Electro-hydraulic servo dynamic and static fatigue testing machine

Abstract

The utility model relates to the technical field of electro-hydraulic servo dynamic and static fatigue tests, in particular to an electro-hydraulic servo dynamic and static fatigue testing machine which is provided with a limiting mechanism and a clamping mechanism, so that in the electro-hydraulic servo dynamic and static fatigue testing process, loose clamping caused by long-time vibration detection on materials can be prevented, and the detection accuracy is improved; comprising a test mechanism; the device further comprises two sets of fixing mechanisms, two sets of limiting mechanisms, two sets of clamping mechanisms and two sets of nuts, the two sets of fixing mechanisms are installed on the testing mechanism, each set of fixing mechanism conducts limiting installation on one set of limiting mechanism, each set of limiting mechanism is provided with one set of clamping mechanism, and each set of limiting mechanism is provided with one set of nuts.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electro -hydraulic servo dynamic static fatigue test, in particular to a kind of electro -hydraulic servo dynamic static fatigue testing machine. BACKGROUND

[0002] The electro-hydraulic servo dynamic static fatigue testing machine is a physical performance testing instrument used in the fields of mechanics, material science, water conservancy engineering, transportation engineering, etc.

[0003] In the existing electro-hydraulic servo dynamic static fatigue testing machine, for example, the servo hydraulic pump control system for static test of the dynamic static fatigue testing machine disclosed in the utility model patent with application No. 202021772076.3, the utility model is more stable, slower and more in line with the test requirements than the servo valve control system.

[0004] However, during the electro-hydraulic servo dynamic static fatigue test, long-time vibration of the clamping mechanism during clamping of the columnar material can cause loosening of the clamping mechanism, resulting in material sliding and reducing the test accuracy. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides an electro-hydraulic servo dynamic static fatigue testing machine by setting a limiting mechanism and a clamping mechanism, so that loosening of the clamping mechanism caused by long-time vibration detection of the material during the electro-hydraulic servo dynamic static fatigue test can be prevented, and the detection accuracy can be improved.

[0006] The utility model discloses an electro-hydraulic servo dynamic static fatigue testing machine, which comprises a testing mechanism, two sets of fixing mechanisms, two sets of limiting mechanisms, two sets of clamping mechanisms and two sets of nuts, the two sets of fixing mechanisms are installed on the testing mechanism, each fixing mechanism is provided with a limiting mechanism, each limiting mechanism is provided with a clamping mechanism, and each limiting mechanism is provided with a nut; the columnar material is clamped by operating the clamping mechanism, the clamping mechanism is limited by rotating the nut, the limiting mechanism is fixed by the fixing mechanism, and the material is detected by opening the testing mechanism; the vibration during detection is stabilized by the limiting mechanism, so that loosening of the clamping mechanism caused by long-time vibration detection of the material during the electro-hydraulic servo dynamic static fatigue test can be prevented, and the detection accuracy can be improved.

[0007] Preferably, the testing mechanism comprises a testing machine, three glass side plates and a glass seal door, the three glass side plates are installed on the testing machine, and the glass seal door is hinged to the front end of the testing machine; the material is taken out by the glass seal door, the glass side plates prevent the fragments generated when the material breaks, and the material is tested for dynamic static fatigue by opening the testing machine.

[0008] Preferably, the fixing mechanism comprises a base, a clamping block and four groups of screw rods, the base is installed on the testing machine, the clamping block is slidably arranged in the base, and the clamping block is fixed by screwing the four groups of screw rods with the base; the clamping block is fixed by screwing the screw rods with the base, so that the clamping block limits and fixes the limiting mechanism.

[0009] Preferably, the limiting mechanism comprises a sleeve and a square cone, the square cone is installed on the upper end of the sleeve, and the sleeve is arranged in the base through the square cone; the vibration during the detection process is stabilized through the square cone design of the square cone, and the material is limited through the sleeve.

[0010] Preferably, the clamping mechanism comprises four groups of clamping plates, a pressing cylinder and a rotating cylinder, the four groups of clamping plates are slidably installed in the sleeve, the pressing cylinder is sleeved outside the sleeve, the rotating cylinder is rotatably sleeved outside the sleeve, and the rotating cylinder is screwedly connected with the pressing cylinder; the pressing cylinder is moved by screwing the rotating cylinder with the pressing cylinder, and the clamping plates are slidably clamped to the material by the pressing cylinder moving and pressing the clamping plates.

