Hydraulic support

Abstract

The present invention discloses a hydraulic support, comprising a base, a first driving member, a top plate, a first plate, a support plate, a second plate, a first mounting bracket, and a second driving member. The first driving member is connected to the base, the top plate is connected to an output end of the first driving member, the first driving member is used to drive the top plate to move in an up-down direction relative to the base, the first end of the first plate is rotatably connected to the top plate, the first end of the support plate is rotatably connected to the base, the second end of the support plate is rotatably connected to the second end of the first plate, the first end of the second plate is rotatably connected to the second end of the first plate, the first mounting bracket is fixedly connected to the first plate, the second driving member is connected to the first mounting bracket, and the output end of the second driving member is rotatably connected to the second plate. The hydraulic support of the present invention adapts to filling and non-filling working conditions by adjusting the positions of the first plate and the second plate, eliminating the need to replace the filling bracket and the hydraulic support, resulting in simple operation and improved work efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of underground coal mining equipment, and in particular relates to a hydraulic support. Background Art

[0002] When mining coal under pressure from "three sources" (roads, buildings, and water bodies), the coal seam beneath the rock must be mined and the space (the backfill area) promptly filled to prevent collapse. Backfilling is not necessary in normal areas, but only in special areas (such as those under "three sources" or when high-voltage power lines are located above the backfill area).

[0003] In the related art, it is necessary to prepare multiple filling hydraulic supports and coal mining hydraulic supports, and replace the filling hydraulic supports and coal mining hydraulic supports according to different road sections, which seriously affects the work efficiency and the progress of the working face. Summary of the Invention

[0004] The present invention aims to at least partially address one of the technical problems in the related art. To this end, embodiments of the present invention provide a hydraulic support that adapts to both filling and non-filling conditions by adjusting the positions of a first plate and a second plate. This eliminates the need to replace the filling support and the hydraulic support, resulting in simplified operation and improved work efficiency.

[0005] The hydraulic support of an embodiment of the present invention includes a base, a first driving member, a top plate, a first plate, a support plate, a second plate, a first mounting bracket and a second driving member, wherein the first driving member is connected to the base, the top plate is connected to the output end of the first driving member, the first driving member is used to drive the top plate to move in an up and down direction relative to the base, the first end of the first plate is rotatably connected to the top plate, so that the first plate can swing up and down around the first end of the first plate, the first end of the support plate is rotatably connected to the base, the second end of the support plate is rotatably connected to the second end of the first plate, the first end of the second plate is rotatably connected to the second end of the first plate, the second end of the second plate is rotatably connected to the second end of the first plate, so that the second plate can swing up and down around the first end of the second plate, the first mounting bracket is fixedly connected to the first plate and is located on a side of the first plate close to the bottom plate, the second driving member is connected to the first mounting bracket, and the output end of the second driving member is rotatably connected to the second plate and is located on a side of the second plate close to the bottom plate.

[0006] When the hydraulic support of the embodiment of the present invention does not need to be filled, the second driving member is used to drive the second plate to keep the second plate parallel to the first plate, thereby preventing the coal mine on the rear side from rolling down to the working interface. When filling is required, the second driving member is used to drive the second plate to rotate toward the bottom plate, so that the stones behind the hydraulic support fall to the ground, thereby realizing synchronous filling of the rear during the continuous coal mining process in the front. The operation is simple, the use is convenient, and the work efficiency is improved.

[0007] In some embodiments, the hydraulic support further comprises:

[0008] a second mounting bracket connected to the second plate and located on a side of the second plate close to the bottom plate;

[0009] a third driving member connected to the second mounting bracket, wherein an output end of the third driving member passes through the second plate and is located on a side of the second plate facing away from the bottom plate;

[0010] The third plate is connected to the output end of the third driving member and is located on a side of the second plate facing away from the bottom plate.

[0011] In some embodiments, the hydraulic support also includes a guide plate, the first end of the guide plate is connected to the first plate and is located on the side of the first plate away from the base plate, the second end of the guide plate extends toward the third plate, so that at least part of the second plate is located below the guide plate, the third plate includes a connected sliding part and a pressing part, the first end of the sliding part can be slidably connected to the second plate, and at least part of the sliding part is located between the guide plate and the second plate, the second end of the sliding part can be rotatably connected to the first end of the pressing part, and the pressing part is connected to the output end of the third driving member.

[0012] In some embodiments, the hydraulic support further comprises a supporting oil cylinder, which is rotatably connected to the base plate, and an output end of the supporting oil cylinder is rotatably connected to the second plate and is located on a side of the second plate close to the base plate.

