A mining advanced support system

Abstract

The present invention provides a mining advance support system, which belongs to the technical field of mining machinery and equipment. The mining advance support system includes a main support mechanism, which is used to support the tunnel roof; an auxiliary support mechanism, which is used to support the tunnel roof. In the excavation direction, the auxiliary support mechanism is used to be movably installed on the main support mechanism, and the support surface of the auxiliary support mechanism at least partially overlaps with the support surface of the main support mechanism; and a push cylinder, one end of the push cylinder is connected to the main support mechanism, and the other end of the push cylinder is connected to the auxiliary support mechanism, and the push cylinder is used to drive the auxiliary support mechanism and the main support mechanism to shift relative to each other in the excavation direction. By making the support surface of the auxiliary support mechanism at least partially overlap with the support surface of the main support mechanism, and driving the auxiliary support mechanism and the main support mechanism to shift relative to each other in the excavation direction by the push cylinder, the continuity of the mining advance support system in supporting the tunnel during the forward movement process can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mining machinery and equipment, and in particular to a mining advance support system. Background Art

[0002] In underground working face tunneling construction, anchor miners are often used for tunneling operations, achieving rapid excavation in coal, semi-coal, and soft rock tunnels and tunnels. During rapid excavation, the large cutter head prevents the anchoring equipment from being carried nearby. This leaves a long, unprotected tunnel roof between the cutter head and the anchoring equipment. The tunneling roof, formed by the cutter head, is unstable, often subject to falling debris and coal blocks, posing a threat to both operators and the cutter head.

[0003] Currently, one approach is to integrate the support system with the anchor drill, placing both support and anchoring on the main cutting machine, which then advances as the cutting machine excavates, thereby protecting and stabilizing the tunnel between the cutting surface and the anchoring surface. However, this support system is mounted on the main cutting machine and moves forward and backward with it. When the cutting machine advances, the support system must be pre-released. Once the cutting machine has reached its proper position, the support system can be operated to protect the tunnel. This can affect cutting efficiency and pacing. Furthermore, while the cutting machine advances, the tunnel is unprotected, posing a safety hazard. Another approach is to create an advanced support system consisting of a main support and auxiliary support brackets, arranged in a front-to-rear arrangement. The main and auxiliary support brackets are connected by a push cylinder. When supporting in the excavation direction, the push cylinder uses the auxiliary support bracket as a fulcrum to drive the main support bracket forward. Subsequently, the push cylinder uses the main support bracket as a fulcrum to move the auxiliary support bracket forward, completing the advanced support of the tunnel roof. However, in this type of advanced support system, when the main support moves forward relative to the auxiliary support, there is a long support gap in the tunnel roof between the main support and the auxiliary support, which fails to provide adequate protection for the tunnel roof and poses certain safety hazards. Summary of the Invention

[0004] The present invention aims to solve the problem of how to improve the continuity of the advance support system for the tunnel support to a certain extent.

[0005] In order to solve the above problems at least to a certain extent, the present invention provides a mining advance support system, which includes a main support mechanism, which is used to support the tunnel roof; an auxiliary support mechanism, which is used to support the tunnel roof, and in the excavation direction, the auxiliary support mechanism is used to be movably installed on the main support mechanism, and the support surface of the auxiliary support mechanism at least partially overlaps with the support surface of the main support mechanism; a push cylinder, one end of the push cylinder is connected to the main support mechanism, and the other end of the push cylinder is connected to the auxiliary support mechanism, and the push cylinder is used to drive the auxiliary support mechanism and the main support mechanism to move relative to each other in the excavation direction.

[0006] Optionally, the main support mechanism includes a first lifting bracket, a first crossbeam, and a first supporting longitudinal beam. In a first direction, two first lifting brackets are spaced apart and connected by the first crossbeam. In the excavation direction, two first crossbeams are spaced apart on the first lifting bracket. In the first direction, a plurality of first supporting longitudinal beams are spaced apart on the first crossbeam. The first lifting bracket is used to drive the first supporting longitudinal beam to move up and down via the first crossbeam. The first direction is perpendicular to the excavation direction.

[0007] The secondary support mechanism includes a second lifting bracket, a second crossbeam, and a second supporting longitudinal beam. In the first direction, two second lifting brackets are spaced apart and connected by the second crossbeam. In the excavation direction, two second crossbeams are spaced apart on the second lifting bracket, wherein one second crossbeam is located between two first crossbeams and is used to move between the two first crossbeams. In the first direction, multiple second supporting longitudinal beams are spaced apart on the second crossbeam, and the second supporting longitudinal beams are staggered with the first supporting longitudinal beams. The second lifting bracket is used to drive the second supporting longitudinal beams to move up and down via the second crossbeam.

[0008] The mining advance support system further includes a circulating guard plate, which is arranged around the first supporting longitudinal beam and the second supporting longitudinal beam.

[0009] Optionally, the mining advance support system further includes a running mechanism, which is connected to the main support mechanism and is used to drive the main support mechanism to run.

[0010] Optionally, the first lifting bracket includes a first lifting assembly and a first mounting longitudinal beam, the first lifting assembly being installed between the first mounting longitudinal beam and the traveling mechanism and being used to drive the first mounting longitudinal beam to move up and down, the first mounting longitudinal beam being provided at both ends thereof with the first crossbeams respectively, and the second crossbeam being located between the two first crossbeams and being used to move on the first mounting longitudinal beam between the two first crossbeams;

[0011] The second lifting bracket includes a second lifting component, a second mounting longitudinal beam and a base. The two ends of the second lifting component are respectively connected to the second mounting longitudinal beam and the base. The two ends of the second mounting longitudinal beam are respectively provided with the second cross beam. The second lifting component is used to drive the second mounting longitudinal beam and the base to rise and fall.

