Friction torque measuring device for ball screw pair

Abstract

The utility model belongs to the field of screw measuring devices, and particularly relates to a friction torque measuring device for a ball screw pair, which comprises a working platform. A mounting cavity is formed in one side of the top of the working platform, a lead screw driving assembly is mounted in the mounting cavity, through holes are symmetrically formed in the bottom of the side wall of the mounting cavity, control assemblies are mounted in the through holes, a control module is fixedly mounted at the bottom of the mounting cavity, and first linear modules are symmetrically and fixedly connected to the side, away from the mounting cavity, of the top of the working platform. A fixing plate is fixedly installed at the sliding ends of the two first linear modules, an auxiliary fixing assembly is cooperatively installed at the top of the fixing plate, a second linear module is fixedly installed at the position, between the two first linear modules, of the top of the working platform, and a measuring mechanism is fixedly installed at the sliding end of the second linear module; a screw nut is installed on the measuring mechanism, a control panel is fixedly installed on the side wall of the working platform, and the function of rapidly adjusting the height of the fixing base by stepping on different control assemblies is achieved.

Description

Technical Field

[0001] The utility model relates to the field of screw measuring devices, in particular to a friction torque measuring device for a ball screw pair. Background Art

[0002] The friction torque measuring device for ball screw pair is a device for measuring the friction torque of ball screw pair. This device usually includes a torque sensor for applying torque and a measuring instrument for measuring torque. During the test, the device will apply a certain torque to the ball screw pair, and measure the applied torque and the torsion angle of the screw. The friction torque of the ball screw pair can be calculated through these data. The existing utility model patent for a ball screw pair friction torque measuring device (publication number: CN219416525U) changes the traditional force transmission rod to a smaller measuring force arm, thereby ensuring that the force sensor can collect a more accurate friction force change signal; in addition, since the mass of the force transmission tooling installed on the screw nut is small, the additional impact on the screw is minimized.

[0003] When the existing device is used, when adjusting the screw drive mechanism, the bottom fixing seat is replaced for adjustment. When adjusting, the bolts or other parts need to be disassembled for replacement and adjustment, which wastes time and manpower and affects work efficiency. Therefore, in order to solve the above problem, a friction torque measuring device for a ball screw pair is proposed. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art, when the existing device is used, when adjusting the screw drive mechanism, the bottom fixing seat is replaced for adjustment. When adjusting, the bolts or other parts need to be disassembled for replacement and adjustment, which wastes time and manpower and affects work efficiency. The utility model proposes a friction torque measuring device for a ball screw pair.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a friction torque measuring device for a ball screw pair, comprising a working platform; an installation cavity is opened on one side of the top of the working platform, a screw drive component is installed in the installation cavity, through holes are symmetrically opened on the bottom of the side wall of the installation cavity, a control component is installed in the through hole, a control module is fixedly installed on the bottom of the installation cavity, a first linear module is symmetrically fixedly connected to the side of the top of the working platform away from the installation cavity, a fixing plate is fixedly installed on the sliding ends of the two first linear modules, an auxiliary fixing component is installed on the top of the fixing plate, a second linear module is fixedly installed on the top of the working platform between the two first linear modules, a measuring mechanism is fixedly installed on the sliding end of the second linear module, a screw nut is installed on the measuring mechanism, and a control panel is fixedly installed on the side wall of the working platform;

[0006] The control component includes a connecting plate and a connecting frame, and sliding grooves are respectively provided on the inner walls on both sides of the through hole that are symmetrical to each other, and connecting plates are slidably installed in the two sliding grooves, a pedal is fixedly installed on the side of the connecting plate away from the working platform, and a pressure frame is fixedly installed on the side of the connecting plate close to the working platform, and connecting columns are fixedly installed on the bottom of the pressure frame, and a sliding plate is fixedly installed on the bottom of the connecting plate. A plurality of first springs are evenly distributed on the bottom of the sliding plate, and a plurality of the first springs are fixedly installed on the bottom of the inner wall of the connecting frame on the side away from the connecting plate, and the connecting frame is fixedly installed on the bottom of the inner wall of the through hole, and pressure sensors are fixedly installed on the side of the bottom of the installation cavity close to the two pressure frames.

