Power head convenient for taking and placing drill rod and rock soil sampling device

Abstract

The invention relates to a power head convenient for taking and placing a drill rod and a rock-soil sampling device, and belongs to the technical field of geological exploration. The rock-soil sampling device comprises a body, a lifting frame and a power head, wherein the power head comprises a power shaft and a taking and placing device; the taking and placing device comprises a floating sleeve, a clamping rod sleeve and a clamping assembly, the floating sleeve is arranged on the power shaft in a liftable and rotatable sleeving mode, the clamping rod sleeve is hinged to the bottom end of the floating sleeve so that the included angle between the clamping rod sleeve and the floating sleeve can be changed, and the clamping assembly is telescopically arranged on the clamping rod sleeve and used for clamping or loosening the drill rod head inserted into the clamping rod sleeve. According to the power head facilitating taking and placing of the drill rod and the rock soil sampling device, the floating sleeve can ascend and descend, so that the requirement for the movable interval of separation or installation of the power shaft and the drill rod is met, the top end of the drill rod can be inserted into the rod clamping sleeve and fixed by the clamping assembly, the weight of the drill rod is mainly borne by the power shaft, and time and labor are saved during installation.

Description

Technical Field

[0001] This invention belongs to the field of geological exploration technology, specifically relating to a power head and a soil and rock sampling device that facilitates the placement and removal of drill rods. Background Technology

[0002] Soil and rock sampling devices are key equipment in geotechnical engineering investigation. They are mainly used to obtain soil and rock samples from the surface or a certain depth underground, maintaining their original structure or disturbed state, so as to provide direct physical evidence for engineering geological evaluation, foundation design, geological hazard assessment, etc.

[0003] With the advancement of technology, more and more automated drilling equipment has emerged. Taking wireline coring drills as an example, please refer to the invention patent with patent number ZL2020111946900, which discloses a wireline coring screw drill for horizontal directional drilling engineering geological exploration. Wireline coring drills typically include drill rods, drill assembly, drill bits, etc., and the number of drill rods is multiple and can be disassembled. During the drilling and coring process, manual installation and removal of the drill rods are often involved.

[0004] During the installation of the drill rod, the top of the previous drill rod is locked by the pipe screwer. Then, the power head disengages from the top of the drill rod and rises. The worker aligns the bottom of the next drill rod with the bottom of the previous drill rod, and then straightens the drill rod so that its top is aligned with the power shaft of the power head. The power head then descends and tightens the drill rod with the previous drill rod and the power shaft with the drill rod. During the removal of the drill rod, the power head first raises all the drill rods to a certain height. The pipe screwer locks the second drill rod. The first and second drill rods are separated by the pipe screwer or manually. Then, the power shaft reverses and separates the first drill rod from the power shaft. After that, the worker holds the first drill rod, and then the power head rises, and the worker removes the first drill rod.

[0005] In some cases, the length of a single drill pipe can reach more than three meters. The installation and removal of the drill pipe are very laborious and usually require two people to complete. Furthermore, when inserting the bottom end of the drill pipe into the previous drill pipe, the worker needs to manually stand the drill pipe up, which is time-consuming and laborious. Summary of the Invention

[0006] Therefore, the purpose of this invention is to provide a power head and a soil and rock sampling device that facilitates the loading and unloading of drill rods, which can effectively improve the above-mentioned problems.

[0007] This invention provides a power head for easy loading and unloading of drill pipes, including a power shaft and a loading / unloading device; the loading / unloading device includes a floating sleeve, a clamping rod sleeve, and a clamping assembly. The floating sleeve is vertically and rotatably sleeved on the power shaft. The clamping rod sleeve is hinged to the bottom end of the floating sleeve so that the included angle between the two can be varied. The clamping assembly is telescopically disposed on the clamping rod sleeve and is used to clamp or release the drill pipe head inserted into the clamping rod sleeve.

[0008] The present invention also provides a soil and rock sampling device, including a main body, a lifting frame and the aforementioned power head, wherein the lifting frame is movably mounted on the main body and the power head is mounted on the lifting frame.

[0009] The beneficial effects of the present invention are as follows: The power head and soil sampling device for easy loading and unloading of drill rods provided by the present invention have a floating sleeve that can be raised and lowered to adapt to the range of motion requirements for the separation or installation of the power shaft and the drill rod. The top of the drill rod can be inserted into the clamping sleeve and fixed by the clamping component. The weight of the drill rod is mainly borne by the power shaft. The installation is time-saving and labor-saving. Furthermore, the separation between the two drill rods and between the drill rod and the power shaft is more thorough, and the operator's operation is less likely to damage the threads of the drill rod. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The above and other objects, features, and advantages of the present invention will become clearer through the accompanying drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not intentionally drawn to scale to actual dimensions; the focus is on illustrating the main points of the invention.

