Hydraulic support bottom support device for fully-mechanized caving face with super large mining height

Abstract

The application discloses a hydraulic support bottom support device for an ultra-large mining height fully-mechanized caving face, which comprises a seat body assembly, a front support assembly and a rear support assembly. The seat body assembly comprises a first support seat, a second support seat and a cross component, and the cross component is connected between the first support seat and the second support seat. The front support assembly comprises a front upright column, a rear upright column and a connecting rod component, the first support seat and the second support seat are each provided with the front upright column and the rear upright column, the connecting rod component is connected with the cross component, the connecting rod component and the front upright column have a rear passing space therebetween, and the front upright column has a front passing space on the front side. The rear part of each of the first support seat and the second support seat is provided with the rear support assembly, and the rear support assembly comprises a base and a rear support driver. The support stability of the application is good, the control of the coal drawing device of the hydraulic support is more flexible and stable, large-window and large-flow coal drawing can be realized, the application can expand a larger passing space for maintenance and emergency escape, and the safety is good.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of hydraulic support, and particularly relates to a bottom support device of a hydraulic support for an ultra-large mining height fully-mechanized caving face. BACKGROUND

[0002] In recent years, the ultra-large mining height fully-mechanized caving face is gradually applied to the mining of super-thick coal seams, and especially when the mining height is more than 7 meters, the daily output of the face is further broken through. However, the top coal transitional hydraulic support in the related art is mostly applied to the lower mining height fully-mechanized caving face, and the supporting height cannot meet the requirements of the current ultra-large mining height fully-mechanized caving face. If the hydraulic support in the related art is enlarged proportionally, the stability of the hydraulic support will be seriously affected. On the one hand, the size and weight of the hydraulic support are large, the gravity center of the equipment is not easy to control, and the bearing capacity of the parts is put to a greater test, and on the other hand, when the ultra-large mining height fully-mechanized caving face is operated, the coal material falling range is larger when the coal is cut, which will invade the traditional pedestrian passage space, and seriously affect the equipment maintenance efficiency and emergency safety. Therefore, the hydraulic support in the related art is difficult to achieve a balance in supporting strength, unfolding space, and top coal recovery rate. SUMMARY

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

[0004] To this end, the embodiment of the present application proposes a bottom support device of a hydraulic support for an ultra-large mining height fully-mechanized caving face, which has good support stability, sufficient passing space, and good safety.

[0005] The bottom support device of the hydraulic support for the ultra-large mining height fully-mechanized caving face in the embodiment of the present application comprises:

[0006] a seat body assembly, the seat body assembly comprising a first support seat, a second support seat, and a cross-connection part, the first support seat and the second support seat being arranged side by side and spaced apart in the left-right direction, and the cross-connection part being connected between the first support seat and the second support seat;

[0007] a front support assembly, the front support assembly comprising a front upright column, a rear upright column, and a connecting rod part, the first support seat and the second support seat each being provided with the front upright column and the rear upright column, the front upright column and the rear upright column on the same support seat being arranged spaced apart in the front-rear direction, the connecting rod part being connected with the cross-connection part, the connecting rod part and the front upright column having a rear passing space therebetween, and the front upright column having a front passing space on the front side thereof;

[0008] The rear support assembly is provided at the rear of both the first support base and the second support base. The rear support assembly includes a base and a rear support driver. The base is located on the rear side of the rear column and extends in the vertical direction. The rear support driver is connected to the upper end of the base away from the seat assembly.

[0009] In the hydraulic support bottom support device for ultra-high fully mechanized longwall mining faces of this invention, the front support assembly supports the top beam of the hydraulic support, and the rear support assembly supports the coal discharge device, thereby ensuring that the hydraulic support has sufficient deployment space. Through the design of the rear support assembly, the center of gravity height of the rear support actuator can be adjusted, reducing the size and weight of the rear support actuator. The front column, rear column, and rear support assembly are located on both sides of the hydraulic support in the left-right direction and arranged sequentially along the general front-back direction. The connecting rod component is located in the middle of the hydraulic support. This not only ensures the stability of the hydraulic support under front-back force but also improves the hydraulic support's anti-lateral bearing capacity and overall force stability. Simultaneously, the rear support actuator provides better support stability and more flexible control for the coal discharge device, enabling large-window, high-flow coal discharge, with particularly outstanding performance on hydraulic supports for top coal caving transitions. Adjusting the positional relationship between the connecting rod component and the front column expands the passage space for maintenance and emergency escape, increasing the distance between personnel and the longwall mining face and preventing injury from falling coal.

[0010] In some specific embodiments, the linkage component includes a support beam, a first link and a second link, wherein the first link and the second link are arranged at intervals in the front-rear direction between the support beam and the bridging component;

[0011] The support beam extends in the front-rear direction, and the height of the end of the support beam adjacent to the front column is higher than the height of the end of the support beam adjacent to the rear column, so that the rear passage space is formed between the support beam, the first connecting rod and the front column.

[0012] In some specific embodiments, there are multiple first connecting rods and multiple second connecting rods, with multiple first connecting rods arranged side by side in the left-right direction and multiple second connecting rods arranged side by side in the left-right direction. The first connecting rods and the second connecting rods are rotatably connected to the support beam and the bridging component.

[0013] And / or, the supporting beam, the first connecting rod and the second connecting rod are all box beams.

[0014] In some specific embodiments, both the first support base and the second support base include:

[0015] Seat base plate;

[0016] a seat outer plate and a seat inner plate, the seat outer plate and the seat inner plate are parallel and spaced apart in the left-right direction, and the seat outer plate and the seat inner plate are connected to the seat bottom plate to form a seat inner cavity;

[0017] a seat middle support plate, the seat middle support plate is arranged in the seat inner cavity, the seat middle support plate is spaced apart from the seat bottom plate in the up-down direction to divide the seat inner cavity into an upper chamber and a lower chamber, and a plurality of lower rib plates are arranged in the lower chamber;

[0018] a front column socket seat and a rear column socket seat, the front column socket seat and the rear column socket seat are spaced apart in the front-rear direction on the seat middle support plate, and a semispherical sink is arranged on the front column socket seat and the rear column socket seat, the front column is connected with the front column socket seat, and the rear column is connected with the rear column socket seat.

