Shaft sleeve type vibration isolator self-locking limiting connecting device
Through the self-locking limit connection structure between the sleeve and the baffle, the problems of difficulty in disassembly and insecure in the sleeve are solved, and simple installation and repeated disassembly are achieved, ensuring the consistency of the performance of the vibration isolator.
Patent Information
- Application Number
- CN202422584122.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-25
AI Technical Summary
The connection method of existing sleeve vibration isolators can easily lead to difficulty in disassembly, and the connection setting bolts need to be removed during on-site installation, which increases the unsafe hazards in the equipment installation process.
The self-locking limit structure is adopted in which the shaft sleeve and the baffle can be detachably connected through the clamping ring, and the baffle ring groove is combined with the vibration-absorbing pad to achieve vibration damping and support of the equipment, and the self-locking connection is achieved through the expansion and contraction of the clamping ring.
It realizes simple installation and disassembly of the vibration isolator, avoids the damage to the equipment surface and the unsafe hazards during the installation process, and ensures the structural consistency and buffering performance of the vibration isolator.
Smart Images
Figure CN223136821U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of vibration isolator limit connection, and particularly relates to a self-locking limit connection device for a bushing-type vibration isolator. Background Art
[0002] With the rapid development of aviation equipment, vibration isolation devices are developing towards the direction of being light, small and lightweight, and bushing-type vibration isolators have been widely used. The bushing and the retaining plate of the bushing-type vibration isolator are two separate bodies, and the common connection forms include riveting, screwing, etc. The vibration isolator is often connected to the lug of the equipment to be vibration-damped as a finished product for delivery. If the riveting method is used to integrate the bushing and the retaining plate, other tools are needed to damage the riveting part of the bushing, and the disassembly difficulty is relatively large. There may be surface damage to the equipment during the disassembly process; if bolts and nuts are used to connect them into one body, when the product is installed on site, the bolts and nuts used for connecting and shaping the vibration isolator need to be removed before installation. At this time, the bolts and nuts for connecting and shaping are additional redundant objects, and the equipment needs to be inspected for redundant objects after installation, which increases the potential safety hazards during the equipment installation process.
[0003] Therefore, it is desirable to have a technical solution to overcome or at least mitigate at least one defect of the prior art. Summary of the Utility Model
[0004] The purpose of this application is to provide a self-locking limit connection device for a bushing-type vibration isolator to solve or mitigate at least one problem in the background art.
[0005] The technical solution of this application is: a self-locking limit connection device for a bushing-type vibration isolator, comprising:
[0006] A bushing, the bushing includes a hollow main shaft and a limit flange located on one side of the hollow main shaft. An outer surface of the non-limit flange side of the hollow main shaft is provided with a main shaft ring groove, and a stepped limit end face is provided on the outer surface of the hollow main shaft near the main shaft ring groove;
[0007] A retaining plate, the retaining plate is provided with a retaining plate ring groove, and a snap ring arranged in the retaining plate ring groove and the main shaft ring groove can detachably connect the bushing and the retaining plate into one body;
[0008] Vibration damping pads, there are two vibration damping pads, which are arranged between the bushing and the retaining plate and in the installation ear of the equipment to be vibration-damped. Bolts for fixing the equipment to be vibration-damped pass through the bushing and are connected to the supporting structure, and the vibration damping and support of the equipment to be vibration-damped are realized through the vibration damping pads.
[0009] In an alternative embodiment of this application, the diameter of the stepped limit end face is smaller than the outer diameter of the hollow main shaft.
[0010] In an alternative embodiment of this application, an inlet inclined end face is provided at an end of the main shaft ring groove on the non-limit flange side.
[0011] In an alternative embodiment of the present application, the main shaft annular groove is a semi-circular groove.
[0012] In an alternative embodiment of the present application, the retaining ring groove is a U-shaped groove.