[0007] Preferably, the perpendicular bisector of the connecting column in the vertical direction coincides with the perpendicular bisector of the pressure sensor in the vertical direction.

[0008] Preferably, the screw drive assembly includes a screw drive machine and a fixed seat, and the inner walls on both sides of the installation cavity are symmetrical to each other, respectively providing limit grooves, and a fixed seat is slidably installed in the two limit grooves, and a screw drive machine is fixedly installed on the top of the fixed seat, and a coupling is fixedly installed on the power output end of the screw drive machine, and a ball screw to be tested is clamped on the coupling.

[0009] Preferably, a mounting groove is provided on the inner wall of the mounting cavity on a side symmetrical to the through hole, a motor is fixedly installed on the bottom of the mounting groove, a threaded rod is fixedly installed on the power output shaft of the motor, the threaded rod is rotatably installed on the inner wall of the mounting groove on the side away from the motor, a moving block is threadedly connected to the threaded rod, a fixing seat is fixedly installed on the side wall of the moving block, the motor is electrically connected to a control module, and the control module is electrically connected to a pressure sensor.

[0010] Preferably, the auxiliary fixing assembly includes a connecting block, a connecting block is fixedly installed on the top of the fixing plate, a hydraulic telescopic shaft is fixedly installed on the side of the connecting block close to the fixing seat, a thimble is fixedly installed on the telescopic end of the hydraulic telescopic shaft, and the tip of the thimble is in conflict with the ball screw to be tested.

[0011] Preferably, the outer wall of the ball screw to be measured is threadedly connected with a screw nut, a cleaning assembly is mounted on the screw nut, and the screw nut is fixedly mounted on the measuring mechanism.

[0012] Preferably, the cleaning assembly comprises two sleeves, a sliding rod and an arc frame, sponge pads are fixedly installed on the sides of the two arc frames close to each other, and plug-in grooves are respectively opened on the two arc frames, sleeves are symmetrically fixedly installed on both sides of the fixed outer wall of the screw nut, the sleeve penetrates the outer wall of the screw nut and extends to one side, the plug-in groove is slidably installed on the outer wall of the sleeve, and the plug-in interface is slidably installed on the inner wall of the sleeve, and a turnover plate is fixedly installed on the side of the plug-in interface close to the extended end of the sleeve, the plug-in interface is opened on the side wall of the sliding rod away from the turnover plate, and a turnover frame is fixedly fixed on the side of the outer wall of the screw nut away from the two sleeve extended ends, a second spring is fixedly installed on the bottom of the inner wall of the turnover frame, and a plug-in block is fixedly installed on the top of the second spring, a movable groove is opened on the side wall of the turnover frame, a pulling plate is slidably installed in the movable groove, and the pulling plate is fixedly installed on the plug-in block.

[0013] Preferably, the bottom of the inner wall of the pedal frame is provided with anti-skid grooves, and the top of the pedal is provided with anti-skid grooves.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model adopts the structural design of the control component and the screw drive component. During use, when the height of the screw drive needs to be adjusted, the staff puts the foot into the stepping frame and steps on the stepping frame and the pedal. When the pedal and the stepping frame are under pressure, the sliding plate will be driven to move downward to squeeze the first spring. At the same time, the connecting column fixedly installed at the bottom of the stepping frame will squeeze the pressure sensor. When the pressure sensor is squeezed, it will transmit a signal to the control module. When the control module receives the signal, it will start the motor and drive the threaded rod to rotate. At this time, the moving block threadedly connected to the threaded rod will drive the fixed seat to move up and down, realizing the function of quickly adjusting the height of the fixed seat by stepping on different control components. This solves the problem that when the existing device is in use, when the screw drive is adjusted, the bottom fixed seat is replaced for adjustment. When adjusting, bolts or other parts need to be disassembled for replacement and adjustment, which wastes time and manpower in operation and affects work efficiency.

