CN113859291A - Railway freight car top cap touching mechanism control system - Google Patents
Railway freight car top cap touching mechanism control system Download PDFInfo
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- CN113859291A CN113859291A CN202111138776.6A CN202111138776A CN113859291A CN 113859291 A CN113859291 A CN 113859291A CN 202111138776 A CN202111138776 A CN 202111138776A CN 113859291 A CN113859291 A CN 113859291A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims description 12
- 239000000428 dust Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D39/00—Wagon or like covers; Tarpaulins; Movable or foldable roofs
- B61D39/006—Opening and closing means
- B61D39/007—Controlled by trackside means
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
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- Train Traffic Observation, Control, And Security (AREA)
Abstract
A control system for a railway wagon top cover touch mechanism comprises a first electric push rod, a second electric push rod, a first control box and a second control box; the first electric push rod and the second electric push rod are used for driving a contact of a railway wagon top cover touch mechanism to stretch; the first control box is used for driving the first electric push rod and the second electric push rod to stretch and retract respectively, and the second control box drives the first electric push rod and the second electric push rod to stretch and retract synchronously. The control system for the railway wagon top cover touch mechanism can remotely control the touch mechanism, and compared with pneumatic control and hydraulic control, the control system is simple and convenient to operate, small in maintenance workload, more low-temperature resistant, more reliable, more durable and safer.
Description
Technical Field
The invention belongs to the technical field of railway vehicles, and particularly relates to a control system for a top cover touch mechanism of a railway wagon.
Background
In recent years, in order to solve the problem of environmental pollution such as throwing and dust raising in the transportation process of bulk cargos such as fly ash, coal, ore and the like, a part of hopper cars are additionally provided with a split type synchronous moving telescopic tarpaulin top cover device on a carriage, the opening and closing of the top cover are realized by touching a ground mechanical touch mechanism during the running of the car, the ground touch mechanism contacts adopted at present are mostly movable structures in order to adapt to different car types and then are mixed and compiled after the touch top cover is additionally arranged, and the reliable control on the expansion and contraction of the touch mechanism contacts in a low-temperature environment of minus 40 ℃ cannot be met by adopting the control system or pneumatic control or hydraulic control of the contacts of the movable structures. Therefore, there is a need for a reliable control system that is temperature tolerant to control the retraction of the ground engaging mechanism.
Disclosure of Invention
The invention aims to provide a control system for a railway wagon top cover touch mechanism, which can reliably and stably run in an outdoor environment with lower temperature.
In order to achieve the aim, the invention provides a control system of a railway wagon top cover touch mechanism, which comprises a first electric push rod, a second electric push rod, a first control box and a second control box, wherein the first electric push rod is connected with the first electric push rod through a first connecting rod;
the first electric push rod and the second electric push rod are used for driving a contact of a railway wagon top cover touch mechanism to stretch;
the first control box is used for driving the first electric push rod and the second electric push rod to stretch and retract respectively, and the second control box drives the first electric push rod and the second electric push rod to stretch and retract synchronously.
Preferably, the first electric push rod and the second electric push rod respectively comprise a push rod assembly, a mounting seat, a protective cover and a heat insulation layer;
the push rod assembly is arranged on the mounting seat, the protective cover is buckled on the mounting seat and covers the push rod assembly, and the heat insulation layer is arranged on the inner wall of the protective cover.
Preferably, the push rod assembly comprises a push rod shell and a push rod capable of extending out or retracting back from the push rod shell, a connecting hole is formed in the end portion of the push rod and used for being connected with the contact, and the first control box or the second control box can control the push rod to stretch out and draw back.
Preferably, the push rod assembly further comprises a first stopper and a second stopper, the first stopper is used for limiting the retraction distance of the push rod, the second stopper is used for limiting the extension distance of the push rod, and the first control box or the second control box can control the push rod to stop moving according to signals of the first stopper and the second stopper respectively.
