Testing device

Abstract

The utility model discloses a testing device which comprises a weight disc and further comprises a vertical frame, the front face of the vertical frame is provided with a limiting sliding groove, and a screw rod is installed in the limiting sliding groove in a threaded mode. The measuring mechanism comprises a first sliding block and a bracket, the upper end of the bracket is fixedly connected with the lower portion of the first sliding block, the first sliding block is installed in the limiting sliding groove in a sliding mode, and the weight disc is placed on the bracket; and the jacking mechanism comprises a second sliding block and a damping telescopic rod, the second sliding block is installed in the limiting sliding groove in a sliding mode, and a threaded sleeve block and a clamp are installed on the second sliding block in an embedded mode. Through the self weight of the weight disc and the measuring mechanism and the downward pulling force applied to the organic synthetic material, under the condition that the organic synthetic material deforms, the pulling force applied to the organic synthetic material does not change due to the fact that the overall mass of the weight disc and the measuring mechanism is not changed; and the organic synthetic material with high deformation capability can be effectively tested.

Description

Technical Field

[0001] The utility model relates to a testing device, in particular to a strength testing device for machined composite materials. Background Art

[0002] There are many varieties of organic synthetic materials. Synthetic plastics, synthetic fibers, and synthetic rubber are what we usually call the three major synthetic materials. They mainly refer to the synthesis of large molecular polymers from small molecule organic substances such as olefins through chemical synthesis. Many things people use are organic synthetic materials. After the production of organic synthetic materials is completed, an organic synthetic material strength testing device is required to carry out strength tests to facilitate the screening of organic synthetic materials with unqualified strength and prevent unqualified products from entering the market.

[0003] For example, a Chinese patent publication with publication number CN213148531U discloses an organic synthetic material strength testing device, comprising a strength testing base assembly, wherein the internal threads of the strength testing base assembly are provided with two groups of organic synthetic material clamping assemblies, and the three clamping arms are clamped, approached, and separated by bidirectional rotation of three gear discs. In this way, the organic synthetic material is conveniently clamped and fixed on the two groups of organic synthetic material clamping assemblies, which is beneficial for subsequent strength testing. The movable internal threaded end tube on the organic synthetic material clamping assembly is threadedly connected to the double-threaded screw on the strength testing base assembly, and the two groups of organic synthetic material clamping assemblies are synchronously moved closer and moved away and pulled together by the bidirectional rotation of the strength stretching motor. In this way, the synchronous movement and pulling together of the two groups of organic synthetic material clamping assemblies are achieved, and the strength of the organic synthetic material is tested by this clamping and pulling test method.

[0004] Some problems were found during the use of the above-mentioned existing organic synthetic material strength testing device. First, a clamping and pulling test method was used to test the strength of the organic synthetic material. Organic synthetic materials, such as polyethylene and other polymer compounds, have good ductility. After being subjected to tension, the organic synthetic material remains under tension for a long time and will deform, causing the length to increase with the test. As a result, it is impossible to maintain a constant tension on the material, resulting in the inability to accurately measure the material strength. Utility Model Content

[0005] The purpose of the present invention is to provide a testing device to solve the existing problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a testing device, comprising a weight plate, and further comprising:

[0007] A stand, wherein a limit slot is provided on the front of the stand, and a screw is installed in the thread of the limit slot;

[0008] The measuring mechanism includes a first slider and a bracket. The upper end of the bracket is fixedly connected to the lower side of the first slider. The first slider is slidably installed in the limiting slide groove. The weight plate is placed on the bracket.

[0009] A supporting mechanism includes a second slider and a damping telescopic rod. The second slider is slidably mounted in a limiting slide groove. The second slider is embedded with a threaded sleeve. The threaded sleeve is engaged with the screw thread. The lower end of the damping telescopic rod is fixedly connected to the second slider.

[0010] The clamps are provided with two clamps, which are respectively fixed to the stand and the front of the first slider.

[0011] Preferably, a base is fixedly connected to the bottom of the stand, and a scale is embedded and installed on the front of the stand and on one side of the limiting slide groove.

[0012] Preferably, a motor bracket is fixedly connected to the stand, a driving motor is fixedly connected to the motor bracket, and an output end of the driving motor is fixedly connected to a screw rod.

[0013] Preferably, an avoidance through hole is provided in the first slider, threaded fixing holes are provided on the measuring mechanism and the stand, a connecting protrusion is fixed to the back of the clamp, a connecting through hole is provided in the connecting protrusion, a fixing bolt is provided in the connecting through hole, and the fixing bolt is threadedly matched with the threaded fixing hole.

[0014] Preferably, a rubber disc is fixed to the upper end of the damping telescopic rod, a buffer spring is sleeved on the damping telescopic rod, and a limiting sleeve rod is fixed to the upper surface of the bracket.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The weight of the weight disc and the measuring mechanism applies a downward pulling force to the organic synthetic material. When the organic synthetic material is deformed, the overall mass of the weight disc and the measuring mechanism remains unchanged, and thus the pulling force applied to the organic synthetic material will not change. This makes it possible to effectively test organic synthetic materials with high deformation capacity.