[0011] Figure 1 A schematic diagram of the structure of the soil and rock sampling device provided in the embodiment of the present invention. Figure 1 ; Figure 2 A schematic diagram of the structure of the soil and rock sampling device provided in the embodiment of the present invention. Figure 2 ; Figure 3 A schematic diagram of the power head of the soil and rock sampling device provided in the embodiment of the present invention. Figure 1 ; Figure 4 A schematic diagram of the power head of the soil and rock sampling device provided in the embodiment of the present invention. Figure 2 ; Figure 5 A schematic diagram of the power head of the soil and rock sampling device provided in the embodiment of the present invention. Figure 3 ; Figure 6 A schematic diagram of the sampling device of the soil and rock sampling apparatus provided in the embodiments of the present invention. Figure 1 ; Figure 7 A schematic diagram of the structure of the sampling device of the soil and rock sampling apparatus provided in the embodiments of the present invention. Figure 2 ; Figure 8A schematic diagram of the structure of the sampling device of the soil and rock sampling apparatus provided in the embodiments of the present invention. Figure 3 ; Figure 9 for Figure 8 CC section view; Figure 10 for Figure 6 A magnified view of part A; Figure 11 for Figure 7 A magnified view of part B; Figure 12 Schematic diagram of the rod-mounting steps of the soil and rock sampling device provided in the embodiments of the present invention. Figure 1 ; Figure 13 Schematic diagram of the rod-mounting steps of the soil and rock sampling device provided in the embodiments of the present invention. Figure 2 ; Figure 14 Schematic diagram of the rod-mounting steps of the soil and rock sampling device provided in the embodiments of the present invention. Figure 3 ; Figure 15 Schematic diagram of the rod-mounting steps of the soil and rock sampling device provided in the embodiments of the present invention. Figure 4 Icons: 10-Soil and rock sampling device; 20-Drill rod; 11-Body; 12-Lifting frame; 13-Power head; 110-Hose tightener; 130-Power shaft; 131-Power main body; 132-Floating shaft; 140-Pick-and-place device; 141-Floating sleeve; 142-Clamping rod sleeve; 143-Clamping assembly; 144-Linkage assembly; 145-Sliding sleeve; 150-Clamping component; 151-Clamping head; 152-Clamping spring; 160-Status component; 161-First trigger component; 162-Second trigger component; 163-Trigger ring; 164-Lifting ring; 165-Trigger block; 166-Lifting block. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0013] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0014] Please refer to Figure 1 , Figure 2 As shown, an embodiment of the present invention provides a soil and rock sampling device 10, which is mainly used in geotechnical engineering investigation. It can extract cylindrical soil and rock samples from the surface or a certain depth underground for staff to study, investigate, and assess the geological environment in a timely manner, providing support for subsequent engineering projects.

[0015] The soil and rock sampling device 10 is mainly used to sample several drill rods 20 (please refer to...). Figures 12-15 As shown, the drill rod 20 can be drilled to a certain depth underground and can be lifted and retrieved. The number of drill rods 20 used depends on the drilling depth and the length of each drill rod 20.

[0016] The drill rod 20 can be rod-shaped or tubular, and its structure can refer to the existing technology. The top and bottom ends of the drill rod 20 are respectively provided with threaded heads or threaded holes. That is, the top end of the drill rod 20 is provided with a threaded head and the bottom end is provided with a threaded hole, or the top end of the drill rod 20 is provided with a threaded hole and the bottom end is provided with a threaded head. The threaded head is provided with an internal thread and the threaded hole is provided with an external thread. The internal thread and the external thread match, that is, between two adjacent drill rods 20, the threaded head of one of them can be inserted into the threaded hole and the two threads are engaged.

[0017] First, it should be noted that the terms "upper" and "lower" mentioned in this embodiment refer to the directional terms used when the soil and rock sampling device 10 is working normally during drilling, and can be modified according to the actual situation.

[0018] The soil and rock sampling device 10 mainly consists of a body 11, a lifting frame 12, and a power head 13. The following is a detailed discussion of each component of the soil and rock sampling device 10.

[0019] The main body 11 primarily serves a supporting function. Its shape, structure, style, and size are not limited and can be flexibly selected according to actual needs. Furthermore, the main body 11 can adopt a non-self-propelled frame structure, a self-propelled structure, or be installed on self-propelled equipment such as tracked robots or tractors. The structure of the main body 11 is relatively conventional and is common knowledge in this field, so it will not be described in detail here.

[0020] The lifting frame 12 is mounted on the main body 11 in a height-adjustable manner. The lifting frame 12 can be raised and lowered vertically. Of course, the lifting frame 12 can also be tilted down or raised. The structure of the lifting frame 12 is not limited, such as plate structure, block structure, frame structure, etc.

[0021] The connection method between the lifting frame 12 and the main body 11 is not limited and can refer to the existing technology. For example, two vertical guide rods are provided on the main body 11 and two guide holes are provided on the lifting frame 12. The guide rods slide through the guide holes, so that the lifting frame 12 can move up and down along the guide rods.

