A full-section air volume measurement device for mine roadways

Abstract

This utility model relates to the field of mine ventilation detection technology, and in particular to a full-section airflow measurement device for mine roadways. It solves the problem in existing technologies where the position of the anemometer cannot be flexibly adjusted vertically and horizontally, making it difficult to achieve systematic full-section wind speed measurement. The full-section airflow measurement device for mine roadways includes a movable base and a lifting frame connected to the top of the movable base. A horizontal frame is provided on one side of the lifting frame, and a support frame is provided on one side of the horizontal frame. This utility model, through the cooperation of a vertical lifting structure and a horizontal adjustment structure, achieves multi-point positioning of the anemometer in both vertical and horizontal directions. Combined with the convenient movement of the movable base, it can comprehensively collect wind speed data at various locations along the roadway cross-section, improving the coverage and accuracy of airflow measurement.

Description

Technical Field

[0001] This utility model relates to the field of mine ventilation detection technology, and in particular to a full-section air volume measurement device for mine roadways. Background Technology

[0002] Mine roadways are crucial passageways for transportation, ventilation, pedestrian access, and pipeline laying in underground mining operations. Their internal environment is complex and space-constrained, containing flammable and explosive gases such as methane and dust, posing extremely high safety risks. A good ventilation system is core to ensuring safe production in mines, and airflow, as a key parameter for measuring ventilation effectiveness, directly affects underground air quality, the ability to dilute harmful gases, and the safety of workers. Therefore, accurate and comprehensive measurement of mine roadway airflow is not only fundamental to ventilation management but also a vital means of preventing accidents such as methane accumulation, fires, and asphyxiation. With the development of deeper mining operations, problems such as diversified roadway cross-sections and uneven airflow distribution are becoming increasingly prominent. Traditional point-based or localized airflow measurement methods are no longer sufficient to meet the needs of full-section, multi-point, and high-precision monitoring. There is an urgent need for an airflow measurement device that can achieve full-section coverage and flexible adjustment.

[0003] Utility model patent CN 219691595 U discloses a mine ventilation measurement device. Although the device achieves the verticality of the air gauge during movement through a rotating mechanism and bevel gear transmission structure, effectively improving the accuracy of single-point measurement and reducing measurement errors caused by tilting, it still has significant defects in practical use: the device can only achieve rotational adjustment of the air gauge in the horizontal plane, lacking vertical lifting or horizontal movement adjustment, and cannot allow the air gauge to reach different heights within the roadway cross-section for measurement. This makes it difficult to complete systematic sampling of the wind speed distribution across the entire cross-section. Due to the inability to move flexibly in the vertical direction, the device does not fully cover the measurement points when facing tall roadways or non-standard cross-sections, easily missing low wind speed areas at the top or bottom, seriously affecting the comprehensiveness and reliability of the total ventilation calculation.

[0004] Therefore, to address the shortcomings of existing technologies, we urgently need a full-section ventilation volume measurement device for mine roadways to solve this problem. This new measuring device should significantly improve the comprehensiveness and flexibility of ventilation volume measurement, enabling multi-degree-of-freedom adjustment of the air volume meter in both horizontal and vertical directions. Simultaneously, it should better meet the needs of modern mines for high-precision, full-coverage, and high-efficiency ventilation monitoring, providing strong technical support for safe mine production. Utility Model Content

[0005] The purpose of this invention is to provide a full-section air volume measurement device for mine roadways, which solves the problem that existing technologies can only achieve rotational adjustment of the air meter in the horizontal plane, lacking vertical lifting or horizontal movement adjustment, making it impossible to measure the air meter at different heights within the roadway cross section, thus making it difficult to systematically sample the wind speed distribution across the entire cross section.

[0006] To achieve the above objectives, this utility model provides a full-section air volume measuring device for mine roadways, including a movable base and a lifting frame connected to the top of the movable base. A horizontal frame is provided on one side of the lifting frame, and a support frame is provided on one side of the horizontal frame. An air meter is installed inside the support frame. The support frame is connected to the horizontal frame through a horizontal adjustment structure. The horizontal frame is connected to the lifting frame through a vertical lifting structure. Vertical guide structures that cooperate with the vertical lifting structure are provided on both sides of the lifting frame.

