Self-adapting locking piece and quick locking structure

Abstract

The utility model discloses a kind of self-adapting locking piece and quick locking structure, including connecting shaft, counterweight and self-adapting locking piece;Limiting ring is equipped on connecting shaft, counterweight is set on connecting shaft, and the bottom of counterweight is passed through limiting ring, self-adapting locking piece is set on the connecting shaft of counterweight top, and it is used for the top of counterweight limiting.This utility model is cooperated by setting top self-adapting locking piece and bottom limiting ring, realizes the quick locking and position adjustment of counterweight in the case where fixed structure is not needed to disassemble, with the advantages of easy operation, save assembly time and without disassembling can adjust counterweight position.

Description

Technical Field

[0001] This application relates to the field of mechanical connection structure technology, and more specifically, to an adaptive fast locking structure and its connecting shaft, counterweight, and adaptive locking component. Background Technology

[0002] When existing counterweights are mounted on connecting shafts, fixed limiting structures are usually required at both the top and bottom of the counterweights. This design presents significant operational inconvenience.

[0003] Traditional limiting methods often require additional fasteners or complex assembly processes, which not only increases assembly time, but also requires disassembling the limiting structure before adjusting the position of the counterweight, and then reinstalling and fixing it after adjustment. The whole process is time-consuming and labor-intensive.

[0004] The drawbacks of this fixed limiting structure are even more apparent in situations where the position of the counterweight needs to be frequently adjusted. Furthermore, traditional limiting structures also suffer from high installation precision requirements and limited operating space, causing numerous inconveniences in practical applications.

[0005] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0006] The purpose of this invention is to provide an adaptive locking component and a quick locking structure, which has the advantages of simple operation, saving assembly time, and allowing adjustment of the counterweight position without disassembly.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] An adaptive locking element includes a wire ring arranged in a spiral structure and matching the shape of a connecting shaft; a handle is provided at the top and bottom of the wire ring, and the wire ring expands its size by pushing the handle inward.

[0009] An adaptive fast locking structure, employing the aforementioned adaptive locking component, further includes a connecting shaft and a counterweight;

[0010] The connecting shaft is provided with a limiting ring, the counterweight is sleeved on the connecting shaft, and the bottom of the counterweight passes through the limiting ring. An adaptive locking component is provided on the connecting shaft at the top of the counterweight, which is used to limit the top of the counterweight.

[0011] Furthermore, the connecting shaft is provided with a bushing, the bottom of which is limited by a limiting ring, and the inside of the bushing is provided with several keys. The top of the bushing is provided with an end cap, and the end cap is provided with several keyways that cooperate with the keys.

[0012] Furthermore, the counterweight includes several counterweight units of different sizes arranged in concentric circles, and a shaft hole is provided in the middle of the counterweight unit. The counterweight is sleeved on the connecting shaft through the shaft hole.

[0013] In summary, this utility model has the following beneficial effects:

[0014] By setting a top adaptive locking component in conjunction with a bottom limiting ring, the counterweight can be quickly locked and its position adjusted without disassembling the fixed structure. This has the advantages of simple operation, saving assembly time, and adjusting the position of the counterweight without disassembly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the adaptive fast locking structure described in this utility model.

[0016] Figure 2 This is a schematic diagram of the connecting shaft described in this utility model.

[0017] Figure 3 This is a schematic diagram of the counterweight block described in this utility model.

[0018] Figure 4 This is a schematic diagram of the adaptive locking component described in this utility model.

[0019] Figure 5 This is a schematic diagram of the connecting shaft and adaptive locking component described in this utility model. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with the illustrations and specific embodiments.

[0021] In existing technologies, the installation of counterweights requires a double-limiting structure at the top and bottom, and traditional methods use rigid limiting components for fixation. This structure requires adjusting the positions of the upper and lower limiting devices separately, and the installation height of the limiting components needs to be repeatedly calibrated during operation, resulting in a complex and time-consuming assembly process. For example, in the dynamic balancing and debugging of rotating machinery, operators need to carry multiple tools to double-fix the counterweights, which can easily affect assembly efficiency due to limited operating space.

[0022] To address the aforementioned issues, it was found that the core contradiction of the traditional double-limiting structure lies in the adjustment method of the top limiting device. Analysis of the force characteristics of the counterweight revealed that the bottom limiting point, as a fundamental support point, requires stability, while the top limiting point only needs to provide axial constraint. Based on this, it is proposed to improve the top limiting point into a structure with elastic deformation capability, utilizing the material's own restoring force to form constraint, thereby eliminating the positioning and adjustment steps of the traditional rigid limiting mechanism.

