CN111827400A - Automatic folding device for storage barrel support of excavator and using method of automatic folding device - Google Patents
Automatic folding device for storage barrel support of excavator and using method of automatic folding device Download PDFInfo
- Publication number
- CN111827400A CN111827400A CN202010646367.6A CN202010646367A CN111827400A CN 111827400 A CN111827400 A CN 111827400A CN 202010646367 A CN202010646367 A CN 202010646367A CN 111827400 A CN111827400 A CN 111827400A
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- support
- push rod
- storage barrel
- barrel
- working position
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
- E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The invention relates to an automatic folding device of a storage barrel support for an excavator, which comprises a storage barrel support, a push rod and a first pressure sensor, wherein the storage barrel support is hinged with an excavator body; the second pressure sensor is arranged on the storage barrel supporting seat and used for sensing whether the storage barrel is arranged or not; and the controller is used for receiving signals of the first pressure sensor and the second pressure sensor and controlling the push rod to move. This put automatic folding device of thing bucket support can adjust the direction that sets up of putting the thing bucket support according to actual need, and then the adjustment is put the condition that the thing bucket support occupies the passageway, and the device not only can be applied to and place all the other thing buckets that put that the butter bucket also can be used to the installation of needs vehicle-mounted.
Description
Technical Field
The invention relates to an automatic folding device for a storage barrel support of an excavator, and belongs to the technical field of engineering machinery.
Background
In the daily operation process of the excavator, the key parts such as a working device, a rotary system and the like need to be lubricated and maintained at regular time, and the use of grease is very frequent. For lubrication and maintenance convenience, customers generally purchase barrels of butter, store the butter on an excavator, and carry the butter with the excavator. This requires that the excavator manufacturer have a space for storing butter barrels at the beginning of the excavator design. As the butter barrel on the market is in a standard specification, the size of the butter barrel bracket can be determined according to the chapter. But because the small-size excavator's space is narrow and small, the overall arrangement is compact, can not guarantee to be provided with sufficient space and be used for depositing butter bucket alone. The excavator is characterized in that a plurality of small excavator manufacturers design the butter barrel support near the pedal of the right turntable, most of the small excavator manufacturers adopt bolts for fixing, the installation positions of the small excavator manufacturers occupy the size space of a part of maintenance channels, the maintenance channels are used for areas through which personnel pass during maintenance, the maintenance personnel need to pass through the pedals when maintaining the main valve, then the main valve can reach the areas through the positions above the tool boxes, and the areas through which the main valve passes are the channels. After the maintenance passageway is occupied, can cause certain influence and potential safety hazard to climbing getting on the bus when the maintenance personal carries out main valve part maintenance.
Disclosure of Invention
The invention provides an automatic folding device for a storage barrel support for a digger, aiming at solving the potential safety hazard caused by the arrangement of a butter barrel support to climbing and boarding maintenance personnel in the prior art.
The technical scheme adopted by the invention is as follows: an automatic folding device for a support of a storage barrel for an excavator comprises
The article placing barrel support is hinged to the vehicle body and used for fixing an article placing barrel, the article placing barrel support is rotatably connected with the vehicle body through a rotating shaft, the rotating shaft is horizontally arranged, the article placing barrel support is an annular fixed article placing barrel and comprises a working position and a non-working position, and the article placing barrel support is switched between the working position and the non-working position through rotating around the rotating shaft;
the storage barrel supporting seat is arranged below the storage barrel support and is used for placing the storage barrel and bearing the weight of the storage barrel, and the storage barrel support and the storage barrel supporting seat are matched with each other to arrange the storage barrel;
the push rod is connected with the storage barrel support and pushes the storage barrel support to rotate around the rotating shaft so that the storage barrel support is switched between a working position and a non-working position;
the first pressure sensor is arranged on the pedal plate and used for sensing whether a person gets on the bicycle or not;
the second pressure sensor is arranged on the storage barrel supporting seat and used for sensing whether the storage barrel is arranged or not;
and the controller is used for receiving signals of the first pressure sensor and the second pressure sensor and controlling the push rod to move.
