CN114771586B - Opening and closing device for vehicle body bottom plate - Google Patents
Opening and closing device for vehicle body bottom plate Download PDFInfo
- Publication number
- CN114771586B CN114771586B CN202210520704.6A CN202210520704A CN114771586B CN 114771586 B CN114771586 B CN 114771586B CN 202210520704 A CN202210520704 A CN 202210520704A CN 114771586 B CN114771586 B CN 114771586B
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- lock
- bottom plate
- opening
- closing device
- fixed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Support Devices For Sliding Doors (AREA)
Abstract
The invention relates to the technical field of rail transit, in particular to a car body bottom plate opening and closing device, which comprises: the moving mechanism comprises a slide way and a roller, the locking mechanism comprises an active lock and a fixed lock, the rotating mechanism comprises an active module and a passive module, the handle is pulled to unlock the active lock, the active module and the passive module rotate to drive the slide way and the bottom plate to move downwards, the roller rolls along the slide way to drive the bottom plate to be opened along the length direction of the slide way. Through setting up rotary mechanism for slide and bottom plate can move one section distance outward, and play certain supporting role to bottom plate and slide, through setting up the removal subassembly, make the bottom plate that shifts out down to move along the slide side and open, through setting up locking mechanism, the unblock of bottom plate can be realized promptly to the pulling handle, also can be along with the removal locking of bottom plate, easy operation adds the fixed lock and locks the bottom plate, the locking effect of bottom plate has been increased, the efficiency of switching process has been improved.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a vehicle body bottom plate opening and closing device.
Background
At present, generally all be provided with the equipment compartment in the below of automobile body, equipment is installed in the equipment compartment under the car, and the equipment compartment is generally enclosed by the end plate of skeleton, bottom plate, both ends and the skirtboard of both sides to protect equipment under the car, avoid suffering the interference of foreign matter such as sand blown by the wind, stone.
In the stages of assembling, debugging, operation maintenance and the like of a train, the bottom plate of an equipment compartment needs to be opened and closed for many times, and in the related art, the mode of opening and closing the door of the bottom plate is complicated, and multiple operators are needed for cooperation, so that the efficiency of the opening and closing process of the bottom plate is low, and the locking effect is difficult to achieve expectation.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: to solve the problems of the background art, there is provided a vehicle body floor opening/closing device.
In order to achieve the purpose, the invention adopts the technical scheme that: a vehicle body floor opening and closing device comprising:
the moving mechanism comprises a slide way and rollers, the slide way is arranged along the opening direction of the bottom plate, and the rollers are arranged at two ends of the bottom plate and are in rolling connection with the slide way;
the locking mechanism comprises active locks and fixed locks, the active locks are arranged at two corners of the bottom plate and are connected with handles, the fixed locks are arranged at the other two corners of the bottom plate and are movably connected with the bottom plate and the supporting grooves;
the rotating mechanism comprises an active module and a passive module, the active module is arranged at one end, close to the active lock, of the supporting groove and is rotationally connected with the slide way, and the passive module is arranged at one end, close to the fixed lock, of the supporting groove and is rotationally connected with the slide way;
wherein, the pulling the handle makes the initiative lock unblock, the initiative module with passive module rotates, drives slide and bottom plate move down, the gyro wheel along the slide rolls, drives the bottom plate is opened along the length direction of slide.
Furthermore, the slide includes connecting portion and sliding part, the sliding part is on a parallel with the horizontal plane setting, and the vertical fixation is in the edge of connecting portion, the sliding part orientation one side of gyro wheel is equipped with the circular arc arch, the gyro wheel middle part is sunken to the inboard, protruding with it suits to cave in.
Furthermore, the end of the slide way, which is located at the opening direction of the bottom plate, is provided with a limiting seat, and the limiting seat faces towards the roller to form an arc-shaped structure matched with the roller.
Further, the initiative lock includes lock box and lock seat, the lock box pass the bottom plate with the lock seat sets up relatively, the lock seat is fixed support on the groove, the tip extends and forms the hasp, the lock box orientation one side of lock seat is equipped with the opening, be equipped with the locating part in the opening, the hasp stretches into in the opening, the locating part will the hasp restriction is in the lock box.
