A coal face wall reinforcing grouting device
By employing a multi-layered stirring roller and alternating meshing gear stirring mechanism in the coal face reinforcement grouting device, the problem of uneven slurry mixing was solved, the strength and safety of the coal face consolidation were improved, and the stable operation of the equipment was ensured through an automated water shortage early warning system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 昭通市昭阳区煤炭管理所
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-04
AI Technical Summary
In existing coal face reinforcement devices, uneven slurry mixing leads to large differences in the strength of the coal face consolidation body, and there is still a risk of spalling in some areas.
The mixing mechanism, driven by multi-layer stirring rollers and alternating meshing gears, ensures uniform mixing of the slurry and provides automated water shortage warning through water level sensors and warning mechanisms to prevent the slurry from drying out.
It improves the uniformity of slurry mixing, enhances the overall strength of the coal wall consolidation, reduces the risk of spalling, and realizes automation and safety in the grouting process.
Smart Images
Figure CN224592125U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety equipment technology for coal mining, and in particular to a grouting device for reinforcing the coal face in a coal mining face. Background Technology
[0002] The stability of the coal face is the core guarantee for safe production in coal mines. Affected by geological structure, coal seam occurrence conditions and mining disturbances, the coal face is prone to hidden dangers such as spalling and roof collapse, which seriously threaten the safety of workers and mining efficiency. Grouting reinforcement device is a key technology to solve this problem. By injecting cement grout, chemical grout, etc. into the cracks of the coal face, a solidified body is formed to enhance the strength of the coal body.
[0003] The existing technology has the following problems: Traditional equipment uses a single-shaft mixing structure, which makes the slurry prone to cement particle settling and uneven mixing. This results in large differences in the strength of the coal wall consolidation after grouting, and there is still a risk of spalling in some areas. Utility Model Content
[0004] The main purpose of this utility model is to provide a grouting device for reinforcing the coal face in coal mining operations, which can effectively solve the problem of uneven grout mixing affecting the reinforcement effect.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A coal face reinforcement grouting device includes a mobile installation platform, a support frame on the top of the mobile installation platform, a mixing tank fixedly connected to the top of the support frame, a mixing cover on the top of the mixing tank, a mixing shaft rotatably connected inside the mixing cover, multiple mixing rollers on the outer periphery of the mixing shaft, a mixing mechanism on the top of the mixing cover, a water storage tank on the top of the mobile installation platform, and a warning mechanism on the outside of the water storage tank. The stirring mechanism includes a gear ring and a gear. The outer side of the gear ring is rotatably connected to the top of the stirring cover. A connecting frame is fixedly connected to the top of the gear ring. A half gear is fixedly connected to the bottom of the connecting frame. The outer side of the gear is fixedly connected to the top of the stirring shaft. The warning mechanism includes a water level sensor and a mounting housing. The mounting housing is fixedly connected to the top of the water tank on its outer side. A warning light is fixedly connected to the top of the mounting housing. A second motor is installed inside the mounting housing. A cam is fixedly connected to the output end of the second motor. A rotating rod is rotatably connected inside the mounting housing. A spring is fixedly connected to the outer side of the rotating rod. An electrode plate is installed on the outer side of the rotating rod. A fixing block is fixedly connected inside the mounting housing. An electrode plate is installed on the outer side of the fixing block.
[0006] Preferably, a grouting pump is provided on the outside of the mixing tank, and the grouting pump is fixedly connected to the top of the mobile installation platform. A feeding port is provided on the top of the mixing cover.
[0007] Preferably, a water pump is fixedly connected to the top of the water storage tank, and the output end of the water pump is fixedly connected to the top of the stirring cover.
[0008] Preferably, a mounting bracket is fixedly connected to the top of the stirring cover, a motor is fixedly connected to the top of the mounting bracket, and the top of the connecting bracket is fixedly connected to the output end of the motor.
