Turnover supporting mechanism and tunneling support

Abstract

The turnover supporting mechanism is used for supporting side wall surrounding rock or top surrounding rock of a roadway, the turnover supporting mechanism comprises a metal net, a fixing belt, a turnover mechanism and a turnover beam, the fixing belt is fixed to one face of the metal net, the fixing belt is used for supporting the metal net to enable the metal net to be in an unfolded state, and the turnover beam is fixed to the turnover mechanism. The overturning beam is arranged on one face of the metal net, the overturning beam is detachably connected with the metal net and / or the fixing belt, the overturning beam and the fixing belt are arranged in a crossed mode, one end of the overturning beam is rotationally connected with the front end of a side protection beam or the front end of a top beam of the tunneling support, and the overturning mechanism drives the overturning beam to rotate. The overturning beam has a first state of being attached to the inner side face of the tunneling support and a second state of being overturned to support side wall surrounding rock or top surrounding rock at the front end of the tunneling support, and when the overturning beam is in the first state, the metal net is located on the side, facing the inner side of the tunneling support, of the overturning beam; when the overturning beam is in the second state, the metal net is located on the side, facing the outer side of the tunneling support, of the overturning beam.

Description

Technical Field

[0001] The utility model relates to the technical field of roadway supports. More specifically, the utility model relates to a flipping support mechanism and a tunneling support. Background Art

[0002] When underground mining operations are carried out, such as when mining coal, support equipment needs to be set up in the roadway of the mining face and at the end of the working face to support the surrounding rock at the top of the roadway and protect the safety of construction workers.

[0003] As Figures 1-3 shown in the structural schematic diagram of the tunneling support, it has two row-type supports 1 with the same structure. Each row-type support 1 includes at least two roof beams 11 and at least two bearing beams 12. The roof beams 11 and the bearing beams 12 are arranged crosswise, with the roof beams 11 located above the bearing beams 12. A telescopic support assembly 13 is provided below each row-type support 1, and there is a spacing distance between the two row-type supports. The roof beams 11 of the two row-type supports 1 are distributed alternately, and the bearing beams 12 of the two row-type supports 1 are also distributed alternately. A hydraulic propulsion cylinder 14 is arranged between adjacent bearing beams 12. Under the action of the hydraulic propulsion cylinder 14, the two row-type supports can move forward relatively. Therefore, during use, the supporting force on the top surrounding rock is uniform and uninterrupted, which is very safe.

[0004] As Figure 3 shown, if the side wall of the roadway is soft surrounding rock, a side wall protection beam 15 is arranged laterally on the tunneling support, and side wall protection beams 15 are arranged on both sides. The side wall protection beam 15 is fixedly connected to the telescopic support assembly 13. The number of side wall protection beams 15 is set according to needs. The number of side wall protection beams 15 on the same side is one or more. The same side wall protection beam 15 is fixedly connected to the telescopic support assembly 13 below one of the row-type supports 1. When the number of side wall protection beams 15 is multiple, the multiple side wall protection beams 15 are arranged vertically and all are fixedly connected to the telescopic support assembly 13 below one of the row-type supports 1. Although the side wall protection beam 15 does not contact or support the side wall, it can block the rolling stones when the side wall surrounding rock collapses, protecting the safety of the staff.

[0005] However, some side wall surrounding rocks and / or top surrounding rocks of the roadway are broken and unstable. After the tunneling machine advances one step distance, it is necessary to immediately press the just-exposed surrounding rock. Since the surrounding rock cannot self-protect when there is a 1-meter empty space in the side wall, the pressing action needs to be completed within a specific time. Otherwise, the surrounding rock will collapse, causing safety problems. Summary of the Utility Model

[0006] The utility model innovatively provides a flipping support mechanism, which includes a first state and a second state. When the roadheader is tunneling, the flipping support mechanism maintains the first state, without affecting the operation of the equipment and the work of personnel; after the roadheader has just finished tunneling through broken and unstable surrounding rock, the flipping support mechanism can immediately switch to the second state, pressing the fixing belt and the metal mesh on the just-exposed surrounding rock, avoiding the danger caused by the collapse of the surrounding rock, and improving the tunneling speed.

[0007] To achieve the above technical objectives, the first aspect of the utility model discloses a flipping support mechanism for supporting the sidewall surrounding rock or the top surrounding rock of a roadway. The flipping support mechanism includes a metal mesh, a fixing belt, a flipping mechanism, and a flipping beam.