[0007] The movable base has a push handle on one side of its top, and the bottom sides of the push handle are fixedly connected to the top of the movable base with bolts.

[0008] The vertical lifting structure includes a lifting block slidably connected inside the lifting frame and a push cylinder installed at the top of the lifting frame, with the output end of the push cylinder connected to the top of the lifting block.

[0009] The support frame is fixedly connected to side plates on both sides, and flexible pads are connected to the side of the two side plates that are close to each other.

[0010] The horizontal frame has a sliding groove on one side. The horizontal adjustment structure includes a lead screw and a drive motor installed at the end of the horizontal frame. The lead screw is rotatably connected inside the sliding groove. The output shaft of the drive motor is connected to the end of the lead screw. A sliding block is connected to one side of the support frame and is slidably connected inside the sliding groove. The sliding block is threadedly engaged with the lead screw. One side of the horizontal frame is connected to the side wall of the lifting block through a connecting bracket.

[0011] The lifting frame has vertical slots on both sides, and the vertical guide structure includes two guide rods. The two guide rods are respectively connected to the two sides of the lifting frame. Each guide rod has a sliding sleeve slidably connected to its outer ring. One side of the sliding sleeve is connected to a connecting rod that slides with the vertical slot. One end of the connecting rod is connected to the side wall of the lifting block.

[0012] This utility model discloses a full-section air volume measurement device for mine roadways. By incorporating a movable base, the device achieves convenient movement and accurate positioning within the roadway, improving the flexibility of on-site operations. The coordination between the lifting frame and the vertical lifting structure, combined with the vertical guide structures on both sides, effectively solves the problem of the inability to flexibly adjust the height of the air meter in the vertical direction in existing technologies. This allows the air meter to cover various height areas from the roadway floor to the roof, making it particularly suitable for tall or non-standard cross-section roadways. It avoids air volume calculation deviations caused by insufficient measurement points, significantly improving the comprehensiveness and reliability of the measurement. The horizontal frame and the support frame achieve lateral movement through a horizontal adjustment structure, overcoming the deficiency of existing technologies that can only rotate horizontally and cannot translate. This allows the air meter to perform continuous or segmented multi-point measurements at the same height level, enhancing the ability to capture areas with uneven airflow distribution and further improving the accuracy of full-section air volume assessment. The stable support of the support frame for the air meter and the guiding design during the adjustment process ensure the stability of the air meter's posture during movement, reducing measurement errors caused by vibration or tilting. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0015] Figure 2 This is a structural schematic diagram of the movable base and support frame according to an embodiment of the present utility model.

[0016] Figure 3 This is a schematic diagram of the sliding groove and lead screw according to an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the guide rod and sliding sleeve according to an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the sliding block and side plate according to an embodiment of the present invention.

[0019] In the diagram: 1. Movable base; 2. Lifting frame; 3. Horizontal frame; 4. Wind gauge; 5. Push handle; 6. Support frame; 7. Sliding groove; 8. Connecting bracket; 9. Lead screw; 10. Drive motor; 11. Vertical groove; 12. Guide rod; 13. Sliding sleeve; 14. Push cylinder; 15. Connecting rod; 16. Lifting block; 17. Sliding block; 18. Side plate. Detailed Implementation

[0020] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0021] Example 1

[0022] Please see Figure 1-5 As shown, a full-section air volume measuring device for a mine roadway in this embodiment includes a movable base 1 and a lifting frame 2 connected to the top of the movable base 1. A horizontal frame 3 is provided on one side of the lifting frame 2, and a support frame 6 is provided on one side of the horizontal frame 3. An air meter 4 is provided inside the support frame 6. The support frame 6 is connected to the horizontal frame 3 through a horizontal adjustment structure. The horizontal frame 3 is connected to the lifting frame 2 through a vertical lifting structure. Vertical guide structures that cooperate with the vertical lifting structure are provided on both sides of the lifting frame 2.

