CN206595037U - Locomotive high directivity limit ring electric whistle - Google Patents
Locomotive high directivity limit ring electric whistle Download PDFInfo
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- CN206595037U CN206595037U CN201720180625.XU CN201720180625U CN206595037U CN 206595037 U CN206595037 U CN 206595037U CN 201720180625 U CN201720180625 U CN 201720180625U CN 206595037 U CN206595037 U CN 206595037U
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- horn
- sound
- limit ring
- electric whistle
- ring electric
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Abstract
A kind of locomotive high directivity limit ring electric whistle, in horn bottom laterally side by side provided with four sound heads, an air collector is fixed with front side of each sound head, a reflecting drum is arranged with outside air collector, the front end face of the horn is Long Circle, horizontal maximum size is 390~550mm on the inside of the front end face of horn, and horn throat to leading section distance is 290~390mm, and horn throat lateral dimension is 150~250mm.The utility model limits electric whistle by choice of parameters, and the directional properties in the case where specifying voice signal are obvious.Using multitone head, power output loss is reduced, electro-acoustic conversion efficiency can also be greatly improved；Two groups of sound heads are mutually redundant, and realize the Synchronous lifting of directive property and conversion efficiency.
Description
Technical field
The utility model is related to railway locomotive device, specifically a kind of locomotive high directivity limit ring electric whistle.
Background technology
Railway locomotive must all blow a whistle when running into a variety of prescribed conditions according to regulation, play the work of warning or transmission signal
With.Up to 107dB~130dB the noise pollution produced by bagpipe is used in order to avoid railway locomotive, it is to avoid to station and iron
The resident of curb line and the live and work of factory produce bigger influence, and the Ministry of Railways in 2010 has put into effect locomotive limit ring standard.
A collection of standard compliant locomotive limit ring electric whistle product is occurred in that so that our company is leading, but the limit of single-tone head of the prior art is rung
Electric whistle directional properties can still be greatly improved, and can also further reduce periphery noise pollution.On the other hand, current locomotive electric whistle
Efficiency and Redundancy Design can also be improved.
The content of the invention
Technical problem to be solved in the utility model is to provide a kind of locomotive high directivity limit ring of locomotive limit ring system
Electric whistle, further improves electric whistle directional characteristics and electric whistle operating efficiency.
The locomotive high directivity limit ring electric whistle, including sound head, reflecting drum and horn, it is characterized in that：In horn bottom transverse
An air collector is fixed with to being provided with side by side on front side of four sound heads, each sound head, a reflection is arranged with outside air collector
Cylinder, the front end face of the horn is that horizontal maximum size is 390~550mm, horn throat on the inside of Long Circle, the front end face of horn
It is 290~390mm to leading section distance, horn throat lateral dimension is 150~250mm.
A kind of embodiment is that four sound heads are divided into two groups, and every group of two sound heads are connected in series, and two groups of sound heads are connected respectively to
The output end of one independent power amplifier.
Another embodiment is, the coil set in four sound heads is sequentially connected in series constituted sound head group and power amplification
The output end connection of device.
Preferably, closed partial cylinder, partial cylinder and reflecting drum are fixed with leading inside and the reflecting drum of reflecting drum
Axis is overlapped, and the partial cylinder gap is in air collector, the rearward end sealing of partial cylinder.
Preferably, the bottom of the horn leading section is fixed with preceding mounting seat, and the bottom of sound head is installed after being fixed with
Seat, during the axis horizontal of sound head, preceding mounting seat is concordant with the bottom surface of rear mounting seat.
Preferably, horizontal maximum size is 400~450mm on the inside of the front end face of horn.
The utility model warns sound-producing device using easily controllable electric whistle as locomotive, and electric whistle is limited by choice of parameters
It is fixed, the high directivity of transfer voice is ensure that with this, the locomotive limit ring that can meet and exceed railway ministerial standard is required.And referring to
The directional properties determined under voice signal are obvious.Connected using multitone head, on the one hand improve load impedance and build-out resistor, because
And power output loss is reduced, on the other hand, multitone head promotes the air in the horn of defined volume, can significantly carried jointly
High electro-acoustic conversion efficiency；Four sound heads are divided into two groups, and common sounding can reduce the power rating requirements to each sound head, prolong
Long life；And two groups of sound heads are mutually redundant, and fault rate is greatly reduced；Can also in the case where not reducing face size,
Reduce the subtended angle of horn, while the horn throat opening area of air-flow can be promoted by expanding, realize directive property and conversion efficiency
Synchronous lifting.
Brief description of the drawings
Fig. 1 is the utility model structural representation front view,
Fig. 2 is Fig. 1 left view.
