CN207747899U - Pull rod device and tramcar - Google Patents
Pull rod device and tramcar Download PDFInfo
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- CN207747899U CN207747899U CN201721837434.2U CN201721837434U CN207747899U CN 207747899 U CN207747899 U CN 207747899U CN 201721837434 U CN201721837434 U CN 201721837434U CN 207747899 U CN207747899 U CN 207747899U
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- pull rod
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- connecting component
- elastic connecting
- rod device
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Abstract
The utility model provides a kind of pull rod device and tramcar, is related to tramcar technical field.Pull rod device includes two mounting bases being oppositely arranged in parallel and the elastic connecting component for being separately connected two mounting bases；Two mounting bases are respectively used to be connected with the body end portion in two adjacent section compartments；The run-through channel flap seat for installing run-through channel is provided in the middle part of elastic connecting component；Elastic connecting component is hinged with mounting base, run-through channel flap seat is hinged with elastic connecting component, and, compartment in the raw when, elastic connecting component is in compressive state, solves the technical issues of the second hinge unit existing in the prior art for being directed to four module low-floor tramcars cannot be satisfied working condition requirement when vehicle is run using traditional pull rod device, working condition requirement when realizing that vehicle is run using the stretching of elastic connecting component and compression function due to pull rod device, ensure that vehicle can be run with security and stability.
Description
Technical field
The utility model is related to tramcar technical fields, more particularly, to a kind of pull rod device and tramcar.
Background technology
Tramcar is the light-duty rail traffic vehicle for using electric drive and travelling in orbit, is the one of light rail vehicle
Kind, it is a kind of free of contamination environmentally friendly vehicles since tramcar uses Electric Traction, vehicle not to discharge exhaust gas.Rail
Electric car has old-fashioned tramcar and modern tram according to its state of development to divide mainly, with the development of automobile industry, always
Formula tramcar is since noise is big, poor performance, power consumption are more, and in terms of speed, comfort level and flexibility compared with automobile
It proves definitely inferior, thus old-fashioned tramcar gradually declines, modern tram not only has distinctness compared with old-fashioned tramcar
Modernization appearance color, and vehicle weight is light, speed is fast, some small and medium-sized cities can not be born with the huge throwing of subway
Money, streetcar is practical cheap selection, thus modern tram is developed rapidly, and modern tram is transported with it
Row is reliable, comfortable, energy-saving and environmental protection, it is convenient, beautiful the features such as receive the affirmative of citizen and government.
For the type of current modern tram, high floor car and low floor vehicle can be divided into according to floor level
, the height on floor directly influences the beauty in the convenience and compartment of passenger getting on/off, and " low-floor " is also light rail vehicle
A nomenclature, refer to vehicle floor and be less than 40 centimetres of light rail vehicle apart from orbital plane.It can according to vehicle low-floor region
Reach the percentage of guest room area, low floor vehicle is divided into number of different types, such as 70% low-floor, 80% low-floor and
Maximum 100% low-floor, wherein technical difficulty are exactly 100% low floor vehicle.The ground of 100% low-floor modern tram
Only 35 centimetres away from rail level of plate is not necessarily to platform, and maximum freight volume is 6 to 8 times of bus, and environmentally protective, low noise, is current
One of state-of-the-art Traffic Systems in the world.
Since 100% low floor vehicle is current growth momentum vehicle the most powerful, and for low floor vehicle,
Four module low-floor tramcars are a kind of structural shapes in low-floor electric car, according to the knot of four module low-floor tramcars
Structure, classification type are the form of MC1+T++MP+MC2, and the wherein compartments the MC1 and compartments T, the compartments the MP and compartments MC2 passes through first
Hinge unit is vertically connected with, and pull rod device is set on the top of the two compartment junctions Che Duan, and the company between MC1+T and MP+MC2
It connects, is attached by the second hinge unit, due to the vehicle marshalling architectural characteristic of four module low-floor tramcars, second
The run-through channel span of hinge unit is larger, i.e. the distance at two vehicle ends is big compared with the first hinge unit, using traditional pull rod device
The requirement for sidewindering, turning or putting first-class movement operating mode when vehicle operation is cannot be satisfied, while stabilization can not be played to run-through channel
The effect of support.
