Heavy-load low-speed bearing testing device

Abstract

The utility model provides a heavy-load low-speed bearing testing device, and belongs to the technical field of machinery. A heavy-load low-speed bearing testing device comprises a base, a plurality of first rotating shafts are rotationally arranged on the base, extrusion wheels are fixed to the first rotating shafts, gears are fixed to the first rotating shafts, and the gears on the adjacent first rotating shafts are meshed with each other; the stand columns are fixed on the base; the mounting racks are provided with sliding holes corresponding to the stand columns, the stand columns penetrate through the sliding holes, and the mounting racks slide up and down relative to the stand columns; a second rotating shaft is detachably arranged on the mounting frame, the second rotating shaft is used for being sleeved with a bearing, the outer ring of the bearing abuts against the extrusion wheel, so that a gap is formed between the mounting frame and the base, and a pressure sensor is fixed to the mounting frame; the pressing plate corresponds to the pressure sensor, and a plurality of through holes corresponding to the stand columns are formed in the pressing plate; the pressing plate is in threaded connection with the top end of the stand column through a plurality of adjusting bolts penetrating through the pressing plate through holes, and the adjusting bolts can adjust pressure applied by the pressing plate to the pressure sensor.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology, and in particular to a heavy-duty low-speed bearing testing device. Background Technology

[0002] Currently, there is a lack of high-performance long-term load durability testing devices on the market. Ordinary load durability testing cannot meet the company's needs. Existing load testing methods mainly fall into two categories: directly adding counterweights or applying pressure through hydraulic devices. Adding counterweights presents problems such as inconvenient operation and limited counterweight placement; while using hydraulic devices faces the dilemma of high cost. Based on this, a heavy-duty low-speed bearing testing device is proposed. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a heavy-load, low-speed bearing testing device that features convenient testing, low cost, and a wide range of adjustable pressure.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A heavy-duty low-speed bearing testing device, comprising:

[0006] A base, on which a plurality of first rotating shafts are rotatably mounted, a pressing wheel is fixed on the first rotating shaft, a gear is fixed on the first rotating shaft, and the gears on adjacent first rotating shafts mesh with each other;

[0007] Several columns, which are fixed to the base;

[0008] A plurality of mounting brackets are provided, each mounting bracket having a sliding hole corresponding to a column, the column passing through the sliding hole and the mounting bracket sliding up and down relative to the column; a second rotating shaft is detachably provided on the mounting bracket, the second rotating shaft being used to sleeve a bearing and the outer ring of the bearing abutting against a compression wheel, so that a gap is formed between the mounting bracket and the base; a pressure sensor is fixed on the mounting bracket.

[0009] A pressure plate, corresponding to the pressure sensor, has several through holes corresponding to the columns; the pressure plate is connected to the top of the columns by several adjusting bolts passing through the channels of the pressure plate, and the adjusting bolts can adjust the pressure applied by the pressure plate to the pressure sensor.

[0010] In the above-mentioned heavy-duty low-speed bearing testing device, two first upright plates are provided on the base, and corresponding first mounting holes are opened on the two first upright plates. The first rotating shaft passes through the two first mounting holes, and the extrusion wheel is installed between the first rotating shaft and located between the two first upright plates.

[0011] In the above-mentioned heavy-duty low-speed bearing testing device, the mounting frame is provided with two second upright plates, which correspond to the first upright plate and are positioned above the first upright plate. The second upright plate is provided with second mounting holes, and the second rotating shaft passes through the two second mounting holes. The bearing is located between the two second upright plates.

[0012] In the above-mentioned heavy-duty low-speed bearing testing device, two positioning rings are sleeved on the second rotating shaft. The positioning rings are located between the two second vertical plates, and a gap is formed between the two positioning rings for bearing installation.

[0013] In the above-mentioned heavy-duty low-speed bearing testing device, when the pressure sensor and the pressure plate cannot make contact, a pad is placed between the pressure sensor and the pressure plate.