[0012] Optionally, the main support mechanism further includes a first lifting device and a first mounting seat, the first supporting longitudinal beam is connected to the first crossbeam via the first mounting seat, one end of the first lifting device is connected to the first mounting seat, and the other end of the first lifting device is connected to the first crossbeam;

[0013] And / or, the secondary support mechanism also includes a second lifting device and a second mounting seat, the second supporting longitudinal beam is connected to the second cross beam through the second mounting seat, one end of the second lifting device is connected to the second mounting seat, and the other end of the second lifting device is connected to the second cross beam.

[0014] Optionally, the main support mechanism further includes a first swing arm and a first rotating member, wherein the two first swing arms are rotatably connected to both ends of the first supporting longitudinal beam respectively, and the first rotating member is used to drive the first swing arm to rotate;

[0015] And / or, the auxiliary support mechanism further includes a second swing arm and a second rotating member, the two second swing arms are respectively rotatably connected to the two ends of the second supporting longitudinal beam, and the second rotating member is used to drive the second swing arm to rotate.

[0016] Optionally, the main support mechanism further includes a telescopic swing arm and a third rotating member. The telescopic swing arm is rotatably connected to one end of the first supporting longitudinal beam toward the excavation direction, and the third rotating member is used to drive the telescopic swing arm to rotate.

[0017] Optionally, in the excavation direction, a plurality of first rollers are respectively arranged at intervals on the first supporting longitudinal beam, the second supporting longitudinal beam, the first swing arm and the second swing arm.

[0018] Optionally, the main support mechanism also includes a first side support assembly, which includes a first mounting frame, a first side support beam and a first telescopic member. In the first direction, the first mounting frame is slidably connected to the first mounting longitudinal beam, and the first telescopic member is used to drive the first mounting frame to move in the first direction. In the second direction, the first side support beam is arranged at intervals on the first mounting frame, and the second direction, the first direction and the excavation direction are arranged perpendicular to each other.

[0019] Optionally, the secondary support mechanism also includes a second side support assembly, the second side support assembly includes a second mounting frame, a second side support beam and a second telescopic member, in the first direction, the second mounting frame is slidably connected to the second mounting longitudinal beam, the second telescopic member is used to drive the second mounting frame to move in the first direction, and in the second direction, a plurality of second side support beams are spaced apart on the second mounting frame and staggered with the first side support beam.

[0020] Compared with the prior art, the beneficial effects of the present invention include the following aspects:

[0021] The auxiliary support mechanism is movably installed on the main support mechanism, and the support surface of the auxiliary support mechanism at least partially overlaps with the support surface of the main support mechanism, and one end of the push cylinder is connected to the main support mechanism, and the other end of the push cylinder is connected to the auxiliary support mechanism. When the main support mechanism and the auxiliary support mechanism simultaneously support the tunnel roof, when the mining advance support system needs to support in the direction of excavation, the auxiliary support mechanism releases the support, and with the main support mechanism as the fulcrum, the push cylinder contracts to move the auxiliary support mechanism forward, and then the auxiliary support mechanism supports the tunnel roof. At this time, the support surface of the auxiliary support mechanism for the tunnel roof is at least partially overlapped with the support surface of the main support mechanism The support surface of the tunnel roof overlaps, the main support mechanism releases the support, and with the auxiliary support mechanism as the fulcrum, the push cylinder is extended, so that the main support mechanism moves forward and supports the tunnel roof, completing the movement of the mining advance support system, which can move forward synchronously with the forward rhythm of the cutting host. Moreover, compared with the existing advance support system, during the advancement of the mining advance support system, the support surface of the auxiliary support mechanism is at least partially overlapped with the support surface of the main support mechanism, and the auxiliary support mechanism and the main support mechanism are driven by the push cylinder to move relative to each other in the excavation direction, which can improve the continuity of the mining advance support system for the tunnel during the forward movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of the mining advance support system in an embodiment of the present invention;

[0023] Figure 2 is a structural schematic diagram of the auxiliary support mechanism in an embodiment of the present invention when it is located at a first preset position relative to the main support mechanism;

[0024] Figure 3 is a structural schematic diagram of the auxiliary support mechanism in an embodiment of the present invention when it is located at a second preset position relative to the main support mechanism;

[0025] Figure 4 A schematic structural diagram of a main support mechanism in an embodiment of the present invention;

[0026] Figure 5 is a structural schematic diagram of a secondary support mechanism in an embodiment of the present invention;

[0027] Figure 6 is a schematic structural diagram of a first side support assembly in an embodiment of the present invention;

[0028] Figure 7 is a schematic structural diagram of a second side support assembly in an embodiment of the present invention;

[0029] Figure 8 Schematic diagram of the structure of the circulation guard plate in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1-main support mechanism, 11-first lifting bracket, 12-first crossbeam, 13-first supporting longitudinal beam, 14-first lifting device, 15-first mounting seat, 16-first swing arm, 17-first rotating member, 18-telescopic swing arm, 19-third rotating member, 111-first mounting longitudinal beam, 112-first lifting assembly, 113-first slide, 1121-first lifting cylinder, 1122-first telescopic sleeve, 2-second support mechanism, 21-second lifting bracket, 22-second crossbeam, 23-second supporting longitudinal beam, 24-second lifting device, 25-second mounting seat, 26-second swing arm, 27-second rotating member, 211- The second mounting longitudinal beam, 212-the second lifting assembly, 2121-the second lifting cylinder, 2122-the second telescopic sleeve, 213-the base, 214-the second slide, 3-the circulation guard plate, 31-the rubber plate, 32-the channel steel, 33-the nylon pressure block, 34-the connecting rope, 4-the walking mechanism, 5-the first side support assembly, 51-the first mounting frame, 52-the first side support beam, 53-the first telescopic member, 54-the first strip slider, 6-the second side support assembly, 61-the second mounting frame, 62-the second side support beam, 63-the second telescopic member, 64-the second strip slider, 7-the first roller, 8-the pushing cylinder, 81-the guard plate, 9-the second roller. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] Throughout this specification, references to the terms "embodiment," "one embodiment," and "an implementation" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

