Automatic leveling device of universal material testing machine
By designing an automatic leveling device in the universal testing machine, and utilizing sensor components and a shock absorption mechanism, the problems of manual leveling errors and high-frequency vibrations were solved, achieving efficient and stable equipment installation and operation.
Patent Information
- Application Number
- CN202511537160.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-27
- Publication Date
- 2026-03-03
AI Technical Summary
Existing universal testing machines require manual leveling during installation, which introduces errors and results in low installation accuracy and efficiency. Over long-term use, changes in the foundation cause variations in levelness, and high-frequency vibrations can damage the equipment.
Design an automatic leveling device, including a base, a leveling mechanism and a shock absorption mechanism. The device uses a sensor assembly to monitor tilt and vibration in real time, and achieves automatic leveling and shock absorption through a servo motor and a ball screw and nut pair. The device also incorporates a spherical joint bearing and a buffer assembly to improve stability.
The automated leveling of the testing machine was achieved, which improved installation accuracy and efficiency, reduced the damage to the equipment caused by high-frequency vibration, and ensured the stable operation of the equipment.
Smart Images
Figure CN121595299A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of testing machine equipment, specifically relating to an automatic leveling device for a universal material testing machine. Background Technology
[0002] The universal testing machine integrates tensile, bending, compression, shear, and ring stiffness testing functions. It is mainly used for mechanical property testing of metallic and non-metallic materials and is an ideal testing equipment for industrial and mining enterprises, scientific research units, colleges and universities, engineering quality supervision stations and other departments.
[0003] The universal testing machine, also known as a universal testing machine or tensile testing machine, is a double-screw series machine with an integrated structure for control, measurement, and operation. It incorporates advanced modern technology and has advantages such as high precision, wide speed range, compact structure, convenient operation, and stable performance.
[0004] In existing technologies, universal testing machines require leveling of the installation location during installation. Currently, leveling is mainly done manually or by rebuilding the foundation on-site. Over time, changes in the foundation and other vibrations can cause the installation location to become uneven, necessitating readjustment. Manual leveling is prone to errors, requires highly skilled installers, and cannot guarantee installation accuracy and efficiency. Furthermore, the testing machine generates significant high-frequency vibrations when breaking large steel bars and materials, potentially damaging the machine. Summary of the Invention
[0005] The purpose of this invention is to solve the aforementioned technical problems in the prior art and to provide an automatic leveling device for a universal testing machine. This device consists of a base for mounting the testing machine, with a support frame fixedly connected to the mounting frame via connecting rods. A leveling mechanism and a shock-absorbing mechanism are installed within the base. The leveling mechanism is placed at the installation position, and the bottom of the testing machine is fixed to the leveling mechanism. The leveling mechanism automatically adjusts the installation level of the testing machine, improving installation efficiency and ensuring installation accuracy. Simultaneously, the shock-absorbing mechanism provides buffering and vibration protection for the testing machine, eliminating or reducing high-frequency vibrations generated during operation.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An automatic leveling device for a universal testing machine includes a base for mounting the testing machine. The base is located at the bottom of the testing machine, which is mounted on the ground via the base. The base includes a support frame, a mounting frame, and a connecting rod. The support frame rests against the ground, and the mounting frame is located above the support frame. The support frame and the mounting frame are fixedly connected by the connecting rod. A leveling mechanism and a shock-absorbing mechanism are provided between the support frame and the mounting frame. The leveling mechanism is used to adjust the horizontal level of the testing machine, and the shock-absorbing mechanism is located between the leveling mechanism and the ground to buffer and reduce vibrations of the testing machine. This invention, by setting up a base for mounting the testing machine, with the support frame fixedly connected to the mounting frame via the connecting rod, and incorporating the leveling and shock-absorbing mechanisms within the base, allows the leveling mechanism to be placed at the installation position. The bottom of the testing machine is fixed to the leveling mechanism, which automatically adjusts the horizontal level of the testing machine, improving installation efficiency and ensuring installation accuracy. Simultaneously, the shock-absorbing mechanism provides buffering and shock-absorbing protection for the testing machine, eliminating or reducing high-frequency vibrations generated during operation.
