Head-on tunneling supporting equipment for fully-mechanized roadway

Abstract

The utility model provides fully-mechanized excavation roadway head-on excavation supporting equipment which comprises excavation anchor equipment and a hydraulic forepoling bar which are mutually independent, the excavation anchor equipment is provided with a cutting part and a bearing part, the cutting part is used for cutting coal in a head-on of a roadway, and the bearing part is used for bearing the hydraulic forepoling bar. The position of the hydraulic forepoling bar in the roadway is adjusted through movement of the digging and anchoring equipment in the roadway; the hydraulic forepoling bar comprises a top beam part, a support leg part, a head-on protection part and a side protection part, the support leg part is telescopically arranged below the top beam part, and the top beam part is separably clung to a top plate of a roadway; the head-on protection part is rotatably arranged at the bottom of the front side of the top beam part and detachably clings to the head-on tunnel face of the roadway; side protection parts are rotatably arranged at the bottoms of the left side and the right side of the top beam part; and the side protection parts are separably clung to the left side wall and the right side wall of the roadway. According to the technical scheme provided by the utility model, the temporary supporting effect of the head-on tunneling supporting equipment for the fully-mechanized roadway can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of temporary support for the heading face of fully-mechanized roadway excavation in coal mines, and particularly relates to a heading excavation support device for a fully-mechanized roadway excavation roadway. Background Art

[0002] The existing heading excavation support device for a fully-mechanized roadway excavation roadway realizes the excavation and temporary support of the roadway heading face through a fully-mechanized roadheader and an airborne hydraulic forepoling beam connected together. However, there are many problems with this excavation and temporary support method:

[0003] 1. Due to the connection between the airborne hydraulic forepoling beam and the roadheader, the load and volume of the cutting part of the roadheader will increase, affecting the coal cutting speed and the visibility of the roadheader driver, and hindering coal cutting;

[0004] 2. Due to the need to consider the load of the roadheader and the influence of the driver's line of sight, the airborne hydraulic forepoling beam must use a folding method, resulting in insufficient strength. Moreover, due to considering the load and the driver's line of sight problems, and the forepoling beam not hanging on the coal wall during coal cutting by the cutting part, the forepoling beam cannot provide full-section and all-round protection, and there are large safety loopholes;

[0005] 3. Both the roadheader and the airborne hydraulic forepoling beam are at the heading face, and the support main beam is on the cutting part, resulting in the inability to perform one-time support for individual intermediate bolts. It is necessary to move the airborne hydraulic forepoling beam, increasing the support time and risk. Moreover, the roof and rib bolt supports are together, interfering with each other, affecting the support speed and safety;

[0006] 4. Due to the inability to provide full-section and all-round protection, when temporarily installing a mesh on the airborne hydraulic forepoling beam, it is easy to have the situation of installing the mesh under the empty roof at the heading face, posing a safety risk;

[0007] 5. Due to the inability to separate the airborne hydraulic forepoling beam from the roadheader, the support process or the support and excavation support devices that can cooperate are relatively single. Content of the Utility Model

[0008] The utility model provides a heading excavation support device for a fully-mechanized roadway excavation roadway to improve the temporary support effect of the heading excavation support device for a fully-mechanized roadway excavation roadway.

[0009] To solve the above problems, the present utility model provides a fully mechanized tunneling roadway heading support device, which includes an independent roadheader-anchor rig and a hydraulic front-probing beam. The roadheader-anchor rig has a cutting part and a receiving part. The cutting part is used for coal cutting in the heading of the roadway, and the receiving part is used for receiving the hydraulic front-probing beam to adjust the position of the hydraulic front-probing beam in the roadway through the movement of the roadheader-anchor rig in the roadway; the hydraulic front-probing beam includes a top beam part, a leg part, a heading protection part and side protection parts. The leg part is telescopically arranged below the top beam part, and the top beam part is detachably close to the roof of the roadway; the heading protection part is rotatably arranged at the front bottom of the top beam part and is detachably close to the heading face of the roadway; side protection parts are rotatably arranged at the bottoms on the left and right sides of the top beam part, and the side protection parts are detachably close to the left and right sidewalls of the roadway.

[0010] Further, the heading protection part includes a plurality of heading protection nets sequentially spaced along the length direction of the top beam part, and any one of the heading protection nets is hinged to the front bottom of the top beam part; the side protection part includes a plurality of side protection nets sequentially spaced along the width direction of the top beam part, and any one of the side protection nets is hinged to the left bottom or the right bottom of the top beam part.

