阅读说明：本技术 一种串联螺旋弹簧式阶梯储能机构及其使用方法 (Series helical spring type step energy storage mechanism and use method thereof ) 是由 崔峰 于 2020-08-18 设计创作，主要内容包括：本发明公开了一种串联螺旋弹簧式阶梯储能机构,第一安装组件、中间调节组件均安装于筒身上,第一安装组件设置于伸缩部远离筒身的一侧,第一螺旋弹簧套设于筒身上,并且第一螺旋弹簧位于第一安装组件与中间调节组件之间,第二螺旋弹簧套设于伸缩部上,并且第二螺旋弹簧位于中间调节组件与第二安装组件之间,第一螺旋弹簧的最大载荷与第二螺旋弹簧的最大载荷不同,中间调节组件能够限制第一螺旋弹簧和第二螺旋弹簧中最大载荷小的一个向中间调节组件方向移动,第一螺旋弹簧和第二螺旋弹簧中最大载荷大的一个能够推动中间调节组件移动让第一螺旋弹簧和第二螺旋弹簧中最大载荷小的一个压缩。本申请能够实现储能机构的弹性刚度呈阶梯性变化。(The invention discloses a series helical spring type step energy storage mechanism, wherein a first mounting component and a middle adjusting component are both mounted on a cylinder body, the first mounting component is arranged on one side of a telescopic part far away from the cylinder body, a first helical spring is sleeved on the cylinder body, and the first helical spring is positioned between the first mounting component and the middle adjusting component, the second helical spring is sleeved on the telescopic part, and the second spiral spring is positioned between the middle adjusting assembly and the second mounting assembly, the maximum load of the first spiral spring is different from that of the second spiral spring, the middle adjusting assembly can limit the movement of the smaller maximum load of the first spiral spring and the second spiral spring to the direction of the middle adjusting assembly, and the larger maximum load of the first spiral spring and the second spiral spring can push the middle adjusting assembly to move so as to compress the smaller maximum load of the first spiral spring and the second spiral spring. This application can realize that energy storage mechanism's elastic rigidity is the ladder nature change.)

1. A series coil spring type step energy storage mechanism comprises a barrel body (1) and a telescopic part (2), wherein one end of the telescopic part (2) is inserted into the barrel body (1), the telescopic part (2) can stretch along the axis of the barrel body (1), the series coil spring type step energy storage mechanism is characterized by further comprising a first coil spring (3), a second coil spring (4), a first mounting assembly (21), a second mounting assembly (22) and a middle adjusting assembly, wherein the first mounting assembly (21) and the middle adjusting assembly are both mounted on the barrel body (1), the first mounting assembly is arranged on one side, away from the barrel body (1), of the telescopic part (2), the middle adjusting assembly is positioned between the first mounting assembly (21) and the second mounting assembly (22), the first coil spring (3) is sleeved on the barrel body (1), and the first helical spring (3) is positioned between the first mounting component (21) and the middle adjusting component, the second helical spring (4) is sleeved on the telescopic part (2), and the second helical spring (4) is located between the intermediate adjustment assembly and the second mounting assembly (22), the maximum load of the first coil spring (3) is different from the maximum load of the second coil spring (4), the middle adjusting component can limit the movement of the one with the smaller maximum load of the first spiral spring (3) and the second spiral spring (4) to the direction of the middle adjusting component, the one of the first spiral spring (3) and the second spiral spring (4) with the larger maximum load can push the middle adjusting assembly to move so that the one of the first spiral spring (3) and the second spiral spring (4) with the smaller maximum load is compressed.

2. The series helical spring type step energy storage mechanism is characterized in that a first threaded hole (5) is formed in the middle of the first mounting component (21), threads matched with the first threaded hole (5) are formed in the barrel body (1), the first mounting component (21) is mounted on the barrel body (1) through threaded matching, a second threaded hole (6) is formed in the middle of the second mounting component (22), threads matched with the second threaded hole (6) are formed in one end, away from the barrel body (1), of the telescopic portion (2), and the second mounting component (22) is mounted on one side, away from the barrel body (1), of the telescopic portion (2) through threaded matching.

3. The series coil spring type stepped energy storage mechanism according to claim 1, wherein the intermediate adjusting assembly comprises a third mounting seat assembly (23) and a fourth mounting seat assembly (24), a third threaded hole (7) is formed in the third mounting seat assembly (23) in a penetrating mode, a thread is formed in the barrel body (1), the third mounting seat assembly (23) is installed on the barrel body (1) through the third threaded hole (7) in a matching mode, the fourth mounting seat assembly (24) is sleeved on the barrel body (1), and the fourth mounting seat assembly (24) is located on the side close to the third mounting seat assembly (23) with the small maximum load in the first coil spring (3) and the second coil spring (4).

