Supporting device for supporting working face

Abstract

The invention provides a supporting device for working face supporting, and relates to the technical field of supporting equipment, the end face of a top beam in the working face stoping direction is the front end, the end face in the opposite direction is the tail end, and the front end of the top beam is provided with a telescopic beam containing cavity; the telescopic beam is connected to the telescopic beam containing cavity in a sliding mode, the sliding direction of the telescopic beam is parallel to the connecting line of the front end and the tail end of the top beam, the telescopic beam containing cavity is provided with a telescopic beam outlet for the telescopic beam to slide out, and gangue blocking plate containing areas are arranged at the two ends, in the supporting direction of the side end of the working face of the top beam, of the telescopic beam; the waste rock blocking plate is connected to the waste rock blocking plate containing area in a sliding mode, the sliding direction of the waste rock blocking plate is in the supporting direction of the side end of the working face, the waste rock blocking plate containing area is provided with a waste rock blocking plate outlet for the waste rock blocking plate to slide out, the supporting area of a top plate can be effectively increased, the roof leakage area is reduced, lateral sealing is achieved, and the supporting device can be rapidly folded.

Description

Technical Field

[0001] The present invention relates to the technical field of support equipment, and in particular to a support device for supporting a working surface. Background Art

[0002] According to the coal mining method, the hydraulic supports of the working face are classified. The two most commonly used types are the full-height supports for one-time mining and the top coal caving supports. For the support systems of the above two supports, refer to the attached Figure 1 , Figure 1 The direction of the middle arrow refers to the direction of the working face mining. After the multiple front support structures are extended, the newly exposed roof is timely covered by the front support structures after the coal mining machine cuts. However, there is still a certain rectangular cavity 01 between the adjacent front support structures. Figure 1 As shown by the cross-section line, the support operation cannot be effectively carried out in the rectangular cavity 01, and safety accidents are prone to occur. For example, when the center distance between two adjacent brackets is 1500mm, the width of the support structure is about 1300mm-1350mm. After the support structures of the two adjacent brackets are extended, at least a rectangular area with a width of 150mm-200mm and a length of 800mm cannot be closed.

[0003] For the full-height working face support in one-time mining, the front support structure (telescopic beam) needs to support the newly exposed rock stratum roof after the coal mining machine cuts. In the case of broken roof, the rectangular cavity 01 mentioned above is prone to leakage, causing safety accidents.

[0004] For the top coal caving working face support, the front support structure (telescopic beam) needs to support the newly exposed coal seam roof after the coal mining machine cuts. Under the condition of low coal seam hardness, top coal caving and mining technology is a coal mining method with relatively high economic benefits, especially for some "three soft" coal producing areas in my country with extremely low coal seam hardness. Coal and gangue leakage is prone to occur at the rectangular cavity 01 mentioned above, causing safety accidents.

[0005] Therefore, it is urgent to propose a support device for working face support, which can effectively reduce the phenomenon of loose sealing between adjacent front-end support structures, increase the support area of ​​the top plate, reduce the leaking roof area, and when the telescopic beam is retracted, the support device can also be quickly retracted without affecting the normal operation of the telescopic beam. Summary of the invention

[0006] The purpose of the present invention is to provide a support device for working face support to solve the problems existing in the above-mentioned prior art, which can effectively increase the support area of ​​the top plate, reduce the roof leakage area, realize lateral closure, and the support device can also be quickly retracted.

[0007] To achieve the above-mentioned purpose, the present invention provides the following scheme: A support device for working face support is provided, comprising: a top beam, wherein the two ends of the top beam along the working face mining direction are respectively a front end and a tail end, and a telescopic beam accommodating cavity is provided at the front end of the top beam; a telescopic beam, wherein the telescopic beam is slidably connected to the telescopic beam accommodating cavity, and the sliding direction of the telescopic beam is parallel to the line connecting the front end and the tail end of the top beam, and the telescopic beam accommodating cavity has a telescopic beam outlet for the telescopic beam to slide out, and both ends of the telescopic beam along the working face side end supporting direction are provided with a rock baffle accommodating area; a rock baffle, wherein the rock baffle is slidably connected to the rock baffle accommodating area, and the sliding direction of the rock baffle is along the working face side end supporting direction, and the rock baffle accommodating area has a rock baffle outlet for the rock baffle to slide out.

