Multi-stage linkage large window coal releasing device and super-large mining height top coal releasing transition hydraulic support

Abstract

The application discloses a multi-stage linkage large-window coal drawing device and an ultra-large mining height top coal drawing transition hydraulic support. The multi-stage linkage large-window coal drawing device comprises a swing beam, a tail beam, an insert plate, swing beam side guards, a first driver, a second driver, a third driver and a fourth driver. The tail beam is rotatably connected with the swing beam. The swing beam is provided with a first lug at an end away from the tail beam. The tail beam is provided with a sliding cavity. The first driver is used for driving the swing beam to rotate around the axis of the first lug. The second driver is used for driving the tail beam to swing relative to the swing beam. At least part of the section of the insert plate is arranged in the sliding cavity and is movable relative to the tail beam. The third driver is used for driving the insert plate to move relative to the tail beam. Two swing beam side guards are arranged on the two sides of the swing beam respectively. The swing beam side guards are movable relative to the swing beam in the width direction of the swing beam. The fourth driver is used for driving the swing beam side guards to move relative to the swing beam. The embodiment of the application has the advantages of large unfolding area and high top coal recovery rate of the transition section.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mining equipment, and particularly relates to a multi-stage linkage large-window coal drawing device and an ultra-large mining height top coal drawing transition hydraulic support. BACKGROUND

[0002] With the increasing depth and intensity of coal resource mining in China, the ultra-large mining height fully mechanized caving face gradually becomes the mainstream technology for efficient mining of thick coal seams. The window size of the coal drawing mechanism in the related technology is limited, and gangue is easily mixed in the top coal caving process, and the coal drawing is not sufficient, and the recovery rate is generally lower than 60%. In addition, the transition hydraulic support needs to consider the protection function of the power part of the rear scraper conveyor, and the expansion space and protection range of the coal drawing mechanism in the related technology are difficult to balance, especially when facing the ultra-large mining height fully mechanized caving operation of more than 7 meters of mining height, the conveyor is often damaged or the top coal is left due to the interference of the coal drawing track. SUMMARY

[0003] The present application aims to at least partially solve one of the technical problems in the related art.

[0004] To this end, an embodiment of the present application proposes a multi-stage linkage large-window coal drawing device with a large expansion area and a high top coal recovery rate in the transition section.

[0005] An embodiment of the present application also proposes an ultra-large mining height top coal drawing transition hydraulic support.

[0006] The multi-stage linkage large-window coal drawing device of the embodiment of the present application comprises:

[0007] The swing beam and the tail beam are rotatably connected, one end of the swing beam away from the tail beam has a first lug, and the tail beam has a sliding cavity;

[0008] The first driver is connected with the swing beam, and is used to drive the swing beam to rotate around the axis of the first lug;

[0009] The second driver is connected between the swing beam and the tail beam, and is used to drive the tail beam to swing relative to the swing beam;

[0010] The plug plate and the third driver are connected between the plug plate and the tail beam to drive the plug plate to move relative to the tail beam;

[0011] The swing beam side guard plates are two, and are respectively arranged on two sides of the swing beam in the width direction of the swing beam.

[0012] The multi-stage linkage large-window coal drawing device can form a trapezoidal coal drawing window through the multi-stage linkage cooperative control of the swing beam, the tail beam and the plug-in plate, effectively improves the expansion area of the coal drawing window, and solves the problem of top coal recovery in the transition section of the fully-mechanized coal mining face. The swing beam, the tail beam and the plug-in plate can be contracted to a compact form, facilitating transportation. During work, the hydraulic system drives the sequential expansion of each stage assembly, and the contraction and expansion range is large, the pitching swing flexibility is high, the key components of the rear scraper conveyor can be fully surrounded and protected, the directional caving and efficient recovery of the top coal can be realized, a breakthrough solution is provided for the industry, and effective balance between the expansion space and the protection range is realized.

[0013] In some embodiments, the swing beam has a first driving cavity and a second driving cavity, and the axis directions of the first driving cavity and the second driving cavity are consistent with the width direction of the swing beam.

[0014] The fourth driver includes a swing beam side guard plate jack, a spring, two guide rods and two push rods. The spring and the guide rods are arranged in the first driving cavity, the two ends of the spring are respectively connected with one end of the two guide rods, and the second ends of the two guide rods are respectively connected with the two swing beam side guard plates.

[0015] The swing beam side guard plate jack and the push rods are arranged in the second driving cavity, the two ends of the swing beam side guard plate jack are respectively connected with one end of the two push rods, and the second ends of the two push rods are respectively connected with the two swing beam side guard plates.

[0016] In some embodiments, the first driving cavity and the second driving cavity are multiple, and the multiple first driving cavities and the multiple second driving cavities are arranged in the length direction of the swing beam.

[0017] And / or, the push rods and the swing beam, and the guide rods and the swing beam are detachably connected with fixing pins, and the swing beam is provided with a fixing pin seat connected with the fixing pins.

[0018] In some embodiments, the swing beam includes:

[0019] The swing beam top plate has a swing beam support surface.

[0020] a plurality of swing beam main reinforcement plates arranged in parallel along a first direction, the swing beam main reinforcement plates being connected to a side of the swing beam top plate away from the swing beam support surface and arranged perpendicularly to the swing beam top plate, and a reinforcing plate being arranged between the swing beam main reinforcement plates and the swing beam top plate;

[0021] a swing beam cover plate arranged in parallel with the swing beam top plate along a second direction, the swing beam cover plate being connected between two adjacent swing beam main reinforcement plates;

[0022] a swing beam front end plate and a swing beam rear end plate arranged in parallel and opposite to each other along a third direction, the swing beam front end plate and the swing beam rear end plate being respectively connected to two ends of the swing beam main reinforcement plates, the swing beam top plate and the swing beam cover plate along the third direction to form a box structure;

[0023] a plurality of sleeves extending along the first direction, the sleeves being arranged on the swing beam main reinforcement plates, and the inner cavities of the sleeves being configured as the first driving cavities or the second driving cavities;

[0024] wherein the first direction, the second direction and the third direction are orthogonal to each other.

[0025] In some embodiments, the swing beam top plate comprises a main support plate and two auxiliary support plates arranged on two sides of the main support plate along the first direction, the main support plate having a main support surface, the auxiliary support plates having auxiliary support surfaces, the main support surface being protruded from the auxiliary support surfaces, the main support surface and the auxiliary support surfaces jointly forming the swing beam support surface, and the swing beam side guard plate abutting on the auxiliary support surfaces and being movable along the first direction;

[0026] and / or the first ear seat comprises a plurality of first ear plates arranged in parallel and spaced apart, the first ear plates being connected to the swing beam top plate and the swing beam front end plate, and an arc plate being arranged between the two first ear plates;

[0027] and / or, further comprising a plurality of second ear seats and a plurality of third ear seats, the second ear seats and the third ear seats are connected to the swing beam and located on the side of the swing beam away from the swing beam support surface, the second ear seats are used to be connected with the first driver, the third ear seats are used to be connected with the second driver, the second ear seats comprise two second ear plates arranged in parallel and spaced apart, the second ear plates are provided through the swing beam cover plate and connected with the swing beam top plate, and at least one of the second ear plates is attached to and fixed with the swing beam main rib plate, the third ear seats comprise two third ear plates arranged in parallel and spaced apart, the third ear plates are provided through the swing beam cover plate and connected with the swing beam top plate, and at least one of the third ear plates is attached to and fixed with the swing beam main rib plate, the second ear seats and the third ear seats correspond one by one and are integrally formed;

[0028] and / or, further comprising a plurality of tail beam hinged ear plates, a plurality of the tail beam hinged ear plates are arranged in parallel and spaced apart between the swing beam rear end plate and the swing beam top plate;

[0029] and / or, the swing beam side guard plates are two and are respectively arranged on the two sides of the swing beam in the first direction thereof, the swing beam side guard plates comprise a guard plate top plate, a guard plate side plate and a guard plate lining plate, the guard plate top plate and the guard plate side plate are connected and arranged in an L shape, the guard plate top plate is attached to the swing beam support surface, the guard plate side plate is located on the side of the swing beam in the first direction thereof, the guard plate lining plate is connected to one end of the guard plate side plate in parallel with the guard plate side plate, the guard plate lining plate is connected with the guard plate top plate and arranged in an L shape, the outer wall surface of the guard plate lining plate is lower than the outer wall surface of the guard plate side plate to form a sunken platform, and the guard plate lining plate and / or the guard plate side plate are provided with a reinforcing plate and a connecting seat connected with the fourth driver.

