A guide for a ring spring assembly

Abstract

The application discloses a guide device for a ring spring set, which comprises a guide mandrel arranged on the axis of the ring spring set and a guide cylinder sleeved outside the ring spring set, the lower bottom surface of the guide mandrel is fixed with a base, the side surface of the base is mutually matched with the inner side surface of the guide cylinder and is fixedly connected, the top of the guide cylinder is covered with a compression cover, the guide mandrel, the guide cylinder, the base and the compression cover jointly form a cavity for accommodating the ring spring set, the side wall of the guide mandrel is circumferentially provided with three or more guide positioning strips, two or more guide positioning frames are movably arranged between the guide cylinder and the outer ring of the ring spring set, the guide positioning frame is a V-shaped elastic plate, and the V-shaped opening of the V-shaped elastic plate faces the ring spring set. The application can ensure that the inner and outer rings of the ring spring set do not produce relative inclination along the axial direction, eliminate the problems of the reduced contact area and the reduced conical angle, ensure that the ring spring does not produce self-locking after unloading, and realizes free rebound.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of spring, and particularly relates to a guide device for a ring spring set. BACKGROUND

[0002] The ring spring is composed of an outer ring and an inner ring with matching conical surfaces. When the ring spring bears axial load, the inner ring is compressed and its diameter is reduced, and the outer ring is stretched and its diameter is expanded. The inner and outer rings slide along the conical surface to produce axial deformation, thereby playing a spring role. Because the friction force is large when the ring spring is working, the friction force hinders the recovery of the spring deformation when unloaded, so that the stiffness curves of loading and unloading do not coincide, thereby forming hysteresis. The hysteresis energy consumption can reach 60% to 70% of the work done during loading, that is, the ring spring has strong buffering and damping capacity, the energy storage capacity of unit volume of material is larger than that of other types of springs, and the economy is better. Therefore, the ring spring is particularly suitable for places where the space size is limited and a large amount of energy needs to be absorbed, and places where strong buffering is required. Therefore, the ring spring is widely used in large pipeline hangers, vibration support and buffering occasions.

[0003] In actual application process, the length of the matching conical surfaces of the outer ring and the inner ring of the ring spring in free state and initial assembly is extremely short, the length-diameter ratio is only 0.06 to 0.09, and the conical angle β is 12° to 30°. According to the fixture positioning theory, the positioning of the inner ring to the outer ring belongs to short taper pin positioning. The inner ring only limits the three movement degrees of freedom of the outer ring, and the two tilt degrees of freedom in the axial direction cannot be positioned and limited. Therefore, in the free state and initial assembly, the two tilt degrees of freedom in the axial direction between the outer ring and the inner ring cannot be positioned and limited by the matching conical surfaces, so that the coaxiality of the outer ring and the inner ring cannot be ensured.

[0004] In order to prevent lateral imbalance, the ring spring is generally installed on a guide cylinder or a guide mandrel. When the ring spring bears axial load, the inner ring is compressed and its diameter is reduced, and the outer ring is stretched and its diameter is expanded. Therefore, a tightly fitted guide cylinder cannot be used to guide and position the outer cylindrical surface of the outer ring, and a tightly fitted guide mandrel cannot be used to guide and position the hole of the inner ring. According to the recommendation of the ring spring design section of the mechanical design manual, a certain gap should be left between the spring and the guide device, and the value of the gap can be about 2% of the diameter of the inner ring hole. According to the positioning limit deviation calculated by the gap value, according to the lower limit of the height-diameter ratio recommended value, the inner and outer rings will have a tilt limit deviation of ±3.91° in the axial direction, and according to the upper limit of the height-diameter ratio recommended value, the inner and outer rings will have a tilt limit deviation of ±5.64° in the axial direction, resulting in a relative limit deviation of the inner and outer rings of ±7.82° to ±11.28°.