[0008] Preferably, a slide groove is provided on the telescopic beam, a slider slidably cooperated with the slide groove is provided on the rock baffle plate, a spring guide column is provided on the rock baffle plate, the axis of the spring guide column is parallel to the sliding track of the rock baffle plate, a spring guide groove is provided on the telescopic beam, a return spring is provided in the spring guide groove, the return spring is sleeved on the spring guide column, one end of the return spring abuts against the rock baffle plate, and the other end of the return spring abuts against the telescopic beam.

[0009] Preferably, a guide rod through groove is provided on the rock baffle plate, and the guide rod through groove extends along the sliding direction of the telescopic beam; a guide rod is provided in the telescopic beam accommodating cavity, the rear end of the guide rod is fixedly connected to the telescopic beam accommodating cavity, and the front end of the guide rod is provided with a guide inclined surface for guiding the guide rod to penetrate into the guide rod through groove.

[0010] Preferably, the telescopic beam accommodating cavity comprises a first cavity and a second cavity arranged in parallel, and a slot is provided between the first cavity and the second cavity; the telescopic beam is provided with rock baffle plate accommodating areas corresponding to the first cavity respectively, and an insertion rod is provided between adjacent rock baffle plate accommodating areas, and the insertion rod is plugged into and matched with the slot.

[0011] Preferably, the rock baffle plate includes a first rock baffle plate and a second rock baffle plate arranged side by side, the first rock baffle plate is provided with a limiting groove, the axis of the limiting groove is parallel to the sliding direction of the first rock baffle plate; the telescopic beam is provided with a limiting hole corresponding to the sliding trajectory of the limiting groove, and the limiting hole is detachably provided with a pin shaft for fixed connection with the limiting groove; the second rock baffle plate is provided with a blocking block for limiting and abutting with the first rock baffle plate.

[0012] Preferably, the limiting hole comprises a first limiting hole and a second limiting hole, the first limiting hole corresponds to an initial end of the sliding track of the first rock baffle plate, and the second limiting hole corresponds to an end end of the sliding track of the first rock baffle plate.

[0013] Preferably, the rear end of the telescopic beam is provided with a rod passing groove for plugging and cooperating with the guide rod, and a first rod passing hole for the guide rod to pass through is provided between the rod passing groove and the gangue baffle accommodating area, and the size of the first rod passing hole matches the size of the guide rod.

[0014] Preferably, a second rod passing hole is provided at the front end of the rock baffle plate accommodating area, the second rod passing hole is arranged opposite to the first rod passing hole and is axially aligned, and the size of the second rod passing hole matches the size of the guide rod.

[0015] Preferably, a jack is provided on the top beam, the top beam is fixedly connected to a base of the jack, and a movable end of the jack is connected to the telescopic beam.

[0016] Preferably, a telescopic beam ear plate is provided at the front end of the telescopic beam, and the movable end of the jack is connected to the telescopic beam ear plate.

[0017] Compared with the prior art, the present invention has achieved the following technical effects:

[0018] The top beam of the support is controlled to support the top plate of the working face, so that the front end of the top beam is consistent with the mining direction of the working face, and the telescopic beam is controlled to extend forward through the telescopic beam outlet, and the telescopic beam protrudes from the top beam. The telescopic beam can support the top plate of the working face, and the gangue baffle in the telescopic beam passes through the gangue baffle outlet and slides out toward the side end support direction of the working face. The gangue baffle can increase the support area in the side end support direction (lateral) of the working face. In this way, since the coal mining working face is supported by multiple supports arranged side by side, the gangue baffles of adjacent supports can abut against each other, realizing the closure between adjacent telescopic beams, realizing lateral closure, avoiding a large degree of roof leakage between adjacent telescopic beams, increasing the support area for the top plate, reducing the roof leakage area, significantly reducing safety hazards, and accelerating the advancement of coal mining. When shrinking, the telescopic beam is controlled to shrink into the top beam, so that the telescopic beam and the gangue baffle can be retracted synchronously. When the telescopic beam retracts to the telescopic beam accommodating cavity in the top beam, the rock baffle plate can also retract to the rock baffle plate accommodating area of ​​the telescopic beam and simultaneously reach a stable retracted state. The device is simple and reliable and has good operating stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the prior art;

