CN211448679U - Clamping manipulator of mine conveying bucket - Google Patents
Clamping manipulator of mine conveying bucket Download PDFInfo
- Publication number
- CN211448679U CN211448679U CN201922420373.5U CN201922420373U CN211448679U CN 211448679 U CN211448679 U CN 211448679U CN 201922420373 U CN201922420373 U CN 201922420373U CN 211448679 U CN211448679 U CN 211448679U
- Authority
- CN
- China
- Prior art keywords
- assembly
- rotating shaft
- pulling
- cylinder
- permanent magnet
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a clamping manipulator of a mine conveying bucket, which comprises a vertical rod assembly; the bottom of the upright rod assembly is connected with the rotating shaft component; the rotating shaft component comprises a rotating shaft which is horizontally arranged, and the rotating shaft is rotatably connected with the bottom of the vertical rod assembly; one end of the rotating shaft is connected with the speed reducer, and the other end of the rotating shaft is connected with the connecting bracket; the end part of the connecting bracket is provided with a clamping mechanism; the clamping mechanism comprises a connecting plate assembly, and a set of permanent magnet jack assembly is arranged at each of four right angles at the bottom of the connecting plate assembly; the connecting bracket is provided with a turnover component. The utility model realizes the clamping of the mine conveying bucket through the tight suction of the permanent magnet jack; through the arrangement of the overturning air cylinder, the overturning part, the speed reducer and the rotating shaft, the mine conveying hopper is adjusted to be in a suspended posture by a horizontal posture, the whole operation process is simple and convenient, the mine conveying hopper is not required to be lifted and adjusted to be suspended manually, the labor intensity is greatly reduced, and the working efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the manipulator, concretely relates to mine conveying bucket centre gripping manipulator.
Background
In the mining process of a mine, collected bulk materials such as ores and waste rocks are placed in a mine conveying hopper on a conveying line to be conveyed, wherein the mine conveying hopper is structurally shown in fig. 1 and comprises a hopper body 01, and a plurality of hanging lugs 02 are arranged at the bottom of the hopper body 01. When the mine conveying hopper is manufactured and needs to be painted or used for a period of time and needs to be cleaned, the mine conveying hopper is hung on the hook of the cross rod through the hanging lug 02 at the bottom to be suspended, so that the mine conveying hopper can be painted or cleaned comprehensively. At present, for the suspension of a mine conveying bucket, the mine conveying bucket transversely lying on the ground is lifted by the resultant force of a plurality of persons and then suspended, so that more labor is required to be consumed, the labor intensity is high, and the working efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a clamping manipulator of a mine conveying bucket.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a clamping manipulator of a mine conveying bucket comprises a vertical rod assembly connected with an upper moving mechanism;
the bottom of the upright rod assembly is connected with the rotating shaft assembly; the rotating shaft component comprises a rotating shaft which is horizontally arranged, and the rotating shaft is rotatably connected with the bottom of the vertical rod assembly; one end of the rotating shaft is connected with the speed reducer, and the other end of the rotating shaft is connected with the connecting support; the end part of the connecting bracket is provided with a clamping mechanism for clamping a mine conveying hopper;
the clamping mechanism comprises a connecting plate assembly used for being connected with the connecting support, and a set of permanent magnet jack assembly is arranged at each of four right-angle positions at the bottom of the connecting plate assembly; the permanent magnet jack component comprises a permanent magnet jack, and a pulling component for controlling the rotation of a rotating shaft on the permanent magnet jack is arranged on the permanent magnet jack;
the pulling assembly comprises a pulling cylinder, a pulling rack and a pulling gear; the pulling cylinder is fixedly arranged at one end of the permanent magnet jack through a cylinder fixing seat, the end part of a piston rod of the pulling cylinder is fixedly connected with a cylinder pushing frame, the bottom of the cylinder pushing frame is fixedly connected with a pulling rack, the bottom of the pulling rack is meshed and connected with a pulling gear, and the pulling gear is coaxially and fixedly connected with a rotating shaft of the permanent magnet jack;
the connecting support is provided with a turning assembly for controlling the clamping mechanism to turn in a vertical plane within a range of 0-90 degrees.
Preferably, the speed reducer is a planetary speed reducer.
Preferably, the rear side of the cylinder pushing frame is provided with a pulling sliding seat, and the cylinder fixing seat is provided with a pulling sliding rail which is in sliding fit with the pulling sliding seat.
