Hydraulic lifting shed for forepoling

Abstract

The invention relates to the field of coal mine equipment, and discloses a hydraulic lifting shed for forepoling, which comprises a lifting shed body, a support beam and an anchor net, and further comprises a support back solid which is arranged on the support beam and comprises a fixed seat, a plurality of mounting holes are formed in the fixed seat, a plurality of support blocks are arranged on the fixed seat, and the anchor net is arranged on the support back solid. A fixing block is arranged on the supporting block, and the fixing block can be matched with the mounting hole to mount the supporting block on the fixing seat. The connecting mechanisms are arranged on the supporting beams, and the connecting mechanisms are used for connecting the adjacent lifting shed bodies together so as to disperse the external force borne by the single lifting shed body. Due to the fact that the supporting back is arranged, after the roadway top plate collapses at one position, the position nearby the collapse position can be disturbed by collapse, collapse can happen to a certain degree, when collapse happens, the supporting back can move upwards, stable supporting is continuously provided for the roadway top plate, and the stability of the lifting shed body can be enhanced to a certain degree.

Description

Technical Field

[0001] The present invention relates to the field of coal mine equipment, and more particularly to a hydraulic lifting shed for advanced support. Background Art

[0002] As coal mining depths continue to expand toward kilometers, tunnel engineering faces multiple challenges, including high ground stresses, strong mining disturbances, and complex geological structures. Traditional passive support methods struggle to cope with the rheological damage and dynamic pressure release of deep surrounding rock. This is especially true in high-risk areas like mines with high-burst formations and fault fracture zones, where the surrounding rock's self-stabilizing capacity plummets, easily leading to disasters such as roof collapse and spalling.

[0003] At present, hydraulic lifting platforms actively apply pressure through hydraulic pillars in advance support, effectively controlling the deformation of surrounding rocks and enhancing support strength. Its dynamic adjustment capability can flexibly adapt to geological changes, forming a coordinated protection system with advance anchors, pipe roofs, etc.; at the same time, by shortening the exposure time of surrounding rocks and sharing the load, the subsequent pressure of advance support is reduced and construction safety is improved. Especially in fault or fracture zone areas, it can quickly respond to sudden changes in ground pressure, forming an "active + passive" dual protection, significantly improving the reliability of advance support under complex geological conditions and the overall efficiency of the project.

[0004] However, in the existing technology, after the lifting platform is installed, a back filler is often required between its top beam and the tunnel roof. The back filler refers to the filling or supporting material behind the support structure, mostly made of wooden wedges, which are used to ensure close contact between the support and the tunnel roof. However, since the tunnel will be affected by external forces such as ground stress, the roof will collapse and the tunnel roof will become hollow. At this time, the back filler can no longer play a role, resulting in reduced support stability and even possible casualties. Summary of the Invention

[0005] The present invention provides a hydraulic lifting shed for advanced support, which solves the technical problems in the above-mentioned background technology.

[0006] The present invention provides a hydraulic lifting shed for advanced support, comprising a lifting shed body, a support beam and an anchor net arranged on the top of the lifting shed body, and further comprising:

[0007] A support back is provided on the support beam, the support back includes a fixing seat, a plurality of mounting holes are provided on the fixing seat, a plurality of support blocks are provided on the fixing seat, and a fixing block is provided on the support block, and the fixing block can cooperate with the mounting holes to mount the support block on the fixing seat;

[0008] A connecting mechanism is provided on the support beam, and is used to connect adjacent lifting shed bodies together to disperse the external force applied to a single lifting shed body;

[0009] A trigger mechanism is arranged on the support beam and is used to squeeze the support back when a roof fall occurs so that the support back can be tightly attached to the tunnel roof.

[0010] Preferably, the connecting mechanism includes a connecting plate, which is arranged between the support beams on adjacent lifting shed bodies, and a sliding groove is provided on the connecting plate, a mounting block is slidably mounted on the sliding groove, and a protective pad is fixedly mounted on the mounting block.

