A temporary reinforcing and supporting device for a coal mine roadway in coal mining and tunneling

Abstract

The present application relates to the technical field of temporary support of roadway, and discloses a temporary reinforcing and supporting device for coal mine roadway in coal mining and tunneling, which comprises a moving mechanism, a supporting frame assembly, a hydraulic lifting driving mechanism, an arc-shaped bottom plate and a supporting mechanism. The moving mechanism comprises two groups of self-walking bottom plate assemblies, and a connecting sleeve is installed on the top of each of the two groups of self-walking bottom plate assemblies. Two upright columns are fixedly connected to the bottom of the supporting frame assembly, and the two upright columns are slidably inserted into the two connecting sleeves. The hydraulic lifting driving mechanism is installed on the connecting sleeve and is used for driving the upright columns to lift. The bottom of the arc-shaped bottom plate is fixedly connected to the supporting frame assembly. The supporting mechanism comprises a plurality of layered buffer supporting plate assemblies, and each of the layered buffer supporting plate assemblies is installed on the top surface of the arc-shaped bottom plate through a self-adapting supporting part. The present application can realize autonomous movement and rapid alignment, can also realize uniform and close supporting of the whole cross section, and can improve the operation efficiency of roadway tunneling support and the overall supporting rigidity of the roadway.

Description

Technical Field

[0001] This invention relates to the field of temporary roadway support technology, and in particular to a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling. Background Technology

[0002] During coal mine tunneling operations, the surrounding rock of roadways is easily affected by tunneling disturbances, stress release, and rock rheological effects, leading to potential hazards such as roof fracture, loosening of surrounding rock, rockfall, and even localized collapse. These hazards severely restrict the safety and efficiency of roadway tunneling construction. Therefore, it is essential to implement timely and effective temporary reinforcement and support for the roadway behind the tunneling face. Currently, temporary support for coal mine roadways mostly adopts single hydraulic props, simple frame supports, or fixed arch support methods. These support structures have significant technical shortcomings.

[0003] In existing technologies, most temporary support devices have fixed structures and are inconvenient to move and transport. After the tunneling process progresses, the support equipment needs to be frequently moved and disassembled manually, resulting in high labor intensity and delayed support follow-up, making it difficult to achieve rapid synchronous support with the tunneling operation. At the same time, traditional supports mostly adopt rigid integral bearing structures, which do not have the ability to layer buffer and adaptively fit the surrounding rock. When the roadway roof is uneven or the stress distribution of the surrounding rock is uneven, the support plate has poor fit and concentrated stress, which can easily lead to problems such as local suspended support and stress overload damage. It cannot meet the temporary protection needs of fractured surrounding rock and complex rock strata. In addition, conventional support equipment has poor height adjustment flexibility and weak overall adaptability. It is difficult to adaptively adjust the support height and support posture according to the actual height of the roadway and the undulation of the roof. The concentrated stress generated by the small deformation of the surrounding rock cannot be effectively released and buffered, which can easily cause support failure and roof collapse risk, which greatly affects the safety and continuity of roadway tunneling construction.

[0004] Therefore, a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling, which aims to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling, comprising: The mobile mechanism includes two sets of self-propelled chassis assemblies, and a connecting sleeve is installed on the top of each set of self-propelled chassis assemblies. A support frame assembly, wherein two columns are fixedly connected to the bottom sides of the support frame assembly, and the two columns are slidably extended into the two connecting sleeves respectively; A hydraulic lifting drive mechanism is mounted on the connecting sleeve and is used to drive the column to lift. An arc-shaped chassis, the bottom of which is fixedly connected to the support frame assembly; The support mechanism includes a plurality of layered buffer support plate assemblies, which are respectively mounted on the top surface of the arc-shaped chassis by adaptive support components, and the plurality of layered buffer support plate assemblies are arranged at intervals.

