CN107542482B - Soft coal tunneling U-shaped shed mechanical installation roof protection device - Google Patents
Soft coal tunneling U-shaped shed mechanical installation roof protection device Download PDFInfo
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Abstract
The utility model provides a soft coal tunnelling U type canopy mechanized installation roof protection device, solves the supporting means that prior art exists behind, and U type canopy installation inefficiency lacks reliable temporary supporting device's problem. Including a support body, its characterized in that: the main frame of the support frame body comprises a main front cross beam and a main rear cross beam, wherein the upper part of the main front cross beam and the main rear cross beam are provided with a plurality of main parallel beams, and the front end of the main frame is provided with an installation cantilever beam; the auxiliary frame of the support frame body comprises a plurality of upper parts an auxiliary front beam and an auxiliary rear beam of the strip auxiliary compliant beam; a frame moving hydraulic cylinder is arranged between the main frame and the auxiliary frame; the upper part of the front end of the support frame body is provided with an embedded top protection mechanism. The device has reasonable design and compact structure, the embedded type roof protection mechanism can be pressed into the head-on coal wall in advance, the device can support the newly exposed top plate for tunneling the soft coal layer roadway in time, and the mechanical installation of the U-shaped shed is realized; the occupied roadway space is small, the movement is stable, the use is safe and reliable, and the production efficiency of a tunneling working face is obviously improved.
Description
Technical Field
The invention belongs to the technical field of mine engineering equipment, relates to auxiliary operation equipment for soft coal tunneling, and in particular relates to a mechanized installation roof protection device for a soft coal tunneling U-shaped shed, which can timely and effectively support a newly exposed roof of a soft coal tunneling working face, can realize the mechanized installation of the U-shaped shed, has high operation efficiency, occupies small roadway space, moves stably and is safe and reliable to use.
Background
At present, the tunneling and supporting technology of the soft coal mining roadway is generally as follows: after tunneling for 0.6-0.7 m, stopping, and supporting the tunneling roadway by using the U-shaped shed and the anchor net in a completely manual operation mode; and then starting up and tunneling, and performing cyclic operation. The intermittent cyclic operation mode can not bring the advantages of modern equipment such as a fully-mechanized excavating machine, a raking machine and the like in tunneling operation into play, and input and output are not matched. The related data show that more than three quarters of the time is used for manual support operation in the tunneling process of the underground roadway. The traditional process operation flow has low operation efficiency and high labor intensity of operators, and in the operation process of installing the U-shaped shed, the newly exposed roadway top plate is not effectively supported, so that the safety of the operators cannot be ensured, safety accidents are easy to occur, and the safety of a tunneling working face and high-yield and high-efficiency production are influenced. Therefore, the auxiliary operation mode of soft coal roadway tunneling in the prior art needs to be improved.
Disclosure of Invention
Aiming at the problems of the existing soft coal tunnel tunneling auxiliary operation mode that the supporting means is behind, the installation efficiency of the U-shaped shed is low, a reliable temporary supporting device is lacked and the like, the invention provides the soft coal tunnel tunneling U-shaped shed mechanized installation roof protecting device which can timely and effectively support a newly exposed roof of a soft coal tunnel tunneling working face, can realize the mechanized installation of the U-shaped shed, has high operation efficiency, occupies small tunnel space, moves stably and is safe and reliable to use.