Furthermore, the fixed lock comprises a sleeve and a lock rod, the sleeve is fixed on the support groove through a first lock seat, the lock rod is vertically fixed on the bottom plate, and the axis of the lock rod is coaxial with the axis of the sleeve.
Further, the locking lever axial is equipped with external screw thread portion, sleeve axial internal surface is equipped with internal thread portion, external screw thread portion with internal thread portion spiro union makes the locking lever for telescopic high position changes.
Furthermore, the driving module comprises a driving arm and a rotating arm box, the rotating arm box is fixed on the supporting groove, and two ends of the driving arm are respectively connected with the rotating arm box and the slide way in a rotating mode.
Further, be equipped with fixed axle and pivot in the rocking arm box, the cover is equipped with first torsional spring and pushes down on the fixed axle the locking plate of first torsional spring, the cover is equipped with the second torsional spring in the pivot, the driving arm orientation be equipped with the lock post on one side of rocking arm box, and with lock post one end fixed connection, the lock post other end passes the rocking arm box, with the movable connection of locking plate, second torsional spring one end is stretched out and is formed cyclic annularly, and the cover is established on the lock post, connect the lock post with the pivot.
Furthermore, a track groove is formed in one side, facing the driving arm, of the rotating arm box, and the lock column moves along the track groove to drive the driving arm to rotate.
Furthermore, the passive module comprises an auxiliary arm and two rotating seats, the shape of the auxiliary arm is the same as that of the active arm, the two rotating seats are respectively fixed on the supporting groove and the slide way, and two ends of the auxiliary arm are rotatably connected with the rotating seats.
The invention has the beneficial effects that: according to the invention, the rotating mechanism is arranged, so that the slide way and the bottom plate can move outwards for a certain distance and can play a certain supporting role for the bottom plate and the slide way, the moving assembly is arranged, the bottom plate which moves downwards can move laterally along the slide way to be opened, the locking mechanism is arranged, the unlocking of the bottom plate can be realized only by pulling the handle, the bottom plate can be locked along with the movement of the bottom plate when the bottom plate is closed, the operation is simple, the fixed lock is additionally arranged to lock the bottom plate after the bottom plate is closed, the locking effect of the bottom plate is increased, the efficiency of the opening and closing process of the bottom plate is integrally improved, and the practicability is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is also possible for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic view showing a position of a vehicle body floor opening/closing device when the vehicle body floor opening/closing device is closed according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is a schematic view showing the position of the opening/closing device for the floor of the vehicle body in the embodiment of the present invention when opened;
FIG. 5 is a schematic view of the positions of the support slot and the moving mechanism in the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a supporting groove according to an embodiment of the present invention;
fig. 7 is a schematic view of the installation position of the rotating mechanism in the embodiment of the present invention;
FIG. 8 is an enlarged view at C of FIG. 7;
FIG. 9 is an enlarged view taken at D in FIG. 7;
FIG. 10 is a schematic diagram of an active module according to an embodiment of the present invention;
fig. 11 is a schematic view showing the inside structure of the boom box in the embodiment of the present invention;
fig. 12 is a schematic structural diagram of a joint of the boom box and the main boom according to an embodiment of the present invention.
