Tension testing instrument

Abstract

The utility model provides a tension test instrument, which is used for testing a to-be-tested piece and comprises a base, a moving mechanism and a driving assembly, the moving mechanism comprises a lead screw perpendicular to the base and a nut arranged on the lead screw in a sleeving manner, the nut slides along the lead screw when the lead screw rotates, and the driving assembly comprises a driving motor and a synchronizing assembly. The driving motor is fixedly connected with the base, the synchronizing assembly comprises a first synchronizing wheel and a second synchronizing wheel, the first synchronizing wheel is connected with an output shaft of the driving motor, the lead screw is sleeved with the second synchronizing wheel, the first synchronizing wheel is connected with the second synchronizing wheel through a synchronizing belt, and the second synchronizing wheel rotates along with rotation of the first synchronizing wheel. The second synchronizing wheel drives the lead screw to rotate. The clamping assembly comprises a first clamping device and a second clamping device, the first clamping device is fixedly connected with the nut, the second clamping device is installed on the base, and the first clamping device and the second clamping device clamp the two ends of the to-be-tested piece respectively.

Description

Technical Field

[0001] This invention relates to the field of mechanical measurement, and in particular to a tensile testing instrument. Background Technology

[0002] Currently, many steel components require tensile testing before or during production to determine their tensile strength. Existing tensile testing machines are often only capable of testing components with relatively low tensile strength, such as ropes. When testing steel components, the provided tensile strength is insufficient, often requiring a drive motor with greater traction force, which significantly increases manufacturing costs.

[0003] At the same time, the use of high-power motors for direct drive places higher demands on the motor's installation location and on the equipment's structural design.

[0004] In view of this, it is indeed necessary to provide a tensile testing instrument to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a tensile testing instrument that can control the heating unit in zones.

[0006] To achieve the above objectives, this utility model provides a tensile testing instrument for testing a workpiece, comprising: a base, a moving mechanism, the moving mechanism including a lead screw perpendicular to the base and a nut sleeved on the lead screw, wherein the nut slides along the lead screw when the lead screw rotates, and a driving assembly including a drive motor and a synchronization component. The drive motor is fixedly connected to the base, and the synchronization component includes a first synchronization wheel and a second synchronization wheel. The first synchronization wheel is connected to the output shaft of the drive motor, and the second synchronization wheel is sleeved on the lead screw. The first synchronization wheel and the second synchronization wheel are connected by a timing belt, and the second synchronization wheel rotates with the rotation of the first synchronization wheel, thereby driving the lead screw to rotate.

[0007] As a further improvement of this utility model, the tensile testing instrument also includes a guide post and a connector. The guide post is parallel to the lead screw, and the connector is provided with a first through hole and a second through hole. The guide post passes through the first through hole, and the nut is embedded in the second through hole and fixedly connected to the second through hole. The connector slides relative to the lead screw with the nut.

[0008] As a further improvement of this utility model, it also includes a housing and an accordion cover. The housing is fixedly connected to the base. The lead screw and the guide column are both located inside the housing. The housing is rectangular with an opening on one side, and the accordion cover covers the opening.

[0009] As a further improvement of this utility model, it also includes a clamping assembly, which includes a first clamping device and a second clamping device. The first clamping device is fixedly connected to the connector, and the second clamping device is mounted on the base. The first clamping device and the second clamping device respectively clamp the two ends of the workpiece to be tested.

[0010] As a further improvement of this utility model, the connecting part is located inside the box, the connecting part penetrates the bellows cover, and the connecting part is also provided with a slot, through which the first clamping device passes and is fixedly connected to the connecting part.

[0011] As a further improvement of this utility model, both the first clamping device and the second clamping device include a cylinder compression device. The cylinder compression device includes a pneumatic component and a compression component. The compression component includes a fixed part and a movable part. A clamping position is formed between the fixed part and the movable part. The movable part is connected to the pneumatic component through a set screw. The pneumatic component pushes the movable part closer to the fixed part through the set screw to clamp the test piece. The pneumatic component pulls the movable part away from the fixed part through the set screw to release the test piece.

[0012] As a further improvement of this utility model, the first clamping device further includes a tension sensor, the fixing part is connected to the tension sensor through a connecting bolt, and the tension sensor is fixedly connected to the connecting member.

[0013] As a further improvement of this utility model, the base is provided with a control device, which includes a control joystick and a selection button. By pressing the selection button, the first clamping device or the second clamping device can be selected for control. The joystick is configured to control the first clamping device / second clamping device to clamp / release the test piece.

[0014] As a further improvement of this utility model, the drive motor is provided with a control lever, which controls the rotation of the drive motor to drive the nut to slide along the lead screw.

[0015] As a further improvement of this utility model, the base has a mounting position on the side facing away from the box, and the first synchronous pulley, the second synchronous pulley and the synchronous belt are installed in the mounting position.

