A tension rod elasticity testing machine

Abstract

The present invention provides a pull rod elasticity testing machine, comprising a workbench, a clamping device, a bracket, a driving device and a detection component, wherein the detection component comprises a pressure sensor and a displacement sensor, one end of the pull rod is fixed on the clamping device, the driving device drives the pressure sensor to press downward on the other end of the pull rod, the pull rod is deformed by force, the driving device drives the pressure sensor to move upward, the pull rod moves upward under the influence of elasticity, the driving device reciprocates to drive the pull rod to perform multiple deformation recovery, after a preset number of deformation tests, the driving device is stopped, the pull rod is removed to detect the deformation of the pull rod, the pressure sensor is used to detect the pressure value, the displacement sensor is used to detect the stroke of the main shaft, the stroke reflects the deformation of the pull rod, and the elastic performance of the pull rod within the load range is detected by simulating actual usage.

Description

Technical Field

[0001] The invention relates to the technical field of material testing, and in particular to a pull rod elasticity testing machine. Technical Background

[0002] When metal tie rods are used, they will be under pressure, and they will be deformed to a certain extent. Within the load range, metal tie rods have a certain elasticity. After deformation, the tie rods can rebound and restore their original shape. When the number of working times of metal tie rods exceeds a certain range, irreversible deformation will occur, that is, metal fatigue will occur. Therefore, in the production and processing process, it is necessary to simulate the actual use of the tie rods and test the elasticity of the tie rods, so as to control the quality of the elastic fatigue of the products. Summary of the invention

[0003] In order to solve the above technical problems, a pull rod elasticity testing machine is provided to simulate the pressure and deformation of the pull rod in actual use.

[0004] A pull rod elasticity testing machine comprises a workbench, a clamping device, a bracket, a driving device and a detection component, wherein the detection component comprises a pressure sensor and a displacement sensor. A clamping device is provided on the left side of the workbench, a bracket is provided on the rear side of the workbench, a driving device is provided at the front end of the bracket, a pressure sensor is provided at the lower end of the main shaft of the driving device, and a displacement sensor is also provided on one side of the main shaft. One end of the pull rod is fixed on the clamping device, and the other end is arranged below the pressure sensor.

[0005] Preferably, the driving device comprises a hydraulic cylinder or a pneumatic cylinder.

[0006] Preferably, the clamping device comprises a hydraulic clamp.

[0007] Preferably, the clamping device includes a base, a gasket, a jacket, a pressure rod, a pressure block and a latch, the base is installed on the left side of the workbench, the base is provided with a mounting groove, the mounting groove is provided with a gasket, the gasket is provided with a pressure block, the pressure block is provided with a fixing groove matching the jacket, the right end of the jacket is provided with a through hole matching the pull rod, the pull rod is embedded in the through hole, the jacket is embedded in the fixing groove, the latch passes through the upper end of the pressure block and the upper end of the jacket in sequence and is embedded in the pull rod or pressed on the pull rod; the pressure rod is fixed to the upper end of the base.

[0008] Preferably, the present invention further comprises a mounting bracket, the driving device is fixed in the mounting bracket, the mounting bracket is fixed to the front end of the bracket, and a guard plate is provided on the right side of the front end of the bracket.

[0009] Preferably, the detection assembly also includes a connecting sleeve, a pressing sleeve, a connecting plate and a protective plate. A thread is provided on the lower side of the main shaft of the driving device. The connecting sleeve is threadedly connected to the main shaft. The connecting plate is installed on one side of the connecting sleeve. The displacement sensor is installed on the connecting plate. The pressure sensor is fixed at the lower end of the connecting sleeve. A pressing sleeve is fixed to the lower end of the pressure sensor. The protective plate is installed at the front end of the connecting sleeve and extends downward.

[0010] Preferably, the displacement sensor comprises a linear displacement sensor, the linear displacement sensor body is fixed to the front end of the bracket, a slide of the linear displacement sensor is fixed to the connecting plate, and the slide is arranged parallel to the main axis of the driving device.

[0011] Preferably, the detection component also includes a guide plate, which is installed on the main shaft, and a downward slide groove is provided on the rear side of the guide plate. A guide guard plate is provided at the front end of the bracket, and a slide rail matching the slide groove is provided on the guide guard plate, and the slide groove can be slidably installed in the slide rail.

[0012] Preferably, a sliding plate is provided on the rear side of the upper end of the workbench, and two sliding grooves are provided on the sliding plate, and the bracket is detachably fixed to the sliding grooves by bolts.