Reference numerals: 01. a base plate; 02. a support groove; 02a, a first supporting part; 02b, a second support; 02c, a third support; 02d, a fourth support; 10. a moving mechanism; 11. a slideway; 111. a sliding part; 111a, a protrusion; 112. a connecting portion; 12. a roller; 12a, a recess; 13. a limiting seat; 20. a locking mechanism; 21. an active lock; 211. a lock seat; 211a, a lock catch; 212. a lock case; 212a, an opening; 212b, a stopper; 22. fixing a lock; 221. a sleeve; 222. a lock lever; 30. a rotation mechanism; 31. an active module; 311. a master arm; 311a, lock cylinder; 312. a rotating arm box; 312a, a fixed shaft; 312b, a rotating shaft; 312c, a first torsion spring; 312d, locking plate; 312e, a second torsion spring; 312f, track slot; 32. a passive module; 321. an auxiliary arm; 322. and (6) rotating the seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 12, the opening and closing device for a vehicle body floor 01 includes:
the moving mechanism 10 comprises a slide way 11 and rollers 12, the slide way 11 is arranged along the opening direction of the bottom plate 01, and the rollers 12 are arranged at two ends of the bottom plate 01 and are in rolling connection with the slide way 11;
the locking mechanism 20 comprises active locks 21 and fixed locks 22, wherein the active locks 21 are arranged at two corners of the bottom plate 01 and are connected with handles, and the fixed locks 22 are arranged at the other two corners of the bottom plate 01 and are movably connected with the bottom plate 01 and the supporting grooves 02;
the rotating mechanism 30 comprises an active module 31 and a passive module 32, the active module 31 is arranged at one end, close to the active lock 21, of the supporting groove 02 and is rotatably connected with the slide rail 11, and the passive module 32 is arranged at one end, close to the fixed lock 22, of the supporting groove 02 and is rotatably connected with the slide rail 11;
wherein, pulling the handle makes active lock 21 unblock, and active module 31 and passive module 32 rotate, drive slide 11 and bottom plate 01 and move down, and gyro wheel 12 rolls along slide 11, drives the length direction of bottom plate 01 along slide 11 and opens.
Through setting up rotary mechanism 30, make slide 11 and bottom plate 01 can move one section distance outward, and play certain supporting role to bottom plate 01 and slide 11, through setting up the removal subassembly, make the bottom plate 01 that shifts out down to move along slide 11 side and open, through setting up locking mechanism 20, only need the pulling handle can realize the unblock of bottom plate 01, also can lock along with the removal of bottom plate 01 when bottom plate 01 closes, and is easy to operate, after bottom plate 01 closes, still add fixed lock 22 and lock bottom plate 01, the locking effect of bottom plate 01 has been increased, the efficiency of bottom plate 01 switching process has wholly been improved, therefore, the practicability is high.
It should be noted here that the supporting grooves 02 are disposed at both ends of the bottom plate 01 along the opening direction of the bottom plate 01, and the moving mechanism 10 and the rotating mechanism 30 are integrated on the supporting grooves 02, in this embodiment, the supporting grooves 02 are configured in a hollow T-shape to form a first supporting portion 02a, a second supporting portion 02b, a third supporting portion 02c and a fourth supporting portion 02d, the first supporting portion 02a and the third supporting portion 02c are disposed vertically, the second supporting portion 02b and the fourth supporting portion 02d are on the same horizontal plane as the third supporting portion 02c, a fixed position and a fixed space are left, preferably, a sealing strip may be further disposed between the fourth supporting portion 02d and the chute 11, and after the bottom plate 01 is closed and locked, a sealing effect is formed on the inside of the equipment cabin.
Specifically, the slideway 11 comprises a connecting portion 112 and a sliding portion 111, the sliding portion 111 is arranged parallel to the horizontal plane and is vertically fixed at the edge of the connecting portion 112, one side of the sliding portion 111 facing the roller 12 is provided with an arc protrusion 111a, the middle of the roller 12 is recessed towards the inner side 12a, the protrusion 111a is adapted to the recess 12a, the connecting portion 112 is connected with the first supporting portion 02a of the supporting groove 02 through the rotating mechanism 30, the whole slideway 11 is located in the lower space of the supporting groove 02, the space utilization rate is improved, the connecting portion 112 and the sliding portion 111 are formed by composite materials in an integrated pultrusion mode, the connecting rigidity between the connecting portion 112 and the sliding portion 111 is guaranteed, the arc protrusion 111a is supported by wear-resistant materials and is arranged along the length direction of the sliding portion 111, on one hand, the wear resistance of the roller 12 in the opening and closing process of the bottom plate 01 is improved, on the other hand, limitation is carried out on the moving direction, and the roller 12 is prevented from being separated from the slideway 11.
Preferably, one end of the slide rail 11 in the opening direction of the bottom plate 01 is provided with a limiting seat 13, the limiting seat 13 is disposed toward the roller 12 to form an arc structure corresponding to the roller 12, and when the bottom plate 01 is opened to the limit position, the roller 12 moves to the lower part of the arc structure of the limiting seat 13 along the sliding part 111 to prevent the roller 12 from moving continuously.
