CN108716230B - engineering vehicle - Google Patents
engineering vehicle Download PDFInfo
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- CN108716230B CN108716230B CN201810836559.6A CN201810836559A CN108716230B CN 108716230 B CN108716230 B CN 108716230B CN 201810836559 A CN201810836559 A CN 201810836559A CN 108716230 B CN108716230 B CN 108716230B
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- Prior art keywords
- implement
- platform
- frame
- working
- arm
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
- E02F3/358—Bucket-arms pivoted on a turntable being part of a tractor frame or buckets arranged on a turntable supported by the arms
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/963—Arrangements on backhoes for alternate use of different tools
- E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine
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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
- E02F9/26—Indicating devices
- E02F9/264—Sensors and their calibration for indicating the position of the work tool
- E02F9/265—Sensors and their calibration for indicating the position of the work tool with follow-up actions (e.g. control signals sent to actuate the work tool)
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Agricultural Machines (AREA)
Abstract
The application discloses an engineering vehicle. The engineering vehicle comprises a frame, a working arm and an implement platform, wherein the working arm and the implement platform are arranged on the frame, and at least two implements are arranged on the implement platform. The work vehicle has an operating state and an implement change state, the relative position between the implement platform and the work arm being variably set such that the work arm is above the implement platform and corresponds to a position of an implement to be changed in at least two implements in the implement change state. The engineering vehicle is provided with the tool platform which is specially used for placing tools on the frame, and the relative position between the tool platform and the working arm can be changed, so that when tools need to be replaced, the working arm is only required to be positioned above the tool platform and corresponds to the position of the tools to be replaced, and the working arm is connected with the tools to be replaced, the tool replacement time is shortened, and the working efficiency is effectively improved. And the whole machine tool replacement process has lower requirements on the replacement site, thereby improving the applicability range of the engineering vehicle.
Description
Technical Field
The application relates to the technical field of engineering machinery, in particular to an engineering vehicle.
Background
With the development of excavator technology and the continuous innovation of tools, the working arm of the excavator can be provided with a plurality of tools such as breaking hammers, hydraulic shears, stone grabbers, tamping machines, rock saws and the like so as to meet different working demands. Typically, a work arm will work with one implement for a longer period of time after the implement is replaced without requiring frequent replacement of other implements. However, in some special cases, such as emergency rescue, the working arm needs to be frequently replaced in a short time according to different working conditions, which requires that the engineering vehicle carries multiple tools.
The various machines of engineering vehicles are mostly fixed on the frame through ropes, slings and the like, and when the machines need to be replaced, the disassembly and the assembly are needed to be completed manually, so that the operation efficiency is seriously affected, and excessive rescue time is occupied. And a plurality of machines of some engineering vehicles are also required to be equipped with special auxiliary vehicles for transportation, so that the cost is high and the application range of the engineering vehicles is reduced.
Disclosure of Invention
The application aims to provide an engineering vehicle, which is convenient for replacing tools.
The present application provides an engineering vehicle, comprising:
a frame;
the working arm is arranged on the frame; and
the working arm is arranged above the working platform and corresponds to the position of the tool to be replaced in the at least two tools in the tool replacement state.
In some embodiments, the implement platform is movably disposed relative to the frame.
In some embodiments, the implement platform is rotatably disposed about a platform pivot axis relative to the carriage, and at least two implements on the implement platform are each disposed substantially equidistant from the platform pivot axis.
In some embodiments, the work vehicle further comprises a chassis, the frame being rotatably disposed relative to the chassis about a frame pivot axis, the platform pivot axis being disposed coaxially with the frame pivot axis.
In some embodiments, the work vehicle further includes a chassis, the frame being rotatably disposed about a frame pivot axis relative to the chassis, and in the operative state, at least two of the implement and the work arm are located on opposite sides of the frame pivot axis, respectively.
In some embodiments, the work vehicle further includes a position detection sensor for detecting a position of the implement platform relative to the work arm.
In some embodiments, the work vehicle further includes a controller coupled to the position detection sensor, the controller controlling the implement platform and/or the work arm motion based on the actual position information detected by the position detection sensor and the target position information of the implement platform.
