Height adjustment method, equipment, device and storage medium for leaf spring suspension

Abstract

A method, device, equipment and storage medium for adjusting the height of a leaf spring suspension, comprising: generating a first balance equation based on the compression of the spring, the calculated suspension spring axle end reaction force and the preset suspension spring stiffness; establishing a coordinate system, and generating a second balance equation and a third balance equation based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the compression of the spring, the suspension spring axle end reaction force and the suspension spring stiffness; calculating the compression of the spring based on a preset plane constraint auxiliary equation, the first balance equation, the second balance equation and the third balance equation; and calculating the difference based on the compression of the spring, the preset spring center distance and the preset vehicle body outer edge width to put the vehicle body in a balanced state, thereby solving the problem that it is difficult to accurately judge the subtle differences in vehicle body height manually and adjust the vehicle body to a balanced state.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, device, equipment and computer-readable storage medium for adjusting the height of a leaf spring suspension. Background Art

[0002] In modern automotive engineering, a vehicle's driving performance is closely linked to the stability of its body posture. As the vehicle's critical load-bearing structure, maintaining consistent height between the left and right sides is a crucial prerequisite for ensuring excellent handling, driving stability, and ride comfort. However, in actual production, uneven heights and resulting skew in the body are common, negatively impacting the vehicle's overall performance. From a vehicle design and manufacturing perspective, despite the implementation of various measures to ensure structural symmetry and accurate component installation during production, completely eliminating body skew remains difficult due to the combined effects of various factors.

[0003] Currently, common detection and solutions for the problem of uneven height and skew on the left and right sides of a vehicle body have certain limitations. Traditional manual visual inspection methods are highly subjective and difficult to accurately determine even subtle differences in vehicle height. Alternatively, equipment such as four-wheel aligners are used for testing, but these devices primarily focus on measuring wheel alignment parameters, have limited accuracy for detecting overall vehicle height differences, and are unable to fully adjust the vehicle body for balance. Summary of the Invention

[0004] The present application provides a height adjustment method, device, equipment and computer-readable storage medium for a leaf spring suspension, which can solve the technical problems in the prior art of difficulty in accurately judging subtle differences in vehicle body height and inability to fully adjust the vehicle body to a balanced state.

[0005] In a first aspect, an embodiment of the present application provides a method for adjusting the height of a leaf spring suspension, the method comprising:

[0006] generating a first equilibrium equation based on the spring compression, the calculated suspension spring axle-end reaction force, and the preset suspension spring stiffness, wherein the suspension spring axle-end reaction force includes the left front suspension spring axle-end reaction force, the right front suspension spring axle-end reaction force, the left rear suspension spring axle-end reaction force, and the right rear suspension spring axle-end reaction force; the preset suspension spring stiffness includes the left front suspension spring stiffness, the right front suspension spring stiffness, the left rear suspension spring stiffness, and the right rear suspension spring stiffness; and the spring compression includes the compression of the left front spring, the right front spring, the left rear spring, and the right rear spring;

[0007] Establish a coordinate system and generate the second and third equilibrium equations based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the reaction force of the suspension spring axle end, and the suspension spring stiffness;

[0008] Calculating the compression amount of the spring according to the preset plane constraint auxiliary equation, the first equilibrium equation, the second equilibrium equation, and the third equilibrium equation;

[0009] According to the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width, the difference is calculated to adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state.

[0010] In combination with the first aspect, in one embodiment, the suspension spring axle end reaction force includes a left front suspension spring axle end reaction force, a right front suspension spring axle end reaction force, a left rear suspension spring axle end reaction force, and a right rear suspension spring axle end reaction force; and the calculated suspension spring axle end reaction force includes:

[0011] Calculate the left front wheel center end load and the right front wheel center end load based on the preset left front wheel load, preset right front wheel load and preset front axle unsprung mass of the vehicle suspension;

[0012] Calculate the left rear wheel center end load and the right rear wheel center end load based on the preset left rear wheel load, preset right rear wheel load and preset rear axle unsprung mass of the vehicle suspension;

[0013] Calculating the axle-end reaction force of the left front suspension spring and the axle-end reaction force of the right front suspension spring according to the left front wheel center end load mass, the right front wheel center end load mass, the preset front wheelbase, and the preset front spring center distance;

[0014] The left rear suspension spring axle end reaction force and the right rear suspension spring axle end reaction force are calculated respectively according to the left rear wheel center end load mass, the right rear wheel center end load mass, the preset rear wheelbase, and the preset rear spring center distance.

[0015] In conjunction with the first aspect, in one embodiment, establishing a coordinate system generates a second equilibrium equation and a third equilibrium equation based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the compression of the springs, the reaction force of the suspension spring axle ends, and the preset suspension spring stiffness, including:

[0016] Establish a coordinate system and determine the relative position of the sprung mass center of gravity O on the x-axis based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis;

[0017] generating a second equilibrium equation based on the relative position of the sprung mass center of gravity O on the x-axis, the compression of the spring, the axle end reaction force of the suspension spring, and the preset suspension spring stiffness;

[0018] Determine the relative position of the sprung mass center of gravity O on the y-axis based on the moment balance of the four spring axle ends of the left and right suspensions about the y-axis;

[0019] A third equilibrium equation is generated based on the relative position of the sprung mass center of gravity O on the y-axis, the compression of the spring, the suspension spring axle end reaction force, the preset spring center distance, and the preset suspension spring stiffness.

