CN-119104302-B - Main bearing raceway damage monitoring system and heading machine adopting same

CN119104302BCN 119104302 BCN119104302 BCN 119104302BCN-119104302-B

Abstract

The invention discloses a main bearing raceway damage monitoring system and a heading machine adopting the same, the system comprises a main pushing collecting end fixedly arranged on a main pushing retainer, a radial collecting end fixedly arranged on a radial retainer, the damage condition of the main bearing raceway is intuitively judged by monitoring the distance from the sensing surface of the collecting end to the raceway and through the change of the distance, so that the damage condition of the main pushing raceway and the radial raceway can be accurately monitored. And install the main stiff end that pushes away on first outer lane, radial stiff end of installation on the second outer lane to for pushing away the collection end for the main, radial collection end respectively provides wireless charging and wireless receiving data, because collection end is integrated inside the holder completely, does not occupy new installation space, and adopts wireless communication and wireless power supply's mode to carry out collection of collection end and charge, saved communication cable and power cable, effectively avoided the restriction of main bearing internally mounted space.

Inventors

XIAO ZHENGHANG
Tong Kaixuan
WANG YONGSHENG
LI XINQUAN
Hu mian

Assignees

中国铁建重工集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20240801

Claims (7)

1. The main bearing raceway damage monitoring system is characterized by comprising a main pushing collecting end, a main pushing fixed end, a radial collecting end, a radial fixed end and a receiving terminal, wherein the main pushing collecting end is fixedly arranged on a main pushing retainer (1) and is used for collecting the distance from the main pushing roller upper raceway (2) to the main pushing roller lower raceway (3) and the distance from the main pushing roller upper raceway to the main pushing roller lower raceway, the main pushing fixed end is fixedly arranged on a first outer ring (4) and is used for receiving collecting data of the main pushing collecting end in a wireless communication mode and providing wireless power for the main pushing collecting end, the radial collecting end is fixedly arranged on a radial retainer (5) and is used for collecting the distance from the main pushing collecting end to a radial upper raceway (6) and from the radial lower raceway (7), the radial fixed end is fixedly arranged on a second outer ring (8) and is used for receiving the collecting data of the radial collecting end in a wireless communication mode and providing wireless power for the main pushing collecting end, and the radial fixed end are connected with the receiving terminal through a cable, and the receiving terminal is used for carrying out collecting data of the main pushing end and the radial collecting end and the main pushing end and the radial collecting end and providing electric energy for monitoring; The main pushing acquisition end comprises a data processing module (102) and at least one displacement sensor module (101), wherein the at least one displacement sensor module (101) is fixedly arranged on a rib plate at the middle position of the main pushing retainer (1), a main pushing roller (9) which is arranged in a pocket beside the rib plate and is close to the main pushing fixed end is removed, the data processing module (102) is fixedly arranged at the position of the removed main pushing roller (9), a baffle is arranged in the middle of the pocket and used for limiting the main pushing roller (9) remained in the pocket, the data processing module (102) is connected with the displacement sensor module (101) through cables, the number of the displacement sensor modules (101) is four, and each two displacement sensor modules (101) are symmetrically arranged at two sides of a central axis of the main pushing roller (9); The sampling frequency of the displacement sensor module (101) is determined according to the diameter of the main bearing, the rotating speed and the minimum size requirement for target fault identification, and the calculation formula is as follows: ; wherein F s represents the sampling frequency of the displacement sensor, n represents the rotational speed of the main bearing, Representing the diameter of the main bearing, s representing the sample point spacing distance determined in accordance with the identified minimum size requirement.
2. A main bearing raceway damage monitoring system according to claim 1, wherein each displacement sensor module (101) comprises two oppositely mounted displacement sensors for simultaneously measuring the distance to the main thrust roller upper raceway (2) and to the main thrust roller lower raceway (3), respectively.
3. The main bearing raceway damage monitoring system of claim 1, wherein the data processing module (102) comprises a battery module (104), a wireless energy receiving module (105), a wireless communication transmitting module (106) and a microprocessor (107) which are installed in the oil protective shell (103), the battery module (104) is respectively electrically connected with the wireless energy receiving module (105), the wireless communication transmitting module (106), the microprocessor (107) and the displacement sensor module (101), and the microprocessor (107) is also respectively electrically connected with the displacement sensor module (101) and the wireless communication transmitting module (106).
4. The main bearing race damage monitoring system of claim 1, wherein the main push collection end and the radial collection end each include an RFID tag, the main push collection end and the radial collection end each include an RFID reader, when the collection end moves within a detection range of the RFID reader, the RFID reader reads tag signal intensity to identify position information of the RFID tag, and before the device is ready to stop, the rotational speed of the main bearing is adjusted according to the position information identified by the RFID reader so that the collection end stops within a coverage range of wireless charging when the device is completely stationary.
5. A main bearing race damage monitoring system as claimed in claim 3, wherein the main push-and-pull fixed end comprises a wireless energy transmitting module (108) and a wireless communication receiving module (109), the wireless communication receiving module (109) being in wireless communication with the wireless communication transmitting module (106), the wireless energy transmitting module (108) providing wireless charging to the wireless energy receiving module (105).
6. A main bearing raceway damage monitoring system according to claim 2, wherein the displacement sensor is mounted at a distance (a, b-c) from the raceway surface, wherein a represents a lower limit of a detection range of the displacement sensor, b represents an upper limit of the detection range of the displacement sensor, and c represents a maximum size of a raceway surface pit.
7. A heading machine characterized in that a main bearing raceway damage monitoring system according to any one of claims 1 to 6 is employed.

