Drill hole peeping instrument push rod

Abstract

The utility model discloses a push rod of a borehole peeping instrument, which relates to the technical field of coal mining and comprises a probe fixer and a push rod, the probe fixer and the push rod are both of hollow structures, and the probe fixer is fixedly connected to one end of the push rod and communicated with the push rod; the probe fixer 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 pushing rod. Background Art

[0002] In the underground production process of coal mines, drilling peeps are often used to detect the internal structure of the surrounding rock of the tunnel roof, observe the occurrence and development of rock strata fissures, and estimate the loose circle of the tunnel surrounding rock. To drill holes in the roof, it is first necessary to drill holes in the roof. For some large-diameter probes, drilling often requires the use of drilling rigs, which increases the complexity of the construction process. In recent years, with the continuous development of technology, peeps have been continuously improved, especially the peep probe, the diameter of which has been reduced to less than 6mm. The use of pneumatic anchor drilling rigs to construct anchor holes can realize the peep of the internal structure of the surrounding rock, which simplifies the construction process. The peep process is simple and efficient, and is widely used on site.

[0003] The existing borehole peep instrument push rod needle is suitable for previous large-diameter probes. For example, the patent document with announcement number CN209179747U discloses a grooved push rod for a coal mine borehole peep instrument, which includes a hollow round rod with threaded rods and threaded holes at both ends of the hollow round rod. 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 connected to the transmission line as a whole, the diameters of the two are basically the same, so the connection hole at the tail of the probe is eliminated. On-site, it is often fixed to the existing borehole peep rod by tape winding. This method has the following disadvantages: the probe is not centered, resulting in friction between the probe and the hole wall during the pushing process; at the same time, the development of surrounding rock cracks in the borehole is mostly irregular. In order to clearly reflect the crack picture, the push rod needs to be rotated multiple times, which increases the peeping time and reduces the efficiency; when the probe is fixed to the push rod by tape winding, the transmission line also enters the borehole side by side with the push rod, which is equivalent to indirectly increasing the diameter of the push rod; when the drilling depth is large on site, the floating hole phenomenon often occurs, that is, the center line of the borehole is not on a straight line, and at the floating hole position, the stuck hole phenomenon often occurs due to the increase in the diameter of the push rod; during the rotation of the push rod and the pushing process of the floating hole position, the transmission line often rubs against the borehole wall, and the transmission line and the push rod will be entangled during the rotation process, which damages the surface of the transmission line and affects its service life.

[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 and avoids 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 push 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 the small-diameter probe is centered during the pushing process, avoid the friction between the transmission line and the borehole wall, and effectively lock the probe.

[0006] The utility model solves the above technical problems through the following technical means: including a probe holder and a push rod, the probe holder and the push rod are both hollow structures, the probe holder is fixedly connected to one end of the push rod and is connected to the push rod; the probe holder includes a holder body and a locking nut; the holder body includes a probe mounting part and a connecting part, the probe mounting part is a truncated cone type 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. The truncated cone type hollow structure method of using a nut to lock the segment can effectively lock the peep instrument probe, is not easy to deform, and can be recycled for many times; it will not get stuck after locking and is easy to remove; there is no need to rotate the push rod many times during the peeping process, which reduces the peeping time and improves efficiency; reduces the total cross-sectional area of ​​the push rod and the transmission line, so that the device can be pushed into the borehole smoothly; avoids the friction between the transmission line and the borehole wall, ensures the straightness of the transmission line, and effectively protects the equipment.

[0007] As an optimized technical solution, the push rod includes a first rod body, a connecting mechanism and a second rod body; one end of the first rod body is fixedly connected to the probe holder, and the other end is fixedly connected to the second rod body through the connecting mechanism; the second rod body is provided with one or more, and the second rod bodies are fixedly connected by the connecting mechanism.