[0030] In some embodiments, the tail beam comprises a tail beam top plate, a tail beam side plate, a tail beam main reinforcement plate, a tail beam cover plate, a tail beam front end plate and a tail beam lip plate, one side of the tail beam top plate is a tail beam support surface, a plurality of tail beam main reinforcement plates are arranged between two tail beam side plates, the tail beam side plates and the tail beam main reinforcement plates are arranged in parallel and spaced apart in a first direction on the side of the tail beam top plate away from the tail beam support surface, the tail beam cover plate and the tail beam top plate are arranged in parallel and opposite directions in a second direction, the tail beam cover plate is arranged between the tail beam side plate and the tail beam main reinforcement plate adjacent thereto, and between two adjacent tail beam main reinforcement plates, the tail beam front end plate and the tail beam lip plate are arranged in parallel and opposite directions in a third direction, the tail beam lip plate is in the shape of a rectangular frame, the tail beam front end plate and the tail beam lip plate are respectively connected to the two ends of the tail beam side plate, the tail beam main reinforcement plate, the tail beam top plate and the tail beam cover plate in the third direction, and the tail beam main reinforcement plate divides the inner cavity formed by the tail beam top plate, the tail beam cover plate and the two tail beam side plates into a plurality of sliding sub-chambers, and the plurality of sliding sub-chambers are configured as the sliding cavity.

[0031] A fourth ear seat and a fifth ear seat are arranged on the tail beam, the fourth ear seat is used to be connected with the second driver, and the fifth ear seat is used to be connected with the third driver.

[0032] The first direction, the second direction and the third direction are orthogonal to each other.

[0033] In some embodiments, the fourth ear seat is located on the tail beam cover plate, the fourth ear seat comprises two fourth ear plates arranged in parallel and spaced apart, the fourth ear plates are connected with the tail beam cover plate, and a reinforcing plate is arranged between the fourth ear plates and the tail beam cover plate, and one of the fourth ear plates is integrally formed with the tail beam main reinforcement plate; the fifth ear seat is arranged in the sliding cavity, the fifth ear seat comprises two fifth ear plates arranged in parallel and spaced apart, the fifth ear plates are connected with the tail beam top plate and the tail beam front end plate, and a connecting plate is arranged between the fifth ear plates and the tail beam main reinforcement plate adjacent thereto;

[0034] And / or, the tail beam main reinforcement plate is two to separate the inner cavity surrounded by the tail beam top plate, the tail beam cover plate and the two tail beam side plates into a first sliding sub-chamber, a second sliding sub-chamber and a third sliding sub-chamber, the first sliding sub-chamber, the second sliding sub-chamber and the third sliding sub-chamber are configured as the sliding cavity, the third sliding sub-chamber is located between the first sliding sub-chamber and the second sliding sub-chamber, the fifth lug seat is arranged in the third sliding sub-chamber, one side of the tail beam main reinforcement plate adjacent to the third sliding sub-chamber is provided with a guide plate, and a sliding groove is defined between the guide plate and the tail beam top plate to limit and guide the plug-in plate, and the tail beam cover plate between the two tail beam main reinforcement plates has an opening;

[0035] And / or, one side of the tail beam side plate away from the tail beam top plate extends out of the tail beam cover plate to be configured as a tail beam guard plate, and a tail beam hinged lug seat is arranged between the tail beam front end plate and the tail beam top plate, and the tail beam hinged lug seat is used for rotating connection with the swing beam.

[0036] In some embodiments, the plug-in plate comprises a first beam body, a second beam body, a coal blocking beam body, a plug-in plate lip plate and plug-in teeth, the coal blocking beam body is located between the first beam body and the second beam body, the first beam body, the second beam body and the coal blocking beam body are respectively arranged in different sliding sub-chambers, the first beam body and the second beam body are box-shaped beams, a plurality of plug-in teeth are arranged on the plug-in plate lip plate in a spaced manner, and the plug-in plate lip plate is connected to one end of the first beam body, the second beam body and the coal blocking beam body.

[0037] The coal blocking beam body comprises a coal blocking top plate, a coal blocking side plate, a coal blocking reinforcement plate, a coal blocking reinforcing rib and a fixing plate, the coal blocking top plate has a coal blocking support surface, the coal blocking side plate is connected to both sides of the coal blocking top plate in a first direction thereof, the coal blocking reinforcement plate is parallel to the coal blocking side plate and is arranged on a side of the coal blocking top plate away from the coal blocking support surface, the coal blocking reinforcing rib is connected between the coal blocking side plate and the coal blocking reinforcement plate adjacent to the coal blocking side plate and / or connected between two adjacent coal blocking reinforcement plates, and a plurality of fixing plates are connected to one end of the coal blocking top plate close to the plug-in plate lip plate, the fixing plate and the coal blocking top plate and the coal blocking side plate form a fixed seat of a box-shaped structure, a sixth lug seat is arranged on a side of the coal blocking top plate away from the coal blocking support surface, the sixth lug seat is connected with the fixed seat, a reinforcing plate is arranged between the sixth lug seat and the coal blocking side plate, and the sixth lug seat is used for connection with the third driver.

[0038] In some embodiments, the first driver, the second driver, the fourth driver and the third driver are a plurality of drivers arranged side by side.

[0039] And / or, the swing angle of the swing beam rotating around the axis of the first ear seat is 0-30 degrees, and the swing angle of the tail beam rotating relative to the swing beam is 0-25 degrees.

[0040] The super-large mining height top coal caving transition hydraulic support of the embodiment of the application comprises:

[0041] A base;

[0042] A top beam, a front upright column and a rear upright column being arranged between the base and the top beam, the top beam having a first end and a second end;

[0043] A guard device, the guard device being arranged at the first end of the top beam;

[0044] A multi-stage linkage large-window coal caving device, the multi-stage linkage large-window coal caving device being according to any one of the above embodiments, the multi-stage linkage large-window coal caving device being rotatably connected at the second end of the top beam;

[0045] A positive four-bar linkage device, the positive four-bar linkage device comprising a front link, a rear link and an inclined beam, one end of the inclined beam being rotatably connected with the top beam, a second end of the inclined beam being inclined towards a direction close to the multi-stage linkage large-window coal caving device, the front link and the rear link being connected between the inclined beam and the base to form the positive four-bar linkage device. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 is a schematic diagram of the super-large mining height top coal caving transition hydraulic support of the embodiment of the application.

[0047] Figure 2 is a three-dimensional schematic diagram of the super-large mining height top coal caving transition hydraulic support of the embodiment of the application.

[0048] Figure 3 is a three-dimensional schematic diagram of the multi-stage linkage large-window coal caving device of the embodiment of the application.

[0049] Figure 4 is an exploded schematic diagram of the multi-stage linkage large-window coal caving device of the embodiment of the application.

[0050] Figure 5 is a three-dimensional schematic diagram of the swing beam in the multi-stage linkage large-window coal caving device of the embodiment of the application.

[0051] Figure 6 is a schematic diagram of the swing beam in the multi-stage linkage large-window coal caving device of the embodiment of the application.

[0052] Figure 7 is Figure 6 a schematic diagram of A-A direction.

[0053] Figure 8 is Figure 6 a schematic view of the B-B direction in figure 1.

[0054] Figure 9 is a schematic view of the swing beam side guard plate in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0055] Figure 10 is a schematic view of the tail beam in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0056] Figure 11 is a schematic view of another perspective of the tail beam in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0057] Figure 12 is a schematic view of the swing beam in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0058] Figure 13 is a schematic view of the swing state of the swing beam in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0059] Figure 14 is a schematic view of the swing beam side guard plate in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0060] Figure 15 is a schematic view of the swing beam side guard plate in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0061] Figure 16 is a schematic view of the swing state of the tail beam in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0062] Figure 17 is a schematic view of the extension state of the swing beam side guard plate in the multi-stage linkage large window coal releasing device of the embodiment of the present application.

[0063] Figure 18 is a schematic view of the super-large mining height top coal releasing transition hydraulic support in the blocking state.

[0064] Figure 19 is a schematic view of the super-large mining height top coal releasing transition hydraulic support in the coal releasing state.

