A thrust hydrostatic bearing reliability test bench

Abstract

The utility model discloses a kind of thrust liquid static pressure bearing reliability test benches, including bearing to be detected, base and top shell, the base is equipped with arc groove, bearing to be detected is placed in arc groove, top shell is sleeved in the outside of bearing to be detected, and presses down and is pressed tightly fixed on base bearing to be detected, base is equipped with bottom plate on side away from top shell, bottom plate is equipped with support seat, motor is installed on support seat, driving wheel is installed on the rotating shaft of motor, driving wheel and the main shaft frictional contact of bearing to be detected are arranged, the main shaft side of bearing to be detected is equipped with detection equipment. The utility model structure is simple, main shaft can directly contact with driving wheel and the probe on contact type displacement sensor, the rotation of main shaft can be directly driven by driving wheel, and whether shake in the operation process of main shaft can be detected by contact type displacement sensor, to ensure the quality of bearing to be detected.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing technology, specifically to a reliability test bench for thrust hydrostatic bearings. Background Technology

[0002] The thrust hydrostatic bearing supplies oil to the bearing oil chamber through an external high-pressure oil pump, forming a stable high-pressure oil film that completely separates the rotating thrust disc from the stationary bearing housing, achieving non-contact support.

[0003] Currently, thrust hydrostatic bearings are generally tested after production. However, the current testing method is quite complicated, making it impossible to quickly disassemble and assemble the thrust hydrostatic bearing, effectively drive the spindle on the thrust hydrostatic bearing, and consequently, not be able to test the stability of the spindle rotation. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a reliability test bench for thrust hydrostatic bearings, which can quickly install the bearing to be tested and directly make the bearing to be tested contact with the drive wheel and the contact displacement sensor, so as to solve the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a reliability test bench for thrust hydrostatic bearings, comprising a bearing to be tested, a base, and a top shell. The base is provided with an arc-shaped groove, in which the bearing to be tested is placed. The top shell is fitted over the bearing to be tested and pressed down to press and fix the bearing to be tested onto the base. A drive mechanism for driving the top shell to descend is installed on the base. A bottom plate is provided on the side of the base away from the top shell, and a support seat is installed on the bottom plate. A motor is installed on the support seat, and a drive wheel is installed on the shaft of the motor. The drive wheel is in frictional contact with the main shaft of the bearing to be tested. A testing device is provided on one side of the main shaft of the bearing to be tested.

[0006] As a preferred technical solution, the drive mechanism includes a cylinder, a push plate, multiple fixed plates, and multiple connecting rods. The fixed plates are respectively installed on both sides of the top shell, the cylinder is installed on the side of the base facing the bottom plate, the push plate is installed on the piston rod of the cylinder, and the connecting rods are all installed between the push plate and the fixed plate.

[0007] As a preferred technical solution, the top shell is designed with a "U" shape, and both ends of the top shell and the base are equipped with arc-shaped limiting plates. The inner side of the limiting plates is set to abut against the end face of the load-bearing seat on the bearing to be tested.

[0008] As a preferred technical solution, the testing equipment includes a fixed sleeve, a fixed rod, a contact displacement sensor, and bolts. The contact displacement sensor is inserted into the fixed sleeve and locked in place by the bolts. The probe on the contact displacement sensor is in contact with the outer ring of the spindle on the bearing to be tested. One end of the fixed rod is installed on the fixed sleeve, and the other end is installed on the support.

[0009] As a preferred technical solution, multiple support rods are installed between the base and the bottom plate.

[0010] As a preferred technical solution, the top shell, base, and limiting plate are all made of metal.

[0011] As a preferred technical solution, a circular clamping cavity is formed between the top shell and the base, and the inner diameter of the clamping cavity matches the diameter of the bearing to be tested.

[0012] As a preferred technical solution, the bearing to be tested is a thrust hydrostatic bearing.

