Tensile testing device for PE water supply pipe

Abstract

The utility model relates to the technical field of tensile testing of water supply pipes, and particularly discloses a tensile testing device of a PE (Poly Ethylene) water supply pipe, which comprises a tensile testing mechanism comprising a supporting assembly and an upper fixing assembly arranged on the supporting assembly; the two electric telescopic rods are controlled to be started at the same time, the output ends of the electric telescopic rods push the connecting frame to move downwards, the connecting frame drives the sliding frame to move stably under accurate guiding of the sliding rod and the T-shaped block, and therefore the two sample strip straightening assemblies move downwards as a whole, and the sample strip straightening assemblies can be straightened. The two straightening rollers are respectively positioned on two sides of the sample strip and gradually roll and move downwards, so that the sample strip is kept in a straight line state in the whole process, the sample bending or deviation possibly caused by manually straightening the sample strip is effectively avoided, and the problems of fixing deviation of the lower end of the sample strip and falling of the sample strip in the subsequent testing process are further prevented.

Description

Technical Field

[0001] This utility model belongs to the technical field of tensile testing of water supply pipes, specifically a tensile testing device for PE water supply pipes. Background Technology

[0002] In the production and application of water supply pipes, tensile strength is one of the important indicators for measuring their quality. Especially for PE (polyethylene) water supply pipes, which are widely used in urban water supply, agricultural irrigation and other fields, the stability of their tensile strength is directly related to the service life and safety of the pipes.

[0003] Existing tensile testing devices require manual straightening of the specimen during use. However, the manual straightening process makes it difficult to ensure the straightness of the specimen, which can easily cause the specimen to bend or shift, leading to a deviation in the fixed position of the lower end of the specimen. This deviation can cause the specimen to fall off during subsequent testing, thus hindering the smooth progress of the test. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a tensile testing device for PE water supply pipes. This device solves the problem in the prior art where manual straightening of the sample strip is required, making it difficult to ensure the straightness of the sample strip. This can easily cause the sample strip to bend or shift, leading to a deviation in the fixed position of the lower end of the sample strip. Such deviation can cause the sample strip to fall off during subsequent testing, thus hindering the smooth progress of the test.

[0005] A tensile testing device for PE water supply pipes includes: a tensile testing mechanism, including a support component, an upper fixing component mounted on the support component, a lower fixing component slidably engaged on the support component, and a driving component for driving the lower fixing component to move;

[0006] The spline straightening mechanism includes a set of sliding components that are slidably engaged with the support component, a spline straightening component that is slidably engaged with the sliding components, and an electric telescopic rod for driving the sliding components to rise and fall.

[0007] Preferably, the support assembly includes a base, a set of support frames is fixedly connected to the top of the base, a set of sliding rods is fixedly connected to each set of support frames via mounting blocks, and a T-shaped block is also fixedly connected to the support frame.

[0008] Preferably, the upper fixing assembly includes an upper fixing plate fixedly connected to the top of a set of support frames, and an upper fixing clamp is fixedly connected to the upper fixing plate; the lower fixing assembly includes a lower fixing plate slidably connected between a set of support frames, and a lower fixing clamp is fixedly connected to the lower fixing plate.

[0009] Preferably, a set of the sliding components includes a sliding frame slidably connected to a set of sliding rods and a T-block, a connecting frame fixedly connected to the sliding frame, and a set of guide rods fixedly connected between the sliding frame and the connecting frame.

[0010] Preferably, the spline straightening assembly includes a spring and an L-shaped bracket slidably connected to the guide rod, a rotating shaft is fixedly connected between a group of the L-shaped brackets, a straightening roller is rotatably connected to the outside of the rotating shaft, one end of the electric telescopic rod is fixed to the upper fixed plate, and the other end of the electric telescopic rod is fixedly connected to the connecting frame.

[0011] Preferably, the drive assembly includes a motor and a set of ball screws. The motor is fixedly connected to the top of the upper fixed plate. One end of each set of ball screws is rotatably connected to a set of support frames via bearings. The other end of each set of ball screws extends into the base and is fixedly connected to a pulley. A belt is fitted around the outside of each set of pulleys. The output end of the motor is fixedly connected to one of the ball screws via a coupling. The lower fixed plate is threaded to the outside of the set of ball screws.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model simultaneously controls the activation of two electric telescopic rods. The output end of the electric telescopic rod pushes the connecting frame downward. Under the precise guidance of the sliding rod and T-block, the connecting frame drives the sliding frame to move stably, thereby causing the two spline straightening components to move downward as a whole. As the spline straightening components move, the two straightening rollers are located on both sides of the spline and gradually roll downward, ensuring that the spline remains straight throughout the process. This effectively avoids sample bending or displacement that may be caused by manual spline straightening, and thus prevents the lower end of the spline from being fixed off and the spline from falling off during subsequent testing.