In some embodiments, the implement platform is disposed below the frame and the position detection sensor is disposed on an underside of the frame.
In some embodiments, the end of the work arm is provided with a connector for connection with the implement to be replaced.
In some embodiments, the work vehicle further comprises a display, wherein the display is configured to display actual position information of the implement platform relative to the work arm; and/or the display is used for inputting target position information of the tool platform relative to the working arm.
The engineering vehicle comprises a frame, a working arm arranged on the frame and an implement platform, wherein the implement platform is arranged on the frame and is provided with at least two implements. The work vehicle has an operating state and an implement change state, the relative position between the implement platform and the work arm being variably set such that the work arm is above the implement platform and corresponds to a position of an implement to be changed in at least two implements in the implement change state. The engineering vehicle is provided with the tool platform which is specially used for placing tools on the frame, and the relative position between the tool platform and the working arm can be changed, so that when tools need to be replaced, the working arm is only positioned above the tool platform and corresponds to the position of the tools to be replaced, and the working arm is connected with the tools to be replaced, the whole tool replacement process does not need to manually and specially detach the tools from the frame, the tool replacement time is shortened, and the working efficiency is effectively improved. And the whole machine tool replacement process has lower requirements on the replacement site, thereby improving the applicability range of the engineering vehicle.
Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the application, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a schematic view of a construction vehicle of an embodiment of the present application prior to installation of an implement;
FIG. 2 is a schematic view of a construction vehicle according to an embodiment of the present disclosure when an implement is installed;
FIG. 3 is a schematic view of a partial internal structure of an engineering vehicle according to an embodiment of the present application;
FIG. 4 is a schematic top view of the work vehicle of FIG. 2;
fig. 5 is a schematic diagram of a control principle of an engineering vehicle according to an embodiment of the present application.
Each reference numeral represents:
1. a working arm; 2. a connector; 3. a chassis; 4. a frame; 5. a tool platform; 6. a tool set; 61-a first implement; 62-a second tool; 63-a third tool; 64-fourth tool; 7. a frame swing motor; 8. a tool platform rotation motor; 9. a frame slewing bearing; 10. a tool platform slewing bearing; 11. a position detection sensor; 12. a controller; 13. a display; 14. an operating arm cylinder; 15. and an oil cylinder displacement sensor.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In the following description, the term "front" refers to the side on which the cab of the construction vehicle is located; "rear" refers to the side opposite "front".
As shown in fig. 1 to 4, the construction vehicle according to the embodiment of the present application includes:
a frame 4;
the working arm 1 is arranged on the frame 4; and
an implement platform 5, which is arranged on the frame 4 and is provided with at least two implements. The working vehicle has an operating state and an implement change state, the relative position between the implement platform 5 and the working arm 1 being variably set such that in the implement change state the working arm 1 is located above the implement platform 5 and corresponds to the position of the implement to be changed of the at least two implements.
The engineering vehicle of the embodiment of the application is provided with the tool platform 5 which is specially used for placing tools on the frame 4, and the relative position between the tool platform 5 and the working arm 1 can be changed, so that when tools need to be replaced, the working arm 1 is positioned above the tool platform 5 and corresponds to the position of the tools to be replaced, and the working arm 1 is connected with the tools to be replaced, and the whole tool replacement process does not need to manually and specially detach the tools from the frame, thereby reducing tool replacement time and effectively improving working efficiency. And the whole machine tool replacement process has lower requirements on the replacement site, thereby improving the applicability range of the engineering vehicle.
In at least one embodiment, the work vehicle further comprises a chassis 3, the frame 4 being rotatably arranged relative to the chassis 3 about a frame pivot axis. In the working state, at least two machines and the working arm 1 are respectively positioned at two opposite sides of the revolving shaft of the frame. When the engineering vehicle is in a working state, the unused machine tool is positioned at the opposite side of the working arm, so that the balance weight function is realized, the original weight device of the engineering vehicle can be omitted or part of the original weight device of the engineering vehicle can be reduced, and the self weight of the engineering vehicle can be reduced.