[0022] The lifting method of the lifting frame 12 is not limited. For example, a ball screw mechanism is provided between the main body 11 and the lifting frame 12. The screw of the ball screw mechanism is driven to rotate by a motor or hydraulic system, and the screw drives the lifting frame 12 to move up and down.

[0023] The power head 13 is mounted on the lifting frame 12, which can drive the power head 13 to move up and down. It should be noted that the structure of the power head 13 does not depend on the lifting frame 12, the main body 11, etc., and the power head 13 can be independently produced, manufactured, sold, and used.

[0024] Please combine Figures 3-5 As shown, the power head 13 mainly consists of a power shaft 130 and a pick-and-place device 140. The pick-and-place device 140 is installed on the power shaft 130 to facilitate the picking and placing of the drill rod 20.

[0025] The structure of the power shaft 130 is not limited and can refer to existing technology. It can be either a fixed structure or a floating structure. That is, the power shaft 130 includes a power body 131 and a floating shaft 132. The floating shaft 132 and the power body 131 are connected by a spline, and the floating shaft 132 is vertically and flexibly mounted on the power body 131. The bottom end of the floating shaft 132 is provided with a threaded head. The threaded head of the floating shaft 132 matches the threaded hole of the drill rod 20, and the two can be threadedly engaged and locked. In some embodiments, the bottom end of the floating shaft 132 is a threaded hole, which can also match the threaded head of the drill rod 20.

[0026] The power unit 131 is equipped with a power source, which can be a motor or the like. The power source is connected to the floating shaft 132 for transmission, such as gear transmission or belt transmission.

[0027] Before the power shaft 130 is fixed to the top of the drill pipe 20, it needs to descend a certain distance until the bottom of the power shaft 130 is aligned with the top of the drill pipe 20. Then, the power shaft 130 rotates and the power head 13 descends, thereby tightening the power shaft 130 to the drill pipe 20. During this process, due to various factors such as the positional error, length error of the drill pipe 20, and the descent error of the power head 13, the descent distance of the power shaft 130 cannot be absolutely precise. The impact of the power shaft 130 can damage the threads of the drill pipe 20 and the power shaft 130. However, with the floating structure of this application, after the bottom of the floating shaft 132 contacts the drill pipe 20, even if the power body 131 continues to descend, it will not impact the threads of the drill pipe 20, effectively protecting the threads of the drill pipe 20 and the floating shaft 132. Furthermore, during the rotation of the power shaft 130, the power body 131 does not need to continue to descend; the floating shaft 132 can descend while rotating, making the operation simple, time-saving, and labor-saving.

[0028] Please combine Figures 6-11 As shown, the pick-and-place device 140 includes a floating sleeve 141, a clamping rod sleeve 142, a clamping assembly 143, and a linkage assembly 144.

[0029] The floating sleeve 141 is generally cylindrical in shape. The floating sleeve 141 is lifted and rotated on the power shaft 130. The floating sleeve 141 and the power shaft 130 are coaxially arranged. That is, when the power shaft 130 remains stationary, the floating sleeve 141 can rotate around its own center line or the center line of the power shaft 130. Furthermore, the floating sleeve 141 can rise or fall relative to the power shaft 130.

[0030] The size of the floating sleeve 141 is not limited and can be set as needed. Generally speaking, when the floating sleeve 141 reaches the bottom, its bottom end is lower than the bottom end of the power shaft 130 so that the power shaft 130 will not affect the movement of the clamping rod sleeve 142.

[0031] The connection method between the floating sleeve 141 and the drive shaft 130 is not limited, and can adopt, but is not limited to, the following schemes: The pick-and-place device 140 also includes a sliding sleeve 145, which is slidably sleeved on the drive shaft 130 and the two are connected by a spline. A pick-and-place bearing is provided between the floating sleeve 141 and the sliding sleeve 145. In other embodiments, the floating sleeve 141 can also be directly sleeved on the drive shaft 130. However, when the floating sleeve 141 rotates, there is a certain amount of friction between the two, which has a minor impact.

[0032] The clamping sleeve 142 is generally cylindrical in shape, and can be a cylinder, a square tube, etc. The size of the clamping sleeve 142 is greater than or equal to the diameter of the drill rod 20. Preferably, the size of the clamping sleeve 142 is slightly larger than the diameter of the drill rod 20 so that the drill rod 20 can be inserted into the clamping sleeve 142.

[0033] To facilitate the insertion of the drill rod 20 into the clamp sleeve 142, a flared opening can be provided at the bottom end of the clamp sleeve 142. The cross-section of the flared opening is circular, and the diameter of the flared opening gradually increases from top to bottom.