The technical scheme adopted by the invention is as follows: the mechanized installation roof protection device for the soft coal tunneling U-shaped shed comprises a support frame body and is characterized in that: the support frame body consists of a main frame and an auxiliary frame, wherein the main frame comprises a main front beam and a main rear beam, and support upright posts are respectively arranged at two ends of the main front beam and the main rear beam; the upper parts of the main front cross beam and the main rear cross beam are provided with a plurality of main parallel beams I, and a main parallel beam II is arranged between two adjacent main parallel beams I; the front end of a main compliant beam II of the main frame is provided with an installation cantilever beam; the auxiliary frame comprises an auxiliary front cross beam and an auxiliary rear cross beam, the two ends of the auxiliary front cross beam and the two ends of the auxiliary rear cross beam are respectively provided with a support upright post, and the upper parts of the auxiliary front cross beam and the auxiliary rear cross beam are provided with a plurality of auxiliary forward cross beams; the auxiliary parallel beams of the auxiliary frame, the main parallel beams I and the main parallel beams II of the main frame are respectively arranged in a staggered way at intervals; a frame moving hydraulic cylinder is arranged between the main front cross beam of the main frame and the auxiliary rear cross beam of the auxiliary frame; the upper part of the front end of the support frame body is provided with an embedded type top protection mechanism.
The mounting cantilever beam arranged at the front end of the main frame of the support frame body comprises an arc-shaped lifting clamping groove which is respectively hinged with the front end of each main forward beam II of the main frame by rotating the swing arm; and a cantilever beam hydraulic cylinder is arranged between the lower part of the rotary swing arm and the lower part of the front end of the main forward beam II. The swing arm is driven to rotate through the expansion of the cantilever beam hydraulic cylinder to drive the arc-shaped lifting clamping groove to swing up and down, so that the mechanical installation of the U-shaped shed and the anchor net is realized, and the operation efficiency is improved.
The embedded type top protection mechanism arranged at the front end of the support frame body consists of an arc-shaped top plate, the rear part of the arc-shaped top plate is in sliding lap joint with the front ends of a main forward beam I, a main forward beam II and an auxiliary forward beam of the support frame body, and the front part of the arc-shaped top plate is pressed into a coal wall of a tunneling head-on through coal wall gear shaping; the front ends of the auxiliary forward beams of the auxiliary frames of the support frame body are respectively provided with a pushing hydraulic cylinder, and the front ends of the pushing hydraulic cylinders are provided with auxiliary pushing blocks; the middle part of the arc-shaped top plate of the embedded type top protection mechanism is provided with a vertical plate which is matched with the pushing hydraulic cylinder and drives the top protection mechanism to move forward. The auxiliary pushing block of the auxiliary forward beam front pushing hydraulic cylinder of the auxiliary frame of the support frame body is utilized to push the vertical plate in the middle of the arc-shaped top plate of the embedded top protection mechanism to drive the whole embedded top protection mechanism to move forwards, so that the exposed soft coal top plate in front of the support frame body is supported.
The embedded type top protection mechanism arranged at the front end of the support frame body is of a split assembly type structure and consists of a middle top protection assembly and side top protection assemblies symmetrically arranged on two sides of the middle top protection assembly; the middle roof protection assembly comprises a middle arc-shaped top plate, and a plurality of coal wall gear shaping teeth which are arranged at equal intervals along the inner cambered surface of the arc-shaped top plate are arranged at the front part of the middle arc-shaped top plate; the middle part of the middle arc-shaped top plate is provided with a middle vertical plate which is transversely arranged; the side roof protection assembly comprises a side arc-shaped top plate, and a plurality of coal wall gear shaping teeth which are arranged at equal intervals along the inner cambered surface of the arc-shaped top plate are arranged at the front part of the side arc-shaped top plate; the middle part of the side arc-shaped top plate is provided with a side vertical plate which is transversely arranged. So as to facilitate the downhole transportation and maintenance of the embedded roof guard mechanism.
The middle top protection component and the side top protection components on two sides of the embedded top protection mechanism are respectively connected in a sliding way through a side sliding mechanism; the side sliding mechanism comprises a sliding groove arranged on the side part of the middle roof protection assembly and a sliding lug arranged on one side of the side roof protection assembly, which is close to the middle roof protection assembly. The middle top protection assembly and the side top protection assemblies at two sides are driven to move forwards step by step, so that the supporting effect of the embedded top protection mechanism on the soft coal top plate in front of the supporting frame body is improved.
