High-durability spring

Abstract

The utility model provides a high durability spring which comprises a main spring, a first installation plate and a second installation plate, the first installation plate and the second installation plate are fixedly connected to the two ends of the main spring respectively, two adjusting plates are fixedly connected to the first installation plate, and the two adjusting plates are jointly connected with two locking plates in a sliding mode. The locking plate penetrates through the first mounting plate and the second mounting plate, the locking plate is in sliding connection with the first mounting plate, and the first mounting plate and the second mounting plate are provided with a first channel and a second channel respectively, and the first channel and the second channel are used for movement of the locking plate. According to the high-durability spring, the sliding locking plate is matched with the locking blocks, the slope design of the locking block array and the elastic connection of the multiple sets of auxiliary springs are utilized, multi-stage adjustment of the effective working length of the main spring is achieved, and therefore the elastic coefficient of the whole spring is dynamically changed, and the service life of the spring is prolonged. Stress concentration or redundant deformation caused by fixed rigidity of a traditional spring is avoided, and the fatigue life is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts technology, specifically to a high-durability spring. Background Technology

[0002] As a widely used elastic element in mechanical systems, the durability of springs directly affects the service life and stability of equipment. However, the fixed elastic properties of existing high-durability springs make it difficult to dynamically adjust them according to actual loads, resulting in uneven stress distribution and ultimately affecting the durability limit.

[0003] The spring constant of a traditional spring is usually predetermined by the material properties and structural parameters, and cannot be flexibly adjusted under complex and changing working conditions. For example, when the external load exceeds the design range, the spring may accelerate fatigue due to local stress concentration. When the load is lower than the design value for a long time, the material potential is not fully utilized, resulting in redundant costs.

[0004] Therefore, a high-durability spring is proposed. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the elastic coefficient of existing springs is not easy to adjust, and to provide a high-durability spring.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a high-durability spring, comprising a main spring and a first mounting plate and a second mounting plate respectively fixedly connected to both ends of the main spring. Two adjusting plates are fixedly connected to the first mounting plate, and the two adjusting plates are slidably connected to two locking plates. The locking plates are disposed through the first mounting plate and the second mounting plate, and the locking plates are slidably connected to the first mounting plate. The first mounting plate and the second mounting plate are respectively provided with a first channel and a second channel for the movement of the locking plates. Multiple sets of locking blocks are arranged in an array on the locking plates, and the two locking plates are elastically connected by multiple secondary springs.

[0007] Preferably, the locking block is inclined on the side facing the second channel in the initial state, and the distance between two adjacent sets of locking blocks is greater than the thickness of the second mounting plate.

[0008] Preferably, a connecting plate is fixedly connected to the bottom of both adjustment plates, and a slide bar with a T-shaped cross section is fixedly connected to the opposite sides of both adjustment plates. An active groove for sliding the slide bar is provided at the second channel.

[0009] Preferably, a first slider with a T-shaped cross-section is fixedly connected to the locking plate, and a first groove for sliding the first slider is provided on the first mounting plate.

[0010] Preferably, the locking plate is fixedly connected with a plurality of second sliders with a T-shaped cross section, and the adjusting plate is provided with a plurality of second slide grooves that are respectively adapted to the size of the plurality of second sliders.

[0011] Preferably, the bottoms of the two locking plates are slidably connected to a pull plate.

[0012] Preferably, the cross-section of the second channel is rectangular, and the width of the second channel is adapted to the distance between the two adjusting plates, and the length of the second channel is adapted to the distance between the two locking plates in the initial state.

[0013] Compared with the prior art, this utility model has the following beneficial effects:

[0014] 1. The high-durability spring provided by this utility model achieves multi-level adjustment of the effective working length of the main spring by using the cooperation of the sliding locking plate and the locking block, the inclined surface design of the locking block array and the elastic connection of multiple sets of auxiliary springs, thereby dynamically changing the elastic coefficient of the overall spring. This structure can quickly adapt to different load conditions without disassembling or replacing parts, avoiding stress concentration or redundant deformation caused by the fixed stiffness of traditional springs, and significantly extending fatigue life.

[0015] 2. The inclined surface design and optimized spacing between adjacent locking blocks of the high-durability spring locking block provided by this utility model ensure a smooth transition of the contact surface between the second mounting plate and the locking block during the adjustment process, avoiding rigid impact. At the same time, the matching structure of the T-shaped slider and the slide groove, as well as the bottom sliding connection design of the pull plate, further disperse the load stress, reduce local friction loss, and improve the stability and durability of the overall structure.

[0016] 3. The high-durability spring provided by this utility model has a T-shaped cross-section combination of adjustment plate, connecting plate and slide bar, and a rectangular cross-section matching of the second channel, forming a self-locking guide mechanism to ensure that the locking plate is accurately positioned during sliding adjustment, preventing displacement or jamming. The elastic connection of the secondary spring and the linkage design of the pull plate can maintain the stability of the locking state while realizing the adjustment of the elastic coefficient, avoiding accidental unlocking due to vibration or impact, and is suitable for high-frequency dynamic working conditions. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0019] Figure 2 This is another structural schematic diagram of an embodiment of the present utility model.