[0005] Because the positioning accuracy of the existing guide cylinder to the annular spring group is poor, the axial inclination angle between the inner and outer rings is too large, the contact area between the inner and outer rings is small, and the conical angle of the contact surface is small, which causes the deformation of the inner and outer rings to be uneven during compression. When the conical angle of the contact surface is smaller than the friction angle, the displacement jump caused by breaking through the static friction during compression will lead to a non-smooth and continuous stiffness curve, and the annular spring will be self-locked after unloading, and cannot be rebounded. In work, there are often occasions that require complete unloading of the annular spring, at this time, the inner and outer rings are not pre-tightened and constrained relative to each other, and when compressed again, the annular spring is prone to self-locking after unloading due to the decrease of the conical angle of the contact surface, and cannot be rebounded. Especially in the application occasion that the annular spring group needs to be placed obliquely, the inner and outer rings are more likely to be inclined to each other, the annular spring cannot be rebounded and separated after compression, and cannot be used again, which increases the production cost and greatly limits the wide application of the annular spring.

[0006] Therefore, it is necessary to invent a guide device that can adapt to the diameter change of the inner and outer rings of the annular spring group during compression and rebounding, and can continuously provide good guiding and positioning capability for the inner and outer rings. SUMMARY

[0007] The purpose of the present application is to overcome the shortcomings of the prior art and provide a guide device for an annular spring group.

[0008] The technical scheme adopted by the present application is as follows:

[0009] A guide device for an annular spring group, which comprises a guide mandrel arranged on the axis of the annular spring group and a guide cylinder sleeved on the outside of the annular spring group, the lower bottom surface of the guide mandrel is fixed with a base, the side surface of the base is in close contact with the inner surface of the guide cylinder and is fixedly connected, the top of the guide cylinder is covered with a compression cover, the guide mandrel, the guide cylinder, the base and the compression cover jointly form a cavity for accommodating the annular spring group, the side wall of the guide mandrel is provided with three or more guide positioning strips in the circumferential direction, two or more guide positioning frames are movably arranged between the guide cylinder and the outer ring of the annular spring group, the guide positioning frame is a V-shaped elastic plate structure, and the V-shaped opening of the guide positioning frame faces the annular spring group.

[0010] Further, the side wall of the guide mandrel is provided with a plurality of key grooves for mounting the guide positioning strips in the circumferential direction, and a elastic support strip is arranged between the key groove and the guide positioning strip.

[0011] In a specific scheme, the compression cover is an annular groove body with an opening facing downward, which comprises an annular cover top and two vertically erected outer and inner ring columns, the inner surface of the outer ring column is in close contact with the outer surface of the guide cylinder, and the bottom surface of the inner ring column abuts against the top of the inner ring of the annular spring group.

[0012] In a preferred solution, when the elastic support strip is in a free state, the diameter of the circumscribed circle formed by the guide positioning strips on the guide mandrel is greater than the hole diameter of the inner ring of the annular spring set, and when the elastic support strip is in an extreme compression state, the diameter of the circumscribed circle formed by the guide positioning strips on the guide mandrel is less than 95% of the hole diameter of the inner ring of the annular spring set.

[0013] Specifically, the guide positioning frame includes two side wings arranged in a V shape, and the top of the side wing is provided with an outwardly inclined winglet.

[0014] In the device, the height of the inner ring column is greater than the compression stroke of the annular spring set, the outer diameter of the inner ring column is less than the outer diameter of the outer ring of the annular spring set, and the hole diameter of the inner ring column is greater than the hole diameter of the inner ring of the annular spring set.

[0015] Preferably, the number of guide positioning strips is four, and they are arranged equidistantly in the circumferential direction along the side wall of the guide mandrel.

[0016] Preferably, the number of guide positioning frames is four, and they are arranged equidistantly between the guide mandrel and the guide cylinder.

