A semi-closed leaf spring slide plate seat for axle

Abstract

The application discloses a semi-closed leaf spring sliding plate seat for an axle, which comprises sliding plate bases arranged on the upper end faces of left and right axles, protruding parts arranged on the upper sides of each group of sliding plate bases, leaf spring accommodating grooves formed in the inner sides of each group of protruding parts along the left-right direction, guide structures arranged in the inner cavities of the leaf spring accommodating grooves, and damping structures connected to the outer ends of the guide structures, wherein the guide structures are arranged to slide leftward and rightward relative to the protruding parts through the inner cavities of the leaf spring accommodating grooves, and the damping structures are used to control the sliding speed of the guide structures leftward and rightward. The damping structures can convert part of mechanical energy between the leaf spring and the leaf spring sliding plate seat into internal energy, thereby reducing the motion impact between the leaf spring and the leaf spring sliding plate seat, and improving the service life of the leaf spring sliding plate seat.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, and in particular to a semi-enclosed leaf spring sliding plate seat for vehicle axles. Background Technology

[0002] Automotive balance suspensions effectively distribute force evenly between the front and rear wheels, hence their widespread use. Leaf spring slide seats are used to secure the two ends of the balance suspension. However, existing balance suspensions for engineering vehicles often employ a single-piece structure for the leaf spring slide seats. During actual use, due to the deformation of the leaf spring, the two ends frequently move towards or away from each other, causing the leaf spring slide seats to be impacted by the leaf spring ends, resulting in severe wear. Generally, heat treatment of the inner surface of the leaf spring slide seat is used during manufacturing to extend its service life. Semi-enclosed leaf spring slide seats utilize a C-shaped structure with notches on the sidewalls, allowing for more efficient heat exchange with air during impacts between the slide seat and the leaf spring ends. However, these methods still cannot mitigate the impact between the leaf spring ends and the corresponding slide seats. When the leaf spring slide seats are severely worn, all connected components need to be removed and the entire slide seat replaced, which is not only difficult to perform but also expensive to replace.

[0003] An inventor has disclosed a leaf spring skateboard seat (CN215705935U) comprising a main body, a base plate, and two side plates arranged parallel to each other and perpendicular to the base plate. A bottom liner plate is fixedly mounted on the side of the base plate, parallel to the base plate and positioned between the two side plates. Side liners are also fixedly mounted on the side plates, parallel to each other. Both the bottom liner plate and the side liner plates are made of wear-resistant material. Using this leaf spring skateboard seat ensures overall strength and rigidity while improving wear resistance, significantly extending the service life of the seat.

[0004] However, the above application has the following problems: the bottom plate and side plate of the leaf spring skateboard seat are made of wear-resistant materials, which increases the manufacturing process of the leaf spring skateboard seat and the assembly difficulty of the leaf spring skateboard seat with the bottom plate and side plate. The production difficulty is high and the cost is high. Moreover, it cannot effectively reduce the relative movement between the leaf spring and the leaf spring skateboard seat. The movement impact between the two ends of the leaf spring and the leaf spring skateboard seat still exists. Summary of the Invention

[0005] The purpose of this invention is to provide a semi-enclosed leaf spring slide seat for vehicle axles, which can convert part of the mechanical energy between the leaf spring and the leaf spring slide seat into internal energy through a damping structure, thereby reducing the motion impact between the leaf spring and the leaf spring slide seat and improving the service life of the leaf spring slide seat.

[0006] The present invention adopts the following technical solution: A semi-enclosed leaf spring sliding plate seat for vehicle axles includes sliding plate bases disposed on the upper surfaces of the left and right axles. Each set of sliding plate bases has a protrusion on its upper side, and a leaf spring receiving groove is formed on the inner side of each set of protrusions along the left and right direction. A guide structure is disposed in the inner cavity of the leaf spring receiving groove, and the guide structure is slidably disposed with the protrusion through the inner cavity of the leaf spring receiving groove. A damping structure is connected to the outer end of the guide structure, and the damping structure is used to control the left and right sliding speed of the guide structure.

