Radial loading device of high-thrust sliding bearing test bed

Abstract

The utility model discloses a radial loading device for a high-thrust sliding bearing test bed, which comprises a bearing seat, mounting through holes are formed in the middle parts of a left side plate and a right side plate of the bearing seat, and a half bearing bush block is mounted at the upper part in the bearing seat; supporting blocks are fixed to a front side plate and a rear side plate of the bearing seat, and the bottom ends of the front portions and the rear portions of the half bearing bush blocks are close to or abut against the top faces of the supporting blocks in a pressing mode. The device is simple in structure, remarkable in effect, safe, reliable and convenient to disassemble and assemble.

Description

Technical field:

[0001] The utility model relates to the technical field of bearing bush equipment, and more specifically to a radial loading device for a large thrust sliding bearing test bench. Background technology:

[0002] Sliding bearings are widely used in mechanical equipment, including thermal power, hydropower, wind power, as well as steam turbines, compressors, and blowers. When designing sliding bearings, it is necessary to combine relevant design standards, actual use experience, on-site use conditions and other requirements. The reference standards and design experience when designing conventional sliding bearings can basically meet the on-site use requirements, but sliding bearings for complex working conditions, harsh working conditions, high reliability, and high safety need to undergo factory performance tests to verify that the various performances of the product design meet the use requirements. Some sliding bearing manufacturers basically have their own sliding bearing test benches for testing and detecting the various performances of the designed and produced sliding bearings.

[0003] The design of the sliding bearing test bench adopts a universal design, that is, it must meet the test requirements of different loads and different speeds. During the test, it is necessary to simulate the actual load and speed of the bearing when it is in use to test the performance of the sliding bearing. Traditional load simulation uses rolling bearing loading or counterweight loading, but no matter whether it is the rolling bearing loading method or the counterweight loading method, its disassembly and assembly convenience, maintainability, safety, and energy saving are relatively low, and it is very troublesome to disassemble and assemble once, especially the rolling bearing loading method, the rolling bearing is almost impossible to disassemble and replace. Utility model content:

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a radial loading device for a large thrust sliding bearing test bench, which has a simple structure, significant effect, safety and reliability, and is easy to assemble and disassemble.

[0005] The solution of the utility model to solve the technical problem is:

[0006] A radial loading device for a large thrust sliding bearing test bench comprises a bearing seat, wherein the middle parts of the left and right side plates of the bearing seat are formed with mounting through holes, and a half-bearing block is installed on the upper part of the inner part of the bearing seat;

[0007] Support blocks are fixed to the front and rear side plates of the bearing seat, and the bottom ends of the front and rear parts of the half-bearing block are close to or pressed against the top surface of the support blocks;

[0008] A central through hole is formed in the middle of the top plate of the bearing seat, and the push cylinder is inserted into the central through hole. The top of the push cylinder extends out of the top of the central through hole. The edge of the top plate of the push cylinder is above the top surface of the top plate of the bearing seat and is fixed to the top plate of the bearing seat by bolts. A push block is fixed to the bottom end of the push rod of the push cylinder, and the bottom surface of the push block faces the middle of the top surface of the half-bearing block.

[0009] The inner side walls of the front and rear side plates of the bearing seat are fixed with guide extension blocks, the inner side walls of the guide extension blocks are arc-shaped walls, the middle of the outer arc-shaped wall of the half-bearing block is formed with an arc-shaped groove, the inner side of the guide extension block is inserted into the arc-shaped groove, the inner side wall of the guide extension block is close to the inner arc-shaped wall of the arc-shaped groove, and the left and right ends of the inner side of the guide extension block are close to the left and right inner side walls of the arc-shaped groove. The guide extension block can ensure that the half-bearing block has a certain guiding effect when it is lifted up and down.

[0010] A cushion block is fixed on the middle bottom surface of the arc-shaped groove formed in the middle of the outer arc-shaped wall surface of the semi-bearing block, and the bottom surface of the pushing block faces the top surface of the cushion block.

[0011] A raised extension portion is formed in the middle of the inner wall surface of the support block, and the bottom ends of the front and rear parts of the half-bearing block are close to or pressed against the top surfaces of the corresponding raised extension portions.

[0012] The bearing seat comprises an upper seat body and a lower seat body, upper connecting blocks are fixed to the bottom surfaces of the front and rear side plates of the upper seat body, and supporting blocks are fixed to the top surfaces of the front and rear side plates of the lower seat body, the top surfaces of the supporting blocks are pressed against and fixedly connected to the bottom surfaces of the corresponding upper connecting blocks, and the inner ends of the supporting blocks extend into the interior of the bearing seat composed of the upper seat body and the lower seat body;

[0013] An upper semicircular concave hole extending upward is formed in the middle of the bottom surface of the left and right side plates of the upper seat body, and a lower semicircular concave hole extending downward is formed in the middle of the top surface of the left and right side plates of the lower seat body. An upper semicircular end cover is inserted into the upper semicircular concave hole, and the upper semicircular end cover is fixed to the corresponding left plate or right plate of the upper seat body. A lower semicircular end cover is inserted into the lower semicircular concave hole, and the lower semicircular end cover is fixed to the corresponding left plate or right plate of the lower seat body. The upper semicircular end cover and the corresponding lower semicircular end cover are pressed up and down, and a mounting through hole is formed in the middle thereof.

