Dynamic fatigue testing machine

Abstract

The utility model relates to the technical field of dynamic fatigue testing machines, and discloses a dynamic fatigue testing machine, which comprises a support unit, the support unit comprises a base, a support plate, a fixed column and a fixed block, and the upper surface of the base is fixedly connected with the support plate, the fixed column and the fixed block; the movable units are arranged on the upper surface of the base, the movable units comprise the first movable unit, the second movable unit and the third movable unit, the first movable unit is fixedly connected with the supporting plate, the second movable unit is fixedly connected with the fixing column, and the third movable unit is fixedly connected with the fixing block. Through the arrangement of a pressing plate, a first electric telescopic rod, a clamping plate, a second electric telescopic rod, a limiting block and other structures, when a workpiece is subjected to compression detection, the workpiece can be firmly clamped, the clamping stability and flexibility are improved, and after detection is finished, when the workpiece is taken out, the safety is good, the detection efficiency and accuracy are high, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamic fatigue testing machines, in particular to a dynamic fatigue testing machine. Background Art

[0002] A dynamic fatigue testing machine is a testing machine that enables a specimen or component to bear cyclic or randomly varying stresses or strains to measure fatigue limit and fatigue life and other indicators. It is mainly used to measure the fatigue performance of metals and their alloy materials under tensile, compressive or tensile-compressive alternating loads at room temperature. Since about 70% of the failures of mechanical parts are caused by fatigue, it is of practical significance to study the fatigue resistance of metal materials through experiments.

[0003] When the existing dynamic fatigue testing machine conducts compression testing on a workpiece, it often cannot adjust the position of the clamping device according to the shape and size of the workpiece, and thus cannot firmly clamp the workpiece, resulting in poor clamping stability and flexibility. Moreover, when taking out the workpiece after the detection, the safety is often poor, which is likely to cause injury to personnel. In addition, the existing dynamic fatigue testing machines often have low detection efficiency, low accuracy and low automation level. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Simplifications or omissions may be made in this part, as well as in the abstract and title of the application, to avoid obscuring the purpose of this part, the abstract and the title, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the problems that when the existing dynamic fatigue testing machine conducts compression testing on a workpiece, it often cannot firmly clamp the workpiece, resulting in poor clamping stability and flexibility, and when taking out the workpiece after the detection, the safety is often poor, which is likely to cause injury to personnel, and the existing dynamic fatigue testing machines often have low detection efficiency, low accuracy and low automation level, the utility model provides a dynamic fatigue testing machine. Through the arrangement of structures such as a pressing plate, a first electric telescopic rod, a clamping plate, a second electric telescopic rod and a limiting block, when conducting compression testing on a workpiece, the position of the clamping device can be adjusted according to the shape and size of the workpiece, and thus the workpiece can be firmly clamped, improving the clamping stability and flexibility. Moreover, when taking out the workpiece after the detection, the safety is good, the detection efficiency and accuracy are high, and the automation level is high.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: A dynamic fatigue testing machine includes: a support unit, including a base, a support plate, a fixed column, and a fixed block, wherein the upper surface of the base is fixedly connected to the support plate, the fixed column, and the fixed block; a moving unit, the moving unit is arranged on the upper surface of the base, the moving unit includes a first moving unit, a second moving unit, and a third moving unit, the first moving unit is fixedly connected to the support plate, the second moving unit is fixedly connected to the fixed column, and the third moving unit is fixedly connected to the fixed block.

[0007] As a preferred embodiment of the dynamic fatigue testing machine of the present utility model, wherein: the first moving unit includes a hydraulic cylinder, a piston rod, a lifting seat, a rotating shaft, and a pressing plate, the top of the support plate is fixedly installed with a hydraulic cylinder through bolts, the piston rod is arranged inside the hydraulic cylinder, the lower part of the piston rod is fixedly connected to the lifting seat, and the bottom of the lifting seat is movably connected to the pressing plate.

[0008] As a preferred embodiment of the dynamic fatigue testing machine of the present utility model, wherein: a rotating shaft is provided inside the lifting seat, and the pressing plate is rotatably connected to the lifting seat through the rotating shaft.

[0009] As a preferred embodiment of the dynamic fatigue testing machine of the present utility model, wherein: the second moving unit includes a first electric telescopic rod and a clamping plate, one end of the first electric telescopic rod is fixedly connected to the inner side of the fixed column, and the other end of the first electric telescopic rod is fixedly connected to the clamping plate.

[0010] As a preferred embodiment of the dynamic fatigue testing machine of the present utility model, wherein: the third moving unit includes a bottom plate, a second electric telescopic rod, and a limiting block, the bottom plate is fixedly connected to the second electric telescopic rod, and the second electric telescopic rod is fixedly connected to the fixed block.

[0011] As a preferred embodiment of the dynamic fatigue testing machine of the present utility model, wherein: the third moving unit further includes a sliding block and a sliding groove, the sliding block is fixedly connected to the bottom of the bottom plate and is slidably connected to the sliding groove, and the limiting block is fixed on the sliding groove.