[0014] The aforementioned heavy-duty low-speed bearing testing device also includes a drive device, which is connected to one of the first rotating shafts and is used to drive the first rotating shaft to rotate.

[0015] In the above-mentioned heavy-duty low-speed bearing testing device, the driving device includes a drive motor, a reducer, and a transmission shaft. The drive motor is connected to the transmission shaft through the reducer, and the transmission shaft is coaxially connected to one of the first rotating shafts.

[0016] In the above-mentioned heavy-load low-speed bearing testing device, a support foot is fixed at the lower end of the base.

[0017] Compared with the prior art, this application has the following advantages:

[0018] The pressure plate is threaded to the top of the column via an adjusting bolt. When the adjusting bolt is rotated, the pressure plate applies pressure to the pressure sensor, which then transmits the pressure to the mounting bracket, causing the mounting bracket to move downward. This increases the contact force between the outer ring of the bearing and the extrusion wheel, creating the load required for the test. As the extrusion wheel rotates, it drives the outer ring of the bearing to rotate, thus achieving the durability test of the heavy-duty, low-speed bearing. At the same time, the pressure sensor can monitor the applied pressure in real time to accurately control the test load. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram in this application;

[0020] Figure 2 This is a three-dimensional structural diagram of the other side of this application;

[0021] Figure 3 This is a three-dimensional structural diagram of the mounting bracket after its position has been changed in this application;

[0022] Figure 4 This is a three-dimensional structural diagram of the mounting bracket and pressure plate after they have been removed in this application;

[0023] Figure 5 This is a side view of a bearing after installation in this application;

[0024] In the picture,

[0025] 100. Bearings;

[0026] 2. Base; 21. First upright plate; 211. First mounting hole; 22. First rotating shaft; 221. Gear; 23. Extrusion wheel; 24. Support foot;

[0027] 3. Column; 31. Adjusting bolt;

[0028] 4. Mounting bracket; 41. Second upright plate; 42. Second rotating shaft; 421. Positioning ring; 43. Pressure sensor;

[0029] 5. Pressure plate;

[0030] 6. Spacer blocks;

[0031] 7. Drive unit; 71. Drive motor; 72. Reducer; 73. Drive shaft. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figures 1 to 5 As shown, a heavy-duty low-speed bearing 100 testing device includes: a base 2, several columns 3, several mounting brackets 4, and a pressure plate 5. Several first rotating shafts 22 are rotatably mounted on the base 2. A pressing wheel 23 is fixed on each of the first rotating shafts 22, and a gear 221 is fixed on each of the first rotating shafts 22. The gears 221 on adjacent first rotating shafts 22 mesh with each other. The columns 3 are fixed on the base 2. The mounting brackets 4 have sliding holes corresponding to the columns 3, through which the columns 3 pass and the mounting brackets 4 slide up and down relative to the columns 3. The mounting brackets 4 have detachable... A second rotating shaft 42 is provided, on which a bearing 100 is fitted and the outer ring of the bearing 100 abuts against the extrusion wheel 23, so that a gap is formed between the mounting frame 4 and the base 2. A pressure sensor 43 is fixed on the mounting frame 4. A pressure plate 5 corresponds to the pressure sensor 43, and several through holes corresponding to the columns 3 are opened on the pressure plate 5. Several adjusting bolts 31 pass through the through holes of the pressure plate 5 and are threaded to the top of the columns 3. The adjusting bolts 31 can adjust the pressure applied by the pressure plate 5 to the pressure sensor 43.

