阅读说明：本技术 一种射频天线减震防脱落装置 (Radio frequency antenna shock attenuation dropout prevention means ) 是由 李常辉 张春华 于 2020-07-15 设计创作，主要内容包括：本发明公开了一种射频天线减震防脱落装置,包括：一对平行设置的减震器,以及四根保护钢丝绳；每个所述减震器包括：顶部连接转向架的第一转接板；底部连接射频天线的第二转接板；横向设置,并连接所述第一转接板底部和所述第二转接板顶部的一对螺旋钢丝绳。四根所述保护钢丝绳分别连接所述转向架的四角和对应的所述射频天线的四角。本发明能够有效降低车辆转向架作用在射频天线上的振动能量,同时防止射频天线脱落。(The invention discloses a radio frequency antenna shock absorption anti-drop device, which comprises: a pair of shock absorbers arranged in parallel and four protective steel wire ropes; each of the shock absorbers includes: the top of the first adapter plate is connected with the bogie; the bottom of the second adapter plate is connected with the radio frequency antenna; and the pair of spiral steel wire ropes are transversely arranged and connected with the bottom of the first adapter plate and the top of the second adapter plate. The four protection steel wire ropes are respectively connected with four corners of the bogie and four corners of the corresponding radio frequency antenna. The invention can effectively reduce the vibration energy of the vehicle bogie acting on the radio frequency antenna and simultaneously prevent the radio frequency antenna from falling off.)

1. The utility model provides a radio frequency antenna shock attenuation dropout prevention means which characterized in that includes: a pair of shock absorbers arranged in parallel and four protective steel wire ropes;

each of the shock absorbers includes:

the top of the first adapter plate is connected with the bogie;

the bottom of the second adapter plate is connected with the radio frequency antenna; and

a pair of spiral steel wire ropes which are transversely arranged and connect the bottom of the first adapter plate and the top of the second adapter plate;

the four protection steel wire ropes are respectively connected with four corners of the bogie and four corners of the corresponding radio frequency antenna.

2. The radio frequency antenna shock absorption dropout prevention means of claim 1, wherein said shock absorber further comprises: the upper clamping plate and the lower clamping plate are connected with the upper end and the lower end of each spiral steel wire rope;

the two ends of the upper clamping plate are fixedly connected with the first adapter plate through bolts, and an upper through hole for the spiral steel wire rope to pass through is formed in the middle of the upper clamping plate;

the two ends of the lower clamping plate are fixedly connected with the second adapter plate through bolts, and a lower through hole through which the spiral steel wire rope passes is formed in the middle of the lower clamping plate.

3. The radio frequency antenna shock-absorbing and anti-falling device according to claim 2, wherein the number of the upper through holes is one, and all the spiral sections of the spiral steel wire rope are clamped by two sides of the upper through holes;

the number of the lower through holes is two, and half spiral sections of the spiral steel wire rope are clamped on two sides of each lower through hole.

4. The radio frequency antenna damping and anti-falling device according to claim 2, wherein the number of the upper through holes is two, and half of the spiral section of the spiral steel wire rope is clamped by two sides of each upper through hole;

the number of the lower through holes is two, and half spiral sections of the spiral steel wire rope are clamped on two sides of each lower through hole.

5. The radio frequency antenna shock-absorbing and anti-falling device according to claim 2, wherein the bolts of the upper clamp plate and the lower clamp plate are installed in a staggered manner.

6. The radio frequency antenna shock-absorbing and anti-falling device according to claim 1, wherein the first adapter plate and the second adapter plate are identical in structure and are arranged in parallel up and down;

the first adapter plate is positioned right above the second adapter plate.

7. The radio frequency antenna damping and anti-falling device according to claim 1, wherein each of the protection wire ropes comprises an arc-shaped wire rope, terminals are fixedly connected to both ends of the arc-shaped wire rope, and each terminal is provided with a bolt hole;

one of the terminals is mounted at one corner of the bogie through a bolt, and the other terminal is mounted at one corner corresponding to the radio-frequency antenna through a bolt.

Technical Field

The invention relates to a damping and anti-falling device for a radio frequency antenna of a railway vehicle.