4. A series coil spring type stepped energy storage mechanism according to claim 3, wherein the third mounting seat assembly (23) comprises a first mounting table (8), one end of the first mounting table (8) close to the first coil spring (3) and the second coil spring (4) with the lowest maximum load is provided with a second mounting table (9), the end surface of the first mounting table (8) is larger than the end surface of the second mounting table (9), the third threaded hole (7) penetrates through the first mounting table (8) and the second mounting table (9), the fourth mounting seat assembly (24) is sleeved on the second mounting table (9), and the fourth mounting seat assembly (24) can move along the axis of the second mounting table (9).

5. The series coil spring type step energy storage mechanism as claimed in claim 3 or 4, wherein the fourth mounting seat assembly (24) is a limiting table I (10), a through hole (11) is formed in the middle of the limiting table I (10), the limiting table I (10) is sleeved on the outer wall of the barrel body (1) through the through hole (11), and the first coil spring (3) and the second coil spring (4) act on two sides of the limiting table I (10) respectively.

6. The series coil spring type step energy storage mechanism is characterized in that a limiting table II (12) is arranged at one end, close to the first coil spring (3) and the second coil spring (4), of the limiting table I (10) with the small maximum load, the limiting table II (12) is of a circular ring-shaped structure, and one of the first coil spring (3) and the second coil spring (4) with the small maximum load is sleeved on the limiting table II (12).

7. The series coil spring type stepped energy storage mechanism according to claim 4, wherein the fourth mounting seat assembly (24) is a telescopic assembly (25), a limiting table V (26) is arranged at the end part of the telescopic assembly (25) far away from the third mounting seat assembly (23), the telescopic assembly (25) is sleeved outside the second mounting table (9), and the telescopic assembly (25) can be stretched along the axis of the second mounting table (9).

8. The series coil spring type step energy storage mechanism is characterized in that the first mounting assembly (21) comprises a first mounting seat (14) and a telescopic assembly (25), a limiting platform III (15) is arranged at one end, close to the first coil spring (3), of the first mounting seat (14), the first threaded hole (5) penetrates through the first mounting seat (14) and the limiting platform III (15), the telescopic assembly (25) is sleeved on the outer wall of the limiting platform III (15), a limiting platform VI (27) is arranged at one end, far away from the first mounting seat (14), of the telescopic assembly (25), the telescopic assembly (25) can stretch in the axial direction of the limiting platform III (15), the second mounting assembly (22) comprises a second mounting seat (16) and a telescopic assembly (25), a limiting platform IV (17) is arranged at one end, close to the second coil spring (4), of the second mounting seat (16), the second threaded hole (6) penetrates through the second mounting seat (16) and the limiting table IV (17), the telescopic assembly (25) is sleeved on the outer wall of the limiting table IV (17), one end, far away from the second mounting seat (16), of the telescopic assembly (25) is provided with a limiting table VII (28), and the telescopic assembly (25) can stretch along the axis direction of the limiting table IV (17).

9. A series coil spring type stepped energy storage mechanism as claimed in any one of claims 7 and 8, characterized in that the telescopic assembly (25) comprises a first mounting plate (18), a second mounting plate (19), an air bag assembly (20) arranged between the first mounting plate (18) and the second mounting plate (19), the middle parts of the first mounting plate (18), the second mounting plate (19) and the air bag component (20) are all provided with second through holes (13), and the second through hole (13) penetrates through the first mounting plate (18), the second mounting plate (19) and the airbag module (20), first mounting panel (18), second mounting panel (19) and gasbag subassembly (20) all pass through second through-hole (13) cover is located on stack shell (1), its height can be adjusted through aerifing and gassing to gasbag subassembly (20).