[0007] Furthermore, it also includes a sensor assembly, comprising tilt sensors, pressure sensors, and acceleration sensors. The tilt and pressure sensors are evenly distributed at the bottom of the testing machine, corresponding to the leveling mechanism. Data measured by the tilt sensors, combined with pressure distribution detected by the pressure sensors, controls the leveling mechanism to adjust the machine's level. Acceleration sensors are installed on the crossbeam and columns of the testing machine, used to detect vibration signals. By forming a sensor array with tilt and pressure sensors evenly distributed at the bottom of the testing machine, the changes in tilt angles of the testing machine in the X, Y, and Z axes can be detected, and the force conditions at different positions of the testing machine can be monitored, facilitating the leveling mechanism to adjust the machine at any time. Acceleration sensors installed on the crossbeam and columns of the testing machine monitor the vibration of the machine in real time during operation, capturing the instantaneous high-acceleration vibration signals generated when the machine breaks large-sized steel bars or other materials, and controlling the damping mechanism to eliminate or reduce high-frequency vibrations.
[0008] Furthermore, the leveling mechanism includes an adjusting plate, adjusting components, and a spherical plain bearing. The bottom of the testing machine is fixedly connected to the adjusting plate via fasteners. A through hole is located in the center of the mounting frame, and the adjusting plate is positioned within this hole. The spherical plain bearing has an upper connecting end at its top and a lower connecting end at its bottom. The lower connecting end connects to the adjusting components, and the upper connecting end is fixedly connected to the adjusting plate. The adjusting components control the raising and lowering of the spherical plain bearing. The adjusting components are circumferentially distributed at the bottom of the adjusting plate, providing stable support for the testing machine. The spherical plain bearing has a self-aligning function, automatically adapting to uneven ground during leveling, thus improving the stability and adaptability of the automatic leveling device.
[0009] Furthermore, the upper connecting end is provided with a threaded connection part, and the adjusting plate has a corresponding stepped hole through it. The threaded connection part passes through the stepped hole, and a connecting nut is screwed into the threaded connection part, which is then tightened inside the stepped hole. By inserting the upper connecting end into the stepped hole and screwing the connecting nut into the threaded connection part, the stepped hole is designed to connect and fix the adjusting plate to the spherical plain bearing, while preventing the threaded connection part from protruding from the top surface of the adjusting plate.
[0010] Furthermore, the adjustment assembly includes a servo motor, a planetary reducer, a ball screw and nut pair, and a telescopic rod. The telescopic rod contains the ball screw and nut pair. The servo motor is connected to the planetary reducer and installed at the bottom of the telescopic rod. The planetary reducer is connected to the ball screw and nut pair. The servo motor controls the planetary reducer to drive the ball screw and nut pair to rotate, thereby controlling the extension and retraction of the telescopic rod. By controlling the planetary reducer to drive the ball screw and nut pair, the telescopic rod extends and retracts, and the extension and retraction of the telescopic rod can drive the spherical plain bearing to rise and fall.
[0011] Furthermore, the top of the telescopic rod is equipped with a connecting sleeve, and the lower connecting end is equipped with a threaded connection part two. The connecting sleeve is correspondingly equipped with internal threads, and the threaded connection part two is threadedly connected to the connecting sleeve. Through the connecting sleeve and the internal threads, a fixed connection between the telescopic rod and the spherical plain bearing is achieved.
[0012] Furthermore, the vibration damping mechanism includes buffer assembly one and buffer assembly two. Buffer assembly one is located between the leveling assembly and the ground, and buffer assembly one dampens the adjustment assembly. The top of buffer assembly two rests against the bottom of the mounting frame, and the bottom of buffer assembly two is fixedly connected to the support frame, damping the adjustment plate. By setting buffer assembly one and buffer assembly two to dampen and reduce the vibration of the adjustment assembly and adjustment plate, the high-frequency vibration generated by the testing machine during operation is greatly eliminated or reduced.
