Hole clamping prevention device for camera of peeping instrument for coal mine

Abstract

The utility model belongs to the technical field of ground exploration, and particularly discloses a coal mine peeping instrument camera anti-hole-clamping device which comprises a peeping instrument and a connecting rod, the peeping instrument is in threaded connection with the connecting rod, the front end of the peeping instrument is fixedly connected with a camera and a transparent protective cover, the other end of the transparent protective cover is fixedly connected with a metal base, and the metal base is fixedly connected with the connecting rod. And the metal seat is in threaded connection with a first conical barrel. According to an existing horizontal drilling in-hole imaging device, through arrangement of a supporting rod, a conical barrel and a hole wall brushing device, contact between an imaging probe and a collapsed body can be reduced as much as possible when a collapsed hole occurs in the rear, the situation that a camera is difficult to recycle due to the rear collapsed hole is only prevented, and the camera is difficult to advance due to the fact that a front collapsed hole cannot be prevented; the transparent shield is arranged at the front end of the camera to protect the camera, and the conical barrel is arranged at the front end of the transparent shield to discharge broken stones, so that the camera is convenient to advance.

Description

Technical Field

[0001] This utility model relates to the field of ground exploration technology, specifically to a device for preventing jamming of a camera in a coal mine surveillance system. Background Technology

[0002] In underground engineering, tunnel engineering, and mining engineering, geological drilling is a common method for accurately grasping key geological information such as lithological characteristics, fracture distribution, and structural development details. After drilling is completed, a viewing instrument captures the geological conditions of the surrounding rock strata, laying a solid technical foundation for safety and efficient progress throughout the construction process. Horizontal boreholes have complex internal environments, with frequent rockfalls and significant accumulation of debris and small stones at the bottom. Under gravity, the probe adheres tightly to the borehole wall at the bottom. Propelling the imaging device in this way results in frequent friction between the probe and the rough borehole wall, easily scratching the camera probe and significantly reducing image quality. In areas with particularly complex geological conditions, sudden borehole collapse may even occur behind the probe, greatly hindering the retrieval of the imaging device and easily leading to camera loss due to jamming or blockage during borehole viewing.

[0003] Publication number CN219808988U discloses an advanced horizontal borehole imaging device, including a first adjustable support rod, a second adjustable support rod, a probe housing, a high-definition camera, a conical cylinder, and a push rod. The high-definition camera is disposed inside the front end of the probe housing. The first and second adjustable support rods are disposed on the probe housing. A borehole wall cleaner is disposed on the first adjustable support rod. One end of the conical cylinder is connected to the rear end of the probe housing, and the other end of the conical cylinder is sleeved on the push rod. This utility model, by setting a second adjustable support rod, a conical cylinder, and a borehole wall cleaner disposed on the first adjustable support rod, can meet the detection requirements of boreholes of different sizes and can push the probe into the horizontal borehole with a stable posture.

[0004] The above design only prevents the camera from being difficult to retrieve due to a collapse at the rear, but it cannot prevent the camera from being difficult to advance due to a collapse at the front. Utility Model Content

[0005] The purpose of this utility model is to provide a device to prevent the camera from getting stuck in a hole during a coal mine inspection, so as to solve the problem that the camera is difficult to advance when the hole in front of it collapses during inspection.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a device for preventing camera jamming in a coal mine peephole, comprising a camera and a connecting rod, wherein the camera is threadedly connected to the connecting rod, the front end of the peephole is fixedly connected to the camera, and the front end of the peephole is fixedly connected to a transparent cover, the transparent cover being outside the camera, and the other end of the transparent cover being fixedly connected to a metal base, the metal base being threadedly connected to a first conical cylinder.

[0007] The principle and beneficial effects of this invention are as follows: When using a conical structure in a narrow probe hole, a cylindrical viewing device, when encountering gravel, mainly attempts to push it away by direct compression. This may cause the gravel to accumulate in front of the probe hole, hindering its dispersal and causing the viewing device to get stuck. However, as the conical structure advances, its inclined surface tends to move the gravel laterally, making it easier to disperse the gravel in a confined space. The transparent protective cover prevents the camera from being scratched by gravel during advancement, thus solving the problem of difficult camera advancement.

[0008] Option 2, a preferred embodiment of the basic option, involves a second conical cylinder fixedly connected to the rear end of the camera, which is sleeved on the outside of the connecting rod. The conical cylinder at the rear end of the camera prevents debris from accumulating during the camera's return journey, thus preventing the viewing device from being lost inside the probe hole.

