A full-travel monitoring device for a coal mine shaft

Abstract

The present application relates to the technical fields of wellbore monitoring, in particular to a full-travel monitoring device for a coal mine wellbore, comprising a cage, the side wall of the cage is provided with a deviation detection mechanism, the inside center of the cage is provided with a counterweight correction mechanism; the deviation detection mechanism comprises a plurality of fixed sleeves fixedly connected to the side wall of the cage, the top and bottom inside of the fixed sleeve are provided with a first rotating shaft, the outside of the first rotating shaft is rotatably provided with a first limiting wheel, the front and back sides of the first rotating shaft are provided with inclined guide rails; the counterweight correction mechanism comprises an elliptical rail arranged in the inside center of the cage. The present application realizes real-time detection of the deviation angle during the downward movement of the cage through the deviation detection mechanism, and when the cage is tilted and deviated, the first limiting wheel is driven to tilt and slide along the inside of the inclined guide rail, and then the conductive contact patch and the conductive block are in contact and powered on, achieving accurate detection of the tilt angle, improving the response speed of the operation room, and effectively reducing the risk.

Description

Technical Field

[0001] This invention relates to the field of well shaft monitoring technology, and in particular to a full-stroke monitoring device for coal mine well shafts. Background Technology

[0002] The location of the shaft maintenance site is a high-risk area. All actions during the cage's up and down travel are transmitted to the remote control room operator via communication signals. If the operator drives without observing the on-site situation, it is easy for on-site maintenance personnel to cause work-related accidents or mechanical accidents due to non-compliance with operating procedures. To avoid such accidents and effectively utilize mine monitoring resources to improve risk prevention and on-site control capabilities, a panoramic shaft maintenance monitoring and linkage system can be developed to realize the synchronous real-time transmission of panoramic video of the inlet maintenance area and the cage's travel to the control room.

[0003] As the existing cage descends along the shaft, the uneven inner wall of the shaft and the continuous upward airflow inside make it difficult for the cage to maintain a horizontal position during its movement. This affects the monitoring effect, resulting in a slow control response and certain safety hazards. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a full-stroke monitoring device for coal mine shafts, solving the technical problem of poor stability during the cage descent process.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a full-stroke monitoring device for coal mine shafts, including a cage, wherein the side wall of the cage is provided with an offset detection mechanism, and the inner center of the cage is provided with a counterweight correction mechanism;

[0006] The offset detection mechanism includes multiple fixed sleeves fixedly connected to the side wall of the cage. The top and bottom inner sides of each fixed sleeve are provided with a first rotating shaft. A first limiting wheel is rotatably installed on the outer side of the first rotating shaft. Inclined guide rails are provided on the front and rear sides of the first rotating shaft.

[0007] The counterweight correction mechanism includes an elliptical rail located at the center of the cage. A second rotating shaft is provided on both the left and right sides of the elliptical rail. A spherical support ring is provided on the outer side of the second rotating shaft. The top and bottom walls of the spherical support ring are tightly fitted with the elliptical rail.

[0008] Preferably, a conductive contact is fixedly connected to the end of the first rotating shaft near the fixed sleeve, and a movable cylinder is provided on the outer side of the first rotating shaft near the fixed sleeve. Multiple conductive blocks are fixedly connected at equal intervals on the inner wall of the movable cylinder.

[0009] The resistance of the conductive block gradually decreases along the direction close to the fixed sleeve, and an elastic air bladder is fixedly connected to the end of the conductive contact piece. The elastic air bladder is located inside the movable cylinder.

[0010] A magnetic slider is slidably installed inside the fixed sleeve, and a spherical ball is rotatably installed on the outside of the magnetic slider. A first spring is fixedly connected inside the magnetic slider, and a first electromagnet is fixedly connected to the other end of the first spring.

[0011] The magnetic properties of the magnetic slider are consistent with those of the first electromagnet, and the conductive contact and conductive block are electrically connected to the first electromagnet.

[0012] Preferably, a central rotating shaft is rotatably mounted at the center of the spherical support ring, and a fan-shaped counterweight is fixedly connected to the bottom of the central rotating shaft. The fan-shaped counterweight is slidably mounted on an elliptical track.

