CN-120404144-B - Full operating mode analogue test machine of truck hub maintenance-free bearing

Abstract

The invention discloses a full-working-condition simulation testing machine for a maintenance-free bearing of a truck hub, which comprises a tool table, a servo driving system, a servo hydraulic system and a temperature control simulation system, wherein a tool seat and a main shaft movably arranged on the tool seat are arranged on the tool table, a bearing to be tested is detachably connected between the main shaft and the tool seat, the servo driving system is in linkage fit with the main shaft to simulate the actual operation working condition of the bearing, a special-shaped load plate and a core shaft are arranged on the tool table, the special-shaped load plate is in linkage fit with the core shaft, the core shaft is inserted into an inner ring shaft hole of the bearing to be tested and is detachably connected with the bearing to be tested, the servo driving system is in linkage fit with the special-shaped load plate to simulate the loading working condition of the actual operation of the bearing, and the temperature control simulation system is in linkage fit with the bearing to be tested to simulate the actual temperature working condition of the bearing. The invention solves the problem that a test device for carrying out multi-working-condition simulation test on a truck hub bearing is lacking in the prior art.

Inventors

• CHEN LONGLONG
• CHEN SIQIAN

Assignees

• 人本股份有限公司
• 上海人本集团有限公司
• 黄石人本轴承有限公司

Dates

Publication Date

20260508

Application Date

20250704

Claims (7)

1. 1. The utility model provides a truck hub maintenance-free bearing all-condition simulation test machine which characterized in that: comprises a tool table, a servo driving system, a servo hydraulic system and a temperature control simulation system, wherein the tool table is provided with a tool seat and a main shaft movably arranged on the tool seat, a bearing to be tested is detachably connected between the main shaft and the tool seat, the servo driving system is in linkage fit with the main shaft to enable the main shaft to operate and drive an outer ring of the bearing to be tested to operate synchronously so as to simulate the actual operation condition of the bearing, the tool table is provided with a special-shaped load plate and a mandrel, the special-shaped load plate is in linkage fit with the mandrel and the mandrel is in insertion fit and detachably connected with an inner ring shaft hole of the bearing to be tested, the servo driving system is in linkage fit with the special-shaped load plate and applies axial or radial or combined load to the bearing to be tested through the special-shaped load plate and the mandrel so as to simulate the load condition of the actual operation of the bearing, the temperature control simulation system is in linkage fit with the bearing to be tested and regulates and controls the environmental temperature of the bearing to be tested to simulate the actual temperature working condition of the bearing, the special-shaped load plate is rotatably provided with a transition disc, the end face of the initial end of the transition disc is provided with a connecting hole, the inner peripheral wall of the connecting hole is detachably connected with the outer ring of the bearing to be tested, the initial end of the main shaft is coaxially connected with a centering shaft, the tail end of the transition disc is coaxially connected with the centering shaft, the special-shaped load plate is formed by relatively and vertically connecting a horizontal part and a vertical part, the radial cross section of the combination of the horizontal part and the vertical part is in T-shaped arrangement, the servo hydraulic system comprises an axial loading structure and two groups of radial loading structures, the axial loading structure and the vertical part are in linkage fit to apply axial load to the special-shaped load plate through the axial loading structure, the two radial loading structures are respectively arranged at two ends of the horizontal part and are in linkage fit with the horizontal part to apply radial load to the special-shaped loading plate through the radial loading structures, the radial loading structures comprise radial loading shafts and radial loading cylinders used for driving the radial loading shafts to lift, the radial loading cylinders are arranged at the lower positions of the tool tables, the radial loading shafts are relatively vertical and connected with the horizontal part, the radial loading structures further comprise right-angle conversion components, the right-angle conversion components are composed of conversion bases, rotating shafts and right-angle plates, the right-angle plates are formed by relatively vertical connection of the transverse plates and the vertical plates, the radial sections of the right-angle plates are L-shaped, the rotating shafts penetrate through the connection positions of the transverse plates and the vertical plates, the conversion bases are arranged at the lower positions of the tool tables, the rotating shafts are rotationally connected in the conversion bases, the output ends of the radial loading cylinders are relatively vertical connected with the vertical plates, the tail ends of the radial loading shafts are relatively vertical to be connected with the transverse plates, and tension-pressure load sensors are connected between the tail ends of the radial loading shafts and the transverse plates, and the radial loading shafts are servo actuators.
2. 2. The full-working-condition simulation testing machine for the maintenance-free bearing of the truck hub is characterized in that a frame plate is arranged on the tool table, the axial loading structure comprises an axial loading cylinder movably arranged on the frame plate and an axial loading shaft coaxially connected with the output end of the axial loading cylinder, the tail end of the axial loading shaft is hinged with an axial base, and the axial base is detachably connected with the back surface of the vertical part.
3. 3. The full operating mode simulation test machine for the truck hub maintenance-free bearing is characterized in that the frame plate is arranged vertically relative to the tool table, an adjusting groove is formed in the frame plate along the height direction of the frame plate, an adjusting base is hinged to the tail end of the axial loading cylinder, the adjusting base is slidably arranged in the adjusting groove, a screw shaft is rotatably arranged in the adjusting groove, a through hole for the screw shaft to penetrate is formed in the adjusting base, the through hole is in threaded fit with the screw shaft, a driving motor for driving the screw shaft to rotate to drive the adjusting base to slide along the adjusting groove is arranged on the frame plate, and the output end of the driving motor is coaxially connected with the screw shaft.
4. 4. The full operating mode simulation test machine for the truck hub maintenance-free bearing is characterized in that the temperature control simulation system comprises a high-low temperature control machine arranged on one side of a tool table and an insulation box body arranged on the tool table, the special-shaped load plate and the bearing to be tested are arranged in the insulation box body, a temperature control pipeline is connected between the high-low temperature control machine and the insulation box body, and the high-low temperature control machine adjusts the temperature in the insulation box body through the temperature control pipeline so as to simulate the environment temperature operating mode of the bearing in actual operation.
5. 5. The full-working-condition simulation testing machine for the maintenance-free bearing of the truck hub is characterized in that the servo driving system comprises a servo motor, the servo motor is a permanent magnet servo motor, the output end of the servo motor is coaxial with the main shaft, and a torque sensor is connected between the output end of the servo motor and the main shaft.
6. 6. The full-working-condition simulation testing machine for the truck hub maintenance-free bearing is characterized in that two accompanying test seats are oppositely arranged on the tool table, through holes for the spindle to penetrate through are formed in the two accompanying test seats, the two through holes are coaxially arranged, accompanying test bearings are connected between the outer peripheral wall of the spindle and the inner peripheral walls of the two through holes, and the accompanying test bearings are paired tapered roller bearings.
7. 7. The full-working-condition simulation testing machine for the truck hub maintenance-free bearing is characterized in that a lubricating oil tank is arranged below the tool table, and the lubricating oil tank is respectively matched with two accompanying test seats in a linkage mode and is connected with a lubricating oil circulation passage so as to realize that the lubricating oil tank provides circulating lubricating oil for the surface of the main shaft.