[0019] In some embodiments, a seat cover plate, a rear step plate and a front step plate are further included, the seat cover plate is arranged on the side of the seat middle support plate away from the seat bottom plate, the seat cover plate is located between the front column socket seat and the rear column socket seat, a plurality of upper rib plates are arranged in the upper chamber between the seat cover plate and the seat middle support plate, the rear step plate is arranged on the seat cover plate of the first support seat and the second support seat, and the rear step plate is located below the rear passing space;

[0020] the front step plate is arranged on the first support seat and the second support seat, the front step plate is located on the side of the front column socket seat away from the rear column socket seat, and the front step plate is located below the front passing space.

[0021] In some embodiments, the cross-connection component includes:

[0022] a first connecting plate, the first connecting plate is arranged between the first support seat and the second support seat, and is connected with the seat inner plate and the seat outer plate in the first support seat and the second support seat, and the first connecting plate is arranged adjacent to the front column;

[0023] a side support plate and a middle support plate, the side support plate is arranged above the rear side of the seat inner plate of the first support seat and the second support seat, the middle support plate is arranged between the two side support plates, the side support plate and the middle support plate are arranged side by side and spaced apart in the left-right direction, a plurality of connecting holes are arranged between the side support plate and the middle support plate, and the connecting rod component is connected with the connecting holes;

[0024] a second connecting plate, the second connecting plate is arranged between the side support plate and the middle support plate, and / or the second connecting plate is arranged between the two side support plates.

[0025] In some embodiments, the inner plate of the first support seat and the inner plate of the second support seat each has an inner side baffle part above the rear part of the inner plate, and the inner side baffle part is fixedly attached to the side support plate.

[0026] The inner side baffle part is spaced apart from the front pillar socket seat in the front-rear direction, and the cover plate is at least partially overlapped with the inner side baffle part in the left-right direction.

[0027] In some embodiments, the base comprises:

[0028] A plurality of main rib plates, the plurality of main rib plates are arranged side by side and spaced apart in the left-right direction, and the main rib plates are located between the inner plate and the outer plate of the corresponding first support seat or the second support seat;

[0029] A plurality of third connecting plates, part of the plurality of third connecting plates are arranged between two adjacent main rib plates, and another part of the plurality of third connecting plates are arranged between the inner plate and the adjacent main rib plate, and between the outer plate and the adjacent main rib plate;

[0030] The outer plate of the first support seat and the outer plate of the second support seat each has an outer side baffle part above the rear part of the outer plate, and the upper end of the outer side baffle part is adjacent to the upper end of the main rib plate.

[0031] In some embodiments, a pushing and moving assembly is further included, which is connected between the first support seat and the second support seat, and the pushing and moving assembly comprises:

[0032] A frame body having a connecting head at the front end of the frame body;

[0033] A push-pull driver, a first end of the push-pull driver is connected to the front end of the seat body assembly, a second end of the push-pull driver is connected to the rear end of the frame body, and the push-pull driver is used to drive the relative movement of the frame body and the seat body assembly in the front-rear direction;

[0034] A bottom lifting driver, a first end of the bottom lifting driver is connected to the front end of the seat body assembly, a second end of the bottom lifting driver is abutted to the upper end surface of the frame body, and the second end of the bottom lifting driver is movable relative to the frame body in the front-rear direction, and a limiting member is provided between the seat body assembly and the bottom lifting driver to enable the bottom lifting driver to stretch and contract in the up-down direction.

[0035] In some embodiments, the limiting member comprises a sliding groove and a sliding block, the sliding groove is arranged on the seat body assembly, the sliding block is arranged on the bottom lifting driver, and the sliding block is clamped in the sliding groove.

[0036] And / or, the frame body comprises a frame bottom plate, frame side plates and a frame cover plate, two of the frame side plates are connected in parallel and spaced apart on the frame bottom plate along the left-right direction, the rear end of each of the two frame side plates is provided with a rear backing plate to form a rear hinged ear seat, the frame cover plate is connected between the two frame side plates, the frame cover plate comprises a first section, a second section and a third section connected in sequence from front to back, the first section and the third section are parallel to the horizontal plane, and the first section is higher than the third section, the second section is an inclined section and is connected between the first section and the second section, the frame bottom plate, the frame side plates and the frame cover plate form a frame inner cavity, an inner frame rib plate is arranged in the frame inner cavity, the front end of the frame bottom plate and the frame cover plate is provided with a front backing plate, the connecting head is connected with the front backing plate, and a hoop is arranged outside the front end of the frame bottom plate and the frame cover plate. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 FIG. 1 is a perspective view of a hydraulic support bottom support device for an ultra-high fully-mechanized caving mining face according to an embodiment of the present application.

[0038] Figure 2 FIG. 2 is a perspective view of the hydraulic support bottom support device for the ultra-high fully-mechanized caving mining face according to the embodiment of the present application from another angle.

[0039] Figure 3 FIG. 3 is a sectional view of a seat body assembly and a rear support assembly according to the embodiment of the present application.

[0040] Figure 4 FIG. 4 is a sectional view of a cross-connection component of the seat body assembly according to the embodiment of the present application.

[0041] Figure 5 FIG. 5 is a connection diagram of the seat body assembly and a push-moving assembly according to the embodiment of the present application.

[0042] Figure 6 FIG. 6 is a schematic view of a frame body in the push-moving assembly according to the embodiment of the present application.

[0043] Figure 7 FIG. 7 is a sectional view of the frame body in the push-moving assembly according to the embodiment of the present application.

[0044] Figure 8 FIG. 8 is an exploded view of the frame body in the push-moving assembly according to the embodiment of the present application.