The front part of the embedded type roof protection mechanism is provided with a vertically downward arranged protective net. So as to ensure the protection effect on the coal wall at the front end of the tunneling working face.
The protective net is hung on a protective net hanging ring arranged on the inner side of the arc-shaped top plate in the middle of the middle protective top assembly; a protective net hydraulic cylinder is arranged between the protective net frame and the hinged ear plates arranged on the side vertical plates of the side protective top assembly. The protection effect of the protection net on the coal wall at the front end of the tunneling working face is ensured through the support of the protection net hydraulic cylinder.
The rear part of the support frame body is provided with an inclined support hydraulic cylinder; the telescopic end of the diagonal bracing hydraulic cylinder is hinged with the auxiliary rear cross beam of the auxiliary frame, and the fixed end of the diagonal bracing hydraulic cylinder is supported on the roadway bottom plate. So as to improve the use stability of the whole device.
The main compliant beam I and the main compliant beam II of the main frame of the support frame body and the auxiliary compliant beam of the auxiliary frame are respectively in a sectional hinged structure form. So as to facilitate the underground transportation and maintenance of each compliant beam.
The invention has the beneficial effects that: because the front end of the supporting frame body main frame of the soft coal tunneling U-shaped shed mechanized installation roof-protecting device is provided with an installation cantilever beam, operators can fix the U-shaped shed and the anchor net in the arc-shaped lifting clamping groove of the installation cantilever beam in a safety area below the supporting frame body, and the swing arm is driven to drive the arc-shaped lifting clamping groove and the U-shaped shed arranged on the arc-shaped lifting clamping groove to swing up and down by the expansion and contraction of the cantilever beam hydraulic cylinder, so that the mechanized installation of the U-shaped shed and the anchor net is realized, and the operation efficiency and the safety are improved. The staggered structure formed by the main frames and the auxiliary frames of the support frame body can realize continuous stable support of a soft coal tunneling roof by alternately lifting the main frames and the auxiliary frames and pushing and pulling the main frames and the auxiliary frames by utilizing the frame moving hydraulic cylinders to walk in a pushing and pulling manner in the process of forward moving of the device along with soft coal tunneling, so that a group of frames are always in a roof connection state in the alternate moving process of the main frames and the auxiliary frames.
An embedded top protection mechanism arranged at the front end of the support frame body always leads the distance of 1.3-2 meters from the tunneling working face; and the pressure of the coal wall is utilized to be fixedly embedded into the coal bed at the top end of the coal wall. Therefore, in the installation process of the U-shaped shed, the early collapse of the exposed soft coal top plate in front of the support frame body is avoided through the fixing function of the embedded top protection mechanism, and the forming stability of the soft coal roadway top plate is ensured. After the installation of the U-shaped shed is finished, the pushing hydraulic cylinder at the front end of the auxiliary frame of the supporting frame body is utilized to assist the pushing embedded type top protection mechanism to move forwards along with the supporting frame body, so that the real-time top protection of the installation of the whole U-shaped shed is realized.
The mechanized installation roof protection device for the soft coal tunneling U-shaped shed is reasonable in design and compact in structure, can timely and effectively support a newly exposed roof of a soft coal layer tunneling working face, and can realize the mechanized installation of the U-shaped shed; the occupied roadway space is small, the movement is stable, the use is safe and reliable, and the production efficiency of a tunneling working face is obviously improved.
Drawings
Fig. 1 is a schematic view of a structure of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a left side view of fig. 1.
Fig. 4 is a schematic view of the structure of fig. 3 with the embedded roof guard mechanism and the protective mesh removed.
Fig. 5 is a schematic view of a construction of the front portion of the secondary beam of fig. 1.
Fig. 6 is a schematic view of one configuration of the mounting ram of fig. 1.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a schematic view of a construction of the embedded roof guard mechanism of fig. 1.
Fig. 9 is an a-direction view of fig. 8.
Fig. 10 is a schematic view of a split structure of fig. 8.
