A multi-area sampling device for petroleum geology

Abstract

This invention relates to the field of soil sampling, specifically to a multi-region sampling device for petroleum geology, comprising a first circular plate and a second circular plate; multiple sets of drilling sampling mechanisms are uniformly arranged at the lower end of the second circular plate, capable of simultaneously drilling holes in the soil and collecting soil samples, each set of drilling sampling mechanisms being vertically arranged; multiple first circular rods are rotatably arranged on the second circular plate for driving the multiple sets of drilling sampling mechanisms to rotate respectively; a vertical drive mechanism is arranged between the first and second circular plates for driving the second circular plate and the multiple first circular rods to rise and fall synchronously; a rotation drive mechanism is arranged on the first circular plate for driving the multiple first circular rods to rotate synchronously; by setting multiple sets of drilling sampling mechanisms, the sampling device can simultaneously sample soil from multiple regions within a first range, effectively improving the sampling efficiency of the sampling device.

Description

Technical Field

[0001] This invention relates to the field of soil sampling, specifically to a multi-regional sampling device for petroleum geology. Background Technology

[0002] Petroleum is a mixture of gaseous, liquid, and solid hydrocarbons that occurs naturally. It is a viscous, dark brown liquid, often referred to as the lifeblood of industry. Its main components are a mixture of various alkanes, cycloalkanes, and aromatic hydrocarbons. Before an oil field is developed, the surrounding geological conditions need to be analyzed. This is done by drilling down to collect soil samples for analysis, thereby understanding the local geological conditions.

[0003] In existing technologies, when sampling soil in petroleum geology, a single drill bit is often used to sample the soil. This results in poor accuracy of a single sampling and may cause detection errors. Therefore, it is necessary for staff to repeatedly sample the soil at different locations within a certain range to effectively reduce detection errors. However, repeatedly sampling the soil makes the sampling process too cumbersome. Summary of the Invention

[0004] To address the problems existing in the current technology, a multi-area sampling device for petroleum geology is provided. By setting up multiple sets of borehole sampling mechanisms, the sampling device can simultaneously sample soil geology in multiple areas within a first range, effectively improving the sampling efficiency of the sampling device.

[0005] To solve the problems of the prior art, the technical solution adopted by the present invention is as follows:

[0006] A multi-area sampling device for petroleum geology includes a first circular plate and a second circular plate, which are coaxially arranged with the first circular plate located above the second circular plate.

[0007] The lower end of the second circular plate is evenly provided with multiple sets of drilling and sampling mechanisms that can collect soil samples while drilling holes in the soil. Each set of drilling and sampling mechanisms is set vertically.

[0008] The second circular plate is rotatably equipped with multiple first circular rods for driving the rotation of multiple sets of drilling and sampling mechanisms respectively;

[0009] A vertical drive mechanism is provided between the first circular plate and the second circular plate to drive the second circular plate and multiple first circular rods to rise and fall synchronously.

[0010] The first circular plate is provided with a rotary drive mechanism for driving multiple first circular rods to rotate synchronously;

[0011] Below the second circular plate is a coaxial annular support plate, on which a frame for supporting the first circular plate is mounted.

[0012] Preferably, each drilling and sampling mechanism includes a screw drill, a sampling cylinder, and a lifting assembly;

[0013] The screw drill is set vertically, and a circular hole is opened at the upper end of the screw drill and is coaxial with it. The sampling cylinder is slidably set in the circular hole along the vertical direction.

[0014] A circular mounting plate is coaxially mounted on the upper end of the screw drill, and the circular mounting plate is coaxially set at the lower end of the first circular rod corresponding to it;

[0015] The center of the screw drill is set as the polished rod section, and two vertically arranged first strip grooves are opened on the outer wall of the polished rod section, each of which is connected to the round hole;

[0016] The lower end of the sampling tube has two vertically arranged second strip grooves;

[0017] The lifting assembly is located at the upper end of the screw and can drive the sampling tube to slide upward in the circular hole when the screw drill descends to drill a hole in the soil.

[0018] Preferably, the lifting assembly includes a first annular plate and a second annular plate;

[0019] A first annular protrusion coaxial with the inner side of the upper end of the first annular plate is provided, and a second annular protrusion coaxial with the inner side of the lower end of the second annular plate is provided. The first annular plate is located below the second annular plate, and the second annular protrusion is rotatably disposed inside the first annular protrusion.