[0021] Figure 2 It is a schematic diagram of the support device of the present invention;

[0022] Figure 3 for Figure 2 A partial enlarged view of

[0023] Figure 4 A schematic diagram showing another perspective of the support device being deployed;

[0024] Figure 5 It is a schematic diagram of the supporting device of the present invention in a folded state;

[0025] Figure 6 It is a schematic diagram of another viewing angle when the support device is in a folded state;

[0026] Figure 7 It is a schematic diagram of the overall structure of the telescopic beam;

[0027] Figure 8 This is a schematic diagram of the telescopic beam from another perspective;

[0028] Fig. 9 This is a schematic diagram of the assembly of the top beam and the guide rod;

[0029] Fig.10 It is a schematic diagram of the overall structure of the guide rod;

[0030] Fig.11 Schematic diagram of the overall structure of the first gangue baffle;

[0031] Fig.12 It is a schematic diagram of the overall structure of the second rock baffle.

[0032] Among them, 1. top beam; 2. telescopic beam; 3. gangue baffle; 4. telescopic beam accommodating cavity; 5. telescopic beam outlet; 6. gangue baffle accommodating area; 7. gangue baffle outlet; 8. slide groove; 9. slide block; 10. spring guide column; 11. spring guide groove; 12. reset spring; 13. guide rod through groove; 14. guide rod; 15. first positioning hole; 16. second positioning hole; 17. guide slope; 18. first cavity Body; 19, second cavity; 20, slot; 21, plug rod; 22, first gangue baffle plate; 23, second gangue baffle plate; 24, limit groove; 25, first limit hole; 26, second limit hole; 27, block; 28, rod slot; 29, first rod hole; 30, second rod hole; 31, jack; 32, telescopic beam ear plate; 33, top beam ear plate; 35, pin shaft; 36, inclined surface abutment end. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Please refer to Figures 1 to 12 As shown, in this embodiment, a support device for working face support is provided, including a top beam 1, a telescopic beam 2 and a gangue baffle 3. The top beam 1 is arranged along the working face mining direction, and the two ends of the top beam 1 along the working face mining direction are the front end and the tail end respectively. Specifically, the end face of the top beam 1 along the working face mining direction is the front end, and the opposite direction is the tail end. The line connecting the front end and the rear end of the top beam 1 is the length direction of the top beam, and the side end support direction of the working face is preferably perpendicular to the mining direction of the working face. A telescopic beam accommodating chamber 4 is provided at the front end of the top beam 1, and the telescopic beam 2 is slidably connected in the telescopic beam accommodating chamber 4, and the sliding direction of the telescopic beam 2 is parallel to the line connecting the front end and the rear end of the top beam 1, that is, the telescopic beam 2 slides along the axis of the top beam 1, and a telescopic beam outlet 5 is provided at the front end of the telescopic beam accommodating chamber 4, and the telescopic beam 2 in the telescopic beam accommodating chamber 4 can slide forward through the telescopic beam outlet 5. A rock baffle accommodating area 6 is also provided on the telescopic beam 2, and the rock baffle accommodating area 6 is arranged along the side end support direction of the working face (laterally). Specifically, two rock baffle accommodating areas 6 are provided, extending from the inside of the telescopic beam 2 and along the side end support direction of the working face toward both sides. Assuming that the mining direction of the working face is defined as the length direction of the working face, then the side end support direction of the working face is the width direction of the working face. Preferably, the two rock baffle plate accommodating areas 6 are symmetrical about the center line of the telescopic beam 2, and the rock baffle plate 3 is slidably connected to the telescopic beam 2. Specifically, the rock baffle plate 3 is slidably connected to the rock baffle plate accommodating area 6, and the sliding direction of the rock baffle plate 3 is along the side end support direction of the working face. A rock baffle plate outlet 7 is provided in the rock baffle plate accommodating area 6, and the rock baffle plate 3 in the rock baffle plate accommodating area 6 can pass through the rock baffle plate outlet 7 to slide out to both sides of the working face.

