CN111946378A - Light electric bracket for coal mine - Google Patents
Light electric bracket for coal mine Download PDFInfo
- Publication number
- CN111946378A CN111946378A CN202010742387.3A CN202010742387A CN111946378A CN 111946378 A CN111946378 A CN 111946378A CN 202010742387 A CN202010742387 A CN 202010742387A CN 111946378 A CN111946378 A CN 111946378A
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- Prior art keywords
- support
- light
- pivotally connected
- top beam
- driving device
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- 239000003245 coal Substances 0.000 title claims abstract description 47
- 239000002861 polymer material Substances 0.000 claims abstract description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 12
- 230000007246 mechanism Effects 0.000 description 8
- 238000005065 mining Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 229920000049 Carbon (fiber) Polymers 0.000 description 5
- 239000004917 carbon fiber Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000005520 electrodynamics Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010878 waste rock Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 238000013433 optimization analysis Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Transmission Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The application discloses light-duty electric stand for coal mine includes: the pushing device is used for driving the light electric bracket for the coal mine to advance; the top beam can be lifted relative to the ground, wherein a plurality of grooves filled with high polymer materials are formed in the top beam; braced frame, braced frame include two sets of support frames of arranging side by side, and every group support frame includes: a base plate; the driving device is telescopic, one end of the driving device is connected with the bottom plate in a pivoting manner, and the other end of the driving device is connected with the top beam in a pivoting manner; the shield beam is pivotally connected with the top beam; and one end of the connecting rod is pivotally connected with the shield beam, and the other end of the connecting rod is pivotally connected with the bottom plate. The embodiment of the application can realize the braced frame of frame form to being provided with on the back timber and having filled a plurality of recesses that are used for reducing the coefficient of friction and the macromolecular material who lightens weight, reducing support weight realizes the purpose of light-duty design, effectively guarantees the accuracy nature and the real-time of control, promotes to use and experiences.
Description
Technical Field
The application relates to the technical field of automatic control, in particular to a light electric support for a coal mine.
Background
At present, in the coal mining process, due to the limitation of space, staff on a working face are difficult to enter, and therefore a support is required to independently complete related actions so as to be matched with a coal mining machine to realize automatic coal mining on the working face.
However, in order to guarantee sufficient support intensity, the top beam, the shield beam and the bottom plate of the existing hydraulic support all adopt thicker steel plates, so that the whole weight of the support is heavier, the friction resistance is larger in the process of pushing the support, the action response of the support is delayed, the control precision of the hydraulic cylinder cannot be effectively guaranteed, and the existing support structure needs to be improved urgently.
Content of application
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide the light electric support for the coal mine, which can reduce the weight of the support, realize the purpose of light design, effectively ensure the accuracy and the real-time performance of control and improve the use experience.
In order to achieve the above object, an embodiment of the present application provides a light electric bracket for a coal mine, including:
the pushing device is used for driving the light electric bracket for the coal mine to advance;
the top beam can be lifted relative to the ground, wherein a plurality of grooves filled with high polymer materials are formed in the top beam;
a support frame, support frame includes two sets of support frames arranged side by side, every group the support frame includes:
a base plate;
the driving device is telescopic, one end of the driving device is pivotally connected with the bottom plate, and the other end of the driving device is pivotally connected with the top beam;
the shield beam is pivotally connected with the top beam;
and one end of the connecting rod is pivotally connected with the shield beam, and the other end of the connecting rod is pivotally connected with the bottom plate.
According to light-duty electric support for coal mine of this application embodiment, through the braced frame of design frame form to be provided with on the back timber and fill a plurality of recesses that are used for reducing coefficient of friction and the macromolecular material who lightens weight, reduce the weight of support, realize the purpose of light-duty design, and effectively guarantee the accuracy nature and the real-time of control, promote to use and experience.
In addition, the light electric bracket for the coal mine according to the embodiment of the invention can also have the following additional technical characteristics:
optionally, in an embodiment of the present application, in each set of the support frames, the connecting rod includes a plurality of sub-connecting rods spaced apart in the traveling direction of the floor, and both ends of the sub-connecting rods are pivotally connected to the shield beam and the floor, respectively.
Optionally, in an embodiment of the present application, the sub-connecting rod adjacent to the driving device is a bent rod structure.