[0011] Further, the heading protection net is composed of a front angle iron frame and a diamond mesh arranged in the front angle iron frame, and the side protection net is composed of a side angle iron frame and a steel mesh arranged in the side angle iron frame. The hydraulic front-probing beam for fully mechanized tunneling roadway heading support further includes a plurality of hinge seats. The front angle iron frame is hinged to the top beam part through at least two hinge seats, and the side angle iron frame is hinged to the top beam part through at least one hinge seat.

[0012] Further, the hydraulic front-probing beam for fully mechanized tunneling roadway heading support further includes a first driving assembly and a second driving assembly arranged below the top beam part. The first driving assembly is drivingly connected to a plurality of heading protection nets, and the second driving assembly is drivingly connected to a plurality of side protection nets.

[0013] Further, the first driving assembly includes a plurality of first telescopic oil cylinders and a plurality of hinge members. The plurality of first telescopic oil cylinders are arranged at intervals along the width direction of the roadway below the top beam part and correspond to the plurality of heading protection nets one by one. One end of the first telescopic oil cylinder is hinged to the top beam part, and the other end of the first telescopic oil cylinder is hinged to the heading protection net through the hinge member.

[0014] Further, the second driving assembly includes a support rod arranged below the top beam part and a plurality of second telescopic oil cylinders arranged at intervals below the support rod. The support rod extends along the length direction of the roadway, the plurality of second telescopic oil cylinders correspond to the plurality of side protection nets one by one, and both ends of the second telescopic oil cylinder are hinged to the support rod and the side protection net respectively.

[0015] Furthermore, the top beam portion includes two side beams and at least three cross beams arranged between the two side beams, the multiple cross beams are parallel to each other and the distance between any two adjacent cross beams is 1.1-1.2m, the extension length of the cross beams in the width direction of the lane is adapted to the width of the lane, or the extension length of the cross beams in the width direction of the lane is adjustable.

[0016] Furthermore, the leg portion is composed of a plurality of telescopic cylinders, and at least three telescopic cylinders are provided on the left bottom portion and the right bottom portion of the top beam portion.

[0017] Furthermore, any telescopic cylinder is hinged to the top beam.

[0018] Furthermore, the head-on excavation support equipment of the comprehensive tunnel has a support state, a coal cutting state, a load-bearing and net-laying state, and a load-bearing and transporting state;

[0019] When the head-end excavation support equipment of the comprehensive excavation roadway is in the supporting state, the excavation and anchoring equipment is spaced apart from the hydraulic front exploration beam, and the outriggers are extended to make the top beam part and the top net on the top beam part close to the top plate of the roadway, and the head-end protection part and the side protection part are close to the head-end face and the left and right side walls of the roadway respectively;

[0020] When the head-end excavation support equipment of the fully-mechanized tunnel is in the coal cutting state, the head-end protection part is separated from the head-end face of the tunnel, and the excavation and anchoring equipment is separated from the hydraulic front exploration beam and the coal is cut;

[0021] When the head-on excavation support equipment of the fully-mechanized tunnel is in the load-bearing and net-laying state, the leg part is retracted so that the top beam falls on the receiving part, the top beam part is separated from the top plate of the tunnel, and the receiving part is connected to the top beam part;

[0022] When the head-on excavation support equipment of the comprehensive tunnel is in the load-bearing and transporting state, the support legs are completely retracted and the side protection parts are separated from the left and right side walls of the tunnel.

[0023] By applying the technical solution of the utility model, a comprehensive tunnel headway excavation support equipment is provided, including mutually independent digging and anchoring equipment and hydraulic front exploration beams, the digging and anchoring equipment comprising a cutting part and a receiving part, the cutting part being used for cutting coal in the head of the tunnel, and the receiving part being used for receiving the hydraulic front exploration beam, so as to adjust the position of the hydraulic front exploration beam in the tunnel by moving the digging and anchoring equipment in the tunnel; the hydraulic front exploration beam comprises a top beam part, a leg part, a headway protection part and a side protection part, the leg part being telescopically arranged below the top beam part, and the top beam part being detachably in close contact with the roof of the tunnel; the headway protection part being rotatably arranged at the front bottom of the top beam part and being detachably in close contact with the headway face of the tunnel; the side protection parts are rotatably arranged at the bottoms on both left and right sides of the top beam part, and the side protection parts are detachably in close contact with the left and right side walls of the tunnel.