Preferably, the first electric push rod and the second electric push rod further comprise a dust cover, and the dust cover is wrapped at the joint of the push rod and the push rod shell.
Preferably, an air isolation zone is formed between the heat insulation layer and the push rod assembly.
Preferably, the first control box further comprises a box body, a box door, and a temperature controller, a heating plate, a first driver and a second driver which are arranged in the box body;
the heating plate is used for heating the interior of the box body, and the temperature controller is used for monitoring the temperature of the interior of the box body and controlling the operation of the heating plate;
the box door is buckled on one side of the box body, and a display screen is arranged on the surface of the box door and used for displaying the temperature monitored by the temperature controller;
the first driver and the second driver are respectively electrically connected with the first electric push rod and the second electric push rod and used for controlling the extension and retraction of the first electric push rod and the second electric push rod.
Preferably, the first control box further comprises a plurality of first control switches and a master control switch, the plurality of first control switches are respectively used for controlling the extension or retraction of the first driver and the second driver, and the master control switch is used for controlling the opening and closing of the first driver and the second driver.
Preferably, the second control box comprises a pair of second control switches, and the pair of second control switches are electrically connected with the first driver and the second driver and are respectively used for controlling the synchronous operation of the first driver and the second driver so as to synchronously extend or retract the first electric push rod and the second electric push rod.
Preferably, the second control box further comprises a maintenance change-over switch for controlling the opening and closing of the pair of second control switches.
The invention relates to a control system for a railway wagon top cover touch mechanism, which has the beneficial effects that: can compare pneumatic control and hydraulic control to touching remote control of mechanism, easy operation is convenient, and the maintenance work load is little, more low temperature resistant, more reliable, more durable, safer.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
FIG. 1 illustrates a control schematic of a wagon roof touch mechanism control system according to an exemplary embodiment of the present invention;
fig. 2 is a schematic structural view illustrating a first electric push rod and a second electric push rod in a railway wagon roof touch mechanism control system according to an exemplary embodiment of the present invention;
FIG. 3 shows a side view of FIG. 2;
FIG. 4 is a schematic diagram of a first control box of the wagon cover touch mechanism control system according to an exemplary embodiment of the invention;
FIG. 5 is a schematic diagram showing the internal structure of a first control box of a wagon cover touch mechanism control system according to an exemplary embodiment of the invention;
FIG. 6 is a schematic illustration of a second control box of a railway wagon roof touch mechanism control system according to an exemplary embodiment of the present invention;
fig. 7 shows a schematic circuit diagram of a control system for a roof touch mechanism of a railway wagon according to an exemplary embodiment of the present invention.
Description of reference numerals:
1 first electric putter, 11 push rod subassembly, 111 push rod, 112 first stopper, 113 second stoppers, 12 mount pads, 13 protection casings, 14 heat preservation, 15 dust covers, 16 air median, 2 first electric putter, 3 first control box, 31 box, 32 chamber door, 321 display screen, 33 temperature control appearance, 34 hot plates, 35 first driver, 36 second driver, 37 total control switch, 38 first control switch, 39 baffles, 40 box heat preservation, 4 second control box, 41 maintenance change over switch, 42 second control switch, 43 power indicator, 44 stop switch.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In order to solve the problems in the prior art, the present invention provides a control system for a roof touching mechanism of a railway wagon, please refer to fig. 1 to 7, which includes a first electric push rod 1, a second electric push rod 2, a first control box 3 and a second control box 4;
the first electric push rod 1 and the second electric push rod 2 are used for driving contacts of a railway wagon top cover touch mechanism to stretch;
the first control box 3 is used for respectively driving the first electric push rod 1 and the second electric push rod 2 to stretch out and draw back, and the second control box 4 is used for driving the first electric push rod 1 and the second electric push rod 2 to stretch out and draw back synchronously.
The control system for the railway wagon top cover touch mechanism can remotely control the touch mechanism, and compared with pneumatic control and hydraulic control, the control system is simple and convenient to operate, small in maintenance workload, more low-temperature resistant, more reliable, more durable and safer.
