CN219733400U - Supporting system for supporting roof coal roadway truss - Google Patents
Supporting system for supporting roof coal roadway truss Download PDFInfo
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- CN219733400U CN219733400U CN202321291248.9U CN202321291248U CN219733400U CN 219733400 U CN219733400 U CN 219733400U CN 202321291248 U CN202321291248 U CN 202321291248U CN 219733400 U CN219733400 U CN 219733400U
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- 239000003245 coal Substances 0.000 title claims abstract description 60
- 230000008093 supporting effect Effects 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 70
- 229910000831 Steel Inorganic materials 0.000 claims description 105
- 239000010959 steel Substances 0.000 claims description 105
- 238000009434 installation Methods 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 241001270131 Agaricus moelleri Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a supporting roof coal roadway truss support system, which comprises a vertical anchor rod, a truss mechanism serving as a truss system main body, a connecting mechanism serving as a truss system end connecting structure and a bearing mechanism used for configuring the truss mechanism at the top of a coal roadway, wherein the truss mechanism is positioned at the bottom of the vertical anchor rod and at the top of the coal roadway, the connecting mechanism is positioned at the end of the truss mechanism, and the bearing mechanism is positioned at the upper part of the truss mechanism and in the top stratum of the coal roadway.
Description
Technical Field
The utility model relates to the technical field of roadway roof support, in particular to a supporting roof coal roadway truss support system.
Background
Truss systems are often known in the art as auxiliary support systems, which may strengthen the anchor support system and bear the weight of the broken rock of the roof after deformation and failure of the roof and the deformation load during failure. The main functions are as follows: under the condition of high-stress broken roof, the roadway roof fails due to the influence of mining supporting pressure, an anchor rod and anchor cable supporting system is failed, a truss supporting system is used as a final defense line, and failed broken roof rocks are supported; the coal seam with smaller interlayer spacing is mined in a short distance, and when the anchor cable enters the upper goaf and does not work, the truss replaces shed support; in rock burst mines, when rock burst occurs, the roof may be damaged instantaneously due to the instantaneous failure of the anchor rod (cable) support system. Truss systems are used to support roof strata that fail instantaneously. The mine tunnel uses anchor rods and anchor cables to support surrounding rock of the tunnel in a large amount, in order to improve the supporting effect, the anchor rods or the anchor cables are usually beaten on steel belts, and the common steel belts are W-shaped, M-shaped and trapezoidal steel belts. The steel belts have large roof protection area, but the phenomena of tearing, bending and damage are often caused by large deformation of the tunnel in the deep well weak roof tunnel support because of the thin thickness and poor bending resistance, and the deep mines adopt section steel such as channel steel, I-steel, U-steel and the like as the steel belts for supporting the tunnel roof. The section steel is used as the top beam, the strength and the rigidity are improved, but the section steel is troublesome in installation, centralized support of key positions cannot be realized, in addition, under the complex conditions, particularly for deep high-ground stress large-span roadways, the separation deformation of a roadway roof is particularly serious, the roof cannot be effectively supported only by the anchor rod and the anchor cable used at present, and the phenomenon that the roof is sheared and slipped off along two walls of the roadway side integrally often occurs; in addition, due to the high stress effect, the side part of the coal seam roadway is greatly deformed, and the roadway is often contracted and deformed, so that the roadway cannot be used.
The application number is: 202010499485.9 Chinese patent publication discloses a system and a method for supporting an arch roadway prestressed anchor cable truss and U-shaped steel in a combined manner, wherein the system comprises an arch roadway, a U-shaped steel bracket and an anchor rod cable assembly connected with the U-shaped steel bracket; the anchor rod cable assembly comprises an anchor cable piece positioned on a rock body, an anchor cable connector and a lockset, wherein the anchor cable connector is positioned in the U-shaped steel bracket, and the anchor cable piece is connected with the U-shaped steel bracket; the anchor cable piece comprises a middle anchor cable positioned at the top of the U-shaped steel bracket, a right anchor cable positioned at the right side of the middle anchor cable and a left anchor cable positioned at the left side of the middle anchor cable, wherein the left anchor cable and the right anchor cable are respectively connected with the middle anchor cable through anchor cable connectors, and the middle anchor cable is connected with the top of the U-shaped steel bracket through the lock and is used for injecting cement mortar into an inner cavity of the U-shaped steel. However, the structure of the connector in the arch roadway prestress anchor cable truss and U-shaped steel combined support system is complex, the connector cannot be suitable for supporting a flat-top coal roadway, the connector is of a rigid beam truss structure, I-shaped steel, U-shaped steel or other form of steel belts are used as horizontal pieces, two or more vertical anchor cables form a frame structure, and the structure is difficult to play a role of a truss, namely the connector cannot support failed broken roof rocks.