[0016] 2. The utility model adopts the structural design of the cleaning component. When in use, after the ball screw to be tested is threadedly sleeved with the screw nut, the connecting groove on the arc frame is connected with the sleeve, and the sliding rod is then inserted into the inner wall of the sleeve until the turnover plate and the outer wall of the arc frame are in contact with each other. At the same time, the pulling plate is pulled to drive the connecting block downward. When the turnover plate and the arc frame are fully in contact with each other, the plug-in interface will be located directly above the connecting block. At this time, the pressure on the pulling plate is released, and the plug-in block will move upward under the action of the second spring and engage with the plug-in interface, thereby realizing the function of cleaning the surface of the ball screw to be tested when detecting the ball screw to be tested, facilitating the replacement of the cleaning component, and solving the problem that the existing device needs to manually clean the ball screw to be tested when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a left sectional structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the assembly structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the assembly structure of the cleaning mechanism of the utility model;

[0022] Figure 5 For the utility model Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 6 For the utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 7 For the utility model Figure 4 Schematic diagram of the enlarged structure at C in the middle.

[0025] In the figure: 1. working platform; 2. control panel; 3. control assembly; 301. connecting plate; 302. stepping frame; 303. pedal; 304. sliding plate; 305. first spring; 306. connecting frame; 307. connecting column; 4. screw drive assembly; 401. screw drive machine; 402. fixing seat; 403. threaded rod; 404. motor; 405. moving block; 5. auxiliary fixing assembly; 501. connecting block; 502. hydraulic telescopic shaft; 503. ejector pin; 6. first linear module; 7. second linear module; 8. waiting Measuring ball screw; 9. Cleaning assembly; 901. Sleeve; 902. Arc frame; 903. Plug-in slot; 904. Sponge pad; 905. Turnover plate; 906. Sliding rod; 907. Plug interface; 908. Turnover frame; 909. Second spring; 9010. Plug-in block; 9011. Pull plate; 9012. Moving slot; 10. Measuring mechanism; 11. Screw nut; 12. Mounting cavity; 13. Limiting slot; 14. Control module; 15. Sliding slot; 16. Mounting slot; 17. Fixing plate; 18. Pressure sensor; 19. Through hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] The following is combined with Figure 1 —7 further details of this application,

[0028] The present application discloses a friction torque measuring device for a ball screw pair. Figure 1-7A friction torque measuring device for a ball screw pair includes a working platform 1; a mounting cavity 12 is provided on one side of the top of the working platform 1, a screw drive assembly 4 is installed in the mounting cavity 12, through holes 19 are symmetrically provided on the bottom of the side wall of the mounting cavity 12, a control assembly 3 is installed in the through hole 19, a control module 14 is fixedly installed at the bottom of the mounting cavity 12, and a first linear module 6 is symmetrically fixedly connected to one side of the top of the working platform 1 away from the mounting cavity 12, The first linear module 6 has the same working principle and structure as the existing utility model patent, a long-stroke linear motor module with a built-in drag chain, and will not be described in detail here. A fixed plate 17 is fixedly installed on the sliding ends of the two first linear modules 6, and an auxiliary fixing component 5 is installed on the top of the fixed plate 17. The top of the working platform 1 is located between the two first linear modules 6 and a second linear module 7 is fixedly installed. The second linear module 7 has the same working principle and structure as the existing utility model patent, a long-stroke linear motor module with a built-in drag chain, and will not be described in detail here. A measuring mechanism 10 is fixedly installed on the sliding end of the second linear module 7, and a lead screw nut 11 is installed on the measuring mechanism 10. A control panel 2 is fixedly installed on the side wall of the working platform 1, and the control panel 2 is used to control all electrical equipment in the device;

[0029] The control component 3 includes a connecting plate 301 and a connecting frame 306, which realizes the function of quickly adjusting the height of the fixed seat 402 by stepping on different control components 3. The two control components 3 control different directions of the motor 404. The inner walls on both sides of the through hole 19 are symmetrically provided with sliding grooves 15, and the connecting plates 301 are slidably installed in the two sliding grooves 15. The side of the connecting plate 301 away from the working platform 1 is fixedly installed with a pedal 303, and the side of the connecting plate 301 close to the working platform 1 is fixedly installed with a pressing frame 302, and the bottom of the pressing frame 302 is respectively fixedly installed with connecting columns 307, and the bottom of the connecting plate 301 is fixedly installed with a sliding plate 304, and a plurality of first springs 305 are evenly distributed on the bottom of the sliding plate 304. The plurality of first springs 305 are fixedly installed on the bottom of the inner wall of the connecting frame 306 away from the side of the connecting plate 301, and the connecting frame 306 is fixedly installed on the bottom of the inner wall of the through hole 19. The bottom of the installation cavity 12 is respectively fixedly installed with a pressure sensor 18 on one side close to the two pressing frames 302.

