Lightweight shock absorber

Abstract

The invention discloses a light-weight shock absorber, and belongs to the technical field of shock absorbers. The two ends of the support are provided with bent parts, and an installation cavity is formed in each bent part; the two ends of the central shaft are provided with step structures; the step structure correspondingly penetrates through the mounting cavity and is positioned on the bracket through the positioning assembly; the vibration isolation pieces are correspondingly arranged in all the sets of mounting cavities and arranged on the step structures in a sleeving mode; the ball joint is mounted on the central shaft in a sliding manner; the connecting end of the ball joint has bending dependent variable. According to the structural analysis, the positioning assembly and the support are simplified, and the overall weight is reduced. And meanwhile, the performance is improved, for example, the tightening amount is controlled through an adjusting nut in the positioning assembly, so that adjustment of different rigidity requirements is achieved. An elastic vibration isolation piece net pad is adopted, and hard limiting in the prior art is replaced with flexible applicability limiting. The connecting end of the ball joint has bending dependent variable, so that the displacement required by bending is met, the bending stress is improved, and the service life is prolonged.

Description

Technical Field

[0001] This invention belongs to the technical field of shock absorbers, and in particular relates to a lightweight shock absorber. Background Technology

[0002] Patent CN112727977A, in order to address the technical issues of rotational decoupling and limit angle control in existing vibration isolators, provides a ball-joint type end-face constrained variable damping stiffness vibration isolator, including an arc-shaped bracket, a vertical central shaft disposed within the arc-shaped bracket, vibration isolation components installed at both ends of the arc-shaped bracket, and a connector assembly slidably fitted on the vertical central shaft. The vibration isolation components include elastic limit blocks for convenient decoupling and adjustment. However, the vibration isolator disclosed in patent CN112727977A cannot meet the requirements for bending angle control. Due to the physical properties of its materials, there may be certain limitations on the bending angle. When the vibration isolator needs to withstand a large bending angle in application, it may exceed the material's tolerance range, leading to performance degradation or damage. For vibration isolators of certain specific shapes, such as the JNHQ150*50M20 rubber vibration isolator, its design may be more suitable for certain specific bending angles, rather than all angles. If a bending angle inconsistent with its design is encountered in actual application, it may affect its vibration damping effect.

[0003] Furthermore, experiments revealed that while the vibration isolator disclosed in patent CN112727977A possesses a high capacity to withstand various internal stresses, including tension, compression, shear, and torsion, under certain extreme conditions, such as overload or prolonged operation in harsh environments, it may exceed its stress-bearing capacity, leading to performance degradation or damage. Uneven stress distribution may result in excessive stress concentration in certain localized areas. These stress concentration areas may become potential damage points, affecting the service life and performance of the vibration isolator. Summary of the Invention

[0004] The purpose of this invention is to provide a lightweight shock absorber to solve the problems mentioned in the background art.

[0005] This invention adopts the following technical solution: a lightweight vibration damper, comprising: a bracket with bent portions at both ends, each set of bent portions having an installation cavity; and further comprising:

[0006] A central shaft with stepped structures at both ends; the stepped structures pass through the mounting cavity and are positioned on the bracket by a positioning component; the positioning component is also used to adjust the tightening between the central shaft and the bracket to achieve the release required for lateral impact.

[0007] Vibration isolation components are correspondingly installed in each set of mounting cavities and sleeved on the stepped structure;

[0008] A ball joint is slidably mounted on the central axis; the connecting end of the ball joint has a bending strain.

[0009] In a further embodiment, the central shaft includes: a body, and tapered sections extending axially outward for a predetermined length at both ends of the body; the outer diameter of the tapered sections is smaller than the outer diameter of the central shaft, forming a stepped structure.

[0010] In a further embodiment, the vibration isolation element includes:

[0011] The mesh pad has a predetermined thickness; the mesh pad has a ring structure and is disposed in the mounting cavity.

[0012] In a further embodiment, the ball joint is a screw type, and a bending elastic element is helically installed at its connecting end.

[0013] In a further embodiment, the positioning component includes:

[0014] An adjusting nut is screwed onto the tightening section and located on the outer end face of the bend.

[0015] The upper washer is fitted between the adjusting nut and the bent part;

[0016] The lower shim is fitted between the bent part and the body of the central shaft.

[0017] In a further embodiment, the vibration isolation element further includes:

[0018] The outer disc spring and the inner disc spring are respectively located on the outer and inner sides of the mesh pad.

[0019] In a further embodiment, the bending elastic element includes:

[0020] A sleeve nut, one end of which is screwed onto the ball joint;

[0021] A load-bearing spring, one end of which is embedded in the other end of the sleeve nut;

[0022] A connecting nut, one end of which is connected to the other end of a load-bearing spring.