Optionally, in an embodiment of the present application, the sub-connecting rod away from the driving device is a straight rod structure.
Optionally, in an embodiment of the present application, both ends of the sub-connecting rod remote from the driving device are connected to the ends of the floor panel and the shield beam, respectively.
Optionally, in an embodiment of the present application, the driving device includes:
a first support cylinder;
the first oil supply device and the first oil cylinder are coaxially arranged and then arranged on the outer side of the first supporting oil cylinder.
Optionally, in an embodiment of the present application, the method further includes:
one end of the electric balancing rod is connected with the top beam in a pivoting mode, and the other end of the electric balancing rod is connected with the sub connecting rod adjacent to the driving device in a pivoting mode.
Optionally, in an embodiment of the present application, the driving device includes:
a second support cylinder;
the second oil supply device and the second oil cylinder are coaxially arranged and then arranged on the outer side of the second supporting oil cylinder.
Optionally, in an embodiment of the present application, the plurality of grooves are arranged in a honeycomb shape.
Optionally, in an embodiment of the present application, a depth of each groove of the plurality of grooves is a preset value, or the depths of the plurality of grooves decrease in a gradient manner along the other side with the shield beam side.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural diagram of a hydraulic support for a coal mine in the related art;
FIG. 2 is a schematic structural diagram of a light electric bracket for coal mines, provided according to an embodiment of the application;
FIG. 3 is a schematic top view of the top beam of a light electric bracket for coal mine according to an embodiment of the application;
fig. 4 is a schematic overall effect diagram of a light electric bracket for coal mines, provided according to an embodiment of the application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
Before describing the light electric bracket for coal mine according to the embodiment of the present application, the following briefly describes the drawbacks of the prior art.
In the related art, as shown in fig. 1, a large-flow emulsion pump station and a hydraulic cylinder are mostly adopted as an action executing mechanism in the conventional hydraulic support for the coal mine, and the functions of lowering, moving, lifting, pushing and the like of the support are realized by utilizing the extension and retraction of the hydraulic cylinder.
However, in order to ensure sufficient supporting strength, the top beam, the shield beam and the bottom plate of the existing hydraulic support are made of thicker steel plates, so that the overall weight of the support is heavier, generally more than 10t, the friction resistance is larger in the pushing process of the support, especially, the pushing distance and the lifting posture of the support are controlled by electrohydraulic valves mostly, the action response of the support is delayed due to certain hysteresis of large-flow emulsion in the circulating process of a valve control system, the control precision of a hydraulic cylinder cannot be effectively ensured, if the hydraulic support automatically completes one-time pushing and pulling process in the existing control technology, the pushing distance deviation exceeds 10cm, and the time delay is more than 12 s. That is, the servo electric cylinder is used to control the posture and the push-pull displacement of the hydraulic bracket, and although the push speed and the control accuracy can be greatly improved, the push resistance and the support resistance cannot be too large, so that the improvement of the conventional bracket structure is urgently needed.
The application is based on the above problems, and provides a light electric bracket for coal mines.
The light electric bracket for coal mine according to the embodiment of the invention is described below with reference to the attached drawings.
Specifically, fig. 2 is a schematic structural diagram of a light electric bracket for coal mines according to an embodiment of the present disclosure.
As shown in fig. 2, the lightweight electric stand for coal mine includes: pusher shoe 100, cap 200 and support frame 300 (not specifically identified in the figures). Wherein each set of support frames of the support frame 300 includes: bottom plate 301, drive arrangement 302, shield beam 303, connecting rod 304.
Specifically, the pushing device 100 is used for driving a light electric bracket for a coal mine to advance.
In some examples, the pushing device 100 can be, but is not limited to, driving a light electric support for a coal mine to advance, for example, when the support needs to autonomously complete a forward movement or a backward movement, the support is pushed by the pushing device 100 to move, and the working efficiency and the control accuracy of the pushing support are ensured.
The top beam 200 is capable of lifting relative to the ground, wherein a plurality of grooves filled with high polymer materials are arranged on the top beam 200.
In some examples, for the back timber setting among the prior art, the back timber 200 of this application embodiment is for filling the recess design that reduces coefficient of friction and weight reduction, and it is light-duty back timber (will specifically explain below), and back timber 200 sets up to liftable for ground to effectively satisfy the light-duty support demand for the coal mine, improve the suitability and the practicality of support, guarantee the work efficiency and the reliability of coal seam mining, it is simple convenient, and easy the realization.
