High-stability vehicle steering motor assembly

Abstract

The invention relates to the technical field of steering motors, and discloses a high-stability vehicle steering motor assembly which comprises a machine shell and a top cover, a stator and a rotor are arranged in the machine shell, a rotating shaft is installed in an inner cavity of the rotor, a belt pulley is connected to the top end of the rotating shaft, and a rear bearing and a front bearing are arranged at the joint of the rotating shaft and the machine shell and the joint of the rotating shaft and the top cover correspondingly. An I-shaped sleeve wall is fixedly connected to the inner wall of the machine shell, a liquid storage space is formed in a gap between the side wall of the I-shaped sleeve wall and the inner wall of the machine shell, a wall fixing block is fixedly connected to the side wall of the machine shell, a liquid inlet pipe and a liquid discharge pipe are arranged in the wall fixing block, and the liquid inlet pipe and the liquid discharge pipe are used for liquid injection and liquid discharge of the liquid storage space. The I-shaped sleeve wall is arranged to enable the casing to form the liquid storage space, and the cooling liquid is input into the liquid storage space for heat exchange, so that the motor can still keep a good heat dissipation effect under long-time high-load operation, performance reduction or faults caused by overheating are avoided, and the stability of long-time operation of the motor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steering motors, and more particularly to a high-stability vehicle steering motor assembly. Background Art

[0002] With the rapid development of the automotive industry and the accelerated advancement of the trend of intelligence and electrification, the optimization and upgrading of the performance of the automotive steering system as a key component of vehicle handling performance is particularly important. The traditional hydraulic power steering system is gradually being replaced by the electric power steering system (EPS) due to its limitations such as high energy consumption and complex maintenance. The electric power steering system can not only effectively reduce energy consumption and improve fuel economy, but also has the advantages of fast response speed and high steering accuracy. It is an important basis for realizing vehicle active safety and autonomous driving technology.

[0003] However, existing automotive steering motor assemblies still face some challenges in their design, such as thermal management issues when the motor is running at high speed for a long time, insufficient vibration and noise control, and durability and stability issues under high-intensity working environments. Especially in complex and changeable road conditions and extreme weather environments, the stability of the steering motor is directly related to driving safety and passenger comfort. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-stability vehicle steering motor assembly to solve the problem of insufficient stability of the traditional vehicle steering motor in the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: a high-stability vehicle steering motor assembly, comprising a casing and a top cover, wherein a stator and a rotor are arranged inside the casing, a rotating shaft is installed in the inner cavity of the rotor, a pulley is connected to the top end of the rotating shaft, a rear bearing and a front bearing are respectively arranged at the connection between the rotating shaft and the casing and the top cover, an I-shaped sleeve wall is fixedly connected to the inner wall of the casing, a liquid storage space is formed at the gap between the side wall of the I-shaped sleeve wall and the inner wall of the casing, a wall solid block is fixedly connected to the side wall of the casing, a liquid inlet pipe and a liquid discharge pipe are arranged inside the wall solid block, the liquid inlet pipe and the liquid discharge pipe are used for filling and discharging the liquid storage space, and the liquid storage space is injected with coolant for heat dissipation inside the casing and improving the sound insulation performance of the casing; the side wall of the rotating shaft is fixedly connected to a top ring disk at the top of the I-shaped sleeve wall, the inner wall of the casing is fixedly connected to a bottom ring disk, the rotating shaft passes through the inner cavity of the bottom ring disk, and the top ring disk and the bottom ring disk are used for radial support of the rotating shaft to prevent radial shaking and reduce radial force on the bottom ring disk and the rear bearing.

[0006] Furthermore, a convex ring is fixedly connected to the inner wall of the casing, and an annular groove is provided on the inner wall of the convex ring. A U-shaped hose is arranged in the annular groove. One end of the U-shaped hose is connected to the liquid inlet pipe, and the other end passes through the liquid storage space. The liquid discharge pipe is connected to the liquid storage space. A plurality of wheel grooves are provided on the side wall of the top ring disk, and side wheels are installed in the wheel grooves. The side wheels are embedded in the annular groove of the convex ring to squeeze the side wall of the U-shaped hose. The side wheels cooperate with the U-shaped hose to realize liquid extraction and drainage from the liquid storage space.

