CN115978118B - Linear high-rigidity wedge spring assembly for thimble - Google Patents
Linear high-rigidity wedge spring assembly for thimble Download PDFInfo
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- CN115978118B CN115978118B CN202211710534.4A CN202211710534A CN115978118B CN 115978118 B CN115978118 B CN 115978118B CN 202211710534 A CN202211710534 A CN 202211710534A CN 115978118 B CN115978118 B CN 115978118B
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Abstract
The invention relates to the technical field of equipment springs, in particular to a linear high-rigidity wedge-type spring assembly for a thimble, which comprises two groups of wedge-type end face elastic pieces, wherein wedge-type multi-layer elastic rings are uniformly arranged between the wedge-type end face elastic pieces, wedge-type middle elastic pieces are uniformly arranged between the wedge-type end face elastic pieces, the wedge-type multi-layer elastic rings are positioned between the wedge-type middle elastic pieces, a pre-tightening hollow bolt is arranged on one side of one group of wedge-type end face elastic pieces, and a pre-tightening nut is arranged on one side of the other group of wedge-type end face elastic pieces. The device can realize the change of the integral rigidity of the device by changing the number of layers of the wedge-type multilayer elastic ring, the rigidity is derived from the tensile deformation of each layer of elastic ring, the linear rigidity is easy to calibrate, and the inclination of each layer of elastic ring is gradually increased from inside to outside, so that the material deformation is fully utilized, the rigidity and the bearing capacity are larger, the stress is uniform, the axial size is small, the device is more suitable for small-space occasions, the split type multilayer structure is adopted, and the replacement and the maintenance as well as the product serialization are easier.
Description
Technical Field
The invention relates to the technical field of equipment springs, in particular to a linear high-rigidity wedge spring assembly for a thimble.
Background
The spring is an industrial part commonly used in the fields of shock absorption, pre-tightening and loosening prevention, displacement compensation, adhesive force application and the like, is an essential key component for production and life, and is most common in the fields of large-rigidity small-size springs;
the nonlinear rigidity of the disc spring is not easy to calibrate, the stress of the annular spring is uneven, the axial size is large, the applicability of a small space is reduced, the rigidity and the bearing capacity are difficult to meet the design requirement of a small-size large-load thimble, and aiming at the situation, the linear large-rigidity wedge spring assembly for the thimble is designed.
Disclosure of Invention
The invention aims to provide a linear high-rigidity wedge spring assembly for a thimble, which solves the problems that the nonlinear rigidity of a belleville spring is not easy to calibrate, the stress of an annular spring is uneven, the axial size is larger, the applicability of a narrow space is reduced, the rigidity and the bearing capacity are difficult to meet the design requirement of a small-size high-load thimble, the rigidity of the scheme is derived from the stretching deformation of an elastic ring, the linear rigidity is easy to calibrate, the inclination of each layer of elastic ring is gradually increased from inside to outside, the deformation of materials is fully utilized, the rigidity and the bearing capacity are larger, the stress is uniform, the axial size is small, the rigidity can be adjusted without changing the axial size, the split type multilayer structure is accurate and convenient, and the replacement and the maintenance and the product serialization are easier.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a linear high rigidity wedge spring assembly for thimble, includes wedge terminal surface elastic piece, wedge terminal surface elastic piece is provided with two sets of, evenly be provided with wedge multilayer elastic ring between the wedge terminal surface elastic piece, evenly be provided with wedge middle elastic piece between the wedge terminal surface elastic piece, wedge multilayer elastic ring all is located between the wedge middle elastic piece, a set of one side of wedge terminal surface elastic piece is provided with pretension hollow bolt, another set of one side of wedge terminal surface elastic piece is provided with pretension nut, wedge terminal surface elastic piece, wedge multilayer elastic ring and wedge middle elastic piece are run through to pretension hollow bolt's one end, pretension hollow bolt's one end is connected through the screw thread with pretension nut.
Preferably, the sides of the wedge-shaped end face elastic pieces, which are far away from each other, are all planar, and the sides of the wedge-shaped end face elastic pieces, which are close to each other, are all multi-layer wedge-shaped conical surfaces, so that the wedge-shaped multi-layer elastic rings can be conveniently extruded downwards.
Preferably, the wedge-shaped end face elastic sheets are used in pairs, and the inclination of each outer conical surface on one side of the multilayer wedge-shaped conical surface of the wedge-shaped end face elastic sheet is smaller than that of the adjacent inner conical surface, so that the wedge-shaped end face elastic sheet is convenient to be matched with each layer of the wedge-shaped multilayer elastic ring.
