Mining anchor rod supporting device and hydraulic anchor rod drill carriage

Abstract

The invention discloses a mining anchor rod supporting device and a hydraulic anchor rod drill carriage, the mining anchor rod supporting device has a first state and a second state, in the first state, when at least one of the pressure of a cooling liquid of a cooling hole and the flow of the cooling liquid of the cooling hole is lower than a preset value, an anchor hole drilling assembly stops drilling work, and in the second state, the anchor hole drilling assembly stops drilling work. And when the driving pressure of the drilling box and / or the feeding pressure of the drilling box are / is higher than a preset value, the drilling box drives the drilling rod to retreat by a preset distance in the drilling hole and move back and forth within a preset range. The mining anchor rod supporting device can adapt to various complex and changeable working conditions, the operation time is saved, and the labor cost and the labor intensity are reduced.

Description

Technical Field

[0001] This invention relates to the field of coal mining, specifically to a mine anchor bolt support device and a hydraulic anchor bolt drilling rig. Background Technology

[0002] In coal mine operations, bolt support is the primary method of roadway support, effectively ensuring production safety. Bolt support typically involves the sequential steps of drilling anchor holes, filling with anchoring agent, and installing anchor bolts.

[0003] In related technologies, mining anchor bolt support devices cannot predict "drill blockage" and "drill jamming" failures. Manual intervention is required after these failures occur. This can lead to borehole failure and reduced work efficiency, as well as increased wear or damage to drilling tools and higher operating costs. Summary of the Invention

[0004] This invention is based on the inventor's discoveries and understanding of the following facts and problems: In related technologies, the supply status (pressure, flow rate) of coolant is not monitored online in real time. When coolant leaks, pipeline blockages, or supply pump failures occur, the coolant pressure or flow rate will drop abnormally. However, the equipment cannot identify such anomalies in time and continues drilling operations. This leads to rapid high-temperature wear of the drill rod and drill bit due to the lack of effective cooling and lubrication, and may even cause high-temperature annealing failure of the drill bit. This not only increases the cost of consumables but may also cause safety hazards such as drill bit jamming and borehole collapse. Furthermore, the complex geological conditions of underground tunnels make drilling prone to encountering abnormalities such as hard rock interlayers, rock powder accumulation, and drill bit jamming. These abnormalities can cause a sudden increase in the driving pressure (pressure corresponding to the rotation torque) or feed pressure (pressure corresponding to the propulsion resistance) of the drill box. Related technologies typically address these issues by manually stopping the machine for troubleshooting or by forcing the feed. However, manual shutdowns are slow and can easily cause equipment damage such as drill pipe bending and drill bit chipping. Forcing the feed further exacerbates resistance concentration, leading to equipment overload shutdowns and even borehole failure, severely impacting operational continuity and efficiency. Therefore, embodiments of the present invention propose a mining anchor bolt support device that is simple in structure, has high drilling efficiency, and has a long service life.

[0005] This invention provides a hydraulic anchor drilling rig with high working efficiency and simple structure.

[0006] According to an embodiment of the present invention, a mining anchor bolt support device is characterized in that it comprises: a frame; an anchor hole drilling assembly, the anchor hole drilling assembly including a drill box and a drill rod, the drill box being disposed on the frame and movable relative to the frame along the height direction of the frame, the drill rod being disposed on the drill box, the drill box driving the drill rod to rotate about its axial direction and the drill box driving the drill rod to move around the drill rod, the cooling hole being adapted to allow coolant to be introduced so that the coolant is sprayed out through the cooling hole to cool and heat the drill rod, the anchor hole drilling assembly having a first state and a second state, in the first state, when at least one of the pressure of the coolant in the cooling hole and the flow rate of the coolant in the cooling hole is lower than a preset value, the anchor hole drilling assembly stops drilling, in the second state, when the driving pressure of the drill box and / or the feed pressure of the drill box is higher than a preset value, the drill box driving the drill rod to retract a preset distance in the borehole and reciprocate within a preset range until the feed pressure is lower than the preset value, the anchor hole drilling assembly resumes drilling.

