Thrust bearing testing device

Abstract

The utility model discloses a thrust bearing testing device, which comprises a supporting outer shell, a transmission shaft and a hollow joint, a cylindrical roller bearing and a tapered roller bearing are arranged in the supporting outer shell, a bearing pressure plate is arranged on the tapered roller bearing, an annular baffle table is arranged at the lower part of the transmission shaft, the annular baffle table is propped against the bearing pressure plate, and the hollow joint is arranged on the transmission shaft. The lower end of the hollow connector is connected with the upper end of the supporting outer shell, the upper end of the transmission shaft penetrates through the cylindrical roller bearing to enter the hollow connector, a connecting hole is formed in the upper end of the hollow connector in the circumferential direction, a stress sliding table is arranged in the supporting outer shell, and a copper sleeve is arranged between the stress sliding table and the inner wall of the supporting outer shell. The tapered roller bearing is arranged on the stress sliding table; the lower end of the supporting outer shell is connected with a supporting base through a bolt, a hydraulic cylinder is arranged in the center of the lower surface of the supporting base, and whether the assembly precision of the thrust device meets the requirement or not is comprehensively judged through temperature rise and pressure exertion.

Description

Technical Field

[0001] The utility model relates to the technical field of thrust bearing testing, in particular to a thrust bearing testing device. Background Art

[0002] When the screw pump is running, it will generate a downward axial force. If it acts directly on the motor, it will cause the motor to run unsteadily, etc., and the bearing needs to bear it. The rated dynamic load of a single thrust bearing cannot meet the demand, so a thrust device appears. The thrust device is composed of multiple thrust bearings connected in series. Each thrust bearing needs to evenly distribute the axial force it bears, and multiple thrust bearings jointly bear the axial force to ensure the service life of the thrust device; the temperature of the thrust device will rise during operation, and the assembly accuracy of the thrust device is often judged by the temperature rise of the thrust device. Due to the lack of detection devices, the equipment is not tested before leaving the factory, and it cannot be guaranteed that each product is a qualified product, resulting in the product not meeting the use requirements; therefore, the market is in urgent need of improved technology to solve the above problems. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a thrust bearing testing device. The device has a simple structural design and is convenient for detecting the thrust device. It can comprehensively judge whether the assembly accuracy of the thrust device meets the requirements through temperature rise and applied pressure, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thrust bearing testing device, comprising a supporting outer shell, a transmission shaft and a hollow joint, a cylindrical roller bearing and a tapered roller bearing are arranged inside the supporting outer shell, a bearing pressure plate is arranged on the tapered roller bearing, an annular baffle is arranged at the lower part of the transmission shaft, the annular baffle abuts against the bearing pressure plate, the lower end of the hollow joint is connected to the upper end of the supporting outer shell, the upper end of the transmission shaft passes through the cylindrical roller bearing to the hollow joint, and a connecting hole is arranged in the circumferential direction of the upper end of the hollow joint.

[0005] Furthermore, a force-bearing slide is arranged inside the supporting outer shell, a copper sleeve is arranged between the force-bearing slide and the inner wall of the supporting outer shell, and a tapered roller bearing is arranged on the force-bearing slide.

[0006] Furthermore, the lower end of the supporting outer shell is connected to a supporting seat by bolts, a hydraulic cylinder is arranged at the center of the lower surface of the supporting seat, the telescopic end of the hydraulic cylinder passes through the interior of the supporting outer shell, and a pressure sensor is arranged between the telescopic end of the hydraulic cylinder and the force slide, and a fixing hole is arranged at the lower end of the supporting seat.

[0007] Furthermore, the bearing pressure plate is configured as a hollow convex structure, the raised portion of the bearing pressure plate is inserted into the center hole of the tapered roller bearing, and the lower end of the transmission shaft is inserted into the bearing pressure plate.

[0008] Furthermore, an annular protrusion is provided on the upper end of the supporting outer shell, and the lower end of the hollow joint is threadedly connected to the annular protrusion.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. The device has a simple structural design and low manufacturing cost. The cylindrical roller bearing is used to straighten the transmission shaft to ensure the vertical and stable rotation of the transmission shaft. The tapered roller bearing is used to transmit the pressure of the hydraulic cylinder to simulate the axial force generated when the screw pump is running.

[0011] 2. On the basis of judging the thrust device only by temperature rise, pressure detection is added. The assembly accuracy of the thrust device is judged by comprehensive judgment of temperature rise and applied pressure to see whether it meets the requirements, and the effect will be accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the supporting outer shell of the utility model.

