Engine nvh bench bearing package centering device

Abstract

The embodiment of the application provides an engine NVH bench bearing package centering device, which comprises a supporting seat and connecting pieces; the connecting pieces are fixedly arranged on the supporting seat; the connecting pieces are two and are arranged in parallel; and an adjusting assembly for horizontally adjusting the bearing package is arranged on the connecting pieces. The application can quickly complete centering of the bearing package and improve the accuracy and efficiency of centering.

Description

Technical Field

[0001] This application relates to the field of bearing assembly alignment technology, and more particularly to an engine NVH test bench bearing assembly alignment device. Background Technology

[0002] For general engine bench testing, various alignment technologies exist, including automatic and manual alignment devices. These are primarily for aligning the engine and dynamometer ends of a reinstalled test component. The adjustment end is the engine, which is connected to the dynamometer via a direct-drive shaft or gearbox. Both ends are on the same reference base. These alignment devices are convenient to use and install, and have strong applicability. However, for engine NVH bench testing, the dynamometer and engine are separated into two adjacent spaces, connected by a long shaft and an intermediate bearing assembly. If the bearing assembly needs to be disassembled and repaired, realignment checks are required after restoration. Using existing alignment technologies has the following disadvantages: 1) The bearing package lacks a matching alignment device; 2) The dynamometer, which serves as the centering reference, is separated from the equipment room by the soundproof wall in the middle. The bearing housing in the test room cannot directly establish a reference relationship with the dynamometer, and the distance between the two ends is relatively far, resulting in a large centering error. Therefore, effective centering work cannot be carried out. Utility Model Content

[0003] This application provides an engine NVH test bench bearing assembly alignment device, which relates to the field of bearing assembly alignment technology. It can match different bearing assemblies, complete the alignment of bearing assemblies, and improve the accuracy and efficiency of alignment.

[0004] This application provides an engine NVH test bench bearing assembly alignment device, including a support base and connecting members; the connecting members are fixedly mounted on the support base; there are two connecting members, which are arranged in parallel; the connecting members are provided with adjustment components for adjusting the horizontal level of the bearing assembly.

[0005] Optionally, the support base includes two support rods; the two support rods are arranged in parallel; the connector is fixedly mounted on the two support rods.

[0006] Optionally, the connector and the support rod are perpendicular to each other in position, and the distance between the two connectors is greater than the width of the bearing housing.

[0007] Optionally, it also includes a laser alignment instrument, the transmitting end of which is fixedly mounted on the dynamometer, and the receiving end of which is fixedly mounted on the bearing housing.

[0008] Optionally, the adjusting component is an adjusting bolt, which is threaded onto the connecting member; the adjusting bolt is horizontally positioned.

[0009] Optionally, each of the connectors is provided with two of the adjustment components, which are located at both ends of the bearing housing.

[0010] Optionally, the bearing housing has threaded mounting holes at its four corners, and a connecting cylinder is threaded into the threaded mounting holes. The lower end of the connecting cylinder abuts against the base for supporting the bearing housing, and the upper end of the connecting cylinder extends out of the bearing housing. A fixing bolt is threaded into the connecting cylinder, one end of which is threaded into the base, and the other end abuts against the connecting cylinder.

[0011] Optionally, the upper end of the connecting cylinder is provided with a clamping part.

[0012] This application, by setting up a support base, connecting parts and adjusting components, can adjust the horizontal position of the bearing assembly during the alignment of the bearing assembly, thereby assisting the bearing assembly in completing the alignment, thus improving the alignment efficiency and accuracy of the bearing assembly and reducing the alignment error.

[0013] This application utilizes a laser alignment instrument, fixing the transmitter and receiver of the laser alignment instrument to the dynamometer end and the bearing housing respectively. By establishing a reference connection between the two ends through laser, alignment work can be performed. During alignment, the alignment can be quickly completed by adjusting the components, connecting cylinder, and fixing bolts, thus improving the accuracy and efficiency of alignment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A top view of the engine NVH bench bearing assembly alignment device provided in this application embodiment in its usage state; Figure 2 This is a schematic diagram of the installation structure of the support rod, connectors, and adjustment components. Figure 3 A schematic diagram of the structure of the adjustment component; Figure 4 This is a schematic diagram of the connecting cylinder. Figure 5 This is the display interface of the laser alignment instrument.