[0013] Preferably, the present invention further comprises a hydraulic device and a control component, wherein the hydraulic device is connected to the driving device, the control component is connected to the hydraulic device, and the pressure sensor and the displacement sensor are electrically connected to the control component.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. One end of the pull rod is fixed on the clamping device, and the driving device drives the pressure sensor to press downward on the other end of the pull rod. The pull rod is deformed by force, and the driving device drives the pressure sensor to move upward. The pull rod moves upward under the influence of elasticity. The driving device reciprocates to drive the pull rod to perform multiple deformation recovery. After a preset number of deformation tests, the driving device is stopped, and the pull rod is removed to detect the deformation of the pull rod. The pressure sensor is used to detect the pressure value, and the displacement sensor is used to detect the stroke of the main shaft. The stroke reflects the deformation of the pull rod, and the elastic performance of the pull rod within the load range is detected by simulating actual use. 2. The sleeve is used to clamp the pull rod, and the pin passes through the upper end of the pressure block and the upper end of the sleeve and is embedded in the pull rod to prevent the pull rod from moving left and right. The pressure block is fixed on the base, thereby clamping the pull rod. The rod is fixed on the clamping device, and the pressure rod is used to increase the supporting strength of the pressure block; 3. A guard plate may be provided on the right side of the front end of the bracket, and the guard plate is used to prevent the pull rod from accidentally popping out and causing harm to personnel; 4. The other end of the pull rod is arranged under the pressure sleeve, and the pressure sleeve is used to apply pressure to the pull rod. The guard plate plays a guiding and positioning role to prevent the pull rod from deviating from the extrusion range of the pressure sleeve; 5. The slide of the linear displacement sensor is fixed on the connecting plate, and the slide is arranged parallel to the main axis of the driving device. The linear displacement sensor is used to convert the linear mechanical displacement of the connecting plate into an electrical signal; 6. A downward slide groove is provided on the rear side of the guide plate, and a guide guard plate is provided on the front end of the bracket. A slide rail matching the slide groove is provided on the guide guard plate, and the main axis of the driving device moves along the direction of the slide groove and the slide rail, thereby improving applicability and improving the reliability of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 is a schematic structural diagram of the clamping device;

[0017] Figure 3 is a schematic diagram of the structure of the detection component;

[0018] Figure 4 is an exploded view of the detection assembly;

[0019] Figure 5 The structural schematic diagram of the workbench is a diagram;

[0020] Figure 6 Schematic diagram of the structure of the bracket.

[0021] Markings in the accompanying drawings: 1-workbench, 2-pull rod, 3-clamping device, 4-bracket, 5-driving device, 6-connecting pipe, 7-hydraulic device, 8-control component, 9-displacement sensor, 10-detection component, 31-base, 32-gasket, 33-pressure block, 34-latch, 35-clamping sleeve, 36-pressure rod, 41-sliding plate, 42-sliding groove, 43-guard plate, 44-guide guard plate, 51-hydraulic cylinder, 52-nut, 53-guide plate, 55-connecting sleeve, 56-pressure sensor, 57-pressure sleeve, 58-connecting plate, 59-protective plate, 60-mounting bracket. Specific embodiments

[0022] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] A tension rod elasticity testing machine, such as Figures 1 to 6 As shown, it includes a workbench 1, a clamping device 3, a bracket 4, a driving device 5 and a detection component 10, the detection component 10 includes a pressure sensor 56 and a displacement sensor 9, the clamping device 3 is provided on the left side of the workbench 1, the bracket 4 is provided on the rear side of the workbench, the driving device 5 is provided at the front end of the bracket 4, the pressure sensor 56 is provided at the lower end of the main shaft of the driving device 5, and the displacement sensor 9 is also provided on one side of the main shaft, one end of the pull rod 2 is fixed on the clamping device 3, and the other end is arranged below the pressure sensor 56. One end of the pull rod is fixed on the clamping device, and the driving device drives the pressure sensor to press downward on the other end of the pull rod. The pull rod is deformed by the force, and the driving device drives the pressure sensor to move upward. The pull rod moves upward due to the elasticity. The driving device reciprocates to drive the pull rod to perform multiple deformation and recovery. After a preset number of deformation tests, the driving device is stopped, and the pull rod is removed to detect the deformation of the pull rod. The pressure sensor is used to detect the pressure value, and the displacement sensor is used to detect the stroke of the main shaft. The stroke reflects the deformation of the pull rod. The elastic performance of the pull rod within the load range is detected by simulating actual usage.

