Linear tension test device

Abstract

The utility model discloses a linear tension test device which comprises a tension transmission assembly, a force application assembly and a power assembly which are sequentially arranged on a test bed, the tension transmission assembly comprises a slidable guide seat arranged on the test bed, and a connecting rod is arranged on the guide seat; the force application assembly comprises at least two elastic force application cylinders, each elastic force application cylinder comprises a sleeve, an abutting ring is arranged at one end of each sleeve, two force application lug plates are arranged at the other end of each sleeve, and a pull rod is embedded in each sleeve; one end of the pull rod penetrates through the abutting ring and is provided with a pull ring, the other end of the pull rod is provided with a lock rod, and a spring is nested on the pull rod; the force application lug plate of the elastic force application cylinder on the front side is movably connected with the pull rod of the elastic force application cylinder on the rear side through a pin shaft I, the pull rod of the elastic force application cylinder on the foremost side is movably connected with the connecting rod, and the force application lug plate of the elastic force application cylinder on the rearmost side is movably connected with the power assembly; the device has the advantages of small test error, simple structure, flexibility and convenience in use, high adaptability and the like.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology, specifically a linear tensile testing device. Background Technology

[0002] A tensile testing machine, also known as a tensile testing machine, is a mechanical force-applying testing device used to test the tensile mechanical properties of test objects. Currently, most existing tensile testing devices use a hydraulic cylinder as the power component, and the piston rod of the hydraulic cylinder directly acts on the test object to perform the tensile test. For example, a tensile testing device disclosed in patent publication number CN221078277U applies tensile force to the object through a clamping mechanism connected to the piston rod of the hydraulic cylinder. However, during the tensile process of the hydraulic cylinder, the tensile force is mostly nonlinear, and it cannot provide the required stable linear tensile force during the tensile test. This results in problems such as large test errors, complex structure, and inconvenient disassembly and assembly. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a linear tensile testing device with small test error, high test data accuracy, simple structure, convenient assembly and disassembly, adaptability to different test objects, flexible and convenient use, wide application range, and strong adaptability, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a linear tensile testing device, comprising a tensile transmission component, a force application component, and a power component arranged sequentially along the length of a test platform. A fixing seat for fixing the tensile test object is also provided on the test platform at the position corresponding to the tensile transmission component. The tensile transmission component includes a guide seat on the test platform that can slide along its length, and a connecting rod arranged along the length of the test platform on the guide seat. Both ends of the connecting rod are provided with forks. The force application component includes at least two elastic force application cylinders, each elastic force application cylinder including a sleeve. An abutment ring is provided on the inner wall of one end of the sleeve, and the other end of the sleeve... Two force-applying lugs are symmetrically arranged on the end face of the sleeve. A pull rod adapted to the inner diameter of the abutment ring is slidably nested inside the sleeve. One end of the pull rod passes through the abutment ring and is provided with a pull ring. The other end of the pull rod is provided with a locking rod. A spring is nested in the part of the pull rod located between the abutment ring and the locking rod. The force-applying lug of the front elastic force-applying cylinder is movably connected to the pull rod of the rear elastic force-applying cylinder by a pin. The pull rod of the frontmost elastic force-applying cylinder is movably connected to the fork at the rear end of the connecting rod by a pin. The force-applying lug of the rearmost elastic force-applying cylinder is movably connected to the power assembly by a pin. The power assembly is used to apply a pulling force to the force-applying assembly in a direction away from the fixed seat.

[0005] Furthermore, the spring forces within each elastic force-applying cylinder of the force-applying component are different.

[0006] Furthermore, the power assembly includes a double-ear hinge support on the test bench, a telescopic cylinder is movably connected to the double-ear hinge support via a pin four, and a joint bearing is provided in the hinge ear plate of the telescopic cylinder. The telescopic cylinder is provided with a piston rod, and a pull ring is provided at the telescopic end of the piston rod. The elastic force-applying cylinder located on the rear side has its force-applying ear plate movably connected to the pull ring of the piston rod via a pin three.

