A coal mine air leakage blocking material performance testing device

Abstract

The utility model relates to the technical field of mine fire prevention, especially to a coal mine air leakage plugging material performance testing device, including the chassis and performance test box body, be provided with rotating structure on the chassis, be provided with elevating system on the chassis, performance test box body establishes on rotating structure, through the coordinated action of the synergetic effect of electric push rod and adjusting frame through the rotating structure that is provided, realizes the accurate positioning of performance test box observation angle, and its unique rotating wheel and rotating frame abutment design ensures the stability of angle adjustment, the combination transmission system of universal coupling and speed reducer guarantees the high efficiency of power transmission, and also realizes the accurate control of rotating speed through multistage transmission, and the stable effect of the stable action of the limit wheel is formed to a complete motion constraint system that rotating wheel drives the operation cooperation of rotating frame, makes the test box keep firm at any angle.

Description

Technical Field

[0001] This utility model relates to the field of mine fire prevention technology, and in particular to a performance testing device for coal mine air-sealing materials. Background Technology

[0002] Coal mining creates large areas of goaf, and air leakage in goaf can easily lead to spontaneous combustion of coal. Leak sealing is one of the effective means to prevent spontaneous combustion of coal. Coal mine leak sealing materials are special materials used to seal cracks and pores in coal seams or roadways to prevent air (or gas) from leaking through cracks. Research results on leak sealing materials are already very rich. Before a material is put into use, its leak sealing performance must be tested.

[0003] Currently, corrosion resistance testing of leak-sealing materials has significant limitations. Traditional testing devices are not easy to rotate and do not allow for recording of the corrosion process from all angles, thus failing to fully reflect the corrosion behavior characteristics of the material in three-dimensional space. This blind spot directly affects the accurate assessment of the material's corrosion resistance, especially for composite materials with significant anisotropy or leak-sealing layers with gradient structures. The analysis of key mechanisms such as interface corrosion and selective dissolution is difficult to conduct in depth due to the lack of continuous data support. Utility Model Content

[0004] The purpose of this utility model is to provide a performance testing device for coal mine air-sealing materials, so as to solve the problems mentioned in the background art that the existing testing devices are not easy to rotate, not easy to record the corrosion process in all directions, and cannot fully reflect the corrosion behavior characteristics of materials in three-dimensional space.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a performance testing device for coal mine air-sealing materials, comprising a base frame and a performance testing chamber body, wherein a rotating structure is provided on the base frame, a lifting structure is provided on the base frame, and the performance testing chamber body is disposed on the rotating structure;

[0006] The rotating structure includes a fixed frame, a rotating wheel, a rotating frame, a limiting wheel, an adjusting frame, a rotating shaft, a rotating wheel, an electric push rod, a reducer, a first motor, a first universal coupling, and a second universal coupling. The fixed frame is mounted on the base frame. The rotating wheel is movably mounted on the fixed frame. The rotating frame is movably mounted on the rotating wheel. The limiting wheel is movably mounted on the fixed frame and abuts against the rotating frame. The adjusting frame is movably mounted on the fixed frame. The rotating shaft is movably mounted on the adjusting frame. The rotating wheel is mounted on the rotating shaft. The electric push rod is movably mounted on the fixed frame, and its driving end is movably connected to the adjusting frame. The reducer is mounted on the fixed frame. The first motor is mounted on the base frame. One end of the first universal coupling is mounted on the driving end of the first motor, and the other end of the first universal coupling is connected to the input end of the reducer. One end of the second universal coupling is mounted on the output end of the reducer, and the other end of the second universal coupling is connected to the rotating shaft.

[0007] Preferably, the rotating frame is provided with a groove that matches the performance test box body, and the fixed frame is provided with reinforcing ribs.

[0008] Preferably, the first motor is fixed to the base frame by bolts, and the base frame is provided with pads.

[0009] Preferably, the lifting structure includes a connecting plate, a guide rod, a lifting plate, a rotating frame, a first pulley, a threaded rod, a second motor, a second pulley, and a transmission belt. The connecting plate is mounted on the base frame, the guide rod is movably disposed on the connecting plate, the lifting plate is mounted on the guide rod, the rotating frame is movably disposed on the connecting plate, the first pulley is mounted on the rotating frame, the threaded rod is movably disposed on the rotating frame and is movably connected to the lifting plate, the second motor is mounted on the connecting plate, the second pulley is mounted on the second motor, and the transmission belt is disposed on the first pulley and the second pulley.