[0016] Explanation of reference numerals in the attached figures: 01-Dynamometer equipment room, 02-Engine NVH test room, 1-Support rod, 2-Connector, 3-Adjustment assembly, 4-Bearing housing, 5-Transmitter, 6-Dynamometer, 7-Receiver, 8-Fixing bolt, 9-Threaded mounting hole, 10-Connecting cylinder, 11-Base, 12-Engine assembly, 13-Clamping part, 14-Connecting shaft, 41-Support plate, 42-Bearing base, 43-Bearing cover, 44-Connecting flange, a-Vertical offset, b-Vertical angle, c-Horizontal offset, d-Horizontal angle, e-Vertical foot adjustment, f-Horizontal foot adjustment. Detailed Implementation

[0017] To better understand the technical solutions in this specification, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0018] It should be understood that the described embodiments are merely some, not all, of the embodiments in this specification. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without inventive effort are within the scope of protection of this specification.

[0019] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this specification. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0020] The technical solutions protected by the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0021] Example 1: Please see Figures 1-3This application provides an engine NVH test bench bearing assembly alignment device, comprising a support base and connecting members 2. Connecting members 2 are fixedly mounted on the support base. There are two connecting members 2, arranged in parallel. Each connecting member 2 has an adjustment component 3 for horizontally adjusting the bearing assembly 4. The support base includes two support rods 1, arranged in parallel. The connecting members 2 are fixedly mounted on the two support rods 1. The connecting members 2 are perpendicular to the support rods 1, and the distance between the two connecting members 2 is greater than the width of the bearing assembly 4, allowing the bearing assembly 4 to be placed between the two connecting members 2 during alignment tests. The adjustment component 3 is an adjustment bolt threaded onto the connecting member 2. The adjustment bolt is horizontally positioned, and each connecting member 2 has two adjustment components 3 located at both ends of the bearing assembly 4. This arrangement facilitates quick adjustment of the horizontal position of the bearing assembly 4. In specific implementations, the support rods 1 and connecting members 2 can be made of a metal with high hardness, such as steel or iron. The support rods 1 and connecting members 2 can be fixed by bolt connection or welding. In practical applications, the support base can also be a single piece of steel plate.

[0022] During the alignment test of bearing assembly 4, the two support rods 1 are first placed below bearing assembly 4, so that the connecting parts 2 are located on both sides of bearing assembly 4. Figure 1 As shown, when the horizontal position of the bearing housing 4 needs to be adjusted during the alignment process, the horizontal position adjustment can be completed by rotating the adjustment component 3 on the corresponding side.

[0023] Example 2: This embodiment is a further improvement on the first embodiment. The parts that are the same as those in the first embodiment will not be repeated. Only the differences will be described.

[0024] See Figures 1-4 As shown, it also includes a laser alignment instrument. The transmitting end 5 of the laser alignment instrument is fixedly installed on the dynamometer 6, and the receiving end 7 of the laser alignment instrument is fixedly installed on the bearing housing 4.

[0025] The bearing assembly 4 includes a support plate 41, a bearing base 42, a bearing cover 43, a connecting flange 44, and a bearing body. The bearing base 42 is fixedly mounted on the support plate 41, the bearing body is mounted on the bearing base 42, and the bearing cover 43 is located above the bearing body and fixedly connected to the bearing base 42. There are two connecting flanges 44, which are fixedly connected to both ends of the bearing body. One connecting flange 44 is used for fixed connection to the output end of the engine assembly 12 in the engine NVH bench test, and the other connecting flange 44 is used for fixed connection to one end of the connecting shaft 14. The other end of the connecting shaft 14 is fixedly connected to the shaft of the dynamometer 6.

[0026] The bearing housing 4 has threaded mounting holes 9 at its four corners. Specifically, the four threaded mounting holes 9 are located at the four corners of the support plate 41. A connecting cylinder 10 is threaded into each threaded mounting hole 9, and the lower end of the connecting cylinder 10 rests against the base 11 that supports the bearing housing 4. The upper end of the connecting cylinder 10 extends out of the bearing housing 4, which in this case means extending out of the support plate 41. The extension length can be set as needed, such as 2-5 cm. A fixing bolt 8 is threaded into the connecting cylinder 10. One end of the fixing bolt 8 is threaded into the base 11, i.e., the base 11 has a mounting hole that mates with the threaded fixing bolt 8, and the other end rests against the connecting cylinder 10. The fixing bolt 8 is perpendicular to the base 11. The connecting cylinder 10 allows for easy adjustment of the vertical height of the bearing housing 4. The fixing bolt 8, after the height of the bearing housing 4 is adjusted to meet the requirements, establishes a fixed connection between the fixing bolt 8 and the base 11, preventing the bearing housing 4 from vibrating up and down during engine NVH test, which would affect the test results. The upper end of the connecting cylinder 10 is provided with a clamping part 13. There are two clamping parts 13, which are symmetrically arranged on the connecting cylinder 10. The clamping parts 13 are provided to facilitate the use of tools to clamp the connecting cylinder 10.

