Electric rotary combined type soil sampler

Abstract

The utility model provides an electric rotary combined type soil sampler. The electric rotary combined type soil sampler comprises a handheld electric drill, an adapter substitute, an upper end cover plug, a plurality of pipe joints and a drill bit, an adapter is mounted at the top end of the upper end cover plug, and the handheld electric drill drives the upper end cover plug to rotate through the adapter; the top of the first pipe section in the multiple pipe sections is connected with the upper end cover plug through a thread structure, and the bottom of the tail pipe section in the multiple pipe sections is connected with the drill bit through a thread structure. At least one of the multiple pipe joints is connected through an inserting structure and a lateral puller bolt; the inserting structure comprises an inserting head arranged at the end of one pipe section and an inserting opening formed in the matched end of the adjacent pipe section, an annular groove is formed in the periphery of the inserting head, a screw opening corresponding to the annular groove is formed in the side portion of the inserting opening, and a lateral puller bolt is in threaded fit with the screw opening and is clamped into the annular groove in a jacking mode, so that the two adjacent pipe sections can rotate in the circumferential direction after being connected. The structure of the soil sampler is suitable for electric transformation, and the threaded connection position is not prone to being locked.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil sampler technical field, specifically, relate to a kind of electric rotary combined soil sampler. BACKGROUND

[0002] Soil investigation and collection are the most basic work for environment exploration, monitoring and other professionals, and shallow soil sampler is an important tool for soil collection, and is also the core tool for outdoor teaching and sampling.

[0003] In the teaching process, the soil taken mainly is shallow soil, and due to the need for soil comparison, the soil investigation and collection required by ordinary colleges and universities teaching exist single-point small amount, but need multi-point collection to enrich the comparison demand of later experiment, so it is necessary to collect soil at multiple locations, and the whole collection process is relatively cumbersome.

[0004] And the traditional soil sampler is mostly manual soil sampler, and in the process of a large number of sampling, there are problems such as laborious operation and time-consuming, so the teaching and research personnel continue to electrically transform it.

[0005] On the basis of this demand, the traditional soil sampler is mostly integral soil sampler, which is long and inconvenient to carry, and is relatively cumbersome for teaching work, and at present, a soil sampler combined by thread connection of multiple pipe sections has been developed, but the thread connection is only suitable for manual soil sampling, and when electrically driven, the motor torque is large, and the thread connection is easily tightened, and it is not easy to loosen when disassembled.

[0006] For example, the utility model patent with patent application number 202222242795.X and the name of soil sampler is assembled by thread connection, and when electrically driven, the thread connection is easily locked and not easy to loosen, which affects use.

[0007] In order to solve the above problems, people have been seeking an ideal technical solution. UTILITY MODEL CONTENTS

[0008] The utility model aims at the deficiencies of prior art, and provides an electric rotary combined soil sampler suitable for electric transformation and not easy to lock between multiple pipe sections.

[0009] In order to achieve the above purpose, the utility model adopts the technical scheme of an electric rotary combined soil sampler, which comprises a handheld electric drill, a conversion joint, an upper end cover plug, multiple pipe sections and a drill bit.

[0010] The top end of the upper end cover plug is provided with the conversion joint, and the handheld electric drill drives the upper end cover plug to rotate through the conversion joint.

[0011] The top of the first pipe section of the multi-section pipe section is connected with the upper end cap plug through a threaded structure, and the bottom of the last pipe section of the multi-section pipe section is connected with the drill bit through a threaded structure.

[0012] At least one of the multi-section pipe sections is connected through an anti-lock structure.

[0013] The anti-lock structure comprises a plug-in structure and a side pressing bolt connection.

[0014] The plug-in structure comprises a plug provided at the end of a pipe section and a socket provided at the mating end of an adjacent pipe section, the plug is provided with an annular groove around the plug, and the socket is provided with at least one pair of screw holes corresponding to the annular groove, the side pressing bolt is threadedly connected with the screw hole and tightly clamped into the annular groove, so that the two adjacent pipe sections are locked in the axial direction and can rotate in the circumferential direction after being connected.

[0015] As described above, the multi-section pipe sections are connected through the plug-in structure.

[0016] As described above, the other connection positions between the multi-section pipe sections which are not connected through the plug-in structure are connected through a threaded connection.

[0017] As described above, the three-legged support comprises a steel sleeve and three legs provided around the steel sleeve, and a corresponding clamping hole is provided on the last pipe section or the second last pipe section of the multi-section pipe section.

[0018] As described above, the pressing bolt comprises a threaded stud and a nut, the threaded stud is threadedly connected with the screw hole, and the nut is threadedly connected with the threaded stud.

[0019] As described above, the anti-lock structure comprises a threaded section and a self-locking washer provided at the connection end of the adjacent two pipe sections, and a locking double-nut assembly for cooperating with the self-locking washer, the locking double-nut assembly comprises an outer screw nut, an upper screw nut and a lower screw nut, the inner part of the outer screw nut is provided with a thread, the outer side of the upper screw nut is provided with an outer thread for cooperating with the outer screw nut, the inner side of the upper screw nut is provided with an inner thread for cooperating with the threaded section of the connection end of the pipe section, the top end of the upper screw nut is provided with a tooth for cooperating with the self-locking washer, the outer side of the lower screw nut is provided with an outer thread for cooperating with the outer screw nut, the inner side of the lower screw nut is provided with an inner thread for cooperating with the threaded section of the connection end of the pipe section, and the bottom end of the lower screw nut is provided with a tooth for cooperating with the self-locking washer, the upper screw nut and the lower screw nut are driven to move in opposite or same directions by rotating the outer screw nut.

[0020] As described above, the upper end cap plug and the conversion joint are fixedly connected through a bolt.

[0021] As described above, the top end of the conversion joint is provided with an inner hole for cooperating with a handheld electric drill.

[0022] As described above, the hand-held electric drill is a battery-powered electric drill or an electric drill connected to a power supply.

[0023] As described above, the motor of the hand-held electric drill has a power of at least 2800W.

[0024] As described above, the number of screw holes at the socket is two, three or four, and the screw holes are equiangularly distributed.

[0025] The utility model discloses relative prior art has substantial feature and progress, specifically speaking, the utility model has the following advantages:

[0026] Because adopt hand-held electric drill to provide rotary power, the torque of electric drill is big, is not easy to control, and the thread at pipe joint is contrary to the rotation direction of electric drill, and the force of electric drill is easy to make the locking degree of the thread between pipe joints deepen, and it is not easy to grasp like manual mode. In order to overcome the problem, at least one plug-in structure and the connection mode of side clamping bolt cooperation are arranged at the connection between pipe joints, since the clamping bolt can lock in the axial direction after being clamped into the annular groove, and in the circumferential direction, it depends on the pre-tightening friction force of the clamping bolt, when the force applied by the electric drill exceeds the friction force range, the plug-in structure here will rotate under the electric drive to unload the rotary power from the electric drill, thereby avoiding the accumulation of these forces in the threaded connection area, and further ensuring that the whole soil sampler can be easily disassembled after use.

[0027] Or the connection mode mainly using the anti-loosening bidirectional nut assembly, since the anti-loosening structure mainly uses the engagement tooth as the main stress position, the stress of the threaded segment is relatively weakened, avoiding the accumulation of force in the threaded connection area, also playing the same role as above.

[0028] Since the hand-held motor is driven, the sampling time is saved, the sampling efficiency is improved, and the difficulty of transformation is relatively low, which is very suitable for shallow field soil investigation and collection. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the structure schematic view of the electric rotary combined soil sampler in the embodiment 1 of the utility model.

[0030] Figure 2 It is the structure schematic view of the upper end cap plug and the conversion joint in the embodiment 1 of the utility model.

