CN208263982U - Pantograph, lifting bow device and electric pushrod - Google Patents
Pantograph, lifting bow device and electric pushrod Download PDFInfo
- Publication number
- CN208263982U CN208263982U CN201820717744.9U CN201820717744U CN208263982U CN 208263982 U CN208263982 U CN 208263982U CN 201820717744 U CN201820717744 U CN 201820717744U CN 208263982 U CN208263982 U CN 208263982U
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- push rod
- rod shaft
- gear
- electric pushrod
- central spindle
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Abstract
The utility model discloses a kind of electric pushrods, include: push rod shaft, for driving push rod axis carry out linear expansion movement motor, for manual actuation push rod shaft carry out linear expansion movement flexible axle, push rod shaft is connected to motor, the central spindle of flexible axle connects push rod shaft by unidirectional transmission, and central spindle can drive push rod shaft progress linear expansion movement by unidirectional transmission and push rod shaft cannot drive central spindle movement by unidirectional transmission.During motor driven, since central spindle will not be moved with push rod shaft, influence of the movement of push rod shaft to flexible axle central spindle can be reduced.The invention also discloses a kind of, and device and pantograph are bent in the lifting including above-mentioned electric pushrod.
Description
Technical field
The utility model relates to pantograph technical field, in particular to a kind of electric pushrod.In addition, the utility model also relates to
And a kind of lifting bow device and pantograph including above-mentioned electric pushrod.
Background technique
With the development of society, rail vehicle obtains the increasingly wide market space.Rail vehicle drives usually using electric power
It is dynamic, be mounted on roof pantograph rise after, pantograph pan with can vehicle up direction contact net contact acquisition electric current, to drive
Vehicle movement.
The pantograph of roof can pull lower arm rod rotation using the rising bow spring contraction for being mounted on pantograph chassis, realize
Rising bow movement；The contraction for pushing lower arm rod rotation to overcome rising bow spring is extended using the electric pushrod for being mounted on pantograph chassis
Power realizes the movement of drop bow.
When pantograph needs to carry out frequently lifting bow, the push rod shaft in electric pushrod needs frequently flexible.Currently, push rod
Axis, which frequently stretches, will drive the flexible axle being fixedly connected in push rod shaft and frequently rotates, wherein flexible axle is for manual actuation push rod
Axis movement.
However, since there are internal resistances when flexible axle itself rotates, when causing flexible axle to be arranged, the turning half of length and arrangement
All there is limitation in diameter and number, length cannot be too long, and number of turns cannot be excessive, and flexible axle itself internal resistance otherwise can be made excessive, increase
Add the load of push rod shaft.Meanwhile when rotating soft axle there is friction in central spindle and axle sleeve, if frequent rotary shaft repeatedly for a long time
Core, central spindle and axle sleeve are worn, and flexible axle central spindle is caused to be broken, until the case where clamping stagnation occurs in flexible axle, and then lead to pantograph
Bow movement cannot be gone up and down, the safety of vehicle is threatened to operate normally.
Therefore, influence of the movement of push rod shaft to flexible axle central spindle how is reduced, is that those skilled in the art need to solve at present
Certainly the technical issues of.
Utility model content
In view of this, the movement of push rod shaft is to flexible axle central spindle the purpose of the utility model is to provide a kind of electric pushrod
Influence it is smaller.The another object of the utility model is to provide a kind of lifting bow device including above-mentioned electric pushrod, push rod
Influence of the movement of axis to flexible axle central spindle is smaller.It includes that device is bent in above-mentioned lifting that the another object of the utility model, which is to provide a kind of,
Pantograph, influence of the movement of push rod shaft to flexible axle central spindle be smaller.
To achieve the above object, the utility model provides the following technical solutions:
A kind of electric pushrod, comprising: push rod shaft, is used the motor for driving the push rod shaft progress linear expansion movement
The push rod shaft described in manual actuation carries out the flexible axle of linear expansion movement, and the push rod shaft is connected to the motor, the flexible axle
Central spindle the push rod shaft is connected by unidirectional transmission, described in the central spindle can be driven by the unidirectional transmission
Push rod shaft carries out linear expansion movement and the push rod shaft cannot drive the central spindle to move by the unidirectional transmission.