Further, the push rod is electric control's flexible push rod, push rod one end is fixed in on the automobile body through the mounting, and the other end is connected and is put thing bucket support to keeping away from automobile body lopsidedness, the push rod with the automobile body is the contained angle setting.
Further, set up the automobile body of putting thing bucket support department is diesel tank, it sets up on the diesel tank outer wall to put thing bucket support.
Further, it is the arc ring to put thing bucket support, the articulated diesel tank wall of connecting in arc ring both ends, arc ring and diesel tank wall mutually support will put thing bucket and encircle fixedly, it includes work position and non-work position to put thing bucket support, the work position is the horizontal direction, the non-work position is vertical direction or is the settlement acute angle with the diesel tank wall, push rod control is put thing bucket support and is revoluted the rotation of axes and switch between work position and non-work position.
Furthermore, the storage barrel supporting seat is fixed on the tool box through a bolt, and the tool box is connected to the rotary table through a bolt and used for bearing the storage barrel and simultaneously taking the effect of the pedal into consideration.
Further, a first proximity switch and a second proximity switch are arranged on the article holding barrel support, the first proximity switch and the second proximity switch are arranged up and down in the vertical direction, and the first proximity switch is arranged above the second proximity switch;
when the push rod pushes the storage barrel support to turn upwards and is switched from a working position to a non-working position, the distance between the first proximity switch and the wall of the diesel tank is gradually reduced, the distance between the second proximity switch and the wall of the diesel tank is gradually increased, when the push rod is switched to the non-working position, the first proximity switch is triggered, and the push rod is controlled by the controller to stop moving;
when the push rod pulls the object placing barrel support to overturn downwards and is switched from a non-working position to a working position, the second proximity switch is triggered, and the controller controls the push rod to stop moving.
Further, still including setting up in the reset switch of footboard side, reset switch is for controlling whether the thing bucket support resets to the work position.
Furthermore, the controller also comprises a mode switch for controlling the controller to be opened and closed, the mode switch is in an opening state, and the controller controls the push rod to move.
Furthermore, butter is arranged in the storage barrel.
The invention also discloses a use method of the automatic folding device for the storage barrel support for the excavator, which comprises the steps of
A first pressure sensor on the pedal plate collects a pressure signal on the pedal plate and transmits the signal to a controller;
a second pressure sensor of the butter barrel supporting seat acquires the pressure on the butter barrel supporting seat and transmits a signal to the controller;
the controller outputs corresponding instructions according to the signal results acquired by the two pressure sensors: (1) when the pressure of the pedal reaches a set value and the pressure on the butter barrel supporting seat is smaller than the set value, the push rod is controlled to push the butter barrel to a non-working position; (2) when the pressure of the pedal reaches a set value and the pressure on the butter barrel supporting seat is greater than the set value, the controller controls the push rod to be fixed, and the butter barrel support is kept at a working position.
The beneficial effects produced by the invention comprise: the device can control whether the support frame of the object placing barrel is folded to a non-working position according to the actual situation, so that maintenance personnel are not hindered to get on the vehicle for maintenance, and the safety is ensured.
Drawings
FIG. 1: the component composition of the invention is schematically shown;
FIG. 2: the control schematic diagram of the implementation of the invention;
FIG. 3: the control logic flow diagram of the present invention;
FIG. 4: the working flow chart of the device in the invention.
In the figure, 1, a butter barrel, 2, a butter barrel bracket, 3, a butter barrel supporting seat, 4, a first pressure sensor, 5, a second pressure sensor, 6, a reset switch, 7, a mode switch, 8, a push rod, 9, a rotating shaft, 10, a first proximity switch, 11, a second proximity switch, 12, a pedal, 13 and a bolt.
