Lifting measuring mechanism for fatigue testing machine

Abstract

The utility model relates to a lifting measuring mechanism for a fatigue testing machine, which comprises a support frame, a lifting component arranged at the top of the support frame and a measuring component arranged on one side of the support frame, and the lifting component comprises a lifting arm and a lifting seat for driving the lifting arm to move up and down; the measuring assembly comprises a diameter measuring instrument and a moving seat for driving the diameter measuring instrument to translate and lift. According to the utility model, the lifting assembly and the measuring assembly are integrated together, so that not only can the diameter of a simulated blood vessel be measured during a test, but also the distance between the two flange plates in the vertical fatigue testing machine can be adjusted as required, the operation is simple and convenient, the problem of angle deviation of the flange plates is avoided, and the normal proceeding of the test is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of fatigue testing devices, and in particular relates to a lifting and measuring mechanism for a fatigue testing machine. Background Art

[0002] The service life of cardiovascular implants such as artificial heart valves and vascular stents needs to be evaluated before they are put into use, and in vitro testing using fatigue testing machines is an important means of evaluation.

[0003] Since different types or specifications of vascular stents are adapted to different lengths of simulated blood vessels during testing, it is necessary to adjust the distance between the two flanges on the fatigue testing machine according to the length of the simulated blood vessels. Among them, the two flanges of the vertical fatigue testing machine are set up one above and one below, and the simulated blood vessels are connected between the two flanges. When adjusting the distance between the two flanges, the upper flange is generally moved up manually. This adjustment method is not only time-consuming and laborious, but also prone to the problem of angle deviation of the upper flange, which directly affects the normal progress of the test. Utility Model Content

[0004] The utility model aims to provide a lifting and measuring mechanism for a fatigue testing machine, so as to solve the problem of inconvenient adjustment of the distance between two flanges in a vertical fatigue testing machine.

[0005] The utility model is realized by a lifting and measuring mechanism for a fatigue testing machine as follows:

[0006] A lifting and measuring mechanism for a fatigue testing machine, comprising

[0007] Support frame,

[0008] A lifting assembly is arranged on the top of the support frame, and the lifting assembly includes a lifting arm and a lifting seat that drives the lifting arm to move up and down;

[0009] A measuring assembly is arranged on one side of the support frame, and the measuring assembly includes a caliper and a moving seat that drives the caliper to translate and rise and fall.

[0010] Furthermore, the lifting arm extends toward the side where the measuring component is located.

[0011] Furthermore, the lifting arm is a Z-shaped structure, and a connecting ring is provided at its outer end.

[0012] Furthermore, the lifting seat includes an adjusting screw rod arranged vertically, and a sliding seat connected to an adjusting nut on the adjusting screw rod, and the lifting arm is fixed on the sliding seat;

[0013] A rotating hand wheel is arranged on the top of the adjusting screw.

[0014] Furthermore, the lifting seat also includes a seat plate and an outer cover installed on the seat plate, and the adjusting screw is installed in the outer cover.

[0015] Furthermore, a guide side plate is provided on one side of the outer cover, a longitudinal guide gap is provided between the guide side plate and the outer cover, and a connecting plate connected to the adjusting nut extends from the guide gap and is connected to the slide seat;

[0016] The two sides of the guide side plate are provided with folded edges facing the outer cover, and the folded edges are slidably matched in the sliding grooves on the outer side surfaces of the connecting plates.

[0017] Furthermore, a scale indicator needle is arranged at one side edge of the connecting plate facing the outer cover, and a scale line cooperating with the scale indicator needle is arranged on the outer wall of the outer cover.

[0018] Furthermore, the movable seat comprises a lifting slide rail and a lifting slider mounted on the lifting slide rail, and the diameter gauge is fixed on the lifting slider;

[0019] A locking pin I is provided on one side of the lifting slide block.

[0020] Furthermore, the movable seat comprises a translation slide rail and a translation slider mounted on the translation slide rail, and the lifting slide rail is mounted on the translation slider;

[0021] A locking pin II is arranged on one side of the translation slide block.

[0022] Furthermore, a top plate is provided on the top of the support frame, and the lifting seat is fixed on the top plate;

[0023] A layer plate is arranged below the top plate, a convex plate extending outward is arranged on one side of the layer plate, and the measuring component is installed on the layer plate and is located on the side where the convex plate is located.