[0013] In some embodiments, the hydraulic support further includes a guard plate and a fourth driving member, wherein the first end of the guard plate is rotatably connected to the top plate so that the guard plate can swing up and down around the first end of the guard plate, the fourth driving member is rotatably connected to the top plate and is located below the top plate, and the output end of the fourth driving member is rotatably connected to the guard plate.

[0014] In some embodiments, the hydraulic support further comprises:

[0015] A support box, the support box is connected to the top plate and is located below the support box, and an air inlet hole is opened on the bottom wall of the support box;

[0016] a filter screen connected to the support box and located in the air inlet;

[0017] a motor connected to the support box and located inside the support box;

[0018] a turbine, the turbine being sleeved on the output shaft of the motor and located below the motor;

[0019] a bellows, the bellows being connected to the support box and communicating with the support box;

[0020] A blocking piece is detachably connected to the outlet of the bellows, and the outer diameter of the blocking piece is the same as the inner diameter of the bellows.

[0021] In some embodiments, the hydraulic support further comprises:

[0022] A support plate, the support plate is sleeved on the output shaft of the motor and is located below the turbine, and a through slot is formed on the support plate;

[0023] a first magnet connected to the support plate and located below the support plate;

[0024] a rotating shaft, the rotating shaft being rotatably connected to the supporting box and located in the air inlet;

[0025] an adjusting plate, the adjusting plate being sleeved on the rotating shaft;

[0026] a second magnet connected to the upper end of the adjustment plate, wherein the upper magnetic pole of the second magnet is opposite to the lower magnetic pole of the first magnet, so that when the first magnet is close to the second magnet, the first magnet and the second magnet attract each other;

[0027] A first elastic member and a second elastic member, the first elastic member and the second elastic member are both located in the air inlet hole, two ends of the first elastic member are respectively connected to the first end faces of the support box and the adjustment plate, two ends of the second elastic member are respectively connected to the second end faces of the support box and the adjustment plate, under the action of the first elastic member and the second elastic member, the upper end and the lower end of the adjustment plate are both against the hole wall of the air inlet hole to block the inside of the support box from communicating with the outside world.

[0028] In some embodiments, the first magnet, the rotating shaft, the adjustment plate, the second magnet, the first elastic member and the second elastic member constitute a control component, there are multiple air inlet holes and multiple control components, the multiple air inlet holes are distributed at intervals along the circumference of the support plate, the multiple air inlet holes correspond one-to-one to the multiple control components, the control components are located in the corresponding air inlet holes, there are multiple first magnets, and the multiple first magnets are distributed at intervals along the circumference of the support plate.

[0029] In some embodiments, the hydraulic support further includes a brush head, which is located at the lower end of the adjustment plate and abuts against the filter screen. There are multiple brush heads, and the multiple brush heads are spaced apart and distributed on the adjustment plate.

[0030] In some embodiments, the hydraulic support further includes a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the rotating shaft, the second bevel gear is sleeved on one of the brush heads and meshes with the first bevel gear, and the multiple brush heads are transmission connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of a hydraulic support according to an embodiment of the present invention.

[0032] Figure 2 It is a side view of a hydraulic support according to an embodiment of the present invention.

[0033] Figure 3 It is a schematic diagram of the partial structure of the second plate of the hydraulic support according to an embodiment of the present invention.

[0034] Figure 4 Schematic diagram of a support box according to an embodiment of the present invention.

[0035] Figure 5 It is a schematic diagram of the partial structure inside the support box of an embodiment of the present invention.

[0036] Figure 6 This invention Figure 5 A partial enlarged view of a.

[0037] Figure 7 It is a schematic diagram of the local structure inside the air inlet of an embodiment of the present invention.

[0038] Reference numerals:

[0039] Base 1; first driving member 2; top plate 3; first plate 4; support plate 5; second plate 6; first mounting bracket 7; second driving member 8; second mounting bracket 9; third driving member 10; third plate 11; guide plate 12; sliding portion 13; pressing portion 14; supporting cylinder 15; guard plate 16; fourth driving member 17; support box 18; air inlet 19; filter 20; motor 21; turbine 22; bellows 23; sealing member 24; support plate 25; first magnet 26; rotating shaft 27; adjusting plate 28; second magnet 29; first elastic member 30; second elastic member 31; brush head 32; first bevel gear 33; second bevel gear 34. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0041] The hydraulic support according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0042] like Figures 1 to 3 As shown, the hydraulic support in the embodiment of the present invention includes a base 1, a first driving member 2, a top plate 3, a first plate 4, a support plate 5, a second plate 6, a first mounting frame 7 and a second driving member 8.