[0011] Preferably, the trigger mechanism includes a mounting seat, a guide wheel is rotatably mounted on the mounting seat, a pull rope is provided on the guide wheel, one end of the pull rope is fixedly connected to the mounting block, and the other end of the pull rope is fixedly mounted with a hook.

[0012] Preferably, the hook is hung on the anchor net.

[0013] Preferably, a top block is provided in the support beam, a moving block is abutted on the top block, a plurality of connecting blocks are fixedly mounted on the moving block, and one end of the connecting block away from the moving block is fixedly connected to the fixing seat.

[0014] Preferably, a circular hole is opened on the side of the support beam, and a circular rod is fixedly installed on the side of the mounting block close to the circular hole, and the circular rod can squeeze the top block through the circular hole.

[0015] Preferably, there are two groups of mounting holes, which are symmetrically arranged on the top of the fixing base.

[0016] Preferably, when the device is in an untriggered state, the protection pad is in a flat state.

[0017] Preferably, the hook passes through the anchor net on the side of the nearest lifting shed body and is hung on the anchor net at the center of the two lifting shed bodies.

[0018] Preferably, when the support back is used when the top plate is broken, a circular column is provided inside the fixed seat, a support block is slidably installed in the circular column, a flexible pad is provided on the support block, an airbag is provided inside the fixed seat below the flexible pad, a connecting tube is provided on the airbag, and the end of the connecting tube away from the airbag is fixedly connected to the circular column.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention sets a support backing. After the tunnel roof collapses at one place, the redistribution of ground stress may cause the rock mass in the adjacent area to become unstable and cause another collapse. When a collapse occurs above the support backing, it will move upward and continue to provide relatively stable support to the tunnel roof, which can enhance the stability of the lifting platform body to a certain extent.

[0021] 2. The present invention sets a trigger mechanism. Since the lifting platform body can support the tunnel roof, the center of the two lifting platform bodies is subjected to the smallest supporting force and is therefore most prone to collapse. When it collapses, it will squeeze the anchor net laid on the tunnel roof, causing it to deform, and then drive the hook to move, thereby starting the trigger mechanism. The initial state of the protective pad is flat. After the trigger mechanism moves, the protective pad will be tightened, which can provide a certain degree of support to the deformed anchor net, reduce the possibility of its direct breakage, and protect the safety of the workers to a certain extent.

[0022] 3. The present invention cooperates with the support back and the trigger mechanism. When the trigger mechanism drives the support back to move upward, the support back can knock on the floating gangue in the cavity. On the one hand, it can prevent the floating gangue from being between the tunnel roof and the lifting shed body, causing unstable support. On the other hand, it can prevent the subsequent floating gangue from falling and injuring people.

[0023] 4. The present invention sets a support backing. When the support backing is used in a tunnel with a broken roof, since the roof is relatively irregular, the support backing with a regular shape is not effective. Therefore, a flexible pad and an air bag are set. When the support block is subjected to external force, it will move, and the gas in the circular column will be squeezed into the air bag, so that the flexible pad is squeezed to fit the shape of the roof. At the same time, the air bag can provide a certain supporting force to the roof, disperse the stress, and reduce the occurrence of gangue leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the present invention in an untriggered state;

[0026] Figure 3 It is a schematic diagram of the present invention after triggering;

[0027] Figure 4 This is a schematic diagram of the connection between the two lifting shed bodies of the present invention;

[0028] Figure 5 is a cross-sectional view of a support beam of the present invention;

[0029] Figure 6 Schematic diagram of the abutment state of the top block and the moving block of the present invention;

[0030] Figure 7 This is a schematic diagram of the protective pad of the present invention supporting the deformed anchor net;

[0031] Figure 8 is a schematic diagram of the connecting mechanism and triggering mechanism of the present invention;

[0032] Figure 9 It is another embodiment of the support back of the present invention.