[0012] As a preferred embodiment of the dynamic fatigue testing machine of the present utility model, wherein: the sliding grooves are symmetrically arranged on the top of the base, and the limiting blocks are symmetrically arranged on the sliding grooves.

[0013] Advantages of the present utility model: Through the arrangement of structures such as a pressing plate, a first electric telescopic rod, a clamping plate, a second electric telescopic rod, and a limiting block, when detecting the compression of a workpiece, the position of the clamping device can be adjusted according to the shape and size of the workpiece, so that the workpiece can be firmly clamped, improving the stability and flexibility of clamping. Moreover, after the detection is completed, when taking out the workpiece, the safety is good, the detection efficiency and accuracy are high, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0015] Figure 1 The front view of a dynamic fatigue testing machine provided by the present utility model;

[0016] Figure 2 The structural schematic diagram of the rotating shaft of a dynamic fatigue testing machine provided by the present utility model;

[0017] Figure 3 The structural schematic diagram of the first electric telescopic rod of a dynamic fatigue testing machine provided by the present utility model;

[0018] Figure 4 The structural schematic diagram of the second electric telescopic rod of a dynamic fatigue testing machine provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following will make a detailed description of the specific embodiments of the present utility model in conjunction with the drawings in the specification.

[0020] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0021] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an individual or selectively exclusive embodiment with other embodiments.

[0022] Embodiment 1

[0023] Refer to Figures 1-4 , which is the first embodiment of the present utility model. This embodiment provides a dynamic fatigue testing machine, which includes a support unit 100 and a movable unit 200.

[0024] Specifically, the support unit 100 includes a base 101, a support plate 102, a fixed column 103 and a fixed block 104. The upper surface of the base 101 is fixedly connected with the support plate 102, the fixed column 103 and the fixed block 104; the movable unit 200 is arranged on the upper surface of the base 101. The movable unit 200 includes a first movable unit 201, a second movable unit 202 and a third movable unit 203. The first movable unit 201 is fixedly connected with the support plate 102, the second movable unit 202 is fixedly connected with the fixed column 103, and the third movable unit 203 is fixedly connected with the fixed block 104.

[0025] Embodiment Two

[0026] Based on the previous embodiment, this embodiment provides a dynamic fatigue testing machine.

[0027] Specifically, the first movable unit 201 includes a hydraulic cylinder 201a, a piston rod 201b, a lifting seat 201c, a rotating shaft 201d and a pressing plate 201e. The hydraulic cylinder 201a is fixedly installed at the top of the support plate 102 through bolts. The piston rod 201b is arranged inside the hydraulic cylinder 201a. The lower part of the piston rod 201b is fixedly connected with the lifting seat 201c. The bottom of the lifting seat 201c is movably connected with the pressing plate 201e. A rotating shaft 201d is provided inside the lifting seat 201c. The pressing plate 201e is rotatably connected with the lifting seat 201c through the rotating shaft 201d. The second movable unit 202 includes a first electric telescopic rod 202a and a clamping plate 202b. One end of the first electric telescopic rod 202a is fixedly connected with the inner side of the fixed column 103, and the other end of the first electric telescopic rod 202a is fixedly connected with the clamping plate 202b. The third movable unit 203 includes a bottom plate 203a, a second electric telescopic rod 203b and a limiting block 203c. The bottom plate 203a is fixedly connected with the second electric telescopic rod 203b, and the second electric telescopic rod 203b is fixedly connected with the fixed block 104. The third movable unit 203 further includes a sliding block 203d and a sliding groove 203e. The sliding block 203d is fixedly connected with the bottom of the bottom plate 203a and is slidably connected with the sliding groove 203e. The limiting block 203c is fixed on the sliding groove 203e. The sliding grooves 203e are symmetrically arranged on the top of the base 101, and the limiting blocks 203c are symmetrically arranged on the sliding grooves 203e.

[0028] Among them, through the settings of structures such as the pressing plate 201e, the first electric telescopic rod 202a, the clamping plate 202b, the second electric telescopic rod 203b, and the limiting block 203c, when performing compression detection on the workpiece, the workpiece can be placed on the bottom plate 203a. The piston rod 201b inside the hydraulic cylinder 201a extends, driving the lifting seat 201c and the pressing plate 201e to move downward at the same time. And the position of the clamping plate 202b can be adjusted through the first electric telescopic rod 202a according to the shape and size of different workpieces. Thus, the position of the clamping device can be adjusted according to the shape and size of the workpiece, and then the workpiece can be firmly clamped, improving the clamping stability and the flexibility of the clamping device.

[0029] In this embodiment, when performing compression detection on the workpiece, first connect the first electric telescopic rod 202a and the second electric telescopic rod 203b to the power supply, and the first electric telescopic rod 202a and the second electric telescopic rod 203b can be controlled through the control switch. First, place the workpiece on the upper surface of the bottom plate 203a and between the two clamping plates 202b. At this time, the operator can start the first electric telescopic rod 202a through the control switch to control the movement of the two clamping plates 202b until the two clamping plates 202b firmly clamp the workpiece according to the shape and size of the workpiece. Therefore, when performing compression detection on the workpiece, the position of the clamping device can be adjusted according to the shape and size of the workpiece, and then the workpiece can be firmly clamped, improving the clamping stability and the flexibility of the clamping device, improving the detection efficiency, and having a high accuracy, solving the problem of low automation during workpiece compression detection.

