Magnetic torque centering device

Abstract

A magnetic torque centering device, including a base plate, the lower front side wall center is equipped with a valve assembly group fixed mechanism, the valve assembly fixed mechanism is equipped with the matched valve assembly group, the valve assembly group includes a valve core, the valve core middle part is equipped with the matched valve core clamping block, the left and right sides of the lower front side wall of the base plate is equipped with the left linear rail and right linear rail that are symmetrical with each other, the left linear rail is equipped with the matched left dial gauge, the right linear rail is equipped with the matched right dial gauge, and the left dial gauge and the right dial gauge are symmetrical with each other, the measuring head of the left dial gauge is pressed on the left surface of the valve core clamping block, and the measuring head of the right dial gauge is pressed on the right surface of the valve core clamping block, the front end of the valve core is equipped with the matched spline sleeve, the magnetic torque centering device can be detected on line, and high-precision and high-efficiency valve assembly centering alignment effect is realized.

Description

Technical Field

[0001] This utility model relates to the field of online testing technology for automotive steering systems, and in particular to a magnetic torque alignment device. Background Technology

[0002] As one of the important components of a car, the performance of the steering system directly affects the vehicle's handling stability, comfort, safety, and reliability during driving. Similarly, the performance of the steering system plays a crucial role in safe driving, reducing traffic accidents, protecting the driver's personal safety, and improving the driver's working conditions.

[0003] To improve steering ease at low speeds and handling stability at high speeds, power steering systems are now widely used in automobiles. With the rapid development of modern automotive technology, new technologies are constantly being adopted. Currently, a hydraulic magnetic torque power steering system has been developed based on the hydraulic power steering system. The core component of the hydraulic magnetic torque power steering system is the valve assembly. In the entire hydraulic magnetic torque power steering system, the magnetic torque alignment on the valve assembly is the biggest challenge. Because the magnetic field strength is invisible and intangible, and the accuracy requirements for alignment are very high, the left and right torque difference of a qualified product should not exceed 0.4 Nm. Therefore, magnetic torque alignment technology is difficult to achieve efficient and accurate online detection and adjustment due to the invisible magnetic field and high accuracy requirements. If the alignment accuracy is too low, the driver will feel that the steering is heavier on one side and lighter on the other, which will cause the car to veer off course during driving, and in severe cases, it may even cause traffic accidents. Utility Model Content

[0004] The present invention aims to solve the existing technical problem by providing a magnetic torque alignment device that can perform online detection and achieve high-precision and high-efficiency valve assembly alignment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: This utility model discloses a magnetic torque alignment device, including a base plate. A valve assembly fixing mechanism is provided at the center of the lower front sidewall of the base plate. A matching valve assembly is mounted on the valve assembly fixing mechanism. The valve assembly includes a valve core, and a matching valve core clamping block is fixed in the middle of the valve core. A left and right linear rail are provided on the left and right sides of the lower front sidewall of the base plate, respectively. A matching left dial indicator is provided on the left linear rail, and a matching right dial indicator is provided on the right linear rail. The left and right dial indicators... The components are symmetrical; the probe of the left dial indicator presses against the left surface of the valve core clamping block, and the probe of the right dial indicator presses against the right surface of the valve core clamping block; the front end of the valve core is provided with a matching spline sleeve; the front side of the base plate has a digital torque wrench; the lower end of the digital torque wrench has a sleeve that is locked outside the spline sleeve; the upper front side wall of the base plate has symmetrical support plates on both sides; a position adjustment mechanism is provided between the front ends of the left and right support plates; the position adjustment mechanism includes a movable block that is movably connected to the upper end of the digital torque wrench.