In at least one embodiment, the implement platform 5 is movably disposed relative to the frame 4. The tool platform 5 is movable relative to the frame 4, so that when tools need to be replaced, the tool platform 5 is directly controlled to move below the working arm 1 and move continuously until the tools to be replaced correspond to the positions of the working arm 1, and then the working arm 1 is connected with the tools to be replaced to complete the replacement of the tools.
In this embodiment, the implement platform 5 is rotatably arranged about a platform swivel axis relative to the frame 4. In embodiments not shown in the other figures, the implement platform may also be translatably arranged with respect to the carriage, for example, the implement platform is translatably arranged in a front-to-rear direction with respect to the carriage, the implement platform being translated below the work arm when an implement change is required.
Since at least two tools are placed on the tool platform 5, the working arm 1 is accurately connected with the tool to be replaced in the at least two tools, and thus, the relative position of the tool platform 5 and the working arm 1 needs to be accurately measured. In one embodiment, the work vehicle further comprises a position detection sensor 11, the position detection sensor 11 being adapted to detect the position of the implement platform 5 relative to the work arm 1.
In at least one embodiment, as shown in fig. 5, the work vehicle further includes a controller 12 coupled to the position detection sensor 11, the controller 12 controlling the movement of the implement platform 5 and/or the work arm 1 based on the actual position information detected by the position detection sensor 11 and the target position information of the implement platform 5. The working vehicle of the present embodiment performs closed-loop control on the movement of the implement platform 5 and/or the working arm 1 by the controller according to the actual position information detected by the position detection sensor, thereby improving the working efficiency. For example, the carriage 4 may be controlled to rotate relative to the chassis 3 to rotate the work arm 1 to effect a position of the work arm 1 corresponding to a position of an implement to be replaced on the implement platform 5. The rotation of the implement platform 5 relative to the frame 4 may also be controlled such that the implement platform 5 is rotated such that the position of the implement to be replaced on the implement platform 5 corresponds to the position of the work arm 1.
The construction of a construction vehicle according to an embodiment of the present application will be described in detail with reference to fig. 1 to 5.
As shown in fig. 1, the working vehicle of the present embodiment includes a chassis 3, a frame 4, a work arm 1, and an implement platform 5. An implement set 6 is placed on the implement platform 5. The implement set 6 includes at least two implements. The end of the work arm 1 is provided with a connector 2, the connector 2 being intended for connection with an implement.
As shown in fig. 1, the movement and posture of the boom 1 are controlled by a boom cylinder 14. The arm cylinder 14 of the present embodiment is further provided with a displacement sensor 15 for detecting displacement of the arm cylinder 14.
The chassis 3 of the present embodiment is a crawler chassis. In embodiments not shown in other figures, the chassis 3 may also be an automotive chassis or a wheeled chassis.
The frame 4 is rotatably arranged with respect to the chassis 3. As shown in fig. 3, the frame 4 is connected with the chassis 3 through a frame slewing bearing 9, and a frame slewing motor 7 is fixed on the frame 4 and drives the frame 4 to rotate relative to the chassis 3. Specifically, the frame rotation motor 7 may drive the frame 4 to rotate by means of gear transmission or the like.
In this embodiment, the implement platform 5 is rotatably arranged relative to the frame 4. As shown in fig. 3, the tool platform 5 is connected with the frame 4 through a tool platform slewing bearing 10, and a tool platform slewing motor 8 is fixed on the frame 4 and drives the tool platform 5 to rotate through gear transmission.
The implement platform 5 and the frame 4 of the engineering vehicle in this embodiment rotate independently of each other and do not affect each other.
The carriage 4 of the present embodiment is rotatably disposed about a carriage pivot axis with respect to the chassis 3, the implement platform 5 is rotatably disposed about an implement platform pivot axis with respect to the carriage 4, and the platform pivot axis of the present embodiment is disposed coaxially with the carriage pivot axis. The frame 4 and the tool platform 5 are coaxially rotated, so that the phenomenon that the engineering vehicle is eccentric in the working process is prevented, and the operation is stable.