[0020] In conjunction with the first aspect, in one embodiment, determining the relative position of the sprung mass center of gravity O on the x-axis based on the moment balance of the four spring axle ends of the front and rear suspensions about the y-axis includes:

[0021] According to the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force and the total suspension spring axle end reaction force are obtained;

[0022] Calculating a first relative position of the sprung mass center of gravity O on the x-axis based on the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, a preset wheelbase, and the total suspension spring axle end reaction force;

[0023] A second relative position of the sprung mass center of gravity O on the x-axis is calculated based on the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force, the preset wheelbase, and the total suspension spring axle end reaction force.

[0024] In conjunction with the first aspect, in one embodiment, determining the relative position of the sprung mass center of gravity O on the y-axis based on the moment balance of the four spring axle ends of the left and right suspensions about the y-axis includes:

[0025] According to the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring axle end reaction force of the left front suspension, the spring axle end reaction force of the right front suspension, the spring axle end reaction force of the left rear suspension, the spring axle end reaction force of the right rear suspension, and the total spring axle end reaction force of the suspension are obtained;

[0026] The relative position of the sprung mass center of gravity O on the y-axis is calculated based on the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force, the total suspension spring axle end reaction force, and the preset spring center distance.

[0027] In conjunction with the first aspect, in one embodiment, the compression amount of the spring includes the compression amount of the left front spring and the compression amount of the right front spring, and the preset front spring center distance includes the preset front spring center distance; and the step of calculating the difference based on the compression amount of the spring, the preset spring center distance, and the preset vehicle body outer edge width to adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state includes:

[0028] Calculating the left-right difference at the front axle based on the compression amount of the left front spring, the compression amount of the right front spring, the preset front spring center distance, and the preset vehicle body outer edge width;

[0029] The pad thickness or the leaf spring arc height is adjusted by the left and right difference at the front axle to keep the vehicle body in a balanced state.

[0030] In conjunction with the first aspect, in one embodiment, the compression amount of the spring includes the compression amount of the left rear spring and the compression amount of the right rear spring, and the preset spring center distance includes the preset rear spring center distance; and the step of calculating the difference based on the spring compression amount, the preset spring center distance, and the preset vehicle body outer edge width to adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state includes:

[0031] Calculating the left-right difference at the rear axle based on the compression amount of the left rear spring, the compression amount of the right rear spring, the preset rear spring center distance, and the preset vehicle body outer edge width;

[0032] The pad thickness or the leaf spring arc height is adjusted by the left and right difference at the rear axle to keep the vehicle body in a balanced state.

[0033] In a second aspect, an embodiment of the present application provides a height adjustment device for a leaf spring suspension, the height adjustment device for a leaf spring suspension comprising:

[0034] a first generating module for generating a first equilibrium equation according to the compression amount of the spring, the calculated suspension spring axle end reaction force, and the preset suspension spring stiffness;

[0035] The second generation module is used to establish a coordinate system and generate the second and third equilibrium equations based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the suspension spring axle end reaction force, and the suspension spring stiffness;

[0036] a calculation module, configured to calculate the compression amount of the spring based on a preset plane constraint auxiliary equation, the first balance equation, the second balance equation, and the third balance equation;

[0037] The calculation and adjustment module is used to calculate the difference according to the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width, and adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state.

[0038] In a third aspect, an embodiment of the present application provides a height adjustment device for a leaf spring suspension, wherein the height adjustment device for the leaf spring suspension includes a processor, a memory, and a height adjustment program for the leaf spring suspension stored on the memory and executable by the processor, wherein when the height adjustment program for the leaf spring suspension is executed by the processor, the steps of the height adjustment method for the leaf spring suspension as described above are implemented.

[0039] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a height adjustment program for a leaf spring suspension is stored, wherein when the height adjustment program for the leaf spring suspension is executed by a processor, the steps of the height adjustment method for the leaf spring suspension as described above are implemented.

[0040] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0041] The first balance equation is generated based on the compression of the spring, the calculated reaction force of the suspension spring axle end and the preset suspension spring stiffness; a coordinate system is established, and the second balance equation and the third balance equation are generated based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the compression of the spring, the reaction force of the suspension spring axle end and the suspension spring stiffness; the compression of the spring is calculated based on the preset plane constraint auxiliary equation, the first balance equation, the second balance equation and the third balance equation; the difference is calculated based on the compression of the spring, the preset spring center distance and the preset vehicle body outer edge width to adjust the pad thickness or the leaf spring arc height to make the vehicle body in a balanced state, which solves the technical problem in the related art that it is difficult to accurately judge the subtle differences in vehicle body height and cannot fully adjust the vehicle body to reach a balanced state. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a flow chart of a first embodiment of a method for adjusting the height of a leaf spring suspension of the present application;

[0043] Figure 2 is a schematic diagram of the position of the sprung mass center on the x-axis in this application;

[0044] Figure 3 is a schematic diagram of the position of the sprung mass center on the y-axis in this application;

[0045] Figure 4This is a schematic diagram of the functional modules of an embodiment of a height adjustment device for a leaf spring suspension of the present application;

[0046] Figure 5 This is a schematic diagram of the hardware structure of the height adjustment device of the leaf spring suspension involved in the embodiment of the present application. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] First, some technical terms in this application are explained to facilitate those skilled in the art to understand this application.

