阅读说明：本技术 一种用于连接铁路车辆转向架和射频天线的减震装置 (Damping device for connecting railway vehicle bogie and radio frequency antenna ) 是由 李常辉 张春华 于 2020-07-15 设计创作，主要内容包括：本发明公开了一种用于连接铁路车辆转向架和射频天线的减震装置,包括一对平行设置的减震器；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。本发明在3个轴向上降低作用在射频天线上的振动和冲击应力。降低车辆转向架作用在射频天线上的振动能量。(The invention discloses a damping device for connecting a railway vehicle bogie and a radio frequency antenna, which comprises a pair of dampers arranged in parallel; 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 invention reduces the vibration and impact stress acting on the radio frequency antenna in 3 axial directions. The vibration energy of the vehicle bogie acting on the radio frequency antenna is reduced.)

1. A damping device for connecting a railway vehicle bogie to a radio frequency antenna, comprising a pair of dampers arranged in parallel;

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

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.

2. The apparatus of claim 1, wherein said first adapter plate and said second adapter plate are identical in structure and are disposed in parallel in a vertical direction.

3. The apparatus of claim 2, wherein said first adapter plate is positioned directly above said second adapter plate.

4. The apparatus of claim 1, wherein 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.

5. The hitch apparatus for connecting a railway car truck to a radio frequency antenna as claimed in claim 4, wherein the number of the upper through-holes is one, and both sides of the upper through-holes clamp the entire spiral section of the spiral wire rope;

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.

6. The hitch apparatus for connecting a railway car truck to a radio frequency antenna as claimed in claim 4, wherein the number of the upper through holes is two, and each of both sides of the upper through hole clamps a half spiral section of the spiral wire rope;

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.

7. The hitch apparatus of claim 4, wherein said upper and lower clamp plates are mounted with said bolts in an offset position.

8. The apparatus of claim 4, wherein said upper and lower clamp plates are made of an aluminum alloy;

the first adapter plate and the second adapter plate are made of stainless steel.

Technical Field

The invention relates to a damping device, in particular to a damping device for a railway vehicle bogie and a radio frequency antenna.

Background

At present, radio frequency equipment is adopted in many subway lines to realize train positioning, a radio frequency antenna (TIA) is directly installed on a bogie of a vehicle through a bolt, and the connection between the antenna and the bogie is close to rigid connection. During the operation of the vehicle, the magnitude of vibration and impact of the bogie is large, so that the radio frequency antenna (TIA) mounted on the bogie also bears large vibration and impact energy. According to the standard, the equipment on the bogie needs to be tested at a maximum shock acceleration of 30g/30mS (3 axial directions) and a maximum vibration acceleration of about 4.2g (vertical direction). The service life of the electronic components and the connecting components can be shortened under the strong stress, the failure rate of the radio frequency antenna, the connector and the cable is high through field failure data collection, particularly, the vehicle with a worse vibration environment is shown that the vehicle fails again in a short time after the failed component is replaced, and the frequent failures bring great workload to field maintenance.

Disclosure of Invention

The invention aims to provide a damping device for connecting a railway vehicle bogie and a radio frequency antenna, which reduces vibration and impact stress acting on the radio frequency antenna in 3 axial directions. The vibration energy of the vehicle bogie acting on the radio frequency antenna is reduced.

The technical scheme for realizing the purpose is as follows:

a shock absorbing device for connecting a railway car truck to a radio frequency antenna includes a pair of shock absorbers arranged in parallel;

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

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.

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

Preferably, the first adapter plate is located directly above the second adapter plate.

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 upper clamping plate and the lower clamping plate are made of aluminum alloy;

the first adapter plate and the second adapter plate are made of stainless steel.

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. Because the installation position of the radio frequency antenna is kept unchanged and the height from the radio frequency antenna to the rail surface is kept unchanged, the influence on field application and maintenance is reduced. 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 view of a shock absorbing device of the present invention;

FIG. 2 is a structural view of the shock absorber of the present invention;

FIG. 3 is a graph of a vertical random vibration experiment according to the present invention;

FIG. 4 is a transverse stochastic vibration experimental plot in accordance with the present invention;

FIG. 5 is a graph of a vertical 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 and 2, the shock absorbing device for connecting a bogie of a railway vehicle and a radio frequency antenna according to the present invention comprises a pair of shock absorbers disposed in parallel;

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.

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. 3, 4 and 5.

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.