Since the implement platform 5 of the present embodiment is rotationally moved about the implement platform pivot axis relative to the frame 4, in order to enable the implement platform 5 to be connected to each implement on the implement platform 5 by only the rotational movement of the implement platform 5 without moving the implement by other means, as shown in fig. 4, at least two implements on the implement platform 5 of the present embodiment are each disposed substantially equidistant from the platform pivot axis. The arrangement is such that in the process of the rotation of the tool platform 5, each tool arranged on the tool platform 5 can pass through the lower part of the working arm 1, thereby realizing the connection or the disassembly of the tools to complete the replacement work of the tools.
In at least one embodiment, the implement platform 5 is fan-shaped in shape. The machines of the machine tool group 6 are arranged at intervals on the inner side of the arc-shaped edge of the fan shape. Fig. 4 exemplarily shows that the tool set 6 of the present embodiment includes four tools, namely, a first tool 61, a second tool 62, a third tool 63 and a fourth tool 64. Specifically, each implement may be a breaking hammer, hydraulic shear, rock grab, tamper, bucket, or the like.
In this embodiment, when the working vehicle is in a working state, at least two tools and the working arm 1 are respectively located at two opposite sides of the frame pivot shaft. That is, the work arm 1 is located on the front side of the frame pivot axis, and at least two implements are located on the rear side of the frame pivot axis. The arrangement enables at least two machines to play a role of balancing the weight, so that the original weight of the engineering vehicle can be omitted or reduced, the arrangement of the engineering vehicle is simplified, and the weight of the engineering vehicle is reduced.
As shown in fig. 3, in the present embodiment, the implement platform 5 is disposed below the frame 4. The construction vehicle of the embodiment is compact in structure and easy to reform the construction vehicle with the tool platform 5 on the basis of the structure of the original construction vehicle.
Since each implement on the implement platform 5 is placed at a set position, in order to accurately connect the implement to be replaced, it is necessary to precisely control the rotation of the implement platform 5 to a position corresponding to the position of the implement to be replaced corresponding to the arm 1. In order to improve the accuracy of the rotation control of the implement platform 5, the working vehicle of the present embodiment further includes a position detection sensor 11 provided on the underside of the frame 11, the position detection sensor 11 being configured to detect the position of the implement platform 5 relative to the work arm 1.
As shown in fig. 5, the working vehicle of the present embodiment further includes a controller 12 provided in coupling with the position detection sensor 11. The controller 12 controls the movement of the implement platform 5 based on the actual position information detected by the position detection sensor 11 and the target position information of the implement platform 5.
In order to improve the visual effect of the engineering vehicle of the present embodiment, the engineering vehicle of the present embodiment further includes a display 13. The display 13 is used to display the actual position information of the implement platform 5 relative to the work arm 1. But the display 13 may also be used to input target position information of the implement platform 5 relative to the work arm 1.
The working process of the engineering vehicle of this embodiment is as follows:
if there is no implement on the connector 2 of the work arm 1, the operator first inputs a command for the implement to be connected, for example, the first implement 61 to be connected, via the display 13. First, the controller 12 performs closed-loop control on the motion of the arm cylinder 14 according to the real-time displacement of the arm cylinder 14 measured by the cylinder displacement sensor 15 so that the arm 1 is lifted to an ideal position where it does not interfere with the implement. The controller 12 further controls the frame swing motor 7 to remain stationary, and controls the tool platform swing motor 8 to drive the tool platform 5 to rotate so that the first tool 61 is located below the working arm 1, and then controls the working arm cylinder 14 to adjust the position and posture of the working arm 1 so that the connector 2 is connected with the first tool 61 and the fixing device for fixing the first tool 61 and the tool platform 5 is detached. After which the controller 12 controls the attitude of the work arm 1 to a desired state without interfering with the implement platform 5 and controls the implement platform 5 to rotate to an initial position at the rear end of the frame 4.