[0009] Preferably, the gear ring and the gear mesh, and the half gear and the gear mesh.
[0010] Preferably, a water level sensor is fixedly connected to the outside of the water tank, a controller is installed inside the mounting shell, and a battery is installed inside the mounting shell.
[0011] Preferably, the cam and the rotating rod abut against each other, the first electrode plate and the second electrode plate abut against each other, and the end of the spring away from the rotating rod is fixedly connected inside the mounting housing.
[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model provides a grouting device for reinforcing the coal wall of a coal mining face. The mixing mechanism drives the mixing shaft to rotate alternately in both forward and reverse directions through the alternating meshing of the gear ring and half gear. Combined with the shearing action of the multi-layer mixing rollers, it improves the uniformity of grout mixing and prevents cement particles from settling and uneven mixing from occurring in the grout. This prevents large differences in the strength of the coal wall solidification after grouting and the risk of spalling in some areas.
[0013] 2. This utility model provides a grouting device for reinforcing the coal face in a coal mining face. A water level sensor monitors the water level in the water storage tank in real time. When the water level is lower than the threshold, the controller starts the second motor to drive the cam to rotate. The cam pushes the rotating rod to rotate, and the rotating rod drives the first electrode plate and the second electrode plate to contact each other. The warning light then sounds an alarm to prevent the grout from drying out due to lack of water. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the internal structure of the mixing tank of this utility model; Figure 3 This is a three-dimensional structural diagram of the stirring mechanism of this utility model; Figure 4 This is a three-dimensional structural diagram of the warning mechanism of this utility model; Figure 5 This is a schematic diagram of the internal three-dimensional structure of the mounting shell of this utility model.
[0015] In the diagram: 1. Mobile installation platform; 2. Support frame; 3. Mixing tank; 4. Mixing cover; 5. Mixing shaft; 6. Mixing roller; 7. Grouting pump; 8. Mixing mechanism; 80. Mounting frame; 81. Motor 1; 82. Connecting frame; 83. Gear ring; 84. Half gear; 85. Gear; 9. Water tank; 10. Water pump; 11. Warning mechanism; 110. Water level sensor; 111. Mounting housing; 112. Warning light; 113. Motor 2; 114. Cam; 115. Rotating rod; 116. Spring; 117. Electrode 1; 118. Fixing block; 119. Electrode 2; 1110. Controller; 1111. Battery; 12. Feed port. Detailed Implementation
[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0017] like Figure 1-5 As shown, a coal face reinforcement grouting device includes a mobile installation platform 1, a support frame 2 on the top of the mobile installation platform 1, a mixing tank 3 fixedly connected to the top of the support frame 2, a mixing cover 4 on the top of the mixing tank 3, a mixing shaft 5 rotatably connected inside the mixing cover 4, multiple mixing rollers 6 on the outer periphery of the mixing shaft 5, a mixing mechanism 8 on the top of the mixing cover 4, a water storage tank 9 on the top of the mobile installation platform 1, and a warning mechanism 11 on the outside of the water storage tank 9. The stirring mechanism 8 includes a gear ring 83 and a gear 85. The outer side of the gear ring 83 is rotatably connected to the top of the stirring cover 4. A connecting frame 82 is fixedly connected to the top of the gear ring 83. A half gear 84 is fixedly connected to the bottom of the connecting frame 82. The outer side of the gear 85 is fixedly connected to the top of the stirring shaft 5. It should be noted that the motor 81 drives the connecting frame 82 to rotate, and the gear ring 83 and the half gear 84 alternately mesh with the gear 85 to realize the alternating forward and reverse stirring of the stirring shaft 5.