Utility model content
The purpose of this utility model is to provide a kind of pull rod device and tramcars, existing in the prior art to solve
It cannot be satisfied when vehicle is run using traditional pull rod device for the second hinge unit of four module low-floor tramcars
The technical issues of working condition requirement.
Pull rod device provided by the utility model includes two mounting bases being oppositely arranged in parallel and is separately connected two
The elastic connecting component of the mounting base；
Two mounting bases are respectively used to be connected with the body end portion in two adjacent section compartments；
The run-through channel flap seat for installing run-through channel is provided in the middle part of the elastic connecting component；
The elastic connecting component is hinged with the mounting base, and the run-through channel flap seat is cut with scissors with the elastic connecting component
Connect, also, the compartment in the raw when, the elastic connecting component is in compressive state.
Further, the elastic connecting component includes being separately connected the peace set on the both ends of the run-through channel flap seat
Fill two springs of seat and the run-through channel flap seat.
Further, the elastic connecting component further includes being connected and covering close to one end of the mounting base with the spring
The first pull rod set on the outside of one end of the spring.
Further, first pull rod is provided with the first rubber arthrosis close to one end of the mounting base；
The mounting base is hinged by the first axis pin and first rubber arthrosis.
Further, the elastic connecting component further includes being connected close to one end of the run-through channel flap seat with the spring
And it is sheathed on the second pull rod of the outside of one end of first pull rod；
First pull rod and second pull rod have overlay region.
Further, second pull rod is provided with the second rubber arthrosis close to one end of the run-through channel flap seat；
The run-through channel flap seat is hinged by the second axis pin and second rubber arthrosis.
Further, second axis pin is connected by joint ball bearing with the run-through channel flap seat.
Further, the inner wall of second pull rod is provided with for preventing first pull rod and second pull rod point
From baffle ring.
Further, first pull rod and second pull rod are connected with resilient dust close to one end of the mounting base
Cover.
Tramcar provided by the utility model includes the pull rod device as described in any one of above-mentioned technical proposal.
Pull rod device provided by the utility model includes mounting base and elastic connecting component.There are two mounting base settings, and
And two mounting bases are oppositely arranged in parallel, and are respectively used to be connected with the body end portion in two adjacent section compartments, are passed through mounting base reality
The connection for having showed pull rod device and compartment end ensure that the function of pull rod device is achieved, while it is ensured that mounting base and
The connection of body end portion is reliable, fixed, to ensure safety when vehicle operation.
Elastic connecting component is connected with two mounting bases respectively, and elastic connecting component has stretching and compression function,
To realize the major function of pull rod device.Specifically, it is provided in the middle part of elastic connecting component for installing run-through channel
Pull rod device is connected by run-through channel flap seat by run-through channel flap seat with run-through channel, and good stable support is played to run-through channel
Effect, avoid run-through channel from being destroyed, meet vehicle operation the needs of.Preferably, run-through channel flap seat and elastic connecting component
It is hinged, to enable run-through channel flap seat to be rotated relative to elastic connecting component so that run-through channel flap seat drives run-through channel opposite
It is rotated in elastic connecting component, when vehicle is run, run-through channel can be run with vehicle so that pull rod device plays run-through channel
The effect of good stable support is arrived.