[0033] In the figure: 1. Lifting shed body; 2. Support beam; 21. Moving block; 22. Connecting block; 23. Top block; 24. Circular hole; 3. Support back; 31. Fixed seat; 32. Support block; 33. Fixed block; 34. Mounting hole; 35. Flexible pad; 36. Circular column; 37. Connecting pipe; 38. Airbag; 4. Connecting mechanism; 41. Connecting plate; 42. Mounting block; 43. Protective pad; 44. Circular rod; 45. Sliding groove; 5. Trigger mechanism; 51. Mounting seat; 52. Pull rope; 53. Hook; 54. Guide wheel; 6. Anchor net. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 9 As shown, an embodiment of the present invention provides a hydraulic scaffolding for advanced support, comprising a scaffolding body 1, a support beam 2 and an anchor net 6 arranged on the top of the scaffolding body 1, and further comprising:

[0036] The support back 3 is provided on the support beam 2. The support back 3 includes a fixing seat 31, a plurality of mounting holes 34 are opened on the fixing seat 31, a plurality of support blocks 32 are provided on the fixing seat 31, and a fixing block 33 is provided on the support block 32. The fixing block 33 can cooperate with the mounting holes 34 to mount the support block 32 on the fixing seat 31;

[0037] A connecting mechanism 4 is provided on the support beam 2 and is used to connect adjacent lifting shed bodies 1 together to disperse the external force exerted on a single lifting shed body 1;

[0038] The trigger mechanism 5 is provided on the support beam 2 and is used for squeezing the support back 3 when a roof fall occurs so that the support back 3 can be closely attached to the tunnel roof.

[0039] The working principle and beneficial effect of the above technical solution are that the support block 32 can be selected into a wedge shape or other shapes according to the shape of the tunnel roof. When the fixed seat 31 moves, it will drive the support block 32 thereon to move, that is, after the tunnel roof collapses, the collapsed area can be supported, thereby improving the stability of the support to a certain extent.

[0040] In one embodiment: the connecting mechanism 4 includes a connecting plate 41, which is arranged between the support beams 2 on adjacent lifting shed bodies 1, and a sliding groove 45 is opened on the connecting plate 41, and a mounting block 42 is slidably installed on the sliding groove 45, and a protective pad 43 is fixedly installed on the mounting block 42.

[0041] The working principle and beneficial effects of the above technical solution are as follows: the connecting plate 41 can connect adjacent lifting shed bodies 1 together to disperse the external force exerted on a single lifting shed body 1; at the same time, the protective pad 43 can reduce the kinetic energy of small gangue falling from the gap of the anchor net 6 to a certain extent, thereby reducing the possibility of injury; at the same time, the connecting plate 41 can reasonably adjust the distance between the two connecting plates 41 according to the specific scenario in which the device is used.

[0042] In one embodiment, the trigger mechanism 5 includes a mounting base 51 on which a guide wheel 54 is rotatably mounted. A pull rope 52 is provided on the guide wheel 54 . One end of the pull rope 52 is fixedly connected to the mounting block 42 , and the other end of the pull rope 52 is fixedly mounted with a hook 53 .

[0043] The working principle and beneficial effects of the above technical solution are as follows: when the anchor net 6 is deformed, it will bend downward, which will drive the hook 53 to move, thereby driving the pull rope 52 to move, and then driving the mounting block 42 to move. The pull rope 52 can be made of materials such as steel wire rope. At the same time, multiple trigger mechanisms 5 can be set according to the situation, so as to more accurately monitor the deformation of the anchor net 6 within the support range of a single lifting shed body 1.

[0044] In one embodiment, the hook 53 is hung on the anchor net 6 .

[0045] The working principle and beneficial effects of the above technical solution are as follows: when the anchor net 6 is deformed, it drives the hook 53 to move.

[0046] In one embodiment, a top block 23 is provided in the support beam 2 , a moving block 21 is abutted on the top block 23 , a plurality of connecting blocks 22 are fixedly mounted on the moving block 21 , and one end of the connecting block 22 away from the moving block 21 is fixedly connected to the fixing seat 31 .

[0047] The working principle and beneficial effects of the above technical solution are as follows: when the top block 23 moves, it squeezes the moving block 21 abutting against it, thereby driving the moving block 21 and the connecting block 22 installed thereon to move, and then driving the fixing seat 31 to move upward.