[0020] Two vertically arranged third strip grooves are opened on the outer wall of the upper end of the screw drill, and two horizontally extending strip rods are provided on the outer wall of the upper end of the sampling cylinder. The two strip rods pass through the two third strip grooves to the outside of the screw drill, and the ends of the two strip rods are fixedly connected to the second annular plate. The two strip rods are slidably arranged in the two third strip grooves in the vertical direction.

[0021] An annular groove is provided on the outer wall of the circular mounting plate, and a third annular plate is rotatably installed inside the annular groove.

[0022] The upper end of the second annular plate is provided with two guide rods, and the third annular plate is provided with two guide holes, with the two guide rods slidably disposed in the two guide holes respectively;

[0023] Each guide rod is fitted with a spring, and each spring is located between the second and third annular plates.

[0024] Preferably, the corners of the two outer edges of the first groove are chamfered.

[0025] Preferably, each of the first round rods has an annular groove coaxially arranged at its lower end;

[0026] Two first bearing seats are installed at the annular groove on each first circular rod, and the two first bearing seats are respectively installed at the upper and lower ends of the second circular plate;

[0027] The second circular plate has multiple clearance slots, and multiple first circular rods are respectively rotatably set in the multiple clearance slots.

[0028] Preferably, the vertical drive mechanism includes multiple linear actuators and multiple flanges;

[0029] Multiple linear actuators are fixedly installed vertically at the lower end of the first circular plate, and multiple flanges are installed at the upper end of the second circular plate. The output ends of the multiple linear actuators are fixedly connected to the multiple flanges respectively.

[0030] Preferably, the rotary drive mechanism includes multiple sleeves and multiple second rods;

[0031] The upper end of each of the multiple first round rods is provided with a first cylindrical block coaxial with it, and multiple sleeves are respectively fitted onto the multiple first cylindrical blocks;

[0032] Multiple second round rods are coaxially arranged with multiple first round rods, and each of the multiple second round rods has a second cylindrical block coaxially arranged at its lower end. The multiple second cylindrical blocks are inserted into multiple sleeves.

[0033] Each sleeve has a fourth annular plate installed at both ends, and the first and second round rods at each sleeve are respectively inserted into the two fourth annular plates;

[0034] Multiple second round rods extend vertically upwards to the top of the first round plate, and multiple second round rods are rotatably connected to the first round plate;

[0035] Two vertically extending strip blocks are provided on the inner wall of each sleeve;

[0036] The first cylindrical block has a first sliding groove that slides with the two strip blocks;

[0037] The second cylindrical block has a second sliding groove that slides with the two strip blocks.

[0038] Preferably, the rotary drive mechanism further includes a first mounting bracket, a second mounting bracket, and a rotary driver;

[0039] The first mounting bracket is mounted on the first circular plate, and the second mounting bracket is positioned above the first mounting bracket;

[0040] A second round rod located at the center of the first round plate extends vertically upward to the top of the first mounting bracket. The rotary drive is fixedly mounted on the second mounting bracket, and the output shaft of the rotary drive is connected to the second round rod via a coupling.

[0041] The second circular rod located at the center of the first circular plate is connected to each of the other second circular rods by a linkage mechanism that enables the two second circular rods to rotate synchronously.

[0042] Preferably, each linkage mechanism includes a crossbar, a vertical bearing seat, and two first bevel gears;

[0043] A second bevel gear is installed on the second round rod located at the center of the first round plate, and a third bevel gear is installed on each of the other second round rods.

[0044] The crossbar is inserted into the inner ring of the bearing in the vertical bearing housing, and the vertical bearing housing is installed on the first mounting bracket.

[0045] Two first bevel gears are respectively installed at the two ends of the crossbar, one of which meshes with the second bevel gear and the other with the third bevel gear.

[0046] Preferably, the lower end of the annular bearing plate is equipped with multiple self-locking casters.

[0047] The advantages of this application compared to the prior art are:

[0048] 1. This application enables the drilling and sampling mechanism to break up the soil through the combined action of the rotary drive mechanism and the vertical drive mechanism. The drilling and sampling mechanism can collect soil samples while breaking up the soil. Since the drilling and sampling mechanism has multiple sets, the sampling device can simultaneously sample the soil geology of multiple areas, effectively improving the sampling efficiency of the sampling device.