[0018] The warning mechanism 11 includes a water level sensor 110 and a mounting housing 111. The mounting housing 111 is fixedly connected to the top of the water storage tank 9. A warning light 112 is fixedly connected to the top of the mounting housing 111. A second motor 113 is installed inside the mounting housing 111. A cam 114 is fixedly connected to the output end of the second motor 113. A rotating rod 115 is rotatably connected inside the mounting housing 111. A spring 116 is fixedly connected to the outside of the rotating rod 115. An electrode plate 117 is installed on the outside of the rotating rod 115. A fixing block 118 is fixedly connected inside the mounting housing 111. An electrode plate 119 is installed on the outside of the fixing block 118.
[0019] It should be noted that the water level sensor 110 is an ultrasonic water level sensor, the battery 1111 is a lead-acid battery, the motor 113 drives the cam 114 to rotate, pushes the rotating rod 115 to compress the spring 116, so that the electrode plate 117 contacts the electrode plate 119, and turns on the power of the warning light 112.
[0020] As shown in Figure 1, a grouting pump 7 is installed on the outside of the mixing tank 3. The grouting pump 7 is fixedly connected to the top of the mobile installation platform 1. A feeding port 12 is provided on the top of the mixing cover 4.
[0021] It should be noted that the grouting pump 7 can draw grout from inside the mixing tank 3, and the feed port 12 can add other raw materials.
[0022] like Figure 1 As shown, a water pump 10 is fixedly connected to the top of the water storage tank 9, and the output end of the water pump 10 is fixedly connected to the top of the stirring cover 4.
[0023] It should be noted that the water pump 10 can draw water from the water storage tank 9 and replenish the mixing tank 3 with a certain amount of water through the pipeline.
[0024] As shown in Figure 3, a mounting bracket 80 is fixedly connected to the top of the stirring cover 4, a motor 81 is fixedly connected to the top of the mounting bracket 80, and a connecting bracket 82 is fixedly connected to the output end of the motor 81.
[0025] It should be noted that the mounting bracket 80 provides stable support for the motor 81, and the connecting bracket 82 is fixed to the output end of the motor 81, so that the motor 81 can drive the connecting bracket 82 to rotate.
[0026] like Figure 3 As shown, the gear ring 83 and the gear 85 mesh with each other.
[0027] It should be noted that gear ring 83 and gear ring 83 mesh with gear 85 in turn, causing gear 85 to rotate in both directions.
[0028] like Figure 4 , Figure 5 As shown, a water level sensor 110 is fixedly connected to the outside of the water tank 9, a controller 1110 is installed inside the mounting shell 111, and a battery 1111 is installed inside the mounting shell 111.
[0029] It should be noted that the controller 1110 has a preset water level threshold. When the water level sensor 110 detects that the water level is lower than the threshold, it automatically triggers the motor 113 to start, realizing automated early warning. The battery 1111 is equipped with a charging interface and can be charged by a mine explosion-proof power supply.
[0030] like Figure 5As shown, cam 114 and rotating rod 115 abut against each other, electrode plate one 117 and electrode plate two 119 abut against each other, and the end of spring 116 away from rotating rod 115 is fixedly connected inside mounting housing 111.
[0031] It should be noted that the cam 114 can drive the rotating rod 115 to rotate and generate sufficient displacement to make electrode plate one 117 and electrode plate two 119 contact each other. After the warning is released, the spring 116 pulls the rotating rod 115 to reset, the electrode plate one 117 and electrode plate two 119 separate, and the warning light 112 goes out.