[0009] Option 3, a preferred embodiment of the basic option, features a second conical cylinder with evenly distributed conical spirals on its surface. The spiral direction of these spirals aligns with the thread direction of the connecting rod, and the bottom of the spirals extends to the outside of the camera. When the baffle with the conical spirals rotates and is pulled axially, the spiral lines interact with the gravel. Due to the spiral shape of the spiral lines, an axial component force is generated during rotation, which pushes the gravel along the borehole towards the opening. The conical spirals allow the gravel to be displaced by the combined effects of rotation and axial propulsion, preventing it from getting stuck. The thread direction aligning with the connecting rod direction prevents the connecting rod from unscrewing from the camera during rotation. The spiral lines extending to the outside of the viewing device are conical, with the apex pointing towards the front, displacing gravel at the rear of the camera and preventing the gravel displaced by the first conical cylinder from accumulating at the rear and causing the viewing device to jam.

[0010] Option 4, a preferred option of the basic solution, uses a 360° rotating camera, which can flexibly capture a panoramic view inside the borehole.

[0011] Option 5, a preferred option of the basic scheme, involves a transparent cover made of acrylic cylinder. Acrylic has good transparency, chemical stability, and weather resistance, and better toughness and plasticity than glass. Using an acrylic transparent cover does not affect camera imaging and can effectively protect the camera. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a device for preventing camera jamming in a coal mine surveillance camera according to this utility model;

[0013] Figure 2 This is a front view of a device for preventing camera jamming in a coal mine surveillance camera according to this utility model.

[0014] Figure 3 yes Figure 2 Sectional view at point A in the middle. Detailed Implementation

[0015] The present invention will be further described in detail below through specific embodiments:

[0016] The reference numerals in the accompanying drawings include: 1-camera, 2-connecting rod, 3-transparent cover, 4-metal base, 5-first conical cylinder, 6-second conical cylinder, 7-conical spiral, 8-camera.

[0017] Example

[0018] like Figures 1 to 3 As shown: A device for preventing camera jamming in a coal mine peephole includes a peephole 1 and a connecting rod 2. The peephole 1 is threadedly connected to the connecting rod 2. A camera 8 is fixedly connected to the front end of the peephole 1. A transparent cover 3 is provided on the outside of the camera 8. The transparent cover 3 is a cylindrical acrylic material. A metal base 4 is fixedly connected to the other end of the transparent cover 3. A threaded hole is opened on the metal base 4. A first conical cylinder 5 is threadedly connected to the metal base 4. A second conical cylinder 6 is fixedly connected to the rear end of the peephole 1. The second conical cylinder 6 is sleeved on the outside of the connecting rod 2. The cone apex of the second conical cylinder 6 faces the connecting rod 2. Conical spirals 7 are evenly distributed on the outer surface of the second conical cylinder 6. The spiral direction is consistent with the thread direction of the connecting rod 2. The bottom end of the conical spirals 7 extends to the outside of the peephole 1 to form a cone shape. The cone apex points to the front end of the peephole 1.

[0019] The implementation method of this embodiment is as follows: When performing endoscopic observation, the endoscopic instrument 1 is inserted into the borehole, the first conical cylinder 5 pushes the gravel in front to the surrounding area to prevent the gravel from being pushed forward and causing blockage, the end of the conical spiral 7 further pushes the surrounding gravel away, and the transparent protective cover 3 prevents the gravel from scratching the camera.

[0020] When retrieving the viewing device 1, pull the connecting rod 2 back, and the second conical cylinder 6 will displace the gravel. When the gravel blockage is severe, rotate the connecting rod 2 to make the second conical cylinder 6 rotate together with the conical spiral 7 to discharge the gravel, thus completing the retrieval of the viewing device 1.

[0021] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for preventing jamming of a camera in a coal mine surveillance system, characterized in that, Includes a viewing device (1) and a connecting rod (2). The viewing device (1) is threadedly connected to the connecting rod (2). A camera (8) is fixedly connected to the front end of the viewing device (1). A transparent cover (3) is also fixedly connected to the front end of the viewing device (1). The transparent cover (3) is outside the camera (8). A metal seat (4) is fixedly connected to the other end of the transparent cover (3). A first conical cylinder (5) is threadedly connected to the metal seat (4).

2. The anti-jamming device for a coal mine peephole camera according to claim 1, characterized in that... The end of the viewing device (1) away from the camera is fixedly connected to a second conical cylinder (6), which is sleeved on the outside of the connecting rod (2).

3. The anti-jamming device for a coal mine peephole camera according to claim 2, characterized in that, The second conical cylinder (6) has conical spirals (7) evenly distributed on its surface. The spiral direction of the conical spirals (7) is consistent with the thread direction of the connecting rod (2). The bottom end of the conical spirals (7) extends to the outside of the viewing instrument (1).

4. The anti-jamming device for a coal mine peephole camera according to claim 1, characterized in that, The camera (8) is a 360° rotating camera.

5. The anti-jamming device for a coal mine peephole camera according to claim 1, characterized in that, The transparent protective cover (3) is a cylinder made of acrylic material.

Images