High-fatigue compression spring

Abstract

The utility model relates to the technical field of springs, and discloses a high-fatigue compression spring which comprises a high-manganese steel spring, spring end sleeves are sleeved at two ends of the high-manganese steel spring, and a traction sleeve rod and a traction sleeve are connected between the spring end sleeves. And one end of the traction sleeve rod and one end of the traction sleeve are respectively fixed in the spring end sleeve. The spring is surrounded by the spring end sleeves, the traction sleeves and the traction sleeve rods which are arranged at the two ends of the high-manganese steel spring, the spring end sleeves enable the spring to be conveniently connected to other parts, stress can evenly act on the end portions of the high-manganese steel spring, breakage caused by local stress concentration of the end portions is effectively avoided, and the service life of the high-manganese steel spring is prolonged. The scientific principle of structural mechanics is followed.

Description

Technical Field

[0001] The utility model relates to the technical field of springs, in particular to a high-fatigue compression spring. Background Art

[0002] A spring is an important basic component in mechanical products. There are many types of springs. Classified by shape, there are: helical springs, leaf (plate) springs, disc springs, ring springs, planar (conical) scroll springs, etc.; classified by the loading point, there are: compression springs, tensile springs, torsion springs, etc. The stresses borne by springs include: bending stress, torsional stress, tensile and compressive stress, and combined stress, etc. The failure modes of springs are: fracture, deformation, relaxation, and wear. Among them, the phenomenon of fracture of a spring under cyclic loading is fatigue fracture, which is mostly caused by uneven force of the clamping components at both ends of the spring, resulting in stress concentration at some points of the spring. In the process of compression and stretching of the spring, this will cause the stress concentration point to be overstretched and torn, leading to rapid fatigue fracture at this point. The traditional connecting components provided at both ends of the spring are easily clamped at the end of the spring by cold rolling after being sleeved, which easily causes clamping stress concentration. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: in order to overcome the problems existing above, a high-fatigue compression spring is provided, which solves the above problems.

[0004] The utility model solves its technical problems by adopting the following technical solutions:

[0005] A high-fatigue compression spring includes a high manganese steel spring. Spring end sleeves are sleeved at both ends of the high manganese steel spring. A traction sleeve rod and a traction sleeve are connected between the spring end sleeves, and one ends of the traction sleeve rod and the traction sleeve are respectively fixed in the spring end sleeves.

[0006] Preferably, the end of the traction sleeve rod is provided with a thread for threaded connection with the spring end sleeve.

[0007] Preferably, the end of the traction sleeve is provided with a thread for threaded connection with the spring end sleeve.

[0008] Preferably, a rubber clamping sleeve provided with an annular blind groove is embedded in the spring end sleeve, and the end of the high manganese steel spring is inserted into the rubber clamping sleeve.

[0009] Preferably, lubricating blind holes are arranged at intervals on the inner wall of the annular blind groove for inserting the end of the high manganese steel spring on the rubber clamping sleeve, and lubricating grease is arranged in the lubricating blind holes. In this way, during the telescopic process of the high manganese steel spring, it only receives the axial force of the spring end sleeve. In this way, the end of the high manganese steel spring can effectively avoid stress concentration leading to local fatigue fracture.

[0010] Preferably, a rubidium magnet is provided at the end of the traction sleeve rod, and a rubidium magnet sleeve magnetically attracted to the rubidium magnet is provided at the end of the traction sleeve. After the rubidium magnet sleeve and the rubidium magnet are magnetically attracted, the separation of the two spring end sleeves is avoided, so as to prevent the spring end sleeves from disengaging from the clamping of the high manganese steel spring.