[0007] Furthermore, the guide structure includes an upper sliding groove and a lower sliding groove horizontally arranged on the top and bottom walls of the inner cavity of the leaf spring receiving groove. A vertical support rod is also slidably arranged between the upper sliding groove and the lower sliding groove, and the two ends of the connecting rod are fixedly connected to the end of the support rod away from the leaf spring and the corresponding end of the vertically arranged support plate, respectively. The other end of the support plate is fixedly connected to the damping structure.

[0008] Furthermore, the support plate is fixedly connected with a guide rod parallel to the connecting rod. The guide rod is inserted into the inner wall of the protrusion and is slidably connected to the protrusion from left to right. Each set of support slide rods passes through one end of the corresponding leaf spring and is slidably connected to the leaf spring.

[0009] Furthermore, the outer wall of the protrusion is provided with horizontal accommodating through holes, and a damping structure is coaxially arranged inside the accommodating through holes.

[0010] Furthermore, the damping structure includes a drive rod fixedly connected to the right end face of the support plate. A damping disk is coaxially fixed in the middle of the drive rod. The damping disk is adapted to the inner diameter of the accommodating through hole and is slidably disposed in the middle of the accommodating through hole. The left and right parts of the drive rod are respectively slidably and sealingly disposed with the support disk and the sealing disk. The support disk and the sealing disk are fixedly disposed at the left and right ends of the accommodating through hole. A floating disk adapted to the inner diameter of the accommodating through hole and slidably disposed in the accommodating through hole is coaxially disposed between the support disk and the damping disk. The left part of the drive rod is sealed through the floating disk and slidably connected to the floating disk. The variable sealing space formed between the sealing disk and the floating disk is filled with oil, and a variable compensation space is formed between the support disk and the floating disk. Damping through holes are uniformly disposed around the circumference of the damping disk.

[0011] Furthermore, a compensating spring that is always in a compressed state is coaxially arranged between the floating disk and the support disk, with the left and right ends of the compensating spring fixedly connected to the support disk and the floating disk, respectively.

[0012] Furthermore, a set of damping valves with identical structures are coaxially and symmetrically arranged on both the left and right sides of the damping disc, and the damping valves on both sides are used to control the flow rate of the damping through hole.

[0013] Furthermore, the damping valve includes a guide plate coaxially fixedly mounted on the left side of the damping disc. A guide hole, communicating with the damping through hole, is provided circumferentially on the guide plate at a position corresponding to the damping through hole. A circular throttling disc is coaxially mounted on the left side of the guide plate, slidingly connected to the drive rod. The right end face of the throttling disc circumferentially covers the left end opening of the guide hole. A positioning disc is coaxially fixedly mounted on the drive rod to the left of the throttling disc. A compression spring, always in a compressed state, is provided between the throttling disc and the positioning disc. A one-way valve is radially mounted on each set of guide holes inside the guide plate. The inner end of the one-way valve communicates with the guide hole, and the outer end communicates with the external sealing space of the throttling disc, meaning the one-way valve allows unidirectional flow from the outside to the inside.

[0014] Furthermore, an inertial control structure is also provided at the right end of the damping structure. The inertial control structure is located on the right side of the drive rod and is used to control the opening between the flow-cutting disk and the flow-guiding disk on the right side by centrifugal force.

[0015] Furthermore, the inertial control structure includes a counterweight block located on the right side of the sealing disk and rotatably connected to the right side of the drive rod, and control rods and limit rods respectively passing through the front and rear parts of the sealing disk along the axial direction. The counterweight block is fan-shaped, and the front and rear parts of the sealing disk are slidably connected to the corresponding control rods and limit rods in the left and right directions, respectively. The control rods and limit rods are respectively fixed on the front and rear sides of the right end of the side flow blocking disk.