[0030] Reference Figure 2 The vertical median line of the connecting column 307 coincides with the vertical median line of the pressure sensor 18, so that the connecting column 307 can accurately squeeze the pressure sensor 18 when moving downward.

[0031] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6The screw drive assembly 4 includes a screw drive machine 401 and a fixed seat 402, which realizes the function of cleaning the surface of the ball screw 8 to be tested when detecting the ball screw 8 to be tested, and is convenient for replacing the cleaning assembly 9. The inner walls on both sides of the installation cavity 12 are symmetrical to each other, and a fixed seat 402 is slidably installed in the two limit grooves 13. A screw drive machine 401 is fixedly installed on the top of the fixed seat 402. A coupling is fixedly installed on the power output end of the screw drive machine 401, and the ball screw 8 to be tested is clamped on the coupling.

[0032] Reference Figure 1 , Figure 2 , Figure 3 and Figure 6 A mounting groove 16 is provided on the inner wall of the mounting cavity 12 on a side symmetrical to the through hole 19, a motor 404 is fixedly installed at the bottom of the mounting groove 16, a threaded rod 403 is fixedly installed on the power output shaft of the motor 404, the threaded rod 403 is rotatably installed on the inner wall of the mounting groove 16 away from the motor 404, a moving block 405 is threadedly connected to the threaded rod 403, a fixing seat 402 is fixedly installed on the side wall of the moving block 405, the motor 404 is electrically connected to the control module 14, and the control module 14 is electrically connected to the pressure sensor 18.

[0033] Reference Figure 2 and Figure 3 The auxiliary fixing assembly 5 includes a connecting block 501, the connecting block 501 is fixedly installed on the top of the fixing plate 17, a hydraulic telescopic shaft 502 is fixedly installed on the side of the connecting block 501 close to the fixing seat 402, and a ejector pin 503 is fixedly installed on the telescopic end of the hydraulic telescopic shaft 502, and the tip of the ejector pin 503 conflicts with the ball screw 8 to be tested.

[0034] Reference Figure 1 and Figure 2 The outer wall of the ball screw 8 to be measured is threadedly connected with a screw nut 11, and a cleaning assembly 9 is installed on the screw nut 11. The screw nut 11 is fixedly installed on the measuring mechanism 10. The measuring mechanism 10 has the same working principle and structure as the measuring mechanism in the existing utility model patent, a ball screw pair friction torque measuring device (publication number: CN219416525U), and will not be described in detail here.

[0035] Reference Figure 4 and Figure 7The cleaning assembly 9 includes two sleeves 901, a sliding rod 906 and an arc frame 902. Sponge pads 904 are fixedly installed on the sides of the two arc frames 902 close to each other. Insertion grooves 903 are respectively opened on the two arc frames 902. Sleeves 901 are symmetrically fixedly installed on both sides of the fixed outer wall of the screw nut 11. The sleeve 901 penetrates the outer wall of the screw nut 11 and extends to one side. The inserting groove 903 is slidably installed on the outer wall of the sleeve 901, and the inner wall of the sleeve 901 is slidably installed with an inserting interface 907. The inserting interface 907 is close to the extension end of the sleeve 901. A turnover plate 905 is fixedly installed on the side, and an insertion port 907 is provided on the side wall of the sliding rod 906 away from the turnover plate 905. A turnover frame 908 is fixedly fixed on one side of the outer wall of the screw nut 11 away from the extending ends of the two sleeves 901. A second spring 909 is fixedly installed on the bottom of the inner wall of the turnover frame 908, and a plug-in block 9010 is fixedly installed on the top of the second spring 909. A movable groove 9012 is provided on the side wall of the turnover frame 908, and a pulling plate 9011 is slidably installed in the movable groove 9012, and the pulling plate 9011 is fixedly installed on the plug-in block 9010.