[0049] 2. This application can drive multiple first round rods to rotate synchronously with a single rotary driver, without affecting the lifting and lowering of the multiple first round rods. Attached Figure Description

[0050] Figure 1 This is a perspective view of a multi-area petroleum geological sampling device according to this application;

[0051] Figure 2 This is a three-dimensional sectional view of a multi-area sampling device for petroleum geology according to this application;

[0052] Figure 3 This application Figure 2 Enlarged view of a portion of point A in the middle;

[0053] Figure 4This application Figure 2 Enlarged view of a section at point B in the middle;

[0054] Figure 5 This is a perspective view of a partial structure of a multi-region sampling device for petroleum geology according to this application;

[0055] Figure 6 This is an exploded view of the borehole sampling mechanism of a multi-area petroleum geological sampling device according to this application;

[0056] Figure 7 This is an exploded three-dimensional view of the first and second round rods of a multi-area petroleum geological sampling device according to this application.

[0057] Figure 8 This is an elevation sectional view of the sleeve of a multi-area sampling device for petroleum geology according to this application;

[0058] Figure 9 This is a partial three-dimensional view of the first round rod, the second round rod, and the linkage mechanism of a multi-area petroleum geological sampling device according to this application;

[0059] Figure 10 This is a vertical cross-sectional view of a screw drill for a multi-area sampling device for petroleum geology according to this application.

[0060] The numbers on the map are:

[0061] 1-First circular plate;

[0062] 2-Second circular plate; 21-Allowing groove;

[0063] 3-Drilling and sampling mechanism; 31-Screw drill; 311-Round hole; 312-Round mounting plate; 3121-Annular groove; 313-Smooth rod; 3131-First strip groove; 314-Third strip groove; 32-Sampling cylinder; 321-Second strip groove; 322-Strip rod; 33-Lifting assembly; 34-First annular plate; 341-First annular protrusion; 35-Second annular plate; 351-Second annular protrusion; 352-Guide rod; 36-Third annular plate; 361-Guide hole; 37-Spring;

[0064] 4-First round rod; 41-Annular groove; 42-First bearing seat; 43-First cylindrical block; 431-First sliding groove;

[0065] 5-Vertical drive mechanism; 51-Linear actuator; 52-Flange;

[0066] 6-Rotary drive mechanism; 61-Sleeve; 611-Strip block; 62-Second round rod; 621-Second cylindrical block; 6211-Second slide groove; 63-Fourth annular plate; 64-First mounting bracket; 65-Second mounting bracket; 66-Rotary drive; 67-Linkage mechanism; 671-Cross bar; 672-Vertical bearing seat; 673-First bevel gear; 674-Second bevel gear; 675-Third bevel gear;

[0067] 7-Ring bearing plate; 71-Frame; 72-Self-locking casters. Detailed Implementation

[0068] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0069] See Figures 1 to 10 As shown, a multi-area sampling device for petroleum geology includes a first circular plate 1 and a second circular plate 2, which are coaxially arranged with the first circular plate 1 located above the second circular plate 2.

[0070] The lower end of the second circular plate 2 is evenly provided with multiple sets of drilling and sampling mechanisms 3 that can collect soil samples while drilling holes in the soil. Each set of drilling and sampling mechanisms 3 is set vertically.

[0071] The second circular plate 2 is rotatably equipped with multiple first circular rods 4 for driving multiple sets of drilling and sampling mechanisms 3 to rotate respectively;

[0072] A vertical drive mechanism 5 is provided between the first circular plate 1 and the second circular plate 2 for driving the second circular plate 2 and multiple first circular rods 4 to rise and fall synchronously.

[0073] The first circular plate 1 is provided with a rotary drive mechanism 6 for driving multiple first circular rods 4 to rotate synchronously;

[0074] Below the second circular plate 2, there is also a coaxial annular support plate 7, and a frame 71 for supporting the first circular plate 1 is provided on the annular support plate 7.

