 2. placing table, 3. speed reducer motor, 4. screw rod, 5. lifting table, 6. nut, 7. driving device, 8. force applying piece, 9. first synchronous pulley, 10. belt, 11. second synchronous pulley, 12. tension pulley, 13. support frame, 14. fastening piece, 15. fixed seat, 16. abutting piece, 17. waist-shaped hole, 18. threaded hole, 19. guide column, 20. bearing seat plate, 21. bearing sleeve, 22. bearing, 23. Foma wheel. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects realized by the present application easy to understand, the following further describes the present application in combination with specific embodiments.

[0035] The exemplary embodiments will be described in detail hereinbelow with reference to the drawings. When the following description refers to the drawings, identical numbers on different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments are not meant to represent all implementations consistent with the present application. Rather, they are merely examples of apparatuses consistent with some aspects of the present application as detailed in the appended claims.

[0036] ​​​The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The present application will be described with reference to the attached drawings and figures, which are given by way of illustration only. The same reference numerals in different figures identify the same elements. "An" or "one" or similar referents in the context of an embodiment do not exclude more than one, whereas the use of the term "another" or "at least one" in the context of an embodiment does not exclude more than one. The terms "comprising", "having", "including", and "containing" are to be construed open-ended terms (i.e., meaning "including, but not limited to") unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated in the specification as if it were individually recited herein. The terms "coupled" and "connected" and "interconnected" are not limited to direct connections, but rather can include indirect connections unless otherwise indicated herein. The terms "coupled" and "connected" and "interconnected" are not limited to direct connections, but rather can include indirect connections unless otherwise indicated herein. The terms "coupled" and "connected" and "interconnected" are not limited to direct connections, but rather can include indirect connections unless otherwise indicated herein. The term "about" when used before a numerical designation, e.g., "about Y", unless specifically indicated otherwise, means ± 10% of the indicated value "Y". Otherwise, the term "about" as used herein means approximately, around, roughly, or in the immediate vicinity, as understood by those having ordinary skill in the art. It is further noted that the terms "comprise", "comprising", "comprises", "include", "including", "includes", "contain", "containing", "has", "having", or "has" are not used in their exclusive sense.

[0037] Reference will be made to Figures 1-6 The dynamic and static fatigue testing machine comprises a rack 1, a lifting assembly, a lifting table 5 and a driving device 7. Specifically, the top surface of the rack 1 is provided with a placing table 2 for preventing the material to be tested; the lifting assembly comprises a speed reducer 3, a transmission mechanism and two lead screws 4, the speed reducer 3 is fixed in the interior of the rack 1, the input part of the transmission mechanism is connected with the output shaft of the speed reducer 3, and the output part of the transmission mechanism is connected with the lead screws 4; the lifting table 5 is provided with two nuts 6 matched with the lead screws 4, and the lifting table 5 is installed on the lead screws 4; the driving device 7 is fixed on the lifting table 5, and the output shaft of the driving device 7 is provided with a force applying part 8 opposite to the placing table 2.

[0038] Based on the above technical means, the lifting table 5 and the driving device 7 can be driven to move up and down by the lifting assembly, so as to be close to or far away from the material to be tested, so as to adapt to the materials to be tested with different heights.

[0039] In the embodiment, the driving device 7 comprises an electric cylinder and an electric cylinder cover, the electric cylinder cover is arranged outside the electric cylinder and plays a protective role on the electric cylinder. The electric cylinder works to drive the force applying part 8 to descend, thereby applying pressure to the material to be tested on the placing table 2.

[0040] In other possible embodiments, the driving device 7 adopts an oil cylinder and an oil cylinder cover.

[0041] Further, the transmission mechanism comprises a first synchronous pulley 9, a belt 10 and a second synchronous pulley 11, the first synchronous pulley 9 is the input of the transmission mechanism and is coupled with the output shaft of the speed reducer motor 3, the second synchronous pulley 11 is the output of the transmission mechanism and is coupled with the lead screw 4, and the belt 10 is sleeved on the first synchronous pulley 9 and the second synchronous pulley 11.

[0042] Further, the rack 1 is provided with guide columns 19 on both sides, the guide columns 19 are fixed at one end with the rack 1 and are provided with bearing seat plates 20 at the other end; the bearing seat plates 20 and the rack 1 are both provided with bearing sleeves 21 and bearings 22, and the lead screw 4 is respectively sleeved in the bearings 22 at both ends.

[0043] Specifically, the speed reducer motor 3 is powered on and works, the output shaft thereof rotates, drives the first synchronous pulley 9 to rotate, and further drives the belt 10 to drive the second synchronous pulley 11 and the lead screw 4 to rotate, so that the lifting platform 5 and the driving device 7 are lifted along the guide columns 19.

