CN216208175U

CN216208175U - Tensile test experiment platform

Info

Publication number: CN216208175U
Application number: CN202120872321.6U
Authority: CN
Inventors: 马金茹
Original assignee: Beijing Polytechnic
Current assignee: Beijing Polytechnic
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2022-04-05
Anticipated expiration: 2031-04-26

Abstract

The utility model discloses a tensile test experiment platform, which comprises: the device comprises a test bench, a controller, a tension display, a displacement display, a hydraulic lifting device, an upper connecting piece, a connecting bench, a sensor seat, a displacement sensor, a test piece, a lower connecting piece and a hydraulic system; the hydraulic lifting devices are arranged on two sides of the experiment table; the hydraulic lifting device consists of a hydraulic cylinder and a hydraulic rod; the connecting platform is arranged above the hydraulic rod; the upper connecting piece is arranged in the middle of the connecting table; the sensor is arranged in front of the connecting table; the displacement sensor is positioned on the sensor seat; the lower connecting piece is positioned in the middle of the experiment table; the test piece is fixed between the upper connecting piece and the lower connecting piece; the hydraulic system is positioned in front of the experiment table; the hydraulic system consists of an oil tank, a hydraulic controller, a hydraulic power device and a hydraulic pipeline. The utility model has the characteristics of reasonable design, simple structure, convenient operation and the like, and adopts a hydraulic system to stretch the test piece.

Description

Tensile test experiment platform

Technical Field

The utility model relates to the field of metal rod piece stretching experiments, in particular to a tensile force test experiment platform.

Background

The metal material tensile test is one of the most common tests for testing the tensile force of the mechanical property of the material, and at present, the tensile test is generally realized by respectively placing and fixing two ends of a test piece in clamps and then stretching the test piece through external force. During testing, the test piece needs to be fixed in the clamp, the test piece is fixed through the pin, or the two ends of the test piece are thinned and deeply fixed in the clamp, and the two methods can generate stress mutation during tensile test, so that the test piece is damaged, and the test failure is caused.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the utility model aims to provide a tensile test experiment platform which has the characteristics of reasonable design, simple structure, convenience in operation and the like.

In order to solve the technical problems, the utility model provides the following technical scheme: a tensile testing experiment platform, comprising: the device comprises a test bench, a controller, a tension display, a displacement display, a hydraulic lifting device, an upper connecting piece, a rotating rod, an upper connecting rod, a connecting bench, a sensor seat, a displacement sensor, a test piece, a lower connecting piece, a top sleeve, a top rod, a rotating rod, a hydraulic system, an oil tank, a hydraulic controller, a hydraulic power device and a hydraulic pipeline; the hydraulic lifting devices are positioned on the left side and the right side of the experiment table; the hydraulic lifting device consists of a hydraulic cylinder and a hydraulic rod; the connecting table is positioned above the left hydraulic rod and the right hydraulic rod; the upper connecting piece is positioned in the middle of the connecting table; the upper connecting piece consists of a rotating rod, an upper connecting rod, a top sleeve, a top rod and a rotating rod; the upper connecting rod is connected with the connecting table through threads; the sensor seat is positioned in front of the connecting table; the displacement sensor is positioned on the sensor seat; the lower connecting piece is positioned in the middle of the experiment table; the test piece is fixed between the upper connecting piece and the lower connecting piece; the hydraulic system is positioned in front of the experiment table; the hydraulic system mainly comprises an oil tank, a hydraulic controller, a hydraulic power device and a hydraulic pipeline; the oil tank is positioned at the front right of the experiment table; the hydraulic power device and the hydraulic controller are positioned above the oil tank; the hydraulic pipeline is connected with the oil tank, the hydraulic controller and the hydraulic cylinder.

Furthermore, the middle part of the upper connecting rod is provided with threads, the total length of the upper connecting rod is 280mm, and the length of the threads is 200 mm.

Furthermore, the upper connecting piece and the lower connecting piece are respectively provided with three groups of top sleeves, top rods and rotary rods.

Further, the length of the test piece is 200mm, and the diameter of the test piece is 10 mm.

Further, the length of the rotating rod is 120mm, and the diameter of the rotating rod is 16 mm.

