CN216695579U

CN216695579U - Bearing testing device

Info

Publication number: CN216695579U
Application number: CN202220239995.7U
Authority: CN
Inventors: 刘华; 李胜; 麻成标; 邱宇; 林喜; 潘成福; 李洪滔; 李鹏华
Original assignee: China Railway Construction Heavy Industry Group Co Ltd
Current assignee: China Railway Construction Heavy Industry Group Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-06-07
Anticipated expiration: 2032-01-28

Abstract

The utility model discloses a bearing testing device, which comprises a cast iron platform, a supporting assembly, a rotating assembly and a cantilever assembly, wherein the cast iron platform is arranged on the supporting assembly; the cantilever assembly comprises a mounting seat, a cantilever and a tension sensing part; the bearing to be tested is supported by the supporting component, and the static ring of the bearing can be fixed; the cantilever is detachably arranged, so that the cantilevers with different lengths can be conveniently replaced according to bearings with different diameters, the universality is high, the end part of the cantilever is connected with the rotating ring of the bearing through the tension sensing part, the rotating assembly drives the cantilever and the rotating ring to rotate, and the value measured by the tension sensing part can be subjected to information processing through the external control system to obtain the starting torque.

Description

Bearing testing device

Technical Field

The utility model relates to the field of bearing testing, in particular to a bearing testing device.

Background

The turntable bearing is a large bearing with a special structure which can bear large comprehensive loads such as axial load, radial load, overturning moment and the like at the same time and integrates multiple functions of supporting, rotating, transmitting, fixing and the like, the turntable bearing is widely applied, engineering machinery is the place where the turntable bearing is applied most widely at first, the turntable bearing generally works in a severe environment, the working frequency is high, the turntable bearing usually bears large impact and load in the running process, and various faults occur occasionally, so that the reliability and the safety of the turntable bearing in working are guaranteed to be crucial.

The starting torque is the torque required by the relative rotation of the inner and outer races of the turntable bearing, before installation and application, the torque of the turntable bearing needs to be measured to measure the reliability and safety of the operation of the turntable bearing, if the tested starting torque is larger than the specified starting torque, the test shows that the rolling elements are selected too big, the gap between the inner and outer races is too small, the rotation of the turntable bearing is not smooth, the rolling elements are worn and generate heat, and meanwhile, the test can also measure whether the bearing clearance is proper or not through testing the parameters such as temperature rise, vibration, noise and the like of the turntable bearing in the operation process, so that the comprehensive performance test before the installation and application of the turntable bearing is indispensable work and directly influences the service life of the turntable bearing and the construction safety of machinery.

In the prior art, a manual measurement method is generally adopted, wrenches with different specifications are needed for turntable bearings with different specifications, and the detection efficiency is low; depending on manual skill experience, the result of the detected starting torque is inaccurate, so that unqualified slewing bearings flow into the market to be used, and quality accidents are caused.

In summary, a bearing testing device is urgently needed to solve the problem of bearing detection of different specifications in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bearing testing device to solve the problem of bearing detection of different specifications in the prior art, and the specific technical scheme is as follows:

a bearing testing device comprises a cast iron platform, a supporting assembly, a rotating assembly and a cantilever assembly;

the support assembly is arranged on the cast iron platform and is used for supporting and stabilizing a static ferrule of the bearing; the rotary component is arranged on the cast iron platform and is coaxial with the bearing; the cantilever assembly comprises a mounting seat, a cantilever and a tension sensing part; the mounting seat is arranged on the rotary component; the cantilever is detachably arranged on the mounting seat; the tension sensing piece is arranged on the cantilever and connected with the rotating ring of the bearing, and the cantilever and the rotating ring are driven to rotate through the rotating assembly.

Preferably, the cantilever assembly further comprises a pressure plate and a plurality of groups of threaded top fastening pieces; the mounting seat is provided with a mounting groove; the cantilever is arranged in the mounting groove; the pressure plate is arranged on the mounting seat and used for pressing the cantilever; and the multiple groups of threaded jacking pieces are respectively in threaded connection with the mounting seat and the pressing plate and used for jacking the cantilever.