[0044] Further, the rack 1 is provided with two tension pulleys 12 inside, the two tension pulleys 12 are arranged left and right, the belt 10 is in close contact with the tension pulleys 12, the belt 10 is tensioned by the tension pulleys 12, so as to prevent the belt 10 from relaxing and affecting the transmission effect.

[0045] The dynamic and static fatigue testing machine further comprises an adjustable assembly, the speed reducer motor 3 is fixed on the adjustable assembly, the adjustable assembly comprises a support frame 13, four fasteners 14, a fixing seat 15 and two abutting pieces 16, the support frame 13 is fixed on the inner top of the rack 1, the speed reducer motor 3 is fixed on the support frame 13 of the adjustable assembly, the support frame 13 is provided with a waist-shaped hole 17 on both sides, the inner top of the rack 1 is provided with four threaded holes 18 matched with the waist-shaped holes 17, that is, one waist-shaped hole 17 corresponds to two threaded holes 18, the fasteners 14 are installed in the waist-shaped holes 17 and the threaded holes 18, the fixing seat 15 is fixed on the inner top of the rack 1, and the abutting pieces 16 are sleeved in the fixing seat 15 and abut against the support frame 13 at one end.

[0046] Based on the above technical means: when the belt 10 is relaxed, the tightness of the belt 10 can be adjusted through the adjustable assembly. Specifically, the fasteners 14 are loosened first, then the support frame 13 and the speed reducer motor 3 are moved, the first synchronous pulley 9 is also moved, at this time the tightness of the belt 10 is also changed, after the tightness of the belt 10 is adjusted, the fasteners 14 are tightened again to fix the support frame 13, and the abutting pieces 16 are rotated to abut against the support frame 13.

[0047] In the embodiment, the fasteners 14 are screws.

[0048] In the embodiment, the abutting member 16 is a screw rod, and the fixing seat 15 is provided with a screw hole for assembling the screw rod.

[0049] Further, the rack 1 is provided with four Forma wheels 23 at the bottom, which provide stable support and facilitate the movement and installation of the dynamic and static fatigue testing machine.

[0050] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dynamic and static fatigue testing machine, characterized in that, include: A frame, the top surface of which is provided with a placement platform; The lifting assembly includes a geared motor, a transmission mechanism, and several lead screws. The geared motor is fixed inside the frame. The input component of the transmission mechanism is connected to the output shaft of the geared motor, and the output component of the transmission mechanism is connected to the lead screws. A lifting platform, wherein a plurality of nuts adapted to the lead screw are provided in the lifting platform, and the lifting platform is installed on the lead screw; A driving device is fixed on a lifting platform, and a force-applying component is provided on the output shaft of the driving device, which is directly opposite to the placement platform.

2. The dynamic and static fatigue testing machine according to claim 1, characterized in that, The transmission mechanism includes a first synchronous pulley, a belt, and a second synchronous pulley. The first synchronous pulley is the input component of the transmission mechanism and is connected to the output shaft of the geared motor. The second synchronous pulley is the output component of the transmission mechanism and is connected to the lead screw. The belt is sleeved on the first synchronous pulley and the second synchronous pulley.

3. The dynamic and static fatigue testing machine according to claim 2, characterized in that, The frame is equipped with several tensioning pulleys, and the belt is in close contact with the tensioning pulleys.

4. The dynamic and static fatigue testing machine according to claim 1 or 3, characterized in that, It also includes an adjustable component, on which the geared motor is fixed. The adjustable component includes a support frame, several fasteners, a fixing seat, and several abutting members. The support frame is fixed to the top of the machine frame. The support frame has waist-shaped holes on both sides. The top of the machine frame has several threaded holes that match the waist-shaped holes. The fasteners are installed in the waist-shaped holes and the threaded holes. The fixing seat is fixed to the top of the machine frame. The abutting members are inserted into the fixing seat and abut against the support frame at one end.

5. The dynamic and static fatigue testing machine according to claim 4, characterized in that, The geared motor is fixed on the support frame of the adjustable component.

6. The dynamic and static fatigue testing machine according to claim 4, characterized in that, The fastener is a screw.

7. The dynamic and static fatigue testing machine according to claim 4, characterized in that, The clamping element is a screw.

8. The dynamic and static fatigue testing machine according to claim 1, characterized in that, Guide columns are provided on both sides of the frame. One end of the guide column is fixed to the frame, and the other end is provided with a bearing seat plate.

9. The dynamic and static fatigue testing machine according to claim 8, characterized in that, Both the bearing housing plate and the frame are equipped with bearing sleeves and bearings, and the two ends of the lead screw are respectively inserted into the bearings.

10. The dynamic and static fatigue testing machine according to claim 1, characterized in that, The bottom of the frame is equipped with several casters.

Images