Preferably, a first hinge shaft is arranged at one end, close to the vertical rod assembly, of the connecting bracket, and a second hinge shaft is arranged at one end, far away from the vertical rod assembly, of the connecting bracket;
the connecting plate assembly comprises a general connecting plate for mounting a permanent magnet jack, and the upper part of the general connecting plate is provided with an overturning part;
the overturning assembly comprises an overturning air cylinder;
the tail end of the overturning cylinder is hinged with the first hinge shaft, and the end part of a piston rod of the overturning cylinder is hinged with the upper end of the overturning part; the middle part of the turnover part is rotatably connected with the second hinge shaft, and the bottom of the turnover part is connected with the total connecting plate.
Preferably, handle components capable of lifting are arranged on two sides of the vertical rod assembly.
Preferably, a lifting cylinder is arranged on the vertical rod assembly, and a piston rod of the lifting cylinder is downwards fixedly connected with the handle assembly.
Preferably, one side of the handle component close to the vertical rod assembly is provided with a handle bracket, and the handle brackets at the two sides are fixedly connected through a lifting connecting plate; a piston rod of the lifting cylinder is downwards fixedly connected with the handle bracket on one side of the lifting cylinder; the handle bracket is provided with a lifting slide seat;
and lifting slide rails which are in sliding fit with the corresponding lifting slide seats are arranged on two sides of the vertical rod assembly.
The utility model has the advantages that:
the clamping manipulator of the mine conveying bucket of the utility model clamps the mine conveying bucket through the tight suction of the permanent magnet jack; through upset cylinder, the upset piece set up realize fixture around the rotation of second articulated shaft in order to realize fixture's upset action, through the speed reducer, the setting of rotation axis realizes fixture around the rotation of rotation axis in order to realize fixture's rotation action, and then realized adjusting the posture of hanging for being convenient for by the gesture of lying with mine transport bucket, whole operation process is simple and convenient, and no longer need the manual work to lift up the adjustment and hang, greatly reduced intensity of labour, improved work efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic perspective view of a mine conveyor;
FIG. 2 is a schematic perspective view of the clamping manipulator of the mine conveying bucket of the present invention;
FIG. 3 is a right side view of the clamping manipulator of the mine conveying bucket;
FIG. 4 is a schematic view of the permanent magnet jack assembly of the present invention;
FIG. 5 is a schematic perspective view of the rotation shaft assembly, the connection plate assembly and the turnover assembly of the present invention;
FIG. 6 is a schematic structural view of the clamping manipulator of the mine conveying bucket of the present invention clamping the mine conveying bucket;
wherein:
01-bucket body, 02-hanging ear;
1-upright rod assembly, 101-lifting cylinder, 102-lifting slide rail;
2-rotation axis assembly, 201-rotation axis, 202-speed reducer, 203-connecting bracket, 204-first hinge axis, 205-second hinge axis;
3-connecting plate component, 301-total connecting plate, 302-turnover component, 303-connecting seat;
4-permanent magnet jack component, 401-permanent magnet jack, 402-pulling cylinder, 403-pulling rack, 404-pulling gear, 405-cylinder fixing seat, 406-cylinder pushing frame, 407-pulling slide seat, 408-pulling slide rail, 409-connecting lug plate;
5-overturning the assembly, 501-overturning the cylinder;
6-handle component, 601-handle bracket, 602-lifting connecting plate, 603-lifting slide seat;
the rate of rotation is not greater than about a,
and (4) rotating rightwards.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, the terms such as "upper", "lower", "bottom", "top" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and the relationship term determined only for the convenience of describing the structural relationship of each component or element of the present invention is not particularly referred to any component or element of the present invention, and the limitation of the present invention cannot be understood.
