A pure electric steering structure of an articulated engineering vehicle

Abstract

The present application relates to the technical field of articulated steering, and discloses a pure electric steering structure of an articulated engineering vehicle, which comprises a vehicle frame, a roller is rotationally arranged at the outer wall of the vehicle frame, a speed reducer is fixedly arranged at the inner wall of the vehicle frame, a steering shaft is fixedly arranged at the output end of the speed reducer, a steering motor is fixedly arranged at the input end of the speed reducer, when the limiting rod rotates by a certain angle, the limiting rod loses the limitation on the thrust plate, the thrust plate moves under the elastic force of the spring, a thrust force is generated on the moving frame, the moving frame is forced to move, the compression rod moves synchronously with the moving frame, when the compression rod moves, the compression rod is in contact with the inclined surface of the M-shaped fixed block, is gradually compressed, when the moving frame rotates under stress, a thrust force is generated on the compression rod, the compression rod is forced to generate a thrust force on the M-shaped fixed block, the limited power output by the motor is converted into force and stroke by using the force arm ratio of the lever, so that the risk of overloading and burning of the steering motor is reduced.

Description

Technical Field

[0001] This invention relates to the field of articulated steering technology, specifically to a pure electric steering structure for articulated engineering vehicles. Background Technology

[0002] This articulated engineering vehicle's pure electric steering structure eliminates all hydraulic components, consisting of an articulated assembly, a steering servo motor, an angle sensor, and a vehicle controller. The steering signal is processed by the controller in conjunction with the working conditions, and then the motor drives the vehicle frame to deflect around the articulation point. There is no risk of oil leakage, and the steering response is fast, the control precision is high, and the energy consumption is low. With closed-loop feedback protection, it is suitable for various heavy-duty articulated engineering vehicle operations. In roadbed filling operations in mountainous and hilly areas, a large amount of crushed stone and boulders are used to fill the roadbed. Road rollers need to directly compact these densely packed, unevenly leveled areas. If the road roller needs to turn, the front wheel edge may be directly blocked by large stones. When the road roller turns, the outer wheel travels a longer arc distance and has a stronger outward movement tendency, resulting in more thorough contact with the stones. This causes the pressure on the outer wheel to be much greater than that on the inner wheel, which in turn increases the steering resistance sharply, accelerates the wear of the steering parts, and ultimately reduces the service life of the road roller's steering mechanism. To address these issues, the following solutions are proposed. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a pure electric steering structure for an articulated engineering vehicle, including a frame, a roller rotatably disposed on the outer wall of the frame, a reducer fixedly disposed on the inner wall of the frame, a steering shaft fixedly disposed on the output end of the reducer, and a steering motor fixedly disposed on the input end of the reducer, and further comprising: The force-saving mechanism is fixedly installed on the side wall of the steering shaft; The force-saving mechanism includes a limiting rod fixedly connected to the side wall of the steering shaft, and a spring fixedly connected to the side wall of the frame. An auxiliary mechanism is slidably mounted on the side wall of the force-saving mechanism; The auxiliary mechanism includes a rotating block that is rotatably connected to the side wall of the limiting rod; The protection mechanism is slidably mounted on the top of the side wall of the steering shaft; The protection mechanism includes a fixed plate that is slidably connected to the top of the outer wall of the steering shaft, and an inclined block that is slidably connected to the inner wall of the fixed plate.

[0004] Preferred labor-saving mechanisms include: The triggering component is fixedly installed on the side wall of the steering shaft; A support component is fixedly installed on the side wall of the trigger component; When the trigger component moves, it loses its restriction on the supporting component.

[0005] Preferably, the auxiliary mechanism includes: The reset component is slidably disposed on the side wall of the trigger component; The unloading component is rotatably mounted on the side wall of the triggering component; When the reset component moves, the unloading component rotates accordingly.

[0006] Preferably, the protection mechanism includes: The stabilizing component is slidably mounted on the top of the outer wall of the steering shaft; The cleaning component is rotatably mounted on the outer wall of the frame. The stabilizing component exerts pressure on the cleaning component as it moves, causing the cleaning component to rotate.

