CN114018578A

CN114018578A - Variable mud testing machine for sealed bearing

Info

Publication number: CN114018578A
Application number: CN202111116513.5A
Authority: CN
Inventors: 覃锐; 李四军; 胡纪强; 吴世平; 胡杰; 张维伟
Original assignee: NINGBO DONGHUANG BEARING CO Ltd
Current assignee: NINGBO DONGHUANG BEARING CO Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-02-08

Abstract

The invention discloses a variable mud testing machine for a sealed bearing, which comprises a plurality of testing bearings, a box body, a bearing driving device, a mud spraying device and a water tank, wherein the box body is provided with a plurality of sealing grooves; the mounting plate is arranged in the box body, the top surface of the mounting plate is fixedly connected with a plurality of test belt wheel shafts, the test belt wheel shafts are respectively and fixedly connected with inner rings of a plurality of test bearings, an outer ring of each test bearing is sleeved with a test belt wheel, the test belt wheels are in transmission connection through the same first belt, and the bearing driving device is used for being in transmission connection with the first belt to drive the test bearings to rotate, so that the working efficiency is improved; the slurry spraying device comprises a plurality of slurry spray heads, each slurry spray head corresponds to each test bearing one by one, and each slurry spray head is used for spraying slurry to the corresponding test bearing; be equipped with the return water mouth on the mounting panel, the water tank is linked together through the wet return with the return water mouth so that mud on the mounting panel flows back to the water tank along the wet return in, resources are saved.

Description

Variable mud testing machine for sealed bearing

Technical Field

The invention relates to a variable mud testing machine for a sealed bearing.

Background

The Bearing (Bearing) is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The massage friction property can be divided into a rolling bearing and a sliding bearing, and can be divided into an open bearing and a closed bearing according to the sealing performance, wherein the closed bearing is divided into a contact type sealing bearing and a non-contact type sealing bearing, and for the closed bearing, the sealing performance is one of the most important technical indexes for measuring the sealing performance of the bearing. The sealing performance can be met through a static sealing oil leakage test and a common dynamic sealing oil leakage test, but the sealing performance of the bearing under the working condition of slurry far exceeds the requirement of the common sealing performance, and after the bearing is installed, when the bearing is rotated at a high speed, a customer can prevent external slurry, water vapor, dust and the like from entering the interior through the contact part of the bearing sealing ring and the inner ring notch to cause abnormal failure of the bearing.

The closed bearing comprises an outer ring, an inner ring, rolling bodies, a retainer, a sealing element and lubricating grease. In a severe slurry environment, slurry enters the bearing, lubricating grease is damaged, sand in the slurry easily enters gaps, the service life of the bearing is seriously damaged, and potential safety hazards are brought to a vehicle in running, so that the sealing performance of the bearing in use must be met while the service life of the bearing is met under a plurality of working conditions. However, the sealing performance of the bearing can only be actually and effectively tested through a simulation test or actual working condition, and in view of the above problems, a test device for testing the sealing performance of the sealed bearing under the mud working condition is urgently needed.

Disclosure of Invention

The invention aims to solve the technical problem of providing a variable mud testing machine for a sealed bearing, which can realize the simultaneous test of a plurality of sets of test bearings and improve the working efficiency.

In order to solve the technical problem, the invention provides a variable mud testing machine for a sealed bearing, which comprises a plurality of testing bearings, a box body, a bearing driving device, a mud spraying device and a water tank, wherein the box body is provided with a plurality of grooves; the box body is internally provided with an installation plate, the top surface of the installation plate is fixedly connected with a plurality of test belt wheel shafts, the test belt wheel shafts are respectively and fixedly connected with the inner rings of a plurality of test bearings, the outer ring of each test bearing is sleeved with a test belt wheel, the test belt wheels are in transmission connection through a first belt, and the bearing driving device is used for being in transmission connection with the first belt to drive the test bearings to rotate; the slurry spraying device comprises a plurality of slurry spray heads, the plurality of slurry spray heads correspond to the plurality of test bearings one by one, and each slurry spray head is used for spraying slurry to the corresponding test bearing.

