CN207241483U - A kind of dropper - Google Patents
A kind of dropper Download PDFInfo
- Publication number
- CN207241483U CN207241483U CN201721193116.7U CN201721193116U CN207241483U CN 207241483 U CN207241483 U CN 207241483U CN 201721193116 U CN201721193116 U CN 201721193116U CN 207241483 U CN207241483 U CN 207241483U
- Authority
- CN
- China
- Prior art keywords
- clamper tube
- pressure pipe
- dropper
- hanger ear
- pipe piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The utility model provides a kind of dropper, belongs to electric railway traction power supply unit technical field.Including pressure pipe piston, clamper tube and hanger ear, clamper tube is equipped with axial blind hole for central upper portion, and lower part is equipped with U-shaped jag, and two yoke lower parts are equipped with through hole；One end of dropper line at the top of pressure pipe piston with passing through stamping connection, the outside diameter of pressure pipe piston lower portion coordinates with the axial blind hole inner wall on clamper tube top, hanger ear is equipped with the U-shaped jag of clamper tube lower part, the through hole and hanger ear of bolt through two yoke lower parts are fixed by nut, the clamping opening of hanger ear and the engagement of contact line are fixed, and pressure pipe piston is fixed by the piston cap above clamper tube.It is mainly used for the hanging of electric railway traction contact net for power supplying cable.
Description
Technical field
The utility model belongs to electric railway traction power supply unit technical field.
Background technology
Existing Contact Net's Suspension Chord has dropper, link dropper and rigid dropper.But it is used in the contact of high-speed railway
This online some dropper all have stranded, to fracture with impact failure situation, this seriously affects the row of bullet train
Car safety.As train running speed further improves, this, which also becomes, influences safe for operation most prominent of bullet train
Problem.It has been investigated that the final cause for causing such problem is pantograph and the temporary impact load of contact net.But use
The dropper of resistance to shock loads is also not used in dropper structure.
Utility model content
The purpose of this utility model is to provide a kind of dropper, and shock loading is made between it can efficiently solve bow net
Into shock loading, the problem of strands stress concentration and energy dissipation.
The mesh of the utility model is achieved through the following technical solutions：A kind of dropper, including pressure pipe piston, pincers
Pressure pipe and hanger ear, clamper tube are equipped with axial blind hole for central upper portion, and lower part is equipped with U-shaped jag, and two yoke lower parts are all provided with
There is through hole；One end of dropper line and the top of pressure pipe piston are by stamping connection, on the outside diameter and clamper tube of pressure pipe piston lower portion
The axial blind hole inner wall in portion coordinates, and is equipped with hanger ear in the U-shaped jag of clamper tube lower part, and bolt passes through two yoke lower parts
Through hole and hanger ear are fixed by nut, and the clamping opening of hanger ear and the engagement of contact line are fixed, and pressure pipe piston passes through
Piston cap above clamper tube is fixed.
The pressure pipe piston lower portion outer surface is the structure with sealing ring..
The clamper tube inner wall is air cylinder structure.
It is with interior hexagonal groove on the outside of the through hole of described two yoke lower parts of clamper tube.
Clamper tube and hanger ear the contact surface is wear pattern surface..
Further, pressure pipe piston and dropper line manually or electrically hydraulic tongs use a positive two anti-three indentation methods pressure
It is connected together, the pressure pipe piston other end is coupled by the air pressure of inside and outside by sealing ring and clamper tube and can keep one
Fixed external and internal pressure is poor, and the suspension force that ensure that dropper is steady state value in static state.
Together with clamper tube is bolted with hanger ear, wherein on the outside of the through hole of two yoke lower parts of clamper tube
For with interior hexagonal groove, this groove can prevent the relative displacement of screw bolt and nut, and can also inwardly tense clamper tube
Two yoke lower parts, make to produce between two yoke lower inside walls of clamper tube and hanger ear certain extruding force and
Frictional force is produced when hanger ear and clamper tube relative motion, and dissipates the energy produced due to impact.
The utility model compared with prior art the advantages of and effect：It is this whole using friction and the shock resistance of air damping
Integral hanger, is a kind of structure type of dropper, make use of the friction between hanger ear and clamper tube to consume due to wire clamp
In impact the rotates energy that produces, is also reduced since pantograph is hung down using the air pressure between clamper tube and pressure pipe piston is viscid
To the vertical impact caused by impact between wire clamp, contact net and dropper.With shock resistance significant effect, energy absorption it is rapid,
It is compact-sized, small, quality is small, is easily installed the advantages that replacement is safeguarded.