[0024] With this solution, the hydraulic front-probing beam is separated from the roadheader-anchoring equipment. Compared with the existing technology where the on-board hydraulic front-probing beam connected to the full-face roadheader is used for temporary support, it is beneficial to reduce the load on the roadheader-anchoring equipment and the impact on the driver's line of sight. Moreover, the temporary support is not affected by the coal cutting of the full-face roadheader, enabling full-section protection, improving the safety performance of the face support. At the same time, the temporary support for the roadway face and the sidewall is realized through the face protection part and the side protection part, achieving all-round temporary protection for the roadway face, further improving the support effect and the safety performance of the face support. Meanwhile, it is beneficial to carry out operations at the well-supported places for temporary mesh installation, eliminating the current situation of installing the mesh under the empty roof at the face with the on-board front-probing beam, reducing the operations under the empty roof, and further increasing the safety performance. On the other hand, since the hydraulic front-probing beam is separated from the roadheader-anchoring equipment, this solution can achieve simultaneous roof and sidewall support, which is beneficial to increasing the support speed. Also, this is conducive to improving the diversity of the face support process (support can be carried out using a bolter, a roadheader-anchoring combined machine, or the full-face roadheader can be retracted and a dedicated drill can be used for support). Further, since there is no need to use the support beam on the cutting part in the middle of the front-probing beam as in the existing on-board hydraulic front-probing beam, the influence of the front-probing beam on the support bolts during support is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0026] Figure 1 The structural schematic diagram of the hydraulic front-probing beam of the full-face roadway heading support equipment provided by the embodiment of the present utility model is shown;

[0027] Figure 2 Shown is Figure 1 partial enlarged view of

[0028] Figure 3 The structural schematic diagram of the receiving part of the roadheader-anchoring equipment of the full-face roadway heading support equipment provided by the embodiment of the present utility model is shown.

[0029] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0030] 10. Hydraulic front-probing beam;

[0031] 11. Roof beam part; 111. Cross beam; 112. Side beam;

[0032] 12. Leg part; 121. Telescopic cylinder;

[0033] 13. Face protection part; 131. Face protection net;

[0034] 14. Side protection part; 141. Side protection net

[0035] 15. Hinge seat

[0036] 16. First drive assembly; 161. First telescopic oil cylinder; 162. Hinge member; 1621. Adapter rod; 1622. First hinge rod; 1623. Second hinge rod

[0037] 17. Second drive assembly; 171. Support rod; 172. Second telescopic oil cylinder

[0038] 21. Receiving part; 211. First rod body; 212. Second rod body Detailed implementation mode

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0040] As Figures 1 to 3 shown, the embodiment of the present invention provides a fully-mechanized heading tunneling support device, including an independent roadheader and a hydraulic forepoling beam 10. The roadheader has a cutting part and a receiving part 21. The cutting part is used for coal cutting in the heading of the roadway, and the receiving part 21 is used for receiving the hydraulic forepoling beam 10 to adjust the position of the hydraulic forepoling beam 10 in the roadway by the movement of the roadheader in the roadway; the hydraulic forepoling beam 10 includes a top beam part 11, a leg part 12, a heading protection part 13 and a side protection part 14. The leg part 12 is telescopically arranged below the top beam part 11, and the top beam part 11 is detachably attached to the roof of the roadway; the heading protection part 13 is rotatably arranged at the front bottom of the top beam part 11 and is detachably attached to the heading face of the roadway; the side protection parts 14 are rotatably arranged at the bottoms of the left and right sides of the top beam part 11, and the side protection parts 14 are detachably attached to the left and right sidewalls of the roadway.

[0041] In this embodiment, the hydraulic front-probing beam 10 is separated from the tunneling and bolting equipment. Compared with the prior art where the on-board hydraulic front-probing beam 10 connected to the full-face tunneling machine is used for temporary support, it is beneficial to reduce the load on the tunneling and bolting equipment and the impact on the driver's line of sight. Moreover, the temporary support is not affected by the coal cutting of the full-face tunneling machine, and full-section protection can be achieved, improving the safety performance of the face support. At the same time, the temporary support for the roadway face and the side wall is realized through the face protection part 13 and the side protection part 14, achieving all-round temporary protection for the roadway face, further improving the support effect and the safety performance of the face support. Meanwhile, it is beneficial to carry out operations at the well-supported place for temporary mesh installation, eliminating the situation of installing the mesh under the empty roof at the face with the on-board front-probing beam, reducing the operation under the empty roof, and further increasing the safety performance. On the other hand, since the hydraulic front-probing beam 10 is separated from the tunneling and bolting equipment, this solution can realize simultaneous support for the roof and side walls, which is beneficial to increasing the support speed. Moreover, this is also beneficial to improving the diversity of the face support process (support can be carried out using a bolter, a roadheader-bolter, or the full-face tunneling machine can be retracted and a special drilling rig can be used for support). Further, since there is no need to use the support beam on the cutting part in the middle of the front-probing beam as in the on-board hydraulic front-probing beam 10 in the prior art, the influence of the front-probing beam on the support bolts during support is reduced.

