An adjustable torque multiplier verification device

Abstract

The application provides an adjustable torque multiplier checking device and relates to the technical field of torque multiplier checking. The bottom support is provided with linear guide rails on both sides, a moving frame is slidably installed on the upper side of the linear guide rails through a sliding seat, an installation plate is fixedly installed on the lower side of the bottom support, a multiplier fixing plate is fixedly installed on the upper side of the bottom support, a large-range torque sensor is fixedly installed on the upper surface of the installation plate, a small-range torque sensor is fixedly installed on the inner upper end of the moving frame, and a first adapter is installed on the input end of the large-range torque sensor and the small-range torque sensor. The second adapter is internally provided with a movable shaft which can move up and down, and the foot-operated operation of the control assembly can realize the quick automatic connection and disconnection with the input end of the torque multiplier, significantly reduces the installation process and checking preparation time, simplifies the disassembly and replacement process, and improves the checking preparation efficiency.

Description

Technical Field

[0001] This invention relates to the field of torque multiplier calibration technology, and more specifically, to an adjustable torque multiplier calibration device. Background Technology

[0002] Torque multipliers, as commonly used torque amplification and transmission devices in industrial production, directly affect the quality and safety of subsequent operations due to their performance and accuracy; therefore, regular calibration is crucial. Existing torque multiplier calibration devices have several shortcomings: traditional devices have fixed support structures, making the disassembly and assembly of torque multipliers cumbersome, especially when replacing torque multipliers of different specifications, requiring significant time to adjust the installation position, resulting in low efficiency; some devices use motor-driven power sources, which are unable to generate large torques under static force, failing to meet the calibration requirements of various ranges; furthermore, the lack of flexible and adaptable installation structures and convenient adjustment mechanisms limits the applicability of the devices, and the time-consuming calibration preparation work affects the overall calibration efficiency.

[0003] Furthermore, while existing devices offer some assurance in terms of overload protection mechanisms and torque detection accuracy, their irrational structural layout hinders ease of operation and makes them unsuitable for the efficient and flexible calibration requirements of industrial production. Therefore, there is an urgent need to design a torque multiplier calibration device with an adjustable support structure, easy disassembly and replacement, and strong adaptability to address the shortcomings of existing technologies. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an adjustable torque multiplier calibration device, which solves the problem of time-consuming disassembly and replacement of multipliers in existing calibration devices, thus affecting calibration efficiency.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An adjustable torque multiplier calibration device includes a bottom bracket, linear guide rails on both sides of the bottom bracket, a movable frame slidably mounted on the upper side of the linear guide rails via a slide block, a mounting plate fixedly mounted on the lower side of the bottom bracket, a multiplier fixing plate fixedly mounted on the upper side of the bottom bracket, a large-range torque sensor fixedly mounted on the upper surface of the mounting plate, a small-range torque sensor fixedly mounted on the upper end of the movable frame, first adapters respectively mounted on the input ends of the large-range torque sensor and the small-range torque sensor, the input ends of the upper and lower first adapters being connected to the output end of a torque limiter, a second adapter fixedly mounted on the upper output end of the torque limiter, the second adapter being used to connect to the input end of the torque multiplier, and the torque limiter being used for overload protection;

[0007] A main controller is fixedly installed on one side of the mobile frame, and an adjustment mechanism is installed on the other side of the mobile frame. The adjustment mechanism is used to adjust the horizontal position of the mobile frame. A control component is installed on one side of the bottom bracket. The control component is used to control the connection between the second adapter and the input end of the torque multiplier.

[0008] Preferably, a lever arm is rotatably mounted on the upper end of the movable frame, and an adaptation groove is provided on one side of the lever arm. A hydraulic electric cylinder is fixedly mounted on one side of the upper end of the movable frame, and an adapter is fixedly mounted on the output end of the hydraulic electric cylinder. One end of the adapter is movably disposed inside the adaptation groove. The output end of the lever arm is connected to the internal rotating shaft of a small-range torque sensor for applying initial torque to the system.

[0009] Preferably, the adjustment mechanism includes a gearbox, an extension frame is fixedly installed on one side of the movable frame, a screw sleeve is provided inside the extension frame, a handwheel is installed at the input end of the gearbox, and a hand crank screw is fixedly installed at the output end of the gearbox, with the hand crank screw body threadedly engaged with the screw sleeve inside the extension frame.