Further, the length of laboratory bench is 850mm, and the width is 600mm, and the height is 200 mm.

In conclusion, the utility model has the following beneficial effects:

1. through setting up hydraulic lifting device, can realize through the tensile test of hydraulic pressure force to the test piece, hydraulic system possesses the characteristic that stability is good, easy operation.

2. Through setting up connecting piece and lower connecting piece, can be fixed test piece both ends, respectively set up three top covers of group, ejector pin, swing arm in last connecting piece and the lower connecting piece, drive the ejector pin through rotating the swing arm, realize that the top cover compresses tightly the test piece to the realization is fixed to the test piece.

3. Through setting up bull stick and upper junction pole, upper junction pole middle part sets up the screw thread, rotates the bull stick and makes the upper junction pole remove in the connecting piece, when fixed test piece, to placing the test piece in the lower connecting piece fixed test piece lower extreme, then rotates the bull stick, adjusts the upper and lower position of upper junction pole, adjusts the upper junction piece on the upper junction pole and is in the test piece upper end, fixes the test piece.

4. The tension sensor is arranged to monitor the change of the tensile length of the test piece, and the tension display and the displacement display are arranged to facilitate observation of the change and data recording of the tensile test piece during the tensile test.

5. The controller can realize the control of the hydraulic system and the control of the tension, and can ensure the safe test.

6. The test piece is designed to be thick at two ends, so that the test piece can be prevented from being damaged in the experiment due to stress concentration, and the test can be ensured to be carried out smoothly.

Drawings

FIG. 1 is a schematic structural diagram of a tensile test experiment platform according to the present invention;

FIG. 2 is a schematic view of a lower connecting piece of a tensile test experiment platform according to the present invention;

FIG. 3 is a schematic view of a structure of a connecting member on a tensile test experiment platform according to the present invention;

FIG. 4 is a schematic structural diagram of a top sleeve, a top rod and a rotary rod of an upper connecting piece and a lower connecting piece in the tensile test experiment platform;

FIG. 5 is a schematic diagram of a test piece structure in the tensile test experiment platform according to the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a laboratory bench; 10. a controller; 11. a tension display; 12. a displacement display; 2. a hydraulic lifting device; 20. a hydraulic cylinder; 21. a hydraulic lever; 3. an upper connecting piece; 30. fixing the clamp; 31. a rotating rod; 32. an upper connecting rod; 4. a connecting table; 40. a sensor seat; 5. a displacement sensor; 6. a test piece; 7. A lower connecting piece; 70. jacking and sleeving; 71. a top rod; 72. rotating the rod; 8. a hydraulic system; 80. an oil tank; 81. a hydraulic controller; 82. a hydraulic power unit; 83. a hydraulic circuit.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 5, the experimental platform for tensile testing of this embodiment includes: the device comprises an experiment table 1, a controller 10, a tension display 11, a displacement display 12, a hydraulic lifting device 2, a hydraulic cylinder 20, a hydraulic rod 21, an upper connecting piece 3, a fixed clamping piece 30, a rotating rod 31, an upper connecting rod 32, a connecting table 4, a sensor seat 40, a displacement sensor 5, a test piece 6, a lower connecting piece 7, a top sleeve 70, a top rod 71, a rotating rod 72, a hydraulic system 8, an oil tank 80, a hydraulic controller 81, a hydraulic power device 82 and a hydraulic pipeline 83; the hydraulic lifting devices 2 are positioned at the left side and the right side of the experiment table 1; the hydraulic lifting device 2 consists of a hydraulic cylinder 20 and a hydraulic rod 21; the connecting table 4 is positioned above the left hydraulic rod 21 and the right hydraulic rod 21; the upper connecting piece 3 is positioned in the middle of the connecting table 4; the upper connecting piece 3 consists of a fixed clamping piece 30, a rotating rod 31, an upper connecting rod 32, a top sleeve 70, a top rod 71 and a rotating rod 72; the upper connecting rod 32 is connected with the connecting table 4 through threads; the sensor base 40 is positioned in front of the connecting table 4; the displacement sensor 5 is positioned on the sensor seat 40; the lower connecting piece 7 is positioned in the middle of the experiment table 1; the test piece 6 is fixed between the upper connecting piece 3 and the lower connecting piece part 7; the hydraulic system 8 is positioned in front of the experiment table 1; the hydraulic system 8 mainly comprises an oil tank 80, a hydraulic controller 81, a hydraulic power device 82 and a hydraulic pipeline 83; the oil tank 80 is positioned at the right front of the experiment table 1; the hydraulic power device 82 and the hydraulic controller 81 are positioned above the oil tank 80; the hydraulic line 83 connects the oil tank 80, the hydraulic controller 81, and the hydraulic cylinder 20.