[0036] Working principle: when in the contracted state, the rock baffle plate 3 is accommodated in the rock baffle plate accommodating area 6 on the telescopic beam 2, and the telescopic beam 2 is accommodated in the telescopic beam accommodating cavity 4 in the top beam 1. When working, the top beam of the support is controlled to support the top plate of the working face, so that the front end of the top beam 1 is consistent with the mining direction of the working face, the top beam 1 is controlled to move into place, and the top beam 1 is arranged along the mining direction of the working face. The telescopic beam 2 is controlled to extend forward through the telescopic beam outlet 5, so that the telescopic beam 2 protrudes from the top beam 1, and the telescopic beam 2 can support the top plate of the working face. At the same time, the rock baffle plate 3 in the telescopic beam 2 passes through the rock baffle plate outlet 7 and supports the top plate of the working face along the side end of the working face. The gangue baffle 3 can slide out in the protection direction, and the support area in the side support direction (lateral direction) of the working face can be increased by the gangue baffle 3. Preferably, in the side support direction of the working face, the gangue baffle 3 can protrude from the side wall of the top beam 1, that is, the sliding track of the gangue baffle 3 protrudes from the side wall of the top beam 1. In this way, when multiple support devices for working face support are arranged side by side, adjacent gangue baffles 3 can abut against each other or be sufficiently close to each other, effectively realizing the closure between adjacent telescopic beams 2, avoiding a large degree of roof leakage between adjacent telescopic beams 2, increasing the support area of ​​the top plate, reducing the roof leakage area, significantly reducing safety hazards, and accelerating the advancement of coal mining. When shrinking, the telescopic beam 2 is controlled to shrink into the top beam 1, and at this time, the telescopic beam 2 and the gangue baffle 3 can be retracted synchronously. When the telescopic beam 2 retracts to the telescopic beam accommodating cavity 4 in the top beam 1, the rock baffle plate 3 can also retract to the rock baffle plate accommodating area 6 of the telescopic beam 2, and at the same time reach a stable retracted state. The device is simple and reliable, and has good operating stability.

[0037] In one embodiment, Figures 1 to 12As shown, a slide groove 8 is provided on the telescopic beam 2, and the sliding path of the gangue baffle 3 is limited by the slide groove 8. The axis of the slide groove 8 is preferably perpendicular to the sliding direction of the telescopic beam 2, that is, the sliding direction of the gangue baffle 3 is perpendicular to the sliding direction of the telescopic beam 2. A slider 9 is provided on the gangue baffle 3, and the slider 9 slides with the slide groove 8. Preferably, the slider 9 is a rectangular strip structure, and the slider 9 is fixedly connected to the gangue baffle 3 by bolts. The slider 9 is arranged on the side where the gangue baffle 3 and the telescopic beam 2 are in contact, and the slider 9 is located in the middle of the gangue baffle 3. The slider 9 can be embedded in the slide groove 8 so that the slider 9 slides in the slide groove 8. A spring guide column 10 is provided on the gangue baffle plate 3, and the axis of the spring guide column 10 is parallel to the sliding track of the gangue baffle plate 3, a spring guide groove 11 is provided on the telescopic beam 2, a return spring 12 is provided in the spring guide groove 11, and the return spring 12 is sleeved on the outside of the spring guide column 10, one end of the return spring 12 abuts against the gangue baffle plate 3, specifically, the outer end of the return spring 12 abuts against the inner end of the gangue baffle plate 3, and the other end of the return spring 12 abuts against the telescopic beam 2. The return spring 12 is in a compressed state, and in a natural state, the return spring 12 can push the gangue baffle plate 3 to slide out of the gangue baffle plate accommodating area 6. Preferably, the extension line of the side wall of the telescopic beam outlet 5 in the length direction can surround the baffle plate outlet 7, that is, it can be considered that in the axial direction, the side wall of the baffle plate outlet 7 is contracted within the extension line of the telescopic beam outlet 5 in the axial direction, so that when the baffle plate 3 is accommodated in the baffle plate accommodating area 6 on the telescopic beam 2, the baffle plate 3 will not protrude from the baffle plate outlet 7, so that the telescopic beam 2 can drive the baffle plate 3 to stably retreat to the telescopic beam accommodating cavity 4. Preferably, two spring guide pillars 10 are provided on each baffle plate 3, and the spring guide pillars 10 are symmetrically distributed on the baffle plate 3 along its center line. When the slider 9 is set at the center line of the baffle plate 3, the two spring guide pillars 10 on the baffle plate 3 are symmetrically distributed about the axis of the slider 9, so as to ensure the stability of the baffle plate 3 when sliding on the telescopic beam 2. The top wall of the rock baffle plate outlet 7 can abut against the outer surface of the rock baffle plate 3 , thereby limiting the sliding path of the rock baffle plate 3 .