[0007] Preferably, the triggering component includes a thrust plate fixedly connected to the outer wall of the spring, and a movable frame slidably connected to the top of the outer wall of the steering shaft; When the steering shaft starts to rotate, it drives the limiting rod to rotate synchronously. When the limiting rod rotates to a certain angle, it loses its restriction on the thrust plate, causing the thrust plate to move under the elastic force of the spring and generate a thrust on the moving frame, forcing the moving frame to move.

[0008] Preferably, the support assembly includes a spring fixedly connected to the inner wall of the movable frame, a compression rod fixedly connected to the side wall of the movable frame, and an M-shaped fixing block fixedly connected to the side wall of the frame. When the moving frame moves under force, it exerts pressure on the spring, and the compression rod moves synchronously with the moving frame. As the moving frame continues to move, the compression rod is gradually compressed under the action of the inclined surface of the M-shaped fixing block. When the moving frame turns to the left under force, it generates a thrust on the compression rod, forcing the compression rod to generate a thrust on the M-shaped fixing block on the right side.

[0009] Preferably, the reset assembly includes a sliding block slidably connected to the side wall of the thrust plate, and a bending rod is rotatably connected to the side wall of the sliding block; When the M-shaped fixed block rotates with the roller, it exerts a pulling force on the bending rod, forcing the sliding block to slide. When the sliding block slides a certain distance, the thrust plate moves under the elastic force of the spring and exerts a pushing force on the sliding block, causing the sliding block and the bending rod to move under force. When the thrust plate moves, the sliding block moves relative to the thrust plate.

[0010] Preferably, the force-relieving component includes a torsion spring sleeved on the inner wall of the rotating block; When the limiting rod exerts a thrust on the thrust plate, the rotating block comes into contact with the thrust plate. During the rotation of the limiting rod, the rotating block is subjected to the thrust of the thrust plate, causing the rotating block to rotate. When the rotating block rotates, it exerts pressure on the torsion spring. When the rotating block rotates to the limit state of the torsion spring, the rotating block exerts a thrust on the thrust plate, forcing the spring to be compressed again.

[0011] Preferably, the stabilizing component includes a spring sheet fixedly connected to the bottom of the outer wall of the inclined block; When the moving frame moves a certain distance, it comes into contact with the inclined surface of the inclined block and generates a pushing force on the inclined surface of the inclined block, forcing the inclined block to move down and generating pressure on the spring. The pressure on the spring acts on the top of the outer wall of the steering shaft, so that the connecting end of the steering shaft is subjected to a preload.

[0012] Preferably, the cleaning component includes a rotating shaft rotatably connected to the outer wall of the frame, a shaped scraper fixedly connected to the side wall of the rotating shaft, and a pressure bar fixedly connected to the bottom of the outer wall of the inclined block; When the inclined block moves down, it drives the pressure rod to move down synchronously. During the downward movement of the pressure rod, it comes into contact with the thread on the surface of the rotating shaft and exerts downward pressure on the rotating shaft, forcing the rotating shaft to rotate and driving the irregular scraper to rotate synchronously.

[0013] The present invention has the following beneficial effects: (1) If the limiting rod of the present invention rotates to the left, it loses its restriction on the thrust plate when it rotates to a certain angle, causing the thrust plate to move under the elastic force of the spring and generate a thrust on the moving frame, forcing the moving frame to move. When the moving frame moves, it generates pressure on the spring, and the compression rod moves synchronously with the moving frame. When the compression rod moves, it continuously contacts the inclined surface of the M-shaped fixing block and is gradually compressed. When the moving frame is rotated under force, it generates a thrust on the compression rod, forcing the compression rod to generate a thrust on the M-shaped fixing block. Through the above components, the lever arm ratio is used to convert the limited power output by the motor into a stroke, thereby reducing the risk of overload burnout of the steering motor.

[0014] (2) When the limiting rod of the present invention generates a thrust on the thrust plate, the rotating block comes into contact with the thrust plate. During the rotation of the limiting rod, the rotating block is subjected to the thrust of the thrust plate, causing the rotating block to rotate under force. When the rotating block rotates, it exerts pressure on the torsion spring. As the thrust plate generates a thrust on the rotating block, the elastic potential energy of the spring is gradually released. When the rotating block rotates to the limit state of the torsion spring, the thrust plate can no longer generate a thrust on the rotating block. However, as the limiting rod continues to rotate, the rotating block generates a thrust on the thrust plate, forcing the spring to be compressed again. Through the above components, when the limiting rod rotates, the inner side of the limiting rod will not apply an additional thrust to the spring, and the spring can also be limited.