Preferably, the wedge-type multilayer elastic ring is of a multilayer concentric separation structure, gaps are arranged between adjacent layers, conical surfaces with the same inclination are arranged on the upper surface and the lower surface of each layer of the wedge-type multilayer elastic ring, the inclination of each outer conical surface of the wedge-type multilayer elastic ring is smaller than that of each inner conical surface, the wedge-type multilayer elastic ring is convenient to stretch outwards, the wedge-type multilayer elastic ring has the same unit circumference elongation, and the material utilization rate is improved.
Preferably, the wedge-shaped middle elastic piece is of an integrated structure, symmetrical multi-layer wedge-shaped conical surfaces are arranged on two sides of the wedge-shaped middle elastic piece, the inclination of each outer-layer conical surface of the wedge-shaped middle elastic piece is smaller than that of each adjacent inner-layer conical surface, and the wedge-shaped middle elastic piece is convenient to be matched with each layer of the wedge-shaped multi-layer elastic ring.
Preferably, the multi-layer wedge-type conical surfaces of the wedge-type end face elastic sheet correspond to the conical surfaces of one side of each layer of the wedge-type multi-layer elastic ring one by one, the inclination of the multi-layer wedge-type conical surfaces of the wedge-type end face elastic sheet and the inclination of the matched conical surfaces of each layer of the wedge-type multi-layer elastic ring are respectively the same, and the wedge-type end face elastic sheet and each layer of the wedge-type multi-layer elastic ring are matched conveniently.
Preferably, the wedge-type middle elastic sheet multilayer wedge-type conical surfaces are in one-to-one correspondence with the conical surfaces on one side of each layer of the adjacent two wedge-type multilayer elastic rings, and the slopes of the wedge-type middle elastic sheet multilayer wedge-type conical surfaces and the wedge-type multilayer elastic ring layers matched conical surfaces are respectively the same, so that the wedge-type multilayer elastic rings layers and the wedge-type middle elastic sheets are matched.
Preferably, one side of the pre-tightening nut is in extrusion contact fit with the plane side of one group of wedge-type end face elastic sheets, the inner side of the pre-tightening hollow bolt cap is in extrusion contact fit with the plane side of the other group of wedge-type end face elastic sheets, and gaps are formed between the thread cylindrical surface of the pre-tightening hollow bolt and adjacent holes of the wedge-type end face elastic sheets, the wedge-type multi-layer elastic ring and the wedge-type middle elastic sheets, so that the wedge-type multi-layer elastic ring and the wedge-type middle elastic sheets can be conveniently moved.
Compared with the prior art, the invention has the beneficial effects that:
when the wedge-type elastic ring is used, when one side of the plane of the wedge-type end face elastic piece at the upper part is subjected to external pressure to move downwards, the wedge-type multilayer elastic rings matched with the wedge-type end face elastic piece are extruded, the conical surfaces at the lower sides of the layers of the wedge-type multilayer elastic rings are matched with the conical surfaces at the upper sides of adjacent wedge-type middle elastic pieces at the lower parts in a one-to-one correspondence mode, so that the layers of the wedge-type multilayer elastic rings are outwards expanded under the combined action of horizontal components stressed by the upper conical surfaces and the lower conical surfaces, the elastic rings are uniformly stretched and have increased circumferences to generate shrinkage elasticity, as the conical surfaces of the layers of the wedge-type multilayer elastic rings are different in inclination, when the wedge-type end face elastic pieces at the upper part are stressed downwards by a certain distance, the outwards expanding amounts of the wedge-type multilayer elastic rings are also different in the inclination, and the smaller expansion amounts are analyzed according to the inclined matching relation, and are larger because the inclination of the conical surfaces of the outer layers of the wedge-type multilayer elastic rings is smaller than the inclination of the adjacent inner conical surfaces, the expansion amounts of the outer layers are larger than the expansion amounts of the inner layers, namely the circumferential length increment of the inner layers, and the outer circumference is larger than the inner layers, and the inner layers are larger than the inner layers, therefore the proper inclination proportion can enable the inner circumference unit increment and the outer layer to be larger than the outer circumference unit increment (the outer circumference), and the outer layer diameter) and the outer layer diameter unit increment, and the outer layer diameter unit is larger than the same, and the outer layer diameter unit diameter. And the replacement and maintenance and the product serialization are easier.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic cross-sectional view of a wedge-type end elastic sheet according to the present invention;
FIG. 4 is a schematic cross-sectional view of a wedge-type multi-layer elastomeric ring according to the present invention;
FIG. 5 is a schematic cross-sectional view of a wedge-type intermediate elastic sheet according to the present invention;
FIG. 6 is a schematic partial cutaway perspective view of the present invention;
FIG. 7 is an exploded perspective view of the present invention;
fig. 8 is a schematic cross-sectional view of the use of the present invention.