[0042] As Figure 1 and Figure 2 shown, the face protection part 13 includes a plurality of face protection meshes 131 sequentially spaced along the length direction of the roof beam part 11, and any one of the face protection meshes 131 is hinged to the bottom of the front side of the roof beam part 11; the side protection part 14 includes a plurality of side protection meshes 141 sequentially spaced along the width direction of the roof beam part 11, and any one of the side protection meshes 141 is hinged to the bottom of the left side or the right side of the roof beam part 11.

[0043] In this embodiment, the face protection part 13 realizes close contact with the face through a plurality of face protection meshes 131, avoiding the situation where it is difficult to simultaneously adapt to and closely contact different positions of the face when the face protection part 13 is a single face protection mesh 131, which is beneficial to ensuring the close contact effect of the face protection part 13 with the face; the same applies to the side protection part 14. Such a setting is beneficial to improving the temporary support effect of the face protection part 13 and the side protection part 14 on the face and the left and right side walls, and at the same time facilitates the processing, disassembly, installation, and maintenance of the face protection part 13 and the side protection part 14.

[0044] Specifically, the head protection net 131 is composed of a front angle iron frame and a diamond-shaped net arranged inside the front angle iron frame. The side protection net 141 is composed of a side angle iron frame and a steel bar net arranged inside the side angle iron frame. The hydraulic front-probing beam 10 for the head support of the fully-mechanized heading roadway further includes a plurality of hinge seats 15. The front angle iron frame is hinged to the roof beam part 11 through at least two hinge seats 15, and the side angle iron frame is hinged to the roof beam part 11 through at least one hinge seat 15.

[0045] In this embodiment, the front angle iron frame is made of 40 angle iron, and the length and width dimensions of each head protection net 131 are about 1.5m×1.5m; the side angle iron frame is also made of 40 angle iron, and the length and width dimensions of each side protection net 141 are about 1.0m×1.2m. Among them, the steel bar net is formed by intertwining a plurality of Φ10mm steel bars and has a plurality of rectangular mesh openings, and the size of the mesh openings is 300mm×400mm. Such a setting is beneficial to ensuring the structural strength of the head protection net 131 and the side protection net 141 and the temporary support effect on the roadway. On the other hand, due to the large size of the head protection net 131, its hinge connection with the roof beam part 11 is realized through at least two hinge seats 15 to ensure the reliability and stability of the installation and use of the head protection net 131.

[0046] It should be noted that the diamond-shaped net and the steel bar net are two different metal net products, and they are different in terms of material, production process, hole shape, use, etc. Taking the material as an example, the diamond-shaped net is usually made of low-carbon steel wire, stainless steel wire or aluminum alloy wire, and the steel bar net is mainly welded by steel bars. The material of the steel bar net is usually steel bars, which have relatively high strength and hardness; taking the bearing capacity as an example, diamond-shaped net: due to plate processing, its bearing capacity may be inferior to that of the steel bar net in some applications, while the steel bar net usually has relatively high bearing capacity and stability due to its material and structure.

[0047] As Figure 1 and Figure 2 shown, the hydraulic front-probing beam 10 for the head support of the fully-mechanized heading roadway further includes a first driving assembly 16 and a second driving assembly 17 arranged below the roof beam part 11. The first driving assembly 16 is drivingly connected to a plurality of head protection nets 131, and the second driving assembly 17 is drivingly connected to a plurality of side protection nets 141. Such a setting facilitates the rotation control of a plurality of head protection nets 131 and a plurality of side protection nets 141.

[0048] As Figure 1 shown, the roof beam part 11 includes two side beams 112 and at least three cross beams 111 arranged between the two side beams 112. The plurality of cross beams 111 are parallel to each other, and the distance between any two adjacent cross beams 111 is 1.1 - 1.2m. The extension length of the cross beams 111 in the width direction of the roadway is adapted to the width of the roadway. In this embodiment, there are three cross beams 111, and the cross beam 111 in the middle is the middle beam.