[0065] Reference signs:

[0066] 100, super-large mining height top coal releasing transition hydraulic support; 200, multi-stage linkage large window coal releasing device; 300, rear scraper conveyor;

[0067] 1, base;

[0068] 2, top beam;

[0069] 31, front upright post; 32, rear upright post; 33, diagonal beam; 34, front connecting rod; 35, rear connecting rod;

[0070] 4, guard device;

[0071] 5, swing beam; 51, first lug; 511, first lug plate; 512, arc plate; 52, second lug; 521, second lug plate; 53, third lug; 531, third lug plate; 54, swing beam top plate; 541, main support plate; 542, auxiliary support plate; 55, swing beam main reinforcement plate; 56, swing beam cover plate; 57, swing beam front end plate; 58, swing beam rear end plate; 581, tail beam hinged lug plate; 59, sleeve; 591, first driving cavity; 592, second driving cavity;

[0072] 6, tail beam; 61, tail beam top plate; 62, tail beam side plate; 621, tail beam guard plate; 63, tail beam main reinforcement plate; 631, guide plate; 64, tail beam cover plate; 65, tail beam front end plate; 651, tail beam hinged lug; 66, tail beam lip plate; 67, sliding cavity; 671, first sliding sub-chamber; 672, second sliding sub-chamber; 673, third sliding sub-chamber; 68, fourth lug; 681, fourth lug plate; 69, fifth lug; 691, fifth lug plate; 692, connecting plate;

[0073] 7, plug-in plate; 71, first beam body; 72, second beam body; 73, coal blocking beam body; 731, coal blocking top plate; 732, coal blocking side plate; 733, coal blocking reinforcement plate; 734, coal blocking reinforcing rib; 735, fixed plate; 736, fixed seat; 74, plug-in plate lip plate; 75, plug-in gear; 76, sixth lug;

[0074] 8, swing beam side guard plate; 81, guard plate top plate; 82, guard plate side plate; 83, guard plate lining plate; 84, connecting seat; 85, reinforcing plate;

[0075] 91, first driver; 92, second driver; 93, third driver; 94, fourth driver; 941, swing beam side guard plate jack; 942, push rod; 943, spring; 944, guide rod; 945, fixed pin; 946, fixed pin seat. DETAILED DESCRIPTION

[0076] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0077] Referring to Figures 1-19 , the multi-stage linkage large window coal discharge device 200 of the embodiment of the present application comprises a swing beam 5, a tail beam 6, a plug-in plate 7, a first driver 91, a second driver 92 and a third driver 93.

[0078] The tail beam 6 is rotatably connected with the swing beam 5, and the end of the swing beam 5 away from the tail beam 6 is provided with a first lug 51 for rotatable connection with the top beam 2 of the hydraulic support, so that the swing beam 5 can be swung relative to the top beam 2 in the generally up-down direction shown in the figure. The first drive 91 is connected between the top beam 2 and the swing beam 5, and is used to drive the swing beam 5 to rotate about the axis of the first lug 51.

[0079] The second drive 92 is connected between the swing beam 5 and the tail beam 6, and is used to drive the tail beam 6 to swing relative to the swing beam 5 in the generally up-down direction shown in the figure.

[0080] The tail beam 6 has a sliding cavity 67 in which at least a part of the section of the plug plate 7 is arranged and movable relative to the tail beam 6. The sliding cavity 67 can position and guide the plug plate 7, and improve the structural rigidity of the plug plate 7 and the tail beam 6. The third drive 93 is connected between the plug plate 7 and the tail beam 6 to drive the plug plate 7 to move relative to the tail beam 6 in the generally front-back direction shown in the figure.

[0081] The swing beam side guards 8 are also provided on both sides of the swing beam 5 in the width direction (left-right direction shown in the figure). The swing beam side guards 8 are movable relative to the swing beam 5 in the width direction of the swing beam 5, and the fourth drive 94 is connected between the swing beam side guards 8 and the swing beam 5 to drive the swing beam side guards 8 to move relative to the swing beam 5 in the left-right direction shown in the figure, thereby achieving the unfolding or folding of the swing beam side guards 8 relative to the swing beam 5.

[0082] The first drive 91, the second drive 92, the third drive 93 and the fourth drive 94 in the embodiment can all be hydraulic jacks, and there are multiple of each, for example, two sets of each. The two sets of drives can balance the forces between the corresponding parts, avoiding side deflection or deformation when subjected to the pressure of falling coal, and have good structural stability.

[0083] In application, the swing action of the swing beam 5 relative to the top beam 2, the swing action of the tail beam 6 relative to the swing beam 5, and the extension and retraction action of the plug plate 7 relative to the tail beam 6 can realize three-stage linkage, thereby adjusting the posture of the coal releasing device in a large range, with high flexibility of posture adjustment. The unfolding space can be effectively adjusted under different working conditions, and balance can be achieved in forming a coal releasing window and range protection, with good practicability. As a transition hydraulic support, the coal releasing device can avoid interference with the power components of the rear scraper conveyor 300, and after reasonable adjustment of the posture of the coal releasing device, effective coal releasing can be realized while protecting the rear scraper conveyor 300.

[0084] The multi-stage linkage large-window coal drawing device 200 can form a trapezoidal coal drawing window through the multi-stage linkage cooperative control of the swing beam 5, the tail beam 6 and the plug plate 7, effectively improves the expansion area of the coal drawing window, and solves the problem of top coal recovery of the transition section of the fully-mechanized coal face. The swing beam 5, the tail beam 6 and the plug plate 7 can be contracted to a compact form, facilitating transportation, and when working, the hydraulic system drives the sequential expansion of each component, the contraction and expansion range is large, the pitching swing flexibility is high, the key components of the rear scraper conveyor 300 can be fully surrounded and protected, and the directional caving and efficient recovery of the top coal can be realized, which provides a breakthrough solution for the industry, realizes the effective balance of the expansion space and the protection range.

[0085] Referring to Figures 5-8 In some embodiments, the swing beam 5 has a first driving cavity 591 and a second driving cavity 592, the axis directions of the first driving cavity 591 and the second driving cavity 592 are consistent with the width direction of the swing beam 5, in other words, the first driving cavity 591 and the second driving cavity 592 extend along the left-right direction shown in the figure.

[0086] The fourth driver 94 includes a swing beam side guard plate jack 941, a spring 943, two guide rods 944 and two push rods 942, the spring 943 and the guide rod 944 are arranged in the first driving cavity 591, the two ends of the spring 943 are respectively connected with one end of the two guide rods 944, and the second ends of the two guide rods 944 are respectively connected with the two swing beam side guard plates 8. The swing beam side guard plate jack 941 and the push rod 942 are arranged in the second driving cavity 592, the two ends of the swing beam side guard plate jack 941 are respectively connected with one end of the two push rods 942, and the second ends of the two push rods 942 are respectively connected with the two swing beam side guard plates 8.

[0087] Further, the first driving cavity 591 and the second driving cavity 592 are multiple, the multiple first driving cavities 591 and the multiple second driving cavities 592 are arranged in the length direction of the swing beam 5. The push rod 942 and the swing beam 5, and the guide rod 944 and the swing beam 5 are detachably connected with a fixing pin 945, and the swing beam 5 is provided with a fixing pin seat 946 connected with the fixing pin 945.

[0088] In the application, the spring 943 is in a compressed state, and when the swing beam side guard 8 can be pushed and unfolded by the guide rod 944 under the elastic force of the spring 943 when the swing beam side guard jack 941 is in a free state. The fixing pin 945 is used to fix the push rod 942 or the guide rod 944 with the swing beam 5, which plays a fixing role to prevent the push rod 942 from moving in the second drive cavity 592 or the guide rod 944 from moving in the first drive cavity 591. For example, when the swing beam side guard 8 on the left side of the swing beam 5 does not need to be unfolded, the fixing pin 945 can be arranged between the guide rod 944 on the left side and the swing beam 5, and between the push rod 942 on the left side and the swing beam 5, so that the guide rod 944 and the push rod 942 on the left side can serve as a base to provide a counteracting force for the spring 943 and the swing beam side guard jack 941. At this time, the swing beam side guard jack 941 is in a free expansion state, and the swing beam side guard 8 on the right side can be pushed out under the pushing action of the spring 943 and the guide rod 944. When it needs to be retracted, the swing beam side guard jack 941 is retracted to reset the swing beam side guard 8 to the right side of the swing beam 5, and the spring 943 is compressed.

[0089] The first drive cavity 591 and the second drive cavity 592 of the embodiment of the application can be two, two second drive cavities 592 are located in the middle of the front-rear direction of the swing beam 5, and two first drive cavities 591 are respectively located at both ends of the front-rear direction of the swing beam 5, so that the four drive cavities are arranged side by side. In the moving process, the guide rod 944 and the push rod 942 can be guided and supported with the swing beam 5, so as to avoid damage to the swing beam side guard jack 941 caused by lateral force.

[0090] Referring to Figures 5-8 In some embodiments, the swing beam 5 includes a swing beam top plate 54, a plurality of swing beam main rib plates 55, a swing beam cover plate 56, a swing beam front end plate 57, a swing beam rear end plate 58, and a plurality of sleeve pipes 59.