[0007] According to the present invention, a temporary reinforcement support device for coal mine roadways during coal mining and tunneling is provided, wherein a pressure monitoring component is installed inside the layered buffer support plate assembly, and a control system and an audible and visual early warning component are installed on the support frame assembly; both the pressure monitoring component and the audible and visual early warning component are electrically connected to the control system.

[0008] According to the present invention, a temporary reinforcement support device for coal mine roadways during coal mining and tunneling includes a layered buffer support plate assembly comprising, from top to bottom, a perforated steel plate dispersion layer, a flexible buffer material layer, and a rigid load-bearing plate; the bottom of the rigid load-bearing plate is fixedly connected to the top of the adaptive support component, and the pressure monitoring component is installed on the top surface of the rigid load-bearing plate.

[0009] According to the present invention, a temporary reinforcement support device for coal mine roadways during coal mining and tunneling includes an adaptive support component comprising a telescopic rod, the two ends of which are respectively fixedly connected to the rigid bearing plate and the arc-shaped base. A spring is sleeved on the telescopic rod, and the two ends of the spring are respectively fixedly connected to the rigid bearing plate and the arc-shaped base.

[0010] According to the present invention, a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling is provided, wherein a plurality of partitions are fixedly connected to the top surface of the arc-shaped chassis, and a plurality of telescopic rods are alternately arranged with the plurality of partitions.

[0011] According to the present invention, a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling is provided. The self-propelled chassis assembly includes a chassis body, on which a walking track, a walking control system and a drive component are installed. The drive component is used to drive the walking track and is electrically connected to the walking control system. A positioning groove is provided on the top surface of the chassis body, and the bottom of the connecting sleeve is fixedly connected to the positioning groove.

[0012] According to the present invention, a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling is provided. The hydraulic lifting drive mechanism is provided in two sets. The hydraulic lifting drive mechanism includes at least two hydraulic rods. The cylinder end of the hydraulic rod is fixedly installed on the outer side wall of the connecting sleeve. The piston end of the hydraulic rod is fixedly installed with a connecting block. The connecting block is fixedly connected to the side wall of the column.

[0013] According to the present invention, a temporary reinforcement support device for coal mine roadways during coal mining and tunneling is provided, wherein the support frame assembly includes a top support plate and a plurality of support rods, and the top support plate is fixedly installed on the top of the two columns; The bottom of several of the supporting rods is fixedly installed on the top surface of the top support plate, and the top of each rod is fixedly connected to the arc-shaped chassis.

[0014] According to the present invention, a temporary reinforcement support device for coal mine roadways during coal mining and tunneling is provided, wherein a reinforcing rib is installed between the top support plate and the column.

[0015] According to the present invention, a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling is provided, wherein the pressure monitoring component adopts a pressure sensor.

[0016] The present invention discloses the following technical effects: This invention uses two sets of self-propelled chassis components to form a mobile mechanism. With the sliding fit structure of the bottom column and connecting sleeve of the support frame component, the device can move autonomously and quickly, without the need for frequent manual disassembly and transportation. It can keep up with the tunnel excavation process and provide real-time support, completely solving the problems of slow relocation, complicated procedures and high labor intensity of traditional support. It effectively shortens the roof time and improves the timeliness and efficiency of tunnel excavation support.

[0017] This invention uses a hydraulic lifting mechanism to drive the column to extend and retract, which can precisely adjust the overall support height. It can adapt to different roadway heights and roof undulations. The support height adjustment is flexible and the alignment is precise, which greatly improves the roadway adaptability and versatility of the device. The overall support frame components, together with the arc-shaped chassis, form an arched overall support structure, which conforms to the mechanical distribution characteristics of the roadway surrounding rock. The overall load-bearing stability is strong, which can effectively improve the overall support stiffness of the roadway.