[0010] Preferably, the rotating frame is provided with reinforcing ribs, and the guide rod is provided with several.

[0011] Preferably, the second motor is fixed to the connecting plate by bolts, and the guide rod is adapted to the connecting plate.

[0012] Preferably, there are several rotating wheels and several limiting wheels.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This coal mine air-sealing material performance testing device, through its rotating structure and the coordinated action of an electric push rod and an adjusting frame, achieves precise positioning of the observation angle of the performance testing box. Its unique rotating wheel and rotating frame abutment design ensures the stability of angle adjustment. The combined transmission system of a universal coupling and a reducer ensures both high efficiency in power transmission and precise speed control through multi-stage transmission. The rotating wheel driving the rotating frame, combined with the stabilizing effect of the limit wheel, forms a complete motion constraint system, ensuring the test box remains stable at any angle. The entire mechanism integrates the advantages of linear drive and rotary transmission, achieving stepless angle adjustment while ensuring absolute stability during observation through mechanical self-locking characteristics, fully demonstrating the superior performance and reliability of precision mechanical design in testing equipment.

[0015] 2. This coal mine air-sealing material performance testing device, through its lifting structure, achieves smooth operation of the performance testing chamber height adjustment via a precise engagement between a second motor-driven pulley and a transmission belt. Its threaded rod transmission system converts rotational motion into precise linear displacement, ensuring millimeter-level positioning accuracy during lifting. The sliding engagement between the guide rod and the lifting plate effectively suppresses lateral displacement during lifting, keeping the testing chamber vertically stable. The entire mechanism, through the inherent reliability of mechanical transmission, achieves stepless height adjustment while also possessing advantages such as high load-bearing capacity, low operating noise, and long-term maintenance-free operation. It fully adapts to the personalized needs of operators of different body types, providing a highly customizable and stable operating platform for testing work. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0018] Figure 3 This is a schematic diagram of the connection plate and guide rod mating structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the cooperation structure between the fixing frame and the adjusting frame of this utility model;

[0020] In the diagram: 1. Base frame; 2. Rotating structure; 201. Fixed frame; 202. Rotating wheel; 203. Rotating frame; 204. Limiting wheel; 205. Adjusting frame; 206. Rotating shaft; 207. Rotating wheel; 208. Electric push rod; 209. Reducer; 210. First motor; 211. First universal coupling; 212. Second universal coupling; 3. Lifting structure; 301. Connecting plate; 302. Guide rod; 303. Lifting plate; 304. Rotating frame; 305. First pulley; 306. Threaded rod; 307. Second motor; 308. Second pulley; 309. Transmission belt; 4. Performance test chamber body. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a coal mine air-sealing material performance testing device, including a base frame 1 and a performance testing box body 4. A rotating structure 2 is provided on the base frame 1, and a lifting structure 3 is provided on the base frame 1. The performance testing box body 4 is located on the rotating structure 2.

[0023] The rotating structure 2 includes a fixed frame 201, a rotating wheel 202, a rotating frame 203, a limiting wheel 204, an adjusting frame 205, a rotating shaft 206, a rotating wheel 207, an electric push rod 208, a reducer 209, a first motor 210, a first universal coupling 211, and a second universal coupling 212. The fixed frame 201 is mounted on the base frame 1. The rotating wheel 202 is movably mounted on the fixed frame 201. The rotating frame 203 is movably mounted on the rotating wheel 202. The limiting wheel 204 is movably mounted on the fixed frame 205. 01. The limiting wheel 204 abuts against the rotating frame 203. The adjusting frame 205 is movably mounted on the fixed frame 201. The rotating shaft 206 is movably mounted on the adjusting frame 205. The rotating wheel 207 is mounted on the rotating shaft 206. The electric push rod 208 is movably mounted on the fixed frame 201, and the driving end of the electric push rod 208 is movably connected to the adjusting frame 205. The reducer 209 is mounted on the fixed frame 201. The first motor 210 is mounted on the base frame 1. The first universal joint... One end of coupling 211 is installed on the drive end of the first motor 210, and the other end of the first universal coupling 211 is connected to the input end of the reducer 209. One end of the second universal coupling 212 is installed on the output end of the reducer 209, and the other end of the second universal coupling 212 is connected to the rotating shaft 206. The air-sealing material is placed inside the performance test chamber body 4 for corrosion resistance testing. The performance test chamber body 4 is placed on the rotating frame 203. When it is necessary to adjust the observation angle of the performance test chamber, the electric push rod 208 is driven. 208 drives the adjusting frame 205 to rotate, causing the rotating wheel 207 to abut against the rotating frame 203, driving the first motor 210. The first motor 210 drives the first universal coupling 211 to rotate, the first universal coupling 211 drives the input end of the reducer to rotate, and the output end of the reducer drives the second universal coupling 212 to rotate. The rotating shaft 206 drives the rotating wheel 207 to rotate under the action of the second universal coupling 212. The rotating frame 203 rotates on the rotating wheel 202 under the action of the rotating wheel 207. The limiting wheel 204 can stabilize the rotation of the rotating frame 203.

