A highway construction rock drilling and sampling device

Abstract

The present invention belongs to the field of geotechnical drilling equipment, and discloses a rock drilling and sampling device for road construction, comprising: a frame; a drill pipe assembly disposed on the frame, the drill pipe assembly including an inner shaft rod and an outer sleeve rod, and the outer sleeve rod is rotatably sleeved outside the inner shaft rod; at least a first driving mechanism for driving the outer sleeve rod to rotate; and a drill bit assembly connected to the drill pipe assembly. Through the drill pipe assembly and the drill bit assembly of the present invention, the sampling member and the drilling member of the drill bit assembly can achieve the state switching through the cooperation of the movable ratchet assembly and the limiting tooth part. When the drilling member rotates out reversely after drilling, it can drive the movable tightening member to move by relative rotation with the sampling member, and the movable tightening part of the sampling member can be tightened to clamp the sample, thereby increasing the friction force during the sampling process, making the sample not easy to fall off, and the structure is simpler and easier to operate.

Description

Technical Field

[0001] The present invention belongs to the technical field of geotechnical drilling equipment, and particularly relates to a rock drilling and sampling device for highway construction. Background Art

[0002] In highway engineering construction, it is necessary to randomly select points for sampling inspection of the completed or pre-construction road, so as to arrange the construction plan or ensure the quality and safety of the road according to the rock and soil layer conditions. At this time, a rock drilling and sampling device is needed to take samples, and various data of the sample are detected, and the rock layer conditions or quality are judged through the analysis of the data detection. However, in the process of rock drilling and sampling for highway construction, due to the large weight of the sample and the limited friction between the sample and the sampling drill bit, when the drill bit is taken out, the sample is likely to fall off, resulting in inconvenient sampling.

[0003] In the prior art, in order to increase the friction between the sample and the sampling drill bit, one technical solution is to set a conical insert. The conical insert is inserted downward along the conical groove on the inner side wall of the sampling drill cylinder between the sampling sleeve and the cylindrical sample, and an interference fit method is used to increase the friction between the sampling drill cylinder and the cylindrical sample. However, the conical insert needs to be operated separately to increase the friction between the sample and the sleeve, which makes the operation steps complex, thereby reducing the sampling efficiency of the equipment and having certain use defects. Another technical solution is to increase the friction between the sampling drill cylinder and the sample through the impurities in the cooling water during the recovery process by spraying and settling the cooling water. However, the cooling water will also increase the lubricity between the sample and the sleeve during the recovery process, resulting in an unsatisfactory effect of increasing the friction, and a relatively complex cooling water recovery mechanism also needs to be set, and the structure is relatively complex. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a rock drilling and sampling device for highway construction to solve the problem that the sample of the existing rock drilling and sampling device is easy to fall off from the sleeve.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A rock drilling and sampling device for highway construction, comprising:

[0007] A frame;

[0008] A drill pipe assembly arranged on the frame, the drill pipe assembly includes an inner shaft rod and an outer sleeve rod, and the outer sleeve rod is rotatably sleeved outside the inner shaft rod;

[0009] At least a driving mechanism one for driving the outer sleeve rod to rotate;

[0010] A drill bit assembly connected to the drill pipe assembly, the drill bit assembly including a sampling member, a drilling member, and a movable tightening member. The interior of the drilling member is hollow. The sampling member is rotatably sleeved inside the drilling member and fixedly connected to the inner shaft rod. The drilling member is fixedly connected to the outer sleeve rod. A limiting tooth portion distributed circumferentially around the inner shaft rod is provided between the sampling member and the inner shaft rod. An active ratchet component meshing with the limiting tooth portion is provided inside the drilling member. The active ratchet component cooperates with the limiting tooth portion to enable the drilling member to have at least a first state and a second state. In the first state, the drilling member and the sampling member are circumferentially stopped. In the second state, the drilling member can only rotate in a first direction relative to the sampling member. The sampling member has an active tightening portion, and the active tightening portion includes petal-shaped active jaws distributed at intervals in the circumferential direction. The movable tightening member is movably sleeved outside the active tightening portion and is circumferentially stopped. The movable tightening member is in threaded cooperation with the inner wall of the drilling member to enable the movable member to be switched axially between a tightened position and a tightened release position. When the movable tightening member is in the tightened position, the gap between the active jaws is reduced and they enclose inward to clamp the sample.

[0011] In a possible implementation, the inner diameter of the movable tightening member gradually changes axially, the outer diameter of the active tightening portion gradually changes axially, the direction of gradual change of the inner diameter of the movable tightening member from large to small is the same as the direction of gradual change of the outer diameter of the active tightening portion from large to small, and the movable tightening member is located at the tail end of the active tightening portion when in the tightened unlocking position.