[0015] (3) When the moving frame of the present invention moves a certain distance, it comes into contact with the inclined surface of the inclined block. As the moving frame continues to move, it generates a pushing force on the inclined surface of the inclined block, forcing the inclined block to move down. When the inclined block moves down, it generates pressure on the spring sheet. The pressure on the spring sheet acts on the top of the outer wall of the steering shaft, so that the connecting end of the steering shaft is subjected to a preload. Through the above components, a preload is applied to the steering shaft during steering, which can suppress abnormal movement of the steering shaft connection part, greatly improve the structural stability of the steering process, prevent loose wear at the connection after long-term use, and ensure steering accuracy.

[0016] (4) When the inclined block of the present invention is subjected to force and moves downward, it drives the lower pressure rod to move downward synchronously. During the downward movement of the lower pressure rod, the bottom protrusion of the lower pressure rod just contacts the thread on the surface of the rotating shaft. As the lower pressure rod continues to move downward, the lower pressure rod generates downward pressure on the rotating shaft, forcing the rotating shaft to rotate under force, which drives the irregular scraper to rotate synchronously. When the rotating shaft rotates, it generates pressure on the torsion spring inside, causing the torsion spring to be compressed. During the rotation of the irregular scraper, it generates thrust on the dust particles on the surface of the frame and near the steering shaft. Through the above components, the accumulated particles can be cleaned in real time, preventing particles from invading the wear parts of the steering joint, greatly extending the service life of the steering gear, and ensuring the accuracy of driving control. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic cross-sectional view of the force-saving mechanism of the present invention; Figure 4 This is a cross-sectional schematic diagram of the reset component of the present invention; Figure 5 This is a cross-sectional schematic diagram of the force-saving mechanism and reset assembly of the present invention; Figure 6 This is a schematic cross-sectional view of the force-relieving component of the present invention; Figure 7 This is a schematic cross-sectional view of the stabilizing component of the present invention; Figure 8 This is a schematic cross-sectional view of the cleaning component of the present invention; Figure 9 For the present invention Figure 8 Enlarged diagram of point A in the middle.

[0019] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Labor-saving mechanism; 11. Triggering assembly; 12. Support assembly; 13. Frame; 14. Roller; 15. Reducer; 16. Steering shaft; 17. Steering motor; 111. Limiting rod; 112. Spring; 113. Thrust plate; 114. Moving frame; 121. Spring 1; 122. Compression rod; 123. M-shaped fixing block; 2. Auxiliary mechanism; 21. Reset assembly; 22. Force-relieving assembly; 211. Sliding block; 212. Bending rod; 221. Rotating block; 222. Torsion spring; 3. Protection mechanism; 31. Stabilizing assembly; 32. Cleaning assembly; 311. Fixing plate; 312. Inclining block; 313. Spring; 321. Rotating shaft; 322. Irregular scraper; 323. Downward pressure rod. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, please refer to Figures 1-7 This invention relates to a pure electric steering structure for an articulated engineering vehicle, comprising a frame 13, a roller 14 rotatably mounted on the outer wall of the frame 13, a reducer 15 fixedly mounted on the inner wall of the frame 13, a steering shaft 16 fixedly mounted on the output end of the reducer 15, and a steering motor 17 fixedly mounted on the input end of the reducer 15, and further comprising: The force-saving mechanism 1 is fixedly installed on the side wall of the steering shaft 16; Among them, the force-saving mechanism 1 includes a limiting rod 111 fixedly connected to the side wall of the steering shaft 16, and a spring 112 fixedly connected to the side wall of the frame 13; Auxiliary mechanism 2 is slidably disposed on the side wall of force-saving mechanism 1; The auxiliary mechanism 2 includes a rotating block 221 that is rotatably connected to the side wall of the limiting rod 111; The protection mechanism 3 is slidably mounted on the top of the side wall of the steering shaft 16; The protection mechanism 3 includes a fixed plate 311 that is slidably connected to the top of the outer wall of the steering shaft 16, and an inclined block 312 that is slidably connected to the inner wall of the fixed plate 311.