[0008] As an optimized technical solution, one end of the first rod body connected to the probe holder is provided with an external thread, and the first rod body is threadedly connected to the connecting part; one end of the first rod body connected to the connecting mechanism is provided with an external thread, which is threadedly connected to the connecting mechanism provided with an internal thread; both ends of the second rod body are respectively provided with external threads and are respectively threadedly connected to the corresponding connecting mechanisms.

[0009] As an optimized technical solution, the second rod body is provided with a transmission line inlet penetrating through a side wall thereof, and the transmission line inlet extends from one end to the other end of the second rod body.

[0010] 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.

[0011] As an optimized technical solution, the probe mounting portion is equally divided into four parts along the circumferential direction.

[0012] 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.

[0013] As an optimized technical solution, the probe mounting portion is coaxially arranged with the connecting portion.

[0014] As an optimized technical solution, the locking nut adopts a hexagonal nut.

[0015] As an optimized technical solution, the fixer body and the locking nut are both made of stainless steel.

[0016] The advantages of the utility model are: the truncated cone hollow structure with a nut locking segment can effectively lock the peep instrument probe, is not easy to deform, and can be used repeatedly; it will not get stuck after locking and is easy to remove; there is no need to rotate the push rod multiple times during the peeping process, which reduces the peeping time and improves efficiency; the total cross-sectional area of ​​the push rod and the transmission line is reduced, so that the device can be pushed smoothly into the borehole; the friction between the transmission line and the borehole wall is avoided, the transmission line is guaranteed to be straight, and the equipment is effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a structural schematic diagram of a push rod of a borehole peep instrument according to an embodiment of the utility model.

[0018] Figure 2 It is a structural schematic diagram of a probe holder according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] like Figure 1As shown, an embodiment of the utility model discloses a borehole peep instrument push rod, comprising a probe holder 1 and a push rod 2.

[0021] The probe holder 1 and the push rod 2 are both hollow structures. The probe holder 1 is fixedly connected to one end of the push rod 2 and is connected to the push rod 2. The peephole probe 3 can be installed inside the probe holder 1. After the peephole probe 3 is installed, the transmission line 4 integrally connected to the peephole probe 3 passes through the inside of the push rod 2.

[0022] The push rod 2 includes a first rod body 21, a connecting mechanism 22 and a second rod body 23; one end of the first rod body 21 is fixedly connected to the probe holder 1, and the other end is fixedly connected to the second rod body 23 through the connecting mechanism 22; the second rod body 23 is provided with one or more, and the second rod bodies 23 are fixedly connected through the connecting mechanism 22.

[0023] The first rod body 21 is a thin-walled hollow steel pipe with a length of 1m, an inner diameter of 14mm, an outer diameter of 20mm, and a wall thickness of 3mm; an end of the first rod body 21 connected to the probe holder 1 is provided with an external thread, and the first rod body 21 is threadedly connected to the connecting portion 113; an end of the first rod body 21 connected to the connecting mechanism 22 is provided with an external thread, which is threadedly connected to the connecting mechanism 22 provided with an internal thread.

[0024] The connecting mechanism 22 is a cylindrical sleeve with an internal thread, with a length of 70 mm, an inner diameter of 20 mm, an outer diameter of 24 mm, and a wall thickness of 2 mm.

[0025] The second rod body 23 is a thin-walled hollow steel tube with a length of 1m, an inner diameter of 14mm, an outer diameter of 20mm, and a wall thickness of 3mm; both ends of the second rod body 23 are respectively provided with external threads and are respectively threadedly connected to the corresponding connecting mechanism 22; the second rod body 23 is provided with a transmission line inlet 231 that passes through its side wall, and the transmission line inlet 231 extends from one end of the second rod body 23 to the other end; the width of the transmission line inlet 231 is slightly smaller than the diameter of the transmission line 4, and the transmission line 4 has a certain flexibility and can be squeezed into the transmission line inlet 231 during installation, which can prevent the transmission line 4 from running out of the second rod body 23 during the pushing process.

[0026] like Figure 2 As shown, the probe holder 1 includes a holder body 11 and a locking nut 12 .