[0024] The driving device 5 may be a hydraulic cylinder 51 or a gas cylinder, wherein the hydraulic cylinder 51 may be an oil cylinder.

[0025] The clamping device 5 may be a hydraulic clamp.

[0026] The clamping device 5 may also be another structure, such as Figure 2As shown: it includes a base 31, a gasket 32, a jacket 35, a pressure rod 36, a pressure block 33 and a pin 34, the base 31 is installed on the left side of the workbench 1, the base 31 is provided with a mounting groove, the mounting groove is provided with a gasket 32, the gasket 32 ​​is provided with a pressure block 36, the pressure block 36 is provided with a fixing groove matching the jacket 35, the right end of the jacket 35 is provided with a through hole matching the pull rod 2, the pull rod 2 is embedded in the through hole, the jacket 35 is embedded in the fixing groove, the pin passes through the upper end of the pressure block 33 and the upper end of the jacket 35 in turn and is embedded in the pull rod or pressed on the pull rod; the pressure rod 36 is fixed to the upper end of the base 31 and pressed on the rear side of the pressure block 33. The sleeve 35 is used to clamp the pull rod 2, and the pin 34 passes through the upper end of the pressure block 33 and the upper end of the sleeve 35 and is embedded in the pull rod 2 to prevent the pull rod 2 from moving left and right. The pressure block 33 is fixed on the base 31, thereby fixing the pull rod on the clamping device, and the pressure rod 36 is used to increase the supporting strength of the pressure block 33.

[0027] The present invention may further include a mounting bracket 60, in which the drive device 5 is fixed, and the mounting bracket 60 is fixed to the front end of the bracket 4. A guard plate 43 may be provided on the right side of the front end of the bracket 4, and the guard plate 43 is used to prevent the pull rod from accidentally popping out and causing damage to personnel.

[0028] like Figure 3 and Figure 4 As shown, the detection assembly 10 may also include a connecting sleeve 55, a pressing sleeve 57, a connecting plate 58 and a protective plate 59. The main shaft of the driving device 5 is provided with threads on the lower side. The connecting sleeve 55 is threadedly connected to the main shaft. The connecting plate 58 is installed on one side of the connecting sleeve 55. The displacement sensor 9 is installed on the connecting plate 58. The pressure sensor 56 is fixed at the lower end of the connecting sleeve 55. The lower end of the pressure sensor 56 is fixed with a pressing sleeve 57. The protective plate 59 is installed at the front end of the connecting sleeve 55 and extends downward. The other end of the pull rod 2 is arranged below the pressing sleeve 57. The pressing sleeve 57 is used to apply pressure to the pull rod. The protective plate 59 plays a guiding and positioning role to prevent the pull rod 2 from deviating from the extrusion range of the pressing sleeve 35.

[0029] The displacement sensor 9 can be a linear displacement sensor, the linear displacement sensor body is fixed to the front end of the bracket 4, the slide of the linear displacement sensor is fixed to the connecting plate, and the slide is arranged parallel to the main axis of the driving device. The linear displacement sensor is used to convert the linear mechanical displacement of the connecting plate into an electrical signal.

[0030] The detection assembly further includes a guide plate 53, which is mounted on the main shaft of the driving device. A downward sliding groove is provided at the rear side of the guide plate 53, and a guide guard plate 44 is provided at the front end of the bracket. Figure 6 As shown, the guide guard plate 44 is provided with a slide rail matching the slide groove, and the slide groove is slidably embedded in the slide rail. The main shaft of the driving device moves along the direction of the slide groove and the slide rail, which improves the applicability and reliability of the test.

[0031] The rear side of the upper end of the workbench 1 may be provided with a sliding plate 41, such as Figure 5 As shown, the sliding plate 41 is provided with two sliding grooves 42, and the bracket 4 is detachably fixed to the sliding grooves 42 by bolts. It is convenient to adjust the left and right movement of the bracket 4, and can measure pull rods of different lengths, thereby improving applicability.

[0032] The present invention also includes a hydraulic device 7 and a control assembly 8. The liquid inlet and liquid outlet of the hydraulic device 7 are respectively connected to the liquid outlet and liquid inlet of the drive device 5 through a connecting pipe 6. The control assembly 8 is connected to the hydraulic device 7. The pressure sensor and the displacement sensor are electrically connected to the control assembly 8. The hydraulic device 7 provides power for the drive device 5. At the same time, the frequency adjustment and detection device on the hydraulic device 7 is used to control the pull rod test frequency. The controller of the control assembly is used to receive signals from the pressure sensor and the displacement sensor, and control the working pressure, working stroke and working frequency of the hydraulic device.