Description

Full operating mode analogue test machine of truck hub maintenance-free bearing Technical Field The invention relates to the technical field of bearing test equipment, in particular to a full-working-condition simulation test machine for a maintenance-free bearing of a truck hub. Background In the field of commercial trucks, the performance of a maintenance-free bearing of a truck hub is directly related to the running safety, durability and reliability of a vehicle, and in order to ensure the stability of the bearing under actual working conditions, a multi-dimensional performance test is required to be performed on the bearing by a simulation test, however, the bearing test device in the prior art generally has the remarkable defects that most of the existing commercial test machines only can realize the test requirement of a single working condition, such as simulating the single condition of a temperature environment, a single directional load or a specific running speed, and the like, if the performance of the bearing under the complex working conditions (such as high-low temperature alternation, radial and axial combined load and the like) is required to be comprehensively tested, a plurality of test machines with different functions are required to be configured, and the test machines have high equipment input cost, occupy a large amount of test space, and have complicated test procedures and low efficiency. In addition, the structural design of the existing test device lacks comprehensive consideration, and the composite working condition of the bearing in actual operation is difficult to accurately simulate. For example, a part of devices cannot realize the cooperative test of temperature regulation and control, multidirectional load application and rotary motion at the same time, so that deviation exists between a test result and an actual working condition, comprehensive and reliable data support cannot be provided for design optimization of a bearing, meanwhile, a test device capable of integrating multiple test functions in one body is lacking in the prior art, and the performance evaluation requirement of the commercial truck hub maintenance-free bearing under the full working condition is difficult to meet. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a full-working-condition simulation testing machine for a maintenance-free bearing of a truck hub, and aims to solve the problem that a testing device for carrying out multi-working-condition simulation test on the truck hub bearing is lacking in the prior art. In order to achieve the aim, the invention provides a full-working-condition simulation testing machine for a truck hub maintenance-free bearing, which comprises a tool table, a servo driving system, a servo hydraulic system and a temperature control simulation system, wherein a tool seat and a main shaft movably arranged on the tool seat are arranged on the tool table, a bearing to be tested is detachably connected between the main shaft and the tool seat, the servo driving system is in linkage fit with the main shaft to enable the main shaft to operate and drive an outer ring of the bearing to be tested to synchronously operate so as to simulate the actual operating condition of the bearing, the tool table is provided with a special-shaped load plate and a mandrel, the special-shaped load plate is in linkage fit with the mandrel, the mandrel is in insertion fit with an inner ring shaft hole of the bearing to be tested and is detachably connected with the special-shaped load plate, the servo driving system is in linkage fit with the special-shaped load plate and applies axial or radial or combined load to simulate the actual operating condition of the bearing through the special-shaped load plate and the mandrel, and the temperature control simulation system is in linkage fit with the bearing to be tested so as to regulate the environmental temperature of the bearing to be tested so as to simulate the actual temperature condition of the bearing. The technical scheme is beneficial in that the testing machine in the technology integrates the tool table, the servo driving system, the servo hydraulic system and the temperature control simulation system, the servo driving system can drive the main shaft to enable the bearing outer ring to operate so as to simulate the actual operation condition, the servo hydraulic system applies axial, radial or combined load to the bearing inner ring through the special-shaped load plate and the central shaft, the actual stress state of the bearing is accurately restored, the load condition of the bearing in actual operation is simulated, the temperature of the bearing environment is regulated and controlled through the temperature control simulation system, full-condition simulation is realized, the tool table can be detachably connected with the bearing to be tested, and the quick replacement of a test piece is fa