[0030] It can be understood that when the hydraulic cylinder 201a is started, the piston rod 201b inside the hydraulic cylinder 201a extends, driving the lifting seat 201c to move downward, and at the same time driving the pressing plate 201e to move downward. And the operator can adjust the inclination angle and the pressing direction of the pressing plate 201e through the rotating shaft 201d inside the lifting seat 201c. Thus, the actual pressing situation of the pressing plate 201e can be adjusted according to the shape and size of the workpiece, etc., and the accuracy and safety during workpiece strength detection can be improved.

[0031] Specifically, after the workpiece compression detection is completed, the operator can control the second electric telescopic rod 203b to contract through the control switch. Since the sliding block 203d is fixedly connected to the bottom of the bottom plate 203a and is slidably connected to the sliding groove 203e, therefore, under the pulling force of the second electric telescopic rod 203b, the bottom plate 203a can slide in the sliding groove 203e in the direction of the fixed block 104 through the sliding block 203d installed at the bottom. Furthermore, after the workpiece completely leaves the compression detection device, the detected workpiece can be safely taken out.

[0032] It should be noted that a limit block 203c is fixedly installed on the sliding groove 203e. The limit block 203c can fix the position of the sliding block 203d on the sliding groove 203e to prevent the sliding block 203d from sliding randomly, thereby ensuring the safety and accuracy during compression detection and improving the stability of the workpiece compression detection device.

[0033] In practical applications, through the settings of structures such as the pressing plate 201e, the first electric telescopic rod 202a, the clamping plate 202b, the second electric telescopic rod 203b, and the limit block 203c, when performing compression detection on a workpiece, the position of the clamping device can be adjusted according to the shape and size of the workpiece, and then the workpiece can be firmly clamped, improving the stability and flexibility of clamping. Moreover, after the detection is completed, when taking out the workpiece, the safety is good, the detection efficiency and accuracy are high, and the degree of automation is high.

[0034] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0035] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dynamic fatigue testing machine, characterized in that, Comprising: A support unit (100), including a base (101), a support plate (102), a fixing column (103) and a fixing block (104), wherein the upper surface of the base (101) is fixedly connected to the support plate (102), the fixing column (103) and the fixing block (104); A movable unit (200), the movable unit (200) is arranged on the upper surface of the base (101), the movable unit (200) includes a first movable unit (201), a second movable unit (202) and a third movable unit (203), the first movable unit (201) is fixedly connected to the support plate (102), the second movable unit (202) is fixedly connected to the fixing column (103), and the third movable unit (203) is fixedly connected to the fixing block (104).

2. The dynamic fatigue testing machine according to claim 1, wherein, The first movable unit (201) includes a hydraulic cylinder (201a), a piston rod (201b), a lifting seat (201c), a rotating shaft (201d) and a pressing plate (201e), the top of the support plate (102) is fixedly installed with a hydraulic cylinder (201a) by bolts, the piston rod (201b) is arranged inside the hydraulic cylinder (201a), and the lower part of the piston rod (201b) is fixedly connected to the lifting seat (201c), and the bottom of the lifting seat (201c) is movably connected to the pressing plate (201e).

3. The dynamic fatigue testing machine according to claim 2, characterized in that, A rotating shaft (201d) is arranged inside the lifting seat (201c), and the pressing plate (201e) is rotationally connected to the lifting seat (201c) through the rotating shaft (201d).

4. A dynamic fatigue testing machine according to claim 1, wherein The second movable unit (202) includes a first electric telescopic rod (202a) and a clamping plate (202b), one end of the first electric telescopic rod (202a) is fixedly connected to the inside of the fixing column (103), and the other end of the first electric telescopic rod (202a) is fixedly connected to the clamping plate (202b).

5. The dynamic fatigue testing machine according to claim 1, characterized in that The third movable unit (203) includes a bottom plate (203a), a second electric telescopic rod (203b) and a limiting block (203c), the bottom plate (203a) is fixedly connected to the second electric telescopic rod (203b), and the second electric telescopic rod (203b) is fixedly connected to the fixing block (104).

6. The dynamic fatigue testing machine according to claim 5, characterized in that, The third movable unit (203) further includes a sliding block (203d) and a sliding groove (203e), the sliding block (203d) is fixedly connected to the bottom of the bottom plate (203a) and is slidably connected to the sliding groove (203e), and the limiting block (203c) is fixed on the sliding groove (203e).

7. The dynamic fatigue testing machine according to claim 6, characterized in that, The sliding grooves (203e) are symmetrically arranged on the top of the base (101), and the limiting blocks (203c) are symmetrically arranged on the sliding grooves (203e).

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