[0016] This invention increases the stability of the support plate's movement and the overall structure by setting a guide structure; it also makes the motion impact between the leaf spring and the leaf spring slide seat more smoothly transmitted to the damping structure. This invention effectively transfers most of the mechanical energy of the leaf spring into liquid internal energy by setting a damping structure, thereby reducing the impact of movement between the leaf spring and the leaf spring slide seat and reducing the wear between the leaf spring and the leaf spring. This invention, by setting an inertial control structure, causes the leaf springs on the front and rear sides of the axle to change their supporting force on the vehicle body during cornering, effectively avoiding frequent vehicle tilting during cornering, reducing the probability of vehicle rollover, and improving driving safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the axle structure in this invention; Figure 2 This is a schematic diagram of the structure of the skateboard base in this invention; Figure 3 This is a schematic diagram of the structure of the protrusion in this invention; Figure 4 This is a schematic diagram of the connecting rod in this invention; Figure 5 This is a schematic diagram of the supporting slide bar in this invention; Figure 6This is a schematic diagram of the guide rod in this invention; Figure 7 This is a schematic diagram of the structure of the through hole in this invention; Figure 8 This is a schematic diagram of the limiting rod in this invention; Figure 9 This is a schematic diagram of the counterweight block in this invention; Figure 10 This is a schematic diagram of the drive rod structure in this invention; Figure 11 This is a schematic diagram of the control lever in this invention.

[0018] In the diagram, 1. Axle; 2. Slide plate base; 3. Protrusion; 4. Leaf spring receiving groove; 5. Guide structure; 6. Leaf spring; 7. Upper sliding groove; 8. Lower sliding groove; 9. Supporting slide rod; 10. Connecting rod; 11. Support plate; 12. Guide rod; 13. Receiving through hole; 14. Drive rod; 15. Damping disc; 16. Sealing disc; 17. Support disc; 18. Floating disc; 19. Damping through hole; 20. Flow guide disc; 21. Flow guide hole; 22. Flow interception disc; 23. Positioning disc; 24. Compression spring; 25. One-way valve; 26. Counterweight; 27. Control rod; 28. Limiting rod; 29. ​​Compensating spring; 30. Conical hole; 31. Sphere. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 11 As shown, the semi-enclosed leaf spring sliding plate seat for axles of the present invention includes sliding plate bases 2 respectively disposed on the upper surfaces of the front and rear ends of the left and right axles 1. Each set of sliding plate bases 2 is provided with a protrusion 3 on the upper side. Each set of protrusions 3 has a leaf spring receiving groove 4 opened in the left and right direction on the inner side. The leaf spring receiving groove 4 is closed only on the lower side and the side near the corresponding wheel. A guide structure 5 is provided in the inner cavity of the leaf spring receiving groove 4. The guide structure 5 is slidably disposed in the left and right directions with the protrusion 3 through the inner cavity of the leaf spring receiving groove 4. A damping structure is connected to the outer end of the guide structure 5. The damping structure is used to reduce the left and right sliding speed of the guide structure 5.

[0020] In this invention, two leaf spring sliding plate seats are symmetrically arranged on the same side of the front and rear sides of the left and right axles 1. In the existing structure, the left and right ends of the leaf spring 6 are respectively set in the inner cavity of the corresponding leaf spring receiving groove 4 in the left and right axles 1 and are slidably connected to the corresponding guide structure 5. When the axle 1 moves up and down, the leaf spring 6 undergoes bending deformation. In order to adapt to its own deformation, the two ends of the leaf spring 6 move repeatedly in opposite directions. That is, the kinetic energy of the two ends of the leaf spring 6 moving left and right is transferred to the damping structure through the guide structure 5. The damping structure converts the mechanical energy of the two ends of the leaf spring 6 into internal energy through the damping effect, which can effectively reduce the impact and friction of the two ends of the leaf spring 6 on the leaf spring sliding plate seat, reduce the number of replacements of the leaf spring sliding plate seat, and improve the comfort of the vehicle ride.

[0021] The damping structure can be a rigid structure set in the inner cavity of the leaf spring receiving groove 4 in the prior art (the inner cavity of the leaf spring receiving groove 4 is hardened by surface heat treatment). When the two ends of the leaf spring 6 contact the corresponding inner cavity of the leaf spring receiving groove 4 and move relative to each other, a small part of the mechanical energy of the leaf spring 6 is converted into internal energy through friction, forming a damping effect. The above structure is the prior art and will not be described in detail here.