[0049] Preferably, in embodiments not shown in other figures, the extension length of any crossbeam 111 in the width direction of the lane is adjustable, and such a configuration facilitates improving the applicability of the hydraulic front exploration beam 10. Optionally, the crossbeam 111 can be designed as a sleeve-like structure, and the length of the crossbeam 111 in the width direction of the lane is adjusted by adjusting the overlapping area of ​​the two sleeves, and the relative position between the two sleeves is limited by a detachable stopper.

[0050] like Figure 1 and Figure 2 As shown, the first driving assembly 16 includes a plurality of first telescopic cylinders 161 and a plurality of hinges 162. The plurality of first telescopic cylinders 161 are arranged at intervals below the top beam 11 along the width direction of the tunnel and correspond one-to-one to the plurality of head-on protection nets 131. One end of the first telescopic cylinder 161 is hinged to the top beam 11, and the other end of the first telescopic cylinder 161 is hinged to the head-on protection net 131 via the hinge 162.

[0051] In this embodiment, the seat of the first telescopic oil cylinder 161 is hinged to the middle beam through the hinge seat 15, the hinge 162 can be the hinge seat 15, and the rod of the first telescopic oil cylinder 161 is hinged to the head protection net 131 through the hinge 162. In this way, the rotation adjustment of the head protection net 131 can be achieved by adjusting the telescopic adjustment of the rod of the first telescopic oil cylinder 161, which improves the convenience of adjustment.

[0052] Preferably, if Figure 2 As shown, in this embodiment, the hinge 162 is a transfer member composed of three short rods, and the rod body of the first telescopic oil cylinder 161 is hinged to the hinge seat 15 provided on the head-on protection net 131 through the hinge 162. Specifically, the hinge 162 includes a transfer rod 1621, a first hinge rod 1622, and a second hinge rod 1623. One end of the transfer rod 1621 is fixedly connected to the rod body of the first telescopic oil cylinder 161, one end of the first hinge rod 1622 and one end of the second hinge rod 1623 are both hinged to the other end of the transfer rod 1621, the first hinge rod 1622 and the second hinge rod 1623 can rotate symmetrically, the other end of the first hinge rod 1622 is hinged to the crossbeam 111 on the head-on side of the tunnel through the hinge seat 15, and the other end of the second hinge rod 1623 is hinged to the head-on protection net 131 through the hinge seat 15. This arrangement realizes the rotational drive of the head protection net 131 while achieving the rotational support and restriction of the head protection net 131, which is beneficial to ensure the driving effect and continuity of the first driving component 16 on the head protection part 13.

[0053] Further, the second driving component 17 includes a support rod 171 disposed below the top beam portion 11 and a plurality of second telescopic oil cylinders 172 spaced below the support rod 171. The support rod 171 extends along the length direction of the roadway. The plurality of second telescopic oil cylinders 172 correspond to the plurality of side protection nets 141 one by one. Both ends of the second telescopic oil cylinder 172 are hinged to the support rod 171 and the side protection net 141 respectively.

[0054] In this embodiment, the seat body of the second telescopic oil cylinder 172 is hinged to the support rod 171 through a hinge seat 15, and the rod body of the second telescopic oil cylinder 172 is hinged to the side protection net 141 through the hinge seat 15. With such a setting, the rotational adjustment of the side protection net 141 can be achieved by adjusting the telescopic movement of the rod body of the second telescopic oil cylinder 172, improving the convenience of adjustment.

[0055] As Figure 1 shown, the leg portion 12 is composed of a plurality of telescopic cylinders 121. At least three telescopic cylinders 121 are provided at both the left bottom and the right bottom of the top beam portion 11. With such a setting, it is convenient to adjust the distance between the bottom of the leg portion 12 and the top beam portion 11, facilitating the tightening and storage and transportation of the top beam portion 11, etc.

[0056] It can be understood that locking valves can be installed on the first telescopic oil cylinder 161, the second telescopic oil cylinder 172, and the telescopic cylinder 121 to limit the telescopic movement of the rod bodies of the first telescopic oil cylinder 161, the second telescopic oil cylinder 172, and the telescopic cylinder 121.