[0013] The left and right side walls of the fan-shaped counterweight are fixedly connected with permanent magnets, and the left and right sides of the permanent magnets are fixedly connected with telescopic sleeves. The telescopic sleeves are provided with a second spring inside.

[0014] One end of the second spring is fixedly connected to a permanent magnet, and the other end of the second spring is fixedly connected to a second electromagnet. The second electromagnet and the second rotating shaft are fixedly connected.

[0015] The magnetism of the second electromagnet is opposite to that of the permanent magnet, and the conductive contact and conductive block are electrically connected to the second electromagnet.

[0016] Preferably, a fixing rope is fixedly connected to the center of the top wall of the cage, and multiple longitudinal traction ropes are slidably provided through the longitudinal direction of the cage, with the inner and outer walls of the longitudinal traction ropes respectively closely fitted to the first limiting wheel and the second limiting wheel.

[0017] By employing the above technical solution, the present invention provides a full-stroke monitoring device for coal mine shafts, which has at least the following beneficial effects:

[0018] 1. This invention achieves real-time detection of the offset angle during the cage's downward movement through an offset detection mechanism. Simultaneously, when the cage tilts and offsets, it drives the first limit wheel to slide tilted along the inclined guide rail, thereby causing the conductive contact piece and the conductive block to make contact and conduct electricity. This achieves accurate detection of the tilt angle, improves the response speed of the operation room, and effectively reduces the risk.

[0019] 2. This invention achieves rapid correction of the cage tilt through a counterweight correction mechanism. At the same time, the offset detection mechanism makes contact with conductive contacts and conductive blocks of different resistance values, and uses the detection results under different tilt states to drive the counterweight correction mechanism to achieve automated correction, ensuring that the cage remains horizontal during the downward movement and effectively guaranteeing the correction accuracy.

[0020] 3. This invention achieves uniform correction when the cage is tilted by using spherical balls. At the same time, the detection results of the offset detection mechanism enable the activation of the first electromagnet, driving the spherical balls on the side wall of the cage to make appropriate contact with the concave and convex surfaces of the inner wall of the shaft. This achieves the effect that the cage always moves horizontally down the inner wall of the shaft, further ensuring the stability of the cage's downward movement.

[0021] 4. This invention achieves adaptive correction of the tilt center of gravity of the cage through a counterweight correction mechanism. At the same time, through the coordinated arrangement of the fan-shaped counterweight, permanent magnet and second electromagnet, the fan-shaped counterweight slides along the elliptical track, achieving rapid adjustment of the cage's center of gravity and further ensuring the stability of the cage during the descent process. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a side view of the cage installation structure of the present invention;

[0025] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B;

[0027] Figure 5 This is a schematic diagram of the internal structure of the counterweight correction mechanism of the present invention.

[0028] In the diagram: 1. Cage; 2. Fixing rope; 3. Longitudinal traction rope; 4. Offset detection mechanism; 40. Fixing sleeve; 41. First rotating shaft; 42. First limiting wheel; 43. Inclined guide rail; 44. Conductive contact plate; 45. Movable cylinder; 46. Conductive block; 47. Elastic airbag; 48. Magnetic slider; 49. Spherical ball; 410. First spring; 411. First electromagnet; 5. Counterweight correction mechanism; 50. Elliptical rail; 51. Second limiting wheel; 52. Second rotating shaft; 53. Spherical support ring; 54. Central rotating shaft; 55. Fan-shaped counterweight block; 56. Permanent magnet; 57. Telescopic sleeve; 58. Second spring; 59. Second electromagnet. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] Please refer to Figures 1-5 A full-stroke monitoring device for coal mine shafts includes a cage 1, a deflection detection mechanism 4 on the side wall of the cage 1, and a counterweight correction mechanism 5 at the center of the inside of the cage 1.

