Single-screw water-lubricated sliding bearing testing device
By designing a single-screw water-lubricated sliding bearing test device, the problem of high energy consumption and high cost caused by water-lubricated sliding bearing life test on compressors was solved, and low-cost and low-energy bearing testing was achieved.
Patent Information
- Application Number
- CN202423235252.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-27
AI Technical Summary
In the prior art, the life test of water-lubricated sliding bearings needs to be performed on a compressor, resulting in high energy consumption, high cost and lack of specialized measuring devices.
A single-screw water-lubricated sliding bearing test device is designed, which includes components such as a water tank, a casing, upper and lower bearing seats, a sliding bearing static ring, a dynamic ring, a wave spring, a ceramic bearing and a servo motor, and is tested to simulate the working conditions of a compressor.
It is possible to test sliding bearings of different sizes and materials without replacing the bearing seat, which is convenient, low-cost and low-energy.
Smart Images
Figure CN223376931U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a testing technology, in particular to a bearing testing technology, specifically to a single-screw water-lubricated sliding bearing testing device. Background Art
[0002] Currently, oil-free single-screw compressors are lubricated with internal water spray. When rolling bearings are used for the planetary shaft, the shaft end seals are complex and expensive. The vertical arrangement of the planetary shaft hinders drainage, and if a leak occurs and the seal fails, water can flow down the shaft into the bearings, causing lubrication failure or rust and damage. Water-lubricated sliding bearings can solve these problems. Water spraying is already required within the system, eliminating the need for other lubricating media. Once designed, water-lubricated sliding bearings require life testing, but testing them directly on the compressor consumes significant energy and is costly. Utility Model Content
[0003] The purpose of the utility model is to design a single-screw water-lubricated sliding bearing testing device that can simulate the working conditions of the compressor to solve the problem that the life test of water-lubricated bearings can only be carried out by installing it in the compressor for pressure testing due to the lack of corresponding measuring devices, resulting in high energy consumption and high cost.
[0004] The technical solution of the utility model is:
[0005] A single-screw water-lubricated sliding bearing testing device includes a water tank 1 and a casing 2. The casing 2 is located on the upper part of the water tank 1, and the lubricating water in the casing falls into the water tank by gravity. The device is characterized in that: an upper bearing seat 3 is installed on the upper part of the casing 2, and a lower bearing seat 4 is installed on the lower part. A sliding bearing static ring 5 is installed in the upper bearing seat 3 and the lower bearing seat 4. The upper and lower ends of the main shaft 6 are installed in the sliding bearing static ring 5. The sliding bearing dynamic ring 7 is sleeved on the main shaft 6. One end face of the sliding bearing dynamic ring 7 is against the end face of the corresponding sliding bearing static ring 5, and the other end face of the sliding bearing dynamic ring 7 is against the corresponding step surface on the main shaft 6; the main shaft 6 is equipped with a wave spring 8 that can generate axial thrust, and one end of the wave spring 8 is against The sliding bearing dynamic ring 7 is abutted against each other, and the other end is abutted against the loading disk 9 carried by the main shaft 6; the outer circumferential and axial sides of the loading disk 9 are respectively abutted against the corresponding axial ceramic bearing 10 and radial ceramic bearing 11, the axial ceramic bearing 10 is driven by the axial force electric cylinder 12, and the radial ceramic bearing 11 is driven by the lateral force electric cylinder 13; a main shaft synchronous pulley 14 is installed on the main shaft 6, and the main shaft synchronous pulley 14 is connected to the driving synchronous pulley 16 through a synchronous belt 15, and the driving synchronous pulley 16 is installed on the output shaft of the servo motor 17; a water inlet hole 18 is opened on the upper bearing seat 3 and the lower bearing seat 4, and the water inlet hole 18 is connected to the water outlet of the metering pump 19 through a pipeline, and the water inlet of the metering pump 19 is connected to the water tank.
[0006] The upper bearing seat 3 and the lower bearing seat 4 are both equipped with bearing removal rings 20 for disassembling and installing the sliding bearing static ring 5.
[0007] A pressure gauge 21 and a flow meter 22 are installed on the pipeline at the outlet end of the metering pump.
[0008] Beneficial effects of the utility model:
[0009] The utility model can test sliding bearings of the same size, different materials and structures without replacing the bearing seat; sliding bearings of different sizes, different materials and structures can be tested by replacing the bearing seat; the test is convenient, the overall cost is low, and the operating energy consumption is small. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the testing device of the present utility model. DETAILED DESCRIPTION
[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0012] like Figure 1 shown.
