Embedded blanking type filling coal mining hydraulic support and operation method thereof

Abstract

The invention discloses an embedded blanking type filling coal mining hydraulic support and an operation method thereof.The hydraulic support comprises a support body, the support body comprises a bearing beam, a base, at least two pairs of hydraulic stand columns and a four-connecting-rod mechanism, and the at least two pairs of hydraulic stand columns and the four-connecting-rod mechanism are connected between a top beam and the base. The hydraulic support further comprises a suspension type blanking device which is movably arranged at the rear end of the bearing beam in the horizontal direction and is configured to be used for adjusting the blanking amount according to the filling amount requirement. The auxiliary baffle assembly is arranged at the rear end of the bearing beam and located at the front end of the suspension type discharging device, and the auxiliary baffle assembly is configured to adjust the discharging position by adjusting the angle of the auxiliary baffle assembly. The vertical baffle assembly is arranged at the rear end of the base and used for preventing gangue from falling into a support or a working face. The auxiliary baffle assembly and the vertical baffle assembly are provided with an overlapping area in the height direction.

Description

Technical Field

[0001] This invention relates to the field of coal mine backfilling mining equipment technology, and in particular to an embedded material-dropping type backfilling coal mining hydraulic support and its operation method. Background Technology

[0002] With the upgrading of coal mining technology, the requirements for safety, efficiency, and environmental protection in coal mining are becoming increasingly stringent. Backfilling mining technology has also developed rapidly due to its significant advantages in gangue disposal and goaf management. However, in solid backfilling mining, existing processes and equipment often suffer from problems such as backfilling interference with production, low backfilling efficiency, and complex processes. Traditional hydraulic supports for solid backfilling mining have compaction mechanisms, leading to difficulties in coordinating backfilling and mining processes, severely restricting safe and efficient production at the coal face. Given the current urgent need to improve the efficiency of mining and backfilling coordination, the development of equipment and methods for solid backfilling mining in coal mines is of great significance. Summary of the Invention

[0003] This solution addresses the problems and needs raised above by proposing an embedded material-feeding filling hydraulic support for coal mining and its operation method. Due to the adoption of the following technical features, it can achieve the above-mentioned technical objectives and bring about several other technical effects.

[0004] One object of the present invention is to provide an embedded material-feeding type hydraulic support for coal mining, comprising a support body, the support body including: a load-bearing beam, a base, at least two pairs of hydraulic columns, and a four-bar linkage mechanism, wherein the at least two pairs of hydraulic columns and the four-bar linkage mechanism are all connected between the top beam and the base, characterized in that the hydraulic support further includes: A suspended material discharge device is movably mounted at the rear end of the supporting beam in the horizontal direction, and is configured to adjust the material discharge amount according to the filling amount requirement; An auxiliary baffle assembly is located at the rear end of the supporting beam and at the front end of the suspended material dropping device. It is configured to adjust the dropping position by adjusting its own angle. A vertical baffle assembly is located at the rear end of the base and is configured to prevent gangue from falling into the support body or the working surface; The auxiliary baffle assembly and the vertical baffle assembly have an overlapping area in the height direction.

[0005] In addition, the embedded material-feeding filling hydraulic support for coal mining and its operating method according to the present invention may also have the following technical features: In one example of the present invention, the auxiliary baffle assembly includes: A primary baffle unit has a first connection point and a second connection point spaced apart at one end. The first connection point is hinged to the load-bearing beam, and the second connection point is hinged to the load-bearing beam via a swing cylinder, so that the primary baffle unit can adjust the angle between itself and the load-bearing beam under the extension and retraction of the swing cylinder.

[0006] In one example of the present invention, the primary baffle unit includes: At least two auxiliary baffles, wherein at least one auxiliary baffle is hinged to the bearing beam and the swing cylinder, and at least another auxiliary baffle is telescopically disposed in the at least one auxiliary baffle to adjust the extension length of the primary baffle unit.

