CN215574396U

CN215574396U - Bellows fatigue test machine that degree of accuracy is high

Info

Publication number: CN215574396U
Application number: CN202121036184.9U
Authority: CN
Inventors: 严功章
Original assignee: Smick Machinery Nanjing Co ltd
Current assignee: Smick Machinery Nanjing Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2022-01-18
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses a high-accuracy corrugated pipe fatigue testing machine, which particularly relates to the field of mechanical engineering and comprises a testing machine table, wherein the left side and the right side of the upper surface of the testing machine table are fixedly connected with mounting and fixing plates, the upper surfaces of the mounting and fixing plates are fixedly connected with sliding columns, the upper end surfaces of the two sliding columns are fixedly connected with an upper limit top plate, the upper outer surface and the lower outer surface of each sliding column are respectively sleeved with a second sliding ring and a first sliding ring, the other side surface of the first sliding ring is fixedly connected with a first frame plate, and the other side surface of the second sliding ring is fixedly connected with a second frame plate. According to the utility model, the first frame plate is arranged, the clamping is clamped in the middle of the corrugated pipe, and then the first frame plate is driven by the piston cylinder to realize up-and-down movement and stretching, so that the process of operation and stretching in a fatigue test is realized, and the balanced fatigue test values of the upper end and the lower end of the stretching are more accurate.

Description

Bellows fatigue test machine that degree of accuracy is high

Technical Field

The utility model relates to the technical field of machinery, in particular to a bellows fatigue testing machine with high accuracy.

Background

The fatigue testing machine is a machine mainly used for testing the fatigue performance of metal and alloy materials thereof under the condition of tensile, compression or tensile and compression alternating load at room temperature, and the corrugated pipe fatigue testing machine is mainly used for testing the mechanical performance of metal corrugated pipes, plastic corrugated pipes, stainless steel corrugated pipes, copper corrugated pipes, corrugated expansion joints, diaphragm and bellows, and the like, compression fatigue, fatigue life and the like.

However, in practical use, when some corrugated pipe fatigue testing machines perform fatigue testing, the main places for applying tensile force are often the two ends of the corrugated pipe, so that the fatigue testing is unbalanced, and the tested test value is also prone to generating inaccurate conditions.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above drawbacks of the prior art, embodiments of the present invention provide a bellows fatigue testing machine with high accuracy, so as to solve the problems mentioned in the above background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a corrugated pipe fatigue testing machine with high accuracy comprises a testing machine table, wherein the left side and the right side of the upper surface of the testing machine table are fixedly connected with a mounting fixing plate, the upper surface of the mounting fixing plate is fixedly connected with sliding columns, the upper end surfaces of the two sliding columns are fixedly connected with an upper limit top plate, the upper outer surface and the lower outer surface of each sliding column are respectively sleeved with a second sliding ring and a first sliding ring, the other side surface of the first sliding ring is fixedly connected with a first frame plate, the other side surface of the second sliding ring is fixedly connected with a second frame plate, the middles of the upper surface of the testing machine table and the second frame plate are respectively and fixedly connected with an end fixing snap ring, the two sides of the end fixing snap ring are respectively and threadedly connected with a fastening stud, the other end of the fastening stud is rotatably connected with a clamping fixing block through a bearing, and the middle of the first frame plate is fixedly connected with an experiment traction ring, the movable groove has all been seted up to side surface around the experiment driving ring, fixedly connected with rotates the post between inner wall and the lower inner wall on the movable groove, it is equipped with the positioning fixture block to rotate the cover through the bearing to rotate the post surface, positioning fixture block one end department inside surface fixedly connected with limit spring the fixed fixture block of side surface fixedly connected with in the positioning fixture block.

In order to let piston cylinder drive No. two sliding rings and a sliding ring, the equal fixedly connected with slide rail pole in upper limit roof both ends outside surface, No. two sliding rings and the equal fixedly connected with piston cylinder in a sliding ring outside surface, piston cylinder sliding connection is in slide rail pole surface.

In order to limit the upper end and the lower end of the second sliding ring and the first sliding ring and simultaneously have the anti-collision and shock-absorbing effects, limiting buffer springs are fixedly sleeved on the outer surfaces of the two ends of the sliding column.

In order to avoid severe collision during adjustment between the second sliding ring and the first sliding ring, a buffer movable spring is sleeved between the second sliding ring and the first sliding ring and on the outer surface of the sliding column.

In order to enable the positioning clamping block to be in an inward clamping state normally by the aid of acting force of the limiting spring, the other end of the limiting spring is fixedly connected with the outer surface of the first frame plate.

In order to enable the clamping fixing block and the fixing clamping block to be more firm in clamping connection, the outer surfaces of the fixing clamping block and the clamping fixing block are fixedly connected with anti-skidding lugs.