In this embodiment, the first control box 3 is installed in a control site, and the second control box 4 is installed in a control room.
Referring to fig. 2 and 3, each of the first electric putter 1 and the second electric putter 2 includes a putter assembly 11, a mounting seat 12, a protective cover 13, and an insulating layer 14;
the push rod assembly 11 is arranged on the mounting base 12, the protective cover 13 is buckled on the mounting base 12 and is covered on the push rod assembly 11, and the heat insulation layer 14 is arranged on the inner wall of the protective cover 13.
The push rod assembly 11 comprises a push rod housing and a push rod 111 capable of extending out or retracting back from the push rod housing, a connecting hole is formed in the end of the push rod 111 and used for being connected with a contact, and the first control box 3 or the second control box 4 can control the extension and retraction of the push rod 111. Push rod assembly 11 is current product, chooses for use low temperature resistant servo motor and T type ball as power and transmission, makes push rod 111 stretch out the back and has the self-locking function, and its concrete structure and flexible principle are no longer repeated.
The protective cover 13 is n-shaped and comprises a top plate and a pair of side plates, the side plates are connected to the mounting base 12, and the heat-insulating layer 14 is attached to the inner wall of the protective cover 13 and used for preventing rain and preserving heat. An air isolation belt 16 is formed between the heat insulation layer 14 and the push rod assembly 11, so that the problem that the sun directly shines at high temperature in summer is solved, the influence of the high temperature of the protective cover 13 on the push rod assembly 11 is solved, and meanwhile, the heat dissipation of the push rod assembly 11 is facilitated.
The push rod assembly 11 further comprises a first stopper 112 and a second stopper 113, the first stopper 112 is used for limiting the retraction distance of the push rod 111, the second stopper 113 is used for limiting the extension distance of the push rod 111, and the first control box 3 or the second control box 4 can control the push rod 111 to stop moving according to the signals of the first stopper 112 and the second stopper 113 respectively. The first stopper 112 is used for limiting the retraction limit position of the push rod 111, and the second stopper 113 is used for limiting the extension limit position of the push rod 111.
The first stopper 112 and the second stopper 113 are respectively disposed at two ends of the push rod housing, and are used for controlling the extension range of the push rod 111, and are self-contained structures of the push rod assembly 11, and the usage principle thereof is well known to those skilled in the art, and will not be described in detail.
The first electric push rod 1 and the second electric push rod 2 further comprise a dust cover 15, and the dust cover 15 is covered at the joint of the push rod 111 and the push rod shell.
In this embodiment, the dust cover 15 is a retractable sleeve structure, and the heat insulating layer 14 is made of heat insulating cotton.
Referring to fig. 4 and 5, the first control box 3 includes a box 31, a box door 32, a temperature controller 33 disposed in the box 31, a heating plate 34, a first driver 35, and a second driver 36;
the heating plate 34 is used for heating the inside of the box body 31, and the temperature controller 33 is used for monitoring the temperature inside the box body 31 and controlling the operation of the heating plate 34;
the door 32 is fastened to one side of the box 31, and a display screen 321 is arranged on the surface of the door 32 and used for displaying the temperature monitored by the temperature controller 33;
the first driver 35 and the second driver 36 are electrically connected with the first electric putter 1 and the second electric putter 2, respectively, and are used for controlling the extension and contraction of the first electric putter 1 and the second electric putter 2.
A baffle 39 and a box heat-insulating layer 40 are arranged in the box body 31, the baffle 39 comprises four side faces, one end of the baffle 39 is connected to the side wall of the box body 31, the box heat-insulating layer 40 is arranged on the inner surface of the box body 31, and an air heat-insulating belt is formed between the baffle 39 and the inner surface of the box body 31 so as to facilitate heat dissipation.