[0013] Furthermore, the buffer assembly includes an elastic rubber block, a buffer spring, an electromagnetic damper, and an anti-slip and wear-resistant pad. The electromagnetic damper is connected between the elastic rubber block and the anti-slip and wear-resistant pad. A set of buffer springs is installed on the outside of the electromagnetic damper. The top of the elastic rubber block is connected to the adjustment assembly, and the anti-slip and wear-resistant pad rests against the ground. The elastic rubber block provides cushioning and shock absorption. The electromagnetic damper is filled with a magnetic polymer liquid, and the density of the liquid is changed by altering its charge state. By adjusting the density of the internal oil, its fluidity is changed, thereby adjusting the damping. Together with the buffer spring, it reduces or eliminates the high-frequency vibrations generated during the operation of the testing machine. The anti-slip and wear-resistant pad is fixed at the installation position, providing an anti-slip effect and improving the stability of the leveling device installation.
[0014] Furthermore, the second buffer assembly includes a buffer base, a buffer top seat, and hinge rods. The buffer base is fixedly connected to the support frame, and the top surface of the buffer top seat abuts against the bottom surface of the adjusting plate. The top of the buffer base is provided with a downward sliding groove, and the bottom of the buffer top seat is provided with an upward sliding groove. Both ends of the downward sliding groove are slidably connected to downward sliding seats, and both ends of the upward sliding groove are slidably connected to upward sliding seats. The centers of the two hinge rods are hinged to each other, and the top end of the hinge rod is rotatably connected to the upward sliding seat. The bottom end of the hinge rod is rotatably connected to the downward sliding seat. Both ends of the downward sliding groove and the upward sliding groove are fixed with sealing seats. A damping rod is connected between the upward sliding seat, the downward sliding seat, and the sealing seat at the corresponding end. A second buffer spring is sleeved on the outside of the damping rod. After the adjustment plate is subjected to force, it presses downward against the adjustment plate. The force is transmitted to the buffer top seat through the adjustment plate. The buffer top seat is subjected to force downward, which causes the two hinge rods to drive the upper sliding seat and the lower sliding seat to slide towards the two ends of the buffer top seat and the buffer base, respectively. The damping rod and the spring work together to eliminate or reduce the vibration, further increasing the buffering and shock absorption effect.
[0015] Furthermore, the fixing components include a limiting seat and a locking screw. Limiting blocks are provided on both the front and rear sides of the bottom of the testing machine. The limiting seat is fixedly connected to the top of the adjusting plate. The top of the limiting seat is provided with a limiting groove. The limiting block is locked in the limiting groove. The limiting seat has a connecting hole 1 through it, which is connected to the limiting groove. The limiting block has a connecting hole 2 through it. When the limiting block is locked in the limiting groove, the locking screw passes through the connecting hole 1 and the connecting hole 2. Locking nuts are screwed into both ends of the locking screw. The locking nuts are tightened on the two limiting seats. Support feet are provided at the bottom of the testing machine. The top of the adjusting plate has a through hole 2 corresponding to the support feet. A connecting bolt is provided in the through hole 2. The top of the connecting bolt passes through the support foot. A fixing nut is screwed into the top of the connecting bolt. The fixing nut is tightened on the support foot. The limiting block is slid into the limiting groove by sliding. The locking screw is then passed through the two limiting seats and the two limiting blocks. The locking nut is then tightened at both ends of the locking screw for fixation. After the limiting block is installed in the limiting groove, the connecting bolt is passed through the second through hole and the support foot. The fixing nut is then screwed into the connecting bolt and tightened onto the support foot.
[0016] The present invention, by adopting the above-described technical solution, has the following beneficial effects: This invention provides a base for installing a testing machine. The support frame is fixedly connected to the mounting frame via connecting rods to form the base. A leveling mechanism and a shock-absorbing mechanism are installed inside the base. The leveling mechanism is placed at the installation position, and the bottom of the testing machine is fixed to the leveling mechanism. The leveling mechanism automatically adjusts the installation level of the testing machine, improving the installation efficiency and ensuring the installation accuracy. At the same time, the shock-absorbing mechanism provides buffering and vibration protection for the testing machine, eliminating or reducing high-frequency vibrations generated during the use of the testing machine.