[0043] The first driving member 2 is connected to the base 1, and the roof 3 is connected to the output end of the first driving member 2. The first driving member 2 is used to drive the roof 3 to move vertically relative to the base 1. The first driving member 2 adjusts the height of the roof 3 so that the roof 3 supports the roof of the coal mine, thereby bearing the pressure of the rock on the working surface above the roof 3.

[0044] The first end of the first plate 4 (such as Figure 1 The upper end shown in FIG) can be rotatably connected to the top plate 3, so that the first plate 4 can swing up and down around the first end of the first plate 4, and the first end of the support plate 5 (as shown Figure 1 The lower end shown in FIG) can be rotatably connected to the base 1, and the second end of the support plate 5 (as shown Figure 1 The upper end shown in FIG) is rotatably connected to the second end of the first plate 4 (as shown in FIG). Figure 1 The first driving member 2 supports the left end of the top plate 3, and the support plate 5 and the first plate 4 support the right end of the top plate 3, thereby improving the stability of the hydraulic support.

[0045] The first end of the second plate 6 (such as Figure 1 The upper end shown in the figure) can be rotatably connected to the second end of the first plate 4, so that the second plate 6 can swing up and down around the first end of the second plate 6. The first mounting bracket 7 is fixedly connected to the first plate 4 and is located on the side of the first plate 4 close to the bottom plate (as shown in the figure). Figure 1 The first mounting bracket 7 extends toward the bottom plate, the second driving member 8 is connected to the first mounting bracket 7, and the output end of the second driving member 8 is rotatably connected to the second plate 6 and is located on the side of the second plate 6 close to the bottom plate (as shown in FIG. Figure 1 When filling is not required, the second driving member 8 is used to drive the second plate 6 so that the second plate 6 remains parallel to the first plate 4 to prevent the coal from rolling down to the working interface. When filling is required, the second driving member 8 is used to drive the second plate 6 to rotate toward the bottom plate so that the rocks behind the hydraulic support fall to the ground, thereby achieving synchronous filling of the rear while the front is continuously mined.

[0046] When the hydraulic support in the embodiment of the present invention does not need to be filled, the second driving member 8 is used to drive the second plate 6 so that the second plate 6 remains parallel to the first plate 4, thereby preventing the coal mine on the rear side from rolling down to the working interface. When filling is required, the second driving member 8 is used to drive the second plate 6 to rotate toward the bottom plate, so that the stones behind the hydraulic support fall to the ground, thereby realizing synchronous filling of the rear during the continuous coal mining process in the front. The operation is simple, the use is convenient, and the work efficiency is improved.

[0047] Optionally, the first driving member 2 and the second driving member 8 are both hydraulic cylinders.

[0048] like Figure 2 As shown, optionally, there are multiple support plates 5 , and the multiple support plates 5 are distributed at intervals on the base 1 .

[0049] like Figures 1 to 3 As shown, in some embodiments, the hydraulic support further includes a second mounting frame 9, a third driving member 10 and a third plate 11. The second mounting frame 9 is connected to the second plate 6 and is located on a side of the second plate 6 close to the bottom plate (such as Figure 1 The third drive member 10 is connected to the second mounting bracket 9, and the output end of the third drive member 10 passes through the second plate 6 and is located on the side of the second plate 6 away from the bottom plate (as shown). Figure 1 The third plate 11 is connected to the output end of the third driving member 10 and is located on the side of the second plate 6 facing away from the bottom plate. It should be noted that the third driving member 10 drives the third plate 11 to move axially along the third driving member 10, causing the third plate 11 to press the rocks behind the hydraulic support, thereby compacting the rock filling and reducing the subsidence of the coal mine filling area caused by the high pressure above the coal mine.

[0050] Therefore, the hydraulic support of the embodiment of the present invention uses the third driving member 10 and the third plate 11 to press the stones behind during the filling process, so that the stones are filled more compactly, reducing the subsidence of the coal mine filling area due to the high pressure above the coal mine.

[0051] Optionally, the third driving member 10 is a hydraulic cylinder.