The temperature control box further comprises a controller, the display screen 321 is used for displaying the temperature of the temperature controller 33, the temperature in the box is ensured to be within the normal working range of each element in the box, the space in the box body 31 is adjusted through the temperature controller 33 and the heating plate 34, the temperature in the box body 31 is ensured to be within the range of 0-55 ℃ when the outdoor temperature is minus 40 ℃, and the temperature in the box body can be ensured to be within the range of 15-25 ℃ all the time through the heating plate 34 and the temperature controller 33. The controller controls the heating plate 34 to perform heating or stop heating according to the temperature signal of the temperature controller 33, and controls the first driver 35 and the second driver 36 to operate.
The first control box 3 further includes a plurality of first control switches 38 and a master control switch 37, the plurality of first control switches 38 are respectively used for controlling the extension or retraction of the first driver 35 and the second driver 36, and the master control switch 37 is used for controlling the opening and closing of the first driver 35 and the second driver 36. The master control switch 37 is disposed inside the box body 31, the first control switch 38 is disposed on the box door 32, and the box lock is further disposed on the box door 32 and used for locking with the box body 31.
In this embodiment, the first control switch 38 is used for controlling the extension and retraction of the first electric putter 1, the extension and retraction of the second electric putter 2, the power switch and the stop switch, wherein the control switches 38 for controlling the first electric putter 1 and the second electric putter 2 are respectively provided with a display lamp, when the putter 111 of the first electric putter 1 and/or the second electric putter 2 reaches the extension limit position or the retraction limit position, the controller controls the putter 111 to stop the extension or the retraction according to the signals of the first limiter 112 and the second limiter 113, and the corresponding display lamp in the first control switch 38 is turned on to prompt.
In this embodiment, two drivers are arranged in the first control box 3, so that the extension and retraction of the first electric push rod 1 and the second electric push rod 2 can be independently controlled, and the control system can be conveniently controlled, debugged and daily checked and maintained.
Referring to fig. 6, the second control box 4 includes a pair of second control switches 42, and the pair of second control switches 42 is electrically connected to the first driver 35 and the second driver 36 and respectively used for controlling the synchronous operation of the first driver 35 and the second driver 36, so that the first electric push rod 1 and the second electric push rod 2 synchronously extend or retract. In order to facilitate control, 2 electric push rods stretch out and draw back simultaneously, the control box in the control room links the stretching-out and the retracting-back of the 2 electric push rods, and the two drivers synchronously stretch out or retract back through a pair of second control switches 42.
The second control box 4 further includes a service changeover switch 41, and the service changeover switch 41 is used to control the opening and closing of a pair of second control switches 42. The maintenance change-over switch 41 is also internally provided with a display lamp, when the maintenance change-over switch is used for controlling the system, the pair of second control switches 42 of the second control box 4 can control the first driver 35 and the second driver 36 to synchronously operate, the first control switch 38 of the first control box 3 cannot simultaneously control the first driver 35 and the second driver 36 to operate, and the display lamp of the maintenance change-over switch 41 is not lighted; when the maintenance changeover switch 41 is pressed, the second control switch 42 cannot control the operation of the first driver 35 and the second driver 36, and the first control switch 38 of the first control box 3 can control the operation of the first driver 35 and the second driver 36, at which time the display lamp of the maintenance changeover switch 41 is turned on. Through overhauing change over switch, can avoid control room and on-the-spot control box repetitive control and accidental control to appear, guarantee that two control boxes can not control simultaneously, improved control system's security.
The second control box 4 is arranged in the control room, the controller is usually arranged at a position 30m away from the electric push rod, remote control can be realized through the second control box 4, and the second control box and the first control box 3 are matched together to avoid signal attenuation.
The pair of second control switches 42 of the second control box 4 are respectively an extension switch and a retraction switch, and a display lamp is arranged in the second control box, when the extension switch is pressed down, the push rods 111 of the first electric push rod 1 and the second electric push rod 2 extend out simultaneously, when the extension limit position is reached, the display lamp is on, when the retraction switch is pressed down, the push rods 111 of the first electric push rod 1 and the second electric push rod 2 retract simultaneously, and when the retraction limit position is reached, the display lamp is on.