In the present invention, terms such as "connected" and "connected" should be understood in a broad sense, and may be either fixedly connected or integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 2-3, a clamping manipulator of a mine conveying bucket comprises a vertical rod assembly 1 connected with an upper moving mechanism, wherein the moving mechanism is a device capable of driving the manipulator to lift and move transversely, specifically, a crane or a movable balance crane can be adopted, and the moving mechanism can be realized by adopting the prior art, so the specific structure is not repeated;
the bottom of the upright rod assembly 1 is connected with the rotating shaft component 2; the rotating shaft component 2 comprises a rotating shaft 201 which is horizontally arranged, and the rotating shaft 201 is rotatably connected with the bottom of the vertical rod assembly 1; one end of the rotating shaft 201 is connected with a speed reducer 202, and the other end of the rotating shaft 202 is connected with a connecting bracket 203; the end part of the connecting bracket 203 is provided with a clamping mechanism for clamping a mine conveying bucket; the rotation action of the clamping mechanism around the rotating shaft 201 is realized through the arrangement of the speed reducer 202, wherein the clamping mechanism can rotate leftwards or rightwards within the range of 0-180 degrees around the rotating shaft 201;
the clamping mechanism comprises a connecting plate component 3 used for being connected with the connecting bracket 203, and a set of permanent magnet jack component 4 is arranged at each of four right-angle positions at the bottom of the connecting plate component 3; as shown in fig. 4, the permanent magnet jack assembly 4 includes a permanent magnet jack 401, clamping of the mine conveying bucket is realized by the suction force of the permanent magnet jack 401, and a pulling assembly for controlling the rotation of a rotating shaft on the permanent magnet jack 401 is arranged on the permanent magnet jack 401;
the pulling assembly comprises a pulling cylinder 402, a pulling rack 403 and a pulling gear 404; the pulling cylinder 402 is fixedly arranged at one end of the permanent magnet jack 401 through a cylinder fixing seat 405, the end part of a piston rod of the pulling cylinder 402 is fixedly connected with a cylinder pushing frame 406, the bottom of the cylinder pushing frame 406 is fixedly connected with a pulling rack 403, the bottom of the pulling rack 403 is meshed and connected with a pulling gear 404, and the pulling gear 404 is coaxially and fixedly connected with a rotating shaft of the permanent magnet jack 401;
in the existing permanent magnet jack, a rotating shaft is provided with a handle, the rotating shaft is driven to rotate through the handle to change magnetic lines of force, so that the jack is in a working or closing state, a pulling assembly is adopted by the manipulator to replace the handle, the handle is not required to be turned manually to realize the starting or closing of the permanent magnet jack, and a pulling cylinder 402 is adopted to realize the starting or closing of the permanent magnet jack 401;
the connecting bracket 203 is provided with a turning assembly 5 for controlling the clamping mechanism to turn in a vertical plane within the range of 0-90 degrees; under the general condition, mine conveying fill can be as shown in fig. 1 lying on the ground transversely, and the bottom plate that is provided with hangers 02 this moment is towards one side, and when this application manipulator used, at first made permanent magnetism jack 401 hold its bottom plate, then made fixture overturn 90 downwards through upset subassembly 5 to drive mine conveying fill overturn 90 downwards, thus make mine conveying fill's bottom plate overturn up, as shown in fig. 6.
Preferably, the speed reducer 202 is a planetary speed reducer.
Preferably, a pulling slide seat 407 is disposed at the rear side of the cylinder pushing frame 406, and a pulling slide rail 408 slidably engaged with the pulling slide seat 407 is disposed on the cylinder fixing seat 405.
Preferably, as shown in fig. 5, one end of the connecting bracket 203 close to the vertical rod assembly 1 is provided with a first hinge shaft 204, and one end of the connecting bracket 203 far from the vertical rod assembly 1 is provided with a second hinge shaft 205;
the connection plate assembly 3 comprises a general connection plate 301 for mounting a permanent magnet jack 401, and the upper part of the general connection plate 301 is provided with an overturning piece 302; connecting seats 303 are arranged at four right-angle positions of the bottom of the main mounting plate 301, connecting lug plates 409 are arranged at the tops of the permanent magnet jacks 401, and the connecting lug plates 409 are connected with connecting shafts on the corresponding connecting seats 303;
the overturning assembly 5 comprises an overturning air cylinder 501;
the tail end of the overturning cylinder 501 is hinged with the first hinge shaft 204, and the end part of the piston rod of the overturning cylinder 501 is hinged with the upper end of the overturning part 302; the middle portion of the flip member 302 is rotatably coupled to the second hinge shaft 205, and the bottom portion of the flip member 302 is coupled to the main coupling plate.
Through the arrangement of the overturning air cylinder 501 and the overturning piece 302, the function that the clamping mechanism rotates around the second hinge shaft 205 in the vertical plane is realized.
Preferably, the both sides of pole setting assembly 1 are provided with the handle components 6 that can go up and down, wherein be provided with on the handle components 6 and control the loading button, the uninstallation button of pulling cylinder 402 in order to realize that permanent magnetism jack 401 inhales tightly, loosens to and control upset cylinder 501 in order to realize fixture upset, the upset button that resets, reset the button, and control speed reducer 202 in order to realize the left-handed button, the dextrorotation button of fixture levogyration, dextrorotation.
Preferably, a lifting cylinder 101 is arranged on the vertical rod assembly 1, and a piston rod of the lifting cylinder 101 is downwards fixedly connected with the handle component 6.