[0091] The swing beam top plate 54 has a swing beam 5 support surface, and the upper surface shown in the figure of the swing beam top plate 54 is the swing beam 5 support surface. The swing beam 5 support surface is used to bear the top plate collapsed coal gangue, and to protect the rear scraper conveyor 300, the power component and other auxiliary components below the swing beam 5. Of course, after the swing beam side guard 8 is unfolded, the protection range can be improved, and effective cooperation with adjacent other hydraulic supports can be achieved, thereby improving the supporting effect.

[0092] The plurality of swing beam main reinforcement plates 55 are arranged in parallel along a first direction, which is the left-right direction shown in the figure, and are connected to the side of the swing beam top plate 54 away from the support surface of the swing beam 5 (the lower side of the swing beam 5 shown in the figure) and arranged perpendicularly to the swing beam top plate 54. A reinforcing plate 85 is arranged between the swing beam main reinforcement plate 55 and the swing beam top plate 54 to improve the structural strength of the swing beam main reinforcement plate 55 and the swing beam top plate 54, optimize the stress conditions at different positions, reduce stress concentration, and avoid deformation.

[0093] The swing beam cover plate 56 is arranged in parallel with the swing beam top plate 54 along a second direction, which is the up-down direction shown in the figure. The swing beam cover plate 56 is connected between two adjacent swing beam main reinforcement plates 55. The swing beam front end plate 57 and the swing beam rear end plate 58 are arranged in parallel and opposite to each other along a third direction, which is the front-back direction shown in the figure. The swing beam front end plate 57 and the swing beam rear end plate 58 are respectively connected to the two ends of the swing beam main reinforcement plate 55, the swing beam top plate 54, and the swing beam cover plate 56 in the third direction to form a box-shaped structure. Thus, the overall structure of the swing beam 5 is stable and has strong anti-deformation performance. When the swing beam 5 is used to support the collapsed coal gangue on the top plate, it can ensure that the swing beam 5 does not deform, has good support effect, and is safer.

[0094] In this embodiment, the sleeve 59 extends along the first direction, and the sleeve 59 is arranged on the plurality of swing beam main reinforcement plates 55. The inner cavity of the sleeve 59 is configured as a first driving cavity 591 or a second driving cavity 592. For example, there are four sleeves 59, and the four sleeves 59 are respectively configured as two first driving cavities 591 and two second driving cavities 592. The first driving cavities 591 are used to arrange springs 943 and guide rods 944, and the second driving cavities 592 are used to arrange swing beam side guard plates 941 and push rods 942.

[0095] The first direction, the second direction, and the third direction in this embodiment are orthogonal to each other. When the base 1 of the transition hydraulic support is in a horizontal state, the height direction of the transition hydraulic support is the up-down direction shown in the figure, the width direction of the transition hydraulic support is the left-right direction shown in the figure, and the length direction of the transition hydraulic support is the front-back direction shown in the figure. After the coal releasing device is assembled on the transition hydraulic support, since the swing beam 5, the tail beam 6, and the plug plate 7 in the coal releasing device are all located at the rear end of the top beam 2 and can be tilted and swung, the first direction of this embodiment is parallel to the left-right direction shown in the figure, that is, the first direction is the left-right direction, and the first direction can be the width direction of the swing beam 5, the tail beam 6, and the plug plate 7. The second direction has a certain angle with the up-down direction shown in the figure, and the second direction extends along the general up-down direction. The second direction can be the thickness direction of the swing beam 5, the tail beam 6, and the plug plate 7. The third direction has a certain angle with the front-back direction shown in the figure, and the third direction extends along the general front-back direction. The third direction is the length direction of the swing beam 5, the tail beam 6, and the plug plate 7.

[0096] Referring to Figures 5-8 In some embodiments, the top plate 54 of the swing beam comprises a main support plate 541 and two auxiliary support plates 542 arranged on both sides of the main support plate 541 in the first direction thereof, the main support plate 541 has a main support surface, the auxiliary support plates 542 have auxiliary support surfaces, the main support surface protrudes from the auxiliary support surfaces, and the main support surface and the auxiliary support surfaces jointly form a swing beam 5 support surface, and the swing beam side guard plate 8 abuts against the auxiliary support surfaces and is movable in the first direction.

[0097] Referring to Figure 9 The swing beam side guard plate 8 is two and arranged on both sides of the swing beam 5 in the first direction thereof, and comprises a guard plate top plate 81, a guard plate side plate 82 and a guard plate lining plate 83. The guard plate top plate 81 and the guard plate side plate 82 are connected and arranged in an L shape, the guard plate top plate 81 abuts against the swing beam 5 support surface, the guard plate side plate 82 is located at the side of the swing beam 5 in the first direction thereof, the guard plate lining plate 83 is parallel to the guard plate side plate 82 and connected to one end of the guard plate side plate 82, the guard plate lining plate 83 is connected to the guard plate top plate 81 and arranged in an L shape, the outer wall surface of the guard plate lining plate 83 is lower than the outer wall surface of the guard plate side plate 82 to form a sunken platform, and the guard plate lining plate 83 and / or the guard plate side plate 82 is provided with a reinforcing plate 85 and a connecting seat 84 connected to the fourth driver 94.

[0098] It can be understood that the main support plate 541 and the two auxiliary support plates 542 are arranged in a generally U shape, and the two ends of the swing beam 5 support surface in the first direction are lower than the middle part, thereby facilitating the connection of the swing beam side guard plate 8 and the auxiliary support plate 542, and when the guard plate top plate 81 of the swing beam side guard plate 8 abuts against the auxiliary support surface, the guard plate top plate 81 is flush with the end surface of the main support plate 541. In this embodiment, the outer wall surface of the guard plate lining plate 83 is lower than the outer wall surface of the guard plate side plate 82, thereby forming a sunken platform, which can be partially overlapped with the top beam 2 side guard plate on the top beam 2 of the transition hydraulic support, so as to avoid interference between the top beam 2 side guard plate and the swing beam side guard plate 8.

[0099] Referring to Figures 5-8 In some embodiments, the first lug seat 51 is a plurality of first lug seats 51, each first lug seat 51 comprises two first lug plates 511 arranged in parallel and spaced apart, the first lug plates 511 are connected to the swing beam top plate 54 and the swing beam front end plate 57, and an arc plate 512 is arranged between the two first lug plates 511. The arc plate 512 is used to connect the two first lug plates 511, so that the structural stability between them is better. The force borne by the first lug seat 51 can be dispersed step by step through the swing beam front end plate 57, the swing beam top plate 54 and the swing beam main rib plate 55, which can effectively avoid the problem of local stress concentration, thereby ensuring the structural stability of the first lug seat 51 and improving the structural stability of the connected parts.

[0100] Further, the swing beam 5 further comprises a plurality of second lug seats 52 and a plurality of third lug seats 53, the second lug seats 52 and the third lug seats 53 are connected to the swing beam 5 and located on the side of the swing beam 5 away from the support surface of the swing beam 5, the second lug seats 52 are used to be connected with the first driver 91, and the third lug seats 53 are used to be connected with the second driver 92, the second lug seat 52 comprises two second lug plates 521 arranged in parallel and at intervals, the second lug plates 521 are penetrated through the swing beam cover plate 56 and connected with the swing beam top plate 54, and at least one second lug plate 521 is attached to and fixed with the swing beam main rib plate 55, so that the structural strength and the lateral deviation resistance of the second lug plate 521 can be improved, and the force borne by the second lug seat 52 can be better dispersed through the swing beam main rib plate 55, so as to avoid local stress concentration. The third lug seat 53 comprises two third lug plates 531 arranged in parallel and at intervals, the third lug plates 531 are penetrated through the swing beam cover plate 56 and connected with the swing beam top plate 54, and at least one third lug plate 531 is attached to and fixed with the swing beam main rib plate 55, the second lug seat 52 and the third lug seat 53 are one-to-one corresponding and integrally formed. Thus the structural strength and the lateral deviation resistance of the third lug plate 531 can be improved, and the force borne by the third lug seat 53 can be better dispersed through the swing beam main rib plate 55, so as to avoid local stress concentration.

[0101] In the embodiment, the second lug seat 52 and the third lug seat 53 are integrally formed, which is convenient for integrated manufacturing, and after being connected with other components in the swing beam 5, the structural stability is better, and the stress performance is effectively improved.

[0102] Referring to Figures 5-8 , Figure 10 and Figure 11 , in some embodiments, the swing beam 5 further comprises a plurality of tail beam hinged lug plates 581, the plurality of tail beam hinged lug plates 581 are arranged in parallel and at intervals between the swing beam rear end plate 58 and the swing beam top plate 54. The tail beam hinged lug plate 581 is used to be hinged with the tail beam 6, so that the tail beam 6 can swing relative to the swing beam 5.