10. The use method of the series coil spring type step energy storage mechanism is characterized by comprising the following steps of:

1) -selecting the first helical spring (3) and the second helical spring (4) according to the vehicle parameters, and letting the maximum preload of the first helical spring (3) be less than the maximum preload of the second helical spring (4):

2) sleeving a first spiral spring (3) on a barrel body (1), sleeving a second spiral spring (4) on a telescopic part (2), arranging a middle adjusting component between the first spiral spring (3) and the second spiral spring (4), installing the middle adjusting component between the first spiral spring (3) and the second spiral spring (4) and connecting the middle adjusting component with the barrel body (1), installing a first seat component (21) at one end of the first spiral spring (3) far away from the middle adjusting component and connecting the first seat component with the barrel body (1), installing a second installation component (22) at one end of the second spiral spring (4) far away from the middle adjusting component and connecting the second installation component with the telescopic part (2);

3) the end part of the cylinder body (1) is hinged with the body of an automobile, and the end part of the telescopic part (2) is hinged with an automobile suspension component;

4) adjusting the initial preload F of the first helical spring (3) by means of the cooperation of the first mounting assembly (21) with the intermediate adjustment assembly₁₀，F₁₀Greater than 0; adjusting an initial preload F of the second helical spring (4) by means of the second mounting assembly (22)₂₀Said F₂₀Greater than 0 and allowing an initial preload F of the first helical spring (3)₁₀Greater than the initial preload F of the second helical spring (4)₂₀；

5) When in useWhen the automobile is in running, the suspension system of the automobile is stressed, and the stress F is less than F₁₀Due to the initial preload F of the first coil spring (3)₁₀Greater than the initial preload F of the second helical spring (4)₂₀Only the second helical spring (4) is compressed at this time;

6) when the stress of a suspension system of the automobile is continuously increased and the stress of the suspension system is smaller than the maximum preload of the first spiral spring (3), at the moment, the middle adjusting assembly can move towards the direction of the first spiral spring (3) along the cylinder body, so that the first spiral spring (3) and the second spiral spring (4) are in a series connection state, and the first spiral spring (3) and the second spiral spring (4) are compressed at the moment;

7) when the stress of the suspension system of the automobile is increased again and the stress of the suspension system is larger than the maximum preload of the first spiral spring (3), the first spiral spring (3) can be compressed to the maximum compression stroke, the first spiral spring (3) fails, and only the second spiral spring (4) participates in work and can be compressed.

Technical Field

The invention relates to the technical field of spring energy storage, in particular to a series helical spring type step energy storage mechanism.

Background

With the improvement of living standard of people, driving vehicles becomes the preferred travel mode of people at present. For passenger vehicles, higher riding comfort is often demanded, and the riding comfort of the vehicle is largely determined by the rigidity of the elastic elements of the chassis. The spring elements of current passenger vehicles are primarily helical springs, the stiffness of which is generally linear, i.e. constant. The constant stiffness spring often cannot meet the requirements of a vehicle chassis suspension system on ground clearance, suspension travel, static deflection and the like at the same time, and further cannot meet the requirements of a vehicle on riding comfort and operation stability. Most working conditions of the vehicle running are above and below the balance position, so that the rigidity above and below the balance position is slightly smaller, and the vehicle has a positive effect on the riding comfort of the vehicle. Meanwhile, according to statistical research, the position probability of the automobile suspension system during working basically meets the normal distribution of the upper and lower balanced positions of the automobile suspension system. The probability that the vehicle is in the middle 1/3 journey in its journey range is therefore as high as 70%, in which interval the vehicle is travelling in good road conditions. Therefore, in this section, a moderate reduction in the rigidity of the suspension will have a positive effect on the ride comfort of the vehicle.

The existing spring energy storage mechanism for automobile suspension adopts a single spiral spring structure, and because the rigidity of the spiral spring is linear and constant, the constant-rigidity spring can not simultaneously meet the requirements of a vehicle on ground clearance, suspension travel, static deflection and the like in a chassis suspension system under different use working conditions, and further can not meet the requirements of the vehicle on riding comfort and operation stability.

Disclosure of Invention

The existing spring energy storage mechanism for automobile suspension, which is provided by the invention, adopts a single spiral spring structure, and the rigidity of the spiral spring is linear and constant, so that the constant-rigidity spring can not simultaneously meet the requirements of a vehicle on ground clearance, suspension travel, static deflection and the like in a chassis suspension system under different use working conditions, and further can not meet the requirements of the vehicle on riding comfort and operation stability.

The invention is realized by the following technical scheme:

a series coil spring type step energy storage mechanism comprises a barrel body and a telescopic part, wherein one end of the telescopic part is inserted into the barrel body, the telescopic part can stretch along the axis of the barrel body, the series coil spring type step energy storage mechanism also comprises a first coil spring, a second coil spring, a first mounting assembly, a second mounting assembly and a middle adjusting assembly, the first mounting assembly and the middle adjusting assembly are both mounted on the barrel body, the first mounting assembly is arranged on one side of the telescopic part, which is far away from the barrel body, the middle adjusting assembly is arranged between the first mounting assembly and the second mounting assembly, the first coil spring is sleeved on the barrel body, the first coil spring is arranged between the first mounting assembly and the middle adjusting assembly, the second coil spring is sleeved on the telescopic part, and the second coil spring is arranged between the middle adjusting assembly and the second mounting assembly, the maximum load of the first helical spring is different from the maximum load of the second helical spring, the intermediate adjusting assembly can limit the movement of the smaller maximum load of the first helical spring and the second helical spring to the direction of the intermediate adjusting assembly, and the larger maximum load of the first helical spring and the second helical spring can push the intermediate adjusting assembly to move to compress the smaller maximum load of the first helical spring and the second helical spring.

The existing spring energy storage mechanism for automobile suspension adopts a single spiral spring structure, and because the rigidity of the spiral spring is linear and constant, the constant-rigidity spring can not simultaneously meet the requirements of a vehicle on ground clearance, suspension travel, static deflection and the like in a chassis suspension system under different use working conditions, and further can not meet the requirements of the vehicle on riding comfort and operation stability. The first spiral spring and the second spiral spring are arranged on the existing suspended damper, so that the spiral spring is maximally compressedThe load experienced during the amount of travel or the load at which the spring coils fail is defined as the maximum load. Let the maximum load of the first coil spring be F₁Let the maximum load of the second coil spring be F₂The utility model discloses a damper, establish first coil spring and second coil spring respectively on stack shell and the pars contractilis of damper, and set up first dress subassembly and second installation subassembly on damper both ends stack shell and pars contractilis respectively, set up middle adjusting part between first coil spring and second coil spring, first installation subassembly is used as a stress point of first coil spring, and let the outside removal that first installation subassembly can follow the stack shell, be used for adjusting the distance of first coil spring apart from the stack shell tip, realize adjusting first coil spring's initial preloading. The middle adjusting component is arranged between the first spiral spring and the second spiral spring and is connected with the barrel body, one side of the middle adjusting component is used as the other force bearing point of the first spiral spring, and the other side of the middle adjusting component is used as one force bearing point of the second spiral spring to connect the first spiral spring and the second spiral spring. The second installation component is installed at the end part of the telescopic part and used as a stress point at the other end of the second spiral spring, and the second installation component can move along the outer side of the cylinder body and is used for adjusting the distance between the second spiral spring and the end part of the telescopic part and realizing the initial preloading of the second spiral spring. First installation component and second installation component can adopt the screw thread mounting mode to install respectively on stack shell or pars contractilis, also can adopt the installation that other existing methods can be adjusted on stack shell or pars contractilis, realize the initial preloaded regulation of first coil spring and second coil spring.

The middle adjusting component can be composed of a limiting ring arranged on the barrel body and a sliding table sleeved on the barrel body, the sliding table is arranged on one side, close to the first spiral spring or the second spiral spring with relatively smaller maximum load, of the limiting ring, the diameter of one inner ring in the first spiral spring or the second spiral spring with larger maximum load is larger than that of the limiting ring, the end part can act on one side of the sliding table, and the other end part in the first spiral spring or the second spiral spring acts on the other side of the sliding table, so that the middle adjusting component can limit the first spiral spring and the second spiral spring to be in a limiting modeThe lower of the maximum loads of the springs is moved in a direction in which the maximum load of the first and second coil springs is greater, and the higher of the maximum loads of the first and second coil springs urges the intermediate adjusting assembly to move to compress the lower of the maximum loads of the first and second coil springs. The maximum load of the first and second coil springs is defined to be different, F₁≠F₂Therefore, the spring with large maximum load can be enabled to be failed in a parallel ring mode by the spring with small maximum load in the spring compression process, and the elastic force of the spring shows step change by changing the connection relation of the spring.

In use, if the initial loads of the first and second coil springs are the same, the total stiffness of the spring system is denoted as K, the stiffness of the first coil spring is denoted as K1, and the stiffness of the second coil spring is denoted as K₂When the first coil spring and the second coil spring are initially in series in the initial state as the load applied to the constituent spring system increases, thenWith the increase of the applied load, the spring with smaller maximum preload in the first spiral spring and the second spiral spring can be compressed by the applied increasing force to achieve the maximum compression stroke to realize the coil combining because of the capability difference of the spring to bear the load, the spring with smaller maximum load in the first spiral spring and the second spiral spring after the coil combining effectively exists as a rigid body, only the spring with larger maximum load in the first spiral spring and the second spiral spring works at the moment, and if the maximum load of the first spiral spring is larger than that of the second spiral spring, K is K₁And if the maximum load of the first coil spring is smaller than that of the second coil spring, K is K₂The total elastic rigidity of the system is changed in a two-stage step mode. As shown in fig. 11, when the load applied to the spring system is denoted by Fn and the spring compression amount of the spring system is denoted by X, the slope is the total stiffness of the system spring.

When in use, the first spiral spring and the second spiral spring are connected by the first mounting assembly or the second mounting assemblyThe initial preload of the spring is adjusted to be different, and the initial preload difference F of the first coil spring is recorded₁₀Recording the initial preload F of the second coil spring₂₀And let one of the first and second coil springs having the smaller maximum load initially preload be larger than the other, the total stiffness of the spring system is denoted as K, and the stiffness of the first coil spring is denoted as K₁The stiffness of the second helical spring is denoted K₂And, as the load applied to the constituent spring system increases, the load applied at the beginning is smaller than the initial preload of the one of the first coil spring and the second coil spring whose maximum load is smaller, and only the one of the first coil spring and the second coil spring whose maximum load is larger operates, and if the maximum load of the first coil spring is larger than that of the second coil spring, K is K₁And if the maximum load of the first coil spring is smaller than that of the second coil spring, K is K₂When F increases with increasing applied load_n＞F₀When the first coil spring and the second coil spring are in series connection, the first coil spring and the second coil spring are in series connection

The maximum load of the spring having the smaller maximum preload of the first coil spring and the second coil spring as the applied load increases is denoted as F_maxWhen F is_n>F_maxDuring the process, one spring with smaller maximum preload in the first spiral spring and the second spiral spring can be compressed by applying increased force due to the fact that the spring can bear load capacity difference to achieve maximum compression stroke to achieve coil combining, the spring effect that the maximum load in the first spiral spring and the second spiral spring is small after coil combining exists as a rigid body, only one spring with large maximum load in the first spiral spring and the second spiral spring works at the moment, and if the maximum load of the first spiral spring is larger than that of the second spiral spring, K is K₁And if the maximum load of the first coil spring is smaller than that of the second coil spring, K is K₂And the total elastic rigidity of the system is changed in a three-stage step mode. As shown in FIG. 12, when the spring compression of the spring system is X, the slope is that of the system springThe overall stiffness. The rigidity of the first spiral spring and the rigidity of the second spiral spring are reasonably selected by matching with automobile parameters and rigidity curves, and the total rigidity can be changed in a reasonable step state when the automobile is used, so that the rigidity characteristic of the automobile can show the effect of step change. The invention is applied to the vehicle suspension, so that the energy storage effect of the vehicle is better when the shock absorber moves in a small stroke under most conventional working conditions, and better comfort is realized. Meanwhile, under the violent working condition of vehicle running, the shock absorber moves in a large stroke, and the spring system has the characteristic of high rigidity. The support of the vehicle chassis can be ensured during the compression stroke, and the large stroke is prevented from touching the stroke limit of the shock absorber; the shock absorber can rebound quickly during rebound stroke, and the grounding performance of the tire is improved. In conclusion, the invention is applied to the vehicle chassis suspension, and can improve the comfort and the operation stability performance of the vehicle.

Further, first installation component middle part is provided with first screw hole, be provided with on the barrel with first screw hole complex screw thread, first installation component through screw-thread fit install in on the barrel, second installation component middle part is provided with the second screw hole, the one end that the barrel was kept away from to the pars contractilis is be provided with second screw hole complex screw thread, the second installation component through screw-thread fit install in one side that the barrel was kept away from to the pars contractilis. The second installation component can also be an installation block of an annular structure, a second threaded hole is formed in the middle of the installation block, the installation block is installed on the telescopic portion of the barrel through threads, and the initial preloading adjustment of the second spiral spring can be achieved by rotating the second installation component. The first installation component and the second installation component of preferred disk shape, edge set up the circumference and evenly be provided with a plurality of pits, the first installation component of convenient to use instrument rotation and second installation component.

Furthermore, the middle adjusting assembly comprises a third mounting seat assembly and a fourth mounting seat assembly, a third threaded hole which penetrates through the third mounting seat assembly is formed in the third mounting seat assembly, threads are formed in the barrel body, the third mounting seat assembly is installed on the barrel body through the third threaded hole in a matched mode, the fourth mounting seat assembly is sleeved on the barrel body, and the fourth mounting seat assembly is located on one side, close to the first spiral spring and the second spiral spring, of the third mounting seat assembly with the small maximum load. Through setting up middle adjusting part into third mount pad subassembly and fourth installation component, the third mount pad subassembly can restrict among first coil spring and the second coil spring that the maximum load is little one spring and move to the big direction of maximum load, and the third mount pad subassembly passes through the screw thread and installs on the barrel body simultaneously, can adjust first coil spring with the little initial preload of maximum load among the second coil spring, the performance debugging in the later stage of being convenient for and the debugging when matching different motorcycle types and installing for the debugging is more easy to assemble simpler.

