A coal mine underground soil layer exploration equipment

Abstract

The present invention belongs to the technical field of soil layer exploration equipment, and discloses a kind of coal mine underground soil layer exploration equipment, including a transmission assembly, the transmission assembly includes a connecting pipe and a connecting plate fixedly sleeved at the bottom thereof, and also includes: a drilling assembly sleeved at the bottom of the connecting pipe; a ratchet assembly installed between the transmission assembly and the drilling assembly. When the above scheme uses the first drill rod to drill downward and faces an underground cavity, the first drill rod will be driven downward by the elastic force of the spring, and drive the second ratchet to disengage from the meshing with the first ratchet and stop the first drill rod from rotating, so the ball will contact the bottom of the annular cavity and slip inside the annular cavity, and finally, the rock layer below the second drill rod that stops rotating will support the transmission assembly, thereby solving the problem that the drill rod will fall and be difficult to take out when facing a groundwater layer or an underground hole.

Description

Technical Field

[0001] The invention belongs to the technical field of soil layer exploration equipment, in particular to a soil layer exploration equipment for underground coal mines. Background Art

[0002] Soil layer exploration is a crucial link in coal mining engineering. It uses advanced drilling, radar, electromagnetic induction and other technical means to obtain the physical, chemical and structural characteristics of the soil layer underground for analyzing the coal mine soil layer. Before exploring the soil layer, people need to use the driving mechanism at the top of the drill rod to drive the drill rod to drill holes in the coal mine soil layer, and inject water into the hole to mix the soil layer in the drilling process into mud. At the same time, people use the pump body to extract the mud, so as to facilitate people's continuous drilling and subsequent detection of detection equipment. However, there will be groundwater layers or underground holes in the soil layer. When the bottom end of the drill rod enters the groundwater layer or underground hole, due to the lack of support from the stratum at the bottom end of the drill rod, the components above the surface used to support the drill rod may be subjected to huge gravity instantly, thereby causing damage to the support components, and at the same time, the drill rod may be difficult to remove from the hole as a whole. Therefore, in order to solve the above problems, a coal mine underground soil layer exploration device is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above background technology, the present invention provides a coal mine underground soil layer exploration equipment, which solves the problem that the drill rod will fall and be difficult to remove when facing the groundwater layer or underground hole.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal mine underground soil layer exploration equipment, comprising a transmission assembly, the transmission assembly comprising a connecting pipe and a connecting plate fixedly sleeved at the bottom thereof, and further comprising: a drilling assembly sleeved at the bottom of the connecting pipe; a ratchet assembly installed between the transmission assembly and the drilling assembly;

[0005] The drilling assembly comprises a first drill rod and a second drill rod movably connected to the bottom of the connecting pipe, the top of the first drill rod is movably connected to the inside of the second drill rod, the top and bottom of the second drill rod are respectively provided with an annular cavity and a plurality of limiting grooves, and a fixing block is provided in the middle of the first drill rod;

[0006] Among them, the connection disk has a circular array inside and is movably connected with balls, and the two are installed in the annular cavity to reduce the friction when contacting the annular cavity;

[0007] The ratchet assembly comprises a first ratchet and a second ratchet respectively fixed to the bottom end of the connecting pipe and the top end of the first drill rod, and a spring is arranged between the top end of the first drill rod and the bottom end of the connecting pipe;

[0008] When the bottom end of the fixed block contacts the formation, the downward movement of the connecting pipe drives the first ratchet and the second drill rod downward, and the first ratchet and the second ratchet are engaged in one-way manner, and the downward movement of the second drill rod enables the fixed block to enter the limiting groove.

[0009] Preferably, the ball passes through the connecting plate, and the diameter of the ball is smaller than the height of the annular cavity;

[0010] Before and after the bottom end of the first drill rod contacts the ground, the balls are respectively connected with the top and bottom of the annular cavity in a rolling manner.

