A borehole imager lens protection cover

Abstract

This invention provides a protective cover for a borehole imaging camera lens. The protective cover includes an end cap, a cylindrical body, and legs. The cylindrical body has a first through-hole and a second through-hole disposed opposite to each other. The end cap covers the first through-hole, and the second through-hole forms a port for inserting the borehole imaging camera lens. Multiple legs are arranged circumferentially on the side wall of the cylindrical body, with the legs open near the second through-hole. This invention effectively blocks and pushes away mud, dust, sand, debris, rock fragments, and other debris. During use, it protects the borehole imaging camera lens from collisions and scratches, ensuring clear and reliable observation results and extending the lens's lifespan.

Description

Technical Field

[0001] This utility model relates to the field of coal mine surrounding rock control technology, and in particular to a protective cover for a borehole imaging instrument lens. Background Technology

[0002] In the field of coal mine surrounding rock control, it is necessary to drill horizontal or inclined boreholes at a certain angle in the coal seam, and then use a borehole imaging instrument to observe the development of surrounding rock fractures and loose zones. Boreholes are generally drilled using wet or dry drilling methods. In dry drilling, a large amount of dust and rock debris remains in the borehole. When the borehole imaging instrument is inserted into the borehole, this dust and rock debris accumulates on the lens surface, leading to observation failure or unclear images. Utility Model Content

[0003] The purpose of this invention is to provide a protective cover for the lens of a borehole imaging instrument that is not affected by dust and rock debris in the borehole, thus ensuring that clear and reliable observation results can be obtained.

[0004] The technical solution of this utility model is: a protective cover for a borehole imaging instrument lens, including an end cap, a cylindrical body and supporting legs. The cylindrical body has a first through-hole and a second through-hole arranged opposite to each other. The end cap is sealed on the first through-hole, and the second through-hole forms a port for inserting a borehole imaging instrument lens. Multiple supporting legs are arranged circumferentially on the side wall of the cylindrical body, and the multiple supporting legs are open on the side near the second through-hole.

[0005] Preferably, the support leg includes a crossbar and a diagonal bar connected to both ends of the crossbar in a figure-eight shape. The side wall of the cylinder is provided with multiple reserved holes, which are arranged diagonally on the side wall of the cylinder. The crossbar passes through two diagonally reserved holes, and the diagonal bar extends towards the second through opening.

[0006] Preferably, the angle between the diagonal bar and the horizontal bar is an obtuse angle.

[0007] Preferably, the end of the diagonal bar has a pointed corner.

[0008] Preferably, the cylinder is provided with a partition, the side wall of the cylinder between the partition and the end cap is used to install the support leg, and the interior of the cylinder between the partition and the second through port forms a cavity for placing the lens of the drilling imaging instrument.

[0009] Preferably, a rubber ring is provided along the edge of the cylinder forming the second through opening.

[0010] Preferably, the lens cover of the borehole imaging device is made of stainless steel.

[0011] Compared with related technologies, the beneficial effects of this utility model are as follows:

[0012] I. This utility model can protect the lens of a borehole imaging instrument, effectively blocking and pushing away structures such as mud, dust, sand, debris, and rock. At the same time, during use, it can protect the lens of the borehole imaging instrument from collisions and scratches, ensuring that clear and reliable observation results can be obtained, and protecting the lens of the borehole imaging instrument and extending its service life.

[0013] 2. This utility model has an open support leg on the cylinder. After the protective cover and lens are pushed into the bottom of the hole together, when the lens is pulled back, the open support leg engages with the hole wall to form resistance, allowing the lens to quickly detach from the protective cover. This allows the drilling imaging device to take images in a backward manner, achieving good shooting with less dust and debris, and is easy to use.

[0014] Third, this utility model provides a rubber ring at the second through-hole of the cylinder to prevent the cylinder from scratching the lens barrel;

[0015] Fourth, the lens body is equipped with a partition and an end cap to provide double protection for the lens surface. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the lens cover for the borehole imaging device provided by this utility model;

[0017] Figure 2 This is a schematic diagram showing the internal structure of the lens cover for the borehole imaging device provided by this utility model, with the end cap separated.

