Vibration reduction backboard structure for dynamic balance test

Abstract

The utility model provides a vibration reduction backboard structure for dynamic balance test, which comprises a backboard and a vibration reduction mechanism, the vibration reduction mechanism comprises a deformable body and a rotor contact portion, during test, the rotor contact portion is used for abutting against a turbocharger rotor to be tested, and the deformable body is arranged between the backboard and the rotor contact portion. When the back plate vibrates, the vibration of the back plate can be absorbed through the deformation of the deformable body, so that the vibration transmission between the back plate and the to-be-tested turbocharger rotor is reduced, and the influence on the test of the to-be-tested turbocharger rotor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of turbocharging, in particular to a vibration reduction back plate structure for dynamic balance testing. Background Art

[0002] The turbocharger rotor is the core component of the supercharger. The high-speed dynamic balancing test is a test method for testing the imbalance of the turbocharger rotor. According to the test results, the turbocharger rotor can be corrected to reduce the vibration of the turbocharger rotor in actual use and reduce vibration wear. During the test, high-speed dynamic balancing test equipment and test fixtures are required. The high-speed dynamic balancing test equipment is used to fix the turbocharger rotor to be tested and to create airflow. The test fixture is used to evenly apply the airflow to the turbine at one end of the turbocharger rotor to be tested to drive the rotation of the turbocharger rotor to be tested. However, the existing test fixture lacks a better vibration reduction structure, especially a back plate structure. When the test fixture has airflow input, it will generate vibrations itself. These vibrations will be transmitted to the turbocharger rotor to be tested through the back plate structure, thereby affecting the turbocharger rotor to be tested, making the test effect of the high-speed dynamic balancing test equipment poor. Utility Model Content

[0003] The problem to be solved by the utility model is to provide a back plate structure which has less influence on the vibration of a turbocharger rotor to be tested during testing.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is: a vibration-damping backplate structure for dynamic balancing test, comprising a backplate and a vibration reduction mechanism arranged on one side of the backplate; the vibration reduction mechanism comprises a deformable body and a rotor contact portion; the rotor contact portion is used to resist the turbocharger rotor to be tested so as to maintain the test position of the turbocharger rotor to be tested, and the deformable body is arranged between the backplate and the rotor contact portion to reduce the vibration of the backplate transmitted to the rotor contact portion.

[0005] Compared with the prior art, the utility model includes a back plate, a vibration reduction mechanism and a drive bushing, wherein the vibration reduction mechanism includes a deformable body and a rotor contact portion. During testing, the rotor contact portion is used to resist the turbocharger rotor to be tested, and the deformable body is arranged between the back plate and the rotor contact portion. When the back plate vibrates, the vibration of the back plate can be absorbed by the deformation of the deformable body, thereby reducing the vibration transmission between the back plate and the turbocharger rotor to be tested, so as to reduce the impact on the test of the turbocharger rotor to be tested.

[0006] The utility model discloses a vibration-damping back plate structure for dynamic balancing test, wherein the back plate comprises a back plate body and a deformable body limiting structure arranged on one side of the back plate body; one side of the deformable body is against or fixedly connected to the deformable body limiting structure.

[0007] The utility model provides a vibration-damping back plate structure for dynamic balancing test, wherein the other side of the deformable body abuts against or is fixedly connected to the rotor contact portion so as to maintain the position of the rotor contact portion.

[0008] The utility model discloses a vibration-damping back plate structure for a dynamic balancing test, wherein the deformable body is in the shape of a circular ring; the deformable body limiting structure comprises a limiting ring fixedly connected to one side of the back plate body and arranged along the circumference of the back plate body, and a limiting cover plate detachably connected to one side of the back plate body; the limiting ring comprises a limiting inner side surface, and the limiting cover plate comprises a limiting inclined surface; the outer side of the deformable body abuts against the limiting inner side surface and the limiting inclined surface; the rotor contact portion comprises an arc groove arranged on the outer side; the inner side of the deformable body abuts against the arc groove.

[0009] The utility model provides a vibration-damping back plate structure for dynamic balancing test, wherein the rotor contact portion comprises a clamping surface which is arranged on the inner side and connected to the rotor of the turbocharger to be tested.