Specifically, the active lock 21 includes a lock box 212 and a lock seat 211, the lock box 212 passes through the bottom plate 01 and is disposed opposite to the lock seat 211, the lock seat 211 is fixed on the supporting slot 02, an end portion of the lock box extends to form a lock catch 211a, an opening 212a is disposed on one side of the lock box 212 facing the lock seat 211, a limiting member 212b is disposed in the opening 212a, the lock catch 211a extends into the opening 212a, the lock catch 211a is limited in the lock box 212 by the limiting member 212b, the handle is toggled, and the limiting member 212b is rotated and opened along with the rotation of the handle, so that the lock catch 211a can move out of the opening 212a to open the active lock 21.
Specifically, the fixing lock 22 includes a sleeve 221 and a lock rod 222, the sleeve 221 is fixed on the supporting groove 02 through a first lock seat 211, the lock rod 222 is vertically fixed on the bottom plate 01, and the axis is coaxial with the axis of the sleeve 221, after the bottom plate 01 is closed, the lock rod 222 penetrates through the sleeve 221, the bottom plate 01 and the supporting groove 02 are connected and locked, and the connecting strength between the bottom plate 01 and the supporting groove 02 is enhanced.
Preferably, as for the above embodiment, the lock rod 222 is axially provided with an external thread portion, the sleeve 221 is axially provided with an internal thread portion on the inner surface, and the external thread portion is screwed with the internal thread portion, so that the height position of the lock rod 222 relative to the sleeve 221 is changed, thereby realizing the closing and opening of the fixed lock 22, and simultaneously effectively preventing the lock of the bottom plate 01 from being loosened and falling off, and reducing the probability of accidents.
Specifically, the active module 31 includes an active arm 311 and a rotating arm box 312, the rotating arm box 312 is fixed on the support slot 02, two ends of the active arm 311 are rotatably connected with the rotating arm box 312 and the slideway 11, preferably, the rotating arm box 312 is arranged inside the hollow structure of the first support part 02a, and the active arm 311 is connected with the rotating arm box 312 through the side wall of the first support part 02a, so that the active arm 311 can rotate in the space formed between the slideway 11 and the first support part 02a, and the space utilization rate is improved.
Specifically, a fixed shaft 312a and a rotating shaft 312b are provided in the rotating arm box 312, a first torsion spring 312c and a locking plate 312d for pressing the first torsion spring 312c are sleeved on the fixed shaft 312a, a second torsion spring 312e is sleeved on the rotating shaft 312b, a locking column 311a is provided on one side of the driving arm 311 facing the rotating arm box 312, and is fixedly connected with one end of the lock column 311a, the other end of the lock column 311a passes through the rotating arm box 312, the locking plate 312d is movably connected, one end of the second torsion spring 312e extends out and forms a ring shape, and is sleeved on the locking column 311a to connect the locking column 311a and the rotating shaft 312b, and it should be noted here, in order to increase the connection rigidity of the rotating arm box 312 and the supporting groove 02, connecting bodies are arranged along two corners of a diagonal line of the rotating arm box 312 and connected with the supporting groove 02, in order to prevent the active arm 311 from being excessively stressed during the rotation process due to the action force of the slide rail and the bottom plate 01 applied to the active arm 311, the rotating shaft 312b is also connected with the supporting groove 02 through the rotating arm box 312.
Specifically, a track groove 312f is formed in one side of the rotating arm box 312 facing the driving arm 311, the lock cylinder 311a moves along the track groove 312f to drive the driving arm 311 to rotate, due to the gravity action of the bottom plate 01 and the slideway 11, the lock cylinder 311a can move down along the track groove 312f until the lock cylinder is located at a position below the rotating shaft 312b, the driving arm 311 rotates under the driving action of the second torsion spring 312e, the slideway 11 moves down to a limit position, when the bottom plate 01 is closed, the driving arm 311 drives the lock cylinder 311a to move along the track groove 312f in a reverse direction, and after the lock cylinder moves up to the limit position, under the action of the first torsion spring 312c, a free end of the lock cylinder 312d hooks one end of the lock cylinder 311a located in the rotating arm box 312, so that the position of the driving arm 311 is limited, preferably, the track groove 312f extends into the rotating arm box 312, and ensures the connection rigidity of the end of the lock cylinder 311 a.