The second control box 4 further includes a power indicator lamp 43 and a stop switch 44, the stop switch 44 is used for switching on and off the power supply of the second control box 4, and the power indicator lamp 43 is used for prompting the working state of the second control box 4.
The invention relates to a control system of a railway wagon top cover touch mechanism, which is used for a ground touch device of a hopper wagon touch type top cover and provides conditions for mixed compiling after touch type top covers are additionally arranged on different hopper wagon models; the method provides guarantee for popularization of the touch top cover of the railway hopper car, has important practical significance for realizing environment-friendly transportation of the hopper car, and has considerable market in the future;
the control system provides a control system solution for a ground touch mechanism in a low-temperature environment, and realizes remote line control and monitoring of a control room more than 30m away from the installation position of the touch mechanism, and compared with pneumatic control and hydraulic control, the control system is simple and convenient to operate, small in maintenance workload, more low-temperature resistant, more reliable, more durable and safer;
the control system can ensure that the contacts on the two sides can be synchronously contracted, has a self-locking function, ensures that the contacts cannot be pushed back when the contacts and the top cover are touched, and ensures that the top cover provides sufficient opening and closing force in the process of touching; the position of the push rod 111 can be intuitively fed back by matching the limiting stopper with a display lamp button, the first control box 3 positioned on the site is independently controlled by adopting 2 electric push rods, the control and debugging of a control system can be ensured near a touch mechanism, and the second control box 4 of a control room is in linkage control by adopting 2 electric push rods, so that the operation convenience is improved, and misoperation is prevented; the second control box 4 in the control room is provided with an overhaul change-over switch 41, and when the electric control device is normally used, the electric push rod can be controlled only in the control room, and the overhaul change-over switch 41 can be opened during debugging, daily maintenance and detection, so that the debugging, daily maintenance and detection of a control system and a ground touch device can be visually carried out on site.
It should be noted that the wiring arrangement between the components of the first control box 3 and the second control box 4 and the controller, i.e. the PLC, is implemented according to the design of each function and control logic, and is specifically common knowledge in the art, and will not be described again.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A control system for a railway wagon top cover touch mechanism is characterized by comprising a first electric push rod (1), a second electric push rod (2), a first control box (3) and a second control box (4);
the first electric push rod (1) and the second electric push rod (2) are used for driving a contact of a railway wagon top cover touch mechanism to stretch;
the first control box (3) is used for respectively driving the first electric push rod (1) and the second electric push rod (2) to stretch out and draw back, and the second control box (4) drives the first electric push rod (1) and the second electric push rod (2) to stretch out and draw back synchronously.
2. The railway wagon roof touch mechanism control system as claimed in claim 1, wherein the first electric push rod (1) and the second electric push rod (2) each comprise a push rod assembly (11), a mounting seat (12), a protective cover (13) and an insulating layer (14);
the push rod assembly (11) is arranged on the mounting seat (12), the protective cover (13) is buckled on the mounting seat (12) and is covered on the push rod assembly (11), and the heat insulation layer (14) is arranged on the inner wall of the protective cover (13).
3. A railway wagon roof touch mechanism control system as claimed in claim 2, wherein the push rod assembly (11) comprises a push rod housing and a push rod (111) which can extend out or retract back from the push rod housing, a connecting hole is formed in the end of the push rod (111) for connecting with the contact, and the first control box (3) or the second control box (4) can control the extension and retraction of the push rod (111).
4. A railway wagon roof touch mechanism control system as claimed in claim 3, wherein the push rod assembly (11) further comprises a first stopper (112) and a second stopper (113), the first stopper (112) is used for limiting the retraction distance of the push rod (111), the second stopper (113) is used for limiting the extension distance of the push rod (111), and the first control box (3) or the second control box (4) can control the push rod (111) to stop moving according to signals of the first stopper (112) and the second stopper (113) respectively.