[0024] Furthermore, the rotating frame 203 is provided with a groove that matches the performance test box body 4, and the fixed frame 201 is provided with reinforcing ribs. The matching grooves can stabilize the rotating frame 203 when it drives the test box body to rotate, and the reinforcing ribs increase the strength of the fixed frame 201.

[0025] Furthermore, the first motor 210 is fixed to the base frame 1 by bolts. The base frame 1 is provided with pads. The first motor 210 fixed by bolts is easy to install and remove on the base frame 1, and the pads can make the base frame 1 stable.

[0026] Furthermore, the lifting structure 3 includes a connecting plate 301, a guide rod 302, a lifting plate 303, a rotating frame 304, a first pulley 305, a threaded rod 306, a second motor 307, a second pulley 308, and a transmission belt 309. The connecting plate 301 is mounted on the base frame 1. The guide rod 302 is movably mounted on the connecting plate 301. The lifting plate 303 is mounted on the guide rod 302. The rotating frame 304 is movably mounted on the connecting plate 301. The first pulley 305 is mounted on the rotating frame 304. The threaded rod 306 is movably mounted on the rotating frame 304 and is movably connected to the lifting plate 303. The second motor 307 is mounted on the connecting plate 301. The second pulley 308... Installed on the second motor 307, the transmission belt 309 is located on the first pulley 305 and the second pulley 308. When it is necessary to drive the performance test chamber body 4 to rise and fall to facilitate use by operators of different body types, the second motor 307 is driven to rotate the second pulley 308. Under the action of the second pulley 308, the transmission belt 309 drives the first pulley 305 to rotate. The rotating frame 304 rotates on the connecting plate 301 under the action of the first pulley 305. The threaded rod 306 rotates and moves under the action of the rotating frame 304. The threaded rod 306 can drive the lifting plate 303 to move. The guide rod 302 slides on the connecting plate 301 following the lifting plate 303 to make the movement of the lifting plate 303 stable. The lifting plate 303 can drive the performance test chamber body 4 to rise and fall.

[0027] Furthermore, the rotating frame 304 is provided with reinforcing ribs, and several guide rods 302 are provided. The reinforcing ribs increase the stability of the rotating frame 304. Four guide rods 302 are provided, which are symmetrically and movable on the connecting plate 301 in pairs. The four guide rods 302 follow the movement of the lifting plate 303, so that the movement of the lifting plate 303 is stable.

[0028] Furthermore, the second motor 307 is fixed to the connecting plate 301 by bolts, and the guide rod 302 is adapted to the connecting plate 301. The second motor 307, which is fixed by bolts, is easy to install and remove on the connecting plate 301, and the adapted guide rod 302 is more stable when sliding on the connecting plate 301.

[0029] Furthermore, the rotating wheel 202 is provided in several parts, and the limiting wheel 204 is provided in several parts. The rotating wheel 202 is circumferentially movable on the fixed frame 201, which facilitates the stable rotation of the rotating frame 203. The limiting wheel 204 is circumferentially movable on the fixed frame 201, which can keep the position of the rotating frame 203 stable and prevent displacement when the rotating frame 203 rotates.