[0052] like Figures 1 to 3 As shown, the hydraulic support further includes a guide plate 12, the first end of the guide plate 12 (such as Figure 1 The upper end shown in FIG) is connected to the first plate 4 and is located on the side of the first plate 4 away from the bottom plate, and the second end of the guide plate 12 (as shown in FIG) is connected to the first plate 4 and is located on the side of the first plate 4 away from the bottom plate. Figure 1 The lower end shown in the figure extends toward the third plate 11, so that at least part of the second plate 6 is located below the guide plate 12. The third plate 11 includes a sliding portion 13 and a pressing portion 14 connected to each other. The first end of the sliding portion 13 can be slidably connected to the second plate 6, and at least part of the sliding portion 13 is located between the guide plate 12 and the second plate 6. The second end of the sliding portion 13 can be rotatably connected to the first end of the pressing portion 14, and the pressing portion 14 is connected to the output end of the third driving member 10.

[0053] It should be noted that the guide plate 12 causes the falling stones to slide along the upper end surface of the guide plate 12, reducing the number of stones falling between the second plate 6 and the third plate 11 and the working space, thereby reducing the impact of the falling stones on the hydraulic support structure and the staff; when the pressing part 14 presses the stone backward, the pressing part 14 drives the sliding part 13 to slide on the second plate 6, and the pressing part 14 and the sliding part 13 are always connected, and the sliding part 13 is always connected to the second plate 6, further preventing the stones rolling down from above from entering between the third plate 11 and the second plate 6 and affecting the resetting of the third plate 11.

[0054] like Figures 1 to 3 As shown, in some embodiments, the hydraulic support further includes a support cylinder 15, which is rotatably connected to the base plate. The output end of the support cylinder 15 is rotatably connected to the second plate 6 and is located on the side of the second plate 6 closest to the base plate. It is understood that when not filled, the second plate 6 is supported by the second plate 6 against the rocks behind the coal mine shaft, which can easily cause the second plate 6 to break due to the excessive pressure, seriously affecting the service life of the second plate 6. By supporting the second plate 6 with the support cylinder 15, a portion of the pressure on the second plate 6 is transferred to the base plate, thereby reducing the pressure on the second plate 6 and increasing its service life.

[0055] like Figure 1 and Figure 2 As shown, in some embodiments, the hydraulic support further includes a guard plate 16 and a fourth driving member 17, the first end of the guard plate 16 (such as Figure 1 The upper end of the fourth driving member 17 is rotatably connected to the roof 3, so that the side guard plate 16 can swing up and down around the first end of the side guard plate 16. The fourth driving member 17 is rotatably connected to the roof 3 and is located below the roof 3. The output end of the fourth driving member 17 is rotatably connected to the side guard plate 16. It can be understood that the side guard plate 16 prevents coal blocks in front of the coal mine from easily falling onto the working interface, thereby preventing coal blocks in front of the coal mine from falling onto the working interface and affecting the construction of workers or even injuring workers.

[0056] like Figure 1 、 Figure 4 and Figure 5As shown, in some embodiments, the hydraulic support further includes a support box 18, a filter 20, a motor 21, a turbine 22, a bellows 23 and a blocking piece 24. The support box 18 is connected to the top plate 3 and is located below the support box 18. An air inlet 19 is provided on the bottom wall of the support box 18. The filter 20 is connected to the support box 18 and is located in the air inlet 19. The motor 21 is connected to the support box 18 and is located in the support box 18. The turbine 22 is sleeved on the output shaft of the motor 21 and is located below the motor 21. The bellows 23 is connected to the support box 18 and the bellows 23 is communicated with the support box 18. The blocking piece 24 is detachably connected to the outlet of the bellows 23. The outer diameter of the blocking piece 24 is the same as the inner diameter of the bellows 23. It can be understood that the motor 21 drives the turbine 22 to rotate, so that the air enters the support box 18 from the air inlet 19 under the drive of the turbine 22 and is discharged through the bellows 23, so that an air flow is formed at the outlet of the bellows 23. The staff can hold the bellows 23 and blow air at themselves, or point the outlet of the bellows 23 toward the coal mining site to reduce some debris splashing onto the working interface. When the bellows 23 is idle, the outlet of the bellows 23 is blocked by the sealing member 24 to reduce the dust from entering the bellows 23 and affecting the components in the bellows 23 and the support box 18.