[0007] Furthermore, a convex disc a is provided at the bottom of the top ring disc, and the convex disc a is embedded in the inner cavity along the inner wall of the I-shaped sleeve wall. A convex disc b is provided at the top of the bottom ring disc, and the convex disc is embedded in the inner cavity along the inner wall of the I-shaped sleeve wall.

[0008] Furthermore, an annular track groove is provided on the inner edge of the top of the I-shaped sleeve wall, and a plurality of balls 1 are slidably sleeved in the annular track groove, and the balls 1 are in contact with the bottom of the top ring disk and the side wall of the convex disk a.

[0009] Furthermore, the side wall of the bottom ring disk is provided with a plurality of hemispherical recesses, and the hemispherical recesses are movably sleeved with ball rollers 2. The inner wall of the bottom ring disk is provided with cavity wall rail grooves, and a plurality of ball rollers 2 are embedded in the cavity wall rail grooves. The top of the bottom ring disk is provided with a plurality of ball inlets connected with the cavity wall rail grooves.

[0010] Furthermore, an annular slide groove is provided on the top of the top ring disk, and a plurality of balancing block assemblies are arranged in the annular slide groove.

[0011] Furthermore, an annular groove c is provided on the inner wall of the annular slide, and the balancing block assembly includes a gravity block. A column groove is provided on the side wall of the gravity block, and a pressure column is slidably sleeved in the column groove. An operating chamber connected to the column groove is provided inside the gravity block, and a shift control mechanism is provided in the operating chamber, and the shift control mechanism is used to control the displacement of the pressure column.

[0012] Furthermore, the shifting control mechanism includes an inner rotating rod, the side wall of the inner rotating rod is fixedly connected to a worm wheel, the side wall of the worm wheel is meshed with a worm, the top of the worm extends to the top of the gravity block and is connected to a knob, the side wall of the inner rotating rod is provided with a thread, the pressure column is threadedly sleeved on the side wall of the inner rotating rod, the side wall of the pressure column is provided with a positioning groove, and the inner wall of the gravity block column groove is provided with a positioning strip embedded in the positioning groove.

[0013] Furthermore, the liquid inlet pipe is made of copper, and a heating wire is arranged on a side wall of the liquid inlet pipe.

[0014] Furthermore, a wave spring washer is provided at the connection between the bottom end of the rotating shaft and the casing, an O-ring is provided at the connection between the casing and the top cover, and the rear bearing and the front bearing are groove ball bearings.

[0015] Technical effects and advantages of the present invention: The present invention improves the casing structure, forms a liquid storage space in the casing by arranging an I-shaped sleeve wall, and inputs coolant into the liquid storage space for heat exchange, thereby ensuring that the motor can still maintain a good heat dissipation effect under long-term high-load operation, avoiding performance degradation or failure caused by overheating, and improving the stability of the motor in long-term operation; In addition, we specially set up the top ring plate and the bottom ring plate, which together provide solid radial support for the shaft, effectively avoiding the radial vibration of the shaft during rotation, and further enhancing the stability of the motor during operation. At the same time, these two parts of the structure also share the radial pressure generated by the shaft on the rear bearing and the front bearing, significantly extending the service life of these key parts; It is worth mentioning that the combined design of the top ring disc, bottom ring disc and I-shaped sleeve wall also provides two additional closed barriers for the stator and rotor inside the casing, significantly improving the sealing performance of the motor. On this basis, combined with the coolant in the liquid storage space, this design also helps to improve the sound insulation effect of the motor and effectively reduce noise pollution. In order to further optimize the structure, the design of the top ring disk was improved. Through the clever cooperation between the side wheel of the top ring disk and the U-shaped hose, the motor shaft rotation is used as the driving force to automatically pump out the coolant from the liquid storage space. This design reduces the reliance on additional power mechanisms and makes the overall structure more compact and efficient. Furthermore, the structure of the top ring disk has been further improved so that its weight can be adjusted in any eccentric direction. This feature allows the shaft to achieve dynamic balance during rotation by adjusting the eccentric weight of the top ring disk when the shaft vibrates due to the centrifugal force generated by the unbalanced mass, thereby effectively reducing vibration and further improving the stability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an exploded schematic diagram of the overall structure of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure of the casing; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure of the top ring disk; Figure 5 For the present invention Figure 3 A front view of the top ring disk, bottom ring disk, and I-shaped sleeve wall; Figure 6 For the present invention Figure 3 Schematic diagram of the I-shaped cylinder sleeve wall structure; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at A in the middle; Figure 8 For the present invention Figure 3 Schematic diagram of the cross-sectional structure of the bottom ring disk; Fig. 9 For the present invention Figure 3 Schematic diagram of the top structure of the top ring disk; Fig.10 For the present invention Fig. 9 Schematic diagram of the structure of the balancing block assembly.