[0018] This invention employs a multi-component layered buffer support plate assembly with adaptive support components arranged at intervals to form a support mechanism. This changes the traditional overall rigid support mode. The layered independent support structure can adaptively conform to the concave and convex contours of the surrounding rock, eliminating support gaps and achieving uniform support across the entire cross-section. At the same time, it has a good buffering and energy absorption effect, which can effectively release the concentrated stress generated by the small deformation of the surrounding rock, buffer the impact load of falling rocks from the roof, avoid stress concentration damage to rigid support, significantly improve the safety and reliability of temporary support under fractured surrounding rock and complex geological conditions, effectively prevent the risk of roof collapse and local collapse, and ensure the safe and stable operation of tunnel excavation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the support mechanism in this invention; Figure 3 This is a schematic diagram of the structure of the layered buffer support plate assembly in this invention; Figure 4 This is a schematic diagram of the structure of the self-propelled chassis assembly in this invention.

[0021] The components include: 1. Connecting sleeve; 2. Column; 3. Arc-shaped chassis; 4. Layered buffer support plate assembly; 41. Perforated steel plate dispersion layer; 42. Flexible buffer material layer; 43. Rigid load-bearing plate; 5. Adaptive support component; 6. Control system; 7. Audible and visual warning component; 8. Partition plate; 9. Chassis body; 10. Track; 11. Walking control system; 12. Drive component; 13. Positioning groove; 14. Hydraulic rod; 15. Connecting block; 16. Top support plate; 17. Support connecting rod; 18. Reinforcing rib. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-4 This invention provides a temporary reinforcement and support device for coal mine roadways during coal mining and tunneling, comprising: The mobile mechanism includes two sets of self-propelled chassis assemblies, and a connecting sleeve 1 is installed on the top of each set of self-propelled chassis assemblies. The support frame assembly has columns 2 fixedly attached to both sides of its bottom, and the two columns 2 slide into the two connecting sleeves 1 respectively. A hydraulic lifting drive mechanism is installed on the connecting sleeve 1 and is used to drive the column 2 to lift. Arc-shaped chassis 3, the bottom of which is fixedly connected to the support frame assembly; The support mechanism includes several layered buffer support plate assemblies 4, which are respectively installed on the top surface of the arc-shaped chassis 3 through adaptive support components 5, and the several layered buffer support plate assemblies 4 are arranged at intervals.

[0025] With this configuration, the present invention uses two sets of self-propelled chassis components to form a mobile mechanism. In conjunction with the sliding fit structure between the bottom column 2 of the support frame component and the connecting sleeve 1, the entire device can move autonomously and quickly align itself. It eliminates the need for frequent manual disassembly and relocation, and can closely follow the tunnel excavation process to provide real-time support. This completely solves the problems of slow relocation, cumbersome procedures, and high labor intensity of traditional support systems, effectively shortens the roof-free time, and improves the timeliness and efficiency of tunnel excavation support.

[0026] This invention uses a hydraulic lifting mechanism to drive the column 2 to extend and retract, which can precisely adjust the overall support height. It can adapt to different roadway heights and roof undulations. The support height adjustment is flexible and the alignment is precise, which greatly improves the roadway adaptability and versatility of the device. The overall support frame components, together with the arc-shaped chassis 3, form an arched overall support structure, which conforms to the mechanical distribution characteristics of the roadway surrounding rock. The overall load-bearing stability is strong, which can effectively improve the overall support stiffness of the roadway.

[0027] This invention employs a multi-component layered buffer support plate assembly 4, arranged in a spaced manner with adaptive support components 5 to form a support mechanism. This changes the traditional overall rigid support mode. The layered independent support structure can adaptively conform to the contours of the concave and convex surrounding rock of the roof, eliminating support gaps and achieving uniform support across the entire cross-section. At the same time, it has a good buffering and energy absorption effect, which can effectively release the concentrated stress generated by the small deformation of the surrounding rock, buffer the impact load of falling rocks from the roof, avoid stress concentration damage to rigid support, significantly improve the safety and reliability of temporary support under fractured surrounding rock and complex geological conditions, effectively prevent the risk of roof collapse and local collapse, and ensure the safe and stable operation of tunnel excavation.

[0028] The scheme is further optimized by installing a pressure monitoring component inside the layered buffer support plate assembly 4, and installing a control system 6 and an audible and visual warning component 7 on the support frame assembly; both the pressure monitoring component and the audible and visual warning component 7 are electrically connected to the control system 6.