[0012] In a possible implementation, the thickness of the active tightening portion is less than the main body thickness of the sampling member to form an active cavity for the movable tightening member to move axially between the active tightening portion and the drilling member.

[0013] In a possible implementation, at least one outer wall of the active jaws of the active tightening portion is provided with guiding rib strips in a first direction parallel to the axial direction, and the inner wall of the movable tightening member is provided with guide grooves slidably cooperating with the guiding rib strips.

[0014] In a possible implementation, the active ratchet component cooperates with the limiting tooth portion to enable the drilling member to also have a third state. In the third state, the drilling member can only rotate in a second direction relative to the sampling member, and the second direction is opposite to the first direction.

[0015] In a possible implementation, the active ratchet component includes a limiting rod, a first spring, a transmission cam, and a shift lever. There are two limiting rods which are rotatably arranged on the inner wall of the drilling member. The limiting rod has a limiting portion that meshes and cooperates with the limiting tooth portion. The two limiting rods are respectively cooperated on both sides of the limiting tooth portion through the limiting portion. A transmission cam is arranged between the two limiting rods, and the transmission cam is used to drive the limiting portion of the limiting rod away from the limiting tooth portion. A first spring that urges the limiting rod to approach the limiting tooth portion is arranged between the limiting rod and the inner wall of the drilling member. The shift lever is arranged outside the sampling member and is connected to the transmission cam through a rotating shaft.

[0016] In a possible implementation, it further includes a first connecting sleeve sleeved outside the outer sleeve rod. The outer periphery of the outer sleeve rod is provided with an axially distributed first sliding tooth portion. The inner side of the first connecting sleeve is provided with a second sliding tooth portion. The second sliding tooth portion meshes and cooperates with the first sliding tooth portion. The outer sleeve rod is rotatably connected to the frame through the first connecting sleeve. A transmission portion is arranged on the outer side of the first connecting sleeve, and the transmission portion is in transmission cooperation with the driving mechanism one to drive the first connecting sleeve to rotate.

[0017] In a possible implementation, it further includes a driving mechanism two. The driving mechanism two is in transmission connection with the inner shaft rod and drives the drill pipe assembly to lift axially.

[0018] In a possible implementation, it further includes a guiding mechanism. The guiding mechanism includes a second connecting sleeve, a guiding member, and an elastic member. The guiding member is slidably connected to the frame along the lifting direction of the drill pipe assembly. Both ends of the guiding member are respectively rotatably connected to the second connecting sleeve sleeved outside the outer sleeve rod. The inner wall of the second connecting sleeve is provided with a third sliding tooth portion along the circumferential direction. The third sliding tooth portion cooperates with the first sliding tooth portion. An elastic member is sleeved outside the guiding member, and the bottom of the elastic member abuts against the lifting frame.

[0019] In a possible implementation, the frame includes a base, a frame body, and a driving mechanism three. The base is provided with a channel that penetrates up and down for the drill pipe assembly to pass through. The base is provided with a first thread transmission portion distributed along the circumferential direction. The frame body is provided with a second thread transmission portion distributed along the circumferential direction. The first thread transmission portion is in thread cooperation with the second thread transmission portion. The driving mechanism three is in transmission connection with the frame body to drive the frame body to rotate.

[0020] In a possible implementation, a water tank is arranged inside the base. The water tank is connected to a spraying device arranged on the circumferential inner wall of the base channel through a conveying pipeline.

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

[0022] The rock drilling and sampling device for road construction of the present invention, through the drill pipe assembly and the drill bit assembly, the sampling member and the drilling member of the drill bit assembly can achieve the state switching through the cooperation of the movable ratchet assembly and the limiting tooth part. When the drilling member rotates out reversely after drilling, it can drive the movable tightening member to move by relative rotation with the sampling member, and enable the movable tightening part of the sampling member to tighten and clamp the sample, so as to increase the friction force during the sampling process, make the sample not easy to fall off, and the structure is simpler and easier to operate.

[0023] Moreover, after the drill bit assembly samples, through the adjustment of the movable ratchet assembly, the driving mechanism I drives the drilling member to rotate forward relative to the sampling member, so that the movable tightening part can release the clamping of the sample, and then it is convenient to take out the sample, and the operation is convenient and fast.

[0024] At the same time, the outer sleeve rod and the first connecting sleeve on the outside are matched through a sliding tooth structure. When the driving mechanism I drives the outer sleeve rod to rotate, it can also facilitate the driving mechanism II to drive the drill pipe assembly to perform a lifting action, without mutual interference, and the structural design is more reasonable. And through the guiding mechanism, it can rise and fall with the rise and fall of the drill pipe assembly. Especially when the drill pipe assembly descends and drills to a greater depth, the follow-up descent of the guiding mechanism can also play a good guiding role and a centering role for the drill pipe assembly, making the drill pipe drilling more accurate and more stable.