When vehicle climbing or descending are run, adjacent two section compartments are in head or point head status is faced upward, pull rod device at this time
Elastic connecting component is stretched or compressed, and to adapt to the demand of vehicle operation, while elastic connecting component is hinged with mounting base, makes
It obtains elastic connecting component to rotate around the junction of elastic connecting component and mounting base relative to mounting base, so that vehicle is turning
Curved is when shaking the head, and elastic connecting component relatively rotates relative to mounting base, to meet the duty requirements of turn inside diameter, at this time
Elastic connecting component should be rotated relative to mounting base to drive adjacent compartment to run around vertical line.When vehicle both sides track not
In same horizontal line, vehicle sidewinders, at this time since the effect of the elastic force of elastic connecting component enables elastic connecting component
It is enough to relatively rotate around horizontal line, to meet the requirement that vehicle sidewinders operating mode, it ensure that vehicle can be transported to normal table
Row meets working condition requirement when vehicle operation, ensure that safety when vehicle operation.
Working condition requirement when realizing that vehicle is run using the stretching of elastic connecting component and compression function due to pull rod device,
Specifically, compartment in the raw when, elastic connecting component is in compressive state, and pull rod device is to two adjacent section compartments
Apply elastic force makes the function of pull rod device be more easily implemented, carries so that elastic connecting component can have good recovery function
The reliability of high pull rod device ensures that vehicle can be run with security and stability.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural front view for the pull rod device that the utility model embodiment provides；
Fig. 2 is the structure top view for the pull rod device that the utility model embodiment provides；
Fig. 3 is the mounting structure schematic diagram for the pull rod device that the utility model embodiment provides；
Fig. 4 is the structural schematic diagram for the tramcar that the utility model embodiment provides.
Icon：100- mounting bases；200- elastic connecting components；300- run-through channel flap seats；400- resilient dust boots；210- bullets
Spring；The first pull rods of 220-；The first rubber arthrosis of 221-；The first axis pins of 222-；The second pull rods of 230-；The second rubber arthrosis of 231-；
The second axis pins of 232-；The joints 310- ball bearing.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
In the description of the present invention, it should be noted that such as occur term "center", "upper", "lower", " left side ",
" right side ", "vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on ... shown in the drawings or
Position relationship is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply the indicated device or member
Part must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.
In addition, such as there is term " first ", " second ", " third " are used for description purposes only, be not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, such as there is term
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be mechanical connection, can also be electrical connection；It can be directly connected, it can also be indirect by intermediary
It is connected, can is the connection inside two elements.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
Embodiment 1 and embodiment 2 are described in detail below in conjunction with the accompanying drawings：
Embodiment 1
Please with reference to Fig. 1-3, a kind of pull rod device is present embodiments provided, including two be oppositely arranged in parallel installation
Seat 100 and the elastic connecting component 200 for being separately connected two mounting bases 100, specifically：
Two mounting bases 100 are respectively used to be connected with the body end portion in two adjacent section compartments；
The middle part of elastic connecting component 200 is provided with the run-through channel flap seat 300 for installing run-through channel；
Elastic connecting component 200 is hinged with mounting base 100, and run-through channel flap seat 300 is hinged with elastic connecting component 200, and
And compartment in the raw when, elastic connecting component 200 is in compressive state.
Pull rod device includes mounting base 100 and elastic connecting component 200.There are two the settings of mounting base 100, and two peaces
Dress seat 100 is oppositely arranged in parallel, and is respectively used to be connected with the body end portion in two adjacent section compartments, it is preferable that mounting base 100 is adopted
It is formed with mounting plate welding resistance, u-shaped setting, the connection of pull rod device and compartment end is realized by mounting base 100, ensured
The function of pull rod device is achieved, while it is ensured that the connection of mounting base 100 and body end portion is reliable, fixed, with
Ensure safety when vehicle operation.
Elastic connecting component 200 is connected with two mounting bases 100 respectively, and elastic connecting component 200 have stretch and
Compression function, to realize the major function of pull rod device.Specifically, it is provided with and is used at the middle part of elastic connecting component 200
Pull rod device, is connected by the run-through channel flap seat 300 for installing run-through channel by run-through channel flap seat 300 with run-through channel, is risen to run-through channel
The effect for having arrived good stable support, avoids run-through channel from being destroyed, and meets the needs of vehicle operation.Preferably, run-through channel
Flap seat 300 and elastic connecting component 200 are hinged, to enable run-through channel flap seat 300 relative to 200 turns of elastic connecting component
It is dynamic so that run-through channel flap seat 300 drives run-through channel to be rotated relative to elastic connecting component 200, when vehicle is run, run-through channel energy
It is enough to be run with vehicle so that pull rod device plays the role of good stable support to run-through channel.