[0007] Furthermore, the guide seat includes a base on the test bench, the top surface of the base has a semi-circular groove that matches the outer diameter of the connecting rod, the upper end of the base is fixedly connected to a top cover by bolts, the bottom surface of the top cover also has a semi-circular groove that matches the outer diameter of the connecting rod, and the connecting rod is set in the circular hole formed by the base and the top cover; a linear slide rail is provided on the test bench at the position of the guide seat, and the base is slidably connected to the linear slide rail by a slider.

[0008] Furthermore, the sleeve has a rectangular notch on one end face of the corresponding locking rod along its axial direction. The length of the locking rod is greater than the inner diameter of the sleeve, and the outer diameter of the locking rod is adapted to the width of the rectangular notch.

[0009] Furthermore, the test bench is bolted to a mounting plate, and the power assembly, force application assembly, and tension transmission assembly are all fixedly mounted on the mounting plate of the test bench.

[0010] Furthermore, the test bench has a box structure, with a cabinet door on the front side, fixed feet at the bottom, and a control panel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: In this linear tensile testing device, the tensile force generated by the power component applies pressure to the force application component, and sequentially pulls the elastic force application cylinders with weaker spring elasticity. Through the multiple elastic force application cylinders of the force application component, the nonlinear tensile force generated by the power component is transformed into a linear tensile force, and the transformed linear tensile force is transmitted to the tensile test object to perform a tensile test, thereby reducing test errors and improving the accuracy of test data. The elastic force application cylinders of the force application component, the force application component and the power component, and the force application component and the tensile transmission component are all connected by quick-release pins, which is simple in structure, easy to disassemble and assemble, and can be adapted to different test objects by increasing or decreasing the number of elastic force application cylinders. It is flexible and convenient to use, has a wide range of applications, and strong adaptability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the force-applying component structure of this utility model;

[0014] Figure 3This is a schematic diagram of the elastic force-applying cylinder structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the sleeve structure of this utility model;

[0016] Figure 5 This is a cross-sectional view of the elastic force-applying cylinder of this utility model;

[0017] Figure 6 This is a schematic diagram of the tensile force transmission component of this utility model;

[0018] Figure 7 This is an exploded schematic diagram of the force transmission component of this utility model;

[0019] Figure 8 This is a schematic diagram of the power component structure of this utility model.

[0020] In the diagram: 1. Test bench; 11. Mounting plate; 12. Cabinet door; 13. Fixed foot; 14. Control panel; 2. Fixed base; 3. Power assembly; 31. Double-ear hinge support; 32. Telescopic cylinder; 33. Piston rod; 34. Spherical bearing; 4. Force application assembly; 41. Elastic force application cylinder; 411. Sleeve; 412. Pull rod; 413. Locking rod; 414. Spring; 415. Force application ear plate; 416. Pin one; 417. Rectangular notch; 418. Abutment ring; 5. Tension transmission assembly; 51. Guide seat; 511. Base; 512. Top cover; 52. Connecting rod; 521. Fork; 522. Pin two; 53. Linear slide rail; 54. Slider. Detailed Implementation

[0021] 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. Example

[0022] Please see Figure 1-8 This utility model provides a technical solution: a linear tensile testing device, including a tensile transmission component 5, a force application component 4 and a power component 3 arranged sequentially along the length of the test bench 1. The test bench 1 is also provided with a fixing seat 2 for fixing the tensile test object at the position corresponding to the tensile transmission component 5. The test bench 1 is a box structure, and the front side of the test bench 1 is provided with a cabinet door 12. The bottom end of the test bench 1 is provided with a fixing foot 13. The test bench 1 is also provided with a control panel 14.

[0023] The tensile force transmission assembly 5 includes a guide seat 51 that can slide along its length on a test bench 1. The guide seat 51 includes a base 511 on the test bench 1. The top surface of the base 511 has a semi-circular groove that matches the outer diameter of the connecting rod 52. The upper end of the base 511 is fixedly connected to a top cover 512 by bolts. The bottom surface of the top cover 512 also has a semi-circular groove that matches the outer diameter of the connecting rod 52. A horizontally arranged connecting rod 52 is provided in the circular hole formed by the base 511 and the top cover 512. Both ends of the connecting rod 52 are provided with forks 521. A linear slide rail 53 is provided on the test bench 1 at the position of the guide seat 51. The base 511 is slidably connected to the linear slide rail 53 by a slider 54.