[0022] Labor-saving mechanism 1 includes: Trigger component 11 is fixedly installed on the side wall of steering shaft 16; Support component 12 is fixedly disposed on the side wall of trigger component 11; When the worker starts the engine, the frame 13 moves, and the frame 13 pushes the roller 14 to rotate. When the worker needs to turn, the steering motor 17 is triggered, which in turn triggers the reducer 15 to start working. Finally, the reducer 15 drives the steering shaft 16 to rotate, thereby enabling the frame 13 to drive the roller 14 to turn. When the steering shaft 16 starts to rotate, it drives the trigger component 11 to move synchronously. When the trigger component 11 moves, it loses its restraint on the support component 12, causing the support component 12 to move.

[0023] Auxiliary mechanism 2 includes: Reset component 21 is slidably disposed on the side wall of trigger component 11; The unloading component 22 is rotatably mounted on the side wall of the triggering component 11; When the trigger component 11 moves, it generates a thrust on the reset component 21, forcing the reset component 21 to move under the force, and the unloading component 22 rotates accordingly.

[0024] Protection agency 3 includes: Stabilizing component 31 is slidably disposed on the top of the outer wall of steering shaft 16; Cleaning component 32 is rotatably mounted on the outer wall of the frame 13; When the trigger component 11 moves, it generates a thrust on the stabilizing component 31, forcing the stabilizing component 31 to move under force. When the stabilizing component 31 moves, it generates pressure on the cleaning component 32, causing the cleaning component 32 to rotate under force.

[0025] Example 2, please refer to Figures 3-9 The present invention is a pure electric steering structure for an articulated engineering vehicle. Based on the first embodiment, the trigger component 11 includes a thrust plate 113 fixedly connected to the outer wall of the spring 112, and a movable frame 114 slidably connected to the top of the outer wall of the steering shaft 16. When the steering shaft 16 starts to rotate, it drives the limiting rod 111 to rotate synchronously, such as... Figure 3 As shown, if the limiting rod 111 rotates to the left at this time, when the limiting rod 111 rotates to a certain angle, it loses its restriction on the push plate 113, causing the push plate 113 to move under the elastic force of the spring 112 and come into contact with the moving frame 114. With the continuous output of the elastic force of the spring 112, the push plate 113 generates a pushing force on the moving frame 114, forcing the moving frame 114 to move under the force. With point E as the center, the length of the moving frame 114 on the left side of point E is much longer than that of the moving frame 114 on the right side.

[0026] The support assembly 12 includes a spring 121 fixedly connected to the inner wall of the movable frame 114, a compression rod 122 fixedly connected to the side wall of the movable frame 114, and an M-shaped fixing block 123 fixedly connected to the side wall of the frame 13. When the movable frame 114 moves under force, it exerts pressure on the spring 121, causing the spring 121 to compress and accumulate potential energy. The compression rod 122 moves synchronously with the movable frame 114, and during its movement, it continuously contacts the inclined surface of the M-shaped fixing block 123. As the movable frame 114 continues to move, the compression rod 122 is gradually compressed under the action of the inclined surface of the M-shaped fixing block 123. Figure 5 As shown, during the movement of the moving frame 114 to the left of the protrusion at point E, the compression rod 122 on the left side of point E moves synchronously with the movement of the moving frame 114 and comes into contact with the M-shaped fixing block 123, gradually being compressed. At this time, as the roller 14 moves to the left, it drives the M-shaped fixing block 123 to rotate synchronously, and the M-shaped fixing block 123 continuously exerts pressure on the compression rod 122 on the left side of point E, causing the compression rod 122 to exert a pushing force on the moving frame 114. Since the moving frame 114 on the left side of point E is longer than the moving frame 114 on the right side of point E, when the moving frame 114 is rotated under force, it exerts a pushing force on the compression rod 122 on the right side of point E, forcing the compression rod 122 to exert a pushing force on the M-shaped fixing block 123 on the right side of point E.