[0048] In one embodiment, a circular hole 24 is opened on the side of the support beam 2 , and a circular rod 44 is fixedly installed on the side of the mounting block 42 close to the circular hole 24 . The circular rod 44 can squeeze the top block 23 through the circular hole 24 .

[0049] The working principle and beneficial effects of the above technical solution are as follows: when the mounting block 42 moves, the circular rod 44 is driven to move, and the circular rod 44 enters the extrusion top block 23 through the circular hole 24, thereby driving the top block 23 to move.

[0050] In one embodiment, two groups of mounting holes 34 are provided and symmetrically arranged on the top of the fixing base 31 .

[0051] The working principle and beneficial effects of the above technical solution are as follows: since the support block 32 is detachably mounted on the fixing seat 31, the number of installations can be selected according to the requirements of the tunnel roof and replaced as needed. At the same time, the symmetrical arrangement of the mounting holes 34 can make the fixing effect of the support block 32 better.

[0052] In one embodiment, when the device is in an untriggered state, the protection pad 43 is in a flat state.

[0053] The working principle and beneficial effects of the above technical solution are as follows: when the protective pad 43 made of flexible material is impacted by the debris falling from the top plate, it can shake to reduce the impact force, thereby reducing the risk of injury from the falling debris; at the same time, the flexible material can be tightened when the mounting block 42 moves, thereby providing certain support to the deformed anchor net 6 above.

[0054] In one embodiment, the hook 53 passes through the anchor net 6 on the side of the nearest lifting shed body 1 and is hung on the anchor net 6 at the center of the two lifting shed bodies 1.

[0055] The working principle and beneficial effects of the above technical solution are as follows: since the lifting shed body 1 can support the tunnel roof, the support force at the center of the two lifting shed bodies 1 is the smallest, and therefore it is most likely to collapse. When it collapses, it will squeeze the anchor net 6 laid on the tunnel roof, causing it to deform, and then drive the hook 53 to move. Arranging the hook 53 in the above manner can protect the anchor net 6 at the most vulnerable point between the two lifting shed bodies 1 when it is deformed.

[0056] In one embodiment: when the support back 3 is used when the top plate is broken, a circular column 36 is provided inside the fixed seat 31, and a support block 32 is slidably installed inside the circular column 36. A flexible pad 35 is provided on the support block 32, and an airbag 38 is provided inside the fixed seat 31 below the flexible pad 35. A connecting tube 37 is provided on the airbag 38, and the end of the connecting tube 37 away from the airbag 38 is fixedly connected to the circular column 36.

[0057] The working principle and beneficial effects of the above technical solution are as follows: when using the support back 3 in a tunnel with a broken roof, the roof is relatively irregular, and the support back 3 with a regular shape is not effective. Therefore, by setting a flexible pad 35 and an air bag 38, the support block 32 will move when subjected to external force, and the gas in the circular column 36 will be squeezed into the air bag 38. The volume of the circular column 36 can be replaced according to demand to ensure that the gas can drive the flexible pad 35 to deform after entering the air bag 38 and cover the roof above the lifting shed body 1, so that the flexible pad 35 is fitted with the shape of the roof. At the same time, the air bag 38 can provide a certain support force to the roof, disperse stress, and reduce the occurrence of gangue leakage.