[0057] Preferably, any one of the telescopic cylinders 121 is hinged to the top beam portion 11. With such a setting, it is convenient to ensure that each telescopic cylinder 121 can be vertically disposed on the bottom of the roadway, avoiding the unstable setting of some telescopic cylinders 121 due to the uneven bottom of the roadway, and ensuring the reliability and stability of the leg portion 12 disposed in the roadway.

[0058] The heading tunneling support equipment in fully-mechanized tunneling roadway has a support state, a coal cutting state, a state of bearing and laying mesh, and a state of bearing and transferring. When the heading tunneling support equipment in fully-mechanized tunneling roadway is in the support state, the roadheader-anchoring equipment is spaced from the hydraulic forepoling beam 10, the support legs 12 extend to press the roof beam part 11 and the roof mesh on the roof beam part 11 tightly against the roof of the roadway, and the heading protection part 13 and the side protection part 14 are respectively in close contact with the heading face and the left and right sidewalls of the roadway. When the heading tunneling support equipment in fully-mechanized tunneling roadway is in the coal cutting state, the heading protection part 13 is separated from the heading face of the roadway, the roadheader-anchoring equipment is spaced from the hydraulic forepoling beam 10 and coal cutting is carried out. When the heading tunneling support equipment in fully-mechanized tunneling roadway is in the state of bearing and laying mesh, the support legs 12 contract so that the roof beam part 11 falls on the receiving part 21, the roof beam part 11 is separated from the roof of the roadway, and the receiving part 21 is connected to the roof beam part 11. When the heading tunneling support equipment in fully-mechanized tunneling roadway is in the state of bearing and transferring, the support legs 12 are fully contracted and the side protection part 14 is separated from the left and right sidewalls of the roadway.

[0059] In summary, the present utility model provides a heading tunneling support equipment in fully-mechanized tunneling roadway. Taking the roadheader-anchoring equipment as an example of a roadheader, a hydraulic anchor drilling machine pump box is fixed on the roadheader. When moving the forepoling beam, a high-pressure rubber hose is used to connect the forepoling beam and the pump box. When it is moved to the predetermined position, the high-pressure rubber hose and the pump box are disengaged, and the pipe head is blocked with an oil plug. The roadheader can walk freely without being affected by the position of the forepoling beam. The receiving part of the roadheader is the original forepoling beam of the roadheader (or the original on-board forepoling beam roof beam is transformed into a simple frame so as not to affect the roof bolt support, and the on-board forepoling beam does not need to be retracted and the machine can be retreated). The working principle of the heading tunneling support equipment in fully-mechanized tunneling roadway is as follows:

[0060] 1. First, supply liquid to the hydraulic forepoling beam 10, and the heading tunneling support equipment in fully-mechanized tunneling roadway is switched to the coal cutting state. The heading protection part 13 is retracted, the support legs 12 and the side protection part 14 remain unchanged, and the roadheader enters the heading to cut coal.

[0061] 2. After coal cutting is completed (the heading empty roof distance is maintained at 400 mm to prevent the roadheader from cutting the hydraulic forepoling beam 10), the cutting part of the roadheader is retracted to the middle position below the roof beam part 11 of the hydraulic forepoling beam 10, the original forepoling beam roof beam of the roadheader is lifted, the lifting cylinder is lifted halfway, and at the same time, liquid is supplied to the hydraulic forepoling beam 10, and the support legs 12 are contracted until the roof beam part 11 of the hydraulic forepoling beam 10 and the heading protection part 13 fall on the original forepoling beam roof beam. After being settled, a simple connection is made (the two forepoling beam roof beams can be fixed together with a simple chain to prevent tilting and falling). The heading tunneling support equipment in fully-mechanized tunneling roadway is switched to the state of bearing and laying mesh.

[0062] 3. At this time, the heading tunneling support equipment in the fully mechanized tunneling roadway is in the state of bearing and laying the net. The metal net used for the roadway roof is laid and fixed on the top beam part 11 of the hydraulic forepole 10. This process can ensure that the operation of laying the top net is carried out under the well-supported roof, avoiding unsupported roof operation.

[0063] 4. After the top net is fixed, all the leg parts 12 are retracted and the legs are pulled out from the floating slag to ensure that the hydraulic forepole 10 is suspended and supported on the original forepole of the fully mechanized tunneling machine. At this time, the heading tunneling support equipment in the fully mechanized tunneling roadway is converted to the state of bearing and transferring.