[0007] The mining anchor bolt support device of this invention realizes real-time online monitoring of the flow rate and pressure of coolant in the cooling hole in the first state, which can prevent abnormal situations such as blockage of cooling hole pipelines in a timely manner, and avoid the lack of effective cooling and lubrication of drill rod and drill bit due to insufficient coolant supply, thereby reducing equipment maintenance costs and replacement frequency. In the second state, the driving pressure of the drill box driving the drill rod to rotate and the feed pressure driving the drill rod to feed are continuously and dynamically monitored. It can quickly detect abnormal resistance situations such as hard rock interlayers, rock powder accumulation, and drill bit jamming encountered during drilling. Then, by automatically controlling the drill rod to retract a preset distance and move back and forth within a preset range, combined with continuous rotation to loosen obstacles and break through resistance, drilling is restarted after the pressure returns to normal. This effectively avoids serious failures such as drill rod bending, drill bit damage, and equipment overload caused by excessive drilling resistance. It not only ensures the construction quality and accuracy of anchor hole drilling, but also improves the adaptability and operational safety of the device in complex geological conditions, and ensures continuous progress of the construction process.

[0008] In some embodiments, the mining anchor bolt support device further includes a first monitoring component, which is disposed on the anchor hole drilling component. The first monitoring component is used to monitor the pressure and flow rate in the cooling hole. In the first state, when the first monitoring component detects that the pressure of the coolant in the cooling hole is lower than 0.6 MPa, and / or when the first monitoring component detects that the flow rate of the coolant in the cooling hole decreases by more than 30% within three seconds, the anchor hole drilling component stops drilling.

[0009] In some embodiments, the mining anchor bolt support device further includes a second monitoring component, which is disposed on the anchor hole drilling component. The second monitoring component is used to monitor the driving pressure of the drill box and the feed pressure of the drill box. In the second state, if the driving pressure of the drill box increases by 4 MPa or more within 3 seconds, and the feed pressure of the drill box increases by 4 MPa or more, the drill box drives the drill rod to retract a preset distance in the borehole and reciprocate within a preset range until the feed pressure is less than 3 MPa, and the anchor hole drilling component resumes drilling operation.

[0010] In some embodiments, the second state includes a first sub-state and a second sub-state. In the first sub-state, when both the feed pressure and the driving pressure are less than 3 MPa, the anchor hole drilling assembly resumes drilling operations. In the second sub-state, when the feed pressure is less than 3 MPa and the driving pressure is greater than 3 MPa, the anchor hole drilling assembly stops drilling operations.

[0011] In some embodiments, the preset distance is 35mm-45mm, and the preset range is 15mm-25mm.

[0012] In some embodiments, the anchor hole drilling assembly further includes a collection seat disposed on the frame and above the drill box. The collection seat has a through hole extending through the collection seat along the height direction of the frame. The drill rod passes through the through hole and is inserted into the tunnel. The collection seat is used to collect coolant flowing out of the drill rod.

[0013] Furthermore, the hydraulic anchor drilling rig provided by the present invention includes any of the mining anchor support devices described in the above embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the mining anchor bolt support device according to an embodiment of the present invention.

[0015] Figure 2 This is a rear view of the mining anchor bolt support device according to an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the collection seat and drill rod of the mining anchor bolt support device according to an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the structure of the collection seat of the mining anchor bolt support device according to an embodiment of the present invention.

[0018] 100. Mining anchor bolt support device; 1. Frame; 2. Anchor hole drilling assembly; 21. Drill box; 22. Drill rod; 3. Collection seat; 4. Guide plate; 5. Rotating frame; 6. Anchoring agent filling assembly; 7. Anchor bolt installation assembly. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following description, with reference to the accompanying drawings, describes a mining anchor bolt support device 100 according to an embodiment of the present invention.

[0021] like Figures 1-4 As shown, the mining anchor bolt support device 100 according to an embodiment of the present invention includes a frame 1 and an anchor hole drilling assembly 2.

[0022] Anchor hole drilling assembly 2 includes a drill box 21 and a drill rod 22. The drill box 21 is mounted on the frame 1 and is positioned relative to the frame 1 along the height direction of the frame 1 (e.g., ...). Figure 1 The drill rod 22 (shown in the up-down direction) is movable. It is mounted on the drill box 21. The drill box 21 drives the drill rod 22 to rotate around its axis, and the drill box 21 also drives the drill rod 22 to move around the drill rod 22. Cooling holes are suitable for introducing coolant, so that the coolant can be sprayed out through the cooling holes to cool the drill rod 22. Specifically, as shown... Figure 1 and Figure 2 As shown, the frame 1 is a frame extending in the vertical direction. The drill box 21 is mounted on the frame 1 and forms a sliding fit with the frame 1 in the height direction (i.e., vertical direction). It can be stably raised and lowered along the frame 1. The lower end of the drill rod 22 is mounted on the drill box 21. The drill box 21 drives the drill rod 22 to rotate at high speed around its own axis, providing cutting power for drilling operations. The drill box 21 can also drive the drill rod 22 to move synchronously in the vertical direction with the drill box 21, realizing drilling feed or rod retraction actions. Then, the drill bit at the lower end of the drill rod 22 completes the anchor hole drilling operation on the roadway rock wall.

[0023] The drill pipe 22 is equipped with a cooling hole that runs through it axially (vertically). The lower end of the cooling hole is connected to a coolant supply pipe and is connected to the working face of the drill bit. During operation, coolant (such as special drilling coolant, emulsion, etc.) is continuously introduced through the cooling hole. On the one hand, it can directly flush the cutting edge of the drill bit, quickly remove the heat generated during drilling, and prevent the drill bit from failing due to high-temperature annealing. On the other hand, it can form a lubricating film on the contact surface between the drill bit and the rock wall, reduce drilling friction resistance, reduce wear and tear on the drill pipe 22 and the drill bit, and also help to remove rock dust generated during drilling, ensuring the stability and operation quality of the anchor hole drilling assembly 2.

[0024] The anchor hole drilling assembly 2 has a first state and a second state. In the first state, when at least one of the pressure of the coolant in the cooling hole and the flow rate of the coolant in the cooling hole is lower than a preset value, the anchor hole drilling assembly 2 stops drilling. In the second state, when the driving pressure of the drill box 21 and / or the feed pressure of the drill box 21 is higher than a preset value, the drill box 21 drives the drill rod 22 to retract a preset distance in the borehole and reciprocate within a preset range until the feed pressure is lower than the preset value, at which point the anchor hole drilling assembly 2 resumes drilling.

[0025] Specifically, in the first state, the parameters of the coolant in the real-time cooling hole are monitored. If the coolant pressure is lower than the preset pressure value, or the coolant flow rate is lower than the preset flow rate value, or both pressure and flow rate fail to meet the preset requirements, it indicates that the drilling cuttings are not flushed away in time and are clogging the coolant pipeline. At this time, in order to avoid high-temperature wear and failure of the drill rod 22 and drill bit due to lack of effective cooling and lubrication, the anchor hole drilling assembly 2 automatically stops drilling operations, the rotation drive and feed drive of the drill box 21 are simultaneously cut off, the drill rod 22 stops its rotation and feed actions, and the coolant supply can be cut off in conjunction with the operation until the operator has investigated and resolved the cooling system fault, and the coolant pressure and flow rate are restored to the preset range before the drilling operation is restarted.