[0034] The clamping rod sleeve 142 is hinged to the bottom end of the floating sleeve 141. The hinge method between the two is not limited. For example, the bottom end of the floating sleeve 141 is provided with two connecting ears, which are arranged opposite to each other. The top end of the clamping rod sleeve 142 is located between the two connecting ears. A hinge shaft is provided between the clamping rod sleeve 142 and the connecting ears. The hinge shaft is fixedly connected to one of the clamping rod sleeve 142 and the connecting ears and rotates with the other.

[0035] The clamping sleeve 142 can rotate relative to the floating sleeve 141 around the hinge axis, thereby changing the included angle between the two. This means that when the operator tilts the drill rod 20, the clamping sleeve 142 can adjust the opening orientation in real time, thereby providing support for the top of the drill rod 20.

[0036] A clamping assembly 143 is disposed on a clamping rod sleeve 142. The clamping assembly 143 is telescopic, allowing a portion of the clamping assembly 143 to penetrate into the clamping rod sleeve 142 and fix the head of the drill rod 20 inserted into the clamping rod sleeve 142, and also to disengage from the clamping rod sleeve 142, allowing the drill rod 20 to disengage from the clamping rod sleeve 142. When the clamping assembly 143 clamps the head of the drill rod 20, the drill rod 20 cannot disengage from the clamping rod sleeve 142; when the clamping assembly 143 releases the head of the drill rod 20, the drill rod 20 can disengage from the clamping rod sleeve 142.

[0037] The structure of the clamping assembly 143 is not limited. For example, the clamping assembly 143 adopts a friction block, which is made of rubber or other materials. The clamping rod sleeve 142 is provided with a movable hole, and the friction block is telescopically disposed in the movable hole. When the friction block contacts the drill rod 20, the two are locked by friction. When the friction block is disengaged from the drill rod 20, the drill rod 20 can freely enter and exit the clamping rod sleeve 142.

[0038] In this embodiment, the structure of the clamping assembly 143 may also adopt, but is not limited to, the following scheme: the clamping assembly 143 includes a plurality of clamping members 150, which are distributed around the clamping rod sleeve 142.

[0039] The number of clamping members 150 is not limited, such as two, three, four, six, etc. In this embodiment, the number of clamping members 150 is four, and the four clamping members 150 are evenly distributed around the circumference of the clamping rod sleeve 142.

[0040] The clamping rod sleeve 142 is provided with a movable through hole, which extends radially along the clamping rod sleeve 142. The movable through hole can be various shapes such as round, square, or irregular. The clamping member 150 includes a clamping head 151 and a clamping spring 152, with the clamping head 151 slidably disposed within the movable through hole.

[0041] When the clamping head 151 slides along the center line of the movable through hole, it can approach or move away from the center line of the clamping rod sleeve 142, that is, approach or move away from the head of the drill rod 20 inside the clamping rod sleeve 142.

[0042] The clamping head 151 is wedge-shaped, that is, the bottom surface of the clamping head 151 is inclined and the top surface is flat. The flat surface is perpendicular to the center line of the clamping rod sleeve 142, and the inclined surface and the flat surface are set at an angle.

[0043] The clamping head 151 matches the locking area of ​​the drill pipe 20 head. The locking area is a recessed area with a flat top. When the drill pipe 20 is inserted into the clamping sleeve 142 from the bottom end, the head of the drill pipe 20 can contact the inclined surface and push the clamping head 151 outward until the locking area of ​​the drill pipe 20 is aligned with the clamping head 151. After the clamping head 151 is reset, the flat surface can fit against the top surface of the locking area, thereby preventing the drill bit from disengaging from the clamping sleeve 142.

[0044] The clamping spring 152 causes the wedge block to tend to move toward the inside of the clamping rod sleeve 142. That is, when the clamping head 151 is not affected by external force, the clamping spring 152 pushes the clamping head 151 back to its original position, at which time the wedge block penetrates into the inside of the clamping rod sleeve 142.

[0045] The style of the clamping spring 152 is not limited, and it can be a compression spring or a tension spring, etc. Preferably, the clamping spring 152 is a compression spring. The clamping spring 152 is located in the movable through hole, and the two ends of the clamping spring 152 abut against one end of the movable through hole and the clamping head 151, respectively. The clamping spring 152 is always in a compressed state and has a tendency to lengthen and unfold.

[0046] The control method of the clamping assembly 143 is not limited. For example, the clamping head 151 is inserted into the clamping rod sleeve 142 mainly by the clamping spring 152, and the clamping head 151 is disengaged from the clamping rod sleeve 142 mainly by manual control by the worker.

[0047] During rod insertion, when inserting the drill rod 20 into the clamping sleeve 142, the drill rod 20 can be inserted directly. The drill rod 20 can push the clamping head 151 open, and the operator does not need to manually pull the clamping head 151 open. After insertion, the clamping spring 152 can push the clamping head 151 to return to its original position. However, after the power head 13 connects to the drill rod 20 and drills the drill rod 20 to its lowest position, the operator must manually control the clamping head 151 to disengage from the drill rod 20, thereby disengaging the pick-and-place device 140 from the drill rod 20. The power shaft 130 can then raise the pick-and-place device 140 to prepare for the installation of the next drill rod 20.