[0014] An oil outlet connecting pipe is connected to one side plate of the lower seat body, and the oil outlet connecting pipe is communicated with the interior of the bearing seat.

[0015] A connecting through hole extending forward and backward is formed on one of the support blocks, and a high-pressure oil inlet pipe is connected to the outer end of the connecting through hole, and an inner oil inlet pipe is connected to the inner end of the connecting through hole. The inner oil inlet pipe is located above the half-bearing block, and the oil outlet end of the inner oil inlet pipe is connected to the first vertical oil inlet hole formed on the left part of the top surface of the half-bearing block. The bottom end of the first vertical oil inlet hole is connected to the inner arc groove formed in the left part of the half-bearing block, and the inner arc groove is connected to the axial hole formed on the left side wall of the half-bearing block. The inner end of the axial hole is connected to the first radial oil outlet hole formed in the middle of the inner side wall of the half-bearing block. After the high-pressure oil inlet pipe is filled with oil, the oil can be filled from the inner side wall of the half-bearing block and the rotating shaft installed later to achieve lubrication and reduce wear.

[0016] The outstanding effects of the utility model are:

[0017] Compared with the prior art, the utility model has the advantages of simple structure, remarkable effect, safety and reliability, and convenient assembly and disassembly. Description of the drawings:

[0018] Figure 1 It is a partial structural schematic diagram of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the utility model;

[0020] Figure 3 yes Figure 2 A partial enlarged view of

[0021] Figure 4 It is a schematic diagram of the local structure of the utility model when it is installed on a test bench. Specific implementation method:

[0022] For example, see Figures 1 to 4 As shown, a radial loading device for a large thrust sliding bearing test bench includes a bearing seat 10, wherein the middle portions of the left and right side plates of the bearing seat 10 are formed with mounting through holes 11, and a half-bearing block 20 is mounted on the upper portion of the interior of the bearing seat 10;

[0023] Support blocks 12 are fixed to the front and rear side plates of the bearing seat 10, and the bottom ends of the front and rear parts of the half-bearing block 20 are close to or pressed against the top surface of the support block 12;

[0024] A central through hole is formed in the middle of the top plate of the bearing seat 10, and a push cylinder 13 is inserted into the central through hole. The top of the push cylinder 13 extends out of the top of the central through hole. The edge of the top plate of the push cylinder 13 is above the top surface of the top plate of the bearing seat 10 and is fixed to the top plate of the bearing seat 10 by bolts. A push block 14 is fixed to the bottom end of the push rod of the push cylinder 13, and the bottom surface of the push block 14 faces the middle of the top surface of the half-bearing block 20.

[0025] Furthermore, the bottom surface of the pushing block 14 is a spherical surface.

[0026] A guide extension block 15 is fixed on the inner wall of the front and rear side plates of the bearing seat 10. The inner wall of the guide extension block 15 is an arc-shaped wall surface. An arc-shaped groove is formed in the middle of the outer arc-shaped wall surface of the half-bearing block 20. The inner side of the guide extension block 15 is inserted into the arc-shaped groove. The inner wall of the guide extension block 15 is close to the inner arc-shaped wall surface of the arc-shaped groove, and the left and right sides of the inner side of the guide extension block 15 are close to the left and right inner walls of the arc-shaped groove.

[0027] A cushion block 30 is fixed on the middle bottom surface of the arc-shaped groove formed in the middle of the outer arc-shaped wall surface of the half-bearing block 20 , and the bottom surface of the push block 14 faces the top surface of the cushion block 30 .

[0028] Since the bottom surface of the pushing block 14 is a spherical surface, the contact area between the bottom surface of the pushing block 14 and the top surface of the cushion block 30 can be reduced.

[0029] Furthermore, a raised extension portion 121 is formed in the middle of the inner wall surface of the support block 12, and the bottom ends of the front and rear portions of the half-bearing block 20 are close to or pressed against the top surface of the corresponding raised extension portion 121 (in the present embodiment, when the shaft body is not installed, the bottom ends of the front and rear portions of the half-bearing block 20 rest against the top surface of the corresponding raised extension portion 121, and when the shaft body is installed, the bottom ends of the front and rear portions of the half-bearing block 20 no longer rest against the top surface of the corresponding raised extension portion 121, and there is a distance between the two).