[0045] Figure 9 FIG. 9 is a schematic view of the hydraulic support bottom support device for the ultra-high fully-mechanized caving mining face according to the embodiment of the present application in a lifting state.

[0046] Figure 10is a state schematic view of a hydraulic support bottom support device for an ultra-high cutting height fully-mechanized caving face of an embodiment of the present application when pushing a front scraper conveyor.

[0047] Figure 11 is a state schematic view of a hydraulic support bottom support device for an ultra-high cutting height fully-mechanized caving face of an embodiment of the present application when moving forward.

[0048] Reference signs:

[0049] 1, seat body assembly;

[0050] 11, first support seat; 111, seat bottom plate; 112, seat outer plate; 1121, outer side baffle part; 113, seat inner plate; 1131, inner side baffle part; 114, seat middle support plate; 115, front column socket seat; 1151, sink; 116, rear column socket seat; 117, seat cover plate; 1181, lower rib plate; 1182, upper rib plate; 119, sliding groove;

[0051] 12, second support seat;

[0052] 13, cross-connection component; 131, first connecting plate; 132, side support plate; 133, middle support plate; 134, second connecting plate;

[0053] 14, rear step plate;

[0054] 15, front step plate;

[0055] 2, front support assembly;

[0056] 21, front upright column; 22, rear upright column;

[0057] 23, connecting rod component; 231, support beam; 232, first connecting rod; 233, second connecting rod;

[0058] 3, rear support assembly;

[0059] 31, base; 311, main rib plate; 312, third connecting plate;

[0060] 32, rear support driver;

[0061] 4, pushing assembly;

[0062] 41, frame body; 411, frame bottom plate; 412, frame side plate; 413, frame cover plate; 4131, first section; 4132, second section; 4133, third section; 414, rear pad plate; 415, frame inner rib plate; 416, front pad plate; 417, hoop; 418, connecting head;

[0063] 42, push-pull driver;

[0064] 43, lifting base driver; 431, sliding block; 432, top seat;

[0065] 5, roof beam;

[0066] 6, coal discharging device. DETAILED DESCRIPTION

[0067] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0068] A hydraulic support bottom support device for an ultra-high fully-mechanized caving face is described below.

[0069] Referring to Figures 1 to 11 A hydraulic support bottom support device for an ultra-high fully-mechanized caving face includes a seat body assembly 1, a front support assembly 2, and a rear support assembly 3.

[0070] The seat body assembly 1 includes a first support seat 11, a second support seat 12, and a cross-connection component 13. The first support seat 11 and the second support seat 12 are arranged side by side and spaced apart in the left-right direction, and the cross-connection component 13 is connected between the first support seat 11 and the second support seat 12. The first support seat 11 and the second support seat 12 can each be a box girder type support seat, which is spliced by multiple plates to form a box girder structure, and a support plate is arranged in the box girder to reduce the total weight while ensuring the structural stability and sufficient load capacity. The first support seat 11 and the second support seat 12 are arranged substantially symmetrically in the left-right direction, and the cross-connection component 13 is used to connect the first support seat 11 and the second support seat 12 together, thereby forming a seat body assembly 1 with stable structure, and forming a mounting space in the middle of the seat body assembly 1 to facilitate subsequent installation of a pushing assembly 4.

[0071] The front support assembly 2 includes a front upright 21, a rear upright 22, and a connecting rod component 23. The first support seat 11 and the second support seat 12 each have a front upright 21 and a rear upright 22 arranged thereon. The front upright 21 and the rear upright 22 arranged on the same support seat are arranged spaced apart in the front-rear direction. The connecting rod component 23 is connected with the cross-connection component 13. The seat body assembly 1 between the connecting rod component 23 and the front upright 21 has a rear passage space. The seat body assembly 1 on the front side of the front upright 21 has a front passage space.

[0072] The rear passage space is formed between the connecting rod component 23 and the front upright 21 of the present embodiment. When the front passage space is occupied by the coal material collapsed from the fully-mechanized caving face, the workers can pass through the rear passage space. The rear passage space of the present embodiment not only can be used for emergency, but also can be used for equipment maintenance, which ensures the normal, stable, and efficient operation of the work, and has better practicability.

[0073] The embodiment of the present application can expand a larger passing space to facilitate maintenance and emergency escape, improve the distance between the passing personnel and the fully mechanized caving face, and avoid being injured by the collapsed coal.

[0074] In the embodiment, the number of the front upright columns 21 and the rear upright columns 22 is two, the front of the first support seat 11 and the second support seat 12 is provided with the front upright column 21, and the rear of the first support seat 11 and the second support seat 12 is provided with the rear upright column 22, so that the load borne by the roof beam 5 can be transmitted to the first support seat 11 and the second support seat 12 through the front upright column 21 and the rear upright column 22.

[0075] The connecting rod component 23 is connected between the roof beam 5 and the cross component 13 of the seat body assembly 1, which not only can maintain the stability of the working space during the lifting of the roof beam 5, but also can better bear the lateral force, prevent the hydraulic support from tilting or deviating, and ensure the stability of the whole. When the roof pressure changes, the supporting effect of the roof beam 5 can be ensured, and the adaptability to different geological conditions can be enhanced.