Fig. 11 is a schematic view of the middle and side guard assemblies of fig. 8 in use with a stepped forward movement.
The serial numbers in the figures illustrate: the device comprises a front auxiliary beam, a front auxiliary beam 2, a front main beam 3, a front main beam 4, a front main beam 5, a front main beam II, a rear auxiliary beam 6, a front main beam 7, an installation cantilever beam 8, a shed 9U, an anchor net 10, an embedded type roof protection mechanism 11, a protection net 12, a protection net hydraulic cylinder 13, a support column 14, a frame moving hydraulic cylinder 15, a diagonal bracing hydraulic cylinder 16, a safe working space 17, a pushing hydraulic cylinder 18, an auxiliary pushing block 19, a beam hinging part 20, a rotation swing arm 21, an arc lifting clamping groove 22, a cantilever beam hydraulic cylinder 23, a middle roof protection assembly 24, a side roof protection assembly 25, a coal wall gear shaping 26, a middle arc top plate 27, a middle vertical plate 28, a side arc top plate 29, a side vertical plate 30, a hinging lug plate 31, a side sliding mechanism 32, a protection net 33, a sliding groove 34 and a sliding lug 35.
Detailed Description
The specific structure of the present invention will be described in detail with reference to fig. 1 to 11. The mechanized installation roof protection device for the soft coal tunneling U-shaped shed comprises a support frame body composed of a main frame and an auxiliary frame, wherein the main frame of the support frame body is composed of a front main beam 3 and a rear main beam 7 which are arranged front and back, and supporting upright posts 14 which are arranged vertically downwards are respectively arranged at two ends of the front main beam 3 and the rear main beam 7. The upper parts of the main front cross beam 3 and the main rear cross beam 7 are provided with a plurality of main forward beams I4 which are arranged along the direction vertical to the main front cross beam 3 and the main rear cross beam 7; a main parallel beam II 5 which is arranged in parallel with the main parallel beam I4 is arranged between two adjacent main parallel beams I4; the main forward beam I4 and the main forward beam II 5 are respectively hinged with the main front beam 3 and the main rear beam 7 through beam hinge parts 20. The front end of a main forward beam II 5 of the main frame is provided with an installation cantilever beam 8 for replacing a U-shaped shed 9 and an anchor net 10 which are manually lifted and installed; the installation cantilever beam 8 is composed of an arc-shaped lifting clamping groove 22, and the bayonet of the arc-shaped lifting clamping groove 22 is controlled by a clamping hydraulic cylinder and can clamp U-shaped steel. The arc-shaped lifting clamping groove 22 is respectively hinged with the front ends of all main parallel beams II 5 of the main frame through a rotary swing arm 21; and, between the lower part of each rotation swing arm 21 and the lower part of the front end of the corresponding main forward beam II 5, a cantilever beam hydraulic cylinder 23 for driving the rotation swing arm 21 to rotate is arranged. The swing arm 21 is driven to drive the arc-shaped lifting clamping groove 22 to swing up and down through the expansion and contraction of the cantilever beam hydraulic cylinder 23, so that the mechanized installation of the U-shaped shed 9 and the anchor net 10 is realized, and the operation efficiency is improved.