In the figure: 1. wedge-type end surface elastic sheet; 2. wedge-type multilayer elastic ring; 3. wedge-type middle elastic piece; 4. pre-tightening the nut; 5. and pre-tightening the hollow bolt.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-7, an embodiment of the present invention is provided:
the linear high-rigidity wedge spring assembly for the thimble comprises wedge-type end face elastic pieces 1, wherein the wedge-type end face elastic pieces 1 are provided with two groups, wedge-type multi-layer elastic rings 2 are uniformly arranged between the wedge-type end face elastic pieces 1, wedge-type middle elastic pieces 3 are uniformly arranged between the wedge-type end face elastic pieces 1, the wedge-type multi-layer elastic rings 2 are positioned between the wedge-type middle elastic pieces 3, one side of one group of wedge-type end face elastic pieces 1 is provided with a pre-tightening hollow bolt 5, one side of the other group of wedge-type end face elastic pieces 1 is provided with a pre-tightening nut 4, one end of the pre-tightening hollow bolt 5 penetrates through the wedge-type end face elastic pieces 1, the wedge-type multi-layer elastic rings 2 and the wedge-type middle elastic pieces 3, and one end of the pre-tightening hollow bolt 5 is connected with the pre-tightening nut 4 through threads;
referring to fig. 2-6, in this embodiment, one side of the pretensioning nut 4 is in press contact fit with the plane side of one group of wedge-shaped end face elastic pieces 1, the inner side of the cap of the pretensioning hollow bolt 5 is in press contact fit with the plane side of the other group of wedge-shaped end face elastic pieces 1, gaps are arranged between the thread cylindrical surface of the pretensioning hollow bolt 5 and adjacent holes of the wedge-shaped end face elastic pieces 1, the wedge-shaped multi-layer elastic ring 2 and the wedge-shaped middle elastic piece 3, so that the wedge-shaped multi-layer elastic ring 2 and the wedge-shaped middle elastic piece 3 can be conveniently moved, the sides of the wedge-shaped end face elastic pieces 1, which are far away from each other, are all plane-shaped, the sides of the wedge-shaped end face elastic pieces 1, which are close to each other, are multi-layer wedge-shaped conical surfaces so that the wedge-shaped multi-layer elastic ring 2 can be conveniently pressed downwards, the wedge-shaped multi-layer elastic rings 2 are of multi-layer concentric separation structures, gaps are arranged between the adjacent layers, conical surfaces with the same inclination are arranged on the upper surface and the lower surface of each layer of the wedge-shaped multi-layer elastic ring 2, the slope of each outer layer conical surface of the wedge-type multi-layer elastic ring 2 is smaller than that of the adjacent inner layer conical surface, so that when the wedge-type multi-layer elastic ring 2 stretches outwards, the wedge-type multi-layer elastic ring has the same unit circumference elongation, the material utilization rate is improved, the multi-layer wedge-type conical surfaces of the wedge-type end face elastic sheet 1 correspond to each layer conical surface of one side of the wedge-type multi-layer elastic ring 2 one by one, the multi-layer wedge-type conical surfaces of the wedge-type end face elastic sheet 1 correspond to each layer conical surface of the wedge-type multi-layer elastic ring 2 respectively, the wedge-type end face elastic sheet 1 is convenient for the wedge-type end face elastic sheet 1 to be matched with each layer of the wedge-type multi-layer elastic ring 2, the slope of each outer layer conical surface of one side of the wedge-type end face elastic sheet 1 is smaller than that of the adjacent inner layer conical surface, the wedge-type intermediate elastic sheet 3 is of an integral structure, symmetrical multi-layer wedge-type conical surfaces are arranged on two sides of the wedge-type middle elastic sheet 3, the inclination of each outer-layer conical surface of the wedge-type middle elastic sheet 3 is smaller than that of each adjacent inner-layer conical surface, the wedge-type middle elastic sheet 3 is convenient to be matched with each layer of the wedge-type multi-layer elastic ring 2, the multi-layer wedge-type conical surfaces of the wedge-type middle elastic sheet 3 are in one-to-one correspondence with the conical surfaces of one side of each layer of the adjacent two wedge-type multi-layer elastic rings 2, the inclination of each layer of the wedge-type middle elastic sheet 3 and the inclination of each layer of the wedge-type multi-layer elastic ring 2 are respectively identical, and the wedge-type multi-layer elastic ring 2 and the wedge-type middle elastic sheet 3 are convenient to be matched;