[0048] During the drill rod removal operation, the drive shaft 130 drives the pick-and-place device 140 to descend. The pick-and-place device 140, relying on its own weight, locks into the head of the drill rod 20. At this time, the operator does not need to manually pull open the clamping head 151. After insertion, the clamping spring 152 can push the clamping head 151 to return to its original position. However, after the drill rod 20 is lifted and separated, the operator needs to manually control the clamping head 151 to disengage from the drill rod 20, thereby disengaging the pick-and-place device 140 from the drill rod 20, in preparation for disassembling the next drill rod 20.

[0049] However, the drill pipe 20 is usually quite long. Whether it is loading or unloading the pipe, one worker will be close to the end of the drill pipe 20 that is away from the pick-and-place device 140, making it difficult to operate. Another worker needs to do it manually. In addition, to ensure operational safety, the power shaft 130 usually needs to be stopped first during manual operation. This method is time-consuming and labor-intensive.

[0050] Therefore, in this embodiment, the control method of the clamping component 143 is improved, that is, the action of the clamping component 143 is controlled by the linkage component 144, thereby realizing the automatic control of the clamping component 143. Furthermore, the control method of the linkage component 144 is entirely realized by the mechanical structure itself, without the need for additional power, control programs, etc., saving time and effort.

[0051] Specifically, the linkage component 144 includes a status component 160, a first trigger component 161, and a second trigger component 162.

[0052] The state member 160 is annular, which can be a circular ring. The state member 160 is sleeved on the clamping rod sleeve 142, and the state member 160 can rotate around its own center line or the center line of the clamping rod sleeve 142.

[0053] As the state member 160 rotates, the clamping assembly 143 has an unlocked state and a locked state: when the clamping assembly 143 is in the unlocked state, the clamping head 151 can move freely, that is, the clamping head 151 can extend into the clamping sleeve and can also detach from the clamping sleeve; when the clamping assembly 143 is in the locked state, the clamping head 151 is always located outside the clamping sleeve, and even if the clamping head 151 can move within a certain area, it cannot extend into the clamping sleeve.

[0054] Each time the state member 160 rotates by a first preset angle, the clamping assembly 143 can switch between a locked state and an unlocked state.

[0055] The state element 160 controls the gripping head 151 to switch between the locked state and the unlocked state in any way, and may adopt, but is not limited to, the following technical solutions: the state element 160 includes a lifting ring 164, which is a ring structure and is arranged around the circumference of the state element 160.

[0056] The lifting ring 164 includes a number of lifting blocks 166 arranged in sequence, and the lifting blocks 166 include alternating slopes and arc surfaces.

[0057] A slope is defined as a surface whose distance from the centerline of the lifting ring 164 gradually decreases or increases along the circumference of the lifting ring 164. A slope can be a plane, an arc surface, at least two intersecting planes, or an irregular surface.

[0058] The arc surface can also be regarded as a cylindrical surface. The cross-section of the arc surface is circular, and the center of the arc surface is located on the center line of the lifting ring 164.

[0059] The distance between the farthest end of the slope and the center line of the lifting ring 164 can be equal to the diameter of the arc surface, while the distance between the nearest end of the slope and the center line of the lifting ring 164 is less than the diameter of the arc surface.

[0060] One end of the clamping member 150 is provided with a trigger part, which matches the actuating member; when the trigger part abuts against the slope, the clamping member 150 is in the unlocked state, and when the trigger part contacts the arc surface, the clamping member 150 is in the locked state.

[0061] A ring-shaped trigger ring 163 is provided on the circumferential surface of the state component 160. The trigger ring 163 is a ring structure and is arranged around the circumference of the state component 160. The trigger ring 163 and the lifting ring 164 are spaced apart.

[0062] The trigger ring 163 includes a plurality of spaced trigger blocks 165, each trigger block 165 being twice the size of the lifting block 166. The structure of the trigger blocks 165 is not limited; for example, its cross-section can be triangular or rectangular. One side of the trigger block 165 is an inclined plane, and the other side can also be an inclined plane or a vertical surface. The spacing between two adjacent trigger blocks 165 gradually decreases from top to bottom.

[0063] The first trigger 161 is disposed between the floating sleeve 141 and the clamping rod sleeve 142. When the clamping rod sleeve 142 rotates relative to the floating sleeve 141 beyond the second preset angle threshold, the floating sleeve 141 can push the first trigger 161 to move, so that the state member 160 rotates by the first preset angle.