[0007] In one example of the present invention, the auxiliary baffle assembly includes: a secondary baffle unit with a third connection point and a fourth connection point spaced apart at one end thereon, the third connection point being hinged to the other end of the primary baffle unit, and the fourth connection point being hinged to the other end of the primary baffle unit via an auxiliary directional hydraulic cylinder, such that the secondary baffle unit can adjust the angle between itself and the primary baffle unit under the extension and retraction action of the auxiliary directional hydraulic cylinder.

[0008] In one example of the present invention, when at least two auxiliary baffles include a first auxiliary baffle and a second auxiliary baffle, the working length D of the primary baffle assembly is expressed as: In the formula, D1 is the length of the first auxiliary baffle; D3 is the extension length of the second auxiliary baffle; D3 is the length of the secondary baffle unit. The angle between the first auxiliary baffle and the load-bearing beam; The included angle between the secondary baffle unit and the second auxiliary baffle.

[0009] In one example of the present invention, the vertical baffle assembly includes: At least two fixed baffles, wherein at least one fixed baffle is connected to the base via a connecting mechanism to adjust the stopping angle of at least one of the fixed baffles; wherein at least one other fixed baffle is telescopically disposed within the at least one fixed baffle to adjust the stopping height of the vertical baffle assembly.

[0010] In one example of the present invention, the coupling mechanism includes: A hinge is connected between the vertical baffle assembly and the base, such that the vertical baffle assembly is hinged to the base; An angle cylinder, one end of which is hinged to the base and the other end of which is hinged to the end of the vertical baffle assembly opposite to the hinge, is configured to adjust the angle of the vertical baffle assembly by the extension and retraction of the angle cylinder.

[0011] In one example of the present invention, when at least two fixed baffles include a first fixed baffle and a second fixed baffle, the height of the vertical baffle assembly is adjusted according to the coordination between the advancing and filling / discharging processes of the working face, wherein the expression for adjusting the height L of the vertical baffle assembly is: In the formula, L1 is the height of the first-level fixed baffle.

[0012] In one example of the present invention, the expression for the maximum material blocking height H of the filling coal mining hydraulic support composed of the vertical baffle assembly and the auxiliary baffle assembly is: In the formula, L is the material blocking height of the vertical baffle assembly; The angle between the auxiliary baffle assembly and the supporting beam is denoted by ; D is the working length of the auxiliary baffle assembly.

[0013] Another object of the present invention is to provide an operating method for the embedded material-feeding filling hydraulic support for coal mining as described above, comprising the following steps: S10: Assisted material dropping orientation: Before the material is dropped by the movable suspended material dropping device, the swing angle of the auxiliary baffle assembly is adjusted according to the spatial characteristics of the goaf behind the frame. and telescopic length Change the location where the gangue falls; S20: Material feeding: The movable suspended material feeding device adjusts the feeding amount according to the filling volume requirement, and adjusts the auxiliary feeding direction in a timely manner according to the characteristics of gangue accumulation during the feeding process; S30: Baffle: The vertical baffle assembly adjusts its extension length according to the material accumulation height. When the material accumulation height reaches the maximum blocking height of the vertical baffle assembly Beforehand, adjust the auxiliary baffle assembly to the maximum material blocking height H position of the filling coal mining hydraulic support; S40: Frame shifting: Before the hydraulic support for filling coal mining moves forward, the suspended material dropping device is moved forward. Then, the hydraulic support for filling coal mining moves forward and the auxiliary material dropping orientation is adjusted synchronously, so as to change the material dropping position at the same time as the frame shifting, thereby maximizing space utilization and gangue disposal.

[0014] Compared with the prior art, the present invention has the following beneficial effects: A suspended material discharge device is installed at the rear of the coal mining hydraulic support, adjusting the material discharge rate according to the filling requirements. A vertical baffle assembly adjusts the baffle height based on the material accumulation height, effectively preventing gangue from falling into the support and working face. An auxiliary baffle assembly adjusts its own length, and a swing cylinder adjusts the angle of the first auxiliary baffle, precisely controlling the material discharge position. Through the coordinated operation of these devices, this coal mining hydraulic support improves filling efficiency without affecting working face production, reduces the risk of gangue falling into the support and working face during filling, and significantly improves the safety and efficiency of coal mine filling mining faces. This invention provides new equipment technology and methods for solid filling coal mining technology, ensuring safe, high-yield, and efficient filling mining faces.

[0015] The preferred embodiments of the invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the invention. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. The drawings are merely illustrative of some embodiments of the present invention and are not intended to limit the scope of the present invention to all embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the embedded material-feeding filling hydraulic support for coal mining according to an embodiment of the present invention; Figure 2 This is a flowchart illustrating the operation method of an embedded material-feeding hydraulic support for coal mining according to an embodiment of the present invention.

[0018] List of reference numerals in the attached diagram: 100 hydraulic supports; Support body 10; Load-bearing beam 11; Base 12; Hydraulic column 13; Four-bar linkage 14; Side panel 15; Hydraulic cylinder 16 for guard plate; 20-type suspended material unloading device; Hydraulic drive unit 21; Multi-hole bottom discharge conveyor device 22; Auxiliary baffle assembly 30; Primary baffle unit 31; First auxiliary baffle 311; First connection point 3111; Second connection point 3112; Second auxiliary baffle 312; Secondary baffle unit 32; Directional baffle 321; Third connection point 3211; Fourth connection point 3112; Swing cylinder 33; Auxiliary directional hydraulic cylinder 34; Vertical baffle assembly 40; First fixed baffle 41; Second fixed baffle 42; Connecting mechanism 43; Hinged component 431; Angle cylinder 432; Horizontal direction S; The height direction is H. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0021] According to a first aspect of the present invention, an embedded material-feeding type filling hydraulic support 100 for coal mining is provided, such as... Figure 1As shown, the system includes: a support body 10, which includes: a load-bearing beam 11, a base 12, at least two pairs of hydraulic columns 13, a side guard plate 15, and a four-bar linkage 14. The at least two pairs of hydraulic columns 13 and the four-bar linkage 14 are connected between the top beam and the base 12. The side guard plate 15 is hinged to the front end of the load-bearing beam 11. One end of the side guard plate hydraulic cylinder 16 is hinged to the load-bearing beam 11, and the other end is hinged to the side guard plate 15, thereby adjusting the angle of the side guard plate 15. For example, the hydraulic columns 13 include four, with two columns forming a pair. Two columns in each pair are arranged parallel to each other along the transverse direction. The two pairs of hydraulic columns 13 are spaced apart along the horizontal direction S, wherein the horizontal direction S is perpendicular to the transverse direction and the height direction H described below. The hydraulic support 100 also includes: A suspended material discharge device 20 is movably disposed at the rear end of the supporting beam 11 along the horizontal direction S, and is configured to adjust the material discharge amount according to the filling amount requirement. Specifically, the suspended material discharge device 20 includes a perforated bottom discharge conveyor 22 and a hydraulic drive device 21. The perforated bottom discharge conveyor 22 is movably installed at the rear of the supporting beam 11. For example, the perforated bottom discharge conveyor 22 is engaged with the rail on the supporting beam 11 through a slot. The hydraulic drive device 21 is disposed at the front end of the perforated bottom discharge conveyor 22 and connected to it. The perforated bottom discharge conveyor 22 adjusts its moving distance through the hydraulic drive device 21. For example, the position of the perforated bottom discharge conveyor 22 is adjusted by the telescopic movement of the hydraulic drive device 21.

[0022] The auxiliary baffle assembly 30 is located at the rear end of the supporting beam 11 and at the front end of the suspended material dropping device 20. It is configured to adjust the dropping position by adjusting its own angle. A vertical baffle assembly 40 is located at the rear end of the base 12 and is configured to prevent gangue from falling into the support body 10 or the working surface. The auxiliary baffle assembly 30 and the vertical baffle assembly 40 have an overlapping area in the height direction H.