[0022] In this invention, the guide structure 5 includes an upper sliding groove 7 and a lower sliding groove 8 horizontally disposed on the top and bottom walls of the inner cavity of the leaf spring receiving groove 4. The upper sliding groove 7 and the lower sliding groove 8 are arranged vertically and vertically respectively. A vertical support rod 9 is also slidably disposed between the upper sliding groove 7 and the lower sliding groove 8. That is, the upper and lower ends of the support rod 9 are slidably disposed in the upper sliding groove 7 and the lower sliding groove 8 respectively. The support rod 9 is slidably connected to the protrusion 3 through the upper sliding groove 7 and the lower sliding groove 8.

[0023] like Figure 5 As shown, the end of the support slide rod 9 away from the leaf spring 6 is fixedly connected to the corresponding end of the connecting rod 10, the other end of the horizontally arranged connecting rod 10 is connected to the corresponding end of the vertically arranged support plate 11, and the other end of the support plate 11 is fixedly connected to the damping structure.

[0024] To further improve the stability of the guide structure 5, a guide rod 12 parallel to the connecting rod 10 is fixedly connected to the support plate 11. The guide rod 12 is inserted into the inner wall of the protrusion 3 and is slidably connected to the protrusion 3 from left to right. In this embodiment, each set of support slide rods 9 passes through one end of the corresponding leaf spring 6, and the support slide rod 9 and the corresponding leaf spring 6 are slidably connected from top to bottom. When in use, when the axle 1 bounces up and down, the leaf spring 6 bends and deforms. To adapt to its own deformation, the two ends of the leaf spring 6 move towards or away from each other. That is, the two ends of the leaf spring 6 drive the corresponding support slide rod 9 to move left and right along the upper slide groove 7 and the lower slide groove 8. The support slide rod 9 transmits the mechanical energy of the two ends of the leaf spring 6 to the damping structure through the connecting rod 10.

[0025] Since the leaf spring slide plate seat is set on the upper surface of the slide plate base 2 at both ends of the two axles 1, the structure is the same; in this embodiment, the leaf spring slide plate seat located on the front side of the left axle 1 is selected for structural description. In this invention, the outer wall of the protrusion 3 is provided with a horizontally accommodating through hole 13. A damping structure is coaxially arranged in the inner cavity of the accommodating through hole 13. The damping structure includes a drive rod 14 fixedly connected to the right end face of the support plate 11. A damping disk 15 is coaxially fixed in the middle of the drive rod 14. The damping disk 15 is adapted to the inner diameter of the accommodating through hole 13 and is slidably disposed in the middle of the accommodating through hole 13. The left and right parts of the drive rod 14 are respectively slidably and sealingly disposed with the support disk 17 and the sealing disk 16. The support disk 17 and the sealing disk 16 are fixedly disposed in the accommodating through hole 13. At both the left and right ends, a floating disk 18 is coaxially arranged between the support disk 17 and the damping disk 15, which is adapted to the inner diameter of the receiving through hole 13 and the floating disk 18 is slidably arranged in the receiving through hole 13; the left part of the drive rod 14 is sealed through the floating disk 18 and is slidably connected to the floating disk 18; a variable sealing space is formed between the sealing disk 16 and the floating disk 18, and a variable compensation space is formed between the support disk 17 and the floating disk 18; the sealing space is filled with oil (e.g., hydraulic oil), and the damping disk 15 is uniformly arranged with damping through holes 19 in the circumference.