[0017] This invention also includes a sensor assembly comprising a tilt sensor, a pressure sensor, and an acceleration sensor. The tilt and pressure sensors are evenly distributed at the bottom of the testing machine, corresponding to the leveling mechanism. Data measured by the tilt sensor, combined with pressure distribution detected by the pressure sensor, controls the leveling mechanism to adjust the machine's horizontality. The acceleration sensor is mounted on the crossbeam and column of the testing machine and is used to detect vibration signals. By forming a sensor array with tilt and pressure sensors evenly distributed at the bottom of the testing machine, the tilt angle changes in the X, Y, and Z axes can be detected, and the force conditions at different positions of the machine can be monitored, facilitating the leveling mechanism to adjust the machine at any time. The acceleration sensors installed on the crossbeam and column monitor the vibration of the testing machine in real time, capturing the instantaneous high-acceleration vibration signals generated when the machine breaks large-sized steel bars or other materials, and controlling the damping mechanism to eliminate or reduce high-frequency vibrations.
[0018] The adjustment component in this invention includes a servo motor, a planetary reducer, a ball screw and nut assembly, and a telescopic rod. The telescopic rod contains the ball screw and nut assembly. The servo motor is connected to the planetary reducer and installed at the bottom of the telescopic rod. The planetary reducer is connected to the ball screw and nut assembly. The servo motor controls the planetary reducer to drive the ball screw and nut assembly to rotate, thereby controlling the extension and retraction of the telescopic rod. The extension and retraction of the telescopic rod, controlled by the servo motor, drives the planetary reducer to operate the ball screw and nut assembly, thus controlling the extension and retraction. The extension and retraction of the telescopic rod can cause the spherical plain bearing to rise and fall.
[0019] In this invention, the buffer assembly includes an elastic rubber block, a buffer spring, an electromagnetic damper, and an anti-slip and wear-resistant pad. The electromagnetic damper is connected between the elastic rubber block and the anti-slip and wear-resistant pad. The buffer spring is located on the outside of the electromagnetic damper. The top of the elastic rubber block is connected to the adjustment assembly, and the anti-slip and wear-resistant pad rests against the ground. The elastic rubber block provides buffering and shock absorption. The electromagnetic damper is filled with a magnetic polymer liquid, and the density of the liquid is changed by altering its charge state. By adjusting the density of the internal liquid, its fluidity is altered, thus adjusting the damping. Together with the buffer spring, this reduces or eliminates the high-frequency vibrations generated during the operation of the testing machine. The anti-slip and wear-resistant pad is fixed at the installation position, providing an anti-slip effect and improving the stability of the leveling device installation. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of an automatic leveling device for a universal material testing machine according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the testing machine in this invention; Figure 3This is a schematic diagram of the bottom structure of the testing machine in this invention; Figure 4 This is a schematic diagram of the connection between the leveling mechanism and the buffer assembly in this invention; Figure 5 This is a schematic diagram of the spherical joint bearing in this invention; Figure 6 This is a schematic diagram of the structure of the adjustment component in this invention; Figure 7 This is a schematic diagram of the structure of buffer component one in this invention; Figure 8 This is a schematic diagram of the structure of the adjusting plate in this invention; Figure 9 This is a schematic diagram of the connection between the base and the second buffer assembly in this invention; Figure 10 This is a schematic diagram of the structure of buffer component two in this invention; In the diagram, 1-base; 2-support frame; 3-mounting frame; 4-connecting rod; 5-leveling mechanism; 6-shock absorption mechanism; 7-adjusting plate; 8-adjusting assembly; 9-spherical plain bearing; 10-testing machine; 11-through hole one; 12-upper connecting end; 13-lower connecting end; 14-threaded connection part one; 15-stepped hole; 16-internal thread; 17-servo motor; 18-planetary reducer; 19-telescopic rod; 20-connecting sleeve; 21-threaded connection part two; 22-buffer assembly one; 23-buffer assembly two; 24-elastic rubber block; 25-buffer spring one ; 26-Electromagnetic shock absorber; 27-Anti-slip and wear-resistant pad; 28-Buffer base; 29-Buffer top seat; 30-Hinged rod; 31-Sliding slide groove; 32-Upper slide groove; 33-Sliding slide seat; 34-Upper slide seat; 35-Blocking seat; 36-Damping rod; 37-Buffer spring two; 38-Limit seat; 39-Locking screw; 40-Limit block; 41-Limit groove; 42-Connecting hole one; 43-Connecting hole two; 44-Locking nut; 45-Support foot; 46-Through hole two; 47-Connecting bolt; 48-Fixing nut; 49-Crossbeam; 50-Column. Detailed Implementation
[0021] like Figures 1 to 10 As shown, this invention provides an automatic leveling device for a universal testing machine, including a base 1 for mounting the testing machine 10. The base 1 is located at the bottom of the testing machine 10, and the testing machine 10 is mounted on the ground via the base 1. The base 1 includes a support frame 2, a mounting frame 3, and a connecting rod 4. The support frame 2 rests against the ground, and the mounting frame 3 is located above the support frame 2. The support frame 2 and the mounting frame 3 are fixedly connected by the connecting rod 4. A leveling mechanism 5 and a shock-absorbing mechanism 6 are provided between the support frame 2 and the mounting frame 3. The leveling mechanism 5 is used to adjust the horizontality of the testing machine 10, and the shock-absorbing mechanism 6 is located between the leveling mechanism 5 and the ground, and is used to buffer and dampen the testing machine 10.