[0024] The force-applying component 4 includes at least two elastic force-applying cylinders 41. Each elastic force-applying cylinder 41 includes a sleeve 411. An abutment ring 418 is provided on the inner wall of one end of the sleeve 411. Two force-applying lugs 415 are symmetrically provided on the end face of the other end of the sleeve 411. A pull rod 412, adapted to the inner diameter of the abutment ring 418, is slidably nested inside the sleeve 411. One end of the pull rod 412 passes through the abutment ring 418 and is provided with a pull ring. The other end of the pull rod 412 is provided with a locking rod 413. A spring 414 is nested in the part between the abutment ring 418 and the locking rod 413 on the 12, and the elastic force of the spring 414 in each elastic force cylinder 41 of the force application component 4 is different; the force application ear plate 415 of the front elastic force cylinder 41 and the pull rod 412 of the rear elastic force cylinder 41 are movably connected by a first pin 416, and the pull rod 412 of the frontmost elastic force cylinder 41 is movably connected to the fork 521 at the rear end of the connecting rod 52 by a second pin 522;

[0025] In this embodiment, the force application component 4 is composed of three elastic force application cylinders 41 of different sizes, and the elasticity of the springs 414 inside the elastic force application cylinders 41 decreases sequentially from front to back.

[0026] The power assembly 3 is used to apply a pulling force to the force application assembly 4 in a direction away from the fixed seat 2. The power assembly 3 includes a double-ear hinge support 31 provided on the test bench 1. The double-ear hinge support 31 is movably connected to a telescopic cylinder 32 through a pin shaft four. The telescopic cylinder 32 has a joint bearing 34 in its hinge ear plate. The telescopic cylinder 32 is provided with a piston rod 33. The telescopic end of the piston rod 33 is provided with a pull ring. The elastic force application cylinder 41 located on the rear side has a force application ear plate 415 that is movably connected to the pull ring of the piston rod 33 through a pin shaft three.

[0027] Working principle:

[0028] The test object is fixed on the fixed base 2, and the pulling end of the test object is fixedly connected to the fork 521 at the front end of the connecting rod 52. The control power assembly 3 is operated through the control panel 14 to cause the piston rod 33 of the telescopic cylinder 32 to retract and apply a pulling force to the force application assembly 4. The piston rod 33 applies a pulling force to the sleeve 411 of the elastic force application cylinder 41 located at the rear end. The sleeve 411 compresses the spring 414 inside it until the spring 414 is compressed to the limit position. Then, the elastic force application cylinder 41 applies a pulling force to the elastic force application cylinder 41 at the front end through the rear end until the spring 414 of the elastic force application cylinder 41 is compressed to the limit position. The pulling force is then transmitted to the elastic force application cylinder 41 at the front end. The linear pulling force is transmitted to the connecting rod 52 through the pull rod 412 of the elastic force application cylinder 41. Finally, the pulling force is applied to the test object through the connecting rod 52, and the guide seat 51 can slide along the linear slide rail 53, thereby completing the linear pulling force detection of the test object.

[0029] Furthermore, the sleeve 411 has a rectangular notch 417 on one end face of the corresponding locking rod 413 along its axial direction. The length of the locking rod 413 is greater than the inner diameter of the sleeve 411, and the outer diameter of the locking rod 413 is adapted to the width of the rectangular notch 417. The locking rod 413 is nested in the rectangular notch 417, and the rectangular notch 417 plays a role in limiting and guiding the movement of the locking rod 413.

[0030] Furthermore, the test bench 1 is bolted to a mounting plate 11, and the power component 3, the force application component 4, and the tension transmission component 5 are all fixedly mounted on the mounting plate 11 of the test bench 1. By disassembling the mounting plate 11, the power component 3, the force application component 4, and the tension transmission component 5 can be quickly disassembled from the test bench 1, which facilitates the disassembly and maintenance of the power component 3, the force application component 4, and the tension transmission component 5.