[0023] Workflow: When using this mine roadway full-section air volume measuring device, firstly, the entire device is pushed into the designated measuring section position of the roadway to be measured via the movable base 1. The wheel design of the movable base 1 facilitates movement and positioning on complex underground ground surfaces. After the device reaches the predetermined position, the vertical lifting structure is activated. This structure is usually composed of a motor-driven lead screw or hydraulic push rod, which drives the horizontal frame 3 to move vertically up and down along the lifting frame 2. The vertical guide structures on both sides of the lifting frame 2, such as guide rails and sliders, ensure that the horizontal frame 3 remains stable and does not deviate during the lifting process, thereby achieving accurate positioning of the air volume meter 4 at different heights on the roadway cross-section. After stabilizing at a certain height, the device is then moved by water... The horizontal adjustment structure drives the support frame 6, along with the internal wind gauge 4, to move laterally in the horizontal direction. The horizontal adjustment structure can adopt a translation mechanism that uses a slide rail and a lead screw, allowing the wind gauge 4 to move gradually from one side of the roadway to the other, completing multi-point wind speed measurement at this height level. By repeating the above combination of vertical lifting and horizontal movement, wind speed data at multiple locations across the entire cross-section of the roadway can be systematically collected, achieving a comprehensive scan of the airflow distribution across the entire cross-section. During the measurement process, the wind gauge 4 always maintains a perpendicular posture to the airflow direction to ensure measurement accuracy. All data can be transmitted in real time to the ground monitoring system via wired or wireless means for analysis and processing, completing the accurate calculation and evaluation of the airflow across the entire cross-section.

[0024] Example 2

[0025] Please see Figure 1-5As shown in this embodiment, a full-section air volume measuring device for a mine roadway has a push handle 5 on one side of the top of a movable base 1. Both sides of the bottom of the push handle 5 are fixedly connected to the top of the movable base 1 with bolts. Specifically, by fixing the push handle 5 to the top of the movable base 1 with bolts, the operator can easily move the entire device on the roadway surface by holding the push handle 5 and applying force, thereby achieving rapid adjustment and positioning of the measurement position. This improves the convenience and efficiency of moving and operating the device in complex underground environments.

[0026] Both sides of the support frame 6 are fixedly connected to side plates 18, and flexible pads are connected to the sides of the two side plates 18 that are close to each other. Specifically, through the fixed connection between the side plates 18 and the two sides of the support frame 6, and the setting of flexible pads on the inner side of the side plates 18, after the wind gauge 4 is installed inside the support frame 6, the flexible pads can fit against the wind gauge shell to provide buffer support, reduce the damage to the instrument caused by vibration or collision during transportation or adjustment, and achieve the effect of enhancing the installation stability and safety of the wind gauge 4.

[0027] Example 3

[0028] Please see Figure 1-5 As shown in the figure, a full-section air volume measuring device for a mine roadway in this embodiment includes a vertical lifting structure comprising a lifting block 16 slidably connected inside a lifting frame 2 and a push cylinder 14 installed at the top of the lifting frame 2. The output end of the push cylinder 14 is connected to the top of the lifting block 16. Specifically, by connecting the push cylinder 14 to the top of the lifting block 16 and cooperating with the lifting frame 2 to form a vertical lifting structure, after the push cylinder 14 is activated, its output end extends and retracts, causing the lifting block 16 to move up and down along the inside of the lifting frame 2, thereby driving the horizontal frame 3 connected to it to achieve a stable vertical lifting action, thus achieving the effect of providing reliable power output and realizing the effect of continuously adjustable height positioning of the air meter 4 in the vertical direction.

[0029] A sliding groove 7 is provided on one side of the horizontal frame 3. The horizontal adjustment structure includes a lead screw 9 and a drive motor 10 installed at the end of the horizontal frame 3. The lead screw 9 is rotatably connected inside the sliding groove 7. The output shaft of the drive motor 10 is connected to the end of the lead screw 9. A sliding block 17 is connected to one side of the support frame 6 and is slidably connected inside the sliding groove 7. The sliding block 17 is threadedly engaged with the lead screw 9. One side of the horizontal frame 3 is connected to the side wall of the lifting block 16 through a connecting bracket 8. Specifically, the drive motor 10 is connected to the end of the lead screw 9, and the lead screw 9 is rotatably connected inside the sliding groove 7. The sliding block 17 is slidably engaged with the sliding groove 7 and threadedly engaged with the lead screw 9. When the drive motor 10 is started, it drives the lead screw 9 to rotate, thereby driving the sliding block 17 to make linear reciprocating motion along the sliding groove 7, thereby driving the support frame 6 and the air meter 4 to move accurately in the horizontal direction. This achieves the effect of automatic multi-point positioning of the air meter 4 in the horizontal direction of the roadway cross section, improving the measurement coverage and accuracy.