[0023] The working principle of the hydraulic support 100 is as follows: Assisted material dropping orientation: Before the movable suspended material dropping device 20 drops material, the swing angle of the auxiliary baffle assembly 30 is adjusted according to the spatial characteristics of the goaf area behind the support. and telescopic length The system changes the location of the waste rock discharge; the discharge device 20 adjusts the discharge amount according to the filling requirements, and adjusts the auxiliary discharge orientation in a timely manner according to the waste rock accumulation characteristics during the discharge process; the vertical baffle assembly 40 adjusts its extension length according to the height of the discharged waste rock accumulation. When the material accumulation height reaches the maximum blocking height of the vertical baffle assembly 40. Before moving the auxiliary baffle assembly 30 forward, adjust it to the maximum material blocking height H position of the filling coal mining hydraulic support 100; before moving the support forward, move the suspended material dropping device 20 forward by hydraulic drive, and then move the filling coal mining hydraulic support 100 forward and adjust the auxiliary material dropping orientation synchronously, so as to change the material dropping position at the same time as moving the support, thereby maximizing space utilization and gangue disposal.

[0024] A suspended material dropping device 20 is installed at the rear of the coal mining hydraulic support 100, adjusting the material dropping amount according to the filling requirements. A vertical baffle assembly 40 adjusts the baffle height according to the material accumulation height, effectively preventing gangue from falling into the support and working face. An auxiliary baffle assembly 30 adjusts its own length, and the angle of the first auxiliary baffle 311 is adjusted by a swing cylinder 33 to precisely control the material dropping position. Through the coordinated operation of these devices, the coal mining hydraulic support 100 improves filling efficiency without affecting working face production, reduces the risk of gangue falling into the support and working face during filling, and significantly improves the safe and efficient production of coal mine filling mining faces. This invention provides new equipment technology and methods for solid filling coal mining technology, ensuring safe, high-yield, and efficient filling mining faces.

[0025] In one example of the present invention, the auxiliary baffle assembly 30 includes: The first-stage baffle unit 31 has a first connection point 3111 and a second connection point 3112 spaced apart at one end. The first connection point 3111 is hinged to the bearing beam 11, and the second connection point 3112 is hinged to the bearing beam 11 through a swing cylinder 33 (the two ends of the swing cylinder 33 are respectively hinged to the second connection point 3112 and the bearing beam 11), so that the first-stage baffle unit 31 can adjust the angle between itself and the bearing beam 11 under the extension and retraction action of the swing cylinder 33.

[0026] In other words, a first connection point 3111 is provided at the end of the primary baffle unit 31, and a second connection point 3112 is provided near the end of the primary baffle unit 31 at a distance from the first connection point 3111. By hinged to the first connection point 3111 and the supporting beam 11, the primary baffle unit 31 can swing relative to the supporting beam 11. The second connection point 3112 is hinged to one end of the swing cylinder 33, and the other end of the swing cylinder 33 is hinged to the supporting beam 11. The swing angle of the primary baffle unit 31 is adjusted by the extension and retraction of the swing cylinder 33. .

[0027] In one example of the present invention, the primary baffle unit 31 includes: At least two auxiliary baffles, wherein at least one auxiliary baffle is hinged to the bearing beam 11 and the swing cylinder 33, and at least another auxiliary baffle is telescopically disposed in the at least one auxiliary baffle to adjust the extension length of the primary baffle unit 31.

[0028] For example, at least two auxiliary baffles include a first auxiliary baffle 311 and a second auxiliary baffle 312. The first auxiliary baffle 311 is hinged to the bearing beam 11 and the swing cylinder 33. The second auxiliary baffle 312 is telescopically disposed in the first auxiliary baffle 311 to adjust the extension length of the first-stage baffle unit 31. For example, the second auxiliary baffle 312 is connected to the first auxiliary baffle 311 by hydraulic drive to realize the extension and retraction adjustment of the second auxiliary baffle 312.