[0017] The accompanying drawings are marked as follows: 1, casing; 2, top cover; 3, stator; 4, rotor; 5, shaft; 6, pulley; 7, top ring disk; 8, bottom ring disk; 9, rear bearing; 10, front bearing; 11, O-ring; 12, wave spring washer; 101, convex ring; 102, I-shaped sleeve wall; 103, U-shaped hose; 104, wall solid block; 105, liquid inlet pipe; 106, liquid discharge pipe; 107, ball one; 71, side wheel; 72, balance block assembly; 51, ball two; 81, cavity wall rail groove; 82, ball inlet; 721, gravity block; 722, pressure column; 723, inner rotating rod; 724, worm wheel; 725, worm; 726, knob. DETAILED DESCRIPTION

[0018] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Reference Figure 1 and Figure 2 The present invention provides a high-stability vehicle steering motor assembly, including a housing 1 and a top cover 2. A stator 3 and a rotor 4 are arranged inside the housing 1. A rotating shaft 5 is installed in the inner cavity of the rotor 4. A pulley 6 is connected to the top of the rotating shaft 5. A rear bearing 9 and a front bearing 10 are respectively arranged at the connection between the rotating shaft 5 and the housing 1 and the top cover 2. An I-shaped sleeve wall 102 is fixedly connected to the inner wall of the housing 1. A liquid storage space is formed at the gap between the side wall of the I-shaped sleeve wall 102 and the inner wall of the housing 1. A wall fixing block 104 is fixedly connected to the side wall of the housing 1. The wall fixing block 104 is fixedly connected to the side wall of the housing 1. 4 is provided with a liquid inlet pipe 105 and a liquid discharge pipe 106, the liquid inlet pipe 105 and the liquid discharge pipe 106 are used for filling and discharging the liquid storage space, and the cooling liquid is injected into the liquid storage space for heat dissipation inside the casing 1 and improving the sound insulation performance of the casing 1; the side wall of the rotating shaft 5 is located at the top of the I-shaped sleeve wall 102 and is fixedly connected with a top ring plate 7, the inner wall of the casing 1 is fixedly connected with a bottom ring plate 8, the rotating shaft 5 passes through the inner cavity of the bottom ring plate 8, the top ring plate 7 and the bottom ring plate 8 are used for radial support of the rotating shaft 5 to prevent radial shaking and reduce the radial force of the bottom ring plate 8 and the rear bearing 9.

[0020] When the motor runs for a long time, the temperature inside the motor will continue to rise due to the heat generated, which poses a potential impact on the components inside the motor. For this reason, by setting up a liquid storage space and injecting coolant into it, the inside of the casing 1 can be effectively heat exchanged, thereby significantly enhancing the heat dissipation effect of the motor and ensuring the stability of the motor during long-term operation. In addition, radial jitter often occurs during the rotation of the shaft 5. In order to solve this problem, a top ring disk 7 and a bottom ring disk 8 are specially provided, which can provide radial support for the shaft 5, effectively prevent the occurrence of radial jitter, and further improve the overall stability of the motor; in the transmission structure, the rear bearing 9 and the front bearing 10 play a key role in reducing the rotational friction of the shaft 5, and they also provide radial support for the shaft 5, and the setting of the top ring disk 7 and the bottom ring disk 8 can share the radial pressure borne by the rear bearing 9 and the front bearing 10, thereby extending the service life of these spare parts.

[0021] Reference Figure 2 A convex ring 101 is fixedly connected to the inner wall of the casing 1, and an annular groove is provided on the inner wall of the convex ring 101. A U-shaped hose 103 is arranged in the annular groove. One end of the U-shaped hose 103 is connected to the liquid inlet pipe 105, and the other end passes through the liquid storage space. The discharge pipe 106 is connected to the liquid storage space. A plurality of wheel grooves are provided on the side wall of the top ring plate 7, and a side wheel 71 is installed in the wheel groove. The side wheel 71 is embedded in the annular groove of the convex ring 101 to squeeze the side wall of the U-shaped hose 103. The side wheel 71 cooperates with the U-shaped hose 103 to realize the extraction and discharge of liquid from the liquid storage space.

