CN207181033U - A kind of Gear Fault Diagnosis testing stand - Google Patents

Abstract

It the utility model is related to a kind of Gear Fault Diagnosis testing stand, including base（1）, in base（1）On be fixedly connected mutually corresponding to motor（2）, gear-box（3）And brake（4）, motor（2）Tooth connection roller box（3）, in gear-box（3）Output end connection gear group（5）, gear train（5）Connecting brake（4）, in gear-box（3）On be fixedly connected with vibrating sensor device（7）；In base（1）On be also connected with static controller（6）, controller（6）Control connection motor（2）.The advantages of the utility model：The present apparatus can diagnose to the various faults in gear drive, gear being capable of quick-replaceable, can simulated failure gear with carry and Light Condition under vibration signal, the gear of one to three different faults is changed according to actual conditions, so as to obtain the vibration signal of single fault vibration signal and different faults synthesis superposition.

Description

A Gear Fault Diagnosis Test Bench

technical field

The utility model relates to the technical field of gear fault detection, in particular to a gear fault diagnosis test bench.

Background technique

Gear transmission is the most widely used form of transmission in mechanical transmission. Due to its long-term exposure to various alternating loads, impacts and frictions in the working process or its own defects left in the manufacturing process, it is prone to Failure or even damage, and for the gear transmission system that has a failure, it will generate noise, accelerate equipment wear and reduce equipment life, and seriously damage the equipment directly, affect production, and bring economic losses, especially for some special important applications. Occasionally, once the equipment fails, the loss is immeasurable. Therefore, in order to minimize the economic loss caused by these uncertain gear mechanical failures, we need to make a diagnosis in the early stage of the failure, so as to provide a scientific basis for early arrangement of maintenance. Analyzing gear vibration signals is a more scientific and applicable method.

For gearbox fault diagnosis, the most fundamental task is to identify the state of the gearbox by analyzing and processing the observation signals of the gearbox. To a certain extent, it can also be said that the gearbox fault diagnosis is the state recognition of the gearbox. The identification of gearbox faults needs to be based on a certain theoretical basis, so the research and analysis of relevant theories is the premise of fault identification; It is a single or a combination of several types of faults, but there are many types of gear faults, and it is basically impossible to appear simultaneously in a gearbox in practical applications, and the types of faults to be designed in theoretical research should be as many as possible, so At this stage, an experimental device that can simultaneously include multiple gear faults is needed for current research.

Utility model content

The purpose of this utility model is to solve the defect that only one type of fault can be detected in the current stage of gear transmission fault diagnosis research, and multiple faults cannot be detected at the same time, and a gear fault diagnosis test bench is proposed.

In order to achieve the above object, the utility model adopts the following technical solutions:

A gear fault diagnosis test bench is characterized in that it includes a base on which a motor, a gear box and a brake corresponding to each other are fixedly connected, the motor is connected to the gear box, the output end of the gear box is connected to a gear set, and the gear set is connected to the brake. Fixedly connect the vibration sensor device on the gearbox;

A fixed controller is also connected to the base, and the controller controls the connected motor.

On the basis of above-mentioned technical scheme, can have following further technical scheme:

The gear box adopts a planetary gear box, which includes a box body, a planet carrier connected to the motor is arranged in the box body, a group of planetary gears are connected on the planet carrier, and ring gears are socketed outside the planetary gears;

There are also a main output shaft and a group of transition shafts in the box body. The first transmission gear and the second transmission gear are sleeved on the main output shaft. The first transmission gear meshes with the planetary gear. A first transition gear and a second transition gear are socketed, and each first transition gear meshes with the second transmission gear;

A set of slave output shafts is also provided in the box body, each of which is sleeved with a third transmission gear, and each third transmission gear meshes with the corresponding second transition gear.

There are openings on opposite sides of the box body, one of the openings is connected to the input end cover, and the other opening is connected to the output end cover, the planet carrier is supported and fixed on the input end cover, and the main output The shaft, the transition shaft and the slave output shaft are supported and fixed on the output end cover.

The gear set includes a driving gear and a parallel gear meshing with each other, and the driving gear and the parallel gear are both arranged on the outside of the box.

The planet carrier includes two parallel splints, a set of connecting rods are arranged between the two splints, one of the splints is connected to the rotating shaft, and the other splint is provided with a through hole.