Disclosure of Invention
The utility model aims to provide a supporting roof coal roadway truss support system.
In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:
the utility model provides a hold in palm top coal roadway truss support system, includes vertical stock, vertical stock anchor is in the top stratum in coal roadway, still including be used for as truss system main part the truss mechanism, be used for as truss system end connection structure's coupling mechanism and be used for disposing the truss mechanism at the loading attachment of coal roadway top, truss mechanism is located the bottom of vertical stock and be located the top in coal roadway, coupling mechanism is located the tip of truss mechanism, loading attachment is located the upper portion of truss mechanism and is located the top stratum in coal roadway.
The truss mechanism comprises a flexible steel belt and horizontal connecting pieces, the flexible steel belt is assembled at the lower end of the vertical anchor rod and is configured at the bottom of the top plate of the coal roadway through the vertical anchor rod, the flexible steel belt is attached to the top plate of the coal roadway, the horizontal connecting pieces are provided with two groups, the two groups of horizontal connecting pieces are embedded in the flexible steel belt side by side at intervals, and the flexible steel belt and the horizontal connecting pieces jointly form a combined truss structure.
The horizontal connecting piece comprises steel strands and anti-impact connectors, the steel strands are embedded in the flexible steel strip, the anti-impact connectors are arranged in two groups, the anti-impact connectors are symmetrically arranged at the inner parts of the two ends of the flexible steel strip and fixedly connected with the flexible steel strip, the two ends of the steel strands are fixedly connected with the two groups of the anti-impact connectors, and the steel strands and the anti-impact connectors jointly form an embedded yielding anti-impact steel strand structure.
The connecting mechanism comprises two groups of mounting seats and connecting bases, wherein the two groups of mounting seats are symmetrically arranged on the upper parts of the two ends of the flexible steel belt and fixedly connected with the flexible steel belt, the two groups of connecting bases correspond to the two groups of mounting seats, the two groups of connecting bases are respectively arranged at the two groups of upper ends of the mounting seats and fixedly connected with the corresponding mounting seats.
Still include the installation hook, the installation hook corresponds two sets of the mount pad is equipped with two sets of, two sets of the installation hook sets up respectively in two sets of the lower part of mount pad and with corresponding mount pad fixed connection, two sets of the installation hook inlays and establishes the both ends of flexible steel band, the mount pad passes through the installation hook with flexible steel band fixed connection, anti-impact connector with corresponding the installation hook connects, the mount pad the connection base reaches the installation hook constitutes truss foot structure jointly.
The bearing mechanism comprises two groups of inclined anchor cables and end head assemblies, the inclined anchor cables are symmetrically arranged on the upper portions of the two groups of connecting base stations and are in rotary connection with the corresponding connecting base stations, the inclined anchor cables are obliquely anchored in a rock stratum at the top of a coal roadway, the end head assemblies correspond to the two groups of inclined anchor cables and are provided with the two groups, the two groups of end head assemblies are respectively arranged on the two groups of inclined anchor cables and are close to one ends of the connecting base stations, and the inclined anchor cables are in rotary connection with the corresponding connecting base stations through the end head assemblies.
The end head assembly comprises an end head screw rod and an end head nut, the end head screw rod is arranged at one end of the inclined anchor cable, which is close to the connecting base, and is in rotary connection with the inclined anchor cable, the end head nut is arranged at one side of the upper part of the connecting base and is in rotary connection with the connecting base through a rotary shaft, and the end head screw rod is in threaded connection with the end head nut.
The inclined anchor cable is a nest anchor cable with a plurality of groups of convex knot structures uniformly arranged on the cable body at intervals.
