Advanced hydraulic support and method of supporting

Abstract

The application provides an advanced hydraulic support and a supporting method. The advanced hydraulic support comprises a stand column, a top beam and a base. The stand column comprises an outer cylinder and a movable column, and the lower part of the movable column is located in the outer cylinder. The top beam comprises a top beam body, a plurality of hinged beams and a first driving part. The top of the movable column is matched in a top beam column socket so that the top beam body can move relative to the movable column. The plurality of hinged beams are arranged at the circumferential side of the top beam body at intervals in the circumferential direction. The hinged beams are hinged with the top beam body. The first driving part can drive each hinged beam to rotate upward. The base comprises a base body, a plurality of hinged legs and a second driving part. The bottom of the outer cylinder is matched in a base column socket so that the outer cylinder can move relative to the base body. The plurality of hinged legs are arranged at the circumferential side of the base body at intervals in the circumferential direction. The hinged legs are hinged with the base body. The second driving part can drive each hinged leg to rotate downward. Therefore, the advanced hydraulic support has the advantages of convenient supporting and improved efficiency.

Description

Technical Field

[0001] This invention relates to the field of mining technology, and more specifically to an advanced hydraulic support and support method. Background Technology

[0002] During the longwall mining process, the transport roadway and track roadway ahead of the working face are located in the superimposed influence zone of the working face's advance support pressure and lateral support pressure. This results in significant roadway deformation and severe damage, necessitating reinforced support and pressure relief measures to prevent excessive roadway deformation. Among related technologies, the most commonly used advance support methods are stepping hydraulic advance supports and unit advance supports. However, these two types of advance supports cannot achieve rapid and convenient adjustment of their travel direction and position, and their adaptability to support in roadways with large dip angles, complex cross-sections, and large deformation conditions is poor. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose an advanced hydraulic support and support method.

[0004] The advanced hydraulic support of this invention includes:

[0005] The column includes an outer cylinder and a movable column, the lower part of which is located inside the outer cylinder, and the movable column is telescopically disposed inside the outer cylinder so that the length of the column is adjustable.

[0006] The top beam includes a top beam body, multiple hinged beams, and a first driving part. The lower surface of the top beam body is provided with a top beam column socket, the inner wall of the top beam column socket is a concave spherical surface, the top of the movable column is a spherical surface, and the top of the movable column fits into the top beam column socket so that the top beam body can move relative to the movable column. The multiple hinged beams are circumferentially spaced on the periphery of the top beam body, and the hinged beams are hinged to the top beam body. The first driving part can drive each of the hinged beams to rotate upward.

[0007] The base includes a base body, multiple hinged legs, and a second drive unit. The upper surface of the base body is provided with a base recess, the inner wall of which is a concave spherical surface. The bottom of the outer cylinder is spherical and fits into the base recess so that the outer cylinder can move relative to the base body. The multiple hinged legs are circumferentially spaced on the periphery of the base body and are hinged to the base body. The second drive unit can drive each hinged leg to rotate downward.

[0008] Therefore, the advanced hydraulic support according to the embodiments of the present invention has the advantages of easy support and improved efficiency.

[0009] In some embodiments, the first drive unit includes a plurality of first adjusting cylinders, which are connected one-to-one with a plurality of the hinge beams. The first adjusting cylinders can drive the corresponding hinge beams to rotate upward so that the hinge beams have a top beam support position. In the top beam support position, the top surface of the hinge beam and the top surface of the top beam body are used to support the top plate.

[0010] The second drive unit includes a plurality of second adjusting cylinders, which are connected one-to-one with the plurality of the articulated legs. The second adjusting cylinders can drive the corresponding articulated legs to rotate downward so that the articulated legs have a base support position. In the base support position, the bottom surface of the articulated legs and the bottom surface of the base body are used to support the base plate.

[0011] In some embodiments, the piston rod is provided with a top beam fixing seat, the fixing part of each first adjusting cylinder is hinged to the top beam fixing seat, and the telescopic part of each first adjusting cylinder is hinged to the corresponding hinge beam.

[0012] The outer cylinder is provided with a base fixing seat, the fixing part of each second adjusting cylinder is hinged to the base fixing seat, and the telescopic part of each second adjusting cylinder is hinged to the corresponding hinged support leg.