[0057] like Figures 4 to 7 As shown, in some embodiments, the hydraulic support further includes a support plate 25, a first magnet 26, a rotating shaft 27, an adjusting plate 28, a second magnet 26, a first elastic member 30 and a second elastic member 31, the support plate 25 is sleeved on the output shaft of the motor 21 and is located below the turbine 22, a through slot is opened on the support plate 25, the first magnet 26 is connected to the support plate 25 and is located below the support plate 25, the rotating shaft 27 is rotatably connected to the support box 18 and is located in the air inlet 19, the adjusting plate 28 is sleeved on the rotating shaft 27, the second magnet 26 is connected to the upper end of the adjusting plate 28, and the upper end magnetic pole of the second magnet 26 is aligned with the first magnet The lower end magnetic poles of 26 are opposite, so when the first magnet 26 is close to the second magnet 26, the first magnet 26 and the second magnet 26 attract each other, and the first elastic member 30 and the second elastic member 31 are both located in the air inlet hole 19, and the two ends of the first elastic member 30 are respectively connected to the first end faces of the support box 18 and the adjustment plate 28, and the two ends of the second elastic member 31 are respectively connected to the second end faces of the support box 18 and the adjustment plate 28. Under the action of the first elastic member 30 and the second elastic member 31, the upper and lower ends of the adjustment plate 28 are both against the hole wall of the air inlet hole 19 to block the inside of the support box 18 from communicating with the outside world.

[0058] It should be noted that when the motor 21 is idle, the first magnet 26 is away from the second magnet 26, causing the adjustment plate 28 to rotate around the rotating shaft 27 under the action of the first elastic member 30 and the second elastic member 31, and the upper and lower ends of the adjustment plate 28 are both against the hole wall of the air inlet hole 19 to block the connection between the interior of the support box 18 and the outside world, thereby reducing the dust from entering the support box 18 through the air inlet hole 19 and causing adverse effects on the components inside the support box 18; the motor 21 drives the support plate 25 to rotate, and when the first magnet 26 is close to the second magnet 26, the first magnet 26 and the second magnet 26 attract each other, causing the adjustment plate 28 to overcome the elastic force of the first elastic member 30 and the second elastic member 31 and rotate around the rotating shaft 27, thereby separating the upper and lower ends of the adjustment plate 28 from the hole wall of the air inlet hole 19 so that the interior of the support box 18 is connected with the outside world through the air inlet hole 19.

[0059] In some embodiments, the first magnet 26, the rotating shaft 27, the adjustment plate 28, the second magnet 26, the first elastic member 30 and the second elastic member 31 constitute a control component. There are multiple air inlet holes 19 and control components. The multiple air inlet holes 19 are distributed at intervals along the circumference of the support plate 25. The multiple air inlet holes 19 correspond one-to-one to the multiple control components. The control components are located in the corresponding air inlet holes 19. There are multiple first magnets 26, and the multiple first magnets 26 are distributed at intervals along the circumference of the support plate 25.

[0060] Optionally, the number of the air inlet holes 19 is 6-10, for example, 6, 7, 8, 9, or 10. The number of the first magnets 26 is 2-3, for example, 2 or 3.

[0061] like Figure 6 and Figure 7 As shown, in some embodiments, the hydraulic support further includes a brush head 32, which is located at the lower end of the adjustment plate 28 and abuts against the filter 20. There are multiple brush heads 32, which are spaced apart on the adjustment plate 28. It should be noted that when the adjustment plate 28 rotates about the rotation axis 27, the adjustment plate 28 drives the brush heads 32 to move relative to the filter 20, thereby cleaning the filter 20.

[0062] like Figure 7 As shown, in some embodiments, the hydraulic support further includes a first bevel gear 33 and a second bevel gear 34. The first bevel gear 33 is sleeved on the rotating shaft 27, and the second bevel gear 34 is sleeved on one of the brush heads 32 and meshes with the first bevel gear 33, thereby providing a transmission connection for the multiple brush heads 32. It should be noted that when the adjustment plate 28 rotates about the rotating shaft 27, the second bevel gear 34 rotates relative to the first bevel gear 33, thereby causing the second bevel gear 34 to rotate about its own axis. The second bevel gear 34 drives the brush head 32 connected thereto to rotate, and the brush head 32 drives the multiple brush heads 32 to rotate synchronously, further improving the cleaning effect of the brush head 32 on the filter 20.