[0030] Vertical slots 11 are provided on both sides of the lifting frame 2. The vertical guide structure includes two guide rods 12, which are respectively connected to the two sides of the lifting frame 2. A sliding sleeve 13 is slidably connected to the outer ring of each guide rod 12. A connecting rod 15 that slides in cooperation with the vertical slot 11 is connected to one side of the sliding sleeve 13. One end of the connecting rod 15 is connected to the side wall of the lifting block 16. Specifically, the guide rods 12 are connected to both sides of the lifting frame 2, the sliding sleeve 13 is sleeved on the outer ring of the guide rods 12, one end of the connecting rod 15 is connected to the sliding sleeve 13, and the other end passes through the vertical slot 11 and is connected to the side wall of the lifting block 16. During the up and down movement of the lifting block 16, the sliding sleeve 13 slides along the guide rod 12, and the connecting rod 15 slides synchronously in the vertical slot 11, forming a double-sided guide constraint. This achieves the effect of providing stable guide support for the lifting process, preventing the horizontal frame 3 from swaying or jamming, and ensuring smooth and reliable vertical lifting.

[0031] When using this mine roadway full-section air volume measuring device, the operator first manually pushes the handle 5, which is fixed to the top of the movable base 1 by bolts on both sides of its bottom, providing a stable force point. This allows the entire device to be easily pushed along the roadway floor to the designated position of the section to be measured. The wheel structure at the bottom of the movable base 1, together with the handle 5, enables the device to move smoothly and be accurately positioned on uneven or slippery ground underground. Once the device is in place, the push cylinder 14 installed at the top of the lifting frame 2 is activated. Its output end generates a linear thrust that acts on the top of the lifting block 16 connected to it, driving the lifting block 16 inside the lifting frame 2. Sliding vertically up and down, the lifting frame 2 has vertical slots 11 on both sides, and the vertical guide structure is composed of guide rods 12 connected to both sides of the lifting frame 2. Each guide rod 12 has a sliding sleeve 13 slidably connected to its outer ring. A connecting rod 15 is connected to one side of the sliding sleeve 13, and the other end of the connecting rod 15 passes through the vertical slot 11 and is fixedly connected to the side wall of the lifting block 16. Therefore, during the lifting process of the lifting block 16, the sliding sleeve 13 slides synchronously along the guide rod 12, and the connecting rod 15 slides in the vertical slot 11, forming a stable guide on both sides, effectively preventing swaying or tilting during the lifting process and ensuring smooth and reliable movement. As the lifting block 16 rises or falls, its side wall is connected by a connecting support. The frame 8 drives the horizontal frame 3 to move vertically and vertically in sync, thereby achieving precise positioning of the support frame 6 and the internal air meter 4 at different heights in the tunnel cross-section. Once a certain height measurement position is determined, the drive motor 10 installed at the end of the horizontal frame 3 is started. Its output shaft drives the lead screw 9 to rotate. The lead screw 9 is rotatably connected to the sliding groove 7 opened on one side of the horizontal frame 3. The sliding block 17 connected to one side of the support frame 6 is embedded in the sliding groove 7 and threadedly engaged with the lead screw 9. When the lead screw 9 rotates, the sliding block 17 moves linearly back and forth along the sliding groove 7, thereby driving the support frame 6 and the air meter 4 to move smoothly from one side of the tunnel to the other in the horizontal direction, completing multi-point positioning at that height. Wind speed data acquisition: The wind meter 4 is stably fixed inside the support frame 6, and side plates 18 are fixedly connected to both sides of the support frame 6. Flexible pads are provided on the sides of the side plates 18 that are close to each other. During the measurement process, the flexible pads form a buffer fit against the outer shell of the wind meter 4, reducing damage to the precision instrument caused by movement, vibration or accidental collision, and ensuring its measurement accuracy and service life. By repeating the above-mentioned coordinated operation of vertical lifting and horizontal movement, the wind meter 4 can systematically cover multiple measuring points of the entire cross-section of the roadway, realizing a comprehensive scan of the wind speed distribution. All collected data can be uploaded to the monitoring system in real time through the built-in transmission module for accurate calculation of the cross-section air volume and assessment of ventilation status.