[0008] The fixing belt is fixed on one side of the metal mesh, and the fixing belt is used to support the metal mesh to keep it in an unfolded state.

[0009] The flipping beam is arranged on one side of the metal mesh. The flipping beam is detachably connected to the metal mesh and / or the fixing belt. The flipping beam is arranged crosswise with the fixing belt. One end of the flipping beam is rotatably connected to the front end of the rib protection beam or the front end of the top beam of the tunneling support.

[0010] The flipping mechanism drives the flipping beam to rotate. The flipping beam includes a first state attached to the inner side of the tunneling support and a second state flipped to the front end of the tunneling support to support the sidewall surrounding rock or the top surrounding rock.

[0011] When the flipping beam is in the first state, the metal mesh is on the side of the flipping beam facing the inner side of the tunneling support; when the flipping beam is in the second state, the metal mesh is on the side of the flipping beam facing the outer side of the tunneling support.

[0012] Further, the fixing belt penetrates the length direction or the diagonal direction of the metal mesh.

[0013] Further, the fixing belt is a steel belt.

[0014] Further, the number of the flipping beams is one or more; when there are multiple flipping beams, there is a spacing between the flipping beams, and the number of the flipping mechanisms is less than or equal to the number of the flipping beams.

[0015] Further, when there are multiple flipping beams, the multiple flipping beams are connected by a connecting plate.

[0016] Further, the flipping mechanism is an electric telescopic rod, a hydraulic cylinder or a pneumatic cylinder. The telescopic end of the flipping mechanism is rotatably connected to the flipping beam, and the fixed end of the flipping mechanism is rotatably connected to the top beam or the rib protection beam connected to the flipping beam.

[0017] Further, the fixing belt and / or the metal mesh are bundled and connected or magnetically attracted and connected to the flipping beam.

[0018] To achieve the above technical purpose, a second aspect of the present utility model discloses a tunneling support, including the flipping support mechanism described in the first aspect.

[0019] The beneficial effects of the present utility model are as follows:

[0020] The flipping support mechanism of the present utility model includes a first state and a second state. When the tunneling machine is tunneling, the flipping support mechanism maintains the first state, which does not affect the operation of the equipment and the work of personnel. After the tunneling machine has just finished tunneling through broken and unstable surrounding rock, the flipping support mechanism can immediately switch to the second state, pressing the fixing belt and the metal mesh on the just-exposed surrounding rock, avoiding the danger caused by the collapse of the surrounding rock, and improving the tunneling speed. Description of the Drawings

[0021] Figure 1 is the front view of the existing tunneling support;

[0022] Figure 2 is the bottom view of the existing row support;

[0023] Figure 3 is the side view of some existing tunneling supports;

[0024] Figure 4 is the side view of the flipping support mechanism of the embodiment of the present utility model when it is in the first state for supporting the sidewall surrounding rock;

[0025] Figure 5 is the top view of the flipping support mechanism of the embodiment of the present utility model when it is in the first state for supporting the sidewall surrounding rock;

[0026] Figure 6 is the side view of the flipping support mechanism of the embodiment of the present utility model when it is in the second state for supporting the sidewall surrounding rock;

[0027] Figure 7 is the top view of the flipping support mechanism of the embodiment of the present utility model when it is in the second state for supporting the sidewall surrounding rock;

[0028] Figure 8 is the bottom view of the flipping support mechanism of the embodiment of the present utility model when it is in the first state for supporting the top surrounding rock.

[0029] Figure 9 is the right side view of the flipping support mechanism of the embodiment of the present utility model when it is in the first state for supporting the top surrounding rock.

[0030] Figure 10It is a bottom view of the flipping support mechanism in the second state when it is used to support the surrounding rock at the top in the embodiment of the present utility model.

[0031] Figure 11 It is a right side view of the flipping support mechanism in the second state when it is used to support the surrounding rock at the top in the embodiment of the present utility model.

[0032] In the figure,

[0033] 1. Row-type support; 11. Roof beam; 12. Support beam; 13. Telescopic support assembly; 14. Hydraulic propulsion cylinder; 15. Rib protection beam; 2. Metal mesh; 3. Fixing band; 4. Flipping mechanism; 5. Flipping beam; 6. Connecting plate. Specific implementation mode

[0034] The flipping support mechanism and the tunneling support provided by the present utility model will be explained and described in detail below with reference to the accompanying drawings of the specification.