[0017] The beneficial effects of the present application are:

[0018] The present application has the advantages of simple structure and ingenious design. The guide positioning frame arranged between the guide cylinder and the outer ring of the annular spring set realizes the axial two-tilt-degree-of-freedom guiding and positioning of the outer ring of the annular spring set. The elastic support strip and the guide positioning strip arranged on the guide mandrel realize the axial two-tilt-degree-of-freedom guiding and positioning of the inner ring of the annular spring set. The elastic deformation of the two side wings of the guide positioning frame automatically adapts to the diameter change of the outer ring of the annular spring set during the compression and rebound process. The winglet at the top of the guide positioning strip can guide the outer ring of the annular spring set into the device. The elastic deformation of the elastic support strip automatically adapts to the diameter change of the inner ring of the annular spring set during the compression and rebound process. Therefore, it can adapt to the diameter change of the inner and outer rings of the annular spring set during the compression and rebound process, and can continuously provide good guiding and positioning for the inner and outer rings, ensuring that the inner and outer rings do not produce relative tilt along the axial direction, completely eliminating the problems of small contact area and small conical angle of the contact surface caused by assembly, complete unloading and reloading, horizontal placement and gravity deflection, etc., ensuring that the annular spring does not produce self-locking after unloading to realize free rebound, solving the problem of non-smooth and continuous stiffness curve. The compression cover and the guide cylinder cooperate with each other to realize the overall covering of the annular spring set, which can effectively prevent dust and dirt from polluting the conical surface of the annular spring set, thereby reducing the wear of the annular spring set during the working process and prolonging the service life. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the internal structure of the present application.

[0020] Figure 2 is an exploded view of the present application;

[0021] Figure 3 is a longitudinal sectional view of the present application;

[0022] Figure 4 is a transverse sectional view of the present application;

[0023] Figure 5 is a schematic view of the structure of the guide positioning frame in the present application;

[0024] Figure 6 is a schematic view of the inclination angle of the inner ring axis of the annular spring caused by poor guide positioning precision of the guide mandrel in the prior art;

[0025] Figure 7 is a schematic view of the inclination angle of the outer ring axis of the annular spring caused by poor guide positioning precision of the guide cylinder in the prior art;

[0026] Figure 8 is a schematic view of the relative limit deviation of the inclination of the inner and outer ring axes of the annular spring group in the prior art;

[0027] Figure 9 is a loading curve obtained by testing Example 1;

[0028] Figure 10 is a loading curve obtained by testing Comparative Example 1;

[0029] In the figure: 1 - guide cylinder; 2 - guide mandrel; 3 - base; 4 - compression cover; 4.1 - cover top; 4.2 - outer ring column; 4.3 - inner ring column; 5 - annular spring group; 5.1 - outer ring of the annular spring group; 5.2 - inner ring of the annular spring group; 6 - guide positioning frame; 6.1 - side wing; 6.2 - small wing; 7 - key groove; 8 - guide positioning strip; 9 - elastic support strip. DETAILED DESCRIPTION

[0030] The present application will be further described below in conjunction with the accompanying drawings:

[0031] As shown in the figure, the present application comprises a guide mandrel 2 arranged on the axis of the annular spring group and a guide cylinder 1 sleeved on the outside of the annular spring group, the lower bottom surface of the guide mandrel 2 is fixed with a base 3, the side surface of the base 3 is mutually fitted and fixedly connected with the inner surface of the guide cylinder 1, the top of the guide cylinder 1 is covered with a compression cover 4, the guide mandrel 2, the guide cylinder 1, the base 3 and the compression cover 4 jointly form a cavity for accommodating the annular spring group, the cavity is in the shape of an annular column, the side wall of the guide mandrel 2 is provided with three or more guide positioning strips 8 along the circumference, two or more guide positioning frames 6 are movably arranged between the guide cylinder 1 and the outer ring of the annular spring group, the guide positioning frame 6 is in the shape of a V-shaped elastic plate, and the V-shaped opening thereof faces the annular spring group.

