Tensile testing device for rubber ring

Abstract

The utility model discloses a rubber ring tensile test device, relates to rubber ring tensile test field, including testboard, pull rod and pull shaft, the testboard is equipped with the driver that is used for driving pull shaft, testboard outer wall is equipped with two sets of mounting rack, and the end part of two sets of mounting rack is rotatingly equipped with the protective frame that is used for protection, the testboard is equipped with the driver that is used for driving pull shaft, the testboard outer wall is equipped with the protective frame that is used for protection. And the protection frame is an arc-shaped plate. The protective frame is arranged and can shield the pull rod and the pull shaft, so that when the rubber ring is snapped, the protective frame can also protect the rubber ring, the rubber ring cannot fall to an operator through the protective frame, the probability that the rubber ring falls to the operator when the rubber ring is snapped is effectively reduced, and the service life of the rubber ring is prolonged. And meanwhile, under the action of a torsional spring box and a driving assembly, when the pull rod starts to run, the protection frame can be automatically closed, and when the pull rod resets, the protection frame can be automatically opened, so that the use convenience of the device is improved, and the device is more convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of rubber ring tension testing, in particular to a rubber ring tension testing device. Background Art

[0002] The room temperature tensile test of O-ring is one of the commonly used tests to determine its mechanical properties. It mainly uses a tensile testing machine to determine the tensile strength and elongation at break of the rubber ring. The rubber ring is usually hung on the fixture of the tensile testing machine, and then the fixture is driven to move to stretch the rubber ring.

[0003] The main components of the current tensile testing device include: rollers, roller drivers and workbenches. When in use, the rubber ring is hung on a pair of symmetrically distributed rollers. Starting the roller driver will cause the pair of rollers to move away from each other. When the pair of rollers move away from each other, the rubber ring will be stretched, thereby completing the tensile test.

[0004] However, when the rubber ring is subjected to a tensile test, some of the rubber rings may be broken due to the different tensile strengths of the rubber rings. If the operator is observing the test at this time, the broken rubber ring may easily fall on the operator, which may have a certain degree of impact on the operator's body and mood. Therefore, the present application proposes a rubber ring tensile test device to reduce the impact of the rubber ring being broken on the operator. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a rubber ring tensile test device to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rubber ring tensile test device, comprising a test bench, a pull rod and a pull shaft, the test bench is equipped with a driver for driving the pull shaft, the outer wall of the test bench is equipped with two sets of mounting frames, and the ends of the two sets of mounting frames are rotatably equipped with protective frames for protection, and the protective frames are designed as arc-shaped plates, and the ends of the two sets of protective frames will be attached to each other after rotation, so as to shield the pull rod and the pull shaft;

[0007] The test bench is provided with a plurality of driving components for driving the protection frame to rotate, and the side wall of the mounting frame is provided with a torsion spring box corresponding to the protection frame.

[0008] By adopting the above technical solution, the protective frame will shield the pull rod and the pull shaft, so that when the rubber ring is broken, the protective frame will also protect the rubber ring, so that the rubber ring cannot pass through the protective frame and hit the operator, effectively reducing the probability of the rubber ring breaking onto the operator when it is broken. At the same time, under the action of the torsion spring box and the drive assembly, when the pull rod starts to run, the protective frame will automatically close, and when the pull rod is reset, the protective frame will automatically open, thereby improving the convenience of use of the device and making the device more convenient to use.

[0009] The utility model is further configured that a limiting groove is provided on the outer wall of the pull shaft, and the cross section of the limiting groove is designed to be V-shaped.

[0010] By adopting the above technical solution, the fixity of the position of the rubber ring during the test is ensured, and it is also convenient for the user to determine the installation position of the rubber ring.

[0011] The utility model is further configured that the protection frame is composed of a frame and an observation window, and buffer pads are provided at the ends of the two protection frame frames.

[0012] By adopting the above technical solution, the user can observe the internal situation through the observation window.

[0013] The utility model is further configured such that the driving assembly consists of a pull block, a pull ring, a pull rope, a slider and a transmission block, and the pull rings are symmetrically installed in two groups on the outer wall of the protective frame, and the outer walls of the two groups of pull rings are both slidably installed with pull blocks, and the outer walls of the pull blocks are installed with pull ropes.