[0049] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0050] In a first aspect, an embodiment of the present application provides a method for adjusting the height of a leaf spring suspension.

[0051] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the height adjustment method of the leaf spring suspension of this application. Figure 1 As shown, the height adjustment methods of the leaf spring suspension include:

[0052] Step S10: generating a first equilibrium equation based on the compression amount of the spring, the calculated suspension spring axle end reaction force, and the preset suspension spring stiffness;

[0053] Exemplarily, the suspension spring axle-end reaction force includes the left front suspension spring axle-end reaction force, the right front suspension spring axle-end reaction force, the left rear suspension spring axle-end reaction force, and the right rear suspension spring axle-end reaction force; the preset suspension spring stiffness includes the left front suspension spring stiffness, the right front suspension spring stiffness, the left rear suspension spring stiffness, and the right rear suspension spring stiffness; the spring compression includes the compression of the left front spring, the compression of the right front spring, the compression of the left rear spring, and the compression of the right rear spring. Based on the spring compression, the calculated suspension spring axle-end reaction force, and the preset suspension spring stiffness, a first equilibrium equation is generated: F1+F2+F3+F4-(k1a z +k2o z +k3c z +k4b z)=0, where F1 is the axle-end reaction force of the left front suspension spring, F2 is the axle-end reaction force of the right front suspension spring, F3 is the axle-end reaction force of the left rear suspension spring, F4 is the axle-end reaction force of the right rear suspension spring, k1 is the spring stiffness of the left front suspension, k2 is the spring stiffness of the right front suspension, k3 is the spring stiffness of the left rear suspension, k4 is the spring stiffness of the right rear suspension, and a z is the compression of the left front spring, o z is the compression of the right front spring, c z is the compression of the left rear spring, b z is the compression of the right rear spring.

[0054] Specifically, the calculated suspension spring axle-end reaction force includes: calculating the left front wheel center end load and the right front wheel center end load according to the preset left front wheel load, the preset right front wheel load and the preset front spring center distance of the vehicle suspension; calculating the left rear wheel center end load and the right rear wheel center end load according to the preset left rear wheel load, the preset right rear wheel load and the preset rear spring center distance of the vehicle suspension; calculating the left rear suspension spring axle-end reaction force and the right rear suspension spring axle-end reaction force according to the right front wheel center end load, the right front wheel center end load, the preset front wheelbase and the preset front spring center distance; calculating the left front suspension spring axle-end reaction force and the right front suspension spring axle-end reaction force according to the left rear wheel center end load, the right rear wheel center end load, the preset rear wheelbase and the preset rear spring center distance.

[0055] Exemplarily, the left front wheel center end load and the right front wheel center end load are calculated based on the preset left front wheel load, the preset right front wheel load and the preset front spring center distance of the vehicle suspension. Exemplarily, the left front wheel center end load is calculated based on the preset left front wheel load and the preset front spring center distance of the vehicle suspension; the right front wheel center end load is calculated based on the preset right front wheel load and the preset front spring center distance of the vehicle suspension. For example, the formula G1-0.5mu is obtained. f =mt1, where G1 is the preset left front wheel load, mu f is the unsprung mass of the front axle, and mt1 is the mass at the left front wheel center. f =mt2, where G2 is the preset right front wheel load, mu f is the unsprung mass of the front axle, and mt2 is the load on the right front wheel center.

[0056] According to the preset left rear wheel load, preset right rear wheel load and preset rear axle unsprung mass of the vehicle suspension, the left rear wheel center end load and the right rear wheel center end load are calculated. For example, according to the preset left rear wheel load and preset rear axle unsprung mass of the vehicle suspension, the left rear wheel center end load is calculated; according to the preset right rear wheel load and preset rear axle unsprung mass of the vehicle suspension, the right rear wheel center end load is calculated. For example, obtain G3-0.5mu r=mt3, where G3 is the preset left rear wheel load, mu r is the unsprung mass of the rear axle, and mt3 is the mass of the left rear wheel center end. r =mt4, where G4 is the preset left rear wheel load, mu r is the unsprung mass of the rear axle, and mt4 is the load on the left rear wheel center.

[0057] According to the left front wheel center end load mass, the right front wheel center end load mass, the preset front wheelbase, and the preset front spring center distance, the left rear suspension spring axle end reaction force and the right rear suspension spring axle end reaction force are calculated respectively; for example, according to the left front wheel center end load mass mt1, the preset front wheelbase T f , Preset front spring center distance B f , generating the first equation -mt1T f +F1'(B f +Δf1)+F2'Δf1=0, where Δf1=0.5(T f -B f ). According to the right front wheel center end load mass mt2, preset front wheel distance T f , Preset front spring center distance B f , generating the second equation mt2T f -F1'Δf1-F2'(B f +Δf1) = 0. Based on the first and second equations, we obtain F1' and F2'. Reversing the directions of F1' and F2' yields the left front suspension spring axle end reaction force F1 and the right front suspension spring axle end reaction force F2.