As preferred, bearing drive include a action wheel shell, an action wheel main shaft and a driving motor, the action wheel shell pass through the bolt fastening on the mounting panel, the action wheel main shaft run through the action wheel shell along the axis direction of action wheel shell, be equipped with two transmission bearings between action wheel main shaft and the action wheel shell, the top of action wheel main shaft be equipped with a first action wheel, first action wheel be connected with a plurality of experimental bearings of drive and rotate with first belt drive, the bottom of action wheel main shaft be equipped with a second action wheel, driving motor's output be equipped with a third action wheel, second action wheel be connected through second belt drive with the third action wheel.

Preferably, the mud sprinkler still include a water pump motor and an inlet tube, inlet tube one end be used for being linked together with the water tank, water pump motor be used for carrying the mud in the water tank to the inlet tube in, the other end of inlet tube extend to the inside of box, a plurality of mud shower nozzles all set up on the inlet tube, and a plurality of mud shower nozzles all set up the inside at the box, the mounting panel on be equipped with a return water mouth, the water tank be linked together through a return water pipe with the return water mouth, mud shower nozzle spun mud fall on the mounting panel and along the return water pipe in the return water tank.

Preferably, the water tank is provided with a stirring motor, and the stirring motor is used for driving the impeller to stir the slurry in the water tank.

Preferably, the mounting plate is provided with a driven wheel, the driven wheel is in transmission connection with the first belt, and the driven wheel is used for tightly pressing the first belt to adjust the tightness of the first belt.

After adopting the structure, compared with the prior art, the invention has the following advantages: the test belt wheels and the first driving wheel are in transmission connection through the same first belt, a plurality of slurry nozzles are arranged on the slurry spraying device and correspond to the test bearings one by one, each slurry nozzle is used for spraying slurry to the corresponding test bearing, so that a plurality of sets of test bearings are tested simultaneously, the working efficiency is improved, the test speed can be controlled by changing the rotating speed of the driving motor, a return port on the mounting plate is communicated with the water tank through a return pipe, the slurry falling on the mounting plate flows back to the water tank along the return pipe, the slurry in the water tank is reused, resources are saved, the first belt is tightly pressed by adjusting the position of the driven wheel on the mounting plate, the friction force between the first belt and the test belt wheels and the first driving wheel is ensured, and therefore, the condition that the bearing driving device slips when driving the test belt wheels to rotate can be prevented, the bearing quality is better guaranteed, the use safety and reliability are improved, the structure is simple, the transmission is stable, and the bearing is suitable for popularization.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 2, a variable mud testing machine for sealed bearings comprises a plurality of test bearings 1, a box body 10, a bearing driving device 20, a mud spraying device 30 and a water tank 40, wherein the water tank 40 and the box body 10 are welded by stainless steel materials; the inside of the box body 10 is provided with an installation plate 11, the top surface of the installation plate 11 is fixedly connected with a plurality of test belt pulley shafts 12, the plurality of test belt pulley shafts 12 are respectively and fixedly connected with the inner rings of a plurality of test bearings 1, the outer ring of each test bearing 1 is sleeved with a test belt pulley 13, the plurality of test belt pulleys 13 are in transmission connection through a first belt 14, and the bearing driving device 20 is used for being in transmission connection with the first belt 14 to drive the plurality of test bearings 1 to rotate, so that the plurality of test bearings 1 can be tested simultaneously, and the working efficiency is improved; the slurry spraying device 30 comprises a plurality of slurry spray nozzles 31, the plurality of slurry spray nozzles 31 are used for corresponding to the plurality of test bearings 1 one by one, each slurry spray nozzle 31 is used for spraying slurry to the corresponding test bearing 1, therefore, the positions of water flow and water spray required by the test can be controlled by adjusting the position and the size of each slurry spray nozzle 31, each slurry spray nozzle 31 corresponds to each test bearing 1 one by one, and different test results can be realized;