Background

The train positioning of a part of subway lines is realized by reading a beacon on the ground through a radio frequency antenna, the radio frequency antenna for positioning is arranged on a bogie of a vehicle, and in the running process of the vehicle, the vibration magnitude on the bogie of the train is very large, so a vibration absorber needs to be arranged between the radio frequency antenna and the bogie, and the existing vibration absorber cannot effectively absorb the vibration energy transmitted to the radio frequency antenna by the bogie. In addition, if the radio frequency antenna falls off the track due to the fault of the shock absorber, a safety accident can be caused, the driving safety is affected, and therefore the anti-falling device is needed.

Disclosure of Invention

The invention aims to provide a radio frequency antenna damping and anti-falling device which can effectively reduce vibration energy of a vehicle bogie acting on a radio frequency antenna and prevent the radio frequency antenna from falling off.

The technical scheme for realizing the purpose is as follows:

a radio frequency antenna shock attenuation dropout prevention means includes: a pair of shock absorbers arranged in parallel and four protective steel wire ropes;

each of the shock absorbers includes:

the top of the first adapter plate is connected with the bogie;

the bottom of the second adapter plate is connected with the radio frequency antenna; and

a pair of spiral steel wire ropes which are transversely arranged and connect the bottom of the first adapter plate and the top of the second adapter plate;

the four protection steel wire ropes are respectively connected with four corners of the bogie and four corners of the corresponding radio frequency antenna.

Preferably, the shock absorber further comprises: the upper clamping plate and the lower clamping plate are connected with the upper end and the lower end of each spiral steel wire rope;

the two ends of the upper clamping plate are fixedly connected with the first adapter plate through bolts, and an upper through hole for the spiral steel wire rope to pass through is formed in the middle of the upper clamping plate;

the two ends of the lower clamping plate are fixedly connected with the second adapter plate through bolts, and a lower through hole through which the spiral steel wire rope passes is formed in the middle of the lower clamping plate.

Preferably, the number of the upper through holes is one, and all spiral sections of the spiral steel wire rope are clamped by two sides of the upper through holes;

the number of the lower through holes is two, and half spiral sections of the spiral steel wire rope are clamped on two sides of each lower through hole.

Preferably, the number of the upper through holes is two, and half spiral sections of the spiral steel wire rope are clamped by two sides of each upper through hole;

the number of the lower through holes is two, and half spiral sections of the spiral steel wire rope are clamped on two sides of each lower through hole.

Preferably, the bolts of the upper clamping plate and the lower clamping plate are installed in a staggered mode.

Preferably, the first adapter plate and the second adapter plate are consistent in structure and are arranged in parallel up and down;

the first adapter plate is positioned right above the second adapter plate.

Preferably, each protection steel wire rope comprises an arc-shaped steel wire rope, terminals are fixedly connected to two ends of the arc-shaped steel wire rope, and each terminal is provided with a bolt hole;

one of the terminals is mounted at one corner of the bogie through a bolt, and the other terminal is mounted at one corner corresponding to the radio-frequency antenna through a bolt.

The invention has the beneficial effects that: on the premise of not changing the application environment and the product performance, the invention reduces the vibration and impact stress acting on the radio frequency antenna in 3 axial directions, and reduces the vibration magnitude acting on the radio frequency antenna, thereby reducing the failure rate of the equipment. Meanwhile, the original installation size and installation conditions of the radio frequency antenna cannot be changed; the radio frequency antenna fixing device provides protection for reliable fixing and falling prevention of the radio frequency antenna, and avoids the occurrence of events which affect safety and are caused by installation problems or absorber failure problems. And the steel wire rope is protected to be in an unstressed state at ordinary times, so that fatigue stress cannot be generated. The weight of the protecting steel wire rope is light, and the increase of the load of the bogie is avoided; the steel wire rope is protected to be maintenance-free, and only the flying wire condition needs to be checked regularly. The overload capacity of the protective steel wire rope is more than 20 times of the self weight of the radio frequency antenna (the self weight of the radio frequency antenna is 7.64Kg), so that the radio frequency antenna can be effectively fixed after the shock absorber fails; after the invention is in effect, the distance between the radio frequency antenna and the rail surface is more than 10cm, so that the collision between the radio frequency antenna and the rail equipment can be prevented. The steel wire rope shock absorber has certain rigidity, and even in strong vibration and impact environment, the shock absorber is very small in deformation and cannot influence the functions of the antenna. All the steel wire rope shock absorbers are metal parts, only regular inspection is needed in the service life cycle, and maintenance operation is not needed.