[0006] The valve assembly fixing mechanism also includes a valve body base located at the center of the front side wall of the lower part of the base plate; the valve body base has a matching valve body at its front end; the front end face of the valve body has a mounting groove matching the valve assembly; a multi-pole magnetic ring adjusting block outside the valve core is provided in the front groove of the mounting groove; a multi-pole magnetic ring outside the valve core is provided at the rear end of the multi-pole magnetic ring adjusting block; the left and right outer walls of the front end of the valve body are provided with adjusting screw holes that communicate with the mounting groove; a matching adjusting screw is screwed into the adjusting screw hole, and the inner end of the adjusting screw presses against the outer wall of the multi-pole magnetic ring adjusting block.

[0007] The right end of the mounting groove extends to the valve body base; a U-shaped gear clamping block is provided on the valve body base, and the internal space of the gear clamping block is in communication with the right end of the mounting groove; the valve assembly also includes a gear located at the rear end of the valve core, and the gear passes through the internal space of the gear clamping block; the left and right sides of the gear clamping block are connected by clamping screws.

[0008] The valve core clamping block has symmetrical lugs on the left and right sides of its upper end face, and the valve core passes through the gap between the lugs on the left and right sides; the upper ends of the lugs on the left and right sides are connected and fixed by locking screws.

[0009] The position adjustment mechanism includes a left bearing seat located at the front end of the left support plate; a right bearing seat located at the front end of the right support plate; a screw rod located between the left and right bearing seats; an adjustment screw hole located on the movable block for screwing the screw rod; a left rotating shaft located at the center of the left end face of the screw rod, and a right rotating shaft located at the center of the right end face of the screw rod; a left bearing matching the left rotating shaft located on the left bearing seat; a right bearing matching the right rotating shaft located on the right bearing seat; and a handwheel located at the right end of the right rotating shaft.

[0010] The digital torque wrench has a limiting block at its upper end; the rear end face of the limiting block has a groove that matches the upper end of the digital torque wrench; the rear end face of the limiting block has a pressure plate that matches it; the pressure plate and the limiting block are fixed together by several evenly distributed fixing screws; a rotating head is provided at the center of the rear end face of the pressure plate; a front bearing hole is provided at the center of the front end face of the movable block; a front bearing fitted outside the rotating head is provided in the front bearing hole.

[0011] This utility model has the following beneficial effects: Compared with existing technologies, the magnetic torque alignment device with the structure of this utility model can convert the invisible magnetic field into a precise measurement of torque and displacement values ​​through the cooperation of a digital torque wrench and the left and right dial indicators. Operators can directly judge whether the torque difference between the left and right sides is within the acceptable range of 0.4 Nm through digital display, realizing the data-driven and visualized alignment process. It fundamentally overcomes the adjustment difficulties caused by the invisible magnetic field, eliminates the safety hazards caused by poor alignment at the source, and greatly improves the handling stability, safety and reliability of automobiles. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the magnetic torque alignment device of this utility model when viewed from the front. Figure 2 yes Figure 1 An enlarged view of part A; Figure 3 This is a schematic diagram of the magnetic torque centering device of this utility model when viewed from the right. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Please see Figures 1 to 3This utility model provides a magnetic torque centering device, including a base plate 1. A valve assembly fixing mechanism is provided at the center of the lower front side wall of the base plate 1. A valve assembly assembly 2 is mounted on the valve assembly fixing mechanism. The valve assembly assembly 2 includes a valve core 201, and a valve core clamping block 3 is fixed in the middle of the valve core 201. A left linear rail 4 and a right linear rail 5 are provided on the left and right sides of the lower front side wall of the base plate 1, which are symmetrical to each other. A left dial indicator 6 is provided on the left linear rail 4, and a right dial indicator 7 is provided on the right linear rail 5. The left dial indicator 6 and the right dial indicator 7 are symmetrical to each other. The probe 601 of the left dial indicator 6 presses against the left surface of the valve core clamping block 3, and the probe 701 of the right dial indicator 7 presses against the right surface of the valve core clamping block 3; the valve core 201 has a matching spline sleeve 202 at its front end; the base plate 1 has a digital torque wrench 8 on its front side; the lower end of the digital torque wrench 8 has a sleeve 801 that is locked outside the spline sleeve 202; the upper front side wall of the base plate 1 has symmetrical support plates 9 on its left and right sides; a position adjustment mechanism is provided between the front ends of the support plates 9 on the left and right sides; the position adjustment mechanism includes a movable block 10 that is movably connected to the upper end of the digital torque wrench 8.