[0014] 2. This utility model uses a starting motor, whose output drives one of the ball screws to rotate. As the ball screw rotates, the pulley connected to it also rotates. This pulley transmits power to another pulley via a belt, which in turn drives the other ball screw to rotate synchronously. Under this transmission mechanism, the lower fixed plate is driven to rise or fall, and at the same time, it drives the lower fixed clamp to move together, so that the specimen can be stably subjected to tensile force in the tensile test. This not only improves the automation level of the test, but also ensures the accuracy and reliability of the test results, effectively improving the test efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2This is an exploded structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the tensile testing mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the spline straightening mechanism of this utility model.

[0019] In the diagram: 1. Tensile testing mechanism; 11. Support assembly; 111. Base; 112. Support frame; 113. Slide rod; 114. T-block; 12. Upper fixing assembly; 121. Upper fixing plate; 122. Upper fixing clamp; 13. Lower fixing assembly; 131. Lower fixing plate; 132. Lower fixing clamp; 14. Drive assembly; 2. Spline straightening mechanism; 21. Sliding assembly; 211. Sliding frame; 212. Connecting frame; 213. Guide rod; 22. Spline straightening assembly; 221. Spring; 222. L-shaped bracket; 223. Rotating shaft; 224. Straightening roller; 23. Electric telescopic rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 4 As shown:

[0022] Example 1: This utility model provides a tensile testing device for PE water supply pipes, including: a tensile testing mechanism 1, including a support component 11, an upper fixing component 12 installed on the support component 11, a lower fixing component 13 slidably embedded on the support component 11, and a driving component 14 for driving the lower fixing component 13 to move.

[0023] The spline straightening mechanism 2 includes a set of sliding components 21 that are slidably embedded in the support component 11, a spline straightening component 22 that is slidably embedded in the sliding component 21, and an electric telescopic rod 23 for driving the sliding component 21 to rise and fall.

[0024] Specifically, the support assembly 11 includes a base 111, a set of support frames 112 are fixedly connected to the top of the base 111, a set of slide rods 113 are fixedly connected to each set of support frames 112 by mounting blocks, and T-shaped blocks 114 are also fixedly connected to the support frames 112.

[0025] Specifically, the upper fixing component 12 includes an upper fixing plate 121 fixedly connected to the top of a set of support frames 112, and an upper fixing clamp 122 fixedly connected to the upper fixing plate 121. The lower fixing component 13 includes a lower fixing plate 131 slidably connected between a set of support frames 112, and a lower fixing clamp 132 fixedly connected to the lower fixing plate 131.

[0026] Specifically, a set of sliding components 21 includes a sliding frame 211 slidably connected to a set of sliding rods 113 and a T-shaped block 114, a connecting frame 212 fixedly connected to the sliding frame 211, and a set of guide rods 213 fixedly connected between the sliding frame 211 and the connecting frame 212.

[0027] Specifically, the spline straightening assembly 22 includes a spring 221 and an L-shaped bracket 222 that are slidably connected to the guide rod 213. A rotating shaft 223 is fixedly connected between a group of L-shaped brackets 222. A straightening roller 224 is rotatably connected to the outside of the rotating shaft 223. One end of the electric telescopic rod 23 is fixed to the upper fixed plate 121, and the other end of the electric telescopic rod 23 is fixedly connected to the connecting frame 212.

[0028] As can be seen from the above, during use, firstly, one end of the PE water supply pipe template is firmly fixed to the upper fixing clamp 122. Then, the two rotating shafts 223 are pulled in opposite directions, causing the two straightening rollers 224 to gradually separate and move to both sides of the template. During this process, the L-shaped bracket 222 moves along the guide rod 213, while simultaneously compressing the spring 221 to deform it. When the straightening rollers 224 are accurately in place, the rotating shaft 223 is released, and the spring 221 immediately returns to its original deformation, pushing the L-shaped bracket 222 to move. This causes the straightening rollers 224 on the rotating shaft 223 to press tightly against the template, ensuring that the template is effectively straightened. At this time, the two electric telescopic rods 23 are simultaneously activated. The output end of the electric telescopic rods 23 pushes the connecting frame 212 downward. Under the precise guidance of the sliding rod 113 and the T-block 114, the connecting frame 212 drives the sliding frame 211. The two spline straightening components 22 move downwards as a whole, and as they move, the two straightening rollers 224, located on both sides of the spline, gradually roll downwards, ensuring that the spline remains straight throughout the process. This effectively avoids sample bending or displacement that may occur when manually straightening the spline, thus preventing the lower end of the spline from being fixed off and the spline from falling off during subsequent testing. After the spline is straightened, the drive component 14 is activated, causing the lower fixing plate 131 to move upwards. The lower fixing plate 131 then causes the lower fixing clamp 132 to move upwards. When it reaches the appropriate position, the lower end of the spline is firmly fixed to the lower fixing clamp 132. After fixing, the drive component 14 is activated again, causing the lower fixing plate 131 to move downwards. The lower fixing plate 131 then causes the lower fixing clamp 132 to stretch the spline, thereby performing a tensile test.