[0026] Within the compensation space, between the floating disk 18 and the support disk 17, a compensation spring 29, which is always in a compressed state, is coaxially arranged. The left and right ends of the compensation spring 29 are fixedly connected to the support disk 17 and the floating disk 18, respectively. During the left and right movement of the damping disk 15, when the changes in the space on the left and right sides of the damping disk 15 are not equal (when the damping disk 15 moves left and right, the decrease in the space on the left side of the damping disk 15 is not equal to the increase in the space on the right side of the damping disk 15, or the increase in the space on the left side of the damping disk 15 is not equal to the decrease in the space on the right side of the damping disk 15), the floating disk 18 compensates for the change in the sealed space by moving left and right, so that the damping disk 15 can move smoothly left and right. When in use, when the axle 1 bounces up and down, the leaf spring 6 bends and deforms. To adapt to its own deformation, the two ends of the leaf spring 6 move towards or away from each other. That is, the two ends of the leaf spring 6 drive the corresponding support slide rod 9 to move left and right along the upper slide groove 7 and the lower slide groove 8. The support slide rod 9 drives the support plate 11 to move left and right. The support plate 11 drives the drive rod 14 connected to it to move left and right. The drive rod 14 drives the damping disk 15 fixed in the middle of the drive rod 14 to slide left and right in the receiving through hole 13. Since the sealed space is filled with oil, when the damping disk 15 moves to the left (for example, when the road surface is dented while the vehicle is traveling), the oil pressure on the left side of the damping disk 15 increases. The oil slowly enters the right side of the damping disk 15 through the damping through holes 19 that are evenly arranged around the circumference of the damping disk 15. At this time, the damping disk 15 slowly moves to the left. That is, the drive rod 14 connected to the damping disk 15 drives the support slide rod 9 to move slowly to the left. When the damping disc 15 moves to the right (for example, when a bump appears on the road surface while the vehicle is traveling), the hydraulic pressure on the right side of the damping disc 15 increases. The oil slowly enters the left side of the damping disc 15 through the damping through holes 19 that are evenly arranged around the circumference of the damping disc 15. At this time, the damping disc 15 slowly moves to the right, that is, the drive rod 14 connected to the damping disc 15 drives the support slide rod 9 to slowly move to the right.

[0027] When a vehicle is cornering, due to centrifugal force, it experiences a tilting force towards the outside of the curve. This is especially true when the vehicle is heavily loaded and has a high center of gravity. Therefore, a greater supporting force is needed on the outside of the curve (the side furthest from the curve's center) than on the inside (the side closest to the curve's center) to counteract this tilting force. In other words, the damping at the ends of the leaf spring 6 on the outside of the curve is greater than that on the inside, making the leaf spring 6 on the outside less prone to deformation. This means the leaf spring 6 on the outside becomes stiffer than the leaf spring 6 on the inside. The outer side of the vehicle generates greater support force to balance the effect of centrifugal force on the vehicle's center of gravity. To make the damping of the damping structures located on both sides of the axle 1 adjustable, in this embodiment, a set of identical damping valves is coaxially and symmetrically arranged on both the left and right sides of the damping disc 15. Both damping valves on the left and right sides are used to control the flow rate of the damping through-hole 19. The damping valve on the left side includes a guide plate 20 coaxially fixed to the left side of the damping disc 15. The guide plate 20 has a guide hole 21 circumferentially corresponding to the position of the damping through-hole 19, communicating with the damping through-hole 19. A circular throttling plate 22 is coaxially arranged on the left side of the guide plate 20. The flow-stopping plate 22 is slidably connected to the drive rod 14, and its right end face circumferentially covers the left end opening of the guide hole 21. In order to change the flow rate of oil through the guide hole 21 by adjusting the opening between the flow-stopping plate 22 and the guide plate 20, a positioning plate 23 is coaxially fixed on the drive rod 14 to the left of the flow-stopping plate 22. A compression spring 24 that is always in a compressed state is set between the flow-stopping plate 22 and the positioning plate 23. Each set of guide holes 21 inside the guide plate 20 is provided with a one-way valve 25 in the radial direction. The inner end of the one-way valve 25 is connected to the guide hole 21, and the outer end is connected to the external sealing space of the flow-stopping plate 22. That is, the one-way valve 25 guides in one direction from the outside to the inside.

[0028] In this embodiment, the circumferential surface of the guide plate 20 is provided with a plurality of conical holes 30 communicating with the guide passage 21. The one-way valve 25 is a ball 31 disposed in the conical hole 30. The cross-sectional area of ​​the conical hole 30 gradually decreases outward along the radial direction. In use, the oil in the guide passage 21 pushes the ball 31 to the smallest end of the conical hole 30 to block the conical hole 30. When the hydraulic pressure of the oil in the accommodating through hole 13 increases, the oil pressures the ball 31 to move towards the large end of the conical hole 30, so that a gap is generated between the ball 31 and the conical hole 30, and the oil enters the guide passage 21 from the gap between the conical hole 30 and the ball 31.