[0017] 2. Through the cooperation between the measuring mechanism and the supporting mechanism, after the tested organic synthetic material breaks, the supporting mechanism will provide cushioning and shock absorption for the sliding measuring mechanism to avoid damage to the device.

[0018] 3. The ruler can be used to compare the length changes of organic synthetic materials before and after testing, so as to detect the ductility and deformation ability of organic synthetic materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the stand structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the measuring mechanism structure of the utility model;

[0022] Figure 4 This is a schematic structural diagram of the jacking mechanism of the utility model;

[0023] Figure 5 This is a schematic diagram of the fixture structure of the present utility model.

[0024] In the figure: 1. Stand; 101. Base; 102. Scale; 103. Limiting slide; 104. Screw; 105. Motor bracket; 106. Driving motor; 2. Measuring mechanism; 201. First slider; 202. Avoidance through-hole; 203. Bracket; 204. Limiting sleeve; 3. Support mechanism; 301. Second slider; 302. Threaded sleeve; 303. Damping telescopic rod; 304. Buffer spring; 305. Rubber disc; 4. Clamp; 401. Connecting protrusion; 402. Connecting through-hole; 403. Fixing bolt; 5. Threaded fixing hole; 6. Weight plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The utility model provides a technical solution: a testing device, including a weight plate 6, and also includes:

[0027] The stand 1 has a limit slot 103 on the front, and a screw 104 is installed in the inner thread of the limit slot 103;

[0028] Measuring mechanism 2, measuring mechanism 2 includes a first slider 201 and a bracket 203. The upper end of the bracket 203 is fixed to the lower side of the first slider 201. The first slider 201 is slidably mounted in the limiting chute 103. The weight plate 6 is placed on the bracket 203.

[0029] The supporting mechanism 3 includes a second slider 301 and a damping telescopic rod 303. The second slider 301 is slidably mounted in the limiting slide groove 103. The second slider 301 is embedded with a threaded sleeve 302. The threaded sleeve 302 is threadedly engaged with the screw 104. The lower end of the damping telescopic rod 303 is fixedly connected to the second slider 301.

[0030] The clamp 4 is provided with two clamps 4, which are fixed to the stand 1 and the front of the first slider 201 respectively.

[0031] In this embodiment, two clamps 4 can be used to clamp the two ends of the organic synthetic material to be tested, and an appropriate amount of weight disc 6 is placed on the bracket 203. The weight disc 6 and the measuring mechanism 2 are combined to weigh the required strength for the test. The screw 104 is threadedly matched with the threaded sleeve 302. Rotating the screw 104 can drive the second slider 301 to move downward. The downward movement of the second slider 301 will drive the damping telescopic rod 303 to move downward. At this time, the measuring mechanism 2 will lose the support of the supporting mechanism 3. The measuring mechanism 2 and the weight disc 6 are completely pulled by the tested organic synthetic material and suspended in the air. The weight of the weight disc 6 and the measuring mechanism 2 is used. The organic synthetic material is pulled downward, so that when the organic synthetic material is deformed, since the overall mass of the weight disk 6 and the measuring mechanism 2 remains unchanged, the pulling force applied to the organic synthetic material will not change, thereby effectively testing whether the tensile strength of the organic synthetic material meets the standard. When the organic synthetic material has defects, the organic synthetic material suddenly breaks under the pulling of the measuring mechanism 2. At this time, the measuring mechanism 2 will quickly move downward and contact with the damping telescopic rod 303. The damping telescopic rod 303 and the buffer spring 304 will provide a certain buffering capacity to prevent the measuring mechanism 2 from sliding to the bottom due to the inertia of the downward movement plus its own weight, causing damage to itself.

[0032] Among them, in order to achieve the purpose of driving the supporting mechanism 3 to move, this device adopts the following technical solutions: a base 101 is fixedly connected to the bottom of the stand 1, a scale 102 is embedded and installed on the front of the stand 1 and on one side of the limiting slide groove 103, a motor bracket 105 is fixedly connected to the top of the stand 1, a drive motor 106 is fixedly connected to the top of the motor bracket 105, and the output end of the drive motor 106 is fixedly connected to the screw 104.

[0033] The stand 1 is kept in an upright position by the base 101, and the length change of the organic synthetic material before and after the test can be compared by using the ruler 102, so as to detect the ductility and deformation ability of the organic synthetic material. Starting the drive motor 106 can drive the screw 104 to rotate, and the rotation of the screw 104 will drive the supporting mechanism 3 to move, thereby adjusting the position of the supporting mechanism 3.

