Stress test device based on hydraulic loading

Abstract

The utility model belongs to the technical field of stress test, and particularly relates to a stress test device based on hydraulic loading, which comprises a base, a hydraulic cylinder is arranged above the base, a pressing rod of the hydraulic cylinder moves in the vertical direction, and a pressure sensor is arranged at the bottom end of the pressing rod; a fixing frame is arranged at the top of the base, a first sliding block sliding in the front-back direction is arranged on the fixing frame in an embedded mode, and a first driving assembly for driving the first sliding block to move is arranged on the fixing frame. According to the utility model, when the limit stress of different positions of the to-be-detected piece needs to be detected, the pressure sensor is firstly lifted and reset, and then the first servo motor is started and stopped to drive the first screw rod to rotate, so that the first sliding block drives the fixed to-be-detected piece to move back and forth, and the second servo motor is started and stopped to drive the second screw rod to rotate; the second sliding block drives the fixed to-be-detected piece to move in the left-right direction, the relative position of the to-be-detected piece and the pressure sensor can be changed, and therefore the limit stress of the to-be-detected piece at different positions can be conveniently detected.

Description

Technical Field

[0001] The utility model relates to the technical field of stress testing, in particular to a stress testing device based on hydraulic loading. Background Technique

[0002] When an object deforms due to external factors (such as force, humidity, temperature field change, etc.), internal forces that interact with each other are generated among various parts of the object. The internal force per unit area is called stress. The stress perpendicular to the cross-section is called normal stress or normal stress, and the stress tangent to the cross-section is called shear stress or shear stress.

[0003] Before some spare parts leave the factory, the ultimate stress they can withstand will be sampled and tested. When the traditional stress testing device is testing, after the part to be tested is fixed, it cannot be adjusted or the adjustment is not flexible enough, so it is more inconvenient to test the ultimate stress at different positions of it. Therefore, it is necessary to develop a stress testing device based on hydraulic loading. Content 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, but such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] To solve the above technical problems, according to one aspect of the utility model, the following technical solutions are provided:

[0006] A stress testing device based on hydraulic loading, which includes:

[0007] A base, above which a hydraulic cylinder is arranged. The pressing rod of the hydraulic cylinder has a vertical displacement, and a pressure sensor is arranged at the bottom end.

[0008] A fixing frame, which is arranged on the top of the base. A first slider that slides in the front-rear direction is embedded in the fixing frame, and a first driving component for driving the displacement of the first slider is arranged on the fixing frame.

[0009] A movable frame, which is arranged on the top of the first slider. A second slider that slides in the left-right direction is embedded in the movable frame, and a second driving component for driving the displacement of the second slider is arranged on the movable frame.

[0010] A placement frame, which is arranged on the top of the second slider. Two groups of clamping plates that move towards each other are embedded in the placement frame. A clamping plate for clamping the part to be tested is arranged on the top of the two groups of clamping plates. A third driving component for driving the two clamping plates to move towards each other is arranged on the placement frame.

[0011] As a preferred solution of a stress test device based on hydraulic loading according to the present utility model, wherein: an installation frame is provided on the top of the base, an installation table is provided on the front side of the installation frame, the hydraulic cylinder is fixed on the top of the installation table, and the pressing rod of the hydraulic cylinder slidably penetrates through the bottom of the installation table.

[0012] As a preferred solution of a stress test device based on hydraulic loading according to the present utility model, wherein: a control console is provided on the top of the base, and a plurality of buttons and a display screen are provided on the control console.

[0013] As a preferred solution of a stress test device based on hydraulic loading according to the present utility model, wherein: there are three first sliders in total, and a first sliding groove for the first sliders to slide in the front-back direction is provided on the top of the fixed frame, and the upper surface of the first slider protrudes from the upper surface of the fixed frame and is fixed to the bottom of the movable frame;

[0014] The first driving component includes a first lead screw rotatably arranged in the middle first sliding groove and first guide rods fixed in the first sliding grooves on both sides. The rod body of the first lead screw is threadedly penetrated through the front and rear side walls of the middle first slider, and the rod body of the first guide rod slidably penetrates through the front and rear side walls of the first sliders on both sides; a first servo motor is embedded in the fixed frame, and the output shaft of the first servo motor is connected to the end of the first lead screw through a coupling.