[0030] The bearing seat 10 comprises an upper seat body 16 and a lower seat body 17. The bottom surfaces of the front and rear side plates of the upper seat body 16 are fixed with upper connecting blocks 161. The top surfaces of the front and rear side plates of the lower seat body 17 are fixed with supporting blocks 12. The top surfaces of the supporting blocks 12 are pressed against and fixedly connected with the bottom surfaces of the corresponding upper connecting blocks 161 (a sealing gasket can be clamped between the two to ensure a sealing effect). The inner end of the supporting block 12 extends into the interior of the bearing seat 10 composed of the upper seat body 16 and the lower seat body 17.

[0031] An upper semicircular concave hole extending upward is formed in the middle of the bottom surface of the left and right side plates of the upper seat body 16, and a lower semicircular concave hole extending downward is formed in the middle of the top surface of the left and right side plates of the lower seat body 17. An upper semicircular ring-shaped end cover 1 is inserted into the upper semicircular concave hole, and the upper semicircular ring-shaped end cover 1 is fixed to the corresponding left plate or right side plate of the upper seat body 16. A lower semicircular end cover 2 is inserted into the lower semicircular concave hole, and the lower semicircular end cover 2 is fixed to the corresponding left plate or right side plate of the lower seat body 17. The upper semicircular end cover 1 and the corresponding lower semicircular end cover 2 are pressed against each other up and down, and a mounting through hole 11 is formed in the middle thereof.

[0032] An oil outlet connecting pipe 3 is connected to a side plate of the lower seat body 17 , and the oil outlet connecting pipe 3 is communicated with the interior of the bearing seat 10 .

[0033] A connecting through hole extending forward and backward is formed on one of the support blocks 12, a high-pressure oil inlet pipe 40 is connected to the outer end of the connecting through hole, and an inner oil inlet pipe 41 is connected to the inner end of the connecting through hole. The inner oil inlet pipe 41 is located above the half-bearing block 20, and the oil outlet end of the inner oil inlet pipe 41 is connected to the first vertical oil inlet hole 21 formed on the left part of the top surface of the half-bearing block 20. The bottom end of the first vertical oil inlet hole 21 is communicated with the inner arc groove 22 formed in the left part of the half-bearing block 20, and the inner arc groove 22 is communicated with the axial hole 23 formed on the left side wall of the half-bearing block 20. The inner end of the axial hole 23 is communicated with the first radial oil outlet hole 24 formed in the middle part of the inner side wall of the half-bearing block 20, and a plug is fixed to the left end of the axial hole 23 for sealing;

[0034] A connecting through hole extending forward and backward is also formed on the other support block 12, and a low-pressure oil inlet head 50 is connected to the outer end of the connecting through hole, and the inner end of the connecting through hole is connected to a second inner oil inlet pipe 51, and the second inner oil inlet pipe 51 is located above the half-bearing block 20, and the oil outlet end of the second inner oil inlet pipe 51 is connected to a second vertical oil inlet hole 25 formed on the right part of the top surface of the half-bearing block 20, and the bottom end of the second vertical oil inlet hole 25 is connected to a second inner arc groove 26 formed in the right part of the half-bearing block 20, and the second inner arc groove 26 is connected to a second axial hole formed on the right side wall of the half-bearing block 20, and a plug is fixed to the right end of the second axial hole for sealing, and the inner end of the second axial hole is connected to the corresponding second radial oil outlet hole formed in the middle part of the inner wall of the half-bearing block 20.

[0035] When this embodiment is in use, it can be installed at the left and right parts of the top plate of the test bench 100. A bearing 200 to be tested is fixed in the middle of the top surface of the top plate of the test bench 100. A main shaft 300 is installed in the middle of the bearing 200 to be tested. Both ends of the main shaft 300 are connected to an extension shaft through a coupling. The extension shaft can be inserted into the two corresponding mounting through holes 11 of this embodiment. The half-bearing block 20 rests on the upper wall surface of the corresponding extension shaft, and the end of the extension shaft is installed in a rotating support mechanism installed at the left and right ends of the test bench 100 (for example, a detachable bearing seat can be installed at the left and right ends of the test bench 100, and the end of the extension shaft is installed on the inner ring of the bearing seat. It is a conventional structure and not shown in the drawings).

[0036] Then, after the extension and the main shaft 300 are rotated, the detection is started. At this time, oil is supplied through the oil supply pipe connected by the high-pressure oil supply pipe 40 and the low-pressure oil supply head 50, so that an oil film is formed between the inner wall of the half-bearing block 20 and the extension shaft to improve lubrication and prevent dry grinding;

[0037] At the same time, the push rod of the corresponding push cylinder 13 pushes, so that the bottom surface of the push block 14 is pressed against the top surface of the cushion block 30, and pressure is applied downward, so that the top surface of the inner wall of the half-bearing block 20 is lowered and pressed against the extension shaft, increasing the load. The load force is the radial loading force F=P*S (P is the cylinder pressure, S is the cylinder diameter). The pressure of the push cylinder 13 is adjustable within the design pressure range, so that a larger range of radial loading force output can be adjusted, and it is easy to operate and control.