[0011] Preferably, the number of the limiting grooves is equal to the number of the fixing blocks, and the limiting grooves include a first vertical groove and a horn groove communicating with the first vertical groove below;

[0012] The sum of the arcs of the bottom ends of the plurality of horn grooves is equal to 360°, and the top end of the fixing block is conical.

[0013] Preferably, the bottom ends of the first drill rod and the second drill rod are drill bits;

[0014] The diameter of the hole drilled by the drill bit at the bottom end of the first drill rod is also larger than the diameter at the smallest point of the bottom end of the second drill rod.

[0015] Preferably, the bottom of the connecting pipe is divided into two layers, an inner layer and an outer layer, wherein the spring is arranged between the bottom end of the inner layer of the connecting pipe and the first drill rod, and the first ratchet is fixedly connected to the bottom end of the outer layer of the connecting pipe.

[0016] Preferably, the rod body portion of the second drill rod is also equipped with several sets of double protection mechanisms, which include a connecting frame fixedly installed on the second drill rod; an elastic limiting rod symmetrically and fixedly connected to the connecting frame; a movable frame movably mounted on the elastic limiting rod and located inside the second drill rod; and a four-link assembly movably connected to the movable frame on one side of the connecting frame.

[0017] Preferably, the four-link assembly comprises a slider movably connected to the inside of the movable frame, two groups of connecting rods are hinged inside the slider, a pressure plate is hinged at one end of the connecting rod away from the slider, and bumps are symmetrically fixed on both sides of the slider.

[0018] Preferably, the connecting rod is tilted downward from one end close to the slider toward one end of the pressure plate, and cannot rotate after the connecting rod is rotated to the horizontal position. The pressure plate is also provided with saw teeth tilted toward the inner wall of the channel on the side away from the connecting rod.

[0019] Preferably, guide grooves are symmetrically provided inside the movable frame for allowing the four-link assembly to slide inside, and an arc-shaped spring piece for supporting the protrusion is also fixedly connected inside the movable frame.

[0020] Preferably, the guide groove comprises a second vertical groove and an oblique groove connected thereto, the bottom end of the oblique groove is connected to the outside and the opening of the oblique groove is greater than the height of the protrusion.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The above scheme prevents the device from falling into the hole as a whole when facing an underground cavity through the cooperation between the first drill rod, the second drill rod, the first ratchet and the second ratchet. When the first drill rod drills downward and faces an underground cavity, the first drill rod will move downward under the elastic force of the spring, and drive the second ratchet to disengage from the meshing with the first ratchet and stop the first drill rod from rotating. At the same time, the fixed block will also move downward and disengage from the limiting groove to stop rotating. At this time, under the action of the gravity of the connecting pipe, the ball will contact the bottom of the annular cavity and slip inside the annular cavity. Finally, the rock layer under the second drill rod that stops rotating will support the transmission component and prevent the device as a whole from falling.

[0023] The above scheme enables the device to further improve its stability and safety when facing an underground cavity through the coordination between structures such as the pressure plate, connecting rod, slider and movable frame. The movable frame is squeezed during the downward movement of the first drill rod and the four-bar linkage assembly is driven to move outward as a whole. When the pressure plate is separated from the second drill rod, the pressure plate abuts against the inner wall of the hole drilled by the second drill rod. Since the bottom of the first drill rod lacks support, the device as a whole has a downward trend, and the four-bar linkage assembly as a whole also has a downward trend. However, the pressure plate abuts against the inner wall of the hole and cannot move downward. Therefore, when the slider moves downward, it will drive the top end of the connecting rod downward and squeeze the pressure plate at its bottom to more tightly abut against the inner wall of the hole, so as to improve the safety of the device when facing an underground cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0026] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0027] Figure 4 for Figure 2 The enlarged view of point B in the middle;

[0028] Figure 5 An exploded view of the ratchet assembly and a cross-sectional view of the second drill rod;

[0029] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0030] Figure 7 It is an exploded view of the double protection mechanism of the present invention;

[0031] Figure 8 An exploded view of the four-bar linkage assembly of the present invention;

[0032] Fig. 9 It is a schematic diagram of the cross-sectional structure of the convex block of the present invention;

[0033] Fig.10 It is a plan view schematically showing that the first drill rod of the present invention penetrates into the cavity of the soil layer.

