CN-224216166-U - Sensor fixing device for subway vibration data acquisition

CN224216166UCN 224216166 UCN224216166 UCN 224216166UCN-224216166-U

Abstract

The utility model relates to the technical field of sensor fixing equipment, in particular to a sensor fixing device for subway vibration data acquisition, wherein two first empty slots, a limiting block and a second empty slot are symmetrically arranged at two ends of a vibration data acquisition sensor main body, the second empty slot is positioned at the upper end of the first empty slot and is communicated with the first empty slot, the limiting block is inserted into the first empty slot and is in sliding connection with the first empty slot, a sliding block penetrating through the second empty slot is vertically arranged at the rear end of the limiting block, the sliding block is in sliding connection with the second empty slot, a stirring block is arranged at the top end of the sliding block and is in an integrated structure with the sliding block, a double fixing mode of spring force and magnetic attraction is adopted, the continuous forward thrust is provided by a spring, the stable embedding of the limiting block into a clamping slot is ensured, the magnetic attraction effect of the magnetic attraction block and a mounting slot further enhances the connection tightness, the loosening problem caused by long-term high-frequency vibration of traditional bolt fixing is effectively avoided, and the accuracy of vibration data acquisition is ensured.

Inventors

ZHAO FENG
ZHU JINGJING
LI HONGJUN
WU BINGZHEN
LIU SHENGLI
CHEN XUAN
LIU DONG
LI JUN
LEI WEIDONG
NONG XINGZHONG
LUO JUNCHENG
CAI ZHAOWU
WU BIN
YE YUEHONG
LIN JIAN
ZHOU LU

Assignees

广州地铁设计研究院股份有限公司
哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院)

Dates

Publication Date: 20260508
Application Date: 20250718

Claims (6)

1. The fixing device for the vibration data acquisition sensor is characterized by comprising a guide rail main body (1) and a vibration data acquisition sensor main body (5), wherein two limit seats (2) are symmetrically arranged on one side of the guide rail main body (1), an installation groove (3) is formed between the two limit seats (2), a clamping groove (4) is formed in the inner wall of the installation groove (3), and the vibration data acquisition sensor main body (5) is inserted into the installation groove (3) and is tightly attached to the inner wall of the installation groove (3) and the outer wall of the guide rail main body (1); Two ends of the vibration data acquisition sensor main body (5) are symmetrically provided with two first empty slots (6), a limiting block (8) and a second empty slot (7), the second empty slot (7) is located at the upper end of the first empty slot (6) and is communicated with the first empty slot (6), the limiting block (8) is inserted into the first empty slot (6) and is in sliding connection with the first empty slot (6), the rear end of the limiting block (8) is vertically provided with a sliding block (10) penetrating through the second empty slot (7), the sliding block (10) is in sliding connection with the second empty slot (7), the top end of the sliding block (10) is provided with a stirring block (11), the stirring block (11) and the sliding block (10) are of an integrated structure, the outer end of the limiting block (8) is embedded with a magnetic block (9), the outer end of the limiting block (8) is inserted into the clamping slot (4), the magnetic block (9) is in magnetic attraction fit with the mounting slot (3), the rear end of the second empty slot (7) is provided with a cavity (12), the sliding block (12) is vertically arranged in the rear end of the limiting block (8), the sliding block (7) penetrates through the second empty slot (7), the sliding block (7) and is provided with a spring (13), and the sliding block (12) is inserted into the front end of the sliding block (1) and is welded to the front end of the sliding block (2.
2. The fixing device according to claim 1, wherein two of the limit seats (2) are symmetrically distributed on one side of the guide rail main body (1), and a mounting groove (3) into which the vibration data acquisition sensor main body (5) is inserted is formed therebetween.
3. A fixing device according to claim 2, characterized in that the second recess (7) is located at the upper end of the first recess (6), and that the second recess (7) communicates with the first recess (6) to form a passage for the slider (10) to pass through and slide.
4. A fixing device according to claim 3, wherein the stirring block (11) and the sliding block (10) are of an integrated structure, the stirring block (11) is arranged at the top end of the sliding block (10), and the sliding block (10) can be driven to slide in the second empty groove (7) through the stirring block (11).
5. The fixing device according to claim 4, wherein the magnetic block (9) is embedded at the outer end of the limiting block (8), and when the outer end of the limiting block (8) is inserted into the clamping groove (4), the magnetic block (9) and the mounting groove (3) form magnetic matching.
6. A fixing device according to claim 5, characterized in that one end of the strut (14) is connected to the rear end of the slider (10), and the other end is inserted into the cavity (12) and connected to the front end of the spring (13) in the cavity (12).