[0027] The holder body 11 includes a probe mounting portion 111, an adjustment groove 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 groove 112 is provided between two adjacent parts of the probe mounting portion 111, which penetrates its side wall and extends to its two ends along its generatrix, and the width of the adjustment groove 112 is 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.

[0028] The locking nut 12 is a hexagonal nut with a length of 10 mm, an inner diameter of 10 mm, an outer diameter of 14 mm, and a wall thickness of 2 mm; 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.

[0029] The probe holder 1 and the push rod 2 are both made of stainless steel.

[0030] Working principle: first drill a hole in the top plate to the designed depth, take out the drilling peephole, and pass the peephole probe 3 through one or more connecting mechanisms 22. The number of connecting mechanisms 22 passed through is calculated according to the drilling depth to be peeped at and the number of second rod bodies 23; then pass the peephole probe 3 through the first rod body 21 and out of the fixture body 11, and lock and fix the peephole probe 3 with the locking nut 12; then thread the fixture body 11 on the first rod body 21; then thread the first rod body 21 to one end of the connecting mechanism 22; then take out the second rod body 23, and press the transmission line 4 from the transmission line inlet 231 into the interior of the second rod body 23 by hand; then thread the second rod body 23 to the other end of the connecting mechanism 22; then push the device into the borehole, and then connect the next second rod body 23 through a connecting mechanism 22, and continue in this way until the designed peeping depth is reached to realize the peeping of the borehole; when exiting the borehole, they can be removed in the reverse order.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. 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 may still be modified, or some of the technical features may 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 embodiments of the present invention.

Claims

1. A drilling peep instrument push rod, characterized in that: It includes a probe holder and a push rod, both of which are hollow structures, and the probe holder is fixedly connected to one end of the push rod and is connected to the push rod; the probe holder includes a holder body and a locking nut; the holder body includes a probe mounting part and a connecting part, the probe mounting part is a truncated cone-shaped hollow structure and is provided with an external thread, the probe mounting part is divided into multiple parts along the circumferential direction, and 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 push rod of the drilling peep instrument as claimed in claim 1, characterized in that: The push rod includes a first rod body, a connecting mechanism and a second rod body; one end of the first rod body is fixedly connected to the probe holder, and the other end is fixedly connected to the second rod body through the connecting mechanism; one or more second rod bodies are provided, and the second rod bodies are fixedly connected through the connecting mechanism.

3. The push rod of the drilling peep instrument as claimed in claim 2, characterized in that: One end of the first rod body connected to the probe holder is provided with an external thread, and the first rod body is threadedly connected to the connecting part; one end of the first rod body connected to the connecting mechanism is provided with an external thread, which is threadedly connected to the connecting mechanism provided with an internal thread; both ends of the second rod body are respectively provided with external threads and are respectively threadedly connected to the corresponding connecting mechanisms.

4. The push rod of the drilling peep instrument as claimed in claim 2, characterized in that: The second rod body is provided with a transmission line inlet penetrating through a side wall thereof, and the transmission line inlet extends from one end of the second rod body to the other end.

5. The push rod of the drilling peep instrument as claimed in claim 1, characterized in that: An adjustment groove is provided between two adjacent parts of the probe mounting portion, which penetrates the side wall and extends to both ends along the busbar.

6. The push rod of the drilling peep instrument as claimed in claim 1, characterized in that: The probe mounting portion is equally divided into four parts along the circumferential direction.

7. The push rod of the drilling peep instrument as claimed in claim 1, characterized in that: The connecting part is a hollow cylinder, and the inner wall of the connecting part is provided with an internal thread for threaded connection with the push rod.

8. The push rod of the drilling peep instrument as claimed in claim 7, characterized in that: The probe mounting portion is coaxially arranged with the connecting portion.

9. The borehole peep instrument push rod according to claim 1, characterized in that: The locking nut is a hexagonal nut.

10. The borehole peep instrument push rod according to claim 1, characterized in that: The fixer body and the locking nut are both made of stainless steel.

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