[0032] Working principle: The mobile installation platform 1 is moved to the designated position on the coal face, the casters are locked, and raw materials such as cement and additives are added to the mixing tank 3 through the feeding port 12. The water pump 10 is started to inject a certain amount of clean water into the mixing tank 3. The motor 81 is started to drive the mixing mechanism 8 to work. The gear ring 83 and the half gear 84 alternately mesh with the gear 85, driving the mixing shaft 5 to stir in both directions to form a uniform slurry. The grouting pump 7 is started to inject the slurry in the mixing tank 3 into the coal wall fissures through the grouting pipe. During the grouting process, the water level sensor 110 monitors the water storage in real time. When the water level in tank 9 is below the threshold, controller 1110 starts motor 113, cam 114 pushes rotating rod 115 to make electrode 117 and electrode 219 contact, and warning light 112 flashes to remind the operator to add water. After grouting is completed, motor 1 and grouting pump 7 are turned off, mixing tank 3 and grouting pipe are cleaned, controller 1110 turns off motor 113 after adding water, spring 116 pulls rotating rod 115 to reset, warning light 112 goes out, the casters are unlocked, and the equipment is transferred to the next work point or storage area.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A grouting device for reinforcing the coal face in a coal mining face, comprising a mobile installation platform (1), characterized in that: The mobile installation platform (1) is provided with a support frame (2) on top, and a mixing tank (3) is fixedly connected to the top of the support frame (2). A mixing cover (4) is provided on the top of the mixing tank (3). A mixing shaft (5) is rotatably connected inside the mixing cover (4). Multiple mixing rollers (6) are provided on the outer periphery of the mixing shaft (5). A mixing mechanism (8) is provided on the top of the mixing cover (4). A water storage tank (9) is provided on the top of the mobile installation platform (1). A warning mechanism (11) is provided on the outside of the water storage tank (9). The stirring mechanism (8) includes a gear ring (83) and a gear (85). The outer side of the gear ring (83) is rotatably connected to the top of the stirring cover (4). A connecting frame (82) is fixedly connected to the top of the gear ring (83). A half gear (84) is fixedly connected to the bottom of the connecting frame (82). The outer side of the gear (85) is fixedly connected to the top of the stirring shaft (5). The warning mechanism (11) includes a water level sensor (110) and a mounting shell (111). The outer side of the mounting shell (111) is fixedly connected to the top of the water storage tank (9). A warning light (112) is fixedly connected to the top of the mounting shell (111). A second motor (113) is installed inside the mounting shell (111). A cam (114) is fixedly connected to the output end of the second motor (113). A rotating rod (115) is rotatably connected inside the mounting shell (111). A spring (116) is fixedly connected to the outer side of the rotating rod (115). An electrode plate (117) is installed on the outer side of the rotating rod (115). A fixing block (118) is fixedly connected inside the mounting shell (111). An electrode plate (119) is installed on the outer side of the fixing block (118).
2. The coal face reinforcement grouting device according to claim 1, characterized in that: A grouting pump (7) is provided on the outside of the mixing tank (3). The grouting pump (7) is fixedly connected to the top of the mobile installation platform (1). A feeding port (12) is provided on the top of the mixing cover (4).
3. The grouting device for reinforcing the coal face in a coal mining face according to claim 1, characterized in that: A water pump (10) is fixedly connected to the top of the water storage tank (9), and the output end of the water pump (10) is fixedly connected to the top of the stirring cover (4).
4. A grouting device for reinforcing the coal face in a coal mining face according to claim 1, characterized in that: The top of the stirring cover (4) is fixedly connected to the mounting bracket (80), the top of the mounting bracket (80) is fixedly connected to the motor (81), and the top of the connecting bracket (82) is fixedly connected to the output end of the motor (81).
5. A grouting device for reinforcing the coal face in a coal mining face according to claim 1, characterized in that: The gear ring (83) meshes with the gear (85), and the half gear (84) meshes with the gear (85).
6. A grouting device for reinforcing the coal face in a coal mining face according to claim 1, characterized in that: A water level sensor (110) is fixedly connected to the outside of the water tank (9), a controller (1110) is installed inside the mounting shell (111), and a battery (1111) is installed inside the mounting shell (111).
7. A grouting device for reinforcing the coal face in a coal mining face according to claim 1, characterized in that: The cam (114) and the rotating rod (115) abut against each other, the first electrode plate (117) and the second electrode plate (119) abut against each other, and the end of the spring (116) away from the rotating rod (115) is fixedly connected inside the mounting shell (111).