[0013] The beneficial effects of this utility model are: This utility model has a simple structure. The descending top shell can quickly clamp and position the bearing to be tested. With the bearing to be tested fixed, its main shaft can directly contact the drive wheel and the probe on the contact displacement sensor. The drive wheel can directly drive the rotation of the main shaft. Combined with the contact displacement sensor, it can detect whether the main shaft shakes during operation, so as to ensure the quality of the bearing to be tested. Attached Figure Description

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

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model after removing the top shell and the bearing to be tested;

[0018] Figure 4 This is a schematic diagram of the top shell of this utility model.

[0019] The components are as follows: 1. Base; 2. Top shell; 3. Limiting plate; 4. Fixing plate; 5. Connecting rod; 6. Push plate; 7. Cylinder; 8. Base plate; 9. Motor; 10. Support seat; 11. Contact displacement sensor; 12. Bearing to be tested; 13. Drive wheel; 14. Fixing sleeve; 15. Arc groove. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] All features disclosed in this specification, or steps in all methods or processes disclosed herein, may be combined in any way, except for mutually exclusive features and / or steps.

[0022] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention discloses a reliability test bench for a thrust hydrostatic bearing, comprising a bearing 12 to be tested, a base 1, and a top shell 2. The base 1 is provided with an arc-shaped groove 15, in which the bearing 12 to be tested is placed. The top shell 2 is fitted over the bearing 12 to be tested and pressed down to press and fix the bearing 12 to be tested onto the base 1. A drive mechanism for driving the top shell 2 to descend is installed on the base 1. A base plate 8 is provided on the side of the base 1 away from the top shell 2. A support seat 10 is installed on the base plate 8. A motor 9 is installed on the support seat 10. A drive wheel 13 is installed on the shaft of the motor 9. The drive wheel 13 is in frictional contact with the main shaft of the bearing 12 to be tested. A testing device is provided on one side of the main shaft of the bearing 12 to be tested.

[0024] In this embodiment, the driving mechanism includes a cylinder 7, a push plate 6, multiple fixed plates 4 and multiple connecting rods 5. The fixed plates 4 are respectively installed on both sides of the top shell 2, the cylinder 7 is installed on the side of the base 1 facing the bottom plate 8, the push plate 6 is installed on the piston rod of the cylinder 7, and the connecting rods 5 are all installed between the push plate 6 and the fixed plate 4.

[0025] Both the cylinder and the motor are controlled by a controller, and the cylinder is connected to a power source and a pneumatic source, while the motor is also connected to a power source.

[0026] In this embodiment, the top shell 2 is arranged in a "U" shape, and both ends of the top shell 2 and the base 1 are equipped with arc-shaped limiting plates 3. The inner side of the limiting plate 3 is set to abut against the end face of the load-bearing seat on the bearing to be tested 12.

[0027] In this embodiment, the detection device includes a fixed sleeve 14, a fixed rod, a contact displacement sensor 11, and bolts. The contact displacement sensor 11 is inserted into the fixed sleeve 14 and locked in place by the bolts. The probe on the contact displacement sensor 11 is in contact with the outer ring of the spindle on the bearing to be tested 12. One end of the fixed rod is installed on the fixed sleeve 14, and the other end is installed on the support base 10.

[0028] The mounting sleeve has a first screw hole on one side and a second screw hole on the other side of the contact displacement sensor. The bolt is threaded into the first and second screw holes to ensure the stability of the contact displacement sensor installation. Conversely, the contact displacement sensor can be quickly disassembled after the bolt is unscrewed. The data detected by the contact displacement sensor can be processed by a microcontroller and displayed on the screen.

[0029] In this embodiment, multiple support rods are installed between the base 1 and the base plate 8.

[0030] In this embodiment, the top shell 2, the base 1, and the limiting plate 3 are all made of metal materials, which increases the robustness and service life.

[0031] In this embodiment, a circular clamping cavity is formed between the top shell 2 and the base 1. The inner diameter of the clamping cavity matches the diameter of the bearing 12 to be tested, so as to ensure the contact area with the bearing to be tested and to firmly clamp and position it.