The vibration sensor device includes a T-shaped fixing plate, and a mounting hole is provided on three adjacent surfaces of the fixing plate, and a vibration sensor is fixedly connected in each mounting hole.

The brake uses a magnetic powder brake, and the controller uses a frequency converter and a PL controller to control the speed of the motor.

The utility model has the advantages of:

1. This device is capable of diagnosing various faults in gear transmission, and the gears can be replaced quickly, meeting the demand for frequent replacement of parts in research work.

2. Through the loading of the magnetic powder brake, the vibration signal of the faulty gear under load and no load can be simulated.

3. Multiple identical shafts are installed in parallel in the gearbox, and one to three gears with different faults are replaced according to the actual situation, so as to obtain a single fault vibration signal and a comprehensive superimposed vibration signal of different faults.

4. The start, stop and running speed of the motor are automatically controlled through the PLC internal control program, and the speed of the motor can also be adjusted manually, and closed-loop feedback control is performed.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Figure 2 is an exploded schematic view of the gearbox;

Fig. 3 is a structural schematic diagram of a vibration sensor device.

Detailed ways

In order to make the utility model clearer, the device will be described in detail below in conjunction with the accompanying drawings. The specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1, a gear fault diagnosis test bench provided by the utility model includes a base 1, on which a motor 2, a gear box 3 and a brake 4 corresponding to each other are fixedly connected, and the motor 2 is connected to the gear box 3. The output end of the gear box 3 is connected to the gear set 5, the gear set 5 is connected to the brake 4, the vibration sensor device 7 is fixedly connected to the gear box 3, and the fixed controller 6 is also connected to the base 1, and the controller 6 is connected to the motor 2. The brake 4 uses a magnetic powder brake, and the controller 6 uses a frequency converter and a PLC controller to control the speed of the motor 2 .

The gear box 3 adopts a planetary gear box, which includes a box body 3a, and openings 3b are provided on opposite sides of the box body 3a, and one of the openings 3b is matched with the input end cover 23, and the other opening 3b is matched with the output The end cover 24 is provided with a planetary carrier 8 connected to the motor 2 in the box body 3a. The planetary carrier 8 includes two parallel splints 19, and a set of connecting rods 20 is arranged between the two splints 19, one of which is 19 is connected to the rotating shaft 21, another splint 19 is provided with a through hole 22, the rotating shaft 21 is installed on the input end cover 23 through the bearing seat, and the rotating shaft 21 is connected to the output shaft of the motor 2 through a coupling.

Three planetary gears 9 are arranged between the two clamping plates 19 of the planetary carrier 8, and the three planetary gears 9 are arranged on the same circumference with the center of the clamping plate 19 as a circle, and each planetary gear 9 is connected and fixed by a gear shaft. On the two splints 19 , the ring gear 10 is sleeved on the outer sides of the three planetary gears 9 .

The main output shaft 11 and three transition shafts 14 are also arranged in the box body 3a. Both sides of the main output shaft 11 are respectively fixed on the corresponding splint 19 and the output end cover 24 through a bearing seat. The first transmission gear 12 and the second transmission gear 13 are sleeved on it, the first transmission gear 12 is arranged in the middle of the three planetary gears 9 , and the first transmission gear 12 meshes with the three planetary gears 9 . A first transition gear 15 and a second transition gear 16 are sleeved on each transition shaft 14 , and each first transition gear 15 meshes with a corresponding second transmission gear 13 .

There is also a set of secondary output shafts 17 in the box body 3a, each of which is sleeved with a third transmission gear 18, and each third transmission gear 18 is meshed with the corresponding second transition gear 16 . The main output shaft 11 , the transition shaft 14 and the secondary output shaft 17 are supported and fixed on the output end cover 24 .

The gear set 5 includes a driving gear 25 and a parallel gear 26 that mesh with each other. The driving gear 25 and the parallel gear 26 are both arranged on the outside of the box body 3a. The driving gear 25 is sleeved on the main output shaft 11, each parallel The gears 26 are all sleeved on the corresponding slave output shafts 17 , and the driving gear 25 is arranged among the three parallel gears 26 .