[0010] Preferably, the torque multiplier fixing plate has a through hole in the middle for connecting the torque multiplier to the torque limiter below, and a lever arm placement groove is provided on one side of the through hole for placing the reaction lever arm of the torque multiplier.

[0011] Preferably, clamping plates are slidably installed on both sides inside the lever arm placement groove. The clamping plates are used to clamp and position the reaction lever arm of the torque multiplier. A rotating frame is fixedly installed on the outside of the multiplier fixing plate. A positive and negative lead screw is rotatably installed inside the rotating frame. The rod body of the positive and negative lead screw is located inside the lever arm placement groove and the rod body is threadedly engaged with the clamping plates on both sides.

[0012] An adjustment groove is provided on the lower side of the lever arm placement groove, and a transmission groove is provided on one side of the lever arm placement groove. A second bevel gear shaft is rotatably mounted on the upper side of the transmission groove, and a first bevel gear shaft is rotatably mounted on the lower side of the transmission groove. The first bevel gear shaft and the second bevel gear shaft mesh with each other to drive the displacement of the locking sleeve to adapt to the reaction lever arm screw hole of different specifications. The shaft body of the first bevel gear shaft is provided with threads. A locking sleeve is slidably mounted inside the adjustment groove. A screw hole is provided at the bottom of the locking sleeve. The threads of the shaft body of the first bevel gear shaft are threaded with the screw hole at the bottom of the locking sleeve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting an adjustment mechanism to drive the moving frame to move horizontally along the linear guide rail, the installation position can be quickly adjusted, increasing the space at the installation position to facilitate personnel installation, effectively solving the problems of cumbersome disassembly and assembly and low efficiency of traditional fixed brackets.

[0015] Furthermore, the second adapter has a movable shaft that can move up and down inside, which, together with the foot pedal operation of the control component, enables quick and automatic connection and disconnection with the torque multiplier input. This significantly reduces the installation process and calibration preparation time, simplifies the disassembly and replacement process, and improves calibration preparation efficiency.

[0016] 2. By using a hydraulic electric actuator in conjunction with a lever arm to apply the initial torque, the shortcomings of traditional motor drives in generating large torque under static force are overcome. This can meet the calibration requirements of various ranges. Furthermore, by using a hydraulic electric actuator in conjunction with a servo valve and an electronic control module, the main controller can accurately adjust the output parameters of the hydraulic electric actuator, solving the problem of insufficient static large torque output of traditional motors, ensuring the stability and calibration accuracy of torque output, and making the power control precise and reliable.

[0017] This application is equipped with two sets of torque sensors, one with a small range and the other with a large range, which detect the input and output torque in real time, ensuring the accuracy of the calibration data. The electronic control system collects the data from the two sets of torque sensors in real time and displays it intuitively through the human-machine interaction module. Operators can keep track of the calibration status in real time, detect abnormalities in a timely manner, and improve the controllability of the calibration process.

[0018] 3. In this application, friction torque limiters are installed at the sensor input terminals to achieve overload protection through preset sliding torque, preventing equipment damage. The overload protection and core functions are highly synergistic. The friction torque limiter can effectively avoid overload damage to the equipment. Combined with precise electronic control and data monitoring, it realizes full-process protection of "mechanical protection + electronic control regulation + data traceability", improving the reliability and practicality of the device.

[0019] This device is designed with a lever arm placement slot and a bidirectional adjustable clamping plate, along with an adjustable locking nut, which greatly improves the compatibility of torque multipliers of different specifications. It can firmly fix the reaction lever arm of torque multipliers of different specifications, ensuring the stability of the calibration process. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a front view structural diagram of the present invention;

[0022] Figure 3 This is a side view of the structure of the present invention;

[0023] Figure 4This is a top view of the structure of the present invention;

[0024] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure at point AA;

[0025] Figure 6 yes Figure 5 Enlarged structural diagram at point a;

[0026] Figure 7 This is a three-dimensional structural diagram of the bottom support;

[0027] Figure 8 This is a top view of the bottom support structure.

