CN206177518U - Automobile wheel hub bearing unit sealing washer sealing performance testing machine - Google Patents

Abstract

The utility model discloses an automobile wheel hub bearing unit sealing washer sealing performance testing machine, including the frame, still include rack -mounted spindle unit, simulation bearing parts, inclination maneuver mechanism and contain the experimental mud pit of interveneeing mud, the spindle unit includes motor and main shaft, and motor and spindle drive connect, and the main shaft can be around the swing of the pivot in the main part of frame top, simulation bearing parts installs in the main part including simulation outer lane, sealing washer and simulation inner circle, simulation outer lane, and the simulation inner circle is installed on the main shaft, and the relative position of simulation outer lane and simulation inner circle confirms, installs the sealing washer between simulation outer lane and the simulation inner circle, inclination maneuver mechanism includes inclination fine -tuning and swing arm, and when adjustment inclination fine -tuning, swing arm, motor and main shaft revolute the axle and rotate in pivot department for the main part, produces the inclination between the axis of simulation outer lane and the axis of simulation inner circle. The utility model discloses can be through the experimental working life who obtains the sealing performance of reflection sealing washer.

Description

Automobile hub bearing unit sealing ring sealing performance testing machine

technical field

The utility model relates to a sealing performance testing machine for an automobile hub bearing unit sealing ring.

Background technique

The working environment of the automobile hub bearing is harsh. Both sides of the hub bearing are sealed with special sealing rings to prevent dust, water, mud and other foreign matter from entering the inside of the bearing, thereby polluting and corroding the internal raceways and rolling elements of the hub bearing, thereby Guarantee the working performance and service life of the bearing. Therefore, the sealing performance of the sealing ring is particularly important for the hub bearing.

The structure of the automobile hub bearing: the automobile hub bearing is composed of an inner ring, an outer ring and two rows of rolling elements. The two rows of rolling elements are between the inner ring and the outer ring. The relative positional relationship, that is, the axis of the inner ring and the axis of the outer ring in a normal state are consistent, and the inner ring and the outer ring can rotate relatively around the axis. A complete automobile hub bearing has two sealing rings, which are respectively installed on the outer sides of the two rows of rolling elements. Its function is to prevent foreign matter such as dust, water, mud, etc. There is a raceway on the part where the body contacts, and a raceway is also provided on the part where the outer ring and the two rows of rolling bodies contact), to avoid corrosion and wear of the rolling body and the raceway.

Automobile hub bearing seals are dynamic seals, that is, seals between parts with relative motion, and the seal rings on both sides are contact seals, which will wear out and fail when they work for a long time. The sealing performance of the sealing ring can be expressed by the running time of the sealing ring from continuous operation to sealing failure under certain working conditions. At present, the common test method for evaluating the sealing performance of the sealing ring is to test on the actual bearing, and the tested hub bearing is subjected to a timed running test under the condition of mud water intervention, that is, the test running time reaches the preset value , it will stop automatically, manually disassemble the tested bearing, and observe whether there are traces of mud water entering the bearing (because both sides of the actual bearing are sealed, only by destroying the bearing can the state of the sealing ring be detected, otherwise it is difficult to judge the sealing ring whether it fails). If there are no traces of mud water inside the bearing, it means that the seal ring has not failed, but it is not known how long the seal ring can still work; if there are traces of mud water inside the bearing, it means that the seal ring has failed, and it is still unknown Specific effective working hours. Therefore, this test method and test equipment cannot detect whether the sealing ring fails in real time, and thus cannot clearly know how long the sealing ring has been running before it fails, that is, it is impossible to know the sealing performance of the sealing ring.

Contents of the invention

In order to overcome the problem that the prior art method cannot detect the failure of the sealing ring in real time, the utility model provides a sealing performance testing machine for the sealing ring of the automobile hub bearing unit. The actual working state and working process of the sealing ring are simulated by the testing machine. The problem of detecting whether the sealing ring fails in real time is solved, and the working life reflecting the sealing performance of the sealing ring can be obtained through the test.