[0025] In addition, the frame body of the frame can be lifted under the drive of the driving mechanism III, so that it is convenient to adjust the height according to the drilling depth and can better adapt to different working conditions. Brief Description of the Drawings

[0026] Figure 1 is a cross-sectional schematic view of a rock drilling and sampling device for road construction;

[0027] Figure 2 is Figure 1 a partial enlarged schematic view of;

[0028] Figure 3 is a front view of a rock drilling and sampling device for road construction;

[0029] Figure 4 is a cross-sectional schematic view of a rock drilling and sampling device for road construction during initial drilling;

[0030] Figure 5 is a cross-sectional schematic view of a rock drilling and sampling device for road construction when drilling is in place;

[0031] Figure 6 is a cross-sectional schematic view of the drill bit assembly of a rock drilling and sampling device for road construction;

[0032] Figure 7A cross-sectional schematic view of a movable ratchet assembly of a rock drilling and sampling device for highway construction;

[0033] Figure 8 An exploded schematic view of a drill bit assembly of a rock drilling and sampling device for highway construction.

[0034] In the figure: 1 - frame; 11 - frame body; 111 - second thread transmission part; 112 - fourth sliding tooth part; 113 - internal thread; 12 - base; 121 - first thread transmission part; 122 - external thread; 123 - hatch door; 124 - water tank; 125 - spraying device; 126 - protective door; 13 - mounting plate; 2 - driving mechanism one; 21 - driving motor one; 22 - gear two; 3 - drill pipe assembly; 31 - inner shaft rod; 32 - outer sleeve rod; 33 - first connecting sleeve; 34 - transmission part; 35 - first sliding tooth part; 4 - drill bit assembly; 41 - drilling component; 411 - shielding flange; 412 - drill teeth; 413 - movable cavity; 42 - sampling component; 421 - movable tightening part; 4211 - movable clamping jaws; 4212 - guiding rib; 43 - movable tightening member; 431 - guiding groove; 44 - movable ratchet assembly; 441 - shifting rod; 442 - limiting rod; 443 - transmission cam; 444 - first spring; 45 - limiting tooth part; 5 - guiding mechanism; 51 - guiding component; 52 - elastic member; 53 - second connecting sleeve; 6 - driving mechanism two; 61 - driving motor two; 62 - screw rod; 63 - thread transmission sleeve; 64 - connecting rod member; 7 - driving mechanism three. Detailed implementation manners

[0035] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific implementation manners.

[0036] Please refer to Figure 1-8 As shown, an embodiment of the present application provides a rock drilling and sampling device for highway construction, including: a frame 1; a drill pipe assembly 3 arranged on the frame 1, the drill pipe assembly 3 includes an inner shaft rod 31 and an outer sleeve rod 32, and the outer sleeve rod 32 is rotatably sleeved outside the inner shaft rod 31; at least a driving mechanism one 2 for driving the outer sleeve rod 32 to rotate; and a drill bit assembly 4 connected to the drill pipe assembly 3.

[0037] Among them, the drill pipe assembly 3 is connected to the drill bit assembly 4 as a whole. The drill bit assembly 4 is used for drilling and sampling, while the drill pipe assembly 3 is used to rotate and / or lift together with the drill bit assembly 4. The outer sleeve 32 of the drill pipe assembly 3 is rotatably sleeved outside the inner shaft 31. By the relative rotation setting, it is convenient for the first driving mechanism 2 to drive the outer sleeve 32 to rotate and drive the drilling member 41 to rotate, while the inner shaft 31 is relatively fixed, so that it is convenient to cooperate with the movable tightening member 43 and the movable tightening part 421 to clamp the sample. The first driving mechanism 2 can adopt an existing driving mechanism that lifts the drill pipe assembly 3 while driving the outer sleeve 32 to rotate.

[0038] Please refer to Figure 1 , Figure 6 and Figure 8 As shown, in the embodiment of the present application, the drill bit assembly 4 includes a sampling member 42, a drilling member 41, and a movable tightening member 43. The interior of the drilling member 41 is hollow. The sampling member 42 is rotatably sleeved inside the drilling member 41 and fixedly connected to the inner shaft 31. The drilling member 41 is fixedly connected to the outer sleeve 32. A limiting tooth portion 45 distributed circumferentially around the inner shaft 31 is provided between the sampling member 42 and the inner shaft 31. An active ratchet assembly 44 meshing with the limiting tooth portion 45 is provided inside the drilling member 41. The active ratchet assembly 44 cooperates with the limiting tooth portion 45 to enable the drilling member 41 to have at least a first state and a second state. In the first state, the drilling member 41 and the sampling member 42 are circumferentially stopped. In the second state, the drilling member 41 can only rotate in the first direction relative to the sampling member 42. The sampling member 42 has a movable tightening part 421. The movable tightening part 421 includes movable clamping jaws 4211 distributed at intervals along the circumference and shaped like petals. The movable tightening member is movably sleeved outside the movable tightening part 421 and is circumferentially stopped. The movable tightening member 43 is in threaded cooperation with the inner wall of the drilling member 41 to enable the movable member to axially switch between a tightening position and a tightening release position. When the movable tightening member 43 is in the tightening position, the gap between the movable clamping jaws 4211 is reduced and they enclose inward to clamp the sample.