[0014] The valve assembly fixing mechanism also includes a valve body base 11 located at the center of the lower front side wall of the base plate 1; the valve body base 11 has a matching valve body 12 at its front end; the front end face of the valve body 12 has a mounting groove 13 matching the valve assembly 2; a multi-pole magnetic ring adjusting block 14 is provided in the front groove of the mounting groove 13 and is attached to the valve core 201; a multi-pole magnetic ring 15 is provided at the rear end of the multi-pole magnetic ring adjusting block 14 and is attached to the valve core 201; the left and right outer walls of the front end of the valve body 12 are provided with adjusting screw holes 16 that communicate with the mounting groove 13; a matching adjusting screw 17 is screwed into the adjusting screw hole 16 and the inner end of the adjusting screw 17 presses against the outer wall of the multi-pole magnetic ring adjusting block 14.

[0015] The right end of the mounting groove 13 extends to the valve body base 11; a U-shaped gear clamping block 19 is provided on the valve body base 11, and the internal space of the gear clamping block 19 communicates with the right end of the mounting groove 13; the valve assembly 2 also includes a gear 203 located at the rear end of the valve core 201, and the gear 203 passes through the internal space of the gear clamping block 19; the left and right sides of the gear clamping block 19 are connected by clamping screws 21.

[0016] The valve core clamping block 3 has symmetrical lugs 301 on the left and right sides of its upper end face, and the valve core 201 passes through the gap between the lugs 301 on the left and right sides; the upper ends of the lugs 301 on the left and right sides are connected and fixed by locking screws.

[0017] The position adjustment mechanism includes a left bearing seat 23 located at the front end of the left support plate 9; a right bearing seat 24 located at the front end of the right support plate 9; a screw 25 located between the left bearing seat 23 and the right bearing seat 24; an adjustment screw hole 26 located on the movable block 10 and screwed to the screw 25; a left rotation shaft 27 located at the center of the left end face of the screw 25, and a right rotation shaft 28 located at the center of the right end face of the screw 25; a left bearing 29 located on the left bearing seat 23 and matching the left rotation shaft 27; a right bearing 30 located on the right bearing seat 24 and matching the right rotation shaft 28; and a handwheel 31 located at the right end of the right rotation shaft 28.

[0018] The digital torque wrench 8 has a limiting block 32 at its upper end; the rear end face of the limiting block 32 is provided with a groove 33 that matches the upper end of the digital torque wrench 8; the rear end face of the limiting block 32 is provided with a pressure plate 34 that matches it; the pressure plate 34 and the limiting block 32 are fixed together by a number of evenly distributed fixing screws 35; a rotating head 36 is provided at the center of the rear end face of the pressure plate 34; a front bearing hole 37 is provided at the center of the front end face of the movable block 10; a front bearing 38 that is fitted inside the front bearing hole 37 and is located outside the rotating head 36.