[0032] The offset detection mechanism 4 includes multiple fixed sleeves 40 fixedly connected to the side wall of the cage 1. The top and bottom inner sides of the fixed sleeves 40 are provided with a first rotating shaft 41. The outer side of the first rotating shaft 41 is rotatably mounted with a first limiting wheel 42. The front and rear sides of the first rotating shaft 41 are provided with inclined guide rails 43.

[0033] The counterweight correction mechanism 5 includes an elliptical rail 50 located at the center of the cage 1. Second rotating shafts 52 are provided on both the left and right sides of the elliptical rail 50. A spherical support ring 53 is provided on the outer side of the second rotating shaft 52. The top and bottom walls of the spherical support ring 53 are tightly fitted to the elliptical rail 50. When the cage 1 descends and encounters an uneven inner wall of the shaft, the cage 1 tilts. At this time, the first limiting wheel 42 contacts the longitudinal traction rope 3. Depending on the direction of the cage's deviation, each of the first limiting wheels 42 moves at different amplitudes. The deviation detection mechanism 4 enables real-time detection of the deviation angle during the descent of the cage 1. Simultaneously, when the cage 1 tilts and deviates, it drives the first limiting wheel 42 to slide along the inclined guide rail 43, thereby causing the conductive contact piece 44 and the conductive block 46 to contact and become energized. This achieves accurate detection of the tilt angle, improves the response speed of the operation, and effectively reduces risks.

[0034] Example 2

[0035] Please refer to Figures 2-4 This embodiment is basically the same as Embodiment 1. This embodiment is made on the basis of Embodiment 1 and has the same beneficial effects as Embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0036] A conductive contact 44 is fixedly connected to the end of the first rotating shaft 41 near the fixed sleeve 40. A movable cylinder 45 is provided on the outer side of the first rotating shaft 41 near the fixed sleeve 40. Multiple conductive blocks 46 are fixedly connected at equal intervals on the inner wall of the movable cylinder 45. The offset detection mechanism 4 realizes real-time detection of the offset angle during the downward movement of the cage 1. At the same time, when the cage 1 tilts and shifts, it drives the first limit wheel 42 to tilt and slide along the inclined guide rail 43, thereby making the conductive contact 44 and the conductive block 46 contact and energize, achieving accurate detection of the tilt angle, improving the response speed of the operation room, and effectively reducing the risk.

[0037] The resistance of the conductive block 46 gradually decreases along the direction close to the fixed sleeve 40. When the cage 1 is offset, the first rotating shaft 41 slides inside the inclined limiting roller 43, so that the conductive contact 44 contacts and energizes different conductive blocks 46. When the tilt is greater, the conductive contact 44 contacts and energizes the conductive block 46 with a smaller resistance, thereby driving the current of the first electromagnet 411 to increase synchronously. The end of the conductive contact 44 is fixedly connected to an elastic airbag 47. The elastic airbag 47 is located inside the movable cylinder 45. When the conductive block 46 slides, it squeezes the elastic airbag 47.

[0038] A magnetic slider 48 is slidably installed inside the fixed sleeve 40. A spherical ball bearing 49 is rotatably installed on the outside of the magnetic slider 48. A first spring 410 is fixedly connected inside the magnetic slider 48. A first electromagnet 411 is fixedly connected to the other end of the first spring 410. When the first electromagnet 411 is turned on, the magnetic slider 48 slides towards the side closer to the inner wall of the well under the action of electromagnetic repulsion. The greater the tilt angle, the greater the sliding amplitude of the magnetic slider 48. At this time, the force between the spherical ball bearing 49 and the inner wall of the well is enhanced, thereby achieving the effect of enhancing the stability of the cage 1.