When vehicle climbing or descending are run, adjacent two section compartments are in head or point head status is faced upward, pull rod device at this time
Elastic connecting component 200 is stretched or compressed, to adapt to the demand of vehicle operation, while elastic connecting component 200 and mounting base
100 is hinged so that elastic connecting component 200 can be relative to mounting base 100 around elastic connecting component 200 and mounting base 100
Junction rotates, so that vehicle is when turning is shaken the head, elastic connecting component 200 relatively rotates relative to mounting base 100,
To meet the duty requirements of turn inside diameter, elastic connecting component 200 should be rotated relative to mounting base 100 with band around vertical line at this time
Dynamic adjacent compartment operation.When the track on vehicle both sides is not in same horizontal line, vehicle sidewinders, at this time even due to elasticity
The elastic force effect of connected components 200 enables elastic connecting component 200 to relatively rotate around horizontal line, to meet vehicle side
The requirement for rolling operating mode, ensure that vehicle can be run to normal table, and meets working condition requirement when vehicle operation, ensure that vehicle
Operation when safety.
Operating mode when realizing that vehicle is run using the stretching of elastic connecting component 200 and compression function due to pull rod device is wanted
Ask, specifically, compartment in the raw when, elastic connecting component 200 is in compressive state, and pull rod device is to adjacent two
Section compartment applies elastic force makes the function of pull rod device be more easy to so that elastic connecting component 200 can have good recovery function
In realization, the reliability of pull rod device is improved, ensures that vehicle can be run with security and stability.
In a kind of specific embodiment, elastic connecting component 200 includes the difference at the both ends for being disposed through flap seat 300
Connect two springs 210 of mounting base 100 and run-through channel flap seat 300.Run-through channel flap seat 300 is set to elastic connecting component 200
Middle part so that two springs 210 are symmetrical arranged relative to run-through channel flap seat 300, make the stress of two springs 210 of run-through channel pair compared with
It is uniform, ensures that pull rod device has good stable support function to run-through channel, while elastic connecting component 200 uses spring
210, simple in structure, function is easy, it is easy to accomplish the function of elastic connecting component 200.
In the alternative of the present embodiment, elastic connecting component 200 further includes one close to mounting base 100 with spring 210
End is connected and is sheathed on the first pull rod 220 of the outside of one end of spring 210.First pull rod 220 is sheathed on the outer of spring 210
Portion, the first pull rod 220 should use tubular structure, the setting of the first pull rod 220 to play good protective effect to spring 210,
The first pull rod 220 also acts position-limiting action to spring 210 simultaneously, makes spring 210 that can only be transported in the inside of the first pull rod 220
Dynamic, to ensure that the reliability of movement, also, the first pull rod 220 is connected with spring 210 close to one end of mounting base 100, more
It is easily achieved the connection of elastic connecting component 200 and mounting base 100 so that easy to connect reliable.
Further, the first pull rod 220 is provided with the first rubber arthrosis 221, mounting base close to one end of mounting base 100
100 is hinged by the first axis pin 222 and the first rubber arthrosis 221.At runtime due to vehicle, elastic connecting component 200 and peace
The junction stress for filling seat 100 is larger, easy tos produce abrasion and noise, by the way that the first rubber arthrosis 221 is arranged, makes mounting base
100 is hinged by the first axis pin 222 and the first rubber arthrosis 221, plays the role of good damping, buffering and noise reduction, right
Mounting base 100 and the first pull rod 220 play good protective effect, improve the service life of pull rod device.