[0011] Preferably, the nut is screwedly installed on the sleeve, and the screw threads of the nut and the rotating cylinder are opposite in screwing direction; the nut is extruded to the pressing cylinder during the detection process through the opposite screw threads of the nut, so that the displacement of the pressing cylinder and the rotating cylinder caused by vibration is reduced.

[0012] Compared with the prior art, the beneficial effects of the utility model are that: the columnar material is clamped by operating the clamping mechanism, the clamping mechanism is limited by rotating the nut, the limiting mechanism is fixed by the fixing mechanism, the material is detected by opening the testing mechanism, and the vibration during the detection process is stabilized by the limiting mechanism, so that the clamping loosening caused by long-time vibration detection of the material in the electro-hydraulic servo dynamic and static fatigue test process is prevented, and the detection accuracy is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the isometric structure schematic diagram of the utility model;

[0014] Figure 2 is the isometric structure schematic diagram of the utility model;

[0015] Figure 3 is the isometric structure schematic diagram of the utility model;

[0016] Figure 4 is the isometric structure schematic diagram of the utility model;

[0017] The following are labels in the attached diagram: 1. Test mechanism; 11. Test machine; 12. Glass side plate; 13. Glass sealing door; 2. Fixing mechanism; 21. Base; 22. Clamping block; 23. Screw; 3. Limiting mechanism; 31. Sleeve; 32. Square cone; 4. Clamping mechanism; 41. Clamping plate; 42. Pressure cylinder; 43. Rotating cylinder; 5. Nut. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0019] Example 1

[0020] like Figures 1 to 4 As shown, an electro-hydraulic servo dynamic and static fatigue testing machine includes a testing mechanism 1, two sets of fixing mechanisms 2, two sets of limiting mechanisms 3, two sets of clamping mechanisms 4, and two sets of nuts 5. The two sets of fixing mechanisms 2 are installed on the testing mechanism 1. Each set of fixing mechanisms 2 has a limiting mechanism 3 installed on it. Each set of limiting mechanisms 3 has a clamping mechanism 4 installed on it. Each set of limiting mechanisms 3 has a set of nuts 5 installed on it.

[0021] The testing mechanism 1 includes a testing machine 11, three sets of glass side panels 12 and a glass sealing door 13. The three sets of glass side panels 12 are installed on the testing machine 11, and the glass sealing door 13 is hinged to the front end of the testing machine 11.

[0022] The fixing mechanism 2 includes a base 21, a locking block 22 and four sets of screws 23. The base 21 is installed on the testing machine 11, the locking block 22 is slidably placed in the base 21, and the locking block 22 is fixed by the four sets of screws 23 engaging with the base 21 through threaded engagement.

[0023] The limiting mechanism 3 includes a sleeve 31 and a square cone 32. The square cone 32 is installed on the upper end of the sleeve 31, and the sleeve 31 is placed in the base 21 through the square cone 32.

[0024] The clamping mechanism 4 includes four sets of clamping plates 41, a pressure cylinder 42 and a rotating cylinder 43. The four sets of clamping plates 41 are slidably installed inside the sleeve 31, the pressure cylinder 42 is fitted outside the sleeve 31, and the rotating cylinder 43 is rotatably fitted outside the sleeve 31. The rotating cylinder 43 and the pressure cylinder 42 are threaded together.

[0025] Nut 5 is threaded onto sleeve 31, and the threads of nut 5 rotate in the opposite direction to the threads of rotating drum 43;

[0026] The rotating rotating drum 43 is screwed with the pressing drum 42 to move the pressing drum 42, and the pressing drum 42 is pressed against the clamping plate 41 to slide the clamping plate 41 to clamp the material, the reverse thread of the nut 5 is used to extrude the pressing drum 42 during the detection process, so that the displacement of the pressing drum 42 and the rotating drum 43 caused by vibration is reduced, the fixing mechanism 2 comprises a base 21, a clamping block 22 and four groups of screw rods 23, the base 21 is installed on the testing machine 11, the clamping block 22 is slidably arranged in the base 21, and the clamping block 22 is fixed through the screw thread cooperation of the four groups of screw rods 23 and the base 21, the material is taken and placed through the glass sealing door 13, the glass side plate 12 is used to prevent the fragments generated when the material is broken, the material is subjected to dynamic and static fatigue test by opening the testing machine 11, and the vibration during the detection process is stabilized through the square taper design of the square taper 32, and the material is limited through the sleeve 31.