[0039] The sampling component 42 of the drill bit assembly 4 is of a sleeve-like structure, which is used for the rock and soil to enter during drilling, and then the drill bit assembly 4 can be screwed out of the borehole to achieve sampling. The drilling component 41 is used to form a borehole in the rock and soil layer to facilitate the sampling component 42 to take samples. The drilling component 41 is also of a sleeve-like structure, and drill teeth 412 are arranged circumferentially on the bottom end face thereof. The drill teeth 412 can be screwed in to form a borehole when the drill bit component rotates at a high speed. The sampling frame is fixedly connected to the inner shaft rod 31, and the drilling component 41 is fixedly connected to the outer sleeve rod 32, so that it is convenient to drive the drilling component 41 through the first driving mechanism 2 and make it rotate relative to or synchronously with the sampling component 42. A limiting tooth part 45 is arranged between the inner shaft rod 31 and the sampling component 42. The limiting tooth part 45 and the movable ratchet tooth assembly 44 can form a structure similar to a ratchet and ratchet tooth. The movable ratchet tooth assembly 44 is used to adjust whether to perform one-way limiting and / or circumferential stopping on the sampling component 42. In this way, it is convenient to control the rotation direction and whether to be stationary of the drilling component 41 relative to the sampling component 42. Furthermore, the movable ratchet tooth assembly 44 and the limiting tooth part 45 can enable the drilling component 41 to have at least a first state and a second state. In the first state, the drilling component 41 and the sampling component 42 are circumferentially stopped. In this state, when the first driving mechanism 2 drives the drilling component 41 to rotate and drill, the circumferentially stopped sampling component 42 rotates together with the drilling component 41, which can avoid the premature action of the movable tightening part 43. In the second state, the drilling component 41 can only rotate in the first direction relative to the sampling component 42. The first direction can be the direction opposite to the rotation direction during drilling. For example, when the drill bit assembly 4 is screwed out of the borehole, in the second state, the screwing-in assembly can not only facilitate the screwing out of the borehole, but also drive the inner movable tightening part 421 to act by rotating in the first direction. Since the movable tightening part 43 is in threaded cooperation with the inner wall of the drilling component 41 and is circumferentially stopped with the movable tightening part 421 but can slide axially, in this way, when the drilling component 41 rotates in the first direction, the movable tightening part 43 can move axially from the unlocking position to the tightening position. During this process, the plurality of petal-like movable jaws 4211 spaced apart by the movable tightening part 421 can be gathered to achieve tightening, and then the inner sample can be clamped. At the same time, the relatively large weight of the sample also makes the gravity of the sampling component 42 relatively large. In this way, it is convenient for the screwing-in component to rotate relative to the sampling component 42 and drive the movable tightening part 43 to perform a tightening action, so as to increase the friction between the sample and the sampling component 42, make the sample more firmly controlled in the sampling component 42 and not easy to fall off. The structural design is reasonable and no additional operation is required.

[0040] Through the above technical solution, the sampling member 42 and the drilling member 41 of the drill bit assembly 4 can achieve the state switching of the sampling member 42 and the drilling member 41 through the cooperation of the movable ratchet assembly 44 and the limiting tooth portion 45. When the drilling member 41 rotates out reversely after drilling, it can drive the movable tightening member 43 to move by relative rotation with the sampling member 42, and the movable tightening portion 421 of the sampling member 42 can tighten and clamp the sample, thereby increasing the friction during the sampling process, making the sample not easy to fall off, and the structure is simpler and easier to operate.

[0041] In an embodiment, the inner diameter of the movable tightening member 43 gradually changes along the axial direction, the outer diameter of the movable tightening portion 421 gradually changes along the axial direction, the gradual change direction of the inner diameter of the movable tightening member 43 from large to small is the same as the gradual change direction of the outer diameter of the movable tightening portion 421 from large to small, and the movable tightening member 43 is located at the tail end of the movable tightening portion 421 when in the tightening and unlocking position.

[0042] The movable tightening member 43 is a nested structure, and the inner diameter of its inner cavity wall is gradually arranged along the axial direction, that is, the inner surface is a conical surface, one end is larger and the other end has a smaller diameter. At the same time, the outer diameter of the movable tightening portion 421 is also gradually arranged, and the gradual change direction of the inner diameter of the movable tightening member 43 from large to small is the same as the gradual change direction of the outer diameter of the movable tightening portion 421 from large to small. In this way, a taper fit can be formed for extrusion and tightening. When the movable tightening member 43 moves from bottom to top, since the outer diameter of the movable tightening portion 421 gradually increases from bottom to top, the movable tightening member 43 can gradually squeeze the movable jaw 4211 to deform it inward, thereby realizing the clamping of the sample.