[0027] The reset assembly 21 includes a sliding block 211 that is slidably connected to the side wall of the thrust plate 113, and a bending rod 212 is rotatably connected to the side wall of the sliding block 211. When the M-shaped fixing block 123 rotates with the roller 14, it exerts a pulling force on the bending rod 212, which in turn exerts a pulling force on the sliding block 211, forcing the sliding block 211 to slide. When the sliding block 211 slides a certain distance, the push plate 113 moves under the elastic force of the spring 112. When the push plate 113 moves, it exerts a pushing force on the sliding block 211, causing the sliding block 211 and the bending rod 212 to move under force. When the push plate 113 moves, the sliding block 211 moves relative to the pushing force. When plate 113 moves, during the resetting process of M-shaped fixing block 123, M-shaped fixing block 123 exerts a pushing force on bending rod 212 again, forcing bending rod 212 to continuously exert a pushing force on push plate 113, so that push plate 113 gradually achieves resetting under the pushing force of bending rod 212, and compresses spring 112 again. When M-shaped fixing block 123 on the left side of E rotates, it exerts a pushing force on bending rod 212. Since bending rod 212 cannot exert a pushing force on push plate 113 at this time, bending rod 212 is bent by force.

[0028] The unloading assembly 22 includes a torsion spring 222 sleeved on the inner wall of the rotating block 221; When the limiting rod 111 exerts a pushing force on the push plate 113, the rotating block 221 comes into contact with the push plate 113. During the rotation of the limiting rod 111, the rotating block 221 is subjected to the pushing force of the push plate 113, causing the rotating block 221 to rotate under force. When the rotating block 221 rotates, it exerts pressure on the torsion spring 222, causing the torsion spring 222 to be compressed and accumulate potential energy. As the push plate 113 exerts a pushing force on the rotating block 221, the elastic potential energy of the spring 112 is gradually released. When the rotating block 221 rotates to the limit state of the torsion spring 222, the push plate 113 can no longer exert a pushing force on the rotating block 221. However, as the limiting rod 111 continues to rotate, the rotating block 221 exerts a pushing force on the push plate 113, forcing the spring 112 to be compressed again.

[0029] The stabilizing component 31 includes a spring piece 313 fixedly connected to the bottom of the outer wall of the inclined block 312; When the moving box 114 moves a certain distance, such as Figure 7 As shown, the protrusion at point F of the moving frame 114 comes into contact with the inclined surface of the tilting block 312. As the moving frame 114 continues to move, the protrusion at point F of the moving frame 114 exerts a pushing force on the inclined surface of the tilting block 312, forcing the tilting block 312 to move downward under force. When the tilting block 312 moves downward, it exerts pressure on the spring piece 313, causing the spring piece 313 to be compressed and accumulate potential energy. The pressure on the spring piece 313 acts on the top of the outer wall of the steering shaft 16, so that the connecting end of the steering shaft 16 is subjected to a preload.

[0030] The cleaning component 32 includes a rotating shaft 321 rotatably connected to the outer wall of the frame 13, a shaped scraper 322 fixedly connected to the side wall of the rotating shaft 321, and a pressing rod 323 fixedly connected to the bottom of the outer wall of the inclined block 312. When the steering shaft 16 rotates under force, it generates a thrust on the irregular scraper 322, causing the irregular scraper 322 to rotate preferentially. When the tilting block 312 moves downward under force, it drives the lowering rod 323 to move downward synchronously. During the downward movement of the lowering rod 323, the bottom protrusion of the lowering rod 323 just makes threaded contact with the surface of the rotating shaft 321. As the lowering rod 323 continues to move downward, it generates downward pressure on the rotating shaft 321, forcing the rotating shaft 321 to rotate under force, which drives the irregular scraper 322 to rotate synchronously. When the rotating shaft 321 rotates, it generates pressure on the torsion spring inside, causing the torsion spring to be compressed. During the rotation, the irregular scraper 322 generates a thrust on the surface of the frame 13 and the dust particles near the steering shaft 16.

[0031] A specific application of this embodiment is as follows: When the worker starts the engine, the frame 13 moves and the frame 13 pushes the roller 14 to rotate. When the worker needs to turn, the steering motor 17 is triggered, which in turn triggers the reducer 15 to start working. Finally, the reducer 15 drives the steering shaft 16 to rotate, thereby realizing the steering of the frame 13 and the roller 14.