A support frame 300, the support frame 300 comprising two sets of support brackets arranged side by side.
It can be understood that, for the heavier technical problem of the whole weight of support among the solution correlation technique, this application embodiment has designed the braced frame of frame form, reduces weight, and light-duty design realizes not only reducing the support at the frictional resistance who passes the process to the practical improvement of supporting structure, effectively guarantees the control accuracy, guarantees the functional of support moreover, and is simply easily realized.
Wherein, as shown in fig. 2, each group of support frames comprises:
a driving device 302, wherein the driving device 302 is telescopic and one end of the driving device 302 is pivotally connected with the bottom plate 301, and the other end of the driving device 302 is pivotally connected with the top beam 200.
For example, the driving device 302 is a supporting upright, and the length control is realized by telescoping a plurality of built-in columns, and the height and/or inclination angle of the top beam 200 can be adjusted while the top beam 200 is fixedly supported by the bottom plate 301.
A shield beam 303, the shield beam 303 being pivotally connected to the roof beam 200.
It will be appreciated that the shield beam 303 can transfer part of the roof pressure received by the roof beam 200 to the base via the connecting rods or joints, and that for example a movable skirt may be provided on the shield beam 303 to further improve the above-mentioned functions, which mainly serve the connecting and shielding functions.
And is able to withstand the pressure of the caving gangue in the goaf and transfer it to the roof beam, the connecting rods described below, and the base, i.e. the floor 301.
Specifically, the function of the shield beam 303 is:
1) the horizontal component force and the lateral force given by the top plate are borne, and the torsion resistance of the bracket is enhanced;
2) the shield beam, the front connecting rod, the rear connecting rod and the base form a four-connecting-rod mechanism, so that the change of the beam end distance is small;
3) bear the pressure given by the waste rock in the old pond, prevent the vertical column from the load of transverse bending, block the coal fall and the waste rock from channeling forward in the rear part, and maintain the working space.
A connecting rod 304, one end of the connecting rod 304 being pivotally connected to the shield beam 303 and the other end being pivotally connected to the floor panel 301.
Alternatively, in one embodiment of the present application, as shown in fig. 2, in each set of support frames, the connecting rod 304 may include a plurality of sub-connecting rods spaced apart in the traveling direction of the floor 301, both ends of the sub-connecting rods may be pivotally connected to the shelter beam 303 and the floor 201, respectively, and the sub-connecting rods adjacent to the driving device 302 may be of a bent rod structure, while the sub-connecting rods far from the driving device 302 may be of a straight rod structure, and both ends of the sub-connecting rods far from the driving device 302 may be connected to the ends of the floor 301 and the shelter beam 303, respectively.
It will be appreciated that the tie rods 304 are used to achieve rules of motion in coal mining. For example, when the motion law of the driving rod is fixed, the driven rod correspondingly moves according to the given motion law, so as to realize a certain track and coal mining action, and a common link mechanism includes: the crank rocker mechanism, the double crank mechanism, the double rocker mechanism, the four-bar mechanism for hanging the sliding block, the multi-bar mechanism and the like, the connecting rods in fig. 2 are only schematic, and the application is not limited to the connecting mode.
It can be understood based on the above description of the related embodiments that all the execution actions of the support of the embodiment of the present application can be completed by motor drive control, and an external hydraulic oil pipe is not required, so that the accuracy of control is effectively improved, the weight of the support is reduced, and the support is more convenient and automatic.
Optionally, in an embodiment of the present application, the driving device 302 includes: the first support oil cylinder, the first oil supply device and the first oil cylinder.
Wherein, establish the outside at first support cylinder after first oil supply unit and first hydro-cylinder coaxial arrangement.
Optionally, in an embodiment of the present application, the driving device includes: the second support oil cylinder, the second oil supply device and the second oil cylinder.
The second oil supply device and the second oil cylinder are coaxially arranged and then are arranged on the outer side of the second supporting oil cylinder.
Particularly, in the actual implementation process, the outside of the driving device 302 may be provided with an independent oil supply device, for example, the oil pump is driven by a high-speed motor to realize the lifting oil supply of the stand column, so that the space occupation ratio of the oil supply device is reduced, and the oil supply device is designed to be coaxially sleeved outside the supporting oil cylinder, and is not specifically limited herein, thereby ensuring the sufficient supporting strength and effectively meeting the functional requirements of the support.