[0032] In this embodiment, the bearing 12 to be tested is a thrust hydrostatic bearing.

[0033] When in use, place the bearing to be tested in the arc-shaped groove and start the cylinder to extend the piston rod of the cylinder and push the push plate. The movement of the push plate drives the connecting rod and the fixed plate, and the fixed plate can simultaneously drive the top shell, so that the top shell can descend and press the bearing to be tested onto the base.

[0034] Furthermore, as the bearing under test is clamped and positioned, the spindle on the bearing under test will directly contact the drive wheel and the probe on the contact displacement sensor. After the motor is started, the motor can drive the drive wheel to rotate, and the drive wheel can drive the spindle to rotate through friction. During the rotation, the spindle can contact the probe on the contact displacement sensor. The contact displacement sensor can continuously detect the spindle to ensure the stability of the spindle operation.

[0035] Conversely, after the top shell is lifted, the spindle, drive wheel, and contact displacement sensor are not fixed together, so they can be directly removed, making disassembly and assembly easier.

[0036] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A reliability test bench for thrust hydrostatic bearings, characterized in that: The device includes a bearing to be tested (12), a base (1), and a top shell (2). The base (1) has an arc groove (15), in which the bearing to be tested (12) is placed. The top shell (2) is fitted over the bearing to be tested (12) and pressed down to fix the bearing to be tested (12) onto the base (1). The base (1) is equipped with a drive mechanism that drives the top shell (2) to descend. The side of the base (1) away from the top shell (2) is provided with a base plate (8). A support seat (10) is installed on the base plate (8). A motor (9) is installed on the support seat (10). A drive wheel (13) is installed on the shaft of the motor (9). The drive wheel (13) is in frictional contact with the main shaft of the bearing to be tested (12). A testing device is provided on one side of the main shaft of the bearing to be tested (12).

2. The thrust hydrostatic bearing reliability test bench according to claim 1, characterized in that: The drive mechanism includes a cylinder (7), a push plate (6), multiple fixed plates (4) and multiple connecting rods (5). The fixed plates (4) are respectively installed on both sides of the top shell (2). The cylinder (7) is installed on the side of the base (1) facing the bottom plate (8). The push plate (6) is installed on the piston rod of the cylinder (7). The connecting rods (5) are all installed between the push plate (6) and the fixed plate (4).

3. The thrust hydrostatic bearing reliability test bench according to claim 1, characterized in that: The top shell (2) is U-shaped. Both ends of the top shell (2) and the base (1) are equipped with arc-shaped limiting plates (3). The inner side of the limiting plate (3) is in contact with the end face of the load-bearing seat on the bearing (12) to be tested.

4. The thrust hydrostatic bearing reliability test bench according to claim 1, characterized in that: The testing equipment includes a fixed sleeve (14), a fixed rod, a contact displacement sensor (11), and bolts. The contact displacement sensor (11) is inserted into the fixed sleeve (14) and locked in place by the bolts. The probe on the contact displacement sensor (11) is in contact with the outer ring of the spindle on the bearing (12) to be tested. One end of the fixed rod is installed on the fixed sleeve (14), and the other end is installed on the support base (10).

5. The thrust hydrostatic bearing reliability test bench according to claim 1, characterized in that: Multiple support rods are installed between the base (1) and the base plate (8).

6. The thrust hydrostatic bearing reliability test bench according to claim 3, characterized in that: The top shell (2), base (1) and limiting plate (3) are all made of metal.

7. The thrust hydrostatic bearing reliability test bench according to claim 1, characterized in that: A circular clamping cavity is formed between the top shell (2) and the base (1), and the inner diameter of the clamping cavity matches the diameter of the bearing (12) to be tested.

8. The thrust hydrostatic bearing reliability test bench according to claim 1, characterized in that: The bearing to be tested (12) is a thrust hydrostatic bearing.

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