[0019] The method of using this utility model is as follows: When magnetic torque alignment is required, the valve assembly 2 can be placed into the mounting slot 13 of the valve body 12 first, and then the gear 203 of the valve assembly 2 can be locked using the gear clamping block 19. With the valve core clamping block 3 installed on the valve core 201, the left dial indicator 6 and the right dial indicator 7 are located on the left and right sides of the valve core clamping block 3, respectively. The probe 601 of the left dial indicator 6 presses against the left surface of the valve core clamping block 3, and the probe 701 of the right dial indicator 7 presses against the right surface of the valve core clamping block 3. At the same time, the digital torque wrench 8 engages with the spline sleeve 202 at the front end of the valve core 201 through the sleeve 801. Then, the power can be turned on to activate the magnetic field of the multi-pole magnetic ring 15, and then the screw 25 can be rotated by the handwheel 31. When the screw 25 rotates, the movable block 10 can... The force of rotating the screw 25 is converted into a force for left and right movement. The upper end of the digital torque wrench 8 is hinged to the front end of the movable block 10 through the rotating head 36. When the movable block 10 moves left and right, the digital torque wrench 8 will swing left and right around the valve core 201. When the digital torque wrench 8 swings to the left, the valve core clamping block 3 swings to the left simultaneously, and the left dial indicator 6 displays the value. When the digital torque wrench 8 swings to the right, the valve core clamping block 3 swings to the right simultaneously, and the right dial indicator 7 displays the value. When the values ​​on the left dial indicator 6 and the right dial indicator 7 are the same, the torque values ​​on the two digital torque wrenches 8 are compared. If the difference between the left and right torques exceeds 0.4 Nm, the axial position of the multi-pole magnetic ring 15 can be finely adjusted by adjusting the screw 17 until the left and right torques are balanced, and finally the centering is completed.

[0020] In summary, this utility model can convert an invisible magnetic field into a precisely measurable torque and displacement value through the cooperation of a digital torque wrench 8 and the left and right dial gauges 6 and 7. Operators can directly judge whether the torque difference between the left and right sides is within the acceptable range of 0.4 Nm through digital display, realizing the data-driven and visualized alignment process. It fundamentally overcomes the adjustment difficulties caused by the invisible magnetic field, eliminates the safety hazards caused by poor alignment at the source, and greatly improves the vehicle's handling stability, safety, and reliability.

[0021] The valve body base 11 is fixed to the center of the base plate 1. The valve body 12 is precisely positioned by the mounting groove 13. The gear clamping block 19 is U-shaped and locks the gear 203 at the rear end of the valve core 201 by the clamping screw 21, thereby fixing the valve assembly 2 during the testing process, ensuring the stability and consistency of the testing benchmark, avoiding measurement errors caused by workpiece loosening, and providing a reliable assembly basis for high-precision alignment.

[0022] The valve core clamping block 3 holds the valve core 201 tightly through the lug 301 and the locking screw, so that it rotates synchronously with the valve core 201. When the valve core 201 rotates, the left dial gauge 6 and the right dial gauge 7 convert the rotation angle of the valve core 201 into a linear displacement reading, effectively realizing the precise quantification of the rotation angle. By comparing the displacement of the left and right dial gauges under the same torque, the symmetry of the left and right rotation angles of the valve core can be intuitively judged, providing a key prerequisite for torque balance judgment.

[0023] The presence of the left bearing 29 and the right bearing 30 not only effectively ensures the stability of the screw 25 during rotation, but also provides support, while ensuring the stability of the movable block 10 during movement.

[0024] The adjusting screws 17 on both sides can effectively fix the multi-pole magnetic ring adjusting block 14 on the valve body 12. When it is necessary to adjust the multi-pole magnetic ring 15, simply loosen the adjusting screw 17. Once the pressure inside the adjusting screw 17 is removed, the multi-pole magnetic ring adjusting block 14 can move the multi-pole magnetic ring 15 slightly along the valve core direction, thereby changing the axial position of the multi-pole magnetic ring 15 relative to the mechanical center of the valve core 201. After the position of the multi-pole magnetic ring 15 is adjusted, tighten the adjusting screw 17. By finely adjusting the axial position of the multi-pole magnetic ring 15, the balance state of the magnetic resistance experienced by the valve core 201 when rotating left and right can be changed. Therefore, when the torque difference between the left and right sides exceeds the standard, the torque values ​​of the left and right sides can be made to be consistent by adjusting the multi-pole magnetic ring 15.

[0025] A front bearing 38 is provided inside the front bearing hole 37 outside the rotating head 36. The presence of the front bearing 38 allows the digital torque wrench 8 to swing slightly around the rotating head 36, effectively solving the interference problem between the linear motion of the movable block 10 and the arc motion of the digital torque wrench 8 around the valve core 201.