[0031] Figure 3 It is the structure schematic view of the first section pipe joint in the embodiment 1 of the utility model.

[0032] Figure 4 It is the structure schematic view of the tail section pipe joint in the embodiment 1 of the utility model.

[0033] Figure 5Is the structure diagram of the intermediate section pipe joint in the embodiment 1 of the utility model.

[0034] Figure 6 Is the detail view of the plug-in structure in the embodiment 1 of the utility model.

[0035] Figure 7 Is the structure diagram of the through bar in the embodiment 1 of the utility model.

[0036] Figure 8 Is the schematic diagram of the pipe joint connecting end in the embodiment 2 of the utility model.

[0037] Figure 9 Is the explosion diagram of the pipe joint connecting end connecting place in the embodiment 2 of the utility model.

[0038] Figure 10 Is the structure diagram of the anti-loose bidirectional nut assembly in the embodiment 2 of the utility model.

[0039] In the drawing: 1. Handheld electric drill;2. Conversion joint;3. Upper end cap plug;4. Multi-section pipe joint;5. Drill bit;6. Tripod;7. Through bar;11. Plug;12. Socket;13. Annular groove;14. Screw port;15. Side top bolt;41. First section pipe joint;42. Tail section pipe joint;43. Plug-in structure;61. Steel sleeve;62. Leg;

[0040] 21. Threaded section;22. Self-locking washer;23. Outer screw nut;24. Upper screw nut;25. Lower screw nut. DETAILED DESCRIPTION

[0041] The technical scheme of the utility model will be described in further detail by specific embodiments.

[0042] Embodiment 1

[0043] As Figures 1-7 Indicated, an electric rotary combined soil sampler includes a handheld electric drill 1, a conversion joint 2, an upper end cap plug 3, a multi-section pipe joint 4 and a drill bit 5.

[0044] The top end of the upper end cap plug 3 is installed with the conversion joint 2, and the bottom end of the conversion joint 2 is fixed between the upper end cap plug 3 through bolt connection, and the top end of the conversion joint 2 is provided with an inner square hole or an inner hexagonal hole matched with the handheld electric drill, and the handheld electric drill is an electric drill with a battery or an electric drill connected with a city power supply.

[0045] The handheld electric drill 1 drives the upper end cap plug 3 to rotate through the conversion joint 2, and at the same time provides a downward pressure to the whole soil sampler.

[0046] The top of the first pipe section 41 in the multi-section pipe section 4 is connected with the upper end cap plug 3 through a threaded structure, and the bottom of the last pipe section 42 in the multi-section pipe section 4 is connected with the drill bit 5 through a threaded structure, and the two connections are still connected in a threaded connection mode, on the one hand, the threaded connection mode is relatively easy to operate and process, on the other hand, the two structures are frequently replaced in the soil sampler, and most of the drill bits 5 and the upper end cap plugs 3 on the market still adopt a threaded mode, so that the threaded mode can reduce market procurement pressure, reduce cost pressure, improve the adaptability and the modified performance of the utility model.

[0047] At least one of the multi-section pipe sections 4 is connected through a plug-in structure 43 and a side pressing bolt 15 to form an anti-lock structure.

[0048] In the embodiment, the multi-section pipe sections are connected through the plug-in structures.

[0049] In other embodiments, one of the multi-section pipe sections is connected through a plug-in structure and a side pressing bolt, and the other positions are connected through threaded connections, in principle, only one plug-in structure can meet the requirements, but in practice, due to assembly accuracy, force angle, soil resistance and other external forces, only one plug-in structure may not be sufficient, so all plug-in structures are used in the embodiment.