[0058] According to the left rear wheel center end load mass, the right rear wheel center end load mass, the preset rear wheelbase, and the preset rear spring center distance, the left rear suspension spring axle end reaction force and the right rear suspension spring axle end reaction force are calculated respectively. For example, according to the left rear wheel center end load mass mt3, the preset rear wheelbase T r , Preset spring center distance B r , generate a third-party program -mt3T r +F3'(B r +Δf2)+F4'Δf2=0, where Δf2=0.5(T r -B r ). According to the right rear wheel center end load mass mt4, the rear wheelbase T is preset. r , Preset spring center distance B r , generating the fourth equation mt4T r -F3'Δf2-F4'(B r+Δf2) = 0. Based on the third equation and the fourth equation, we obtain F3' and F4'. Reversing the directions of F3' and F4' yields the left rear suspension spring axle end reaction force F3 and the right rear suspension spring axle end reaction force F4.

[0059] Step S20: Establishing a coordinate system, generating a second equilibrium equation and a third equilibrium equation based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the suspension spring axle end reaction force, and the suspension spring stiffness;

[0060] For example, a coordinate system is established so that the four points at both ends of the automobile suspension spring are always in the same plane. The second equilibrium equation is generated based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the compression of the springs, the reaction force of the suspension spring axle ends, and the stiffness of the suspension springs. The third equilibrium equation is generated based on the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the compression of the springs, the reaction force of the suspension spring axle ends, and the stiffness of the suspension springs.

[0061] Specifically, the establishing of the coordinate system generates a second equilibrium equation and a third equilibrium equation according to the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the compression of the spring, the reaction force of the suspension spring axle end, and the preset suspension spring stiffness, including: establishing a coordinate system, determining the relative position of the sprung mass center of gravity O on the x-axis according to the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis; generating the second equilibrium equation according to the relative position of the sprung mass center of gravity O on the x-axis, the compression of the spring, the reaction force of the suspension spring axle end, and the preset suspension spring stiffness; determining the relative position of the sprung mass center of gravity O on the y-axis according to the moment balance of the four spring axle ends of the left and right suspensions around the y-axis; generating the third equilibrium equation according to the relative position of the sprung mass center of gravity O on the y-axis, the compression of the spring, the reaction force of the suspension spring axle end, and the preset suspension spring stiffness.

[0062] For example, the relative position of the sprung mass center of gravity O on the x-axis is determined based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis. Figure 2As shown, based on the moment balance of the four spring axle ends of the front and rear suspensions about the y-axis, the left front suspension spring axle end reaction force F1, the right front suspension spring axle end reaction force F2, the left rear suspension spring axle end reaction force F3, the right rear suspension spring axle end reaction force F4, and the total suspension spring axle end reaction force F are obtained, where F = F1 + F2 + F3 + F4. Based on the left front suspension spring axle end reaction force F1, the right front suspension spring axle end reaction force F2, the preset wheelbase L, and the total suspension spring axle end reaction force F, the first relative position a of the sprung mass center of gravity O on the x-axis is calculated. For example, the first relative position a of the sprung mass center of gravity O on the x-axis is calculated using the formula a = (F1 + F2) LF. The second relative position of the sprung mass center of gravity O on the x-axis is calculated based on the left rear suspension spring axle-end reaction force F3, the right rear suspension spring axle-end reaction force F4, the preset wheelbase L, and the total suspension spring axle-end reaction force F. For example, the second relative position of the sprung mass center of gravity O on the x-axis is calculated using the formula b = (F3 + F4) LF. The second equilibrium equation (F1-k1a) is generated based on the relative positions a and b of the sprung mass center of gravity O on the x-axis, the spring compression, the suspension spring axle-end reaction force, and the preset suspension spring stiffness. z )a+(F2-k2o z )a+(F3-k3c z )b+(F4-k4b z )b=0, wherein the suspension spring axle-end reaction force includes the left front suspension spring axle-end reaction force F1, the right front suspension spring axle-end reaction force F2, the left rear suspension spring axle-end reaction force F3 and the right rear suspension spring axle-end reaction force F4, the preset suspension spring stiffness includes the left front suspension spring stiffness K1, the right front suspension spring stiffness K2, the left rear suspension spring stiffness K3 and the right rear suspension spring stiffness K4, and the spring compression includes the compression amount a of the left front spring z , compression of the right front spring z , compression of the left rear spring c z and the compression of the right rear spring b z .