[0038] By changing the load force, the detection conditions of different load forces can be obtained.

[0039] When disassembling it, it is only necessary to disassemble the end of the extension shaft and the two ends of the main shaft 300, and then the main shaft 300 and the measured bearing 200 can be disassembled. It is easy to disassemble and assemble, has a simple structure, significant effects, and is easy to maintain.

Claims

1. A radial loading device for a large thrust sliding bearing test bench, comprising a bearing seat (10), characterized in that: The middle parts of the left and right side plates of the bearing seat (10) are both formed with mounting through holes (11), and the upper part of the interior of the bearing seat (10) is installed with a half-bearing block (20); Support blocks (12) are fixed to the front and rear side plates of the bearing seat (10), and the bottom ends of the front and rear parts of the half-bearing block (20) are close to or pressed against the top surface of the support block (12); A central through hole is formed in the middle of the top plate of the bearing seat (10), and a push cylinder (13) is inserted into the central through hole. The top of the push cylinder (13) extends out of the top of the central through hole. The edge of the top plate of the push cylinder (13) is located above the top surface of the top plate of the bearing seat (10) and is fixed to the top plate of the bearing seat (10) by bolts. A push block (14) is fixed to the bottom end of the push rod of the push cylinder (13), and the bottom surface of the push block (14) faces the middle of the top surface of the half-bearing block (20).

2. A radial loading device for a large thrust sliding bearing test bench according to claim 1, characterized in that: The bottom surface of the pushing block (14) is a spherical surface.

3. The radial loading device of a large thrust sliding bearing test bench according to claim 1, characterized in that: A guide extension block (15) is fixed on the inner side walls of the front and rear side plates of the bearing seat (10), the inner side wall of the guide extension block (15) is an arc-shaped wall surface, and an arc-shaped groove is formed in the middle of the outer arc-shaped wall surface of the half-bearing block (20), the inner side of the guide extension block (15) is inserted into the arc-shaped groove, the inner side wall of the guide extension block (15) is close to the inner arc-shaped wall surface of the arc-shaped groove, and the left and right ends of the inner side of the guide extension block (15) are close to the left and right inner side walls of the arc-shaped groove.

4. The radial loading device of a large thrust sliding bearing test bench according to claim 1, characterized in that: A cushion block (30) is fixed on the middle bottom surface of the arc-shaped groove formed in the middle of the outer arc-shaped wall surface of the semi-bearing block (20), and the bottom surface of the push block (14) faces the top surface of the cushion block (30).

5. The radial loading device of a large thrust sliding bearing test bench according to claim 1, characterized in that: A raised extension portion (121) is formed in the middle of the inner wall surface of the support block (12), and the bottom ends of the front and rear parts of the half-bearing block (20) are close to or pressed against the top surfaces of the corresponding raised extension portions (121).

6. The radial loading device of a large thrust sliding bearing test bench according to claim 1, characterized in that: The bearing seat (10) comprises an upper seat body (16) and a lower seat body (17), the bottom surfaces of the front and rear side plates of the upper seat body (16) are fixed with upper connecting blocks (161), the top surfaces of the front and rear side plates of the lower seat body (17) are fixed with supporting blocks (12), the top surfaces of the supporting blocks (12) are pressed against and fixedly connected to the bottom surfaces of the corresponding upper connecting blocks (161), and the inner ends of the supporting blocks (12) extend into the interior of the bearing seat (10) composed of the upper seat body (16) and the lower seat body (17); An upper semicircular concave hole extending upward is formed in the middle of the bottom surface of the left and right side plates of the upper seat body (16), and a lower semicircular concave hole extending downward is formed in the middle of the top surface of the left and right side plates of the lower seat body (17). An upper semicircular ring-shaped end cover (1) is inserted into the upper semicircular concave hole, and the upper semicircular ring-shaped end cover (1) is fixed to the corresponding left side plate or right side plate of the upper seat body (16). A lower semicircular end cover (2) is inserted into the lower semicircular concave hole, and the lower semicircular end cover (2) is fixed to the corresponding left side plate or right side plate of the lower seat body (17). The upper semicircular ring-shaped end cover (1) and the corresponding lower semicircular end cover (2) are pressed against each other up and down, and a mounting through hole (11) is formed in the middle thereof.

7. A radial loading device for a large thrust sliding bearing test bench according to claim 6, characterized in that: An oil outlet connecting pipe (3) is connected to a side plate of the lower seat body (17), and the oil outlet connecting pipe (3) is connected to the interior of the bearing seat (10).

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