[0028] Figure 9 yes Figure 8 Schematic diagram of the cross-sectional structure at point BB;

[0029] Figure 10 yes Figure 9 Enlarged structural diagram at point b;

[0030] Figure 11 yes Figure 8 Schematic diagram of the cross-sectional structure at the CC section;

[0031] Figure 12 This is a three-dimensional structural diagram of the swing arm;

[0032] Figure 13 This is a three-dimensional structural diagram of the swing arm from another perspective;

[0033] Figure 14 This is a three-dimensional structural diagram of the second adapter;

[0034] Figure 15 This is a bottom view of the second adapter structure;

[0035] Figure 16 This is a side view of the second adapter.

[0036] Figure 17 yes Figure 16 Schematic diagram of the cross-sectional structure at point DD.

[0037] In the diagram: 1. Bottom bracket; 101. Multiplier fixing plate; 102. Mounting plate; 103. Through hole; 104. Lever arm placement slot; 1041. Rotating frame; 1042. Positive and negative lead screws; 1043. Adjustment slot; 1044. Clamping plate; 105. Transmission slot; 1051. Locking nut; 1052. First bevel gear shaft; 1053. Second bevel gear shaft; 2. Linear guide rail; 3. Moving frame; 301. Hydraulic electric cylinder; 302. Lever arm tie rod; 303. Adaptation slot; 304. Adapter seat; 305. Slide seat; 4. Main controller; 5. Control components; 501. Swing rod; 502. Limit guide plate; 503. Foot pedal 504. Plate; 505. First rotating seat; 506. Second rotating seat; 507. Spring connecting rod; 508. Connecting shaft; 609. Second adapter; 6001. Housing; 601. Splined shaft; 602. Connecting shaft; 603. Limiting sleeve; 604. Return spring; 605. Movable groove; 606. Slide groove; 607. Extension rod; 608. Force-bearing pressure plate; 610. Movable shaft; 7. Large-range torque sensor; 8. Small-range torque sensor; 9. First adapter; 10. Torque limiter; 1001. Splined sleeve; 11. Adjustment mechanism; 1101. Extension frame; 1102. Hand crank screw; 1103. Gearbox; 1104. Handwheel. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figures 1 to 4 As shown, an adjustable torque multiplier calibration device includes a bottom support 1, linear guide rails 2 on both sides of the bottom support 1, a movable frame 3 slidably mounted on the upper side of the linear guide rails 2 via a slide block 305, a mounting plate 102 fixedly mounted on the lower side of the bottom support 1, a multiplier fixing plate 101 fixedly mounted on the upper side of the bottom support 1, a large-range torque sensor 7 fixedly mounted on the upper surface of the mounting plate 102, a small-range torque sensor 8 fixedly mounted inside the upper end of the movable frame 3, first adapters 9 respectively mounted on the input ends of the large-range torque sensor 7 and the small-range torque sensor 8, the input ends of the upper and lower first adapters 9 connected to the output end of a torque limiter 10, and a second adapter 6 fixedly mounted on the output end of the upper torque limiter 10 for connecting to the input end of the torque multiplier; wherein the linear guide rails 2 can be equipped with existing structures to ensure that the small-range torque sensor 8, the large-range torque sensor 7, and the multiplier are coaxially aligned.

[0041] A main controller 4 is fixedly installed on one side of the moving frame 3, and an adjustment mechanism 11 is installed on the other side of the moving frame 3. The adjustment mechanism 11 is used to adjust the horizontal position of the moving frame 3. A control component 5 is installed on one side of the bottom bracket 1. The control component 5 is used to control the connection between the second adapter 6 and the input end of the torque multiplier.

[0042] In this embodiment, a lever arm 302 is rotatably mounted on the upper end of the movable frame 3. An adaptation groove 303 is provided on one side of the lever arm 302. A hydraulic electric cylinder 301 is fixedly mounted on one side of the upper end of the movable frame 3. An adapter 304 is fixedly mounted on the output end of the hydraulic electric cylinder 301. One end of the adapter 304 is movably disposed inside the adaptation groove 303. The output end of the lever arm 302 is connected to the internal rotating shaft of the small-range torque sensor 8.