[0064] 5. After starting the fully mechanized tunneling machine and moving the hydraulic forepole 10 forward by one cycle position, raise the original forepole about 100 mm away from the roof, adjust the top net, and fix the top net and the top net of the previous cycle together. After the net is fixed, supply liquid to the hydraulic forepole 10 to raise the leg parts 12 so that the leg parts 12 top the forepole solidly between the floor floating slag and the roof. Remove the stabilizing chain between the hydraulic forepole 10 and the original forepole of the fully mechanized tunneling machine and retract the original forepole. The fully mechanized tunneling machine is separated from the hydraulic forepole 10 and retreats to a suitable position away from the heading face.

[0065] 6. After the fully mechanized tunneling machine retreats to a suitable position, supply liquid to the hydraulic forepole 10 to push out the heading protection part 13 and press it firmly against the heading coal wall, and at the same time push out the side protection part 14 and press it firmly against the coal rib. At this time, the heading tunneling support equipment in the fully mechanized tunneling roadway is converted to the support state. Then, use the bolter to carry out bolt support for the roof. When supporting the roof bolts, personnel can be arranged to support the rib bolts of the previous cycle.

[0066] 7. After the support is completed, retract the heading protection part 13. The heading tunneling support equipment in the fully mechanized tunneling roadway is converted to the coal cutting state again. The fully mechanized tunneling machine enters the heading face for cutting and enters the next cycle.

[0067] 8. Repeat the above process until the end of the shift. The heading tunneling support equipment in the fully mechanized tunneling roadway remains in the support state, and the heading protection part 13, the side protection part 14 and the top beam part 11 are respectively closely attached to the heading face, the coal rib and the roof of the roadway.

[0068] Preferably, the roadheader-anchor rig can be a roadheader-anchor combined machine. The heading protection part 13 in this embodiment includes three heading protection nets 131 spaced in sequence. When the hydraulic forepole 10 is used in cooperation with the roadheader-anchor combined machine, the on-board forepole can be changed into Figure 3 the U-shaped forepole top beam shown, which includes a first rod body 211 and a second rod body 212. When the hydraulic forepole 10 descends in process 2, adjust the position to respectively top the first rod body 211 and the second rod body 212 of the on-board forepole into the two gaps formed by the three heading protection nets 131 spaced in sequence (the two gaps are respectively Figure 1within the positions shown by U1 and U2 in [the figure]. At process 5, instead of retracting the original front-probing beam and retracting the full-face tunneling and bolting machine, the full-face tunneling and bolting machine and the hydraulic front-probing beam 10 can be maintained in their current positions, the face protection part 13 can be pressed firmly against the face coal wall, and the roof bolts can be supported using the drilling arms of the full-face tunneling and bolting machine. Since the rib bolts are not in the same cycle as the roof bolts, they can be operated simultaneously.

[0069] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0070] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0071] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the outline of each component itself.

[0072] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0073] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meaning, and thus should not be construed as limiting the protection scope of the present utility model.

[0074] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A comprehensive tunnel head-on excavation support device, characterized in that: The invention comprises a mutually independent digging and anchoring device and a hydraulic front exploration beam (10), wherein the digging and anchoring device comprises a cutting part and a receiving part (21), wherein the cutting part is used for cutting coal in the front of the tunnel, and the receiving part (21) is used for receiving the hydraulic front exploration beam (10), so as to adjust the position of the hydraulic front exploration beam (10) in the tunnel by moving the digging and anchoring device in the tunnel; the hydraulic front exploration beam (10) comprises a top beam part (11), a leg part (12), a front protection part (13) and a side protection part (14), the leg portion (12) is telescopically arranged below the top beam portion (11), and the top beam portion (11) is detachably in close contact with the roof of the tunnel; the front protection portion (13) is rotatably arranged at the front bottom of the top beam portion (11) and is detachably in close contact with the front face of the tunnel; the side protection portions (14) are rotatably arranged at the bottom of both left and right sides of the top beam portion (11), and the side protection portions (14) are detachably in close contact with the left and right side walls of the tunnel.

2. The comprehensive tunnel head-on excavation support equipment according to claim 1 is characterized in that: The head protection part (13) comprises a plurality of head protection nets (131) spaced in sequence along the length direction of the top beam part (11), and any one of the head protection nets (131) is hinged to the front bottom of the top beam part (11); the side protection part (14) comprises a plurality of side protection nets (141) spaced in sequence along the width direction of the top beam part (11), and any one of the side protection nets (141) is hinged to the left bottom or the right bottom of the top beam part (11).