Preferably, the unidirectional transmission is double rolling key clutch, and the pusher dog of the double rolling key clutch is driven
It connects the push rod shaft and outer ring is fixedly connected with the central spindle, the outer ring can drive the push rod shaft straight line to stretch by rotation
Contracting movement.
Preferably, the motor is rotating electric machine, and the output shaft of the motor is connected to the push rod by transmission parts
Axis, and the output shaft is fixedly connected with manual lever, the manual lever is fixedly connected on the pusher dog, the output
The rotation of axis can be moved by the linear expansion that the transmission, conversion of the transmission parts is the push rod shaft.
Preferably, the push rod shaft includes being equipped with externally threaded screw rod portion, and the screw rod portion is threadedly connected to first gear
In, the first gear and the second gear engaged transmission being fixed on the output shaft, the first gear connection are useful
In the limiting section for limiting the first gear linear motion, so that the first gear is converted into the straight of the push rod shaft
Line movement.
Preferably, the second gear is fixed between the output shaft and the manual lever, second tooth
The centerline collineation of the center line of wheel, the center line of the output shaft and the manual lever.
It preferably, further include housing, the motor, the first gear and the second gear are set to the housing
In, the limiting slot for avoiding the first gear from moving along a straight line with the push rod shaft is equipped in the housing.
Preferably, the motor is direct current generator.
A kind of lifting bow device for pantograph, including electric pushrod, the electric pushrod are such as above-mentioned any one
The electric pushrod.
A kind of pantograph, including lifting bow device, the lifting bow device are that device is bent in above-mentioned lifting.
Electric pushrod provided by the utility model includes: push rod shaft, for the progress linear expansion movement of driving push rod axis
Motor and the flexible axle that linear expansion movement is carried out for manual actuation push rod shaft.Push rod shaft is connected to motor, and the central spindle of flexible axle is logical
Cross unidirectional transmission connection push rod shaft, central spindle can by unidirectional transmission drive push rod shaft carry out linear expansion movement and
Push rod shaft cannot drive central spindle movement by unidirectional transmission.
In the electric pushrod, single-direction transmission can be realized between central spindle and push rod shaft, push rod shaft is stretched under the drive of the motor
When contracting, due to the setting of unidirectional transmission, central spindle is not moved；And when driving central spindle movement manually, central spindle can pass through list
Push rod shaft is driven to carry out linear expansion to transmission device.During motor driven, since central spindle will not be carried out with push rod shaft
Movement can reduce influence of the movement of push rod shaft to flexible axle central spindle, reduce because of flexible axle wear and rupture when pantograph frequently goes up and down bow
Probability, reduce limitation to flexible axle length, turning radius and quantity, and the load of motor can be mitigated.
Device is bent in lifting provided by the utility model including above-mentioned electric pushrod, and the movement of push rod shaft is to flexible axle central spindle
Influence it is smaller.
Pantograph provided by the utility model including above-mentioned lifting bow device, the movement of push rod shaft is to flexible axle central spindle
It influences smaller.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 provides the structural schematic diagram of electric pushrod by the utility model；
Fig. 2 provides the structural schematic diagram of double rolling key clutch in electric pushrod by the utility model.
Fig. 1 is into Fig. 2,1.1- motor, 1.2- second gear, 1.3- first gear, 1.4- push rod shaft, 1.5- manual operation
Bar, 2- unidirectional transmission, 2.1- outer ring, 2.2- star-wheel, 2.3- roller, 2.4- pusher dog, 3.1- flexible axle install interface, 3.2- axis
Core, 3.3- flexible axle outer tube.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The core of the utility model is to provide a kind of electric pushrod, influence of the movement of push rod shaft to flexible axle central spindle compared with
It is small.Another core of the utility model is to provide a kind of lifting bow device including above-mentioned electric pushrod, the movement of push rod shaft
Influence to flexible axle central spindle is smaller.Another core of the utility model be to provide it is a kind of including above-mentioned lifting bow device by electricity
Bow, influence of the movement of push rod shaft to flexible axle central spindle are smaller.