[0022] The system also includes a sensor assembly comprising tilt sensors, pressure sensors, and acceleration sensors. The tilt and pressure sensors are evenly distributed at the bottom of the leveling mechanism 5, corresponding to the leveling mechanism 5. Data measured by the tilt sensors, combined with pressure distribution detected by the pressure sensors, controls the leveling mechanism 5 to adjust the horizontality of the testing machine 10. Acceleration sensors are installed on the crossbeam 49 and column 50 of the testing machine 10, and are used to detect vibration signals. By forming a sensor array with tilt and pressure sensors evenly distributed at the bottom of the testing machine 10, the system can detect changes in the tilt angle of the testing machine 10 in the X, Y, and Z axes and monitor the force at different positions of the testing machine 10, thus facilitating the leveling mechanism 5 to level the testing machine 10 at any time. Acceleration sensors installed on the crossbeam 49 and column 50 of the testing machine 10 monitor the vibration of the testing machine 10 in real time, capturing the instantaneous high-acceleration vibration signals generated when the testing machine 10 breaks large-sized steel bars or other materials; and controlling the damping mechanism 6 to eliminate or reduce high-frequency vibrations.
[0023] The leveling mechanism 5 includes an adjusting plate 7, an adjusting assembly 8, and a spherical plain bearing 9. The bottom of the testing machine 10 is fixedly connected to the adjusting plate 7 via a fastener. A through hole 11 is provided at the center of the mounting frame 3, and the adjusting plate 7 is located within the through hole 11. The top of the spherical plain bearing 9 has an upper connecting end 12, and the bottom of the spherical plain bearing 9 has a lower connecting end 13. The lower connecting end 13 is connected to the adjusting assembly 8, and the upper connecting end 12 is fixedly connected to the adjusting plate 7. The adjusting assembly 8 controls the raising and lowering of the spherical plain bearing 9. The adjusting assembly 8 is circumferentially distributed at the bottom of the adjusting plate 7, providing stable support for the testing machine 10. The spherical plain bearing 9 has a self-aligning function, automatically adapting to uneven ground during leveling, improving the stability and adaptability of the automatic leveling device. The upper connecting end 12 has a threaded connection part 14, and the adjusting plate 7 has a corresponding stepped hole 15. The threaded connection part 14 passes through the stepped hole 15, and a connecting nut is screwed into the threaded connection part 14, tightening the connecting nut within the stepped hole 15. By inserting the upper connecting end 12 into the stepped hole 15, and by screwing the connecting nut onto the threaded connection part 14 and tightening it in the stepped hole 15, the stepped hole 15 is designed to connect and fix the adjusting plate 7 to the spherical plain bearing 9, while preventing the threaded connection part from protruding from the top surface of the adjusting plate 7. The adjusting assembly 8 includes a servo motor 17, a planetary reducer 18, a ball screw nut pair, and a telescopic rod 19. The telescopic rod 19 contains a ball screw nut pair. The servo motor 17 is connected to the planetary reducer 18 and installed at the bottom of the telescopic rod 19. The planetary reducer 18 is connected to the ball screw nut pair. The servo motor 17 controls the planetary reducer 18 to drive the ball screw nut pair to rotate, thereby controlling the telescopic rod 19 to extend and retract. By controlling the planetary reducer 18 to drive the ball screw nut pair, the telescopic rod 19 can extend and retract, and the extension and retraction of the telescopic rod 19 can drive the spherical plain bearing 9 to rise and fall. The top of the telescopic rod 19 is provided with a connecting sleeve 20, and the lower connecting end 13 is provided with a threaded connecting part 21. The connecting sleeve 20 is provided with an internal thread 16, and the threaded connecting part 21 is threadedly connected to the connecting sleeve 20. Through the setting of the connecting sleeve 20 and the internal thread 16, the telescopic rod 19 is fixedly connected to the spherical plain bearing 9.