[0014] In the figure: 1 fixing hole, 2 supporting seat, 3 force slide, 4 supporting outer shell, 5 annular baffle, 6 transmission shaft, 7 connecting hole, 8 hollow joint, 9 cylindrical roller bearing, 10 bearing pressure plate, 11 tapered roller bearing, 12 copper sleeve, 13 pressure sensor, 14 hydraulic cylinder, 15 annular protrusion. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] See also Figure 1-2The utility model provides a technical solution: a thrust bearing testing device, including a supporting outer shell 4, a transmission shaft 6 and a hollow joint 8. A cylindrical roller bearing 9 and a tapered roller bearing 11 are arranged inside the supporting outer shell 4. The cylindrical roller bearing 9 is used to straighten the transmission shaft 6 to ensure the vertical and stable rotation of the transmission shaft 6. The tapered roller bearing 11 transmits the pressure of the hydraulic cylinder 14. A bearing pressure plate 10 is arranged on the tapered roller bearing 11. The bearing pressure plate 10 is used to connect the transmission shaft 6 and the tapered roller bearing 11. It can be used as a transition piece for pressure transmission and also used to connect with the transmission shaft 6. An annular stopper 5 is arranged at the lower part of the transmission shaft 6. The annular stopper 5 abuts against the bearing pressure plate 10. The lower end of the hollow joint 8 is connected to the supporting outer shell. The upper end of the body 4 is connected, and an annular protrusion 15 is provided on the upper end of the supporting outer shell 4. The lower end of the hollow joint 8 is threadedly connected to the annular protrusion 15. The detachable connection method is convenient for disassembly and maintenance. The upper end of the transmission shaft 6 passes through the cylindrical roller bearing 9 to the hollow joint 8. A connecting hole 7 is provided in the circumferential direction of the upper end of the hollow joint 8. The connecting hole 7 is used to connect the thrust device. The main shaft in the thrust device is correspondingly connected to the transmission shaft 6 by means of a spline. The transmission shaft 6 rotates with the main shaft. During the rotation, pressure is applied to the transmission shaft 6 by the hydraulic cylinder 14. The temperature rise of the thrust device during operation is used to judge whether the overall installation accuracy is qualified, thereby achieving the effect of being able to detect the assembly accuracy of the entire thrust device.

[0017] A force-bearing slide 3 is arranged inside the supporting outer shell 4, and a copper sleeve 12 is arranged between the force-bearing slide 3 and the inner wall of the supporting outer shell 4. The copper sleeve 12 has high hardness and improves the wear resistance of the force-bearing slide 3. The tapered roller bearing 11 is arranged on the force-bearing slide 3, and the force-bearing slide 3 transmits force to the tapered roller bearing 11.

[0018] The lower end of the supporting outer shell 4 is connected to the supporting base 2 by bolts, and a hydraulic cylinder 14 is arranged at the center of the lower surface of the supporting base 2. The telescopic end of the hydraulic cylinder 14 passes through the interior of the supporting outer shell 4, and a pressure sensor 13 is arranged between the telescopic end of the hydraulic cylinder 14 and the force slide 3. The pressure sensor 13 can monitor in real time the pressure applied by the hydraulic cylinder 14 to the transmission shaft 6, and the temperature rise of the thrust device during operation can be combined to detect whether the overall installation accuracy of the thrust device meets the requirements. Compared with relying solely on temperature rise, it is more accurate. A fixing hole 1 is arranged at the lower end of the supporting base 2, and the fixing hole 1 is used to fix the device.

[0019] The bearing pressure plate 10 is configured as a hollow convex structure, and the raised portion of the bearing pressure plate 10 is inserted into the center hole of the tapered roller bearing 11. This structure facilitates the positioning of the bearing pressure plate 10 and ensures the structural installation accuracy and stability. The lower end of the drive shaft 6 is inserted into the bearing pressure plate 10.

[0020] The basic principles, main features and advantages of the present invention are shown and described above. Without departing from the spirit and scope of the present invention, the present invention may also be subject to various changes and improvements, which are all within the scope of the present invention to be protected.

Claims

1. A thrust bearing testing device, comprising a supporting outer shell (4), a transmission shaft (6) and a hollow joint (8), characterized in that: A cylindrical roller bearing (9) and a tapered roller bearing (11) are arranged inside the supporting outer shell (4); a bearing pressure plate (10) is arranged on the tapered roller bearing (11); an annular stopper (5) is arranged at the lower part of the transmission shaft (6); the annular stopper (5) abuts against the bearing pressure plate (10); the lower end of the hollow joint (8) is connected to the upper end of the supporting outer shell (4); the upper end of the transmission shaft (6) passes through the cylindrical roller bearing (9) to the hollow joint (8); and a connecting hole (7) is arranged in the circumferential direction of the upper end of the hollow joint (8).

2. A thrust bearing testing device according to claim 1, characterized in that: A force-bearing slide (3) is arranged inside the supporting outer shell (4), a copper sleeve (12) is arranged between the force-bearing slide (3) and the inner wall of the supporting outer shell (4), and a tapered roller bearing (11) is arranged on the force-bearing slide (3).

3. A thrust bearing testing device according to claim 2, characterized in that: The lower end of the supporting outer shell (4) is connected to the supporting seat (2) by bolts, a hydraulic cylinder (14) is arranged at the center of the lower surface of the supporting seat (2), the telescopic end of the hydraulic cylinder (14) passes through the interior of the supporting outer shell (4), and a pressure sensor (13) is arranged between the telescopic end of the hydraulic cylinder (14) and the force-bearing slide (3), and a fixing hole (1) is arranged at the lower end of the supporting seat (2).

4. A thrust bearing testing device according to claim 1, characterized in that: The bearing pressure plate (10) is configured as a hollow convex structure, the convex portion of the bearing pressure plate (10) is inserted into the central hole of the tapered roller bearing (11), and the lower end of the transmission shaft (6) is inserted into the bearing pressure plate (10).

5. A thrust bearing testing device according to claim 1, characterized in that: An annular protrusion (15) is provided at the upper end of the supporting outer shell (4), and the lower end of the hollow joint (8) is threadedly connected to the annular protrusion (15).

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