bearing drive device 20 include a action wheel shell 21, an action wheel main shaft 22 and a driving motor 23, action wheel shell 21 pass through the bolt fastening on mounting panel 11, action wheel main shaft 22 run through action wheel shell 21 along the axis direction of action wheel shell 21, be equipped with two transmission bearings 24 between action wheel main shaft 22 and the action wheel shell 21, the top of action wheel main shaft 22 be equipped with a first action wheel 25, first action wheel 25 be connected with the transmission of first belt 14 and rotate in order to drive a plurality of experimental bearings 1, the bottom of action wheel main shaft 22 be equipped with a second action wheel 26, driving motor 23's output be equipped with a third action wheel 231, second action wheel 26 be connected through the transmission of second belt 27 with third action wheel 231, like this, can drive action wheel main shaft 22 through driving motor 23 and rotate, thereby action wheel main shaft 22 drives first action wheel 25 and rotates, and last first action wheel 25 drives a plurality of test bearing 1 simultaneously and rotates, realizes testing many sets of test bearing 1 simultaneously, has improved work efficiency, can also control experimental speed through the rotational speed that changes driving motor 23.

The slurry spraying device 30 further comprises a water pumping motor 32 and a water inlet pipe 33, one end of the water inlet pipe 33 is communicated with the water tank 40, the water pumping motor 32 is used for conveying slurry in the water tank 40 into the water inlet pipe 33, the other end of the water inlet pipe 33 extends into the box body 10, the plurality of slurry spray heads 31 are all arranged on the water inlet pipe 33, the plurality of slurry spray heads 31 are all arranged inside the box body 10, the water pumping motor 32 pumps the slurry in the water tank 40 into the water inlet pipe 33 and conveys the slurry into each slurry spray head 31 corresponding to the position of the test bearing 1 one by one along the water inlet pipe 33, the position and the size of each slurry spray head 31 are adjusted to control water flow and water spraying position required by the test, finally, the sprayed slurry falls on the mounting plate 11, a water return port 111 is arranged on the mounting plate 11, the water tank 40 is communicated with the water return port 111 through a water return pipe 50, so that the slurry on the mounting plate 11 flows back to the water return pipe along the water return pipe In the water tank 40, like this, can realize the mud used repeatedly in the water tank 40, realize cyclic utilization, resources are saved.

The water tank 40 is provided with a stirring motor 41, and the stirring motor 41 is used for driving the impeller to stir the slurry in the water tank 40, so that the slurry can be prevented from sinking to the bottom and the test result can be prevented from being influenced.

The mounting plate 11 is provided with a driven wheel 60, the driven wheel 60 is in transmission connection with the first belt 14, the driven wheel 60 is used for pressing the first belt 14 to adjust the tightness of the first belt 14, and thus the position of the driven wheel 60 on the mounting plate 11 can be adjusted to press the first belt 14, so that the friction force between the first belt 14 and the plurality of test belt wheels 13 and the first driving wheel 25 can be ensured, and the bearing driving device 20 can be prevented from slipping when driving the plurality of test belt wheels 13 to rotate.

The working principle is as follows: firstly, test mud prepared by loess, sand and water according to a certain proportion is stored in a water tank 40, a water pumping motor 32 and a stirring motor 41 are arranged on the water tank 40, the mud is pumped into a water inlet pipe 33 through the water pumping motor 32, a plurality of mud spray heads 31 are arranged on the water inlet pipe 33, a mounting plate 11 is arranged inside a box body 10, a plurality of test belt wheel shafts 12 are fixedly connected to the top surface of the mounting plate 11, the test belt wheel shafts 12 are respectively and fixedly connected with the inner rings of a plurality of test bearings 1, a test belt wheel 13 is sleeved on the outer ring of each test bearing 1, a plurality of test belt wheels 13 are in transmission connection through a first belt 14, a bearing driving device 20 is in transmission connection with the first belt 14 to drive a plurality of test bearings 1 to rotate, the plurality of mud spray heads 31 are in one-to-one correspondence with the plurality of test bearings 1, and the water flow and water spray position required by the test are controlled by adjusting the position and size of each mud spray head 31, finally, the sprayed slurry falls on the mounting plate 11 and is sent back to the water tank 40 along the water return pipe 50, recycling is achieved, resources are saved, a driven wheel 60 is arranged on the mounting plate 11, the position of the driven wheel 60 on the mounting plate 11 is adjusted to tightly press the first belt 14, friction force between the first belt 14 and the plurality of test belt wheels 13 and the first driving wheel 25 is guaranteed, and the bearing driving device 20 can be prevented from slipping when the plurality of test belt wheels 13 are driven to rotate.