[0029] Of course, the present invention is not limited to this. At least two auxiliary baffles can also be three, four or five or more auxiliary baffles, thereby realizing the length adjustment of the first-level baffle unit 31.

[0030] In one example of the present invention, the auxiliary baffle assembly 30 includes: a secondary baffle unit 32, with a third connection point 3211 and a fourth connection point 3112 spaced apart at one end thereon. The third connection point 3211 is hinged to the other end of the primary baffle unit 31, and the fourth connection point 3112 is hinged to the other end of the primary baffle unit 31 via an auxiliary directional cylinder 34 (the two ends of the auxiliary directional cylinder 34 are respectively hinged to the fourth connection point 3112 and the primary baffle unit 31), so that the secondary baffle unit 32 can adjust the angle between itself and the primary baffle unit 31 under the extension and retraction action of the auxiliary directional cylinder 34.

[0031] For example, the secondary baffle unit 32 includes a directional baffle 321, one end of which is provided with a third connection point 3211 and a fourth connection point 3112 at intervals. The third connection point 3211 is hinged to the other end of the primary baffle unit 31, and the fourth connection point 3112 is hinged to the other end of the primary baffle unit 31 through an auxiliary directional hydraulic cylinder 34.

[0032] By setting up a secondary baffle unit 32, the drop position of the gangue can be controlled more precisely.

[0033] Of course, the present invention is not limited to this. The secondary baffle unit 32 may also include multiple directional baffles 321, and the multiple directional baffles 321 are connected together in a retractable manner by hydraulic drive, similar to the structure of the primary baffle unit 31, which will not be described in detail here.

[0034] In one example of the present invention, when at least two auxiliary baffles include a first auxiliary baffle 311 and a second auxiliary baffle 312, the expression for the working length D of the primary baffle assembly is: In the formula, D1 is the length of the first auxiliary baffle 311; D2 is the length of the second auxiliary baffle 312; D3 is the extension length of the second auxiliary baffle 312; D3 is the length of the secondary baffle unit 32. The angle between the first auxiliary baffle 311 and the load-bearing beam 11; The included angle between the secondary baffle unit 32 and the second auxiliary baffle 312.

[0035] For example, the length D1 of the first auxiliary baffle 311 is 1500mm, and the swing angle is... The swing angle is 60°~150°. The length D2 of the first auxiliary baffle 311 is 1000mm, and the length D3 of the second-stage baffle unit 32 is 1000mm. The working length D of the auxiliary baffle assembly 30, which has a range of 60° to 180°, satisfies the above formula. By adjusting the extension length and swing angle of the auxiliary baffle assembly 30, the material dropping direction and position can be adjusted, thereby greatly improving the filling efficiency.

[0036] In one example of the present invention, the vertical baffle assembly 40 includes: At least two fixed baffles, wherein at least one fixed baffle is connected to the base 12 via a connecting mechanism 43 to adjust the stopping angle of at least one of the fixed baffles; wherein at least one other fixed baffle is telescopically disposed within the at least one fixed baffle to adjust the stopping height of the vertical baffle assembly 40.

[0037] In one example of the present invention, the coupling mechanism 43 includes: Hinge 431 is connected between the vertical baffle assembly 40 and the base 12, such that the vertical baffle assembly 40 is hinged to the base 12. An angle cylinder 432 has one end hinged to the base 12 and the other end hinged to the end of the vertical baffle assembly 40 away from the hinge member 431. It is configured to adjust the angle of the vertical baffle assembly 40 by the extension and retraction of the angle cylinder 432.

[0038] In one example of the present invention, when at least two fixed baffles include a first fixed baffle 41 and a second fixed baffle 42, the height of the vertical baffle assembly 40 is adjusted according to the coordination of the advancing and filling / discharging processes of the working face. The expression for adjusting the height L of the vertical baffle assembly 40 is: In the formula, L1 is the height of the first-level fixed baffle.