[0035] This embodiment specifically discloses a flipping support mechanism for supporting the rib surrounding rock or the top surrounding rock of a roadway. As Figures 4-11 shown, the flipping support mechanism includes a metal mesh 2, a fixing band 3, a flipping mechanism 4, and a flipping beam 5. The fixing band 3 is fixed on one side of the metal mesh 2. The fixing band 3 is used to support the metal mesh 2 to keep it in an unfolded state. The metal mesh 2 is a mesh made of multiple metal wires with an uneven surface. However, the strength of the metal mesh 2 is not enough to support it to become a flat and unfolded plane. It is necessary to rely on the fixing band 3 to provide support force to make the metal mesh 2 into an unfolded plane. The shape of the metal mesh 2 is set according to needs, preferably rectangular or square. The length direction of the metal mesh 2 is perpendicular to the advancing direction of the tunneling support, and the width direction of the metal mesh 2 is parallel to the advancing direction of the tunneling support. The specific length and width of the metal mesh 2 are set according to the area of the surrounding rock to be supported. The metal mesh 2 is used to be fixed on the surrounding rock to be supported to form a permanent support. Preferably, the fixing band 3 is a steel band, which has enough support strength to keep the metal mesh 2 in a flat and unfolded state. The fixing band 3 runs through the length direction or the diagonal direction of the metal mesh 2, and can completely unfold and flatten the metal mesh 2.

[0036] The flipping beam 5 is arranged on one side of the wire mesh 2, that is, the flipping beam 5 and the fixing belt 3 can be arranged on the same side of the wire mesh 2 or on different sides of the wire mesh 2. Preferably, the flipping beam 5 and the fixing belt 3 are arranged on the same side of the wire mesh 2. The flipping beam 5 is detachably connected to the wire mesh 2 and / or the fixing belt 3, that is, the flipping beam 5 can be connected only to the wire mesh 2, or only to the fixing belt 3, or both to the wire mesh 2 and the fixing belt 3. Preferably, the flipping beam 5 is connected to both the wire mesh 2 and the fixing belt 3. The fixing belt 3 and / or the wire mesh 2 are connected to the flipping beam 5 by bundling or magnetic attraction, which facilitates the disassembly of the wire mesh 2 and the fixing belt 3 from the flipping beam 5. The flipping beam 5 and the fixing belt 3 are arranged in a cross manner. The flipping beam 5 not only serves to fix the wire mesh 2, but also can support the wire mesh 2 to keep it in an unfolded state. In this embodiment, the flipping beam 5 is arranged along the length direction of the tunneling support, that is, the flipping beam 5 is in the same direction as the top beam 11 or the rib protection beam 15, and the fixing belt 3 is arranged through the length direction of the wire mesh 2. Therefore, the flipping beam 5 is perpendicular to the fixing belt 3.

[0037] One end of the flipping beam 5 is rotatably connected to the front end of the rib protection beam or the top beam of the tunneling support. The flipping beam 5 is rotatably connected to the rib protection beam or the top beam through a hinge. In this embodiment, the forward direction of the tunneling support is taken as the front. The flipping mechanism 4 drives the flipping beam 5 to rotate. The flipping beam 5 includes a first state (as shown in Figure 4 , 5 , 8 and 9) attached to the inner side of the tunneling support and a second state (as shown in Figure 6 , 7 , 10 and 11) flipped to the front support side of the tunneling support to support the rib surrounding rock or the top surrounding rock. When the flipping beam 5 is in the first state, the wire mesh 2 is on the side of the flipping beam 5 facing the inner side of the tunneling support; when the flipping beam 5 is in the second state, the wire mesh 2 is on the side of the flipping beam 5 facing the outer side of the tunneling support. When the flipping beam 5 is in the second state, the wire mesh 2 contacts the top surrounding rock or the rib surrounding rock, and the flipping beam 5 presses the wire mesh 2 against the surrounding rock.