[0013] In some embodiments, the top beam fixing seat is annular and sleeved on the outside of the movable column, and the position of the top beam fixing seat in the length direction of the movable column is adjustable;

[0014] The base fixing seat is annular and sleeved on the outside of the outer cylinder.

[0015] In some embodiments, each of the top beams includes at least three hinged beams, and the plurality of hinged beams are evenly spaced around the periphery of the top beam body in a circumferential direction;

[0016] Each of the bases includes at least three hinged legs, and the plurality of hinged legs are evenly spaced circumferentially around the periphery of the base body.

[0017] In some embodiments, the top beam body is a circular plate, and the base body is a circular plate;

[0018] Each of the top beams includes three hinged beams, and each of the bases includes three hinged legs.

[0019] In some embodiments, each of the articulated legs is provided with a wheel at one end away from the base body, and the wheel is movable downward relative to the articulated leg.

[0020] In some embodiments, each of the articulated legs has a plurality of spaced-apart connecting portions in its length direction, and the fixing portion of each of the second adjusting cylinders can be selectively hinged to one of the plurality of connecting portions of the articulated leg.

[0021] In some embodiments, the bottom of the piston rod separates the outer cylinder into a rod chamber and a rodless chamber, with the rodless chamber located below the rod chamber. The piston rod has a piston chamber, and a safety valve is provided at the bottom of the piston chamber. When the liquid pressure in the outer cylinder chamber exceeds the set pressure of the safety valve, the liquid in the rodless chamber can flow into the piston chamber through the safety valve.

[0022] The piston has multiple damping holes on its periphery, through which liquid in the piston cavity can enter the rod cavity.

[0023] The present invention also proposes a support method using the above-mentioned advanced hydraulic supports, comprising the following steps: using multiple advanced hydraulic supports to support the roadway in groups, adjusting the position of the top beam body, base body and column of each advanced hydraulic support so that the top beam body and multiple hinged beams of each advanced hydraulic support abut against the roadway roof, and the base body and multiple hinged legs of each advanced hydraulic support abut against the roadway floor. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of an advanced hydraulic support according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the folding of the advanced hydraulic support according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the articulated support leg unfolding according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of a column according to an embodiment of the present invention.

[0028] Figure 5 This is a top view of the top beam according to an embodiment of the present invention.

[0029] Figure 6 This is a top view of the base according to an embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of advanced hydraulic support according to an embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of advanced hydraulic support according to another embodiment of the present invention.

[0032] Figure 9This is a schematic diagram of advanced hydraulic support according to another embodiment of the present invention.

[0033] Figure label:

[0034] 1. Column, 11. Outer cylinder, 12. Piston, 13. Rod chamber, 14. Rodless chamber, 15. Piston chamber, 16. Safety valve, 17. Damping orifice;

[0035] 2. Top beam; 21. Top beam body; 22. Hinge beam; 23. First adjusting cylinder; 24. Top beam fixing seat;

[0036] 3. Base; 31. Base body; 32. Hinge leg; 321. Connecting part; 33. Second adjusting cylinder; 34. Base fixing seat; 35. Traveling wheel. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] The advanced hydraulic support of embodiments of the present invention is described below with reference to the accompanying drawings. Figures 1 to 9 As shown, the advanced hydraulic support according to an embodiment of the present invention includes a column 1, a top beam 2, and a base 3.

[0039] The column 1 includes an outer cylinder 11 and a piston 12. The lower part of the piston 12 is located inside the outer cylinder 11. The piston 12 is telescopically mounted inside the outer cylinder 11 so that the length (height) of the column 1 is adjustable, thereby adjusting the distance between the top beam 2 and the base 3, and thus adjusting the height of the top beam 2. Specifically, the bottom of the piston 12 divides the outer cylinder 11 into a rod chamber 13 and a rodless chamber 14, with the rodless chamber 14 located below the rod chamber 13. The piston 12 has a piston chamber 15, and a safety valve 16 is provided at the bottom (center position) of the piston chamber 15. When the liquid pressure in the outer cylinder 11 exceeds the set pressure of the safety valve 16, the liquid in the rodless chamber 14 can flow into the piston chamber 15 through the safety valve 16. Multiple damping holes 17 are provided on the periphery of the piston 12, and the liquid in the piston chamber 15 can enter the rod chamber 13 through the damping holes 17. This prevents column 1 from being crushed, ensures support performance while quickly absorbing displacement, and improves the buffering performance and support capacity of the column under impact load conditions.

