CN115230770B - Novel front end opening and closing mechanism for motor train unit and motor train unit - Google Patents
Novel front end opening and closing mechanism for motor train unit and motor train unit Download PDFInfo
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- CN115230770B CN115230770B CN202210917152.2A CN202210917152A CN115230770B CN 115230770 B CN115230770 B CN 115230770B CN 202210917152 A CN202210917152 A CN 202210917152A CN 115230770 B CN115230770 B CN 115230770B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 144
- 241000271559 Dromaiidae Species 0.000 claims abstract description 4
- 230000007704 transition Effects 0.000 claims description 15
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000003137 locomotive effect Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
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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
- B61D17/02—Construction details of vehicle bodies reducing air resistance by modifying contour ; Constructional features for fast vehicles sustaining sudden variations of atmospheric pressure, e.g. when crossing in tunnels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The application provides a novel front-end opening and closing mechanism for a motor train unit and the motor train unit, and relates to the technical field of rail transit. The novel front end opening and closing mechanism for the motor train unit comprises a left cover plate assembly, a right cover plate assembly, an upper mechanism assembly and a lower mechanism assembly. The left cover plate assembly and the right cover plate assembly are hinged with the upper mechanism assembly; the lower mechanism assembly comprises a main bottom plate, a first driving mechanism, a second driving mechanism and a base shaft, the left cover plate assembly and the right cover plate assembly are hinged to the base shaft, the base shaft is fixed with the main bottom plate, and the first driving mechanism and the second driving mechanism respectively drive one cover plate assembly to pivot. The front end opening and closing mechanism can reduce unnecessary space occupation under the condition that the left cover plate assembly and the right cover plate assembly are respectively and independently controlled to be opened and closed, so that the structure is simpler, devices in the vehicle head such as a coupler and an anticreeper can be avoided as much as possible, and the maintenance is convenient. The simple structure also makes its adaptability better, to the EMUs of different locomotive appearances, can assemble the use mostly.
Description
Technical Field
The application relates to the technical field of rail transit, in particular to a novel front-end opening and closing mechanism for a motor train unit and the motor train unit.
Background
Along with the continuous development of economy, the rail vehicles gradually become the first-choice traffic mode for people to travel daily, and on the premise, the high-speed motor train industry rapidly develops. In order to realize shunting operation or rescue operation of a railway vehicle, opening and closing mechanisms are generally arranged at two ends of the vehicle. In shunting operation and rescue working conditions, the front end opening and closing mechanism can be automatically opened, the front end opening and closing mechanism extends out of the automatic coupler to realize the continuous hanging of the vehicle, and the opening and closing mechanism can be manually opened to realize the continuous hanging. The movable cover plate can be kept closed and self-locked when the vehicle is in normal operation, so that good aerodynamic performance, smooth and attractive appearance and damage to internal equipment are kept.
The existing opening and closing mechanism is complex in structure, devices such as a coupler and an anticreeper exist in the opening and closing mechanism, the requirement on maintenance operability is improved, and the design requirement on the opening and closing mechanism is continuously improved.
Disclosure of Invention
The application aims to provide a novel front-end opening and closing mechanism for a motor train unit, which can solve the problem that the existing opening and closing mechanism is complex in structure.
Another object of the present application is to provide a motor train unit having all the characteristics of the above-described novel front-end opening/closing mechanism for a motor train unit.