[0076] In the embodiment, the rear of the first support seat 11 and the second support seat 12 is provided with the rear support assembly 3, the rear support assembly 3 includes a base 31 and a rear support driver 32, the base 31 is arranged at the rear side of the rear upright column 22, the base 31 extends in the up-down direction, and the rear support driver 32 is connected to the upper end of the base 31 away from the seat body assembly 1. It can be understood that the base 31 extends upward by a certain height relative to the first support seat 11 and the second support seat 12, so that the length and weight of the rear support driver 32 can be reduced, and the range of the center of gravity of the rear support driver 32 during the stretching and retracting action can be adjusted, which is more conducive to maintaining the stability of the hydraulic support. For the hydraulic support applied to the fully mechanized caving face with super large mining height, not only the cost of the rear support driver 32 can be reduced, but also the inclination angle of the rear support driver 32 can be optimized, and the flexibility of the control and the stability of the support of the coal drawing device 6 of the hydraulic support can be improved. The two groups of rear support assemblies 3 in the embodiment support the coal drawing device 6, which can prevent the coal drawing device 6 from deviating, improve the carrying capacity, improve the impact resistance of the coal drawing device 6, facilitate the coal drawing of the coal drawing device 6 with a larger window and a larger flow, and improve the coal drawing efficiency and the opening degree adjustment range of the coal drawing window. When applied to the top coal drawing transition hydraulic support, the application effect is more prominent. The posture of the coal drawing device 6 is adjusted through the rear support assembly 3, which not only can fully protect the key components of the rear scraper conveyor at the rear of the hydraulic support, but also can realize the directional caving and efficient recovery of the top coal, providing a breakthrough solution for the industry, and effectively balancing the expansion space and the protection range of the coal drawing device 6.

[0077] The front upright column 21, the rear upright column 22 and the rear support driver 32 of the embodiment can be hydraulic jacks.

[0078] The front support assembly 2 is used for supporting the top beam 5 of the hydraulic support, and the rear support assembly 3 is used for supporting the coal discharging device 6, so that the hydraulic support has sufficient unfolding space. Through the design of the rear support assembly 3, the gravity center height of the rear support driver 32 can be adjusted, and the size and weight of the rear support driver 32 are reduced. The front upright column 21, the rear upright column 22 and the rear support assembly 3 are arranged on the left and right sides of the hydraulic support in sequence along the front and rear directions, and the connecting rod part 23 is arranged in the middle of the hydraulic support. Therefore, not only the stability of the force in the front and rear directions of the hydraulic support is ensured, but also the anti-side deviation bearing capacity of the hydraulic support is improved, the overall stress is more stable, and the support stability of the rear support driver 32 to the coal discharging device 6 is better and the control is more flexible. The large-window and large-flow coal discharging of the coal discharging device 6 can be realized, and the performance is more prominent on the top coal transition hydraulic support.

[0079] Referring to Figures 3 to 5 In some embodiments, the connecting rod part 23 includes a support beam 231, a first connecting rod 232 and a second connecting rod 233. The first connecting rod 232 and the second connecting rod 233 are arranged between the support beam 231 and the bridging part 13 in the front and rear directions. The support beam 231 extends in the front and rear directions, and the height of one end of the support beam 231 adjacent to the front upright column 21 is higher than the height of the other end of the support beam 231 adjacent to the rear upright column 22, so as to form a rear passing space between the support beam 231, the first connecting rod 232 and the front upright column 21.

[0080] It can be understood that the support beam 231 is arranged obliquely from the front upper side to the rear lower side, so as to form sufficient space between the lower part of the support beam 231 and the rear of the front upright column 21. The first connecting rod 232 and the second connecting rod 233 are arranged obliquely from the front lower side to the rear upper side, so as to reduce the space occupied by the first connecting rod 232 and the second connecting rod 233 as much as possible. Therefore, the rear passing space can be formed while ensuring the compact arrangement of the front upright column 21, the support beam 231 and the first connecting rod 232.

[0081] Further, the first connecting rods 232 and the second connecting rods 233 are both multiple, the multiple first connecting rods 232 are arranged side by side in the left-right direction, the multiple second connecting rods 233 are arranged side by side in the left-right direction, and the first connecting rods 232 and the second connecting rods 233 are rotationally connected with the support beam 231 and the cross component 13. In the embodiment, the number of the first connecting rods 232 and the second connecting rods 233 is both two, the support beam 231, the first connecting rods 232 and the second connecting rods 233 are all box beams, which are formed by welding multiple plates, so that the structural stability is ensured and the weight is reduced, and the box beams have better anti-lateral displacement ability.

[0082] In the embodiment, two first connecting rods 232 and two second connecting rods 233 are arranged, so that a double four-bar linkage mechanism arranged side by side is formed between the support beam 231 and the cross component 13, and the anti-lateral displacement ability and the support ability are better. In the embodiment, two substantially symmetrical side bracing structures are formed between the front upright column 21 and the rear upright column 22 and the top beam 5, and two substantially symmetrical middle bracing structures are formed between the first connecting rods 232, the second connecting rods 233 and the support beam 231, so that the four bracing structures can be used to support the hydraulic support in the front-rear direction and the left-right direction, so that the stability of the hydraulic support in the operation of the super-large mining height fully-mechanized working face is ensured.

[0083] Referring to Figures 3 to 5In some embodiments, the first support base 11 and the second support base 12 each include a base bottom plate 111, a base outer plate 112, a base inner plate 113, a base middle support plate 114, a front column socket seat 115, a rear column socket seat 116, and a base cover plate 117. The base outer plate 112 and the base inner plate 113 are arranged in parallel and spaced apart in the left-right direction, and are connected to the base bottom plate 111 to form a base inner cavity. The base middle support plate 114 is arranged in the base inner cavity, and is spaced apart from the base bottom plate 111 in the up-down direction to divide the base inner cavity into an upper chamber and a lower chamber, and a plurality of lower rib plates 1181 are arranged in the lower chamber. The front column socket seat 115 and the rear column socket seat 116 are arranged in the base middle support plate 114 in the front-rear direction, and each has a semispherical sink 1151. The front column socket seat 115 is connected to the front upright column 21, and the rear column socket seat 116 is connected to the rear upright column 22. The front column socket seat 115 and the rear column socket seat 116 provide basic support for the front upright column 21 and the rear upright column 22, respectively. The load applied to the top beam 5 by the top plate can be transmitted to the front column socket seat 115 and the rear column socket seat 116 through the front upright column 21 and the rear upright column 22, and then dispersed and transmitted to the base bottom plate 111 by the base middle support plate 114 and the lower rib plates 1181. The base bottom plate 111 is in abutment with the ground, and the ground applies a counteracting force to the base bottom plate 111 to achieve force balance. The lower chamber and the lower rib plates 1181 arranged in the lower chamber in the present embodiment can achieve force dispersion and transmission, avoiding the direct arrangement of the front column socket seat 115 or the rear column socket seat 116 on the base bottom plate 111, which would cause local overloading of the base bottom plate 111 and deformation or breakage.