[0035] In the accompanying drawings, the Z-axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction of the arrow of the Z-axis) represents the top, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the bottom; the X-axis in the accompanying drawings represents the horizontal direction and is designated as the left and right position, and the positive direction of the X-axis (that is, the direction of the arrow of the X-axis) represents the right side, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the left side; the Y-axis in the accompanying drawings represents the front and back position, and the positive direction of the Y-axis (that is, the direction of the arrow of the Y-axis) represents the front side, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the rear side; it should be noted that the aforementioned representations of the Z-axis, Y-axis, and X-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] like Figures 1 to 4 As shown, in order to solve the above technical problems, an embodiment of the present invention provides a mining advance support system, which includes a main support mechanism 1, which is used to support the tunnel roof; an auxiliary support mechanism 2, which is used to support the tunnel roof. In the excavation direction, the auxiliary support mechanism 2 is used to be movably installed on the main support mechanism 1, and the support surface of the auxiliary support mechanism 2 at least partially overlaps with the support surface of the main support mechanism 1; a pushing cylinder 8, one end of the pushing cylinder 8 is connected to the main support mechanism 1, and the other end of the pushing cylinder 8 is connected to the auxiliary support mechanism 2, and the pushing cylinder 8 is used to drive the auxiliary support mechanism 2 and the main support mechanism 1 to move relative to each other in the excavation direction.

[0037] In this embodiment, if Figures 1 to 3As shown, when the main support mechanism 1 and the auxiliary support mechanism 2 are supporting at the same time, the support surface of the auxiliary support mechanism 2 in the XY plane can be completely covered by the support surface of the main support mechanism 1 in the XY plane, or the support surface of the auxiliary support mechanism 2 in the XY plane partially overlaps with the support surface of the main support mechanism 1 in the XY plane. At this time, when the auxiliary support mechanism 2 is located in the first preset position facing the excavation direction (positive direction of the Y axis), the total support surface of the main support mechanism 1 and the auxiliary support mechanism 2 is the smallest; when the auxiliary support mechanism 2 is located in the second preset position, the total support surface of the main support mechanism 1 and the auxiliary support mechanism 2 is the largest.

[0038] It should be noted that the support surface of the main support mechanism 1 refers to the regional plane where the support position of the main support mechanism 1 for the tunnel roof is located, and the support surface of the auxiliary support mechanism 2 refers to the regional plane where the support position of the auxiliary support mechanism 2 for the tunnel roof is located. For example, when the main support mechanism 1 and the auxiliary support mechanism 2 respectively use multiple first support longitudinal beams 13 and multiple second support longitudinal beams 23 to support the tunnel roof, the regional plane surrounded by the support surfaces of the multiple first support longitudinal beams 13 is the support surface of the main support mechanism 1, and the regional plane surrounded by the support surfaces of the multiple second support longitudinal beams 23 is the support surface of the auxiliary support mechanism 2, and the two have an overlapping area.

[0039] The advantage of such an arrangement is that the auxiliary support mechanism 2 is movably mounted on the main support mechanism 1, the support surface of the auxiliary support mechanism 2 at least partially overlaps with the support surface of the main support mechanism 1, and one end of the push cylinder 8 is connected to the main support mechanism 1, and the other end of the push cylinder 8 is connected to the auxiliary support mechanism 2. When the main support mechanism 1 and the auxiliary support mechanism 2 simultaneously support the roadway roof, when the mining advance support system needs to support in the direction of excavation, the auxiliary support mechanism 2 releases the support, and with the main support mechanism 1 as the fulcrum, the push cylinder 8 contracts, causing the auxiliary support mechanism 2 to move forward, and then the auxiliary support mechanism 2 supports the roadway roof. At this time, the support surface of the roadway roof by the auxiliary support mechanism 2 is at least partially overlapped. The auxiliary support mechanism 2 partially overlaps with the support surface of the tunnel roof by the main support mechanism 1, and the main support mechanism 1 releases the support, and with the auxiliary support mechanism 2 as the fulcrum, the push cylinder 8 is extended, so that the main support mechanism 1 moves forward and supports the tunnel roof, completing the movement of the mining advance support system, and can move forward synchronously with the forward rhythm of the cutting host. Moreover, compared with the existing advance support system, during the advancement of the mining advance support system, the support surface of the auxiliary support mechanism 2 is at least partially overlapped with the support surface of the main support mechanism 1, and the auxiliary support mechanism 2 and the main support mechanism 1 are driven by the push cylinder 8 to move relative to each other in the excavation direction, which can improve the continuity of the mining advance support system for the tunnel during the forward movement.

[0040] like Figures 1 to 8As shown, optionally, the main support mechanism 1 includes a first lifting bracket 11, a first crossbeam 12 and a first supporting longitudinal beam 13. In the first direction, two first lifting brackets 11 are arranged at intervals and connected by the first crossbeam 12. In the excavation direction, two first crossbeams 12 are arranged at intervals on the first lifting bracket 11. In the first direction, multiple first supporting longitudinal beams 13 are arranged at intervals on the first crossbeam 12. The first lifting bracket 11 is used to drive the first supporting longitudinal beam 13 to move up and down through the first crossbeam 12. The first direction is arranged perpendicular to the excavation direction.

[0041] The secondary support mechanism 2 includes a second lifting bracket 21, a second crossbeam 22, and a second supporting longitudinal beam 23. In the first direction, two second lifting brackets 21 are spaced apart and connected by the second crossbeam 22. In the excavation direction, two second crossbeams 22 are spaced apart on the second lifting bracket 21. One second crossbeam 22 is located between two first crossbeams 12 and is used to move between the two first crossbeams 12. In the first direction, multiple second supporting longitudinal beams 23 are spaced apart on the second crossbeam 22, and the second supporting longitudinal beams 23 are staggered with the first supporting longitudinal beams 13. The second lifting bracket 21 is used to drive the second supporting longitudinal beams 23 to move up and down through the second crossbeam 22.

