Zero-phase deformation tensile testing device
By designing a zero-phase deformation tensile testing device, the deformation of waterproof materials under full adhesion conditions is simulated, solving the problem that existing testing methods cannot accurately evaluate the tensile properties of waterproof materials, and realizing precise testing and industrial application.
Patent Information
- Application Number
- CN202421113062.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Existing testing methods cannot simulate the deformation of waterproofing materials under actual building conditions, resulting in inaccurate test results.
A zero-phase deformation tensile testing device was designed. Through structures such as fixed and sliding pads, tension screws and rotating discs, the tensile properties of waterproof materials under full adhesion are simulated. Epoxy resin material and test blocks are used to simulate the actual construction process.
It enables precise testing under full adhesion conditions, allows for intuitive observation of the tensile properties of waterproof materials, is easy to operate, and is suitable for industrial production and promotion.
Smart Images
Figure CN223784152U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of testing equipment for waterproof materials, and in particular to a zero-phase deformation tensile testing device. Background Technology
[0002] The performance of waterproof materials is mainly tested by their durability and tensile properties. During the construction of waterproof membranes and coatings, it is essential to ensure a tight bond between the materials and the substrate to guarantee the waterproofing effect. However, according to the zero-phase deformation principle, the tighter the bond, the easier it is for the material to tear when the building deforms. Currently available testing methods for the tensile properties of materials cannot simulate the deformation of materials under fully bonded conditions in actual building construction. Therefore, this utility model was designed to address this issue by creating a simple testing tool. Utility Model Content
[0003] The purpose of this invention is to provide a zero-phase deformation tensile testing device to address the above-mentioned situation. The device has a very simple structural design and is very convenient to operate, allowing for a very intuitive observation of the tensile properties of waterproof membranes.
[0004] The specific solution of this utility model is: a zero-phase deformation tensile testing device, comprising a base, on which a fixed pad and a sliding pad are arranged opposite each other. The fixed pad is fixedly mounted on the base, and a tensile screw is connected to the side of the sliding pad away from the fixed pad. A screw seat is connected to the tensile screw via a rotating nut, and the screw seat is fixedly mounted on the base. A rotating rod is provided at the outer end of the tensile screw, and the sliding pad moves on the base under the drive of the tensile screw; the fixed pad and The sliding pad is also provided with a first threaded screw and a second threaded screw, and each of the first threaded screws and the second threaded screw is equipped with a locking nut at its upper end. The first threaded screw and the second threaded screw are also respectively fitted with a first pressure strip and a second pressure strip, which can move up and down along the first threaded screw and the second threaded screw, respectively. The fixed pad and the sliding pad are respectively fitted with a first test block and a second test block, which are respectively pressed by the first pressure strip and the second pressure strip, and the inner ends of the first test block and the second test block are zero-phase connected.
[0005] Furthermore, one end of the sliding pad in this invention is provided with an L-shaped end seat, which is rotatably engaged with the end of the tension screw.
[0006] Furthermore, in this utility model, both the first pressure strip and the second pressure strip are long strips. A first threading screw is threaded through each end of the first pressure strip, and a second threading screw is threaded through each end of the second pressure strip. The bottom ends of the first threading screw and the second threading screw are respectively connected to the fixed pad and the sliding pad.
[0007] Furthermore, in this utility model, the bottom surfaces of the first and second pressure strips are each provided with anti-slip patterns.
[0008] Furthermore, the tension screw in this invention is provided with a rotating disk near the rotating rod, which can read the rotation angle. The rotating disk rotates together with the tension screw.
[0009] Furthermore, the upper and lower surfaces of the pedestal described in this utility model are both flat, and mounting holes are drilled on them.
[0010] This invention can achieve practical application and simulate the cracking of waterproof materials under real conditions, conduct tensile and tear tests, and use epoxy resin materials and test blocks to simulate full adhesion. It can accurately and intuitively test the tensile properties of materials, the test method is simple to operate, the system components can be industrially produced and industrialized, and has great practical application and promotion value. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure from the main view direction of this utility model;
[0012] Figure 2 This is a top view structural diagram of this utility model.