[0032] In roadbed filling operations in mountainous and hilly areas, a large amount of crushed stone and boulders are used to fill the roadbed. Road rollers need to directly compact these densely packed, unevenly leveled areas. If the road roller needs to turn, the wheel edge of roller 14 may be directly pressed against by large stones. When the road roller turns, the outer roller 14 travels a longer arc, exhibiting a stronger outward movement and more thorough contact with the stones. This results in the outer roller 14 experiencing significantly greater pressure than the inner roller 14, causing a sharp increase in steering resistance, accelerating wear on the steering components, and ultimately reducing the service life of the road roller's steering mechanism. When the steering shaft 16 begins to rotate, it drives the limiting rod 111 to rotate synchronously. Figure 3 As shown, if the limiting rod 111 rotates to the left, it loses its restriction on the push plate 113 when it rotates a certain angle. This causes the push plate 113 to move under the force of the spring 112 and come into contact with the moving frame 114. With the continuous output of the spring force of the spring 112, the push plate 113 generates a pushing force on the moving frame 114, forcing the moving frame 114 to move under force. Centered on point E, the length of the moving frame 114 on the left side of point E is much longer than that on the right side. When the moving frame 114 moves, it exerts pressure on the spring 121, causing the spring 121 to be compressed and accumulate potential energy. The compression rod 122 moves synchronously with the moving frame 114. During the movement of the compression rod 122, it continuously comes into contact with the inclined surface of the M-shaped fixing block 123. As the moving frame 114 continues to move, the compression rod 122 is gradually compressed under the action of the inclined surface of the M-shaped fixing block 123. Figure 5As shown, during the movement of the moving frame 114 to the left of the protrusion at point E, the compression rod 122 on the left side of point E moves synchronously with the movement of the moving frame 114 and comes into contact with the M-shaped fixing block 123, gradually being compressed. At this time, as the roller 14 moves to the left, it drives the M-shaped fixing block 123 to rotate synchronously, and the M-shaped fixing block 123 continuously exerts pressure on the compression rod 122 on the left side of point E, causing the compression rod 122 to exert a pushing force on the moving frame 114. Since the moving frame 114 on the left side of point E is longer than the one on the right side of point E... When the movable frame 114 on the side rotates under force, it generates a thrust on the compression rod 122 on the right side of point E, forcing the compression rod 122 to generate a thrust on the M-shaped fixed block 123 on the right side of point E. Through the above components, by utilizing the lever arm ratio, the limited power output of the motor is converted from force to stroke. The small stroke and small resistance input of the inner roller 14 is amplified to obtain the large thrust output of the outer roller 14, thereby reducing the risk of overload and burnout of the steering motor 17. The M-shaped fixed block 123 follows the roller 14. When the rod rotates, the M-shaped fixed block 123 exerts a pulling force on the bent rod 212, which in turn exerts a pulling force on the sliding block 211, forcing the sliding block 211 to slide. When the sliding block 211 slides a certain distance, the push plate 113 moves under the elastic force of the spring 112. When the push plate 113 moves, it exerts a pushing force on the sliding block 211, causing the sliding block 211 and the bent rod 212 to move under the force. Furthermore, when the push plate 113 moves, the sliding block 211 moves relative to the push plate 113. During the resetting process of the M-shaped fixing block 123, the M-shaped fixing block 123 exerts a pushing force on the bending rod 212 again, forcing the bending rod 212 to continuously exert a pushing force on the push plate 113, so that the push plate 113 gradually achieves resetting under the pushing force of the bending rod 212, and compresses the spring 112 again. When the M-shaped fixing block 123 on the left side of point E rotates, it exerts a pushing force on the bending rod 212. Since the bending rod 212 cannot exert a pushing force on the push plate 113 at this time, the bending rod 212 is bent by force.