[0024] After adopting the above technical solution, the utility model has the following beneficial effects:

[0025] The utility model integrates a lifting component and a measuring component, which can not only measure the diameter of a simulated blood vessel during a test, but also adjust the distance between two flanges in a vertical fatigue testing machine as needed. The operation is simple and convenient, and the problem of flange angle deviation is avoided, thereby ensuring the normal progress of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] Figure 1 This is a structural diagram of a lifting and measuring mechanism for a fatigue testing machine according to a preferred embodiment of the utility model;

[0028] Figure 2 This is a structural diagram of a lifting and measuring mechanism for a fatigue testing machine according to a preferred embodiment of the utility model;

[0029] Figure 3 It is an exploded view of the lifting assembly of the lifting and measuring mechanism for a fatigue testing machine according to a preferred embodiment of the utility model;

[0030] In the figure: support frame 1, top plate 11, layer plate 12, convex plate 13, lifting component 2, lifting arm 21, connecting ring 22, adjusting screw 23, adjusting nut 24, slide seat 25, rotating hand wheel 26, handle 27, seat plate 28, outer cover 29, reinforcement plate 210, guide side plate 211, guide gap 212, connecting plate 213, avoidance groove 214, folding edge 215, slide groove 216, scale indicator needle 217, scale line 218, measuring component 3, diameter gauge 31, lifting slide rail 32, lifting slider 33, locking pin I 34, translation slide rail 35, translation slider 36, locking pin II 37. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-3 As shown, a lifting and measuring mechanism for a fatigue testing machine includes a support frame 1, a lifting assembly 2 arranged on the top of the support frame 1, and a measuring assembly 3 arranged on one side of the support frame 1. The lifting assembly 2 includes a lifting arm 21 and a lifting seat that drives the lifting arm 21 to move up and down; the measuring assembly 3 includes a caliper 31 and a moving seat that drives the caliper 31 to translate and rise and fall.

[0034] During fatigue testing of cardiovascular implants such as vascular stents, the vascular stent is placed in a simulated blood vessel, and the measuring component 3 is used to measure the diameter of the simulated blood vessel. Therefore, the measuring component 3 is set on one side of the support frame 1 and faces the testing mechanism, so as to facilitate the measurement of the simulated blood vessel.

[0035] Since the measuring assembly 3 is arranged toward the test mechanism, in order to connect the lifting arm 21 to the upper flange of the test mechanism, the lifting arm 21 extends toward the side where the measuring assembly 3 is located.

[0036] In order to facilitate connection with the flange, the lifting arm 21 is a Z-shaped structure, and a connecting ring 22 is provided at its outer end.

[0037] Specifically, a connecting bracket is provided at the top center of the upper flange of the test mechanism, and the connecting ring 22 can be connected to the connecting bracket by bolts, and then the lifting seat can drive the upper flange to move up and down through the lifting arm 21, thereby adjusting the distance between the two flanges.

[0038] In order to drive the lifting seat to move up and down, the lifting seat includes a vertically arranged adjusting screw 23 and a slide seat 25 connected to an adjusting nut 24 on the adjusting screw 23 , and the lifting arm 21 is fixed on the slide seat 25 .

[0039] By rotating the adjusting screw 23 , the adjusting nut 24 moves in the axial direction of the adjusting screw 23 , thereby driving the slide 25 and the lifting arm 21 mounted on the slide 25 to move up and down.

[0040] In order to facilitate the rotation of the adjusting screw 23 , a rotating hand wheel 26 is provided on the top of the adjusting screw 23 .

[0041] Preferably, a handle 27 is hinged on the top of the rotating handwheel 26, and the handle 27 can be folded in a groove on the top of the rotating handwheel 26. When the adjusting screw 23 needs to be rotated, the handle 27 can be turned out first, and then the rotating handwheel 26 can be rotated while holding the handle 27 to drive the adjusting screw 23 to rotate.

[0042] The method of driving the slide 25 to rise and fall is not limited to the combination of the manual adjustment screw 23 and the adjustment nut 24, and a combination of electric drive and the adjustment screw 23 can also be used, or electric drive methods such as linear motors can be directly used.

[0043] In order to facilitate the installation of the adjusting screw 23 , the lifting seat further includes a seat plate 28 and an outer cover 29 installed on the seat plate 28 , and the adjusting screw 23 is installed in the outer cover 29 .

[0044] Specifically, the outer cover 29 is fixed on the seat plate 28 , and a reinforcing plate 210 is provided on one side of the outer cover 29 to ensure the stability of the outer cover 29 .