[0026] In the second state, the driving pressure (pressure signal corresponding to torque) of the drill box 21 driving the drill rod 22 to rotate and the feed pressure (pressure signal corresponding to propulsion resistance) of the drill box 21 driving the drill rod 22 to feed are monitored in real time. When the driving pressure of the drill box 21 is higher than the preset driving pressure value, or the feed pressure is higher than the preset feed pressure value, or both exceed the corresponding preset range, it is determined that the drilling resistance is abnormal (such as encountering hard rock interlayers, rock powder accumulation and blockage, drill bit jamming, etc. in the borehole). At this time, the drill box 21 is controlled to stop the feed action, and the drill rod 22 is driven to retract upward along the borehole axis with the drill box 21 a preset distance (this distance can be preset according to the anchor hole specifications and drilling conditions) to get out of the jamming or resistance concentration area; then, the drill rod 22 is controlled to move back and forth in a small amplitude within the preset range between the retraction endpoint and the original drilling position, while maintaining the rotation of the drill rod 22, and the reciprocating action loosens the rock powder accumulation and breaks the local resistance of the hard rock interlayer. During this process, the feed pressure is continuously monitored. When the feed pressure drops below the preset threshold, it is determined that the abnormal resistance has been resolved. The control system automatically switches to the normal drilling mode, and the drill box 21 drives the drill rod 22 to resume the normal feed speed and continue to complete the anchor hole drilling operation. This effectively avoids failures such as drill rod 22 bending, drill bit damage, or equipment overload caused by excessive resistance.

[0027] The mining anchor bolt support device 100 of this invention realizes real-time online monitoring of the flow rate and pressure of the coolant in the cooling hole through the first state, preventing abnormal situations such as blockage of the cooling hole pipeline, avoiding insufficient cooling and lubrication of the drill bit of the drill rod 22 due to insufficient coolant supply, and thus preventing problems such as high temperature wear and annealing failure. It ensures that the anchor hole drilling assembly 2 is always in a highly efficient and stable operating state, avoids interruption of construction progress due to equipment failure, reduces the wear of the drill bit of the drill rod 22, significantly extends the service life of the core components, and reduces equipment maintenance costs and replacement frequency.

[0028] In addition, the second state continuously and dynamically monitors the driving pressure of the drill box 21 driving the drill rod 22 to rotate and the feed pressure of the drill rod 22 to feed. It captures abnormal resistance situations such as hard rock interlayers, rock powder accumulation, and drill bit jamming encountered during drilling. By automatically controlling the drill rod 22 to retract a preset distance and move back and forth within a preset range, it continuously rotates to loosen obstacles and break through resistance. Drilling is restarted after the pressure returns to normal. This avoids serious failures such as drill rod 22 bending, drill bit damage, and equipment overload caused by excessive drilling resistance. It not only ensures the construction quality and accuracy of anchor hole drilling, but also improves the adaptability and operational safety of the device under complex geological conditions, ensuring continuous and efficient progress in the construction process.

[0029] In some embodiments, the mining anchor bolt support device 100 further includes a first monitoring component (not shown in the figure). The first monitoring component is disposed on the anchor hole drilling component 2. The first monitoring component is used to monitor the pressure and flow rate in the cooling hole. In a first state, when the first monitoring component monitors that the pressure of the coolant in the cooling hole is lower than 0.6 MPa, and / or when the first monitoring component monitors that the flow rate of the coolant in the cooling hole decreases by more than 30% within three seconds, the anchor hole drilling component 2 stops drilling. Specifically, the first monitoring component can be a flow sensor and a pressure sensor, and the first monitoring component is installed inside the cooling hole or in a pipe connected to the cooling hole. The first monitoring component monitors the pressure and flow rate inside the cooling hole. In the first state, the first monitoring component continuously monitors the pressure signal of the coolant inside the cooling hole. When the pressure value is detected to be lower than the preset safety threshold of 0.6MPa, or when the first monitoring component monitors the change in coolant flow rate and finds that the flow rate value is reduced by 30% or more compared with the normal working flow rate reference value within a continuous 3-second monitoring cycle, or when the above two abnormal conditions of insufficient pressure and sudden drop in flow rate occur simultaneously, it is determined that the cooling system has malfunctioned (which may be due to coolant leakage, abnormal supply pump, pipe blockage, or insufficient coolant storage, etc.).

[0030] To prevent high-temperature wear, reduced cutting performance, or even failure of the drill rod 22 and drill bit due to lack of effective cooling and lubrication, and to prevent drilling rock powder from accumulating and clogging the borehole due to high temperature, the anchor hole drilling assembly 2 immediately stops all drilling-related actions. Specifically, this includes cutting off the power output of the drill box 21 to drive the drill rod 22 to rotate, stopping the feed action of the drill box 21 driving the drill rod 22, and simultaneously closing the control valve of the coolant supply pipeline (or maintaining the minimum flow rate). Drilling can only be restarted after the operator has checked and eliminated the cooling system fault, and the coolant pressure has been restored to 0.6 MPa or above, the flow rate has been restored to the normal reference value, and the fluctuation range meets the requirements. This ensures the safety of the drilling process and the service life of the equipment.

[0031] In some embodiments, the mining anchor bolt support device 100 further includes a second monitoring component (not shown in the figure). The second monitoring component is disposed on the anchor hole drilling component 2 and is used to monitor the driving pressure and feed pressure of the drill box 21. In a second state, if the driving pressure of the drill box 21 increases by 4 MPa or more within 3 seconds, and the feed pressure of the drill box 21 increases by 4 MPa or more, the drill box 21 drives the drill rod 22 to retract a preset distance in the borehole and reciprocate within a preset range until the feed pressure is less than 3 MPa, at which point the anchor hole drilling component 2 resumes drilling operations. Specifically, the second monitoring component can be a pressure sensor disposed on the drill box 21. The second monitoring component monitors the driving pressure and feed pressure of the drill box 21. In the second state, the second monitoring component continuously collects the driving pressure and feed pressure data of the drill box 21 and compares them in real time with a preset normal operating pressure reference value. When the driving pressure of drill box 21 increases by 4 MPa or more compared to the baseline value within a continuous 3-second monitoring cycle, and the feed pressure of drill box 21 also increases by 4 MPa or more within the same 3-second cycle, it is determined that there is a serious abnormal resistance in the borehole (such as the drill rod 22 encountering hard rock interlayers, rock powder accumulation causing stuck drill, or local blockage due to borehole wall collapse).

[0032] At this point, to prevent the drill rod 22 from bending due to overload, the drill bit from chipping, or the drive mechanism of the drill box 21 from being damaged, the drill box 21 is first controlled to stop its feeding action, while the drill rod 22 is kept rotating. The drill box 21 is driven to move the drill rod 22 back up a preset distance along the borehole axis. Then, the drill rod 22 is controlled to move back and forth slightly within a preset range between the end point of the retraction and the original drilling position. Through the coordination of rotation and reciprocating motion, the rock powder accumulation is loosened, the local resistance of the hard rock interlayer is broken, and the blockage in the borehole is assisted in being discharged. During this process, the second monitoring component continuously monitors the feed pressure changes at high frequency. When the feed pressure is detected to drop below 3MPa (i.e., the abnormal resistance is relieved), the control system automatically issues a command, and the anchor hole drilling component 2 immediately resumes normal drilling operation. The drill box 21 drives the drill rod 22 to continue feeding according to the original set parameters, ensuring the continuity and safety of the anchor hole drilling.

[0033] In some embodiments, the second state includes a first sub-state and a second sub-state. In the first sub-state, when both the feed pressure and the drive pressure are less than 3 MPa, the anchor hole drilling assembly 2 resumes drilling operations. In the second sub-state, when the feed pressure is less than 3 MPa and the drive pressure is greater than 3 MPa, the anchor hole drilling assembly 2 stops drilling operations. Specifically, in the first sub-state, when the drill box 21 drives the drill rod 22 to retract a preset distance within the borehole and reciprocate within a preset range until the feed pressure is less than 3 MPa, and the second monitoring assembly detects that the drive pressure is also less than 3 MPa, it indicates that the abnormal resistance within the borehole (such as rock powder accumulation, hard rock interlayer jamming, etc.) has been completely resolved, and the resistance to the rotation and feed of the drill rod 22 has returned to the normal working range. At this time, the control system will automatically terminate the adaptive protection action, and the anchor hole drilling assembly 2 will resume operations according to the originally set drilling parameters. The drill box 21 drives the drill rod 22 to continue to feed steadily, ensuring the continuity of anchor hole drilling.