The technical scheme that the utility model adopts is:

The sealing performance testing machine of the sealing ring of the automobile hub bearing unit includes a frame, and is characterized in that: it also includes a main shaft component installed on the frame, a simulated bearing component, an inclination adjustment mechanism and a mud pool filled with test intervention mud;

The main shaft component includes a motor and a main shaft, the motor and the main shaft are connected by transmission, and the main shaft can swing around the rotating shaft on the main body above the frame;

The simulated bearing component includes a simulated outer ring, a sealing ring and a simulated inner ring, the simulated outer ring is mounted on the main body, the simulated inner ring is mounted on the main shaft, and the The simulated inner ring rotates with the main shaft; the relative position of the simulated outer ring and the simulated inner ring is determined, and the simulated outer ring and the simulated inner ring rotate relatively; the distance between the simulated outer ring and the simulated inner ring is The sealing ring is installed;

Described inclination adjustment mechanism comprises inclination fine-tuning mechanism and swing arm, and described inclination fine-adjustment mechanism is connected with the lower end of described swing arm, and the upper end of described swing arm is connected with described motor, and described inclination fine-adjustment mechanism It is used to adjust the inclination of the swing arm; when adjusting the inclination fine-tuning mechanism, the swing arm, the motor and the main shaft rotate around the rotating shaft relative to the main body at the rotating shaft, the axis of the simulated outer ring and the The inclination angle is generated between the axes of the simulated inner ring described above.

It also includes a controller and a sensor installed on the frame to detect the leakage of the mud involved in the test, and the controller is respectively connected with the motor and the sensor.

There are sealing rings on both sides of each automobile hub bearing. The two sealing rings are tested separately, and the installation and operation of the sealing ring are realized by simulating the outer ring and the simulating inner ring, so as to solve the problem of real-time detection of whether the sealing ring is invalid. question.

In the actual bearing, the sealing ring is installed between the outer ring and the inner ring of the bearing. In the utility model, the outer ring of the bearing is replaced by the simulated outer ring, the inner ring of the bearing is replaced by the inner ring of the simulation, and the sealing ring is installed between the inner and outer rings of the simulation. The position of the simulated inner ring relative to the simulated outer ring is exactly the same as that of the bearing inner ring relative to the bearing outer ring during actual work, and the size, fit and surface roughness of the working parts of the seal ring, the simulated inner ring and the simulated outer ring Completely consistent, there are rolling elements between the outer and inner rings of the actual bearing, and the utility model has no direct connection between the simulated inner and outer rings.

In the actual bearing, the relative position between the bearing inner ring and the bearing outer ring is determined, thus ensuring the actual working state of the sealing ring. This requires the testing machine to try to make the relative positions of the simulated outer ring and the simulated inner ring determined. The utility model installs the simulated outer ring on the main body of the testing machine, and installs the simulated inner ring on the main shaft of the testing machine. The main body of the test machine and the main shaft of the testing machine have a definite relative position, thus ensuring that the relative position of the simulated outer ring and the simulated inner ring is also determined.

In the actual work of the hub bearing, due to the action of external force, the outer ring of the bearing and the inner ring of the bearing are not coaxial as in the ideal state. In order to reflect the effect of the actual load on the hub bearing, the axis of the outer ring of the bearing and the axis of the inner ring of the bearing may have an inclination angle, the utility model can realize the inclination angle of the axis of the main body of the testing machine and the axis of the main shaft of the testing machine through the adjustment mechanism, so that The axis of the simulated outer ring and the axis of the simulated inner ring can also produce the same inclination angle, and the size of the inclination angle can be adjusted by the adjustment mechanism.

During the actual operation of the hub bearing, it reflects the relative rotation between the outer ring of the bearing and the inner ring of the bearing. The simulated outer ring of the utility model does not move with the main body of the testing machine, and the simulated inner ring rotates with the main shaft of the testing machine, thereby realizing the relative rotation of the simulated outer ring and the simulated inner ring.

The beneficial effects of the utility model are reflected in:

1. The utility model simulates the actual working state and working process of the sealing ring through the testing machine, solves the problem of real-time detection of whether the sealing ring is invalid, and can obtain the working life reflecting the sealing performance of the sealing ring through the test.