[0032] This device, through the coordinated arrangement of the movable base 1 and the push handle 5, enables convenient movement and accurate positioning of the equipment in complex downhole environments, significantly improving on-site operational efficiency. The push cylinder 14, serving as the power source for the vertical lifting structure, connects to the lifting block 16, providing a stable and controllable lifting driving force to ensure that the wind gauge 4 can be precisely adjusted between different heights, meeting the measurement needs of diverse cross-sections. The guide rods 12, sliding sleeves 13, connecting rods 15, and vertical grooves 11 on both sides of the lifting frame 2 together constitute a vertical guide structure, forming a dual-sided synchronous guide mechanism. This effectively constrains the movement trajectory of the lifting block 16, avoiding jamming or swaying caused by uneven force on one side, greatly enhancing the stability and reliability of the vertical lifting process. The connecting bracket 8 firmly connects the lifting block 16 to the horizontal frame 3, ensuring the continuity of power transmission and the overall rigidity of the structure. The sliding groove 7 on the horizontal frame 3 provides support for the sliding block 17. The guide path, in conjunction with the threaded transmission of the lead screw 9 driven by the drive motor 10 and the sliding block 17, forms a horizontal adjustment structure, realizing the automatic, continuous, and precise horizontal displacement of the support frame 6 and the wind gauge 4. This overcomes the limitations of traditional equipment that can only perform fixed-point or rotational measurements, significantly improving the coverage of measurement points and the representativeness of data. The support frame 6 provides stable support for the wind gauge 4, and the side plates 18 on both sides, combined with flexible pads, enhance the buffering and safety of the instrument installation, effectively reducing the risk of mechanical impact on the wind gauge 4 during transportation and operation. The overall structure, through the coordinated work of multiple components such as the movable base 1, lifting frame 2, vertical lifting structure, vertical guide structure, horizontal frame 3, horizontal adjustment structure, and support frame 6, realizes the flexible positioning and full-section scanning measurement of the wind gauge 4 in three-dimensional space, solving the problem that existing technologies cannot perform flexible adjustment in both vertical and horizontal directions simultaneously.

[0033] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A full-section air volume measuring device for mine roadways, characterized in that, include: The mobile base and the lifting frame connected to the top of the mobile base are provided. A horizontal frame is provided on one side of the lifting frame, and a support frame is provided on one side of the horizontal frame. A wind gauge is provided inside the support frame. The support frame is connected to the horizontal frame through a horizontal adjustment structure. The horizontal frame is connected to the lifting frame through a vertical lifting structure. Vertical guide structures that cooperate with the vertical lifting structure are provided on both sides of the lifting frame.

2. The mine roadway full-section air volume measuring device according to claim 1, characterized in that, A push handle is provided on one side of the top of the movable base, and both sides of the bottom of the push handle are fixedly connected to the top of the movable base with bolts.

3. The mine roadway full-section air volume measuring device according to claim 1, characterized in that, The vertical lifting structure includes a lifting block slidably connected inside the lifting frame and a push cylinder installed at the top of the lifting frame, the output end of which is connected to the top of the lifting block.

4. The mine roadway full-section air volume measuring device according to claim 2, characterized in that, Both sides of the support frame are fixedly connected to side plates, and flexible pads are connected to the sides of the two side plates that are close to each other.

5. A full-section air volume measuring device for mine roadways according to claim 3, characterized in that, A sliding groove is provided on one side of the horizontal frame. The horizontal adjustment structure includes a lead screw and a drive motor installed at the end of the horizontal frame. The lead screw is rotatably connected inside the sliding groove. The output shaft of the drive motor is connected to the end of the lead screw. A sliding block is connected to one side of the support frame and is slidably connected inside the sliding groove. The sliding block is threadedly engaged with the lead screw. One side of the horizontal frame is connected to the side wall of the lifting block through a connecting bracket.

6. The mine roadway full-section air volume measuring device according to claim 5, characterized in that, The lifting frame has vertical slots on both sides. The vertical guide structure includes two guide rods, which are respectively connected to the two sides of the lifting frame. Each guide rod has a sliding sleeve slidably connected to its outer ring. One side of the sliding sleeve is connected to a connecting rod that slides with the vertical slot. One end of the connecting rod is connected to the side wall of the lifting block.

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