[0023] In a further embodiment, it also includes a flexible protective ring wrapped around the load-bearing spring.

[0024] In a further embodiment, the mesh is made of at least one of rubber or metal.

[0025] The beneficial effects of this invention are as follows: This invention discloses a lightweight vibration damper. Firstly, from a structural perspective, the positioning component and the support are simplified, reducing the overall weight. At the same time, performance is improved, such as by controlling the tightening amount through the adjusting nut in the positioning component to achieve adjustments for different stiffness requirements.

[0026] Furthermore, the vibration isolation component in this invention uses a mesh pad, replacing the rigid limiting mechanism of the prior art with a flexible and adaptable limiting device. Its limiting range can be adjusted as needed to adapt to workpieces of different sizes, shapes, or processing requirements. It can cope with more complex working environments. Flexible and adaptable limiting devices typically have a more precise triggering mechanism, which can be triggered in advance when the machine tool moves close to the limiting range, thereby more accurately protecting the safety of the machine tool and the workpiece.

[0027] Finally, the ball joint's connecting end has bending strain to meet the displacement required for bending, solving the technical problem of vertical non-decoupling in the prior art, improving bending stress, and increasing service life. Attached Figure Description

[0028] Figure 1 This is a structural diagram of a lightweight vibration damper according to Example 1.

[0029] Figure 2 This is a cross-sectional view of a lightweight vibration damper according to Example 1.

[0030] Figure 3 This is a side view of a lightweight vibration damper according to Example 1.

[0031] Figures 1 to 3 The components are labeled as follows: 1. Bracket; 2. Bending part; 3. Vibration isolation component; 4. Positioning component; 5. Ball joint; 6. Central shaft; 301. Mesh pad; 302. Outer disc spring; 303. Inner disc spring; 401. Adjusting nut; 402. Upper washer; 403. Lower washer; 501. Sleeve nut; 601. Body; 602. Tightening section. Detailed Implementation

[0032] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] To address the multi-directional decoupling and stress requirements of existing technologies and improve service life, this embodiment discloses a lightweight vibration damper, such as... Figure 1As shown, the device includes: a bracket 1 with bent portions 2 at both ends, each set of bent portions 2 having an installation cavity. It also includes: a central shaft 6 with stepped structures at both ends. During installation, the stepped structures pass through the corresponding installation cavities and are positioned on the bracket 1 by a positioning component 4; the positioning component 4 is also used to adjust the tightening between the central shaft 6 and the bracket 1 to achieve the release required for lateral impact. Each set of stepped structures is fitted with a vibration damper 3, which is located within the corresponding installation cavity.

[0035] Correspondingly, a ball joint 5 is slidably mounted on the central shaft 6, enabling multi-directional rotation and decoupling. Simultaneously, to ensure the required decoupling and bending strain in the vertical direction, the connecting end of the ball joint 5 has a bending strain capacity.

[0036] Furthermore, the central shaft 6 includes: a body 601, and a tightening section 602 extending outward along the axial direction at both ends of the body 601 for a predetermined length; the outer diameter of the tightening section 602 is smaller than the outer diameter of the central shaft 6, forming a stepped structure.

[0037] Given that existing hard limiters, due to their rigid structure, are more susceptible to damage upon impact, cannot provide such precise protection, and are difficult to replace. Figure 2 As shown, the vibration isolation member 3 in this embodiment includes a mesh pad 301 with a predetermined thickness. In this embodiment, the mesh pad 301 has a ring structure, is disposed in the mounting cavity, and is configured to be sleeved on the tightening end.

[0038] Correspondingly, the vibration isolation component 3 also includes an outer disc spring 302 and an inner disc spring 303 respectively disposed on the outer and inner sides of the mesh pad 301.

[0039] To accommodate different damping releases, the positioning component 4 in this embodiment is adjustable. Specifically, the positioning component 4 includes an adjusting nut 401 screwed onto the tightening section 602 and located on the outer end face of the bending portion 2. The tightening amount is controlled by adjusting the nut 401. Correspondingly, an upper washer 402 and a lower washer 403 are respectively provided between the adjusting nut 401 and the bending portion 2, and between the bending portion 2 and the body 601 of the central shaft 6. The upper washer 402 and the lower washer 403 can be made of rubber.

[0040] Meanwhile, to meet the vertical decoupling requirements and increase bending stress, the ball joint 5 is a screw type, with a bending elastic element screwed onto its connecting end. The bending elastic element in this embodiment includes: a sleeve nut 501, a load-bearing spring, and a connecting nut. One end of the sleeve nut 501 is screwed onto the ball joint 5; one end of the load-bearing spring is embedded in the other end of the sleeve nut 501; and one end of the connecting nut is connected to the other end of the load-bearing spring. The load-bearing spring in this embodiment is made of an alloy material, such as titanium alloy. This ensures that the elasticity requirement is met while still satisfying the stiffness requirement, and it is lightweight.