In figure：1-sound head, 2-air collector, 3-reflecting drum, 4-partial cylinder, 5-horn, 6-preceding mounting seat, 7-after
Mounting seat.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings：As shown in Figure 1, 2, the locomotive high directivity limit ring electric whistle,
Including sound first 1, reflecting drum 3 and horn 5.In horn bottom laterally side by side provided with four sounds first 1, the front side of each sound first 1 is fixed
Provided with an air collector 2, a reflecting drum 3 is arranged with outside air collector 2, it is closed in leading inside and the reflecting drum of reflecting drum 3
Partial cylinder 4 is fixed with, partial cylinder is overlapped with the axis of reflecting drum, the partial cylinder gap is located in air collector, partial cylinder
Rearward end is sealed.By such reflecting drum, the vibration of sound head promotes the air in air collector repeatedly roundabout, finally from reflecting drum
Air drag increase in gap outflow between horn, finite volume, air-flow vibrates sound head to be released from bigger area,
It is extended sound intensity, sound conversion efficiency is significantly improved.
The front end face of the horn be on the inside of rectangle or Long Circle, the front end face of horn horizontal maximum size be 390~
550mm, preferably 400~450mm, horn throat to leading section distance are 290~390mm, and horn throat lateral dimension is 150
~250mm.The directive property and small volume that can have been taken into account through overtesting, the size, small volume can make windage smaller.
The embodiment one of four sound head connections is that four sound heads are divided into two groups, and every group of two sound heads are connected in series, two groups of sounds
Head is connected respectively to the output end of an independent power amplifier.
Another embodiment is, the coil set in four sound heads is sequentially connected in series constituted sound head group and power amplification
The output end connection of device.
Four common sounding of sound head can reduce the power rating requirements to each sound head, and small loss can reduce hair
Heat and vibration loss, increase the service life.When being divided into two groups and being driven respectively by two groups of power amplifiers, two groups of sound heads are superfluous each other
It is remaining, one group of failure, another group still can be used, and fault rate is greatly reduced.
Multitone head is connected, and on the one hand improves load impedance and build-out resistor, thus reduces power output loss, another
Aspect, multitone head promotes the air in the horn of defined volume jointly, can significantly improve electro-acoustic conversion efficiency.
Throat's four sound heads arranged side by side of horn, after the reflecting drum of roundabout setting, throat opening area increase,
In the case of not reducing face size, it can reduce the subtended angle of horn, realize the Synchronous lifting of directive property and conversion efficiency.
As shown in Fig. 2 the bottom of the leading section of horn 5 is fixed with preceding mounting seat 6, the bottom of sound first 1 is fixed with
Mounting seat 7 afterwards, during the axis horizontal of sound head, preceding mounting seat is concordant with the bottom surface of rear mounting seat.During as finished product, quickly can may be used
By installing.
Claims (6)
1. a kind of locomotive high directivity limit ring electric whistle, including sound head (1), reflecting drum (3) and horn (5), it is characterized in that：In horn
Bottom is laterally provided with front side of four sound heads (1), each sound head (1) and is fixed with an air collector (2) side by side, in air collector
(2) reflecting drum (3) is arranged with outside；The front end face of the horn is horizontal maximum chi on the inside of Long Circle, the front end face of horn
Very little is 390~550mm, and horn throat to leading section distance is 290~390mm, and horn throat lateral dimension is 150~250mm.
2. limit ring electric whistle according to claim 1, it is characterized in that：Four sound heads (1) are divided into two groups, every group of two sound head strings
Connection connection, two groups of sound heads are connected respectively to the output end of an independent power amplifier.
3. limit ring electric whistle according to claim 1, it is characterized in that：The coil set in four sound heads (1) is sequentially connected in series
The sound head group and the output end of power amplifier constituted is connected.
4. limit ring electric whistle according to claim 1, it is characterized in that：It is closed in the leading inside and reflecting drum of reflecting drum (3)
Partial cylinder (4) is fixed with, partial cylinder is overlapped with the axis of reflecting drum, the partial cylinder gap is in air collector, partial cylinder
Rearward end sealing.
5. limit ring electric whistle according to claim 1, it is characterized in that：Before the bottom of horn (5) leading section is fixed with
Mounting seat (6), the bottom of sound head (1) is fixed with rear mounting seat (7), during the axis horizontal of sound head, preceding mounting seat and rear installation
The bottom surface of seat is concordant.
6. limit ring electric whistle according to claim 1, it is characterized in that：Horizontal maximum size is 400 on the inside of the front end face of horn
~450mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720180625.XU CN206595037U (en) | 2017-02-27 | 2017-02-27 | Locomotive high directivity limit ring electric whistle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720180625.XU CN206595037U (en) | 2017-02-27 | 2017-02-27 | Locomotive high directivity limit ring electric whistle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206595037U true CN206595037U (en) | 2017-10-27 |
Family
ID=60125993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720180625.XU Active CN206595037U (en) | 2017-02-27 | 2017-02-27 | Locomotive high directivity limit ring electric whistle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206595037U (en) |
-
2017
- 2017-02-27 CN CN201720180625.XU patent/CN206595037U/en active Active
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