The auxiliary frame of the support frame body is composed of an auxiliary front cross beam 1 and an auxiliary rear cross beam 6 which are arranged front and back, and the two ends of the auxiliary front cross beam 1 and the auxiliary rear cross beam 6 are also respectively provided with a vertical downward supporting upright post 14. The upper parts of the auxiliary front cross beam 1 and the auxiliary rear cross beam 6 are provided with a plurality of auxiliary parallel beams 2 which are arranged in parallel with a main parallel beam I4 and a main parallel beam II 5 of the main frame; and the auxiliary beam 2 of the auxiliary frame, the main beam I4 and the main beam II 5 of the main frame are respectively arranged in a staggered way at intervals. The auxiliary forward beam 2 is hinged with the auxiliary front beam 1 and the auxiliary rear beam 6 through beam hinge parts 20 respectively. A pushing hydraulic cylinder 18 for pushing the embedded type top protection mechanism 11 is respectively arranged in the front end of each auxiliary following beam 2 of the auxiliary frame; an auxiliary pushing block 19 for contacting with the vertical plate of the embedded roof guard mechanism 11 is arranged at the front end of the pushing hydraulic cylinder 18. A frame moving hydraulic cylinder 15 for driving the support frame body to move is arranged between the main front cross beam 3 of the main frame and the auxiliary rear cross beam 6 of the auxiliary frame. It can be understood that, in order to facilitate the underground transportation and maintenance of the compliant beams, the main compliant beam I4 and the main compliant beam II 5 of the main frame of the support frame body and the auxiliary compliant beam 2 of the auxiliary frame respectively adopt a sectional hinged structure form. The rear portion of the support frame body is provided with a diagonal bracing hydraulic cylinder 16 for the purpose of improving the stability of the whole device in use. The telescopic end of the diagonal bracing hydraulic cylinder 16 is hinged with the rear part of the auxiliary rear cross beam 6 of the auxiliary frame, and the fixed end of the diagonal bracing hydraulic cylinder 16 is supported on the bottom plate of the roadway.
The upper part of the front end of the support frame body is provided with an embedded type top protection mechanism 11 for supporting the soft coal top plate with the exposed front part. The embedded roof protection mechanism 11 adopts a split assembly type structure and consists of a middle roof protection assembly 24 and side roof protection assemblies 25 symmetrically arranged at two sides of the middle roof protection assembly 24. The middle roof protection assembly 24 comprises a middle arc-shaped top plate 27, and a plurality of coal wall gear shaping teeth 26 which are arranged at equal intervals along the inner cambered surface of the arc-shaped top plate are arranged at the front part of the middle arc-shaped top plate 27; the middle part of the middle arc-shaped top plate 27 is provided with a middle vertical plate 28 which is transversely arranged. The center cap assembly 24 may also be designed as a split assembly structure, depending on the needs of the application. The side roof protection assembly 25 comprises a side arc-shaped top plate 29, and a plurality of coal wall gear shaping teeth 26 which are arranged at equal intervals along the inner cambered surface of the arc-shaped top plate are also arranged at the front part of the side arc-shaped top plate 29; the middle part of the side arc-shaped top plate 29 is provided with side vertical plates 30 which are transversely arranged. The rear part of the embedded roof protection mechanism 11 is in sliding lap joint with the front ends of the main forward beam I4, the main forward beam II 5 and the auxiliary forward beam 2 of the support frame body, and the front part of the embedded roof protection mechanism 11 is pushed by a pushing hydraulic cylinder 18 at the front end of the auxiliary forward beam 2 of the auxiliary frame and is pressed into a coal wall of a tunneling head by utilizing a coal wall gear 26 at the front end; the whole embedded roof protection mechanism 11 is driven to move forwards by pushing the middle vertical plate 28 of the middle roof protection assembly 24 and the side vertical plates 30 of the side roof protection assembly 25 by utilizing the auxiliary pushing blocks 19 of the pushing hydraulic cylinders 18 at the front ends of the auxiliary forward beams 2 of the auxiliary frames of the support frame bodies so as to support the exposed soft coal roof in front of the support frame bodies. And, the split assembly type structure of the embedded type roof protection mechanism 11 is also convenient for underground transportation and maintenance of the mechanism.