[0039] For example, the second fixed baffle 42 is connected to the first fixed baffle 41 by hydraulic drive to realize the extension and retraction adjustment of the second fixed baffle 42.

[0040] In one example of the present invention, the expression for the maximum material blocking height H of the filling coal mining hydraulic support 100 composed of the vertical baffle assembly 40 and the auxiliary baffle assembly 30 is: In the formula, L is the material blocking height of the vertical baffle assembly 40; The angle between the auxiliary baffle assembly 30 and the supporting beam 11 is denoted by D; D is the working length of the auxiliary baffle assembly 30.

[0041] The specific working process of the hydraulic support 100 is as follows: Assisted material dropping and orientation: Before the suspended material dropping device 20 drops the material, the swing angle of the first auxiliary baffle 311 is adjusted according to the spatial characteristics of the goaf behind the support. The telescopic length of the second auxiliary baffle 312 The auxiliary directional baffle 321 adjusts its swing angle to change the position of the waste rock falling; the falling material: the suspended falling device 20 adjusts the falling amount according to the filling volume requirement, and adjusts the auxiliary falling direction in a timely manner according to the waste rock accumulation characteristics during the falling process; the waste rock blocking: the vertical baffle assembly 40 adjusts the extension length of the second fixed baffle 42 according to the falling material accumulation height. When the material accumulation height reaches the maximum blocking height of the vertical baffle assembly 40. Before moving the auxiliary baffle assembly 30 forward, adjust it to the maximum material blocking height H position of the filling coal mining hydraulic support 100; before moving the support forward, move the suspended material dropping device 20 forward by hydraulic drive, and then move the filling coal mining hydraulic support 100 forward and adjust the auxiliary material dropping orientation synchronously, so as to change the material dropping position at the same time as moving the support, thereby maximizing space utilization and gangue disposal.

[0042] According to a second aspect of the present invention, a method for operating an embedded material-feeding type filling hydraulic support 100 for coal mining is as follows: Figure 2 As shown, it includes the following steps: S10: Assisted material dropping orientation: Before the movable suspended material dropping device 20 drops material, the swing angle of the auxiliary baffle assembly 30 is adjusted according to the spatial characteristics of the goaf area behind the frame. and telescopic length The swing angle of the auxiliary directional baffle 321 changes the position of the gangue falling material; S20: Material feeding: The movable suspended material feeding device 20 adjusts the material feeding amount according to the filling amount requirements, and adjusts the auxiliary material feeding orientation in a timely manner according to the characteristics of gangue accumulation during the material feeding process; S30: Baffle: The vertical baffle assembly 40 adjusts its extension length according to the material accumulation height. When the material accumulation height reaches the maximum blocking height of the vertical baffle assembly 40. Before adjusting the auxiliary baffle assembly 30 to the maximum material blocking height H position of the filling coal mining hydraulic support 100; S40: Frame shifting: Before the filling coal mining hydraulic support 100 moves forward, the suspended material dropping device 20 is moved forward by hydraulic drive. Then the filling coal mining hydraulic support 100 moves forward and the auxiliary material dropping orientation is adjusted synchronously, so as to change the material dropping position at the same time as the frame shifting, thereby maximizing space utilization and gangue disposal.

[0043] This operation method involves installing a suspended material drop device 20 at the rear of the coal mining hydraulic support 100, adjusting the material drop volume according to the filling requirements; adjusting the height of the vertical baffle assembly 40 according to the material accumulation height to effectively prevent gangue from falling into the support and working face; and adjusting the length of the auxiliary baffle assembly 30, with the angle of the first auxiliary baffle 311 adjusted by the swing cylinder 33 to precisely control the material drop position. Through the coordinated operation of these devices, this method improves filling efficiency without affecting working face production, reduces the risk of gangue falling into the support and working face during filling, and significantly improves the safe and efficient production of coal mine filling mining faces. This operation method provides new equipment technology and methods for solid filling coal mining technology, ensuring safe, high-yield, and efficient filling mining faces.