[0034] Among them, in order to achieve the purpose of reducing the impact force of the measuring mechanism 2, this device adopts the following technical solutions: an avoidance through hole 202 is opened in the first slider 201, and threaded fixing holes 5 are opened on the measuring mechanism 2 and the stand 1. A connecting protrusion 401 is fixed to the back of the clamp 4, and a connecting through hole 402 is opened in the connecting protrusion 401. A fixing bolt 403 is provided in the connecting through hole 402, and the fixing bolt 403 is threadedly matched with the threaded fixing hole 5. A rubber disc 305 is fixed to the upper end of the damping telescopic rod 303, and a buffer spring 304 is sleeved on the damping telescopic rod 303. A limiting sleeve rod 204 is fixed on the bracket 203.

[0035] By avoiding the through hole 202, interference between the screw rod 104 and the first slider 201 can be avoided. After the fixing bolt 403 passes through the connecting through hole 402 and is screwed into the threaded fixing hole 5, the clamp 4 can be fixed to the front of the stand 1 and the first slider 201. A through hole is provided at the center of the weight disk 6, and the weight disk 6 can be put on the limiting sleeve 204 through the through hole, thereby limiting the weight disk 6 and preventing the weight disk 6 from slipping off the bracket 203. The buffer spring 304 can provide a certain buffering capacity. When the measuring mechanism 2 moves downward rapidly, it will first contact the rubber disk 305. The rubber disk 305 is made of rubber, which can avoid damage to the measuring mechanism 2. At the same time, the rubber disk 305 will move downward under force to compress the buffer spring 304. The buffer spring 304 will absorb energy when compressed, and cooperate with the damping telescopic rod 303 to reduce the impact force.

[0036] The working principle and usage process of the present invention are as follows: when in use, the device needs to be placed in a suitable position, and the clamp 4 is used to clamp the organic synthetic material to be tested, and the two ends of the organic synthetic material are fixed. Then a certain weight plate 6 is placed on the bracket 203, so that the overall weight of the measuring mechanism 2 and the weight plate 6 is equal to the pulling force to be tested, and then the drive motor 106 is started to drive the screw 104 to rotate. The rotation of the screw 104 will drive the supporting mechanism 3 to move downward. The slow downward movement of the supporting mechanism 3 will gradually reduce the support for the measuring mechanism 2. The measuring mechanism 2 gradually relies on the organic synthetic material to pull it suspended in the air, and the measuring mechanism 2 will also apply a downward pulling force to the organic synthetic material. The degree of deformation of the organic synthetic material can be observed using the scale 102. After a certain period of time, if the organic synthetic material is not broken and the degree of deformation is within a reasonable range, it is a qualified product. When the organic synthetic material is broken or the degree of deformation exceeds the expected range, it is an unqualified product.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device comprising a weight plate (6), characterized in that: Also includes: A stand (1), wherein a limiting slide groove (103) is provided on the front of the stand (1), and a screw rod (104) is installed on the inner thread of the limiting slide groove (103); A measuring mechanism (2), the measuring mechanism (2) comprising a first slider (201) and a bracket (203), the upper end of the bracket (203) being fixedly connected to the lower side of the first slider (201), the first slider (201) being slidably mounted in a limiting chute (103), and the weight plate (6) being placed on the bracket (203); A supporting mechanism (3), the supporting mechanism (3) comprising a second slider (301) and a damping telescopic rod (303), the second slider (301) being slidably mounted in a limiting slide groove (103), the second slider (301) being embedded with a threaded sleeve (302), the threaded sleeve (302) being threadably engaged with the screw rod (104), and the lower end of the damping telescopic rod (303) being fixedly connected to the second slider (301); The clamps (4) are provided in two pieces and are respectively fixed to the front of the stand (1) and the first slide block (201).

2. A testing device according to claim 1, characterized in that: A base (101) is fixedly connected to the bottom of the stand (1), and a scale (102) is embedded and installed on the front of the stand (1) and located on one side of the limiting sliding groove (103).

3. A testing device according to claim 1, characterized in that: A motor bracket (105) is fixedly connected to the stand (1), a driving motor (106) is fixedly connected to the motor bracket (105), and an output end of the driving motor (106) is fixedly connected to the screw rod (104).

4. A testing device according to claim 1, characterized in that: An avoidance through hole (202) is provided in the first sliding block (201), threaded fixing holes (5) are provided on the measuring mechanism (2) and the stand (1), a connecting protrusion (401) is fixedly connected to the rear of the clamp (4), a connecting through hole (402) is provided in the connecting protrusion (401), a fixing bolt (403) is provided in the connecting through hole (402), and the fixing bolt (403) is threadedly matched with the threaded fixing hole (5).

5. A testing device according to claim 1, characterized in that: The upper end of the damping telescopic rod (303) is fixedly connected to a rubber disc (305), a buffer spring (304) is sleeved on the damping telescopic rod (303), and a limiting sleeve rod (204) is fixedly connected to the upper surface of the bracket (203).

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