CN206666948U - Railway changes pillow machine - Google Patents
Railway changes pillow machine Download PDFInfo
- Publication number
- CN206666948U CN206666948U CN201720273059.7U CN201720273059U CN206666948U CN 206666948 U CN206666948 U CN 206666948U CN 201720273059 U CN201720273059 U CN 201720273059U CN 206666948 U CN206666948 U CN 206666948U
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- chassis
- rail
- hydraulic
- hinged
- pillow
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Abstract
It the utility model is related to a kind of railway and change pillow machine, it includes chassis（2）, chassis（2）It is provided with hydraulic power mechanism（3）, hoofing part mechanism（4）, revolution Huan Zhen mechanisms（5）, lock rail mechanism（6）, lower rail avoiding mechanism（7）And braking mechanism（8）, hydraulic power mechanism is by pressure distributor（31）And engine（32）, oil pump（33）And fuel tank（34）Form；Hoofing part mechanism is by hydraulic motor decelerator one（41）, power transmission shaft（42）With installed in rail wheel（1）Big sprocket wheel on axle（43）Form；Huan Zhen mechanisms are turned round by reversing chassis（51）, change pillow chassis（52）With change pillow arm（53）Form；Rail mechanism is locked by 4 lock rail hydraulic cylinders（61）With lock rail pincers（62）Form；Lower rail avoiding mechanism is by avoidance hydraulic cylinder（71）With lower road wheel（72）Form；Braking mechanism is made up of water brake disk.Sleeper is changed using it and saves manpower, and operating efficiency is high, and it is low to change the fast cost of speed.
Description
Technical field
The utility model is related to railway machinery, and in particular to it is a kind of be used to changing railroad sleeper change pillow machine.
Background technology
In order to adapt to railway transportation, fast and safely efficiently needs, each Railway Bureau's track division need often to change failure coagulation
For native sleeper to ensure traffic safety, this is also one of recent important process content for adapting to railway speed increase needs.At present, Ministry of Railways
The mode that door changes sleeper is still based on manual work, and artificial replacing sleeper labor intensity is big, and speed is slow, and efficiency is low, is
Accelerate to change speed, even if changing one, a skylight point is also required to four, five people and comes together to complete, and changes artificial
Expense is also higher.Changing sleeper was carried out in train travel off time, and operating personnel very little can be too slow due to speed
Influence normal driving.Because artificial replacement cost is high, efficiency is low, is badly in need of wanting a kind of small-sized change to rest the head on machinery to replace manual work.
The content of the invention
The purpose of this utility model is to provide a kind of saving manpower, and operating efficiency is high, and replacing speed is fast, the low railway of cost
Change pillow machine.
Technical solution of the present utility model is：It includes the bottom that front and rear is rotatablely equipped with rail wheel respectively
Disk, chassis are provided with hydraulic power mechanism, hoofing part mechanism, revolution Huan Zhen mechanisms, lock rail mechanism, lower rail avoiding mechanism and brake
Mechanism of car, hydraulic power mechanism are made up of the pressure distributor and engine on chassis, oil pump and fuel tank, and engine is defeated
Shaft is connected with oil pump, and oil pump is respectively connected with by oil pipe and fuel tank and pressure distributor, and pressure distributor passes through oil pipe and oil
Case is connected；Hoofing part mechanism is by the hydraulic motor decelerator one on chassis, the power transmission shaft being rotatably installed on chassis
Formed with the big sprocket wheel on anterior or rear portion rail wheel shaft, the small belt pulley on the output shaft of hydraulic motor decelerator one leads to
Cross belt with the big belt pulley on power transmission shaft to be connected, the minor sprocket on power transmission shaft is connected by chain with big sprocket wheel, hydraulic motor