[0029] like Figure 3 and Figure 4 As shown:

[0030] Example 2: This example is basically the same as the previous example, except that the drive assembly 14 includes a motor and a set of ball screws. The motor is fixedly connected to the top of the upper fixed plate 121. One end of the set of ball screws is rotatably connected to a set of support frames 112 through bearings. The other end of the set of ball screws extends into the base 111 and is fixedly connected to pulleys. A belt is fitted on the outside of the set of pulleys. The output end of the motor is fixedly connected to one of the ball screws through a coupling. The lower fixed plate 131 is threaded to the outside of the set of ball screws.

[0031] As can be seen from the above, when the motor is started, its output drives one of the ball screws to rotate. As the ball screw rotates, the pulley connected to it also rotates. This pulley transmits power to another pulley through the belt, which in turn drives the other ball screw to rotate synchronously. Under this transmission mechanism, the lower fixed plate 131 is driven to rise or fall, and at the same time, it drives the lower fixed clamp 132 to move together, so that the specimen can be stably subjected to tensile force in the tensile test. This not only improves the automation level of the test, but also ensures the accuracy and reliability of the test results, effectively improving the test efficiency.

[0032] Application process:

[0033] Preparation phase:

[0034] Secure one end of the PE water supply pipe sample to the upper fixing clamp 122.

[0035] Spline straightening:

[0036] Pull the two rotating shafts 223 in a direction away from each other, so that the two straightening rollers 224 gradually separate and move to both sides of the spline. After releasing the rotating shafts 223, the spring 221 returns to its deformation and pushes the straightening rollers 224 to stick tightly to the spline, ensuring that the spline is effectively straightened. Start the electric telescopic rod 23 to move the entire spline straightening assembly 22 downward, and the straightening rollers 224 gradually roll down to keep the spline in a straight line state.

[0037] The lower end of the spline is fixed:

[0038] The control drive component 14 is activated, which moves the lower fixing plate 131 upward, thereby moving the lower fixing clamp 132 upward, and firmly fixing the lower end of the spline onto the lower fixing clamp 132.

[0039] Tensile strength test:

[0040] Control the drive assembly 14 again to move the lower fixed plate 131 downward, thereby driving the lower fixed clamp 132 to stretch the spline.

[0041] Test results:

[0042] Observe and record the performance of the spline during the stretching process to evaluate its tensile properties.

[0043] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all use conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Any content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0044] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. "A plurality of" means two or more, unless otherwise explicitly specified.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tensile strength testing device for PE water supply pipes, characterized in that, include: The tensile testing mechanism (1) includes a support component (11), an upper fixing component (12) mounted on the support component (11), a lower fixing component (13) slidably embedded on the support component (11), and a driving component (14) for driving the lower fixing component (13) to move. The spline straightening mechanism (2) includes a set of sliding components (21) slidably embedded in the support component (11), a spline straightening component (22) slidably embedded in the sliding component (21), and an electric telescopic rod (23) for driving the sliding component (21) to rise and fall.

2. The tensile strength testing device for PE water supply pipes as described in claim 1, characterized in that, The support assembly (11) includes a base (111), and a set of support frames (112) are fixedly connected to the top of the base (111). A set of sliding rods (113) are fixedly connected to each set of support frames (112) through mounting blocks. A T-shaped block (114) is also fixedly connected to the support frame (112).

3. The tensile strength testing device for PE water supply pipes as described in claim 2, characterized in that, The upper fixing assembly (12) includes an upper fixing plate (121) fixedly connected to the top of a set of support frames (112), and an upper fixing clamp (122) fixedly connected to the upper fixing plate (121). The lower fixing assembly (13) includes a lower fixing plate (131) slidably connected between a set of support frames (112), and a lower fixing clamp (132) fixedly connected to the lower fixing plate (131).

4. The tensile strength testing device for PE water supply pipes as described in claim 3, characterized in that, A set of the sliding components (21) includes a sliding frame (211) slidably connected to a set of sliding rods (113) and a T-shaped block (114), a connecting frame (212) is fixedly connected to the sliding frame (211), and a set of guide rods (213) is fixedly connected between the sliding frame (211) and the connecting frame (212).

5. The tensile strength testing device for PE water supply pipes as described in claim 4, characterized in that, The spline straightening assembly (22) includes a spring (221) and an L-shaped bracket (222) slidably connected to the guide rod (213). A rotating shaft (223) is fixedly connected between a group of L-shaped brackets (222). A straightening roller (224) is rotatably connected to the outside of the rotating shaft (223). One end of the electric telescopic rod (23) is fixed to the upper fixed plate (121), and the other end of the electric telescopic rod (23) is fixedly connected to the connecting frame (212).

6. The tensile strength testing device for PE water supply pipes as described in claim 5, characterized in that, The drive assembly (14) includes a motor and a set of ball screws. The motor is fixedly connected to the top of the upper fixed plate (121). One end of the set of ball screws is rotatably connected to a set of support frames (112) through bearings. The other end of the set of ball screws extends into the base (111) and is fixedly connected to pulleys. A belt is fitted on the outside of the set of pulleys. The output end of the motor is fixedly connected to one of the ball screws through a coupling. The lower fixed plate (131) is threaded to the outside of the set of ball screws.

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