[0024] The shock absorption mechanism 6 includes a first buffer assembly 22 and a second buffer assembly 23. The first buffer assembly 22 is located between the leveling assembly and the ground, and it buffers and absorbs shocks from the adjusting assembly 8. The top of the second buffer assembly 23 rests against the bottom of the mounting frame 3, and the bottom of the second buffer assembly 23 is fixedly connected to the support frame 2, thus buffering and absorbing shocks from the adjusting plate 7. By setting up the first buffer assembly 22 and the second buffer assembly 23, the first and second buffer 23 respectively buffer and absorb shocks from the adjusting assembly 8 and the adjusting plate 7, greatly eliminating or reducing the high-frequency vibrations generated by the operation of the testing machine 10. The first buffer assembly 22 includes an elastic rubber block 24, a first buffer spring 25, an electromagnetic shock absorber 26, and an anti-slip and wear-resistant pad 27. The electromagnetic shock absorber 26 is connected between the elastic rubber block 24 and the anti-slip and wear-resistant pad 27. The first buffer spring 25 is sleeved on the outside of the electromagnetic shock absorber 26. The top of the elastic rubber block 24 is connected to the adjusting assembly 8, and the anti-slip and wear-resistant pad 27 rests against the ground. The elastic rubber block 24 has a buffering and shock absorption function. The electromagnetic shock absorber 26 is filled with magnetic polymer liquid, and the density of the liquid is changed by changing the charge state. By adjusting the density of the internal oil, its fluidity is changed, and the damping is adjusted. Together with the buffer spring 25, the high-frequency vibration generated when the testing machine 10 is working is reduced or eliminated. The anti-slip and wear-resistant pad 27 is fixed at the installation position, which has an anti-slip effect and improves the stability of the leveling device installation. The second buffer assembly 23 includes a buffer base 28, a buffer top seat 29, and a hinge rod 30. The buffer base 28 is fixedly connected to the support frame 2. The top surface of the buffer top seat 29 abuts against the bottom surface of the adjusting plate 7. The top of the buffer base 28 is provided with a sliding groove 31, and the bottom of the buffer top seat 29 is provided with an upper sliding groove 32. Both ends of the sliding groove 31 are slidably connected to a sliding seat 33, and both ends of the upper sliding groove 32 are slidably connected to an upper sliding seat 34. The centers of the two hinge rods 30 are hinged to each other. The top end of the hinge rod 30 is rotatably connected to the upper sliding seat 34, and the bottom end of the hinge rod 30 is rotatably connected to the sliding seat 33. Both ends of the sliding groove 31 and the upper sliding groove 32 are fixed with a sealing seat 35. A damping rod 36 is connected between the upper sliding seat 34, the sliding seat 33, and the corresponding sealing seat 35. A second buffer spring 37 is sleeved on the outside of the damping rod 36. After being subjected to force, the adjusting plate 7 presses downward against the adjusting plate 7, and the force is transmitted to the buffer top seat 29 through the adjusting plate 7. The buffer top seat 29 is subjected to downward force, which causes the two hinge rods 30 to drive the upper sliding seat 34 and the lower sliding seat 33 to slide towards the two ends of the buffer top seat 29 and the buffer base 28, respectively. The damping rod 36 cooperates with the spring to eliminate or reduce the vibration, thereby further increasing the buffering and shock absorption effect.The fixing components include a limiting seat 38 and a locking screw 39. Limiting blocks 40 are provided on both the front and rear sides of the bottom of the testing machine 10. The limiting seat 38 is fixedly connected to the top of the adjusting plate 7. A limiting groove 41 is provided on the top of the limiting seat 38, and the limiting block 40 is locked within the limiting groove 41. A connecting hole 42 passes through the limiting seat 38, communicating with the limiting groove 41. A connecting hole 43 passes through the limiting block 40. When the limiting block 40 is locked within the limiting groove 41, the locking screw 39... 