[0032] The guiding positioning frame 6 does not need to be fixedly connected with the inner side wall of the guiding cylinder 1, and the operator only needs to uniformly place the guiding positioning frame 6 in the guiding cylinder 1 during assembly.

[0033] In the device, the guiding mandrel 2, the guiding cylinder 1, the base 3 and the compression cover 4 are coaxially arranged, the side wall of the guiding mandrel 2 is provided with a plurality of key grooves 7 for mounting the guiding positioning strips 8 in the circumferential direction, the guiding positioning strips 8 are arranged in the axial direction of the guiding mandrel 2 and are arranged in the key grooves 7, the elastic supporting strips 9 are arranged between the key grooves 7 and the guiding positioning strips 8, the elastic supporting strips 9 can push the guiding positioning strips 8 to expand or contract in the radial direction in the key grooves 7 by elastic deformation, which can not only adapt to the diameter change of the inner ring 5.2 of the annular spring group during compression and rebound, but also can limit the two inclination degrees of the inner ring 5.2 of the annular spring group in the axial direction during assembly and reloading after complete unloading.

[0034] Specifically, the size of the key groove 7 is designed according to GB / T1095 “Profile Dimensions of Key and Keyway” except the depth, the guiding positioning strip 8 is made of the key strip of GB / T1096 “General Purpose Flat Key” and can expand or contract in the radial direction in the key groove on the guiding mandrel.

[0035] The depth size of the key groove 7 is designed according to the thickness of the elastic supporting strip 9 and the guiding positioning strip 8, which ensures that the elastic supporting strip 9 is in a free state, the guiding positioning strip 8 forms an inscribed circle on the guiding mandrel 2 with a diameter greater than the hole diameter of the inner ring 5.2 of the annular spring group, when the elastic supporting strip 9 is in a designed limit compression state, that is, the maximum allowable deformation of the elastic supporting strip 9 needs to meet the requirement of 5% shrinkage of the inner ring 5.2 of the annular spring group, the guiding positioning strip 8 forms an inscribed circle on the guiding mandrel 2 with a diameter less than 95% of the hole diameter of the inner ring 5.2 of the annular spring group, and the guiding positioning strip 8 is used to limit the two inclination degrees of the inner ring 5.2 of the annular spring group in the axial direction.

[0036] Specifically, the surface of the elastic supporting strip 9 is provided with adhesive, which is fixed between the key groove 7 and the guiding positioning strip 8 by pasting, and the adhesive can prevent the guiding positioning strip 8 and the elastic supporting strip 9 from being separated from the key groove 7 during assembly.

[0037] The guide positioning frame 6 is made of elastic plate material, such as 65Mn steel plate after bending and heat treatment, in V-shaped structure, before the annular spring group outer ring 5.1 is installed, the two side wings 6.1 of the guide positioning frame 6 form an inscribed circle with a diameter less than 95% of the outer diameter of the annular spring group outer ring 5.1, when the annular spring group outer ring 5.1 is installed, it forces the V-shaped angle between the two side wings 6.1 of the guide positioning frame 6 to increase, and the side wings 6.1 are tightly attached to the outer cylindrical surface of the annular spring group outer ring 5.1 under the action of the elastic force, using the V-block guide positioning principle of the clamp positioning theory, the two tilt degrees of the annular spring group outer ring 5.1 in the axial direction are guided and positioned, specifically, the guide positioning frame 6 includes two side wings 6.1 arranged in V shape, using the elastic deformation of the two side wings 6.1, it can automatically adapt to the diameter change of the annular spring group outer ring 5.1 during compression and rebound, and can limit the two tilt degrees of the annular spring group outer ring 5.1 in the axial direction during assembly and reloading after complete unloading, so as to adapt to the diameter change of the inner and outer rings of the annular spring group 5 during compression and rebound, and to continuously provide good guidance and positioning for the inner and outer rings, to ensure that the inner and outer rings do not tilt relatively in the axial direction, to completely eliminate the problems of small contact area and small conical angle of the contact surface caused by assembly, complete unloading and reloading, horizontal placement and gravity deflection, and finally to ensure that the annular spring group 5 does not self-lock after unloading to realize free rebound.