[0043] To apply the torque during testing, the hydraulic electric actuator 301 is activated. When the output end of the hydraulic electric actuator 301 extends outward, the movable connection between the adapter 304 and the adaptation groove 303 drives the lever arm 302 to rotate actively. This allows the output end of the lever arm 302 to apply torque to the small-range torque sensor 8. Through the sequential connection of the structure below the small-range torque sensor 8, the internal structure of the torque multiplier rotates, allowing the large-range torque sensor 7 below to receive the multiplied torque. The small-range torque sensor 8 is used to detect the input torque, and the large-range torque sensor 7 is used to detect the output torque. Both sets of sensors are connected to the corresponding ends of the torque multiplier through the first adapter 9, enabling the detection of the torque at both ends of the torque multiplier to meet the calibration requirements.

[0044] It should be noted that the torque limiter 10 is a friction-type torque limiter 10, which is installed in conjunction with two sets of torque sensors. It includes a spring-loaded friction surface, a nut / bolt adjustment assembly and a central component (sprocket, gear, pulley or flange). The friction surface is a dry friction plate without asbestos and is rust-proof. Overload protection is achieved by adjusting the spring force to preset the sliding torque.

[0045] In this application, the main controller 4 includes a power control module, a data acquisition module, a data processing and storage module, a human-machine interaction module, and a data export module. Each module is connected via cable or network communication. The main controller 4 adopts an industrial-grade PLC controller. The main controller 4 is used to receive operation instructions from the human-machine interaction module, control the operation of the power control module, and coordinate the data acquisition, processing, storage, and export processes.

[0046] The power control module includes a servo valve controller and a hydraulic energy driver, which are electrically connected to the main controller 4. The main controller 4 controls the servo valve controller by outputting pulse signals, adjusting the opening of the servo valve, and thereby controlling the pressure, flow, output force and loading rate of the hydraulic electric cylinder 301 to achieve precise torque output and regulation.

[0047] Data acquisition module: includes a data acquisition card and a signal conditioning circuit. The data acquisition card is connected to the small-range torque sensor 8 and the large-range torque sensor 7 via a measurement cable. The signal conditioning circuit filters, amplifies, and converts the analog signals output by the sensors to digital before transmitting them to the main controller 4. The acquisition frequency is not less than 10Hz to ensure real-time data performance.

[0048] Data processing and storage module: Integrated into the main controller 4, it has a built-in data processing algorithm to perform real-time calculation and analysis on the collected input torque and output torque data to obtain key parameters such as torque amplification factor and deviation value; it is also equipped with a local storage unit (storage capacity of not less than 16GB) to automatically store the original data, calculation results and verification parameters (including verification date, time, operator, torque multiplier model and specifications, target torque value, etc.) during the verification process.

[0049] Human-machine interface module: including a touch screen, mounted on the surface of the control box, used to display the equipment operating status (hydraulic pressure, cylinder position, sensor connection status), real-time torque data (input torque, output torque, amplification factor), and historical verification records; supports operators to input verification parameters, start / stop verification, set data export conditions, etc.

[0050] Data export module: Includes Ethernet interface, USB interface and EXCEL data generation unit. The EXCEL data generation unit has built-in standardized data templates and can automatically generate EXCEL tables from the verification data in a preset format (including basic verification information, torque change curve data over time, key parameter statistics, verification conclusions, etc.). Operators can directly export data files through the USB interface, or communicate with the computer through the Ethernet interface to remotely export EXCEL data.

[0051] Example 2

[0052] like Figures 11 to 17As shown, the second adapter 6 includes a housing 601. The upper end of the housing 601 is fixedly connected to the housing of the upper torque limiter 10. A movable groove 606 is provided inside the housing 601. A limit sleeve 604 is vertically slidably installed inside the movable groove 606. A movable shaft 610 is rotatably installed inside the limit sleeve 604. A spline shaft 602 is fixedly installed at the upper end of the movable shaft 610. A docking shaft 603 is fixedly installed at the lower end of the movable shaft 610. A spline sleeve 1001 is installed at the output end of the torque limiter 10 and connected to the spline shaft 602.