Embodiments of the present application are implemented as follows:
the embodiment of the application provides a novel front end opening and closing mechanism for a motor train unit, which comprises the following components:
a left cover plate assembly;
a right housing plate assembly;
the upper mechanism assembly is hinged with the upper part of the left cover plate assembly and the upper part of the right cover plate assembly, and is used for being connected with a vehicle body;
the lower mechanism assembly comprises a main bottom plate, a first driving mechanism, a second driving mechanism and a base shaft, wherein the lower part of the left cover plate assembly and the lower part of the right cover plate assembly are hinged to the base shaft, the base shaft is fixed with the main bottom plate, the main bottom plate is used for connecting the vehicle body, the first driving mechanism is arranged on the main bottom plate and used for driving the left cover plate assembly to pivot, and the second driving mechanism is arranged on the main bottom plate and used for driving the right cover plate assembly to pivot;
wherein the left and right hood plate assemblies have a first position abutting against each other to close the front end of the vehicle body and a second position separated from each other to open the front end of the vehicle body; when the first driving mechanism and the second driving mechanism work, the left cover plate assembly and the right cover plate assembly can be switched between the first position and the second position.
In addition, the front end opening and closing mechanism for the novel motor train unit provided by the embodiment of the application can also have the following additional technical characteristics:
in an alternative embodiment of the application, the first drive mechanism is structurally symmetrical to the second drive mechanism.
In an alternative embodiment of the present application, the first driving mechanism and the second driving mechanism each include a lower rotating arm, a link mechanism, and a driving assembly, where the driving assembly is disposed on the main base plate, an output end of the driving assembly is hinged to a middle portion of the lower rotating arm through the link mechanism, one end of the lower rotating arm is hinged to the base shaft, another end of the lower rotating arm of the first driving mechanism is connected to the left cover plate assembly, and another end of the lower rotating arm of the second driving mechanism is connected to the right cover plate assembly.
In an alternative embodiment of the present application, the driving assembly includes a mounting base, a linear driving member, a first gear, a sliding rail, a rack and a driving frame, wherein the mounting base is fixed on the main bottom plate, the linear driving member is disposed on the mounting base, the first gear is rotatably connected to the mounting base, the sliding rail is fixed on the mounting base, an output end of the linear driving member is connected to the rack through the driving frame, the rack is slidably disposed on the sliding rail, the first gear is configured to be capable of meshing with the rack, and a gear shaft of the first gear is connected to the link mechanism.
In an alternative embodiment of the application, the drive assembly further comprises a second gear rotatably provided to the mount, the second gear being configured to be capable of meshing with the rack, a gear shaft of the second gear passing through the mount and being configured to be manually rotatable.
In an alternative embodiment of the present application, the link mechanism includes a driving link and a driven link, the driving assembly further includes a limiting member, the limiting member is disposed on the mounting seat, the driving link is fixedly connected with the gear shaft of the first gear, one end of the driven link is hinged with the driving link, and the other end of the driven link is hinged with the middle part of the lower rotating arm;
when the left cover plate assembly or the right cover plate assembly is positioned at the first position, the driving connecting rod abuts against the limiting piece, and the axis of the gear shaft of the first gear, the axis of the hinge shaft of the driven connecting rod and the driving connecting rod, and the axis of the hinge shaft of the driven connecting rod and the hinge shaft of the lower rotating arm are collinear.
In an alternative embodiment of the present application, the driving assembly further includes a gas spring, the link mechanism includes a driving link, one side of the driving link has a strut, one end of the gas spring is hinged to the main base plate, and the other end of the gas spring is hinged to the strut.
In an alternative embodiment of the present application, the first driving mechanism and the second driving mechanism each include an on-position switch and an off-position switch, where the off-position switch is disposed on the main bottom plate, and the off-position switch is used for detecting the link mechanism; the switch in place is arranged on the driving assembly, and the switch in place is used for detecting the position of the output end of the driving assembly.
In an alternative embodiment of the present application, the left cover plate assembly and the right cover plate assembly each include an upper transition bracket and a lower transition bracket, the upper transition bracket is connected with the upper mechanism assembly, and the lower transition bracket is connected with the first driving mechanism and the second driving mechanism.
The embodiment of the application provides a motor train unit, which comprises a vehicle body and the front end opening and closing mechanism for the novel motor train unit, wherein the front end opening and closing mechanism for the novel motor train unit is arranged at the front end of the vehicle body and is used for opening or closing the front end of the vehicle body.