Preferably, a handle bracket 601 is arranged on one side of the handle assembly 6 close to the vertical rod assembly 1, and the handle brackets 601 on the two sides are fixedly connected through a lifting connecting plate 602; a piston rod of the lifting cylinder 101 is downwards fixedly connected with the handle bracket 601 at one side; a lifting slide seat 603 is arranged on the handle bracket 601;
the two sides of the vertical rod assembly 1 are provided with lifting slide rails 102 which are in sliding fit with the corresponding lifting slide seats 603.
The utility model provides a mine conveying bucket centre gripping manipulator, its embodiment as follows:
typically, the mine bucket will lie across the ground as shown in figure 1, with the base plate on which the lugs 02 are located facing one side.
At this time, the pulling cylinder 402 is firstly started, and under the transmission coordination of the pulling rack 403 and the pulling gear 404, the rotating shaft of the permanent magnet jack 401 is driven to rotate so that the permanent magnet jack 401 tightly sucks the bottom plate of the mine conveying bucket;
then, the overturning cylinder 501 is started to extend a piston rod of the overturning cylinder 501, the piston rod of the overturning cylinder 501 drives the upper end of the overturning part 302 to rotate anticlockwise around the second hinge shaft 205, so that the lower end of the overturning part 302 drives the permanent magnet jack component 4 tightly sucking the mine conveying bucket to overturn downwards around the second hinge shaft 205 anticlockwise until the bottom plate of the mine conveying bucket is turned upwards, as shown in fig. 6;
then, the speed reducer 202 is started to rotate the rotating shaft 201, when the rotating shaft 201 rotates leftwards as shown in fig. 5, the mine conveying hopper in the state shown in fig. 6 rotates leftwards, the bottom plate of the mine conveying hopper rotates to face the left side, and at the moment, under the action of the upper moving mechanism, the hanging lugs 02 on the mine conveying hopper are hung on the hanging hooks of the cross bars on the left side, so that the suspension of the mine conveying hopper is realized; when the rotating shaft 201 rotates rightwards as shown in fig. 5, the mine conveying hopper in the state shown in fig. 6 rotates rightwards, the bottom plate of the mine conveying hopper rotates to face the right side, and at the moment, under the action of the upper moving mechanism, the hanging lug 02 on the mine conveying hopper is hung on the hanging hook of the cross rod on the right side, so that the suspension of the mine conveying hopper is realized;
after the mine conveying bucket is suspended, pulling the air cylinder 402 to reset, closing the permanent magnet jack 401, and not tightly sucking the bottom plate of the mine conveying bucket; meanwhile, the speed reducer 202 and the overturning cylinder 501 drive the clamping mechanism to reset so as to wait for the clamping operation of the next mine conveying bucket.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the present invention, and those skilled in the art should understand that, based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without inventive labor are still within the scope of the present invention.
Claims (7)
1. A clamping manipulator of a mine conveying bucket is characterized by comprising a vertical rod assembly connected with an upper moving mechanism;
the bottom of the upright rod assembly is connected with the rotating shaft assembly; the rotating shaft component comprises a rotating shaft which is horizontally arranged, and the rotating shaft is rotatably connected with the bottom of the vertical rod assembly; one end of the rotating shaft is connected with the speed reducer, and the other end of the rotating shaft is connected with the connecting support; the end part of the connecting bracket is provided with a clamping mechanism for clamping a mine conveying hopper;
the clamping mechanism comprises a connecting plate assembly used for being connected with the connecting support, and a set of permanent magnet jack assembly is arranged at each of four right-angle positions at the bottom of the connecting plate assembly; the permanent magnet jack component comprises a permanent magnet jack, and a pulling component for controlling the rotation of a rotating shaft on the permanent magnet jack is arranged on the permanent magnet jack;
the pulling assembly comprises a pulling cylinder, a pulling rack and a pulling gear; the pulling cylinder is fixedly arranged at one end of the permanent magnet jack through a cylinder fixing seat, the end part of a piston rod of the pulling cylinder is fixedly connected with a cylinder pushing frame, the bottom of the cylinder pushing frame is fixedly connected with a pulling rack, the bottom of the pulling rack is meshed and connected with a pulling gear, and the pulling gear is coaxially and fixedly connected with a rotating shaft of the permanent magnet jack;
the connecting support is provided with a turning assembly for controlling the clamping mechanism to turn in a vertical plane within a range of 0-90 degrees.
2. The mine conveying bucket clamping robot of claim 1, wherein the reducer is a planetary reducer.
3. The mining conveying bucket clamping manipulator as claimed in claim 1, wherein a pulling slide seat is arranged at the rear side of the air cylinder pushing frame, and a pulling slide rail which is in sliding fit with the pulling slide seat is arranged on the air cylinder fixing seat.