The vertical anchor rods are provided with a plurality of groups, the vertical anchor rods are arranged at the upper end of the flexible steel belt in parallel at intervals and fixedly connected with the flexible steel belt, and the flexible steel belt is arranged at the top of the coal roadway through the vertical anchor rods and the two inclined anchor cables.
The beneficial effects of the utility model are as follows:
simple structure is equipped with truss structure, its flexible truss structure that adopts flexible steel band and steel strand wires to constitute jointly, bearing capacity and shock resistance are high, and the watch area of bearing is big, and it can carry out suitable steel and mould and keep flexibility in order to adapt to the rugged change of coal roadway roof, is equipped with coupling mechanism, and its truss structure of being convenient for is connected with the installation of bearing mechanism, and convenient assembling is equipped with bearing mechanism, adopts slope nest anchor rope structure, can guarantee the anchorage end of anchor rope outside tunnel coal wall stretch-draw destruction district, for the stability of anchor bolt support system provides assistance in order to strengthen anchor bolt support system.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a cross-sectional view of the truss mechanism of the present utility model mated with a vertical anchor;
FIG. 3 is a schematic view of the truss mechanism and load bearing mechanism of the present utility model.
In the figure: 1. a vertical anchor rod; 2. a flexible steel strip; 3. steel strand; 4. an impact resistant connector; 5. a mounting base; 6. a connecting base; 7. a mounting hook; 8. tilting the anchor cable; 9. an end screw; 10. a head nut.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings,
the utility model discloses a truss support system for a roof supporting coal roadway, which comprises a vertical anchor rod 1, wherein the vertical anchor rod 1 is anchored in a rock stratum at the top of the coal roadway, and further comprises a truss mechanism serving as a truss system main body, a connecting mechanism serving as an end connecting structure of the truss system and a bearing mechanism used for configuring the truss mechanism at the top of the coal roadway, wherein the truss mechanism is positioned at the bottom of the vertical anchor rod 1 and at the top of the coal roadway, the connecting mechanism is positioned at the end of the truss mechanism, and the bearing mechanism is positioned at the upper part of the truss mechanism and in the rock stratum at the top of the coal roadway.
The truss mechanism comprises a flexible steel belt 2 and horizontal connecting pieces, wherein the flexible steel belt 2 is assembled at the lower end of a vertical anchor rod 1 and is configured at the bottom of a top plate of a coal roadway through the vertical anchor rod 1, the flexible steel belt 2 is attached to the top plate of the coal roadway, the horizontal connecting pieces are provided with two groups, the two groups of horizontal connecting pieces are embedded in the flexible steel belt 2 at intervals side by side, the flexible steel belt 2 and the horizontal connecting pieces jointly form a combined truss structure, the truss mechanism is matched with the flexible steel belt 2 and the horizontal connecting pieces to form the combined truss structure through the flexible steel belt 2, the flexible steel belt 2 is used as a main body of the truss structure, the horizontal connecting pieces are used for jointly forming the combined truss structure with the flexible steel belt 2, the requirements of high bearing capacity, high shock resistance and high surface protection bearing area of the truss structure are met, the truss mechanism can be properly steel-molded to keep flexibility so as to adapt to the rugged change of the top plate of the coal roadway, the concrete steel-plastic degree is according to practical conditions, and the matched cross section of the truss mechanism and the vertical anchor rod 1 is shown in fig. 2.
The horizontal connecting piece comprises steel strands 3 and impact connectors 4, the steel strands 3 are embedded in the flexible steel belt 2, the impact connectors 4 are arranged in two groups, the two groups of impact connectors 4 are symmetrically arranged at the inner parts of the two ends of the flexible steel belt 2 and fixedly connected with the flexible steel belt 2, the two ends of the steel strands 3 are fixedly connected with the two groups of impact connectors 4, the steel strands 3 and the impact connectors 4 jointly form an embedded yielding anti-impact steel strand 3 structure, the horizontal connecting piece is matched with the impact connectors 4 through the steel strands 3 and is used as a horizontal connecting structure inside the flexible steel belt 2 to jointly form a combined truss structure with the flexible steel belt 2, the steel strands 3 are used as a flexible main structure of the horizontal connecting piece, the impact connectors 4 are used as a connecting structure of the end parts of the steel strands 3 to be embedded in the flexible steel belt 2 to form an embedded double yielding anti-impact steel strand 3 structure, so that horizontal tension and vertical shearing force are born, and the horizontal connecting piece corresponds to a coal roadway top plate and has a protection surface area and rigidity.