2. Carry out a simulation test on the outer sealing ring and inner sealing ring of the bearing unit separately.

3. The utility model installs the simulated outer ring on the main body of the testing machine, and installs the simulated inner ring on the main shaft of the testing machine. Since the main body of the testing machine and the main shaft of the testing machine have a definite relative position, the simulated outer ring is guaranteed. The relative positions of the circle and the simulated inner circle are also determined.

4. Due to the actual work, the axis of the outer and inner rings of the bearing will have a certain inclination angle, and the adjustment range required for this inclination angle is very small. The utility model has designed a precision micro-inclination angle adjustment mechanism, which can adjust the axis of the main shaft of the testing machine and the axis of the main body of the testing machine. The inclination angle between them, so that the axis of the simulated inner ring and the axis of the simulated outer ring can also produce the same inclination angle at the center of the inclination.

5. The simulated outer ring of the utility model does not move with the main body of the testing machine, and the simulated inner ring rotates with the main shaft of the testing machine, thereby realizing the relative rotation of the simulated outer ring and the simulated inner ring.

Description of drawings

Fig. 1 is the schematic diagram of the sealing performance testing machine of the sealing ring of the automobile hub bearing of the utility model.

Fig. 2 is a schematic side view of the utility model testing machine.

detailed description

Referring to Fig. 1 and Fig. 2, the sealing performance test machine of the sealing ring of the automobile hub bearing unit includes the frame, and also includes the main shaft component installed on the frame 1, the simulated bearing component, the inclination adjustment mechanism and the mud pool filled with the mud involved in the test 12;

The main shaft part includes a motor 7 and a main shaft 8, the motor 7 and the main shaft 8 are connected in transmission, and the main shaft 8 can swing around the rotating shaft 4 on the main body above the frame 1;

The simulated bearing component includes a simulated outer ring 9, a sealing ring 10 and a simulated inner ring 11, the simulated outer ring 9 is installed on the main body 5, and the simulated inner ring 11 is installed on the main shaft 8, and the simulated inner ring 11 rotates with the main shaft 7; the relative position of the simulated outer ring 9 and the simulated inner ring 11 is determined, and the simulated outer ring 9 and the simulated inner ring 11 rotate relatively ; The sealing ring 10 is installed between the simulated outer ring 9 and the simulated inner ring 11;

Described inclination adjustment mechanism comprises inclination fine adjustment mechanism 13 and swing arm 2, and described inclination angle fine adjustment mechanism 13 is connected with the lower end of described swing arm 2, and the upper end of described swing arm 2 is connected with described motor 7, The inclination fine-tuning mechanism 13 is used to adjust the inclination of the swing arm 2; when the inclination fine-adjustment mechanism 13 is adjusted, the swing arm 2, the motor 7 and the main shaft 8 rotate around the rotating shaft 4 relative to the main body 5 The rotating shaft 4 rotates, and an inclination angle is generated between the axis of the simulated outer ring 9 and the axis of the simulated inner ring 11 .

It also includes a controller 6 and a sensor 3 installed on the frame 1 for detecting mud leakage during test intervention. The controller 6 is connected to the motor 7 and the sensor 3 respectively.

There are sealing rings on both sides of each automobile hub bearing. The two sealing rings are tested separately, and the installation and operation of the sealing ring are realized by simulating the outer ring and the simulating inner ring, so as to solve the problem of real-time detection of whether the sealing ring is invalid. question.

In the actual bearing, the sealing ring is installed between the outer ring and the inner ring of the bearing. In the utility model, the outer ring of the bearing is replaced by the simulated outer ring, the inner ring of the bearing is replaced by the inner ring of the simulation, and the sealing ring is installed between the inner and outer rings of the simulation. The position of the simulated inner ring relative to the simulated outer ring is exactly the same as that of the bearing inner ring relative to the bearing outer ring during actual work, and the size, fit and surface roughness of the working parts of the seal ring, the simulated inner ring and the simulated outer ring Completely consistent, there are rolling elements between the outer and inner rings of the actual bearing, and the utility model has no direct connection between the simulated inner and outer rings.