Optionally, in an embodiment of the present application, the light electric bracket for a coal mine of the embodiment of the present application further includes: the electrodynamic balance bar 400.
Wherein one end of the electric stabilizer bar 400 is pivotably connected to the header bar 200 and the other end of the electric stabilizer bar 400 is pivotably connected to the sub-connecting bar adjacent to the driving means 302.
For example, the electrodynamic balance bar 400 may be an electrical balance device, such as may act to reduce roll of the brace, and/or to achieve force transfer.
Optionally, in an embodiment of the present application, the plurality of grooves are arranged in a honeycomb shape.
The lightweight header is specifically illustrated herein. It should be understood by those skilled in the art that the embodiment of the present application further has a hollow design for the top beam 200 for the purpose of further solving the problem of the heavy overall weight of the bracket in the related art and realizing a light concept. In some examples, as shown in fig. 3, in order to reduce the weight of the support and reduce the power and volume of the electric drive device, the top beam 200 of the support is designed to be specially hollowed, and a light polymer material such as a carbon fiber material is filled in the middle of the top beam, so that the support strength is met, the friction coefficient between the support and the coal wall is reduced, the use requirement of a working surface is met, the overall weight of the support is light, the friction resistance is small, and the pushing speed and the control precision are effectively improved.
For example, compare in prior art, after having set up the recess that is filled with carbon fiber material, because having of carbon fiber is high temperature resistant, antifriction, electrically conductive, heat conduction and corrosion-resistant etc. characteristics, and the density of carbon fiber is little, consequently than intensity and specific modulus height, structural characteristic through the carbon atom range, make the support of this application embodiment when guaranteeing to support intensity, further reduce coefficient of friction, be favorable to the transportation of coal, and effectively reduce the frictional resistance who removes the drawer process, when effectively cooperating the coal-winning machine and realizing the automatic coal mining of working face, promote the flexibility and the functionality of support, guarantee coal mining efficiency.
Although the carbon fiber is taken as an example in the above section, it should be understood by those skilled in the art that the material that can reduce the friction coefficient or reduce the weight while ensuring the strength is not specifically limited in this application.
It should be noted that the hollow design may be, but not limited to, a honeycomb design, and the number or arrangement of the lightening holes may be designed by those skilled in the art according to actual situations, which is not specifically limited herein.
Optionally, in another embodiment of the present application, a depth of each groove of the plurality of grooves is a preset value, or the depths of the plurality of grooves decrease in a gradient manner along the other side with the shield beam side.
In the embodiment of the present application, the depth of the groove may be a fixed value set by a person skilled in the art according to actual conditions as shown in the drawing, but the depth is only for illustrative purposes, and the depth is not limited thereto, for example, the optimal depth arrangement scheme of the groove may be obtained through experience or experimental setting of the person skilled in the art, so as to ensure that the top beam is lightest, reduce the friction coefficient, and effectively reduce the friction resistance
In addition, as shown in fig. 4, the design method of the space grid structure adopted between the shield beam 303, the electric balance bar 400, the connecting rod 304 and the bottom plate 301 can utilize finite element analysis software to perform optimization analysis on the position of the hinge point and the shape of the connecting rod, so as to accurately obtain the optimal hinge position and the optimal value of the thickness of the connecting rod, thereby ensuring that the support is stably supported and simultaneously achieving the lightest structural weight of the support.
To sum up, the support of this application embodiment is when removing, pusher jack 100 can adopt the theory of operation of electronic lead screw, it is rotatory fast to drive the lead screw through high-speed motor, realize the purpose of the quick accurate removal of support, and effectively alleviate the weight of support, make under the confined space electric lead screw's thrust have the time limit, the support can be at certain within range with its frictional resistance control to the surrounding environment dragging the in-process, thereby guarantee to pass speed and control accuracy, and be provided with on the back timber and fill and have a plurality of recesses that are used for reducing the coefficient of friction and the macromolecular material who lightens weight, therefore, because the whole weight of support is heavier among the relevant technology has been solved, lead to the control accuracy can't effectively be guaranteed, and pass apart from technical problem such as the deviation is great.