Preferably, the cantilever is of a telescopic structure; the cantilever comprises a plurality of groups of cantilever single pieces which are sleeved in a sliding way; in two adjacent groups of cantilever singlets, a group of cantilever singlets is equipped with the screw hole along its length direction, is equipped with the connecting hole on another group of cantilever singlets, realizes fixing between two adjacent groups of cantilever singlets through bolt, connecting hole and screw hole.

The technical scheme is preferable, and the device comprises a plurality of groups of supporting components; the multiple groups of supporting assemblies are arranged on the cast iron platform around the axial direction of the rotating assembly, and the bearings are horizontally arranged on the supporting assemblies.

Preferably, in the above technical solution, the support assembly includes a support table and a fixing member; the support table is arranged on the cast iron platform; the supporting platform is provided with a plurality of groups of fixing holes along the radial direction of the bearing, the fixing piece is arranged in the fixing holes, and the fixing piece is abutted to the rotating ring of the bearing, so that the rotating ring is stable.

Preferably, the rotating assembly comprises a central support, and a driving part, a speed reducer, a bearing seat and a self-aligning bearing which are arranged in the central support; the output end of the driving piece is connected with the input end of the speed reducer, the output end of the speed reducer is provided with a self-aligning bearing, and the self-aligning bearing is installed in the bearing seat; the output end of the speed reducer is connected with the mounting seat and used for driving the mounting seat to rotate.

Above technical scheme is preferred, install first flange on the output of reduction gear, the second flange is installed to the mount pad lower extreme, first flange and second flange fixed connection.

The preferable technical scheme also comprises a temperature sensor, a vibration acceleration sensor and a noise sensor; the temperature sensor and the vibration acceleration sensor are both arranged on the bearing; the noise sensor is used for detecting the rotating noise of the bearing.

Above technical scheme is preferred, the cast iron platform includes a plurality of cast iron platform singlets, can dismantle between a plurality of cast iron platform singlets and connect.

The technical scheme of the utility model has the following beneficial effects:

(1) the bearing testing device comprises a cast iron platform, a supporting assembly, a rotating assembly and a cantilever assembly; the cantilever assembly comprises a mounting seat, a cantilever and a tension sensing part; the bearing to be tested is supported by the supporting component, and the static ring of the bearing can be fixed; the cantilever is detachably arranged, so that the cantilevers with different lengths can be conveniently replaced according to bearings with different diameters, the universality is high, the end part of the cantilever is connected with the rotating ring of the bearing through the tension sensing part, the rotating assembly drives the cantilever and the rotating ring to rotate, and the value measured by the tension sensing part can be subjected to information processing through the external control system to obtain the starting torque.

(2) The cantilever assembly of the present invention further comprises a pressure plate and a plurality of sets of threaded jacking members; the installation seat is provided with the installation groove, so that the cantilever can be conveniently and quickly installed when being replaced; the clamp plate can guarantee that the cantilever is compressed tightly in the mounting groove to push up the cantilever tightly in the mounting groove through multiunit screw top spare, guarantee the stability of cantilever when rotating. The preferred cantilever is the retractable structure, can match the specification of the bearing that awaits measuring.

(3) The bearing to be tested can be stably supported by the multiple groups of supporting assemblies, the fixing piece of each supporting assembly can abut against the static ferrule of the bearing from the radial direction, so that the static ferrule and the rotating ferrule can rotate relatively conveniently, and the supporting assemblies can fix the bearings with different external diameter specifications by arranging the multiple groups of fixing holes or arranging the fixing pieces on the supporting table in a sliding manner.