[0027] As shown in Figures 1 to 4 The utility model discloses a kind of electro-hydraulic servo dynamic and static fatigue testing machines, when working, rotating drum 43 is screwed with the pressing drum 42 to move the pressing drum 42, and the pressing drum 42 is pressed against the clamping plate 41 to slide the clamping plate 41 to clamp the material, the reverse thread of the nut 5 is used to extrude the pressing drum 42 during the detection process, so that the displacement of the pressing drum 42 and the rotating drum 43 caused by vibration is reduced, the fixing mechanism 2 comprises a base 21, a clamping block 22 and four groups of screw rods 23, the base 21 is installed on the testing machine 11, the clamping block 22 is slidably arranged in the base 21, and the clamping block 22 is fixed through the screw thread cooperation of the four groups of screw rods 23 and the base 21, the material is taken and placed through the glass sealing door 13, the glass side plate 12 is used to prevent the fragments generated when the material is broken, the material is subjected to dynamic and static fatigue test by opening the testing machine 11, and the vibration during the detection process is stabilized through the square taper design of the square taper 32, and the material is limited through the sleeve 31.

[0028] The testing machine 11 of the utility model is purchased on market, and the technical personnel in the industry only needs to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0029] The utility model discloses a kind of electro-hydraulic servo dynamic and static fatigue testing machines, when working, rotating drum 43 is screwed with the pressing drum 42 to move the pressing drum 42, and the pressing drum 42 is pressed against the clamping plate 41 to slide the clamping plate 41 to clamp the material, the reverse thread of the nut 5 is used to extrude the pressing drum 42 during the detection process, so that the displacement of the pressing drum 42 and the rotating drum 43 caused by vibration is reduced, the fixing mechanism 2 comprises a base 21, a clamping block 22 and four groups of screw rods 23, the base 21 is installed on the testing machine 11, the clamping block 22 is slidably arranged in the base 21, and the clamping block 22 is fixed through the screw thread cooperation of the four groups of screw rods 23 and the base 21, the material is taken and placed through the glass sealing door 13, the glass side plate 12 is used to prevent the fragments generated when the material is broken, the material is subjected to dynamic and static fatigue test by opening the testing machine 11, and the vibration during the detection process is stabilized through the square taper design of the square taper 32, and the material is limited through the sleeve 31.

[0030] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. An electro-hydraulic servo dynamic static fatigue testing machine comprising a testing mechanism (1); characterized in that, Two sets of fixing mechanisms (2), two sets of limiting mechanisms (3), two sets of clamping mechanisms (4) and two sets of nuts (5) are further included, the two sets of fixing mechanisms (2) are installed on the testing mechanism (1), one set of limiting mechanisms (3) is installed on each of the two sets of fixing mechanisms (2), one set of clamping mechanisms (4) is installed on each of the two sets of limiting mechanisms (3), and one set of nuts (5) is installed on each of the two sets of limiting mechanisms (3).

2. The electro-hydraulic servo dynamic static fatigue testing machine according to claim 1, characterized in that, The testing mechanism (1) comprises a testing machine (11), three sets of glass side plates (12) and a glass sealing door (13), the three sets of glass side plates (12) are installed on the testing machine (11), and the glass sealing door (13) is hinged to the front end of the testing machine (11).

3. The electro-hydraulic servo dynamic static fatigue testing machine according to claim 2, characterized in that, The fixing mechanism (2) comprises a base (21), a clamping block (22) and four sets of screw rods (23), the base (21) is installed on the testing machine (11), the clamping block (22) is slidably placed in the base (21), and the clamping block (22) is fixed by screwing the four sets of screw rods (23) with the base (21).

4. The electro-hydraulic servo dynamic static fatigue testing machine according to claim 3, characterized in that, The limiting mechanism (3) comprises a sleeve (31) and a square taper (32), the square taper (32) is installed on the upper end of the sleeve (31), and the sleeve (31) is placed in the base (21) through the square taper (32).

5. The electro-hydraulic servo dynamic static fatigue testing machine according to claim 4, characterized in that, The clamping mechanism (4) comprises four sets of clamping plates (41), a pressing cylinder (42) and a rotating cylinder (43), the four sets of clamping plates (41) are slidably installed in the sleeve (31), the pressing cylinder (42) is sleeved outside the sleeve (31), the rotating cylinder (43) is rotatably sleeved outside the sleeve (31), and the rotating cylinder (43) is screwedly connected with the pressing cylinder (42).

6. An electro-hydraulic servo dynamic static fatigue testing machine as claimed in claim 5, wherein, The nut (5) is screwedly installed on the sleeve (31), and the screw thread of the nut (5) is opposite to the screw thread rotation direction of the rotating cylinder (43).

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