9. Locking nuts 44 are screwed into both ends of the locking screw 39 through the connecting hole 1 42 and the connecting hole 2 43. The locking nuts 44 are tightened on the two limit seats 38. The bottom of the testing machine 10 is provided with a support foot 45. The top of the adjusting plate 7 is provided with a through hole 2 46 corresponding to the support foot 45. A connecting bolt 47 is provided in the through hole 2 46. The top of the connecting bolt 47 passes through the support foot 45. A fixing nut 48 is screwed into the top of the connecting bolt 47. The fixing nut 48 is tightened on the support foot 45. The limiting block 40 is slid into the limiting groove 41 by sliding. The locking screw 39 is then passed through the two limiting seats 38 and the two limiting blocks 40. The locking nut 44 is then tightened on both ends of the locking screw 39 for fixation. After the limiting block 40 is installed in the limiting groove 41, the connecting bolt 47 is passed through the through hole 46 and the support foot 45. The fixing nut 48 is then screwed into the connecting bolt 47 and tightened on the support foot 45.
[0025] This invention provides a base 1 for installing the testing machine 10. The support frame 2 is fixedly connected to the mounting frame 3 via a connecting rod 4 to form the base 1. A leveling mechanism 5 and a shock-absorbing mechanism 6 are installed inside the base 1. The leveling mechanism 5 is placed at the installation position, and the bottom of the testing machine 10 is fixed on the leveling mechanism 5. The leveling mechanism 5 automatically adjusts the installation level of the testing machine 10, improving the installation efficiency of the testing machine 10 and ensuring the installation accuracy of the testing machine 10. At the same time, the shock-absorbing mechanism 6 provides a buffer and shock-absorbing protection for the testing machine 10, eliminating or reducing the high-frequency vibration generated during the use of the testing machine 10.
[0026] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.
Claims
1. An automatic leveling device for a universal testing machine, characterized in that: The system includes a base for mounting a testing machine. The base is located at the bottom of the testing machine, which is then mounted on the ground via the base. The base includes a support frame, a mounting frame, and a connecting rod. The support frame rests against the ground, and the mounting frame is positioned above the support frame. The support frame and the mounting frame are fixedly connected by the connecting rod. A leveling mechanism and a shock-absorbing mechanism are provided between the support frame and the mounting frame. The leveling mechanism is used to adjust the horizontality of the testing machine, and the shock-absorbing mechanism is located between the leveling mechanism and the ground to buffer and reduce vibrations in the testing machine.
2. The automatic leveling device for a universal testing machine according to claim 1, characterized in that: It also includes a sensor assembly, which includes a tilt sensor, a pressure sensor, and an acceleration sensor. The tilt sensor and the pressure sensor correspond to the leveling mechanism, which is evenly distributed at the bottom of the testing machine. The data measured by the tilt sensor, combined with the pressure distribution detected by the pressure sensor, controls the leveling mechanism to adjust the level of the testing machine. The acceleration sensor is installed on the crossbeam and column of the testing machine and is used to detect vibration signals.
3. The automatic leveling device for a universal testing machine according to claim 1, characterized in that: The leveling mechanism includes an adjusting plate, an adjusting assembly, and a spherical plain bearing. The bottom of the testing machine is fixedly connected to the adjusting plate by a fixing member. The center of the mounting frame has a through hole, and the adjusting plate is located in the through hole. The top of the spherical plain bearing has an upper connecting end, and the bottom of the spherical plain bearing has a lower connecting end. The lower connecting end is connected to the adjusting assembly, and the upper connecting end is fixedly connected to the adjusting plate. The adjusting assembly controls the spherical plain bearing to rise and fall.