[0033] Utilizing the rotational characteristics of the aforementioned limiting rod 111, when the limiting rod 111 exerts a pushing force on the thrust plate 113, the rotating block 221 comes into contact with the thrust plate 113. During the rotation of the limiting rod 111, the rotating block 221 is subjected to the pushing force of the thrust plate 113, causing the rotating block 221 to rotate under force. Furthermore, the rotation of the rotating block 221 exerts pressure on the torsion spring 222, causing the torsion spring 222 to compress and accumulate potential energy. As the thrust plate 113 exerts a pushing force on the rotating block 221, the elastic potential energy of the spring 112 is gradually released. When the rotating block 221 rotates to the limit state of the torsion spring 222, the thrust plate 113 can no longer exert a pushing force on the rotating block 221. As the limiting rod 111 continues to rotate, the rotating block 221 exerts a thrust on the push plate 113, forcing the spring 112 to be compressed again. When the limiting rod 111 rotates, the outer side of the limiting rod 111 loses its resistance to the spring, allowing the spring to release. However, the inner side of the limiting rod 111 continues to exert pressure on the spring 112, which is in a state of almost being tightened. This increases the resistance encountered when the limiting rod 111 rotates, causing the steering resistance to gradually increase. Through the above components, when the limiting rod 111 rotates, the inner side of the limiting rod 111 does not exert additional thrust on the spring 112, and at the same time, it can limit the spring 112.

[0034] Utilizing the aforementioned characteristics of the moving frame 114, when the moving frame 114 moves a certain distance, such as Figure 7 As shown, the protrusion at point F of the moving frame 114 contacts the inclined surface of the tilting block 312. As the moving frame 114 continues to move, the protrusion at point F of the moving frame 114 exerts a pushing force on the inclined surface of the tilting block 312, forcing the tilting block 312 to move downwards. When the tilting block 312 moves downwards, it exerts pressure on the spring piece 313, causing the spring piece 313 to be compressed and accumulate potential energy. The pressure on the spring piece 313 acts on the top of the outer wall of the steering shaft 16, causing the connecting end of the steering shaft 16 to be subjected to a preload. Under dusty conditions... Fine dust can easily penetrate the sealing structure and enter the connection position of the steering shaft 16, accelerating component wear, causing abnormally large fitting clearances, and ultimately leading to loosening of the connection. This results in poor directional stability during driving, and even unexplained deviation, significantly increasing the risk of loss of control. By using the aforementioned components, a preload is applied to the steering shaft 16 during steering, which can suppress abnormal movement at the connection position of the steering shaft 16, greatly improving the structural stability of the steering process, preventing loosening and wear at the connection after long-term use, and ensuring steering accuracy.

[0035] Utilizing the rotational characteristics of the steering shaft 16, when the steering shaft 16 is subjected to force and rotates, it generates a thrust on the irregular scraper 322, causing the irregular scraper 322 to rotate preferentially. Meanwhile, when the tilting block 312 is subjected to force and moves downward, it drives the lower pressure rod 323 to move downward synchronously. During the downward movement of the lower pressure rod 323, the bottom protrusion of the lower pressure rod 323 just makes threaded contact with the surface of the rotating shaft 321. As the lower pressure rod 323 continues to move downward, it generates downward pressure on the rotating shaft 321, forcing the rotating shaft 321 to rotate and causing the irregular scraper 322 to rotate synchronously. Furthermore, when the rotating shaft 321 rotates, it exerts pressure on the internal torsion spring, causing the torsion spring... Under compression, the irregular scraper 322 generates thrust on the dust particles on the surface of the frame 13 and near the steering shaft 16 during rotation. Since the steering connection position is mostly a movable structure with inherent fitting clearance, and the vehicle often travels on dusty and muddy roads, dust and mud kicked up from the road can easily enter and remain through the gaps. Dust particles will accelerate the wear inside the steering shaft 16 like abrasives, destroy the original fitting precision, increase the gap between components, and significantly shorten the service life of the steering mechanism. Through the above-mentioned components, the accumulated particles can be cleaned in real time, preventing particles from entering the steering joint wear parts, greatly extending the service life of the steering gear, and ensuring the accuracy of driving control.