[0038] In one embodiment, a guide rod through groove 13 is provided on the gangue baffle plate 3, and the guide rod through groove 13 extends along the sliding direction of the telescopic beam 2. A guide rod 14 is provided in the telescopic beam accommodating chamber 4, and the rear end of the guide rod 14 is fixedly connected to the end wall of the telescopic beam accommodating chamber 4. Specifically, a first positioning hole 15 and a second positioning hole 16 are provided at the rear end of the guide rod 14, a pin 35 is installed in the first positioning hole 15, and a bolt is installed in the second positioning hole 16 for fixed connection with the telescopic beam 2. A guide inclined surface 17 is provided at the front end of the guide rod 14, and the guide inclined surface 17 protrudes from the telescopic beam outlet 5, that is, the guide inclined surface 17 is located in front of the telescopic beam outlet 5. The guide bevel 17 can contact the end wall of the guide rod groove 13. Under the guidance of the guide bevel 17, the guide rod 14 can penetrate into the guide rod groove 13, and the guide bevel 17 can make the rock baffle plate 3 overcome the elastic force of the return spring 12 to make a retreat movement, so that the rock baffle plate 3 retreats to the rock baffle plate accommodating area 6. Specifically, one end of the guide rod through groove 13 located on the inner side of the rock baffle plate accommodating area 6 is the inclined abutment end 36. When the rock baffle plate 3 is in front of the top beam 1 and in the expanded state, the side wall of the guide rod through groove 13 is axially aligned with the guide inclined surface 17, that is, the inclined abutment end 36 of the guide rod through groove 13 is axially aligned with the guide inclined surface 17. At this time, the telescopic beam 2 is controlled to slide backward, so that the telescopic beam 2 gradually slides into the top beam 1 until the inclined abutment end 36 abuts against the guide inclined surface 17. At this time, the rock baffle plate 3, under the guidance of the guide inclined surface 17, overcomes the elastic force of the return spring 12 and makes a retreat movement. As the telescopic beam 2 moves backward, the rock baffle plate 3 gradually retreats to the rock baffle plate accommodating area 6. When the guide rod 14 is inserted into the guide rod through groove 13 , the outer side wall of the guide rod 14 abuts against the side wall of the guide rod through groove 13 , and the guide rod 14 can limit the position of the gangue baffle plate 3 .

[0039] In one embodiment, the telescopic beam accommodating cavity 4 is provided with two, namely, a first cavity 18 and a second cavity 19; guide rods 14 are provided in the first cavity 18 and the second cavity 19, the first cavity 18 and the second cavity 19 are arranged along the working surface side end support direction of the working surface, the first cavity 18 and the second cavity 19 are both used to accommodate the telescopic beam 2, a slot 20 is provided between the first cavity 18 and the second cavity 19, and the telescopic beam 2 is provided with the first cavity 18 and the second cavity 19. 9 corresponding to the rock baffle plate accommodating area 6, there are two rock baffle plate accommodating areas 6, and the rock baffle plate accommodating areas 6 are also arranged along the side end support direction of the working face, and an insertion rod 21 is arranged between adjacent rock baffle plate accommodating areas 6, and the insertion rod 21 can be plugged into and matched with the slot 20, and the side wall of the insertion rod 21 is close to the side wall of the rock baffle plate accommodating area 6. Under the limiting action of the insertion rod 21 and the slot 20, it can ensure that the sliding between the telescopic beam 2 and the top beam 1 is more stable, and avoid the telescopic beam 2 from shaking to a large extent when sliding.