[0042] The mining advance support system further includes a circulating guard plate 3 , which is arranged around the first supporting longitudinal beam 13 and the second supporting longitudinal beam 23 .

[0043] In this embodiment, the first crossbeam 12 extends along the X-axis, and its ends are connected to the two first lifting brackets 11. The connection method can be a detachable connection method such as a threaded connection, or a fixed connection method such as welding, which is not limited here. The two first crossbeams 12 are spaced apart in the excavation direction (Y-axis direction). In the first direction (X-axis direction), multiple first support longitudinal beams 13 are spaced apart on the first crossbeam 12. For example, the number of first support longitudinal beams 13 can be four. The first support longitudinal beams 13 extend along the Y-axis, and their ends are connected to the two first crossbeams 12 respectively.

[0044] In this embodiment, the two second lifting brackets 21 can be arranged on the outside of the two first lifting brackets 11, and the two ends of the second crossbeam 22 are respectively connected to the two second lifting brackets 21. The second crossbeam 22 extends along the X-axis direction, and the two second crossbeams 22 are spaced apart in the Y-axis direction. Among them, one second crossbeam 22 is located between the two first crossbeams 12, and the second crossbeam 22 is located between the first lifting bracket 11 and the first supporting longitudinal beam 13. The distance between the two first crossbeams 12 is the travel range of the secondary support mechanism 2 relative to the main support mechanism 1. When the second crossbeam 22 is close to a first crossbeam 12 in the positive direction of the Y-axis, the auxiliary support mechanism 2 can move relative to the main support mechanism 1. When in contact with each other, the secondary support mechanism 2 is located at the first preset position. When the second crossbeam 22 is in contact with another first crossbeam 12 located in the negative direction of the Y axis, the secondary support mechanism 2 is located at the second preset position. The distance between the first preset position and the second preset position is the range of relative displacement of the main support mechanism 1 and the secondary support mechanism 2, which can be, for example, 5m-10m, preferably 8m. The other second crossbeam 22 is located on the side of the first lifting bracket 11 in the negative direction of the Y axis. It should be noted that the spacing between the two second crossbeams 22 must meet the requirements of the range of relative displacement of the secondary support mechanism 2 to the main support mechanism 1. In the X-axis direction, multiple second support longitudinal beams 23 are spaced apart on the two second crossbeams 22, and the multiple second support longitudinal beams 23 are staggered with the multiple first support longitudinal beams 13 in the X-axis direction.

[0045] For example, the circulating guard plate 3 may include a rubber plate 31 having a ring-shaped structure. The rubber plate 31 is sleeved on the first supporting longitudinal beam 13, the second supporting longitudinal beam 23, the first crossbeam 12, and the second crossbeam 22. In the Y-axis direction, the rubber plate 31 is provided with a plurality of spaced channel steels 32. The grooves of the channel steels 32 are embedded with nylon pressure blocks 33. Adjacent channel steels 32 are connected by connecting ropes 34, which may be steel wire ropes. It should be noted that the length of the circulating guard plate 3 can be set according to the relative displacement distance between the main support mechanism 1 and the auxiliary support mechanism 2.

[0046] In this way, in the first direction, the two first lifting supports 11 are arranged at intervals and connected by the first cross beam 12. In the excavation direction, the two first cross beams 12 are arranged at intervals on the first lifting support 11. In the first direction, a plurality of first supporting longitudinal beams 13 are arranged at intervals on the first cross beam 12. The first lifting support 11 drives the first supporting longitudinal beam 13 to move upward, thereby realizing the support of the tunnel roof by the main supporting mechanism 1; and, in the first direction, the two second lifting supports 21 are arranged at intervals and connected by the second cross beam 22. In the excavation direction, the two second cross beams 22 are arranged at intervals on the second lifting supports 21, wherein a second cross beam 22 is located between the two first cross beams 12 and is used to move between the two first cross beams 12. In the first direction, a plurality of second supporting longitudinal beams 23 are arranged at intervals on the second cross beam 22, and the circulating guard plate 3 is arranged around the first supporting longitudinal beam 13 and the second supporting longitudinal beam 23. When the supporting mechanism 1 and the auxiliary supporting mechanism 2 simultaneously hold the tunnel roof tightly, when the mining advance supporting system needs to support in the excavation direction, the auxiliary supporting mechanism 2 drives the second supporting longitudinal beam 23 to descend through the second lifting bracket 21 to loosen the support, and with the main supporting mechanism 1 as the fulcrum, the push cylinder 8 contracts, driving the second cross beam 22 located between the two first cross beams 12 to move forward, so as to realize the forward movement of the auxiliary supporting mechanism 2, and then the auxiliary supporting mechanism 2 drives the second supporting longitudinal beam 23 to rise through the second lifting bracket 21, and holds the tunnel roof tightly through the circulating guard plate 3, the main supporting mechanism 1 drives the first supporting longitudinal beam 13 through the first lifting bracket 11 to loosen the support, and then with the auxiliary supporting mechanism 2 as the fulcrum, the push cylinder 8 extends, so that the main supporting mechanism 1 moves forward, and then the main supporting mechanism 1 drives the second supporting longitudinal beam 23 to move upward through the first lifting bracket 11, and supports the tunnel roof through the circulating guard plate 3, completing the movement of the mining advance supporting system. The second supporting longitudinal beam 23 is staggered with the first supporting longitudinal beam 13, so that when the main supporting mechanism 1 and the auxiliary supporting mechanism 2 are relatively displaced forward and backward, the first supporting longitudinal beam 13 and the second supporting longitudinal beam 23 do not interfere with each other; at the same time, the circulating guard plate 3 is arranged around the first supporting longitudinal beam 13 and the second supporting longitudinal beam 23, which can improve the stability of the support of the main supporting mechanism 1 and the auxiliary supporting mechanism 2 on the tunnel roof, so that the support surfaces of the main supporting mechanism 1 and the auxiliary supporting mechanism 2 in the XY plane at least partially overlap, and when one of the supporting mechanisms moves relative to the other supporting mechanism, it does not interfere with the support of the tunnel roof by the other supporting mechanism, which is highly practical.