[0034] In the figure: 1. transmission assembly; 11. connecting pipe; 12. connecting plate; 13. ball; 2. drilling assembly; 21. first drill rod; 22. second drill rod; 23. annular cavity; 24. limiting groove; 241. first vertical groove; 242. horn groove; 25. fixing block; 3. ratchet assembly; 31. first ratchet; 32. second ratchet; 33. spring; 4. double protection mechanism; 41. connecting frame; 42. elastic limiting rod; 43. movable frame; 431. guide groove; 4311. second vertical groove; 4312. oblique groove; 432. arc spring piece; 44. four-bar connecting rod assembly; 441. slider; 442. connecting rod; 443. pressure plate; 444. bump. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 creative work are within the scope of protection of the present invention.

[0036] like Figures 1 to 10 As shown, the present invention provides a coal mine underground soil layer exploration equipment, including a transmission assembly 1, the transmission assembly 1 includes a connecting pipe 11 and a connecting plate 12 fixedly sleeved at the bottom thereof, and also includes: a drilling assembly 2, which is sleeved at the bottom of the connecting pipe 11; a ratchet assembly 3, which is installed between the transmission assembly 1 and the drilling assembly 2;

[0037] The drilling assembly 2 includes a first drill rod 21 and a second drill rod 22 movably connected to the bottom of the connecting pipe 11. The top of the first drill rod 21 is movably connected to the inside of the second drill rod 22. The top and bottom of the second drill rod 22 are respectively provided with an annular cavity 23 and a plurality of limiting grooves 24. A fixing block 25 is provided in the middle of the first drill rod 21.

[0038] The connection plate 12 has a circular array inside and is movably connected with a ball bearing 13, and the two are installed in the annular cavity to reduce the friction when contacting the annular cavity 23;

[0039] The ratchet assembly 3 comprises a first ratchet 31 and a second ratchet 32 ​​respectively fixed to the bottom end of the connecting tube 11 and the top end of the first drill rod 21, and a spring 33 is arranged between the top of the first drill rod 21 and the bottom of the connecting tube 11;

[0040] When the bottom end of the fixing block 25 is in contact with the ground, the connecting pipe 11 moves downward to drive the first ratchet 31 and the second drill rod 22 downward, and the first ratchet 31 and the second ratchet 32 ​​are engaged in one direction, and the downward movement of the second drill rod 22 enables the fixing block 25 to enter the limiting groove 24;

[0041] The bottom of the connecting tube 11 is divided into two layers, an inner layer and an outer layer, wherein the spring 33 is arranged between the bottom end of the inner layer of the connecting tube 11 and the first drill rod 21 , and the first ratchet 31 is fixedly connected to the bottom end of the outer layer of the connecting tube 11 .

[0042] By adopting the above scheme, when drilling downward through the first drill rod 21 and facing the underground cavity, the first drill rod 21 will move downward under the elastic force of the spring 33, and drive the second ratchet 32 ​​to disengage from the meshing with the first ratchet 31 and stop the first drill rod 21 from rotating. At the same time, the fixing block 25 will also move downward and disengage from the limiting groove 24 to stop the rotation. At this time, under the action of the gravity of the connecting pipe 11, the ball 13 will contact the bottom of the annular cavity 23 and slip inside the annular cavity 23. Fig.10 As shown, the rock layer below the second drill rod 22 that has stopped rotating will support the transmission assembly 1 to prevent the entire device from falling.

[0043] like Figure 3 As shown, the ball 13 passes through the connecting plate 12, and the diameter of the ball 13 is smaller than the height of the annular cavity 23;

[0044] Before and after the bottom end of the first drill rod 21 contacts the ground, the balls 13 are respectively connected in a rolling manner to the top and bottom of the annular cavity 23;

[0045] By adopting the above solution, the ball 13 slides in the connecting disk 12 and the annular cavity 23 , which can reduce the friction between the connecting pipe 11 and the connecting disk 12 .