In another alternative of the present embodiment, elastic connecting component 200 further includes with spring 210 close to run-through channel flap seat
300 one end is connected and is sheathed on the second pull rod 230 of the outside of one end of the first pull rod 220.Second pull rod 230 is sheathed on
The outside of one pull rod 220, the second pull rod 230 should also use tubular structure, and the setting of the second pull rod 230 is to spring 210 and first
Pull rod 220 plays good protective effect, while the second pull rod 230 also acts limit to spring 210 and the first pull rod 220
Position effect, makes spring 210 and the first pull rod 220 can only be in the internal motion of the second pull rod 230, to ensure that the reliable of movement
Property, also, the second pull rod 230 is connected with spring 210 close to one end of run-through channel flap seat 300, it is easier to realize elastic connection group
The connection of part 200 and run-through channel flap seat 300 so that easy to connect reliable.
Working condition requirement when realizing that vehicle is run using the stretching of spring 210 and compression due to pull rod device, and first draws
Bar 220 and the second pull rod 230 cannot achieve stretching and compression, to ensure that the first pull rod 220 and the second pull rod 230 adapt to spring
The requirement of 210 stretching motion, the first pull rod 220 are inserted into the inside of the second pull rod 230, the first pull rod 220 and the second pull rod 230
There should be overlay region, also, the first pull rod 220 and the second pull rod 230 should be overlapped at the middle part of spring 210 and intersect, in overlay region
The first pull rod 220 and the second pull rod 230 between should have gap, first pull rod 220 and the second pull rod 230 at overlay region both ends
It is not attached to, convenient for enabling spring 210 that the first pull rod 220 and the second pull rod 230 to be driven to occur relatively when carrying out stretching motion
Movement, to ensure that the function of pull rod device is achieved.
In a kind of specific embodiment, the inner wall of the second pull rod 230 is provided with for preventing the first pull rod 220 and second
The baffle ring that pull rod 230 detaches.Since spring 210 can drive the first pull rod 220 and the second pull rod 230 when carrying out stretching motion
Relative motion occurs, to avoid the stroke of spring 210 is larger the first pull rod 220 is caused to be pulled out from the second pull rod 230, to vehicle
Safe operation cause larger hidden danger, the second pull rod 230 inner wall be arranged baffle ring, it is good to be played to the first pull rod 220
Good position-limiting action ensures the safety of pull rod device movement.
Further, the first pull rod 220 and the second pull rod 230 are connected with resilient dust boot close to one end of mounting base 100
400.Resilient dust boot 400 also has the function of stretching and compress, to adapt to the movement of the first pull rod 220 and the second pull rod 230,
The stationarity and reliability of movement are further increased, meanwhile, there is gap, elasticity between the first pull rod 220 and the second pull rod 230
The setting of dust cover 400 avoids dust and carries out in gap, and gap is caused to block, to the first pull rod 220 and the second pull rod 230
Movement impacts.Preferably, resilient dust boot 400 does waviness, and material uses rubber material, to meet the first pull rod
220 and second pull rod 230 movement need.
In the alternative of the present embodiment, the second pull rod 230 is provided with the second rubber close to one end of run-through channel flap seat 300
Joint 231, run-through channel flap seat 300 are hinged by the second axis pin 232 and the second rubber arthrosis 231.At runtime due to vehicle, bullet
Property connection component 200 and the junction stress of run-through channel flap seat 300 it is also larger, easy to produce abrasion and noise, pass through setting the
Two rubber arthrosis 231 keep run-through channel flap seat 300 hinged by the second axis pin 232 and the second rubber arthrosis 231, play good
Damping, buffering and noise reduction effect, good protective effect is played to run-through channel flap seat 300 and the second pull rod 230, improve
The service life of pull rod device.