[0063] Based on the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the relative position of the sprung mass center of gravity O on the y-axis is determined. Figure 3 As shown, according to the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the left front suspension spring axle end reaction force F1, the right front suspension spring axle end reaction force F2, the left rear suspension spring axle end reaction force F3, the right rear suspension spring axle end reaction force F4 and the total suspension spring axle end reaction force F are obtained; according to the left front suspension spring axle end reaction force F1, the right front suspension spring axle end reaction force F2, the left rear suspension spring axle end reaction force F3, the right rear suspension spring axle end reaction force F4, the total suspension spring axle end reaction force F and the preset spring center distance, the relative position of the sprung mass center of gravity O on the y-axis is calculated as x=0.5[Bf (F2-F1)+B r (F3-F4)]F, where the preset spring center distance includes the front spring center distance B f and rear spring center distance B r Based on the relative position x of the sprung mass center of gravity O on the y-axis, the spring compression, the suspension spring axle end reaction force, the preset spring center distance and the preset suspension spring stiffness, the third equilibrium equation (F2-k2o2)(0.5B f -x)+(F4-k4b2)(0.5B r -x)-(F1-k1a2)(0.5B f +x)-(F3-k3c2)(0.5B r +x)=0, wherein the suspension spring axle-end reaction force includes the left front suspension spring axle-end reaction force F1, the right front suspension spring axle-end reaction force F2, the left rear suspension spring axle-end reaction force F3, and the right rear suspension spring axle-end reaction force F4; the preset suspension spring stiffness includes the left front suspension spring stiffness K1, the right front suspension spring stiffness K2, the left rear suspension spring stiffness K3, and the right rear suspension spring stiffness K4; the spring compression includes the compression amount a of the left front spring z , compression of the right front spring o z , compression of the left rear spring c z and the compression of the right rear spring b z Preset spring center

[0064] Distance including front spring center distance B f and rear spring center distance B r .

[0065] Step S30: calculating the compression amount of the spring according to the preset plane constraint auxiliary equation, the first balance equation, the second balance equation, and the third balance equation;

[0066] For example, obtain the preset plane constraint auxiliary equation

[0067] To facilitate vector calculation, temporarily translate the coordinate system O along the x-axis to the top of the spring on the left side of the front axle. Assuming that the original length of the spring is zero, the deformation of the spring is the z-coordinate value after static equilibrium. The coordinates of the four points OABC after static equilibrium are O(0,0.5Bf,oz), A(0,-0.5Bf,az), B(L,0.5Br,bz), and C(L,-0.5Br,cz). In order to ensure that the four points OABC are in the same plane, the mixed product of the three vectors a, b, and c can be zero. The necessary and sufficient condition for the three vectors a, b, and c to be coplanar is that their mixed product [abc] = 0.

[0068] Auxiliary equations by presetting plane constraints The first equilibrium equation is F1+F2+F3+F4-(k1a z +k2o z +k3c z +k4b z )=0, the second equilibrium equation (F1-k1a z )a+(F2-k2o z )a+(F3-k3c z )b+(F4-k4b z )b=0 and the third equilibrium equation (F2-k2o2)(0.5B f -x)+(F4-k4b2)(0.5B r -x)-(F1-k1a2)(0.5B f +x)-(F3-k3c2)(0.5B r +x)=0, calculate the compression of the spring, the compression of the spring includes the compression of the left front spring a z , compression of the right front spring o z , compression of the left rear spring c z and the compression of the right rear spring b z .

[0069] Step S40: Calculate the difference according to the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width to adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state.

[0070] Exemplarily, the spring compression includes the compression of the left front spring and the compression of the right front spring, and the preset front spring center distance includes the preset front spring center distance; according to the spring compression, the preset spring center distance and the preset vehicle body outer edge width, the difference is calculated to adjust the pad thickness or the leaf spring arc height to make the vehicle body in a balanced state, including: according to the compression of the left front spring a z , compression of the right front spring o z , Preset front spring center distance B f And the preset body outer edge width W, calculate the left and right difference ΔH1 at the front axle, for example, get the formula Calculate the left-right difference ΔH1 at the front axle. Use this difference to adjust the pad thickness or leaf spring arc height to keep the vehicle body in a balanced state.

[0071] The compression amount of the spring, including the compression amount of the left rear spring and the compression amount of the right rear spring, and the preset spring center distance includes the preset rear spring center distance; according to the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width, the difference is calculated to adjust the pad thickness or the leaf spring arc height to make the vehicle body in a balanced state, including: according to the compression amount c of the left rear spring z , compression of the right rear spring b z , Preset spring center distance B r And the preset body outer edge width W, calculate the left and right difference ΔH2 at the rear axle, for example, for example, get the formula Calculate the left-right difference ΔH2 at the rear axle. Use this difference to adjust the pad thickness or leaf spring arc height to keep the vehicle body in a balanced state.

[0072] In this embodiment, a first equilibrium equation is generated based on the compression amount of the spring, the calculated suspension spring axle end reaction force and the preset suspension spring stiffness, wherein the suspension spring axle end reaction force includes the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force and the right rear suspension spring axle end reaction force, the preset suspension spring stiffness includes the left front suspension spring stiffness, the right front suspension spring stiffness, the left rear suspension spring stiffness and the right rear suspension spring stiffness, and the compression amount of the spring includes the compression amount of the left front spring, the compression amount of the right front spring, the compression amount of the left rear spring and the compression amount of the right rear spring; a coordinate system is established, and the moment balance around the y-axis is calculated based on the four spring axle ends of the front and rear suspensions. , the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the compression of the spring, the reaction force of the suspension spring axle end and the suspension spring stiffness are used to generate the second balance equation and the third balance equation; the compression of the spring is calculated according to the preset plane constraint auxiliary equation, the first balance equation, the second balance equation and the third balance equation; according to the compression of the spring, the preset spring center distance and the preset vehicle body outer edge width, the difference is calculated to adjust the pad thickness or the leaf spring arc height to make the vehicle body in a balanced state, which solves the technical problem in the related technology that it is difficult to accurately judge the subtle differences in the vehicle body height and cannot fully adjust the vehicle body to a balanced state, reduces the workload of workers in offline adjustments, and improves production efficiency.