[0045] In this embodiment, the reinforcing plate 210 is located at the opposite side of the slide seat 25 to prevent it from affecting the upward and downward movement of the slide seat 25 .

[0046] In order to guide the up and down movement of the slide 25, a guide side plate 211 is provided on one side of the outer cover 29, and a longitudinal guide gap 212 is provided between the guide side plate 211 and the outer cover 29. A connecting plate 213 connected to the adjusting nut 24 extends from the guide gap 212 and is connected to the slide 25.

[0047] Specifically, the upper end of the guide side plate 211 is fixed to the top of the outer cover 29 , the guide slots 212 are located on both sides of the guide side plate 211 , and the side edges of the connecting plate 213 extend from the corresponding guide slots 212 and are connected to the slide seat 25 .

[0048] Preferably, a side of the slide seat 25 facing the outer cover 29 is provided with an avoidance groove 214 that cooperates with the guide side plate 211 .

[0049] In order to ensure the stability of the fit between the guide side plate 211 and the connecting plate 213 and improve the guiding effect, folded edges 215 facing the outer cover 29 are provided on both sides of the guide side plate 211, and the folded edges 215 are slidably fitted in the sliding groove 216 on the outer side of the connecting plate 213.

[0050] When the adjusting screw 23 rotates, the guide side plate 211 and the outer cover 29 are fixed, and the adjusting nut 24 drives the connecting plate 213 and the slide seat 25 to rotate upward or downward. At this time, the slide groove 216 of the connecting plate 213 moves up or down relative to the folding edge 215 to play a guiding function.

[0051] In order to clearly define the specific distances moved by the slide 25 , the lifting arm 21 and the upper flange, a scale indicator needle 217 is provided at one edge of the connecting plate 213 facing the outer cover 29 , and a scale line 218 cooperating with the scale indicator needle 217 is provided on the outer wall of the outer cover 29 .

[0052] By cooperating with the scale indicator needle 217 and the scale line 218, the accuracy of adjusting the distance between the two flanges can be improved to accurately match the simulated blood vessel of the corresponding length.

[0053] During the test, it is necessary to measure the diameters of the simulated blood vessels at different positions. In order to be able to move the caliper 31 up and down to achieve the above purpose, the moving seat includes a lifting rail 32 and a lifting slider 33 installed on the lifting rail 32, and the caliper 31 is fixed on the lifting slider 33.

[0054] The caliper 31 can follow the lifting slider 33 to move up and down on the lifting rail 32 to achieve diameter measurement at different positions of different simulated blood vessels.

[0055] In order to fix the height of the lifting slide 33 and the diameter measuring instrument 31 , a locking pin I 34 is provided on one side of the lifting slide 33 .

[0056] After the lifting slider 33 and the diameter gauge 31 are moved to their positions, the locking pin I 34 is screwed down so that its inner end abuts against the side of the lifting rail 32 , thereby fixing the height positions of the lifting slider 33 and the diameter gauge 31 .

[0057] When there is no need to measure the diameter of the simulated blood vessel, in order to prevent the caliper 31 from affecting various operations of the test institution, such as replacing the test product and the simulated blood vessel, it is necessary to move the caliper 31 away from the test institution. Therefore, the moving seat includes a translation rail 35 and a translation slider 36 installed on the translation rail 35, and the lifting rail 32 is installed on the translation slider 36.

[0058] The translation slider 36 can drive the lifting slide rail 32, the lifting slider 33 and the diameter gauge 31 to move toward or away from the direction where the testing mechanism is located.

[0059] In order to fix the position of the translation slide 36 , a locking pin II 37 is provided on one side of the translation slide 36 .

[0060] After the caliper 31 is moved into position, the locking pin II 37 is tightened so that its inner end abuts against the side of the translation slide rail 35 , thereby fixing the position of the translation slide rail 36 and the caliper 31 .

[0061] In order to facilitate the installation of the lifting assembly 2 , a top plate 11 is provided on the top of the support frame 1 , and the lifting seat is fixed on the top plate 11 .

[0062] Specifically, the seat plate 28 of the lifting seat is fixed on the top plate 11 .

[0063] In order to facilitate the installation of the measuring component 3 , a layer plate 12 is provided below the top plate 11 , a convex plate 13 extending outward is provided on one side of the layer plate 12 , and the measuring component 3 is installed on the layer plate 12 and is located on the side where the convex plate 13 is located.