[0038] In a preferred scheme, the top of the side wing 6.1 is provided with an outwardly inclined winglet 6.2, which is made of bending process, and the uppermost end forms an inscribed circle with a diameter greater than the outer diameter of the annular spring group outer ring 5.1, which is used to guide the annular spring group outer ring 5.1 to be installed in the device.

[0039] In a specific scheme, the compression cover 4 is an open downward annular groove, including a ring-shaped cover top 4.1 and two side vertical outer and inner ring columns 4.2 and 4.3, the inner side surface of the outer ring column 4.2 is attached to the outer side surface of the guide cylinder 1, and the bottom surface of the inner ring column 4.3 is in contact with the top of the annular spring group inner ring.

[0040] Further, the height of the inner ring column 4.3 is greater than the compression stroke of the annular spring group, the outer diameter of the inner ring column 4.3 is less than the outer diameter of the annular spring group outer ring 5.1, and the hole diameter of the inner ring column 4.3 is greater than the hole diameter of the annular spring group inner ring 5.2, which ensures that it does not affect the normal work of the annular spring group 5. The compression cover 4 cooperates with the guide cylinder 1 to realize the overall covering of the annular spring group 5, which can effectively prevent dust and dirt from polluting the working conical surface of the annular spring group inner ring 5.2 and the annular spring group outer ring 5.1, thereby reducing the wear of the annular spring group 5 during work and prolonging its service life.

[0041] In a preferred solution, the number of guiding positioning bars 8 is four, which are equidistantly arranged in the circumferential direction of the side wall of the guiding mandrel 2, the number of guiding positioning frames 6 is four, which are equidistantly arranged between the guiding mandrel 2 and the guiding cylinder 1, the elastic supporting bar 9 is made of a 3mm-thick foamed silica gel plate with non-dry adhesive on both sides, the guiding positioning frame 6 is made of a 65Mn material steel plate with elasticity after bending and heat treatment, and the number of the guiding positioning frame 6 is four, which are uniformly arranged, so that the device is more stable in use and the guiding effect is better.

[0042] In another preferred solution, the side wall of the guiding mandrel 2 is provided with three guiding positioning bars 8 equidistantly arranged in the circumferential direction, which are arranged in the corresponding key grooves 7 uniformly distributed, and the elastic supporting bar 9 is arranged between the guiding positioning bar 8 and the key groove 7, the elastic supporting bar 9 is made of a 4mm-thick foamed rubber plate with non-dry adhesive on both sides, the guiding positioning frame 6 is made of a 60Si2Mn material steel plate with elasticity after bending and heat treatment, and the number of the guiding positioning frame 6 is two, which are symmetrically arranged, and the inner ring column hole of the compression cover 4 is used for positioning when the device is installed.

[0043] The use process of the device is as follows:

[0044] In use, first, the first annular spring set inner ring 5.2 is loaded on the guiding mandrel 2 and is pushed to be tightly attached to the end face of the base 3, and in the loading process, the annular spring set inner ring 5.2 extrudes the guiding positioning bar 8 and the elastic supporting bar 9, so that the guiding positioning bar 8 and the elastic supporting bar 9 are contracted, and the elastic supporting bar 9 generates a rebound force, so that the guiding positioning bar 8 is tightly attached to the inner wall of the annular spring set inner ring 5.2, then the guiding positioning frame 6 is placed in the guiding cylinder 1 and is uniformly distributed, and then the first annular spring set outer ring 5.1 is loaded, and in the loading process, the annular spring set outer ring 5.1 extrudes the small wing 6.2, so that the V-shaped angle between the two side wings 6.1 of the guiding positioning frame 6 is enlarged, the two side wings 6.1 are tightly attached to the outer wall of the annular spring set outer ring 5.1 under the action of the rebound force, and the annular spring set outer ring 5.1 is pushed downward, so that the inner tapered surface of the annular spring set outer ring 5.1 is attached to the outer tapered surface of the annular spring set inner ring 5.2 which has been loaded, then the remaining annular spring set inner ring 5.2 and annular spring set outer ring 5.1 are sequentially and alternately installed, so that the annular spring set 5 is formed, and finally the compression cover 4 is buckled, so that the inner side surface of the outer ring column 4.2 of the compression cover 4 is attached to the outer side surface of the guiding cylinder 1, and the compression cover 4 is pushed, so that the end face of the inner ring column 4.3 of the compression cover 4 is attached to the end face of the annular spring set inner ring 5.2 located at the topmost position, that is, the overall assembly is completed.