[0029] During the support operation, the pressure monitoring component can collect real-time support load data transmitted by the roof and surrounding rock, dynamically monitor changes in surrounding rock stress, localized concentrated pressure, and fluctuations in impact loads, and transmit the real-time pressure signal to the control system 6. The control system 6 has a built-in preset safety pressure threshold and can automatically compare and analyze real-time monitoring data. When the surrounding rock pressure increases abnormally, the support load exceeds the limit, or the surrounding rock shows a tendency to become unstable, the audible and visual warning component 7 is immediately triggered to issue an audible and visual alarm signal, promptly reminding on-site personnel to take timely precautions, investigate hidden dangers, and adjust the support status. This enables visualization of the roadway support status and advance risk prediction, effectively improving the safety and controllability of deep roadway support operations.

[0030] Further optimization of the scheme: the layered buffer support plate assembly 4 includes a perforated steel plate dispersion layer 41, a flexible buffer material layer 42 and a rigid load-bearing plate 43, which are fixedly connected from top to bottom; the bottom of the rigid load-bearing plate 43 is fixedly connected to the top of the adaptive support component 5, and the pressure monitoring component is installed on the top surface of the rigid load-bearing plate 43.

[0031] The overall structure adopts a composite structure of alternating strong, weak, and strong layers. The perforated steel plate dispersion layer 41 is the upper rigid strong layer, which can quickly bear the impact load of the surrounding rock on the roof. The perforated structure of the plate achieves stress dispersion and shock wave scattering, avoiding local stress concentration. The middle flexible buffer material layer 42 is made of rubber or foamed concrete and is a flexible weak layer. It can fully absorb and dissipate the impact energy and deformation potential energy of the surrounding rock through its own compression deformation, achieving flexible pressure relief and energy release. The bottom rigid load-bearing plate 43 is the lower rigid strong layer, which is responsible for stably bearing the remaining load and uniformly transferring the load to the lower support structure. The shock wave is repeatedly reflected, refracted, and attenuated between the multi-layer interfaces, gradually reducing the peak load transmitted to the bottom. It has the dual characteristics of flexible pressure relief and energy release and rigid pressure stabilization and resistance, which can adapt to the deformation law of the surrounding rock in deep high-stress and large-deformation roadways. While allowing the surrounding rock to undergo moderate pressure relief deformation, it continuously provides stable support resistance and prevents the support from overload failure or excessive deformation instability.

[0032] Further optimization of the scheme: the adaptive support component 5 includes a telescopic rod, the two ends of which are fixedly connected to the rigid load-bearing plate 43 and the arc-shaped chassis 3 respectively. A spring is provided on the outer sleeve of the telescopic rod, and the two ends of the spring are fixedly connected to the rigid load-bearing plate 43 and the arc-shaped chassis 3 respectively.

[0033] During support operations, vertical guidance and limiting are achieved using telescopic rods to ensure stable and non-deviation-prone vertical expansion and contraction of the support plate; external springs form an elastic adaptive support system. When minor settlement, deformation, or local impact occurs in the surrounding rock of the roadway roof, the springs can adaptively compress and yield, further releasing the surrounding rock stress and buffering impact energy in conjunction with the composite support plate, avoiding stress concentration and structural cracking caused by rigid support malfunction; when the deformation of the surrounding rock tends to stabilize, the springs elastically return to their original position, continuously providing a constant pre-tightening support force to the support plate, ensuring that the support plate always fits tightly against the roof and surrounding rock, without any suspension or loosening. Through mechanical elastic adaptive adjustment, full-process flexible pressure-stabilizing support is achieved, significantly improving the adaptability and stability of support for fractured surrounding rock and roadways with large deformations.

[0034] Further optimization of the scheme: the top surface of the arc-shaped chassis 3 is fixed with several partitions 8, and several telescopic rods are arranged alternately with several partitions 8.