[0015] As a preferred solution of a stress test device based on hydraulic loading according to the present utility model, wherein: there are three second sliders in total, and a second sliding groove for the second sliders to slide in the left-right direction is provided on the top of the movable frame, and the upper surface of the second slider protrudes from the upper surface of the movable frame and is fixed to the bottom of the placement frame;

[0016] The second driving component includes a second lead screw rotatably arranged in the middle second sliding groove and second guide rods fixed in the second sliding grooves on both sides. The rod body of the second lead screw is threadedly penetrated through the left and right side walls of the middle second slider, and the rod body of the second guide rod slidably penetrates through the left and right side walls of the second sliders on both sides; a second servo motor is embedded in the movable frame, and the output shaft of the second servo motor is connected to the end of the second lead screw through a coupling.

[0017] As a preferred solution of a stress test device based on hydraulic loading according to the present utility model, wherein: a set of movable blocks is provided at the bottom of each clamping plate, and there are three movable blocks in each set. A third sliding groove for the two sets of movable blocks to move towards each other is provided on the top of the placement frame. The upper surface of the movable block protrudes from the upper surface of the placement frame and is fixed to the bottom of the clamping plate. Anti-slip pads are provided on one side where the two clamping plates face each other;

[0018] The third driving component includes a left - right double - threaded screw rod rotatably arranged in the middle third sliding groove, and third guiding rods fixed on the third sliding grooves on both sides. The thread directions on the left and right rod bodies of the left - right double - threaded screw rod are opposite, and the left and right side rod bodies of the left - right double - threaded screw rod are respectively screwed through the left and right side walls of the middle movable blocks among two groups of movable blocks. The rod bodies of the third guiding rods slidably penetrate through the left and right side walls of the remaining movable blocks; one end of the left - right double - threaded screw rod extends and rotatably penetrates through the side wall of the placement rack and is provided with a knob.

[0019] The beneficial effects of the present utility model are as follows: When it is necessary to detect the ultimate stress at different positions of the test piece to be measured, first raise and reset the pressure sensor, and then drive the first screw rod to rotate by opening and closing the first servo - motor, so that the first slider drives the fixed test piece to move in the front - back direction. By opening and closing the second servo - motor to drive the second screw rod to rotate, the second slider drives the fixed test piece to move in the left - right direction, that is, the relative position between the test piece to be measured and the pressure sensor can be changed, thereby facilitating the detection of the ultimate stress at different positions of the test piece to be measured. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. Among them:

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the fixing frame and its installation components of the present utility model;

[0023] Figure 3 is a structural schematic diagram of the movable frame and its installation components of the present utility model;

[0024] Figure 4 is a structural schematic diagram of the movable block and the clamping plate of the present utility model.

[0025] In the figure: base 100, hydraulic cylinder 110, pressure rod 120, pressure sensor 130, mounting bracket 140, mounting table 150, control console 160, fixing bracket 200, first slider 210, first chute 220, first lead screw 230, first guide rod 240, first servo motor 250, movable bracket 300, second slider 310, second chute 320, second lead screw 330, second guide rod 340, second servo motor 350, placement rack 400, movable block 410, clamping plate 420, anti-slip pad 430, third chute 440, double-headed positive and negative lead screw 450, third guide rod 460, knob 470. Detailed implementation manners

[0026] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings.

[0027] 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 implementation manners disclosed below.

[0028] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the implementation manners of the present utility model, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0029] In order to make the purpose, technical solutions, and advantages of the present utility model clearer, the following will further describe in detail the implementation manners of the present utility model with reference to the accompanying drawings.

[0030] Please refer to Figures 1-4 , which shows a schematic structural diagram of an implementation manner of a stress test device based on hydraulic loading of the present utility model. Please refer to Figures 1-4 , and a detailed introduction will be made to a stress test device based on hydraulic loading.

[0031] A stress test device based on hydraulic loading, including a base 100, above which a hydraulic cylinder 110 is provided. The pressure rod 120 of the hydraulic cylinder 110 is vertically displaced and a pressure sensor 130 is provided at its bottom end; on the top of the base 100, a mounting frame 140 is provided. On the front side of the mounting frame 140, a mounting table 150 is provided. The hydraulic cylinder 110 is fixed on the top of the mounting table 150, and the pressure rod 120 of the hydraulic cylinder 110 slides through the bottom of the mounting table 150; on the top of the base 100, a control console 160 is provided. On the control console 160, a plurality of buttons and a display screen are provided. Different buttons are electrically connected to different powered devices, such as being electrically connected to a first servo motor 250 and a second servo motor 350. And, the pressure sensor 130 is also electrically connected to the display. When the pressure sensor 130 is under pressure, it will be reflected on the display, facilitating the user to view;

[0032] Please refer to again Figure 1 and Figure 2 , on the top of the base 100, a fixing frame 200 is provided. Embedded in the fixing frame 200 is a first slider 210 that slides in the front-rear direction. On the fixing frame 200, a first driving component for driving the displacement of the first slider 210 is provided;