[0046] like Figure 1-2 and Figure 5-6 As shown, the number of the limiting grooves 24 is equal to the number of the fixing blocks 25, and the limiting grooves 24 include a first vertical groove 241 and a horn groove 242 communicating therewith below;

[0047] The sum of the arcs of the bottom ends of the plurality of horn slots 242 is equal to 360°, and the top end of the fixing block 25 is conical;

[0048] The bottom ends of the first drill rod 21 and the second drill rod 22 are drill bits;

[0049] The diameter of the hole drilled by the drill bit at the bottom end of the first drill rod 21 is also larger than the diameter at the smallest point at the bottom end of the second drill rod 22;

[0050] By adopting the above scheme, since the sum of the curvatures of the bottom ends of the horn grooves 242 is equal to 360°, when the limiting groove 24 moves downward, it can be accurately engaged with the fixing block 25. At this time, the rotation of the first drill rod 21 can also drive the second drill rod 22 to rotate synchronously. Since the diameter of the hole drilled by the drill bit at the bottom end of the first drill rod 21 is larger than the diameter at the smallest point of the bottom end of the second drill rod 22, it can ensure that the second drill rod 22 can drill a hole with a larger diameter again based on the hole drilled by the first drill rod 21.

[0051] like Figure 1-2 and Figure 4 As shown, the rod body portion of the second drill rod 22 is also equipped with several groups of double protection mechanisms 4, which include a connecting frame 41 fixedly installed on the second drill rod 22; an elastic limiting rod 42 symmetrically and fixedly connected to the connecting frame 41; a movable frame 43 movably mounted on the elastic limiting rod 42 and located inside the second drill rod 22; and a four-link assembly 44 movably connected to the movable frame 43 toward the side of the connecting frame 41.

[0052] By adopting the above scheme, the movable frame 43 is squeezed during the downward movement of the first drill rod 21, and the four-bar assembly 44 is driven to move outward as a whole, and the outward end of the four-bar assembly 44 is abutted against the inner wall of the hole drilled by the second drill rod 22, thereby playing a supporting role for the entire device.

[0053] like Figure 5 As shown in FIGS. 7-9 , the four-link assembly 44 includes a slider 441 movably connected to the inside of the movable frame 43, two sets of connecting rods 442 are hinged inside the slider 441, a pressure plate 443 is hinged at one end of the connecting rod 442 away from the slider 441, and protrusions 444 are symmetrically fixed on both sides of the slider 441;

[0054] The connecting rod 442 is inclined downward from the end close to the slider 441 toward the end of the pressing plate 443, and the connecting rod 442 cannot rotate after rotating to the horizontal. The pressing plate 443 is also provided with saw teeth inclined toward the inner wall of the channel on the side away from the connecting rod 442.

[0055] By adopting the above solution, the connecting rod 442 is inclined toward the pressing plate 443 and cooperates with the sawtooth design on the pressing plate 443. When the connection between the first drill rod 21 and the second drill rod 22 collapses, the second drill rod 22 will drive the movable frame 43 and the slider 441 to have a downward trend, so that the bottom end of the connecting rod 442 can push the pressing plate 443 to close to the inner wall of the hole, further preventing the device from falling into the underground cavity.

[0056] It is worth noting that when people need to take the device out of the hole, and cooperate with the one-way serrations on the pressure plate 443, the connecting pipe 11 will drive the four-link assembly 44 to move upward as a whole through the second drill rod 22 and the movable frame 43.