(4) The self-aligning bearing is arranged to bear radial load, and can bear certain axial load, so that the self-aligning performance is good, and the coaxiality error can be compensated.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In the drawings:

FIG. 1 is an overall schematic view of a bearing testing apparatus of the present embodiment;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the boom assembly of FIG. 1;

FIG. 4 is a schematic half-section view of the swivel assembly of FIG. 1 (without the central support shown);

wherein, 1, a cast iron platform; 2. a support assembly; 2.1, supporting the platform; 2.2, fixing parts; 2.2a, fixing holes; 3. a swivel assembly; 3.1, a central support; 3.2, a driving piece; 3.3, a speed reducer; 3.3a, the output end of the speed reducer; 3.4, bearing seats; 3.5, a self-aligning bearing; 4. a cantilever assembly; 4.1, mounting seats; 4.2, a cantilever; 4.21, a first bolt; 4.3, a tension sensing piece; 4.4, pressing a plate; 5. a bearing; 5.1, a static ring of the bearing; 5.2, a rotating ring of the bearing; 6. a temperature sensor; 7. a vibration acceleration sensor; 8. a noise sensor.

Detailed Description

Embodiments of the utility model will be described in detail below with reference to the drawings, but the utility model can be implemented in many different ways, which are defined and covered by the claims.

Example (b):

a bearing testing device comprises a cast iron platform 1, a supporting component 2, a rotating component 3 and a cantilever component 4, as shown in figures 1 to 4, the bearing testing device comprises the following components:

as shown in fig. 1 and 2, the cast iron platform 1 of the embodiment is used for bearing various components, can provide high flatness, and facilitates the disassembly of the various components; the cast iron platform 1 of this embodiment is preferably split type design, and cast iron platform 1 includes a plurality of cast iron platform singlets, forms wholly through dismantling the connection between a plurality of cast iron platform singlets for the cast iron platform 1 of this embodiment can be assembled according to actual conditions. The reference bolt connection can be detachably connected here.

As shown in fig. 1 and 2, the support assemblies 2 are arranged on the cast iron platforms 1, and multiple sets of cast iron platforms 1 are arranged around the axial direction of the rotating assembly 3 (i.e. the axial direction of the bearing), and the present embodiment illustrates six sets of support assemblies 2 arranged at equal intervals.

The support assembly 2 of the present embodiment is specifically as follows:

as shown in fig. 1 and 2, the support assembly 2 includes a support table 2.1 and a fixing member 2.2 (e.g., a fixing bolt); the supporting table 2.1 is arranged on the cast iron platform 1, and one end of the supporting table 2.1 is fixed on the outer wall of the rotary component 3 (particularly the central support 3.1); the supporting table 2.1 is provided with a plurality of groups of fixing holes 2.2a (such as threaded holes) along the radial direction of the bearing 5, before the bearing 5 is tested, the bearing 5 is horizontally placed on the supporting table 2.1, the fixing piece 2.2 is connected in the fixing holes 2.2a, and the fixing piece 2.2 is in contact with the static ring 5.1 (namely the outer ring) of the bearing, so that the static ring 5.1 of the bearing is fixed.

The rotary component 3 is arranged on the cast iron platform 1, and the rotary component 3 and the bearing 5 to be tested are coaxially arranged; the rotating assembly 3 includes a central support 3.1, a driving member 3.2 (such as an electric motor or a hydraulic motor), a speed reducer 3.3, a bearing seat 3.4, and a self-aligning bearing 3.5, as shown in fig. 1 and 4, as follows:

the central support 3.1 is arranged on the cast iron platform 1, and the central support 3.1 and the bearing to be tested are coaxially arranged; the driving piece 3.2, the speed reducer 3.3 and the bearing seat 3.4 are all fixedly arranged in the central support 3.1, the output end of the driving piece 3.2 is connected with the input end of the speed reducer 3.3, and the driving piece 3.2 is used for providing initial power for the rotation of the bearing 5; the output end 3.3a of the speed reducer is provided with a self-aligning bearing 3.5, and the self-aligning bearing 3.5 is arranged in a bearing seat 3.4; the output end 3.3a of the speed reducer is connected with the cantilever assembly 4 (specifically, the mounting seat 4.1), so that the cantilever assembly 4 and the rotating ring 5.2 (i.e., the inner ring) of the bearing can be driven to rotate horizontally.