[0020] Figure 3 This is an exploded view of the adjusting plate and locking plate according to an embodiment of the present invention.

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0022] Figure 5 This is a cross-sectional schematic diagram of the first mounting plate according to an embodiment of the present invention.

[0023] Figure 6 This is a cross-sectional schematic diagram of an embodiment of the present invention.

[0024] In the picture:

[0025] 1. Main spring; 2. First mounting plate; 21. First channel; 3. Second mounting plate; 31. Second channel; 4. Adjusting plate; 41. Connecting plate; 42. Sliding bar; 43. Movable groove; 5. Locking plate; 51. Locking block; 52. Secondary spring; 53. First slider; 54. First slide groove; 55. Second slider; 56. Second slide groove; 57. Pulling plate. Detailed Implementation

[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] Please see Figure 1-6 .

[0028] This utility model relates to a high-durability spring, comprising a main spring 1 and a first mounting plate 2 and a second mounting plate 3 respectively fixedly connected to both ends of the main spring 1. Two adjusting plates 4 are fixedly connected to the first mounting plate 2, and the two adjusting plates 4 are slidably connected to two locking plates 5. The locking plates 5 pass through the first mounting plate 2 and the second mounting plate 3, and are slidably connected to the first mounting plate 2. The first mounting plate 2 and the second mounting plate 3 respectively have a first channel 21 and a second channel 31 for the movement of the locking plates 5. Multiple sets of locking blocks 51 are arrayed on the locking plates 5, and the two locking plates 5 are connected by... Multiple auxiliary springs 52 are elastically connected. Specifically, the main spring 1 is fixed to the external equipment through the mounting plates at both ends, which can ensure its stability under force. The locking plate 5 passes through the two mounting plates and is slidably connected through the adjusting plate 4. Combined with the elastic constraint of the auxiliary springs 52, a dynamically adjustable locking mechanism is formed. By sliding the locking plate 5, the effective working length of the main spring 1 can be changed, thereby adjusting the overall elastic coefficient. The array-type locking block 51 provides multiple levels of locking positions. Users can flexibly select the position according to the load requirements, avoiding stress concentration or redundant deformation caused by the fixed stiffness of traditional springs, and significantly improving service life.

[0029] Secondly, the locking block 51 is set at an angle on the side facing the second channel 31 in the initial state, and the distance between two adjacent sets of locking blocks 51 is greater than the thickness of the second mounting plate 3. The angled design of the locking block 51 allows the second mounting plate 3 to slide smoothly along the angled surface during adjustment, reducing wear and operating resistance caused by rigid collisions. The distance between adjacent locking blocks 51 is greater than the thickness of the second mounting plate 3, which ensures that the second mounting plate 3 only contacts a single locking block 51 during adjustment, avoiding jamming caused by multiple locking blocks 51 being inserted into the gap at the same time, thus improving the smoothness and reliability of adjustment.

[0030] Furthermore, a connecting plate 41 is fixedly connected to the bottom of both adjusting plates 4. A slide bar 42 with a T-shaped cross section is fixedly connected to the opposite sides of both adjusting plates 4. An active groove 43 for sliding of the slide bar 42 is provided at the second channel 31. The bottoms of the two adjusting plates 4 are rigidly connected by the connecting plate 41, which enhances the overall bending strength of the adjusting plates 4 and prevents the adjusting plates 4 from deforming due to the lateral force when the locking plate 5 slides. The T-shaped slide bar 42 slides in the active groove 43 of the second channel 31. The protruding structure of the T-shaped cross section cooperates with the groove wall to form a limiting guide, preventing the adjusting plates 4 from shifting laterally or detaching during the sliding process, and ensuring the accuracy and stability of the moving trajectory of the locking plate 5.

[0031] In addition, a first slider 53 with a T-shaped cross section is fixedly connected to the locking plate 5, and a first groove 54 for sliding the first slider 53 is provided on the first mounting plate 2. This arrangement can prevent the locking plate 5 from rotating or shifting laterally during the adjustment process.

[0032] In addition, multiple second sliders 55 with T-shaped cross sections are fixedly connected to the locking plate 5. Multiple second slide grooves 56 are provided on the adjusting plate 4, which are adapted to the size of the multiple second sliders 55. The multiple T-shaped second sliders 55 are evenly distributed on both sides of the locking plate 5, and cooperate with the second slide grooves 56 on the adjusting plate 4 to form multi-point guiding constraints, further restricting the sliding freedom of the locking plate 5 and avoiding deflection or jamming caused by single-point force.