Specifically, the second axis pin 232 is connected by joint ball bearing 310 with run-through channel flap seat 300.Run-through channel flap seat 300
Rotation of the run-through channel relative to elastic connecting component 200 is hingedly realized by the second axis pin 232 and the second rubber arthrosis 231,
Make vehicle at runtime, run-through channel there can be good cooperative motion with vehicle, by the way that joint ball bearing 310, Ke Yiman is arranged
Sufficient run-through channel is servo-actuated by a small margin, and Hard link is avoided to cause the stress destruction of interior noise and run-through channel, is closed by the first rubber
The setting of the 221, second rubber arthrosis 231 of section and joint ball bearing 310 makes pull rod device be in a certain range of soft company
It connects, good weakening effect is played to noise, the abnormal sound in run-through channel and compartment, increases the comfort level in compartment, improve
The trip experience of passenger.
Embodiment 2
As shown in figure 4, a kind of tramcar is present embodiments provided, including the pull rod device in embodiment 1.Tramcar
Can be four module low-floor tramcars, pull rod device is set on the second hinge unit, since pull rod device is connected using elasticity
The stretching of connected components 200 and compression function realize working condition requirement when vehicle operation, can preferably meet when vehicle is run
Sidewinder, turn or put the requirement of first-class movement operating mode, at the same the setting of run-through channel flap seat 300 run-through channel is played it is good steady
Determine supporting role, ensure that vehicle can be run with security and stability.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of pull rod device, which is characterized in that including two mounting bases being oppositely arranged in parallel and be separately connected two institutes
State the elastic connecting component of mounting base；
Two mounting bases are respectively used to be connected with the body end portion in two adjacent section compartments；
The run-through channel flap seat for installing run-through channel is provided in the middle part of the elastic connecting component；
The elastic connecting component is hinged with the mounting base, and the run-through channel flap seat is hinged with the elastic connecting component, and
And the compartment in the raw when, the elastic connecting component is in compressive state.
2. pull rod device according to claim 1, which is characterized in that the elastic connecting component includes being set to the perforation
Two springs for being separately connected the mounting base and the run-through channel flap seat at the both ends of road flap seat.
3. pull rod device according to claim 2, which is characterized in that the elastic connecting component further includes and the spring
It is connected and is sheathed on the first pull rod of the outside of one end of the spring close to one end of the mounting base.
4. pull rod device according to claim 3, which is characterized in that first pull rod is close to one end of the mounting base
It is provided with the first rubber arthrosis；
The mounting base is hinged by the first axis pin and first rubber arthrosis.
5. pull rod device according to claim 3, which is characterized in that the elastic connecting component further includes and the spring
It is connected and is sheathed on the second pull rod of the outside of one end of first pull rod close to one end of the run-through channel flap seat；
First pull rod and second pull rod have overlay region.
6. pull rod device according to claim 5, which is characterized in that second pull rod is close to the run-through channel flap seat
One end is provided with the second rubber arthrosis；
The run-through channel flap seat is hinged by the second axis pin and second rubber arthrosis.
7. pull rod device according to claim 6, which is characterized in that second axis pin by joint ball bearing with it is described
Run-through channel flap seat is connected.
8. pull rod device according to claim 5, which is characterized in that the inner wall of second pull rod is provided with for preventing
The baffle ring of first pull rod and second pull rod separation.
9. pull rod device according to claim 5, which is characterized in that first pull rod and second pull rod are close to institute
The one end for stating mounting base is connected with resilient dust boot.
10. a kind of tramcar, which is characterized in that including pull rod device as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721837434.2U CN207747899U (en) | 2017-12-25 | 2017-12-25 | Pull rod device and tramcar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721837434.2U CN207747899U (en) | 2017-12-25 | 2017-12-25 | Pull rod device and tramcar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207747899U true CN207747899U (en) | 2018-08-21 |
Family
ID=63150549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721837434.2U Active CN207747899U (en) | 2017-12-25 | 2017-12-25 | Pull rod device and tramcar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207747899U (en) |
-
2017
- 2017-12-25 CN CN201721837434.2U patent/CN207747899U/en active Active
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