[0064] The side where the convex plate 13 is located is the side where the test mechanism is located. The measuring component 3 is installed at the convex plate 13, which can be conveniently coordinated with the test mechanism to achieve measurement of the simulated blood vessel diameter.

[0065] When performing fatigue tests on cardiovascular implants such as vascular stents, the distance between the two flanges must be adjusted according to the length of the simulated blood vessel. At this time, the lifting seat drives the lifting arm 21 to move upward or downward, and the lifting arm 21 can drive the upper flange to move upward or downward, thereby achieving the purpose of adjusting the distance between the two flanges. After the upper flange is moved into place, the two ends of the simulated blood vessel equipped with the cardiovascular implant are installed at the corresponding positions of the two flanges. After the test starts, the height and position of the caliper 31 are adjusted to measure the diameter of each simulated blood vessel.

[0066] The utility model has a simple structure and has the functions of simulating blood vessel diameter measurement and adjusting the distance between two flanges. It is easy to use and has high adjustment accuracy, thus ensuring the normal operation of the test.

[0067] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lifting and measuring mechanism for a fatigue testing machine, characterized in that: include Support frame (1), A lifting assembly (2) arranged on the top of the support frame (1), the lifting assembly (2) comprising a lifting arm (21) and a lifting seat for driving the lifting arm (21) to move up and down; A measuring assembly (3) is arranged on one side of the support frame (1), and the measuring assembly (3) comprises a caliper (31) and a moving seat for driving the caliper (31) to move horizontally and vertically.

2. The lifting and measuring mechanism for a fatigue testing machine according to claim 1, characterized in that: The lifting arm (21) extends toward the side where the measuring component (3) is located.

3. The lifting and measuring mechanism for a fatigue testing machine according to claim 1, characterized in that: The lifting arm (21) is a Z-shaped structure, and a connecting ring (22) is provided at its outer end.

4. The lifting and measuring mechanism for a fatigue testing machine according to claim 1, characterized in that: The lifting seat comprises an adjusting screw (23) arranged vertically, and a sliding seat (25) connected to an adjusting nut (24) on the adjusting screw (23), and the lifting arm (21) is fixed on the sliding seat (25); A rotating hand wheel (26) is provided on the top of the adjusting screw (23).

5. The lifting and measuring mechanism for a fatigue testing machine according to claim 4, characterized in that: The lifting seat also includes a seat plate (28) and an outer cover (29) installed on the seat plate (28), and the adjusting screw (23) is installed in the outer cover (29).

6. The lifting and measuring mechanism for a fatigue testing machine according to claim 5, characterized in that: A guide side plate (211) is provided on one side of the outer cover (29), a longitudinal guide gap (212) is provided between the guide side plate (211) and the outer cover (29), and a connecting plate (213) connected to the adjusting nut (24) extends out of the guide gap (212) and is connected to the sliding seat (25); Folding edges (215) facing the outer cover (29) are provided on both sides of the guide side plate (211), and the folding edges (215) are slidably fitted in the sliding grooves (216) on the outer side surface of the connecting plate (213).

7. The lifting and measuring mechanism for a fatigue testing machine according to claim 6, characterized in that: A scale indicator needle (217) is arranged at one side edge of the connecting plate (213) facing the outer cover (29), and a scale line (218) matching the scale indicator needle (217) is arranged on the outer wall of the outer cover (29).

8. The lifting and measuring mechanism for a fatigue testing machine according to claim 1, characterized in that: The movable seat comprises a lifting slide rail (32) and a lifting slider (33) mounted on the lifting slide rail (32), and the diameter measuring instrument (31) is fixed on the lifting slider (33); A locking pin I (34) is provided on one side of the lifting slide block (33).

9. The lifting and measuring mechanism for a fatigue testing machine according to claim 8, characterized in that: The movable seat comprises a translation slide rail (35) and a translation slider (36) mounted on the translation slide rail (35), and the lifting slide rail (32) is mounted on the translation slider (36); A locking pin II (37) is provided on one side of the translation slide block (36).

10. The lifting and measuring mechanism for a fatigue testing machine according to claim 1, characterized in that: A top plate (11) is provided on the top of the support frame (1), and the lifting seat is fixed on the top plate (11); A layer plate (12) is arranged below the top plate (11), a convex plate (13) extending outward is arranged on one side of the layer plate (12), and the measuring component (3) is mounted on the layer plate (12) and is located on the side where the convex plate (13) is located.

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