[0029] When the vehicle is on a curve, the opening between the interceptor plate 22 and the guide plate 20 is automatically adjusted by the centrifugal force.

[0030] In this invention, an inertial control structure is also provided at the right end of the damping structure. The inertial control structure is located on the right side of the drive rod 14. The inertial control structure is used to control the opening between the flow-blocking disk 22 and the flow-guiding disk 20 on the right side by centrifugal force.

[0031] In this invention, the inertial control structure includes a counterweight 26 disposed on the right side of the sealing disk 16 and rotatably connected to the right side of the drive rod 14, and a control rod 27 and a limiting rod 28 respectively passing through the front and rear parts of the sealing disk 16 along the axial direction. The counterweight 26 is fan-shaped, and the front and rear parts of the sealing disk 16 are slidably connected to the corresponding control rod 27 and limiting rod 28 in the left and right directions, respectively. The control rod 27 and the limiting rod 28 are respectively fixed on the front and rear sides of the right end face of the right side intercepting disk 22.

[0032] In its natural state (when the vehicle is moving smoothly), the counterweight 26 has its fan-shaped center of gravity below the drive rod 14. The right end of the limit rod 28 extends to a set position on the upper surface of the counterweight 26. The right end of the control rod 27 is higher than the upper surface of the counterweight 26, and the right end of the control rod 27 maintains a set gap with the left end of the counterweight 26. The set gap allows the counterweight 26 to rotate to the corresponding position on the right end of the control rod 27 under the action of centrifugal force, thereby limiting the rightward movement of the control rod 27. When the centrifugal force is directed backward, the counterweight 26 has a tendency to rotate backward. Under the restriction of the limiting rod 28, the counterweight 26 cannot rotate backward, and the opening between the flow intercepting plate 22 and the flow guiding plate 20 is not restricted by the counterweight 26. When the centrifugal force points forward, the counterweight 26 rotates forward until its left end face corresponds to the right end face of the control rod 27. The counterweight 26 restricts the forward movement of the control rod 27, that is, the opening between the flow-blocking plate 22 and the flow-guiding plate 20 is restricted by the counterweight 26.

[0033] In this embodiment, the front and rear sets of leaf spring slide seats on the same axle 1 are symmetrically arranged.