[0023] See Figures 1 to 5 This application proposes a quick-locking structure including a connecting shaft 1, a counterweight 2, and an adaptive locking element 3. A limiting ring 11 is provided on the connecting shaft 1, the counterweight 2 is sleeved on the connecting shaft 1 and its bottom is positioned by the limiting ring 11, and the adaptive locking element 3 is provided on the connecting shaft 1 at the top of the counterweight 2 to limit the top.

[0024] The limiting ring 11 is an annular protrusion fixed at a specific position on the connecting shaft 1, used to provide an axial positioning reference for the counterweight 2. The counterweight 2 is a metal component with mass distribution. The adaptive locking element 3 is a clamping device with elastic deformation capability, specifically a spiral structure made of spring steel wire, which forms a frictional fixation with the connecting shaft 1 through radial contraction force.

[0025] Specifically, when the counterweight 2 is inserted along the connecting shaft 1, its bottom directly abuts against the limiting ring 11 to complete the initial positioning. At this time, the operator only needs to push the adaptive locking member 3 to the top position of the counterweight 2. Under the action of elastic restoring force, the locking member automatically hugs the surface of the connecting shaft 1, forming an axial constraint on the top of the counterweight 2.

[0026] Compared with existing technologies, traditional solutions require two rigid limiting rings 11 on the connecting shaft 1, and the distance between the two needs to be adjusted synchronously during operation. In contrast, this solution replaces the top rigid limit with an elastic locking component, simplifying the original two positioning operations into a single positioning action, while eliminating assembly interference problems caused by the spacing error of the limiting rings 11.

[0027] Through the above technical solution, this application achieves rapid positioning and installation of the counterweight 2. During operation, only a single pressing action is required to complete the top limiting action, effectively reducing the complexity of the assembly process. The elastic locking component, while ensuring axial constraint force, allows the counterweight 2 to automatically adjust the contact pressure when it undergoes slight displacement under vibration, avoiding stress concentration phenomena that may occur with traditional rigid connections.

[0028] This application further proposes that the connecting shaft 1 is provided with a bushing 12, the bottom of the bushing 12 is limited by a limiting ring 11, the bushing 12 is provided with a number of keys 13 inside, the bushing 12 is provided with an end cap 14 at the top, and the end cap 14 is provided with a number of keyways 15 that cooperate with the keys 13.

[0029] The bushing 12 is a cylindrical component fitted over the connecting shaft 1, providing a mounting base for the counterweight 2 and axially limiting its movement. The limiting ring 11 is an annular protrusion fixed to the connecting shaft 1, restricting the bushing 12 from moving downwards along the connecting shaft 1. The key 13 is a protruding structure on the inner wall of the bushing 12, forming a circumferential constraint with the keyway 15 of the end cap 14. The end cap 14 is a disc-shaped component covering the top of the bushing 12, sealing the top of the bushing 12 and supporting the keyway 15. The keyway 15 is a groove formed on the end cap 14, which can be a groove with a shape complementary to the key 13, for engagement with the key.

[0030] Specifically, the bushing 12 is axially positioned by the bottom limiting ring 11 to prevent downward displacement during assembly. The key 13 on the inner wall of the bushing 12 and the keyway 15 of the end cover 14 form a geometric interlock. When the end cover 14 is installed on top of the bushing 12, the key 13 is embedded in the keyway 15, forming a circumferential constraint to prevent relative rotation between the bushing 12 and the end cover 14. The end cover 14 forms a closed structure by covering the top of the bushing 12, ensuring a stable mating relationship between the key 13 and the keyway 15.

[0031] This application further proposes that the counterweight 2 includes multiple counterweight units 21 of different sizes arranged in concentric circles, and a shaft hole 22 is provided in the middle position of the counterweight unit 21, and the counterweight 2 is sleeved on the connecting shaft 1 through the shaft hole 22.

[0032] The counterweight units 21, arranged concentrically of different sizes, refer to multiple annular metal blocks with varying diameters. This feature eliminates eccentric loads through geometrical symmetry. The shaft hole 22 is a through hole penetrating the central region of the counterweight unit 21. Specifically, it can be achieved by machining a cylindrical channel that matches the outer diameter of the connecting shaft 1 using a CNC machine tool. This feature reduces positioning errors by unifying the assembly datum.

[0033] Specifically, the counterweight 2 is designed as multiple counterweight units 21 of different sizes, which are concentrically stacked around the connecting shaft 1 as the central axis. When all the counterweight units 21 are inserted into the connecting shaft 1 through the shaft holes 22, their concentric circular layout automatically aligns the center of gravity of each unit with the axial direction, eliminating the need for additional adjustment of the relative angles between the units. Units with different outer diameters form a stepped structure when stacked axially, and the total mass can be adjusted by changing the number of units or the combination method. All units are axially fixed only by the self-adaptive locking member 3 at the top, and the bottom is unidirectionally constrained by the limiting ring 11.

[0034] Through the above technical solution, this application effectively solves the operational complexity of repeatedly adjusting the limiting parts during the installation of the counterweight block 2. Automatic centering during assembly is achieved through the concentrically distributed counterweight units 21. The modular combination of units of different sizes simplifies the counterweight adjustment process. The single shaft hole 22 structure allows all units to be installed and positioned at one time.

[0035] This application further proposes an adaptive locking member 3 including a wire ring 31, which is arranged in a spiral structure and matches the shape of the connecting shaft 1; a handle 32 is provided at the top and bottom of the wire ring 31 respectively, and the wire ring 31 expands its size by pushing the handle 32 inward.

[0036] The wire ring 31 is a ring-shaped component made of an elastic material, specifically spring steel or shape memory alloy. Its spiral structure allows for uniform deformation under stress. This structure enhances locking stability by creating multi-point friction with the connecting shaft 1 through a continuous circumferential contact surface. The handle 32 refers to the operating components located at the top and bottom of the wire ring 31. Their symmetrical arrangement ensures symmetrical deformation of the wire ring 31 under pressure, preventing skewing caused by unilateral force application.

[0037] Specifically, when the locking element needs to be adjusted, pushing the handles 32 inward causes the wire ring 31 to elastically expand, increasing its inner diameter and thus relieving friction with the connecting shaft 1. After the locking element slides along the connecting shaft 1 to the target position, releasing the handles 32 allows the wire ring 31 to elastically return to its original spiral shape, re-establishing tight contact with the connecting shaft 1 through radial contraction force. The spiral structure generates a uniform stress distribution during expansion, avoiding localized plastic deformation. Simultaneously, upon returning to its original shape, the circumferential contact surface forms a continuous seal, preventing axial displacement of the counterweight 2.

[0038] Through the above technical solution, this application realizes the rapid position adjustment and automatic locking of the top limiting structure of the counterweight 2. During operation, only the handle 32 needs to be pushed to release the locking state. After releasing, the locking function is automatically restored, eliminating the cumbersome process of the traditional double limiting structure that requires separate operation. At the same time, the continuous contact surface of the spiral steel wire ring 31 improves the locking stability and prevents the counterweight 2 from being displaced in a vibration environment.

[0039] In this document, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of clarifying the technical solution and for the convenience of description, and therefore should not be construed as limiting the present invention.

[0040] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adaptive locking element, characterized in that, Includes a wire ring (31), which is arranged in a spiral structure and matches the shape of the connecting shaft (1); a handle (32) is provided at the top and bottom of the wire ring (31), and the wire ring (31) expands its size by pushing the handle (32) inward.

2. An adaptive fast locking structure, employing the adaptive locking element as described in claim 1, characterized in that, It also includes a connecting shaft (1) and a counterweight (2); The connecting shaft (1) is provided with a limiting ring (11), the counterweight (2) is sleeved on the connecting shaft (1), and the bottom of the counterweight (2) passes through the limiting ring (11). The adaptive locking member (3) is set on the connecting shaft (1) at the top of the counterweight (2), and it is used to limit the top of the counterweight (2).

3. The adaptive fast locking structure according to claim 2, characterized in that, The connecting shaft (1) is provided with a bushing (12), the bottom of the bushing (12) is limited by a limiting ring (11), the bushing (12) is provided with several keys (13) inside, the bushing (12) is provided with an end cap (14) at the top of the bushing (12), and the end cap (14) is provided with several keyways (15) that cooperate with the keys (13).

4. The adaptive fast locking structure according to claim 2, characterized in that, The counterweight (2) includes several counterweight units (21) of different sizes arranged in concentric circles. A shaft hole (22) is provided in the middle of the counterweight unit (21), and the counterweight (2) is sleeved on the connecting shaft (1) through the shaft hole (22).

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