Drawings

FIG. 1 is a structural diagram of the radio frequency antenna damping and anti-falling device of the present invention;

FIG. 2 is a view showing a connection structure of a damper according to the present invention;

FIG. 3 is a structural view of the shock absorber of the present invention;

FIG. 4 is a graph of a vertical random vibration experiment according to the present invention;

FIG. 5 is a transverse stochastic vibration experimental plot in accordance with the present invention;

FIG. 6 is a graph of a longitudinal random vibration experiment in accordance with the present invention.

Detailed Description

The invention will be further explained with reference to the drawings.

Referring to fig. 1-3, the anti-falling device for damping radio frequency antenna of the present invention comprises: a pair of parallel arranged shock absorbers and four protective steel wire ropes 7.

Each shock absorber includes: the device comprises a first adapter plate 1, a second adapter plate 2 and a pair of spiral steel wire ropes 3.

The top of the first adapter plate 1 is connected with a bogie. The bottom of the second adapter plate 2 is connected with a radio frequency antenna 4.

The spiral steel wire rope 3 is transversely arranged and connected with the bottom of the first adapter plate 1 and the top of the second adapter plate 2.

The first adapter plate 1 and the second adapter plate 2 are consistent in structure and are arranged in parallel up and down. The first adapter plate 1 is located directly above the second adapter plate 2.

The bumper shock absorber still includes: an upper clamping plate 5 and a lower clamping plate 6 which are connected with the upper end and the lower end of each spiral steel wire rope 3.

The two ends of the upper clamping plate 5 are fixedly connected with the first adapter plate 1 through bolts, and an upper through hole for the spiral steel wire rope 3 to pass through is formed in the middle of the upper clamping plate. The two ends of the lower clamping plate 6 are fixedly connected with the second adapter plate 2 through bolts, and a lower through hole for the spiral steel wire rope 3 to pass through is formed in the middle of the lower clamping plate.

One of the situations is: the number of the upper through holes is one, and all spiral sections of the spiral steel wire rope 3 are clamped on two sides of the upper through holes. The number of the lower through holes is two, and half spiral sections of the spiral steel wire rope 3 are clamped on two sides of each lower through hole.

In another case: the number of the upper through holes is two, and half spiral sections of the spiral steel wire rope 3 are clamped on two sides of each upper through hole. The number of the lower through holes is two, and half spiral sections of the spiral steel wire rope 3 are clamped on two sides of each lower through hole.

Four protective steel wire ropes 7 are respectively connected with four corners of the bogie and four corners of the corresponding radio frequency antenna 4. Each protection steel wire rope 7 comprises an arc-shaped steel wire rope, terminals are fixedly connected to two ends of the arc-shaped steel wire rope, and each terminal is provided with a bolt hole; one of the terminals is mounted at one corner of the bogie through a bolt, and the other terminal is mounted at a corresponding corner of the radio frequency antenna 4 through a bolt.

2 shock absorbers between the radio frequency antenna 4 and the bogie are completely disconnected, the radio frequency antenna 4 is hoisted on 4 protective steel wire ropes 7, and the distance between the lowest point of the antenna and the rail surface is more than 10 cm. The overload bearing capacity of the protective steel wire rope 7 is more than 20 times of the self weight of the radio frequency antenna.

The bolts of the upper clamping plate 5 and the lower clamping plate 6 are installed in a staggered mode, and the compression range is enlarged when large-energy impact is absorbed.

In this embodiment, the upper and lower clamping plates 5 and 6 are made of aluminum alloy; the first adapter plate 1 and the second adapter plate 2 are made of stainless steel.

The invention is used for reducing the vibration energy born by equipment arranged on the vehicle bogie and is arranged between the radio frequency antenna 4 and the vehicle bogie, thereby blocking the strong vibration energy of the vehicle bogie from being transferred to the radio frequency antenna 4.

Through the test of the vibration table, the vibration damper can play a good vibration damping effect on frequencies above 100Hz in 3 axial directions. The results are shown in FIGS. 4, 5 and 6.

The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.