[0016] In summary, the tensile testing instrument of the present invention, by employing a nut sliding relative to a lead screw and using a synchronization component, requires only a low-power drive motor to drive the nut to slide a relatively heavy load along the lead screw, effectively reducing the cost of the tensile testing instrument. Furthermore, the use of a lead screw and nut transmission method gives the structure a high load capacity, enabling it to adapt to test pieces of varying weights, thus improving the versatility and applicability of the tensile testing instrument. Attached Figure Description

[0017] The above-described technical content of the present invention and the following detailed embodiments will be better understood when read in conjunction with the accompanying drawings. It should be noted that the drawings are merely examples of the claimed technical solutions. In the drawings, the same reference numerals represent the same or similar elements.

[0018] Figure 1 This is a three-dimensional structural diagram of a tensile testing instrument according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the tensile testing instrument.

[0020] Figure 3 yes Figure 1 The image shows a bottom view of the tensile testing instrument.

[0021] Figure 4 yes Figure 1 The diagram shows a three-dimensional structure of the cylinder compression device in the tensile testing instrument.

[0022] Figure 5 yes Figure 1 The diagram shows a three-dimensional structure of the connector in the tensile testing instrument.

[0023] The reference numerals in the attached figures are explained as follows:

[0024] Tensile testing instrument, 110-base, 111-mounting position, 120-moving mechanism, 121-lead screw, 122-nut, 130-drive assembly, 131-drive motor, 132-first synchronous pulley, 133-second synchronous pulley, 140-guide post, 150-connector, 151-first through hole, 152-second through hole, 153-slot, 160-clamping assembly, 161-first clamping device, 162-second clamping device, 170-cylinder compression device, 171-pneumatic component, 172-compression component, 1721-fixed part, 1722-moving part, 1723-clamping position, 180-box, 181-slot, 182-bellows protective cover, 190-control device, 191-first selection button, 192-second selection button, 193-remote lever. Detailed Implementation

[0025] The following detailed description of the features and advantages of the present invention is sufficient to enable those skilled in the art to understand the technical content of the present invention and to implement it accordingly. Furthermore, based on this specification, claims, and drawings, those skilled in the art can easily understand the related objectives and advantages of the present invention.

[0026] The terminology and expressions used herein are for descriptive purposes only, and the invention should not be limited to these terms and expressions. The use of these terms and expressions does not imply the exclusion of any illustrative and descriptive equivalents (or parts thereof), and it should be recognized that various modifications that may exist should also be included within the scope of the claims. Other modifications, variations, and substitutions may also exist. Accordingly, the claims should be considered to cover all such equivalents.

[0027] Please see Figures 1-5 As shown, this utility model provides a tensile testing instrument 100, which is mainly used to measure the tensile force of steel strip-shaped fittings. Of course, it can also be used to measure the tensile force of other sheet-shaped fittings.

[0028] The tensile testing instrument 100 includes a base 110 and a moving mechanism 120. The moving mechanism 120 includes a lead screw 121 perpendicular to the base 110 and a nut 122 sleeved on the lead screw 121. When the lead screw 121 rotates, the nut 122 can slide along the lead screw 121. The tensile testing instrument 100 also includes a drive assembly 130 and a synchronization assembly. The drive assembly 130 includes a drive motor 131 and a synchronization pulley. The drive motor 131 is fixedly connected to the base 110. The synchronization assembly includes a first synchronization pulley 132 and a second synchronization pulley 133. The first synchronization pulley 132 and the second synchronization pulley 133 are connected by a timing belt. A first synchronous pulley 132 is connected to the output shaft of the drive motor 131 and rotates with the output shaft of the drive motor 131. A second synchronous pulley 133 is sleeved on the lead screw 121. The first synchronous pulley 132 drives the second synchronous pulley 133 to rotate through the synchronous belt. The second synchronous pulley 133 drives the lead screw 121 to rotate. Both the first synchronous pulley 132 and the second synchronous pulley 133 are installed in the base 110. The lead screw 121 is driven to rotate through the synchronous assembly. Only a relatively low-power drive motor 131 is needed to drive the nut 122 to slide along the lead screw 121 with a relatively large load, which effectively reduces the cost of the tensile testing instrument 100.

[0029] In some embodiments, the device further includes a guide post 140 and a connector 150. The guide post 140 is parallel to the lead screw 121. The connector 150 has a first through hole 151 and a second through hole 152. The guide post 140 passes through the first through hole 151, and the nut 122 is embedded in the second through hole 152 and fixedly connected to the second through hole 152. When the nut 122 slides along the lead screw 121, it is easy to cause offset and wobbling in the radial direction of the lead screw 121. By using the guide post 140, the nut 122 is connected to the guide post 140 through the connector 150. This ensures that the nut 122 will not wobble in the radial direction of the lead screw 121 when it slides along the lead screw 121, thus ensuring the stability of the tensile testing instrument 100 when testing the tensile force of the test piece. The overall structure is also relatively simple, easier and faster to assemble, and durable.