According to the light-duty electric support for coal mine of this application embodiment, through the braced frame of design frame form, reduce the weight of support, realize the purpose of light-duty design to effectively guarantee the accuracy nature and the real-time of control, promote to use and experience.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Claims (10)
1. The utility model provides a light-duty electronic support for coal mine which characterized in that includes:
the pushing device is used for driving the light electric bracket for the coal mine to advance;
the top beam can be lifted relative to the ground, wherein a plurality of grooves filled with high polymer materials are formed in the top beam;
a support frame, support frame includes two sets of support frames arranged side by side, every group the support frame includes:
a base plate;
the driving device is telescopic, one end of the driving device is pivotally connected with the bottom plate, and the other end of the driving device is pivotally connected with the top beam;
the shield beam is pivotally connected with the top beam;
and one end of the connecting rod is pivotally connected with the shield beam, and the other end of the connecting rod is pivotally connected with the bottom plate.
2. A light-weight electric support for coal mines as set forth in claim 1, wherein in each set of support brackets, the connecting rods comprise a plurality of sub-connecting rods spaced apart in the direction of travel of the floor, and both ends of the sub-connecting rods are pivotally connected to the shield beam and the floor, respectively.
3. A light-duty powered support for coal mines as set forth in claim 2, wherein said sub-connecting rods adjacent to said drive means are of bent rod construction.
4. A light-duty powered support for coal mines as set forth in claim 2, wherein said sub-connecting rod remote from said drive means is of a straight rod construction.
5. A light-weight electric support for coal mines as set forth in claim 2, wherein both ends of the sub-connecting rod remote from the driving unit are connected to the ends of the floor panel and the shield beam, respectively.
6. A light-weight electric support for coal mines as set forth in claim 1, wherein the driving means comprises:
a first support cylinder;
the first oil supply device and the first oil cylinder are coaxially arranged and then arranged on the outer side of the first supporting oil cylinder.
7. A light-duty powered support for coal mines as set forth in claim 1, further including:
one end of the electric balancing rod is connected with the top beam in a pivoting mode, and the other end of the electric balancing rod is connected with the sub connecting rod adjacent to the driving device in a pivoting mode.
8. A light-weight electric support for coal mines as set forth in claim 7, wherein the driving means comprises:
a second support cylinder;
the second oil supply device and the second oil cylinder are coaxially arranged and then arranged on the outer side of the second supporting oil cylinder.
9. A light-duty powered coal mine support as claimed in claim 1, wherein said plurality of pockets are arranged in a honeycomb pattern.
10. A light-weight electric support for coal mines as set forth in claim 1, wherein the depth of each of the plurality of grooves is a predetermined value or the depth of the plurality of grooves decreases in a gradient along the shield beam side along the other side.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742387.3A CN111946378B (en) | 2020-07-29 | 2020-07-29 | Light electric bracket for coal mine |
| PCT/CN2021/097772 WO2022022056A1 (en) | 2020-07-29 | 2021-06-01 | Light electric support for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010742387.3A CN111946378B (en) | 2020-07-29 | 2020-07-29 | Light electric bracket for coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111946378A true CN111946378A (en) | 2020-11-17 |
| CN111946378B CN111946378B (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010742387.3A Active CN111946378B (en) | 2020-07-29 | 2020-07-29 | Light electric bracket for coal mine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111946378B (en) |
| WO (1) | WO2022022056A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022022056A1 (en) * | 2020-07-29 | 2022-02-03 | 煤炭科学研究总院 | Light electric support for coal mine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116006232B (en) * | 2022-09-26 | 2023-08-15 | 云南滇东雨汪能源有限公司 | Fully-mechanized support transfer assembly and application equipment |
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| CN203685244U (en) * | 2014-01-26 | 2014-07-02 | 重庆大江工业有限责任公司 | Shield type hydraulic support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111946378B (en) * | 2020-07-29 | 2022-09-27 | 煤炭科学研究总院有限公司 | Light electric bracket for coal mine |
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2020
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2021
- 2021-06-01 WO PCT/CN2021/097772 patent/WO2022022056A1/en active Application Filing
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| WO2022022056A1 (en) * | 2020-07-29 | 2022-02-03 | 煤炭科学研究总院 | Light electric support for coal mine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111946378B (en) | 2022-09-27 |
| WO2022022056A1 (en) | 2022-02-03 |
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