Further, the third mounting seat assembly comprises a first mounting table, a second mounting table is arranged at one end, close to the first spiral spring and the second spiral spring, of the first mounting table, and the end face of the first mounting table is larger than that of the second mounting table, the third threaded hole penetrates through the first mounting table and the second mounting table, the fourth mounting seat assembly is sleeved on the second mounting table, and the fourth mounting seat assembly can move along the axis of the second mounting table. Through setting up the second mount table, the fourth mount pad subassembly can advance to remove at the outer wall of second mount table, has avoided the fourth mount pad subassembly to scrape the screw thread on the stack shell when moving along the stack shell flower and wearing and tearing, influences the regulation of third mount pad.

Further, fourth mount pad subassembly is spacing platform I, the centre of spacing platform I is provided with the through-hole, spacing platform I is located through the through-hole cover the outer wall of stack shell, first coil spring with second coil spring acts on respectively the both sides of spacing platform I. Set up fourth mount pad subassembly into I simple structure of spacing platform, can let two springs do not act on in I both sides of spacing platform simultaneously, simple to operate is with low costs.

Furthermore, the limiting table I is close to one end, with a small maximum load, of the first spiral spring and the second spiral spring and is provided with a limiting table II, the limiting table II is annular, and the first spiral spring and the second spiral spring are sleeved with the limiting table II, with a small maximum load. Set up spacing platform II through the one end that maximum load is little in spacing platform I is close to first coil spring and second coil spring, spacing platform II moves along with spacing platform I along the stack shell, because spacing platform II has a take the altitude, move one section distance can with support on the first installation component or the second installation component of tip, thereby it reaches the maximum compression stroke to have restricted in first coil spring and the second coil spring one of the biggest load, and be unlikely to compressed to the ring always, can improve the life of spring, avoid the spring to damage.

Preferably, the fourth mounting base assembly is a telescopic assembly, a limiting table V is arranged at the end part, far away from the third mounting base assembly, of the telescopic assembly, the telescopic assembly is sleeved on the second mounting table, and the telescopic assembly can stretch along the axis of the second mounting table. Through setting up the fourth installation component into flexible subassembly, flexible subassembly can be pneumatic also can be electronic, and flexible subassembly can be when the use convenient to use person just conveniently adjusts the spring preloading, realizes the change of spring system rigidity, and it is more convenient to let the use. Through setting up spacing platform V, be convenient for realize spacing the spring maximum compression volume, avoid the spring to damage.

Preferably, the first mounting assembly comprises a first mounting seat and a telescopic assembly, the first mounting seat is close to one end of the first spiral spring and is provided with a limit platform III, the first threaded hole penetrates through the first mounting seat and the limit platform III, the telescopic assembly is sleeved on the outer wall of the limit platform III, the telescopic assembly is far away from one end of the first mounting seat and is provided with a limit platform VI, and the telescopic assembly can be extended along the axis direction of the limit platform III. Through setting up first installation component into mount pad one and flexible subassembly, mount pad one can restrict flexible subassembly and first coil spring's extreme point, and can be connected first coil spring and stack shell, flexible subassembly can be pneumatic also can be electronic, flexible subassembly can be when using the convenient to use person conveniently adjusts first coil spring's initial preload, spacing platform III is convenient for flexible subassembly and removes, avoid damaging the screw thread, it is convenient to realize the change curve regulation of spring system rigidity, it is more convenient to let the use, the car is taken more comfortablely.

Preferably, the second mounting assembly comprises a second mounting seat and a telescopic assembly, a limiting table IV is arranged at one end, close to the second spiral spring, of the second mounting seat, the second threaded hole penetrates through the second mounting seat and the limiting table IV, the telescopic assembly is sleeved on the outer wall of the limiting table IV, a limiting table VII is arranged at one end, far away from the second mounting seat, of the telescopic assembly, and the telescopic assembly can stretch along the axis direction of the limiting table IV. Through setting up the second installation component into mount pad two and flexible subassembly, mount pad two can restrict flexible subassembly and second coil spring's extreme point, and can be connected second coil spring and pars contractilis, flexible subassembly can be pneumatic also can be electronic, flexible subassembly can be when using the convenient user adjust second coil spring's initial preloading, spacing platform IV is convenient for flexible subassembly and is removed, avoid losing the screw thread, it is convenient to realize the change curve regulation of spring system rigidity, it is more convenient to let the use, the car is taken more comfortablely.