[0022] Through this structural arrangement, when the rotating shaft 5 rotates and drives the top ring disk 7 to rotate together, the side wheel 71 will perform a peristaltic squeezing movement along the tube wall of the U-shaped hose 103. This action will generate suction inside the U-shaped hose 103, thereby driving the coolant in the liquid inlet pipe 105 to be sucked into the liquid storage space. Once the coolant in the liquid storage space reaches a full load state, it will be smoothly discharged through the drain pipe 106 under the action of internal pressure. This series of processes realizes the use of the motor's own power to complete the circulation of the coolant without the need for additional power mechanism, thereby making the overall structure more compact and efficient.

[0023] Reference Figure 2 A convex disc a is arranged at the bottom of the top ring disc 7, and the convex disc a is embedded in the inner cavity along the inner wall of the I-shaped sleeve wall 102; a convex disc b is arranged at the top of the bottom ring disc 8, and the convex disc is embedded in the inner cavity along the inner wall of the I-shaped sleeve wall 102.

[0024] This structure allows the top ring disk 7, the bottom ring disk 8 and the I-shaped sleeve wall 102 to work together to build two tight closed barriers for the stator 3 and the rotor 4 inside the casing 1. This design effectively prevents external impurities from penetrating into the casing 1, thereby avoiding any adverse effects that these impurities may have on the stator 3 and the rotor 4. This improvement not only enhances the sealing performance of the motor, but also further improves its overall stability and reliability.

[0025] Reference Figure 2 An annular track groove is provided at the inner edge of the top of the I-shaped sleeve wall 102, and a plurality of balls 107 are slidably sleeved in the annular track groove. The balls 107 are in contact with the bottom of the top ring plate 7 and the side wall of the convex plate a.

[0026] Since the top ring disk 7 will generate friction when in contact with the I-shaped sleeve wall 102 during rotation, this friction may have an adverse effect on the rotation of the rotating shaft 5. In order to reduce this friction, a ball 107 is specially provided. The presence of the ball 107 can significantly reduce the friction between the top ring disk 7 and the I-shaped sleeve wall 102 during rotation, thereby ensuring that the rotating shaft 5 can rotate more smoothly and efficiently.

[0027] Reference Figure 2 The side wall of the bottom ring disk 8 is provided with a plurality of hemispherical recesses, and the hemispherical recesses are movably sleeved with ball bearings 51. The inner wall of the bottom ring disk 8 is provided with a cavity wall track groove 81, and a plurality of ball bearings 51 are embedded in the cavity wall track groove 81. The top of the bottom ring disk 8 is provided with a plurality of ball inlets 82 connected with the cavity wall track groove 81.

[0028] Since the rotating shaft 5 passes through the inner cavity of the bottom ring disk 8, the bottom ring disk 8 forms radial support for the rotating shaft 5. Therefore, a large friction force will be generated between the bottom ring disk 8 and the rotating shaft 5 to affect the rotation of the rotating shaft 5. By setting the second ball 51, when the rotating shaft 5 rotates, the second ball 51 rolls in the cavity wall groove 81 to reduce the interference of the friction force on the rotation of the rotating shaft 5. During installation, the second ball 51 can enter the cavity wall groove 81 through the ball inlet 82.

[0029] Reference Figure 2 An annular slide groove is provided on the top of the top ring plate 7, and a plurality of balancing block assemblies 72 are arranged in the annular slide groove.

[0030] During the operation of the motor, the shaft 5 may cause vibration due to the centrifugal force generated by the unbalanced mass. This imbalance may be caused by various errors in the manufacturing and assembly process of the rotor 4 or the shaft 5, including but not limited to uneven material distribution, lack of processing accuracy or inadequate assembly. In order to effectively deal with this problem, the structure of the top ring disk 7 is specially designed; when the motor vibrates, by finding out the specific position and degree of imbalance, a balancing block assembly 72 is installed in the annular groove of the top ring disk 7, and the balancing block assembly 72 is fixed after sliding along the groove to the corresponding direction, and the eccentric position of the top ring disk 7 is targetedly weighted. In this way, when the shaft 5 rotates, the centrifugal force generated by the newly added weight will offset the original unbalanced centrifugal force, thereby achieving the purpose of reducing vibration and improving the running stability of the motor. Therefore, through this carefully designed top ring disk 7 structure, the running stability of the motor is further improved.