The above description is only about the preferred embodiment of the present invention, but it should not be understood as limiting the claims, and the present invention may be modified in other structures, not limited to the above structures. In general, all changes which come within the scope of the invention as defined by the independent claims are intended to be embraced therein.

Claims

1. A variable mud testing machine for a sealed bearing is characterized by comprising a plurality of testing bearings (1), a box body (10), a bearing driving device (20), a mud spraying device (30) and a water tank (40); the testing device is characterized in that a mounting plate (11) is arranged in the box body (10), a plurality of testing belt wheel shafts (12) are fixedly connected to the top surface of the mounting plate (11), the testing belt wheel shafts (12) are respectively and fixedly connected with inner rings of a plurality of testing bearings (1), an outer ring of each testing bearing (1) is sleeved with a testing belt wheel (13), the testing belt wheels (13) are in transmission connection through a first belt (14), and the bearing driving device (20) is used for being in transmission connection with the first belt (14) to drive the testing bearings (1) to rotate; the mud spraying device (30) comprises a plurality of mud spray nozzles (31), the mud spray nozzles (31) correspond to the test bearings (1) one by one, and each mud spray nozzle (31) is used for spraying mud to the corresponding test bearing (1).

2. The variable mud testing machine for the sealed bearing according to claim 1, wherein the bearing driving device (20) comprises a driving wheel housing (21), a driving wheel spindle (22) and a driving motor (23), the driving wheel housing (21) is fixed on the mounting plate (11) through bolts, the driving wheel spindle (22) penetrates through the driving wheel housing (21) along the axial direction of the driving wheel housing (21), two transmission bearings (24) are arranged between the driving wheel spindle (22) and the driving wheel housing (21), a first driving wheel (25) is arranged at the top of the driving wheel spindle (22), the first driving wheel (25) is in transmission connection with the first belt (14) to drive the plurality of test bearings (1) to rotate, a second driving wheel (26) is arranged at the bottom of the driving wheel spindle (22), the output end of the driving motor (23) is provided with a third driving wheel (231), and the second driving wheel (26) is in transmission connection with the third driving wheel (231) through a second belt (27).

3. The variable mud testing machine for sealed bearings according to claim 1, the mud spraying device (30) also comprises a water pumping motor (32) and a water inlet pipe (33), one end of the water inlet pipe (33) is communicated with the water tank (40), the water pumping motor (32) is used for conveying the slurry in the water tank (40) into the water inlet pipe (33), the other end of the water inlet pipe (33) extends to the interior of the box body (10), the plurality of slurry spray heads (31) are all arranged on the water inlet pipe (33), a plurality of slurry nozzles (31) are all arranged inside the box body (10), a water return opening (111) is arranged on the mounting plate (11), the water tank (40) is communicated with the water return opening (111) through a water return pipe (50), the slurry sprayed by the slurry spray head (31) falls on the mounting plate (11) and flows back to the water tank (40) along the water return pipe (50).

4. The variable mud testing machine for the sealed bearing according to claim 1, wherein the water tank (40) is provided with a stirring motor (41), and the stirring motor (41) is used for driving the impeller to stir the mud in the water tank (40).

5. The variable mud testing machine for the sealed bearing is characterized in that a driven wheel (60) is arranged on the mounting plate (11), the driven wheel (60) is used for being in transmission connection with the first belt (14), and the driven wheel (60) is used for pressing the first belt (14) to adjust the tightness of the first belt (14).