According to specific use requirements, the middle roof protection assembly 24 and the side roof protection assemblies 25 of the embedded roof protection mechanism 11 of the split assembly type structure are respectively connected in a sliding manner through the side sliding mechanisms 32. The side sliding mechanism 32 is composed of a sliding groove 34 provided at the side of the middle roof module 24, and a sliding projection 35 provided at the side of the side roof module 25 near the middle roof module 24. The middle roof protection assembly 24 and the side roof protection assemblies 25 on the two sides of the embedded roof protection mechanism 11 are driven to move forward step by step, so that the supporting effect of the embedded roof protection mechanism 11 on the soft coal roof in front of the supporting frame body is improved. In order to ensure the protection effect on the coal wall at the front end of the tunneling working face, the front part of the embedded roof protection mechanism 11 is also provided with a vertically downward arranged protection net 12. The protection net 12 is hung on the protection net hanging ring 33 arranged on the inner side of the arc-shaped top plate 27 in the middle part of the middle protection top assembly 24 through a connecting chain. The protection net hydraulic cylinder 13 is arranged between the middle part of the inner side of the protection net 12 frame and the hinged ear plates 31 arranged on the side vertical plates 30 of the side protection top assembly 25. To firmly support the protection net 12 on the front end coal wall by using the protection net hydraulic cylinder 13.
When the soft coal tunneling U-shaped shed mechanized installation roof protection device is used, firstly, the roof protection device is installed and arranged on a soft coal tunneling working face according to the structural connection mode; the default initial state is that the support upright 14 extends, and the frame moving hydraulic cylinder 15, the cantilever beam hydraulic cylinder 23 and the pushing hydraulic cylinder 18 are all retracted. Then, a heading machine or a raking machine is used to perform a heading operation of the soft coal roadway in a safe working space 17 formed by the main frame and the auxiliary frame of the supporting frame body. Taking a vertical plate of the embedded type top protection mechanism 11 as a reference surface, tunneling forward for 600-700 mm, stopping, placing the U-shaped shed 9 and the top anchor net 10 in an arc-shaped lifting clamping groove 22 for installing the cantilever beam 8, and installing a protection net 12 and a protection net hydraulic cylinder 13 according to specific gangue blocking requirements; then, the cantilever beam hydraulic cylinder 23 is extended, so that the rotary swing arm 21 is driven to drive the arc-shaped lifting clamping groove 22, the U-shaped shed 9 and the top anchor net 10 which are arranged on the arc-shaped lifting clamping groove to swing upwards to a mounting station, and then the supporting legs and the anchor net on two sides of the U-shaped shed are fixed, so that the mechanical mounting of the U-shaped shed 9 and the anchor net 10 is realized under the protection of the embedded roof protection mechanism 11; and the working efficiency is improved.
When the roof protection device needs to move forwards along with the tunneling operation of the soft coal roadway, the protective net 12 and the protective net hydraulic cylinder 13 need to be detached; and then the pushing hydraulic cylinder 18 extending out of the front end of the auxiliary frame auxiliary forward beam 2 pushes the whole embedded type roof protection mechanism 11 to move forward, so as to support the exposed soft coal roof in front of the support frame body. Then, the supporting upright posts 14 at the two ends of the main front cross beam 3 and the main rear cross beam 7 of the main frame of the supporting frame body are lowered (retracted) to enable the main compliant beam I4 and the main compliant beam II 5 of the main frame to be temporarily separated from the roadway top plate; after that, the frame moving hydraulic cylinder 15 is extended to push the main frame of the lowered frame to move forward. After the main frame of the support frame body moves forward in place, the supporting upright posts 14 at the two ends of the main front cross beam 3 and the main rear cross beam 7 of the main frame are lifted (stretched out) again, so that the main compliant beam I4 and the main compliant beam II 5 of the main frame support the roadway roof. Then, the supporting upright posts 14 at the two ends of the auxiliary front beam 1 and the auxiliary rear beam 6 of the auxiliary frame of the supporting frame body are lowered, so that the auxiliary following beam 2 of the auxiliary frame is separated from the roadway roof, and the frame moving hydraulic cylinder 15 is retracted, so that the lowered auxiliary frame is pulled to move forward. After the auxiliary frame of the supporting frame body moves forward in place, the supporting upright post 14 of the auxiliary frame is lifted.
The operation cycle of tunneling and mechanized installation of the U-shaped shed, the anchor net, the forward support frame body and the embedded type top protection mechanism is repeated, a group of frames are always in a top connection state in the moving process of the device through the mode that the main frame and the auxiliary frame alternately lift and forward move, the embedded type top protection mechanism is always supported on the top end of a working area in advance, continuous stable support of a soft coal tunneling roadway top plate is achieved, and the safety of soft coal tunneling working face operation is ensured.
Claims (6)
1. The utility model provides a soft coal tunnelling U type canopy mechanized installation top guard device, includes a support body, its characterized in that: the support frame body consists of a main frame and an auxiliary frame, the main frame comprises a main front cross beam (3) and a main rear cross beam (7), and support upright posts (14) are respectively arranged at two ends of the main front cross beam (3) and the main rear cross beam (7); the upper parts of the main front cross beam (3) and the main rear cross beam (7) are provided with a plurality of main parallel beams I (4), and a main parallel beam II (5) is arranged between two adjacent main parallel beams I (4); the front end of a main compliant beam II (5) of the main frame is provided with an installation cantilever beam (8); the auxiliary frame comprises an auxiliary front cross beam (1) and an auxiliary rear cross beam (6), support columns (14) are respectively arranged at two ends of the auxiliary front cross beam (1) and the auxiliary rear cross beam (6), and a plurality of auxiliary parallel beams (2) are arranged at the upper parts of the auxiliary front cross beam (1) and the auxiliary rear cross beam (6); the auxiliary parallel beams (2) of the auxiliary frame, the main parallel beams I (4) and the main parallel beams II (5) of the main frame are respectively arranged in a staggered way at intervals; a frame moving hydraulic cylinder (15) is arranged between the main front cross beam (3) of the main frame and the auxiliary rear cross beam (6) of the auxiliary frame; an embedded top protection mechanism (11) is arranged at the upper part of the front end of the support frame body; the mounting cantilever beams (8) arranged at the front ends of the main frames of the support frame bodies comprise arc-shaped lifting clamping grooves (22), and the arc-shaped lifting clamping grooves (22) are respectively hinged with the front ends of all main parallel beams II (5) of the main frames through rotating swing arms (21); a cantilever beam hydraulic cylinder (23) is arranged between the lower part of the rotary swing arm (21) and the lower part of the front end of the main forward beam II (5); the rear part of an embedded type top protection mechanism (11) arranged at the front end of the support frame body is in sliding lap joint with the front ends of a main forward beam I (4), a main forward beam II (5) and an auxiliary forward beam (2), the front ends of the auxiliary forward beams (2) of the auxiliary frame of the support frame body are respectively provided with a pushing hydraulic cylinder (18), and the front ends of the pushing hydraulic cylinders (18) are provided with auxiliary pushing blocks (19); the embedded type top protection mechanism (11) is of a split assembly type structure and consists of a middle top protection assembly (24) and side top protection assemblies (25) symmetrically arranged on two sides of the middle top protection assembly (24); the middle roof protection assembly (24) comprises a middle arc-shaped top plate (27), and a plurality of coal wall gear shaping teeth (26) which are arranged at equal intervals along the inner cambered surface of the middle arc-shaped top plate are arranged at the front part of the middle arc-shaped top plate (27); the middle part of the middle arc-shaped top plate (27) is provided with a middle vertical plate (28) which is transversely arranged; the side roof protection assembly (25) comprises a side arc-shaped top plate (29), and a plurality of coal wall gear shaping teeth (26) which are arranged at equal intervals along the inner cambered surface of the side arc-shaped top plate are arranged at the front part of the side arc-shaped top plate (29); the middle part of the side arc-shaped top plate (29) is provided with a side vertical plate (30) which is transversely arranged; the coal wall gear shaping teeth (26) can be pressed into the coal wall of the tunneling head; the auxiliary pushing block (19) is used for contacting with the middle vertical plate (28) and the side vertical plates (30); the middle top protection component (24) of the embedded top protection mechanism (11) is in sliding connection with the side top protection components (25) on two sides through the side sliding mechanism (32).