The beneficial effects of the application are as follows:
according to the novel front end opening and closing mechanism for the motor train unit, the corresponding first driving mechanism and the corresponding second driving mechanism are respectively configured for the left cover plate assembly and the right cover plate assembly, and the common upper mechanism assembly and the base shaft are used, so that unnecessary space occupation can be reduced under the condition that the left cover plate assembly and the right cover plate assembly are respectively and independently controlled to be opened and closed, the structure is simpler, and devices in a vehicle head such as a coupler and an anticreeper can be avoided as much as possible, and the maintenance is convenient. The simple structure also makes its adaptability better, to the EMUs of different locomotive appearances, can assemble the use mostly. Meanwhile, a manual mode is designed, so that the cover plate assembly can be directly and manually opened and closed when the need exists, and the structure is simple and reliable. The motor train unit using the front end opening and closing mechanism for the novel motor train unit can be more convenient to maintain.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a front-end opening and closing mechanism for a novel motor train unit according to an embodiment of the present application;
FIG. 2 is a top view of the lower mechanism assembly;
FIG. 3 is a perspective view of the lower mechanism assembly from one perspective;
FIG. 4 is a perspective view of the lower mechanism assembly from another perspective;
FIG. 5 is a perspective view of the drive assembly from one perspective;
FIG. 6 is a perspective view of the drive assembly from another perspective;
FIG. 7 is a cross-sectional view of the drive assembly;
FIG. 8 is a schematic view of the direction A of FIG. 7;
fig. 9 is a schematic view of the right shroud assembly.
Icon: 100-a front end opening and closing mechanism for a novel motor train unit; 10-left cover plate assembly; 20-right housing plate assembly; 101-upper transition support; 102-a lower transition support; 30-an upper mechanism assembly; 31-rotating arm; 32-connecting shaft; 40-lower mechanism assembly; 41-a main bottom plate; 42-a first drive mechanism; 43-a second drive mechanism; 44-a base shaft; 45-lower rotating arm; 46-a linkage mechanism; 461-a drive link; 4611—struts; 462—a driven link; 47-a drive assembly; 471-mount; 472-linear drive; 473-a first gear; 474-slide rail; 475-racks; 476-a drive rack; 477-a second gear; 4771 gear shaft of the second gear; 48-limiting pieces; 49-a gas spring; 51-open in place switch; 52-close the in-place switch.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the product is conventionally put in use, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Examples
Referring to fig. 1 to 9, an embodiment of the present application provides a novel front-end opening and closing mechanism 100 for a motor train unit, including:
a left shroud plate assembly 10;
a right housing plate assembly 20;
an upper mechanism assembly 30, the upper part of the left cover plate assembly 10 and the upper part of the right cover plate assembly 20 are hinged with the upper mechanism assembly 30, and the upper mechanism assembly 30 is used for being connected with a vehicle body;
the lower mechanism assembly 40, the lower mechanism assembly 40 includes the main bottom plate 41, the first driving mechanism 42, the second driving mechanism 43 and the base shaft 44, the lower part of the left cover plate assembly 10, the lower part of the right cover plate assembly 20 are hinged to the base shaft 44, the base shaft 44 is fixed with the main bottom plate 41, the main bottom plate 41 is used for connecting the car body, the first driving mechanism 42 is arranged on the main bottom plate 41 and used for driving the left cover plate assembly 10 to pivot, the second driving mechanism 43 is arranged on the main bottom plate 41 and used for driving the right cover plate assembly 20 to pivot;
wherein the left and right hood plate assemblies 10 and 20 have a first position where they are abutted against each other to close the front end of the vehicle body and a second position where they are separated from each other to open the front end of the vehicle body; the left and right cowl assemblies 10, 20 are capable of switching positions between the first and second positions when the first and second drive mechanisms 42, 43 are operated.
In short, the left cover plate assembly 10 and the right cover plate assembly 20 can be respectively driven to be opened and closed by the first driving mechanism 42 and the second driving mechanism 43, and the upper mechanism assembly 30 is used as a driven connecting structure to connect the cover plate assembly with a vehicle body. The structure is simple, the components are simplified, the operation is simple, and meanwhile, the left cover plate assembly and the right cover plate assembly can be independently opened and closed, so that the maintenance can be convenient. And because the structure is simple, the error is not easy, so the operation is reliable, and the failure rate can be reduced.
The shape of the vehicle head can be different according to the vehicle types, the upper mechanism assembly 30 can change the length of the upper connecting shaft 32 so as to adapt to the shape of the corresponding vehicle head, and the cover plate assemblies with different sizes and specifications can be conveniently connected with the vehicle head; the main bottom plate 41 of the lower mechanism assembly 40 can be designed according to the installation space of the lower side of the vehicle head, and the length of the base shaft 44 can also be designed in a matched manner to adapt to the change of the dimension specification of the cover plate assembly.
Referring to fig. 9, fig. 9 is a schematic diagram of the right hood assembly 20, and the left hood assembly 10 can recognize the structure according to this and fig. 1. The left and right hood plate assemblies 10 and 20 of the present embodiment each include an upper transition bracket 101 and a lower transition bracket 102, the upper transition bracket 101 being connected to the upper mechanism assembly 30, the lower transition bracket 102 being connected to the first and second drive mechanisms 42 and 43. The upper mechanism assembly 30 is provided with a rotating arm 31, one end of the rotating arm 31 is connected with the transition bracket, and the other end of the rotating arm is hinged on a connecting shaft 32.
As shown in fig. 2, the first driving mechanism 42 and the second driving mechanism 43 of the present application are structurally symmetrical. The first and second drive mechanisms 42, 43 each include a lower swivel arm 45, a linkage 46, and a drive assembly 47.
Taking one of the driving mechanisms as an example, a driving component 47 is arranged on the main bottom plate 41, the output end of the driving component 47 is hinged with the middle part of a lower rotating arm 45 through a connecting rod mechanism 46, one end of the lower rotating arm 45 is hinged with a base shaft 44, wherein the other end of the lower rotating arm 45 of the first driving mechanism 42 is connected with the left cover plate assembly 10, and the other end of the lower rotating arm 45 of the second driving mechanism 43 is connected with the right cover plate assembly 20.
Referring to fig. 5 to 8, the driving assembly 47 of the present application includes a mounting seat 471, a linear driving member 472, a first gear 473, a sliding rail 474, a rack 475 and a driving rack 476, wherein the mounting seat 471 is fixed on the main bottom plate 41, the linear driving member 472 is disposed on the mounting seat 471, the first gear 473 is rotatably connected to the mounting seat 471, the sliding rail 474 is fixed on the mounting seat 471, an output end of the linear driving member 472 is connected to the rack 475 through the driving rack 476, the rack 475 is slidably disposed on the sliding rail 474, the first gear 473 is configured to be capable of meshing with the rack 475, and a gear shaft of the first gear 473 is connected to the link mechanism 46. The gear shaft of the first gear 473 then constitutes the output of the drive assembly 47 described above.
In the present embodiment, an air cylinder is used as the linear driving member 472, and it is understood that an oil cylinder, an electric cylinder, a linear motor, or the like capable of achieving linear driving may be used as the linear driving member 472.
Further, the driving assembly 47 of the present embodiment further includes a second gear 477, the second gear 477 is rotatably disposed on the mounting seat 471, the second gear 477 is configured to be capable of being meshed with the rack 475, and the gear shaft 4771 of the second gear passes through the mounting seat 471 and is configured to be capable of being manually screwed. That is, as shown in fig. 6 or 8, the gear shaft 4771 of the second gear is paid out, and an operator can directly screw the gear shaft through a tool, so that the rack 475 is driven, and then the first gear 473 is driven, and finally the cover plate assembly is manually opened or closed, so that the cylinder is selected to be opened or manually opened according to actual conditions during maintenance and repair, and the operability is better.
In the present embodiment, the link mechanism 46 includes a driving link 461 and a driven link 462. Further, the driven link 462 of the present embodiment has only one, so that the structure is simplified and space-saving. But it should not be construed in a limiting sense that other numbers of driving links 461, 462 are not within the scope of the present application. For example, the driven connecting rod 462 can be added according to the different installation spaces, so as to conveniently complete transmission. Or when the mass of the cover plate assembly is large, the driving connecting rod 461 can be additionally arranged and the driving component 47 can be configured, so that one cover plate assembly can have a plurality of driving points, and reliable opening and closing can be ensured.
In this embodiment, the driving assembly 47 further includes a limiting member 48, the limiting member 48 is disposed on the mounting seat 471, the driving connecting rod 461 is fixedly connected with the gear shaft of the first gear 473, one end of the driven connecting rod 462 is hinged with the driving connecting rod 461, and the other end of the driven connecting rod 462 is hinged with the middle part of the lower rotating arm 45;
when the left or right cover plate assembly 10 or 20 is in the first position, the driving link 461 abuts against the limiting member 48, and the gear shaft center of the first gear 473, the hinge shaft center of the driven link 462 and the driving link 461, and the hinge shaft center of the driven link 462 and the lower rotating arm 45 are collinear. When the gear shaft center of the first gear 473, the hinge shaft center of the driven link 462 and the driving link 461, and the hinge shaft center of the driven link 462 and the hinge shaft center of the lower rotating arm 45 are collinear, the driven link 462 reaches a dead point position relative to the driving link 461, the locking of the link mechanism 46 is completed, and the stopper 48 can provide support on the side surface of the driving link 461 to ensure stable self-locking. That is, the linkage 46 may achieve self-locking of the hood assembly after closing without the addition of an additional locking mechanism. Taking the view of fig. 2 as an example, if the left cover plate assembly 10 is directly subjected to an external force rotating in the opening direction, the driven link 462 is required to drive the driving link 461 to rotate clockwise to open the left cover plate assembly 10, and the limiting member 48 limits the driving link 461, so that this action cannot be achieved. So that the left cowl assembly 10 does not open when subjected to forces outside the vehicle head. Only when the driving link 461 rotates counterclockwise and drives the driven link 462 to move clockwise, the left cover plate assembly 10 can be successfully opened under the driving force of the inside of the vehicle head.
The driving assembly 47 further includes a gas spring 49, one side of the driving link 461 has a strut 4611, one end of the gas spring 49 is hinged to the main base plate 41, and the other end of the gas spring 49 is hinged to the strut 4611. The gas spring 49 can buffer the acting force of the active link 461 to avoid the abrupt change of the state of the cover plate assembly to affect the service life of the whole structure.
Further, the first driving mechanism 42 and the second driving mechanism 43 of the present embodiment each include an on-position switch 51 and an off-position switch 52, the off-position switch 52 is disposed on the main bottom plate 41, and the off-position switch 52 is used for detecting the link mechanism 46; an on-position switch 51 is provided to the driving assembly 47, and the on-position switch 51 is used to detect the position of the output end of the driving assembly 47. Specifically, the close-in-place switch 52 is positioned adjacent the stop 48 and when the link is moved into place and detected, the cylinder does not continue to retract. Conversely, when the open-in-place switch 51 detects the piston rod of the cylinder, indicating that the hood assembly has been opened in place, the cylinder does not continue to extend the piston rod.
The embodiment of the application provides a motor train unit, which comprises a vehicle body and the front end opening and closing mechanism 100 for the novel motor train unit, wherein the front end opening and closing mechanism 100 for the novel motor train unit is arranged at the front end of the vehicle body and is used for opening or closing the front end of the vehicle body. The structure of the motor train unit body in the prior art can be referred to, and will not be described herein.