[0045] The spring in the device is a compression spring, which is used in a pressure-bearing occasion. In use, the device loaded with the compression spring set is placed between a supporting surface and a pressure-bearing surface. If positioning of the installation position of the device is required, a positioning hole can be designed on the bottom end face of the base 3 according to the requirement, or the inner ring column hole of the upper compression cover 4 can be used for positioning.

[0046] Example 1

[0047] The side wall of the guide mandrel 2 is provided with four equidistant guide positioning strips 8, which are installed in the corresponding key grooves 7 distributed uniformly, and an elastic support strip 9 is arranged between each guide positioning strip 8 and the key groove 7. The elastic support strip 9 is made of a 3mm-thick foamed silica gel plate with adhesive on both sides. The guide positioning frame 6 is made of a 65Mn steel plate with elasticity after bending and heat treatment, and the number of the guide positioning frame 6 is four, which are placed uniformly.

[0048] The parameters of the annular spring are as follows: the designed maximum working load is 300kN, the designed maximum compression stroke is 20mm, the process stiffness is 13.4kN / mm, the return stiffness is 2.78kN / mm, the conical surface angle is 13.2°, the outer ring diameter of the annular spring is 100mm, the number of the conical surface of the annular spring is 10, the inner / outer ring height is 23mm, and the free height of the annular spring is 143.75mm.

[0049] The device equipped with the above annular spring is placed on an electro-hydraulic servo pressure test bench to perform loading and unloading tests.

[0050] Test conditions: GL-40T electro-hydraulic servo pressure test bench, manual loading mode, the working pressure of the actuator is adjusted by manually changing the given voltage of the proportional pressure valve to control the loading amplitude.

[0051] Test process: the load is gradually applied from small to large to 300kN and then gradually unloaded to 0kN, and the readings of the force sensor and the displacement sensor are recorded. The loading process is repeated to complete another test, and the readings of the force sensor and the displacement sensor are recorded. The loading curve is drawn by using the displacement data and the load data, as shown in Figure 9 , the process stiffness and the return stiffness are calculated.

[0052] The loading curve obtained by the test of Example 1 Figure 9 It can be seen that the loading process curve is continuous and smooth, the process stiffness meets the design index, the unloading return curve is continuous and smooth, the return stiffness meets the design index, and the process curve and the return curve intersect at the origin, which proves that the annular spring of the device can freely rebound without self-locking after complete unloading.

[0053] Comparative Example 1

[0054] The test conditions and the test process are the same as those of Example 1, only the annular spring with the same parameters is used to perform loading and unloading tests, and the readings of the force sensor and the displacement sensor are recorded. The loading curve is drawn by using the displacement data and the load data, as shown in Figure 10 , the process stiffness and the return stiffness are calculated.

[0055] The loading curve obtained by the test of Comparative Example 1 Figure 10It can be seen that the loading process curve is stepped, and the process curve and the return curve do not intersect, proving that after complete unloading, the annular spring cannot return to the initial height, and the annular spring appears self-locking failure.