[0073] In a second aspect, an embodiment of the present application also provides a height adjustment device for a leaf spring suspension.

[0074] In one embodiment, referring to Figure 4 , Figure 4 This is a functional module diagram of an embodiment of the height adjustment device for the leaf spring suspension of this application. Figure 4 As shown, the height adjustment device of the leaf spring suspension includes:

[0075] a first generating module 10, configured to generate a first equilibrium equation based on the spring compression, the calculated suspension spring axle-end reaction force, and the preset suspension spring stiffness, wherein the suspension spring axle-end reaction force includes the left front suspension spring axle-end reaction force, the right front suspension spring axle-end reaction force, the left rear suspension spring axle-end reaction force, and the right rear suspension spring axle-end reaction force; the preset suspension spring stiffness includes the left front suspension spring stiffness, the right front suspension spring stiffness, the left rear suspension spring stiffness, and the right rear suspension spring stiffness; and the spring compression includes the compression of the left front spring, the compression of the right front spring, the compression of the left rear spring, and the compression of the right rear spring;

[0076] A second generation module 20 is configured to establish a coordinate system and generate a second equilibrium equation and a third equilibrium equation based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the suspension spring axle end reaction force, and the suspension spring stiffness;

[0077] a calculation module 30, configured to calculate the compression amount of the spring according to the preset plane constraint auxiliary equation, the first balance equation, the second balance equation, and the third balance equation;

[0078] The calculation and adjustment module 40 is used to calculate the difference according to the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width, and adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state.

[0079] Furthermore, in one embodiment, the first generating module 10 is configured to:

[0080] Calculate the left front wheel center end load and the right front wheel center end load based on the preset left front wheel load, preset right front wheel load and preset front axle unsprung mass of the vehicle suspension;

[0081] Calculate the left rear wheel center end load and the right rear wheel center end load based on the preset left rear wheel load, preset right rear wheel load and preset rear axle unsprung mass of the vehicle suspension;

[0082] Calculating the axle-end reaction force of the left front suspension spring and the axle-end reaction force of the right front suspension spring according to the left front wheel center end load mass, the right front wheel center end load mass, the preset front wheelbase, and the preset front spring center distance;

[0083] The left rear suspension spring axle end reaction force and the right rear suspension spring axle end reaction force are calculated respectively according to the left rear wheel center end load mass, the right rear wheel center end load mass, the preset rear wheelbase, and the preset rear spring center distance.

[0084] Furthermore, in one embodiment, the second generating module 20 is configured to:

[0085] Establish a coordinate system and determine the relative position of the sprung mass center of gravity O on the x-axis based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis;

[0086] generating a second equilibrium equation based on the relative position of the sprung mass center of gravity O on the x-axis, the compression of the spring, the axle end reaction force of the suspension spring, and the preset suspension spring stiffness;

[0087] Determine the relative position of the sprung mass center of gravity O on the y-axis based on the moment balance of the four spring axle ends of the left and right suspensions about the y-axis;

[0088] A third equilibrium equation is generated based on the relative position of the sprung mass center of gravity O on the y-axis, the compression of the spring, the suspension spring axle end reaction force, the preset spring center distance, and the preset suspension spring stiffness.

[0089] Furthermore, in one embodiment, the height adjustment device of the leaf spring suspension further includes a new module for:

[0090] According to the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force and the total suspension spring axle end reaction force are obtained;

[0091] Calculating a first relative position of the sprung mass center of gravity O on the x-axis based on the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, a preset wheelbase, and the total suspension spring axle end reaction force;

[0092] A second relative position of the sprung mass center of gravity O on the x-axis is calculated based on the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force, the preset wheelbase, and the total suspension spring axle end reaction force.

[0093] Furthermore, in one embodiment, the height adjustment device of the leaf spring suspension further includes a new module for:

[0094] According to the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring axle end reaction force of the left front suspension, the spring axle end reaction force of the right front suspension, the spring axle end reaction force of the left rear suspension, the spring axle end reaction force of the right rear suspension, and the total spring axle end reaction force of the suspension are obtained;

[0095] The relative position of the sprung mass center of gravity O on the y-axis is calculated based on the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force, the total suspension spring axle end reaction force, and the preset spring center distance.

[0096] Furthermore, in one embodiment, the calculation and adjustment module 40 is configured to:

[0097] Calculating the left-right difference at the front axle based on the compression amount of the left front spring, the compression amount of the right front spring, the preset front spring center distance, and the preset vehicle body outer edge width;

[0098] The pad thickness or the leaf spring arc height is adjusted by the left and right difference at the front axle to keep the vehicle body in a balanced state.

[0099] Furthermore, in one embodiment, the calculation and adjustment module 40 is configured to:

[0100] Calculating the left-right difference at the rear axle based on the compression amount of the left rear spring, the compression amount of the right rear spring, the preset rear spring center distance, and the preset vehicle body outer edge width;

[0101] The pad thickness or the leaf spring arc height is adjusted by the left and right difference at the rear axle to keep the vehicle body in a balanced state.