[0038] The flipping mechanism 4 can adopt the tipping bucket mechanism of a front-end loader or the backhoe retracting hook mechanism of a backhoe. In this embodiment, the flipping mechanism 4 is an electric telescopic rod, a hydraulic cylinder or a pneumatic cylinder. The telescopic end of the flipping mechanism 4 is rotatably connected to the flipping beam 5, and the fixed end of the flipping mechanism 4 is rotatably connected to the top beam or the rib protection beam connected to the flipping beam 5. The rotational connection can be achieved through a rotating shaft, and the axial direction of the rotating shaft is perpendicular to the length direction of the flipping mechanism 4. The telescopic end of the flipping mechanism 4 is rotatably connected to the flipping beam 5 through a rotating shaft, and the rotating shaft is fixed on the flipping beam 5, and the telescopic end of the flipping mechanism 4 rotates around the rotating shaft; the fixed end of the flipping mechanism 4 is rotatably connected to the top beam or the rib protection beam through a rotating shaft, and the rotating shaft is fixed on the top beam or the rib protection beam, and the fixed end of the flipping mechanism 4 rotates around the rotating shaft. When the telescopic end of the flipping mechanism 4 is in a contracted state, the flipping beam 5 is in the first state. During the process of the telescopic end of the flipping mechanism 4 gradually extending, the flipping angle of the flipping beam 5 gradually increases until the flipping beam 5 flips to the second state to support the surrounding rock at the top or the side rib. When the flipping beam 5 flips to the maximum angle, the metal mesh 2 can be pressed on the surrounding rock at the top or the side rib.

[0039] When the flipping beam 5 is in the first state, the flipping support mechanism is inside the tunneling support and attached to the inner side surface, without affecting the operation of equipment such as roadheaders and personnel operations, providing sufficient space for large equipment to pass through. When the roadheader has just finished tunneling one side rib or the surrounding rock at the top, through the drive of the flipping mechanism 4, the flipping beam 5 immediately drives the metal mesh 2 to flip to the second state, and it only takes a few seconds for the whole process to safely support the just-exposed broken and unstable surrounding rock.

[0040] The number of flipping beams 5 is one or more. When there is one flipping beam 5, the metal mesh 2 is connected to the flipping beam 5 and is installed on the top beam or the rib protection beam at a suitable position according to the actual position to be supported, and the number of flipping mechanisms 4 is also one. When there are multiple flipping beams 5, there is a spacing between the flipping beams 5, and the number of flipping mechanisms 4 is less than or equal to the number of flipping beams 5; the number of flipping mechanisms 4 can be one, connected to one of the flipping beams 5, or multiple but less than the number of flipping beams 5, corresponding to and connected to several of the flipping beams 5 one by one, or the same as the number of flipping beams 5, corresponding to and connected to the flipping beams 5 one by one, as long as it is ensured that all the flipping beams 5 flip simultaneously to avoid tearing and deforming the metal mesh 2.

[0041] When there are multiple flipping mechanisms 4, in order to ensure the synchronous flipping of the flipping beams 5, all the flipping mechanisms 4 can be uniformly controlled. For example, when the flipping mechanism 4 is an electric telescopic rod, a controller can be used to control the synchronous operation of the flipping mechanisms 4; when the flipping mechanism 4 is a hydraulic cylinder or a pneumatic cylinder, the same hydraulic system or pneumatic system can be used to ensure the synchronous operation of the flipping mechanisms 4.

[0042] When the number of flipping beams 5 is multiple, such as Figure 6 and 10As shown in the figure, multiple tipping beams 5 are connected by a connecting plate 6. All the tipping beams 5 are connected into a whole through the connecting plate 6. No matter how many tipping beams 5 there are, the synchronous tipping of all the tipping beams 5 can be ensured, so as to prevent the metal mesh 2 from being torn and deformed. In order to simplify the structure, all the tipping beams 5 can be synchronously tipped by only one tipping mechanism 4.

[0043] As Figures 4-7 shown in the figure, it is the state diagram of the tipping support mechanism for supporting the side wall surrounding rock. Figures 4-7 It is the schematic diagram of the tipping support mechanism on the right side of the tunneling support. The number of tipping beams 5 is 3, and the 3 tipping beams 5 are connected to the 3 rib protection beams 15 one by one. As Figure 4 and 5 shown in the figure, in the initial state, the tipping beam 5 is in the first state. The metal mesh 2, the tipping beam 5 and the fixing belt 3 are inside the tunneling support. The tipping beam 5 is attached to the inner side surface of the tunneling support. After the tunneling machine has just finished tunneling the right side wall (at this time, the left side wall and the top surrounding rock of the roadway have not been tunneled yet), the telescopic end of the tipping mechanism 4 of the tipping support mechanism for protecting the right side wall extends, driving all the tipping beams 5 of the metal mesh 2 to immediately tip to the second state simultaneously (as Figure 6 and 7 shown in the figure), and within 6 seconds, the fixing belt 3 and the metal mesh 2 are pressed on the unstable surrounding rock of the side wall just exposed after tunneling.

[0044] The left side wall surrounding rock is supported in the same way.

