Fixing device for probe of borehole peeping instrument

Abstract

The utility model discloses a fixing device for a probe of a borehole peeping instrument, which relates to the technical field of coal mining and comprises a fixer body and a locking nut. The fixator body comprises a probe mounting part and a connecting part, the probe mounting part is of a circular truncated cone type hollow structure and is provided with external threads, the probe mounting part is divided into multiple parts in the circumferential direction, and the connecting part is fixedly connected to one end of the probe mounting part; and the locking nut is in threaded connection with the outer ring of the probe mounting part. The utility model has the advantages that the peeping instrument probe can be effectively locked, is not easy to deform, and can be recycled for multiple times; and the lock cannot be clamped after being locked and is easy to disassemble.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a drilling peep instrument probe fixing device. Background Art

[0002] During underground coal mine production, borehole peepholes are often used to detect the internal structure of the tunnel roof surrounding rock, observe the occurrence and development of rock fractures, and estimate the condition of the loose zone of the tunnel surrounding rock. Drilling peepholes to peek into the roof first requires drilling a hole in the roof. For some large-diameter probes, drilling often requires the use of a drilling rig, which increases the complexity of the construction process. In recent years, with the continuous development of technology, peepholes have been continuously improved, especially the peephole probe, the diameter of which has been reduced to less than 6mm. The internal structure of the surrounding rock can be peeked into by constructing anchor holes with a pneumatic anchor drill rig, simplifying the construction process. The peephole process is simple and efficient, and is widely used on site.

[0003] Existing borehole peephole push rod needles are suitable for previous large-diameter probes. For example, the patent document with announcement number CN209179747U discloses a grooved push rod for coal mine borehole peepholes, which includes a hollow round rod with threaded rods and threaded holes at both ends. Multiple hollow round rods are connected by threads, and the probe is threadedly connected to the threaded rod through the connecting hole at the tail. Since the small-diameter probe is integrated with the transmission line and the diameters of the two are basically the same, the connecting hole at the tail of the probe is eliminated. On-site, it is often fixed to the existing borehole peephole push rod by wrapping tape. This method causes the borehole peephole probe to be off-center, and the probe will rub against the hole wall during the pushing process. At the same time, the development of surrounding rock cracks in the borehole is often irregular. In order to clearly reflect the crack image, the push rod needs to be rotated multiple times, which increases the peeping time and reduces efficiency.

[0004] Patent document with announcement number CN217518637U discloses a borehole peephole probe holder. Although it realizes the centering of the probe during the pushing process of the borehole peephole, avoiding the friction between the probe and the hole wall during the pushing process, there are the following problems during on-site use: the method of fixing the probe by adjusting the adjustment groove through the pre-tightening clamp at the connecting end of the probe holder is difficult to effectively lock the probe during on-site operation, and the pre-tightening clamp is deformed after use and is difficult to recycle; the probe holder and the pushing rod are connected by a wooden pin, which makes it difficult to remove the two in a clamped state, and the wooden pin is easily damaged and difficult to recycle, resulting in waste of materials. Utility Model Content

[0005] The technical problem to be solved by the utility model is to ensure that a small-diameter probe is centered during the pushing process and to effectively lock the probe.

[0006] The utility model solves the above-mentioned technical problems through the following technical means: a borehole peephole probe fixing device includes a fixing body and a locking nut; the fixing body includes a probe mounting portion and a connecting portion, the probe mounting portion is a truncated cone hollow structure and is provided with an external thread, the probe mounting portion is divided into multiple parts along the circumferential direction, the connecting portion is fixedly connected to one end of the probe mounting portion; the locking nut is threadedly connected to the outer ring of the probe mounting portion.

[0007] As an optimized technical solution, an adjustment groove is provided between two adjacent parts of the probe mounting portion, which penetrates the side wall and extends along the busbar to both ends thereof.

[0008] As an optimized technical solution, the probe mounting portion is equally divided into four parts along the circumferential direction.

[0009] As an optimized technical solution, the connecting portion is a hollow cylinder, and the inner wall of the connecting portion is provided with an internal thread for threaded connection with the push rod.

[0010] As an optimized technical solution, the probe mounting portion and the connecting portion are coaxially arranged.

[0011] As an optimized technical solution, the locking nut is a hexagonal nut.

[0012] As an optimized technical solution, the fixer body and the locking nut are both made of stainless steel.

[0013] The utility model has the advantages that the nut is used to lock the segmented frustum-type hollow structure, which can effectively lock the peephole probe, is not easy to deform, and can be recycled many times; it will not get stuck after locking and is easy to remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a drilling peep instrument probe fixing device installed on a push rod.