[0018] In the attached diagram: 1. End cap; 2. Reserved hole; 3. Partition; 4. Cylinder; 41. First through port; 42. Second through port; 43. Cavity; 5. Rubber ring; 6. Support leg; 61. Crossbar; 62. Diagonal bar. Detailed Implementation

[0019] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0020] like Figure 1 , Figure 2 As shown, the borehole imaging camera lens cover provided in this embodiment includes an end cap 1, a pre-drilled hole 2, a partition 3, a cylinder 4, a rubber ring 5, and a support leg 6. The borehole imaging camera lens cover is made of stainless steel.

[0021] The cylindrical body 4 has a first through-hole 41 and a second through-hole 42 arranged opposite to each other. The end cap 1 is threaded onto the first through-hole 41. The cylindrical body 4 is provided with a partition 3. Four reserved holes 2 are opened on the side wall of the cylindrical body 4 between the partition 3 and the end cap 1, and the four reserved holes 2 are arranged diagonally in pairs. A cavity 43 for placing the drilling imaging instrument lens is formed inside the cylindrical body 4 between the partition 3 and the second through-hole 42. A rubber ring 5 is provided on the edge of the cylindrical body 4 forming the second through-hole 42 to prevent scratching and damage to the drilling imaging instrument lens. The partition 3 is welded to the inner wall of the cylindrical body 4.

[0022] The support leg 6 includes a crossbar 61 and diagonal bars 62 connected to both ends of the crossbar 61 in a V-shape. The side wall of the cylinder 4 has multiple pre-drilled holes 2 arranged diagonally. The crossbar 61 passes through two diagonally arranged pre-drilled holes 2. The diagonal bars 62 extend towards the second through-hole 42. The support leg 6 is open on the side closest to the second through-hole 42. The angle between the diagonal bars 62 and the crossbar 61 is obtuse. The end of the diagonal bars 62 has a sharp point, which can insert into the rock and soil inside the hole when the lens retracts, allowing the lens to detach from the protective cover.

[0023] During installation, first remove the end cap 1, then insert a support leg 6 into the two diagonally opposite pre-drilled holes 2 until the installation of the two support legs 6 is completed. Finally, replace the end cap 1 to complete the installation of the protective cover.

[0024] In use, the front end of the borehole imaging device lens is inserted into the cavity 43 through the second through-hole 42, and the protective cover and lens as a whole are inserted into the borehole. When the bottom of the hole is reached, the lens is retracted to separate the lens from the protective cover. The protective cover remains in the borehole, and the lens takes pictures in the rewind video mode until the observation is completed.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A protective cover for a borehole imaging camera lens, characterized in that, The device includes an end cap (1), a cylindrical body (4), and legs (6). The cylindrical body (4) has a first through-hole (41) and a second through-hole (42) arranged opposite to each other. The end cap (1) is sealed on the first through-hole (41), and the second through-hole (42) forms a port for inserting a drilling imaging instrument lens. Multiple legs (6) are arranged in a circular pattern on the side wall of the cylindrical body (4), and the multiple legs (6) are open on the side near the second through-hole (42). Each leg (6) includes a crossbar (61) and a diagonal bar (62) connected to both ends of the crossbar (61) in a figure-eight shape. Multiple reserved holes (2) are provided on the side wall of the cylindrical body (4). The multiple reserved holes (2) are arranged diagonally on the side wall of the cylindrical body (4). The crossbar (61) passes through two diagonally arranged reserved holes (2), and the diagonal bar (62) extends toward the second through-hole (42).

2. The borehole imaging camera lens protective cover according to claim 1, characterized in that, The angle between the diagonal bar (62) and the horizontal bar (61) is an obtuse angle.

3. The borehole imaging camera lens protective cover according to claim 1, characterized in that, The end of the diagonal bar (62) is provided with a sharp corner.

4. The borehole imaging camera lens protective cover according to claim 1, characterized in that, The cylinder (4) is provided with a partition (3), and the side wall of the cylinder (4) between the partition (3) and the end cap (1) is used to install the support leg (6). The interior of the cylinder (4) between the partition (3) and the second through port (42) forms a cavity (43) for placing the borehole imaging instrument lens.

5. The borehole imaging camera lens protective cover according to claim 1, characterized in that, A rubber ring (5) is provided on the edge of the cylinder (4) forming the second through opening (42).

6. The borehole imaging camera lens protective cover according to claim 1, characterized in that, The lens cover of the borehole imaging device is made of stainless steel.

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