Decelerator one is connected by oil pipe with pressure distributor；Revolution Huan Zhen mechanisms by reversing chassis, change pillow chassis and change pillow arm form,
The side and the front portion on chassis of reversing chassis or rear portion are hinged and horizontal rotation can rotated on chassis, reversing chassis and bottom
Between disk be provided with two revolution hydraulic jacks, two revolution cylinder body of hydraulic oil cylinder afterbodys be mutually hinged with the both sides on chassis respectively,
The end of piston rod is hinged with the both sides of reversing chassis respectively drives reversing chassis in chassis upper rotary, changes pillow chassis and rotates peace
Be connected with chassis the top of side opposite side mounted in reversing chassis, and the lower end for changing pillow arm large arm is hinged on and changed on pillow chassis, changes pillow
Deviate on chassis and be provided with hydraulic motor decelerator two, hydraulic motor decelerator two with the rotate position at cooperation center of reversing chassis
The little gear installed on the output shaft band that is meshed with the gear wheel on the reversing chassis moves pillow chassis on reversing chassis
Revolution, two revolution hydraulic jacks, hydraulic motor decelerator two and change pillow arm on each hydraulic jack respectively by oil pipe and liquid
Pressure distributor is connected；Lock rail mechanism is by 4 lock rail hydraulic cylinders installed in chassis both sides front and rear and is separately mounted to each
The lock rail pincers locked between rail hydraulic cylinder piston rod end portion and chassis are formed, and each two tong arms for locking rail pincers, which intersect, to be respectively hinged at
On chassis, two tong arms towards one end of rail or so it is relative be engaged with rail, the other end is respectively with locking rail hydraulic cylinder piston rod
End be hinged two tong arm opening and closing of control, each rail hydraulic cylinder of locking is connected by oil pipe with pressure distributor respectively；Lower rail avoids
Mechanism is by two pairs of fore-and-aft clearances installed in chassis both sides front and rear and gauge with wide avoidance hydraulic cylinder and lower road wheel structure
Into each cylinder body for avoiding hydraulic cylinder is separately fixed on chassis, piston rod is respectively facing lower section, and lower road wheel is rotatably installed in avoidance
On hydraulic cylinder piston rod end Bu Xia roads wheel carrier, each hydraulic cylinder that avoids is connected by oil pipe with pressure distributor respectively；Braking machine
By being formed installed in anterior or between rear portion rail wheel shaft and chassis water brake disk, the price fixing of water brake disk is arranged on structure
On chassis, Moving plate be arranged on rail wheel shaft on, water brake disk is connected by oil pipe with pressure distributor.
It is of the present utility model to have the technical effect that：Change sleeper using it and save manpower, operating efficiency is high, change speed soon into
This is low.It can reduce labor strength, improve worker's operating condition, and it is dangerous to reduce manual work.More switched tracks using it
Pillow can greatly shorten the activity duration, advantageously ensure that the uptime of the railway system, be also beneficial to ensure traffic safety.
It can voluntarily walk on rail also has brake function, can also be locked on rail and safely carry out taking off the tiny fragments of stone, coal, etc., take out pillow, change
Pillow and railway ballast backfill operation, can avoid other locomotives and can be along backtracking to track by road under the lower road rail gantry of auxiliary again
Upper normal operation, simple to operate, easy to use, maneuverability, operational reliability are more guaranteed.It has considerable social benefit
And economic benefit, also comply with railway speed increase and the needs of great-leap-forward development.
Brief description of the drawings
Fig. 1 is the utility model embodiment stereogram 1；
Fig. 2 is the utility model embodiment stereogram 2.