[0031] The linear tensile testing device disclosed in this embodiment uses the tension generated by the power component 3 to apply pressure to the force application component 4, and sequentially pulls the less elastic elastic force application cylinders 41 of the spring 414. Through the multiple elastic force application cylinders 41 of the force application component 4, the nonlinear tension generated by the power component 3 is converted into a linear tension, and the converted linear tension is transmitted to the tension transmission component 5 to perform a tensile test on the tensile test object, thereby reducing test errors and improving the accuracy of test data. The elastic force application cylinders 41 of the force application component 4 are connected to each other, the force application component 4 is connected to the power component 3, and the force application component 4 is connected to the tension transmission component 5 through quick-release pins. The structure is simple, the disassembly and assembly are convenient, and the number of elastic force application cylinders 41 can be increased or decreased to adapt to different test objects. It is flexible and convenient to use, has a wide range of applications, and is highly adaptable.

[0032] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A linear tensile testing device, comprising a tensile transmission component, a force application component, and a power component arranged sequentially along the length of the test platform, wherein a fixing seat for fixing the tensile test object is also provided on the test platform at the position corresponding to the tensile transmission component, characterized in that: The force transmission assembly includes a guide seat on the test bench that can slide along its length, a connecting rod on the guide seat that is arranged along the length of the test bench, and a fork at both ends of the connecting rod; the force application assembly includes at least two elastic force application cylinders, each elastic force application cylinder including a sleeve, an abutment ring on the inner wall of one end of the sleeve, and two force application lugs symmetrically arranged on the end face of the other end of the sleeve, with a pull rod slidably nested inside the sleeve that is adapted to the inner diameter of the abutment ring; one end of the pull rod passes through the abutment ring and is provided with a pull ring, and the other end of the pull rod is provided with a locking rod, with a spring nested in the part of the pull rod located between the abutment ring and the locking rod; the force application lug of the front elastic force application cylinder is movably connected to the pull rod of the rear elastic force application cylinder by a pin, and the pull rod of the frontmost elastic force application cylinder is movably connected to the fork at the rear end of the connecting rod by a pin, and the force application lug of the rearmost elastic force application cylinder is movably connected to the power assembly by a pin; the power assembly is used to apply a pulling force to the force application assembly in a direction away from the fixed seat.

2. The linear tensile testing device according to claim 1, characterized in that: The spring forces inside the various elastic force-applying cylinders of the force-applying component are different.

3. The linear tensile testing device according to claim 1, characterized in that: The power assembly includes a double-eared hinge support on the test bench. The double-eared hinge support is movably connected to a telescopic cylinder via a pin four. The telescopic cylinder has a joint bearing inside its hinge plate. The telescopic cylinder has a piston rod, and the telescopic end of the piston rod has a pull ring. The elastic force-applying cylinder located at the rear end has its force-applying plate movably connected to the pull ring of the piston rod via a pin three.

4. The linear tensile testing device according to claim 1, characterized in that: The guide seat includes a base on the test bench. The top surface of the base has a semi-circular groove that matches the outer diameter of the connecting rod. The upper end of the base is fixedly connected to a top cover by bolts. The bottom surface of the top cover also has a semi-circular groove that matches the outer diameter of the connecting rod. The connecting rod is set in the circular hole formed by the base and the top cover. A linear slide rail is provided on the test bench at the position of the guide seat. The base is slidably connected to the linear slide rail by a slider.

5. A linear tensile testing device according to claim 1, characterized in that: The sleeve has a rectangular notch on one end face of the corresponding locking rod along its axial direction. The length of the locking rod is greater than the inner diameter of the sleeve, and the outer diameter of the locking rod is matched with the width of the rectangular notch.

6. The linear tensile testing device according to claim 1, characterized in that: The test bench is bolted to a mounting plate, and the power assembly, force application assembly, and tension transmission assembly are all fixedly mounted on the mounting plate of the test bench.

7. The linear tensile testing device according to claim 1, characterized in that: The test bench has a box-like structure, with a cabinet door on the front and fixed feet at the bottom. A control panel is also provided on the test bench.

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