[0013] In an alternative embodiment of the present application, the outer diameter of the retaining ring is equal to the outer diameter of the limiting flange and is greater than the size of the mounting hole of the mounting ear of the equipment to be vibration-damped.
[0014] In an alternative embodiment of the present application, the vibration damping pad is made of an elastic material with vibration damping function, and the elastic material includes rubber material and resin material.
[0015] In an alternative embodiment of the present application, the snap ring is an open expansion ring.
[0016] In an alternative embodiment of the present application, the diameter of the snap ring in the unloaded state is equal to the inner diameter of the retaining ring.
[0017] The present application effectively solves the need for limited connection and consistent connection function of the sleeve-type vibration isolator. By adopting the design method of the expansion ring, self-locking connection can be realized; by adopting the structural form of the combination of the retaining ring groove and the main shaft annular groove, the installation and disassembly are simple and convenient, unrestricted, and can be disassembled and assembled repeatedly for many times; by using the limiting end face of the sleeve, the assembly height of the vibration isolator can be limited, ensuring the consistency of the structure and vibration isolation and buffering performance of the vibration isolator. Brief Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions provided by the present application, the drawings will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application.
[0019] Figure 1 Schematic diagram of the self-locking limit connection device of the sleeve-type vibration isolator of the present utility model.
[0020] Figure 2 Schematic sectional view of the self-locking limit connection device of the sleeve-type vibration isolator of the present utility model.
[0021] Figure 3 Schematic diagram of the expansion ring of the self-locking limit connection device of the sleeve-type vibration isolator of the present utility model.
[0022] Figure 4 Schematic diagram of the retaining ring of the self-locking limit connection device of the sleeve-type vibration isolator of the present utility model.
[0023] Figure 5 Schematic diagram of the sleeve of the self-locking limit connection device of the sleeve-type vibration isolator of the present utility model.
[0024] Figure 6Schematic diagram of the retaining piece with the expansion ring installed for the self-locking limit connection device of the bushing type vibration isolator of the present utility model.
[0025] Reference numerals:
[0026] 1 - Bushing
[0027] 11 - Hollow main shaft
[0028] 12 - Limit flange
[0029] 13 - Main shaft ring groove
[0030] 14 - Step limit end face
[0031] 15 - Inlet bevel end face
[0032] 2 - Retaining piece
[0033] 21 - Retaining piece ring groove
[0034] 3 - Vibration damping pad
[0035] 4 - Snap ring
[0036] 5 - Mounting ear of the equipment to be vibration-damped Detailed implementation manners
[0037] To make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings in the embodiments of this application.
[0038] This application provides a self-locking limit connection device for a bushing type vibration isolator, whose self-locking connection structure is simple, easy to implement, simple to install, unrestricted, and can achieve disassembly operations without damage and without the aid of external tools.
[0039] Figures 1 to 6 As shown, the self-locking limit connection device for a bushing type vibration isolator provided by this application includes a bushing 1, a retaining piece 2, a vibration damping pad 3 and a snap ring 4.
[0040] The bushing 1 includes a hollow main shaft 11 and a limit flange 12 located at one end of the hollow main shaft 11. On the outer surface of the non-limit flange side of the hollow main shaft 11, there is a main shaft ring groove 13, and at the edge position close to the main shaft ring groove 13, there is a step limit end face 14 with a diameter slightly smaller than the outer diameter of the hollow main shaft 11. In the preferred embodiment of this application, at the end of the non-limit flange side of the main shaft ring groove 13, there is an inlet bevel end face 15 for the installation of the retaining piece 2.
[0041] The baffle 2 is a sheet-like circular ring structure, and its upper and lower end faces are flat. A baffle ring groove 21 is provided on the inner diameter of the baffle 2. In a preferred embodiment of the present application, the baffle ring groove 21 is a U-shaped groove, and the spindle ring groove 13 adapted thereto is a semi-circular groove. The depth of the U-shaped groove is greater than that of the semi-circular groove. The baffle 2 is installed on the non-limiting flange side of the bushing 1, and it is detachably connected to the bushing 1 by a snap ring 4 to form an integral body, so as to form a limiting space between the baffle 2 and the limiting flange 12. In some embodiments of the present application, the outer diameter dimension of the baffle 2 is equal to the outer diameter dimension of the limiting flange 12 and is greater than the mounting hole dimension of the mounting ear 5 of the equipment to be vibration-damped.