[0014] By adopting the above technical solution, it is ensured that when the pull rope is pulled, the protective frame can be opened smoothly.

[0015] The utility model is further configured that the slider is slidably mounted in the outer wall of the mounting frame close to the pull rod, one end of the slider is connected to the pull rope, and the other end of the slider protrudes out of the mounting frame and is located outside the test bench.

[0016] By adopting the above technical solution, it is ensured that the protection frame can obtain the power to rotate when the slider slides.

[0017] The utility model is further configured such that two transmission blocks are symmetrically installed on the outer walls of both sides of the pull rod, and the ends of the transmission blocks and the ends of the sliders are located on a vertical line, and the spacing between the two ends of the transmission blocks is greater than the spacing between the two ends of the sliders.

[0018] By adopting the above technical solution, it is ensured that the sliding block obtains sliding power as the pull rod is reset.

[0019] The utility model is further configured that two torsion spring boxes are symmetrically installed on the outer walls of both sides of the mounting frame, and the torsion spring box is composed of a shell and a torsion spring, wherein the torsion spring is fixedly connected to the rotating shaft of the protection frame.

[0020] By adopting the above technical solution, when the transmission block is separated from the sliding block, the protection frame will automatically start to close.

[0021] The utility model is further configured such that the distance between the two groups of torsion spring boxes on the outer wall of the mounting frame is greater than the distance between the two ends of the transmission blocks.

[0022] By adopting the above technical solution, it is ensured that the setting of the torsion spring box will not affect the sliding of the transmission block.

[0023] In summary, the utility model mainly has the following beneficial effects:

[0024] The utility model is provided with a protection frame, which can shield the pull rod and the pull shaft, so that when the rubber ring is broken, the protection frame can also protect the rubber ring, so that the rubber ring cannot break onto the operator through the protection frame, effectively reducing the probability of the rubber ring breaking onto the operator when it is broken. At the same time, under the action of the torsion spring box and the driving assembly, when the pull rod starts to run, the protection frame will automatically close, and when the pull rod is reset, the protection frame will automatically open, thereby improving the convenience of use of the device and making the device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the pull rod and the pull shaft of the utility model when in operation;

[0027] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 It is a schematic diagram of the structure of the installation frame and the protection frame of the utility model after partial cutaway;

[0029] Figure 5 This is a schematic diagram of the three-dimensional structure after removing the test bench when testing the utility model.

[0030] In the figure: 1. test bench; 2. pull rod; 3. pull shaft; 4. limit groove; 5. mounting frame; 6. protection frame; 7. pull block; 8. pull ring; 9. pull rope; 10. slide block; 11. transmission block; 12. torsion spring box. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0032] The following describes an embodiment of the utility model based on its overall structure.

[0033] Embodiment 1

[0034] A rubber ring tensile test device, such as Figure 1 - Figure 5 As shown, it includes a test bench 1, a pull rod 2 and a pull shaft 3. A driver for driving the pull shaft 3 is installed on the test bench 1. When the driver is started, the pull rod 2 drives the pull shaft 3 to move, so that the pull shaft 3 starts to perform a tensile test on the rubber ring. At the same time, two groups of mounting frames 5 are installed on the outer wall of the test bench 1, and the ends of the two groups of mounting frames 5 are rotatably installed with protective frames 6 for protection, and the protective frames 6 are designed as arc-shaped plates. After the two groups of protective frames 6 are rotated, their ends will stick to each other, so that the two protective frames 6 form a protective cover to shield the pull rod 2 and the pull shaft 3, so that when the rubber ring is broken, the protective frame 6 will also protect the rubber ring, so that the rubber ring cannot pass through the protective frame 6 to break onto the operator, effectively reducing the probability of the rubber ring breaking onto the operator when it is broken. It should be noted that Figure 1 The test bench 1 and the pull rod 2 in the middle are partially cut away drawings.

[0035] See also Figure 1 - Figure 3 A limiting groove 4 is provided on the outer wall of the pull shaft 3, so that the rubber ring can be placed in the limiting groove 4. The limiting groove 4 will limit the position of the rubber ring to ensure the fixed position of the rubber ring during testing. It is also convenient for users to determine the installation position of the rubber ring. The cross-section of the limiting groove 4 is designed to be V-shaped, so that the limiting groove 4 has a better limiting effect on the rubber ring.