[0057] like Figure 5 and Figure 7-9 As shown, the movable frame 43 is symmetrically provided with guide grooves 431 for the four-link assembly 44 to slide therein, and the movable frame 43 is also fixedly connected with an arc-shaped spring piece 432 for supporting the protrusion 444;

[0058] The guide groove 431 includes a second vertical groove 4311 and an oblique groove 4312 connected thereto, wherein the bottom end of the oblique groove 4312 is connected to the outside and the opening of the oblique groove 4312 is greater than the height of the protrusion 444;

[0059] By adopting the above scheme, when the device faces an underground cavity, people are taking the device out of the channel. At this time, if the pressure plate 443 is blocked by the protruding stones on the inner wall of the channel when it moves upward, making the four-bar assembly 44 unable to move as a whole, the movable frame 43 inside the second drill rod 22 will continue to move upward, and relative to the movable frame 43, the protrusion 444 will squeeze the arc-shaped spring piece 432 in the movable frame 43 and move downward along the second vertical groove 4311, and finally the protrusion 444 will detach from the movable frame 43 and the second drill rod 22 from the inclined groove 4312, thereby facilitating the removal of the main body of the device.

[0060] The working principle and use process of the present invention:

[0061] When the device is drilling, the bottom end of the first drill rod 21 contacts the ground first, and the connecting tube 11 moves downward to drive the first ratchet 31 to move downward and engage with the spring 33. At the same time, the second drill rod 22 also moves downward, so that the fixing block 25 is stuck in the limiting groove 24. At this time, the driving mechanism drives the transmission assembly 1 to rotate, and the first ratchet 31 and the spring 33 cooperate to drive the first drill rod 21 to rotate. At the same time, the fixing block 25 and the limiting groove 24 cooperate to make the limiting groove 24 rotate. At this time, both the first drill rod 21 and the limiting groove 24 can perform drilling operations;

[0062] When the first drill rod 21 is drilling downward and faces an underground cavity, the first drill rod 21 will be downwardly moved by the elastic force of the spring 33, so that the first drill rod 21 drives the first second ratchet 32 ​​to disengage from the meshing with the first ratchet 31. At this time, the first drill rod 21 loses power and stops rotating. The downward movement of the first drill rod 21 will also drive the fixing block 25 to disengage from the limiting groove 24 to stop the limiting groove 24 from rotating. At this time, under the action of the gravity of the connecting pipe 11, the ball 13 will contact the bottom of the annular cavity 23 and slip inside the annular cavity 23. Fig.10 As shown, the second drill rod 22 that stops rotating will support the transmission assembly 1 to prevent the entire device from falling;

[0063] At the same time, the first drill rod 21 will squeeze the movable frame 43 during the downward process, driving the four-link assembly 44 to move outward as a whole. When the pressure plate 443 is separated from the second drill rod 22, the pressure plate 443 abuts against the inner wall of the hole drilled by the second drill rod 22. Since the bottom of the first drill rod 21 lacks support, when the device as a whole has a downward trend, the four-link assembly 44 as a whole also has a downward trend, but since the pressure plate 443 abuts against the inner wall of the hole and cannot move downward, when the slider 441 moves downward, it will drive the top end of the connecting rod 442 to move downward and squeeze the pressure plate 443 at its bottom to abut against the inner wall of the hole, further improving the safety of the device when facing an underground cavity.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mine underground soil exploration device, comprising a transmission assembly (1), wherein the transmission assembly (1) comprises a connecting pipe (11) and a connecting plate (12) fixedly sleeved on the bottom thereof, characterized in that: Also includes: A drilling assembly (2) which is sleeved on the bottom of the connecting pipe (11); A ratchet assembly (3) installed between the transmission assembly (1) and the drilling assembly (2); The drilling assembly (2) comprises a first drill rod (21) and a second drill rod (22) movably connected to the bottom of the connecting pipe (11); the top of the first drill rod (21) is movably connected to the inside of the second drill rod (22); the top and bottom of the second drill rod (22) are respectively provided with an annular cavity (23) and a plurality of limiting grooves (24); and a fixing block (25) is provided in the middle of the first drill rod (21); The connection disk (12) has a circular array inside and is movably connected to a ball bearing (13), and the two are cooperatively installed in the annular cavity (23) to reduce friction when in contact with the annular cavity (23); The ratchet assembly (3) comprises a first ratchet (31) and a second ratchet (32) respectively fixed to the bottom end of the connecting tube (11) and the top end of the first drill rod (21); a spring (33) is provided between the top of the first drill rod (21) and the bottom of the connecting tube (11); When the bottom end of the fixed block (25) contacts the stratum, the connecting pipe (11) moves downward to drive the first ratchet (31) and the second drill rod (22) downward, and the first ratchet (31) and the second ratchet (32) are engaged in one direction, and the downward movement of the second drill rod (22) enables the fixed block (25) to enter the limiting groove (24).