[0053] In this embodiment, a sliding groove 607 is provided on one side of the outer shell 601. An extension rod 608 is slidably installed inside the sliding groove 607. One end of the extension rod 608 is fixedly connected to the limiting sleeve 604, and a force-bearing pressure plate 609 is fixedly installed on the other end of the extension rod 608. A reset spring 605 is provided between the limiting sleeve 604 and the bottom of the movable groove 606.

[0054] Since the output end of the torque multiplier is connected to the lower torque limiter 10 when it is placed, in order to quickly connect the upper torque limiter 10 to the input end of the torque multiplier and achieve a rapid connection, this application installs a second adapter 6 at the output end of the torque limiter 10. The second adapter 6 has a movable shaft 610 that can move up and down inside. Under the limiting operation of the limit guide plate 502 on the force pressure plate 609, when the second adapter 6 moves to the coaxial position with the lower torque multiplier, the movable shaft 610 will be inserted downward into the input end of the torque multiplier. This allows the application to achieve a rapid automatic connection when the moving frame 3 is in place, further reducing the installation process and improving the verification efficiency. During the downward movement of the movable shaft 610, the return spring 605 can buffer this process to avoid conflict between the docking shaft 603 and the input end of the torque multiplier.

[0055] It should be noted that the control component 5 includes a first rotating seat 504 and a second rotating seat 505. A swing rod 501 is rotatably mounted on the outer side of the second rotating seat 505. A limit guide plate 502 is fixedly mounted on the upper end of the swing rod 501. The limit guide plate 502 is used to press the pressure plate 609. A foot pedal 503 is fixedly mounted on the lower end of the swing rod 501.

[0056] The swing rod 501 has a connecting shaft 507 inside, and a spring connecting rod 506 is flexibly installed between the connecting shaft 507 and the first rotating seat 504. The spring connecting rod 506 has a stronger elastic force than the return spring 605.

[0057] To facilitate quick disconnection of the torque multiplier input end from the second adapter 6, enabling rapid assembly and disassembly, the operator presses the foot pedal 503, causing one end of the swing rod 501 to tilt upwards using leverage. After tilting, the return spring 605 pushes the limit sleeve 604 upwards. The rotational connection between the limit sleeve 604 and the movable shaft 610 causes the movable shaft 610 to move upwards, thereby disconnecting the docking shaft 603 from the torque multiplier input end. This allows the operator to quickly adjust the position of the moving frame 3 to achieve rapid assembly and disassembly of the torque multiplier.

[0058] Example 3

[0059] like Figures 1 to 10 As shown, the adjustment mechanism 11 includes a gearbox 1103, an extension frame 1101 is fixedly installed on one side of the moving frame 3, a screw sleeve is provided inside the extension frame 1101, a handwheel 1104 is installed at the input end of the gearbox 1103, and a hand crank screw 1102 is fixedly installed at the output end of the gearbox 1103. The body of the hand crank screw 1102 is threadedly engaged with the screw sleeve inside the extension frame 1101.

[0060] To facilitate the disassembly and replacement of the torque multiplier, the operator can manually crank the handwheel 1104, which, driven by the gearbox 1103, causes the hand crank screw 1102 to engage with the internal threaded sleeve of the extension frame 1101. Then, utilizing the limiting engagement between the linear guide rail 2 and the slide block 305, the moving frame 3 moves along the linear guide rail 2, thus misaligning it with the multiplier fixing plate 101 to provide replacement space. This facilitates the disassembly and replacement of the torque multiplier, improving calibration efficiency.

[0061] In this embodiment, a through hole 103 is provided in the middle of the torque multiplier fixing plate 101. The through hole 103 is used to connect the torque multiplier to the torque limiter 10 below. A lever arm placement groove 104 is provided on one side of the through hole 103. The lever arm placement groove 104 is used to place the reaction lever arm of the torque multiplier.

[0062] In the specific setup, clamping plates 1044 are slidably installed on both sides of the inside of the lever arm placement groove 104, and a rotating frame 1041 is fixedly installed on the outside of the multiplier fixing plate 101. A positive and negative screw 1042 is rotatably installed inside the rotating frame 1041. The rod body of the positive and negative screw 1042 is located inside the lever arm placement groove 104 and the rod body is threadedly engaged with the clamping plates 1044 on both sides.