Embodiment
As shown in Figure 1 and Figure 2, it includes the chassis 2 that front and rear is rotatablely equipped with rail wheel 1 respectively, setting on chassis 2
There are hydraulic power mechanism 3, hoofing part mechanism 4, revolution Huan Zhen mechanisms 5, lock rail mechanism 6, lower rail avoiding mechanism 7 and braking mechanism
8, engine 32, oil pump 33 and fuel tank 34 of the hydraulic power mechanism 3 by pressure distributor 31 and on chassis 2 are formed, hair
The output shaft of motivation 32 is connected with oil pump 33, and oil pump 33 is respectively connected with by oil pipe and fuel tank 34 and pressure distributor 31, hydraulic separate
Orchestration 31 is connected by oil pipe with fuel tank 34；Hoofing part mechanism 4 by the hydraulic motor decelerator 1 on chassis 2,
The power transmission shaft 42 and the big sprocket wheel 43 on the anterior or axle of rear portion rail wheel 1 being rotatably installed on chassis 2 are formed, hydraulic pressure horse
It is connected up to the small belt pulley on the output shaft of decelerator 1 by belt with the big belt pulley on power transmission shaft 42, on power transmission shaft 42
Minor sprocket is connected by chain with big sprocket wheel 43, and hydraulic motor decelerator 1 is connected by oil pipe with pressure distributor 31；Return
Conversion pillow mechanism 5 by reversing chassis 51, change pillow chassis 52 and change pillow arm 53 and form, the side of reversing chassis 51 with before chassis 2
Portion or rear portion are hinged and horizontal rotation can rotated on chassis 2, and two revolution liquid are provided between reversing chassis 51 and chassis 2
Compressing cylinder 54, two afterbodys for turning round the cylinder bodies of hydraulic jack 54 are mutually hinged with the both sides on chassis 2 respectively, the end of piston rod difference
It is hinged with the both sides of reversing chassis 51 and drives reversing chassis 51 in the upper rotary of chassis 2, is changed pillow chassis 52 and be rotatably installed in revolution
Chassis 51 is connected the top of side opposite side with chassis 2, and the lower end for changing the pillow large arm 55 of arm 53 is hinged on and changed on pillow chassis 52, changes pillow
Deviate on chassis 52 and be provided with hydraulic motor decelerator 2 56 with the rotate position at cooperation center of reversing chassis 51, hydraulic motor subtracts
The little gear installed on the fast output shaft of device 2 56 band that is meshed with the gear wheel on the reversing chassis 51 moves pillow chassis 52
In the upper rotary of reversing chassis 51, two revolution hydraulic jacks 54, hydraulic motor decelerator 2 56 and each hydraulic pressure changed on pillow arm 53
Oil cylinder is connected by oil pipe with pressure distributor 31 respectively；Rail mechanism 6 is locked by installed in 4 of the both sides front and rear of chassis 2
Lock rail hydraulic cylinder 61 and the lock rail pincers 62 being separately mounted between each piston rod end of lock rail hydraulic cylinder 61 and chassis 2 are formed, respectively
Two tong arms of lock rail pincers 62 intersect be respectively hinged on chassis 2, two tong arms are towards one end of rail or so is relative and rail
It is engaged, the other end is hinged with the end of the lock piston rod of rail hydraulic cylinder 61 controls two tong arm opening and closing respectively, each lock rail hydraulic cylinder
61 are connected by oil pipe with pressure distributor 31 respectively；Lower rail avoiding mechanism 7 is by installed in the two of the both sides front and rear of chassis 2
Fore-and-aft clearance is formed with gauge with wide avoidance hydraulic cylinder 71 and lower road wheel 72, each cylinder body for avoiding hydraulic cylinder 71 is fixed respectively
On chassis 2, piston rod be respectively facing lower section, lower road wheel 72 is rotatably installed in the lower road wheel for avoiding hydraulic cylinder 71 piston rod end
On frame, each hydraulic cylinder 71 that avoids is connected by oil pipe with pressure distributor 31 respectively；Braking mechanism 8 is by installed in anterior or rear portion
Water brake disk between the axle of rail wheel 1 and chassis 2 is formed, and the price fixing of water brake disk is arranged on chassis 2, Moving plate is arranged on
On the axle of rail wheel 1, water brake disk is connected by oil pipe with pressure distributor 31.
Engine 32, fuel tank 34, oil pump 33 and power transmission shaft 42 are separately mounted to the front portion on chassis 2, reversing chassis 51 and bottom
The rear portion of disk 2 is hinged, big sprocket wheel 43 be arranged on the anterior axle of rail wheel 1 on, water brake disk be arranged on the axle of rear portion rail wheel 1 with
Between chassis 2.The front portion on chassis 2 be provided be used for support change pillow arm 53 change pillow arm support 21.Oil pump 22 is hydraulic gear pump.Hair
Motivation 32 is diesel engine.
It also includes handlance 9, and handlance 9 is arranged on fuel tank 34, passes through oil pipe and the phase of oil pump 33 and company.Handlance 9
It can be withdrawn in 31 failure of the failure of engine 32 or hydraulic power mechanism 3 and pressure distributor and change pillow arm 53, ensure operation peace
Entirely.
Pressure distributor 31, which is arranged on, to be changed on pillow chassis 52, changes on pillow chassis 52 position being engaged with pressure distributor 31
Provided be fixed on change pillow chassis 52 on driver's seat 57.