2. The coal mine underground soil exploration equipment according to claim 1, characterized in that: The ball (13) passes through the connecting plate (12), and the diameter of the ball (13) is smaller than the height of the annular cavity (23); Before and after the bottom end of the first drill rod (21) contacts the ground, the balls (13) are respectively connected in a rolling manner to the top and bottom of the annular cavity (23).

3. The underground soil exploration equipment for coal mines according to claim 1, characterized in that: The number of the limiting grooves (24) is equal to the number of the fixing blocks (25), and the limiting grooves (24) include a first vertical groove (241) and a horn groove (242) below which is in communication with the first vertical groove (241); The sum of the arcs of the bottom ends of the plurality of horn grooves (242) is equal to 360°, and the top end of the fixing block (25) is conical.

4. The underground soil exploration equipment for coal mines according to claim 1, characterized in that: The bottom ends of the first drill rod (21) and the second drill rod (22) are drill bits; The diameter of the hole drilled by the drill bit at the bottom end of the first drill rod (21) is also larger than the diameter at the smallest point of the bottom end of the second drill rod (22).

5. The underground soil exploration equipment for coal mines according to claim 1, characterized in that: The bottom of the connecting tube (11) is divided into two layers, an inner layer and an outer layer, wherein the spring (33) is arranged between the bottom end of the inner layer of the connecting tube (11) and the first drill rod (21), and the first ratchet (31) is fixedly connected to the bottom end of the outer layer of the connecting tube (11).

6. The underground soil exploration equipment for coal mines according to claim 1, characterized in that: The rod body of the second drill rod (22) is also equipped with a plurality of sets of double protection mechanisms (4), and the double protection mechanisms (4) include a connecting frame (41) fixedly installed on the second drill rod (22); An elastic limiting rod (42) symmetrically and fixedly connected to the connecting frame (41); A movable frame (43) movably sleeved on the elastic limiting rod (42) and located inside the second drilling rod (22); A four-link assembly (44) is movably connected to the movable frame (43) on one side facing the connecting frame (41).

7. The underground soil exploration equipment for coal mines according to claim 6, characterized in that: The four-link assembly (44) comprises a slider (441) movably connected to the inside of the movable frame (43), two groups of connecting rods (442) are hinged inside the slider (441), a pressure plate (443) is hinged at one end of the connecting rod (442) away from the slider (441), and bumps (444) are symmetrically fixed on both sides of the slider (441).

8. The underground soil exploration equipment for coal mines according to claim 7, characterized in that: The connecting rod (442) is inclined downward from one end close to the slider (441) toward one end of the pressure plate (443), and the connecting rod (442) cannot rotate after rotating to the horizontal position. The pressure plate (443) is also provided with saw teeth inclined toward the inner wall of the channel on the side away from the connecting rod (442).

9. The underground soil exploration equipment for coal mines according to claim 8, characterized in that: The movable frame (43) is symmetrically provided with guide grooves (431) inside which the four-link assembly (44) can slide. The movable frame (43) is also fixedly connected with an arc-shaped spring piece (432) for supporting the protrusion (444).

10. The underground soil exploration equipment for coal mines according to claim 9, characterized in that: The guide groove (431) comprises a second vertical groove (4311) and an inclined groove (4312) connected thereto below, the bottom end of the inclined groove (4312) being connected to the outside and the opening of the inclined groove (4312) being larger than the height of the protrusion (444).

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