[0034] When the device is started, the first rotating shaft 22 on the base 2 begins to rotate. Since the gears 221 on the adjacent first rotating shafts 22 mesh with each other, this meshing structure allows power to be transmitted between each first rotating shaft 22, thereby driving all the extrusion rollers 23 to rotate synchronously. At this time, the bearing 100 to be tested is sleeved on the second rotating shaft 42, and the outer ring of the bearing 100 abuts against the extrusion roller 23. The mounting bracket 4 is sleeved on the column 3 through the sliding hole and can slide up and down relative to the column 3. The pressure plate 5 is threaded to the top of the column 3 through the adjusting bolt 31. When the adjusting bolt 31 is rotated, the pressure plate 5 will apply pressure to the pressure sensor 43. The pressure sensor 43 will then transmit the pressure to the mounting bracket 4, causing the mounting bracket 4 to move downward, thereby increasing the abutment force between the outer ring of the bearing 100 and the extrusion roller 23, forming the load required for the test. During the rotation of the extrusion roller 23, it will drive the outer ring of the bearing 100 to rotate, thereby realizing the durability test of the heavy-duty low-speed bearing 100. At the same time, the pressure sensor 43 can monitor the applied pressure in real time in order to accurately control the test load.

[0035] In this application, there are three mounting brackets 4, and each mounting bracket 4 is provided with two second rotating shafts 42, which can test six bearings 100 at the same time.

[0036] Specifically, the base 2 is provided with two first upright plates 21, and the two first upright plates 21 are provided with corresponding first mounting holes 211. The first rotating shaft 22 passes through the two first mounting holes 211, and the extrusion wheel 23 is installed between the first rotating shaft 22 and located between the two first upright plates 21.

[0037] Two first upright plates 21 are fixed to the base 2, and support the first rotating shaft 22 through corresponding first mounting holes 211, forming a fixed support structure at both ends, which has good support capacity. The first rotating shaft 22 can be detached from the first upright plates 21.

[0038] Specifically, the mounting bracket 4 is provided with two second upright plates 41, which correspond to the first upright plate 21 and are positioned above the first upright plate 21. The second upright plate 41 is provided with second mounting holes, through which the second rotating shaft 42 passes. The bearing 100 is located between the two second upright plates 41.

[0039] When the outer ring of bearing 100 abuts against extrusion wheel 23, the test load is transmitted to the second vertical plate 41 through the second rotating shaft 42. The second rotating shaft 42 is supported by two corresponding second support holes, forming a fixed support structure at both ends, which has good support capacity.

[0040] Specifically, the second bearing 100 is fitted with two positioning rings 421, which are located between the two second upright plates 41, and the two positioning rings 421 form a gap for the bearing 100 to be installed.

[0041] The outer side of the positioning ring 421 is close to or in contact with the second vertical plate 41. In this case, the bearing 100 will not shift its position during the test after it comes into contact with the extrusion wheel 23. The positioning hole can rest against the inner ring of the bearing 100 without affecting the test results. The size of the positioning hole can be replaced according to the size of the bearing 100, as long as it ensures that the bearing 100 will not slide arbitrarily and can rest against the extrusion wheel 23. The second bearing 100 can be pulled out from the second vertical plate 41.

[0042] Specifically, when the pressure sensor 43 cannot make contact with the pressure plate 5, a pad 6 is provided between the pressure sensor 43 and the pressure plate 5.

[0043] When the diameter of the bearing 100 is different, the height of the mounting bracket 4 is also different, which causes the pressure sensor 43 to be unable to contact the pressure plate 5. Therefore, a pad 6 needs to be set so that the pressure sensor 43 can indirectly contact the pressure plate 5, thereby adjusting the pressure through the pressure plate 5.

[0044] Specifically, it also includes a drive device 7, which is connected to one of the first rotating shafts 22 and is used to drive the first rotating shaft 22 to rotate.

[0045] Specifically, the drive device 7 includes a drive motor 71, a reducer 72, and a transmission shaft 73. The drive motor 71 is connected to the transmission shaft 73 through the reducer 72, and the transmission shaft 73 is coaxially connected to one of the first rotating shafts 22.