[0058] Working principle and usage process: After the device is installed, since the lifting shed body 1 can support the tunnel roof, the center of the two lifting shed bodies 1 is subject to the smallest supporting force and is therefore most prone to collapse. When it collapses, it will squeeze the anchor net 6 laid on the tunnel roof, causing it to deform, and then drive the hook 53 to move, thereby driving the pull rope 52 to move, and then driving the installation block 42 to move. The pull rope 52 can be made of materials such as steel wire rope. At the same time, multiple trigger mechanisms 5 can be set according to the situation, so as to more accurately monitor the deformation of the anchor net 6 within the support range of a single lifting shed body 1. The connecting plate 41 can connect adjacent lifting shed bodies 1 together to disperse the external force on a single lifting shed body 1. At the same time, the protective pad 43 can reduce the external force to a certain extent. The kinetic energy of small gangue falling into the gap of the anchor net 6 can reduce the possibility of injury. At the same time, the flexible material can be tightened when the mounting block 42 moves, so as to provide a certain support to the deformed anchor net 6 above. When the mounting block 42 moves, it will drive the circular rod 44 to move. The circular rod 44 enters the extrusion top block 23 through the circular hole 24, which can drive the top block 23 to move. When the top block 23 moves, it will squeeze the moving block 21 abutting it, thereby driving the moving block 21 and the connecting block 22 installed thereon to move, and then driving the fixed seat 31 to move upward. When the fixed seat 31 moves, it will drive the support block 32 thereon to move, so that after the tunnel roof collapses, the collapsed area can be supported, thereby improving the stability of the support to a certain extent.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic shed for advanced support, comprising a shed body (1), a support beam (2) and an anchor net (6) arranged on the top of the shed body (1), characterized in that: Also includes: A support back (3) is arranged on the support beam (2), the support back (3) comprises a fixing seat (31), a plurality of mounting holes (34) are provided on the fixing seat (31), a plurality of support blocks (32) are provided on the fixing seat (31), a fixing block (33) is provided on the support block (32), and the fixing block (33) can cooperate with the mounting holes (34) to mount the support block (32) on the fixing seat (31); A connecting mechanism (4) is provided on the support beam (2), and is used to connect adjacent shed bodies (1) together to disperse external forces applied to a single shed body (1); A trigger mechanism (5) is arranged on the support beam (2), and is used to squeeze the support back (3) when a roof fall occurs, so that the support back (3) can be closely attached to the tunnel roof.

2. The hydraulic lifting platform for advanced support according to claim 1 is characterized in that: The connecting mechanism (4) includes a connecting plate (41), which is arranged between the support beams (2) on adjacent lifting shed bodies (1). A sliding groove (45) is provided on the connecting plate (41), and a mounting block (42) is slidably mounted on the sliding groove (45). A protective pad (43) is fixedly mounted on the mounting block (42).

3. The hydraulic lifting platform for advanced support according to claim 2 is characterized in that: The trigger mechanism (5) comprises a mounting seat (51), a guide wheel (54) is rotatably mounted on the mounting seat (51), a pull rope (52) is provided on the guide wheel (54), one end of the pull rope (52) is fixedly connected to the mounting block (42), and the other end thereof is fixedly mounted with a hook (53).

4. The hydraulic lifting platform for advanced support according to claim 3 is characterized in that: The hook (53) is hung on the anchor net (6).

5. The hydraulic lifting platform for advanced support according to claim 4 is characterized in that: A top block (23) is provided in the support beam (2), a moving block (21) is abutted on the top block (23), a plurality of connecting blocks (22) are fixedly mounted on the moving block (21), and one end of the connecting block (22) away from the moving block (21) is fixedly connected to a fixing seat (31).

6. The hydraulic lifting platform for advanced support according to claim 5, characterized in that: A circular hole (24) is provided on the side of the support beam (2); a circular rod (44) is fixedly installed on one side of the mounting block (42) close to the circular hole (24); and the circular rod (44) can squeeze the top block (23) through the circular hole (24).

7. The hydraulic lifting platform for advanced support according to claim 6 is characterized in that: The mounting holes (34) are provided in two groups and are symmetrically arranged on the top of the fixing seat (31).

8. The hydraulic lifting platform for advanced support according to claim 7 is characterized in that: When the device is in an untriggered state, the protection pad (43) is in a flat state.

9. The hydraulic lifting platform for advanced support according to claim 8, characterized in that: The hook (53) passes through the anchor net (6) on one side of the nearest shed body (1) and is hung on the anchor net (6) at the center of the two shed bodies (1).

10. The hydraulic lifting platform for advanced support according to claim 1, characterized in that: When the support back (3) is used when the top plate is broken, a circular column (36) is provided inside the fixing seat (31), a support block (32) is slidably installed inside the circular column (36), a flexible pad (35) is provided on the support block (32), an air bag (38) is provided inside the fixing seat (31) below the flexible pad (35), a connecting pipe (37) is provided on the air bag (38), and the end of the connecting pipe (37) away from the air bag (38) is fixedly connected to the circular column (36).

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