[0047] like Figures 1 to 4 As shown, optionally, the mining advance support system further includes a running mechanism 4, which is connected to the main support mechanism 1 and is used to drive the main support mechanism 1 to run.

[0048] In this embodiment, the running mechanism 4 is connected to the bottom of the first lifting bracket 11. The running mechanism 4 can be a wheeled running mechanism 4 or a crawler running mechanism 4, without limitation. A guard plate 81 is provided on the running mechanism 4. The guard plate 81 is located outside the push cylinder 8 to provide a certain degree of protection for the push cylinder 8.

[0049] In this way, the main support mechanism 1 is driven to move in the tunnel by the traveling mechanism 4, and the pushing cylinder 8 only needs to be used to drive the auxiliary support mechanism 2 to move on the main support mechanism 1. The operation is convenient, and the forward movement speed of the mining advance system is also improved. It can better match the excavation speed of the cutting host and is highly practical.

[0050] like Figures 1 to 5 As shown, optionally, the first lifting bracket 11 includes a first lifting assembly 112 and a first mounting longitudinal beam 111. The first lifting assembly 112 is installed between the first mounting longitudinal beam 111 and the running mechanism 4 and is used to drive the first mounting longitudinal beam 111 to move up and down. A first crossbeam 12 is provided at each end of the first mounting longitudinal beam 111. The second crossbeam 22 located between the two first crossbeams 12 is used to move on the first mounting longitudinal beam 111 between the two first crossbeams 12.

[0051] The second lifting bracket 21 includes a second lifting component 212, a second mounting longitudinal beam 211 and a base 213. The two ends of the second lifting component 212 are respectively connected to the second mounting longitudinal beam 211 and the base 213. The two ends of the second mounting longitudinal beam 211 are respectively provided with a second cross beam 22. The second lifting component 212 is used to drive the second mounting longitudinal beam 211 and the base 213 to rise and fall.

[0052] Exemplarily, the first lifting assembly 112 may include a first lifting cylinder 1121 and a first telescopic sleeve 1122, the two ends of the first telescopic sleeve 1122 are respectively connected to the first mounting longitudinal beam 111 and the running mechanism 4, the number of the first telescopic sleeve 1122 and the first lifting cylinder 1121 can be two respectively, and the first telescopic sleeve 1122 and the first lifting cylinder 1121 are arranged correspondingly, and the two ends of the first mounting longitudinal beam 111 are respectively connected to the first telescopic sleeve 1122 and the first lifting cylinder 1121 on both sides to stably drive the first mounting longitudinal beam 111 to move up and down.

[0053] Exemplarily, the second lifting assembly 212 may include a second lifting cylinder 2121 and a second telescopic sleeve 2122, the two ends of the second telescopic sleeve 2122 are respectively connected to the second mounting longitudinal beam 211 and the base 213, the base 213 is a component that transfers the pressure of the tunnel roof to the tunnel floor and stabilizes the second lifting bracket 21, and can be a box-type structure formed by welding steel plates. In the Y-axis direction, the two ends of the top of the second mounting longitudinal beam 211 are respectively connected to the second cross beam 22, and the connection method can be a fixed connection method such as welding, or a detachable connection method such as threaded connection. The number of the second telescopic sleeve 2122 and the second lifting cylinder 2121 can be two respectively, and the second telescopic sleeve 2122 and the second lifting cylinder 2121 are correspondingly arranged. The two ends of the bottom of the second mounting longitudinal beam 211 are respectively connected to the second telescopic sleeve 2122 and the second lifting cylinder 2121 on both sides to stably drive the second mounting longitudinal beam 211 to move up and down.

[0054] It should be noted that the height between the first mounting longitudinal beam 111 and the first supporting longitudinal beam 13 and the second mounting longitudinal beam 211 and the second supporting longitudinal beam 23 must meet the requirements of independent support of the main support mechanism 1 and the auxiliary support mechanism 2, that is, when the main support mechanism 1 releases the branch, it does not affect the support of the tunnel roof by the auxiliary support mechanism 2, that is, in the process of the first lifting component 112 driving the first supporting longitudinal beam 13 to descend, it does not interfere with the second cross beam 22 located between the first mounting longitudinal beam 111 and the first supporting longitudinal beam 13, and when the auxiliary support mechanism 2 releases the branch, it does not affect the support of the tunnel roof by the main support mechanism 1, that is, in the process of the second lifting component 212 driving the second supporting longitudinal beam 23 to descend, it does not interfere with the first cross beam 12.

[0055] In this way, the first lifting assembly 112 is installed between the first mounting longitudinal beam 111 and the running mechanism 4, and drives the first mounting longitudinal beam 111 to rise and fall, thereby realizing the support of the tunnel roof, with a simple structure and strong practicality, and the second crossbeam 22 located between the two first crossbeams 12 is used to move on the first mounting longitudinal beam 111 between the two first crossbeams 12. On the one hand, the first mounting longitudinal beam 111 has a certain supporting effect on the secondary support mechanism 2, and on the other hand, it is also convenient for the second crossbeam 22 to move on the first mounting longitudinal beam 111 to realize the secondary support mechanism 2 and the main support mechanism. The relative displacement between the mechanisms 1; the two ends of the second lifting component 212 are respectively connected to the second mounting longitudinal beam 211 and the base 213. In the process of the auxiliary support mechanism 2 supporting the tunnel roof, the second lifting component 212 first drives the base 213 to descend to contact with the tunnel bottom plate to realize the support of the bottom plate on the base 213, and then the second lifting component 212 drives the second supporting longitudinal beam 23 on the second cross beam 22 provided at both ends of the second mounting longitudinal beam 211 to move upward through the second mounting longitudinal beam 211, and realizes the support of the tunnel roof through the circulating guard plate 3.