[0084] The lower rib plates 1181 can include vertical longitudinal rib plates and transverse rib plates, which are perpendicular to the base middle support plate 114. The longitudinal rib plates extend in the front-rear direction, and the transverse rib plates extend in the left-right direction. The longitudinal rib plates and the transverse rib plates are arranged in a cross shape. For example, there is one or more longitudinal rib plates, which are parallel to the base inner plate 113 and the base outer plate 112. There are a plurality of transverse rib plates, which are parallel and spaced apart in the front-rear direction. Thus, the connected longitudinal rib plates and transverse rib plates can divide the lower chamber into a plurality of small chambers, and the load borne by the base middle support plate 114 can be dispersed and transmitted to the base bottom plate 111 through the longitudinal rib plates and the transverse rib plates, so that the force borne by the base bottom plate 111 is uniform and has better consistency.

[0085] The seat cover plate 117 is arranged on the side of the seat middle support plate 114 away from the seat bottom plate 111, the seat cover plate 117 is located between the front column socket seat 115 and the rear column socket seat 116, and a plurality of upper rib plates 1182 are arranged in the upper chamber between the seat cover plate 117 and the seat middle support plate 114. The rear of the front upright column 21 is provided with a rear stepping plate 14, the rear stepping plate 14 is arranged on the seat cover plate 117 of the first support seat 11 and the second support seat 12, and the rear stepping plate 14 is located below the rear passing space. The height of the seat cover plate 117 is higher than that of the seat middle support plate 114, so that the height of the rear stepping plate 14 can be raised. Since the upper end of the front upright column 21 is inclined forward, and the upper end of the first connecting rod 232 is inclined backward, the space between the two gradually increases from top to bottom, therefore, by reasonably controlling the height of the seat cover plate 117, the space on the rear stepping plate 14 can be ensured to be sufficient, and the space is not too narrow when the passing personnel passes through the position between the front upright column 21 and the first connecting rod 232. At the same time, in order to make the front upright column 21 and the first connecting rod 232 more compact in the front-rear direction, even if the interval distance of the front upright column 21 and the first connecting rod 232 in the front-rear direction is small, the height of the seat cover plate 117 can be appropriately raised to meet the passing space requirement of the worker.

[0086] The front of the front upright column 21 is provided with a front stepping plate 15, the front stepping plate 15 is arranged on the first support seat 11 and the second support seat 12, and the front stepping plate 15 is located on the side of the front column socket seat 115 away from the rear column socket seat 116, and the front stepping plate 15 is located below the front passing space.

[0087] The front of the front upright column 21 is provided with a front stepping plate 15, the front stepping plate 15 is arranged on the first support seat 11 and the second support seat 12, and the front stepping plate 15 is located on the side of the front column socket seat 115 away from the rear column socket seat 116, and the front stepping plate 15 is located below the front passing space.

[0088] Referring to Figures 3 to 5In some embodiments, the bridging component 13 comprises a first connecting plate 131, a side support plate 132, a middle support plate 133 and a second connecting plate 134. The first connecting plate 131 is arranged across the first support base 11 and the second support base 12 and connected with the inner seat plate 113 and the outer seat plate 112 in the first support base 11 and the second support base 12, and the first connecting plate 131 is arranged adjacent to the front upright column 21. The front part of the first support base 11 and the second support base 12 in the embodiment are connected by the first connecting plate 131, and accordingly, the front pedal 15 can be located at the front side of the first connecting plate 131, and the rear pedal 14 can be located at the rear side of the first connecting plate 131, without interference between each other. The side support plate 132 is connected above the rear side of the inner seat plate 113 of the first support base 11 and the second support base 12, and the middle support plate 133 is arranged between the two side support plates 132. The side support plate 132 and the middle support plate 133 are arranged side by side and spaced apart in the left-right direction, and a plurality of connecting holes are arranged between the side support plate 132 and the middle support plate 133, and the connecting holes are connected with the connecting rod component 23.

[0089] The second connecting plate 134 is arranged between the side support plate 132 and the middle support plate 133 and / or the second connecting plate 134 is arranged between the two side support plates 132. It can be understood that the second connecting plate 134 is a plurality of plates, part of the second connecting plate 134 is used to connect the adjacent two side support plates 132, and part of the second connecting plate 134 can be connected between the side support plate 132 and the middle support plate 133.

[0090] The second connecting plate 134 in the embodiment is arranged at the middle and lower part of the side support plate 132 and the middle support plate 133, and the second connecting plate 134 can be a broken line plate, so as to leave an assembly space for connecting the first connecting rod 232 and the second connecting rod 233 at the middle and upper part of the side support plate 132 and the middle support plate 133, avoiding the interference between the first connecting rod 232 and the second connecting rod 233 and the bridging component 13.

[0091] Further, the inner side plate part 1131 is located above the rear part of the inner seat plate 113 of the first support base 11 and the inner seat plate 113 of the second support base 12, and the inner side plate part 1131 is fixedly attached with the side support plate 132. The inner side plate part 1131 is a part of the inner seat plate 113, and the inner side plate part 1131 is fixedly attached with the side support plate 132, which can ensure that the side support plate 132 and the inner seat plate 113 are parallel, improve the stability of the side support plate 132, increase the connecting area between the side support plate 132 and the inner seat plate 113, and improve the anti-side deviation ability of the side support plate 132 and the connecting rod component 23.