[0030] In this embodiment, the tensile testing instrument 100 also includes a housing 180 and a bellows cover 182. The housing 180 is fixedly connected to the base 110. The lead screw 121 and the guide column 140 are both located inside the housing 180. The housing 180 is rectangular with an opening on one side. The bellows cover 182 covers the opening, forming a relatively sealed space between the housing 180 and the bellows cover 182. This protects the lead screw 121 and nut 122 in the moving mechanism 120, as well as the guide column 140 and other structural components, from being affected or contaminated by external dust and debris. This effectively extends the service life of the tensile testing instrument 100 and reduces the frequency of maintenance.

[0031] In this embodiment, the tensile testing instrument 100 further includes a clamping assembly 160, which includes a first clamping device 161 and a second clamping device 162. The first clamping device 161 is fixedly connected to the connector 150, and the second clamping device 162 is mounted on the base 110. The first clamping device 161 and the second clamping device 162 respectively clamp the workpiece to be tested. The first clamping device 161 is moved along the axial direction of the lead screw 121 by the connector 150 to realize the detection of the tensile force of the workpiece to be tested. The operation is convenient. The first clamping device 161 and the second clamping device 162 can be finely adjusted according to the structure of the workpiece to be tested to adapt to workpieces of different specifications or shapes.

[0032] In this embodiment, the connector 150 penetrates the bellows cover 182, and the connector 150 is also provided with a slot 153. The first clamping device 161 passes through the slot 153 and is fixedly connected to the connector 150. Since the connector 150 passes through the bellows cover 182, the bellows cover 182 can always cover the housing 180 when the connector 150 drives the first clamping device 161 to slide. The structural design of the bellows cover 182 ensures that it remains stable during operation with the connector 150, and will not shift or deform due to high-speed movement or external impact. The bellows cover 182 has good extensibility and can adapt to different stroke length requirements. When the first clamping device 161 slides a long distance, the bellows cover 182 can be fully extended; and when the clamping device stops or is in short-stroke operation, the bellows cover 182 can be tightly folded without affecting normal operation.

[0033] In this embodiment, both the first clamping device 161 and the second clamping device 162 include a cylinder compression device 170. The cylinder compression device 170 includes a pneumatic component 171 and a compression component 172. The compression component 172 includes a fixed part 1721 and a moving part 1722. A clamping position is formed between the fixed part 1721 and the moving part 1722. Both ends of the workpiece to be tested are clamped by the clamping positions of the first clamping device 161 and the second clamping device 162, respectively. The moving part 1722 is connected to the pneumatic component 171 via a set screw. The pneumatic component pushes the moving part 1722 toward the fixed part 1721 via the set screw to clamp the workpiece to be tested. The pneumatic component 171 pulls the moving part 1722 away from the fixed part 1721 via the set screw to release the workpiece to be tested. The pneumatic control method makes the clamping and releasing operations simple and quick. Only the air supply to the pneumatic component 171 needs to be controlled to achieve the clamping or releasing action, without the need for complex mechanical operations, reducing the difficulty of operation and labor intensity.

[0034] In this embodiment, the first clamping device 161 also includes a tension sensor. The fixing part 1721 is connected to the tension sensor through a connecting bolt. The tension sensor is fixedly connected to the connecting piece 150. Through the tension sensor, the tension value of the workpiece under test can be accurately measured, and high-precision measurement results can be provided. Secondly, the tension sensor has a fast response speed and can monitor the force on the workpiece under test in real time, which is especially important for detection or processing processes that require rapid feedback and adjustment.

[0035] In this embodiment, a control device 190 is also provided on the base 110. The control device 190 includes a control joystick 193, a first button 191, and a second button 192. Pressing the first button 191 selects to control the first clamping device 161, and pressing the second button 192 selects to control the second clamping device 162. The joystick 193 is configured to control the first clamping device 161 / second clamping device 162 to clamp / release the workpiece under test. By switching the controlled object through the buttons, the operator does not need to frequently adjust the control interface or switch complex control modes. Simply pressing the corresponding button allows for quick selection of the clamping device to be controlled, simplifying the operation process and reducing the difficulty of operation. The control joystick 193 provides an intuitive operating experience. The operator can control the clamping or releasing action of the clamping device by pushing the joystick 193, which conforms to ergonomics and operating habits, making the operation smoother and more natural.

[0036] Furthermore, the first button 191 and the second button 192 are different colors to facilitate operator differentiation and avoid confusion. With clear color markings and intuitive control methods, operators can operate more accurately, reducing the possibility of safety accidents caused by misoperation and improving the overall safety of the system.