[0033] There are three first sliders 210 in total. On the top of the fixing frame 200, a first sliding groove 220 for the first slider 210 to slide in the front-rear direction is provided. The upper surface of the first slider 210 protrudes from the upper surface of the fixing frame 200 and is fixed to the bottom of the movable frame 300;

[0034] The first driving component includes a first lead screw 230 rotatably arranged in the middle first sliding groove 220 and first guide rods 240 fixed to the first sliding grooves 220 on both sides. The rod body of the first lead screw 230 is screwed through the front and rear side walls of the middle first slider 210, and the rod bodies of the first guide rods 240 slide through the front and rear side walls of the first sliders 210 on both sides; Embedded in the fixing frame 200 is a first servo motor 250, and the output shaft of the first servo motor 250 is connected to the end of the first lead screw 230 through a coupling;

[0035] Please refer to again Figure 1 and Figure 3 , on the top of the first slider 210, a movable frame 300 is provided. Embedded in the movable frame 300 is a second slider 310 that slides in the left-right direction. On the movable frame 300, a second driving component for driving the displacement of the second slider 310 is provided;

[0036] There are three second sliders 310 in total. A second chute 320 for the second slider 310 to slide in the left - right direction is formed at the top of the movable frame 300. The upper surface of the second slider 310 protrudes from the upper surface of the movable frame 300 and is fixed to the bottom of the placement frame 400.

[0037] The second driving assembly includes a second lead screw 330 rotatably arranged in the middle second chute 320 and second guide rods 340 fixed to the second chutes 320 on both sides. The rod body of the second lead screw 330 is threadedly connected through the left - right side walls of the middle second slider 310, and the rod bodies of the second guide rods 340 slide through the left - right side walls of the second sliders 310 on both sides. A second servo motor 350 is embedded in the movable frame 300, and the output shaft of the second servo motor 350 is connected to the end of the second lead screw 330 through a coupling.

[0038] Please refer to again Figure 1 and Figure 4 As shown in, a placement frame 400 is provided at the top of the second slider 310. Two sets of clamping plates 420 moving towards each other are embedded in the placement frame 400. Clamping plates 420 for clamping the workpiece to be measured are provided at the top of the two sets of clamping plates 420. A third driving assembly for driving the two clamping plates 420 to move towards each other is provided on the placement frame 400.

[0039] A set of movable blocks 410 is provided at the bottom of each clamping plate 420. There are three movable blocks 410 in each set. A third chute 440 for the two sets of movable blocks 410 to move towards each other is formed at the top of the placement frame 400. The upper surface of the movable block 410 protrudes from the upper surface of the placement frame 400 and is fixed to the bottom of the clamping plate 420. Anti - slip pads 430 are provided on the side where the two clamping plates 420 face each other.

[0040] The third driving assembly includes a left - right double - threaded lead screw 450 rotatably arranged in the middle third chute 440 and third guide rods 460 fixed to the third chutes 440 on both sides. The thread directions on the left and right rod bodies of the left - right double - threaded lead screw 450 are opposite, and the left and right rod bodies of the left - right double - threaded lead screw 450 are respectively threadedly connected through the left - right side walls of the middle movable blocks 410 in the two sets of movable blocks 410. The rod bodies of the third guide rods 460 slide through the left - right side walls of the remaining movable blocks 410. One end of the left - right double - threaded lead screw 450 extends and rotates through the side wall of the placement frame 400 and is provided with a knob 470. By setting the knob 470, it is convenient to turn the left - right double - threaded lead screw 450.

[0041] In the specific use process, place the component to be tested on the top of the placement rack 400, drive the forward and reverse double-headed lead screw 450 to rotate through the knob 470, adjust the distance between the two clamping plates 420, so as to clamp both sides of the component to be tested, start the hydraulic cylinder 110 to drive the pressure rod 120 to descend, and press the component to be tested through the pressure sensor 130 to detect its ultimate stress;

[0042] When it is necessary to detect the ultimate stress at different positions of the component to be tested, first raise and reset the pressure sensor 130, and then drive the first lead screw 230 to rotate by opening and closing the first servo motor 250, so that the first slider 210 drives the fixed component to be tested to move in the front-back direction, and drive the second lead screw 330 to rotate by opening and closing the second servo motor 350, so that the second slider 310 drives the fixed component to be tested to move in the left-right direction, that is, the relative position between the component to be tested and the pressure sensor 130 can be changed, so as to facilitate the detection of the ultimate stress at different positions of the component to be tested.