Preferably, flexible subassembly includes first mounting panel, second mounting panel, set up in first mounting panel with gasbag subassembly between the second mounting panel, first mounting panel, second mounting panel, gasbag subassembly middle part all are provided with the second through-hole, and the second through-hole runs through first mounting panel, second mounting panel and gasbag subassembly, first mounting panel, second mounting panel and gasbag subassembly all pass through the second through-hole cover is located on the barrel, the gasbag subassembly can be through aerifing and adjusting its height with the gassing. Through setting up the subassembly that stretches out and draws back into the gasbag subassembly, through aerifing and the altitude mixture control that the gasbag was realized to the gassing for the gasbag has certain damping and cushioning effect simultaneously for the rigidity of car changes the interval bigger, can be fit for the use of multiple operating mode, sets up first mounting panel and second mounting panel respectively in the both sides of gasbag, is convenient for carry out the nature determination to the gasbag, and the transmission of realization power that can be better.

The application also provides a use method of the series helical spring type step energy storage mechanism, which comprises the following steps:

1) selecting the first and second coil springs according to vehicle parameters and having the maximum preload of the first coil spring less than the maximum preload of the second coil spring:

2) sleeving a first spiral spring on a barrel body, sleeving a second spiral spring on a telescopic part, arranging an intermediate adjusting component between the first spiral spring and the second spiral spring, installing the intermediate adjusting component between the first spiral spring and the second spiral spring and connecting the first spiral spring and the second spiral spring with the barrel body, installing a first seat component at one end of the first spiral spring, far away from the intermediate adjusting component, and connecting the first seat component with the barrel body, and installing a second installation component at one end of the second spiral spring, far away from the intermediate adjusting component, and connecting the second installation component with the telescopic part;

3) the end part of the cylinder body is hinged with the body of the automobile, and the end part of the telescopic part is hinged with the automobile suspension part;

4) adjusting the initial preload F of the first coil spring by the first mounting assembly in cooperation with the intermediate adjustment assembly₁₀，F₁₀Greater than 0; adjusting an initial preload F of a second coil spring by a second mounting assembly₂₀Said F₂₀Greater than 0 and allowing an initial preload F of the first coil spring₁₀Greater than the initial preload F of the second coil spring₂₀；

5) When the automobile is in running, the suspension system of the automobile is stressed, and the stress F is less than F₁₀Due to the initial preload F of the first coil spring₁₀Greater than the initial preload F of the second coil spring₂₀Only the second coil spring is compressed at this time;

6) when the stress of the suspension system of the automobile is continuously increased and the stress of the suspension system is smaller than the maximum preload of the first spiral spring, at the moment, the middle adjusting assembly can move towards the direction of the first spiral spring along the cylinder body, so that the first spiral spring and the second spiral spring are in a serial connection state, and at the moment, the first spiral spring and the second spiral spring are compressed;

7) when the stress of the suspension system of the automobile is increased again and the stress of the suspension system is larger than the maximum preload of the first spiral spring, the first spiral spring can be compressed to the maximum compression stroke, the first spiral spring can be out of work, and only the second spiral spring participates in work and can be compressed.

When the first spiral spring and the second spring are selected according to automobile parameters, firstly, the stiffness curve of an automobile suspension system of an automobile under different use conditions is determined according to the existing automobile theory or computer simulation, and the method belongs to the prior art and can be realized through the existing mode. The method comprises the steps that a first spiral spring and a second spiral spring are selected according to a stiffness curve of an automobile suspension system, the maximum sound load of the first spiral spring is required to be smaller than the maximum load of the second spiral spring when the first spiral spring and the second spiral spring are selected, and specific parameters such as stiffness, compression stroke, shape, inner diameter and the like of the first spiral spring and the second spiral spring can be selected in a matched mode with the shapes of a cylinder body and a telescopic portion according to the existing automobile theory. By the method, the rigidity of the series coil spring type step energy storage mechanism presents a three-stage step state shown in fig. 12, and compared with a suspension with a single spring in the prior art and fig. 11, the rigidity change range is larger, and the method can be applied to more scenes.