In the actual bearing, the relative position between the bearing inner ring and the bearing outer ring is determined, thus ensuring the actual working state of the sealing ring. This requires the testing machine to try to make the relative positions of the simulated outer ring and the simulated inner ring determined. The utility model installs the simulated outer ring on the main body of the testing machine, and installs the simulated inner ring on the main shaft of the testing machine. The main body of the test machine and the main shaft of the testing machine have a definite relative position, thus ensuring that the relative position of the simulated outer ring and the simulated inner ring is also determined.

In the actual work of the hub bearing, due to the action of external force, the outer ring of the bearing and the inner ring of the bearing are not coaxial as in the ideal state. In order to reflect the effect of the actual load on the hub bearing, the axis of the outer ring of the bearing and the axis of the inner ring of the bearing may have an inclination angle, the utility model can realize the inclination angle of the axis of the main body of the testing machine and the axis of the main shaft of the testing machine through the adjustment mechanism, so that The axis of the simulated outer ring and the axis of the simulated inner ring can also produce the same inclination angle, and the size of the inclination angle can be adjusted by the adjustment mechanism.

During the actual operation of the hub bearing, it reflects the relative rotation between the outer ring of the bearing and the inner ring of the bearing. The simulated outer ring of the utility model does not move with the main body of the testing machine, and the simulated inner ring rotates with the main shaft of the testing machine, thereby realizing the relative rotation of the simulated outer ring and the simulated inner ring.

The experimental steps of the present embodiment testing machine are as follows:

1. Install the bearing outer sealing ring or inner sealing ring between the simulated outer ring 9 and the simulated inner ring 11 .

2. Adjust the working inclination angle of this test through the inclination angle fine-tuning mechanism 13 .

3. The motor 7 is controlled by the controller 6 to start rotating, and the test is carried out.

4. When the test sealing ring has wear and leakage, the sensor 3 will transmit the leakage information to the controller 6, and the controller 6 controls the motor 7 to stop rotating. After the test is over, the working time of the sealing ring can be obtained .

The content described in the embodiments of this specification is only an enumeration of the implementation forms of the inventive concept, and the protection scope of the present utility model should not be regarded as limited to the specific forms stated in the embodiments, and the protection scope of the present utility model also extends to this invention. Equivalent technical means that those skilled in the art can think of according to the concept of the utility model.

Claims (2)

1. automobile hub bearing sealing ring tightness energy testing machine, including frame, it is characterised in that：Also include being arranged on machine Spindle unit on frame, simulation parts of bearings, dip angle adjusting mechanism and fill the mud pit of experiment intervention mud；

Described spindle unit includes motor and main shaft, described motor and described spindle drive connection, and described main shaft can Shaft swing in the main body above frame；

Described simulation parts of bearings includes simulation outer ring, sealing ring and simulation inner ring, and described simulation outer ring is arranged on described Main body on, described simulation inner ring is arranged on described main shaft, and described simulation inner ring is with described main axis； Described simulation outer ring and the relative position of simulation inner ring determine that described simulation outer ring relatively rotates with simulation inner ring；It is described Simulation outer ring and simulation inner ring between described sealing ring is installed；

Described dip angle adjusting mechanism includes inclination angle trimming regulating mechanism and swing arm, described inclination angle trimming regulating mechanism and described swing arm Lower end connects, the upper end of described swing arm and described motor connection, and described inclination angle trimming regulating mechanism is used to adjust inclining for swing arm Angle；When the inclination angle trimming regulating mechanism described in adjustment, described swing arm, motor and main shaft are turning around described rotating shaft relative to main body Rotated at axle, inclination angle is produced between the described axis of simulation outer ring and the axis of described simulation inner ring.

2. automobile hub bearing sealing ring tightness energy testing machine as claimed in claim 1, it is characterised in that：Also include Controller and the rack-mounted sensor for being used to detect experiment intervention mud leakage situation, described controller respectively with Described motor, sensor connection.