Detailed Description
The invention is explained in further detail below with reference to the figures and the detailed description, but it should be understood that the scope of protection of the invention is not limited to the specific examples.
Referring to fig. 1-2, the automatic folding device for the support of the butter barrel 1 for the excavator comprises a butter barrel support 2, a butter barrel support base 3, a controller, a first pressure sensor 4, a second pressure sensor 5, an electric push rod 8, a first proximity switch 10, a second proximity switch 11, a reset switch 6 and a mode switch 7.
The diesel oil tank is characterized in that a diesel oil tank support 2 is hinged to a vehicle body through a rotating shaft 9 and a connecting piece, specifically, the diesel oil tank support 2 is used for fixing a diesel oil tank 1, the diesel oil tank support 2 is rotatably connected with the diesel oil tank through the rotating shaft 9 and can be turned upwards or downwards around the rotating shaft 9, the rotating shaft 9 is horizontally arranged, the diesel oil tank support 2 is an arc-shaped ring or a semicircular ring and surrounds the diesel oil tank wall to form a ring to fix the diesel oil tank 1 on one side of the diesel oil tank wall, the diesel oil tank support 2 comprises a working position and a non-working position, if the diesel oil tank 1 needs to be fixed, the diesel oil tank support must be in the working position, and when the; when being in the work position, the area occupied is big on the horizontal width direction, and the distance that butter bucket support 2 extended to keeping away from the diesel tank outer wall is bigger when being less than the work position promptly.
More specifically, the horizontal direction is arranged in to the ring that the work position formed for arc ring and butter bucket 1 wall, and when being in the non-work position, the arc ring is rotatory around pivot 9, and the arc ring is close to the diesel tank wall, is acute angle setting or vertical setting with the diesel tank wall, and the limit of arc ring is the broadside, and the arc ring can set up to only can be by rotatory switching between work position and non-work position, can not overturn downwards by the work position, and above-mentioned pivot is the round pin axle, and at the inboard installation matched with split pin of support.
The butter barrel supporting seat 3 is arranged below the butter barrel support 2, the butter barrel supporting seat 3 is used for placing a butter barrel 1 and bearing the weight of the butter barrel 1, the butter barrel support 2 and the butter barrel supporting seat 3 are matched with each other to fix the butter barrel 1, the butter barrel supporting seat 3 is connected above a tool box through a bolt, the effect of a pedal plate 12 is taken into consideration while bearing the storage barrel, the pedal plate 12 is connected with one side of the vehicle body and one side of the butter barrel supporting seat 3, which is far away from the vehicle body, are parallel and level in the vertical direction, and the butter barrel supporting seat is arranged on.
A first proximity switch 10 and a second proximity switch 11 are arranged on the storage barrel support, the first proximity switch 10 and the second proximity switch 11 are arranged up and down in the vertical direction, and the first proximity switch 10 is arranged above the second proximity switch 11; when the push rod 8 pushes the storage barrel support to upwards overturn and is switched to a non-working position by the working position, the distance between the first proximity switch 10 and the wall of the diesel tank is gradually reduced, the distance between the second proximity switch 11 and the wall of the diesel tank is gradually increased, and when the push rod reaches the non-working position, the first proximity switch 10 is triggered, and the controller controls the push rod 8 to stop moving. When the push rod 8 pulls the object placing barrel support to overturn downwards and is switched to a working position from a non-working position, the second proximity switch 11 is triggered, and the controller controls the push rod 8 to stop moving.
The first pressure sensor 4 is arranged on the pedal 12 and used for sensing whether a person gets on the vehicle or not; and the second pressure sensor 5 is arranged on the butter barrel supporting seat 3 and used for sensing whether the butter barrel 1 is placed or not.
And the controller is used for receiving signals of the first pressure sensor 4, the second pressure sensor 5, the first proximity switch 10 and the second proximity switch 11 and controlling the push rod 8 to move or stop.