[0056] like Figures 1 to 5 As shown, optionally, the main support mechanism 1 further includes a first lifting device 14 and a first mounting seat 15, the first supporting longitudinal beam 13 is connected to the first crossbeam 12 via the first mounting seat 15, one end of the first lifting device 14 is connected to the first mounting seat 15, and the other end of the first lifting device 14 is connected to the first crossbeam 12;

[0057] And / or, the secondary support mechanism 2 also includes a second lifting device 24 and a second mounting seat 25, the second supporting longitudinal beam 23 is connected to the second cross beam 22 through the second mounting seat 25, one end of the second lifting device 24 is connected to the second mounting seat 25, and the other end of the second lifting device 24 is connected to the second cross beam 22.

[0058] For example, the connection between the first supporting longitudinal beam 13 and the first mounting seat 15 can be a fixed connection such as welding, or a detachable connection such as threaded connection or clamping, without limitation. The first lifting device 14 can be a hydraulic cylinder, the piston rod of the hydraulic cylinder being connected to the first mounting seat 15, and the cylinder seat of the hydraulic cylinder being connected to the first crossbeam 12.

[0059] For example, the second supporting longitudinal beam 23 and the second mounting base 25 may be connected by a fixed connection such as welding, or a detachable connection such as threaded connection or clamping, without limitation. The second lifting device 24 may be a hydraulic cylinder, the piston rod of the hydraulic cylinder being connected to the second mounting base 25, and the cylinder base of the hydraulic cylinder being connected to the second crossbeam 22.

[0060] In this way, the first supporting longitudinal beam 13 is connected to the first cross beam 12 through the first mounting seat 15, one end of the first lifting device 14 is connected to the first mounting seat 15, and the other end of the first lifting device 14 is connected to the first cross beam 12. The first lifting device 14 drives the first supporting longitudinal beam 13 to adjust the support height up and down through the first mounting seat 15, and the support stability is better; and / or, the second supporting longitudinal beam 23 is connected to the second cross beam 22 through the second mounting seat 25, one end of the second lifting device 24 is connected to the second mounting seat 25, and the other end of the second lifting device 24 is connected to the second cross beam 22. The second lifting device 24 drives the second supporting longitudinal beam 23 to adjust the support height up and down through the second mounting seat 25, and the support stability is better.

[0061] like Figures 1 to 5 As shown, optionally, the main support mechanism 1 further includes a first swing arm 16 and a first rotating member 17. The two first swing arms 16 are rotatably connected to the two ends of the first supporting longitudinal beam 13 respectively, and the first rotating member 17 is used to drive the first swing arms 16 to rotate;

[0062] And / or, the auxiliary supporting mechanism 2 further includes a second swing arm 26 and a second rotating member 27 , the two second swing arms 26 are rotatably connected to the two ends of the second supporting longitudinal beam 23 respectively, and the second rotating member 27 is used to drive the second swing arms 26 to rotate.

[0063] Exemplarily, the two first swing arms 16 are rotatably connected to the first supporting longitudinal beam 13 at both ends of the Y-axis, and the first rotating member 17 can be a hydraulic cylinder, one end of the hydraulic cylinder is rotatably connected to the first swing arm 16, and the other end of the hydraulic cylinder is rotatably connected to the first mounting seat 15. The first swing arm 16 is driven to rotate by the extension and contraction of the hydraulic cylinder. Preferably, the rotation angle of the first swing arm 16 relative to the support surface is ±5°. It should be noted that the first rotating member 17 can be other components that drive the first swing arm 16 to rotate, and there is no limitation here.

[0064] Exemplarily, the two second swing arms 26 are respectively rotatably connected to the second supporting longitudinal beam 23 at both ends of the Y-axis. The second rotating member 27 can be a hydraulic cylinder. One end of the hydraulic cylinder is rotatably connected to the second swing arm 26, and the other end of the hydraulic cylinder is rotatably connected to the second mounting seat 25. The second swing arm 26 is driven to rotate by the extension and contraction of the hydraulic cylinder. Preferably, the rotation angle of the second swing arm 26 relative to the support surface is ±5°. It should be noted that the second rotating member 27 can be other components that drive the second swing arm 26 to rotate, and there is no limitation here.

[0065] It should be noted that the circulation guard plate 3 is disposed around the first swing arm 16 , the first supporting longitudinal beam 13 , the second swing arm 26 and the second supporting longitudinal beam 23 .

[0066] In this way, the two first swing arms 16 are respectively connected to the two ends of the first supporting longitudinal beam 13, and the first rotating member 17 drives the first swing arm 16 to rotate, which can adapt to the ups and downs of the front and rear tunnel roofs of the first supporting longitudinal beam 13 and improve the supporting capacity of the main support mechanism 1; and / or, the two second swing arms 26 are respectively connected to the two ends of the second supporting longitudinal beam 23, and the second rotating member 27 is used to drive the second swing arm 26 to rotate, which can adapt to the ups and downs of the front and rear tunnel roofs of the second supporting longitudinal beam 23 and improve the supporting capacity of the secondary support mechanism 2.

[0067] like Figures 1 to 4 As shown, optionally, the main support mechanism 1 further includes a telescopic swing arm 18 and a third rotating member 19. The telescopic swing arm 18 is rotatably connected to one end of the first supporting longitudinal beam 13 facing the excavation direction, and the third rotating member 19 is used to drive the telescopic swing arm 18 to rotate.

[0068] For example, the telescopic swing arm 18 can be a retractable sleeve structure, which contains a cylinder for driving the sleeve to extend and retract. The third rotating member 19 can be a hydraulic cylinder, one end of which is rotatably connected to the telescopic swing arm 18, and the other end of which is rotatably connected to the first mounting base 15. The extension and retraction of the hydraulic cylinder drives the rotation of the telescopic swing arm 18. It should be noted that the circulating guard plate 3 is arranged around the telescopic swing arm 18, the first swing arm 16, the first supporting longitudinal beam 13, the second swing arm 26, and the second supporting longitudinal beam 23.