[0015] Figure 2 It is a structural schematic diagram of a drilling peep instrument probe fixing device according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0017] like Figure 1 As shown, an embodiment of the utility model discloses a borehole peephole probe fixing device 1, the borehole peephole probe fixing device 1 and the push rod 2 are both hollow structures, the borehole peephole probe fixing device 1 is fixedly connected to one end of the push rod 2 and is connected to the push rod 2, the borehole peephole probe fixing device 1 can be installed with a peephole probe 3 inside, after the peephole probe 3 is installed, the transmission line 4 integrally connected with the peephole probe 3 passes through the inside of the push rod 2.

[0018] like Figure 2 As shown, the borehole peephole probe fixing device 1 includes a fixer body 11 and a locking nut 12.

[0019] The holder body 11 includes a probe mounting portion 111, an adjustment slot 112 and a connecting portion 113; the probe mounting portion 111 is a truncated cone hollow structure and is provided with an external thread, with a length of 30mm, an upper inner diameter of 6mm, an upper outer diameter of 10mm, a lower inner diameter of 20mm, a lower outer diameter of 24mm, and a wall thickness of 2mm; the probe mounting portion 111 is divided into four parts along the circumferential direction, and an adjustment slot 112 is provided between two adjacent parts of the probe mounting portion 111, which passes through its side wall and extends along its busbar to its two ends. The adjustment slot 112 has a width of 2mm, which is convenient for installing the peephole probe 3 and adapts to peephole probes 3 of different diameters; the connecting portion 113 is fixedly connected to one end of the probe mounting portion 111, the connecting portion 113 is a hollow cylinder and is coaxially arranged with the probe mounting portion 111, and the inner wall of the connecting portion 113 is provided with a standard internal thread for threaded connection with the push rod 2, with a length of 30mm, an inner diameter of 20mm, an outer diameter of 24mm, and a wall thickness of 2mm.

[0020] The locking nut 12 is a hexagonal nut with a length of 10mm, an inner diameter of 10mm, an outer diameter of 14mm, and a wall thickness of 2mm; the locking nut 12 is threadedly connected to the outer ring of the probe mounting portion 111, and the probe mounting portion 111 is locked by the locking nut 12 to achieve locking and fixing of the peephole probe 3.

[0021] The retainer body 11 and the locking nut 12 are both made of stainless steel.

[0022] Working principle: first drill a hole in the top plate to the designed depth, take out the borehole peephole detector, pass the peephole detector probe 3 through the push rod 2 and then out from the probe mounting part 111 of the fixture body 11, and lock and fix the peephole detector probe 3 with the locking nut 12; then thread the connecting part 113 of the fixture body 11 to one end of the push rod 2; then assemble the push rod 2 while pushing it into the borehole, and install the transmission line 4 into the inside of the push rod 2 until it reaches the designed peephole depth to realize the peephole; when exiting the borehole, it can be dismantled in the reverse order. When removing the borehole peephole detector probe fixing device 1 from the push rod 2, just unscrew the locking nut 12, which is simple and convenient; the nut locking method can effectively lock the peephole detector probe 3, is not easy to deform, and can be recycled many times; it will not get stuck after locking and is easy to remove.

[0023] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A drilling peep instrument probe fixing device, characterized by: It includes a fixture body and a locking nut; the fixture body includes a probe mounting part and a connecting part, the probe mounting part is a truncated cone hollow structure and is provided with an external thread, the probe mounting part is divided into multiple parts along the circumferential direction, the connecting part is fixedly connected to one end of the probe mounting part; the locking nut is threadedly connected to the outer ring of the probe mounting part.

2. The drilling peephole probe fixing device according to claim 1, characterized in that: An adjustment slot is provided between two adjacent parts of the probe mounting portion, which penetrates the side wall and extends to both ends along the busbar.

3. The drilling peephole probe fixing device according to claim 1, characterized in that: The probe mounting portion is equally divided into four parts along the circumferential direction.

4. The drilling peephole probe fixing device according to claim 1, characterized in that: The connecting portion is a hollow cylinder, and an inner wall of the connecting portion is provided with an internal thread for threaded connection with the push rod.

5. The drilling peephole probe fixing device according to claim 4, characterized in that: The probe mounting portion and the connecting portion are coaxially arranged.

6. The drilling peephole probe fixing device according to claim 1, characterized in that: The locking nut is a hexagonal nut.

7. The drilling peephole probe fixing device according to claim 1, characterized in that: The fixer body and the locking nut are both made of stainless steel.

Images