[0056] It can be seen from the test results of Example 1 and Comparative Example 1 that the device can ensure that no relative tilting occurs between the inner and outer rings in the axial direction, completely eliminating problems such as a decrease in contact area and a decrease in the conical angle of the contact surface caused by assembly, reloading after complete unloading, and gravity deflection when placed horizontally, and the annular spring does not produce self-locking to achieve free rebound after unloading, solving the problem of non-smooth and continuous stiffness curve.

[0057] Other processes of the application can use existing technologies.

[0058] The best embodiment of the application has been described, and further development of the application by those of ordinary skill in the art falls within the scope of the application.

Claims

1. A guide for a ring of springs, characterized in that It includes the guide core shaft (2) arranged on the axis of the ring spring group and the guide cylinder (1) sleeved outside the ring spring group, the lower bottom surface of the guide core shaft (2) is fixed with the base (3), the side surface of the base (3) and the inner side surface of the guide cylinder (1) are mutually matched and fixedly connected, the top of the guide cylinder (1) is covered with the compression cover (4), the guide core shaft (2), the guide cylinder (1), the base (3) and the compression cover (4) jointly form a cavity for accommodating the ring spring group, the side wall of the guide core shaft (2) is provided with three or more than three guide positioning strips (8) in the circumferential direction, two or more than two guide positioning frames (6) are movably arranged between the guide cylinder (1) and the outer ring of the ring spring group, the guide positioning frame (6) is a V-shaped elastic plate structure, and the V-shaped opening of the guide positioning frame (6) faces the ring spring group. The ring spring group is composed of an outer ring and an inner ring with matching conical surfaces, and the outer ring and the inner ring have a plurality of The side wall of the guide core shaft (2) is provided with a plurality of key grooves (7) for mounting the guide positioning strips (8) in the circumferential direction, and a elastic support strip (9) is arranged between the key groove (7) and the guide positioning strip (8); the long edges of the guide positioning strip (8) and the key groove (7) are parallel to the axial direction of the guide core shaft (2), and the guide positioning strip (8) is in contact with the inner wall of all the inner rings of the ring spring group. The guide positioning frame (6) includes two side wings (6.1) arranged in a V shape, the top of the side wing (6.1) is provided with an outwardly inclined winglet (6.2), and the two side wings (6.1) are in contact with the outer wall of all the outer rings of the ring spring group.

2. A guide for a ring of Belleville springs as claimed in claim 1, characterized in that The compression cover (4) is an open downward annular groove body, which includes an annular cover top (4.1), and two side vertical outer ring columns (4.2) and inner ring columns (4.3), the inner side surface of the outer ring column (4.2) is matched with the outer side surface of the guide cylinder (1), and the bottom surface of the inner ring column (4.3) is in abutment with the top of the inner ring of the ring spring group.

3. The guide for a ring of springs as defined in claim 1, characterized in that When the elastic support strip (9) is in a free state, the diameter of the circumscribed circle formed by the guide positioning strip (8) on the guide core shaft (2) is greater than the hole diameter of the inner ring of the ring spring group, and when the elastic support strip (9) is in a limit compression state, the diameter of the circumscribed circle formed by the guide positioning strip (8) on the guide core shaft (2) is less than 95% of the hole diameter of the inner ring of the ring spring group.

4. The guide for a ring of springs as defined in claim 2, wherein The height of the inner ring column (4.3) is greater than the compression stroke of the ring spring group, the outer diameter of the inner ring column (4.3) is less than the outer diameter of the outer ring of the ring spring group, and the hole diameter of the inner ring column (4.3) is greater than the hole diameter of the inner ring of the ring spring group.

5. The guide for a ring spring set according to claim 1, characterized in that The number of the guide positioning strips (8) is four, which are equidistantly arranged in the circumferential direction along the side wall of the guide core shaft (2).

6. The guide for a ring of Belleville springs as defined in claim 1, characterized in that The number of the guide positioning frames (6) is four, which are equidistantly arranged between the guide core shaft (2) and the guide cylinder (1).

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