[0040] In one embodiment, the rock baffle plate 3 includes a first rock baffle plate 22 and a second rock baffle plate 23, the first rock baffle plate 22 and the second rock baffle plate 23 are arranged side by side along the length direction, and the adjacent side walls of the first rock baffle plate 22 and the second rock baffle plate 23 are close to or close to each other, a limiting groove 24 is provided on the first rock baffle plate 22, and the axis of the limiting groove 24 is parallel to the sliding direction of the first rock baffle plate 22, and a limiting hole is provided on the telescopic beam 2, and the limiting hole and the limiting groove 24 correspond to the movement trajectory of the rock baffle plate 3, and a pin shaft 35 is detachably installed in the limiting hole, and the limiting groove 24 can be limited by the pin shaft 35, thereby limiting the rock baffle plate 3 on the telescopic beam 2.

[0041] In this embodiment, the limiting holes on the telescopic beam 2 include a first limiting hole 25 and a second limiting hole 26, and the first limiting hole 25 corresponds to the initial end of the sliding track of the first baffle plate 22. A pin 35 is installed in the first limiting hole 25 to limit the limiting groove 24 of the first baffle plate 22, so that the first baffle plate 22 can be stably accommodated in the baffle plate accommodation area 6; the second limiting hole 26 corresponds to the terminal end of the sliding track of the first baffle plate 22. By installing the pin 35 in the second limiting hole 26, the maximum extension position of the first baffle plate 22 can be limited to prevent the first baffle plate 22 from detaching from the telescopic beam. A clamping block 27 is provided on the second baffle plate 23.

[0042] In one embodiment, Figures 1 to 12 As shown, the rear end of the telescopic beam 2 is provided with a rod slot 28, the axis of which is parallel to the sliding direction of the telescopic beam 2, and the rod slot 28 is plugged and matched with the guide rod 14. The cooperation between the rod slot 28 and the guide rod 14 can limit the telescopic beam 2, ensuring the accuracy and stability of the movement of the telescopic beam 2. A first rod hole 29 is provided between the rod slot 28 and the slag baffle accommodating area 6, the size of which matches the size of the guide rod 14, and the relative position of the top beam 1 and the telescopic beam 2 can be fine-tuned through the first rod hole 29, so that the guide rod 14 can be strictly aligned with the guide rod slot 13 in the slag baffle 3, ensuring the accuracy of the movement.

[0043] In this embodiment, a second rod passing hole 30 is further provided on the side of the rock baffle plate accommodating area 6 opposite to the first rod passing hole 29. The second rod passing hole 30 is located at the front end of the rock baffle plate accommodating area 6, and the size of the second rod passing hole 30 matches the size of the guide rod 14. Preferably, the size of the second rod passing hole 30 is consistent with the size of the first rod passing hole 29, and the second rod passing hole 30 and the first rod passing hole 29 are axially aligned. In this way, when the telescopic beam 2 retracts to the rear end to the telescopic beam accommodating cavity 4 in the top beam 1, the guide rod 14 first passes through the rod slot 28 on the telescopic beam 2, and then passes through the first rod hole 29, and the guide rod 14 abuts against the side wall of the guide rod through slot 13 on the rock baffle plate 3, so that the rock baffle plate 3 retracts to the rock baffle plate accommodating area 6 until the guide rod 14 passes through all the guide rod through slots 13 in the rock baffle plates 3, and the front end of the guide rod 14 is inserted into the second rod hole 30 on the telescopic beam 2, ensuring the stability and accuracy of the sliding of the telescopic beam 2.