Compared with the prior art, the invention has the following advantages and beneficial effects:

1) this application is through setting up first coil spring and second coil spring to let maximum load different among first coil spring and the second coil spring, can let spring system gross stiffness present the ladder state change when using, make the bulk stiffness characteristic present the effect that the ladder changes. The invention is applied to the vehicle suspension, so that the energy storage effect of the vehicle is better when the shock absorber moves in a small stroke under most conventional working conditions, and better comfort is realized. Meanwhile, under the violent working condition of vehicle running, the shock absorber moves in a large stroke, and the spring system has the characteristic of high rigidity. The support of the vehicle chassis can be ensured during the compression stroke, and the large stroke is prevented from touching the stroke limit of the shock absorber; the shock absorber can rebound quickly during rebound stroke, and the grounding performance of the tire is improved. The comfort and the operation stability performance of the vehicle are improved.

2) This application is through setting up middle adjusting part into third mount pad subassembly and fourth installation component, and the third mount pad subassembly can restrict the little spring of maximum load and remove to the big direction of maximum load among first coil spring and the second coil spring, and the third mount pad subassembly passes through the screw thread to be installed on the stack shell simultaneously, can adjust first coil spring with the little initial preload of maximum load among the second coil spring, the performance debugging in the later stage of being convenient for and the debugging when matching different motorcycle types and installing for the debugging is more easy to assemble simpler.

3) This application is through setting up the second mount table, and fourth mount pad subassembly can advance to move at the outer wall of second mount table, scrapes flower and wearing and tearing with the screw thread on the stack shell when having avoided fourth mount pad subassembly to remove along the stack shell, influences the regulation of third mount pad.

4) This application sets up spacing platform II through the little one end of maximum load in spacing platform I is close to first coil spring and second coil spring, spacing platform II moves along with barrel along spacing platform I, because spacing platform II has a take the altitude, move one section distance can with support on the first installation component or the second installation component of tip, thereby it reaches the maximum compression stroke to have restricted in first coil spring and the second coil spring one of maximum load, and be unlikely to compressed to the ring always, can improve the life of spring, avoid the spring to damage.

5) This application is through setting up flexible subassembly, the convenient preloading of real-time dynamic adjustment spring of flexible subassembly, and set up flexible subassembly into the gasbag subassembly, through aerifing and the altitude mixture control that the gassing realized the gasbag for the gasbag, the gasbag has certain damping and cushioning effect simultaneously, make the rigidity change interval of car bigger, can be fit for the use of multiple operating mode, set up first mounting panel and second mounting panel respectively in the both sides of gasbag, be convenient for qualitatively the gasbag, and the transmission of realization power that can be better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a first overall structure diagram of the embodiment of the invention.

Fig. 2 is a partial cross-sectional view of a second overall structure of an embodiment of the invention.

Fig. 3 is an enlarged schematic view of a structure in embodiment a of the present invention.

Fig. 4 is a partially cross-sectional schematic view of a third overall structure of an embodiment of the invention.

Fig. 5 is an enlarged schematic view of a structure in embodiment B of the present invention.

Fig. 6 is a partial cross-sectional schematic view of a fourth overall structure of an embodiment of the invention.

Fig. 7 is an enlarged schematic view of a structure in embodiment C of the present invention.

Fig. 8 is an enlarged schematic view of the structure in embodiment D of the present invention.

Fig. 9 is an enlarged schematic view of the structure in embodiment E of the present invention.

FIG. 10 is a schematic cross-sectional view of a retraction assembly in accordance with an embodiment of the present invention.

FIG. 11 is a graphical representation of the overall stiffness of the spring system with the same initial load for the first and second coil springs.

Fig. 12 is a schematic view of the spring system in which the initial loads of the first coil spring and the second coil spring are different and the initial preload for making the maximum load smaller in the first coil spring and the second coil spring is larger than the overall stiffness in the other state.

Reference numbers and corresponding part names in the drawings:

1-a barrel body, 2-a telescopic part, 3-a first coil spring, 4-a second coil spring, 5-a first threaded hole, 6-a second threaded hole, 7-a third threaded hole, 8-a first mounting table, 9-a second mounting table, 10-a limiting table I, 11-a through hole, 12-a limiting table II, 13-a second through hole, 14-a mounting table I, 15-a limiting table III, 16-a mounting table II, 17-a limiting table IV, 18-a first mounting plate, 19-a second mounting plate, 20-a second mounting plate, 21-a first mounting assembly, 22-a second mounting assembly, 23-a third mounting seat assembly, 24-a fourth mounting seat assembly, 25-a telescopic assembly, 26-a limiting table V, 27-a limiting table VI, 28-a limit table VII.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.