4. The mining conveying bucket clamping manipulator as claimed in claim 1, wherein one end of the connecting bracket, which is close to the vertical rod assembly, is provided with a first articulated shaft, and one end of the connecting bracket, which is far from the vertical rod assembly, is provided with a second articulated shaft;
the connecting plate assembly comprises a general connecting plate for mounting a permanent magnet jack, and the upper part of the general connecting plate is provided with an overturning part;
the overturning assembly comprises an overturning air cylinder;
the tail end of the overturning cylinder is hinged with the first hinge shaft, and the end part of a piston rod of the overturning cylinder is hinged with the upper end of the overturning part; the middle part of the turnover part is rotatably connected with the second hinge shaft, and the bottom of the turnover part is connected with the total connecting plate.
5. The mining conveyor bucket gripping manipulator of claim 1, wherein the mast assembly is provided with lifting handle assemblies on both sides.
6. The clamping manipulator for the mine conveying bucket as claimed in claim 5, wherein a lifting cylinder is arranged on the vertical rod assembly, and a piston rod of the lifting cylinder is downwards fixedly connected with the handle assembly.
7. The clamping manipulator for the mine conveying bucket as claimed in claim 6, wherein a handle bracket is arranged on one side of the handle component close to the vertical rod assembly, and the handle brackets on the two sides are fixedly connected through a lifting connecting plate; a piston rod of the lifting cylinder is downwards fixedly connected with the handle bracket on one side of the lifting cylinder; the handle bracket is provided with a lifting slide seat;
and lifting slide rails which are in sliding fit with the corresponding lifting slide seats are arranged on two sides of the vertical rod assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922420373.5U CN211448679U (en) | 2019-12-30 | 2019-12-30 | Clamping manipulator of mine conveying bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922420373.5U CN211448679U (en) | 2019-12-30 | 2019-12-30 | Clamping manipulator of mine conveying bucket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211448679U true CN211448679U (en) | 2020-09-08 |
Family
ID=72314818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922420373.5U Active CN211448679U (en) | 2019-12-30 | 2019-12-30 | Clamping manipulator of mine conveying bucket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211448679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267842A (en) * | 2020-10-23 | 2021-01-26 | 中煤科工集团西安研究院有限公司 | Mining high-precision hydraulic permanent magnet drill rod grabbing device |
-
2019
- 2019-12-30 CN CN201922420373.5U patent/CN211448679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267842A (en) * | 2020-10-23 | 2021-01-26 | 中煤科工集团西安研究院有限公司 | Mining high-precision hydraulic permanent magnet drill rod grabbing device |
| CN112267842B (en) * | 2020-10-23 | 2022-08-19 | 中煤科工集团西安研究院有限公司 | Mining high accuracy permanent magnetism drilling rod grabbing device that surges |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210914377U (en) | Hoisting and overturning device suitable for glass plates of different sizes | |
| CN211448679U (en) | Clamping manipulator of mine conveying bucket | |
| CN105347171A (en) | Large-sized building block lifting appliance | |
| CN113608377A (en) | Turnover mechanism for laminating processing of liquid crystal display screen and working method thereof | |
| CN106429904A (en) | Autobalance crane | |
| CN205472265U (en) | Overhead hoisting remote control anchor clamps | |
| CN211733062U (en) | Workpiece feeding and discharging device used on workpiece coating and baking assembly line | |
| CN113401787A (en) | Jacking type lifting anti-swing gantry container crane | |
| CN211687361U (en) | A transmission structure for ceramic brick is automatic turns | |
| CN218698948U (en) | Gripping device | |
| CN112010191A (en) | Marine diesel engine production painting system | |
| CN217050647U (en) | Double-glass multi-cavity hollow glass manipulator | |
| CN110509250A (en) | A kind of crawl robot with carrying positioning function | |
| CN214359703U (en) | Magnetic jack for material handling | |
| CN210968948U (en) | Mechanical arm for palletizing robot | |
| CN213202079U (en) | Artificial granite plate body vanning lifting appliance | |
| CN210173604U (en) | Rotary manipulator feeding and discharging device | |
| CN208263147U (en) | A kind of mould turnover mechanism and stake mould tipper | |
| CN210825066U (en) | Clamping device and hoisting system | |
| CN209226421U (en) | Flexible sucker suspender may be reversed | |
| CN201846951U (en) | Hand-operated lifting side arm umbrella | |
| CN206608116U (en) | Sucker rod running and pulling device and sucker rod remove system | |
| CN219906819U (en) | Electric hoist suitable for hoisting pipeline | |
| CN210944528U (en) | Ring flange stone tongs | |
| CN203865849U (en) | Clamping assembly for crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |