A grouting device for micro fissures of mine veins

Abstract

The present application belongs to the field of water inrush crack treatment equipment in mine, and proposes a kind of grouting equipment for micro fissure of mine vein, including ground grouting station, mobile traction device and in-road support device, the mobile traction device is used to rotate and retract grouting pipe, in-road support device includes telescopic assembly, a pair of perforations for threading grouting pipe along the telescopic direction of telescopic assembly is arranged on telescopic assembly, the front end of telescopic assembly is provided with traction type righting assembly and self-adapting balance frame, traction type righting assembly is used to right the front end of grouting pipe and make grouting pipe insert into water inrush point.The present application can improve the retracting efficiency of grouting pipe in roadway by using mobile traction device to retract grouting pipe, in-road support device can quickly support grouting pipe, and using traction type righting assembly and self-adapting balance frame can facilitate workers to insert grouting pipe into water inrush point on the ground in roadway, which is conducive to improving work efficiency and shortening the treatment period of temporary water inrush crack.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of water inrush crack treatment equipment in mines, and relates to a grouting equipment for micro fissures in ore veins in mines. BACKGROUND

[0002] The treatment of water inrush cracks in mines includes advanced prevention and treatment and temporary rescue treatment. For the yet-to-be-excavated and constructed vein transportation roadway, which is the key engineering of the mine underground roadway yard, the precise directional drilling technology is very mature and is widely used in the fields of petroleum, coal, municipal administration, mine rescue and rescue, etc. Therefore, the advanced construction directional along-roadway drilling can effectively explore and grout the water inrush in the yet-to-be-excavated and constructed roadway, which will play an important role in ensuring the safety of mine construction and speeding up the construction speed. However, for the temporary water inrush problem in the process of mine construction and roadway excavation, corresponding rescue measures need to be taken on site, otherwise it will cause great obstacles to mine construction, and will have a great impact on the construction period and safety production of the mine.

[0003] For the comprehensive treatment of water inrush, on the one hand, drainage measures are combined, and on the other hand, the grouting material prepared by the ground grouting station or the grouting material prepared by the mobile grouting station is introduced into the water inrush point, and the water inrush range is gradually reduced through grouting, and finally the water is stopped. At present, the grouting operation after water inrush needs to drag a long grouting pipe in the roadway for transfer. Due to the uncertainty of the water inrush point / grouting point, the dragging and transferring of the grouting pipe often has the problems of large workload and low efficiency, especially in the case of grouting pipe return in front of and behind the water inrush point. Furthermore, for the high grouting point, workers need to temporarily set up a scaffold, then insert the end of the grouting pipe into the temporary grouting hole drilled by the drilling machine, and the grouting pipe needs to be manually held and supported for a long time, which has the problems of large operation intensity and long construction period. SUMMARY

[0004] The present application aims at the technical problems of the above-mentioned mine cracks in water inrush grouting operation, and provides a grouting equipment for micro fissures in ore veins in mines, which is reasonable in design, convenient to retract and transfer the grouting pipe, beneficial to reduce the working intensity and improve the working efficiency.

[0005] In order to achieve the above object, the technical scheme adopted by the present application is as follows: the present application provides a mine vein micro-fracture grouting equipment, which comprises a ground grouting station, the ground grouting station comprises a central control room and a cement bin, the output side of the cement bin is provided with a screw conveyor, a grout machine and a grouting pump, the supply side of the grouting pump is provided with a grouting pipe, the grouting pipe is wound on a mobile traction device, the mobile traction device comprises a rotating reel for winding and unwinding the grouting pipe, the leading side of the mobile traction device is provided with a separate in-road support device, the in-road support device comprises an extension assembly, a pair of through holes for guiding the grouting pipe along the extension direction of the extension assembly are arranged on the extension assembly, the front end of the extension assembly is provided with a traction type centralizing assembly, the traction type centralizing assembly is used for centralizing the front end of the grouting pipe and inserting the grouting pipe into a water inrush point, the lower side of the traction type centralizing assembly is provided with a self-adaptive balance frame connected with the extension assembly, and the self-adaptive balance frame is used for supporting at a position near the water inrush point.

[0006] As a preferred, the mobile traction device comprises a square base frame, the bottom of the base frame is provided with four evenly distributed casters, a first anti-collision wheel is arranged at each side edge position of the base frame, an annular mounting frame is arranged on the base frame, the rotating reel is arranged on the outer side of the mounting frame, a support frame is arranged on the inner side of the mounting frame, a handrail frame parallel to the base frame is arranged on the top of the support frame, the height interval between the handrail frame and the base frame is less than the length and width of the base frame, at least one pair of reinforcing rods are arranged on the handrail frame, and a second anti-collision wheel is arranged at both ends of the handrail frame.

[0007] As a preferred, the rotating reel comprises a rotating cylinder, a rotating support groove matched with the top support of the mounting frame is arranged on the inner wall of the rotating cylinder, a plurality of evenly distributed hinges are arranged on the top of the rotating cylinder, a downwardly turned plate buckle is arranged on the hinge, a clamping tooth is arranged on the bottom of the plate buckle, the clamping tooth is matched with an annular clamping convex arranged on the bottom edge of the rotating cylinder, and four arc-shaped handlebars spaced apart from the hinges are arranged on the top of the rotating cylinder.

[0008] As a preferred, the support frame comprises a support cylinder, a reinforcing rib plate is arranged on the side surface of the support cylinder, the reinforcing rib plate is located on the top surface of the rotating reel, the top surface of the support cylinder is inclined, the highest level of the inclined surface is used for connecting the handrail frame, the bottom of the support cylinder is supported and matched with a limiting plate arranged on the inner wall of the mounting frame, a connecting cylinder connected with the bottom of the mounting frame through vertical bolts is arranged in the support cylinder, and the bottom of the connecting cylinder and the bottom of the mounting frame are both open.

[0009] As preferred, the handrail frame comprises a U-shaped section, a round rod is arranged in the middle of the U-shaped section, a rotating block is arranged on the round rod in rotation cooperation, a Z-shaped handle is arranged on the rotating block, and a clamping groove is arranged on the support frame in cooperation with the Z-shaped handle.

[0010] As preferred, the telescopic assembly comprises a main plate and an adjusting plate, the adjusting plate comprises a slide buckle section, a brake screw is arranged on the bottom of the slide buckle section in connection with the main plate, slide plate sections are arranged on both sides of the slide buckle section, the slide plate sections are provided with first and second support plate sections with different lengths at the end away from the slide buckle section, two handle bars are arranged on the adjusting plate in up-down staggered distribution relative to the plate surface of the main plate, and the handle bars are in contact cooperation with the pipe surface of the grouting pipe.

[0011] As preferred, the main plate is provided with a plurality of anti-deformation rods at the position close to the front end, the anti-deformation rods are in U-shaped section and the U-shaped opening faces the passing path of the grouting pipe, and a friction sleeve is arranged in the middle of the anti-deformation rod.

[0012] As preferred, the traction type centralizing assembly comprises a support bearing fixedly arranged at the end of the telescopic assembly, a rotating shaft is arranged in the center of the support bearing, a swing arm is arranged in penetration cooperation at one end of the rotating shaft, two V-shaped distributed centralizing rods are arranged at both ends of the swing arm, a spring is arranged between the support bearing and the swing arm, the rotating shaft is extended out of the support bearing and the swing arm by at least 15 cm at both ends respectively, a top screw and a tail screw are arranged on the rotating shaft to limit the axial position thereof, an end cap is arranged at the tail end of the rotating shaft, a traction rope is arranged in penetration on the end cap, the part of the traction rope inside the end cap is in spiral winding with the rotating shaft, and the traction rope is in meander structure.

[0013] As preferred, the self-adaptive balance frame comprises a rotary joint arranged at the front end bottom surface of the telescopic assembly, a flow guide cone is arranged at the bottom of the rotary joint, the flow guide cone comprises a cylindrical section and a conical section, at least 4 connection holes are arranged on the side surface of the cylindrical section in radial distribution, a balance rod is arranged in the connection hole, the lengths of all balance rods in the connection holes are different, and the length of the smallest balance rod is at least greater than the distance between the center of the rotary joint and the front end of the traction type centralizing assembly.

[0014] Compared with the prior art, the application has the advantages and positive effects that:

[0015] The mine vein micro fissure grouting equipment provided by the application can improve the winding and unwinding efficiency of the grouting pipe in the roadway, reduce the interference of the grouting pipe on other equipment in the roadway, and facilitate the staff to insert the grouting pipe into the water inrush node on the ground in the roadway, thereby improving the work efficiency and shortening the rescue period of the temporary water inrush crack. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0017] Figure 1 A schematic view of the mine vein micro fissure grouting equipment provided by the embodiment;

[0018] Figure 2 A plane distribution view of the ground grouting station provided by the embodiment;

[0019] Figure 3 A perspective view of the mobile traction device and the in-roadway supporting device provided by the embodiment;

[0020] Figure 4 A Figure 3 An enlarged schematic view of the in-roadway supporting device at A;

[0021] Figure 5 A front view of the mobile traction device provided by the embodiment;

[0022] Figure 6 A Figure 5 A sectional view of the mobile traction device in G-G direction;

[0023] Figure 7 A Figure 6 An enlarged schematic view of the mobile traction device at B;

[0024] Figure 8 A bottom structure schematic view of the mobile traction device and the in-roadway supporting device;

[0025] Figure 9 A Figure 8 A sectional view of the in-roadway supporting device in F-F direction;

[0026] Figure 10 A Figure 9An enlarged view of the in-midroad support device at C;

[0027] Figure 11 A schematic view of the first and second anti-collision wheels as temporary walking wheels;

[0028] In the above figures: 1, control room; 2, cement bin; 3, screw conveyor; 4, pulper; 5, grouting pump; 6, grouting pipe; 7, mobile traction device; 71, rotating retractable frame; 711, rotating cylinder; 712, rotating support groove; 713, hinge; 714, plate buckle; 715, clamping tooth; 716, annular clamping convex; 717, arc-shaped handle bar; 72, chassis frame; 73, caster; 74, first anti-collision wheel; 75, mounting frame; 751, limiting plate; 752, open mouth; 76, support frame; 761, support cylinder; 762, inclined surface; 763, vertical bolt; 764, connecting cylinder; 765, clamping groove; 766, reinforcing rib plate; 77, handrail frame; 771, U-shaped section; 772, round rod; 773, rotating block; 774, Z-shaped handle bar; 78, reinforcing rod; 79, second anti-collision wheel; 8, in-midroad support device; 81, telescopic assembly; 811, main plate; 812, adjusting plate; 8121, sliding buckle section; 8122, sliding plate section; 8123, first support plate section; 8124, second support plate section; 8125, handle bar; 813, stop bolt; 82, perforation; 83, traction type centralizing assembly; 831, support bearing; 832, rotating shaft; 833, swing arm; 834, centralizing rod; 835, spring; 836, top bolt; 837, tail bolt; 838, traction rope; 839, end cap; 84, self-adaptive balancing frame; 841, rotating joint; 842, flow guide cone; 843, balancing rod; 85, anti-deformation rod; 86, friction sleeve. DETAILED DESCRIPTION

[0029] In order to enable persons skilled in the art to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application will be further described below in conjunction with the accompanying drawings and examples. It should be noted that the examples of the present application and the features in the examples can be combined with each other without conflict. For the convenience of description, the terms “up”, “down”, “left” and “right” appear below only represent the up, down, left and right directions consistent with the drawings themselves, and do not limit the structure.

[0030] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, and therefore, the present application is not limited to the specific examples disclosed in the following description.

[0031] Examples, such as Figures 1-11As shown, the present application provides a mine vein micro-fracture grouting equipment, the ground grouting station comprises a control room 1 and a cement bin 2, the output side of the cement bin 2 is provided with a screw conveyor 3, a pulp machine 4 and a grouting pump 5, the supply side of the grouting pump 5 is provided with a grouting pipe 6, the grouting pipe 6 is wound on a mobile traction device 7, the mobile traction device 7 comprises a rotating reel 71 for rotating the grouting pipe 6, the traction side of the mobile traction device 7 is provided with a separate in-passage support device 8, the in-passage support device 8 comprises a telescopic assembly 81, the telescopic assembly 81 is provided with a pair of through holes 82 for guiding the grouting pipe 6 along the telescopic direction of the telescopic assembly 81, the front end of the telescopic assembly 81 is provided with a traction type centralizing assembly 83, the traction type centralizing assembly 83 is used for centralizing the front end of the grouting pipe 6 and inserting the grouting pipe 6 into the water bursting point, the lower side of the traction type centralizing assembly 83 is provided with a self-adaptive balance frame 84 connected with the telescopic assembly 81, the self-adaptive balance frame 84 is used for supporting at a position near the water bursting point.

[0032] Specifically, the cement bin 2 delivers the pulp raw materials to the pulp machine 4 through the screw conveyor 3, the pulp machine 4 prepares the raw materials into grouting materials through stirring and centrifugal operation, and the grouting materials are punched into the water bursting fracture through the grouting pump 5 and the grouting pipe 6. On this basis, the present application adopts the mobile traction device 7 to move in the roadway to pull the grouting pipe 6, and the grouting pipe 6 is reeled according to the actual length of use, and the grouting pipe 6 wound on the rotating reel 71 in a spiral manner has sufficient spiral radius and cannot be blocked. This reasonable management of the grouting pipe 6 in the roadway can improve the reeling efficiency of the grouting pipe 6 in the roadway, and there is no need to lay a large area of the grouting pipe 6 on the roadway track, which reduces the interference of the grouting pipe 6 on other equipment in the roadway, especially in the case of needing to return the grouting pipe 6 in front of and behind the water bursting point.

[0033] Further, the in-roadway supporting device 8 provided by the present application can be transferred together with the mobile traction device 7, most importantly, the in-roadway supporting device 8 has supporting function and threading guiding function, and can be used as a temporary holding structure of the grouting pipe 6 under the water inrush node, for example, the grouting pipe 6 penetrates into the telescopic assembly 81 along the through hole 82, the telescopic assembly 81 can be quickly adjusted in length according to the position of the water inrush node, and the telescopic assembly 81 after adjustment is in contact with the wall of the roadway to form a triangular supporting system; the worker manually controls the traction type centralizing assembly 83 on the ground of the roadway to finely adjust the grouting pipe 6 which penetrates out of the through hole 82 at the top, so that the head end of the grouting pipe 6 is as possible as possible to be aligned with the grouting hole temporarily drilled by the drilling equipment, and after alignment, the grouting pipe 6 is continuously pushed upward along the threading direction for a distance, so that the grouting pipe 6 is relatively stably inserted into the water inrush node, and at the same time, the head end of the in-roadway supporting device 8 can be supported on the inner wall of the roadway through the self-adaptive balance frame 84, and the worker only needs to observe the overflow of grouting on the ground in the roadway, and does not need to build a scaffold or open an elevator to perform corresponding operation, which is conducive to improving work efficiency and shortening the rescue period of the temporary water inrush crack.

[0034] As Figure 3 , Figure 5 , Figure 8 and Figure 11As shown, the mobile traction device 7 provided by the present application comprises a square chassis 72, the bottom of the chassis 72 is provided with four evenly distributed casters 73, each side edge position of the chassis 72 is provided with a first anti-collision wheel 74, the chassis 72 is provided with an annular mounting bracket 75, the rotating retractable bracket 71 is arranged outside the mounting bracket 75, the inside of the mounting bracket 75 is provided with a support bracket 76, the top of the support bracket 76 is provided with a handrail bracket 77 which is parallel to the chassis 72, the height interval between the handrail bracket 77 and the chassis 72 is less than the length and width of the chassis 72 and is provided with at least one pair of reinforcing rods 78, both ends of the handrail bracket 77 are provided with a second anti-collision wheel 79, the wheel section of the second anti-collision wheel 79 is located in the same vertical plane as the first anti-collision wheel 74. Among them, the second anti-collision wheel 79 has a smaller protective span relative to the first anti-collision wheel 74, which can be applied to a roadway with an arched inner wall design, and plays a secondary anti-collision role; the chassis 72 can improve the actual ground clearance by the casters 73, which is beneficial to improve the passability in the roadway; the casters 73 are universal wheels and serve as the first walking wheels, manually pushing the handrail bracket 77 can make the mobile traction device 7 carry the grouting pipe 6 to move flexibly in the roadway; the injection section of the grouting pipe 6 is connected with the pump outlet of the grouting pump 5, the winding length of the grouting pipe 6 is retracted and released according to the actual distance between the mobile traction device 7 and the grouting pump 5, the retracting and releasing action is realized by the rotating retractable bracket 71, the rotating retractable bracket 71 and the mounting bracket 75 and the support seat can relatively rotate and move, the excess grouting pipe 6 released can be retracted by the rotating retractable bracket 71, the flexible traction and the retracting and releasing of the grouting pipe 6 can reduce the working intensity of the workers to move the grouting pipe 6, on the other hand, it avoids the grouting pipe 6 laid on the track in the roadway to affect the work of other equipment, and reduces the friction and wear of the grouting pipe 6, which is beneficial to prolong the actual service life of the grouting pipe 6.

[0035] Further, the first anti-collision wheel 74 can play a role in preventing collision when the caster 73 serves as the first walking wheel, which is beneficial to ensure the passability and safety of the device in the roadway; for the relatively narrow position in the roadway, such as the half-excavated roadway or the situation that the machine vehicle occupies the roadway, the mobile traction device 7 can be transformed by 90 degrees, that is, the first anti-collision wheel 74 and the second anti-collision wheel 79 serve as the second walking wheel, and the reinforcing rod 78 serves as the reinforcing structure of the new chassis, the footprint of the device in this mode is obviously reduced, and the center of gravity is lower, which is beneficial to improve the passability and balance in the current environment, thereby improving the transfer efficiency of the grouting pipe 6 in the roadway by the device.

[0036] As Figure 6 and Figure 7As shown, the rotary reel 71 provided by the present application comprises a rotary cylinder 711, the inner wall of the rotary cylinder 711 is provided with a rotary support groove 712 which supports the top of the mounting frame 75, the top of the rotary cylinder 711 is provided with a plurality of evenly distributed hinges 713, the hinges 713 are provided with downwardly turned plate buckles 714, the bottom of the plate buckles 714 is provided with clamping teeth 715 which cooperate with annular clamping protrusions 716 provided at the bottom edge of the rotary cylinder 711, the top of the rotary cylinder 711 is provided with four arc-shaped handle rods 717 which are spaced apart from the hinges 713. Wherein, the rotary cylinder 711 is of an I-shaped structure, each plate buckle 714 can be clamped at the edge of the annular clamping protrusion 716 by turning, and forms a winding space with the waist of the rotary cylinder 711 for the grouting pipe 6, the unit cross-sectional width of the winding space is not greater than 2 times the pipe diameter of the grouting pipe 6, thereby avoiding the grouting pipe 6 from collapsing into a ball due to gravity, which is beneficial to reduce the probability of pipe blockage, and ensures a relatively long standby length for grouting, which is beneficial to effectively drive the grouting material into the water bursting crack under the pressure of the grouting pump 5. The arc-shaped handle rod 717 can be used as a handle structure for driving the rotary cylinder 711 to perform the winding and unwinding action, and the non-electric design can reduce the power load of the in-pit grouting operation and reduce the working hardware requirements of the equipment; the rotary support groove 712 cooperates with the top surface of the mounting frame 75 to serve as one rotary support pair of the rotary cylinder 711, and the other rotary support pair is provided by the support frame 76, thereby avoiding the rotary cylinder 711 from having a large end jump problem, which is beneficial to improve the performance of the winding and unwinding grouting pipe 6.

[0037] As Figure 5 , Figure 6 and Figure 7As shown, the support frame 76 provided by the present application comprises a support cylinder 761, the side of which is provided with a reinforcing rib plate 766, which is located on the top surface of the rotary storage frame 71. The top surface of the support cylinder 761 is a slope 762, the highest level of which is used to connect the handrail frame 77. The bottom of the support cylinder 761 is supported and matched with the limiting plate 751 provided on the inner wall of the mounting frame 75. The inside of the support cylinder 761 is provided with a connecting cylinder 764 connected with the bottom of the mounting frame 75 through vertical bolts. The bottom of the connecting cylinder 764 and the bottom of the mounting frame 75 are both open 752 to avoid the accumulation of cement in the hollow position of the device. The reinforcing rib plate 766 can be used as a rotary support pair on the top surface of the rotary storage frame 71, and the mounting frame 75 clamps the rotary storage frame 71 from different directions, which has a stable rotary level and is beneficial to ensure the stability of the grouting pipe 6. The limiting plate 751 is used to support the bottom surface of the support cylinder 761, and the connecting cylinder 764 constitutes a stepped support design, which can effectively improve the stability and balance of the support frame 76 in the center of the mounting frame 75. The support frame 76, the mounting frame 75 and the rotary storage frame 71 are all designed in a cylindrical shape, which can not only obtain high structural strength, but also facilitate the storage of the grouting pipe 6 in the non-working state in the support frame 76, providing temporary storage space. The top surface of the support cylinder 761 adopts a slope 762 design, which is beneficial to improve the transfer efficiency of the device for workers on the one hand by facilitating the placement of the in-pit support device 8 and raising the holding level of the handrail frame 77 on the other hand. On the other hand, in the mode of the first anti-collision wheel 74 and the second anti-collision wheel 79 as the second walking wheel, the overall center of the device is lowered, and sufficient wheel spacing is provided, which is beneficial to improve the balance and safety of the device in this mode.

[0038] As shown in Figure 5 , Figure 6 and Figure 11 , in order to improve the space intensive performance of the device after switching the walking mode, the handrail frame 77 provided by the present application comprises a U-shaped section 771, a round rod 772 is arranged in the middle of the U-shaped section 771, a rotating block 773 is arranged on the round rod 772 and rotates with it, a Z-shaped handle 774 is arranged on the rotating block 773, and a clamping groove 765 is arranged on the support frame 76 near the handrail frame 77 and matched with the Z-shaped handle 774. In this way, the Z-shaped handle 774 can be turned to the inside of the support cylinder 761 by rotating 180 degrees around the center of the round rod 772 and the rotating block 773, thereby providing reasonable space for the new chassis to ensure the passability of the device in the mode of the first anti-collision wheel 74 and the second anti-collision wheel 79 as the walking wheel. In the unfolded state of the Z-shaped handle 774, the real-time height is higher than the highest level of the support cylinder 761, which can reach the applicable level of most people, thereby improving the practicability and utilization rate of the device.

[0039] As Figure 3 and Figure 4 shown, the telescopic assembly 81 provided by the application includes a main plate 811 and an adjusting plate 812, the adjusting plate 812 includes a sliding buckle section 8121, the bottom of the sliding buckle section 8121 is provided with a brake bolt 813 connected with the main plate 811, both sides of the sliding buckle section 8121 are provided with a sliding plate section 8122, the sliding plate section 8122 is provided with a first support plate section 8123 and a second support plate section 8124 with different lengths at an end away from the sliding buckle section 8121, the adjusting plate 812 is provided with two handle bars 8125 staggered in up and down with respect to the plate surface of the main plate 811, the handle bars 8125 are in contact and cooperation with the pipe surface of the grouting pipe 6. Among them, the brake bolt 813 includes a bolt body and a rocker welded at the bolt head end, the clamping degree of the adjusting plate 812 with the main plate 811 can be changed by operating the rocker; the adjusting plate 812 can obtain different combined lengths by front and rear sliding fit of the sliding buckle section 8121 with the main plate 811, and the adjusting plate 812 ensures that the telescopic assembly 81 has sufficient transverse span through the sliding plate section 8122, at the same time, due to the different specific support point positions of the first support plate section 8123 and the second support plate section 8124 on the ground in the roadway, one set of telescopic assembly 81 has four support points, and at least two points can support the ground in the roadway, when encountering a structure with a step position in the roadway, such as a step position formed by the track and the ground, the first support plate section 8123 and the second support plate section 8124 can both be put into support, because more triangular systems are built, the stability and reliability of the telescopic assembly 81 as the support and guide body of the grouting pipe 6 are improved. For the handle bar 8125, on the one hand, it can be used as a handheld point for adjusting the device, and as a handheld point for assisting the telescopic assembly 81 to maintain a stable angle on the ground in the roadway, on the other hand, it can protect the grouting pipe 6 passing through the telescopic assembly 81, preventing the grouting pipe 6 from obviously retreating under the influence of non-grouting pressure.

[0040] Because the grouting pipe 6 has a certain gravity during grouting, in order to prevent the grouting pipe 6 from obviously retreating after being lifted to the water inrush node, the main plate 811 is provided with a plurality of anti-deformation rods 85 distributed along the length direction at a position close to the front end thereof, the anti-deformation rod 85 is in a U shape and the U-shaped mouth faces the passing path of the grouting pipe 6, and the middle of the anti-deformation rod 85 is provided with a friction sleeve 86. By adopting the design of a plurality of anti-deformation rods 85, a plurality of limiting protections are formed on the pipe body of the grouting pipe 6, and the friction sleeve 86 is used to increase the resistance of the automatic retreat of the grouting pipe 6, thereby improving the grouting efficiency of the water inrush crack.

[0041] As Figure 4 , Figure 8 and Figure 10As shown, the traction type righting assembly 83 provided by the present application comprises a support bearing 831 fixedly arranged at the end of the telescopic assembly 81, the center of the support bearing 831 is provided with a rotating shaft 832, one end of the rotating shaft 832 is provided with a swing arm 833 penetratingly matched therewith, both ends of the swing arm 833 are provided with two V-shaped distributed righting rods 834, the support bearing 831 and the swing arm 833 are provided with a spring 835 therebetween, both ends of the rotating shaft 832 respectively extend out of the support bearing 831 and the swing arm 833 by at least 15 cm, the rotating shaft 832 is provided with a top bolt 836 and a tail bolt 837 for limiting the axial position thereof, the tail end of the rotating shaft 832 is provided with an end cap 839, the end cap 839 is penetratingly provided with a traction rope 838, the part of the traction rope 838 inside the end cap 839 is spirally wound with the rotating shaft 832, and the traction rope 838 is in a meandering structure. Wherein, the support bearing 831 is used for reducing the rotating resistance of the rotating shaft 832; the end cap 839 and the rotating shaft 832 can relatively rotate within a certain angle, such as adopting the design of a rotary joint; the rotation of the rotating shaft 832 is realized by the relative change of the winding-in end and the winding-out end of the traction rope 838, so as to change the swing angle of the swing arm 833, make the actual direction of the grouting pipe 6 drawn out from between the two righting rods 834 appear fine adjustment, and when the traction rope 838 is manually operated to drive the spring 835 to compress, the actual height of the head end of the grouting pipe 6 can be fine adjusted, and on the basis of adjusting the angle of the grouting pipe 6, the operation of inserting the grouting pipe 6 into the water bursting point can be completed by the staff on the ground in the roadway, without the need to build a scaffold and with the help of lifting equipment.

[0042] Further, the front end of the rotating shaft 832 extending out of the swing arm 833 can be used as another clamping structure of the grouting pipe 6, and together with the two righting rods 834, a three-dimensional clamping condition is formed, so as to avoid the grouting pipe 6 from frequently appearing the situation of lifting head due to the influence of water bursting before insertion, thereby improving the efficiency of inserting the grouting pipe 6 into the water bursting borehole.

[0043] Since the shape of the inner wall of the roadway is different at different positions and different construction stages, especially relatively simple and rough at the initial construction stage, in order to ensure that the in-roadway support device 8 establishes a triangular support system with the roadway, the righting assembly 83 is provided with a telescopic assembly 81, which is arranged in the in-roadway support device 8 and is used for adjusting the length of the in-roadway support device 8. Figure 4 Figure 8 and Figure 10 ​As shown, the self-adaptive balance frame 84 provided by the present application comprises a rotary joint 841 arranged on the front end bottom surface of the telescopic assembly 81, the bottom of the rotary joint 841 is provided with a flow guide cone 842, the flow guide cone 842 comprises a cylindrical segment and a conical segment, the side surface of the cylindrical segment is provided with at least 4 radially distributed connecting holes, a balance rod 843 is arranged in the connecting hole, the lengths of the balance rods 843 in all the connecting holes are different, and the length of the smallest balance rod 843 is at least greater than the distance between the center of the rotary joint and the front end of the traction type righting assembly 83. Wherein, the rotary joint 841 provides the hardware condition of relative rotation for the self-adaptive balance frame 84 and the telescopic assembly 81, when the in-passage supporting device 8 is placed on the inner wall of the roadway, the balance rods 843 actually participating in the support can be rotated and replaced according to the on-site support environment until a relatively stable support foundation is obtained; for the grouting operation after the water inrush occurs, the self-adaptive balance frame 84 can float within a certain support range under the action of external force to avoid the maximum pressure and impact force, and for the grouting pipe 6 inserted into the water inrush crack, only the sufficient insertion length needs to be ensured to continue the operation. The flow guide cone 842 in the center of the self-adaptive balance frame 84 can guide the water inrush and the overflowed cement slurry, and provide a guiding force for the replacement of the balance rod 843, so as to facilitate the self-adaptive balance frame 84 to automatically avoid the position with larger impact force, and the entire in-passage supporting device 8 and the roadway can establish a relatively stable support system.

[0044] The above is only the preferred embodiment of the present application, and is not intended to limit the other forms of the present application. Any person skilled in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments still belongs to the protection scope of the technical scheme of the present application.

Claims

1. A mine vein microfracture grouting equipment, comprising a ground grouting station, the ground grouting station comprises a central control room and a cement bin, the output side of the cement bin is provided with a screw conveyor, a grout machine and a grouting pump, the supply side of the grouting pump is provided with a grouting pipe, characterized in that, The grouting pipe is wound on the mobile traction device, the mobile traction device comprises a rotating reel for winding and unwinding the grouting pipe, a lane support device which is independent of the mobile traction device is arranged on the traction side of the mobile traction device, the lane support device comprises an extension assembly, a pair of through holes for guiding the grouting pipe along the extension direction of the extension assembly are arranged on the extension assembly, a traction type centralizing assembly is arranged at the front end of the extension assembly, the traction type centralizing assembly is used for centralizing the front end of the grouting pipe and inserting the grouting pipe into the water inrush point, an adaptive balance frame connected with the extension assembly is arranged below the traction type centralizing assembly, and the adaptive balance frame is used for supporting at a position near the water inrush point.

2. The mine vein micro-fracture grouting equipment according to claim 1, characterized in that, The mobile traction device comprises a square base frame, four evenly distributed casters are arranged on the bottom of the base frame, a first anti-collision wheel is arranged at each side edge of the base frame, an annular mounting frame is arranged on the base frame, the rotating reel is arranged on the outer side of the mounting frame, a support frame is arranged on the inner side of the mounting frame, a handrail frame parallel to the base frame is arranged on the top of the support frame, the height interval between the handrail frame and the base frame is less than the length and width of the base frame, at least one pair of reinforcing rods are arranged on the handrail frame, and a second anti-collision wheel is arranged at each end of the handrail frame.

3. The mine vein micro-fracture grouting equipment according to claim 2, characterized in that, The rotating reel comprises a rotating cylinder, a rotating support groove matched with the top support of the mounting frame is arranged on the inner wall of the rotating cylinder, a plurality of evenly distributed hinges are arranged on the top of the rotating cylinder, a downwardly turned plate buckle is arranged on the hinge, a clamping tooth is arranged on the bottom of the plate buckle, the clamping tooth is matched with an annular clamping convex arranged on the bottom edge of the rotating cylinder, and four arc-shaped handlebars spaced apart from the hinges are arranged on the top of the rotating cylinder.

4. The mine vein micro-fracture grouting equipment according to claim 3, characterized in that, The support frame comprises a support cylinder, a reinforcing rib plate is arranged on the side surface of the support cylinder, the reinforcing rib plate is located on the top surface of the rotating reel, the top surface of the support cylinder is inclined, the highest level of the inclined surface is used for connecting the handrail frame, the bottom of the support cylinder is supported and matched with a limiting plate arranged on the inner wall of the mounting frame, a connecting cylinder connected with the bottom of the mounting frame through vertical bolts is arranged in the support cylinder, and the bottom of the connecting cylinder and the bottom of the mounting frame are both open.

5. The mine vein micro-fracture grouting equipment according to claim 4, characterized in that, The handrail frame comprises a U-shaped section, a round rod is arranged in the middle of the U-shaped section, a rotating block matched with the rotation of the round rod is arranged on the round rod, a Z-shaped handlebar is arranged on the rotating block, and a clamping groove matched with the Z-shaped handlebar is arranged on the support frame close to the handrail frame.

6. The equipment for grouting of microfractures of a mine vein according to any one of claims 1 to 5, characterized in that, The extension assembly comprises a main plate and an adjusting plate, the adjusting plate comprises a sliding buckle section, a brake bolt connected with the main plate is arranged on the bottom of the sliding buckle section, a sliding plate section is arranged on each side of the sliding buckle section, a first supporting plate section and a second supporting plate section with different lengths are arranged at the end away from the sliding buckle section of the sliding plate section, two grip rods staggered and distributed above and below the plate surface of the main plate are arranged on the adjusting plate, and the grip rods are in contact with the pipe surface of the grouting pipe.

7. The mine vein micro-fracture grouting equipment according to claim 6, characterized in that, The main plate is provided with a plurality of anti-deformation rods distributed along the length direction at the position close to the front end, the anti-deformation rods are in U shape and the U-shaped opening faces the penetrating path of the grouting pipe, and the middle of the anti-deformation rods is provided with a friction sleeve.

8. The mine vein micro-fracture grouting equipment according to claim 1, characterized in that, The traction type righting assembly comprises a support bearing fixedly arranged at the end of the telescopic assembly, the center of the support bearing is provided with a rotating shaft, one end of the rotating shaft is provided with a swing arm penetratingly matched therewith, both ends of the swing arm are provided with two V-shaped distributed righting rods, a spring is arranged between the support bearing and the swing arm, both ends of the rotating shaft respectively extend out of the support bearing and the swing arm by at least 15 cm, the rotating shaft is provided with a top bolt and a tail bolt for limiting the axial position thereof, the tail end of the rotating shaft is provided with an end cap, the end cap is penetratingly provided with a traction rope, the part of the traction rope inside the end cap is spirally wound with the rotating shaft, and the traction rope is in a meander structure.

9. The mine vein micro-fracture grouting equipment according to claim 1, characterized in that, The self-adaptive balance frame comprises a rotating joint arranged at the bottom surface of the front end of the telescopic assembly, the bottom of the rotating joint is provided with a flow guide cone, the flow guide cone comprises a cylindrical segment and a conical segment, the side surface of the cylindrical segment is provided with at least four radially distributed connecting holes, the connecting holes are provided with balance rods, the lengths of the balance rods in all the connecting holes are different, and the length of the smallest balance rod is at least greater than the distance between the center of the rotating joint and the front end of the traction type righting assembly.

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