[0031] Reference Figure 3 An annular groove c is provided on the inner wall of the annular slide, and the balancing block assembly 72 includes a gravity block 721. A column groove is provided on the side wall of the gravity block 721, and a pressure column 722 is slidably sleeved in the column groove. An operating cavity connected to the column groove is provided inside the gravity block 721, and a shift control mechanism is provided in the operating cavity, and the shift control mechanism is used to control the displacement of the pressure column 722.

[0032] After the position of the balancing block assembly 72 in the annular groove is adjusted, the displacement of the pressure column 722 is controlled by the shift control mechanism so that one end of the pressure column 722 is embedded in the annular groove c and pressed against its inner wall, thereby achieving the effect of fixing the position of the balancing block assembly 72 and preventing it from falling off.

[0033] Reference Figure 3 The shifting control mechanism includes an inner rotating rod 723, a worm wheel 724 is fixedly connected to the side wall of the inner rotating rod 723, a worm 725 is meshed with the side wall of the worm wheel 724, the top of the worm 725 extends to the top of the gravity block 721 and is connected to a knob 726, the side wall of the inner rotating rod 723 is provided with a thread, the pressure column 722 is threadedly sleeved on the side wall of the inner rotating rod 723, a positioning groove is opened on the side wall of the pressure column 722, and a positioning strip embedded in the positioning groove is provided on the inner wall of the column groove of the gravity block 721.

[0034] The worm 725 is driven to rotate by rotating the knob 726, and the inner rotating rod 723 is rotated under the meshing effect of the worm 725 and the worm wheel 724. The displacement of the pressure column 722 is controlled by the threaded cooperation effect of the inner rotating rod 723 and the pressure column 722. The one-way locking characteristics of the worm wheel 724 and the worm 725 can lock the pressure column 722 after moving, so as to prevent the balance block assembly 72 from loosening in the annular groove and aggravating the power imbalance.

[0035] Reference Figure 3The liquid inlet pipe 105 is made of copper, and a heating wire is arranged on the side wall of the liquid inlet pipe 105 .

[0036] In extreme climates, such as low temperatures in winter, the steering motor performance may be reduced, and even the magnetic field strength inside the motor may be weakened, the resistivity may increase, and the output power and efficiency of the motor may decrease. By setting a heating wire, the coolant is heated while the motor is running to transfer heat to the inside of the motor, ensuring that the motor can operate normally under low temperature conditions.

[0037] Reference Figure 3 A wave spring washer 12 is provided at the connection between the bottom end of the rotating shaft 5 and the casing 1, an O-ring 11 is provided at the connection between the casing 1 and the top cover 2, and the rear bearing 9 and the front bearing 10 are groove ball bearings.

[0038] The wave spring washer 12 can provide an axial shock absorbing effect for the rotating shaft 5, and the O-ring 11 can ensure the sealing between the housing 1 and the top cover 2, thereby improving the dustproof and waterproof performance of the motor.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-stability vehicle steering motor assembly, comprising a housing (1) and a top cover (2), wherein a stator (3) and a rotor (4) are arranged inside the housing (1), a rotating shaft (5) is installed in the inner cavity of the rotor (4), a pulley (6) is connected to the top end of the rotating shaft (5), and a rear bearing (9) and a front bearing (10) are respectively arranged at the connection between the rotating shaft (5) and the housing (1) and the top cover (2), wherein: The inner wall of the casing (1) is fixedly connected to an I-shaped sleeve wall (102); a liquid storage space is formed at a gap between the side wall of the I-shaped sleeve wall (102) and the inner wall of the casing (1); a wall solid block (104) is fixedly connected to the side wall of the casing (1); a liquid inlet pipe (105) and a liquid discharge pipe (106) are arranged inside the wall solid block (104); the liquid inlet pipe (105) and the liquid discharge pipe (106) are used for filling and draining liquid from the liquid storage space; and cooling liquid is injected into the liquid storage space for heat dissipation inside the casing (1) and for improving the sound insulation performance of the casing (1); The side wall of the rotating shaft (5) is located at the top of the I-shaped sleeve wall (102) and is fixedly connected to a top ring disk (7); the inner wall of the housing (1) is fixedly connected to a bottom ring disk (8); the rotating shaft (5) passes through the inner cavity of the bottom ring disk (8); the top ring disk (7) and the bottom ring disk (8) are used to radially support the rotating shaft (5) to prevent radial shaking and reduce radial forces on the bottom ring disk (8) and the rear bearing (9).