[0064] The structure of the first trigger 161 is not limited, and the following schemes can be adopted, but are not limited to: The first trigger 161 includes a trigger slider, a trigger rod and a trigger spring. A vertical slide or slide rail is provided on the clamping sleeve 142. The trigger slider slides in cooperation with the slide or slide rail. The trigger rod extends vertically. The top end of the trigger rod is connected to the trigger slider. A wedge-shaped first trigger head is provided at the bottom end of the trigger rod. The first trigger head matches the trigger block 165. When the trigger rod moves downward, the first trigger head can be inserted between two adjacent trigger blocks 165 and squeeze one of the trigger blocks 165, thereby pushing the state member 160 to rotate.

[0065] The type of trigger spring is not limited; it can be a compression spring or a tension spring, etc., preferably a compression spring. The trigger spring is set in the slide or on the slide rail. The trigger spring causes the trigger slider and trigger rod to have an upward tendency, that is, without the action of external force, the trigger spring can cause the first trigger head to disengage from the trigger ring 163.

[0066] The control method for the trigger slider to slide downwards along the slide rail or slide path is not limited. For example, the trigger slider is adjacent to the connecting lug of the floating sleeve 141. When the clamping sleeve 142 and the floating sleeve 141 rotate relative to each other, the connecting lug can press the trigger slider downwards. In other embodiments, a connecting rod can also be provided between the trigger slider and the floating sleeve 141. The two ends of the connecting rod are respectively hinged to the trigger slider and the floating sleeve 141. For ease of description, the following definitions apply: the connecting rod has a first end and a second end. The first end of the connecting rod is hinged to the floating sleeve 141 and the second end is hinged to the trigger slider. The hinge axis of the clamping sleeve 142 and the floating sleeve 141 is the movable point. The first end, the second end, and the movable point form a triangle with one of the included angles adjustable. The area between the first end and the second end is the first side, the area between the first end and the movable point is the second side, and the area between the second end and the movable point is the third side. The length of the first side remains constant, the length of the second side also remains constant, the length of the third side can change, and the included angle between the second side and the third side can change.

[0067] In this embodiment, the "first preset angle" and "second preset angle" can be a specific angle value, such as 60°, 75°, 90°, etc., or an angle range, such as 60°-70°, 70°-90°, etc. The value of the first preset angle can be set by the operator according to the actual situation. For example, when unloading the drill rod, if it is desired to disengage the drill rod 20 from the clamp sleeve 142 as soon as possible, the length of the trigger rod can be extended, etc.

[0068] In some embodiments, the trigger lever can be configured as an adjustable telescopic lever, which allows staff to adjust it in real time according to on-site needs, making it convenient and labor-saving.

[0069] The second trigger 162 is disposed on the power shaft 130. When the pick-up and place device 140 rises above the preset height threshold relative to the power shaft 130, the second trigger 162 can push the status device 160 to rotate by a first preset angle.

[0070] The style of the second trigger 162 is not limited. For example, the second trigger 162 is a rod-shaped structure with a second trigger head at its bottom end. The second trigger head matches the trigger block 165. When the second trigger 162 moves downward, that is, when the pick-and-place device 140 rises relative to the power shaft 130, the second trigger head can be inserted between two adjacent trigger blocks 165 and squeeze one of the trigger blocks 165, thereby pushing the status member 160 to rotate.

[0071] In the absence of external interference, the state member 160 needs to remain stationary, so that the state of the clamping assembly 143 remains unchanged. Only when the state member 160 is triggered by the first trigger member 161 or the second trigger member 162 can it rotate and change the state of the clamping assembly 143. The way the state member 160 maintains its state is not limited. For example, the friction between the state member 160 and the clamping rod sleeve 142 can be increased, and a rubber ring can be set between them. Only when the external force exceeds a preset threshold can the state member 160 rotate. Of course, the following scheme can also be adopted: the linkage assembly 144 also includes a locking member, which includes a locking ball and a locking spring. The circumferential surface of the clamping rod sleeve 142 is provided with a wavy surface. The state member 160 is provided with a locking hole. The locking ball is disposed in the locking hole and abuts against the wavy surface. The locking spring presses the locking ball against the wavy surface.

[0072] In some embodiments, the pick-and-place device 140 may also include a release spring. The type of release spring is not limited; it can be a compression spring or a tension spring, preferably a tension spring. The two ends of the tension spring are detachably connected to the floating sleeve 141 and the clamping sleeve 142, respectively. The tension spring causes the clamping sleeve 142 to have a tendency to rotate relative to the floating sleeve 141. That is, when the drill rod 20 is not inserted into the clamping sleeve 142, the tension spring causes the clamping sleeve 142 to rotate relative to the floating sleeve 141 and remain at an angle, so that the operator can insert the drill rod 20 into the clamping sleeve 142 without manually rotating it. After the drill rod 20 is inserted, as the drive shaft 130 lifts the drill rod 20, the weight of the drill rod 20 causes the clamping sleeve 142 to return to a vertical position, and the bottom end of the drill rod 20 matches the head of the drill rod 20 below it. Of course, in other embodiments, the pick-and-place device 140 may not include the release spring.