The connecting mechanism comprises mounting seats 5 and connecting bases 6, wherein the mounting seats 5 are provided with two groups, the two groups of mounting seats 5 are symmetrically arranged at the upper parts of two ends of the flexible steel belt 2 and fixedly connected with the flexible steel belt 2, the connecting bases 6 are provided with two groups corresponding to the two groups of mounting seats 5, the two groups of connecting bases 6 are respectively arranged at the upper ends of the two groups of mounting seats 5 and fixedly connected with the corresponding mounting seats 5, the connecting mechanism is matched with the connecting bases 6 through the mounting seats 5 to form a connecting structure of the end part of the truss mechanism, the mounting seats 5 are used as mounting bases of the end part of the truss mechanism, so that mounting support is provided for the connecting bases 6, the connecting bases 6 are used for jointly forming the connecting structure of the end part of the truss mechanism with the mounting seats 5, and the truss mechanism is connected with the truss mechanism.
Still include the installation hook 7, the installation hook 7 corresponds two sets of mount pad 5 and is equipped with two sets of, two sets of installation hooks 7 set up respectively in the lower part of two sets of mount pads 5 and with corresponding mount pad 5 fixed connection, two sets of installation hooks 7 inlay and establish the both ends at flexible steel band 2, mount pad 5 passes through installation hook 7 and flexible steel band 2 fixed connection, impact connector 4 articulates with corresponding installation hook 7, mount pad 5, connecting base 6 and installation hook 7 constitute truss foot structure jointly, wherein, the installation hook 7 is used for being the mounting structure of mount pad 5 bottom in order to be connected mount pad 5 and flexible steel band 2 installation, be connected mount pad 5 and horizontal connection spare through impact connector 4 simultaneously in order to constitute truss foot structure, thereby be connected horizontal connection spare and bear the weight of the mechanism and with resultant force transmission to the roof in coal roadway.
The bearing mechanism comprises two groups of inclined anchor cables 8 and end head assemblies, the inclined anchor cables 8 are symmetrically arranged on the upper portions of the two groups of connecting base 6 and are rotationally connected with the corresponding connecting base 6, the inclined anchor cables 8 are obliquely anchored in a rock stratum at the top of a coal roadway, the end head assemblies correspond to the two groups of inclined anchor cables 8 and are arranged at one ends of the two groups of inclined anchor cables 8, which are close to the connecting base 6, respectively, the inclined anchor cables 8 are rotationally connected with the corresponding connecting base 6 through the end head assemblies, the bearing mechanism is matched with the end head assemblies through the inclined anchor cables 8 to form a bearing structure of the truss support system, the inclined anchor cables 8 are used as anchor cable structures in the truss support system, are still anchored in stable rock strata when a roof of the coal roadway is damaged, and have enough bearing capacity, and the end head assemblies are used as adjustable mounting structures of the inclined anchor cables 8 and connecting ends of the connecting mechanism.
The end assembly comprises an end screw 9 and an end nut 10, wherein the end screw 9 is arranged at one end of the inclined anchor cable 8, which is close to the connecting base 6, and is rotationally connected with the inclined anchor cable 8, the end nut 10 is arranged at one side of the upper part of the connecting base 6 and is rotationally connected with the connecting base 6 through a rotating shaft, the end screw 9 is in threaded connection with the end nut 10, the end assembly is matched with the end screw 9 and the end nut 10 to serve as an adjustable mounting structure of the connecting end of the inclined anchor cable 8, the end screw 9 is used as a mounting structure of the connecting end of the inclined anchor cable 8, the end nut 10 is used as a mounting structure on the connecting base 6 to be matched with the end screw 9 to form an adjusting structure, and the relative rotation between the end screw 9 and the end nut 10 can be used for adjusting the anchoring length of the inclined anchor cable 8 so as to adjust the matching state of the truss mechanism and the coal roadway roof.