[0043] Furthermore, in order to facilitate the better movement of the movable tightening member 43 between the sampling member 42 and the drilling member 41, the thickness of the movable tightening portion 421 is less than the main body thickness of the sampling member 42 to form a movable cavity 413 for the movable tightening member 43 to move axially between the movable tightening portion 421 and the drilling member 41. In this way, the movable tightening member 43 can move up and down more conveniently in the movable cavity 413. Of course, when the movable tightening member 43 moves to the extreme position, the friction between the sampling member 42 and the drilling member 41 will increase, which will cause the sampling member 42 and the drilling member 41 to be stopped circumferentially, and this can also further maintain the stability of the internal sample during the process of screwing out of the drill hole.

[0044] In order to better realize the axial movement and circumferential stop of the movable tightening member 43, furthermore, at least one outer wall of the movable jaw 4211 of the movable tightening portion 421 is provided with a guiding rib 4212 along a first direction parallel to the axial direction, and the inner wall of the movable tightening member 43 is provided with a guiding groove 431 that slidably cooperates with the guiding rib 4212.

[0045] In the specific implementation process, a shielding flange 411 extending radially inward is provided at the bottom end of the drilling member 41, and the inner diameter of the shielding flange 411 is less than or equal to the inner diameter of the bottom end of the movable tightening portion 421 in the free state, so as to shield the gap between the movable tightening portion 421, the movable tightening member 43 and the drilling member 41 and prevent gravel or soil gravel from entering the gap.

[0046] In order to facilitate the extraction of the sample, the movable ratchet assembly 44 cooperates with the limiting tooth portion 45 to enable the drilling member 41 to further have a third state. In the third state, the drilling member 41 can only rotate in the second direction relative to the sampling member 42, and the second direction is opposite to the first direction.

[0047] The drilling member 41 has a third state through the adjustment of the movable ratchet assembly 44. In the third state, the drilling member 41 can only rotate in the second direction opposite to the first direction. Since the drilling member 41 rotates in the first direction when the movable tightening member 43 is tightened, on the contrary, by reversely driving the outer sleeve rod 32 through the driving mechanism 1, the reverse rotation of the drilling member 41 can be realized, and then the movable tightening member 43 can be switched to the unlocking position, so as to facilitate the extraction of the sample from the sampling member 42.

[0048] In a preferred implementation structure of the movable ratchet assembly 44, as shown in combination with Figure 6 and Figure 7 the movable ratchet assembly 44 includes a limiting rod 442, a first spring 444, a transmission cam 443 and a lever 441. There are two limiting rods 442 which are rotatably arranged on the inner wall of the drilling member 41. The limiting rod 442 has a limiting portion meshing with the limiting tooth portion 45. The two limiting rods 442 are respectively cooperated on both sides of the limiting tooth portion 45 through the limiting portion. A transmission cam 443 is arranged between the two limiting rods 442, and the transmission cam 443 is used to drive the limiting portion of the limiting rod 442 away from the limiting tooth portion 45. A first spring 444 for driving the limiting rod 442 to approach the limiting tooth portion 45 is arranged between the limiting rod 442 and the inner wall of the drilling member 41. The lever 441 is arranged outside the sampling member 42 and is connected to the transmission cam 443 through a rotating shaft.

[0049] In this way, the operator can rotate the lever 441 outside the drilling member 41 to make the transmission cam 443 rotate. The convex part of the transmission cam 443 can be rotated to either side. When it is rotated to one side, the limiting rod 442 on that side will move away from the limiting tooth part 45, so that the limiting part of the limiting rod 442 can be disengaged from the engagement with the limiting tooth part 45. Thus, for the limiting rod 442 on that side, the drilling member 41 can rotate freely. When the transmission cam 443 rotates to the other side, the limiting part of the limiting rod 442 on that side will also be disengaged from the limiting relationship with the limiting tooth part 45. However, through the arrangement of elastic members 52 such as springs, when the transmission cam 443 rotates to one side and the limiting rod 442 on that side is disengaged from the limit, the limiting rod 442 on the other side, since it is not abutted by the convex part of the transmission cam 443, will engage with the limiting tooth part 45 under the action of the first spring 444. At this time, the drilling member 41 realizes one-way limitation, such as limitation in the first direction, and conversely, limitation in the second direction can be realized. When the transmission cam 443 is centered and does not contact the limiting rods 442 on both sides, the limiting parts of the limiting rods 442 on both sides are engaged with the limiting tooth part 45, and at this time, the drilling member 41 and the sampling member 42 are circumferentially stopped.