[0063] The torque multiplier can be easily and quickly placed by personnel by storing the reaction force arm in the force arm placement slot 104. In order to ensure that the torque multiplier does not move during the calibration process, the positive and negative lead screws 1042 are rotated to make them threaded into the clamping plates 1044 on both sides, so that the clamping plates 1044 on both sides move relative to each other and clamp the reaction force arm part to ensure stability in the subsequent calibration process.

[0064] An adjustment groove 1043 is provided on the lower side of the lever arm placement groove 104, and a transmission groove 105 is provided on one side of the lever arm placement groove 104. A second bevel gear shaft 1053 is rotatably mounted on the upper side of the transmission groove 105, and a first bevel gear shaft 1052 is rotatably mounted on the lower side of the transmission groove 105. The first bevel gear shaft 1052 and the second bevel gear shaft 1053 mesh with each other. The shaft body of the first bevel gear shaft 1052 is threaded. A locking nut 1051 is slidably mounted inside the adjustment groove 1043. A threaded hole is provided at the bottom of the locking nut 1051. The thread of the shaft body of the first bevel gear shaft 1052 is threaded with the threaded hole at the bottom of the locking nut 1051.

[0065] To accommodate different types of torque multipliers, the second bevel gear shaft 1053 is rotated. By meshing with the second bevel gear shaft 1053, the thread on the shaft of the second bevel gear shaft 1053 engages with the threaded hole at the bottom of the locking sleeve 1051. This adjusts the position of the locking sleeve 1051 at the bottom of the lever arm placement groove 104, allowing it to be threadedly connected to the reaction lever arm with a threaded hole using bolts. This structure enables the present application to adapt to torque multipliers of different specifications, achieving rapid positioning and fixation.

[0066] The working principle of this adjustable torque multiplier calibration device:

[0067] Mechanical structure assembly:

[0068] Install the linear guide rail 2 on the bottom bracket 1 and ensure smooth sliding; fix the adjustment mechanism 11 to one end of the bottom bracket 1, and connect the moving frame 3 to the linear guide rail 2 through the slide 305. The output end of the hand crank screw 1102 is threaded into the extension frame 1101.

[0069] Fix the torque multiplier fixing plate 101 to the upper surface of the bottom bracket 1, and adjust the position of the locking nut 1051 according to the specifications of commonly used equipment.

[0070] A hydraulic electric push cylinder 301, a lever arm 302, a small-range torque sensor 8, and a friction torque limiter 10 are installed on the mobile frame 3. A large-range torque sensor 7 and a friction torque limiter 10 are installed on the bottom bracket 1 to ensure that the axes of each transmission component are aligned.

[0071] Connect the hydraulic lines: Connect the hydraulic electric cylinder 301 to the hydraulic power source and servo valve through the hydraulic lines, and check the sealing performance of the lines.

[0072] Electrical control system assembly:

[0073] Install the main controller 4 (PLC), data acquisition card, servo valve controller, and hydraulic energy drive in the control box, and connect the main controller 4 with the servo valve controller and hydraulic energy drive through the control cable;

[0074] The data acquisition card is connected to the small-range torque sensor 8 and the large-range torque sensor 7 via a measurement cable, and the signal conditioning circuit is connected to the acquisition circuit.

[0075] The touch screen is embedded in the surface of the control box and is connected to the main controller 4 via a communication cable; an Ethernet interface and a USB interface are installed on the side of the control box and are electrically connected to the main controller 4.

[0076] Debug the data processing and storage module and preset the EXCEL data template (including fields such as verification number, date, time, operator, equipment model, target torque, real-time input torque, real-time output torque, magnification, deviation value, and verification conclusion).

[0077] Verification and Data Processing Flow

[0078] Equipment debugging and parameter setting:

[0079] By using the handwheel 1104 of the adjustment mechanism 11, the moving frame 3 is moved to one side to reserve space for installing the multiplier; according to the rated torque of the torque multiplier to be tested, the preset sliding torque of the friction torque limiter is adjusted (usually 1.2-1.5 times the rated torque).

[0080] Start the electronic control system and input the verification parameters via the touch screen: verification number, operator, torque multiplier model and specifications, target torque value, loading rate, and holding time.