3. The comprehensive tunnel head-on excavation support equipment according to claim 2 is characterized in that: The head protection net (131) is composed of a front angle iron frame and a diamond net arranged in the front angle iron frame, and the side protection net (141) is composed of a side angle iron frame and a steel mesh arranged in the side angle iron frame. The hydraulic front exploration beam (10) for head support of the comprehensive tunnel also includes a plurality of hinged seats (15), the front angle iron frame is hinged to the top beam part (11) through at least two of the hinged seats (15), and the side angle iron frame is hinged to the top beam part (11) through at least one of the hinged seats (15).

4. The comprehensive tunnel head-on excavation support equipment according to claim 2 is characterized in that: The hydraulic front exploration beam (10) for head-on support of a comprehensive tunnel excavation further comprises a first drive assembly (16) and a second drive assembly (17) arranged below the top beam portion (11); the first drive assembly (16) is drivingly connected to a plurality of the head-on protection nets (131); and the second drive assembly (17) is drivingly connected to a plurality of the side protection nets (141).

5. The comprehensive tunnel head-on excavation support equipment according to claim 4 is characterized in that: The first driving assembly (16) comprises a plurality of first telescopic cylinders (161) and a plurality of hinges (162). The plurality of first telescopic cylinders (161) are arranged below the top beam (11) at intervals along the width direction of the tunnel and correspond one-to-one to the plurality of head-on protection nets (131). One end of the first telescopic cylinder (161) is hinged to the top beam (11), and the other end of the first telescopic cylinder (161) is hinged to the head-on protection net (131) via the hinge (162).

6. The comprehensive tunnel head-on excavation support equipment according to claim 4 is characterized in that: The second driving assembly (17) comprises a support rod (171) arranged below the top beam (11) and a plurality of second telescopic cylinders (172) arranged at intervals below the support rod (171); the support rod (171) extends along the length direction of the tunnel; the plurality of second telescopic cylinders (172) correspond one-to-one to the plurality of side protection nets (141); and two ends of the second telescopic cylinders (172) are respectively hinged to the support rod (171) and the side protection net (141).

7. The comprehensive tunnel head-on excavation support equipment according to claim 1 is characterized in that: The top beam portion (11) comprises two side beams (112) and at least three cross beams (111) arranged between the two side beams (112); the plurality of cross beams (111) are parallel to each other and the distance between any two adjacent cross beams (111) is 1.1-1.2 m; the extension length of the cross beams (111) in the width direction of the lane is adapted to the width of the lane, or the extension length of the cross beams (111) in the width direction of the lane is adjustable.

8. The comprehensive tunnel head-on excavation support equipment according to claim 1 is characterized in that: The leg portion (12) is composed of a plurality of telescopic cylinders (121), and at least three telescopic cylinders (121) are provided on the left bottom and the right bottom of the top beam portion (11).

9. The comprehensive tunnel head-on excavation support equipment according to claim 8 is characterized in that: Any one of the telescopic cylinders (121) is hinged to the top beam portion (11).

10. The comprehensive tunnel head-on excavation support equipment according to claim 1, characterized in that: The comprehensive tunnel head-on excavation support equipment has a support state, a coal cutting state, a load-bearing and net-laying state, and a load-bearing and transporting state; When the head-end excavation support equipment of the comprehensive excavation roadway is in the support state, the excavation and anchoring equipment is spaced apart from the hydraulic front exploration beam (10), the leg portion (12) is extended to make the top beam portion (11) and the top net on the top beam portion (11) closely attached to the top plate of the roadway, and the head-end protection portion (13) and the side protection portion (14) are closely attached to the head-end face and the left and right side walls of the roadway respectively; When the head-end excavation support equipment of the fully mechanized tunnel is in the coal cutting state, the head-end protection part (13) is separated from the head-end face of the tunnel, and the excavation and anchoring equipment is spaced apart from the hydraulic front exploration beam (10) to perform coal cutting; When the head-on excavation support equipment for the fully mechanized tunnel is in the load-bearing and mesh-laying state, the leg portion (12) contracts so that the top beam portion (11) falls on the receiving portion (21), the top beam portion (11) is separated from the top plate of the tunnel, and the receiving portion (21) is connected to the top beam portion (11); When the head-on excavation support equipment for the fully-mechanized tunnel is in the load-bearing and transporting state, the leg portion (12) is completely retracted, and the side protection portion (14) is separated from the left and right side walls of the tunnel.

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