[0069] It should be noted that the telescopic swing arm 18 is provided with a second roller 9 at one end in the positive direction of the Y-axis. In this way, during the forward movement of the main support mechanism 1 relative to the auxiliary support mechanism 2, the friction between the telescopic swing arm 18 and the circulation guard plate 3 can be reduced, so that the circulation guard plate 3 can be rotated to change the force-bearing position, thereby improving the service life of the circulation guard plate 3 to a certain extent.

[0070] In this way, the telescopic swing arm 18 is rotatably connected to the end of the first supporting longitudinal beam 13 facing the excavation direction, and the third rotating member 19 drives the telescopic swing arm 18 to rotate. On the one hand, the telescopic swing arm 18 can be extended in time to support the newly exposed tunnel roof, thereby reducing the exposure time of the tunnel roof. On the other hand, by driving the telescopic swing arm 18 to rotate through the third rotating space, it can adapt to the ups and downs of the tunnel roof, and the support effect is better. In addition, the telescopic swing arm 18 has both telescopic and swinging functions, which has a better support effect, a simple structure, and strong practicality.

[0071] like Figures 1 to 5 As shown, optionally, in the excavation direction, a plurality of first rollers 7 are respectively arranged at intervals on the first supporting longitudinal beam 13 , the second supporting longitudinal beam 23 , the first swing arm 16 and the second swing arm 26 .

[0072] Exemplarily, taking the first supporting longitudinal beam 13 as an example, a plurality of first rollers 7 are arranged at intervals on the top of the first supporting longitudinal beam 13 in the Y-axis direction and are in contact with the circulation guard plate 3 .

[0073] In this way, in the excavation direction, multiple first rollers 7 are respectively arranged at intervals on the first supporting longitudinal beam 13, the second supporting longitudinal beam 23, the first swing arm 16 and the second swing arm 26. During the relative displacement of the main support mechanism 1 and the auxiliary support mechanism 2, the circulating guard plate 3 can be circulated by the first rollers 7 to avoid long-term support of part of the support surface of the circulating guard plate 3, causing damage to the circulating guard plate 3, and improving the service life of the circulating guard plate 3.

[0074] like Figure 1 and Figure 6As shown, optionally, the main support mechanism 1 also includes a first side support assembly 5, the first side support assembly 5 includes a first mounting frame 51, a first side support beam 52 and a first telescopic member 53. In the first direction, the first mounting frame 51 is slidingly connected to the first mounting longitudinal beam 111, and the first telescopic member 53 is used to drive the first mounting frame 51 to move in the first direction. In the second direction, the first side support beam 52 is spaced apart on the first mounting frame 51, and the second direction, the first direction and the excavation direction are arranged perpendicular to each other.

[0075] Exemplarily, in the X-axis direction, a first strip slider 54 is provided on the first mounting frame 51, and a first slide groove 113 matching the first strip slider 54 is provided on the first mounting longitudinal beam 111. One end of the first telescopic member 53 is connected to the first lifting bracket 11, and the other end of the first telescopic member 53 is connected to the first mounting frame 51. The first telescopic member 53 can be a telescopic cylinder. In the second direction (Z-axis direction), a plurality of first side support beams 52 are arranged at intervals on the first mounting frame 51, and the connection method of the first side support beam 52 and the first mounting frame 51 can be a detachable connection method.

[0076] In this way, in the first direction, the first mounting frame 51 is slidingly connected to the first mounting longitudinal beam 111, and in the second direction, the first side support beam 52 is spaced apart on the first mounting frame 51, and the first telescopic member 53 drives the first mounting frame 51 to move in the first direction, thereby realizing support for the side wall of the tunnel and adapting to the requirements of changes in the mining direction of the working face.

[0077] like Figure 1 and Figure 7 As shown, optionally, the auxiliary support mechanism 2 also includes a second side support assembly 6, the second side support assembly 6 includes a second mounting frame 61, a second side support beam 62 and a second telescopic member 63, in the first direction, the second mounting frame 61 is slidingly connected to the second mounting longitudinal beam 211, the second telescopic member 63 is used to drive the telescopic second mounting frame 61 to move in the first direction, and in the second direction, a plurality of second side support beams 62 are spaced apart on the second mounting frame 61 and staggered with the first side support beam 52.

[0078] Exemplarily, in the X-axis direction, a second strip slider 64 is provided on the second mounting frame 61, and a second slide groove 214 matching the second strip slider 64 is provided on the second mounting longitudinal beam 211. One end of the second telescopic member 63 is connected to the second lifting bracket 21, and the other end of the second telescopic member 63 is connected to the second mounting frame 61. The second telescopic member 63 can be a telescopic cylinder. In the second direction (Z-axis direction), multiple second side support beams 62 are arranged at intervals on the second mounting frame 61, and the second side support beams 62 and the second mounting frame 61 can be connected in a detachable manner.

[0079] In this way, in the first direction, the second mounting frame 61 is slidingly connected to the second mounting longitudinal beam 211, and in the second direction, multiple second side support beams 62 are arranged at intervals on the second mounting frame 61, and the second telescopic member 63 drives the telescopic second mounting frame 61 to move in the first direction, thereby realizing support for the side wall of the tunnel, and can adapt to the requirements of changes in the mining direction of the working face. At the same time, the second side support beam 62 and the first side support beam 52 are staggered, so that when the main support mechanism 1 and the auxiliary support mechanism 2 are relatively displaced forward and backward, there is no interference between the first side support beam 52 and the second side support beam 62.