[0040] The top beam 2 includes a top beam body 21, multiple hinged beams 22, and a first drive unit. The lower surface of the top beam body 21 has a top beam socket, the inner wall of which is a concave spherical surface. The top of the movable column 12 is also spherical, and it fits into the top beam socket so that the top beam body 21 can move relative to the movable column 12. Specifically, the spherical surface of the top of the movable column 12 is slidably connected to the spherical surface of the top beam socket, meaning the top of the movable column 12 and the top beam socket are hinged together by a socket-spherical hinge. This allows the top beam body 21 to move relative to the movable column 12 in multiple directions, facilitating adaptation to the undulations of the roadway roof.

[0041] Multiple hinged beams 22 are circumferentially spaced along the periphery of the top beam body 21. The hinged beams 22 are hinged to the top beam body 21, and a first driving unit can drive each hinged beam 22 to rotate upwards. Specifically, the first driving unit includes multiple first adjusting cylinders 23, each connected to a corresponding hinged beam 22. Each first adjusting cylinder 23 can drive the corresponding hinged beam 22 to rotate upwards, thus positioning the hinged beam 22 in a top beam support position. In this position, the top surface of the hinged beam 22 and the top surface of the top beam body 21 support the top plate. This allows the hinged beams 22 to be folded and unfolded. Folded hinged beams are easy to transport, and unfolded hinged beams can be moved to the top beam support position to support the top plate.

[0042] In some embodiments, the piston column 12 is provided with a top beam fixing seat 24, the fixing part of each first adjusting cylinder 23 is hinged to the top beam fixing seat 24, and the telescopic part of each first adjusting cylinder 23 is hinged to the corresponding hinge beam 22. The top beam fixing seat 24 is annular and sleeved on the outside of the piston column 12, and the position of the top beam fixing seat 24 in the length direction of the piston column 12 is adjustable. Specifically, the top beam fixing seat 24 is provided with a connecting hole, and the piston column 12 is provided with multiple connecting holes. A connecting column can pass through the connecting holes on the top beam fixing seat 24 and the piston column 12 so that the top beam fixing seat 24 is fixed on the piston column 12.

[0043] The base 3 includes a base body 31, multiple hinged legs 32, and a second drive unit. The upper surface of the base body 31 has a base recess, the inner wall of which is a concave spherical surface. The bottom of the outer cylinder 11 is spherical, and the bottom of the outer cylinder 11 fits into the base recess so that the outer cylinder 11 can move relative to the base body 31. Specifically, the spherical surface of the bottom of the outer cylinder 11 is slidably connected to the spherical surface of the base recess, that is, the bottom of the outer cylinder 11 and the base recess are hinged together by a recess-seat spherical surface, thereby allowing the outer cylinder 11 to move relative to the base body 31 in multiple directions.

[0044] Multiple hinged legs 32 are circumferentially spaced on the periphery of the base body 31. The hinged legs 32 are hinged to the base body 31, and a second drive unit can drive each hinged leg 32 to rotate downwards. Specifically, the second drive unit includes multiple second adjusting cylinders 33, each corresponding to one of the hinged legs 32. Each second adjusting cylinder 33 can drive the corresponding hinged leg 32 to rotate downwards, so that the hinged leg 32 has a base support position. In the base support position, the bottom surface of the hinged leg 32 and the bottom surface of the base body 31 are used to support the base plate. Thus, the hinged legs 32 can be folded and unfolded. Folded hinged legs 32 are easy to transport, and unfolded hinged legs 32 can be moved to the base support position to support the base plate.

[0045] In some embodiments, the outer cylinder 11 is provided with a base fixing seat 34, the fixing part of each second adjusting cylinder 33 is hinged to the base fixing seat 34, and the telescopic part of each second adjusting cylinder 33 is hinged to the corresponding hinged support leg 32. The base fixing seat 34 is annular and sleeved on the outside of the outer cylinder 11.