Each lower road wheel 72 axially horizontal is simultaneously parallel to each other and is axially respectively perpendicular to the axial direction of each rail wheel 1.Each lower road
The both ends of the axial direction of wheel 72 are respectively equipped with wheel edge.
Pillow arm 53 is changed by large arm 55, big arm hydraulic cylinder 58, forearm 59, small arm hydraulic cylinder 60, bucket 63 and bucket hydraulic cylinder
64 are formed, the lower end of the big cylinder body of arm hydraulic cylinder 58 and change pillow chassis 52 be hinged, the middle front part of the end of piston rod and large arm 55
Downside position is hinged, and the upper end of large arm 55 is hinged with the middle rear end downside position of forearm 59, the small cylinder of arm hydraulic cylinder 60
The upper side position of the tail end of body and the postmedian of large arm 55 is hinged, the end of piston rod and the rear end of forearm 59 are hinged, and digs
The front end of the rear lower and forearm 59 of bucket 63 is hinged, the tail end of the cylinder body of bucket hydraulic cylinder 64 and the upper side of the postmedian of forearm 59
Position is hinged, the end of piston rod has been respectively articulated with two small arm link 65 and a bucket connecting rod 66, two small arm links
65 other ends being hinged with the piston rod of bucket hydraulic cylinder 64 cut with scissors the rear positions phase of position with forearm 59 and the phase of bucket 63 respectively
Be hinged, the rear medium position of bucket connecting rod 66 and the other end that the piston rod of bucket hydraulic cylinder 64 is hinged and bucket 63 is hinged,
Big arm hydraulic cylinder 58, small arm hydraulic cylinder 60 and bucket hydraulic cylinder 64 are connected by oil pipe with pressure distributor 31 respectively.
The outer wall of the bottom of bucket 63 is provided with the rope hook 67 for pull sleeper.
The pressure distributor 31 that control avoids hydraulic cylinder 71 is arranged on the left side of chassis 2 or right positions for monomer structure and led to
Oil pipe is crossed to be respectively connected with oil pump 33 and fuel tank 34.
Operation principle：Changing pillow machine can substitute to the type of Existing Railway Line II, III type defective sleeper progress greater efficiency, by
Engine 32 drives oil pump 33, and the operating position of reversing chassis 51 is controlled through pressure distributor 31, changes the selection of pillow chassis 52 and changes pillow arm
53 operating directions, the operating position of adjustment large arm 55, forearm 59 and bucket 63, the railway ballast by defective sleeper side are dug out, digging is arrived
After sleeper can be with the degree of side, vertical bolt is stirred, defective sleeper is laterally dialled down, then taken out using bucket 63 by steel wire rope
Go out；And the position that the new sleeper that side prepares to replace is placed to just extraction sleeper again backfills railway ballast, complete a job and follow
Ring.
When Heavy reparation section changes pillow operation, many large-scale construction equipments are all constructed, it is necessary to be changed when avoiding in same section
Pillow machine can will avoid hydraulic cylinder 71 and pay downwards, and 72, Shi Xia roads wheel is light by two people under ready transverse direction on road support
Pushing away can descend road to avoid, and for construction machinery by rear, changing pillow machine can be still along backtracking track operation.