[0035] The partition plate 8 can isolate the independent adaptive support components 5 and the layered buffer support plate assembly 4 into zones, avoiding deformation compression, displacement interference, and stress superposition between adjacent support units. Under the action of local uneven deformation of the surrounding rock and local impact load, each support unit can expand and contract independently and adjust adaptively without interfering with each other, realizing zoned independent and precise support, effectively improving the uniformity of the full-section support, preventing local support overload and continuous failure, and further strengthening the stability and impact resistance of the overall support structure.

[0036] The scheme is further optimized. The self-propelled chassis component includes a chassis body 9. The chassis body 9 is equipped with a walking track 10, a walking control system 11 and a drive component 12. The drive component 12 is used to drive the walking track 10 and is electrically connected to the walking control system 11. A positioning groove 13 is opened on the top surface of the chassis body 9, and the bottom of the connecting sleeve 1 is fixedly connected to the positioning groove 13.

[0037] During operation, the walking control system 11 controls the drive component 12 to operate, driving the walking track 10 to move smoothly. The tracked walking structure has a large ground contact area and good passability, and can adapt to uneven and muddy complex road surfaces, ensuring that the device moves smoothly. The top positioning groove 13 can realize the precise positioning and limiting connection of the connecting sleeve 1, improve the assembly coaxiality and structural rigidity of the upper support structure and the bottom walking mechanism, avoid structural displacement and loosening during long-term operation, ensure the smooth movement of the whole machine and the accurate positioning of the support, and realize the rapid follow-up, accurate positioning and stable movement of the support device.

[0038] To further optimize the design, the hydraulic lifting drive mechanism is provided in two sets. The hydraulic lifting drive mechanism includes at least two hydraulic rods 14. The cylinder end of the hydraulic rod 14 is fixedly installed on the outer side wall of the connecting sleeve 1. The piston end of the hydraulic rod 14 is fixedly installed with a connecting block 15. The connecting block 15 is fixedly connected to the side wall of the column 2.

[0039] During lifting operations, multiple sets of hydraulic rods 14 extend and retract synchronously, collaboratively driving the column 2 to slide smoothly vertically within the connecting sleeve 1. Compared to a single-rod drive structure, the multi-rod symmetrical drive provides more balanced force distribution, effectively offsetting lateral load moments and preventing issues such as column 2 jamming, uneven wear, and tilting. It can precisely and smoothly adjust the overall support height according to the roadway support requirements, with controllable lifting stroke and high support stability. It can adapt to different roadway heights and roof undulations, ensuring precise lifting and adjustment of the support structure and uniform and reliable load-bearing capacity.

[0040] The scheme is further optimized. The support frame assembly includes a top support plate 16 and several support rods 17. The top support plate 16 is fixedly installed on the top of the two columns 2. The bottom of several supporting rods 17 are fixedly installed on the top surface of the top support plate 16, and the top of each rod is fixedly connected to the arc-shaped chassis 3.

[0041] The overall structure distributes the roof support load borne by the upper arc-shaped chassis 3 evenly to the top support plate 16 and the bottom column 2 through multiple sets of support rods 17, achieving multi-point distribution and uniform transfer of load, avoiding local stress concentration, and significantly improving the overall structural stiffness and load-bearing capacity. The truss frame structure is lightweight, high-strength, and stable, and can continuously provide a stable support foundation for the upper support mechanism, ensuring the structural integrity and reliability of long-term temporary support for the roadway.

[0042] Further optimization of the design involves installing reinforcing ribs 18 between the top support plate 16 and the column 2. These reinforcing ribs 18 reinforce the structural corner where the top support plate 16 connects to the column 2. This location is a critical load-bearing node for the entire machine, subjected to long-term vertical pressure and lateral impact loads, making it prone to stress concentration, welding fatigue, and structural deformation. The reinforcing ribs 18 effectively increase the load-bearing area of ​​the node, optimize the force transmission path, strengthen the connection strength and structural rigidity between the support plate and the column, resist bending, shearing, and torsional stresses from complex surrounding rock loads, prevent node deformation and cracking, improve the structural strength, impact resistance, and service life of the overall support frame, and ensure stable operation of the equipment under high-intensity downhole support conditions.