[0075] When sampling soil in petroleum geology, the sampling device is first transported to the sampling area by staff. Then, the sampling device is placed on the ground. At this time, the rotary drive mechanism 6 operates, causing multiple first round rods 4 to rotate synchronously. Therefore, while the multiple first round rods 4 rotate, multiple sets of drilling sampling mechanisms 3 rotate together with them. Then, the vertical drive mechanism 5 drives the second round plate 2 and the multiple first round rods 4 to descend synchronously, causing multiple sets of drilling sampling mechanisms 3 to descend together. The multiple sampling mechanisms move vertically downwards while rotating, allowing multiple sets of drilling sampling mechanisms to obtain samples. The sampling mechanism 3 is inserted into the soil at different locations and can collect soil. Finally, the vertical drive mechanism 5 is reset, and the rotary drive mechanism 6 also stops running. At this time, the staff can take out the soil sample after the sampling is completed. Under the combined action of the rotary drive mechanism 6 and the vertical drive mechanism 5, the drilling and sampling mechanism 3 can collect soil samples while drilling and breaking the soil. Since the drilling and sampling mechanism 3 has multiple sets, the sampling device can simultaneously sample the soil geology of multiple areas, effectively improving the sampling efficiency of the sampling device.

[0076] See Figures 1 to 3 , Figure 6 and Figure 10 As shown, each drilling and sampling mechanism 3 includes a screw drill 31, a sampling cylinder 32, and a lifting assembly 33;

[0077] The screw drill 31 is vertically arranged, and a circular hole 311 is provided at the upper end of the screw drill 31, which is coaxial with it. The sampling cylinder 32 is slidably arranged in the circular hole 311 along the vertical direction.

[0078] A circular mounting plate 312 is coaxially mounted on the upper end of the screw drill 31, and the circular mounting plate 312 is coaxially set at the lower end of the corresponding first circular rod 4.

[0079] The center of the screw drill 31 is set as a smooth rod part 313. Two vertically arranged first strip grooves 3131 are opened on the outer wall of the smooth rod part 313. Each first strip groove 3131 is connected to the round hole 311.

[0080] The lower end of the sampling cylinder 32 has two vertically arranged second strip grooves 321;

[0081] The lifting assembly 33 is located at the upper end of the screw and can drive the sampling cylinder 32 to slide upward in the circular hole 311 when the screw drill 31 descends to drill a hole in the soil.

[0082] In the initial state, the sampling cylinder 32 rests against the bottom of the circular hole 311, and the second strip groove 321 is entirely located below the first strip groove 3131. The distance between the upper end of the second strip groove 321 and the lower end of the first strip groove 3131 is also relatively close. When the rotary drive mechanism 6 drives the multiple first round rods 4 to rotate, the multiple screw drills 31 can rotate together with their corresponding first round rods 4. Then, when the vertical drive mechanism 5 drives the multiple first round rods 4 to descend, the multiple screw drills 31 can descend together with the multiple first round rods 4. Under the rotation of the screw drills 31, the screw drills 31 can easily be inserted into the soil. After the screw drills 31 descend to a certain depth, the soil at the drilled hole can overflow upwards along the threaded grooves of the screw drills 31. This process... In the process, under the action of the lifting component 33, when the screw drill 31 descends to drill a hole in the soil, it drives the sampling cylinder 32 to slide upward in the circular hole 311. When the sampling cylinder 32 slides upward in the circular hole 311, the two second strip grooves 321 on the sampling cylinder 32 will be connected to the two first strip grooves 3131 respectively. This allows the soil broken by the screw to slide from the first strip groove 3131 into the second strip groove 321 and eventually fall into the sampling cylinder 32. During the process of the screw drill 31 rising and resetting, the sampling cylinder 32 will gradually come against the bottom of the circular hole 311 again, and a certain amount of soil can be collected in the sampling cylinder 32. It should be noted that the outer diameter of the sampling cylinder 32 is the same as the diameter of the circular hole 311, which can prevent soil from falling into the circular hole 311.

[0083] See Figure 2 , Figure 3 and Figure 6 As shown, the lifting assembly 33 includes a first annular plate 34 and a second annular plate 35;

[0084] The inner side of the upper end of the first annular plate 34 is provided with a first annular protrusion 341 coaxial with it, and the inner side of the lower end of the second annular plate 35 is provided with a second annular protrusion 351 coaxial with it. The first annular plate 34 is located below the second annular plate 35, and the second annular protrusion 351 is rotatably disposed inside the first annular protrusion 341.