[0036] See also Figure 1 and Figure 5 The protection frame 6 is composed of a frame and an observation window, so that when the protection frame 6 blocks the pull rod 2 and the pull shaft 3, the user can observe the internal situation through the observation window, so that the setting of the protection frame 6 will not cause the operator to be unable to observe the test situation. At the same time, buffer pads are provided at the ends of the two protection frames 6, so that when the protection frame 6 is closed, the buffer pads can reduce the sound and impact loss generated when the protection frame 6 is closed.

[0037] See also Figure 1 , Figure 2 and Figure 4, the test bench 1 is provided with multiple groups of driving components for driving the protection frame 6 to rotate, and the driving components are composed of a pull block 7, a pull ring 8, a pull rope 9, a slider 10 and a transmission block 11, wherein two groups of pull rings 8 are symmetrically installed on the outer wall of the protection frame 6, and the pull ring 8 is fixedly connected to the outer wall of the protection frame 6, so that the pull ring 8 and the protection frame 6 will move synchronously, and pull blocks 7 are slidably installed on the outer walls of the two groups of pull rings 8, and a pull rope 9 is installed on the outer wall of the pull block 7, so that when the pull rope 9 is pulled, it will pull the pull ring 8 through the pull block 7, causing the pull ring 8 to drive the protection frame 6 to rotate, ensuring that the protection frame 6 can be smoothly opened, and the slider 10 is slidably installed in the outer wall of the mounting frame 5 close to the pull rod 2. Because one end of the slider 10 is connected to the pull rope 9, the slider 10 will pull the pull rope 9 when sliding, and because a guide for pulling is installed in the mounting frame 5 The guide wheel of the rope 9 makes the pull rope 9 restricted by the guide wheel when the pull rope 9 is subjected to the pulling force given by the slider 10, so that the pull rope 9 will pull the pull block 7, ensuring that the protective frame 6 will obtain the power to rotate when the slider 10 slides, and the other end of the slider 10 protrudes from the mounting frame 5 and is located outside the test bench 1. At the same time, two transmission blocks 11 are symmetrically installed on the outer walls on both sides of the pull rod 2, so that the pull rod 2 will drive the transmission blocks 11 to move synchronously when it moves, and because the end of the transmission block 11 and the end of the slider 10 are located on a vertical line, and the distance between the ends of the two transmission blocks 11 is greater than the distance between the ends of the two sliders 10, when the transmission block 11 follows the pull rod 2 to reset, the transmission block 11 will squeeze the slider 10, ensuring that the slider 10 will obtain the power to slide as the pull rod 2 is reset, and ensuring that the protective frame 6 will automatically open as the pull rod 2 is reset.

[0038] Embodiment 2

[0039] A rubber ring tensile test device, such as Figure 1 - Figure 5 As shown, the technical scheme and parts of this embodiment are basically the same as those of the first embodiment, and the same technical parts are not repeated here. The difference is that the side wall of the mounting frame 5 is installed with a torsion spring box 12 connected to the end of the protection frame 6, and the torsion spring box 12 is composed of a shell and a torsion spring. The torsion spring in the torsion spring box 12 is fixedly connected to the rotating shaft of the protection frame 6, so that when the protection frame 6 is closed, the torsion spring will begin to shrink as the protection frame 6 rotates. When the protection frame 6 loses its restriction, the torsion spring in the torsion spring box 12 will use its own characteristics to restore the protection frame 6. The protective frame 6 will automatically start to close when the transmission block 11 is separated from the slider 10, and two torsion spring boxes 12 are symmetrically installed on the outer walls of both sides of the mounting frame 5. The multiple torsion spring boxes 12 will cooperate with each other to ensure that the protective frame 6 can be smoothly closed. At the same time, the spacing between the torsion spring boxes 12 on the outer walls of the two groups of mounting frames 5 is greater than the spacing between the ends of the two transmission blocks 11, so that when the transmission block 11 slides, it will not contact the torsion spring box 12, ensuring that the setting of the torsion spring box 12 will not affect the sliding of the transmission block 11.