[0043] The design was further optimized by employing pressure sensors for the pressure monitoring components. These sensors can accurately and in real-time collect static support pressure and dynamic impact pressure transmitted by each layer of the support structure, capturing small fluctuations in surrounding rock stress, instantaneous impact loads, and slow pressurization changes at high frequency. The analog signals collected by the sensors are converted into digital signals in real-time and transmitted to the control system 6, providing precise data support for support pressure analysis, surrounding rock stability assessment, and over-limit early warning. This enables digital and precise monitoring of the roadway support status, overcoming the shortcomings of traditional support systems that cannot detect changes in surrounding rock stress, rely solely on manual inspections, and suffer from delayed detection of potential hazards.

[0044] Further optimizing the design, retractable sidewall support components are symmetrically installed on both sides of the arc-shaped chassis 3. Each retractable sidewall support component consists of a sidewall support plate, multi-stage telescopic support rods, and an adjusting hydraulic cylinder. The two ends of the multi-stage telescopic support rods are respectively hinged to the side of the arc-shaped chassis 3 and the back of the sidewall support plate. After the device completes the roof support, the adjusting hydraulic cylinder can be activated according to the condition of the surrounding rock on both sides of the roadway, driving the multi-stage telescopic support rods to extend and push the sidewall support plates on both sides to fit against the surrounding rock on both sides of the roadway, forming a combined roof and sidewall support system. This effectively constrains the inward convergence deformation of the surrounding rock on both sides, prevents the risk of sidewall spalling and rockfall, fills the protection gap of traditional temporary support that only protects the roof and not the sides, and works in conjunction with the top layered buffer support to form a full-section temporary protection structure, significantly improving the overall support safety of roadways with fractured surrounding rock.

[0045] To further optimize the design, multi-point displacement sensors are installed on the top of the layered buffer support plate assembly 4. The sensor probes can extend into boreholes within the surrounding rock of the roof and are electrically connected to the control system 6, forming a real-time monitoring system for rock delamination. These multi-point displacement sensors can directly collect the relative displacement, delamination amount, and settlement rate of rock strata at different depths in the roof, accurately capturing early signs of instability such as crack expansion and strata separation within the surrounding rock, and transmitting the displacement data to the control system 6 in real time. When the delamination amount or settlement rate exceeds the safety threshold, the system simultaneously triggers an alarm from the audible and visual warning component 7, achieving multi-dimensional monitoring of the surrounding rock condition from the surface inwards. This allows for early prediction of roof instability risks, providing more sufficient warning time for support parameter adjustments and personnel evacuation, further enhancing the risk prevention and control capabilities of roadway support.

[0046] The design was further optimized by adding a flexible anti-falling rockfill safety net around the perimeter of the support frame components. The net is detachably fixed to the edge of the arc-shaped chassis 3 and the outer side of the columns 2 via hooks and clips, completely covering the perimeter and front and rear ends of the support device. Tunnel excavation disturbances can easily cause sporadic rock fragments and debris to fall from the roof and walls. Traditional support structures can only protect the top pressure area, and small pieces of falling rock can easily injure equipment components and workers below. The flexible anti-falling rockfill safety net effectively intercepts and buffers falling loose rock and debris, preventing fragments from splashing and rolling down, forming a comprehensive protective barrier. This not only protects precision components such as equipment sensors and hydraulic lines from damage but also provides additional safety protection for workers below, significantly improving the safety redundancy of on-site operations.