[0034] When the vehicle travels in a straight line, the axle 1 bounces up and down, causing the leaf spring 6 to bend. To adapt to this deformation, the two ends of the leaf spring 6 move in opposite directions, driving the corresponding support slide rods 9 to move left and right along the upper slide groove 7 and the lower slide groove 8. The support slide rods 9 drive the support plate 11 to move left and right, which in turn drives the connected drive rod 14 to move left and right. The drive rod 14 drives the damping disc 15, fixed in the middle of the drive rod 14, to slide left and right within the accommodating through hole 13. Because the sealed space is filled with oil, when the damping disc 15 moves to the left (e.g., when the road surface becomes concave), the hydraulic pressure on the left side of the damping disc 15 increases, and the left... Driven by the compression spring 24, the side throttling plate 22 is pressed against the left end opening of the guide hole 21 of the guide plate 20. The oil flows into the guide hole 21 through the one-way valve 25 circumferentially of the guide plate 20 on the left side, and flows into the guide hole 21 on the right side through the damping through hole 19 of the damping plate 15. Since the one-way valve 25 on the right side of the damping plate 15 cannot be opened outward, the oil can only flow out slowly by squeezing the throttling plate 22 set at the opening on the right side of the guide hole 21. At this time, the damping plate 15 slowly moves to the left, that is, the drive rod 14 connected to the damping plate 15 drives the support slide rod 9 to slowly move to the left. When the damping disc 15 moves to the right (for example, when a depression appears on the road surface while the vehicle is traveling), the hydraulic pressure on the right side of the damping disc 15 increases. Driven by the compression spring 24, the right-side throttling disc 22 presses against the right end opening of the guide hole 21 of the guide disc 20. The oil flows into the guide hole 21 through the one-way valve 25 circumferentially on the right side of the guide disc 20, and then flows into the guide hole 21 on the left side through the damping through hole 19 of the damping disc 15. Since the one-way valve 25 on the left side of the damping disc 15 cannot be open to the outside, the oil can only flow out slowly by squeezing the throttling disc 22 set at the left opening of the guide hole 21, so that an opening is formed between the throttling disc 22 and the guide disc 20. At this time, the damping disc 15 moves slowly to the right, that is, the drive rod 14 connected to the damping disc 15 drives the support slide rod 9 to move slowly to the right. like Figure 1 As shown, the right side of the vehicle is defined as the front direction, and the left side of the vehicle is defined as the rear direction. When the vehicle turns left, the counterweight 26 on the leaf spring slide seat on the front side (outside of the curve) of the axle 1 rotates forward under the drive of centrifugal force until the control lever 27 is close to the leaf spring 6. The counterweight 26 restricts the increase of the opening between the throttling plate 22 and the guide plate 20 through the control lever 27. At this time, the throttling plate 22 connected to the control lever 27 cannot continue to move closer to the leaf spring 6 to form a larger opening with the guide plate 20. That is, it is difficult for the two ends of the leaf spring slide seat on the front side of the axle 1 to move towards each other and deform the leaf spring 6. However, the counterweight 26 on the leaf spring slide seat on the rear side (inside the curve) of axle 1 tends to rotate forward under the drive of centrifugal force. Since the front and rear leaf spring slide seats on the same set of axles 1 are symmetrically arranged, the counterweight 26 on the rear leaf spring slide seat of axle 1 rotates forward. The front limit rod 28 is located on the upper surface of the counterweight 26, which restricts the forward rotation of the counterweight 26. Moreover, the rear control rod 27 is located above the upper surface of the counterweight 26, so the counterweight 26 cannot restrict the control rod 27. At this time, the flow-cutting plate 22 connected to the control lever 27 can move towards the leaf spring 6 to form a larger opening with the flow-guide plate 20. That is, the two ends of the leaf spring 6, which are respectively located on the leaf spring slide seat on the rear side of the axle 1, can move towards each other more easily, making the leaf spring 6 more easily deformed. That is, the leaf spring 6 on the outside of the curve becomes stiffer than the leaf spring 6 on the inside of the curve, providing greater support for the outside of the vehicle.

[0035] When the vehicle turns right, the counterweight 26 on the leaf spring slide seat on the rear side (outside of the curve) of the axle 1 rotates backward under the drive of centrifugal force until the control lever 27 is close to the leaf spring 6. Under the restriction of the counterweight 26, the flow-cutting plate 22 connected to the control lever 27 cannot move closer to the leaf spring 6 to form a larger opening with the flow-guide plate 20. That is, the two ends of the leaf spring slide seat on the rear side of the axle 1 cannot move towards each other to cause the leaf spring 6 to produce a larger deformation. However, the counterweight 26 on the leaf spring slide seat on the front side (inside the curve) of the axle 1 tends to rotate backward under the drive of centrifugal force. Since the front and rear leaf spring slide seats on the same set of axles 1 are symmetrically arranged, when the counterweight 26 rotates backward, the limiting rods 28 behind the counterweight 26 are all located on the upper surface of the counterweight 26, which restricts the backward rotation of the counterweight 26. In addition, the control rod 27 is located above the upper surface of the counterweight 26, so the counterweight 26 cannot restrict the control rod 27. At this time, the flow-cutting plate 22 connected to the control lever 27 can move closer to the leaf spring 6 to form a larger opening between it and the flow-guide plate 20. That is, the two ends of the leaf spring 6 on the leaf spring slide seat on the front side of the axle 1 can move towards each other, making the leaf spring 6 more easily deformable. That is, the leaf spring 6 on the outside of the curve becomes stiffer than the leaf spring 6 on the inside of the curve, providing greater support for the outside of the vehicle.