[0027] Engine NVH bench test: Dynamometer 6 is installed in dynamometer equipment room 01, bearing package 4, and engine assembly 12 are installed in engine NVH test room 02. Figure 1 As shown.

[0028] The alignment steps for bearing package 4 are as follows: Step 1: Before the alignment work of Contractor 4 begins, the connecting flange 44 between Engine Assembly 12 and Bearing Package 4 is disconnected.

[0029] Step 2: Fix the support base on the base 11. This means fixing the two support rods 1 on the base 11. The support rods 1 can be fixedly connected to the base 11 by bolts or screws.

[0030] Step 3: Fix the transmitter 5 of the laser alignment instrument on the shaft of the dynamometer 6, and fix the receiver 7 of the laser alignment instrument on the connecting flange 44 at the end of the bearing housing 4 near the dynamometer 6. Measure and complete the relevant parameter settings on the laser alignment instrument display. The parameters include the distance between the transmitter 5 and the receiver 7, the distance between two adjacent mounting holes on the base 11 that are threaded with the fixing bolt 8, etc.

[0031] Step 4: After setting the parameters, enter the centering instrument measurement state, such as... Figure 5As shown, when the measuring unit is at the 12 o'clock position, i.e., when the bearing assembly 4 is at the 12 o'clock position, first observe whether the real-time vertical deviation of the bearing assembly 4 at the current position (including vertical offset a and vertical angle b) is within ±0.03mm. If not, adjust the direction according to the display prompts, i.e., the arrow direction and the displayed vertical adjustment amount e on the display interface, and fine-tune the connecting cylinder 10 to adjust the position of the support plate 41 until the deviation requirement is met. Switch the display to the horizontal direction, and similarly, use the adjustment component 3 to complete the horizontal direction check and adjustment. Specifically, observe whether the real-time horizontal deviation of the bearing assembly 4 at the current position (including horizontal offset c and horizontal angle d) is within ±0.03mm. If not, adjust the direction according to the display prompts, i.e., the arrow direction and the displayed horizontal adjustment amount f on the display interface, and fine-tune the adjustment component 3 until the deviation requirement is met.

[0032] Step 5: Rotate connecting shaft 14, and then repeat step 4 above at any two different angle points.

[0033] Step 6: After completing the centering adjustment of the three angle points, tighten the fixing bolts 8 to fix the bearing package 4, remove the laser centering instrument, and complete the centering of the bearing package 4.

[0034] Vertical angle b refers to the deflection angle in the vertical plane, and horizontal angle d refers to the deflection angle in the horizontal plane.

[0035] The above are merely preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A bearing assembly alignment device for an engine NVH test bench, characterized in that, It includes a support base and a connector (2); the connector (2) is fixedly mounted on the support base; there are two connectors (2), and the two connectors (2) are arranged in parallel; the connector (2) is provided with an adjustment component (3) for adjusting the horizontal position of the bearing housing (4).

2. The engine NVH test bench bearing assembly alignment device according to claim 1, characterized in that, The support base includes two support rods (1); the two support rods (1) are arranged in parallel; the connector (2) is fixedly arranged on the two support rods (1).

3. The engine NVH test bench bearing assembly alignment device according to claim 2, characterized in that, The connector (2) is perpendicular to the support rod (1) and the distance between the two connectors (2) is greater than the width of the bearing package (4).

4. The engine NVH test bench bearing assembly alignment device according to claim 1, characterized in that, It also includes a laser alignment instrument, the transmitting end (5) of which is fixedly installed on the dynamometer (6), and the receiving end (7) of which is fixedly installed on the bearing housing (4).

5. The engine NVH test bench bearing assembly alignment device according to claim 1, characterized in that, The adjusting component (3) is an adjusting bolt, which is threaded onto the connecting member (2); the adjusting bolt is set horizontally.

6. The engine NVH test bench bearing assembly alignment device according to claim 5, characterized in that, Each of the connectors (2) is provided with two adjustment components (3), which are located at both ends of the bearing housing (4).

7. The engine NVH test bench bearing assembly alignment device according to claim 1, characterized in that, The bearing housing (4) has threaded mounting holes (9) at its four corners. A connecting cylinder (10) is threaded into the threaded mounting holes (9). The lower end of the connecting cylinder (10) rests against the base (11) used to support the bearing housing (4). The upper end of the connecting cylinder (10) extends out of the bearing housing (4). A fixing bolt (8) is threaded into the connecting cylinder (10). One end of the fixing bolt (8) is threaded into the base (11), and the other end rests against the connecting cylinder (10).

8. The engine NVH test bench bearing assembly alignment device according to claim 7, characterized in that, The upper end of the connecting cylinder (10) is provided with a clamping part (13).

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