The specific method of using the device of the present invention is shown in fig. 3 and 4:
in the invention, when the automatic mode switch 7 is turned ON, the first pressure sensor 4 ON the pedal 12 collects pressure signals ON the pedal 12 and transmits the signals to the controller, and the controller controls the second pressure sensor 5 ON the supporting seat of the butter barrel 1 and collects pressure ON the supporting seat of the butter barrel 1, and the controller outputs corresponding instructions according to the signal results collected by the two pressure sensors: (1) when the pedal 12 is trampled and no butter barrel 1 is arranged on the butter barrel 1 supporting seat, the butter barrel support 2 can be automatically lifted to a non-working position to leave a passage position, so that a person can conveniently climb on a vehicle for maintenance. After the maintenance is finished, the butter bucket support 2 can be restored to the horizontal position by pressing the reset switch 6 on the rotary table after getting off. (2) When the pedal 12 is detected to have a stepping action and the butter barrel 1 is arranged on the butter barrel 1 supporting seat, the controller does not make any instruction, and the butter barrel bracket 2 keeps the horizontal position still; when the automatic mode switch 7 is set to OFF, the controller does not collect any pressure signal, and the electric push rod 8 is at the minimum stroke position, namely the butter barrel support 2 is at the horizontal position.
The specific technical scheme adopted by the invention is as follows: (1) when the automatic mode switch 7 is turned ON, the pressure sensor 1 ON the pedal 12 collects a pressure signal ON the pedal 12 and converts the pressure signal into a weight signal through the controller, when the weight is larger than or equal to 40kg (namely, when a person treads ON the pedal), the controller controls the pressure sensor 2 to collect the weight ON the supporting seat of the butter barrel 1, when the weight is smaller than 0.5kg (namely, when the butter barrel 1 does not exist), the controller controls the electric push rod 8 to forwardly push the push rod 8 to enable the butter barrel support 2 to be lifted upwards clockwise, when the support is lifted to a set position, the proximity switch 1 is turned ON, and the electric push rod 8 stops acting and keeps the position motionless. Proximity switch 1 judges through the distance of monitoring and the vertical face of diesel tank to open and close, and when proximity switch opened, the support just in time was in the settlement position that will the lifting, and this position can also be for the vertical position that sets up also can be with the less position of the vertical face contained angle of diesel tank. When the support is horizontal, the push rod and the plane of the rotary table or the plane of the supporting seat form an angle of 80 degrees, and when the support is vertical upwards, the push rod and the plane of the rotary table or the plane of the supporting seat form an angle of 82 degrees. The angle of the push rod can be adjusted as limited by the installation size of the bracket. At the moment, the size of a passageway of the upper vehicle is given out, a maintenance worker can climb the upper vehicle through the position, returns to the ground after the maintenance is finished and presses the reset switch 6, the controller controls the electric push rod 8 to reversely push the push rod 8, so that the butter bucket support 2 is pushed anticlockwise and downwards, the proximity switch 2 is started until the support is turned over to a horizontal position, and the electric push rod 8 stops acting and keeps the horizontal position still; the proximity switch 2 is controlled to be opened and closed by monitoring the distance from the supporting seat. (2) When the weight of the sensor 1 is larger than or equal to 40kg (namely, when a person tramples on the sensor), the controller controls the second pressure sensor 5 to acquire the weight of the supporting seat of the butter barrel 1, and when the weight of the sensor 1 is larger than or equal to 0.5kg (namely, when the butter barrel 1 exists), the controller does not execute any instruction, and the electric push rod 8 is not moved. (3) When the weight collected by the first pressure sensor 4 is less than 40kg (i.e. no one steps on the pedal), the controller does not execute any instruction, and the electric push rod 8 is kept still. (4) When automatic mode switch 7 placed in OFF, all sensors no longer detected relevant signal, and electric putter 8 was in minimum stroke position, and butter bucket support 2 is in horizontal position promptly.