As shown in fig. 1 and 3, the cantilever assembly 4 includes a mounting seat 4.1, a cantilever 4.2, a tension sensing member 4.3, a pressure plate 4.4, and a plurality of sets of threaded tightening members (e.g., tightening bolts); the mount pad 4.1 is connected on the output 3.3a of reduction gear, and the concrete connection mode is: a first flange is arranged on the output end 3.3a of the speed reducer, a second flange is arranged at the lower end of the mounting seat 4.1, and the first flange is fixedly connected with the second flange; the mounting seat 4.1 is provided with a mounting groove, one end of the cantilever 4.2 is mounted in the mounting groove, the pressing plate 4.4 is mounted on the upper end surface of the mounting groove through a bolt, the pressing plate 4.4 is used for pressing the cantilever 4.2 in the mounting groove, and the multiple groups of threaded tightening pieces are respectively in threaded connection with the pressing plate 4.4 and the side wall of the mounting groove and are used for tightening the cantilever 4.2 in the mounting groove, so that the stability of the cantilever 4.2 is realized; the one end tip that the mounting groove was kept away from to cantilever 4.2 is equipped with first bolt 4.21, installs the second bolt on the rotation lasso 5.2 terminal surface of bearing, and first bolt 4.21 and second bolt are connected respectively at the both ends of pulling force sensing part 4.3 (like force sensor), and cantilever 4.2 rotates to rotate through the rotation lasso 5.2 rotation of pulling force sensing part 4.3 pulling bearing, pulling force sensing part 4.3 measures the starting torque of bearing 5. In addition, the cantilever 4.2 can also be fixed directly on the mounting 4.1 by means of a screw connection.

Preferably, cantilever 4.2 is the retractable structure, is convenient for match the bearing 5 of different specifications, and the retractable structure specifically is: the cantilever 4.2 comprises a plurality of groups of cantilever single pieces which are mutually sleeved in a sliding manner (two groups are taken as examples in the embodiment), and the plurality of groups of cantilever single pieces which are sleeved in a sliding manner are convenient for adjusting the overall length of the cantilever 4.2, so that bearings 5 with different specifications are matched; in two sets of cantilever singlets that the bearing is radially adjacent, a set of cantilever singlets is equipped with the multiunit screw hole along its length direction, is equipped with the connecting hole on another group cantilever singlets, thereby the bolt setting realizes the firm of two sets of cantilever singlets in connecting hole and screw hole, can change cantilever 4.2's overall length through the screw hole of bolted connection different positions on the cantilever singlets promptly. The connection relationship between the cantilever single piece and other parts is as follows: a group of cantilever single-piece sets up in the mounting groove, and the tip of a group of cantilever single-piece that keeps away from the mounting groove is equipped with first bolt 4.21.

The present embodiment further comprises a control system, a temperature sensor 6, a vibration acceleration sensor 7 and a noise sensor 8; the tension sensing part 4.3, the driving part 3.2, the temperature sensor 6, the vibration acceleration sensor 7 and the noise sensor 8 are all connected with the control system, and the control system acquires relevant numerical values through the sensors and can reflect the comprehensive performance of the bearing 5 to be measured. The control system is referred to the prior art.

As shown in fig. 2, the temperature sensor 6, the vibration acceleration sensor 7, and the noise sensor 8 are mounted at the following positions: temperature sensors 6 are respectively arranged in a plurality of lubricating oil holes of a static ring 5.1 of the bearing; arranging vibration acceleration sensors 7 at the position of the soft belt of the bearing to be measured and the radial opposite position; the noise sensor 8 is arranged close to the bearing to be measured, preferably on the central support 3.1, for measuring the noise of the bearing 5 during rotation.

The working principle of the bearing testing device of the embodiment is as follows:

1. the bearing 5 to be tested is horizontally placed on the supporting table 2.1, and the fixing piece 2.2 is abutted against the static ferrule 5.1 of the bearing, so that the stability of the static ferrule is realized;

2. selecting a proper length of the cantilever 4.2 according to the specification of the bearing to be detected or adjusting the whole length of the cantilever 4.2 through a cantilever single piece sleeved in a sliding way, and connecting a tension sensing part 4.3 between a first bolt 4.21 at the end part of the cantilever 4.2 and a second bolt on a rotating ring 5.2 of the bearing;