[0034] In the second sub-state, when the drill box 21 drives the drill rod 22 to retract a preset distance within the borehole and reciprocate within a preset range until the feed pressure is less than 3 MPa, but the second monitoring component detects that the driving pressure is still greater than 3 MPa, it indicates that the drill rod 22 is still experiencing significant resistance during rotation. This may indicate unresolved issues such as drill bit jamming, rock powder entanglement on the drill rod 22, or partial collapse of the borehole wall. If drilling is resumed blindly at this point, the drill rod 22 may experience torque overload, bending deformation, or even damage to the drive mechanism of the drill box 21 due to excessive rotational resistance. Therefore, the anchor hole drilling component 2 immediately stops all drilling-related actions and simultaneously issues an alarm signal to prompt operators to troubleshoot the problem on-site (such as cleaning the entanglement on the drill rod 22, checking the drill bit condition, and addressing any collapsed areas in the borehole). Drilling operations are restarted only after the driving pressure drops below 3 MPa and both pressure parameters return to normal.

[0035] In some embodiments, the preset distance is 35mm-45mm. Specifically, the preset distance can be any of 35mm, 37mm, 39mm, 41mm, 43mm, and 45mm. Preferably, the preset distance is 40mm. During drilling, abnormal resistance (stuck drill bit, rock powder accumulation, hard rock interlayers) is mostly concentrated in the working area of ​​30-40mm around the drill bit. A retraction distance of 35mm-45mm can ensure that the drill bit is completely removed from the resistance source. When the retraction distance is too short (<35mm), the reciprocating movement is limited, making it difficult to fully loosen the rock powder accumulation or break the local resistance of the hard rock interlayer, resulting in a longer adaptive processing cycle. When the retraction distance is too long (>45mm), although the unblocking effect is slightly improved, the time cost of reciprocating movement will increase, and the drill rod 22 may shake due to disengagement from the borehole wall support, which will affect the stability of subsequent drilling.

[0036] In some embodiments, the preset range is 15mm-25mm. Specifically, the preset range can be any one of 15mm, 17mm, 19mm, 21mm, 23mm, and 25mm. Preferably, the preset range is 20mm. This allows the front end of the reciprocating stroke of the drill rod 22 to reach the original drilling position, while the rear end does not exceed the retraction endpoint. Through small forward and backward tamping movements, the accumulated rock powder can be fully loosened and the local resistance of hard rock can be broken. At the same time, it avoids the reciprocating range being too small (<15mm) leading to incomplete unblocking, or too large (>25mm) causing ineffective action, thereby making the setting of the mining anchor bolt support device 100 more reasonable.

[0037] In some embodiments, the anchor hole drilling assembly 2 further includes a collection seat 3, which is disposed on the frame 1 and located above the drill box 21. The collection seat 3 has a through hole extending through the collection seat 3 along the height direction of the frame 1. The drill rod 22 passes through the through hole and is installed in the tunnel. The collection seat 3 is used to collect the coolant flowing out of the drill rod 22. Specifically, as Figure 3 and Figure 4 As shown, the anchor hole drilling assembly 2 also includes a collection seat 3, which is detachably installed on the upper part of the frame 1. The collection seat 3 has a through hole that runs through the collection seat 3 in the vertical direction. The drill bit of the drill rod 22 is movably inserted into the through hole of the collection seat 3, thereby collecting the coolant flowing back into the drill rod 22 through the collection seat 3.