[0050] In the embodiment of the present application, in combination with Figure 1 and Figure 2 as shown, it further includes a first connecting sleeve 33 sleeved outside the outer sleeve rod 32. The outer periphery of the outer sleeve rod 32 is provided with an axially distributed first sliding tooth part 35. The inner side of the first connecting sleeve 33 is provided with a second sliding tooth part, and the second sliding tooth part is meshed and cooperated with the first sliding tooth part 35. The outer sleeve rod 32 is rotationally connected to the frame 1 through the first connecting sleeve 33. The outer side of the first connecting sleeve 33 is provided with a transmission part 34, and the transmission part 34 is in transmission cooperation with the driving mechanism 1-2 to drive the first connecting sleeve 33 to rotate.

[0051] The first sliding tooth part 35 on the outer sleeve rod 32 can realize circumferential stopping through cooperation with the second sliding tooth part on the inner side of the first connecting sleeve 33, and thus can rotate under the drive of the driving mechanism 1-2. At the same time, it can also facilitate the drill pipe assembly 3 including the outer sleeve rod 32 to move upward relative to the driving mechanism 1-2 without mutual interference. In this way, the transmission of the drill pipe assembly 3 can be realized through the conventional driving mechanism 1-2. Since the outer sleeve rod 32 is rotationally connected to the frame 1 through the first connecting sleeve 33, the first connecting sleeve 33 and the outer sleeve rod 32 can rotate synchronously, and in cooperation with the transmission part 34 on the first connecting sleeve 33, the transmission cooperation with the driving mechanism 1-2 can be realized. In the specific implementation process, the transmission part 34 on the first connecting sleeve 33 is a first gear, and the first gear is fixedly sleeved outside the first connecting sleeve 33. Correspondingly, the driving mechanism 1-2 can adopt a driving motor 1-21 to realize transmission through meshing with the first gear.

[0052] On this basis, in combination with Figure 1 、Figure 4 and Figure 5 As shown, it may further include a second driving mechanism 6. The second driving mechanism 6 is rotatably connected to the inner shaft rod 31 and drives the drill pipe assembly 3 to move up and down axially. The second driving mechanism 6 is used to drive the drill pipe assembly 3 to move up and down. It is rotatably connected to the inner shaft rod 31. When lifting is required, the second driving mechanism 6 only needs to drive the inner shaft rod 31 to lift or lower, so that the entire drill pipe assembly 3 can be lifted or lowered. In this way, the transmission can be carried out more conveniently through a driving method separate from the first driving mechanism 2.

[0053] In a specific implementation process, the second driving mechanism 6 may include a screw rod 62, a threaded transmission sleeve 63, a connecting rod member 64, and a second driving motor 61. The screw rod 62 is erected on the frame 1, and the threaded transmission sleeve 63 is sleeved on the outside of the screw rod 62 in a threaded manner. The threaded transmission sleeve 63 is rotatably connected to the inner shaft rod 31 through the connecting rod member 64, and the screw is driven to rotate by the second driving motor 61. In this way, when the second driving motor 61 drives the screw rod 62 to rotate, the threaded transmission sleeve 63 can move up and down along the axial direction of the screw rod 62, and then drive the drill pipe assembly 3 to lift and lower synchronously. Specifically, a slider is further provided on the other side of the threaded transmission sleeve 63 relative to the connecting rod member 64, and it is slidably connected to the inner wall of the frame 1 through the slider, so that the lifting movement can be more stable.

[0054] In order to enable the drill pipe assembly 3 to have better centering performance when drilling to a greater depth, in combination with Figure 1 、 Figure 4 and Figure 5 As shown, it may further include a guiding mechanism 5. The guiding mechanism 5 includes a second connecting sleeve 53, a guiding member 51, and an elastic member 52. The guiding member 51 is slidably connected to the frame 1 along the lifting direction of the drill pipe assembly 3. Both ends of the guiding member 51 are rotatably connected to the second connecting sleeve 53 sleeved on the outside of the outer sleeve rod 32. The inner wall of the second connecting sleeve 53 is provided with a third sliding tooth portion in the circumferential direction. The third sliding tooth portion cooperates with the first sliding tooth portion 35. The guiding member 51 is sleeved with an elastic member 52 outside, and the bottom of the elastic member 52 abuts against the lifting frame.