[0073] The method of using the soil and rock sampling device 10 provided in this embodiment is divided into raising the rod and lowering the rod. The soil and rock sampling device 10 can be switched between these two requirements by manually rotating the status ring to change the clamping component 143, which was originally in the locked state, to the unlocked state, or to change the clamping component 143, which was originally in the unlocked state, to the locked state.

[0074] Before describing the rod mounting and unmounting steps, for ease of description, we will take two drill rods 20 as an example, which are defined as the first rod and the second rod, respectively.

[0075] The steps for going up the swing are as follows: Part of the first rod has already extended into the ground. The upper end of the first rod is clamped and fixed by the pipe wrench 110. The structure of the pipe wrench 110 can refer to the existing technology, and will not be described in detail here. The lifting platform drives the power head 13 to rise to a certain height, and the power shaft 130 and the pick-and-place device 140 disengage from the first rod respectively; The unloading spring causes the clamping sleeve 142 to rotate relative to the floating sleeve 141 to a second preset angle; Please combine Figure 12 As shown, the operator inserts the head of the second rod into the clamping sleeve 142. Since the clamping assembly 143 is in the unlocked state at this time, the second rod can push the clamping head 151 outward until the second rod is inserted into the whole position. The clamping head 151 is reset under the action of the clamping spring 152 and clamps and fixes the second rod. Since the floating sleeve 141 can both rise and fall relative to the power shaft 130 and rotate relative to the power shaft 130, the operator can insert the drill rod 20 into the clamping sleeve 142 from any direction. Please combine Figure 13As shown, the lifting seat drives the power head 13 to rise. The staff holds the tail of the second rod, and the second rod gradually stands up until it is completely vertical. The weight of the second rod can overcome the action of the unloading spring, so that the clamping sleeve 142 is vertical and coaxial with the floating sleeve 141. The lifting seat drives the power head 13 to descend to a certain height, and the tail of the second rod is aligned with the head of the first rod; Please combine Figure 14 As shown, the power shaft 130 operates, causing the second rod to tighten with the first rod and the power shaft 130 to tighten with the second rod; During the tightening process between the power shaft 130 and the second rod, the height of the second rod and the clamping sleeve 142 remains unchanged. The power shaft 130 descends, that is, the clamping sleeve 142 rises relative to the power shaft 130. The second trigger 162 moves downward, and the second trigger head at the bottom of the second trigger 162 is inserted between two adjacent trigger blocks 165. The second trigger head abuts against the inclined surface of one of the trigger blocks 165, thereby pushing the status ring to rotate by a first preset angle. The clamping assembly 143 changes from the unlocked state to the locked state. The power shaft 130 rotates and the lifting seat descends to perform drilling operations on the soil and rock. Please combine Figure 15 As shown, the lifting seat drives the power head 13 to rise and detach from the head of the second rod, in preparation for the installation of the next drill rod 20.

[0076] The steps for removing the rod are as follows: Part of the first pole is below ground level, and the second pole is completely buried underground; Before using the soil and rock sampling device 10 to unload the rod, first adjust the state of the pick-and-place device 140. If the pick-and-place device 140 was previously used to unload the rod, no adjustment is needed. If the pick-and-place device 140 was previously used to load the rod, manually rotate the state member 160 to rotate the state member 160 to the first preset angle. Also, the rod unloading spring needs to be removed. At this time, the clamping assembly 143 is in the locked state. The lifting seat drives the power head 13 to descend. Under its own gravity, the clamping sleeve 142 and the floating sleeve 141 are coaxial. The clamping sleeve 142 first fits into the head of the first rod. The lifting seat continues to drive the power head 13 to descend and the power shaft 130 to rotate, so that the power shaft 130 is fixed to the head of the first rod. At this time, the bottom end of the clamping sleeve 142 will be blocked by the pipe screwdriver 110 or the bottom plate of the body 11 or the ground. The clamping sleeve 142 and the floating sleeve 141 cannot continue to descend. Therefore, the power shaft 130 descends relative to the clamping sleeve 142, the clamping sleeve 142 rises relative to the power shaft 130, the second trigger 162 descends, and the second trigger head at the bottom of the second trigger 162 is inserted between two adjacent trigger blocks 165. The second trigger head abuts against the inclined surface of one of the trigger blocks 165, thereby pushing the status ring to rotate at the first preset angle. The clamping assembly 143 changes from the locked state to the unlocked state, and the clamping assembly 143 clamps the head of the first rod. The lifting platform drives the power head 13 to rise, and the first and second rods are lifted upwards as a whole until they reach the designated height. The upper end of the second rod is fixed using the pipe screwdriver 110. The first rod is first separated from the second rod by the pipe screwdriver 110, and then the power shaft 130 is separated from the first rod. During this process, the clamping assembly 143 always clamps the head of the first rod. The lifting platform continues to drive the power head 13 to rise, lifting the first pole. The staff holds the tail of the first pole and guides it to the appropriate position. As the tilt angle of the first rod changes, the connecting lug of the floating sleeve 141 presses against the trigger slider, the trigger spring is compressed, and the trigger rod gradually extends between the two adjacent trigger blocks 165. When the clamping sleeve 142 rotates more than the second preset angle relative to the floating sleeve 141, the status ring rotates the first preset angle, thereby changing the clamping assembly 143 from the unlocked state to the locked state, the clamping head 151 disengages from the head of the first rod, and the operator can pull the head of the first rod out of the clamping sleeve 142. The clamping sleeve 142 resets under its own weight, and the clamping sleeve 142 is coaxial with the floating sleeve 141, in preparation for disassembling the second rod.