[0085] Two vertically arranged third strip grooves 314 are provided on the outer wall of the upper end of the screw drill 31. Two horizontally extending strip rods 322 are provided on the outer wall of the upper end of the sampling cylinder 32. The two strip rods 322 pass through the two third strip grooves 314 to the outside of the screw drill 31. The ends of the two strip rods 322 are fixedly connected to the second annular plate 35. The two strip rods 322 are slidably arranged in the two third strip grooves 314 in the vertical direction.

[0086] An annular groove 3121 is provided on the outer wall of the circular mounting plate 312, and a third annular plate 36 is rotatably disposed in the annular groove 3121.

[0087] The upper end of the second annular plate 35 is provided with two guide rods 352, and the third annular plate 36 is provided with two guide holes 361, and the two guide rods 352 are slidably disposed in the two guide holes 361 respectively.

[0088] Each guide rod 352 is fitted with a spring 37, and each spring 37 is located between the second annular plate 35 and the third annular plate 36.

[0089] After the screw drill 31 penetrates the soil, the first annular plate 34 descends along with it. Eventually, the first annular plate 34 rests against the ground. At this point, the screw drill 31 continues to descend, and the third annular plate 36 also descends along with it. The second annular plate 35 rests against the upper end of the first annular protrusion 341. Therefore, during this process, the sampling cylinder 32 can slide upwards within the circular hole 311 relative to the screw drill 31, allowing the two first strip grooves 3131 to connect with the two second strip grooves 321 respectively. The third annular plate 36 can then slide downwards along the two guide rods 352. Spring 37 is compressed, and because both strip rods 322 are slidably disposed vertically within the two third strip grooves 314, the two strip rods 322 will slide to the upper ends of the two third strip grooves 314 respectively. Since the second annular protrusion 351 is rotatably disposed inside the first annular protrusion 341, and the third annular plate 36 is rotatably disposed within the annular groove 3121, the second annular plate 35 can rotate along with the screw drill 31 during its rotation. Under the action of the two guide rods 352, the third annular plate 36 will also rotate along with the second annular plate 35. When the screw... After the drill 31 descends to a certain depth, the two first strip grooves 3131 connect with the two second strip grooves 321 respectively. At this point, the descent of the screw drill 31 stops, and the screw drill 31 only rotates. Under the rotation of the screw drill 31, it is more conducive to the broken soil sliding into the sampling cylinder 32. After the sampling cylinder 32 has completed sampling, the vertical drive mechanism 5 drives the screw drill 31 to rise. During the rising process of the screw drill 31, the bottom of the sampling cylinder 32 will gradually abut against the bottom of the circular hole 311, so that the two second strip grooves 321 slide completely below the two first strip grooves 3131. Under the elastic force of the spring 37, the sampling tube 32 can be tightly pressed against the bottom of the round hole 311, preventing the soil in the sampling tube 32 from overflowing from the first strip groove 3131 and the second strip groove 321 during the upward process. Finally, after the screw drill 31 is completely off the ground, the staff presses the first annular plate 34 to move towards the third annular plate 36, thereby compressing the spring 37. The two second strip grooves 321 can then reconnect with the two first strip grooves 3131 respectively. At this time, the staff can take out the soil in the sampling tube 32, thus completing the soil sampling.

[0090] See Figure 6 and Figure 10 As shown, the corners of the two first strip grooves 3131 are all chamfered.

[0091] By chamfering all the edges and corners of the first strip groove 3131, the broken soil can more easily slide from the first strip groove 3131 into the sampling tube 32.

[0092] See Figure 2 and Figure 7 As shown, each of the first round rods 4 has an annular groove 41 coaxially arranged at its lower end;

[0093] Two first bearing seats 42 are installed at the annular groove 41 on each first round rod 4, and the two first bearing seats 42 are respectively installed at the upper and lower ends of the second round plate 2;

[0094] The second circular plate 2 has multiple clearance grooves 21, and multiple first circular rods 4 are respectively rotatably arranged in the multiple clearance grooves 21.