2. A high-stability vehicle steering motor assembly according to claim 1, characterized in that: The inner wall of the housing (1) is fixedly connected to a convex ring (101), the inner wall of the convex ring (101) is provided with an annular groove, a U-shaped hose (103) is arranged in the annular groove, one end of the U-shaped hose (103) is butted against a liquid inlet pipe (105), and the other end thereof penetrates into the liquid storage space, the liquid discharge pipe (106) is communicated with the liquid storage space, a plurality of wheel grooves are provided on the side wall of the top ring plate (7), side wheels (71) are installed in the wheel grooves, the side wheels (71) are embedded in the annular groove of the convex ring (101) to squeeze the side wall of the U-shaped hose (103), and the side wheels (71) cooperate with the U-shaped hose (103) to realize the extraction and discharge of liquid from the liquid storage space.

3. The high-stability vehicle steering motor assembly according to claim 1, characterized in that: The top ring plate (7) is provided with a convex plate a at the bottom, and the convex plate a is embedded in the inner cavity along the inner wall of the I-shaped sleeve wall (102); the top of the bottom ring plate (8) is provided with a convex plate b, and the convex plate is embedded in the inner cavity along the inner wall of the I-shaped sleeve wall (102).

4. A high-stability vehicle steering motor assembly according to claim 3, characterized in that: An annular track groove is formed on the inner edge of the top of the I-shaped sleeve wall (102), and a plurality of balls (107) are slidably sleeved in the annular track groove. The balls (107) are in contact with the bottom of the top ring disk (7) and the side wall of the convex disk a.

5. The high-stability vehicle steering motor assembly according to claim 4, characterized in that: The side wall of the bottom ring plate (8) is provided with a plurality of hemispherical recesses, and the hemispherical recesses are movably sleeved with a second ball (51); the inner wall of the bottom ring plate (8) is provided with a cavity wall track groove (81), and a plurality of the second balls (51) are embedded in the cavity wall track groove (81); and the top of the bottom ring plate (8) is provided with a plurality of ball inlets (82) connected to the cavity wall track groove (81).

6. The high-stability vehicle steering motor assembly according to claim 1, characterized in that: An annular slide groove is provided on the top of the top ring disk (7), and a plurality of balancing block assemblies (72) are arranged in the annular slide groove.

7. A high-stability vehicle steering motor assembly according to claim 6, characterized in that: The inner wall of the annular slide groove is provided with an annular embedding groove c, the balancing block assembly (72) comprises a weight block (721), the side wall of the weight block (721) is provided with a column groove, a pressure column (722) is slidably sleeved in the column groove, an operating cavity connected to the column groove is provided inside the weight block (721), a shift control mechanism is provided in the operating cavity, and the shift control mechanism is used to control the displacement of the pressure column (722).

8. The high-stability vehicle steering motor assembly according to claim 7, characterized in that: The shift control mechanism comprises an inner rotating rod (723), a worm wheel (724) is fixedly connected to the side wall of the inner rotating rod (723), a worm (725) is meshed with the side wall of the worm wheel (724), the top end of the worm (725) extends to the top of the gravity block (721) and is connected to a knob (726), the side wall of the inner rotating rod (723) is provided with a thread, the pressure column (722) is threadedly sleeved on the side wall of the inner rotating rod (723), the side wall of the pressure column (722) is provided with a positioning groove, and the inner wall of the column groove of the gravity block (721) is provided with a positioning strip embedded in the positioning groove.

9. The high-stability vehicle steering motor assembly according to claim 2, characterized in that: The liquid inlet pipe (105) is made of copper, and a heating wire is arranged on the side wall of the liquid inlet pipe (105).

10. The high-stability vehicle steering motor assembly according to claim 1, characterized in that: A wave spring washer (12) is provided at the connection between the bottom end of the rotating shaft (5) and the casing (1), an O-ring (11) is provided at the connection between the casing (1) and the top cover (2), and the rear bearing (9) and the front bearing (10) are groove ball bearings.

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