Description

Main bearing raceway damage monitoring system and heading machine adopting same Technical Field The invention relates to the technical field of main bearing monitoring, in particular to a main bearing raceway damage monitoring system, and in addition, particularly relates to a heading machine adopting the main bearing raceway damage monitoring system. Background The main bearing is a key part of a large-scale heading machine, once the main bearing fails in the heading process, immeasurable loss is caused, and due to the harshness of the heading working condition and the importance of the main bearing, real-time monitoring on the damage conditions of rollaway nest such as abrasion, pitting corrosion and peeling is necessary, so that the operation safety of equipment is ensured. For example, patent CN115524123a discloses a method for monitoring the running state of a main bearing of a heading machine, which monitors the running state of each sub-component of the main bearing based on vibration data and the failure frequency of the sub-component, but because the working condition of the heading machine is very bad, it is difficult to accurately obtain effective failure information from the monitoring data under the bad working condition, and it is difficult to realize accurate monitoring of the damage of the raceway. In addition, since the main bearing has a limited space for mounting inside, it is difficult to mount various types of sensors for monitoring thereof, and high sealability is required inside the main bearing, which makes it difficult for data transmission and power supply of the sensors. Disclosure of Invention The invention provides a main bearing raceway damage monitoring system and a heading machine adopting the same, which can intuitively judge the damage condition of a main bearing raceway through the change of distance, does not occupy new installation space, omits a communication cable and a power supply cable, and effectively avoids the limitation of the installation space in the main bearing. According to one aspect of the invention, there is provided a main bearing raceway damage monitoring system, comprising a main push collecting end, a main push fixing end, a radial collecting end, a radial fixing end and a receiving terminal, wherein the main push collecting end is fixedly arranged on a main push retainer and is used for collecting distances from the main push roller upper raceway and the main push roller lower raceway, the main push fixing end is fixedly arranged on a first outer ring and is used for receiving collected data of the main push collecting end in a wireless communication mode and providing wireless power supply for the main push collecting end, the radial collecting end is fixedly arranged on the radial retainer and is used for collecting distances from the radial collecting end to the radial upper raceway and from the radial lower raceway, the radial fixing end is fixedly arranged on a second outer ring and is used for receiving collected data of the radial collecting end in a wireless communication mode and providing wireless power supply for the radial collecting end, and the main push fixing end and the radial fixing end are connected with the receiving terminal through cables, and the receiving terminal is used for carrying out raceway damage monitoring according to the collected data of the main push collecting end and the radial collecting end and providing electric energy for the main push fixing end and the radial fixing end. Further, the main collection end that pushes away includes data processing module and at least one displacement sensor module, and at least one displacement sensor module fixed mounting is on the floor that pushes away holder intermediate position, gets rid of in this floor next door pocket and be close to the main roller that pushes away the stiff end setting of pushing away, data processing module then fixed mounting is in the main position that pushes away the roller that gets rid of, and the centre in pocket is provided with the baffle for carry out spacingly to the remaining main roller that pushes away in the pocket, data processing module pass through the cable with displacement sensor module connects. Further, the number of the displacement sensor modules is four, and every two displacement sensor modules are symmetrically arranged on two sides of the central axis of one main pushing roller. Further, each displacement sensor module comprises two displacement sensors which are installed oppositely and are used for simultaneously measuring the distance from the upper roller path of the main push roller to the lower roller path of the main push roller respectively. Further, the sampling frequency of the displacement sensor module is determined according to the diameter of the main bearing, the rotating speed and the minimum size requirement for target fault identification, and the calculation formula is as follows: Wherein F s represe