[0050] The plug-in structure includes a plug 11 arranged at the end of a pipe section and a socket 12 arranged at the matching end of an adjacent pipe section, an annular groove 13 is arranged around the plug 11, and at least one pair of screw holes 14 corresponding to the annular grooves is arranged on the side of the socket 12, in the embodiment, the number of screw holes at the socket is two, three or four, and the screw holes are distributed at equal angles, the side pressing bolt 15 is screwed into the screw hole 14 and tightly clamped into the annular groove 13, so that two adjacent pipe sections are locked in the axial direction and can rotate in the circumferential direction after being connected.

[0051] Specifically, the pressing bolt includes a threaded stud and a nut, the threaded stud is screwed into the screw hole, and the nut is screwed into the threaded stud.

[0052] The basic principle of the plug-in structure is:

[0053] Since the top end is driven by a handheld electric drill, the motor specification is at least 2800W, and the handheld electric drill only has gear and switch control mode, and when the threaded connection structure is too tight, it is not easy to loosen, and the threaded connection structure is easily damaged after a long time.

[0054] Adding an extra function to dynamically adjust the output power based on the force is not economical for the soil sampler, so the only way to address the above problem is through structural optimization.

[0055] This utility model adds a plug-in structure to the pipe section support. After the side tightening bolt 15 is inserted into the annular groove 13, the pipe section can be fully locked in the axial direction to prevent it from loosening. In the circumferential direction, it mainly relies on the friction between the end of the side tightening bolt 15 and the bottom of the annular groove 13 to ensure that it does not rotate.

[0056] During installation, the preload of the side tightening bolt 15 can be controlled within a certain range and should not be too tight. When the motor drives the rotation, the soil sampler is forced to stop due to the resistance from the soil. When the pipe section of the soil sampler is overloaded, the overload force exceeds the friction between the side tightening bolt 15 and the annular groove 13 at the plug-in structure, causing the pipe section to rotate around the plug-in structure to unload the overload force. This prevents the threads at other locations from being subjected to excessive rotational force, which would result in excessive thread preload and make disassembly difficult.

[0057] Since the soil sampler is driven by an electric drill, the balance control of the soil sampler requires the aid of an additional structure. Therefore, in the preferred embodiment, a tripod 6 is also included. The tripod 6 includes a steel sleeve 61 and three legs 62 arranged around the steel sleeve. The tail section or the second tail section of the multi-section pipe is provided with a bayonet corresponding to the steel sleeve.

[0058] When in use, it is also equipped with a pusher bar 7, which is used to remove the collected soil from the tube section.

[0059] Example 2

[0060] like Figures 8-10 As shown, in this embodiment, the anti-locking structure includes a threaded section 21 and a self-locking washer 22 disposed at the connection end of two adjacent pipe sections, as well as an anti-loosening bidirectional nut assembly for cooperating with the self-locking washer.

[0061] Among them, the threaded section 21 is an external thread, and the self-locking washer 22 has a structure with anti-loosening teeth on one end face and a flat end face on the other end for abutting against the step at the tail end of the threaded section 21.

[0062] The anti-loosening bidirectional nut assembly comprises an outer screw nut 23, an upper screw nut 24 and a lower screw nut 25, the inner part of the outer screw nut 23 is provided with a thread, the outer side of the upper screw nut 24 is provided with an outer thread matched with the outer screw nut 23, the inner side is provided with an inner thread matched with the thread segment 21 of the pipe joint connecting end, the top end is provided with a tooth matched with the self-locking washer 22, the outer side of the lower screw nut 25 is provided with an outer thread matched with the outer screw nut 23, the inner side is provided with an inner thread matched with the thread segment of the pipe joint connecting end, the bottom end is provided with a tooth matched with the self-locking washer 22, the upper screw nut 24 and the lower screw nut 25 are driven to move in opposite directions or the same direction by rotating the outer screw nut 23.

[0063] In the installation, the adjacent two pipe joints are connected together through the anti-loosening bidirectional nut assembly, first, the anti-loosening bidirectional nut assembly is kept in the contracted state, about 40mm high, after the thread segments of the pipe joints are pre-connected in place, the outer screw nut 23 is screwed to drive the upper screw nut 24 and the lower screw nut 25 to rotate upward and downward respectively until the anti-loosening teeth on the self-locking washers 22 on both ends are engaged together, the height after being fully unscrewed is 45mm, thus the locking is completed.