[0080] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A mining advanced support system, characterized in that: include: A main support mechanism (1), the main support mechanism (1) is used to support a tunnel roof; the main support mechanism (1) comprises a first lifting bracket (11), a first crossbeam (12) and a first supporting longitudinal beam (13); in a first direction, two of the first lifting brackets (11) are spaced apart and connected via the first crossbeam (12); in a tunneling direction, two of the first crossbeams (12) are spaced apart on the first lifting bracket (11); in the first direction, a plurality of the first supporting longitudinal beams (13) are spaced apart on the first crossbeam (12); the first lifting bracket (11) is used to drive the first supporting longitudinal beam (13) to move up and down via the first crossbeam (12); the first direction is perpendicular to the tunneling direction; A secondary support mechanism (2), the secondary support mechanism (2) is used to support the tunnel roof, in the excavation direction, the secondary support mechanism (2) is used to be movably mounted on the main support mechanism (1), and the support surface of the secondary support mechanism (2) at least partially overlaps with the support surface of the main support mechanism (1); the secondary support mechanism (2) includes a second lifting bracket (21), a second crossbeam (22) and a second supporting longitudinal beam (23), in the first direction, two second lifting brackets (21) are spaced apart and connected by the second crossbeam (22), in the excavation direction Two second crossbeams (22) are spaced apart on the second lifting bracket (21), wherein one second crossbeam (22) is located between the two first crossbeams (12) and is used to move between the two first crossbeams (12); in the first direction, a plurality of second supporting longitudinal beams (23) are spaced apart on the second crossbeam (22), and the second supporting longitudinal beams (23) and the first supporting longitudinal beams (13) are staggered; the second lifting bracket (21) is used to drive the second supporting longitudinal beams (23) to move up and down through the second crossbeams (22); A push cylinder (8), one end of the push cylinder (8) is connected to the main support mechanism (1), and the other end of the push cylinder (8) is connected to the auxiliary support mechanism (2), and the push cylinder (8) is used to drive the auxiliary support mechanism (2) and the main support mechanism (1) to move relative to each other in the excavation direction; The mining advance support system further comprises a circulating guard plate (3), wherein the circulating guard plate (3) is arranged around the first supporting longitudinal beam (13) and the second supporting longitudinal beam (23).

2. The mining advance support system according to claim 1, characterized in that: It also includes a running mechanism (4), which is connected to the main support mechanism (1) and is used to drive the main support mechanism (1) to run.

3. The mining advance support system according to claim 2, characterized in that: The first lifting bracket (11) includes a first lifting component (112) and a first mounting longitudinal beam (111), the first lifting component (112) is installed between the first mounting longitudinal beam (111) and the running mechanism (4), and is used to drive the first mounting longitudinal beam (111) to rise and fall, the first crossbeams (12) are respectively provided at both ends of the first mounting longitudinal beam (111), and the second crossbeam (22) located between the two first crossbeams (12) is used to move on the first mounting longitudinal beam (111) between the two first crossbeams (12); The second lifting bracket (21) comprises a second lifting component (212), a second mounting longitudinal beam (211) and a base (213), wherein two ends of the second lifting component (212) are respectively connected to the second mounting longitudinal beam (211) and the base (213), and two ends of the second mounting longitudinal beam (211) are respectively provided with the second cross beam (22), and the second lifting component (212) is used to drive the second mounting longitudinal beam (211) and the base (213) to rise and fall.

4. The mining advance support system according to claim 3, characterized in that: The main support mechanism (1) further comprises a first lifting device (14) and a first mounting seat (15), wherein the first supporting longitudinal beam (13) is connected to the first crossbeam (12) via the first mounting seat (15), one end of the first lifting device (14) is connected to the first mounting seat (15), and the other end of the first lifting device (14) is connected to the first crossbeam (12); And / or, the secondary support mechanism (2) further comprises a second lifting device (24) and a second mounting seat (25), the second supporting longitudinal beam (23) is connected to the second cross beam (22) via the second mounting seat (25), one end of the second lifting device (24) is connected to the second mounting seat (25), and the other end of the second lifting device (24) is connected to the second cross beam (22).

5. The mining advance support system according to claim 4, characterized in that: The main support mechanism (1) further comprises a first swing arm (16) and a first rotating member (17), wherein the two first swing arms (16) are rotatably connected to two ends of the first supporting longitudinal beam (13), respectively, and the first rotating member (17) is used to drive the first swing arm (16) to rotate; And / or, the secondary support mechanism (2) further comprises a second swing arm (26) and a second rotating member (27), wherein the two second swing arms (26) are respectively rotatably connected to the two ends of the second supporting longitudinal beam (23), and the second rotating member (27) is used to drive the second swing arm (26) to rotate.

6. The mining advance support system according to claim 4, characterized in that: The main support mechanism (1) further comprises a telescopic swing arm (18) and a third rotating member (19), wherein the telescopic swing arm (18) is rotatably connected to one end of the first supporting longitudinal beam (13) facing the excavation direction, and the third rotating member (19) is used to drive the telescopic swing arm (18) to rotate.

7. The mining advance support system according to claim 5, characterized in that: In the excavation direction, a plurality of first rollers (7) are respectively arranged at intervals on the first supporting longitudinal beam (13), the second supporting longitudinal beam (23), the first swing arm (16), and the second swing arm (26).

8. The mining advance support system according to any one of claims 3 to 7, characterized in that: The main support mechanism (1) further includes a first side support assembly (5), the first side support assembly (5) including a first mounting frame (51), a first side support beam (52) and a first telescopic member (53), in the first direction, the first mounting frame (51) is slidably connected to the first mounting longitudinal beam (111), the first telescopic member (53) is used to drive the first mounting frame (51) to move in the first direction, in the second direction, the first side support beam (52) is spaced apart on the first mounting frame (51), and the second direction, the first direction and the excavation direction are arranged perpendicular to each other.

9. The mining advance support system according to claim 8, characterized in that: The secondary support mechanism (2) further includes a second side support assembly (6), the second side support assembly (6) including a second mounting frame (61), a second side support beam (62) and a second telescopic member (63), wherein in the first direction, the second mounting frame (61) is slidably connected to the second mounting longitudinal beam (211), the second telescopic member (63) is used to drive the second mounting frame (61) to move in the first direction, and in the second direction, a plurality of second side support beams (62) are spaced apart on the second mounting frame (61) and staggered with the first side support beam (52).

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