[0077] The above steps can be added, removed, modified, or their order adjusted as needed.

[0078] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power head for easy loading and unloading of drill pipes, characterized in that, It includes a power shaft and a pick-and-place device; the pick-and-place device includes a floating sleeve, a clamping rod sleeve and a clamping assembly. The floating sleeve is vertically and rotatably sleeved on the power shaft. The clamping rod sleeve is hinged to the bottom end of the floating sleeve so that the included angle between the two can be changed. The clamping assembly is telescopically disposed on the clamping rod sleeve and is used to clamp or release the drill rod head inserted into the clamping rod sleeve.

2. The power head according to claim 1, characterized in that, The clamping assembly includes a plurality of clamping members distributed around the clamping rod sleeve. Each clamping member includes a clamping head and a clamping spring. The clamping head is radially retractable along the clamping rod sleeve and one end can extend into or detach from the clamping rod sleeve. The clamping head is wedge-shaped and configured to match the locking area of ​​the drill bit head. The clamping spring causes the wedge-shaped block to tend to move toward the interior of the clamping rod sleeve.

3. The power head according to claim 2, characterized in that, The pick-and-place device also includes a linkage component, which includes a status component, a first trigger component, and a second trigger component. The state member is rotatably sleeved on the clamping rod sleeve. Each time the state member rotates by a first preset angle, the clamping assembly can switch between a locked state and an unlocked state. The first trigger is disposed between the floating sleeve and the clamping rod sleeve. When the clamping rod sleeve rotates relative to the floating sleeve beyond a second preset angle threshold, the floating sleeve can push the first trigger to move, so that the status member rotates by a first preset angle. The second trigger is disposed on the power shaft. When the pick-and-place device rises above a preset height threshold relative to the power shaft, the second trigger can push the status member to rotate by a first preset angle.

4. The power head according to claim 3, characterized in that, The status component has an annular trigger ring and a lifting ring on its circumferential surface. The trigger ring includes a number of trigger blocks arranged at intervals, and the lifting ring includes a number of lifting blocks arranged sequentially. The number of trigger blocks is twice the number of lifting blocks. The first trigger is slidably disposed on the clamping rod sleeve, and when the clamping rod sleeve rotates relative to the floating sleeve, it can push the first trigger to move downward, so that the first trigger can abut against the trigger block and push the status member to rotate a first preset angle; when the pick-and-place device rises relative to the power shaft, the second trigger can abut against the trigger block and push the status member to rotate a second preset angle. The lifting block includes alternating slopes and arc surfaces. One end of the clamping member is provided with a trigger part, which matches the actuating member. When the trigger part abuts against the slope, the clamping member is in an unlocked state. When the trigger part contacts the arc surface, the clamping member is in a locked state.

5. The power head according to claim 1, characterized in that, The linkage component also includes a locking element, which includes a locking ball and a locking spring. The circumferential surface of the clamping rod sleeve is provided with a wavy surface. The state member is provided with a locking hole. The locking ball is disposed in the locking hole and abuts against the wavy surface. The locking spring presses the locking ball against the wavy surface.

6. The power head according to claim 1, characterized in that, The pick-and-place device also includes a sliding sleeve, which is slidably mounted on the power shaft and the two are connected by a spline. A pick-and-place bearing is provided between the floating sleeve and the sliding sleeve.

7. The power head according to claim 1, characterized in that, The bottom end of the clamping rod sleeve is provided with a flared opening.

8. The power head according to claim 1, characterized in that, The pick-and-place device also includes a release spring, the two ends of which are detachably connected to the floating sleeve and the clamping sleeve, respectively, and cause the clamping sleeve to have a tendency to rotate relative to the floating sleeve.

9. The power head according to claim 1, characterized in that, The power shaft includes a power body and a floating shaft. The floating shaft and the power body are splined together, and the floating shaft is mounted on the power body in a height-adjustable manner. The bottom end of the floating shaft is provided with a threaded head that matches the drill pipe.

10. A soil and rock sampling device, characterized in that, It includes a body, a lifting frame, and a power head as described in any one of claims 1-9, wherein the lifting frame is movably mounted on the body, and the power head is mounted on the lifting frame.

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