referring to fig. 8, the present embodiment is an application mode of the device, after the assembly of the wedge spring assembly is completed, the thimble pin shaft passes through the spring assembly hole to play a limiting role, the threaded pressing block extrudes the upper portion of the spring assembly, the stop block limits the lower portion of the spring assembly, the wedge spring assembly is compressed along with the gradual downward movement of the threaded stop ring, the elastic force is transferred to the stop block, and then transferred to other key structures of the top needle, the application and adjustment of the thimble jacking force are realized, the wedge spring is mainly used for replacing the disc spring to provide the thimble internal pressure, and the wedge spring has the characteristics of linear high rigidity, high unit compression and multilayer uniform deformation, so compared with the disc spring, the wedge spring assembly has higher energy storage density, and is more suitable for developing the thimble with high bearing capacity, small size and high adjustment precision.
Working principle: when the device is used, for convenience of description, please refer to the relative position shown in fig. 2, when pressure is applied externally, the upper wedge-shaped end face elastic piece 1 is regarded as a movable part, and the lower wedge-shaped end face elastic piece 1 is regarded as a fixed part;
when the plane side of the wedge-type end face elastic sheet 1 at the upper part is subjected to external pressure to move downwards, the wedge-type multi-layer elastic ring 2 matched with the wedge-type end face elastic sheet is extruded, the upper conical surfaces of the layers of the wedge-type multi-layer elastic ring 2 are matched with the lower conical surfaces of the wedge-type end face elastic sheet 1 in a one-to-one correspondence manner, meanwhile, the lower conical surfaces of the layers of the wedge-type multi-layer elastic ring 2 are matched with the upper conical surfaces of the wedge-type middle elastic sheet 3 adjacent to the lower part in a one-to-one correspondence manner, so that the layers of the wedge-type multi-layer elastic ring 2 are simultaneously expanded outwards under the combined action of horizontal components stressed by the upper conical surface and the lower conical surface, the layers of the wedge-type multi-layer elastic ring 2 are uniformly stretched, the circumference is increased, the compression elastic force is generated, and in the process, the pressure stressed by the layers of the wedge-type multi-layer elastic ring 2 is equal to the external pressure on the plane side of the wedge-type end face elastic sheet 1 at the upper part, so that the horizontal components stressed by the layers of the wedge-type multi-layer elastic ring 2 are directly proportional to the external pressure on the plane side of the wedge-type end face elastic sheet 1 at the upper part, and the outward expansion amounts of the layers of the wedge-type multi-layer elastic ring 2 are respectively linearly proportional to the downward compression rigidity of the wedge-type end face elastic sheet 1 at the whole;
on the other hand, because the taper angles of the taper surfaces of the layers of the wedge-type multilayer elastic ring 2 are different, when the wedge-type end face elastic sheet 1 at the upper part moves downwards for a certain distance, the outward expansion amounts of the layers of the wedge-type multilayer elastic ring 2 are different, and according to the analysis of the inclined plane matching relation, the smaller the taper angle is, the larger the expansion amount is, because the taper angle of the outer layer taper surface of the wedge-type multilayer elastic ring 2 is smaller than the taper angle of the adjacent inner layer taper surface, the larger the expansion amount of the outer layer is, namely the larger the increase amount of the outer layer circumference is, and because the outer layer circumference is larger than the inner layer, the appropriate taper ratio can lead the increase amount (strain) of the inner layer circumference unit and the outer layer circumference unit to be equal, so that the inner layer stress and the outer layer stress are the same, the structure theory is simultaneously broken, and the material deformation utilization is maximized, the short plate effect is overcome, and the bearing capacity is stronger;
in addition, if the integral rigidity is required to be increased, the integral height is not changed in the process by increasing the number of layers of the wedge-type multilayer elastic ring 2, if the number of layers reaches the upper limit, the larger linear rigidity can be obtained by selecting the appropriate small taper slope, or the cross section area of each layer is increased by appropriately increasing the thickness and the height of each layer, so that the purpose of increasing the rigidity is realized, the wedge-type multilayer structure can carry out parallel adjustment of the rigidity under the condition of changing or slightly changing the axial dimension height, and is more convenient and has stronger applicability in a narrow space, and on the other hand, the wedge-type elastic structure is simple in structure and easy to realize product serialization by utilizing the bevel matching principle.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (3)