[0044] Specific examples: The maximum height of the coal mining hydraulic support 100 is 8.0m, and the maximum moving distance S of the hydraulic drive device 21 is 1200mm, which is the maximum moving distance of the coal mining hydraulic support 100.

[0045] The height L1 of the first fixed baffle 41 is 2000mm, and the maximum telescopic length L2 of the second fixed baffle 42 is 1500mm. Adjusting the baffle height according to the coordination of the working face advancement and filling / discharging process can effectively ensure safe production at the working face. The material blocking height L of the telescopic vertical baffle satisfies the following relationship: The length D1 of the first auxiliary baffle 311 is 1500mm, and the swing angle is... The swing angle is 60°~150°. The length D2 of the second auxiliary baffle 312 is 1000mm, and the length D3 of the secondary baffle unit 32 is 1000mm. The range is 60°~180°. By adjusting the extension length and swing angle of the auxiliary baffle assembly 30, the material dropping direction and position can be adjusted, which greatly improves the filling efficiency. The working length D of the auxiliary material dropping baffle satisfies the following relationship.

[0046] The maximum material-blocking height H of the filling coal mining hydraulic support 100, the material-blocking height L of the vertical baffle assembly 40, and the swing angle of the first auxiliary baffle 311 are all mentioned. The working length D of the auxiliary baffle assembly 30 satisfies the following relationship: When the swing angle is clear At its maximum, the maximum material blocking height H of the filling hydraulic support 100 is approximately 6531 mm.

[0047] The foregoing description, with reference to preferred embodiments, details an exemplary implementation of the embedded material-filling hydraulic support 100 for coal mining and its operating method proposed in this invention. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of this invention, and various combinations can be made to the various technical features and structures proposed in this invention without exceeding the protection scope of this invention, which is determined by the appended claims.

Claims

1. An embedded material-feeding type filling hydraulic support for coal mining, characterized in that, The support body (10) includes a support beam (11), a base (12), at least two pairs of hydraulic columns (13), and a four-bar linkage (14). The at least two pairs of hydraulic columns (13) and the four-bar linkage (14) are all connected between the top beam and the base (12). The hydraulic support (100) further includes: A suspended material dropping device (20) is movably disposed at the rear end of the bearing beam (11) along the horizontal direction (S) and configured to adjust the material dropping amount according to the filling amount requirement; An auxiliary baffle assembly (30) is located at the rear end of the supporting beam (11) and at the front end of the suspended material dropping device (20), and is configured to adjust the dropping position by adjusting its own angle. A vertical baffle assembly (40) is located at the rear end of the base (12) and is configured to prevent gangue from falling into the support body (10) or the working surface; The auxiliary baffle assembly (30) and the vertical baffle assembly (40) have an overlapping area in the height direction (H).

2. The embedded material-feeding filling hydraulic support for coal mining according to claim 1, characterized in that, The auxiliary baffle assembly (30) includes: A first-stage baffle unit (31) has a first connection point (3111) and a second connection point (3112) spaced apart at one end. The first connection point (3111) is hinged to the bearing beam (11), and the second connection point (3112) is hinged to the bearing beam (11) through a swing cylinder (33), so that the first-stage baffle unit (31) can adjust the angle between itself and the bearing beam (11) under the extension and retraction action of the swing cylinder (33).

3. The embedded material-feeding filling hydraulic support for coal mining according to claim 2, characterized in that, The primary baffle unit (31) includes: At least two auxiliary baffles, wherein at least one auxiliary baffle is hinged to the bearing beam (11) and the swing cylinder (33), wherein at least another auxiliary baffle is telescopically disposed in at least one auxiliary baffle to adjust the extension length of the primary baffle unit (31).

4. The embedded material-feeding filling hydraulic support for coal mining according to claim 3, characterized in that, The auxiliary baffle assembly (30) includes: The secondary baffle unit (32) has a third connection point (3211) and a fourth connection point (3112) spaced apart at one end. The third connection point (3211) is hinged to the other end of the primary baffle unit (31), and the fourth connection point (3112) is hinged to the other end of the primary baffle unit (31) through an auxiliary directional cylinder (34), so that the secondary baffle unit (32) can adjust the angle between itself and the primary baffle unit (31) under the extension and retraction action of the auxiliary directional cylinder (34).