In order to position the upper end of the corrugated pipe, the upper end of the corrugated pipe can move up and down according to the length of the corrugated pipe for positioning, and positioning studs are connected to the outer side surfaces of the second sliding rings in a threaded mode.

The utility model has the technical effects and advantages that:

1. compared with the prior art, the first frame plate is arranged, the two ends of the corrugated pipe are respectively fixed on the end fixing snap ring on the upper surface of the test machine table and the end fixing snap ring in the middle of the second frame plate, the corrugated pipe penetrates through the interior of the experiment traction ring, is clamped in the middle of the corrugated pipe through the positioning clamping block and the fixing clamping block and by means of the acting force of the limiting spring, and then is driven by the piston cylinder to enable the first frame plate to move up and down and stretch, so that the process of operating stretching in the middle fatigue test is realized, and the stretching of the upper end and the lower end is more balanced, so that the fatigue test value is more accurate;

2. compared with the prior art, through setting up skid proof block for centre gripping fixed block and fixed fixture block all are more firm in the joint, because bellows body outward appearance is the smooth surface just, so utilize skid proof block to connect more conveniently.

Drawings

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

FIG. 2 is an enlarged schematic view of the structure at A of the present invention.

FIG. 3 is an enlarged view of the structure of the present invention at B.

Fig. 4 is a schematic structural diagram of a positioning fixture block of the present invention.

The reference signs are: 1. a test machine platform; 2. mounting a fixed plate; 3. a sliding post; 4. an upper ceiling plate; 5. a limiting buffer spring; 6. a first sliding ring; 7. a second slip ring; 8. a buffer movable spring; 9. a piston cylinder; 10. a sliding guide rail rod; 11. a first frame plate; 12. a second frame plate; 13. an experimental drag ring; 14. a movable groove; 15. rotating the column; 16. positioning a fixture block; 17. a limiting spring; 18. fixing the fixture block; 19. the end part is fixed with a snap ring; 20. fastening a stud; 21. clamping a fixed block; 22. an anti-slip bump; 23. and positioning the stud.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the bellows fatigue testing machine with high accuracy comprises a testing machine table 1, wherein the left side and the right side of the upper surface of the testing machine table 1 are fixedly connected with an installation fixing plate 2, the upper surface of the installation fixing plate 2 is fixedly connected with a sliding column 3, and the upper end surfaces of the two sliding columns 3 are fixedly connected with an upper limit top plate 4.

Wherein, as shown in figure 2, the surface is equipped with No. two sliding rings 7 and a sliding ring 6 respectively about the sliding column 3, No. 6 another side surfaces of sliding ring fixedly connected with frame plate 11, No. two frame plates 12 of 7 another side surfaces of sliding ring, equal fixedly connected with tip snap ring 19 in the middle of 1 upper surface of experimental board and No. two frame plates 12, the equal threaded connection in tip snap ring 19 both sides has fastening bolt 20, the fastening bolt 20 other end all is connected with centre gripping fixed block 21 through the bearing rotation.

As shown in fig. 3, an experiment traction ring 13 is fixedly connected in the middle of a frame plate 11, movable grooves 14 are formed in the outer surfaces of the front side and the rear side of the experiment traction ring 13, a rotating column 15 is fixedly connected between the upper inner wall and the lower inner wall of each movable groove 14, a positioning fixture block 16 is sleeved on the outer surface of each rotating column 15 in a rotating mode through a bearing, and a limiting spring 17 is fixedly connected to the inner surface of one end of each positioning fixture block 16.

As shown in fig. 4, a fixing block 18 is fixedly connected to an inner side surface of the positioning block 16.

In a preferred embodiment, as shown in fig. 1, the outer side surfaces of both ends of the upper limit top plate 4 are fixedly connected with a sliding guide rod 10, the outer side surfaces of the second sliding ring 7 and the first sliding ring 6 are fixedly connected with a piston cylinder 9, and the piston cylinder 9 is slidably connected to the outer surface of the sliding guide rod 10, so that the piston cylinder 9 drives the second sliding ring 7 and the first sliding ring 6 to move the second sliding ring 7 and the first sliding ring 6 up and down.

In a preferred embodiment, as shown in fig. 1, the outer surfaces of both ends of the sliding column 3 are fixedly sleeved with limiting buffer springs 5, so that the upper and lower end parts of the second sliding ring 7 and the first sliding ring 6 are limited and have an anti-collision and shock-absorbing effect.

In a preferred embodiment, as shown in fig. 1, a buffer movable spring 8 is sleeved between the second sliding ring 7 and the first sliding ring 6 and with the outer surface of the sliding column 3, so that severe collision is avoided during adjustment between the second sliding ring 7 and the first sliding ring 6.