[0092] In this embodiment, both the side support plates 132 and the middle support plate 133 of the jumper component 13 protrude from the seat body assembly 1, thereby increasing the connection height of the lower ends of the first link 232 and the second link 233, making it more convenient to optimize the spatial position of the link component 23 in the hydraulic support of the ultra-high mining height working face and improving the stability of the hydraulic support. At this time, the inner baffle portion 1131 and the front column socket 115 are spaced apart in the front-rear direction, and the spacing distance can be designed according to the actual requirements of the hydraulic support. The seat cover plate 117 and the inner baffle portion 1131 overlap at least partially in the left-right direction. This can make the structure between the link component 23 and the front upright 21 connected to the jumper assembly compact, while ensuring a certain gap between the inner baffle portion 1131 and the front column socket 115. Even if the spacing distance between the inner baffle portion 1131 and the front column socket 115 in the front-rear direction is small, the minimum width of the rear passage space can be optimized by controlling the height of the seat cover plate 117.

[0093] In this embodiment, the rear pedal 14 is generally in a "U" shape. The middle part of the rear pedal 14 is located between the two front uprights 21 and in the area in front of the link component 23, and both sides of the rear pedal 14 are located behind the front uprights 21 and in the areas on the left and right sides of the link component 23.

[0094] As Figure 3 and Figure 4 shown, in some embodiments, the base 31 of the rear support assembly 3 includes a plurality of main rib plates 311 and a plurality of third connecting plates 312. The plurality of main rib plates 311 are arranged side by side and spaced apart in the left-right direction, and the main rib plates 311 are located between the inner seat plate 113 and the outer seat plate 112 in the corresponding first support seat 11 or second support seat 12. Some of the plurality of third connecting plates 312 are provided between two adjacent main rib plates 311, and another part of the plurality of third connecting plates 312 are provided between the inner seat plate 113 and the adjacent main rib plate 311, and between the outer seat plate 112 and the adjacent main rib plate 311.

[0095] The outer seat plates 112 of the first support seat 11 and the outer seat plates 112 of the second support seat 12 both have outer baffle portions 1121. The outer baffle portions 1121 are located above the rear part of the outer seat plates 112, and the upper ends of the outer baffle portions 1121 are adjacent to the upper ends of the main rib plates 311.

[0096] It can be understood that the outer baffle portion 1121 is a part of the outer seat plate 112, and the outer baffle portion 1121 and the main rib plate 311 are also connected by the third connecting plate 312. This can ensure that the main rib plate 311 and the outer seat plate 112 are parallel, increase the connection area between the main rib plate 311 and the outer seat plate 112 and the stability of the main rib plate 311, improve the anti-side deviation ability of the base 31, and provide a stable support foundation for the rear support actuator 32.

[0097] The third connecting plate 312 of the embodiment is generally annular, for example, the third connecting plate 312 arranged between two adjacent main rib plates 311 can be arranged along the circumference of the main rib plate 311, and the third connecting plate 312 arranged between the seat outer plate 112 and the main rib plate 311 can be arranged along the circumference of the left-right direction overlapping section of the seat outer plate 112 and the main rib plate 311, thereby improving the structural stability between adjacent components.

[0098] The seat body assembly 1 in the embodiment is sequentially arranged from front to back with a front step 15, a front upright column 21, a rear step 14, a rear upright column 22, and a base 31, has high space utilization, and the relative positions between components are more reasonable and compact, thereby having more stable support performance and safety protection performance on the transition hydraulic support of the super-large mining height.

[0099] As shown in Figures 5 to 8 In some embodiments, the hydraulic support bottom support device for the super-large mining height fully-mechanized caving mining face further includes a pushing assembly 4 connected between the first support seat 11 and the second support seat 12, and the pushing assembly 4 includes a frame body 41, a push-pull driver 42, and a bottom lifting driver 43.

[0100] The frame body 41 has a connecting head 418 at the front end of the frame body 41, and the connecting head 418 is used to be connected with a front scraper conveyor in front of the hydraulic support.

[0101] The first end of the push-pull driver 42 is connected with the front end of the seat body assembly 1, the second end of the push-pull driver 42 is connected with the rear end of the frame body 41, and the push-pull driver 42 is used to drive the relative movement of the frame body 41 and the seat body assembly 1 in the front-rear direction. When the push-pull driver 42 is extended, the frame body 41 can be retracted into the space between the first support seat 11 and the second support seat 12, and when the push-pull driver 42 is retracted, the frame body 41 can be extended from the front end of the seat body assembly 1.

[0102] The first end of the bottom lifting driver 43 is connected with the front end of the seat body assembly 1, the second end of the bottom lifting driver 43 is abutted with the upper end face of the frame body 41, and the second end of the bottom lifting driver 43 is movable relative to the frame body 41 in the front-rear direction, and the seat body assembly 1 and the bottom lifting driver 43 have a limiting component to enable the bottom lifting driver 43 to extend and retract in the up-down direction. When the bottom lifting driver 43 is extended, the bottom lifting driver 43 can lift the front end of the seat body assembly 1 upward, thereby enabling the front end of the seat body assembly 1 to be raised, facilitating the forward pulling of the seat body assembly 1, and avoiding the front end of the seat body assembly 1 from sinking into the ground. The second end (lower end) of the bottom lifting driver 43 can slide forward and backward on the frame body 41, thereby not affecting the movement of the frame body 41, and the limiting component can limit the inclination of the bottom lifting driver 43, so that the bottom lifting driver 43 always remains parallel to the up-down direction.

[0103] The push-pull driver 42 and the lifting driver 43 in the embodiment can be hydraulic jacks.

[0104] Further, the limiting component comprises a sliding groove 119 arranged on the seat body assembly 1 and a sliding block 431 arranged on the lifting driver 43, the sliding block 431 is clamped in the sliding groove 119. In the embodiment, two guide plates are arranged on the inner seat plate 113 of the first support seat 11 and the second support seat 12, and the sliding groove 119 extending in the up-down direction is formed between the two guide plates. The sliding block 431 can be arranged on the shell of the lifting driver 43. The upper end of the lifting driver 43 is hinged to the seat body assembly 1. The first connecting plate 131 in the embodiment is arranged on the front part of the seat body assembly 1, and the top seat 432 is connected to the first connecting plate 131 through a hinge shaft. The upper end of the lifting driver 43 is connected to the top seat 432. Thus, the stability of the lifting driver 43 when moving relative to the frame body 41 can be improved by restraining the upper end and the middle part of the lifting driver 43.

[0105] As shown in Figure 7 and Figure 8 Further, the frame body 41 in the embodiment comprises a frame bottom plate 411, two frame side plates 412 and a frame cover plate 413. The two frame side plates 412 are connected in parallel and at intervals along the left-right direction on the frame bottom plate 411. The rear end of each of the two frame side plates 412 is provided with a rear pad plate 414 to form a rear hinge lug seat for connecting with the rear end of the push-pull driver 42. The front end of the push-pull driver 42 can be connected to the first connecting plate 131 or the inner seat plate 113. The frame cover plate 413 is connected between the two frame side plates 412. The frame cover plate 413 comprises a first section 4131, a second section 4132 and a third section 4133 connected in sequence from front to rear. The first section 4131 and the third section 4133 are parallel to the horizontal plane, and the first section 4131 is higher than the third section 4133. The second section 4132 is an inclined section and is connected between the first section 4131 and the second section 4132. The second section 4132 and the third section 4133 can reserve space for the arrangement of the push-pull driver 42, avoiding interference between the push-pull driver 42 and the frame body 41 during the operation of the push-pull driver 42. At the same time, the inclination angle of the push-pull driver 42 can be better adjusted, so that the included angle between the axis of the push-pull driver 42 and the horizontal plane is smaller, and the size of the component force of the push-pull driver 42 in the front-rear direction and the up-down direction during the operation of the push-pull driver 42 is optimized, which is more practical.

[0106] The frame base plate 411, frame side plates 412, and frame cover plate 413 form the frame cavity. An internal stiffening plate 415 is provided within the cavity. The internal stiffening plate 415 improves the stability of the frame body 41, providing a stable support foundation for the lifting actuator 43 and ensuring that the frame body 41 does not deform when the top support assembly 1 is in place. Both the frame base plate 411 and the frame cover plate 413 have front pads 416 at their front ends. A connector 418 connects to the front pads 416. A clamp 417 is provided on the outer side of the front ends of the frame base plate 411 and the frame cover plate 413. The clamp 417 may include an upper bent plate and a lower bent plate, which are generally U-shaped. The clamp 417 reinforces the structure of the frame body 41, improving structural stability. In this embodiment, the axis of the connecting shaft between the connector 418 and the front pad 416 is parallel to the vertical direction, and the axis of the connecting hole at the front end of the connector 418 is parallel to the horizontal direction, thus forming a crosshead. When connected to the front scraper conveyor, the connector 418 is highly flexible, has strong self-adaptability, and is easy to adjust, which can avoid problems such as stress concentration or difficulty in docking.

[0107] like Figures 9-11 As shown, during coal mining operations, a front scraper conveyor is installed in front of the hydraulic support. When it is necessary to push the front scraper conveyor forward, the push-pull driver 42 retracts, and the frame body 41 extends from the front end of the base assembly 1, pushing the front scraper conveyor forward. The extension distance of the frame body 41 in a single operation can be as shown in the figure. .

[0108] When the hydraulic support needs to be moved forward, the front column 21 and rear column 22 retract, causing the top beam 5 of the hydraulic support to drop appropriately. The bottom-lifting actuator 43 extends, lifting the front end of the base assembly 1 upward, causing the front end of the base assembly 1 to tilt upward at a certain angle. To prevent the front end of the base assembly 1 from sinking into the ground and preventing the transition hydraulic support from moving forward, the push-pull actuator 42 is then driven to extend. As the push-pull actuator 42 extends, the frame 41 gradually retracts below the base assembly 1, pulling the hydraulic support forward. Finally, the bottom-lifting actuator 43 retracts, and the front column 21 and rear column 22 rise, raising the top beam 5 to the support height.

[0109] The vertical movement range of the top beam 5 of the hydraulic support is shown in the figure. to During the lifting and lowering of the top beam 5, the rear support driver 32 can also drive the coal discharge device 6 to adjust its posture synchronously, ensuring the stability of the posture of the top beam 5 and the coal discharge device 6.

[0110] 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.

[0111] 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.

[0112] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, 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.

[0113] 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.

[0114] 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.

[0115] Although the embodiments of the present disclosure have been shown and described above, it is understood that the above-described embodiments are exemplary, and are not to be interpreted as limiting the present disclosure, and the ordinary skilled person in the art can make changes, modifications, replacements, and variations to the above-described embodiments within the scope of the present disclosure.