The two-stage parallel gear transmission and one-stage planetary gear transmission adopted by the gearbox 3 meet the needs of different types of gear transmission methods in gear fault diagnosis. At the same time, this structural design is easy to disassemble. Only the upper box body needs to be opened. Replace all internal parts to meet the need for frequent parts replacement during failure research.

Described vibration sensor device 7 comprises T-shaped fixed plate 27, is all provided with a mounting hole on three adjacent faces of fixed plate 27, and three mounting holes correspond to the X, Y, Z directions of three-dimensional space, in each A vibration sensor 28 is fixedly connected in each mounting hole, and the vibration signals of the gear box in three directions can be measured by the three vibration sensors 28. The fixed plate 27 is also provided with two stepped through holes 29, each step The through holes 29 all connect the fixing plate 27 to the output end cover 24 by screws.

In the actual operation, according to the actual needs of the research, the gears with different faults are replaced, and the vibration signals are measured through the actual operation of the faulty gears for signal analysis and processing. The vibration signal of the gear transmission system under different load conditions is simulated by adjusting the braking torque of the magnetic powder brake. The start, stop and running speed of the motor are automatically controlled through the PLC internal control program, or the speed of the motor is manually adjusted to simulate the operating conditions of the gearbox in actual work.

Claims (5)

1. A kind of 1. Gear Fault Diagnosis testing stand, it is characterised in that：Including base（1）, in base（1）On be fixedly connected mutually it is right The motor answered（2）, gear-box（3）And brake（4）, motor（2）Tooth connection roller box（3）, in gear-box（3）Output end connection Gear train（5）, gear train（5）Connecting brake（4）, in gear-box（3）On be fixedly connected with vibrating sensor device（7）；

   In base（1）On be also connected with static controller（6）, controller（6）Control connection motor（2）；

   The gear-box（3）Using epicyclic gearbox, it includes casing（3a）, in casing（3a）Interior be provided with connects the motor （2）Planet carrier（8）, planet carrier（8）One group of planetary gear of upper connection（9）, in planetary gear（9）Outside socket gear ring （10）；

   In casing（3a）Inside it is additionally provided with main output shaft（11）With one group of transition axis（14）, in main output shaft（11）Upper socket first passes Nutating gear（12）With the second travelling gear（13）, the first transmission travelling gear（12）With planetary gear（9）Engagement, each Transition axis（14）On be socketed a First Transition gear（15）With second transition gear（16）, each First Transition gear （15）With the second travelling gear（13）Engagement；

   In casing（3a）Inside it is additionally provided with one group from output shaft（17）, each from output shaft（17）On be socketed one the 3rd transmission Gear（18）, each 3rd travelling gear（18）With corresponding second transition gear（16）Engagement；

   The gear train（5）Including intermeshing drive gear（25）And parallel gears（26）, drive gear（25）With it is parallel Gear（26）It is arranged at the casing（3a）Outside.
2. A kind of 2. Gear Fault Diagnosis testing stand according to claim 1, it is characterised in that：In the casing（3a）Relatively Both sides be equipped with opening（3b）, one is open wherein（3b）Place, which is connected, inputs end cap（23）, another opening（3b） Be connected output end cap（24）, the planet carrier（8）It is supported and fixed on input end cap（23）On, the main output shaft（11）、 The transition axis（14）With described from output shaft（17）It is supported and fixed on output end cap（24）On.
3. A kind of 3. Gear Fault Diagnosis testing stand according to claim 1, it is characterised in that：The planet carrier（8）Including Two clamping plates be arrangeding in parallel（19）, in two clamping plates（19）Between be provided with one group of connecting rod（20）, one of clamping plate（19）Even Switch through axle（21）, another clamping plate（19）It is provided with through hole（22）.
4. A kind of 4. Gear Fault Diagnosis testing stand according to claim 1, it is characterised in that：The vibrating sensor device （7）Fixed plate including T-shaped（27）, in fixed plate（27）Three adjacent faces on be equipped with a mounting hole, in each peace Dress is fixedly connected with a vibrating sensor in hole（28）.
5. A kind of 5. Gear Fault Diagnosis testing stand according to claim 1, it is characterised in that：The brake（4）Using Magnetic powder brake, the controller（6）Using frequency converter and PLC to the motor（2）Rotating speed be controlled.