Taking the left cover plate assembly 10 as an example, when the air cylinder stretches out, the movement of the rack 475 makes the driving connecting rod 461 rotate anticlockwise, and the driven connecting rod 462 drives the left lower rotating arm 45 to rotate anticlockwise, so that the left cover plate assembly 10 is driven to rotate by taking the base shaft 44 as an axis, and opening is achieved. When the cylinder needs to be closed, the piston rod of the cylinder is retracted. By detecting the in-place switch and combining a control system, automatic opening and closing can be realized. The control system can be an electric box of the motor train unit, a control end in a cab cabin, a controller specially arranged in a locomotive, or a ground control center for control. There are many ways of controlling, as long as it is convenient to automatically open and close the cover plate assembly.
The front end opening and closing mechanism 100 for the novel motor train unit of the application can reduce unnecessary space occupation under the condition of realizing independent opening and closing control of the left cover plate assembly 10 and the right cover plate assembly 20 respectively through the shared upper mechanism assembly 30 and the base shaft 44 by respectively configuring the corresponding first driving mechanism 42 and the corresponding second driving mechanism 43 for the left cover plate assembly 10 and the right cover plate assembly 20, and the structure is simpler, thereby avoiding devices in a vehicle head such as a coupler and a creeper as much as possible and being convenient to maintain. The simple structure also makes its adaptability better, to the EMUs of different locomotive appearances, can assemble the use mostly. Meanwhile, a manual mode is designed, so that the cover plate assembly can be directly and manually opened and closed when the need exists, and the structure is simple and reliable. The motor train unit using the novel front-end opening and closing mechanism 100 for the motor train unit is also more convenient to maintain.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. Novel front end closing mechanism (100) for EMUs, characterized by comprising:
a left shroud plate assembly (10);
a right shroud assembly (20);
an upper mechanism assembly (30), wherein the upper part of the left cover plate assembly (10) and the upper part of the right cover plate assembly (20) are hinged with the upper mechanism assembly (30), and the upper mechanism assembly (30) is used for being connected with a vehicle body;
the lower mechanism assembly (40), the lower mechanism assembly (40) comprises a main bottom plate (41), a first driving mechanism (42), a second driving mechanism (43) and a base shaft (44), the lower part of the left cover plate assembly (10) and the lower part of the right cover plate assembly (20) are hinged to the base shaft (44), the base shaft (44) is fixed with the main bottom plate (41), the main bottom plate (41) is used for being connected with the vehicle body, the first driving mechanism (42) is arranged on the main bottom plate (41) and used for driving the left cover plate assembly (10) to pivot, and the second driving mechanism (43) is arranged on the main bottom plate (41) and used for driving the right cover plate assembly (20) to pivot;
wherein the left and right hood plate assemblies (10, 20) have a first position where they are held against each other to close the front end of the vehicle body and a second position where they are separated from each other to open the front end of the vehicle body; when the first driving mechanism (42) and the second driving mechanism (43) work, the left cover plate assembly (10) and the right cover plate assembly (20) can be switched between the first position and the second position; the first driving mechanism (42) and the second driving mechanism (43) are symmetrical in structure; the first driving mechanism (42) and the second driving mechanism (43) comprise a lower rotating arm (45), a connecting rod mechanism (46) and a driving assembly (47), the driving assembly (47) is arranged on the main bottom plate (41), the output end of the driving assembly (47) is hinged with the middle part of the lower rotating arm (45) through the connecting rod mechanism (46), one end of the lower rotating arm (45) is hinged to the base shaft (44), the other end of the lower rotating arm (45) of the first driving mechanism (42) is connected with the left cover plate assembly (10), and the other end of the lower rotating arm (45) of the second driving mechanism (43) is connected with the right cover plate assembly (20); the drive assembly (47) comprises a mounting seat (471), a linear drive piece (472), a first gear (473), a sliding rail (474), a rack (475) and a drive frame (476), wherein the mounting seat (471) is fixed on the main bottom plate (41), the linear drive piece (472) is arranged on the mounting seat (471), the first gear (473) is rotationally connected with the mounting seat (471), the sliding rail (474) is fixed on the mounting seat (471), the output end of the linear drive piece (472) is connected with the rack (475) through the drive frame (476), the rack (475) is slidably arranged on the sliding rail (474), the first gear (473) is configured to be meshed with the rack (475), and a gear shaft of the first gear (473) is connected with the connecting rod mechanism (46).
