A steel cord press-through test device

Abstract

The utility model provides a kind of cord fabric pressure test device, the lower part of the clamp is provided with compression testing machine platform, the upper part of the clamp is provided with down device, the clamp includes clamp main body, the lower part of the clamp main body is provided with connecting flange, connecting pin passes from the inside of connecting flange, the clamp main body is surrounded with cord fabric, large clamp piece is installed in the both sides of the cord fabric, the large clamp piece is fixed in the clamp main body with cord fabric, small clamp piece is installed in the both sides of the upper side of the cord fabric, the small clamp piece is compacted in the upper side of cord fabric, spring is installed between the large clamp piece and clamp main body, the top of the clamp main body is provided with pressure head, connecting pin passes from the top of pressure head;The utility model can make contrastive analysis to data by a series of standardization test to cord fabric, prevent the risk of structural failure in advance, to reduce the risk of tire burst.

Description

Technical Field

[0001] This utility model relates to the field of steel cord production technology, and in particular to a steel wire cord fabric puncture test device. Background Technology

[0002] Tires directly bear the static weight of a vehicle and the impact forces during driving; their structural strength directly determines the vehicle's handling, safety, and durability. The steel cord ply is the core skeleton structure of the tire, composed of layers of parallel rubber-coated cords. Its main functions include maintaining tire internal pressure, supporting load, transmitting traction and braking force, and ensuring the tire's strength and dimensional stability. As the load-bearing skeleton layer of the tire, the cord ply, together with the rim, forms the tire carcass, bearing the tensile stress generated by internal pressure and the lateral forces during driving, preventing the tire from detaching from the rim. Damage to the cord ply affects the tire's stress balance and strength; therefore, a series of standardized tests are needed to simulate puncture processes under extreme conditions, conduct comparative analyses, and proactively prevent structural failure risks. Summary of the Invention

[0003] The purpose of this invention is to solve the problems existing in the prior art by proposing a steel wire cord fabric puncture test device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A steel wire cord fabric compression test device includes a clamp, a compression testing machine platform below the clamp, and a pressing device above the clamp. The clamp includes a clamp body, a connecting flange below the clamp body, and a connecting pin passing through the inside of the connecting flange. The cord fabric to be tested is arranged along the surface of the clamp body. Large clamping plates for fixing the cord fabric are arranged on both sides of the lower part of the clamp body, and the large clamping plates fix the cord fabric to the clamp body by fasteners. Small clamping plates are installed on the top of the clamp body, and the small clamping plates press the top of the cord fabric tightly by fasteners. A pressure head is arranged on the top of the clamp body, and a connecting pin passes through the top of the pressure head to connect the pressure head to the pressing device. A through rectangular groove is provided on the top of the clamp body to facilitate the compression test of the cord fabric after it is fixed on the clamp body.

[0006] Preferably, fixing grooves are provided on the front and rear sides of the rectangular groove, and the small clips are installed in the fixing grooves by bolts.

[0007] Preferably, the lower part of the clamp body has a rectangular structure and smooth outer surfaces on both sides, and threaded grooves are provided on both sides of the lower part of the clamp body; the bottom of the clamp body is provided with threaded holes to facilitate fixing to the connecting flange with bolts.

[0008] In an even better configuration, both the large and small clamping pieces are fixed to the fixture body using star bolts.

[0009] In a further preferred embodiment, cylindrical grooves are provided on both sides of the lower part of the clamp body, and at least one spring is installed between the large clamping plate and the clamp body, with the spring located inside the cylindrical groove.

[0010] Preferably, the top of the pressure head is connected to the pressing device via a connecting pin.

[0011] More preferably, the bottom of the pressure head is a semi-circular pressure block.

[0012] Preferably, the semi-circular pressure block and the pressure head are detachably installed.