[0038] During drilling operations, coolant is delivered downwards to the drill bit through the cooling holes inside the drill rod 22. After cooling and lubrication are completed, some coolant will flow back along the outer wall of the drill rod 22 or through the cooling holes. Since the collection seat 3 is located above the drill box 21 and is arranged around the drill rod 22, the backflowing coolant will be intercepted by the cavity structure of the collection seat 3, preventing it from dripping directly onto the power mechanism, electrical control components, or guide structure of the frame 1 of the drill box 21.

[0039] In some embodiments, the mining anchor support device 100 further includes a guide plate 4. An opening is provided on one side of the collecting seat 3, and the guide plate 4 is disposed on the collecting seat 3 through the opening. The guide plate 4 extends downwards and is inclined in a direction away from the collecting seat 3. Specifically, as... Figure 3 and Figure 4 As shown, the left side of the collection seat 3 has an opening, and the guide plate 4 has an overall inclined extension structure from top to bottom. The upper end of the guide plate 4 is seamlessly connected to the edge of the opening of the collection seat 3 (it can be sealed by a gasket or welding to prevent coolant from leaking from the joint). The lower end is tilted to the left in a direction away from the body of the collection seat 3. The tilt angle is optimized to 30°-45°. This angle can ensure that the coolant flows quickly and smoothly under the action of gravity, avoiding liquid accumulation and preventing the coolant from splashing due to excessive flow.

[0040] During operation, the coolant collected by the collection seat 3 flows along its inner cavity to the installation opening, and then flows smoothly along the inclined surface of the guide plate 4, finally being accurately guided into the collection tank, guide pipe or coolant recovery system below. This prevents coolant from dripping or splashing onto equipment parts such as the frame 1, drill box 21, and electrical control components. It not only protects equipment parts from coolant corrosion, but also realizes centralized recycling and reuse of coolant, while keeping the roadway working environment clean and dry, further improving the operational safety and practicality of the mine anchor bolt support device 100.

[0041] In some embodiments, the mining anchor bolt support device 100 further includes a rotating frame 5, which is rotatably connected to the frame 1, and the anchor hole drilling assembly 2 is mounted on the rotating frame 5. Specifically, as Figures 1-2 As shown, the rotating frame 5 is mounted on the frame 1 and has the ability to rotate around the axial direction of the frame 1. The anchor hole drilling assembly 2 is mounted on the rotating frame 5, so that the anchor hole drilling assembly 2 is mounted on the frame 1 through the rotating frame 5.

[0042] In some embodiments, the mining anchor bolt support device 100 further includes an anchoring agent filling assembly 6 and an anchor bolt installation assembly 7, both of which are mounted on the rotating frame 5. The anchor hole drilling assembly 2, the anchoring agent filling assembly 6, and the anchor bolt installation assembly 7 are arranged circumferentially around the frame 1. Specifically, as Figure 1 and Figure 2 As shown, the anchor hole drilling assembly 2, the anchoring agent filling assembly 6, and the anchor bolt installation assembly 7 are evenly arranged at certain intervals along the circumference of the rotating frame 5. During operation, the rotating frame 5 can drive the above three components to move sequentially to a preset position (such as the anchoring point in the area to be anchored).

[0043] During operation, the rotating frame 5 can drive the three major components to move sequentially to the designated anchoring points in the area to be anchored according to the preset support process, realizing rapid switching between components. After the anchor hole drilling component 2 completes the anchor hole drilling, the rotating frame 5 drives it to leave the work position, and simultaneously rotates the anchoring agent filling component 6 to the front of the anchor hole to complete the quantitative filling of the anchoring agent. Then the rotating frame 5 continues to rotate, switching the anchor bolt installation component 7 to the work position to realize the implantation and fastening of the anchor bolt. There is no need for manual handling or adjustment of the position of each component, which greatly shortens the process connection time. This not only improves the overall operation efficiency of anchor bolt support, but also enhances the operational flexibility of the equipment under different roadway environments and different anchoring spacing conditions. At the same time, it ensures the coaxiality and operation accuracy of the three major processes of anchor hole drilling, anchoring agent filling and anchor bolt installation, further improving the construction quality of anchor bolt support and the operation efficiency and operational flexibility of the equipment.