[0064] Due to the existence of the anti-loosening bidirectional nut assembly, especially the existence of the engaging tooth structure, the force borne by the thread segment of the pipe joint is relatively reduced, the problem of being too tight and difficult to open caused by over-tightening is avoided.

[0065] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed for protection.

Claims

1. An electrically driven rotary combined soil sampler, characterized in that: Includes handheld electric drills, adapters, top end caps, multi-section pipe sections, and drill bits; The adapter is installed at the top of the upper end cap plug, and the handheld electric drill drives the upper end cap plug to rotate through the adapter. The top of the first section of the multi-section pipe is connected to the upper end cap plug via a threaded structure, and the bottom of the last section of the multi-section pipe is connected to the drill bit via a threaded structure. At least one of the multi-section pipes is connected by an anti-locking structure.

2. The electrically driven rotary combined soil sampler according to claim 1, characterized in that: The anti-locking structure includes a plug-in structure and a side-tightening bolt connection; The plug-in structure includes a plug at one end of a pipe section and a socket at the mating end of an adjacent pipe section. The plug has an annular groove around its periphery, and the socket has at least one pair of threaded holes corresponding to the annular groove on its side. The side tightening bolt engages with the threaded hole and is tightened into the annular groove, so that the two adjacent pipe sections are locked in the axial direction and can rotate in the circumferential direction after connection.

3. The electrically driven rotary combined soil sampler according to claim 2, characterized in that: All the multiple pipe sections are connected by the plug-in structure; other connection positions between the multiple pipe sections that are not connected by the plug-in structure are threaded connections.

4. The electrically driven rotary combined soil sampler according to claim 2, characterized in that: The tightening bolt includes a stud and a nut, wherein the stud is threadedly connected to the threaded opening, and the nut is threadedly connected to the stud.

5. The electrically driven rotary combined soil sampler according to claim 1, characterized in that: The anti-locking structure includes a threaded section and a self-locking washer located at the connection end of two adjacent pipe sections, and an anti-loosening bidirectional nut assembly for cooperating with the self-locking washer. The anti-loosening bidirectional nut assembly includes an external screw nut, an upper screw nut, and a lower screw nut. The external screw nut has internal threads. The upper screw nut has an external thread on its outer side that mates with the external screw nut, an internal thread on its inner side that mates with the threaded section at the connection end of the pipe section, and a tooth at its top that mates with the self-locking washer. The lower screw nut has an external thread on its outer side that mates with the external screw nut, an internal thread on its inner side that mates with the threaded section at the connection end of the pipe section, and a tooth at its bottom that mates with the self-locking washer. Rotating the external screw nut drives the upper screw nut and the lower screw nut to move in opposite directions or towards each other.

6. The electrically driven rotary combined soil sampler according to claim 1, 2, 3, 4, or 5, characterized in that: It also includes a tripod, which includes a steel sleeve and three legs arranged around the steel sleeve. The tail section or the second tail section of the multi-section pipe is provided with a bayonet corresponding to the steel sleeve.

7. The electrically driven rotary combined soil sampler according to claim 4, characterized in that: The upper end cap plug is fixed to the adapter by bolts; the top of the adapter is provided with an inner square hole for use with a handheld electric drill.

8. The electrically driven rotary combined soil sampler according to claim 1, characterized in that: The handheld electric drill is either a drill with a battery or a drill connected to mains power.

9. The electrically driven rotary combined soil sampler according to claim 1, characterized in that: The motor of the handheld electric drill is at least 2800W.

10. The electrically driven rotary combined soil sampler according to claim 2, characterized in that: The number of screw holes at the socket is two, three, or four, and the screw holes are distributed at equal angles.

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