[0043] Although the present invention has been described above with reference to the embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A stress test device based on hydraulic loading, characterized in that, Including: A base (100), above which a hydraulic cylinder (110) is provided. The pressing rod (120) of the hydraulic cylinder (110) is displaced in the vertical direction and a pressure sensor (130) is provided at the bottom end. A fixing frame (200), which is provided on the top of the base (100). An inner-embedded first slider (210) that slides in the front-back direction is provided on the fixing frame (200), and a first driving assembly for driving the displacement of the first slider (210) is provided on the fixing frame (200). A movable frame (300), which is provided on the top of the first slider (210). An inner-embedded second slider (310) that slides in the left-right direction is provided on the movable frame (300), and a second driving assembly for driving the displacement of the second slider (310) is provided on the movable frame (300). A placement rack (400), which is provided on the top of the second slider (310). Two groups of clamping plates (420) that move towards each other are inner-embedded on the placement rack (400). The top of the two groups of clamping plates (420) is provided with clamping plates (420) for clamping the test piece, and a third driving assembly for driving the two clamping plates (420) to move towards each other is provided on the placement rack (400).

2. The stress test device based on hydraulic loading according to claim 1, characterized in that: An installation rack (140) is provided on the top of the base (100). An installation table (150) is provided on the front side of the installation rack (140). The hydraulic cylinder (110) is fixed on the top of the installation table (150), and the pressing rod (120) of the hydraulic cylinder (110) slides through the bottom of the installation table (150).

3. The stress test device based on hydraulic loading according to claim 1, characterized in that: A control console (160) is provided on the top of the base (100). Multiple buttons and a display screen are provided on the control console (160).

4. A stress test device based on hydraulic loading according to claim 1, characterized in that: There are three first sliders (210) in total. A first chute (220) for the first slider (210) to slide in the front-back direction is opened on the top of the fixing frame (200). The upper surface of the first slider (210) protrudes from the upper surface of the fixing frame (200) and is fixed to the bottom of the movable frame (300). The first driving assembly includes a first lead screw (230) rotatably arranged in the middle first chute (220) and first guide rods (240) fixed on the first chutes (220) on both sides. The rod body of the first lead screw (230) is screwed through the front and rear side walls of the middle first slider (210), and the rod bodies of the first guide rods (240) slide through the front and rear side walls of the first sliders (210) on both sides. A first servo motor (250) is inner-embedded on the fixing frame (200), and the output shaft of the first servo motor (250) is connected to the end of the first lead screw (230) through a coupling.

5. The stress test device based on hydraulic loading according to claim 1, characterized in that: There are three second sliders (310) in total. A second chute (320) for the second slider (310) to slide in the left-right direction is opened on the top of the movable frame (300). The upper surface of the second slider (310) protrudes from the upper surface of the movable frame (300) and is fixed to the bottom of the placement rack (400). The second driving component includes a second lead screw (330) rotatably arranged in the middle second chute (320) and second guide rods (340) fixed to the second chutes (320) on both sides. The rod body of the second lead screw (330) is threadedly connected through the left and right side walls of the middle second slider (310), and the rod bodies of the second guide rods (340) are slidably connected through the left and right side walls of the second sliders (310) on both sides. An embedded second servo motor (350) is arranged on the movable frame (300), and the output shaft of the second servo motor (350) is connected to the end of the second lead screw (330) through a coupling.

6. The stress test device based on hydraulic loading according to claim 1, characterized in that: A set of movable blocks (410) is arranged at the bottom of each clamping plate (420). Each set of the movable blocks (410) has three, and a third chute (440) for the two sets of movable blocks (410) to move towards each other is formed at the top of the placement rack (400). The upper surface of the movable block (410) protrudes from the upper surface of the placement rack (400) and is fixed to the bottom of the clamping plate (420). Anti-slip pads (430) are arranged on one side where the two clamping plates (420) face each other. The third driving component includes a reverse and forward double-headed lead screw (450) rotatably arranged in the middle third chute (440) and third guide rods (460) fixed to the third chutes (440) on both sides. The thread directions on the left and right rod bodies of the reverse and forward double-headed lead screw (450) are opposite, and the left and right rod bodies of the reverse and forward double-headed lead screw (450) are respectively threadedly connected through the left and right side walls of the middle movable blocks (410) in the two sets of movable blocks (410). The rod bodies of the third guide rods (460) are slidably connected through the left and right side walls of the remaining movable blocks (410). One end of the reverse and forward double-headed lead screw (450) extends and rotatably penetrates the side wall of the placement rack (400) and is provided with a knob (470).

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