Claims (9)
1. railway changes pillow machine, it is rotatablely equipped with rail wheel respectively including front and rear（1）Chassis（2）, it is characterised in that：
Chassis（2）It is provided with hydraulic power mechanism（3）, hoofing part mechanism（4）, revolution Huan Zhen mechanisms（5）, lock rail mechanism（6）, lower rail
Avoiding mechanism（7）And braking mechanism（8）, hydraulic power mechanism（3）By pressure distributor（31）With installed in chassis（2）On hair
Motivation（32）, oil pump（33）And fuel tank（34）Form, engine（32）Output shaft and oil pump（33）It is connected, oil pump（33）Pass through oil
Pipe and fuel tank（34）And pressure distributor（31）It is respectively connected with, pressure distributor（31）Pass through oil pipe and fuel tank（34）It is connected；OK
Walk drive mechanism（4）By installed in chassis（2）On hydraulic motor decelerator one（41）, be rotatably installed in chassis（2）On biography
Moving axis（42）With installed in anterior or rear portion rail wheel（1）Big sprocket wheel on axle（43）Form, hydraulic motor decelerator one（41）
Small belt pulley on output shaft passes through belt and power transmission shaft（42）On big belt pulley be connected, power transmission shaft（42）On minor sprocket lead to
Cross chain and big sprocket wheel（43）It is connected, hydraulic motor decelerator one（41）Pass through oil pipe and pressure distributor（31）It is connected；Revolution
Huan Zhen mechanisms（5）By reversing chassis（51）, change pillow chassis（52）With change pillow arm（53）Form, reversing chassis（51）Side and bottom
Disk（2）Front portion or rear portion be hinged and can be on chassis（2）Upper horizontal rotation rotates, reversing chassis（51）With chassis（2）It
Between be provided with two revolution hydraulic jacks（54）, two revolution hydraulic jacks（54）The afterbody of cylinder body respectively with chassis（2）Both sides
Mutually be hinged, the end of piston rod respectively with reversing chassis（51）Both sides be hinged drive reversing chassis（51）On chassis（2）On
Revolution, change pillow chassis（52）It is rotatably installed in reversing chassis（51）With chassis（2）Be connected the top of side opposite side, changes pillow arm
（53）Large arm（55）Lower end be hinged on change pillow chassis（52）On, change pillow chassis（52）Upper deviation and reversing chassis（51）Rotate
The position at cooperation center is provided with hydraulic motor decelerator two（56）, hydraulic motor decelerator two（56）The small tooth installed on output shaft
Wheel is with being arranged on reversing chassis（51）On gear wheel be meshed band move pillow chassis（52）In reversing chassis（51）Upper rotary, two
Individual revolution hydraulic jack（54）, hydraulic motor decelerator two（56）With change pillow arm（53）On each hydraulic jack pass through oil pipe respectively
With pressure distributor（31）It is connected；Lock rail mechanism（6）By installed in chassis（2）4 lock rail hydraulic cylinders of both sides front and rear
（61）Be separately mounted to it is each lock rail hydraulic cylinder（61）Piston rod end and chassis（2）Between lock rail pincers（62）Form, each lock
Rail clamps（62）Two tong arms intersect and be respectively hinged at chassis（2）Upper, two tong arms are towards one end of rail or so is relative and steel
Rail is engaged, the other end is respectively with locking rail hydraulic cylinder（61）The end of piston rod, which is hinged, controls two tong arm opening and closing, each to lock rail liquid
Cylinder pressure（61）Pass through oil pipe and pressure distributor respectively（31）It is connected；Lower rail avoiding mechanism（7）By installed in chassis（2）Before both sides
Two pairs of fore-and-aft clearances at portion and rear portion are with gauge with wide avoidance hydraulic cylinder（71）With lower road wheel（72）Form, respectively avoid hydraulic cylinder
（71）Cylinder body be separately fixed at chassis（2）Upper, piston rod is respectively facing lower section, lower road wheel（72）It is rotatably installed in avoidance hydraulic pressure
Cylinder（71）On the lower road wheel carrier of piston rod end, hydraulic cylinder is respectively avoided（71）Pass through oil pipe and pressure distributor respectively（31）Phase
Even；Braking mechanism（8）By installed in anterior or rear portion rail wheel（1）Axle and chassis（2）Between water brake disk form, hydraulic pressure
The price fixing of brake disc is arranged on chassis（2）Upper, Moving plate is arranged on rail wheel（1）On axle, water brake disk passes through oil pipe and hydraulic pressure
Distributor（31）It is connected.
2. railway as claimed in claim 1 changes pillow machine, it is characterised in that the engine（32）, fuel tank（34）, oil pump（33）
And power transmission shaft（42）It is separately mounted to chassis（2）Front portion, reversing chassis（51）With chassis（2）Rear portion be hinged, big sprocket wheel
（43）Installed in anterior rail wheel（1）On axle, water brake disk is arranged on rear portion rail wheel（1）Axle and chassis（2）Between.
3. railway as claimed in claim 1 changes pillow machine, it is characterised in that the chassis（2）Front portion be provided with and for support change pillow
Arm（53）Change pillow arm support（21）.