[0010] The utility model discloses a vibration-damping back plate structure for dynamic balancing test, wherein the back plate body comprises a first channel, and the rotor contact portion comprises a second channel; the first channel and the second channel are interconnected and coaxially arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional schematic diagram of the utility model from a side perspective;

[0012] Figure 2 It is a three-dimensional schematic diagram of the utility model from another side perspective;

[0013] Figure 3 It is a side view schematic diagram of the utility model;

[0014] Figure 4 It is a cross-sectional schematic diagram of the utility model;

[0015] Figure 5 is an enlarged schematic diagram of the vibration reduction mechanism;

[0016] Figure 6 It is a schematic diagram of the use state of the utility model. DETAILED DESCRIPTION

[0017] Before describing in detail any embodiment of the utility model, it should be understood that the utility model is not limited in its application to the construction and arrangement details of the components described below or illustrated in the following figures. The utility model can have other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used here are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and its variations herein is intended to cover the items and their equivalents and additional items displayed below. Unless otherwise specified or limited, the terms "install", "connect", "support" and "couple" and their variations are widely used and cover direct installation and indirect installation, connection, support and connection. In addition, "connect" and "couple" are not limited to physical or mechanical connections or connections.

[0018] Furthermore, on the first aspect, in the disclosure of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second aspect, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0019] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

[0020] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0021] See also Figure 1-6 A vibration-damping back plate structure for a dynamic balancing test is shown, comprising a back plate 1 and a vibration reduction mechanism 2 arranged on one side of the back plate 1; the vibration reduction mechanism 2 comprises a deformable body 21 and a rotor contact portion 22; the rotor contact portion 22 is used to resist against a turbocharger rotor 4 to be tested so as to maintain the test position of the turbocharger rotor 4 to be tested, and the deformable body 21 is arranged between the back plate 1 and the rotor contact portion 22 to reduce the vibration of the back plate 1 from being transmitted to the rotor contact portion 22.

[0022] In actual use, the utility model includes a vibration reduction mechanism 2 arranged on the back plate 1, wherein the vibration reduction mechanism 2 includes a deformable body 21 and a rotor contact portion 22. During testing, the rotor contact portion 22 is used to resist the turbocharger rotor 4 to be tested, and the deformable body 21 is arranged between the back plate 1 and the rotor contact portion 22. When the back plate 1 vibrates, the vibration of the back plate 1 can be absorbed by the deformation of the deformable body 21, thereby reducing the vibration transmission between the back plate 1 and the turbocharger rotor 4 to be tested, so as to reduce the impact on the test of the turbocharger rotor 4 to be tested.

[0023] Please continue reading Figure 1-4 , wherein the back plate 1 includes a back plate body 11 and a deformable body limiting structure 12 arranged on one side of the back plate body 11; one side of the deformable body 21 is against or fixedly connected to the deformable body limiting structure 12.

[0024] Specifically, the deformable body limiting structure 12 is detachably connected to one side of the back plate body 11 through fasteners, and can provide a mounting carrier for the deformable body 21 so that the deformable body 21 is maintained between the back plate 1 and the rotor contact portion 22 to play its role in reducing vibration transmission.

[0025] Please continue reading Figure 1-5 , wherein the other side of the deformable body 21 is against or fixedly connected to the rotor contact portion 22 so as to maintain the position of the rotor contact portion 22.

[0026] Specifically, one side of the deformable body 21 is against or fixedly connected to the deformable body limiting structure 12, and the other side is against or fixedly connected to the rotor contact portion 22. Under this arrangement, the rotor contact portion 22 can be connected to the deformable body 21, so that when the back plate body 11 vibrates, the vibration of the synchronously vibrating deformable body limiting structure 12 is absorbed by the deformation of the deformable body 21, and the rotor contact portion 22 receives less vibration.

[0027] Please continue reading Figure 4 , Figure 5 , wherein the deformable body 21 is in the shape of a circular ring; the deformable body limiting structure 12 includes a limiting ring 121 fixedly connected to one side of the back plate body 11 and arranged along the circumference of the back plate body 11, and a limiting cover plate 122 detachably connected to one side of the back plate body 11; the limiting ring 121 includes a limiting inner side surface 1211, and the limiting cover plate 122 includes a limiting inclined surface 1221; the outer side of the deformable body 21 is against the limiting inner side surface 1211 and the limiting inclined surface 1221; the rotor contact portion 22 includes an arc groove 221 arranged on the outer side; the inner side of the deformable body 21 is against the arc groove 221.

[0028] Please read further Figure 5, with regard to the present embodiment, specifically, the right side of the deformable body 21 is against the back plate body 11, a portion of the upper side of the deformable body 21 is against the limiting inner side surface 1211, and the other portion is against the limiting inclined surface 1221, and the lower side of the deformable body 21 is against the arc groove 221; under normal conditions, the deformable body 21 is squeezed and deformed, and a reaction force is provided to the rotor contact portion 22 through the deformation of the deformable body 21, so that the rotor contact portion 22 maintains the working position; during testing, the deformable body 21 can be further deformed to absorb the vibration generated by the back plate body 11 and the deformable body limiting structure 12, thereby reducing the vibration transmitted to the rotor contact portion 22.

