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CN-117162717-B - Spiral spring suspension with adjustable and changeable rigidity

CN117162717BCN 117162717 BCN117162717 BCN 117162717BCN-117162717-B

Abstract

The application relates to a spiral spring suspension with adjustable and changeable rigidity, which relates to the technical field of vehicle machinery and comprises two suspension devices arranged on two sides of a vehicle body and connected with wheel shafts on two sides of the vehicle body, and a connecting mechanism for connecting the two suspension devices, wherein the suspension devices comprise a rotating rod, a mounting frame, a pull rod, a buffer sleeve, a buffer spring and a fixing component. The application drives the installation frame to move through the movement of the wheel shaft of the vehicle body, the installation frame moves to drive the rotating rod and the pull rod to move, the pull rod moves to drive the damping piece to move, the buffer spring is extruded to the buffer spring, and the impact force generated by the movement of the wheel shaft is damped and buffered.

Inventors

  • TU FUJIE
  • Luo Senlong
  • LOU FENG
  • ZHU TIANJUN
  • Lou Shenghao
  • WANG XINYAO

Assignees

  • 浙江富淳弹簧有限公司

Dates

Publication Date
20260512
Application Date
20230904

Claims (8)

  1. 1. The coil spring suspension with adjustable and changeable rigidity is characterized by comprising two suspension devices (1) arranged on two sides of a vehicle body and connected with wheel shafts on two sides of the vehicle body, and a connecting mechanism (2) for connecting the two suspension devices (1), wherein the suspension devices (1) comprise: the rotating rod (11) is rotatably arranged on the vehicle body; The mounting frame (12), the said mounting frame (12) is set up on turning rod (11), the wheel axle of the car body rotates and installs on said mounting frame (12); the pull rod (13) is rotatably arranged on the mounting frame (12); the buffer sleeve (14), the buffer sleeve (14) is arranged on the vehicle body, three damping sheets (17) are arranged in the buffer sleeve (14) in a sliding manner along the axial direction, the three damping sheets (17) divide the buffer sleeve (14) into three buffer spaces, and the pull rod (13) is connected with the damping sheets (17); The buffer springs (15), the buffer springs (15) are provided with three, the buffer springs (15) are divided into a first spring (151), a second spring (152) and a third spring (153), the first spring (151), the second spring (152) and the third spring (153) are respectively arranged in three buffer spaces of the buffer sleeve (14) and are respectively connected with three damping sheets (17), the wire diameters and the coil numbers of the first spring (151), the second spring (152) and the third spring (153) are different, the wire diameter and the coil number of the first spring (151) are both larger than those of the second spring (152), the wire diameter and the coil number of the second spring (152) are both larger than those of the third spring (153), the first spring (151) is located in the buffer space on one side of the buffer sleeve (14) close to the inner bottom wall, the third spring (153) is located in the buffer space on one side of the buffer sleeve (14) close to the opening, and the second spring (152) is located in the buffer space between the first spring (151) and the third spring (153); and the fixing assembly (16) is arranged on the vehicle body and is used for fixing the relative position between the damping sheet (17) and the damping sleeve (14).
  2. 2. A variable stiffness coil spring suspension according to claim 1, wherein one of three damper plates (17) connected to a first spring (151) and a second spring (152) is provided as a first plate (171), one damper plate (17) connected to the second spring (152) and a third spring (153) is provided as a second plate (172), one damper plate (17) connected to the third spring (153) is provided as a third plate (173), the fixing member (16) is provided with two sets, and the two sets of the fixing members (16) are respectively used for fixing relative positions between the first plate (171) and the second plate (172) and a cushion collar (14), the fixing member (16) includes: A fixed ring (31), the fixed ring (31) being rotatably mounted on the buffer sleeve (14); The fixed teeth (32), the fixed teeth (32) are arranged on the fixed ring (31) and are in interference with the second sheet (172), a sliding gap is formed in the second sheet (172), and the sliding gap can be used for the fixed teeth (32) to pass through; and the driving piece (33) is arranged on the vehicle body and is used for driving the fixing ring (31) to rotate.