Brief description of the drawings
Fig. 1 is the utility model left view
Fig. 2 is the partial sectional view (pneumatic cushioning mechanism) of the utility model
Fig. 3 is the partial sectional view (friction damping mechanism) of the utility model
Fig. 4 is the utility model overall structure graphics
Embodiment
As shown in Figure 1, a kind of dropper, including pressure pipe piston 2, clamper tube 3 and hanger ear 5；Dropper line 1 and pressure pipe
For piston 2 by extruding or stamping connection, 2 lower external face of pressure pipe piston is the structure with sealing ring, and sealing ring outside diameter is pressed with pincers
The axial blind hole inner wall on 3 top of pipe coordinates, and hanger ear 5 is equipped with the U-shaped jag of 3 lower part of clamper tube, and bolt 6 is pitched through two
The through hole and hanger ear 5 of arm lower part are fixed by nut 4, and the engagement of the clamping opening and contact line 7 of hanger ear 5 is fixed,
Pressure pipe piston 2 is fixed by the piston cap 8 of the top of clamper tube 3.Pressure pipe piston 2 limits maximum by the piston cap 8 of welding
Vertical deviation.
It is pneumatic cushioning mechanism shown in Fig. 2, pressure pipe piston 2 and 1 manually or electrically hydraulic tongs of dropper line are using one just
Two Fan, tri- indentation methods are crimped together, and are formd and are fitted close and are fixed together, pressure pipe piston 2 and clamper tube 3 pass through
The inside and outside differential pressure that sealing cavity is formed links together, and is recessed with interior hexagonal on the outside of the through hole of two yoke lower parts of clamper tube
Groove.The groove to match with nut shape is with for installation bolt.
It is friction damping mechanism shown in Fig. 3, to 3 lower end of clamper tube two when assembling clamper tube 3 and hanger ear 5
Yoke, which applies prestressing force, to be enable bolt 6 to be just stuck in interior hexagonal groove and ensures that the displacement of its opposing nut 4 remains unchanged.
The radial displacement of clamper tube 3 and hanger ear 5 can be so limited, while can make to exist between clamper tube 3 and hanger ear 5 again
Frictional force and pretightning force.
The friction that this structure can be efficiently utilized between hanger ear 5 and clamper tube 3 is consumed since wire clamp is rushing
Hit the energy that produces in rotating, also reduced using the air pressure between clamper tube 3 and pressure pipe piston 2 is viscid since pantograph is vertical
Vertical impact caused by Contact -impact net between wire clamp, contact net and dropper.It is fast with shock resistance significant effect, energy absorption
It is fast, compact-sized, small, quality is small, is easily installed the advantages that replacement is safeguarded.
Embodiment described in the utility model does not form the limitation to the application scope, every new in this practicality
Within the spirit and principle of type design, all any modification, equivalent and improvement that one of skill in the art can make etc. are equal
It should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of dropper, including pressure pipe piston (2), clamper tube (3) and hanger ear (5), it is characterised in that：Clamper tube
(3) axial blind hole is equipped with for central upper portion, lower part is equipped with U-shaped jag, and two yoke lower parts are equipped with through hole；Dropper line (1)
The top of one end and pressure pipe piston (2) by stamping connection, the outside diameter of pressure pipe piston (2) lower part with the clamper tube (3) of sealing
The axial blind hole inner wall in portion coordinates, and hanger ear (5) is equipped with the U-shaped jag of clamper tube (3) lower part, and bolt (6) passes through two
The through hole and hanger ear (5) of yoke lower part are fixed by nut (4), the clamping opening of hanger ear (5) and the groove of contact line (7)
Engagement is fixed, and pressure pipe piston (2) is fixed by the piston cap (8) above clamper tube (3).
A kind of 2. dropper according to claim 1, it is characterised in that：Pressure pipe piston (2) lower external face is
Structure with sealing ring.
A kind of 3. dropper according to claim 1, it is characterised in that：Clamper tube (3) inner wall is air cylinder structure.
4. a kind of dropper according to claim 1, it is characterised in that described (3) two yoke lower parts of clamper tube
It is with interior hexagonal groove on the outside of through hole.
5. a kind of dropper according to claim 1, it is characterised in that the clamper tube (3) and hanger ear (5) connect
It is wear pattern surface to touch surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721193116.7U CN207241483U (en) | 2017-09-18 | 2017-09-18 | A kind of dropper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721193116.7U CN207241483U (en) | 2017-09-18 | 2017-09-18 | A kind of dropper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207241483U true CN207241483U (en) | 2018-04-17 |
Family
ID=61889005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721193116.7U Active CN207241483U (en) | 2017-09-18 | 2017-09-18 | A kind of dropper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207241483U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618403A (en) * | 2017-09-18 | 2018-01-23 | 西南交通大学 | A kind of dropper |
-
2017
- 2017-09-18 CN CN201721193116.7U patent/CN207241483U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107618403A (en) * | 2017-09-18 | 2018-01-23 | 西南交通大学 | A kind of dropper |
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| GR01 | Patent grant |