[0042] The vibration damping pad 3 is made of an elastic material with vibration damping function, such as rubber material or resin material, etc. It can be understood that the vibration damping pad 3 can also be an elastic material or component of other materials with the same effect, such as a compression spring.
[0043] There are usually two vibration damping pads 3, which are installed in the limiting space formed by the bushing 1 and the baffle 2, and the mounting ear 5 of the equipment to be vibration-damped is installed on the vibration damping pad 3 to achieve vibration damping.
[0044] The snap ring 4 is an open expansion ring. When the snap ring 4 is compressed radially inward, the outer diameter of the snap ring 4 decreases. The snap ring 4 is assembled in the baffle ring groove 21 of the baffle 2 to form a combined baffle with a self-locking function. The diameter of the snap ring 4 in the unloaded state is approximately the inner diameter dimension of the baffle 2.
[0045] The use process of the self-locking and limiting connection device of the bushing-type vibration isolator of the present application is as follows:
[0046] 1) First, compress the snap ring 4 and install it into the baffle ring groove 21 of the baffle 2 to form a combined baffle with a self-locking function. The hollow spindle 11 of the bushing 1 passes through the vibration damping pad 3, the mounting ear 5 of the equipment to be vibration-damped, the vibration damping pad 3 and the combined baffle from bottom to top in sequence, so that the inner ring surface of the snap ring 4 of the combined baffle aligns with the guiding inclined end face 15 of the bushing 1. After pressing down, the snap ring 4 expands outward along the baffle ring groove 21 of the baffle 2. When the lower plane of the baffle 2 contacts the step limiting end face 14 of the bushing 1, the baffle ring groove 21 of the baffle 2 and the spindle ring groove 13 of the bushing 1 form an integral annular ring. The snap ring 4 contracts radially inward and returns to its original state. At this time, the inner ring surface of the snap ring 4 is stuck in the spindle ring groove 13 of the bushing 1, and the outer ring surface of the snap ring 4 is stuck in the baffle ring groove 21 of the baffle 2. The baffle 2 and the bushing 1 are connected into an integral body, so that the vibration isolator is assembled with the mounting ear 5 of the equipment to be vibration-damped. The vibration damping pad 3 is installed in the concave circles on the upper and lower two surfaces of the mounting ear 5 of the equipment to be vibration-damped and is in close contact with the concave circles of the mounting ear 5 of the equipment to be vibration-damped. The lower plane of the baffle 2 is in close contact with the surface of the vibration damping pad 3. The mounting bolt used to lock the mounting ear 5 of the equipment to be vibration-damped is directly connected to the bearing structure through the inner circular hole of the hollow spindle 11 of the bushing 1. During the movement process, the vibration damping pad 3 can provide frictional damping, play a role in energy-consuming vibration damping, and at the same time play a supporting role.
[0047] 2) When disassembly is required, push the retaining piece 2 outwards. The lower part of the snap ring 4 is stressed, and the snap ring 4 expands radially outwards towards the retaining ring groove 21 of the retaining piece 2 until the inner ring surface of the snap ring 4 completely exits the main shaft ring groove 13 of the sleeve 1, and the retaining piece 2 is separated from the sleeve 1.
[0048] In this application, by using the expansion and contraction of the snap ring 4, complex operations are not required, the self-locking and limiting function between the retaining piece 2 and the sleeve 1 is achieved, and quick disassembly without damage can also be carried out, which is very convenient to use.