[0013] The beneficial effects of this utility model are as follows: The fixture body is designed to mimic the cross-section of a tire, facilitating the wrapping of the fabric while better reflecting the actual stress conditions. Large side clamps and small top clamps secure the fabric to the fixture body and keep it taut, facilitating puncture tests. The pressure head is a semi-circular block that can be changed in size, allowing for easy replacement of the pressure head as needed for recording test data. This utility model enables a series of standardized tests on the fabric, facilitating comparative analysis, preventing structural failure risks in advance, and reducing the risk of tire blowouts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of a steel wire cord fabric puncture test device according to an embodiment of the present invention;

[0015] Figure 2 for Figure 1 A side view of the steel wire cord fabric indentation test device;

[0016] Figure 3 for Figure 1 A three-dimensional structural diagram of the steel wire cord fabric puncture test device;

[0017] Figure 4 for Figure 1 A schematic diagram of the main body of the clamp of the steel wire cord fabric indentation test device;

[0018] Reference numerals: 1-Connecting flange; 2-Star bolt; 3-Large clamp; 4-Spring; 5-Clamp body; 6-Cloth; 7-Small clamp; 8-Pressure head; 9-Connecting pin. Detailed Implementation

[0019] To provide a better understanding of the purpose, structure, features and functions of this utility model, detailed descriptions are provided below with reference to the embodiments.

[0020] like Figures 1-4The device shown is a steel wire cord fabric compression test device, including a clamp, a compression test platform below the clamp, and a pressing device above the clamp. The clamp includes a clamp body 5, a connecting flange 1 below the clamp body 5, a connecting pin 9 passing through the inside of the connecting flange 1, a cord fabric 6 to be tested along the surface of the clamp body 5, large clamping pieces 3 for fixing the cord fabric 6 on both sides of the lower part of the clamp body 5, the large clamping pieces 3 for fixing the cord fabric 6 to the clamp body 5 by fasteners, small clamping pieces 7 installed on the upper part of the clamp body 5, the small clamping pieces 7 for pressing the upper part of the cord fabric 6 by fasteners, and a pressure head 8 at the top of the clamp body 5, the connecting pin 9 passing through the top of the pressure head 8 to connect the pressure head 8 to the pressing device.

[0021] like Figure 4 As shown, the top of the clamp body 5 has a through rectangular groove. After the fabric 6 is fixed to the clamp body 5, it is convenient for the pressure head 8 to perform a puncture test. Fixing grooves are provided on the front and rear sides of the rectangular groove, and small clamping pieces 7 are installed in the fixing grooves. In this way, the use of two symmetrical small clamping pieces 7 can ensure the stability of the fabric fixation and ensure the test effect. The upper part of the clamp body 5 is arc-shaped to simulate the tire cross section, which facilitates the wrapping installation of the fabric 6 and provides a more realistic stress situation, while avoiding the fabric 6 from breaking after being tightened. The lower part of the clamp body 5 has a rectangular structure and smooth outer surfaces on both sides, which facilitates the installation of the large clamping piece 3 and avoids scratching the fabric 6 after installation. The lower part of the clamp body 5 has threaded grooves and cylindrical grooves on both sides. The threaded grooves facilitate the connection between the large clamping piece 3 and the clamp body 5, and the cylindrical grooves facilitate the installation of the spring 4. The bottom of the clamp body 5 has threaded holes, which facilitates fixing to the connecting flange 1 with bolts.

[0022] The connecting flange 1 is located at the bottom of the fixture body 5. The connecting flange 1 is connected to the fixture body 5 by bolts, and the connecting flange 1 is connected to the compression testing machine platform by connecting pin 9.

[0023] See Figure 1 and Figure 2 The large clamping plate 3 is located on both sides of the clamp body 5. The large clamping plate 3 is connected to the lower two sides of the clamp body 5 by star bolts 2. The large clamping plate 3 can fix the curtain 6 on the clamp body 5 and make the curtain 6 taut, so that the pressure head 8 can carry out the test.

[0024] like Figure 1 As shown, in a preferred embodiment, at least one spring 4 is installed between the large clamping piece 3 and the clamping body 5. The spring 4 is located in the cylindrical groove. The spring 4 can effectively maintain the clamping force of the large clamping piece 3 on the curtain 6, prevent the large clamping piece 3 from loosening, and ensure that the curtain 6 will not shift or shake during the test.

[0025] Referring to Figure 3, the small clip 7 is located at the top of the clamp body 5 and is installed in the fixing groove at the top of the clamp body 5 by the star bolt 2, thereby pressing the middle part of the curtain fabric 6.

[0026] The top of the pressure head 8 is connected to the pressing device via a connecting pin 9. The bottom of the pressure head 8 is a semi-circular pressure block. In a preferred embodiment, the semi-circular pressure block and the pressure head 8 are detachably installed, which allows for easy replacement of pressure blocks of different sizes according to different curtain fabric specifications and different test requirements.

[0027] The star bolt 2 is of model M10*40. Using star bolt 2 can provide higher clamping force and improve anti-slip and anti-loosening performance.