[0095] Each of the first round rods 4 has an annular groove 41 inserted into the inner ring of the two corresponding first bearing seats 42, and the inner rings of the two first bearing seats 42 abut against the two ends of the annular groove 41. Therefore, the multiple first round rods 4 can be rotatably mounted on the second round plate 2. Since the first bearing seats 42 are all mounted on the second round plate 2, the first round rods 4 can drive the second round plate 2 to rise and fall together when they are raised and lowered.

[0096] See Figure 1 and Figure 2 As shown, the vertical drive mechanism 5 includes multiple linear actuators 51 and multiple flanges 52;

[0097] Multiple linear actuators 51 are fixedly installed vertically at the lower end of the first circular plate 1, and multiple flanges 52 are installed at the upper end of the second circular plate 2. The output ends of the multiple linear actuators 51 are respectively fixedly connected to the multiple flanges 52.

[0098] Since the first circular plate 1 is fixedly mounted above the annular support plate 7 via the frame 71, there is a fixed distance between the first circular plate 1 and the annular support plate 7. When multiple linear drives 51 operate synchronously, they can drive the second circular plate 2 to descend. Since each first circular rod 4 is fixed to the position between the second circular plate 2 and the two first bearing seats 42, multiple first circular rods 4 can descend together with the second circular plate 2 when the second circular plate 2 descends.

[0099] See Figures 1 to 4 , Figure 7 and Figure 8 As shown, the rotary drive mechanism 6 includes multiple sleeves 61 and multiple second round rods 62;

[0100] The upper ends of the multiple first round rods 4 are each provided with a first cylindrical block 43 coaxial with them, and multiple sleeves 61 are respectively sleeved on the multiple first cylindrical blocks 43;

[0101] Multiple second round rods 62 are coaxially arranged with multiple first round rods 4 respectively. The lower end of each of the multiple second round rods 62 is provided with a second cylindrical block 621 coaxially arranged with it. The multiple second cylindrical blocks 621 are respectively inserted into multiple sleeves 61.

[0102] Each sleeve 61 has a fourth annular plate 63 installed at both ends, and the first round rod 4 and the second round rod 62 at each sleeve 61 are respectively inserted into the two fourth annular plates 63;

[0103] Multiple second round rods 62 extend vertically upward to the top of the first round plate 1, and multiple second round rods 62 are rotatably connected to the first round plate 1;

[0104] Two vertically extending strip blocks 611 are provided on the inner wall of each sleeve 61;

[0105] The first cylindrical block 43 has a first groove 431 that slides and engages with the two strip blocks 611;

[0106] The second cylindrical block 621 is provided with a second sliding groove 6211 that slides and engages with the two strip blocks 611;

[0107] The rotary drive mechanism 6 also includes a first mounting bracket 64, a second mounting bracket 65, and a rotary driver 66;

[0108] The first mounting bracket 64 is mounted on the first circular plate 1, and the second mounting bracket 65 is positioned above the first mounting bracket 64;

[0109] A second round rod 62 located at the center of the first round plate 1 extends vertically upward to the top of the first mounting bracket 64. A rotary driver 66 is fixedly mounted on the second mounting bracket 65, and the output shaft of the rotary driver 66 is connected to the second round rod 62 via a coupling.

[0110] A linkage mechanism 67 is provided between the second round rod 62 located at the center of the first round plate 1 and each of the other second round rods 62, which enables the two second round rods 62 to rotate synchronously.

[0111] Each linkage mechanism 67 includes a crossbar 671, a vertical bearing seat 672, and two first bevel gears 673;

[0112] A second bevel gear 674 is installed on the second round rod 62 located at the center of the first round plate 1, and a third bevel gear 675 is installed on each of the other second round rods 62.

[0113] The crossbar 671 is inserted into the bearing inner ring of the vertical bearing housing 672, and the vertical bearing housing 672 is mounted on the first mounting bracket 64.

[0114] Two first bevel gears 673 are respectively installed at the two ends of the crossbar 671. One of the first bevel gears 673 is meshed with the second bevel gear 674, and the other first bevel gear 673 is meshed with the third bevel gear 675.