[0036] Reference Figure 5 The bottom of the inner wall of the pressing frame 302 is provided with anti-skid grooves, and the top of the pedal 303 is provided with anti-skid grooves to prevent the staff from slipping when pressing.

[0037] Working principle: When in use, first power on all electrical equipment in the device. During use, when the height of the screw drive machine 401 needs to be adjusted, the staff puts the foot into the stepping frame 302 and steps on the stepping frame 302 and the pedal 303. When the pedal 303 and the stepping frame 302 are under pressure, the sliding plate 304 will be driven to move downward to squeeze the first spring 305. At the same time, the connecting column 307 fixedly installed at the bottom of the stepping frame 302 will squeeze the pressure sensor 18. When the pressure sensor 18 is squeezed, a signal is transmitted to the control module 14. When the control module 14 receives the signal, it will start the motor 404 and drive the threaded rod 403 to rotate. At this time, the moving block 405 threadedly connected to the threaded rod 403 will drive the fixed seat 402 to move up and down, realizing the function of quickly adjusting the height of the fixed seat 402 by stepping on different control components 3;

[0038] When installing the ball screw 8 to be tested, first clamp the ball screw 8 to be tested on the coupling. After adjusting the height, start the first linear module 6 to drive the fixed plate 17 and the connecting block 501 to perform linear motion to adapt to the different lengths of the ball screw 8 to be tested. The hydraulic telescopic shaft 502 is used to make up for the length of the ejector pin 503. When the ejector pin 503 contacts the ball screw 8 to be tested, it plays a role in auxiliary support of the ball screw 8 to be tested.

[0039] When in use, after the ball screw 8 to be tested is threadedly sleeved with the screw nut 11, the connecting groove 903 on the arc frame 902 is connected with the sleeve 901, and the sliding rod 906 is inserted into the inner wall of the sleeve 901 until the turnover plate 905 and the outer wall of the arc frame 902 are in contact with each other. At the same time, the pulling plate 9011 is pulled to drive the connecting block 9010 downward. When the turnover plate 905 and the arc frame 902 are fully in contact with each other, the plug-in interface 907 will be located directly above the plug-in block 9010. At this time, the pressure on the pulling plate 9011 is released, and the plug-in block 9010 will move upward under the action of the second spring 909 and engage with the plug-in interface 907, thereby realizing the function of cleaning the surface of the ball screw 8 to be tested when testing the ball screw 8, thereby facilitating the replacement of the cleaning component 9.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A friction torque measuring device for a ball screw pair, characterized in that: The working platform (1) comprises a working platform (1); a mounting cavity (12) is provided on one side of the top of the working platform (1), a screw drive assembly (4) is installed in the mounting cavity (12), a through hole (19) is symmetrically provided on the bottom of the side wall of the mounting cavity (12), a control assembly (3) is installed in the through hole (19), a control module (14) is fixedly installed at the bottom of the mounting cavity (12), a first linear module (6) is symmetrically fixedly connected to the side of the top of the working platform (1) away from the mounting cavity (12), a fixing plate (17) is fixedly installed on the sliding ends of the two first linear modules (6), an auxiliary fixing assembly (5) is installed on the top of the fixing plate (17), a second linear module (7) is fixedly installed on the top of the working platform (1) between the two first linear modules (6), a measuring mechanism (10) is fixedly installed on the sliding end of the second linear module (7), a screw nut (11) is installed on the measuring mechanism (10), and a control panel (2) is fixedly installed on the side wall of the working platform (1); The control assembly (3) comprises a connecting plate (301) and a connecting frame (306); the inner walls of the through hole (19) on both sides symmetrical to each other are respectively provided with sliding grooves (15); the connecting plates (301) are slidably mounted in the two sliding grooves (15); a pedal (303) is fixedly mounted on the side of the connecting plate (301) away from the working platform (1); a stepping frame (302) is fixedly mounted on the side of the connecting plate (301) close to the working platform (1); and connecting plates (303) are fixedly mounted on the bottom of the stepping frame (302). The connecting plate (301) is provided with a sliding plate (304) fixedly mounted on the bottom of the connecting plate (301), a plurality of first springs (305) are evenly distributed on the bottom of the sliding plate (304), a side of the plurality of first springs (305) away from the connecting plate (301) is fixedly mounted on the bottom of the inner wall of the connecting frame (306), the connecting frame (306) is fixedly mounted on the bottom of the inner wall of the through hole (19), and a pressure sensor (18) is fixedly mounted on one side of the bottom of the mounting cavity (12) close to the two stepping frames (302).