[0102] Among them, the functional implementation of each module in the above-mentioned height adjustment device of the leaf spring suspension corresponds to the various steps in the embodiment of the above-mentioned height adjustment method of the leaf spring suspension, and their functions and implementation processes are no longer repeated here.

[0103] In a third aspect, an embodiment of the present application provides a height adjustment device for a leaf spring suspension. The height adjustment device for a leaf spring suspension may be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0104] Reference Figure 5 , Figure 5 Schematic diagram of the hardware structure of the height adjustment device for the leaf spring suspension involved in the embodiment of the present application. In the embodiment of the present application, the height adjustment device for the leaf spring suspension may include a processor, a memory, a communication interface, and a communication bus.

[0105] The communication bus may be of any type and is used to interconnect the processor, memory, and communication interface.

[0106] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces, used to interconnect components within the leaf spring suspension height adjustment device, as well as interfaces used to interconnect the leaf spring suspension height adjustment device with other devices (e.g., other computing devices or user devices). Physical interfaces can include Ethernet, fiber optic, and ATM interfaces; user devices can include displays and keyboards.

[0107] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0108] The processor may be a general-purpose processor that can call a leaf spring suspension height adjustment program stored in a memory and execute the leaf spring suspension height adjustment method provided in the embodiments of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the leaf spring suspension height adjustment program is called can be referenced to the various embodiments of the leaf spring suspension height adjustment method of the present application and will not be further described here.

[0109] Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation to the present application and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0110] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0111] The computer-readable storage medium of the present application stores a height adjustment program for a leaf spring suspension, wherein when the height adjustment program for a leaf spring suspension is executed by a processor, the steps of the height adjustment method for a leaf spring suspension as described above are implemented.

[0112] Among them, the method implemented when the height adjustment program of the leaf spring suspension is executed can refer to the various embodiments of the height adjustment method of the leaf spring suspension of the present application, and will not be repeated here.

[0113] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0114] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit the "first", "second" and "third" to different types.

[0115] In the description of the embodiments of this application, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0116] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0117] In some processes described in the embodiments of the present application, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed in sequence or in parallel, and these operations or steps may be combined.

[0118] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of the present application.

[0119] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for adjusting the height of a leaf spring suspension, characterized in that: The height adjustment method of the leaf spring suspension comprises: generating a first equilibrium equation based on the spring compression, the calculated suspension spring axle-end reaction force, and the preset suspension spring stiffness, wherein the suspension spring axle-end reaction force includes the left front suspension spring axle-end reaction force, the right front suspension spring axle-end reaction force, the left rear suspension spring axle-end reaction force, and the right rear suspension spring axle-end reaction force; the preset suspension spring stiffness includes the left front suspension spring stiffness, the right front suspension spring stiffness, the left rear suspension spring stiffness, and the right rear suspension spring stiffness; and the spring compression includes the compression of the left front spring, the right front spring, the left rear spring, and the right rear spring; Establish a coordinate system and generate the second and third equilibrium equations based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the reaction force of the suspension spring axle end, and the suspension spring stiffness; The coordinate system is established to generate the second and third equilibrium equations based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the suspension spring axle end reaction force, and the preset suspension spring stiffness, including: Establish a coordinate system and determine the relative position of the sprung mass center of gravity O on the x-axis based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis; generating a second equilibrium equation based on the relative position of the sprung mass center of gravity O on the x-axis, the compression of the spring, the axle end reaction force of the suspension spring, and the preset suspension spring stiffness; Determine the relative position of the sprung mass center of gravity O on the y-axis based on the moment balance of the four spring axle ends of the left and right suspensions about the y-axis; generating a third equilibrium equation based on the relative position of the sprung mass center of gravity O on the y-axis, the compression of the spring, the axle end reaction force of the suspension spring, the preset spring center distance, and the preset suspension spring stiffness; Calculating the compression amount of the spring according to the preset plane constraint auxiliary equation, the first equilibrium equation, the second equilibrium equation, and the third equilibrium equation; According to the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width, the difference is calculated to adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state.

2. The method for adjusting the height of a leaf spring suspension according to claim 1, wherein: The suspension spring axle end reaction force includes the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force, and the right rear suspension spring axle end reaction force; the calculated suspension spring axle end reaction force includes: Calculate the left front wheel center end load and the right front wheel center end load based on the preset left front wheel load, preset right front wheel load and preset front axle unsprung mass of the vehicle suspension; Calculate the left rear wheel center end load and the right rear wheel center end load based on the preset left rear wheel load, preset right rear wheel load and preset rear axle unsprung mass of the vehicle suspension; Calculating the axle-end reaction force of the left front suspension spring and the axle-end reaction force of the right front suspension spring according to the left front wheel center end load mass, the right front wheel center end load mass, the preset front wheelbase, and the preset front spring center distance; The left rear suspension spring axle end reaction force and the right rear suspension spring axle end reaction force are calculated respectively according to the left rear wheel center end load mass, the right rear wheel center end load mass, the preset rear wheelbase, and the preset rear spring center distance.