Specifically, set up passive module 32 and disperse the atress after the bottom plate 01 moves down, passive module 32 includes auxiliary arm 321 and two and rotate seat 322, auxiliary arm 321 shape is the same with initiative arm 311 shape, thereby guarantee that auxiliary arm 321 is synchronous with the rotation process of initiative arm 311, avoid appearing phenomenons such as card pause, two rotate seat 322 and fix respectively on supporting groove 02 and slide 11, auxiliary arm 321 both ends are rotated with rotating seat 322 and are connected, preferably, auxiliary arm 321 articulates one side that deviates from initiative arm 311 on connecting portion 112, make the atress of both sides even.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A vehicle body floor opening/closing device characterized by comprising:
the moving mechanism comprises a slide way and rollers, the slide way is arranged along the opening direction of the bottom plate, and the rollers are arranged at two ends of the bottom plate and are in rolling connection with the slide way;
the locking mechanism comprises active locks and fixed locks, the active locks are arranged at two corners of the bottom plate and are connected with handles, and the fixed locks are arranged at the other two corners of the bottom plate and are movably connected with the bottom plate and the supporting groove;
the rotating mechanism comprises an active module and a passive module, the active module is arranged at one end, close to the active lock, of the supporting groove and is rotationally connected with the slide way, and the passive module is arranged at one end, close to the fixed lock, of the supporting groove and is rotationally connected with the slide way;
wherein, the pulling the handle makes the initiative lock unblock, the initiative module with passive module rotates, drives slide and bottom plate move down, the gyro wheel along the slide rolls, drives the bottom plate is opened along the length direction of slide.
2. The opening and closing device for the vehicle body floor according to claim 1, wherein the slide comprises a connecting portion and a sliding portion, the sliding portion is arranged parallel to a horizontal plane and vertically fixed at an edge of the connecting portion, an arc protrusion is arranged on one side of the sliding portion facing the roller, the middle portion of the roller is concave towards the inner side, and the protrusion is adapted to the concave portion.
3. The opening and closing device for the vehicle body floor according to claim 2, wherein a limiting seat is provided at one end of the slide way in the opening direction of the floor, and the limiting seat is provided toward the roller to form an arc-shaped structure adapted to the roller.
4. The vehicle body floor opening and closing device according to claim 1, wherein the active lock includes a lock box and a lock seat, the lock box passes through the floor and is disposed opposite to the lock seat, the lock seat is fixed on the support groove, an end portion of the lock seat extends to form a lock catch, an opening is disposed on one side of the lock box facing the lock seat, a limiting member is disposed in the opening, the lock catch extends into the opening, and the limiting member limits the lock catch in the lock box.
5. The vehicle body bottom plate opening and closing device according to claim 4, wherein the fixed lock comprises a sleeve and a lock rod, the sleeve is fixed on the support groove through a first lock seat, the lock rod is vertically fixed on the bottom plate, and the axis of the lock rod is coaxial with the axis of the sleeve.
6. The opening/closing device for a vehicle body floor according to claim 5, wherein the lock lever is provided with an external thread portion in an axial direction, and the sleeve is provided with an internal thread portion in an axial inner surface thereof, and the external thread portion is screwed with the internal thread portion so that a height position of the lock lever with respect to the sleeve is changed.
7. The opening and closing device for the vehicle body floor according to claim 1, wherein the driving module comprises a driving arm and a rotating arm box, the rotating arm box is fixed on the supporting groove, and two ends of the driving arm are respectively rotatably connected with the rotating arm box and the slideway.