The pressure sensor, the controller, the reset switch 6, the mode switch 7 and the electric push rod 8 adopted by the invention are all elements commonly used on engineering machinery, and are produced and used in batch, so the invention is suitable for wide popularization and application.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the content of the embodiment. It will be apparent to those skilled in the art that various changes and modifications can be made within the technical scope of the present invention, and any changes and modifications made are within the protective scope of the present invention.
Claims (10)
1. The utility model provides an automatic folding device of thing bucket support is put to excavator which characterized in that: comprises that
The article placing barrel support is hinged to the vehicle body and used for fixing an article placing barrel, the article placing barrel support is rotatably connected with the vehicle body through a rotating shaft, the rotating shaft is horizontally arranged, the article placing barrel support is fixed to the article placing barrel in an annular mode, the article placing barrel support comprises a working position and a non-working position, and the article placing barrel support is switched between the working position and the non-working position through rotation around the rotating shaft;
the storage barrel supporting seat is arranged below the storage barrel support and is used for placing the storage barrel and bearing the weight of the storage barrel, and the storage barrel support and the storage barrel supporting seat are matched with each other to arrange the storage barrel;
the push rod is connected with the storage barrel support and pushes the storage barrel support to rotate around the rotating shaft so that the storage barrel support is switched between a working position and a non-working position;
the first pressure sensor is arranged on the pedal plate and used for sensing whether a person gets on the bicycle or not;
the second pressure sensor is arranged on the storage barrel supporting seat and used for sensing whether the storage barrel is arranged or not;
and the controller is used for receiving signals of the first pressure sensor and the second pressure sensor and controlling the push rod to move.
2. The automatic folding device of thing bucket support for excavator according to claim 1, characterized in that: the push rod is electric control's flexible push rod, push rod one end is fixed in on the automobile body through the mounting, and the other end is connected and is put thing bucket support to keeping away from automobile body one side slope, the push rod with the automobile body is the contained angle setting.
3. The automatic folding device of thing bucket support for excavator according to claim 1, characterized in that: the automobile body that sets up put thing bucket support department is diesel tank, it sets up on the diesel tank outer wall to put thing bucket support.
4. The automatic folding device of thing bucket support for excavator according to claim 1, characterized in that: put thing bucket support and be the arc ring, the articulated diesel tank wall of connecting in arc ring both ends, arc ring and diesel tank wall mutually support will put the thing bucket and encircle fixedly, it includes work position and non-work position to put the thing bucket support, the work position is the horizontal direction, the non-work position is vertical direction or is the settlement acute angle with the diesel tank wall, push rod control is put thing bucket support and is revoluted the rotation of axes and switch between work position and non-work position.
5. The automatic folding device of thing bucket support for excavator according to claim 1, characterized in that: the storage barrel supporting seat is arranged on the tool box, and the tool box is arranged on the rotary table.
6. The automatic folding device of thing bucket support for excavator according to claim 4, characterized in that: a first proximity switch and a second proximity switch are arranged on the article placing barrel support, the first proximity switch and the second proximity switch are arranged up and down in the vertical direction, and the first proximity switch is arranged above the second proximity switch;
when the push rod pushes the storage barrel support to turn upwards and is switched from a working position to a non-working position, the distance between the first proximity switch and the wall of the diesel tank is gradually reduced, the distance between the second proximity switch and the wall of the diesel tank is gradually increased, when the push rod is switched to the non-working position, the first proximity switch is triggered, and the push rod is controlled by the controller to stop moving;
when the push rod pulls the object placing barrel support to overturn downwards and is switched from a non-working position to a working position, the second proximity switch is triggered, and the controller controls the push rod to stop moving.
7. The automatic folding device of thing bucket support for excavator according to claim 1, characterized in that: the storage barrel support is characterized by further comprising a reset switch arranged on the side of the pedal plate, wherein the reset switch is used for controlling whether the storage barrel support is reset to a working position or not.