4. The automatic leveling device for a universal testing machine according to claim 3, characterized in that: The upper connecting end is provided with a threaded connection part, and the adjusting plate has a corresponding stepped hole. The threaded connection part passes through the stepped hole, and a connecting nut is screwed into the threaded connection part. The connecting nut is tightened in the stepped hole.
5. The automatic leveling device for a universal testing machine according to claim 3, characterized in that: The adjustment assembly includes a servo motor, a planetary reducer, a ball screw nut pair, and a telescopic rod. The telescopic rod contains the ball screw nut pair. The servo motor is connected to the planetary reducer and installed at the bottom of the telescopic rod. The planetary reducer is connected to the ball screw nut pair. The servo motor controls the planetary reducer to drive the ball screw nut pair to rotate, thereby controlling the telescopic rod to extend and retract.
6. The automatic leveling device for a universal testing machine according to claim 5, characterized in that: The top of the telescopic rod is provided with a connecting sleeve, and the lower connecting end is provided with a threaded connecting part two. The connecting sleeve is provided with an internal thread, and the threaded connecting part two is threadedly connected to the connecting sleeve.
7. The automatic leveling device for a universal testing machine according to claim 3, characterized in that: The shock absorption mechanism includes a first buffer component and a second buffer component. The first buffer component is disposed between the leveling component and the ground. The first buffer component provides shock absorption for the leveling component. The top of the second buffer component abuts against the bottom of the mounting frame, and the bottom of the second buffer component is fixedly connected to the support frame. The second buffer component provides shock absorption for the leveling plate.
8. The automatic leveling device for a universal testing machine according to claim 7, characterized in that: The first buffer assembly includes an elastic rubber block, a first buffer spring, an electromagnetic shock absorber, and an anti-slip and wear-resistant pad. The electromagnetic shock absorber is connected between the elastic rubber block and the anti-slip and wear-resistant pad. The first buffer spring is fitted on the outside of the electromagnetic shock absorber. The top of the elastic rubber block is connected to the adjustment assembly. The anti-slip and wear-resistant pad rests against the bottom surface.
9. The automatic leveling device for a universal testing machine according to claim 7, characterized in that: The second buffer assembly includes a buffer base, a buffer top seat, and hinge rods. The buffer base is fixedly connected to the support frame. The top surface of the buffer top seat abuts against the bottom surface of the adjusting plate. The top of the buffer base is provided with a sliding groove, and the bottom of the buffer top seat is provided with an upper sliding groove. Both ends of the sliding groove are slidably connected to sliding seats, and both ends of the upper sliding groove are slidably connected to upper sliding seats. The centers of the two hinge rods are hinged to each other. The top end of the hinge rod is rotatably connected to the upper sliding seat, and the bottom end of the hinge rod is rotatably connected to the sliding seat. Both ends of the sliding groove and the upper sliding groove are fixed with sealing seats. A damping rod is connected between the upper sliding seat, the sliding seat, and the sealing seat at one end. A second buffer spring is sleeved on the outside of the damping rod.
10. The automatic leveling device for a universal testing machine according to claim 3, characterized in that: The fixing components include a limiting seat and a locking screw. Limiting blocks are provided on both the front and rear sides of the bottom of the testing machine. The limiting seat is fixedly connected to the top of the adjusting plate. The top of the limiting seat has a limiting groove, and the limiting block is locked within the limiting groove. The limiting seat has a connecting hole one, which communicates with the limiting groove. The limiting block has a corresponding connecting hole two. When the limiting block is locked within the limiting groove, the locking screw passes through the connecting hole one and the connecting hole two. Locking nuts are screwed into both ends of the locking screw, and the locking nuts are tightened onto the two limiting seats. The bottom of the testing machine has a support foot. The top of the adjusting plate has a through hole two corresponding to the support foot. A connecting bolt is provided in the through hole two. The top of the connecting bolt passes through the support foot, and a fixing nut is screwed into the top of the connecting bolt, and the fixing nut is tightened onto the support foot.