[0037] In this embodiment, a joystick is provided on the drive motor 131. The joystick controls the rotation of the drive motor 131 to drive the nut 122 to slide along the lead screw 121. The joystick on the drive motor 131 can conveniently control the rotation of the drive motor 131 to control the first clamping device 161 to move away from the second clamping device 162 to test the tensile force of the test piece, or to control the first clamping device 161 to move towards the second clamping device 162 to return to a suitable position and clamp the test piece.

[0038] Furthermore, on the side of the base 110 facing away from the nut 122, there is a mounting position 111. The first synchronous pulley 132, the second synchronous pulley 133, and the synchronous belt in the synchronous assembly are all installed in the mounting position 111. This makes it very convenient to maintain, repair, and replace these components. The synchronous assembly can be quickly disassembled and replaced without opening the base 110, which improves work efficiency.

[0039] In summary, the tensile testing instrument 100 of this invention, by employing a sliding mechanism of nut 122 relative to lead screw 121, and in conjunction with a synchronization component, requires only a relatively low-power drive motor 131 to drive nut 122 to slide a relatively heavy load along lead screw 121, effectively reducing the cost of the tensile testing instrument 100. Furthermore, the use of a drive mechanism involving lead screw 121 and nut 122 gives the structure a high load capacity, enabling it to adapt to test pieces of varying weights, thus improving the versatility and applicability of the tensile testing instrument 100.

[0040] Similarly, it should be noted that although the present invention has been described with reference to the specific embodiments described above, those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and various equivalent changes or substitutions can be made without departing from the spirit of the present invention. Therefore, any changes or modifications to the above embodiments within the scope of the essential spirit of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A tensile testing instrument for testing a test piece, characterized in that, include: Base, and The moving mechanism includes a lead screw perpendicular to the base and a nut sleeved on the lead screw. When the lead screw rotates, the nut slides along the lead screw. The drive assembly includes a drive motor and a synchronization assembly. The drive motor is fixedly connected to the base. The synchronization assembly includes a first synchronization pulley and a second synchronization pulley. The first synchronization pulley is connected to the output shaft of the drive motor. The second synchronization pulley is sleeved on the lead screw. The first synchronization pulley and the second synchronization pulley are connected by a timing belt. The second synchronization pulley rotates with the rotation of the first synchronization pulley. The second synchronization pulley drives the lead screw to rotate. The clamping assembly includes a first clamping device and a second clamping device. The first clamping device is fixedly connected to the nut, and the second clamping device is mounted on the base. The first clamping device and the second clamping device respectively clamp the two ends of the workpiece to be tested.

2. The tensile testing instrument according to claim 1, characterized in that, The tensile testing instrument also includes a guide post and a connector. The guide post is parallel to the lead screw. The connector has a first through hole and a second through hole. The guide post passes through the first through hole. The nut is embedded in the second through hole and fixedly connected to the second through hole. The first clamping device is fixedly connected to the connector. The connector slides relative to the lead screw with the nut.

3. The tensile testing instrument according to claim 2, characterized in that, The tensile testing instrument also includes a housing and a bellows cover. The housing is fixedly connected to the base. The lead screw and the guide column are both located inside the housing. The housing is rectangular with an opening on one side, and the bellows cover covers the opening.

4. The tensile testing instrument according to claim 3, characterized in that, The connector is located inside the housing and penetrates the bellows cover. The connector also has a slot, through which the first clamping device passes and is fixedly connected to the connector.

5. The tensile testing instrument according to claim 2, characterized in that, Both the first clamping device and the second clamping device include a cylinder compression device. The cylinder compression device includes a pneumatic component and a compression component. The compression component includes a fixed part and a movable part. A clamping position is formed between the fixed part and the movable part. The movable part is connected to the pneumatic component through a set screw. The pneumatic component pushes the movable part closer to the fixed part through the set screw to clamp the test piece. The pneumatic component pulls the movable part away from the fixed part through the set screw to release the test piece.

6. The tensile testing instrument according to claim 5, characterized in that, The first clamping device also includes a tension sensor, and the fixing part is connected to the tension sensor through a connecting bolt. The tension sensor is fixedly connected to the connecting member.

7. The tensile testing instrument according to claim 2, characterized in that, The base is equipped with a control device, which includes a control joystick and a selection button. By pressing the selection button, the user can select to control either the first clamping device or the second clamping device. The joystick is configured to control the first clamping device / second clamping device to clamp / release the test piece.

8. The tensile testing instrument according to claim 1, characterized in that, The drive motor is equipped with a control lever, which controls the rotation of the drive motor to drive the nut to slide along the lead screw.

9. The tensile testing instrument according to claim 3, characterized in that, The base has a mounting position on the side facing away from the housing, where the first synchronous pulley, the second synchronous pulley, and the synchronous belt are installed.

Images