[0049] In this application, the setting position of the stepped limiting end face 14 on the sleeve 1 is set according to the actual height requirement, and the vibration damping pad 3 is pre-pressed and limited through the lower side plane of the retaining piece 2 to ensure the consistency of the vibration isolator performance.
[0050] The self-locking and limiting device of the sleeve-type vibration isolator in this application has a simple structure, is easy to implement, is quick and convenient to disassemble, is not affected by external factors, has a simple structure and principle for the self-locking and limiting function, is convenient to assemble, and is economical, safe and reliable. This device is suitable for the installation of vibration isolators or other connecting devices with the same effect that require integral connection and limiting of the sleeve structure but can still be disassembled at any time. This application effectively solves the need for limiting connection and consistent connection function of the sleeve-type vibration isolator. The vibration isolator self-locking and limiting connection device in this application adopts the design method of an expansion ring to achieve self-locking connection; adopts the structural form of a combination of a retaining ring groove and a main shaft ring groove to achieve simple and convenient installation and disassembly without limitation, and can be disassembled and assembled repeatedly for multiple times; uses the limiting end face of the sleeve to limit the assembly height of the vibration isolator, ensuring the consistency of the structure and vibration isolation and buffering performance of the vibration isolator.
[0051] This application has been successfully applied to the self-locking and limiting connection of vibration isolators in the fields of aviation, aerospace, electronics, ships, etc. The assembly man-hours are shortened by 1 / 3, and phenomena such as misassembly, missing assembly, and damage of the device are avoided, and remarkable effects are achieved in terms of use safety, reliability, and consistency.
[0052] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claimed rights.
Claims
1. A self-locking limit connection device for a bushing type vibration isolator, characterized in that Comprising: A bushing, the bushing includes a hollow main shaft and a limiting flange located on one side of the hollow main shaft. An outer surface of the non-limiting flange side of the hollow main shaft is provided with a main shaft annular groove, and a stepped limiting end face is provided on the outer surface of the hollow main shaft near the main shaft annular groove; A retaining plate, the retaining plate is provided with a retaining plate annular groove, and the bushing and the retaining plate can be detachably connected into one body by a snap ring arranged in the retaining plate annular groove and the main shaft annular groove; Vibration damping pads, there are two vibration damping pads, which are arranged between the bushing and the retaining plate and are arranged in the installation ears of the equipment to be vibration-damped. Bolts for fixing the equipment to be vibration-damped pass through the bushing and are connected to the bearing structure, and the vibration damping and support of the equipment to be vibration-damped are realized through the vibration damping pads.
2. The self-locking limit connection device of the bushing type vibration isolator according to claim 1, characterized in that The diameter of the stepped limiting end face is smaller than the outer diameter of the hollow main shaft.
3. The self-locking limit connection device of the bushing type vibration isolator according to claim 2, characterized in that, An introducing inclined end face is provided at an end of the non-limiting flange side of the main shaft annular groove.
4. The self-locking limit connection device of the bushing type vibration isolator according to claim 1, characterized in that, The main shaft annular groove is a semi-circular groove.
5. The self-locking limit connection device of the bushing-type vibration isolator according to claim 4, characterized in that The retaining plate annular groove is a U-shaped groove.
6. The self-locking limit connection device of the bushing type vibration isolator according to claim 1, characterized in that The outer diameter dimension of the retaining plate is equal to the outer diameter dimension of the limiting flange and is larger than the dimension of the installation hole of the installation ear of the equipment to be vibration-damped.
7. The self-locking limit connection device of the bushing type vibration isolator according to claim 1, characterized in that, The vibration damping pad is made of an elastic material with vibration damping function, and the elastic material includes rubber material and resin material.
8. The self-locking limit connection device of the bushing type vibration isolator according to claim 1, wherein, The snap ring is an open expansion ring.
9. The self-locking limit connection device of the bushing type vibration isolator according to claim 8, characterized in that, The diameter of the snap ring in the non-loaded state is equal to the inner diameter dimension of the retaining plate.