3. the control system controls the driving part 3.2 to act, the cantilever 4.2 and the rotating ring are driven to rotate through the driving part 3.2, corresponding numerical values collected by the sensors are transmitted to the control system, and the control system reflects the test performance of the bearing to be tested through the related numerical values.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The bearing testing device is characterized by comprising a cast iron platform (1), a supporting assembly (2), a rotating assembly (3) and a cantilever assembly (4);

the support component (2) is arranged on the cast iron platform (1) and is used for supporting and stabilizing a static ring (5.1) of the bearing; the rotary component (3) is arranged on the cast iron platform (1) and is coaxial with the bearing (5);

the cantilever assembly (4) comprises a mounting seat (4.1), a cantilever (4.2) and a tension sensing part (4.3); the mounting seat (4.1) is arranged on the rotary component (3); the cantilever (4.2) is detachably arranged on the mounting seat (4.1); the tension sensing piece (4.3) is arranged on the cantilever (4.2), the tension sensing piece (4.3) is connected with the rotating ferrule (5.2) of the bearing, and the cantilever (4.2) and the rotating ferrule are driven to rotate through the rotating component (3).

2. The bearing testing apparatus according to claim 1, wherein the cantilever assembly (4) further comprises a pressure plate (4.4) and a plurality of sets of threaded tightening members; the mounting seat (4.1) is provided with a mounting groove; the cantilever (4.2) is arranged in the mounting groove; the pressure plate (4.4) is arranged on the mounting seat (4.1) and is used for pressing the cantilever (4.2); the multiple groups of threaded jacking pieces are respectively in threaded connection with the mounting base (4.1) and the pressing plate (4.4) and used for jacking the cantilever (4.2).

3. Bearing testing device according to claim 2, characterized in that the cantilever (4.2) is of a telescopic construction; the cantilever (4.2) comprises a plurality of groups of cantilever single pieces which are sleeved in a sliding way; in two adjacent groups of cantilever singlets, a group of cantilever singlets is equipped with the screw hole along its length direction, is equipped with the connecting hole on another group of cantilever singlets, realizes fixing between two adjacent groups of cantilever singlets through bolt, connecting hole and screw hole.

4. Bearing testing device according to claim 1, characterized by comprising a plurality of sets of support assemblies (2); the multiple groups of supporting assemblies (2) are arranged on the cast iron platform (1) around the axial direction of the rotating assembly (3), and the bearings (5) are horizontally arranged on the supporting assemblies (2).

5. Bearing testing device according to claim 4, characterized in that the support assembly (2) comprises a support table (2.1) and a fixture (2.2); the supporting platform (2.1) is arranged on the cast iron platform (1); supporting bench (2.1) are equipped with multiunit fixed orifices (2.2a) along the radial of bearing, and mounting (2.2) set up in fixed orifices (2.2a), and mounting (2.2) are inconsistent with rotation lasso (5.2) of bearing, realize rotating the firm of lasso.

6. Bearing testing device according to claim 1, characterized in that the swivel assembly (3) comprises a central support (3.1) and a drive (3.2), a reducer (3.3), a bearing block (3.4) and a self-aligning bearing (3.5) arranged in the central support (3.1); the output end of the driving piece (3.2) is connected with the input end of the speed reducer (3.3), the output end (3.3a) of the speed reducer is provided with a self-aligning bearing (3.5), and the self-aligning bearing (3.5) is arranged in the bearing seat (3.4); the output end (3.3a) of the speed reducer is connected with the mounting seat (4.1) and used for driving the mounting seat (4.1) to rotate.

7. The bearing testing device according to claim 6, characterized in that a first flange is mounted on the output end (3.3a) of the speed reducer, a second flange is mounted at the lower end of the mounting seat (4.1), and the first flange and the second flange are fixedly connected.

8. The bearing testing device according to claim 1, further comprising a temperature sensor (6), a vibration acceleration sensor (7) and a noise sensor (8); the temperature sensor (6) and the vibration acceleration sensor (7) are arranged on the bearing (5); the noise sensor (8) is used for detecting the rotating noise of the bearing.

9. Bearing testing device according to claim 1, characterized in that the cast iron platform (1) comprises a plurality of cast iron platform singlets with detachable connections between them.