When an implement is disposed on the connector 2 of the working arm 1, for example, the fourth implement 64 is replaced with the second implement 62, firstly, the controller 12 controls the posture of the working arm 1 to a state that the fourth implement 64 at the end of the working arm 1 does not interfere with other implements on the implement platform 5, then controls the implement platform rotation motor 8 to drive the implement platform 5 to rotate and enable the position on the implement platform 5 for placing the fourth implement 64 to be located below the working arm 1, and the controller 12 controls the working arm 1 to place the fourth implement 64 to a set position and disconnect the connector 2 from the fourth implement 64. At this time, the controller 12 adjusts the posture of the working arm 1 again to a position that does not interfere with each tool on the tool platform 5, and then controls the tool platform rotation motor 8 to drive the tool platform 5 to rotate so that the second tool 62 is located below the working arm 1 and controls the posture of the working arm 1 so that the connector 2 at the end of the working arm 1 is connected with the second tool 62 and the fixing device of the second tool 62 and the tool platform 5 is detached. After that, the controller 12 adjusts the posture of the working arm 1 again to a state of not interfering with the tool platform 5 and then controls the tool platform rotation motor 8 to rotate to drive the tool platform 5 to return to the initial position, i.e., the rear side of the frame 4, thereby completing the replacement of the tool.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same; while the application has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present application or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the application, it is intended to cover the scope of the application as claimed.
Claims (9)
1. An engineering vehicle, comprising:
a frame (4);
a working arm (1) arranged on the frame (4); and
the working vehicle comprises an implement platform (5) which is arranged on a frame (4) and is provided with at least two implements, the engineering vehicle is provided with a working state and an implement replacement state, the relative positions of the implement platform (5) and the working arm (1) are arranged in a changeable mode, so that the working arm (1) is positioned above the implement platform (5) and corresponds to the position of the implement to be replaced in the at least two implements when the implement is in the replacement state, and the implement platform (5) is movably arranged relative to the frame (4).
2. The working vehicle according to claim 1, characterized in that the implement platform (5) is rotatably arranged about a platform swivel axis with respect to the frame (4), and that the at least two implements on the implement platform (5) are each arranged substantially equidistantly from the platform swivel axis.
3. The working vehicle according to claim 2, characterized in that the working vehicle further comprises a chassis (3), the frame (4) being rotatably arranged relative to the chassis (3) about a frame pivot axis, the platform pivot axis being arranged coaxially with the frame pivot axis.
4. The working vehicle according to claim 1, characterized in that the working vehicle further comprises a chassis (3), the frame (4) being rotatably arranged about a frame pivot axis relative to the chassis (3), the at least two implements and the working arm (1) being located on opposite sides of the frame pivot axis, respectively, in the working state.
5. The working vehicle according to any one of claims 1 to 4, characterized in that the working vehicle further comprises a position detection sensor (11), the position detection sensor (11) being adapted to detect the position of the implement platform (5) relative to the work arm (1).
6. The work vehicle according to claim 5, further comprising a controller (12) coupled to the position detection sensor (11), the controller (12) controlling the implement platform (5) and/or the work arm (1) to operate based on actual position information detected by the position detection sensor (11) and target position information of the implement platform (5).
7. The working vehicle according to claim 5, characterized in that the implement platform (5) is arranged below the frame (4), and the position detection sensor (11) is arranged on the underside of the frame (4).
8. The working vehicle according to claim 1, characterized in that the end of the working arm (1) is provided with a connector (2), which connector (2) is intended to be connected with the implement to be replaced.
9. The working vehicle according to any one of claims 1 to 4, characterized in that the working vehicle further comprises a display (13), wherein the display (13) is adapted to display actual position information of the implement platform (5) relative to the work arm (1); and/or the display (13) is used for inputting target position information of the tool platform (5) relative to the working arm (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810836559.6A CN108716230B (en) | 2018-07-26 | 2018-07-26 | engineering vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810836559.6A CN108716230B (en) | 2018-07-26 | 2018-07-26 | engineering vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN108716230A CN108716230A (en) | 2018-10-30 |
| CN108716230B true CN108716230B (en) | 2023-10-03 |
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| CN201810836559.6A Active CN108716230B (en) | 2018-07-26 | 2018-07-26 | engineering vehicle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453735A (en) * | 2019-08-14 | 2019-11-15 | 徐工集团工程机械有限公司 | A kind of mostly revolution job platform and engineering truck |
| CN111021458B (en) * | 2019-12-04 | 2022-03-15 | 徐工集团工程机械有限公司 | Intelligent control system and method for arm support type emergency rescue vehicle |
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| CN108716230A (en) | 2018-10-30 |
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