[0029] Furthermore, in order to strengthen the connection function of the deformable body 21, a reinforcement structure may be provided on its side, such as an adhesive layer, so that the outer side surface of the deformable body 21 may adhere to the limiting inner side surface 1211, the limiting inclined surface 1221 and the arc groove 221 to prevent the various parts from falling off; a plug-in structure may also be provided, such as providing outwardly protruding plug-in posts on the inner and outer sides of the deformable body 21, and providing plug-in slots / holes on the limiting inner side surface 1211, the limiting inclined surface 1221 and the arc groove 221 so that the plug-in posts are inserted into the plug-in slots / holes, which may also play a reinforcing role.

[0030] It is worth mentioning that, in another embodiment, the deformable body 21 can also be implemented as a plurality of springs, which are circumferentially distributed between the back plate 1 and the rotor contact portion 22 to maintain the position of the rotor contact portion 22 and reduce the vibration of the rotor contact portion 22 .

[0031] Please continue reading Figure 5 , wherein the rotor contact portion 22 includes a clamping surface 222 which is arranged on the inner side and connected to the turbocharger rotor 4 to be tested.

[0032] During the test, the turbocharger rotor 4 to be tested is mainly fixed by the fixing mechanism in the high-speed dynamic balancing test equipment. Through the setting of the clamping surface 222, the turbine end of the turbocharger rotor 4 to be tested is more reliably fixed, so as to facilitate the test.

[0033] Please continue reading Figure 4 , Figure 5 , wherein the back plate body 11 includes a first channel 111, and the rotor contact portion 22 includes a second channel 223; the first channel 111 and the second channel 223 are interconnected and coaxially arranged.

[0034] Please continue reading Figure 6During the dynamic balancing test, the utility model is equipped with a turbocharger rotor to be tested on one side and a driving bushing on the other side; the turbocharger rotor to be tested passes through the first channel 111 and the second channel 223 and enters the interior of the driving bushing; the driving bushing includes an air inlet end, which includes a plurality of air inlet channels arranged along the circumferential direction, and the air inlet channels are used to connect the air inlet mechanism, so that the airflow acts evenly on the turbine of the turbocharger rotor to be tested, and the rotation of the turbine drives the entire turbocharger rotor to be tested to rotate at a high speed, and then the dynamic balancing test is performed.

[0035] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. A vibration-damping back plate structure for dynamic balancing test, characterized in that: The invention comprises a back plate (1) and a vibration reduction mechanism (2) arranged on one side of the back plate (1); the vibration reduction mechanism (2) comprises a deformable body (21) and a rotor contact portion (22); the rotor contact portion (22) is used to abut against a turbocharger rotor to be tested so as to maintain a test position of the turbocharger rotor to be tested, and the deformable body (21) is arranged between the back plate (1) and the rotor contact portion (22) so as to reduce the transmission of vibration of the back plate (1) to the rotor contact portion (22).

2. The vibration-damping back plate structure for dynamic balancing test according to claim 1, characterized in that: The back plate (1) comprises a back plate body (11) and a deformable body limiting structure (12) arranged on one side of the back plate body (11); one side of the deformable body (21) is against or fixedly connected to the deformable body limiting structure (12).

3. The vibration-damping back plate structure for dynamic balancing test according to claim 2, characterized in that: The other side of the deformable body (21) is pressed against or fixedly connected to the rotor contact portion (22) so as to maintain the position of the rotor contact portion (22).

4. The vibration-damping back plate structure for dynamic balancing test according to claim 3, characterized in that: The deformable body (21) is in the shape of a circular ring; the deformable body limiting structure (12) comprises a limiting ring (121) fixedly connected to one side of the back plate body (11) and arranged along the circumference of the back plate body (11), and a limiting cover plate (122) detachably connected to one side of the back plate body (11); the limiting ring (121) comprises a limiting inner side surface (1211), and the limiting cover plate (122) comprises a limiting inclined surface (1221); the outer side of the deformable body (21) abuts against the limiting inner side surface (1211) and the limiting inclined surface (1221); the rotor contact portion (22) comprises an arc-shaped groove (221) arranged on the outer side; the inner side of the deformable body (21) abuts against the arc-shaped groove (221).

5. The vibration-damping back plate structure for dynamic balancing test according to claim 1 or 3, characterized in that: The rotor contact portion (22) comprises a clamping surface (222) which is arranged on the inner side and connected to the rotor of the turbocharger to be tested.

6. The vibration-damping back plate structure for dynamic balancing test according to claim 2, characterized in that: The back plate body (11) comprises a first channel (111), and the rotor contact portion (22) comprises a second channel (223); the first channel (111) and the second channel (223) are interconnected and coaxially arranged.

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