4. railway as claimed in claim 1 changes pillow machine, it is characterised in that it also includes handlance（9）, handlance（9）It is arranged on
Fuel tank（34）Above, oil pipe and oil pump are passed through（33）Xiang Binglian.
5. railway as claimed in claim 1 changes pillow machine, it is characterised in that the pressure distributor（31）Chassis is rested the head on installed in changing
（52）On, change pillow chassis（52）Upper and pressure distributor（31）The position being engaged, which is provided with to be fixed on, changes pillow chassis（52）On drive
Sail seat（57）.
6. railway as claimed in claim 1 changes pillow machine, it is characterised in that each lower road wheel（72）It is axially horizontal and mutually
Parallel and axial direction is respectively perpendicular to each rail wheel（1）Axial direction.
7. railway as claimed in claim 1 changes pillow machine, it is characterised in that each lower road wheel（72）The both ends of axial direction are set respectively
There is wheel edge.
8. railway as claimed in claim 1 changes pillow machine, it is characterised in that described to change pillow arm（53）By large arm（55）, large arm hydraulic pressure
Cylinder（58）, forearm（59）, small arm hydraulic cylinder（60）, bucket（63）With bucket hydraulic cylinder（64）Form, big arm hydraulic cylinder（58）Cylinder
The lower end of body is with changing pillow chassis（52）It is hinged, the end of piston rod and large arm（55）Middle front part downside position be hinged,
Large arm（55）Upper end and forearm（59）Middle rear end downside position be hinged, small arm hydraulic cylinder（60）The tail end of cylinder body with it is big
Arm（55）The upper side position of postmedian is hinged, the end of piston rod and forearm（59）Rear end be hinged, bucket（63）'s
Rear lower and forearm（59）Front end be hinged, bucket hydraulic cylinder（64）The tail end and forearm of cylinder body（59）The upper side of postmedian
Position is hinged, the end of piston rod has been respectively articulated with two small arm links（65）With a bucket connecting rod（66）, two forearms
Connecting rod（65）With bucket hydraulic cylinder（64）The other end that piston rod is hinged respectively with forearm（59）With bucket（63）Mutually hinge position
Rear positions be hinged, bucket connecting rod（66）With bucket hydraulic cylinder（64）The other end and bucket that piston rod is hinged（63）'s
Medium position is hinged afterwards, big arm hydraulic cylinder（58）, small arm hydraulic cylinder（60）With bucket hydraulic cylinder（64）Respectively by oil pipe with
Pressure distributor（31）It is connected.
9. railway as claimed in claim 8 changes pillow machine, it is characterised in that the bucket（63）The outer wall of bottom, which is provided with, to be used for
The rope hook of pull sleeper（67）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720273059.7U CN206666948U (en) | 2017-03-21 | 2017-03-21 | Railway changes pillow machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720273059.7U CN206666948U (en) | 2017-03-21 | 2017-03-21 | Railway changes pillow machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206666948U true CN206666948U (en) | 2017-11-24 |
Family
ID=60376674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720273059.7U Expired - Fee Related CN206666948U (en) | 2017-03-21 | 2017-03-21 | Railway changes pillow machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206666948U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797238A (en) * | 2018-05-24 | 2018-11-13 | 潘龙 | Efficiently taking off the tiny fragments of stone, coal, etc. changes pillow machine |
| CN109898375A (en) * | 2019-04-12 | 2019-06-18 | 华夏高铁技术有限公司 | Hydraulic rail changing machine |
| CN112048951A (en) * | 2020-09-01 | 2020-12-08 | 杨钧元 | Sleeper replacing device for railway track traffic |
-
2017
- 2017-03-21 CN CN201720273059.7U patent/CN206666948U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797238A (en) * | 2018-05-24 | 2018-11-13 | 潘龙 | Efficiently taking off the tiny fragments of stone, coal, etc. changes pillow machine |
| CN109898375A (en) * | 2019-04-12 | 2019-06-18 | 华夏高铁技术有限公司 | Hydraulic rail changing machine |
| CN112048951A (en) * | 2020-09-01 | 2020-12-08 | 杨钧元 | Sleeper replacing device for railway track traffic |
| CN112048951B (en) * | 2020-09-01 | 2021-06-15 | 杨钧元 | Sleeper replacing device for railway track traffic |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20200321 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |