CN111997472A - Engine compartment door opening and closing device and engineering machinery - Google Patents
Engine compartment door opening and closing device and engineering machinery Download PDFInfo
- Publication number
- CN111997472A CN111997472A CN202010883291.9A CN202010883291A CN111997472A CN 111997472 A CN111997472 A CN 111997472A CN 202010883291 A CN202010883291 A CN 202010883291A CN 111997472 A CN111997472 A CN 111997472A
- Authority
- CN
- China
- Prior art keywords
- door
- engine compartment
- detection part
- closing device
- opening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/50—Power-operated mechanisms for wings using fluid-pressure actuators
- E05F15/53—Power-operated mechanisms for wings using fluid-pressure actuators for swinging wings
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/40—Safety devices, e.g. detection of obstructions or end positions
- E05F15/41—Detection by monitoring transmitted force or torque; Safety couplings with activation dependent upon torque or force, e.g. slip couplings
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Application of doors, windows, wings or fittings thereof for vehicles characterised by the type of wing
- E05Y2900/536—Hoods
Landscapes
- Power-Operated Mechanisms For Wings (AREA)
Abstract
An engine compartment door opening and closing device and an engineering machine are provided, wherein the engine compartment door opening and closing device comprises a driving part, a control part, a pressure detection part and a displacement detection part; the driving part is in driving connection with the cabin door so as to drive the cabin door to open and close; the pressure detection part is arranged on the cabin door and is used for detecting the pressure applied to the cabin door; the displacement detection part is arranged on the driving part and is used for detecting the stroke of the cabin door; the pressure detection part and the displacement detection part are respectively electrically connected with the control part, and the control part controls the operation of the driving part according to feedback signals of the pressure detection part and the displacement detection part. The engine compartment door opening and closing device controls the driving part through the control part, the driving part directly drives the opening and closing of the compartment door, the laborious manual operation of workers is replaced, the opening and closing processes of the compartment door are monitored through the pressure detection part and the displacement detection part, the abnormity can be found in time, the accident is avoided, and the safety of personnel and machinery is guaranteed.
Description
Technical Field
The invention relates to the field of mechanical equipment, in particular to an engine compartment door opening and closing device and engineering machinery.
Background
At present, construction machines such as excavators are used more and more widely, and development of the construction machines is faster.
The development direction of the engineering machinery mainly includes two points, namely, performance improvement and ergonomic improvement, wherein the latter focuses on how to bring convenience and comfortable use experience to operators.
The engineering machinery is often large in size and complex in structure, wherein the engine compartment door is mostly opened or closed by manual operation of workers.
For heavy machinery, the engine compartment door is large in size and weight, and is very heavy, so that manual opening and closing operations of workers are laborious.
Disclosure of Invention
The invention aims to provide an engine compartment door opening and closing device, which is used for driving the opening or closing of a compartment door through a driving part, replaces the laborious manual operation of workers, and has better ergonomic experience.
Another object of the present invention is to provide an engineering machine, which employs the above device for opening and closing the cabin door of an engine cabin to replace the laborious manual operation of workers, so that the workers can open and close the cabin door conveniently and effortlessly, and the ergonomic effect is good.
The invention is realized by the following steps:
an engine compartment door opening and closing device includes a driving portion, a control portion, a pressure detection portion, and a displacement detection portion; the driving part is in driving connection with the cabin door so as to drive the cabin door to open and close; the pressure detection part is arranged on the cabin door and is used for detecting the pressure applied to the cabin door; the displacement detection part is arranged on the driving part and is used for detecting the stroke of the cabin door; the pressure detection part and the displacement detection part are respectively electrically connected with the control part, and the control part controls the operation of the driving part according to feedback signals of the pressure detection part and the displacement detection part.
The engine compartment door opening and closing device controls the driving part through the control part, the driving part directly drives the opening and closing of the compartment door, the laborious manual operation of workers is replaced, the opening and closing processes of the compartment door are monitored through the pressure detection part and the displacement detection part, the abnormity can be found in time, the accident is avoided, and the safety of personnel and machinery is guaranteed.
Further, the displacement detecting portion includes a distance sensor and/or a stroke sensor.
Further, the drive part includes the hydraulic stem, and the hydraulic stem includes the barrel and the body of rod, and the body of rod is connected with the hatch door, and displacement detection portion sets up on the barrel, and displacement detection portion is used for detecting the displacement of the body of rod.
Further, the pressure detection part includes a pressure sensor provided inside the door.
Further, the door is hinged to the engine compartment shell, and the pressure sensor is arranged at the edge of the door far away from the hinged shaft.
Further, the engine compartment door opening and closing device further comprises an energy accumulator, and the energy accumulator is in driving connection with the driving part.
Further, the driving part comprises a hydraulic rod, and the hydraulic rod comprises a cylinder body and a rod body; the energy storage part comprises a pressure oil tank.
Further, the engine compartment door opening and closing device further comprises a display device, the display device is electrically connected with the control part, and the display device is used for displaying the state of the door.
Further, the engine compartment door opening and closing device further comprises an illuminating device, the illuminating device is electrically connected with the control portion, and when the compartment door is opened, the control portion controls the illuminating device to emit light.
The engineering machinery comprises an engine compartment shell and a cabin door, wherein the cabin door is connected with the engine compartment shell and comprises an opening state and a closing state; the engineering machinery also comprises an engine compartment door opening and closing device, and a driving part of the engine compartment door opening and closing device is in driving connection with the door.
The engineering machinery adopts the engine compartment door opening and closing device, so that workers can open and close the engine compartment door conveniently and labor-saving, and the man-machine engineering effect is good.
The invention has the following beneficial effects: the engine compartment door opening and closing device drives the opening or closing of the compartment door through the driving part, replaces the labor-consuming manual operation of workers, and has better ergonomic experience. The engineering machinery adopts the engine compartment door opening and closing device to replace manual operation which is laborious for workers, so that the workers can open and close the engine compartment door conveniently and laborsavingly, and the man-machine engineering effect is better.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of an application scenario of an embodiment of the cabin door opening and closing device of the present invention;
fig. 2 is a schematic view of a hydraulic lever of an embodiment of the engine compartment door opening and closing device of the present invention;
fig. 3 is a simplified control relationship diagram of the embodiment of the engine compartment door opening and closing device of the present invention;
fig. 4 is a logical relationship diagram of the anti-pinch system of the embodiment of the cabin door opening and closing device of the present invention.
In the figure:
10-a hydraulic rod; 11-a barrel body; 12-a rod body; 13-a first tubing; 14-a second tubing; 20-a pressure detection part; 30-a displacement detection unit; 100-a cabin door; 200-engine compartment shell.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention 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 present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
The invention provides an engine compartment door opening and closing device, which replaces workers to manually open and close a door 100 through a driving part, thereby being more labor-saving and avoiding the occurrence of accidents of hurting people.
Referring to fig. 1 to 4, in this embodiment, the engine compartment door opening and closing device includes a driving part, a control part, a pressure detection part 20, and a displacement detection part 30; the driving part is in driving connection with the cabin door 100 to drive the cabin door 100 to open and close; the pressure detection part 20 is arranged on the hatch door 100 and is used for detecting the pressure applied to the hatch door 100; the displacement detection part 30 is arranged on the driving part and is used for detecting the stroke of the cabin door 100; the pressure detection unit 20 and the displacement detection unit 30 are electrically connected to the control unit, respectively, and the control unit controls the operation of the drive unit based on feedback signals from the pressure detection unit 20 and the displacement detection unit 30.
The engine compartment door opening and closing device is mainly used for driving the opening and closing of the door 100 of the engine compartment of the construction machine, and adopts the mechanical transmission of a driving part to operate the opening and closing of the door 100, thereby replacing the manual operation of workers.
As shown in fig. 2, in the present embodiment, the driving part is a hydraulic rod 10, and the displacement detecting part 30 includes a stroke sensor, which is provided on the cylinder 11 of the hydraulic rod 10, for detecting the stroke of the rod body 12 of the hydraulic rod 10.
In other embodiments, the displacement detecting unit 30 may further include a distance sensor, and the distance sensor may be configured to detect a distance from the rod 12 to the barrel 11, so as to determine the stroke of the rod 12.
The cylinder 11 is connected with a first oil pipe 13 and a second oil pipe 14 for controlling the extension and contraction of the rod body 12.
When the first oil pipe 13 fills oil into the cylinder 11, the rod body 12 extends forwards, and the hatch 100 performs opening movement; when the second oil pipe 14 fills oil into the cylinder 11, the rod 12 retracts backward, and the hatch 100 performs a closing motion.
As can be seen from fig. 1, the hatch door 100 is hinged to the nacelle cover 200, so that the hatch door 100 can be rotated relative to the nacelle cover 200 to effect opening and closing of the nacelle.
In fig. 1, the door 100 is in an open state in a broken line, and the door 100 is in a closed state in a solid line.
The detection data of the displacement detection part 30 is transmitted to the control part, and the control part can grasp the motion state of the hatch door 100 by analyzing the data of the displacement detection part 30 and can know whether the hatch door 100 is normally opened or closed by analysis.
For example, after the control unit sends a command to the driving unit to open the door 100, if the displacement detecting unit 30 detects that the rod 12 is not moving, it indicates that the system is abnormal, or an external force interferes with the opening of the door 100, and at this time, the control unit sends a stop command to the driving unit, and transmits abnormal information to the staff to wait for the staff to check.
As shown in fig. 1, the pressure detecting part 20 includes a pressure sensor, which is disposed inside the hatch door 100.
The hatch door 100 is hinged to the engine compartment shell 200, and the pressure sensor is provided at the edge of the hatch door 100 remote from the hinge axis.
During the closing of the hatch door 100, if there is an obstacle between the hatch door 100 and the engine compartment shell 200, the hatch door 100 cannot be returned to the closed state.
Therefore, the engine compartment door opening and closing device further comprises an anti-pinch system to avoid the situation.
The pressure sensor is mainly used for an anti-pinch system of an engine compartment door opening and closing device, referring to fig. 4, a pressure value X detected by the pressure sensor can be transmitted to the control part, the control part analyzes the pressure value X, and the pressure value X is compared with a set pressure value A prestored in a database.
If X is smaller than A, the pressure on the cabin door 100 is normal, and the driving part continues to work; if X is greater than or equal to a, it represents that the pressure applied to the hatch 100 is abnormal, and the pressure is too high, and there may be an obstacle, such as a human hand, between the hatch 100 and the engine compartment shell 200, at which time the control part controls the driving part to stop emergently, and sends out an alarm signal to wait for the processing of a worker.
The anti-pinch system can play a role in protecting the door frames on the cabin door 100 and the engine compartment case 200, can also play a role in protecting the driving part, and can also play a role in avoiding hurting people and protecting workers.
In another embodiment, not shown in the drawings, the pressure detecting part 20 includes a plurality of pressure sensors distributed on the inner side of the door 100, and the control part is electrically connected to each of the pressure sensors and analyzes the feedback value of each of the pressure sensors, thereby achieving more comprehensive monitoring and preventing accidents.
In this embodiment, the engine compartment door opening and closing device further includes an accumulator, and the accumulator is drivingly connected to the driving portion.
The energy accumulator mainly has the function of continuously providing power for the driving part under the condition that external power is lost, a series of safety accidents are easily caused by the force leakage of the driving part, and the potential safety hazard can be reduced as far as possible.
In the present embodiment, the driving part is a hydraulic rod 10, and the accumulator is a pressure tank.
The hydraulic oil tank is stored with enough hydraulic oil and is in a pressurized state, when external power is lost, namely a pump of a hydraulic system stops working, the switching valve switches the input oil path from the pump to the hydraulic oil tank, and the pressure of the hydraulic rod 10 is maintained by the hydraulic oil tank, so that the force leakage of the hydraulic rod 10 is avoided, and the safety and the reliability of the engine compartment door opening and closing device are improved.
The engine compartment door opening and closing device further includes a display device electrically connected to the control part, the display device being configured to display a state of the door 100.
The display device comprises a display, the display can be arranged in the cockpit or beside the engine compartment, the control part calculates the opening posture and the position of the cabin door 100 through displacement data collected by the displacement detection part 30 and transmits the opening posture and the position to the display so as to display the theoretical state of the cabin door 100 to workers in real time.