[0028] During the fabric test, the connecting flange 1 below the fixture body 5 is fixed to the compression testing machine platform, with the connecting pin 9 inserted through it to prevent the connecting flange 1 from falling off. The fabric 6 to be tested is laid around the surface of the fixture body 5. First, the star bolt 2 is tightened to clamp one side of the fabric 6 with the large clamping piece 3. Then, the other side of the fabric 6 is stretched and clamped with bolts with the large clamping piece 3 on the other side. Finally, the upper fabric 6 is clamped with the small clamping piece 7. According to the test requirements, a semi-circular pressure head 8 of appropriate size is selected. The connecting pin 9 is inserted into the top of the pressure head 8 and fixed to the pressing device. The pressing device is operated to make the pressure head 8 move downward and press down on the fabric 6 until the fabric 6 is punctured. The stress condition is recorded. Multiple tests are conducted and the experimental data is recorded and analyzed.

[0029] After the pressure test is completed, loosen all star bolts 2, spring 4 pushes open the large clamp 3, and remove the curtain 6. The test is then complete.

[0030] This utility model discloses a steel cord fabric compression test device. The device features a clamp body whose shape simulates a tire cross-section, facilitating the wrapping of the cord fabric and better reflecting the actual stress conditions. Large clamping plates on both sides and a small clamping plate on the top of the clamp body secure the cord fabric to the clamp body and keep it taut for easy compression testing. The pressure head at the top of the clamp body is a semi-circular, interchangeable block, allowing for easy replacement of the pressure head as needed for data recording. This utility model uses star-shaped bolts to fix the clamping plates, providing a high clamping force. The design enhances the aesthetics of the bolts and improves their anti-slip and anti-loosening performance. Furthermore, the star-shaped bolts require specialized tools for installation and removal, increasing the device's safety. Multiple springs are installed between the large clamping plate and the clamping body to prevent loosening and effectively maintain the clamping force on the fabric, ensuring the fabric does not shift or shake during testing, thus guaranteeing accuracy in the fabric test. This invention facilitates a series of standardized tests on the fabric, enabling convenient comparative analysis, early prevention of structural failure risks, and reduction of tire blowout risks.

[0031] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A steel wire cord fabric compression test device, comprising a clamp, a compression testing machine platform disposed below the clamp, and a pressing device disposed above the clamp, characterized in that, The fixture includes a fixture body with a connecting flange at the bottom and a connecting pin passing through the inside of the connecting flange. The curtain to be tested is arranged along the surface of the fixture body. Large clamping plates for fixing the curtain are arranged on both sides of the lower part of the fixture body, and the large clamping plates fix the curtain to the fixture body with fasteners. Small clamping plates are installed on the top of the fixture body, and the small clamping plates press the top of the curtain tightly with fasteners. A pressure head is arranged on the top of the fixture body, and a connecting pin passes through the top of the pressure head to connect the pressure head to the pressing device. A through rectangular groove is provided on the top of the fixture body to facilitate the pressure head to perform a puncture test on the curtain after it is fixed to the fixture body.

2. The steel wire cord fabric puncture test device as described in claim 1, characterized in that, Fixing slots are provided on the front and rear sides of the rectangular groove, and small clips are installed in the fixing slots by bolts.

3. The steel wire cord fabric puncture test device as described in claim 2, characterized in that, The lower part of the fixture body is rectangular and the outer surfaces on both sides are smooth. Threaded grooves are provided on both sides of the lower part of the fixture body. Threaded holes are provided at the bottom of the fixture body to facilitate fixing to the connecting flange with bolts.

4. The steel wire cord fabric puncture test device as described in claim 3, characterized in that, Both the large and small clamping plates are fixed to the fixture body by star bolts.

5. The steel wire cord fabric puncture test device as described in claim 1, characterized in that, The lower two sides of the fixture body are provided with cylindrical grooves, and at least one spring is installed between the large clamping plate and the fixture body, with the spring located inside the cylindrical groove.

6. The steel wire cord fabric puncture test device as described in claim 1, characterized in that, The top of the pressure head is connected to the pressing device via a connecting pin.

7. The steel wire cord fabric puncture test device as described in claim 6, characterized in that, The bottom of the pressure head is a semi-circular pressure block.

8. The steel wire cord fabric puncture test device as described in claim 7, characterized in that, The semi-circular pressure block and pressure head are detachably installed.

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