5. The embedded material-feeding filling hydraulic support for coal mining according to claim 4, characterized in that, When at least two auxiliary baffles include a first auxiliary baffle (311) and a second auxiliary baffle (312), the working length D of the primary baffle assembly is expressed as: In the formula, D1 is the length of the first auxiliary baffle (311); D3 is the extension length of the second auxiliary baffle (312); D3 is the length of the secondary baffle unit (32); The angle between the first auxiliary baffle (311) and the load-bearing beam (11); The angle between the secondary baffle unit (32) and the second auxiliary baffle (312).

6. The embedded material-feeding filling hydraulic support for coal mining according to claim 1, characterized in that, The vertical baffle assembly (40) includes: At least two fixed baffles, wherein at least one fixed baffle is connected to the base (12) via a connecting mechanism (43) to adjust the stopping angle of at least one of the fixed baffles; wherein at least one other fixed baffle is telescopically disposed in the at least one fixed baffle to adjust the stopping height of the vertical baffle assembly (40).

7. The embedded material-feeding filling hydraulic support for coal mining according to claim 6, characterized in that, The connecting mechanism (43) includes: A hinge (431) is connected between the vertical baffle assembly (40) and the base (12), such that the vertical baffle assembly (40) is hinged to the base (12); An angle cylinder (432) is hinged at one end to the base (12) and at the other end to the end of the vertical baffle assembly (40) away from the hinge (431), and is configured to adjust the angle of the vertical baffle assembly (40) by the extension and retraction of the angle cylinder (432).

8. The embedded material-feeding filling hydraulic support for coal mining according to claim 6, characterized in that, When at least two fixed baffles include a first fixed baffle (41) and a second fixed baffle (42), the height of the vertical baffle assembly (40) is adjusted according to the coordination of the working face advancement and filling / discharging process. The height L adjustment expression for the vertical baffle assembly (40) is: In the formula, L1 is the height of the first-level fixed baffle.

9. The embedded material-feeding filling hydraulic support for coal mining according to claim 1, characterized in that, The expression for the maximum material blocking height H of the filling coal mining hydraulic support composed of the vertical baffle assembly (40) and the auxiliary baffle assembly (30) is: In the formula, L is the material blocking height of the vertical baffle assembly (40); D is the angle between the auxiliary baffle assembly (30) and the supporting beam (11); D is the working length of the auxiliary baffle assembly (30).

10. The method of operation of the embedded material-feeding filling hydraulic support for coal mining according to any one of claims 1 to 9, characterized in that, Includes the following steps: S10: Assisted material dropping orientation: Before the material is dropped by the movable suspended material dropping device (20), the swing angle of the auxiliary baffle assembly (30) is adjusted according to the spatial characteristics of the goaf area behind the frame. and telescopic length Change the location where the gangue falls; S20: Discharge: The movable suspended discharge device (20) adjusts the discharge amount according to the filling amount requirement, and adjusts the auxiliary discharge orientation in a timely manner according to the characteristics of gangue accumulation during the discharge process; S30: Barrier: The vertical baffle assembly (40) adjusts its extension length according to the material accumulation height. When the material accumulation height reaches the maximum blocking height of the vertical baffle assembly (40) Before adjusting the auxiliary baffle assembly (30) to the maximum material blocking height H position of the filling coal mining hydraulic support (100); S40: Frame shifting: Before the filling coal mining hydraulic support (100) moves forward, the suspended material dropping device (20) is moved forward. Then the filling coal mining hydraulic support (100) moves forward and the auxiliary material dropping orientation is adjusted synchronously, so as to change the material dropping position at the same time as the frame shifting, thereby maximizing the space utilization and gangue disposal volume.

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