[0055] The guide member 51 of the guide mechanism 5 is slidably matched with the frame 1, for example, it slides through the mounting plate 13 on the frame 1, and the two ends of the guide member 51 are respectively rotatably connected to the second connecting sleeve 53, and the second connecting sleeve 53 is meshed with the first sliding tooth portion 35 of the outer rod 32 through the third sliding tooth portion, so that the second connecting sleeve 53 can be stopped in the circumferential direction with the outer rod 32 but can slide relatively in the longitudinal direction, and the guide member 51 rotatably connected to the second connecting sleeve 53 can also slide up and down and stop in the circumferential direction at the same time. In this way, when the outer rod 32 rotates, the guide member 51 is stopped in the circumferential direction but can slide up and down, so that when the drill rod assembly 3 starts to drill downward, the guide member 51 can not rise and fall with the drill rod assembly 3 through the spring, but the guide member 51 moves relatively to the outer rod When the drill rod assembly 3 reaches the upper limit position 32, the descent of the drill rod assembly will drive the guide assembly to descend at the same time. At this time, the elastic member 52 is compressed at the same time, and the guide member 51 can provide guidance and centering for the lifting and lowering of the drill rod assembly 3 by sliding with the frame 1. When it descends to a greater depth, the guide member 51 also descends to the limit position. At this time, the guide member 51 can provide guidance and centering for the drill rod assembly 3, so that the drill rod assembly 3 remains centered for more accurate drilling. When the drill rod assembly 3 is screwed out after sampling, it gradually moves upward, and the guide member 51 is gradually reset by the spring in the stored force state, so that it can be flexibly guided, and the guiding and centering effects are better, which solves the problem that the longer drill rod assembly 3 cannot be guided and centered when drilling at a greater depth.

[0056] In the embodiments of the present application, Figure 1-Figure 4 As shown, the frame 1 includes a base 12, a frame body 11 and a driving mechanism 3 7, the base 12 is provided with a channel running through from top to bottom for the drill rod assembly 3 to pass through, the base 12 is provided with a first threaded transmission part 121 distributed along the circumferential direction, the frame body 11 is provided with a second threaded transmission part 111 distributed along the circumferential direction, the first threaded transmission part 121 is threadedly matched with the second threaded transmission part 111, and the driving mechanism 3 7 is transmission-connected with the frame body 11 to drive the frame body 11 to rotate.

[0057] The frame 1 can be lifted, and the height adjustment of the drill pipe assembly 3 can be facilitated through lifting for preliminary adjustment. Combining with the lifting of the second driving mechanism 6 can achieve height adjustment at a higher level, which is more convenient. The channel inside the base 12 can facilitate the storage and passage of the drill pipe assembly 3 and the drill bit assembly 4. The base 12 is provided with a first thread transmission part 121, which is an annular structure extending upward and has an external thread 122 on its outer periphery. The main body of the frame 11 is provided with a downward annular flanging to form a lid-like structure. The annular flanging serves as the second thread transmission part 111 and has an internal thread 113 circumferentially arranged on its inner side. The internal thread 113 is in threaded cooperation with the external thread 122, so as to form a connection structure that can be lifted. At the same time, the third driving mechanism 7 can be driven through the gear and the fourth sliding tooth part 112 on the outer wall of the second thread transmission part 111. Through the fourth sliding tooth part 112 distributed along the axial direction, it can rotate while lifting under the condition that the third driving mechanism 7 does not move.

[0058] In order to achieve dust reduction, a water tank 124 is provided inside the base 12. The water tank 124 is connected to a spraying device 125 arranged on the circumferential inner wall of the channel of the base 12 through a conveying pipeline. The spraying device 125 includes an annular mounting bracket and a plurality of spray heads arranged circumferentially on the mounting bracket. Each spray head is connected to a conveying pipeline, and the conveying pipeline is also connected to the water tank 124 through a water pump, so that spraying can be carried out, and the dust in the air during the drilling process can be reduced through spraying.

[0059] Specifically, the base 12 is also provided with a plurality of chambers with hatches 123. Devices such as the water tank 124 and the third driving mechanism 7 can be installed through the chambers. And a notch is provided on one side of the base 12, and a transparent protective door 126 is arranged at the notch. Through the notch, it is convenient for the operator to enter to take out the sample.