The engine compartment door opening and closing device further includes an illumination device electrically connected to the control part, and the control part controls the illumination device to emit light when the door 100 is opened.
When the hatch door 100 is opened, the illumination device automatically lights up to provide illumination within the engine compartment for the crew.
Fig. 3 shows a control relationship of an embodiment of the engine compartment door opening and closing device of the present invention, in which the system is started by a key switch, after the key switch is turned on, the main unit as the control unit receives power, the pressure sensor and the displacement sensor receive power, the hydraulic system in which the hydraulic rod 10 as the drive unit is located starts to operate, and the oil pump starts to operate to pressurize the hydraulic system and the pressure oil tank as the accumulator.
Analog signals of the pressure sensor and the displacement sensor are converted into digital signals through an AD converter, and the host machine receives the digital signals and is used for controlling the motion of the driving part.
The host computer has two driving modules, namely a door opening module and a door closing module. When the main body executes the door opening module, the main body reaches a forward extending command to the lower part of the driving part, and the rod body 12 of the hydraulic rod 10 extends forwards to open the door 100; when the main body executes the door closing module, a retraction command is sent to the driving part, and the rod body 12 of the hydraulic rod 10 is retracted backwards to close the door 100.
The anti-pinch system comprises a comparison module, a database and a pressure sensor, wherein the pressure value detected by the pressure sensor is compared with the pressure value prestored in the database, and whether the anti-pinch module is activated or not is judged according to the comparison result. If the pressure value detected by the pressure sensor is greater than or equal to the pressure value prestored in the database, the anti-pinch module is started, the driving part is stopped emergently, and the control part sends out an alarm signal.
The invention also provides engineering machinery, which comprises an engine cabin shell 200 and a cabin door 100, wherein the cabin door 100 is connected with the engine cabin shell 200, and the cabin door 100 comprises an opening state and a closing state; the construction machine further includes the above-described engine compartment door opening/closing device, and a driving portion of the engine compartment door opening/closing device is drivingly connected to the door 100.
By adopting the engine compartment door opening and closing device, the engineering machinery realizes the automatic opening and closing of the door 100, replaces the manual operation of workers, is more labor-saving and safer, has more excellent man-machine engineering design and better meets the requirements of modern engineering machinery.
The construction machine may be an excavator, a crane, a shovel car, a drilling machine, or the like, and the engine compartment door opening/closing device of the present invention may be applied as long as it has an engine compartment.
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 (10)
1. An engine compartment door opening and closing device characterized by comprising a driving part, a control part, a pressure detection part (20) and a displacement detection part (30); the driving part is in driving connection with the cabin door (100) so as to drive the cabin door (100) to open and close; the pressure detection part (20) is arranged on the cabin door (100) and is used for detecting the pressure applied to the cabin door (100); the displacement detection part (30) is arranged on the driving part and is used for detecting the stroke of the cabin door (100); the pressure detection part (20) and the displacement detection part (30) are respectively electrically connected with the control part, and the control part controls the operation of the driving part according to feedback signals of the pressure detection part (20) and the displacement detection part (30).
2. The engine compartment door opening and closing device according to claim 1, wherein the displacement detection portion (30) includes a distance sensor and/or a stroke sensor.
3. The engine compartment door opening and closing device according to claim 2, wherein the driving portion includes a hydraulic rod (10), the hydraulic rod (10) includes a cylinder (11) and a rod body (12), the rod body (12) is connected to the door (100), the displacement detecting portion (30) is provided on the cylinder (11), and the displacement detecting portion (30) is configured to detect a displacement of the rod body (12).
4. The engine compartment door opening and closing device according to claim 1, wherein the pressure detection portion (20) includes a pressure sensor provided inside the door (100).
5. The device for opening and closing a cabin door according to claim 4, characterized in that said door (100) is hinged on a cabin shell (200), said pressure sensor being arranged at the edge of said door (100) remote from the hinge axis.
6. The engine compartment door opening and closing device according to claim 1, further comprising an accumulator drivingly connected to the drive portion.
7. The engine compartment door opening and closing device according to claim 6, wherein the driving portion includes a hydraulic rod (10), the hydraulic rod (10) including a cylinder (11) and a rod body (12); the energy storage portion includes a pressure oil tank.
8. The device for opening and closing a cabin door according to claim 1, characterized in that it further comprises a display device electrically connected to said control portion, said display device being intended to display the status of said door (100).
9. The device according to claim 1, characterized in that it further comprises an illumination device electrically connected to the control portion, the control portion controlling the illumination device to emit light when the hatch (100) is opened.
10. A working machine, characterized by comprising a nacelle shell (200) and a hatch door (100), said hatch door (100) being connected to said nacelle shell (200), said hatch door (100) comprising an open state and a closed state; the construction machine further comprises an engine compartment door opening and closing device according to any one of claims 1 to 9, a drive part of which is drivingly connected to the door (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010883291.9A CN111997472A (en) | 2020-08-28 | 2020-08-28 | Engine compartment door opening and closing device and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010883291.9A CN111997472A (en) | 2020-08-28 | 2020-08-28 | Engine compartment door opening and closing device and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111997472A true CN111997472A (en) | 2020-11-27 |
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ID=73464456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010883291.9A Pending CN111997472A (en) | 2020-08-28 | 2020-08-28 | Engine compartment door opening and closing device and engineering machinery |
Country Status (1)
| Country | Link |
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| CN (1) | CN111997472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021016A (en) * | 2021-03-29 | 2021-06-25 | 杨铁数控机床(苏州)有限公司 | Numerical control machine tool |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377267Y (en) * | 2008-12-11 | 2010-01-06 | 卢泉生 | Anti-pinch safety device of revolving door |
| CN201531182U (en) * | 2009-09-24 | 2010-07-21 | 浙江华汇机械装备有限公司 | Hydraulic driving device for vertically-rotated flood-proof protection door |
| EP2803801A1 (en) * | 2013-05-17 | 2014-11-19 | Isaf Bus Components S.r.l. | Electric actuator for an entry and exit device, in particular a door |
| EP2803800A1 (en) * | 2013-05-17 | 2014-11-19 | Isaf Bus Components S.r.l. | Electric rotary actuator for an entry and exit device, in particular a door |
| CN205858023U (en) * | 2016-07-22 | 2017-01-04 | 程翌 | A kind of band hood liquid opening and closing device |
| CN109372371A (en) * | 2018-09-18 | 2019-02-22 | 湖南中大机械制造有限责任公司 | The automatic turning device of engine hood of construction machinery |
| CN110979344A (en) * | 2018-10-02 | 2020-04-10 | 通用汽车环球科技运作有限责任公司 | Electric door closing algorithm |
-
2020
- 2020-08-28 CN CN202010883291.9A patent/CN111997472A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201377267Y (en) * | 2008-12-11 | 2010-01-06 | 卢泉生 | Anti-pinch safety device of revolving door |
| CN201531182U (en) * | 2009-09-24 | 2010-07-21 | 浙江华汇机械装备有限公司 | Hydraulic driving device for vertically-rotated flood-proof protection door |
| EP2803801A1 (en) * | 2013-05-17 | 2014-11-19 | Isaf Bus Components S.r.l. | Electric actuator for an entry and exit device, in particular a door |
| EP2803800A1 (en) * | 2013-05-17 | 2014-11-19 | Isaf Bus Components S.r.l. | Electric rotary actuator for an entry and exit device, in particular a door |
| CN205858023U (en) * | 2016-07-22 | 2017-01-04 | 程翌 | A kind of band hood liquid opening and closing device |
| CN109372371A (en) * | 2018-09-18 | 2019-02-22 | 湖南中大机械制造有限责任公司 | The automatic turning device of engine hood of construction machinery |
| CN110979344A (en) * | 2018-10-02 | 2020-04-10 | 通用汽车环球科技运作有限责任公司 | Electric door closing algorithm |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021016A (en) * | 2021-03-29 | 2021-06-25 | 杨铁数控机床(苏州)有限公司 | Numerical control machine tool |
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Application publication date: 20201127 |