[0033] At the same time, the bottom of the two locking plates 5 are slidably connected to a pull plate 57. The pull plate 57 can link the bottom of the two locking plates 5 together, and the user can control the sliding position of the two locking plates 5 synchronously by operating the pull plate 57, simplifying the adjustment operation steps.

[0034] Specifically, the second channel 31 has a rectangular cross-section, and its width is matched with the distance between the two adjusting plates 4. The length of the second channel 31 is matched with the distance between the two locking plates 5 in the initial state. The rectangular cross-section of the second channel 31 can provide a flat sliding contact surface, increase the contact area between the locking plates 5 and the channel wall, and reduce local pressure and wear during sliding. The width of the channel is precisely matched with the distance between the adjusting plates 4 to ensure that the locking plates 5 always remain parallel to the adjusting plates 4 when moving, preventing shaking or displacement caused by excessive gap. In addition, the length of the channel is matched with the initial distance between the locking plates 5, which can provide sufficient sliding stroke for the locking plates 5, meet the needs of multi-level switching, avoid stroke redundancy, and optimize the overall structural compactness.

[0035] Working principle:

[0036] When the high-durability spring is in operation, when an external load is applied to the main spring 1, the main spring 1 transmits elastic deformation force through the first mounting plate 2 and the second mounting plate 3 at both ends. The user drives the two locking plates 5 to slide synchronously along the T-shaped groove on the adjusting plate 4 by operating the pull plate 57 connected at the bottom. This causes the array of locking blocks 51 on the locking plates 5 to move within the second channel 31 of the second mounting plate 3. The inclined surface design of the locking blocks 51 in the initial state allows the second mounting plate 3 to smoothly transition along the inclined surface during the adjustment process. The design that the distance between adjacent locking blocks 51 is greater than the thickness of the second mounting plate 3 ensures that it only engages with a single locking block 51. Thus, by switching the engagement position of the locking blocks 51 with the second mounting plate 3, the effective working length of the main spring 1 can be changed. At this time, the elastic connection of the secondary spring 52 provides the reset tension for the locking plate 5, maintaining the stability of the adjusted locking state. The cooperation guide structure of the T-shaped slider and the slide groove restricts the offset of the locking plate 5. The size adaptation design of the rectangular second channel 31 ensures the accuracy of the sliding trajectory. When unlocking, by squeezing the two ends of the two locking plates 5 to bring them closer to each other, the main spring 1 can be restored to its initial state. Through the above-mentioned linkage adjustment mechanism, the elastic coefficient of the main spring 1 can be dynamically adapted to the load requirements, avoiding fatigue damage caused by stress concentration, while reducing friction loss during the adjustment process, and comprehensively improving the durability and adaptability of the spring.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A high-durability spring, characterized in that: The device includes a main spring (1) and a first mounting plate (2) and a second mounting plate (3) fixedly connected to both ends of the main spring (1). Two adjusting plates (4) are fixedly connected to the first mounting plate (2). The two adjusting plates (4) are slidably connected to two locking plates (5). The locking plates (5) are disposed through the first mounting plate (2) and the second mounting plate (3), and the locking plates (5) are slidably connected to the first mounting plate (2). The first mounting plate (2) and the second mounting plate (3) are respectively provided with a first channel (21) and a second channel (31) for the movement of the locking plates (5). Multiple sets of locking blocks (51) are arranged in an array on the locking plates (5). The two locking plates (5) are elastically connected by multiple secondary springs (52).

2. The high-durability spring as described in claim 1, characterized in that: The locking block (51) is set at an angle on the side facing the second channel (31) in the initial state, and the distance between two adjacent sets of locking blocks (51) is greater than the thickness of the second mounting plate (3).

3. The high-durability spring as described in claim 1, characterized in that: A connecting plate (41) is fixedly connected to the bottom of both adjustment plates (4), and a slide bar (42) with a T-shaped cross section is fixedly connected to the opposite sides of both adjustment plates (4). An active groove (43) for sliding the slide bar (42) is provided at the second channel (31).

4. The high-durability spring as described in claim 1, characterized in that: The locking plate (5) is fixedly connected to a first slider (53) with a T-shaped cross section, and the first mounting plate (2) is provided with a first groove (54) for sliding the first slider (53).

5. The high-durability spring as described in claim 1, characterized in that: The locking plate (5) is fixedly connected with a plurality of second sliders (55) with a T-shaped cross section, and the adjusting plate (4) is provided with a plurality of second grooves (56) that are adapted to the size of the plurality of second sliders (55).

6. The high-durability spring as described in claim 1, characterized in that: The bottom of the two locking plates (5) are slidably connected to a pull plate (57).

7. The high-durability spring as described in claim 1, characterized in that: The cross-section of the second channel (31) is rectangular, and the width of the second channel (31) is adapted to the spacing between the two adjusting plates (4), and the length of the second channel (31) is adapted to the spacing between the two locking plates (5) in the initial state.

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