3. The method for adjusting the height of a leaf spring suspension according to claim 1, wherein: Determining the relative position of the sprung mass center of gravity O on the x-axis based on the moment balance of the four spring axle ends of the front and rear suspensions about the y-axis includes: According to the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force and the total suspension spring axle end reaction force are obtained; Calculating a first relative position of the sprung mass center of gravity O on the x-axis based on the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, a preset wheelbase, and the total suspension spring axle end reaction force; A second relative position of the sprung mass center of gravity O on the x-axis is calculated based on the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force, the preset wheelbase, and the total suspension spring axle end reaction force.

4. The method for adjusting the height of a leaf spring suspension according to claim 1, wherein: Determining the relative position of the sprung mass center of gravity O on the y-axis based on the moment balance of the four spring axle ends of the left and right suspensions about the y-axis includes: According to the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring axle end reaction force of the left front suspension, the spring axle end reaction force of the right front suspension, the spring axle end reaction force of the left rear suspension, the spring axle end reaction force of the right rear suspension, and the total spring axle end reaction force of the suspension are obtained; The relative position of the sprung mass center of gravity O on the y-axis is calculated based on the left front suspension spring axle end reaction force, the right front suspension spring axle end reaction force, the left rear suspension spring axle end reaction force, the right rear suspension spring axle end reaction force, the total suspension spring axle end reaction force, and the preset spring center distance.

5. The method for adjusting the height of a leaf spring suspension according to claim 1, wherein: The compression amount of the spring includes the compression amount of the left front spring and the compression amount of the right front spring, and the preset spring center distance includes the preset front spring center distance; the difference calculated based on the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width is used to adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state, including: Calculating the left-right difference at the front axle based on the compression amount of the left front spring, the compression amount of the right front spring, the preset front spring center distance, and the preset vehicle body outer edge width; The pad thickness or the leaf spring arc height is adjusted by the left and right difference at the front axle to keep the vehicle body in a balanced state.

6. The method for adjusting the height of a leaf spring suspension according to claim 1, wherein: The compression amount of the spring includes the compression amount of the left rear spring and the compression amount of the right rear spring, and the preset spring center distance includes the preset rear spring center distance; the difference calculated based on the spring compression amount, the preset spring center distance and the preset vehicle body outer edge width is used to adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state, including: Calculating the left-right difference at the rear axle based on the compression amount of the left rear spring, the compression amount of the right rear spring, the preset rear spring center distance, and the preset vehicle body outer edge width; The pad thickness or the leaf spring arc height is adjusted by the left and right difference at the rear axle to keep the vehicle body in a balanced state.

7. A height adjustment device for a leaf spring suspension, characterized in that: The height adjustment device of the leaf spring suspension comprises: a first generating module, configured to generate a first equilibrium equation based on a spring compression amount, a calculated suspension spring axle-end reaction force, and a preset suspension spring stiffness, wherein the suspension spring axle-end reaction force includes a left front suspension spring axle-end reaction force, a right front suspension spring axle-end reaction force, a left rear suspension spring axle-end reaction force, and a right rear suspension spring axle-end reaction force; the preset suspension spring stiffness includes a left front suspension spring stiffness, a right front suspension spring stiffness, a left rear suspension spring stiffness, and a right rear suspension spring stiffness; and the spring compression amount includes a left front spring compression amount, a right front spring compression amount, a left rear spring compression amount, and a right rear spring compression amount; The second generation module is used to establish a coordinate system and generate the second and third equilibrium equations based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the suspension spring axle end reaction force, and the suspension spring stiffness; The coordinate system is established to generate the second and third equilibrium equations based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis, the moment balance of the four spring axle ends of the left and right suspensions around the y-axis, the spring compression, the suspension spring axle end reaction force, and the preset suspension spring stiffness, including: Establish a coordinate system and determine the relative position of the sprung mass center of gravity O on the x-axis based on the moment balance of the four spring axle ends of the front and rear suspensions around the y-axis; generating a second equilibrium equation based on the relative position of the sprung mass center of gravity O on the x-axis, the compression of the spring, the axle end reaction force of the suspension spring, and the preset suspension spring stiffness; Determine the relative position of the sprung mass center of gravity O on the y-axis based on the moment balance of the four spring axle ends of the left and right suspensions about the y-axis; generating a third equilibrium equation based on the relative position of the sprung mass center of gravity O on the y-axis, the compression of the spring, the axle end reaction force of the suspension spring, the preset spring center distance, and the preset suspension spring stiffness; a calculation module, configured to calculate the compression amount of the spring based on a preset plane constraint auxiliary equation, the first balance equation, the second balance equation, and the third balance equation; The calculation and adjustment module is used to calculate the difference according to the compression amount of the spring, the preset spring center distance and the preset vehicle body outer edge width, and adjust the pad thickness or the leaf spring arc height to keep the vehicle body in a balanced state.

8. A height adjustment device for a leaf spring suspension, characterized in that: The height adjustment device of the leaf spring suspension includes a processor, a memory, and a height adjustment program of the leaf spring suspension stored in the memory and executable by the processor, wherein when the height adjustment program of the leaf spring suspension is executed by the processor, the steps of the height adjustment method of the leaf spring suspension according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a leaf spring suspension height adjustment program, wherein when the leaf spring suspension height adjustment program is executed by a processor, the steps of the leaf spring suspension height adjustment method according to any one of claims 1 to 6 are implemented.

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