[0040] The working principle of the utility model is as follows: when using the device, firstly, the rubber ring is sleeved in the limit groove 4 on the outer wall of the pull shaft 3, and then the driver is started, so that the pull shaft 3 brought by the pull rod 2 starts to move, causing the rubber ring to be stretched, and the tensile test of the rubber ring begins. When the pull rod 2 starts to move to both sides, the transmission block 11 and the slider 10 are separated, so that the restriction of the slider 10 on the pull rope 9 is released. At this time, the torsion spring in the torsion spring box 12 will drive the protection frame 6 to rotate, so that the ends of the two protection frames 6 are fitted together. At this time, the operator can observe through the observation window part of the protection frame 6. When the rubber ring is broken, the protection frame 6 will also protect the rubber ring, so that the rubber ring cannot break through the protection frame 6 to the operator, effectively reducing the probability of the rubber ring breaking to the operator when it is broken.

[0041] During the process of resetting the pull rod 2, the transmission block 11 will conflict with the slider 10, causing the slider 10 to start sliding, thereby causing the slider 10 to apply pressure to the protection frame 6 through the pull rope 9, causing the protection frame 6 to start rotating. At this time, the torsion spring in the torsion spring box 12 will gradually begin to shrink. When the pull rod 2 is completely reset, the protection frame 6 will be unfolded, thereby ensuring that the subsequent operator can continue to place the rubber ring, so that the device has a protective effect. At the same time, the device, without adding a driving electrical appliance, realizes that the protection frame 6 will automatically unfold and close with the movement of the pull rod 2.

[0042] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A rubber ring tensile test device, comprising a test bench (1), a pull rod (2) and a pull shaft (3), wherein a driver for driving the pull shaft (3) is installed on the test bench (1), characterized in that: Two groups of mounting frames (5) are installed on the outer wall of the test bench (1), and protective frames (6) are rotatably installed at the ends of the two groups of mounting frames (5) for protection, and the protective frames (6) are designed as arc-shaped plates. After the two groups of protective frames (6) are rotated, the ends will stick to each other, so as to shield the pull rod (2) and the pull shaft (3); The test bench (1) is provided with a plurality of drive components for driving the protection frame (6) to rotate, and a torsion spring box (12) corresponding to the protection frame (6) is installed on the side wall of the mounting frame (5).

2. A rubber ring tensile testing device according to claim 1, characterized in that: The outer wall of the pull shaft (3) is provided with a limiting groove (4), and the cross section of the limiting groove (4) is designed to be V-shaped.

3. A rubber ring tensile testing device according to claim 1, characterized in that: The protection frame (6) is composed of a frame and an observation window, and buffer pads are provided at the ends of the two protection frames (6).

4. A rubber ring tensile testing device according to claim 1, characterized in that: The driving assembly is composed of a pull block (7), a pull ring (8), a pull rope (9), a slider (10) and a transmission block (11); two groups of pull rings (8) are symmetrically installed on the outer wall of the protection frame (6); and the outer walls of the two groups of pull rings (8) are both slidably installed with pull blocks (7), and the outer walls of the pull blocks (7) are installed with pull ropes (9).

5. A rubber ring tensile testing device according to claim 4, characterized in that: The slider (10) is slidably mounted inside the outer wall of the mounting frame (5) close to the pull rod (2), one end of the slider (10) is connected to the pull rope (9), and the other end of the slider (10) protrudes out of the mounting frame (5) and is located outside the test bench (1).

6. A rubber ring tensile testing device according to claim 5, characterized in that: Two transmission blocks (11) are symmetrically mounted on the outer walls of both sides of the pull rod (2), and the ends of the transmission blocks (11) and the ends of the sliders (10) are located on a vertical line, and the distance between the two ends of the transmission blocks (11) is greater than the distance between the two ends of the sliders (10).

7. A rubber ring tensile testing device according to claim 4, characterized in that: Two torsion spring boxes (12) are symmetrically mounted on the outer walls of both sides of the mounting frame (5), and the torsion spring boxes (12) are composed of a shell and a torsion spring, wherein the torsion spring is fixedly connected to the rotating shaft of the protection frame (6).

8. A rubber ring tensile testing device according to claim 7, characterized in that: The distance between the torsion spring boxes (12) on the outer walls of the two groups of mounting frames (5) is greater than the distance between the ends of the two transmission blocks (11).

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