[0063] Optionally, the multiple brush heads 32 are connected via a chain drive.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0065] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0066] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0067] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0068] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0069] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A hydraulic support, characterized in that: include: base; a first driving member and a top plate, wherein the first driving member is connected to the base, and the top plate is connected to an output end of the first driving member, and the first driving member is used to drive the top plate to move in an up-down direction relative to the base; a first plate, wherein a first end of the first plate is rotatably connected to the top plate so that the first plate can swing up and down around the first end of the first plate; a support plate, wherein a first end of the support plate is rotatably connected to the base, and a second end of the support plate is rotatably connected to the second end of the first plate; a second plate, wherein a first end of the second plate is rotatably connected to the second end of the first plate so that the second plate can swing up and down around the first end of the second plate; a first mounting bracket, the first mounting bracket being fixedly connected to the first plate and located on a side of the first plate close to the base; a second driving member connected to the first mounting bracket, wherein an output end of the second driving member is rotatably connected to the second plate and is located on a side of the second plate close to the base; Also includes: a second mounting bracket connected to the second plate and located on a side of the second plate close to the base; a third driving member connected to the second mounting bracket, wherein an output end of the third driving member passes through the second plate and is located on a side of the second plate facing away from the base; a third plate connected to the output end of the third driving member and located on a side of the second plate facing away from the base; The third plate further comprises a guide plate, wherein a first end of the guide plate is connected to the first plate and is located on a side of the first plate facing away from the base, a second end of the guide plate extends toward the third plate so that at least a portion of the second plate is located below the guide plate, and the third plate comprises a sliding portion and a pressing portion connected to each other, a first end of the sliding portion being slidably connected to the second plate, and at least a portion of the sliding portion being located between the guide plate and the second plate, a second end of the sliding portion being rotatably connected to the first end of the pressing portion, and the pressing portion being connected to an output end of the third driving member; Also includes: A support box, the support box is connected to the top plate and is located below the top plate, and an air inlet hole is opened on the bottom wall of the support box; a filter screen connected to the support box and located in the air inlet; a motor connected to the support box and located inside the support box; a turbine, the turbine being sleeved on the output shaft of the motor and located below the motor; a bellows, the bellows being connected to the support box and communicating with the support box; a blocking piece, the blocking piece being detachably connected to the outlet of the bellows, the outer diameter of the blocking piece being the same as the inner diameter of the bellows; Also includes: A support plate, the support plate is sleeved on the output shaft of the motor and is located below the turbine, and a through slot is formed on the support plate; a first magnet connected to the support plate and located below the support plate; a rotating shaft, the rotating shaft being rotatably connected to the supporting box and located in the air inlet; an adjusting plate, the adjusting plate being sleeved on the rotating shaft; a second magnet connected to the upper end of the adjustment plate, wherein the upper magnetic pole of the second magnet is opposite to the lower magnetic pole of the first magnet, so that when the first magnet is close to the second magnet, the first magnet and the second magnet attract each other; A first elastic member and a second elastic member, the first elastic member and the second elastic member are both located in the air inlet hole, two ends of the first elastic member are respectively connected to the first end faces of the support box and the adjustment plate, two ends of the second elastic member are respectively connected to the second end faces of the support box and the adjustment plate, under the action of the first elastic member and the second elastic member, the upper end and the lower end of the adjustment plate are both against the hole wall of the air inlet hole to block the inside of the support box from communicating with the outside world.

2. The hydraulic support according to claim 1, characterized in that: It also includes a supporting oil cylinder, which is rotatably connected to the base. The output end of the supporting oil cylinder is rotatably connected to the second plate and is located on a side of the second plate close to the base.

3. The hydraulic support according to claim 1, characterized in that: It also includes a guard plate and a fourth driving member. The first end of the guard plate is rotatably connected to the top plate so that the guard plate can swing up and down around the first end of the guard plate. The fourth driving member is rotatably connected to the top plate and is located below the top plate. The output end of the fourth driving member is rotatably connected to the guard plate.

4. The hydraulic support according to claim 1, characterized in that: The first magnet, the rotating shaft, the adjustment plate, the second magnet, the first elastic member and the second elastic member constitute a control component. There are multiple air inlet holes and multiple control components, and the multiple air inlet holes are distributed at intervals along the circumference of the support plate. The multiple air inlet holes correspond one-to-one to the multiple control components, and the control components are located in the corresponding air inlet holes. There are multiple first magnets, and the multiple first magnets are distributed at intervals along the circumference of the support plate.

5. The hydraulic support according to claim 1, characterized in that: It also includes a brush head, which is connected to the lower end of the adjustment plate and abuts against the filter screen. There are multiple brush heads, and the multiple brush heads are distributed at intervals on the adjustment plate.

6. The hydraulic support according to claim 5, characterized in that: It also includes a first bevel gear and a second bevel gear, the first bevel gear is sleeved on the rotating shaft, the second bevel gear is sleeved on one of the brush heads and meshes with the first bevel gear, and the multiple brush heads are transmission connected.

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