[0041] To further prevent dust and protect the load-bearing spring for use in different environments, this embodiment includes a flexible protective ring, such as a rubber ring, wrapped around the load-bearing spring.

[0042] Firstly, from a structural perspective, the positioning component 4 and the bracket 1 have been simplified, reducing the overall weight. At the same time, performance has been improved, such as by controlling the tightening amount through the adjusting nut 401 in the positioning component 4 to achieve adjustments for different stiffness requirements.

[0043] It should be noted that the mesh 301 in this embodiment is made of at least one of rubber or metal. If it is made of metal, it is a metal mesh; if it is made of rubber, it is a rubber mesh. Correspondingly, a metal + rubber mesh can be prepared by interweaving metal and rubber.

[0044] For example, wire mesh mats are made of multiple interwoven metal wires. This weaving structure gives the wire mesh mat a certain degree of flexibility and elasticity, while also ensuring its strength and stability. The mesh size of the wire mesh mat can be adjusted as needed. The mesh size determines the filtration accuracy and load-bearing capacity of the wire mesh mat. Wire mesh mats can be made into various shapes, such as planar, cylindrical, and conical. These shape designs allow the wire mesh mats to adapt to different application scenarios and installation requirements.

[0045] Regardless of the material used, flexible, adaptable limit switches replace the rigid limit switches of existing technologies. Their limiting range can be adjusted as needed to accommodate workpieces of different sizes, shapes, or processing requirements. They can handle more complex working environments; for example, when a machine tool is subjected to external impacts or vibrations, the flexible limit switch can absorb these impacts through its flexible structure, reducing the risk of damage to the machine tool and workpiece. They can quickly switch between different processing tasks without spending a lot of time replacing and adjusting limit switches. Flexible, adaptable limit switches typically have a more precise triggering mechanism, which can trigger in advance when the machine tool moves close to the limiting range, thus more accurately protecting the safety of the machine tool and workpiece.

[0046] Finally, the connecting end of the ball joint 5 has a bending strain to meet the displacement required for bending, solving the technical problem of vertical non-decoupling in the prior art, improving bending stress, and increasing service life. Furthermore, experiments have shown that the vibration damper of this application has a high safety factor, long service life, and a high degree of stress demand response.

Claims

1. A lightweight vibration damper, characterized in that, include: A bracket with bends at both ends, each bend containing a mounting cavity; also includes: A central shaft with stepped structures at both ends; the stepped structures pass through the mounting cavity and are positioned on the bracket by a positioning component; the positioning component is also used to adjust the tightening between the central shaft and the bracket to achieve the release required for lateral impact. Vibration isolation components are correspondingly installed in each set of mounting cavities and sleeved on the stepped structure; A ball joint is slidably mounted on the central axis; the connecting end of the ball joint has a bending strain.

2. The lightweight vibration damper according to claim 1, characterized in that, The central shaft includes: a body, and tightening sections extending outward along the axial direction for a predetermined length at both ends of the body; the outer diameter of the tightening sections is smaller than the outer diameter of the central shaft, forming a stepped structure.

3. A lightweight vibration damper according to claim 1, characterized in that, The vibration isolation component includes: The mesh pad has a predetermined thickness; the mesh pad has a ring structure and is disposed in the mounting cavity.

4. A lightweight vibration damper according to claim 1, characterized in that, The ball joint is a screw type, and a bending elastic element is spirally installed at its connecting end.

5. A lightweight vibration damper according to claim 2, characterized in that, The positioning component includes: An adjusting nut is screwed onto the tightening section and located on the outer end face of the bend. The upper washer is fitted between the adjusting nut and the bent part; The lower shim is fitted between the bent part and the body of the central shaft.

6. A lightweight vibration damper according to claim 3, characterized in that, The vibration isolation component also includes: The outer disc spring and the inner disc spring are respectively located on the outer and inner sides of the mesh pad.

7. A lightweight vibration damper according to claim 4, characterized in that, The bending elastic element includes: A sleeve nut, one end of which is screwed onto the ball joint; A load-bearing spring, one end of which is embedded in the other end of the sleeve nut; A connecting nut, one end of which is connected to the other end of a load-bearing spring.

8. A lightweight vibration damper according to claim 7, characterized in that, Also includes: A flexible protective ring is wrapped around the load-bearing spring.

9. A lightweight vibration damper according to claim 3, characterized in that, The mesh pad is made of at least one of rubber or metal.

Images