  3. 3. A variable stiffness coil spring suspension according to claim 2, wherein said drive member (33) comprises: A pressure sensor provided on the second sheet (172) and the first sheet (171) and sensing pressure to which the second sheet (172) and the first sheet (171) are subjected; The pushing block (35) is arranged on the outer side wall of the buffer sleeve (14) along the circumferential direction of the outer side wall, the pushing block (35) is arranged on the fixed ring (31) and positioned in the sliding groove, and one end of the pushing block (35) far away from the fixed ring (31) penetrates out of the sliding groove and extends out of the buffer sleeve (14); The electric push rod (36), the said electric push rod (36) is connected with pushing block (35); The controller is arranged on the vehicle body, and is electrically connected with the pressure sensor and the electric push rod (36), and the controller is used for receiving the electric signal of the pressure sensor and controlling the electric push rod (36) to push the push block (35).
  4. 4. A variable stiffness coil spring suspension according to claim 2, characterized in that the tie rod (13) and the third plate (173) are connected together by a transmission mechanism (4), the transmission mechanism (4) comprising: A torsion bar (41), the torsion bar (41) being rotatably provided on the vehicle body; The first transmission rod (42), one end of the first transmission rod (42) is arranged on the torsion bar (41), the axial direction of the first transmission rod (42) is perpendicular to the axial direction of the torsion bar (41), and the other end of the first transmission rod (42) is rotationally connected with the pull rod (13); A second transmission rod (43), wherein the second transmission rod (43) is arranged on the torsion rod (41), and the axial direction of the second transmission rod (43) is perpendicular to the axial direction of the torsion rod (41); One end of the third transmission rod (44) is rotationally connected with the third sheet (173), and the other end of the third transmission rod (44) is rotationally connected with the second transmission rod (43); A damping assembly (45), the damping assembly (45) being provided on the vehicle body and being adapted to provide damping to the rotation of the torsion bar (41).
  5. 5. A variable stiffness coil spring suspension according to claim 4 wherein said damping assembly (45) comprises: A hydraulic cylinder (46), the hydraulic cylinder (46) being provided on the vehicle body; And one end of the fourth transmission rod (47) is arranged on the torsion bar (41), and the other end of the fourth transmission rod (47) is rotationally connected with a piston rod of the hydraulic oil cylinder (46).
  6. 6. The stiffness adjustable variable coil spring suspension according to claim 4, wherein said connecting mechanism (2) comprises: The two connecting shaft rods (21) are rotatably arranged on the vehicle body and are in a vertical state, and third transmission rods (44) on the two suspension devices (1) are rotatably connected with the two connecting shaft rods (21) respectively; the double-piston-rod hydraulic cylinder (22), the double-piston-rod hydraulic cylinder (22) is arranged on the vehicle body, and two piston rods of the double-piston-rod hydraulic cylinder (22) are respectively in sliding and rotating connection with two connecting shafts (21).
  7. 7. The spiral spring suspension with adjustable and changeable rigidity according to claim 1 is characterized in that anti-tilting rods (5) are arranged on rotating rods (11) on two suspension devices (1), and two ends of each anti-tilting rod (5) are respectively connected with the two rotating rods (11).
  8. 8. A coil spring suspension with adjustable and changeable rigidity according to claim 1, wherein the rotating rod (11) comprises two long rods (111) and a cross rod (112), one ends of the two long rods (111) are rotatably arranged on a vehicle body, the other ends of the two long rods (111) are connected with the mounting frame (12), the distance between the connecting ends of the two long rods (111) and the mounting frame (12) is smaller than the distance between the connecting ends of the two long rods (111) and the vehicle body, and the cross rod (112) is horizontally arranged on the two long rods (111) and is positioned between the two long rods (111).