In a kind of specific embodiment of the provided electric pushrod of the utility model, referring to FIG. 1, including push rod shaft 1.4, electricity
Machine 1.1 and flexible axle.Motor 1.1 carries out linear expansion movement for driving push rod axis 1.4, and flexible axle is used for manual actuation push rod shaft
1.4 carry out linear expansion movement.Push rod shaft 1.4 is connected to motor 1.1.The central spindle 3.2 of flexible axle is connected by unidirectional transmission 2
Push rod shaft 1.4.It is single-direction transmission between flexible axle and push rod shaft 1.4, central spindle 3.2 can be driven by the unidirectional transmission 2
Push rod shaft 1.4 carries out linear expansion movement and push rod shaft 1.4 cannot drive central spindle 3.2 to move by unidirectional transmission 2.The electricity
Dynamic push rod can be used for pantograph, current collector and other various need remotely to control by flexible axle in the flexible device of push rod shaft 1.4.
Optionally, in flexible axle, the flexible axle installation interface 3.1 of flexible axle, which can be connected through a screw thread, is fixed on stationary bracket
On, flexible axle outer tube 3.3 and flexible axle installation 3.1 phase of interface of flexible axle are fixed, and rotation, but flexible axle outer tube 3.3 are not present between the two
It is flexible with flexible axle installation interface 3.1.Central spindle 3.2 is set to inside flexible axle outer tube 3.3 and flexible axle installation interface 3.1.Flexible axle movement
When, central spindle 3.2 rotates in flexible axle outer tube 3.3 and flexible axle installation interface 3.1.
In the present embodiment, single-direction transmission, drive of the push rod shaft 1.4 in motor 1.1 can be realized between central spindle and push rod shaft 1.4
When dynamic lower flexible, due to the setting of unidirectional transmission 2, central spindle is not moved；And when driving central spindle movement manually, central spindle can be with
Push rod shaft 1.4 is driven to carry out linear expansion by unidirectional transmission 2.During motor 1.1 drives, since central spindle will not
It is moved with push rod shaft 1.4, influence of the movement of push rod shaft 1.4 to flexible axle central spindle 3.2 can be reduced, reduced because pantograph is frequent
The probability of flexible axle wear and rupture, reduces the limitation to flexible axle length, turning radius and quantity, and can mitigate motor when lifting bow
1.1 load.
Specifically, which can be double rolling key clutch, thus guarantee push rod shaft 1.4 and flexible axle it
Between carry out reliable single-direction transmission.Fig. 2 can be specifically referred to, by mechanical design handbook (Chemical Industry Press the 5th edition) volume 2
6-305 pages of explanation: compared with 2.3 freewheel clutch of one-way type roller, working face and roller 2.3 are changed to phase adjacency pair by unidirectionally arranging
Claim arrangement, when 2.1 active of outer ring, can both direction passing movement and torque, when pusher dog active, no matter turning to, as long as n4
(surmounting) > n1 (engagement) can make throw-out-of clutch, and pusher dog 2.4, which is done, surmounts movement, and can make interrupting movement by pusher dog,
It is a kind of reversing clutch.
Wherein, the transmission connection push rod shaft 1.4 of pusher dog 2.4 of double rolling key clutch.The outer ring 2.1 of double rolling key clutch
It is fixedly connected with central spindle.Outer ring 2.1 can be by driving pusher dog 2.4 to rotate, and then drives the movement of 1.4 linear expansion of push rod shaft.
When motor 1.1 it is electric when, drive push rod shaft 1.4 carry out linear expansion movement, push rod shaft 1.4 drive bidirectional overtaking from
The pusher dog 2.4 of clutch rotates, and due to the characteristic of double rolling key clutch, when pusher dog 2.4 rotates, not will drive the rotation of outer ring 2.1,
Therefore the central spindle 3.2 connecting with outer ring 2.1 does not rotate.That is, when motor 1.1 electric must make push rod shaft 1.4 stretch, due to
The presence of double rolling key clutch, central spindle 3.2 do not rotate.
When motor 1.1 must not electricity when, from flexible axle installation interface 3.1 from manual rotating shaft core, central spindle drive bidirectional overtaking from
The outer ring 2.1 of clutch rotates, and due to the characteristic of double rolling key clutch, when outer ring 2.1 rotates, drives pusher dog rotation, and then band
Dynamic push rod shaft 1.4 acts, according to the elongation and shortening of the realization push rod shaft 1.4 clockwise, counterclockwise of direction of rotation.
Certainly, unidirectional transmission 2 can also be replaced using with the component with double rolling key clutch said function, with
Realize the single-direction transmission of flexible axle.