[0036] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pure electric steering structure for an articulated engineering vehicle, comprising a frame (13), wherein a roller (14) is rotatably disposed on the outer wall of the frame (13), a reducer (15) is fixedly disposed on the inner wall of the frame (13), a steering shaft (16) is fixedly disposed at the output end of the reducer (15), and a steering motor (17) is fixedly disposed at the input end of the reducer (15), characterized in that, Also includes: The force-saving mechanism (1) is fixedly installed on the side wall of the steering shaft (16); The force-saving mechanism (1) includes a limiting rod (111) fixedly connected to the side wall of the steering shaft (16), and a spring (112) fixedly connected to the side wall of the frame (13). Auxiliary mechanism (2), which is slidably disposed on the side wall of the force-saving mechanism (1); The auxiliary mechanism (2) includes a rotating block (221) that is rotatably connected to the side wall of the limiting rod (111). The protection mechanism (3) is slidably disposed on the top of the side wall of the steering shaft (16); The protection mechanism (3) includes a fixed plate (311) that is slidably connected to the top of the outer wall of the steering shaft (16), and an inclined block (312) is slidably connected to the inner wall of the fixed plate (311).

2. The pure electric steering structure for an articulated engineering vehicle according to claim 1, characterized in that: The labor-saving mechanism (1) includes: Trigger assembly (11), which is fixedly disposed on the side wall of steering shaft (16); A support component (12) is fixedly disposed on the side wall of the trigger component (11); When the steering shaft (16) starts to rotate, it drives the trigger component (11) to move synchronously.

3. The pure electric steering structure for an articulated engineering vehicle according to claim 2, characterized in that: The auxiliary mechanism (2) includes: A reset component (21) is slidably disposed on the side wall of the trigger component (11); The unloading assembly (22) is rotatably disposed on the side wall of the trigger assembly (11); When the trigger component (11) moves, it generates a thrust on the reset component (21).

4. The pure electric steering structure for an articulated engineering vehicle according to claim 3, characterized in that: The protection mechanism (3) includes: A stabilizing component (31) is slidably disposed on the top of the outer wall of the steering shaft (16); A cleaning component (32) is rotatably mounted on the outer wall of the frame (13); When the trigger component (11) moves, it generates a thrust on the stabilizing component (31).

5. The pure electric steering structure for an articulated engineering vehicle according to claim 4, characterized in that: The trigger assembly (11) includes a thrust plate (113) fixedly connected to the outer wall of the spring (112), and a movable frame (114) is slidably connected to the top of the outer wall of the steering shaft (16). The spring (112) is initially in a compressed state, and the thrust plate (113) is slidably connected to the outer wall of the frame (13).

6. The pure electric steering structure for an articulated engineering vehicle according to claim 5, characterized in that: The support assembly (12) includes a spring (121) fixedly connected to the inner wall of the movable frame (114), a compression rod (122) fixedly connected to the side wall of the movable frame (114), and an M-shaped fixing block (123) fixedly connected to the side wall of the frame (13). The compression rod (122) contacts the side wall of the M-shaped fixing block (123), and the contact surface between the compression rod (122) and the M-shaped fixing block (123) is provided with a wear-resistant pad.

7. The pure electric steering structure for an articulated engineering vehicle according to claim 6, characterized in that: The reset assembly (21) includes a sliding block (211) slidably connected to the side wall of the thrust plate (113), and a bending rod (212) is rotatably connected to the side wall of the sliding block (211). The end of the bending rod (212) away from the thrust plate (113) is rotatably connected to the bottom of the outer wall of the M-shaped fixing block (123), and the bending force required for the bending rod (212) is greater than the elastic force of the spring (112).

8. The pure electric steering structure for an articulated engineering vehicle according to claim 6, characterized in that: The unloading assembly (22) includes a torsion spring (222) sleeved on the inner wall of the rotating block (221). The outer ends of the torsion spring (222) are fixedly connected to the side walls of the limiting rod (111).

9. The pure electric steering structure for an articulated engineering vehicle according to claim 6, characterized in that: The stabilizing component (31) includes a spring piece (313) fixedly connected to the bottom of the outer wall of the inclined block (312). The bottom of the outer wall of the spring piece (313) contacts the top of the outer wall of the steering shaft (16), and the moving frame (114) still exerts a thrust on the tilting block (312) when it stops moving.

10. The pure electric steering structure for an articulated engineering vehicle according to claim 9, characterized in that: The cleaning component (32) includes a rotating shaft (321) rotatably connected to the outer wall of the frame (13), a shaped scraper (322) fixedly connected to the side wall of the rotating shaft (321), and a pressing rod (323) fixedly connected to the bottom of the outer wall of the inclined block (312). The irregular scraper (322) is slidably connected to the outer wall of the frame (13) and the steering shaft (16).

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