[0046] In some embodiments, the top beam body 21 is a circular plate, and the base body 31 is a circular plate. Each top beam 2 includes at least three hinged beams 22, which are evenly spaced circumferentially around the periphery of the top beam body 21. Each base 3 includes at least three hinged legs 32, which are evenly spaced circumferentially around the periphery of the base body 31. Specifically, each top beam 2 includes three hinged beams 22, and each base 3 includes three hinged legs 32.

[0047] In some embodiments, each articulated leg 32 is provided with a traveling wheel 35 at the end away from the base body 31. The traveling wheel 35 can move downward relative to the articulated leg 32. Specifically, the traveling wheel 35 is rotatably provided at the end of each articulated leg 32 away from the base body 31. The fixing part of the traveling wheel telescopic cylinder is hinged to the end of the articulated leg 32 away from the base body 31, and the telescopic part of the traveling wheel telescopic cylinder is hinged to the corresponding traveling wheel 35. So that when movement is required, the traveling wheel telescopic cylinder drives the traveling wheel 35 to rotate downward so that the traveling wheel 35 contacts the ground. The traveling wheel 35 can be freely extended and retracted, enabling short-distance movement and turning within the tunnel cross-section during movement, solving the problems of difficult support turning and transportation.

[0048] In some embodiments, each articulated leg 32 is provided with a plurality of spaced-apart connecting portions 321 along its length, and the fixing portion of each second adjusting cylinder 33 can be selectively hinged to one of the plurality of connecting portions 321 of the articulated leg 32. Specifically, the fixing portion of the second adjusting cylinder 33 can be connected to one of the plurality of connecting portions 321 adjacent to or away from the outer cylinder 11 as needed, thereby adjusting the supporting force of the articulated leg 32 and the second adjusting cylinder 33 on the outer cylinder 11.

[0049] According to an embodiment of the present invention, the column 1 of the advanced hydraulic support is telescopic, and the traveling wheels 35 are retractable, allowing the entire advanced hydraulic support to be folded and unfolded during operation. The folded state facilitates passage through low-ceilinged alleyways, saving transportation costs. Furthermore, the top beam 2 and the base 3 can move in multiple directions relative to the column 1, allowing the advanced hydraulic support to independently and freely adjust the support points of the base 3 and the top beam 2 at the required tilt angle, thereby improving efficiency.

[0050] Therefore, the advanced hydraulic support according to the embodiments of the present invention has the advantages of easy support and improved efficiency.

[0051] The present invention also proposes a support method for advanced hydraulic supports according to an embodiment of the present invention. The support method according to an embodiment of the present invention includes the following steps: using multiple advanced hydraulic supports to support the roadway in groups, adjusting the position of the top beam body 21, the base body 31 and the column 1 of each advanced hydraulic support so that the top beam body 21 and multiple hinged beams 22 of each advanced hydraulic support abut against the roadway roof, and the base body 31 and multiple hinged legs 32 of each advanced hydraulic support abut against the roadway floor.

[0052] like Figure 7 As shown, in one specific embodiment, the top surfaces of the top beam body 21 and the plurality of hinged beams 22 are generally horizontal. For example... Figure 8 As shown, in one specific embodiment, the top surfaces of the top beam body 21 and the plurality of hinged beams 22 are inclined, and the column 1 extends in the vertical direction. Figure 9 As shown, in a specific embodiment, the top surfaces of the top beam body 21 and the plurality of hinged beams 22 are inclined, and the column 1 is inclined.

[0053] Multiple advanced hydraulic supports are used in groups simultaneously. During use, each advanced hydraulic support can be independently supported and moved. The advanced hydraulic supports located in the last row can be directly transported to the first row by the walking wheels 35 to achieve cyclic support. Each cycle only moves the last row of advanced hydraulic supports, avoiding repeated support of the same position on the roof.