[0047] Further optimizing the design, multiple sets of atomizing spray heads are added to the front end of the arc-shaped chassis 3. These spray heads are connected to the underground water supply system via pipelines, and their start / stop and spray intensity are controlled by the control system 6. During tunnel excavation, the amount of dust generated at the face is high. Traditional temporary supports lack dust suppression capabilities, resulting in high dust concentrations in the working environment, affecting personnel health and visibility. When the device moves to the support behind the excavation face, the atomizing spray heads can be activated simultaneously to form a fine water mist curtain, quickly settling the floating dust and rock powder generated during excavation, effectively reducing the dust concentration in the face area. This function starts and stops synchronously with the support operation, eliminating the need for additional dust suppression equipment, thus improving the underground working environment and enhancing the coordination efficiency of the excavation and support processes.

[0048] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0049] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A temporary reinforcing support device for a coal mine roadway in coal mining excavation, characterized in that, include: The mobile mechanism includes two sets of self-propelled chassis assemblies, and a connecting sleeve (1) is installed on the top of each set of self-propelled chassis assemblies. A support frame assembly, wherein two columns (2) are fixedly connected to the bottom sides of the support frame assembly respectively, and the two columns (2) are slidably inserted into the two connecting sleeves (1); A hydraulic lifting drive mechanism is installed on the connecting sleeve (1) and is used to drive the column (2) to lift. Arc-shaped chassis (3), the bottom of which is fixedly connected to the support frame assembly; The support mechanism includes a plurality of layered buffer support plate assemblies (4), which are respectively mounted on the top surface of the arc-shaped chassis (3) by adaptive support components (5), and the plurality of layered buffer support plate assemblies (4) are arranged at intervals.

2. The temporary reinforcement support device for coal mine roadway in coal mining tunneling according to claim 1, characterized in that: The layered buffer support plate assembly (4) is equipped with a pressure monitoring component, and the support frame assembly is equipped with a control system (6) and an audible and visual warning component (7); the pressure monitoring component and the audible and visual warning component (7) are both electrically connected to the control system (6).

3. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 2, characterized in that: The layered buffer support plate assembly (4) includes a perforated steel plate dispersion layer (41), a flexible buffer material layer (42), and a rigid bearing plate (43) fixedly connected from top to bottom; the bottom of the rigid bearing plate (43) is fixedly connected to the top of the adaptive support component (5), and the pressure monitoring component is installed on the top surface of the rigid bearing plate (43).

4. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 3, characterized in that: The adaptive support component (5) includes a telescopic rod, the two ends of which are fixedly connected to the rigid bearing plate (43) and the arc-shaped chassis (3) respectively. A spring is provided on the telescopic rod, the two ends of which are fixedly connected to the rigid bearing plate (43) and the arc-shaped chassis (3) respectively.

5. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 4, characterized in that: The top surface of the arc-shaped chassis (3) is fixed with several partitions (8), and several telescopic rods and several partitions (8) are arranged alternately.

6. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 1, characterized in that: The self-propelled chassis assembly includes a chassis body (9), on which a walking track (10), a walking control system (11) and a drive component (12) are mounted. The drive component (12) is used to drive the walking track (10), and the drive component (12) is electrically connected to the walking control system (11). A positioning groove (13) is provided on the top surface of the chassis body (9), and the bottom of the connecting sleeve (1) is fixedly connected to the positioning groove (13).

7. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 6, characterized in that: The hydraulic lifting drive mechanism is provided in two sets. The hydraulic lifting drive mechanism includes at least two hydraulic rods (14). The cylinder end of the hydraulic rod (14) is fixedly installed on the outer side wall of the connecting sleeve (1). The piston end of the hydraulic rod (14) is fixedly installed with a connecting block (15). The connecting block (15) is fixedly connected to the side wall of the column (2).

8. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 1, characterized in that: The support frame assembly includes a top support plate (16) and several support rods (17), wherein the top support plate (16) is fixedly installed on the top of the two columns (2); The bottom of several of the support rods (17) are fixedly installed on the top surface of the top support plate (16), and the top of each rod is fixedly connected to the arc-shaped chassis (3).

9. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 8, characterized in that: A reinforcing rib (18) is installed between the top support plate (16) and the column (2).

10. The temporary reinforcement and support device for coal mine roadways during coal mining and tunneling according to claim 2, characterized in that: The pressure monitoring component uses a pressure sensor.

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