The inclined anchor cable 8 is a nest anchor cable with a plurality of groups of convex joint structures uniformly arranged on the cable body at intervals, wherein the inclined anchor cable 8 adopts the nest anchor cable structure, so that the anchor cable structure has the advantages of energy absorption, impact resistance and fracture resistance.
The vertical stock 1 is equipped with a plurality of groups, and a plurality of vertical stock 1 of groups set up in the upper end of flexible steel band 2 and with flexible steel band 2 fixed connection side by side interval, flexible steel band 2 disposes at the top in coal roadway through a plurality of vertical stock 1 of groups and two sets of slope anchor rope 8, and wherein, the anchor point of vertical stock 1 and slope anchor rope 8 is in stable stratum.
The anchoring end of the anchor cable is arranged outside a coal roadway coal wall tensioning damage area, the distance from a truss foot to a coal side is larger than the position of a roof bending curvature change point, the inclination angle of the inclined anchor cable 8 can be determined according to the characteristics of surrounding rocks, the bearing capacity of the inclined anchor cable 8 is designed according to the characteristics of mine pressure, the protection surface area of the horizontal connecting piece is determined according to the conditions of the surrounding rocks of the roof and the pressure characteristics, and the bearing capacity of the horizontal connecting piece is determined according to the pressure characteristics of the roof and the rock burst conditions.
Working principle:
the flexible steel belt 2 and the horizontal connecting piece jointly form a combined flexible truss structure, the bearing capacity and the shock resistance are high, the bearing area of the protection surface is large, the horizontal connecting piece adopts a structure of an inlaid double-yielding anti-impact steel strand 3, horizontal tensile force and vertical shearing force are born, the connecting mechanism jointly forms a truss foot structure through the mounting seat 5, the connecting base 6 and the mounting hook 7, the horizontal connecting piece is connected with the bearing mechanism and transmits resultant force to a top plate of a coal roadway, the bearing mechanism configures the truss structure at the top of the coal roadway through the inclined anchor cable 8 and the vertical anchor rod, the broken top plate rock is supported, the end head assembly is used as a connecting structure of the inclined anchor cable 8 and the connecting base 6, and the installation of the truss support system is facilitated.
The utility model has the beneficial effects that the structure is simple, the truss mechanism is arranged, the flexible truss structure formed by the flexible steel belts and the steel strands is adopted, the bearing capacity and the shock resistance are high, the bearing area of the protection surface is large, the steel plastic can be properly kept flexible to adapt to the rugged change of the roof of the coal roadway, the connecting mechanism is arranged, the installation and the connection of the truss mechanism and the bearing mechanism are convenient, the assembly is convenient, the bearing mechanism is arranged, the inclined nest anchor cable structure is adopted, the anchoring end of the anchor cable can be ensured to be outside the stretching damage area of the coal wall of the roadway, and the stability of the anchor rod support system is assisted to be enhanced.
The foregoing describes one embodiment of the present utility model in detail, but the disclosure is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.
Claims (9)
1. The utility model provides a support top coal roadway truss support system, includes vertical stock (1), vertical stock (1) anchor is in the top stratum in coal roadway, its characterized in that still includes the truss mechanism that is used for as truss system main part, is used for as truss system end connection structure's coupling mechanism and is used for disposing the truss mechanism at the bearing mechanism at the coal roadway top, and truss mechanism is located the bottom of vertical stock (1) and be located the top in coal roadway, coupling mechanism is located the tip of truss mechanism, and bearing mechanism is located the upper portion of truss mechanism and is located the top stratum in coal roadway.
2. The truss support system for the roof coal roadway of claim 1, wherein the truss mechanism comprises flexible steel belts (2) and horizontal connectors, the flexible steel belts (2) are assembled at the lower ends of the vertical anchor rods (1) and are configured at the bottom of a top plate of the coal roadway through the vertical anchor rods (1), the flexible steel belts (2) are attached to the top plate of the coal roadway, the horizontal connectors are provided with two groups, the two groups of horizontal connectors are embedded in the flexible steel belts (2) side by side at intervals, and the flexible steel belts (2) and the horizontal connectors form a combined truss structure together.