[0115] When the rotary drive 66 is running, it can drive the second circular rod 62 located at the center of the first circular plate 1 to rotate. When the second circular rod 62 rotates, the second bevel gear 674 can rotate along with it. At this time, the multiple first bevel gears 673 meshing with the second bevel gear 674 will also rotate. The multiple crossbars 671 will also rotate in the multiple vertical bearing seats 672 respectively, so that the first bevel gear 673 on the outer side of each crossbar 671 will also rotate around the crossbar 671. At this point, the multiple third bevel gears 675 will also rotate, thus rotating... The rotation of the rotary drive 66 causes multiple second round rods 62 to rotate synchronously. Since each second cylindrical block 621 has a second sliding groove 6211 and each sliding sleeve has a strip block 611, multiple sleeves 61 can rotate together with the corresponding second round rods 62. Since the first cylindrical block 43 has a first sliding groove 431, multiple first round rods 4 will also rotate together with the corresponding second round rods 62. When multiple first round rods 4 descend, multiple first round rods 4 can slide vertically downward in their corresponding sliding sleeves.

[0116] See Figure 1 As shown, multiple self-locking casters 72 are installed at the lower end of the annular bearing plate 7.

[0117] By providing multiple self-locking casters 72, the sampling device can be easily moved by the staff, making it convenient to move the sampling device to different positions. Since the self-locking casters 72 have a self-locking function, locking the self-locking casters 72 can prevent the sampling device from shifting during sampling.

[0118] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A multi-area sampling device for petroleum geology, comprising a first circular plate (1) and a second circular plate (2), wherein the first circular plate (1) and the second circular plate (2) are coaxially arranged and the first circular plate (1) is located above the second circular plate (2); characterized in that, The lower end of the second circular plate (2) is uniformly provided with multiple sets of drilling and sampling mechanisms (3) capable of simultaneously drilling holes in the soil and collecting soil samples. Each set of drilling and sampling mechanisms (3) is vertically arranged. Multiple first circular rods (4) are rotatably arranged on the second circular plate (2) to drive the multiple sets of drilling and sampling mechanisms (3) to rotate respectively. A vertical drive mechanism (5) is provided between the first circular plate (1) and the second circular plate (2) to drive the second circular plate (2) and the multiple first circular rods (4) to rise and fall synchronously. A rotary drive mechanism (6) is provided on the first circular plate (1) to drive the multiple first circular rods (4) to rotate synchronously. A coaxial annular bearing plate (7) is also provided below the second circular plate (2). The annular bearing plate (7) is provided with... The frame (71) used to support the first circular plate (1) includes a screw drill (31), a sampling cylinder (32), and a lifting assembly (33) in each drilling and sampling mechanism (3). The screw drill (31) is vertically arranged, and a circular hole (311) is opened at the upper end of the screw drill (31) and is coaxially arranged with it. The sampling cylinder (32) is slidably arranged in the circular hole (311) in the vertical direction. A circular mounting plate (312) is coaxially installed at the upper end of the screw drill (31) and is coaxially arranged at the lower end of the corresponding first circular rod (4). The center of the screw drill (31) is set as a smooth rod part (313), and two vertically arranged first strip grooves (3131) are opened on the outer wall of the smooth rod part (313). Each first strip groove... The grooves (3131) are all connected to the round hole (311); the lower end of the sampling tube (32) has two vertically arranged second strip grooves (321); the lifting assembly (33) is located at the upper end of the screw and can drive the sampling tube (32) to slide upward in the round hole (311) when the screw drill (31) descends to drill the soil hole. The lifting assembly (33) includes a first annular plate (34) and a second annular plate (35); the inner side of the upper end of the first annular plate (34) is provided with a first annular protrusion (341) coaxial with it, and the inner side of the lower end of the second annular plate (35) is provided with a second annular protrusion (351) coaxial with it. The first annular plate (34) is located below the second annular plate (35), and the second annular protrusion (351) is located below the second annular plate (35). 351) Rotatably disposed inside the first annular protrusion (341); two vertically arranged third strip grooves (314) are opened on the outer wall of the upper end of the screw drill (31), and two horizontally extending strip rods (322) are provided on the outer wall of the upper end of the sampling cylinder (32). The two strip rods (322) pass through the two third strip grooves (314) to the outside of the screw drill (31), and the ends of the two strip rods (322) are fixedly connected to the second annular plate (35). The two strip rods (322) are slidably disposed in the two third strip grooves (314) in the vertical direction; an annular groove (3121) is opened on the outer wall of the circular mounting plate (312), and a third annular plate (36) is rotatably disposed in the annular groove (3121).The upper end of the second annular plate (35) is provided with two guide rods (352), and the third annular plate (36) has two guide holes (361). The two guide rods (352) are slidably disposed in the two guide holes (361). Each guide rod (352) is fitted with a spring (37), and each spring (37) is located between the second annular plate (35) and the third annular plate (36).