[0045] If there is local broken surrounding rock on the roadway side wall, the tipping protection mechanism of the present application can also be used to support the locally broken and unstable side wall. For example, only support a part of the middle or upper part of the side wall, etc. It is only necessary to adjust the installation height of the tipping support mechanism. If the area of the surrounding rock to be supported is small, the support can also be realized by using one tipping beam 5.

[0046] As Figures 8-11 shown in the figure, it is the state diagram of the tipping support mechanism for supporting the top surrounding rock. The number of tipping beams 5 is 4, and the 4 tipping beams 5 are connected to the 4 top beams 11 one by one. As Figure 8 and 9 [[ID=3)]]shown in the figure, in the initial state, the tipping beam 5 is in the first state. The metal mesh 2, the tipping beam 5 and the fixing belt 3 are inside the tunneling support, that is, below the row-type support 1. The tipping beam 5 is attached to the inner side surface of the tunneling support, that is, the tipping beam 5 is attached to the lower surface of the front top beam 11. After the tunneling machine has just finished tunneling the top surrounding rock, the telescopic end of the tipping mechanism 4 of the tipping support mechanism extends, driving all the tipping beams 5 of the metal mesh 2 to immediately tip to the second state simultaneously (as Figure 10 and 11 shown in the figure), and within 6 seconds, the fixing belt 3 and the metal mesh 2 are pressed on the unstable surrounding rock of the top just exposed after tunneling.

[0047] After the turning beam 5 carrying the wire mesh 2 and the fixing belt 3 is turned to the second state, the wire mesh 2 and the fixing belt 3 are pressed against the surrounding rock. At this time, bolt holes can be drilled and bolts can be installed on the fixing belt 3 and the surrounding rock to fix the wire mesh 2 and the fixing belt 3 on the surrounding rock. Then, the connection between the wire mesh 2 and the fixing belt 3 and the turning beam 5 is disassembled, and the wire mesh 2 and the fixing belt 3 stay on the surrounding rock to form a permanent support, and the surrounding rock will no longer collapse. The turning beam 5 can be installed with the next wire mesh 2 and fixing belt 3 and continue to move forward following the tunneling support.

[0048] In this application, the turning beam 5 is used to carry the pre-fixed fixing belt 3 and wire mesh 2 and turn them to the second state in time, and support the surrounding rock and lay the wire mesh 2 within 6 seconds, so as to complete the first support for the broken and unstable surrounding rock. And the turning beam 5 can persist from the first support until the entire process of permanent support is completed.

[0049] Through the turning action of the turning beam 5 and the driving action of the turning mechanism 4, the turning beam 5 has a supporting force sufficient to press against the side surrounding rock or the top surrounding rock. It not only protects the surrounding rock, but also supports it in a contacting way, that is to say, presses or squeezes the surrounding rock. The turning beam 5 can be switched between the first state and the second state by turning. When the surrounding rock does not need to be supported, the turning beam 5 is in the first state, minimizing the occupation of the effective working space of the roadway to avoid interference with the fuselage or large shovel of the roadheader.

[0050] This utility model application also discloses a tunneling support, including the turning support mechanism of the first aspect. Specifically, it includes two row-type supports 1 with the same structure. Each row-type support 1 includes at least two top beams 11 and at least two support beams 12. The top beams 11 and the support beams 12 are arranged crosswise. Preferably, the top beams 11 and the support beams 12 intersect at a 90° angle. The top beams 11 are arranged along the advancing direction of the tunneling support, and the top beams 11 are located outside or above the support beams 12. A telescopic support assembly 13 is provided below each row-type support 1. The two row-type supports 1 have a spacing distance. The top beams 11 of the two row-type supports 1 are distributed alternately, and the support beams 12 of the two row-type supports 1 are distributed alternately. A hydraulic propulsion cylinder 14 is arranged between adjacent support beams 12. The hydraulic propulsion cylinder 14 is used to push the two row-type supports 1 to move forward relatively, providing an uninterrupted supporting force for the working face.

[0051] Regarding the fixing method of the top beam 11 and the support beam 12, a drop block can be arranged between the top beam 11 and the support beam 12. The top beam 11 is fixedly connected to the support beam 12 through the drop block, and the width of the drop block is smaller than the width of the top beam 11. From Figure 2It can be seen that the two row-type supports 1 are relatively independent of each other and can achieve relative movement. At the same time, the drop block helps to reduce the frictional resistance between the two row-type supports 1 during the relative movement of the row-type supports 1 and between the moving row-type support 1 and the top surface of the working face, facilitating the debugging of the relative movement of the two row-type supports 1.