Claims

1. A semi-enclosed leaf spring sliding plate seat for vehicle axles, characterized in that: The system includes skateboard bases mounted on the upper surfaces of the left and right axles. Each skateboard base has a protrusion on its upper side, and a leaf spring receiving groove is formed on the inner side of each protrusion along the left-right direction. A guide structure is provided in the inner cavity of the leaf spring receiving groove, and the guide structure slides left and right with the protrusion through the inner cavity of the leaf spring receiving groove. A damping structure is connected to the outer end of the guide structure, and the damping structure controls the left-right sliding speed of the guide structure. The guide structure includes an upper sliding groove and a lower sliding groove horizontally set on the top and bottom walls of the inner cavity of the leaf spring receiving groove. A vertical support rod is also slidably set between the upper sliding groove and the lower sliding groove, and the two ends of the connecting rod are fixedly connected to the end of the support rod away from the leaf spring and the corresponding end of the vertically set support plate, respectively. The other end of the support plate is fixedly connected to the damping structure. The outer wall of the protrusion has a... The device has horizontally accommodating through holes on both sides, with a damping structure coaxially arranged inside the through holes. The damping structure includes a drive rod fixedly connected to the right end face of the support plate, with a damping disk coaxially fixed in the middle of the drive rod. The damping disk is adapted to the inner diameter of the through holes and slidably disposed in the middle of the through holes. The left and right parts of the drive rod are respectively slidably and sealingly disposed with the support disk and the sealing disk. The support disk and the sealing disk are fixedly disposed at the left and right ends inside the through holes. A floating disk adapted to the inner diameter of the through holes and slidably disposed in the through holes is coaxially disposed between the support disk and the damping disk. The left part of the drive rod is sealed through the floating disk and slidably connected to the floating disk. The variable sealing space formed between the sealing disk and the floating disk is filled with oil, and a variable compensation space is formed between the support disk and the floating disk. Damping through holes are uniformly arranged circumferentially on the damping disk.

2. The semi-enclosed leaf spring sliding plate seat for axles according to claim 1, characterized in that: The support plate is fixedly connected with a guide rod parallel to the connecting rod. The guide rod is inserted into the inner wall of the protrusion and is slidably connected to the protrusion from left to right. Each set of support slide rods passes through one end of the corresponding leaf spring and is slidably connected to the leaf spring.

3. The semi-enclosed leaf spring sliding plate seat for axles according to claim 1, characterized in that: A compensating spring, which is always in a compressed state, is also coaxially arranged between the floating disk and the support disk. The left and right ends of the compensating spring are fixedly connected to the support disk and the floating disk, respectively.

4. The semi-enclosed leaf spring sliding plate seat for axles according to claim 3, characterized in that: The damping disc is provided with a set of damping valves with the same structure on both the left and right sides, and the damping valves on both sides are used to control the flow rate of the damping through hole.

5. The semi-enclosed leaf spring sliding plate seat for axles according to claim 4, characterized in that: The damping valve includes a guide plate coaxially fixed on the left side of the damping disc. A guide hole communicating with the damping through hole is opened on the circumference of the guide plate at the position corresponding to the damping through hole. A circular throttling disc is coaxially arranged on the left side of the guide plate. The throttling disc is slidably connected to the drive rod. The right end face of the throttling disc circumferentially covers the left end opening of the guide hole. A positioning disc is coaxially fixed on the drive rod to the left of the throttling disc. A compression spring that is always in a compressed state is arranged between the throttling disc and the positioning disc. A one-way valve is arranged radially in each group of guide holes inside the guide plate. The inner end of the one-way valve is connected to the guide hole, and the outer end is connected to the external sealing space of the throttling disc. That is, the one-way valve guides unidirectionally from the outside to the inside.

6. The semi-enclosed leaf spring sliding plate seat for axles according to claim 5, characterized in that: The damping structure is also provided with an inertial control structure on the right side. The inertial control structure is located on the right side of the drive rod and is used to control the opening between the flow-cutting disk and the flow-guiding disk on the right side by centrifugal force.

7. The semi-enclosed leaf spring sliding plate seat for axles according to claim 6, characterized in that: The inertial control structure includes a counterweight block located on the right side of the sealing disk and rotatably connected to the right side of the drive rod, and control rods and limit rods respectively passing through the front and rear parts of the sealing disk along the axial direction. The counterweight block is fan-shaped, and the front and rear parts of the sealing disk are slidably connected to the corresponding control rods and limit rods in the left and right directions, respectively. The control rods and limit rods are fixed on the front and rear sides of the right end of the flow-cutting disk, respectively.

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