1. The linear high-rigidity wedge spring assembly for the thimble is characterized by comprising wedge-type end face elastic pieces (1), wherein two groups of wedge-type end face elastic pieces (1) are arranged, wedge-type multi-layer elastic rings (2) are uniformly arranged between the wedge-type end face elastic pieces (1), wedge-type middle elastic pieces (3) are uniformly arranged between the wedge-type end face elastic pieces (1), the wedge-type multi-layer elastic rings (2) are all arranged between the wedge-type middle elastic pieces (3), one side of one group of the wedge-type end face elastic pieces (1) is provided with a pre-tightening hollow bolt (5), one side of the other group of the wedge-type end face elastic pieces (1) is provided with a pre-tightening nut (4), one end of the pre-tightening hollow bolt (5) penetrates through the wedge-type end face elastic pieces (1), the wedge-type multi-layer elastic rings (2) and the wedge-type middle elastic pieces (3), and one end of the pre-tightening hollow bolt (5) is connected with the pre-tightening nut (4) through threads;
the wedge-shaped end face elastic sheets (1) are used in pairs, and the inclination of each outer conical surface on one side of the multilayer wedge-shaped conical surface of each wedge-shaped end face elastic sheet (1) is smaller than that of the adjacent inner conical surface;
the wedge-type multi-layer elastic ring (2) is of a multi-layer concentric separation structure, gaps are arranged between adjacent layers, conical surfaces with the same inclination are arranged on the upper surface and the lower surface of each layer of the wedge-type multi-layer elastic ring (2), and the inclination of each outer-layer conical surface of the wedge-type multi-layer elastic ring (2) is smaller than that of each adjacent inner-layer conical surface;
the wedge-shaped middle elastic piece (3) is of an integrated structure, symmetrical multi-layer wedge-shaped conical surfaces are arranged on two sides of the wedge-shaped middle elastic piece (3), and the inclination of each outer-layer conical surface of the wedge-shaped middle elastic piece (3) is smaller than that of the adjacent inner-layer conical surface;
the multi-layer wedge-shaped conical surfaces of the wedge-shaped end surface elastic sheet (1) correspond to the conical surfaces of one side of each layer of the wedge-shaped multi-layer elastic ring (2), and the inclination of the multi-layer wedge-shaped conical surfaces of the wedge-shaped end surface elastic sheet (1) is the same as the inclination of the matched conical surfaces of each layer of the wedge-shaped multi-layer elastic ring (2);
the multi-layer wedge type conical surfaces of the wedge type middle elastic sheet (3) are in one-to-one correspondence with the conical surfaces of one side of each layer of the adjacent two wedge type multi-layer elastic rings (2), and the inclination of the multi-layer wedge type conical surfaces of the wedge type middle elastic sheet (3) is the same as that of the matched conical surfaces of each layer of the wedge type multi-layer elastic rings (2).
2. The linear high stiffness wedge spring assembly for a thimble according to claim 1, wherein: the sides of the wedge-shaped end face elastic pieces (1) which are far away from each other are all planar, and the sides of the wedge-shaped end face elastic pieces (1) which are close to each other are all multi-layer wedge-shaped conical surfaces.
3. The linear high stiffness wedge spring assembly for a thimble according to claim 1, wherein: the screw thread cylindrical surface of the pre-tightening hollow bolt (5) is in extrusion contact fit with the adjacent holes of the wedge-shaped end face elastic piece (1), the wedge-shaped multilayer elastic ring (2) and the wedge-shaped middle elastic piece (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211710534.4A CN115978118B (en) | 2022-12-29 | 2022-12-29 | Linear high-rigidity wedge spring assembly for thimble |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211710534.4A CN115978118B (en) | 2022-12-29 | 2022-12-29 | Linear high-rigidity wedge spring assembly for thimble |
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| CN115978118A CN115978118A (en) | 2023-04-18 |
| CN115978118B true CN115978118B (en) | 2023-08-29 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115978118A (en) | 2023-04-18 |
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