CN210554814U - Locomotive head cover opening and closing device - Google Patents
Locomotive head cover opening and closing device Download PDFInfo
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- CN210554814U CN210554814U CN201921420853.5U CN201921420853U CN210554814U CN 210554814 U CN210554814 U CN 210554814U CN 201921420853 U CN201921420853 U CN 201921420853U CN 210554814 U CN210554814 U CN 210554814U
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- rocker arm
- locking
- limiting clamping
- hood
- cabin door
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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 utility model provides a locomotive hood switching device, which comprises an upper framework assembly combination, a lower framework assembly combination, an annular hood and a cabin door, wherein the cabin door is arranged at the opening of the annular hood, and the cabin door is connected with the annular hood through the upper framework assembly combination and the lower framework assembly combination; the lower framework assembly combination is provided with a lower rocker arm, a driving unit for driving the lower rocker arm to rotate and a locking device for controlling the locking of the cabin door; the locking device comprises a power source and a sliding groove assembly connected with the power source, the sliding groove assembly comprises a sliding groove seat, a movable plate and a limiting clamping plate arranged on the movable plate, a limiting clamping groove II is formed in the front end of the limiting clamping plate, and a limiting stop block is arranged at the rear end of the limiting clamping plate; the lower rocker arm is provided with a limiting sleeve matched with the limiting clamping groove on the limiting clamping plate, and one end of the lower rocker arm, which is close to the rotating shaft, is provided with a limiting clamping groove I matched with the limiting stop block on the limiting clamping plate. The opening and closing device can realize the function of simultaneously locking or unlocking two cabin doors through one operation action.
Description
Technical Field
The utility model relates to a vehicle equipment machine-building technical field especially relates to a locomotive hood switching device.
Background
In order to effectively reduce air resistance in high-speed operation of a power-concentrated locomotive, a streamline air guide sleeve is adopted at the front end of the locomotive, two movable cabin doors (a left cabin door and a right cabin door) are designed at the head part in order to ensure that a coupler is connected, and a front end opening and closing mechanism is specially designed for controlling opening and closing of the cabin doors. When the locomotive runs, the cabin door is closed to form a complete aerodynamic shape of the train, so that wind resistance and wind noise are reduced, and mechanisms such as a front-end coupler are protected; when two trains are connected and hung or are overhauled and pulled, the left cabin door and the right cabin door are opened, and the coupler is exposed so as to be convenient to connect and hang. At present, the opening and closing mechanisms at home and abroad are mainly divided into a manual opening and closing mechanism and an automatic opening and closing mechanism, the opening and closing mechanisms are divided into an up-down opening and closing mechanism and a left-right opening and closing mechanism in terms of opening and closing modes, and the existing locking (or unlocking) modes of the cabin doors are respectively and independently locking (or unlocking) the cabin doors.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a locomotive hood unblock closing device in step can realize the function of two hatches of locking simultaneously (or unblock) through an operation action.
A locomotive hood unlocks the switching device synchronously, the concrete technical scheme is as follows:
a locomotive hood opening and closing device comprises a framework assembly combination, an annular hood and a cabin door, wherein the cabin door is arranged at an opening of the annular hood and is connected with the annular hood through the framework assembly combination; the framework assembly combination is provided with a rocker arm connected with the cabin door, a driving unit driving the rocker arm to rotate and a locking device controlling the cabin door to be locked;
the locking device comprises a power source and a sliding groove assembly connected with the power source, the sliding groove assembly comprises a sliding groove seat, a movable plate and a limiting clamping plate arranged on the movable plate, the limiting clamping plate can slide on the sliding groove seat, and limiting devices matched with the rocker arm are arranged on the limiting clamping plate.
Furthermore, a second limiting clamping groove is formed in the front end of the limiting clamping plate, and a limiting stop block is arranged at the rear end of the limiting clamping plate; the rocker arm is provided with a limiting sleeve matched with the limiting clamping groove two on the limiting clamping plate, and one end of the rocker arm close to the rotating shaft is provided with a limiting clamping groove one matched with the limiting stop block on the limiting clamping plate.
Further, the chute seat is fixed on the framework assembly through bolts; the sliding groove seat is provided with a roller path, and the movable plate is connected with the sliding groove seat through a roller.
Furthermore, the locking device also comprises a manual locking mechanism, and the manual locking mechanism comprises a lower locking rotary drum, a movable locking spring and a lower locking swing rod which are sequentially connected; the lower locking rotary drum is connected with the limiting clamping plate.
Furthermore, the free end of the lower locking swing rod is a regular hexagonal prism, and the lower locking rotary drum is driven to rotate by an external hexagonal wrench.
Furthermore, the cabin door is a double door and comprises a left cabin door and a right cabin door; a left maintenance door is arranged on the left side wall of the annular hood, and a right maintenance door is arranged on the right side wall of the annular hood; the driving unit is an execution cylinder, and the power source of the locking device is a locking cylinder; the execution cylinder and the locking cylinder are both connected with the control unit.
Furthermore, the framework assembly combination comprises an upper framework assembly combination and a lower framework assembly combination, and the driving unit and the locking device are both arranged on the lower framework assembly combination; the lower framework assembly further comprises a left lower rocker arm, a right lower rocker arm, a lower mounting plate and a lower mounting seat; one end of the left lower rocker arm is connected with the left cabin door, and the other end of the left lower rocker arm is connected with the lower mounting plate through a first rotating shaft; one end of the right lower rocker arm is connected with the right cabin door, and the other end of the right lower rocker arm is connected with the lower mounting plate through a second rotating shaft; the lower mounting plate is fixed at the bottom of the inner wall of the annular head cover through a lower mounting seat;
the upper framework assembly combination comprises a left upper rocker arm, a right upper rocker arm, an upper mounting plate and an upper mounting seat; one end of the left upper rocker arm is connected with the left cabin door, and the other end of the left upper rocker arm is connected with the upper mounting plate through a third rotating shaft; one end of the right upper rocker arm is connected with the right cabin door, and the other end of the right upper rocker arm is connected with the upper mounting plate through a fourth rotating shaft; the upper mounting plate is fixed on the top of the inner wall of the annular head cover through an upper mounting seat.
Further, still be equipped with the air spring on going up the skeleton assembly components and assembling, air spring one end links to each other with last rocking arm, and the other end links to each other with last mount pad.
Furthermore, the upper framework assembly combination and the lower framework assembly combination are made of aluminum alloy materials.
The utility model discloses following beneficial effect has:
1. the utility model provides a pair of synchronous unblock switching device of locomotive hood, this switching device includes automatic switching operating system and synchronous unblock locking mechanism, wherein automatic switching operating system promotes the rocking arm motion by electrical system program control actuating cylinder and realizes that the hatch door is opened and closes, synchronous unblock locking mechanism drives spacing cardboard seesaw through locking cylinder or manual locking mechanism, ensure down left side, spacing cover (when the hatch door is closed) on the rocking arm of the right side falls into two spacing draw-in grooves of spacing cardboard front end, prevent the rocking arm to rotate, hatch door synchronous locking about the realization. When the cabin door is locked when opened, two limit stop blocks at the rear end of the limit clamping plate respectively fall into the limit clamping grooves at the rear ends of the lower left rocker arm assembly and the lower right rocker arm assembly to prevent the rocker arms from rotating. When the cabin door is unlocked, the limiting clamping plate moves backwards, so that the limiting sleeve or the rear limiting stop block is separated from the corresponding limiting clamping groove, the lower left rocker arm and the lower right rocker arm are assembled and unlocked, and the left cabin door and the right cabin door are synchronously unlocked. The limiting clamping plate is arranged on the sliding groove assembly, and under the action of push-pull force exerted by the locking cylinder (or the manual unlocking mechanism), the movable plate can move back and forth on the sliding groove seat through the rollers to drive the limiting clamping plate to move, so that the function of the locking mechanism is realized.
2. The utility model provides a pair of locomotive hood unblock switching device in step, hatch door self return device specifically be equipped with the air spring for the rocking arm on the hatch door, even the hatch door is opened or is closed not in place, also can arrive its ideal position under the effect of air spring force, when guaranteeing to operate the locking, the stop collar can fall into corresponding recess. The auxiliary cabin door is ensured to return to an open or closed limit position in a free state through the acting force of the gas spring.
3. The utility model provides a pair of locomotive hood unblock switching device in step, manual locking mechanism in locking spring can realize when locking or two positions of unblock, apply the effort to the spout equipment, avoid spacing cardboard to remove when moving, play supplementary locking effect, automatic function and manual function mutually noninterfere moreover.
4. The utility model provides a pair of locomotive hood unblock closing device in step, the unblock mode of adoption no matter unblock or locking, can both be with both sides hatch door unblock (or locking) simultaneously.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic overall structure diagram of the preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of the lower frame assembly of the preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of a lower left (or right) rocker arm assembly rocker arm of a preferred embodiment of the present invention;
FIG. 4 is a top view of the chute assembly of the preferred embodiment of the invention;
FIG. 5 is a front view of the chute assembly of the preferred embodiment of the invention;
figure 6 is a left side view of the chute assembly of the preferred embodiment of the invention;
FIG. 7 is a view of the preferred embodiment of the present invention showing the door in a locked position when closed;
figure 8 is a view of the preferred embodiment of the present invention showing the door in an unlocked position when closed;
figure 9 is a view of the preferred embodiment of the present invention with the door open, unlocked;
FIG. 10 is a view of the preferred embodiment of the present invention showing the door in a locked position when open;
fig. 11 is a schematic structural view of a manual locking mechanism according to a preferred embodiment of the present invention;
fig. 12 is a schematic view of a partial structure of the manual unlocking mechanism according to the preferred embodiment of the present invention;
FIG. 13 is a schematic view of a gas spring connection in accordance with a preferred embodiment of the present invention;
FIG. 14 is a schematic structural view of the upper frame assembly of the preferred embodiment of the present invention;
the device comprises an upper framework assembly combination, a ring-shaped head cover, a left maintenance door, a lower framework assembly combination, a right maintenance door, a left cabin door, a left lower rocker arm, a manual locking mechanism, a rotating shaft I, a rotating shaft 10, an execution cylinder, a pneumatic control box, a 12 electric control box, a 13 locking cylinder, a 14 sliding groove assembly, a 16 lower right rocker arm, a 17 right cabin door, a 18 limiting sleeve, a 19 sliding groove seat, a 20 movable plate, a 21 roller, a 22 limiting clamping plate, a 23 limiting stopper, a 24 lower locking swing rod, a 25 locking spring, a 26 lower locking rotary cylinder, a 27 upper rocker arm, a 28 air spring, a 29 upper mounting seat, a 30 limiting clamping groove I, a 31 limiting clamping groove II, and a left maintenance door, wherein the rotating shaft I, the executing cylinder, the pneumatic control box, the lower clamping groove assembly, the.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Example 1
Referring to fig. 1 to 6, a locomotive hood opening and closing device comprises an upper framework assembly combination 1, a lower framework assembly combination 4, an annular hood 2 and a cabin door, wherein the cabin door is arranged at an opening of the annular hood 2, the upper end of the inner wall of the cabin door is connected with the top of the inner wall of the annular hood 2 through the upper framework assembly combination 1, and the lower end of the inner wall of the cabin door is connected with the bottom of the inner wall of the annular hood 2 through the lower framework assembly combination 4. The hatch door is a double door and comprises a left hatch door 6 and a right hatch door 17. The left side wall of the annular hood 2 is provided with a left maintenance door 3, and the right side wall of the annular hood 2 is provided with a right maintenance door 5, so that the maintenance and the repair of an opening and closing mechanism are facilitated.
The lower framework assembly combination 4 comprises a left lower rocker arm 7, a right lower rocker arm 16, a lower mounting plate and a lower mounting seat; one end of a left lower rocker arm 7 is connected with the left cabin door 6, and the other end of the left lower rocker arm 7 is connected with the lower mounting plate through a first rotating shaft 9; one end of a right lower rocker arm 16 is connected with a right cabin door 17, and the other end of the right lower rocker arm 16 is connected with a lower mounting plate through a second rotating shaft; the lower mounting plate is fixed at the bottom of the inner wall of the annular head cover 2 through a lower mounting seat.
And the lower framework assembly combination 4 is also provided with a driving unit for driving the left lower rocker arm 7 and the right lower rocker arm 16 to rotate and a locking device for controlling the locking of the cabin door.
The locking device comprises a power source and a chute assembly 14 connected with the power source, the chute assembly 14 comprises a chute seat 19, a movable plate 20 and a limiting clamping plate 22 arranged on the movable plate 20, the limiting clamping plate 22 can slide on the chute seat 19, the front end of the limiting clamping plate 22 is provided with a limiting clamping groove II 31, and the rear end of the limiting clamping plate 22 is provided with a limiting stop 23; the lower rocker arm (comprising the left lower rocker arm 7 and the right lower rocker arm 16) is provided with a limiting sleeve 18 which is matched with a limiting clamping groove II 31 on the limiting clamping plate 22, and one end of the lower rocker arm, which is close to the rotating shaft (namely the rotating shaft I and the rotating shaft II), is provided with a limiting clamping groove I30 which is matched with a limiting stop block 23 on the limiting clamping plate 22. The driving unit is an execution cylinder 10, the power source of the locking device is a locking cylinder 13, and the execution cylinder 10 and the locking cylinder 13 are both connected with the control unit. The control unit comprises a pneumatic control box 11 arranged at the left service door 3 and an electric control box 12 arranged at the right service door 5. An electric control system program in the control unit controls the execution cylinder 10 to push the left lower rocker arm 7 and the right lower rocker arm 16 to move so as to realize the opening and closing of the cabin door, and controls the locking cylinder 13 to push the chute assembly 14 so as to realize the locking and unlocking of the cabin door.
In one embodiment, the chute seat 19 is fixed on the lower framework assembly 4 through bolts; the chute seat 19 is provided with two raceways, and the movable plate 20 is connected with the chute seat 19 through rollers. The chute seat 19 is provided with two raceways, the movable plate 20 is arranged on the chute seat 19 during assembly, and the four rollers 21 are inserted into the two raceways from inside to outside and connected with the movable plate 20 through bolts; the limiting clamping plate 22 can be flexibly moved on the sliding groove seat 19, then the limiting clamping plate 22 is installed on the movable plate 20, and then the limiting clamping plate is installed on the lower framework assembly 4 through four holes in the bottom of the sliding groove seat 19 by bolts. The locking cylinder 13 is connected with a limit catch plate 22. The locking cylinder can drive the limiting clamping plate 22 to move back and forth by stretching.
The locking device also comprises a manual locking mechanism 8, wherein the manual locking mechanism 8 comprises a lower locking rotary drum 26, a lower locking spring 25 and a lower locking swing rod 24 which are sequentially connected; the lower locking drum 26 is connected with the limiting catch plate 22.
The free end of the lower locking swing rod 24 is a regular hexagonal prism, and the lower locking rotary drum 26 is driven to rotate by an external hexagonal wrench.
The upper framework assembly 1 comprises a left upper rocker arm, a right upper rocker arm, an upper mounting plate and an upper mounting seat 29; one end of the left upper rocker arm is connected with the left cabin door 6, and the other end of the left upper rocker arm is connected with the upper mounting plate through a third rotating shaft; one end of the right upper rocker arm is connected with the right cabin door 17, and the other end of the right upper rocker arm is connected with the upper mounting plate through a fourth rotating shaft; the upper mounting plate is fixed on top of the inner wall of the ring head housing 2 by an upper mounting seat 29. The upper framework assembly 1 is further provided with a gas spring 28, one end of the gas spring is connected with an upper rocker arm 27 (comprising a left upper rocker arm and a right upper rocker arm), and the other end of the gas spring is connected with an upper mounting seat 29. Even if the cabin door is not opened or closed in place, the limiting sleeve can fall into the corresponding groove under the action of the gas spring force to reach the ideal position, and the operation locking is ensured. The auxiliary cabin door is ensured to return to an open or closed limit position in a free state through the acting force of the gas spring.
The upper framework assembly combination 1 and the lower framework assembly combination 4 are made of aluminum alloy materials.
The utility model provides a pair of locomotive hood switching device concrete working process as follows:
1. automatic opening and closing function
As shown in fig. 7-10, the electric control valve in the pneumatic control box 11 is controlled by the program in the electric control box 12 to realize the opening and closing actions, which are as follows: the first step is as follows: the cylinder rod of the locking cylinder 13 contracts to drive the limiting clamping plate 22 to retreat from the cabin door locking position in the figure 7 to the cabin door unlocking position in the figure 8, the limiting clamping groove II 31 at the front end of the limiting clamping plate 22 is separated from the limiting sleeve 18 on the rocker arm, and the opening and closing mechanism is unlocked; in the second step, two actuating cylinder groups 10 (respectively connected to the lower left rocker arm 2 and the lower right rocker arm 16) are actuated to get gas, and the cylinders retract to drag the lower rocker arm (including the lower left rocker arm 2 and the lower right rocker arm 16) to rotate, so as to drive the cabin door to open (as shown in fig. 9). A third step; the cylinder rod of the locking cylinder 13 extends out to push the limiting clamping plate combination 22 to move forwards through the roller 21, and the limiting stop block 23 is inserted into the limiting clamping groove I30 on the lower rocker arm. The stop catch plate 22 is moved from the position of figure 9 to the position of figure 10, the rocker arms are locked and the door is locked. If the hatch needs to be closed, the operation is reversed according to the method.
2. Manual opening and closing function
When the pneumatic function fails, the opening and closing mechanism can be manually opened or locked, firstly, a manual locking mechanism is specially designed, as shown in fig. 11 and 12, the manual locking mechanism 8 comprises a lower locking rotary drum 26, a locking spring 25, a lower locking swing rod 24 and a standard part, a clamping groove at the front end of the lower locking swing rod 24 is connected with a movable plate 20, and the lower locking rotary drum 26 rotates to drive a limiting clamping plate 22 to move back and forth, so that the functions of manual locking and unlocking are realized.
When the cabin door needs to be manually opened, a socket wrench can be used for inserting a hexagonal column below the lower locking rotary drum 26, the lower locking rotary drum 26 is rotated, the lower locking swing rod 24 rotates along with the lower locking rotary drum 26 and drives the movable plate 20 to move backwards, the lower locking swing rod 24 can stretch out and draw back the lower locking rotary drum 1 to eliminate the change of radius, the second limiting clamping groove 31 at the front end of the limiting clamping plate 22 on the upper portion of the movable plate 20 withdraws from the limiting sleeves 18 on the two lower rocker arms, and the two lower rocker arms are unlocked simultaneously. The cabin door is directly opened by hand, and the position of the upper limit catch plate 22 is flexibly locked by the acting force of the locking spring 25. If the locking is needed, the cabin door can be opened to the maximum, then the lower locking rotary drum 26 is rotated reversely, the sliding groove assembly 14 moves forwards, the limiting block 23 on the limiting clamping plate 22 is inserted into the limiting clamping groove I30 on the rocker arm, two lower rocker arms can be locked simultaneously, and the cabin door is locked.
Considering that when the door is manually operated, if the door is not at the maximum or minimum position, a state that the door cannot be locked may exist during manual locking, so that an automatic door returning device is added, as shown in fig. 13 and 14, a gas spring 28 is added on the upper framework assembly 1 to assist in pushing, and when the door is close to be opened to the maximum or close to be closed, the gas spring 28 can push the door to the maximum position, so that locking and locking can be effectively clamped. The force of the gas spring always assists the door to rotate to the limit position no matter the door is opened or closed.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The opening and closing device for the locomotive hood is characterized by comprising a framework assembly combination, an annular hood and a cabin door, wherein the cabin door is arranged at an opening of the annular hood and is connected with the annular hood through the framework assembly combination; the framework assembly combination is provided with a rocker arm connected with the cabin door, a driving unit driving the rocker arm to rotate and a locking device controlling the cabin door to be locked;
the locking device comprises a power source and a sliding groove assembly connected with the power source, the sliding groove assembly comprises a sliding groove seat, a movable plate and a limiting clamping plate arranged on the movable plate, the limiting clamping plate can slide on the sliding groove seat, and limiting devices matched with the rocker arm are arranged on the limiting clamping plate.
2. The opening and closing device for the locomotive hood according to claim 1, wherein a second limit clamping groove is formed at the front end of the limit clamping plate, and a limit stop is formed at the rear end of the limit clamping plate; the rocker arm is provided with a limiting sleeve matched with the limiting clamping groove two on the limiting clamping plate, and one end of the rocker arm close to the rotating shaft is provided with a limiting clamping groove one matched with the limiting stop block on the limiting clamping plate.
3. The opening and closing device for a hood of a locomotive according to claim 1, wherein the chute holder is fixed on the frame assembly by bolts; the sliding groove seat is provided with a roller path, and the movable plate is connected with the sliding groove seat through a roller.
4. The opening and closing device for the locomotive hood according to claim 1, wherein the locking device further comprises a manual locking mechanism, and the manual locking mechanism comprises a lower locking rotary drum, a movable locking spring and a lower locking swing rod which are connected in sequence; the lower locking rotary drum is connected with the limiting clamping plate.
5. The opening and closing device for the locomotive hood according to claim 4, wherein the free end of the lower locking swing rod is a regular hexagonal prism, and the lower locking rotary drum is driven to rotate by an external hexagonal wrench.
6. The opening and closing device for the hood of a locomotive according to claim 1, wherein the doors are double doors comprising a left door and a right door; a left maintenance door is arranged on the left side wall of the annular hood, and a right maintenance door is arranged on the right side wall of the annular hood; the driving unit is an execution cylinder, and the power source of the locking device is a locking cylinder; the execution cylinder and the locking cylinder are both connected with the control unit.
7. The opening and closing device for the hood of the locomotive according to claim 6, wherein the skeleton assembly comprises an upper skeleton assembly and a lower skeleton assembly, and the driving unit and the locking device are both arranged on the lower skeleton assembly; the lower framework assembly further comprises a left lower rocker arm, a right lower rocker arm, a lower mounting plate and a lower mounting seat; one end of the left lower rocker arm is connected with the left cabin door, and the other end of the left lower rocker arm is connected with the lower mounting plate through a first rotating shaft; one end of the right lower rocker arm is connected with the right cabin door, and the other end of the right lower rocker arm is connected with the lower mounting plate through a second rotating shaft; the lower mounting plate is fixed at the bottom of the inner wall of the annular head cover through a lower mounting seat;
the upper framework assembly combination comprises a left upper rocker arm, a right upper rocker arm, an upper mounting plate and an upper mounting seat; one end of the left upper rocker arm is connected with the left cabin door, and the other end of the left upper rocker arm is connected with the upper mounting plate through a third rotating shaft; one end of the right upper rocker arm is connected with the right cabin door, and the other end of the right upper rocker arm is connected with the upper mounting plate through a fourth rotating shaft; the upper mounting plate is fixed on the top of the inner wall of the annular head cover through an upper mounting seat.
8. The opening and closing device for a hood of a locomotive according to claim 7, wherein said upper frame assembly further comprises a gas spring, one end of said gas spring is connected to said upper rocker arm, and the other end of said gas spring is connected to said upper mounting seat.
9. The opening and closing device for the locomotive hood according to claim 7, wherein the upper frame assembly and the lower frame assembly are made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420853.5U CN210554814U (en) | 2019-08-29 | 2019-08-29 | Locomotive head cover opening and closing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420853.5U CN210554814U (en) | 2019-08-29 | 2019-08-29 | Locomotive head cover opening and closing device |
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| Publication Number | Publication Date |
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| CN210554814U true CN210554814U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921420853.5U Active CN210554814U (en) | 2019-08-29 | 2019-08-29 | Locomotive head cover opening and closing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422186A (en) * | 2019-08-29 | 2019-11-08 | 湖南联诚轨道装备有限公司 | A kind of locomotive head cover opening/closing device |
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2019
- 2019-08-29 CN CN201921420853.5U patent/CN210554814U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110422186A (en) * | 2019-08-29 | 2019-11-08 | 湖南联诚轨道装备有限公司 | A kind of locomotive head cover opening/closing device |
| CN110422186B (en) * | 2019-08-29 | 2024-09-03 | 湖南联诚轨道装备有限公司 | Locomotive hood opening and closing device |
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