[0013] In the figure: 1—first test block, 2—first pressure strip, 3, 6—locking nuts, 4—first threading screw, 5—waterproof coating layer, 7—second pressure strip, 8—second threading screw, 9—second test block, 10—L-shaped end seat, 11—screw seat, 12—rotating wheel, 13—rotating rod, 14—tension screw, 15—sliding pad, 16—platform, 17—fixed pad. Detailed Implementation
[0014] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0015] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0016] See Figures 1-2This invention relates to a zero-phase deformation tensile testing device, comprising a base 16. Furthermore, the upper and lower surfaces of the base are flat and have mounting holes drilled in them, facilitating installation and fixation of the base onto other equipment or a tabletop. A fixed pad 17 and a sliding pad 15 are arranged opposite each other on the base. The fixed pad is fixedly mounted on the base. A tensile screw 14 is connected to the side of the sliding pad away from the fixed pad. Further, one end of the sliding pad has an L-shaped end seat 10, which is rotatably engaged with the end of the tensile screw. A screw seat 11 is connected to the tensile screw via a rotating nut, and the screw seat is fixedly mounted. On the platform, a rotating rod 13 is provided at the outer end of the tension screw. The sliding pad moves on the platform under the drive of the tension screw. The fixed pad and the sliding pad are also provided with a first threading screw 4 and a second threading screw 8, respectively. The upper ends of the first threading screw and the second threading screw are each equipped with locking nuts 3 and 6. The first threading screw and the second threading screw are also respectively fitted with a first pressure strip 2 and a second pressure strip 7. The first pressure strip and the second pressure strip can move up and down along the first threading screw and the second threading screw, respectively. The fixed pad and the sliding pad are respectively fitted with a first test block 1 and a second test block 9. The first test block and the second test block are respectively pressed by the first pressure strip and the second pressure strip. The inner ends of the first test block and the second test block are connected with zero phase. Furthermore, in this invention, both the first and second pressure strips are elongated strips. A first threaded screw is threaded through each end of the first pressure strip, and a second threaded screw is threaded through each end of the second pressure strip. The bottom ends of the first and second threaded screws are respectively connected to a fixed pad and a sliding pad. Furthermore, the bottom surfaces of both the first and second pressure strips are provided with anti-slip patterns.
[0017] Furthermore, in this embodiment, a rotating disk 12 for reading the rotation angle is provided on the tension screw near the rotating rod, and the rotating disk rotates together with the tension screw.
[0018] Zero-phase deformation, also known as zero-elongation fracture, can be expressed as the ratio between the amount of deformation produced when a waterproof material is stretched and the original length involved in the tensile deformation.
[0019] As can be seen from the above description, the greater the elongation of a waterproofing material, the stronger its adaptability to deformation caused by cracks in the building's substrate. In practical applications, more and more high-elongation materials are designed to resist substrate deformation. However, high elongation cannot completely resist the deformation caused by substrate cracking. As described above, when the substrate has no crack width (i.e., no crack), the original length L=0, then ε (elongation) tends to infinity. No material can achieve infinite elongation; theoretically, no material can resist the process of the substrate developing cracks from scratch. In actual waterproofing construction, the material must be tightly bonded to the substrate to ensure its effectiveness. However, excessive adhesion can easily lead to material tearing and waterproofing layer failure when the building deforms.
[0020] Therefore, the tensile strength test of waterproof materials must be conducted under the condition that the material is tightly bonded to the substrate.
[0021] This utility model is a testing tool designed based on the above situation.
[0022] Pressure strip: It has holes on the top, allowing it to slide freely on the screw. It can be used with nuts and metal base to fix cement test blocks.
[0023] Tension screw: Used to drive the displacement of the test block. The pitch of the screw should be as small as possible while ensuring strength.
[0024] Rotating wheel and rotating rod: used to drive the tension screw to rotate; scales need to be marked to record the screw displacement. Screw displacement. , where θ is the rotation angle of the wheel and P is the pitch of the rotating screw.