Description

Sensor fixing device for subway vibration data acquisition Technical Field The utility model relates to the technical field of sensor fixing equipment, in particular to a sensor fixing device for subway vibration data acquisition. Background In the operation process of a subway system, high-frequency vibration generated by wheel-rail contact is a key data source for evaluating the track state, the train operation safety and the influence of surrounding environments. In order to accurately capture such vibration signals, the sensor needs to be stably mounted at the waist or the side face of the rail so as to directly acquire the dynamic response of the wheel-rail interaction. At present, a bolt fixing mode is commonly adopted in the industry to realize connection of the sensor and the steel rail. However, when the subway train runs at high speed, continuous high-frequency impact and periodic vibration can be generated by wheel rail contact, and under the long-term action, the bolts are easy to loosen due to fatigue effect, so that relative displacement is generated between the sensor and the steel rail. The looseness not only can cause vibration signal acquisition distortion and influence data precision, but also can cause potential safety hazards of the track due to falling of the sensor, and maintenance cost and frequency are increased. Disclosure of utility model (One) solving the technical problems Aiming at the defects of the prior art, the utility model provides a sensor fixing device for subway vibration data acquisition. (II) technical scheme The fixing device for the vibration data acquisition sensor comprises a guide rail main body and a vibration data acquisition sensor main body, wherein two limit seats are symmetrically arranged on one side of the guide rail main body, a mounting groove is formed between the two limit seats, a clamping groove is formed in the inner wall of the mounting groove, and the vibration data acquisition sensor main body is inserted into the mounting groove and is tightly attached to the inner wall of the mounting groove and the outer wall of the guide rail main body; The vibration data acquisition sensor comprises a vibration data acquisition sensor body, a first hollow groove, a limiting block and a second hollow groove, wherein two first hollow grooves, the limiting block and the second hollow groove are symmetrically arranged at two ends of the vibration data acquisition sensor body, the second hollow groove is located at the upper end of the first hollow groove and is communicated with the first hollow groove, the limiting block is inserted into the first hollow groove and is in sliding connection with the first hollow groove, a sliding block penetrating through the second hollow groove is vertically arranged at the rear end of the limiting block, the sliding block is in sliding connection with the second hollow groove, a stirring block is arranged at the top end of the sliding block and is of an integrated structure, a magnetic attraction block is inlaid at the outer end of the limiting block, the outer end of the limiting block is inserted into a clamping groove and is in magnetic attraction fit with a mounting groove, a cavity is formed in the rear end of the second hollow groove, a spring is arranged in the cavity, a supporting rod inserted into the cavity and is connected with the front end of the spring, and a limiting seat is welded on the outer wall of the guide rail body. In order to enable the installation of the vibration data acquisition sensor main body to be firmer, the improvement of the utility model is that the two limit seats are symmetrically distributed on one side of the guide rail main body, an installation groove for the vibration data acquisition sensor main body to be inserted is formed between the two limit seats, the magnetic attraction blocks are inlaid at the outer ends of the limit blocks, and when the outer ends of the limit blocks are inserted into the clamping grooves, the magnetic attraction blocks are in magnetic attraction fit with the installation groove. In addition, the utility model is improved in that the second empty groove is positioned at the upper end of the first empty groove, and the second empty groove is communicated with the first empty groove to form a channel for the sliding block to penetrate and slide. Furthermore, the utility model is improved in that the poking block and the sliding block are of an integrated structure, and the poking block is arranged at the top end of the sliding block, and the poking block can drive the sliding block to slide in the second empty groove. Further, the utility model is improved in that one end of the supporting rod is connected with the rear end of the sliding block, and the other end of the supporting rod is inserted into the cavity and connected with the front end of the spring in the cavity. (III) beneficial effects Compared with the prior art, the utility model provides a se