[0103] The tail beam 6 includes a tail beam top plate 61, tail beam side plates 62, tail beam main rib plates 63, tail beam cover plates 64, a tail beam front end plate 65, and a tail beam lip plate 66. One side of the tail beam top plate 61 (the upward end face shown in the figure) is a tail beam 6 support surface. A plurality of tail beam main rib plates 63 are arranged between two tail beam side plates 62. The tail beam side plates 62 and the tail beam main rib plates 63 are arranged in parallel and at intervals in a first direction (generally left-right direction shown in the figure) on the side of the tail beam top plate 61 away from the tail beam 6 support surface (the downward end face shown in the figure). The tail beam cover plates 64 and the tail beam top plate 61 are arranged opposite and parallel in a second direction (generally up-down direction shown in the figure). The tail beam cover plates 64 are arranged between the tail beam side plates 62 and the tail beam main rib plates 63 adjacent thereto, and between adjacent two tail beam main rib plates 63. The tail beam front end plate 65 and the tail beam lip plate 66 are arranged opposite and parallel in a third direction. The tail beam lip plate 66 is in the shape of a rectangular frame. The tail beam front end plate 65 and the tail beam lip plate 66 are respectively connected to both ends of the tail beam side plates 62, the tail beam main rib plates 63, the tail beam top plate 61, and the tail beam cover plates 64 in the third direction. The tail beam main rib plates 63 divide the inner cavity surrounded by the tail beam top plate 61, the tail beam cover plates 64, and the two tail beam side plates 62 into a plurality of sliding sub-chambers, which are configured as sliding chambers 67.

[0104] The side of the tail beam side plate 62 away from the tail beam top plate 61 extends out of the tail beam cover plate 64 to form a tail beam guard plate 621, which can improve the realization of the side covering of the tail beam 6 and improve the protection performance of the equipment located below the tail beam 6. A tail beam hinged lug seat 651 is arranged between the tail beam front end plate 65 and the tail beam top plate 61, which is used for rotating connection with the swing beam 5. It can be understood that the tail beam hinged lug seat 651 and the tail beam hinged lug plate 581 located on the swing beam 5 are connected together through a hinge shaft.

[0105] The tail beam 6 of the embodiment is in a box-shaped structure, has good overall structural stability, and can realize lightweight design, and optimizes the stress of different positions of the tail beam 6. A plurality of sliding sub-chambers are formed in the tail beam 6, which can realize the guidance and limiting of the plug-in plate 7 without affecting the overall structural strength of the tail beam 6, so that the structure stability of the plug-in plate 7 and the tail beam 6 is good, and the support and protection effect of the plug-in plate 7 and the tail beam 6 is improved.

[0106] The tail beam 6 is provided with a fourth lug seat 68 and a fifth lug seat 69, the fourth lug seat 68 is arranged for connecting with the second driver 92, and the fifth lug seat 69 is arranged for connecting with the third driver 93. The fourth lug seat 68 is arranged on the tail beam cover plate 64, and the fourth lug seat 68 comprises two fourth lug plates 681 arranged in parallel and spaced apart, the fourth lug plates 681 are connected with the tail beam cover plate 64, and a reinforcing plate 85 is arranged between the fourth lug plates 681 and the tail beam cover plate 64, one of the fourth lug plates 681 is arranged in an integral manner with the tail beam main rib plate 63, so as to improve the structural strength and lateral deviation resistance of the fourth lug plate 681, and the fourth lug plate 681 is constrained by the tail beam main rib plate 63, so as to better disperse the force borne by the fourth lug seat 68 through the tail beam main rib plate 63, and avoid local stress concentration. The fifth lug seat 69 is arranged in the sliding cavity 67, and the fifth lug seat 69 comprises two fifth lug plates 691 arranged in parallel and spaced apart, the fifth lug plates 691 are connected with the tail beam top plate 61 and the tail beam front end plate 65, and a connecting plate 692 is arranged between the fifth lug plate 691 and the tail beam main rib plate 63 adjacent to the fifth lug plate 691, so as to improve the structural stability of the fifth lug plate 691.

[0107] Referring to Figure 10 and Figure 11 In some embodiments, the tail beam main rib plate 63 is two to divide the inner cavity surrounded by the tail beam top plate 61, the tail beam cover plate 64 and the two tail beam side plates 62 into a first sliding sub-cavity 671, a second sliding sub-cavity 672 and a third sliding sub-cavity 673, the first sliding sub-cavity 671, the second sliding sub-cavity 672 and the third sliding sub-cavity 673 are configured as the sliding cavity 67, the third sliding sub-cavity 673 is located between the first sliding sub-cavity 671 and the second sliding sub-cavity 672, the fifth lug seat 69 is arranged in the third sliding sub-cavity 673, one side of the tail beam main rib plate 63 adjacent to the third sliding sub-cavity 673 is provided with a guide plate 631, the guide plate 631 and the tail beam top plate 61 define a sliding groove for limiting and guiding the plug-in plate 7, and the tail beam cover plate 64 between the two tail beam main rib plates 63 has an opening. Through the arrangement of the opening, the installation of the fifth lug seat 69 and the third driver 93 is facilitated, and the later maintenance is facilitated.

[0108] Referring to Figure 12The plug-in plate 7 comprises a first beam body 71, a second beam body 72, a coal blocking beam body 73, a plug-in plate lip plate 74 and a plug-in tooth 75. The coal blocking beam body 73 is located between the first beam body 71 and the second beam body 72. The first beam body 71, the second beam body 72 and the coal blocking beam body 73 are respectively arranged in different sliding sub-chambers. The first beam body 71 and the second beam body 72 are respectively arranged in the first sliding sub-chamber 671 and the second sliding sub-chamber 672. The coal blocking beam body 73 is arranged in the third sliding sub-chamber 673. In this way, the stability of the connecting structure between the plug-in plate 7 and the tail beam 6 can be improved. The tail beam 6 and the plug-in plate 7 can be guided without affecting the structural strength of the tail beam 6 and the plug-in plate 7, thereby ensuring the support and protection effect of the tail beam 6 and the plug-in plate 7. The first beam body 71 and the second beam body 72 are both box-shaped beams. The first beam body 71 and the second beam body 72 can be further provided with a reinforcing plate 85 to improve the structural stability. The plug-in teeth 75 are arranged on the plug-in plate lip plate 74 in a spaced manner. The plug-in plate lip plate 74 is connected to one end of the first beam body 71, the second beam body 72 and the coal blocking beam body 73. In this embodiment, the first beam body 71, the second beam body 72 and the coal blocking beam body 73 are connected together through the plug-in plate lip plate 74, thereby realizing synchronous stretching and contraction. When the coal is supported, the effect is better. Even if an individual part is damaged by impact, the use of other parts is not affected. The parts are easy to replace, and the maintenance cost is lower.

[0109] In this embodiment, the plug-in plate 7 and the tail beam 6 can ensure effective connection while improving the overall structural strength. The area of the plug-in plate 7 can be larger, and the stretching and contraction action is more stable, so that the plug-in plate 7 can meet the requirements of coal discharging and protection.

[0110] Further, the coal blocking beam body 73 comprises a coal blocking top plate 731, coal blocking side plates 732, coal blocking rib plates 733, coal blocking reinforcing ribs 734 and fixing plates 735, the coal blocking top plate 731 has a coal blocking support surface, the coal blocking side plates 732 are connected on both sides of the coal blocking top plate 731 in the first direction thereof, the coal blocking rib plates 733 are parallel to the coal blocking side plates 732 and are arranged on the side of the coal blocking top plate 731 away from the coal blocking support surface, the coal blocking reinforcing ribs 734 are connected between the coal blocking side plates 732 and the coal blocking rib plates 733 adjacent thereto and / or between adjacent two coal blocking rib plates 733, and the fixing plates 735 are connected to one end of the coal blocking top plate 731 close to the insertion plate lip plate 74, the fixing plates 735 and the coal blocking top plate 731 and the coal blocking side plates 732 form a fixed seat 736 in a box shape, the side of the coal blocking top plate 731 away from the coal blocking support surface is provided with a sixth ear seat 76, the sixth ear seat 76 is connected with the fixed seat 736, and a reinforcing plate 85 is arranged between the sixth ear seat 76 and the coal blocking side plate 732, and the sixth ear seat 76 is used for being connected with the third driver 93. In the embodiment, the structure of the coal blocking beam body 73 is reinforced by the box-shaped structure of the first beam body 71 and the second beam body 72, the lower part of the coal blocking beam body 73 is in an open structure, the installation of the third driver 93 is facilitated, the space utilization is improved, the extension direction of the third driver 93 is consistent with the extension direction of the coal blocking beam body 73 and the tail beam 6, the stability of the third driver 93 is improved, the piston rod of the third driver 93 is prevented from being bent and deformed under the lateral force, especially during the coal discharging process, the insertion plate 7 is in a high-frequency vibration state under the impact of the falling coal, the overall structure of the third driver 93, the tail beam 6 and the insertion plate 7 is stable, and the damage of the third driver 93 can be greatly reduced.

[0111] The first driver 91, the second driver 92, the third driver 93 and the fourth driver 94 in the embodiment of the application are arranged in parallel in two groups, so that the stability of the force can be better guaranteed, the components are prevented from being deviated, and the supporting effect is better. For example, the two groups of first drivers 91, the two groups of second drivers 92 and the two groups of third drivers 93 are arranged in a substantially symmetrical manner in the left-right direction shown in the figure, and the two groups of fourth drivers 94 are arranged in a substantially symmetrical manner in the length direction of the swing beam 5, so that the same two groups of drivers can be synchronously actuated to achieve more stable support and better overall protection effect.

[0112] Referring to Figures 1-19The super large mining height top coal transitional hydraulic support 100 of the embodiment of the present application comprises a base 1, a top beam 2, a rib protection device 4, a multi-stage linkage large window top coal releasing device 200 and a positive four-bar linkage device, the base 1 and the top beam 2 are provided with a front upright column 31 and a rear upright column 32, the top beam 2 has a first end and a second end; the rib protection device 4 is arranged at the first end of the top beam 2; the multi-stage linkage large window top coal releasing device 200 is the multi-stage linkage large window top coal releasing device 200 according to any one of the above embodiments, and the multi-stage linkage large window top coal releasing device 200 is rotatably connected to the second end of the top beam 2. The positive four-bar linkage device comprises a front linkage rod 34, a rear linkage rod 35 and an inclined beam 33, one end of the inclined beam 33 is rotatably connected to the top beam 2, and the second end of the inclined beam 33 is inclined towards the direction (the rear direction shown in the figure) close to the multi-stage linkage large window top coal releasing device 200, so that a passing space is formed between the front linkage rod 34 and the front upright column 31, and a passing space is also formed on the base 1 in front of the front upright column 31. Compared with the problem that the passing space behind the front upright column 31 in the related art is narrow, the width of the passing space between the front upright column 31 and the front linkage rod 34 in the embodiment is increased by more than 40%, and the safety of the passing space between the front upright column 31 and the front linkage rod 34 is better. The front linkage rod 34 and the rear linkage rod 35 are connected between the inclined beam 33 and the base 1 to form the positive four-bar linkage device. Preferably, the front linkage rod 34 and the rear linkage rod 35 can each be two, the two front linkage rods 34 are symmetrically arranged between the inclined beam 33 and the base 1 in the left-right direction, and the two rear linkage rods 35 are symmetrically arranged between the inclined beam 33 and the base 1 in the left-right direction, so as to improve the anti-side deviation capability of the top beam 2 and the base 1.

[0113] In the embodiment of the present application, the swing angle of the swing beam 5 rotating around the axis of the first ear seat 51 is 0-30 degrees, in other words, the swing angle of the swing beam 5 relative to the top beam 2 is 0-30 degrees, and the swing angle of the tail beam 6 rotating relative to the swing beam 5 is 0-25 degrees. When the posture of the multi-stage linkage large window top coal releasing device 200 is adjusted, the adjustment range is larger, and the matching with the rear scraper conveyor 300 is better, so as to realize top coal releasing of the transitional section and improve the top coal releasing rate of the transitional section, realize directional caving and efficient recovery of top coal.

[0114] Compared with the problems that the top coal recovery rate of the transitional hydraulic support position in the related art is less than 60%, and too much gangue mixed in causes the quality of coal to decrease, the super large mining height top coal transitional hydraulic support 100 of the embodiment of the present application can provide large window top coal releasing through multi-stage linkage, and the posture adjustment is more flexible, so as to effectively control the mixing of gangue, greatly improve the recovery rate of top coal and the quality of coal.

[0115] Compared with the related art, the passing space is safer, far away from the working face, and can be protected by the front stand 31, ensuring the safety of the staff, especially in the application in the working face with super large mining height.

[0116] The super large mining height top coal caving transition hydraulic support 100 provided by the embodiment of the present application adopts a positive four-bar linkage stabilizing mechanism to replace the traditional reverse four-bar linkage layout, which significantly improves the safety of the underground pedestrian space and equipment maintenance while ensuring the overall rigidity of the support.

[0117] The super large mining height top coal caving transition hydraulic support 100 provided by the embodiment of the present application is designed with a swing beam side guard plate 8, which adopts a compression spring 943 and a jack composite driving mechanism to realize unilateral automatic unfolding and hydraulic retraction, preventing coal gangue from falling from the tail of the hydraulic support, and avoiding interference with the rear scraper conveyor 300. The insert plate 7 integrates a coal blocking beam body 73 and a conical insert gear 75, which are precisely controlled by a guide plate 631 and a jack to reduce the insertion resistance of the coal gangue, and simultaneously realize dynamic sealing of the coal discharge opening and gangue interception function.

[0118] The super large mining height top coal caving transition hydraulic support 100 provided by the embodiment of the present application adopts a positive four-bar linkage stabilizing mechanism to replace the traditional reverse four-bar linkage layout, which significantly improves the safety of the underground pedestrian space and equipment maintenance while ensuring the overall rigidity of the support.

[0119] The super large mining height top coal caving transition hydraulic support 100 provided by the embodiment of the present application is designed with a swing beam side guard plate 8, which adopts a compression spring 943 and a jack composite driving mechanism to realize unilateral automatic unfolding and hydraulic retraction, preventing coal gangue from falling from the tail of the hydraulic support, and avoiding interference with the rear scraper conveyor 300. The insert plate 7 integrates a coal blocking beam body 73 and a conical insert gear 75, which are precisely controlled by a guide plate 631 and a jack to reduce the insertion resistance of the coal gangue, and simultaneously realize dynamic sealing of the coal discharge opening and gangue interception function.

[0120] The overall structure of the super large mining height caving coal transition hydraulic support 100 can keep compact form in the transportation state, occupies small space, has low gravity center, and has good structural stability; when working, each level assembly is unfolded through the sequential driving of the hydraulic system, and the super large mining height caving coal transition hydraulic support 100 has the functions of large mining height support, efficient caving and equipment protection, and is suitable for efficient mining of thick and complex coal seams.

[0121] The action principle of the multi-stage linkage large window caving device 200 in the super large mining height caving coal transition hydraulic support 100 is described below.

[0122] Referring to Figure 13 When the swing beam 5 swings relative to the top beam 2, one end of the first driver 91 is hinged to the transition hydraulic support base 1, and the push end is hinged to the second ear seat 52. The push rod of the first driver 91 is extended, which drives the swing beam 5 to rotate around the top beam 2 through the first ear seat 51, and the rotation angle θ1 can be 0-30°.

[0123] Referring to Figure 14 and Figure 15 , the retracting and unfolding actions of the swing beam side guard plate 8 are as follows: when the swing beam side guard plate 8 located on the left side of the swing beam 5 is in the retracted state, and the swing beam side guard plate 8 located on the right side of the swing beam 5 is in the unfolded state, at this time, the fixed pin 945 is installed between the push rod 942 connected with the swing beam side guard plate 8 on the left side of the swing beam 5 and the swing beam 5, the left swing beam side guard plate 8 is locked, and the fourth driver 94 is in the extended state. In order to realize the retraction of the side guard plate located on the right side of the swing beam 5, the fourth driver 94 is driven to retract, which drives the push rod 942 connected with the swing beam side guard plate 8 on the right side of the swing beam 5 to retract into the second driving cavity 592, at the same time, the guide rod 944 connected with the swing beam side guard plate 8 on the right side of the swing beam 5 is retracted into the first driving cavity 591, the spring 943 is compressed and shortened, until the swing beam side guard plate 8 located on the right side of the swing beam 5 is attached to the right side of the swing beam 5, the action stops, and the retraction of the swing beam side guard plate 8 on the right side of the swing beam 5 is completed.

[0124] When the one-way lock of the fourth driver 94 is opened (the push rod is in a free state), the compressed spring 943 expands under the action of elastic potential, and then pushes the right side swing beam side guard plate 8 guide rod 944 to extend in the first driving cavity 591, and then drives the right side swing beam side guard plate 8 to move relative to the swing beam 5 to the right side, at the same time, the push rod of the fourth driver 94 is extended under the driving of the swing beam side guard plate 8 and the push rod 942, until the swing beam 5 side guard is attached to the side guard plate of the adjacent hydraulic support on the right side, the action is completed, and the expansion of the swing beam side guard plate 8 on the right side of the swing beam 5 is completed.

[0125] Referring to Figure 16When the tail beam 6 rotates relative to the swing beam 5, one end of the second driver 92 is hinged to the third lug seat 53 of the swing beam 5, and the push end of the second driver 92 is hinged to the fourth lug seat 68 of the tail beam 6. The push rod of the second driver 92 is extended, and the tail beam 6 rotates relative to the swing beam 5 around the rotation pair formed by the tail beam hinge lug plate 581 and the tail beam hinge lug seat 651, and the rotation angle θ2 of the tail beam 6 relative to the swing beam 5 can be 0-25°.

[0126] Referring to Figure 17 The first beam body 71 and the second beam body 72 of the plug-in plate 7 are installed in the first sliding sub-chamber 671 and the second sliding sub-chamber 672 of the tail beam 6, and a certain fitting gap is reserved to ensure smooth sliding; the coal blocking beam body 73 is integrally inserted into the third sliding sub-chamber 673 of the tail beam 6, and can smoothly slide under the auxiliary guiding action of the guide plate 631 in the third sliding sub-chamber 673; the fixed end of the two third drivers 93 is hinged to the fifth lug seat 69 in the tail beam 6, and the push end of the third driver 93 is hinged to the sixth lug seat 76 of the coal blocking beam body 73, and the main body structure of the third driver 93 is located in the space below the coal blocking beam body 73 to avoid motion interference. When the third driver 93 is extended, it drives the plug-in plate 7 to slide in the sliding chamber 67 of the tail beam 6 as a whole, and the extension distance L1 of the plug-in plate 7 relative to the tail beam 6 can control the size of the coal discharge window, and by controlling the reciprocating movement of the plug-in plate 7, multiple interval coal discharges can be realized.

[0127] Referring to Figure 18In the process of blocking gangue, the first driver 91 extends, and further drives the swing beam 5 to swing upward, the fourth driver 94 is in a free state, and the swing beam side guard plate 8 is expanded under the elastic potential action of the spring 943. For example, when the swing beam side guard plate 8 on the right side of the swing beam 5 is expanded, the swing beam side guard plate 8 on the left side of the swing beam 5 is locked, the guide rod 944 connected with the swing beam side guard plate 8 on the right side of the swing beam 5 extends from the first driving cavity 591 under the action of the spring 943, and further simultaneously drives the fourth driver 94 and the push rod 942 on the right side of the fourth driver 94 to extend, until the swing beam side guard plate 8 on the right side of the swing beam 5 is close to the side guard plate of the hydraulic support adjacent to the right side, to prevent gangue leakage between supports. The second driver 92 extends, and the tail beam 6 rotates upward through the rotating pair formed by the tail beam hinged lug plate 581 and the tail beam hinged lug seat 651. The third driver 93 extends, and the third driver 93 pushes the blocking beam body 73 to slide in the third sliding sub-cavity 673, so that the first beam body 71 and the second beam body 72 simultaneously slide in the corresponding sliding sub-cavity, and drive the whole insertion plate 7 to slide in the sliding cavity 67 relative to the tail beam 6. Finally, a three-stage linkage shield system of the swing beam 5-tail beam 6-insertion plate 7 is formed, which protects the power part of the rear scraper conveyor 300 and effectively protects the gangue in the goaf, to prevent the gangue from entering the scraper groove of the rear scraper conveyor 300. The above four actions can be operated simultaneously, and the action sequence can be set by the controller.

[0128] Referring to Figure 19 In the process of discharging coal, the first driver 91 retracts, and further drives the swing beam 5 to swing downward, the fourth driver 94 retracts, the swing beam side guard plate 8 on the right side of the swing beam 5 is retracted under the drive of the push rod 942, and at the same time, the guide rod 944 and the spring 943 connected with the swing beam side guard plate 8 on the right side of the swing beam 5 are retracted into the first driving cavity 591. The retraction size can be determined according to requirements, for example, all retraction or only partial retraction, to ensure the effective supporting range. The second driver 92 retracts, and the tail beam 6 rotates downward through the rotating pair formed by the tail beam hinged lug plate 581 and the tail beam hinged lug seat 651. The third driver 93 retracts, and the third driver 93 pulls the blocking beam body 73 to slide in the third sliding sub-cavity 673, so that the first beam body 71 and the second beam body 72 simultaneously slide in the corresponding sliding sub-cavity, and drive the whole insertion plate 7 to slide in the sliding cavity 67 relative to the tail beam 6. The sliding distance of the insertion plate 7 in the direction close to the tail beam 6 can be adjusted according to different stages of discharging coal, or adjusted according to the mixed amount of gangue. At this time, the discharging coal window is opened, and the top coal above the tail of the top coal transition hydraulic support is smoothly discharged into the scraper groove of the rear scraper conveyor 300, and the remaining protection space of the large window coal discharging mechanism can ensure the safety of the rear scraper conveyor 300, avoiding mechanical interference. The above four actions can be operated simultaneously, and the action sequence can be set by the controller.

[0129] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements indicated thereby must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0130] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated thereby. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0131] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0132] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0133] In this disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. The illustrative appearances of the above-mentioned terms in various places in the specification are not necessarily referred to the same embodiment or example. Moreover, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples. Furthermore, the terminology "comprising" is used in the disclosure as comprising but not limited to, that is, it is open-ended and does not exclude the presence of additional features, structures, materials, or characteristics.

[0134] Although the embodiments of the present disclosure have been shown and described above, it should be understood by those having ordinary skill in the art that the above-mentioned embodiments are exemplary and should not be construed as limiting the present disclosure, and those skilled in the art can make changes, modifications, replacements, and variations to the above-mentioned embodiments within the scope of the present disclosure.

Claims

1. A multi-stage linkage large window coal and ore drawing device, characterized in that, The application relates to a swing beam and tail beam structure, comprising: a swing beam and a tail beam rotatably connected with the swing beam, the end of the swing beam away from the tail beam being provided with a first lug, and the tail beam being provided with a sliding cavity; a first driver connected with the swing beam and used for driving the swing beam to rotate around the axis of the first lug; a second driver connected between the swing beam and the tail beam and used for driving the tail beam to swing relative to the swing beam; a plug plate and a third driver, at least a section of the plug plate being arranged in the sliding cavity and being movable relative to the tail beam, and the third driver being connected between the plug plate and the tail beam to drive the plug plate to move relative to the tail beam; swing beam side guards and a fourth driver, the two swing beam side guards being arranged on the two sides of the swing beam in the width direction of the swing beam and being movable relative to the swing beam in the width direction of the swing beam, and the fourth driver being connected between the swing beam side guards and the swing beam to drive the swing beam side guards to move relative to the swing beam; the tail beam comprising a tail beam top plate, tail beam side plates, tail beam main rib plates, a tail beam cover plate, a tail beam front end plate and a tail beam lip plate, one side of the tail beam top plate being a tail beam support surface, the tail beam main rib plates being arranged between the tail beam side plates in a first direction, the tail beam side plates and the tail beam main rib plates being arranged on the side of the tail beam top plate away from the tail beam support surface in parallel and at intervals, the tail beam cover plate and the tail beam top plate being arranged in a second direction in parallel and oppositely, the tail beam cover plate being arranged between the tail beam side plates and the tail beam main rib plates adjacent to the tail beam side plates and between two adjacent tail beam main rib plates, the tail beam front end plate and the tail beam lip plate being arranged in a third direction in parallel and oppositely, the tail beam lip plate being in the shape of a rectangular frame, and the tail beam front end plate and the tail beam lip plate being connected at the two ends of the tail beam side plates, the tail beam main rib plates, the tail beam top plate and the tail beam cover plate in the third direction respectively, and the tail beam main rib plates dividing the inner cavity formed by the tail beam top plate, the tail beam cover plate and the two tail beam side plates into a plurality of sliding sub-cavities, and the sliding sub-cavities constituting the sliding cavity; the tail beam being provided with a fourth lug and a fifth lug, the fourth lug being used for being connected with the second driver, and the fifth lug being used for being connected with the third driver; the first direction, the second direction and the third direction being orthogonal to each other; the plug plate comprising a first beam body, a second beam body, a coal blocking beam body, a plug plate lip plate and plug teeth, the coal blocking beam body being located between the first beam body and the second beam body, the first beam body, the second beam body and the coal blocking beam body being arranged in different sliding sub-cavities respectively, the first beam body and the second beam body both being box-shaped beams, the plug teeth being arranged on the plug plate lip plate in intervals, and the plug plate lip plate being connected at one end of the first beam body, the second beam body and the coal blocking beam body. The coal blocking beam body comprises a coal blocking top plate, coal blocking side plates, coal blocking rib plates, coal blocking reinforcing ribs and fixing plates, the coal blocking top plate has a coal blocking support surface, the coal blocking side plates are connected to both sides of the coal blocking top plate in a first direction thereof, the coal blocking rib plates are parallel to the coal blocking side plates and are arranged on a side of the coal blocking top plate away from the coal blocking support surface, the coal blocking reinforcing ribs are connected between the coal blocking side plates and the coal blocking rib plates adjacent to the coal blocking side plates and / or connected between two adjacent coal blocking rib plates, a plurality of the fixing plates are connected to one end of the coal blocking top plate close to the insertion plate lip plate, the fixing plates and the coal blocking top plate and the coal blocking side plates form a fixed seat of a box type structure, a sixth lug seat is arranged on a side of the coal blocking top plate away from the coal blocking support surface, the sixth lug seat is connected to the fixed seat, a reinforcing plate is arranged between the sixth lug seat and the coal blocking side plate, and the sixth lug seat is used to be connected to the third driver.

2. The multi-stage linkage large window coal discharge device according to claim 1, characterized in that, The swing beam has a first driving cavity and a second driving cavity, and the axis directions of the first driving cavity and the second driving cavity are consistent with the width direction of the swing beam. The fourth driver comprises a swing beam side guard plate jack, a spring, two guide rods and two push rods, the spring and the guide rods are arranged in the first driving cavity, two ends of the spring are respectively connected to one end of the two guide rods, and the second ends of the two guide rods are respectively connected to the two swing beam side guard plates. The swing beam side guard plate jack and the push rods are arranged in the second driving cavity, two ends of the swing beam side guard plate jack are respectively connected to one end of the two push rods, and the second ends of the two push rods are respectively connected to the two swing beam side guard plates.

3. The multi-stage linkage large window coal discharge device according to claim 2, characterized in that, The first driving cavities and the second driving cavities are multiple, and the multiple first driving cavities and the multiple second driving cavities are arranged at intervals along the length direction of the swing beam. And / or, the push rods and the swing beam and the guide rods and the swing beam are detachably connected with fixing pins, and the swing beam is provided with fixing pin seats connected with the fixing pins.

4. The multi-stage linkage large window coal discharge device according to claim 2 or 3, characterized in that, The swing beam comprises: a swing beam top plate having a swing beam support surface; a plurality of swing beam main rib plates arranged in parallel in a first direction, the swing beam main rib plates being connected to a side of the swing beam top plate away from the swing beam support surface and arranged perpendicularly to the swing beam top plate, and a reinforcing plate being arranged between the swing beam main rib plates and the swing beam top plate; a swing beam cover plate arranged in parallel with the swing beam top plate in a second direction, the swing beam cover plate being connected between two adjacent swing beam main rib plates; a swing beam front end plate and a swing beam rear end plate arranged in parallel and oppositely in a third direction, the swing beam front end plate and the swing beam rear end plate being respectively connected to both ends of the swing beam main rib plates, the swing beam top plate and the swing beam cover plate in the third direction to form a box type structure; a plurality of sleeves extending in the first direction, the sleeves being arranged on the plurality of swing beam main rib plates, and the inner cavities of the sleeves being configured as the first driving cavities or the second driving cavities. The first direction, the second direction and the third direction are orthogonal to each other.

5. The multi-stage linkage large window coal discharge device according to claim 4, characterized in that, The top plate of the swing beam comprises a main support plate and two auxiliary support plates, the two auxiliary support plates are arranged on the two sides of the main support plate in the first direction, the main support plate has a main support surface, the auxiliary support plates have auxiliary support surfaces, the main support surface protrudes from the two auxiliary support surfaces, the main support surface and the auxiliary support surfaces jointly form the swing beam support surface, the swing beam side guard plate abuts on the auxiliary support surface and is movable in the first direction; The first ear seat is provided in plurality, the first ear seat comprises two first ear plates arranged in parallel and at intervals, the first ear plates are connected with the swing beam top plate and the swing beam front end plate, and an arc plate is arranged between the two first ear plates; The second ear seat and the third ear seat are connected on the swing beam and located on the side of the swing beam away from the swing beam support surface, the second ear seat is used for being connected with the first driver, the third ear seat is used for being connected with the second driver, the second ear seat comprises two second ear plates arranged in parallel and at intervals, the second ear plates are arranged through the swing beam cover plate and connected with the swing beam top plate, and at least one second ear plate is fitted and fixed with the swing beam main rib plate, the third ear seat comprises two third ear plates arranged in parallel and at intervals, the third ear plates are arranged through the swing beam cover plate and connected with the swing beam top plate, and at least one third ear plate is fitted and fixed with the swing beam main rib plate, the second ear seat and the third ear seat are one-to-one corresponding and integrally formed; A plurality of tail beam hinged ear plates are arranged in parallel and at intervals between the swing beam rear end plate and the swing beam top plate; The swing beam side guard plate is provided in two and arranged on the two sides of the swing beam in the first direction, the swing beam side guard plate comprises a guard plate top plate, a guard plate side plate and a guard plate lining plate, the guard plate top plate and the guard plate side plate are connected and arranged in L shape, the guard plate top plate is abutted and fitted on the swing beam support surface, the guard plate side plate is located on the side of the swing beam in the first direction, the guard plate lining plate is connected with the guard plate side plate in parallel at one end of the guard plate side plate, the guard plate lining plate is connected with the guard plate top plate and arranged in L shape, the outer wall surface of the guard plate lining plate is lower than the outer wall surface of the guard plate side plate to form a sunken platform, and the guard plate lining plate and / or the guard plate side plate are provided with a reinforcing plate and a connecting seat connected with the fourth driver.

6. The multi-stage linkage large window coal discharge gate according to claim 1, characterized in that, The fourth lug seat is arranged on the tail beam cover plate, and the fourth lug seat comprises two fourth lug plates arranged in parallel and at intervals, the fourth lug plate is connected with the tail beam cover plate, and a reinforcing plate is arranged between the fourth lug plate and the tail beam cover plate, and one of the fourth lug plates is arranged in an integrated mode with the tail beam main rib plate; the fifth lug seat is arranged in the sliding cavity, and the fifth lug seat comprises two fifth lug plates arranged in parallel and at intervals, the fifth lug plate is connected with the tail beam top plate and the tail beam front end plate, and a connecting plate is arranged between the fifth lug plate and the tail beam main rib plate adjacent to the fifth lug plate; And / or, the tail beam main rib plate is two to divide the inner cavity surrounded by the tail beam top plate, the tail beam cover plate and the two tail beam side plates into a first sliding sub-cavity, a second sliding sub-cavity and a third sliding sub-cavity, the first sliding sub-cavity, the second sliding sub-cavity and the third sliding sub-cavity are configured as the sliding cavity, the third sliding sub-cavity is located between the first sliding sub-cavity and the second sliding sub-cavity, the fifth lug seat is arranged in the third sliding sub-cavity, one side of the tail beam main rib plate adjacent to the third sliding sub-cavity is provided with a guide plate, and the guide plate and the tail beam top plate define a sliding groove to limit and guide the plug plate, and the tail beam cover plate between the two tail beam main rib plates has an opening; And / or, one side of the tail beam side plate away from the tail beam top plate extends out of the tail beam cover plate to be configured as a tail beam guard plate, a tail beam hinged lug seat is arranged between the tail beam front end plate and the tail beam top plate, and the tail beam hinged lug seat is used for rotating connection with the swing beam.

7. The multi-stage linkage large window coal discharge gate according to claim 1, characterized in that, The first driver, the second driver, the fourth driver and the third driver are arranged in parallel. And / or, the swing angle of the swing beam rotating around the axis of the first lug seat is 0-30 degrees, and the swing angle of the tail beam relative to the swing beam is 0-25 degrees.

8. An ultra-high-seam-height caving coal transition hydraulic support, characterized in that, Comprise: a base; a top beam, the base and the top beam are provided with front and rear columns, the top beam has a first end and a second end; a guard device, the guard device is arranged at the first end of the top beam; a multi-stage linkage large window coal discharge device, the multi-stage linkage large window coal discharge device is the multi-stage linkage large window coal discharge device according to any one of claims 1-7, and the multi-stage linkage large window coal discharge device is rotatably connected to the second end of the top beam; a positive four-bar linkage device, the positive four-bar linkage device comprises a front connecting rod, a rear connecting rod and an inclined beam, one end of the inclined beam is rotatably connected with the top beam, the second end of the inclined beam is inclined towards the direction close to the multi-stage linkage large window coal discharge device, and the front connecting rod and the rear connecting rod are connected between the inclined beam and the base to constitute the positive four-bar linkage device.

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