5. The railway wagon roof touch mechanism control system as claimed in claim 3, wherein the first electric push rod (1) and the second electric push rod (2) further comprise a dust cover (15), and the dust cover (15) is wrapped at the joint of the push rod (111) and the push rod housing.
6. A railway wagon roof touch mechanism control system as claimed in claim 2, wherein an air isolation zone (16) is formed between the insulation layer (14) and the push rod assembly (11).
7. The railway wagon roof touch mechanism control system as claimed in claim 1, wherein the first control box (3) further comprises a box body (31), a box door (32), and a temperature controller (33), a heating plate (34), a first driver (35) and a second driver (36) which are arranged in the box body (31);
the heating plate (34) is used for heating the interior of the box body (31), and the temperature controller (33) is used for monitoring the temperature of the interior of the box body (31) and controlling the operation of the heating plate (34);
the box door (32) is buckled on one side of the box body (31), and a display screen (321) is arranged on the surface of the box door (32) and used for displaying the temperature monitored by the temperature controller (33);
the first driver (35) and the second driver (36) are respectively electrically connected with the first electric push rod (1) and the second electric push rod (2) and used for controlling the extension and retraction of the first electric push rod (1) and the second electric push rod (2).
8. The railway wagon roof touch mechanism control system as claimed in claim 7, wherein the first control box (3) further comprises a plurality of first control switches (38) and a master switch (37), the plurality of first control switches (38) are respectively used for controlling the extension or retraction of the first driver (35) and the second driver (36), and the master switch (37) is used for controlling the opening and closing of the first driver (35) and the second driver (36).
9. A control system for a roof cover touch mechanism of a railway wagon as claimed in claim 8, wherein the second control box (4) comprises a pair of second control switches (42), and the pair of second control switches (42) is electrically connected with the first driver (35) and the second driver (36) and is used for controlling the synchronous operation of the first driver (35) and the second driver (36) respectively so as to synchronously extend or retract the first electric push rod (1) and the second electric push rod (2).
10. A railway wagon roof touching mechanism control system as claimed in claim 9, wherein the second control box (4) further comprises a service changeover switch (41), the service changeover switch (41) being used for controlling the opening and closing of the pair of second control switches (42).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111138776.6A CN113859291A (en) | 2021-09-27 | 2021-09-27 | Railway freight car top cap touching mechanism control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111138776.6A CN113859291A (en) | 2021-09-27 | 2021-09-27 | Railway freight car top cap touching mechanism control system |
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| CN202111138776.6A Pending CN113859291A (en) | 2021-09-27 | 2021-09-27 | Railway freight car top cap touching mechanism control system |
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| CN107628047A (en) * | 2017-09-27 | 2018-01-26 | 株洲华盛实业有限公司 | A kind of method for opening and closing and switching mechanism of railway freight gondola car folding type movable top cover |
| CN207360351U (en) * | 2017-10-10 | 2018-05-15 | 中车齐齐哈尔车辆有限公司 | A kind of goods train carriage and its head cover switching mechanism |
| CN108263414A (en) * | 2018-01-17 | 2018-07-10 | 中车齐齐哈尔车辆有限公司 | Railway freight-car head cover opening/closing system and its ground collision head device |
| CN208813211U (en) * | 2018-09-30 | 2019-05-03 | 中车齐齐哈尔车辆有限公司 | A kind of lorry top cover opening and closing device |
| CN109606405A (en) * | 2019-01-28 | 2019-04-12 | 河北拓展机车配件科技有限公司 | A kind of cargo train carriage head cover closing environment friendly system |
| CN110203227A (en) * | 2019-06-25 | 2019-09-06 | 神华铁路货车运输有限责任公司 | Opposite opened removable top cover and truck |
| CN113002572A (en) * | 2021-03-22 | 2021-06-22 | 中车太原机车车辆有限公司 | Long-range wireless remote control switching system of railway ore hopper car top cap and bottom door |
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