8. The automatic folding device of thing bucket support for excavator according to claim 1, characterized in that: the push rod control device further comprises a mode switch used for controlling the controller to be turned on and turned off, the mode switch is in an on state, and the controller controls the push rod to move.
9. The automatic folding device of thing bucket support for excavator according to claim 1, characterized in that: the storage barrel is internally provided with butter.
10. The utility model provides a use method of automatic folding device of thing bucket support is put to excavator which characterized in that: the method comprises the following steps:
a first pressure sensor on the pedal plate collects a pressure signal on the pedal plate and transmits the signal to a controller;
a second pressure sensor of the butter barrel supporting seat acquires the pressure on the butter barrel supporting seat and transmits a signal to the controller;
the controller outputs corresponding instructions according to the signal results acquired by the two pressure sensors: (1) when the pressure of the pedal reaches a set value and the pressure on the butter barrel supporting seat is smaller than the set value, the push rod is controlled to push the butter barrel to a non-working position; (2) when the pressure of the pedal reaches a set value and the pressure on the butter barrel supporting seat is greater than the set value, the controller controls the push rod to be fixed, and the butter barrel support is kept at a working position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010646367.6A CN111827400B (en) | 2020-07-07 | 2020-07-07 | Automatic folding device for storage barrel support of excavator and using method of automatic folding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010646367.6A CN111827400B (en) | 2020-07-07 | 2020-07-07 | Automatic folding device for storage barrel support of excavator and using method of automatic folding device |
Publications (2)
| Publication Number | Publication Date |
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| CN111827400A true CN111827400A (en) | 2020-10-27 |
| CN111827400B CN111827400B (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010646367.6A Active CN111827400B (en) | 2020-07-07 | 2020-07-07 | Automatic folding device for storage barrel support of excavator and using method of automatic folding device |
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| Country | Link |
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| CN (1) | CN111827400B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526643A (en) * | 2020-12-19 | 2021-03-19 | 河南安宏信息科技有限公司 | Automatic shielding device for rain gauge collecting port |
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| KR20100093714A (en) * | 2009-02-17 | 2010-08-26 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Foot step apparatus for heavy construction equipment |
| CN202945634U (en) * | 2012-11-23 | 2013-05-22 | 徐州徐工挖掘机械有限公司 | Excavator pedal plate structure capable of placing grease bucket |
| CN103407410A (en) * | 2013-08-16 | 2013-11-27 | 中国重汽集团济南动力有限公司 | Control method for automatic overturning getting-on pedal and getting-on pedal overturning device |
| CN110893817A (en) * | 2018-09-12 | 2020-03-20 | 台山市金桥铝型材厂有限公司 | Automobile side pedal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20080056891A (en) * | 2006-12-19 | 2008-06-24 | 두산인프라코어 주식회사 | Apparatus for turning a foothold of an excavator |
| KR20100093714A (en) * | 2009-02-17 | 2010-08-26 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Foot step apparatus for heavy construction equipment |
| CN202945634U (en) * | 2012-11-23 | 2013-05-22 | 徐州徐工挖掘机械有限公司 | Excavator pedal plate structure capable of placing grease bucket |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526643A (en) * | 2020-12-19 | 2021-03-19 | 河南安宏信息科技有限公司 | Automatic shielding device for rain gauge collecting port |
| CN112526643B (en) * | 2020-12-19 | 2023-06-16 | 河南安宏信息科技有限公司 | Automatic shielding device for collecting port of rain gauge |
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| CN111827400B (en) | 2022-06-10 |
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Address after: No.39, Gaoxin Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Applicant after: XCMG EXCAVATOR MACHINERY Co.,Ltd. Address before: 221100 Jiangsu city of Xuzhou province Xuzhou City Economic and Technological Development Zone of High Road No. 39 Applicant before: XCMG EXCAVATOR MACHINERY Co.,Ltd. |
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