[0081] Torque multiplier installation:

[0082] The torque multiplier to be tested is fixed to the torque multiplier fixing plate 101 and locked with bolts; then the handwheel 1104 is turned to move the moving frame 3, so that the small-range torque sensor 8 is connected to the input end of the torque multiplier and the large-range torque sensor 7 is connected to the output end, ensuring a reliable and gapless connection.

[0083] Verification Startup and Data Acquisition:

[0084] Clicking the "Start Verification" button on the touch screen sends a command from the main controller 4 to the power control module. The servo valve controller adjusts the opening of the servo valve, and the hydraulic electric cylinder 301 outputs force at the preset loading rate. This force is converted into torque through the lever arm 302 and transmitted to the torque multiplier.

[0085] The data acquisition module collects signals from the torque sensor in real time, and after signal conditioning, transmits them to the main controller 4. The main controller 4 calculates parameters such as torque amplification factor and deviation value, and displays them on the touch screen in real time.

[0086] Data storage and export:

[0087] During the verification process, the main controller 4 automatically stores the original data, calculation results, and verification parameters to the local storage unit; after the load period ends, the system automatically generates the verification conclusion (pass / fail).

[0088] Operators can select the "Data Export" function via the touch screen, choose the export method (USB export / Ethernet export), and the system will generate an Excel spreadsheet according to the preset template and export it; they can also query historical verification records and export past data.

[0089] Finalization process:

[0090] After the verification is completed, the main controller 4 issues an unloading command, and the hydraulic electric cylinder 301 is reset; the hydraulic power and electrical control system are turned off, the manual moving frame 3 is moved, the bolts fixing the multiplier are loosened, the torque multiplier is removed, and the verification is completed.

[0091] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. An adjustable torque multiplier calibration device, comprising a bottom support (1), wherein linear guide rails (2) are provided on both sides of the bottom support (1), and a movable frame (3) is slidably mounted on the upper side of the linear guide rails (2) via a slide block (305), characterized in that: A mounting plate (102) is fixedly installed on the lower side of the bottom bracket (1), a multiplier mounting plate (101) is fixedly installed on the upper side of the bottom bracket (1), a large-range torque sensor (7) is fixedly installed on the upper surface of the mounting plate (102), a small-range torque sensor (8) is fixedly installed inside the upper end of the moving frame (3), a first adapter (9) is installed on the input ends of the large-range torque sensor (7) and the small-range torque sensor (8), the input ends of the upper and lower first adapters (9) are connected to the output end of the torque limiter (10), a second adapter (6) is fixedly installed on the output end of the upper torque limiter (10), the second adapter (6) is used to connect to the input end of the torque multiplier, and the torque limiter (10) is used for overload protection; A main controller (4) is fixedly installed on one side of the moving frame (3), and an adjustment mechanism (11) is installed on the other side of the moving frame (3). The adjustment mechanism (11) is used to adjust the horizontal position of the moving frame (3). A control component (5) is installed on one side of the bottom bracket (1). The control component (5) is used to control the connection between the second adapter (6) and the input end of the torque multiplier.

2. The adjustable torque multiplier calibration device according to claim 1, characterized in that: The upper end of the movable frame (3) is rotatably mounted with a lever arm (302). An adaptation groove (303) is provided on one side of the lever arm (302). A hydraulic electric cylinder (301) is fixedly mounted on one side of the upper end of the movable frame (3). An adapter (304) is fixedly mounted on the output end of the hydraulic electric cylinder (301). One end of the adapter (304) is movably disposed inside the adaptation groove (303). The output end of the lever arm (302) is connected to the internal rotating shaft of the small-range torque sensor (8) for applying initial torque to the system.

3. The adjustable torque multiplier calibration device according to claim 1, characterized in that: The second adapter (6) includes a housing (601), the upper end of which is fixedly connected to the housing of the upper torque limiter (10). A movable groove (606) is provided inside the housing (601). A limiting sleeve (604) is vertically slidably installed inside the movable groove (606). A movable shaft (610) is rotatably installed inside the limiting sleeve (604). A spline shaft (602) is fixedly installed at the upper end of the movable shaft (610). A docking shaft (603) is fixedly installed at the lower end of the movable shaft (610). The docking shaft (603) is used to be plugged into the input end of the torque multiplier. A spline sleeve (1001) is installed at the output end of the torque limiter (10) and connected to the spline shaft (602).