2. The petroleum geology multi-region sampling device according to claim 1, characterized in that, The corners of the two first grooves (3131) are all chamfered.

3. The petroleum geology multi-region sampling device according to claim 2, characterized in that, Each first round rod (4) has an annular groove (41) coaxially arranged at its lower end; each first round rod (4) has two first bearing seats (42) installed at the annular groove (41), and the two first bearing seats (42) are respectively installed at the upper and lower ends of the second round plate (2); the second round plate (2) has multiple clearance grooves (21), and the multiple first round rods (4) are respectively rotatably arranged in the multiple clearance grooves (21).

4. The petroleum geology multi-region sampling device according to claim 3, characterized in that, The vertical drive mechanism (5) includes multiple linear actuators (51) and multiple flanges (52); the multiple linear actuators (51) are all fixedly installed in a vertical state at the lower end of the first circular plate (1), the multiple flanges (52) are all installed at the upper end of the second circular plate (2), and the output ends of the multiple linear actuators (51) are respectively fixedly connected to the multiple flanges (52).

5. A multi-region petroleum geological sampling device according to claim 4, characterized in that, The rotary drive mechanism (6) includes multiple sleeves (61) and multiple second round rods (62); the upper ends of multiple first round rods (4) are provided with first cylindrical blocks (43) coaxial with them, and multiple sleeves (61) are respectively sleeved on multiple first cylindrical blocks (43); multiple second round rods (62) are respectively coaxial with multiple first round rods (4), and the lower ends of multiple second round rods (62) are provided with second cylindrical blocks (621) coaxial with them, and multiple second cylindrical blocks (621) are respectively inserted into multiple sleeves (61); each sleeve (61) has a fourth annular plate (63) installed at both ends, and the first round rod (4) and the second round rod (62) at each sleeve (61) are respectively inserted into the two fourth annular plates (63); multiple second round rods (62) extend vertically upward to the top of the first round plate (1), and multiple second round rods (62) are rotatably connected to the first round plate (1); Two vertically extending strip blocks (611) are provided on the inner wall of each sleeve (61); a first groove (431) is provided on the first column block (43) to slide and engage with the two strip blocks (611); a second groove (6211) is provided on the second column block (621) to slide and engage with the two strip blocks (611).

6. A multi-region petroleum geological sampling device according to claim 5, characterized in that, The rotary drive mechanism (6) also includes a first mounting bracket (64), a second mounting bracket (65), and a rotary driver (66); the first mounting bracket (64) is mounted on the first circular plate (1), and the second mounting bracket (65) is positioned above the first mounting bracket (64); a second circular rod (62) located at the center of the first circular plate (1) extends vertically upward to the top of the first mounting bracket (64), the rotary driver (66) is fixedly mounted on the second mounting bracket (65), and the output shaft of the rotary driver (66) is connected to the second circular rod (62) via a coupling; a linkage mechanism (67) is provided between the second circular rod (62) located at the center of the first circular plate (1) and each of the other second circular rods (62) to enable the two second circular rods (62) to rotate synchronously.

7. A multi-region petroleum geological sampling device according to claim 6, characterized in that, Each linkage mechanism (67) includes a crossbar (671), a vertical bearing seat (672), and two first bevel gears (673); a second bevel gear (674) is installed on the second round rod (62) located at the center of the first round plate (1), and a third bevel gear (675) is installed on each of the other second round rods (62); the crossbar (671) is inserted into the bearing inner ring of the vertical bearing seat (672), and the vertical bearing seat (672) is installed on the first mounting bracket (64); the two first bevel gears (673) are respectively installed at the two ends of the crossbar (671), one of the first bevel gears (673) meshes with the second bevel gear (674), and the other first bevel gear (673) meshes with the third bevel gear (675).

8. A multi-region petroleum geological sampling device according to claim 7, characterized in that, Multiple self-locking casters (72) are installed at the lower end of the annular bearing plate (7).

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