Claims

1. A hydraulic support bottom support device for an ultra-high-seam-height fully-mechanized caving face, characterized in that, The utility model relates to a hydraulic support bottom support device for super large mining height fully mechanized caving face, which comprises a seat body assembly, a front support assembly and a rear support assembly. The seat body assembly comprises a first support seat, a second support seat and a cross connecting component, the first support seat and the second support seat are arranged side by side and spaced apart in the left-right direction, and the cross connecting component is connected between the first support seat and the second support seat. The front support assembly comprises a front upright column, a rear upright column and a connecting rod component, the first support seat and the second support seat are each provided with the front upright column and the rear upright column, the front upright column and the rear upright column arranged on the same support seat are spaced apart in the front-rear direction, the connecting rod component is connected with the cross connecting component, the connecting rod component and the front upright column have a rear passing space therebetween, and the front upright column has a front passing space on the front side thereof. The rear support assembly is arranged at the rear of the first support seat and the second support seat, and comprises a base and a rear support driver, the base is arranged on the rear side of the rear upright column, the base extends in the up-down direction, and the rear support driver is connected to the upper end of the base away from the seat body assembly. The first support seat and the second support seat each comprise: a seat bottom plate; a seat outer plate and a seat inner plate, which are arranged in parallel and spaced apart in the left-right direction, and are connected to the seat bottom plate to form a seat inner cavity; a seat middle support plate, which is arranged in the seat inner cavity, is spaced apart from the seat bottom plate in the up-down direction to divide the seat inner cavity into an upper chamber and a lower chamber, and is provided with a plurality of lower rib plates in the lower chamber; a front column socket seat and a rear column socket seat, which are arranged spaced apart in the front-rear direction on the seat middle support plate, are each provided with a hemispherical sink, the front upright column is connected to the front column socket seat, and the rear upright column is connected to the rear column socket seat; the hydraulic support bottom support device further comprises a seat cover plate, a rear stepping plate and a front stepping plate, the seat cover plate is arranged on the side of the seat middle support plate away from the seat bottom plate, is located between the front column socket seat and the rear column socket seat, a plurality of upper rib plates are arranged in the upper chamber between the seat cover plate and the seat middle support plate, and the rear stepping plate is arranged on the seat cover plate of the first support seat and the second support seat, and is located below the rear passing space; the front stepping plate is arranged on the first support seat and the second support seat, is located on the side of the front column socket seat away from the rear column socket seat, and is located below the front passing space; the cross connecting component comprises: a first connecting plate, which is arranged between the first support seat and the second support seat, is connected with the seat inner plate and the seat outer plate in the first support seat and the second support seat, and is arranged adjacent to the front upright column. A side support plate and a middle support plate are connected above the back side of the inner plate of the first support seat and the second support seat, the middle support plate is arranged between the two side support plates, the side support plate and the middle support plate are arranged side by side and spaced apart in the left-right direction, a plurality of groups of connecting holes are arranged between the side support plate and the middle support plate, and the connecting rod component is connected with the connecting hole; A second connecting plate is arranged between the side support plate and the middle support plate, and / or the second connecting plate is arranged between the two side support plates; The inner plate of the first support seat and the inner plate of the second support seat each have an inner side baffle part, the inner side baffle part is located above the back part of the inner plate, and the inner side baffle part is fixedly attached to the side support plate; The inner side baffle part and the front column socket seat are arranged in the front-rear direction, and the seat cover plate and the inner side baffle part are at least partially overlapped in the left-right direction; The base comprises: A plurality of main rib plates are arranged side by side and spaced apart in the left-right direction, and the main rib plate is located between the inner plate and the outer plate in the corresponding first support seat or second support seat; A plurality of third connecting plates are arranged between adjacent two main rib plates, and another part of the plurality of third connecting plates is arranged between the inner plate and the adjacent main rib plate and between the outer plate and the adjacent main rib plate; The outer plate of the first support seat and the outer plate of the second support seat each have an outer side baffle part, the outer side baffle part is located above the back part of the outer plate, and the upper end of the outer side baffle part is adjacent to the upper end of the main rib plate.

2. The hydraulic support bottom support device for the fully-mechanized top coal caving face with an ultra-large mining height according to claim 1, characterized in that, The connecting rod component comprises a support beam, a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are arranged in the front-rear direction and spaced apart between the support beam and the bridging component; The support beam extends in the front-rear direction, and the height of one end of the support beam adjacent to the front column is higher than the height of one end of the support beam adjacent to the rear column, so as to form the rear passing space between the support beam, the first connecting rod and the front column.

3. The hydraulic support bottom support device for the fully-mechanized caving face with an ultra-large mining height according to claim 2, characterized in that, The first connecting rod and the second connecting rod are a plurality of, a plurality of first connecting rods are arranged side by side in the left-right direction, a plurality of second connecting rods are arranged side by side in the left-right direction, and the first connecting rod and the second connecting rod are rotationally connected with the support beam and the bridging component. And / or, the support beam, the first connecting rod and the second connecting rod are box beams.

4. The hydraulic support bottom support device for the fully-mechanized top coal caving face with an ultra-large mining height according to claim 1, characterized in that, Further comprising a pushing and moving assembly connected between the first support seat and the second support seat, the pushing and moving assembly comprises: A frame body, the frame body has a connecting head located at the front end of the frame body; A push-pull driver, the first end of the push-pull driver is connected with the front end of the seat body assembly, the second end of the push-pull driver is connected with the rear end of the frame body, and the push-pull driver is used to drive the relative movement of the frame body and the seat body assembly in the front-rear direction. The lifting base driver is connected with the front end of the seat body assembly, and the second end of the lifting base driver is abutted with the upper end surface of the frame body and is movable in the front-rear direction relative to the frame body. The seat body assembly and the lifting base driver are provided with a limiting component to enable the lifting base driver to stretch and contract in the up-down direction.

5. The hydraulic support bottom support device for the fully-mechanized caving face with an ultra-large mining height according to claim 4, characterized in that, The limiting component comprises a sliding groove and a sliding block. The sliding groove is arranged on the seat body assembly, and the sliding block is arranged on the lifting base driver. The sliding block is clamped in the sliding groove. Furthermore, the frame body comprises a frame bottom plate, frame side plates and a frame cover plate. The two frame side plates are connected in parallel and at intervals on the frame bottom plate in the left-right direction. The rear ends of the two frame side plates are provided with rear backing plates to form rear hinged lug seats. The frame cover plate is connected between the two frame side plates. The frame cover plate comprises a first section, a second section and a third section which are connected in sequence from front to rear. The first section and the third section are parallel to the horizontal plane, and the first section is higher than the third section. The second section is an inclined section and is connected between the first section and the second section. The frame bottom plate, the frame side plates and the frame cover plate form a frame inner cavity. An inner frame rib plate is arranged in the frame inner cavity. The front ends of the frame bottom plate and the frame cover plate are provided with front backing plates. The connecting head is connected with the front backing plates. The front ends of the frame bottom plate and the frame cover plate are provided with a hoop on the outer side.

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