Description

Spiral spring suspension with adjustable and changeable rigidity Technical Field The application relates to the technical field of vehicle machinery, in particular to a spiral spring suspension with adjustable and changeable rigidity. Background Spring suspensions are a common type of vehicle suspension system for supporting and dampening rough surfaces and impacts encountered by a vehicle during travel. It mainly consists of springs, dampers and other connectors. The main function of the suspension spring is to support and dampen the weight of the vehicle, absorb and dampen the impact and vibration caused by uneven road surfaces. When the vehicle runs, the suspension springs are compressed and stretched, and the road impact force is absorbed and dispersed through elastic deformation, so that a smoother running experience is provided. Suspension springs, while having many advantages as a common suspension system component, have technical drawbacks in that generally the stiffness of a suspension spring is nonlinear, i.e., the stiffness varies with changes in compression or tension over the range of spring forces, which can lead to inconsistent response of the suspension system under different road conditions or forces, thereby affecting the stability of travel and accuracy of suspension adjustment. Disclosure of Invention In order to improve the application range of the vehicle suspension under different road conditions or stress conditions, the application provides the spiral spring suspension with adjustable and changeable rigidity. The application provides a spiral spring suspension with adjustable and changeable rigidity, which adopts the following technical scheme: A coil spring suspension having a rigidity-adjustable change, comprising two suspension devices provided on both sides of a vehicle body and connected to wheel axles on both sides of the vehicle body, and a connecting mechanism connecting the two suspension devices, the suspension devices comprising: the rotating rod is rotatably arranged on the vehicle body; the mounting frame is arranged on the rotating rod, and the wheel axle of the vehicle body is rotatably arranged on the mounting frame; the pull rod is rotatably arranged on the mounting frame; The buffer sleeve is arranged on the vehicle body, three damping sheets are axially slidably arranged in the buffer sleeve, the three damping sheets divide the buffer sleeve into three buffer spaces, and the pull rod is connected with the damping sheets; The damping device comprises three damping springs, wherein the three damping springs are divided into a first spring, a second spring and a third spring, the first spring, the second spring and the third spring are respectively arranged in three damping spaces of a damping sleeve and are respectively connected with three damping plates, the wire diameters and the coil numbers of the first spring, the second spring and the third spring are different, the wire diameters and the coil numbers of the first spring are both larger than those of the second spring, the wire diameters and the coil numbers of the second spring are both larger than those of the third spring, the first spring is positioned in the damping space of one side of the damping sleeve, which is close to the inner bottom wall, of the damping sleeve, the third spring is positioned in the damping space of one side of the damping sleeve, which is close to the opening, and the second spring is positioned in the damping space between the first spring and the third spring; And the connecting component is arranged on the vehicle body and used for fixing the relative position between the damping sheet and the damping sleeve. Through the technical scheme, when the vehicle body encounters an uneven road surface or impact, the wheel shaft of the vehicle body moves to drive the mounting frame to move, the mounting frame moves to drive the rotating rod and the pull rod to move, the pull rod moves to drive the damping sheet to move to squeeze the damping spring to perform damping and buffering on the impact force generated by the wheel shaft movement, the relative positions between the damping sheet and the damping sleeve are fixed through the fixing component, when the wheel shaft is stressed less, the damping sheet and the damping sleeve on the first spring and the damping sheet and the damping sleeve on the second spring can be fixed, and only the damping and buffering functions on the wheel shaft can be realized through the third spring. Optionally, set three among the shock absorbing sheets with first spring coupling's shock absorbing sheet is first piece, with second spring coupling's shock absorbing sheet is second piece, with third spring coupling's shock absorbing sheet is third piece, fixed subassembly is provided with two sets of, two sets of fixed subassembly is used for fixing the relative position between first piece and second piece and the buffer tube respectively, fixed subassembly