2. The friction torque measuring device for a ball screw pair according to claim 1, characterized in that: The perpendicular midline of the connecting column (307) in the vertical direction coincides with the perpendicular midline of the pressure sensor (18) in the vertical direction.

3. The friction torque measuring device for a ball screw pair according to claim 1, characterized in that: The screw drive assembly (4) comprises a screw drive machine (401) and a fixed seat (402); two symmetrical inner walls of the installation cavity (12) are respectively provided with limit grooves (13); a fixed seat (402) is slidably mounted in the two limit grooves (13); a screw drive machine (401) is fixedly mounted on the top of the fixed seat (402); a coupling is fixedly mounted on the power output end of the screw drive machine (401); and a ball screw (8) to be tested is clamped on the coupling.

4. The friction torque measuring device for a ball screw pair according to claim 3, characterized in that: A mounting groove (16) is provided on the inner wall of the mounting cavity (12) on a side symmetrical to the side where the through hole (19) is provided. A motor (404) is fixedly installed at the bottom of the mounting groove (16). A threaded rod (403) is fixedly installed on the power output shaft of the motor (404). The threaded rod (403) is rotatably installed on the inner wall of the mounting groove (16) at a side away from the motor (404). A moving block (405) is threadedly connected to the threaded rod (403). A fixing seat (402) is fixedly installed on the side wall of the moving block (405). The motor (404) is electrically connected to a control module (14), and the control module (14) is electrically connected to a pressure sensor (18).

5. The friction torque measuring device for a ball screw pair according to claim 1, characterized in that: The auxiliary fixing assembly (5) comprises a connecting block (501), the connecting block (501) being fixedly mounted on the top of the fixing plate (17), a hydraulic telescopic shaft (502) being fixedly mounted on a side of the connecting block (501) close to the fixing seat (402), a thimble (503) being fixedly mounted on the telescopic end of the hydraulic telescopic shaft (502), and a tip of the thimble (503) being in contact with the ball screw (8) to be tested.

6. The friction torque measuring device for a ball screw pair according to claim 5, characterized in that: The outer wall of the ball screw (8) to be measured is threadedly connected to a screw nut (11), a cleaning assembly (9) is mounted on the screw nut (11), and the screw nut (11) is fixedly mounted on the measuring mechanism (10).

7. The friction torque measuring device for a ball screw pair according to claim 6, characterized in that: The cleaning assembly (9) comprises two sleeves (901), a sliding rod (906) and an arc frame (902), a sponge pad (904) being fixedly mounted on one side of the two arc frames (902) close to each other, a plug-in groove (903) being respectively opened on the two arc frames (902), sleeves (901) being symmetrically fixedly mounted on both sides of the fixed outer wall of the screw nut (11), the sleeve (901) passing through the outer wall of the screw nut (11) and extending to one side, a plug-in groove (903) being slidably mounted on the outer wall of the sleeve (901), a plug-in interface (907) being slidably mounted on the inner wall of the sleeve (901), and the plug-in interface (907) extending close to the sleeve (901). A turnover plate (905) is fixedly installed on one side of the end, and an insertion interface (907) is provided on the side wall of the sliding rod (906) away from the turnover plate (905). A turnover frame (908) is fixedly fixed on one side of the outer wall of the screw nut (11) away from the extension end of the two sleeves (901). A second spring (909) is fixedly installed on the bottom of the inner wall of the turnover frame (908), and a plug-in block (9010) is fixedly installed on the top of the second spring (909). A movable groove (9012) is provided on the side wall of the turnover frame (908), and a pulling plate (9011) is slidably installed in the movable groove (9012), and the pulling plate (9011) is fixedly installed on the plug-in block (9010).

8. The friction torque measuring device for a ball screw pair according to claim 1, characterized in that: The bottom of the inner wall of the stepping frame (302) is provided with anti-skid grooves, and the top of the pedal (303) is provided with anti-skid grooves.

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