In a preferred embodiment, as shown in fig. 3, the other end of the limiting spring 17 is fixedly connected to the outer surface of the first frame plate 11, so that the fixture block 16 is normally in an inward clamping state by the force of the limiting spring 17, and the fixture block 16 is pressed to be released.

In a preferred embodiment, as shown in fig. 4, the outer surfaces of the fixing block 18 and the clamping fixing block 21 are fixedly connected with the anti-slip bump 22, so that the clamping fixing block 21 and the fixing block 18 are clamped more firmly, and the corrugated pipe body is not smooth in appearance, so that the connection by the anti-slip bump 22 is more convenient.

In a preferred embodiment, as shown in fig. 1, the outer side surfaces of the second sliding rings 7 are respectively connected with a positioning stud 23 in a threaded mode, so that the upper end of the corrugated pipe can be positioned in an up-and-down mode according to the length of the corrugated pipe.

The working principle of the utility model is as follows: firstly, two ends of a corrugated pipe are respectively fixed on an end fixing snap ring 19 on the upper surface of a test machine table 1 and an end fixing snap ring 19 in the middle of a second frame plate 12, the corrugated pipe penetrates through the interior of an experiment traction ring 13, passes through a positioning fixture block 16 and a fixing fixture block 18 and is clamped in the middle of the corrugated pipe by means of the acting force of a limiting spring 17, and then the corrugated pipe is driven by a piston cylinder 9 to enable a first frame plate 11 to move up and down and stretch, so that the process of operating stretching in a middle fatigue test is realized, and the stretching of the upper end and the lower end is more balanced, so that the fatigue test value is more accurate; and the anti-skid lugs 22 are arranged, so that the clamping fixing block 21 and the fixing clamping block 18 are more firmly clamped, and the anti-skid lugs 22 are more convenient to connect because the appearance of the corrugated pipe body is not a smooth surface.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the utility model, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the utility model can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a bellows fatigue test machine that degree of accuracy is high, includes test board (1), its characterized in that: the left side and the right side of the upper surface of the test machine table (1) are fixedly connected with an installation fixing plate (2), the upper surface of the installation fixing plate (2) is fixedly connected with sliding columns (3), the upper end surfaces of the two sliding columns (3) are fixedly connected with an upper limit top plate (4) mutually, the upper outer surface and the lower outer surface of each sliding column (3) are respectively sleeved with a second sliding ring (7) and a first sliding ring (6), the other side surface of each sliding ring (6) is fixedly connected with a first frame plate (11), the other side surface of each second sliding ring (7) is fixedly connected with a second frame plate (12), the middle parts of the upper surface of the test machine table (1) and the middle parts of the second frame plates (12) are fixedly connected with end fixing snap rings (19), the two sides of the end fixing snap rings (19) are both in threaded connection with fastening studs (20), and the other ends of the fastening studs (20) are both in rotation connection with clamping fixing blocks (21) through bearings, the frame plate I (11) is fixedly connected with an experiment traction ring (13) in the middle, movable grooves (14) are formed in the outer surfaces of the front side and the rear side of the experiment traction ring (13), a rotating column (15) is fixedly connected between the upper inner wall and the lower inner wall of each movable groove (14), a positioning clamping block (16) is rotatably sleeved on the outer surface of each rotating column (15) through a bearing, a limiting spring (17) is fixedly connected to the inner side surface of one end of each positioning clamping block (16), and a fixed clamping block (18) is fixedly connected to the inner side surface of each positioning clamping block (16).

2. The bellows fatigue testing machine with high accuracy according to claim 1, wherein: the equal fixedly connected with slide rail pole (10) in upper limit roof (4) both ends outside surface, No. two sliding rings (7) and sliding ring (6) outside surface equal fixedly connected with piston cylinder (9), piston cylinder (9) sliding connection is in slide rail pole (10) surface.

3. The bellows fatigue testing machine with high accuracy according to claim 1, wherein: the outer surfaces of the two ends of the sliding column (3) are fixedly sleeved with limiting buffer springs (5).

4. The bellows fatigue testing machine with high accuracy according to claim 1, wherein: a buffer movable spring (8) is sleeved between the second sliding ring (7) and the first sliding ring (6) and on the outer surface of the sliding column (3).

5. The bellows fatigue testing machine with high accuracy according to claim 1, wherein: the other end of the limiting spring (17) is fixedly connected with the outer surface of the first frame plate (11).

6. The bellows fatigue testing machine with high accuracy according to claim 1, wherein: the outer surfaces of the fixed clamping block (18) and the clamping fixed block (21) are fixedly connected with anti-skidding lugs (22).

7. The bellows fatigue testing machine with high accuracy according to claim 1, wherein: and the outer side surfaces of the second sliding rings (7) are in threaded connection with positioning studs (23).