[0044] It is worth noting that the rotation of the rotating frame 5 and the movement of the drill box 21 can be driven by a motor or a hydraulic telescopic rod. The mining anchor bolt support device 100 of this embodiment will not be described in detail.

[0045] In addition, one embodiment of the present invention provides a hydraulic anchor bolt drilling rig, which includes the mining anchor bolt support device 100 provided in any of the above embodiments.

[0046] It should be noted that the hydraulic anchor drilling rig provided in this application embodiment has the same implementation principle and technical effect as the aforementioned mine anchor support device 100 embodiment. For the sake of brevity, any parts not mentioned in the hydraulic anchor drilling rig embodiment can be referred to the corresponding content in the aforementioned mine anchor support device 100 embodiment.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, 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. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0051] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A mining anchor bolt support device, characterized in that, include: frame; An anchor hole drilling assembly includes a drill box and a drill rod. The drill box is mounted on a frame and is movable relative to the frame along the height direction of the frame. The drill rod is mounted on the drill box. The drill box drives the drill rod to rotate about its axial direction, and the drill box also drives the drill rod to move about the drill rod. Cooling holes are adapted to allow coolant to flow in, so that the coolant is sprayed out through the cooling holes to cool the drill rod. The anchor hole drilling assembly has a first state and a second state. In the first state, when at least one of the pressure of the coolant in the cooling hole and the flow rate of the coolant in the cooling hole is lower than a preset value, the anchor hole drilling assembly stops drilling. In the second state, when the driving pressure of the drill box and / or the feed pressure of the drill box is higher than a preset value, the drill box drives the drill rod to retract a preset distance in the borehole and reciprocate within a preset range until the feed pressure is lower than the preset value, at which point the anchor hole drilling assembly resumes drilling.

2. The mining anchor bolt support device according to claim 1, characterized in that, It also includes a first monitoring component, which is installed on the anchor hole drilling component. The first monitoring component is used to monitor the pressure and flow rate in the cooling hole. In the first state, when the first monitoring component detects that the pressure of the coolant in the cooling hole is lower than 0.6 MPa, and / or when the first monitoring component detects that the flow rate of the coolant in the cooling hole decreases by more than 30% within three seconds, the anchor hole drilling component stops drilling.

3. The mining anchor bolt support device according to claim 1, characterized in that, It also includes a second monitoring component, which is installed on the anchor hole drilling assembly. The second monitoring component is used to monitor the driving pressure of the drill box and the feed pressure of the drill box. In the second state, if the driving pressure of the drill box increases by 4 MPa or more within 3 seconds, and the feed pressure of the drill box increases by 4 MPa or more, the drill box drives the drill rod to retract a preset distance in the borehole and reciprocate within a preset range until the feed pressure is less than 3 MPa, and the anchor hole drilling assembly resumes drilling operation.

4. The mining anchor bolt support device according to claim 3, characterized in that, The second state includes a first sub-state and a second sub-state. In the first sub-state, when both the feed pressure and the driving pressure are less than 3 MPa, the anchor hole drilling assembly resumes drilling operations. In the second sub-state, when the feed pressure is less than 3 MPa and the driving pressure is greater than 3 MPa, the anchor hole drilling assembly stops drilling operations.

5. The mining anchor bolt support device according to claim 1, characterized in that, The preset distance is 35mm-45mm, and the preset range is 15mm-25mm.

6. The mining anchor bolt support device according to claim 1, characterized in that, The anchor hole drilling assembly also includes a collection seat, which is disposed on the frame and located above the drill box. The collection seat has a through hole that extends through the collection seat along the height direction of the frame. The drill rod passes through the through hole and is inserted into the roadway. The collection seat is used to collect the coolant flowing out of the drill rod.

7. A hydraulic anchor bolt drilling rig, characterized in that, Includes the mining anchor support device as described in any one of claims 1 to 6.

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