2. The soft coal heading U-shed mechanized installation roof guard of claim 1, wherein: the side sliding mechanism (32) comprises a sliding groove (34) arranged on the side part of the middle roof protection assembly (24), and a sliding lug (35) arranged on one side of the side roof protection assembly (25) close to the middle roof protection assembly (24).
3. The soft coal heading U-shed mechanized installation roof guard of claim 1, wherein: the front part of the embedded type roof protection mechanism (11) is provided with a protection net (12) which is vertically downwards arranged.
4. A soft coal heading U-shed mechanized installation roof guard as in claim 3, wherein: the protective net (12) is hung on a protective net hanging ring (33) arranged on the inner side of a middle arc-shaped top plate (27) of the middle protective top assembly (24); a protective net hydraulic cylinder (13) is arranged between the frame of the protective net (12) and a hinged lug plate (31) arranged on a side vertical plate (30) of the side protective top assembly (25).
5. The soft coal heading U-shed mechanized installation roof guard of claim 1, wherein: the rear part of the support frame body is provided with an inclined support hydraulic cylinder (16); the telescopic end of the diagonal bracing hydraulic cylinder (16) is hinged with the auxiliary rear cross beam (6) of the auxiliary frame, and the fixed end of the diagonal bracing hydraulic cylinder (16) is supported on the roadway bottom plate.
6. The soft coal heading U-shed mechanized installation roof guard of claim 1, wherein: the main and the auxiliary beams (2) are respectively in a sectional hinged structure form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711022073.0A CN107542482B (en) | 2017-10-27 | 2017-10-27 | Soft coal tunneling U-shaped shed mechanical installation roof protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711022073.0A CN107542482B (en) | 2017-10-27 | 2017-10-27 | Soft coal tunneling U-shaped shed mechanical installation roof protection device |
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| CN107542482A CN107542482A (en) | 2018-01-05 |
| CN107542482B true CN107542482B (en) | 2024-09-10 |
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| CN201711022073.0A Active CN107542482B (en) | 2017-10-27 | 2017-10-27 | Soft coal tunneling U-shaped shed mechanical installation roof protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102654060A (en) * | 2012-05-23 | 2012-09-05 | 辽宁天安矿山科技有限公司 | Tunnel excavation staggered type supporting device |
| CN203008944U (en) * | 2013-01-09 | 2013-06-19 | 山东立业机械装备有限公司 | Comprehensive fore support for excavation head |
| CN207377584U (en) * | 2017-10-27 | 2018-05-18 | 沈阳天安科技股份有限公司 | Cherry coal tunnels U-shaped canopy mechanization installation shield ejection device |
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| CN102128040B (en) * | 2011-01-18 | 2012-12-12 | 阜新工大科技发展有限公司 | Hydraulic striding-type advanced-support equipment |
| CN103195457A (en) * | 2013-04-15 | 2013-07-10 | 辽宁天安矿山科技有限公司 | Supporting method for roadway fully-mechanized drivage operation without withdrawal of roadheader |
| CN203223239U (en) * | 2013-05-06 | 2013-10-02 | 辽宁天安矿山科技有限公司 | Roadway advance timbering support used for assisting machine to move |
| CN104047627A (en) * | 2014-07-15 | 2014-09-17 | 沈阳天安矿山机械股份有限公司 | Mining roadway frame style advanced support bracket |
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|---|---|---|---|---|
| CN102654060A (en) * | 2012-05-23 | 2012-09-05 | 辽宁天安矿山科技有限公司 | Tunnel excavation staggered type supporting device |
| CN203008944U (en) * | 2013-01-09 | 2013-06-19 | 山东立业机械装备有限公司 | Comprehensive fore support for excavation head |
| CN207377584U (en) * | 2017-10-27 | 2018-05-18 | 沈阳天安科技股份有限公司 | Cherry coal tunnels U-shaped canopy mechanization installation shield ejection device |
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