[0033] In a specific embodiment, a groove is provided at the upper end of the workbench to increase the range of motion of the pull rod and prevent the pull rod from hitting the workbench; the linear displacement sensor model is KTR-100mm; the pressure block 33 and the gasket 32 ​​are fixed to the base by bolts; the connecting plate 58 is fixed to one side of the connecting sleeve 55 by bolts; a mounting groove is provided at the front end of the protective plate 59, and the protective plate is installed at the front end of the connecting sleeve 55 by bolts passing through the mounting groove; the guide plate 53 is installed at the upper end of the connecting sleeve 55 and embedded on the main shaft, and a nut 52 is provided on the upper side of the guide plate 53, and the nut is screwed on the thread of the main shaft for clamping the guide plate 53, and the connecting sleeve 55 can be fixedly connected to the pressure sensor 56 by bolts.

[0034] The present invention can also be provided with a temperature sensor and a temperature control device to perform elasticity test on the pull rod at a specific temperature.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tension rod elasticity testing machine, comprising a workbench and a clamping device, characterized in that: It also includes a bracket, a driving device and a detection component, wherein the detection component includes a pressure sensor and a displacement sensor. A clamping device is provided on the left side of the workbench, a bracket is provided on the rear side of the workbench, a driving device is provided at the front end of the bracket, a pressure sensor is provided at the lower end of the main shaft of the driving device, and a displacement sensor is also provided on one side of the main shaft, one end of the pull rod is fixed on the clamping device, and the other end is arranged below the pressure sensor; The clamping device comprises a base, a gasket, a jacket, a pressure rod, a pressure block and a latch, the base is installed on the left side of the workbench, the base is provided with a mounting groove, the mounting groove is provided with a gasket, the gasket is provided with a pressure block, the pressure block is provided with a fixing groove matching the jacket, the right end of the jacket is provided with a through hole matching the pull rod, the pull rod is embedded in the through hole, the jacket is embedded in the fixing groove, the latch passes through the upper end of the pressure block and the upper end of the jacket in turn and is embedded in the pull rod or pressed on the pull rod; the pressure rod is fixed to the upper end of the base; It also includes a mounting bracket, the driving device is fixed in the mounting bracket, the mounting bracket is fixed to the front end of the bracket, and a guard plate is provided on the right side of the front end of the bracket; The detection assembly also includes a connecting sleeve, a pressing sleeve, a connecting plate and a protective plate. The lower side of the main shaft of the driving device is provided with a thread, the connecting sleeve is threadedly connected to the main shaft, the connecting plate is installed on one side of the connecting sleeve, the displacement sensor is installed on the connecting plate, the pressure sensor is fixed to the lower end of the connecting sleeve, the lower end of the pressure sensor is fixed with a pressing sleeve, and the protective plate is installed at the front end of the connecting sleeve and extends downward; The displacement sensor comprises a linear displacement sensor, the linear displacement sensor body is fixed on the front end of the bracket, the sliding piece of the linear displacement sensor is fixed on the connecting plate, and the sliding piece is arranged parallel to the main axis of the driving device.

2. The tension rod elasticity testing machine according to claim 1, characterized in that: The driving device comprises a hydraulic cylinder or a pneumatic cylinder.

3. The tension rod elasticity testing machine according to claim 1, characterized in that: The clamping device comprises a hydraulic clamp.

4. The tension rod elasticity testing machine according to claim 1, characterized in that: The detection component also includes a guide plate, which is installed on the main shaft. A downward sliding groove is provided on the rear side of the guide plate. A guide guard plate is provided on the front end of the bracket. A sliding rail matching the sliding groove is provided on the guide guard plate. The sliding groove can be slidably installed in the sliding rail.

5. The tension rod elasticity testing machine according to claim 1, characterized in that: A sliding plate is provided at the rear side of the upper end of the workbench, and two sliding grooves are provided on the sliding plate. The bracket is detachably fixed on the sliding grooves by bolts.

6. The tension rod elasticity testing machine according to claim 1, characterized in that: It also includes a hydraulic device and a control component, wherein the hydraulic device is connected to the driving device, the control component is connected to the hydraulic device, and the pressure sensor and the displacement sensor are electrically connected to the control component.

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