2. The novel front-end opening and closing mechanism (100) for a motor train unit according to claim 1, wherein the driving assembly (47) further includes a second gear (477), the second gear (477) is rotatably provided to the mount (471), the second gear (477) is configured to be capable of meshing with the rack (475), and a gear shaft (4771) of the second gear passes through the mount (471) and is configured to be manually screwed.
3. The novel front-end opening and closing mechanism (100) for a motor train unit according to claim 1, wherein the link mechanism (46) comprises a driving link (461) and a driven link (462), the driving assembly (47) further comprises a limiting piece (48), the limiting piece (48) is arranged on the mounting seat (471), the driving link (461) is fixedly connected with a gear shaft of the first gear (473), one end of the driven link (462) is hinged with the driving link (461), and the other end of the driven link (462) is hinged with the middle part of the lower rotating arm (45);
when the left cover plate assembly (10) or the right cover plate assembly (20) is positioned at the first position, the driving connecting rod (461) abuts against the limiting piece (48), the gear shaft axis of the first gear (473), the hinge axis of the driven connecting rod (462) and the hinge axis of the driving connecting rod (461), and the hinge axis of the driven connecting rod (462) and the hinge axis of the lower rotating arm (45) are collinear.
4. The novel front-end opening and closing mechanism (100) for a motor train unit according to claim 1, wherein the driving assembly (47) further comprises a gas spring (49), the link mechanism (46) comprises a driving link (461), one side of the driving link (461) is provided with a strut (4611), one end of the gas spring (49) is hinged to the main bottom plate (41), and the other end of the gas spring (49) is hinged to the strut (4611).
5. The novel front-end opening and closing mechanism (100) for a motor train unit according to claim 1, wherein the first driving mechanism (42) and the second driving mechanism (43) each comprise an on-position switch (51) and an off-position switch (52), the off-position switch (52) is arranged on the main bottom plate (41), and the off-position switch (52) is used for detecting the link mechanism (46); the on-position switch (51) is arranged on the driving assembly (47), and the on-position switch (51) is used for detecting the position of the output end of the driving assembly (47).
6. The novel front-end opening and closing mechanism (100) for a motor train unit according to claim 1, wherein the left cover plate assembly (10) and the right cover plate assembly (20) each comprise an upper transition bracket (101) and a lower transition bracket (102), the upper transition brackets (101) are connected with the upper mechanism assembly (30), and the lower transition brackets (102) are connected with the first driving mechanism (42) and the second driving mechanism (43).
7. A motor train unit, characterized by comprising a vehicle body and the front end opening and closing mechanism (100) for a novel motor train unit according to any one of claims 1 to 6, wherein the front end opening and closing mechanism (100) for a novel motor train unit is arranged at the front end of the vehicle body and is used for opening or closing the front end of the vehicle body.
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| CN202210917152.2A CN115230770B (en) | 2022-08-01 | 2022-08-01 | Novel front end opening and closing mechanism for motor train unit and motor train unit |
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| CN202210917152.2A CN115230770B (en) | 2022-08-01 | 2022-08-01 | Novel front end opening and closing mechanism for motor train unit and motor train unit |
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| CN115230770B true CN115230770B (en) | 2023-12-05 |
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|---|---|
| CN115230770A (en) | 2022-10-25 |
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