[0060] The above is only the preferred implementation mode of the present invention. It should be noted that the above preferred implementation mode should not be regarded as a limitation of the present invention. The protection scope of the present invention should be subject to the scope defined by the claims. For those of ordinary skill in the art of this technology, without departing from the spirit and scope of the present invention, several improvements and refinements can also be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A rock drilling sampling device for highway construction, characterized in that: include: frame; A drill rod assembly is arranged on the frame, the drill rod assembly comprises an inner shaft and an outer shaft, and the inner shaft is rotatably sleeved with the outer shaft; A driving mechanism for at least driving the outer sleeve to rotate; A drill bit assembly connected to the drill rod assembly, the drill bit assembly comprising a sampling component, a drilling component and a movable tightening member, the drilling component is hollow inside, the sampling component is rotatably sleeved in the drilling component and fixedly connected to the inner shaft rod, the drilling component is fixedly connected to the outer sleeve rod, a limiting tooth portion distributed circumferentially around the inner shaft rod is provided between the sampling component and the inner shaft rod, a movable ratchet assembly meshing with the limiting tooth portion is provided in the drilling component, the movable ratchet assembly cooperates with the limiting tooth portion to enable the drilling component to have at least a first state and a second state, and in the first state the drilling component The member and the sampling member are stopped in the circumferential direction, and in the second state, the drilling member can only rotate in the first direction relative to the sampling member; the sampling member has a movable tightening portion, and the movable tightening portion includes movable jaws in the shape of petals that are distributed at intervals along the circumferential direction; the movable tightening member is movably sleeved on the outer side of the movable tightening portion and is stopped in the circumferential direction, and the movable tightening member is threadedly matched with the inner wall of the drilling member so that the movable member can be movably switched between the tightening position and the tightening release position along the axial direction, and when the movable tightening member is in the tightening position, the gap between the movable jaws is reduced and enclosed inward to clamp the sample; The inner diameter of the movable tightening piece gradually changes along the axial direction, and the outer diameter of the movable tightening part gradually changes along the axial direction. The gradual change direction of the inner diameter of the movable tightening piece from large to small is consistent with the gradual change direction of the outer diameter of the movable tightening part from large to small. When the movable tightening piece is in the tightening and unlocking position, it is located at the tail end of the movable tightening part.

2. A highway construction rock drilling sampling device as claimed in claim 1, characterized in that: The thickness of the movable tightening part is smaller than the thickness of the main body of the sampling member, so as to form an active cavity for the movable tightening member to move axially between the movable tightening part and the drilling member.

3. A highway construction rock drilling sampling device as claimed in claim 1, characterized in that: The outer wall of at least one movable clamping claw of the movable tightening part is provided with a guide rib along a first direction parallel to the axial direction, and the inner wall of the movable tightening member is provided with a guide groove which is slidably matched with the guide rib.

4. A highway construction rock drilling sampling device as claimed in claim 1, characterized in that: The movable ratchet assembly cooperates with the limiting tooth portion to enable the drilling member to have a third state. In the third state, the drilling member can only rotate along a second direction relative to the sampling member, and the second direction is opposite to the first direction.

5. A highway construction rock drilling sampling device as claimed in claim 1, characterized in that: The movable ratchet assembly includes a limit rod, a first spring, a transmission cam and a shift rod. The limit rod is provided with two and is rotatably arranged on the inner wall of the drilling component. The limit rod has a limit portion that meshes with the limit tooth portion. The two limit rods are respectively engaged with the two sides of the limit tooth portion through the limit portions. A transmission cam is provided between the two limit rods. The transmission cam is used to drive the limit portion of the limit rod away from the limit tooth portion. A first spring is provided between the limit rod and the inner wall of the drilling component to drive the limit rod close to the limit tooth portion. The shift rod is provided outside the sampling component and is connected to the transmission cam through a rotating shaft.

6. A highway construction rock drilling sampling device as claimed in claim 1, characterized in that: It also includes a first connecting sleeve sleeved on the outer outer rod, the outer periphery of the outer outer rod is provided with an axially distributed first sliding tooth portion, the inner side of the first connecting sleeve is provided with a second sliding tooth portion, the second sliding tooth portion is meshed with the first sliding tooth portion, the outer outer rod is rotatably connected to the frame through the first connecting sleeve, a transmission portion is provided on the outer side of the first connecting sleeve, and the transmission portion is in transmission cooperation with the driving mechanism to drive the first connecting sleeve to rotate.

7. A highway construction rock drilling sampling device as claimed in claim 6, characterized in that: It also includes a second driving mechanism, which is rotatably connected to the inner shaft and drives the drill rod assembly to rise and fall along the axial direction.

8. A highway construction rock drilling sampling device as claimed in claim 7, characterized in that: The guide mechanism also includes a second connecting sleeve, a guiding member and an elastic member. The guiding member is slidably connected to the frame along the lifting direction of the drill rod assembly. Both ends of the guiding member are rotatably connected to the second connecting sleeve sleeved on the outside of the outer sleeve rod. The inner wall of the second connecting sleeve is provided with a third sliding tooth portion along the circumferential direction. The third sliding tooth portion cooperates with the first sliding tooth portion. The outer sleeve of the guide member is provided with an elastic member, and the bottom of the elastic member abuts against the lifting frame.

9. A highway construction rock drilling sampling device as claimed in claim 1, characterized in that: The frame includes a base, a frame body and a third driving mechanism. The base is provided with a channel that passes through from top to bottom for the drill rod assembly to pass through. The base is provided with a first threaded transmission part distributed along the circumferential direction. The frame body is provided with a second threaded transmission part distributed along the circumferential direction. The first threaded transmission part is threadedly matched with the second threaded transmission part. The third driving mechanism is connected to the frame body in a transmission manner to drive the frame body to rotate.

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