3. The supporting roof coal roadway truss support system according to claim 2, wherein the horizontal connecting piece comprises steel strands (3) and impact connectors (4), the steel strands (3) are embedded in the flexible steel belt (2), the impact connectors (4) are arranged in two groups, the impact connectors (4) are symmetrically arranged in two ends of the flexible steel belt (2) and fixedly connected with the flexible steel belt (2), two ends of the steel strands (3) are fixedly connected with the impact connectors (4), and the steel strands (3) and the impact connectors (4) jointly form an embedded yielding impact-resistant steel strand (3) structure.
4. A roof coal roadway truss support system as claimed in claim 3, wherein the connection mechanism comprises two groups of installation seats (5) and a connection base (6), the installation seats (5) are symmetrically arranged at the upper parts of two ends of the flexible steel belt (2) and are fixedly connected with the flexible steel belt (2), the connection base (6) is provided with two groups corresponding to the two groups of installation seats (5), and the two groups of connection base (6) are respectively arranged at the upper ends of the two groups of installation seats (5) and are fixedly connected with the corresponding installation seats (5).
5. The roof coal roadway truss support system according to claim 4, further comprising mounting hooks (7), wherein the mounting hooks (7) are provided with two groups corresponding to the two groups of mounting seats (5), the two groups of mounting hooks (7) are respectively arranged at the lower parts of the two groups of mounting seats (5) and fixedly connected with the corresponding mounting seats (5), the two groups of mounting hooks (7) are embedded at two ends of the flexible steel belt (2), the mounting seats (5) are fixedly connected with the flexible steel belt (2) through the mounting hooks (7), the impact-resistant connector (4) is connected with the corresponding mounting hooks (7) in a hanging mode, and the mounting seats (5), the connecting base (6) and the mounting hooks (7) jointly form a truss foot structure.
6. The supporting roof coal roadway truss support system according to claim 5, wherein the bearing mechanism comprises two groups of inclined anchor cables (8) and end head assemblies, the inclined anchor cables (8) are symmetrically arranged on the upper portions of the two groups of connecting bases (6) and are rotationally connected with the corresponding connecting bases (6), the inclined anchor cables (8) are obliquely anchored in a rock stratum at the top of a coal roadway, the end head assemblies are correspondingly arranged in two groups of inclined anchor cables (8), the two groups of end head assemblies are respectively arranged at one ends, close to the connecting bases (6), of the two groups of inclined anchor cables (8), and the inclined anchor cables (8) are rotationally connected with the corresponding connecting bases (6) through the end head assemblies.
7. The roof coal roadway truss support system of claim 6, wherein the end head assembly comprises an end head screw rod (9) and an end head nut (10), the end head screw rod (9) is arranged at one end of the inclined anchor cable (8) close to the connecting base (6) and is rotationally connected with the inclined anchor cable (8), the end head nut (10) is arranged at one side of the upper portion of the connecting base (6) and is rotationally connected with the connecting base (6) through a rotating shaft, and the end head screw rod (9) is in threaded connection with the end head nut (10).
8. The supporting roof coal roadway truss support system of claim 7, wherein the inclined anchor cables (8) are nest anchor cables with a plurality of groups of convex section structures uniformly spaced on the cable body.
9. The roof coal roadway truss support system according to claim 8, wherein the vertical anchor rods (1) are provided with a plurality of groups, the plurality of groups of vertical anchor rods (1) are arranged at the upper end of the flexible steel belt (2) side by side at intervals and fixedly connected with the flexible steel belt (2), and the flexible steel belt (2) is configured at the top of a coal roadway through the plurality of groups of vertical anchor rods (1) and the two groups of inclined anchor cables (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321291248.9U CN219733400U (en) | 2023-05-25 | 2023-05-25 | Supporting system for supporting roof coal roadway truss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321291248.9U CN219733400U (en) | 2023-05-25 | 2023-05-25 | Supporting system for supporting roof coal roadway truss |
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| Publication Number | Publication Date |
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| CN219733400U true CN219733400U (en) | 2023-09-22 |
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| CN202321291248.9U Active CN219733400U (en) | 2023-05-25 | 2023-05-25 | Supporting system for supporting roof coal roadway truss |
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| Country | Link |
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| CN (1) | CN219733400U (en) |
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2023
- 2023-05-25 CN CN202321291248.9U patent/CN219733400U/en active Active
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