On the basis of the above embodiments, motor 1.1 is rotating electric machine, and the output shaft of motor 1.1 is connected by transmission parts
It being connected to push rod shaft 1.4, and output shaft is fixedly connected with manual lever 1.5, manual lever 1.5 is fixedly connected on pusher dog 2.4,
The rotation of output shaft can be moved by the linear expansion that the transmission, conversion of transmission parts is push rod shaft 1.4.Due to motor 1.1 with
Central spindle 3.2 is rotated, and can reduce the occupied space of the electric pushrod.
Further, push rod shaft 1.4 may include being equipped with externally threaded screw rod portion, which is threadedly connected to the first tooth
In wheel 1.3.First gear 1.3 and 1.2 engaged transmission of second gear being fixed on output shaft.First gear 1.3 connects
There is the limiting section for limiting the linear motion of first gear 1.3, so that first gear 1.3 is converted into push rod shaft 1.4
Linear motion.Wherein, screw rod portion, first gear 1.3 and second gear 1.2 constitute transmission parts.Push rod shaft 1.4 and first gear
Feed screw nut's assembly is constituted between 1.3, to convert rotational motion into linear motion.
When motor 1.1 is powered, the output shaft rotation of motor 1.1 drives second gear 1.2 to rotate, and 1.2 turns of second gear
Dynamic that first gear 1.3 is driven to rotate, the rotation of first gear 1.3 can drive screw rod portion to move along a straight line, to realize push rod shaft 1.4
Linear motion, meanwhile, manual lever 1.5 drive pusher dog 2.4 rotate, due to the characteristic of double rolling key clutch, pusher dog 2.4
Rotation not will drive the rotation of outer ring 2.1, therefore central spindle not can rotate.When no electricity, central spindle is rotated, central spindle drives 2.1 turns of outer ring
Dynamic, due to the characteristic of double rolling key clutch, the rotation of outer ring 2.1 drives pusher dog 2.4 to rotate, and then drives manual lever 1.5
Rotation, the rotation of manual lever 1.5 drive second gear 1.2 to rotate, and the rotation of second gear 1.2 drives first gear 1.3 to rotate,
The rotation of first gear 1.3 can drive screw rod portion to move along a straight line, to realize the linear motion of push rod shaft 1.4.
In the present embodiment, same set of driving section can be passed through between push rod shaft 1.4 and motor 1.1, push rod shaft 1.4 and central spindle
Part is driven, and can guarantee the compact-sized of the electric pushrod.
Further, second gear 1.2 can be fixed between output shaft and manual lever 1.5, and the second tooth
The centerline collineation of the center line of wheel 1.2, the center line of output shaft and manual lever 1.5, to guarantee the stationarity of transmission.
Certainly, the transmission between motor 1.1 and push rod shaft 1.4 can also be real by worm and gear or other transmission parts
It is existing.In addition, first gear 1.3 and second gear 1.2 in above-described embodiment also could alternatively be synchronous pulley and passed
It is dynamic.
On the basis of the above embodiments, which can also include housing, motor 1.1, first gear 1.3 and the
Two gears 1.2 are set in housing, are equipped in housing for avoiding 1.3 straight line of first gear from moving along a straight line with push rod shaft 1.4
Limiting slot.Housing can also play protective action while positioning to second gear 1.2.
Based on any of the above embodiments, motor 1.1 is specifically as follows direct current generator.
In addition to above-mentioned electric pushrod, the utility model additionally provides a kind of lifting bow device including electric pushrod, the liter
Drop bow device is used for pantograph.Wherein, electric pushrod can be the electric pushrod referred in any of the above embodiment, correspondingly,
Beneficial effect can be with reference to above each embodiment.Refer to the prior art for the structure of other each sections of lifting bow device,
Repeats no more herein.
In addition, the utility model additionally provides a kind of pantograph including above-mentioned lifting bow device, correspondingly, beneficial effect
It can be with reference to above each embodiment.Refer to the prior art for the structure of other each sections of the pantograph, and repeats no more herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Pantograph provided by the utility model, lifting bow device and electric pushrod are described in detail above.This
It applies specific case in text to be expounded the principles of the present invention and embodiment, the explanation of above embodiments is
It is used to help understand the method and its core concept of the utility model.It should be pointed out that for the ordinary skill people of the art
For member, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, this
A little improvement and modification are also fallen into the protection scope of the utility model claims.