[0039] As a preferred technical solution in this embodiment, the magnetism of the magnetic slider 48 and the magnetism of the first electromagnet 411 are consistent, ensuring that after the first electromagnet 411 is energized, under the action of electromagnetic repulsion, the magnetic slider 48 and the spherical ball 49 slide towards the inner wall of the well shaft, thereby enhancing the stability of the cage 1. The conductive contact 44 and the conductive block 46 are electrically connected to the first electromagnet 411, ensuring that after the conductive contact 44 and the conductive block 46 are energized, the first electromagnet 411 is driven to open, thereby realizing the auxiliary support of the spherical ball 49 for the cage 1 and the inner wall of the well shaft. The spherical ball 49 achieves uniform correction when the cage 1 is tilted. At the same time, the detection result of the offset detection mechanism 4 realizes the opening of the first electromagnet 411, driving the spherical ball 49 on the side wall of the cage 1 to make appropriate contact with the concave and convex surfaces of the inner wall of the well shaft, achieving the effect that the cage 1 always moves horizontally down along the inner wall of the well shaft, further ensuring the stability of the cage 1's downward movement.

[0040] Example 3

[0041] Please refer to Figures 2-5 This embodiment is basically the same as Embodiment 1. This embodiment is made on the basis of Embodiment 1 and has the same beneficial effects as Embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0042] A central rotating shaft 54 ​​is rotatably mounted at the center of the spherical support ring 53. A fan-shaped counterweight 55 is fixedly connected to the bottom of the central rotating shaft 54. The fan-shaped counterweight 55 is slidably mounted on the elliptical rail 50.

[0043] Permanent magnets 56 are fixedly connected to both the left and right side walls of the fan-shaped counterweight block 55. Telescopic sleeves 57 are fixedly connected to both the left and right sides of the permanent magnets 56. A second spring 58 is provided inside the telescopic sleeve 57. The counterweight correction mechanism 5 realizes the rapid correction of the tilt of the cage 1. At the same time, the conductive contact 44 in the offset detection mechanism 4 and the conductive blocks 46 with different resistance values ​​are energized through contact. The detection results under different tilt states drive the counterweight correction mechanism 5 to realize automatic correction, ensuring that the cage 1 remains horizontal during the downward movement and effectively ensuring the correction accuracy.

[0044] One end of the second spring 58 is fixedly connected to the permanent magnet 56, and the other end of the second spring 58 is fixedly connected to the second electromagnet 59. The second electromagnet 59 is fixedly connected to the second rotating shaft 52. After the second electromagnet 59 is energized, according to the different tilt directions of the cage 1, under the combined action of the electromagnetic attraction force of the second electromagnets 59 on both sides, the second spring 58 is compressed, causing the fan-shaped counterweight 55 to rotate in the opposite direction of the tilt, thereby realizing the offset correction of the cage 1. As the tilt angle increases, the current of the second electromagnet 59 increases synchronously, thereby increasing the tilt angle of the fan-shaped counterweight 55 synchronously, thus realizing the horizontal correction of the cage 1 when the inner wall of the well is tilted at different angles.

[0045] As a preferred technical solution in this embodiment, the magnetism of the second electromagnet 59 and the magnetism of the permanent magnet 56 are opposite, ensuring that under the action of electromagnetic attraction, the fan-shaped counterweight 55 is pulled to deflect. By changing the center of gravity of the fan-shaped counterweight 55, the center of gravity of the cage 1 is changed, thereby achieving tilt correction. The conductive contact 44 and the conductive block 46 are electrically connected to the second electromagnet 59. The counterweight correction mechanism 5 realizes the adaptive correction of the tilt center of gravity of the cage 1. At the same time, through the cooperative arrangement between the fan-shaped counterweight 55, the permanent magnet 56 and the second electromagnet 58, the fan-shaped counterweight 55 is tilted and slid along the elliptical track 50, achieving rapid adjustment of the center of gravity of the cage 1, and further ensuring the stability of the cage 1 during the downward movement process.

[0046] Example 4

[0047] Please refer to Figures 1-2This embodiment is basically the same as Embodiment 1. This embodiment is made on the basis of Embodiment 1 and has the same beneficial effects as Embodiment 1. The same parts can be referred to each other, and will not be described in detail here.