Claims

1. A magnetic torque alignment device, comprising a base plate, characterized in that: A valve assembly fixing mechanism is provided at the center of the lower front sidewall of the base plate; a matching valve assembly is mounted on the valve assembly fixing mechanism; the valve assembly includes a valve core, and a matching valve core clamping block is fixed in the middle of the valve core; symmetrical left and right guide rails are provided on the left and right sides of the lower front sidewall of the base plate; a matching left dial indicator is provided on the left guide rail; a matching right dial indicator is provided on the right guide rail, and the left and right dial indicators are symmetrical to each other; the left dial indicator... The probe of the right dial indicator presses against the left surface of the valve core clamping block, and the probe of the right dial indicator presses against the right surface of the valve core clamping block; the front end of the valve core is provided with a matching spline sleeve; the front side of the base plate is provided with a digital torque wrench; the lower end of the digital torque wrench is provided with a sleeve that is locked outside the spline sleeve; the upper front side wall of the base plate is provided with symmetrical support plates on the left and right sides; a position adjustment mechanism is provided between the front ends of the left and right support plates; the position adjustment mechanism includes a movable block that is movably connected to the upper end of the digital torque wrench.

2. The magnetic torque alignment device according to claim 1, characterized in that: The valve assembly fixing mechanism also includes a valve body base located at the center of the front side wall of the lower part of the base plate; the valve body base has a matching valve body at its front end; the front end face of the valve body has a mounting groove matching the valve assembly; a multi-pole magnetic ring adjusting block outside the valve core is provided in the front groove of the mounting groove; a multi-pole magnetic ring outside the valve core is provided at the rear end of the multi-pole magnetic ring adjusting block; the left and right outer walls of the front end of the valve body are provided with adjusting screw holes that communicate with the mounting groove; a matching adjusting screw is screwed into the adjusting screw hole, and the inner end of the adjusting screw presses against the outer wall of the multi-pole magnetic ring adjusting block.

3. The magnetic torque alignment device according to claim 2, characterized in that: The right end of the mounting groove extends to the valve body base; a U-shaped gear clamping block is provided on the valve body base, and the internal space of the gear clamping block is in communication with the right end of the mounting groove; the valve assembly also includes a gear located at the rear end of the valve core, and the gear passes through the internal space of the gear clamping block; the left and right sides of the gear clamping block are connected by clamping screws.

4. The magnetic torque alignment device according to claim 1, characterized in that: The valve core clamping block has symmetrical lugs on the left and right sides of its upper end face, and the valve core passes through the gap between the lugs on the left and right sides; the upper ends of the lugs on the left and right sides are connected and fixed by locking screws.

5. A magnetic torque alignment device according to claim 1, characterized in that: The position adjustment mechanism includes a left bearing seat located at the front end of the left support plate; a right bearing seat located at the front end of the right support plate; a screw rod located between the left and right bearing seats; an adjustment screw hole located on the movable block for screwing the screw rod; a left rotating shaft located at the center of the left end face of the screw rod, and a right rotating shaft located at the center of the right end face of the screw rod; a left bearing matching the left rotating shaft located on the left bearing seat; a right bearing matching the right rotating shaft located on the right bearing seat; and a handwheel located at the right end of the right rotating shaft.

6. A magnetic torque alignment device according to claim 5, characterized in that: The digital torque wrench has a limiting block at its upper end; the rear end face of the limiting block has a groove that matches the upper end of the digital torque wrench; the rear end face of the limiting block has a pressure plate that matches it; the pressure plate and the limiting block are fixed together by several evenly distributed fixing screws; a rotating head is provided at the center of the rear end face of the pressure plate; a front bearing hole is provided at the center of the front end face of the movable block; a front bearing fitted outside the rotating head is provided in the front bearing hole.

Images