Claims (9)
1. a kind of electric pushrod characterized by comprising push rod shaft (1.4), straight for driving the push rod shaft (1.4) to carry out
The motor (1.1) of line stretching motion and the flexible axle that linear expansion movement is carried out for push rod shaft (1.4) described in manual actuation, it is described
Push rod shaft (1.4) is connected to the motor (1.1), and the central spindle (3.2) of the flexible axle passes through described in unidirectional transmission (2) connection
Push rod shaft (1.4), it is straight that the central spindle (3.2) can drive the push rod shaft (1.4) to carry out by the unidirectional transmission (2)
Line stretching motion and the push rod shaft (1.4) cannot pass through the unidirectional transmission and drive central spindle (3.2) movement.
2. electric pushrod according to claim 1, which is characterized in that the unidirectional transmission (2) be bidirectional overtaking from
Clutch, the pusher dog (2.4) of the double rolling key clutch is sequentially connected the push rod shaft (1.4) and outer ring (2.1) is fixedly connected
The central spindle (3.2), the outer ring (2.1) can drive push rod shaft (1.4) linear expansion to move by rotation.
3. electric pushrod according to claim 2, which is characterized in that the motor (1.1) is rotating electric machine, the motor
(1.1) output shaft is connected to the push rod shaft (1.4) by transmission parts, and the output shaft is fixedly connected with manual operation
Bar (1.5), the manual lever (1.5) are fixedly connected on the pusher dog (2.4), and the rotation of the output shaft can pass through institute
The transmission, conversion for stating transmission parts is the linear expansion movement of the push rod shaft (1.4).
4. electric pushrod according to claim 3, which is characterized in that the push rod shaft (1.4) includes equipped with externally threaded
Screw rod portion, the screw rod portion are threadedly connected in first gear (1.3), the first gear (1.3) be fixed at it is described defeated
Second gear (1.2) engaged transmission on shaft, the first gear (1.3) are connected with for limiting the first gear
(1.3) limiting section to move along a straight line, so that the rotation of the first gear (1.3) is converted into the straight line of the push rod shaft (1.4)
Movement.
5. electric pushrod according to claim 4, which is characterized in that the second gear (1.2) is fixed at described defeated
Between shaft and the manual lever (1.5), the center line and the hand of the center line of the second gear, the output shaft
The centerline collineation of dynamic operating stick (1.5).
6. electric pushrod according to claim 4, which is characterized in that it further include housing, the motor (1.1), described
One gear (1.3) and the second gear (1.2) are set in the housing, are equipped in the housing for avoiding described first
The limiting slot that gear (1.3) moves along a straight line with the push rod shaft (1.4).
7. electric pushrod according to claim 1, which is characterized in that the motor (1.1) is direct current generator.
8. device, including electric pushrod are bent in a kind of lifting for pantograph, which is characterized in that the electric pushrod is wanted for right
Seek electric pushrod described in 1 to 7 any one.
9. a kind of pantograph, including lifting bow device, which is characterized in that the lifting bow device is liter according to any one of claims 8
Drop bow device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820717744.9U CN208263982U (en) | 2018-05-14 | 2018-05-14 | Pantograph, lifting bow device and electric pushrod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820717744.9U CN208263982U (en) | 2018-05-14 | 2018-05-14 | Pantograph, lifting bow device and electric pushrod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208263982U true CN208263982U (en) | 2018-12-21 |
Family
ID=64681826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820717744.9U Active CN208263982U (en) | 2018-05-14 | 2018-05-14 | Pantograph, lifting bow device and electric pushrod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208263982U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733200A (en) * | 2019-01-25 | 2019-05-10 | 重庆懿虹科技发展有限责任公司 | A kind of pantograph carbon slide installation and replacement method |
-
2018
- 2018-05-14 CN CN201820717744.9U patent/CN208263982U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733200A (en) * | 2019-01-25 | 2019-05-10 | 重庆懿虹科技发展有限责任公司 | A kind of pantograph carbon slide installation and replacement method |
| CN109733200B (en) * | 2019-01-25 | 2021-03-23 | 重庆懿虹科技发展有限责任公司 | Installation and replacement method for pantograph carbon slide plate |
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