[0048] A fixing rope 2 is fixedly connected to the center of the top wall of the cage 1. The top wall of the fixing rope 2 is fixedly connected to the traction mechanism of the construction base surface of the top wall of the shaft 1. Multiple longitudinal traction ropes 3 are provided in the longitudinal direction of the cage 1. The inner and outer walls of the longitudinal traction ropes 3 are tightly fitted with the first limiting wheel 42 and the second limiting wheel 51, respectively. When the cage 1 moves down along the inner wall of the shaft and encounters an uneven inner wall, the change in the force between the first limiting wheel 42, the second limiting wheel 51 and the longitudinal traction rope 3 causes the first limiting wheel 42 to move.

[0049] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Since the above embodiments are substantially similar to the method embodiments, their descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0052] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A full-stroke monitoring device for coal mine shafts, comprising a cage (1), characterized in that: The cage (1) is provided with an offset detection mechanism (4) on its side wall and a counterweight correction mechanism (5) is provided at the center of the interior of the cage (1). The offset detection mechanism (4) includes multiple fixed sleeves (40) fixedly connected to the side wall of the cage (1). The top and bottom inner sides of the fixed sleeves (40) are provided with a first rotating shaft (41). The outer side of the first rotating shaft (41) is rotatably mounted with a first limiting wheel (42). The front and rear sides of the first rotating shaft (41) are provided with inclined guide rails (43). The counterweight correction mechanism (5) includes an elliptical rail (50) set in the center of the cage (1). The elliptical rail (50) has a second rotating shaft (52) on both the left and right sides. The outer side of the second rotating shaft (52) is provided with a spherical support ring (53). The top and bottom walls of the spherical support ring (53) are tightly fitted with the elliptical rail (50). A conductive contact (44) is fixedly connected to the end of the first rotating shaft (41) near the fixed sleeve (40). A movable cylinder (45) is provided on the outer side of the first rotating shaft (41) near the fixed sleeve (40). A plurality of conductive blocks (46) are fixedly connected at equal intervals on the inner wall of the movable cylinder (45). The resistance value of the conductive blocks (46) gradually decreases along the direction close to the fixed sleeve (40). The spherical support ring (53) is rotatably mounted with a central rotating shaft (54), and a fan-shaped counterweight (55) is fixedly connected to the bottom of the central rotating shaft (54). The fan-shaped counterweight (55) is slidably mounted on the elliptical rail (50). The left and right side walls of the fan-shaped counterweight (55) are fixedly connected with permanent magnets (56), and the left and right sides of the permanent magnets (56) are fixedly connected with telescopic sleeves (57). The telescopic sleeves (57) are provided with a second spring (58) inside. One end of the second spring (58) is fixedly connected to the permanent magnet (56), and the other end of the second spring (58) is fixedly connected to the second electromagnet (59). The second electromagnet (59) is fixedly connected to the second rotating shaft (52).

2. The full-stroke monitoring device for coal mine shafts according to claim 1, characterized in that: The end of the conductive contact (44) is fixedly connected to an elastic airbag (47), which is located inside the movable cylinder (45).

3. The full-stroke monitoring device for coal mine shafts according to claim 2, characterized in that: A magnetic slider (48) is slidably installed inside the fixed sleeve (40). A spherical ball (49) is rotatably installed on the outside of the magnetic slider (48). A first spring (410) is fixedly connected inside the magnetic slider (48). A first electromagnet (411) is fixedly connected to the other end of the first spring (410).

4. A full-stroke monitoring device for coal mine shafts according to claim 3, characterized in that: The magnetic slider (48) has the same magnetism as the first electromagnet (411), and the conductive contact (44) and conductive block (46) are electrically connected to the first electromagnet (411).

5. A full-stroke monitoring device for coal mine shafts according to claim 1, characterized in that: The magnetism of the second electromagnet (59) and the magnetism of the permanent magnet (56) are opposite, and the conductive contact (44) and the conductive block (46) are electrically connected to the second electromagnet (59).

6. A full-stroke monitoring device for coal mine shafts according to claim 5, characterized in that: A fixing rope (2) is fixedly connected to the center of the top wall of the cage (1), and multiple longitudinal traction ropes (3) are provided in the longitudinal direction of the cage (1). The inner and outer walls of the longitudinal traction ropes (3) are closely fitted with the first limiting wheel (42) and the second limiting wheel (51) respectively.

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