[0030] Working principle: When the observation angle of the performance test chamber needs to be adjusted, the electric push rod 208 is driven, which drives the adjusting frame 205 to rotate, causing the rotating wheel 207 to abut against the rotating frame 203. This drives the first motor 210, which in turn drives the first universal coupling 211 to rotate. The first universal coupling 211 drives the input end of the reducer to rotate, and the output end of the reducer drives the second universal coupling 212 to rotate. Under the action of the second universal coupling 212, the rotating shaft 206 drives the rotating wheel 207 to rotate. The rotating frame 203 rotates on the rotating wheel 202 under the action of the rotating wheel 207. The limiting wheel 204 ensures the stable rotation of the rotating frame 203. When it is necessary to raise and lower the performance test chamber body 4 to facilitate use by operators of different body types, the second motor 307 is driven. The second motor 307 can drive the second pulley 308 to rotate. The transmission belt 309 drives the first pulley 305 to rotate under the action of the second pulley 308. The rotating frame 304 rotates on the connecting plate 301 under the action of the first pulley 305. The threaded rod 306 rotates and moves under the action of the rotating frame 304. The threaded rod 306 can drive the lifting plate 303 to move. The guide rod 302 slides on the connecting plate 301 following the lifting plate 303, so that the movement of the lifting plate 303 is stable. The lifting plate 303 can drive the performance test chamber body 4 to rise and fall.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A performance testing device for coal mine leak-proof materials, comprising a base frame (1) and a performance testing chamber body (4), characterized in that: A rotating structure (2) is provided on the base frame (1), a lifting structure (3) is provided on the base frame (1), and the performance test box body (4) is located on the rotating structure (2); The rotating structure (2) includes a fixed frame (201), a rotating wheel (202), a rotating frame (203), a limiting wheel (204), an adjusting frame (205), a rotating shaft (206), a rotating wheel (207), an electric push rod (208), a reducer (209), a first motor (210), a first universal coupling (211), and a second universal coupling (212). The fixed frame (201) is mounted on the base frame (1). The rotating wheel (202) is movably mounted on the fixed frame (201). The rotating frame (203) is movably mounted on the rotating wheel (202). The limiting wheel (204) is movably mounted on the fixed frame (201) and abuts against the rotating frame (203). The adjusting frame (205) is movably mounted on the fixed frame (201). The shaft (206) is movably mounted on the adjusting frame (205), the rotating wheel (207) is mounted on the rotating shaft (206), the electric push rod (208) is movably mounted on the fixed frame (201) and the driving end of the electric push rod (208) is movably connected to the adjusting frame (205), the reducer (209) is mounted on the fixed frame (201), the first motor (210) is mounted on the base frame (1), one end of the first universal coupling (211) is mounted on the driving end of the first motor (210) and the other end of the first universal coupling (211) is connected to the input end of the reducer (209), one end of the second universal coupling (212) is mounted on the output end of the reducer (209) and the other end of the second universal coupling (212) is connected to the rotating shaft (206).

2. The performance testing device for coal mine air-sealing materials according to claim 1, characterized in that: The rotating frame (203) is provided with a groove that is compatible with the performance test box body (4), and the fixed frame (201) is provided with reinforcing ribs.

3. The performance testing device for coal mine air-sealing materials according to claim 1, characterized in that: The first motor (210) is fixed to the base frame (1) by bolts, and the base frame (1) is provided with pads.

4. The performance testing device for coal mine air-sealing materials according to claim 1, characterized in that: The lifting structure (3) includes a connecting plate (301), a guide rod (302), a lifting plate (303), a rotating frame (304), a first pulley (305), a threaded rod (306), a second motor (307), a second pulley (308), and a transmission belt (309). The connecting plate (301) is mounted on the base frame (1), the guide rod (302) is movably mounted on the connecting plate (301), the lifting plate (303) is mounted on the guide rod (302), and the rotating frame (304) is movably mounted on the guide rod (302). On the connecting plate (301), the first pulley (305) is mounted on the rotating frame (304), the threaded rod (306) is movably mounted on the rotating frame (304) and the threaded rod (306) is movably connected to the lifting plate (303), the second motor (307) is mounted on the connecting plate (301), the second pulley (308) is mounted on the second motor (307), and the transmission belt (309) is provided on the first pulley (305) and the second pulley (308).

5. The performance testing device for coal mine air-sealing materials according to claim 4, characterized in that: The rotating frame (304) is provided with reinforcing ribs, and the guide rod (302) is provided with several.

6. The performance testing device for coal mine air-sealing materials according to claim 4, characterized in that: The second motor (307) is fixed to the connecting plate (301) by bolts, and the guide rod (302) is adapted to the connecting plate (301).

7. The performance testing device for coal mine air-sealing materials according to claim 1, characterized in that: The rotating wheel (202) is provided in several parts, and the limiting wheel (204) is provided in several parts.

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