[0054] Therefore, the support method according to embodiments of the present invention has the advantages of facilitating support and improving efficiency.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An advanced hydraulic support, characterized in that, include: The column includes an outer cylinder and a movable column, the lower part of which is located inside the outer cylinder, and the movable column is telescopically disposed inside the outer cylinder so that the length of the column is adjustable; The top beam includes a top beam body, multiple hinged beams, and a first driving part. The lower surface of the top beam body is provided with a top beam column socket, the inner wall of the top beam column socket is a concave spherical surface, the top of the movable column is a spherical surface, and the top of the movable column fits into the top beam column socket so that the top beam body can move relative to the movable column. The multiple hinged beams are circumferentially spaced on the periphery of the top beam body, and the hinged beams are hinged to the top beam body. The first driving part can drive each of the hinged beams to rotate upward. The base includes a base body, multiple hinged legs, and a second drive unit. The upper surface of the base body is provided with a base socket, the inner wall of which is a concave spherical surface. The bottom of the outer cylinder is spherical and fits into the base socket so that the outer cylinder can move relative to the base body. The multiple hinged legs are circumferentially spaced on the periphery of the base body and are hinged to the base body. The second drive unit can drive each hinged leg to rotate downward. The piston rod is provided with a top beam fixing seat. The first driving part includes a plurality of first adjusting cylinders. The plurality of first adjusting cylinders are connected to the plurality of hinge beams in a one-to-one correspondence. The fixing part of each first adjusting cylinder is hinged to the top beam fixing seat, and the telescopic part of each first adjusting cylinder is hinged to the corresponding hinge beam. The top beam fixing seat is annular and sleeved on the outside of the piston rod. The position of the top beam fixing seat in the length direction of the piston rod is adjustable. Each of the articulated legs has a wheel at one end away from the base body, and the wheel can move downward relative to the articulated leg.

2. The advanced hydraulic support according to claim 1, characterized in that, The first adjusting cylinder can drive the corresponding hinge beam to rotate upward so that the hinge beam has a top beam support position. In the top beam support position, the top surface of the hinge beam and the top surface of the top beam body are used to support the top plate. The second drive unit includes a plurality of second adjusting cylinders, which are connected one-to-one with the plurality of the articulated legs. The second adjusting cylinders can drive the corresponding articulated legs to rotate downward so that the articulated legs have a base support position. In the base support position, the bottom surface of the articulated legs and the bottom surface of the base body are used to support the base plate.

3. The advanced hydraulic support according to claim 2, characterized in that, The outer cylinder is provided with a base fixing seat, the fixing part of each second adjusting cylinder is hinged to the base fixing seat, and the telescopic part of each second adjusting cylinder is hinged to the corresponding hinged support leg.

4. The advanced hydraulic support according to claim 3, characterized in that, The base fixing seat is annular and sleeved on the outside of the outer cylinder.

5. The advanced hydraulic support according to claim 1, characterized in that, Each of the top beams includes at least three hinged beams, and the plurality of hinged beams are evenly spaced around the periphery of the top beam body in the circumferential direction; Each of the bases includes at least three hinged legs, and the plurality of hinged legs are evenly spaced circumferentially around the periphery of the base body.

6. The advanced hydraulic support according to claim 5, characterized in that, The top beam body is a circular plate, and the base body is a circular plate; Each of the top beams includes three hinged beams, and each of the bases includes three hinged legs.

7. The advanced hydraulic support according to claim 3, characterized in that, Each of the articulated legs has a plurality of spaced-apart connecting portions along its length, and the fixing portion of each of the second adjusting cylinders can be selectively hinged to one of the plurality of connecting portions of the articulated leg.

8. The advanced hydraulic support according to any one of claims 1-7, characterized in that, The bottom of the piston rod separates the outer cylinder into a rod chamber and a rodless chamber. The rodless chamber is located below the rod chamber. The piston rod has a piston chamber, and a safety valve is provided at the bottom of the piston chamber. When the liquid pressure in the outer cylinder chamber exceeds the set pressure of the safety valve, the liquid in the rodless chamber can flow into the piston chamber through the safety valve. The piston has multiple damping holes on its periphery, through which liquid in the piston cavity can enter the rod cavity.

9. A support method using an advanced hydraulic support according to any one of claims 1-8, characterized in that, Includes the following steps: Multiple advanced hydraulic supports are used to provide group support for the roadway. The positions of the top beam body, base body and column of each advanced hydraulic support are adjusted so that the top beam body and multiple hinged beams of each advanced hydraulic support abut against the roadway roof, and the base body and multiple hinged legs of each advanced hydraulic support abut against the roadway floor.

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