[0044] In one embodiment, Figures 1 to 12 As shown, a jack 31 is provided on the top beam 1, and the base of the jack 31 is fixedly connected to the top beam 1, the movable end of the jack 31 is connected to the telescopic beam 2, and the movement direction of the movable end is parallel to the sliding direction of the top beam 1, and the telescopic beam 2 can be driven to slide by the jack 31. Preferably, two jacks 31 are provided, and they are symmetrical about the center line of the top beam 1.

[0045] In this embodiment, a telescopic beam ear plate 32 is provided at the front end of the telescopic beam 2, and the telescopic beam ear plate 32 is connected to the movable end of the jack 31. A top beam ear plate 33 is provided on the top beam 1, and the top beam ear plate 33 is connected to the base of the jack 31.

[0046] When the supporting device is in the unfolded state, the piston rod of the jack 31 extends out to push the combination of the telescopic beam 2 and the rock baffle plate 3 forward from the telescopic beam accommodating cavity 4 of the top beam 1. Since the guide rod 14 is fixed in the top beam 1, when the telescopic beam 2 moves forward a certain distance, the guide rod 14 is disengaged from the guide rod slot 13 of the first baffle plate 22, and under the action of the tension of the return spring 12, the first baffle plate 22 is pushed out laterally, and when the end of the limit slot 24 of the first baffle plate 22 contacts the limit pin 35 at the second limit hole 26 of the telescopic beam 2, the first baffle plate 22 reaches the maximum lateral extension; the telescopic beam 2 continues to move forward a certain distance, the guide rod 14 is disengaged from the guide rod slot 13 of the second baffle plate 23, and under the action of the tension of the return spring 12, the second baffle plate 23 is pushed out laterally, and after the block 27 of the second baffle plate 23 contacts the first baffle plate 22, the second baffle plate 23 reaches the maximum lateral extension. By analogy, multiple second baffle plates 23 can be arranged side by side. Therefore, the slag plate 3 can automatically extend to the side end of the working face as the telescopic beam 2 moves forward, that is, it can provide support along the side end support direction of the working face, thereby realizing the side end sealing function of the working face. In the present invention, when the telescopic beam 2 is extended, the lateral sealing mechanism (slag plate 3) is deployed, increasing the support area of ​​the roof and reducing the roof leakage area, which can greatly reduce safety hazards, speed up the coal mining advancement, and bring huge economic benefits.

[0047] When the support device is in the folded state, the piston rod of the jack 31 is retracted, and the telescopic beam 2 with the rock baffle plate 3 in the lateral extended state is gradually pulled back into the telescopic beam accommodating chamber 4 of the top beam 1. The guide slope 17 at the front end of the guide rod 14 enters the guide rod through groove 13 of the second rock baffle plate 23 and contacts the inner wall of the guide rod through groove 13 of the second rock baffle plate 23. The lateral component of the extrusion force of the guide slope 17 of the guide rod 14 overcomes the tension of the return spring 12, and the second rock baffle plate 23 is retracted into the rock baffle accommodating area 6 on the side of the telescopic beam 2. Therefore, as the piston rod of the jack 31 is gradually retracted, the second rock baffle plate 23 and the first rock baffle plate 22 are also pressed back into the rock baffle accommodating area 6 of the telescopic beam 2 step by step, thereby completing the release of the lateral closing function and the retraction of the telescopic beam 2 at the same time.

[0048] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0049] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A support device for working face support, characterized in that: include: A top beam (1), wherein two ends of the top beam (1) along the mining direction of the working face are respectively a front end and a rear end, and a telescopic beam accommodating cavity (4) is provided at the front end of the top beam (1); A telescopic beam (2), the telescopic beam (2) being slidably connected to the telescopic beam accommodating cavity (4), the sliding direction of the telescopic beam (2) being parallel to a line connecting the front end and the rear end of the top beam (1), the telescopic beam accommodating cavity (4) having a telescopic beam outlet (5) for the telescopic beam (2) to slide out, and both ends of the telescopic beam (2) along the side end supporting direction of the working face are provided with a rock baffle accommodating area (6); A rock baffle plate (3), the rock baffle plate (3) is slidably connected to the rock baffle plate accommodating area (6), the sliding direction of the rock baffle plate (3) is along the side end support direction of the working face, and the rock baffle plate accommodating area (6) has a rock baffle plate outlet (7) for the rock baffle plate (3) to slide out.