[0011] The advantages and positive effects of the present utility model are as follows: The spring end sleeves, the traction sleeves and the traction sleeve rods provided at both ends of the high manganese steel spring surround the spring. The spring end sleeves facilitate the connection of the spring to other components and can evenly apply stress to the ends of the high manganese steel spring, effectively avoiding fracture caused by local stress concentration at the ends, and following the scientific principle of structural mechanics. Description of the Drawings

[0012] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a schematic structural diagram of the present utility model;

[0015] Figure 3 is Figure 2 an enlarged structural diagram of the spring end sleeve 10 in

[0016] Figure 4 is Figure 1 a structural diagram of the traction sleeve rod 16 and the traction sleeve 15 in Detailed Description of the Embodiments

[0017] The present utility model will now be further described in detail with reference to the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0018] The following further details the embodiments of the present utility model with reference to the drawings:

[0019] As Figures 1-4 shown, a high-fatigue compression spring of the present utility model includes a high manganese steel spring 11. Spring end sleeves 10 are sleeved at both ends of the high manganese steel spring 11. A traction sleeve rod 16 and a traction sleeve 15 are connected between the spring end sleeves 10, and one ends of the traction sleeve rod 16 and the traction sleeve 15 are respectively fixed inside the spring end sleeves 10.

[0020] Preferably, the end of the traction sleeve rod 16 is provided with a thread for threaded connection with the spring end sleeve 10.

[0021] Preferably, the end of the traction sleeve 15 is provided with a thread for threaded connection with the spring end sleeve 10.

[0022] Preferably, a rubber clamping sleeve 12 provided with an annular blind groove is embedded in the spring end sleeve 10, and the end of the high manganese steel spring 11 is inserted into the rubber clamping sleeve 12.

[0023] Preferably, lubricating blind holes 14 are arranged at intervals on the inner wall of the annular blind groove for inserting the end of the high manganese steel spring 11 on the rubber clamping sleeve 12, and lubricating grease is arranged in the lubricating blind holes 14. In this way, only the axial force of the spring end sleeve 10 is applied to the high manganese steel spring 11 during the telescopic process, so that the end of the high manganese steel spring 11 can effectively avoid local fatigue fracture caused by stress concentration.

[0024] Preferably, a rubidium magnet 17 is arranged at the end of the traction sleeve rod 16, and a rubidium magnet sleeve 18 magnetically attracted to the rubidium magnet 17 is arranged at the end of the traction sleeve 15. After the rubidium magnet sleeve 18 and the rubidium magnet 17 are magnetically attracted, they are used to prevent the two spring end sleeves 10 from separating and thus disengaging from the clamping of the high manganese steel spring 11.

[0025] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific embodiments. Any other embodiments obtained by those skilled in the art according to the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A high-fatigue compression spring, characterized in that: It includes a high manganese steel spring (11), and spring end sleeves (10) are sleeved at both ends of the high manganese steel spring (11). A traction sleeve rod (16) and a traction sleeve (15) are connected between the spring end sleeves (10), and one ends of the traction sleeve rod (16) and the traction sleeve (15) are respectively fixed inside the spring end sleeves (10).

2. The high-fatigue compression spring according to claim 1, characterized in that: The end of the traction sleeve rod (16) is provided with threads for threaded connection with the spring end sleeve (10).

3. A high-fatigue compression spring according to claim 2, characterized in that: The end of the traction sleeve (15) is provided with threads for threaded connection with the spring end sleeve (10).

4. A high-fatigue compression spring according to claim 3, characterized in that: A rubber clamping sleeve (12) provided with an annular blind groove is embedded in the spring end sleeve (10), and the end of the high manganese steel spring (11) is inserted into the rubber clamping sleeve (12).

5. A high-fatigue compression spring according to claim 4, characterized in that: Lubricating blind holes (14) are provided at intervals on the inner wall of the annular blind groove for inserting the end of the high manganese steel spring (11) on the rubber clamping sleeve (12), and lubricating grease is provided in the lubricating blind holes (14). In this way, during the telescopic process of the high manganese steel spring (11), it is only subjected to the axial force of the spring end sleeve (10), so that the end of the high manganese steel spring (11) can effectively avoid local fatigue fracture caused by stress concentration.

6. A high-fatigue compression spring according to claim 5, characterized in that: A rubidium magnet (17) is provided at the end of the traction sleeve rod (16), and a rubidium magnet sleeve (18) magnetically attracted to the rubidium magnet (17) is provided at the end of the traction sleeve (15). After the rubidium magnet sleeve (18) and the rubidium magnet (17) are magnetically attracted, they are used to prevent the two spring end sleeves (10) from separating and thus disengaging from clamping the high manganese steel spring (11).

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