[0025] According to the formula: ， in Zero-phase deformation, also known as zero-elongation fracture, can be expressed by the formula: ， in elongation; The amount of deformation that occurs when a waterproof material is stretched; The original length that participates in tensile deformation.
[0026] The tensile properties of waterproof materials under full adhesion can be simulated and calculated using the above formula.
[0027] The specific implementation is as follows:
[0028] 1. Mix the epoxy resin AB components in a 2:1 ratio and stir for 1-2 minutes to ensure thorough mixing and reaction.
[0029] 2. Apply a thin, even layer of the mixed epoxy resin to the surfaces of the two test blocks as required. Rotary wheel: used to drive the rotating rod to rotate; first mark and record the screw displacement on the scale.
[0030] 3. Combine the two test blocks at zero phase, apply the waterproof coating to the surface according to the construction steps, and wait for it to solidify (for each material, at least three sets of test blocks should be prepared according to the above requirements).
[0031] 4. Fix both ends of the bonded test block to the two pressure strips, namely the first pressure strip and the second pressure strip.
[0032] 5. Slowly twist the tension screw until the experimental material is torn, record the twisting distance and angle, observe the condition of the test block and record it.
[0033] 6. Repeat the above experiment three times and record the results to statistically analyze the material properties.
[0034] Note: (1) Epoxy resin material must be used for priming standard cement test blocks to ensure the bonding effect of the material. (2) The rotation angle of the tension screw must be accurately recorded to the degree. (3) Epoxy resin material has extremely strong bonding performance. Care should be taken during use to prevent contamination of the tensioning equipment.
[0035] This invention can achieve practical application and simulate the cracking of waterproof materials under real conditions, conduct tensile and tear tests, and use epoxy resin materials and test blocks to simulate full adhesion. It can accurately and intuitively test the tensile properties of materials, the test method is simple to operate, the system components can be industrially produced and industrialized, and has great practical application and promotion value.
Claims
1. A zero-phase deformation tensile testing device, comprising a platform, characterized in that: A fixed pad and a sliding pad are arranged opposite each other on the pedestal. The fixed pad is fixedly mounted on the pedestal. A tension screw is connected to the side of the sliding pad away from the fixed pad. A screw seat is connected to the tension screw via a rotating nut. The screw seat is fixedly mounted on the pedestal. A rotating rod is provided at the outer end of the tension screw. The sliding pad moves on the pedestal under the drive of the tension screw. The fixed pad and the sliding pad are also provided with a first threading screw and a second threading screw, respectively. Each of the first threading screws and the second threading screw is equipped with a locking nut at its upper end. A first pressure strip and a second pressure strip are also threaded through the first threading screw and the second threading screw, respectively. The first pressure strip and the second pressure strip can move up and down along the first threading screw and the second threading screw, respectively. A first test block and a second test block are threaded through the fixed pad and the sliding pad, respectively. The first test block and the second test block are pressed down by the first pressure strip and the second pressure strip, respectively. The inner ends of the first test block and the second test block are zero-phase connected.
2. The zero-phase deformation tensile testing device according to claim 1, characterized in that: One end of the sliding pad is provided with an L-shaped end seat, which is rotatably engaged with the end of the tension screw.
3. The zero-phase deformation tensile testing device according to claim 1, characterized in that: Both the first pressure strip and the second pressure strip are long strips. A first threaded screw is installed at each end of the first pressure strip, and a second threaded screw is installed at each end of the second pressure strip. The bottom ends of the first threaded screw and the second threaded screw are respectively connected to the fixed pad and the sliding pad.
4. A zero-phase deformation tensile testing device according to claim 1 or 3, characterized in that: The bottom surfaces of the first and second pressure strips are each provided with anti-slip patterns.
5. The zero-phase deformation tensile testing device according to claim 1, characterized in that: The tension screw is also provided with a rotating disk near the rotating rod, which can be used to read the rotation angle. The rotating disk rotates together with the tension screw.
6. The zero-phase deformation tensile testing device according to claim 1, characterized in that: The upper and lower surfaces of the pedestal are both flat, and mounting holes are drilled on them.