2. The support device for working face support according to claim 1, characterized in that: The telescopic beam (2) is provided with a slide groove (8), the rock baffle plate (3) is provided with a slider (9) which is slidably matched with the slide groove (8), the rock baffle plate (3) is provided with a spring guide column (10), the axis of the spring guide column (10) is parallel to the sliding track of the rock baffle plate (3), the telescopic beam (2) is provided with a spring guide groove (11), a return spring (12) is provided in the spring guide groove (11), the return spring (12) is sleeved on the spring guide column (10), one end of the return spring (12) is in contact with the rock baffle plate (3), and the other end of the return spring (12) is in contact with the telescopic beam (2).

3. The support device for working face support according to claim 2, characterized in that: The rock baffle plate (3) is provided with a guide rod through groove (13), and the guide rod through groove (13) extends along the sliding direction of the telescopic beam (2); a guide rod (14) is provided in the telescopic beam accommodating cavity (4), the rear end of the guide rod (14) is fixedly connected to the telescopic beam accommodating cavity (4), and the front end of the guide rod (14) is provided with a guide inclined surface (17) for guiding the guide rod (14) to penetrate into the guide rod through groove (13); when the guide rod (14) penetrates into the guide rod through groove (13), the rock baffle plate (3) slides into the rock baffle plate accommodating area (6).

4. The support device for working face support according to claim 3, characterized in that: The telescopic beam accommodating cavity (4) comprises a first cavity (18) and a second cavity (19) arranged in parallel, and a slot (20) is arranged between the first cavity (18) and the second cavity (19); the telescopic beam (2) is provided with rock baffle plate accommodating areas (6) respectively corresponding to the first cavity (18), and an insertion rod (21) is arranged between adjacent rock baffle plate accommodating areas (6), and the insertion rod (21) is plugged into and matched with the slot (20).

5. The support device for working face support according to claim 1, characterized in that: The gangue baffle plate (3) comprises a first gangue baffle plate (22) and a second gangue baffle plate (23) arranged side by side, the first gangue baffle plate being provided with a limiting groove (24), the axis of the limiting groove (24) being parallel to the sliding direction of the first gangue baffle plate (22); the telescopic beam (2) being provided with a limiting hole corresponding to the sliding track of the limiting groove (24), the limiting hole being provided with a detachable pin shaft (35) for being fixedly connected to the limiting groove (24); the second gangue baffle plate (23) being provided with a clamping block (27) for limiting abutment with the first gangue baffle plate (22).

6. The support device for working face support according to claim 5, characterized in that: The limiting holes include a first limiting hole (25) and a second limiting hole (26), wherein the first limiting hole (25) corresponds to an initial end of a sliding track of the first rock baffle plate (22), and the second limiting hole (26) corresponds to an end end of a sliding track of the first rock baffle plate (22).

7. The support device for working face support according to claim 3, characterized in that: The rear end of the telescopic beam (2) is provided with a rod passing groove (28) for plugging and matching with the guide rod (14), and a first rod passing hole (29) for the guide rod (14) to pass through is provided between the rod passing groove (28) and the gangue baffle accommodating area (6), and the size of the first rod passing hole (29) matches the size of the guide rod (14).

8. The support device for working face support according to claim 7, characterized in that: A second rod hole (30) is provided at the front end of the gangue baffle accommodating area (6), the second rod hole (30) is arranged opposite to the first rod hole (29) and is axially aligned, and the size of the second rod hole (30) matches the size of the guide rod (14).

9. The support device for working face support according to claim 1, characterized in that: A jack (31) is provided on the top beam (1); the top beam (1) is fixedly connected to a base of the jack (31); and a movable end of the jack (31) is connected to the telescopic beam (2).

10. The support device for working face support according to claim 9, characterized in that: A telescopic beam ear plate (32) is provided at the front end of the telescopic beam (2), and the movable end of the jack (31) is connected to the telescopic beam ear plate (32).

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