[0013] A single-screw water-lubricated sliding bearing testing device includes a water tank 1 and a casing 2. The casing 2 is located on the upper part of the water tank 1. The lubricating water in the casing falls into the water tank by gravity. An upper bearing seat 3 is installed on the upper part of the casing 2, and a lower bearing seat 4 is installed on the lower part. A sliding bearing static ring 5 is installed in the upper bearing seat 3 and the lower bearing seat 4. A bearing removal ring 20 for disassembling and installing the sliding bearing static ring 5 is installed in the upper bearing seat 3 and the lower bearing seat 4. The upper and lower ends of the main shaft 6 are installed in the sliding bearing static ring 5, and the sliding bearing dynamic ring 7 is sleeved on the main shaft 6. One end face of the sliding bearing dynamic ring 7 is against the end face of the corresponding sliding bearing static ring 5, and the other end face of the sliding bearing dynamic ring 7 is against the corresponding step surface on the main shaft 6; the main shaft 6 is equipped with a wave spring 8 that can generate axial thrust, one end of the wave spring 8 is against the sliding bearing dynamic ring 7, and the other end is against the loading disk 9 carried by the main shaft 6; the outer circumferential and axial sides of the loading disk 9 are respectively against the corresponding axial ceramic bearing 10 and radial ceramic bearing 11 The axial ceramic bearing 10 is driven by the axial force electric cylinder 12, and the radial ceramic bearing 11 is driven by the lateral force electric cylinder 13. A main shaft synchronous pulley 14 is installed on the main shaft 6. The main shaft synchronous pulley 14 is connected to the driving synchronous pulley 16 through a synchronous belt 15. The driving synchronous pulley 16 is installed on the output shaft of the servo motor 17. The upper bearing seat 3 and the lower bearing seat 4 are both provided with a water inlet 18. The water inlet 18 is connected to the water outlet of the metering pump 19 through a pipeline. A pressure gauge 21 and a flow meter 22 are installed on the pipeline at the outlet end of the metering pump 19. The water inlet of the metering pump 19 is connected to the water tank, such as Figure 1As shown, the housing 2 , the servo motor 17 , the lateral force electric cylinder 13 , and the axial force electric cylinder 12 of the present invention are all fixed on a common base 23 .
[0014] Details are as follows:
[0015] The utility model discloses a sliding bearing dynamic ring installed on the main shaft, and a sliding bearing static ring installed on the bearing seat, adopting an interference fit. A bearing removal ring is provided between the static ring and the bearing seat, which facilitates the removal of the sliding bearing static ring.
[0016] The upper and lower bearing seats support and fix the main shaft on the casing. There is a disc section in the middle of the main shaft for counterweight and load bearing point. A wave spring is installed on the main shaft disc to provide axial preload force to the sliding bearing. A synchronous pulley is installed at the bottom of the main shaft disc.
[0017] The servo motor equipped with a synchronous pulley drives the main shaft to rotate through the synchronous belt.
[0018] Electric cylinders are installed on the axis and sides of the spindle, and ceramic bearings are installed at the front end of the electric cylinder to contact the spindle. The calculated alternating load parameters are set in the control system and applied to the rotating spindle through the electric cylinder to simulate the operating conditions.
[0019] A water tank is installed at the bottom of the device, and water is transported to the upper and lower sliding bearings for lubrication through a metering pump. The water pump outlet is equipped with pressure and flow detection instruments. The lubricated water flows back to the water tank for recycling.
[0020] This device can test sliding bearings of the same size, different materials and structures without replacing the bearing seat; it can test sliding bearings of different sizes, different materials and structures by replacing the bearing seat; the test is convenient, the overall cost is low, and the operating energy consumption is small.
[0021] The parts not involved in the present invention are the same as the existing technology or can be implemented by using the existing technology.
Claims
1. A single-screw water-lubricated sliding bearing testing device, comprising a water tank (1) and a housing (2), wherein the housing (2) is located above the water tank (1), and lubricating water in the housing falls into the water tank by gravity, and is characterized by: The upper part of the housing (2) is equipped with an upper bearing seat (3), and the lower part is equipped with a lower bearing seat (4). The upper bearing seat (3) and the lower bearing seat (4) are both equipped with a sliding bearing static ring (5). The upper and lower ends of the main shaft (6) are installed in the sliding bearing static ring (5). The sliding bearing dynamic ring (7) is sleeved on the main shaft (6). One end face of the sliding bearing dynamic ring (7) is against the end face of the corresponding sliding bearing static ring (5), and the other end face of the sliding bearing dynamic ring (7) is against the corresponding step surface on the main shaft (6); the main shaft (6) is equipped with a wave spring (8) that can generate axial thrust, one end of the wave spring (8) is against the sliding bearing dynamic ring (7), and the other end is against the loading disk (9) carried by the main shaft (6); the loading disk ( The outer side of the main shaft (9) is respectively offset against the corresponding axial ceramic bearing (10) and radial ceramic bearing (11) in the circumferential and axial directions. The axial ceramic bearing (10) is driven by the axial force electric cylinder (12), and the radial ceramic bearing (11) is driven by the lateral force electric cylinder (13). A main shaft synchronous pulley (14) is installed on the main shaft (6). The main shaft synchronous pulley (14) is connected to the driving synchronous pulley (16) through a synchronous belt (15). The driving synchronous pulley (16) is installed on the output shaft of the servo motor (17). A water inlet hole (18) is opened on the upper bearing seat (3) and the lower bearing seat (4). The water inlet hole (18) is connected to the water outlet of the metering pump (19) through a pipeline. The water inlet of the metering pump (19) is connected to the water tank.
2. The single-screw water-lubricated sliding bearing testing device according to claim 1, characterized in that: The upper bearing seat (3) and the lower bearing seat (4) are both equipped with a bearing disassembly ring (20) for disassembling and assembling the static ring (5) of the sliding bearing.
3. The single-screw water-lubricated sliding bearing testing device according to claim 1, characterized in that: A pressure gauge (21) and a flow meter (22) are installed on the pipeline at the outlet end of the metering pump.