[0046] The drive motor 71 serves as a power source, generating rotational power upon energization. Its high-speed rotational motion is first transmitted to the reducer 72. The reducer 72 reduces the motor speed through the meshing of the internal gear set 221, while simultaneously increasing the torque according to the corresponding transmission ratio, so that the output torque meets the driving force requirements of the heavy-duty low-speed bearing 100 test. The power after reduction and torque amplification is transmitted to the transmission shaft 73. The transmission shaft 73 is coaxially connected to one of the first rotating shafts 22, thus directly transmitting the power to the first rotating shaft 22. Since the gears 221 on adjacent first rotating shafts 22 mesh with each other, when one first rotating shaft 22 starts to rotate under the drive of the transmission shaft 73, the power will be transmitted sequentially to other adjacent first rotating shafts 22 through the meshing of the gears 221, thereby driving all the first rotating shafts 22 to rotate synchronously, so that the extrusion rollers 23 mounted on the first rotating shafts 22 rotate at the same speed.

[0047] Specifically, a support foot 24 is fixed to the lower end of the base 2.

[0048] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0049] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0050] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0051] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from this utility model or exceeding the scope defined by the appended claims.

Claims

1. A heavy-load, low-speed bearing testing device, characterized in that, include: A base (2) is provided with a plurality of first rotating shafts (22) rotatably mounted on the base (2). A pressing wheel (23) is fixed on the first rotating shaft (22). A gear (221) is fixed on the first rotating shaft (22). The gears (221) on adjacent first rotating shafts (22) mesh with each other. Several columns (3) are fixed on the base (2); A plurality of mounting brackets (4) are provided, each mounting bracket (4) having a sliding hole corresponding to a column (3), the column (3) passing through the sliding hole and the mounting bracket (4) sliding up and down relative to the column (3); a second rotating shaft (42) is detachably provided on the mounting bracket (4), the second rotating shaft (42) is used to sleeve a bearing (100) and the outer ring of the bearing (100) abuts against the extrusion wheel (23) so that a gap is formed between the mounting bracket (4) and the base (2), and a pressure sensor (43) is fixed on the mounting bracket (4). The pressure plate (5) corresponds to the pressure sensor (43). The pressure plate (5) has several through holes corresponding to the column (3). The pressure plate (5) is threaded to the top of the column (3) through several adjusting bolts (31) passing through the through holes of the pressure plate (5). The adjusting bolts (31) can adjust the pressure applied by the pressure plate (5) to the pressure sensor (43).

2. The heavy-load low-speed bearing testing device according to claim 1, characterized in that, Two first upright plates (21) are provided on the base (2), and the two first upright plates (21) are provided with corresponding first mounting holes (211). The first rotating shaft (22) passes through the two first mounting holes (211), and the extrusion wheel (23) is installed between the first rotating shaft (22) and located between the two first upright plates (21).

3. The heavy-load low-speed bearing testing device according to claim 2, characterized in that, The mounting bracket (4) is provided with two second upright plates (41), which correspond to the first upright plate (21) and are located above the first upright plate (21). The second upright plate (41) is provided with second mounting holes, and the second rotating shaft (42) passes through the two second mounting holes. The bearing (100) is located between the two second upright plates (41).

4. The heavy-load low-speed bearing testing device according to claim 3, characterized in that, Two positioning rings (421) are fitted on the second rotating shaft (42). The positioning rings (421) are located between the two second upright plates (41), and the two positioning rings (421) form a gap for the installation of the bearing (100).

5. The heavy-load low-speed bearing testing device according to claim 1, characterized in that, When the pressure sensor (43) and the pressure plate (5) cannot make contact, a pad (6) is provided between the pressure sensor (43) and the pressure plate (5).

6. The heavy-load low-speed bearing testing device according to claim 1, characterized in that, It also includes a drive device (7), which is connected to one of the first rotating shafts (22) and is used to drive the first rotating shaft (22) to rotate.

7. The heavy-load low-speed bearing testing device according to claim 6, characterized in that, The drive device (7) includes a drive motor (71), a reducer (72), and a transmission shaft (73). The drive motor (71) is connected to the transmission shaft (73) through the reducer (72). The transmission shaft (73) is coaxially connected to one of the first rotating shafts (22).

8. The heavy-load low-speed bearing testing device according to claim 1, characterized in that, The lower end of the base (2) is fixed with a support foot (24).

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