In this embodiment, the middle portion of the upper connecting rod 32 of the tensile test experiment platform is provided with a thread, the total length of the upper connecting rod 32 is 280mm, and the length of the thread is 200 mm.

The upper connecting piece 3 and the lower connecting piece 7 of the tensile test experiment platform of the embodiment are respectively provided with three groups of top sleeves 70, top rods 71 and rotary rods 72.

The length of a test piece 6 of the tensile test experiment platform is 200mm, and the diameter of the test piece is 10 mm.

The length of the rotating rod 31 of the tensile test experiment platform is 120mm, and the diameter of the rotating rod is 16 mm.

The length of the experimental platform experiment table 1 for the tensile test of the embodiment is 850mm, the width is 600mm, and the height is 200 mm.

When the experiment platform is used, the test piece 6 needs to be placed in the lower connecting piece 7 firstly, the rotating rod 72 is adjusted, the top sleeve 70 is enabled to clamp the test piece 6, then the rotating rod 31 is rotated to adjust the upper connecting piece 3 to the position above the test piece 6, the test piece 6 is enabled to be positioned in the fixed clamping piece 30 of the upper connecting piece part 3 to be clamped and fixed, and the rotating rod 31 is adjusted again to enable the test piece 6 to be in a micro-stress state.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine features of different embodiments or examples and features of different embodiments or examples described in this specification without contradiction.

Although the embodiments of the present invention have been shown and described, it is understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A tensile test experiment platform, characterized by comprising: the device comprises a test bench, a controller, a tension display, a displacement display, a hydraulic lifting device, an upper connecting piece, a rotating rod, an upper connecting rod, a connecting bench, a sensor seat, a displacement sensor, a test piece, a lower connecting piece, a top sleeve, a top rod, a rotating rod, a hydraulic system, an oil tank, a hydraulic controller, a hydraulic power device and a hydraulic pipeline; the hydraulic lifting devices are positioned on the left side and the right side of the experiment table; the hydraulic lifting device consists of a hydraulic cylinder and a hydraulic rod; the connecting table is positioned above the left hydraulic rod and the right hydraulic rod; the upper connecting piece is positioned in the middle of the connecting table; the upper connecting piece consists of a rotating rod, an upper connecting rod, a top sleeve, a top rod and a rotating rod; the upper connecting rod is connected with the connecting table through threads; the sensor seat is positioned in front of the connecting table; the displacement sensor is positioned on the sensor seat; the lower connecting piece is positioned in the middle of the experiment table; the test piece is fixed between the upper connecting piece and the lower connecting piece; the hydraulic system is positioned in front of the experiment table; the hydraulic system mainly comprises an oil tank, a hydraulic controller, a hydraulic power device and a hydraulic pipeline; the oil tank is positioned at the front right of the experiment table; the hydraulic power device and the hydraulic controller are positioned above the oil tank; the hydraulic pipeline is connected with the oil tank, the hydraulic controller and the hydraulic cylinder.

2. The tension test experiment platform as claimed in claim 1, wherein the upper connecting rod is threaded at a middle portion thereof, the total length of the upper connecting rod is 280mm, and the length of the thread is 200 mm.

3. The tension test experiment platform as claimed in claim 1, wherein the upper connecting member and the lower connecting member each have three sets of top sleeves, top rods and swing rods.

4. The tension test experiment platform as claimed in claim 1, wherein the test piece has a length of 200mm and a diameter of 10 mm.

5. The tension test experiment platform as claimed in claim 1, wherein the length of the rotating rod is 120mm, and the diameter of the rotating rod is 16 mm.

6. The tension test experiment platform as claimed in claim 1, wherein the length of the experiment table is 850mm, the width of the experiment table is 600mm, and the height of the experiment table is 200 mm.