8. The vehicle body floor opening and closing device according to claim 7, wherein a fixed shaft and a rotating shaft are provided in the rotating arm box, the fixed shaft is sleeved with a first torsion spring and presses a locking plate of the first torsion spring, the rotating shaft is sleeved with a second torsion spring, the driving arm faces the locking column arranged on one side of the rotating arm box, and is fixedly connected with one end of the locking column, the other end of the locking column penetrates through the rotating arm box, is movably connected with the locking plate, one end of the second torsion spring extends out and forms a ring shape, and the sleeve is arranged on the locking column and is connected with the rotating shaft.
9. The opening and closing device for the floor of the vehicle body as claimed in claim 8, wherein a track groove is formed on a side of the rotating arm box facing the driving arm, and the lock cylinder moves along the track groove to rotate the driving arm.
10. The opening and closing device for the vehicle body floor according to claim 9, wherein the passive module comprises an auxiliary arm and two rotating seats, the auxiliary arm has the same shape as the active arm, the two rotating seats are respectively fixed on the support groove and the slide way, and two ends of the auxiliary arm are rotatably connected with the rotating seats.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210520704.6A CN114771586B (en) | 2022-05-12 | 2022-05-12 | Opening and closing device for vehicle body bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210520704.6A CN114771586B (en) | 2022-05-12 | 2022-05-12 | Opening and closing device for vehicle body bottom plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114771586A CN114771586A (en) | 2022-07-22 |
| CN114771586B true CN114771586B (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210520704.6A Active CN114771586B (en) | 2022-05-12 | 2022-05-12 | Opening and closing device for vehicle body bottom plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114771586B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268263A (en) * | 1988-07-08 | 1990-03-07 | Waggon Union Gmbh | Railway freight car |
| CN103661445A (en) * | 2013-11-29 | 2014-03-26 | 中国北车集团沈阳机车车辆有限责任公司 | Movable head cover and cement hopper car |
| CN105346546A (en) * | 2015-12-01 | 2016-02-24 | 南车长江车辆有限公司 | Fast loading and unloading type box car body |
| CN105460030A (en) * | 2015-12-25 | 2016-04-06 | 中车长江车辆有限公司 | Device for controlling bottom door to be opened and closed |
| CN207360323U (en) * | 2017-08-28 | 2018-05-15 | 今创集团股份有限公司 | Telescopic electric foot pedal |
| CN109050550A (en) * | 2018-07-11 | 2018-12-21 | 中车青岛四方车辆研究所有限公司 | A kind of shutter used for rail vehicle |
| CN111348064A (en) * | 2020-04-07 | 2020-06-30 | 中车长春轨道客车股份有限公司 | Floor unit for fixing and unlocking freight container |
| CN111469642A (en) * | 2020-04-16 | 2020-07-31 | 南京康尼机电股份有限公司 | High impact resistance top sealing sliding door system suitable for cross-country vehicle |
-
2022
- 2022-05-12 CN CN202210520704.6A patent/CN114771586B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0268263A (en) * | 1988-07-08 | 1990-03-07 | Waggon Union Gmbh | Railway freight car |
| CN103661445A (en) * | 2013-11-29 | 2014-03-26 | 中国北车集团沈阳机车车辆有限责任公司 | Movable head cover and cement hopper car |
| CN105346546A (en) * | 2015-12-01 | 2016-02-24 | 南车长江车辆有限公司 | Fast loading and unloading type box car body |
| CN105460030A (en) * | 2015-12-25 | 2016-04-06 | 中车长江车辆有限公司 | Device for controlling bottom door to be opened and closed |
| CN207360323U (en) * | 2017-08-28 | 2018-05-15 | 今创集团股份有限公司 | Telescopic electric foot pedal |
| CN109050550A (en) * | 2018-07-11 | 2018-12-21 | 中车青岛四方车辆研究所有限公司 | A kind of shutter used for rail vehicle |
| CN111348064A (en) * | 2020-04-07 | 2020-06-30 | 中车长春轨道客车股份有限公司 | Floor unit for fixing and unlocking freight container |
| CN111469642A (en) * | 2020-04-16 | 2020-07-31 | 南京康尼机电股份有限公司 | High impact resistance top sealing sliding door system suitable for cross-country vehicle |
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| Publication number | Publication date |
|---|---|
| CN114771586A (en) | 2022-07-22 |
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