[0052] The telescopic support assembly 13 is composed of a hydraulic jack, a base at the bottom of the hydraulic jack, a guiding structure outside the hydraulic jack, and a hanging member at the top of the hydraulic jack. While providing strong support, the telescopic support assembly 13 can expand and contract when moving forward, cooperating with the hydraulic propulsion cylinder 14 to facilitate forward movement.

[0053] Support beams 15 are fixed to both sides of the tunneling support.

[0054] The flipping support mechanism is arranged on the side of the broken and unstable surrounding rock that needs to be supported. For example, if the surrounding rock on the left side is broken and unstable, the flipping support mechanism is installed on the left side, and the flipping beam 5 is rotatably connected to the front end of the support beam on the left side; if the surrounding rock on the right side is broken and unstable, the flipping protection mechanism is installed on the right side, and the flipping beam 5 is rotatably connected to the front end of the support beam on the right side; if the surrounding rock at the top is broken and unstable, the flipping protection mechanism is installed at the top, and the flipping beam 5 is rotatably connected to the front end of the top beam.

[0055] The tunneling speed of the working face supported by the tunneling support of the prior art is very slow, and the normal cycle length cannot be achieved during tunneling. For example, the cycle progress should be 1 meter, which is determined by many factors such as the power of the roadheader, the primary tunneling depth, the bolt spacing and row spacing of the permanent support, etc. For the roadway with such broken and unstable surrounding rock, support is required every 0.5 meters, which affects the tunneling speed. However, the tunneling support of the present application effectively overcomes this problem and improves the tunneling speed.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0057] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0058] In the description of this specification, the descriptions referring to terms such as "this embodiment", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any at least one embodiment or example. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0059] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0060] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and simple improvements made to the substantial content of the present utility model shall all be included within the protection scope of the present utility model.

Claims

1. A flipping support mechanism for supporting the side wall surrounding rock or the top surrounding rock of a roadway, characterized in that The flipping support mechanism includes a metal mesh (2), a fixing belt (3), a flipping mechanism (4), and a flipping beam (5). The fixing belt (3) is fixed on one side of the metal mesh (2), and the fixing belt (3) is used to support the metal mesh (2) to keep it in an unfolded state. The flipping beam (5) is arranged on one side of the metal mesh (2). The flipping beam (5) is detachably connected to the metal mesh (2) and / or the fixing belt (3). The flipping beam (5) is arranged crosswise with the fixing belt (3). One end of the flipping beam (5) is rotatably connected to the front end of the rib protection beam or the front end of the roof beam of the tunneling support. The flipping mechanism (4) drives the flipping beam (5) to rotate. The flipping beam (5) includes a first state where it is attached to the inner side of the tunneling support and a second state where it flips to the front support sidewall surrounding rock or the top surrounding rock of the tunneling support. When the flipping beam (5) is in the first state, the metal mesh (2) is on the side of the flipping beam (5) facing the inner side of the tunneling support; when the flipping beam (5) is in the second state, the metal mesh (2) is on the side of the flipping beam (5) facing the outer side of the tunneling support.

2. The turnover support mechanism according to claim 1, characterized in that The fixing belt (3) runs through the length direction or the diagonal direction of the metal mesh (2).

3. The overturning support mechanism according to claim 1 or 2, characterized in that, The fixing belt (3) is a steel belt.

4. The turnover support mechanism according to claim 1, characterized in that The number of the flipping beams (5) is one or more; when there are multiple flipping beams (5), there is a spacing between the flipping beams (5), and the number of the flipping mechanisms (4) is less than or equal to the number of the flipping beams (5).

5. The turnover support mechanism according to claim 4, characterized in that, When the number of the flipping beams (5) is multiple, the multiple flipping beams (5) are connected by a connecting plate (6).

6. The turnover support mechanism according to claim 1, 4 or 5, characterized in that The flipping mechanism (4) is an electric telescopic rod, a hydraulic cylinder, or a pneumatic cylinder. The telescopic end of the flipping mechanism (4) is rotatably connected to the flipping beam (5), and the fixed end of the flipping mechanism (4) is rotatably connected to the roof beam or the rib protection beam connected to the flipping beam (5).

7. The turnover support mechanism according to claim 1, characterized in that The fixing belt (3) and / or the metal mesh (2) is connected to the flipping beam (5) by bundling or magnetic attraction.

8. A tunneling support, characterized in that: It includes the flipping support mechanism according to any one of claims 1 - 7.

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