4. The adjustable torque multiplier calibration device according to claim 3, characterized in that: A sliding groove (607) is provided on one side of the outer shell (601). An extension rod (608) is slidably installed inside the sliding groove (607). One end of the extension rod (608) is fixedly connected to the limiting sleeve (604), and a force-bearing pressure plate (609) is fixedly installed on the other end of the extension rod (608). A return spring (605) is provided between the limiting sleeve (604) and the bottom of the movable groove (606).

5. The adjustable torque multiplier calibration device according to claim 4, characterized in that: The control component (5) includes a first rotating seat (504) and a second rotating seat (505). A swing rod (501) is rotatably mounted on the outside of the second rotating seat (505). A limit guide plate (502) is fixedly mounted on the upper end of the swing rod (501). The limit guide plate (502) is used to press the pressure plate (609). A foot pedal (503) is fixedly mounted on the lower end of the swing rod (501).

6. The adjustable torque multiplier calibration device according to claim 5, characterized in that: The swing rod (501) is provided with a connecting shaft (507) inside. A spring connecting rod (506) is rotatably installed between the connecting shaft (507) and the first rotating seat (504). The spring connecting rod (506) has a stronger elastic force than the return spring (605).

7. The adjustable torque multiplier calibration device according to claim 1, characterized in that: The adjustment mechanism (11) includes a gearbox (1103), an extension frame (1101) is fixedly installed on one side of the movable frame (3), a screw sleeve is provided inside the extension frame (1101), a handwheel (1104) is installed at the input end of the gearbox (1103), and a hand crank screw (1102) is fixedly installed at the output end of the gearbox (1103). The body of the hand crank screw (1102) is threadedly engaged with the screw sleeve inside the extension frame (1101).

8. The adjustable torque multiplier calibration device according to claim 1, characterized in that: The torque multiplier fixing plate (101) has a through hole (103) in the middle. The through hole (103) is used to connect the torque multiplier to the torque limiter (10) below. A force arm placement groove (104) is opened on one side of the through hole (103). The force arm placement groove (104) is used to place the reaction force arm of the torque multiplier.

9. The adjustable torque multiplier calibration device according to claim 8, characterized in that: The lever arm placement groove (104) is equipped with clamping plates (1044) that are slidably installed on both sides inside. The clamping plates (1044) are used to clamp and position the reaction lever arm of the torque multiplier. The multiplier fixing plate (101) is fixedly installed with a rotating frame (1041) on the outside. The rotating frame (1041) is rotatably installed with a positive and negative screw rod (1042). The rod body of the positive and negative screw rod (1042) is located inside the lever arm placement groove (104) and the rod body is threadedly engaged with the clamping plates (1044) on both sides. An adjustment groove (1043) is provided on the lower side of the lever arm placement groove (104), and a transmission groove (105) is provided on one side of the lever arm placement groove (104). A second bevel gear shaft (1053) is rotatably installed on the upper side of the transmission groove (105), and a first bevel gear shaft (1052) is rotatably installed on the lower side of the transmission groove (105). The first bevel gear shaft (1052) and the second bevel gear shaft (1053) mesh with each other to drive the locking sleeve (1051) to move to adapt to the reaction lever screw hole of different specifications. The shaft body of the first bevel gear shaft (1052) is provided with a thread. The locking sleeve (1051) is slidably installed inside the adjustment groove (1043). A screw hole is provided at the bottom of the locking sleeve (1051). The thread of the shaft body of the first bevel gear shaft (1052) is threaded with the screw hole at the bottom of the locking sleeve (1051).

10. The adjustable torque multiplier calibration device according to claim 1, characterized in that: The main controller (4) includes a power control module, a data acquisition module, a data processing and storage module, a human-machine interaction module and a data export module. Each module is connected via cable or network communication. The main controller (4) adopts an industrial-grade PLC controller. The main controller (4) is used to receive operation instructions from the human-machine interaction module, control the operation of the power control module, and coordinate the data acquisition, processing, storage and export process.

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