A stratified sampling device and sampling method for land engineering survey

Abstract

The present invention discloses a stratified sampling device and a sampling method for land engineering survey, which belongs to the technical field of land engineering survey; it includes a fixed plate, the lower side of the fixed plate is rotatably connected with a threaded rod, the outer side of the threaded rod is threadedly connected with two threaded barrels, the outer side of the threaded barrel is fixedly connected with a mounting plate, a rotating barrel is rotatably connected between the two mounting plates, a plurality of blocking rods are slidably penetrated in the rotating barrel, a motor is fixedly connected to the lower side of the fixed plate, and a rotating shaft is fixedly connected to the output end of the motor. The present invention first places the device as a whole in the excavated sampling point, and the cutting plate is opposite to the soil layer to be sampled, and then the motor is started, and the sampling operation can be automatically performed, which reduces the workload of workers, is simple to operate, and has high work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of land engineering survey, and in particular to a stratified sampling device for land engineering survey and a sampling method thereof. Background Art

[0002] Land engineering survey refers to the investigation, exploration, testing, monitoring, analysis, calculation and prediction of the geotechnical conditions of the construction site and the interaction between them and the construction. When conducting land engineering survey, it is necessary to sample the soil, analyze the sampled soil, and then obtain the corresponding data to complete the land engineering survey. The overall operation involves a wide range and the overall workload is large.

[0003] When sampling, the excavated soil is classified manually to achieve the stratified sampling effect. The manual stratification has low work efficiency and cannot perform sampling operations on a certain layer of soil. The overall workload is large. During the excavation process, soil is likely to remain on the excavation equipment and needs to be cleaned manually, which seriously delays the normal sampling work. Therefore, a stratified sampling device and a sampling method for land engineering survey are provided. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a stratified sampling device and a sampling method for land engineering survey.

[0005] The present invention adopts the following technical solutions:

[0006] A stratified sampling device for land engineering survey comprises a fixed plate, a threaded rod is rotatably connected to the lower side of the fixed plate, two threaded barrels are threadedly connected to the outer side of the threaded barrel, a mounting plate is fixedly connected to the outer side of the threaded barrel, a rotating barrel is rotatably connected between the two mounting plates, a plurality of baffle rods slide through the rotating barrel, a motor is fixedly connected to the lower side of the fixed plate, a rotating shaft is fixedly connected to the output end of the motor, a plurality of baffle rods are fixedly connected to the rotating shaft, an arc plate is fixedly connected between the two mounting plates, a square barrel is fixedly connected to the side wall of the arc plate, and the Two cutting plates are fixedly connected to the side wall of the arc-shaped plate, and a control shaft is also rotatably connected between the two mounting plates. The control shaft rotates through the cutting plate, and the control shaft is connected to the rotating cylinder through a first pulley assembly. Two rotating plates are fixedly connected to the outer side of the control shaft, and a third connecting plate is fixedly connected between the two rotating plates. A positioning plate is also fixedly connected to the outer side of the control shaft, and the positioning plate is respectively fixedly connected to the two rotating plates and the third connecting plate. A plurality of storage boxes are installed on the lower side of the fixed plate through a mounting assembly, and the side walls of the plurality of storage boxes are provided with gaps.

[0007] Preferably, the mounting assembly includes a square rod slidably mounted on the side wall of the fixed plate, the upper side of the square rod is fixedly connected to the first connecting plate, the side wall of the square rod is fixedly connected to the fourth connecting plate, the upper side of each of the storage boxes is fixedly connected to a threaded mounting rod, and the lower side of each of the storage boxes is provided with a threaded groove, multiple storage boxes are spliced ​​together by the cooperation of the threaded mounting rod and the threaded groove, and the threaded mounting rod on the uppermost storage box threads through the fourth connecting plate, the lower side of the fixed plate is fixedly connected to a shell, a limiting plate is rotatably connected to the shell, the lower side of the limiting plate is fixedly connected to a telescopic sleeve, a plurality of fifth connecting plates are slidably connected in the square rod, a third spring is fixedly connected between the plurality of fifth connecting plates and the square rod, a ninth connecting rod is fixedly connected to the outer side of the fifth connecting plate, and the telescopic sleeve and the upper mounting plate are connected by a knocking assembly.

[0008] Preferably, the knocking assembly includes two second connecting plates fixedly mounted on the upper side of the upper mounting plate, the side walls of the second connecting plates are slidably connected to the third connecting rod, the two third connecting rods are commonly fixedly connected to the fourth connecting rod, a first spring is fixedly connected between the fourth connecting rod and the second connecting plate, a plurality of fifth connecting rods are evenly fixedly connected to the lower side of the fourth connecting rod, the upper side of the upper mounting plate is rotatably connected to the first connecting rod, a circular plate is fixedly connected to the upper side of the first connecting rod, a plurality of second connecting rods are fixedly connected to the side walls of the circular plate, the first connecting rod is transmission-connected to the rotating cylinder via the second pulley assembly, the telescopic sleeve is fixedly connected to the circular plate, and a knocking rod is fixedly connected to the lower side of the fifth connecting rod.

[0009] Preferably, a transmission assembly is installed in the rotating plate, and the rotating plate below is a hollow structure. The transmission assembly includes a sixth connecting rod rotatably installed in the rotating plate below, the sixth connecting rod is fixedly connected to the cutting plate below, and the outer side of the sixth connecting rod is also fixedly connected to the first bevel gear. A plurality of deep grooves are opened in the rotating plate below, and a seventh connecting rod is rotatably connected in each of the deep grooves, and the outer side of the seventh connecting rod is fixedly connected to the second bevel gear, the second bevel gear and the first bevel gear are meshed, and the outer side of the seventh connecting rod is fixedly connected to the control cylinder.

[0010] Preferably, a cleaning assembly is installed in the arc-shaped plate, and the cleaning assembly includes a plurality of eighth connecting rods slidably installed in the upper rotating plate, and a cleaning plate is fixedly connected to the lower sides of the plurality of eighth connecting rods. A second spring is fixedly connected between the cleaning plate and the upper rotating plate, and a protrusion is fixedly connected to the lower side of the upper cutting plate.

[0011] Preferably, the raised surface is smooth.

[0012] Preferably, both side walls of the fixed plate are slidably connected with a moving frame, and outer sides of the two moving frames are fixedly connected with a rubber sleeve.

[0013] Preferably, a rotating handle is fixedly connected to the outer side of the threaded rod.

[0014] A sampling method of a stratified sampling device for land engineering survey, comprising the following steps:

[0015] S1. Select sampling points and conduct excavation;

[0016] S2. Place the fixing plate on the sampling point after excavation, and make the cutting plate and storage box located inside the excavation point;

[0017] S3. Adjust the position of the cutting board so that the cutting board is opposite to the soil layer to be sampled;

[0018] S4, start the motor and start sampling;

[0019] S5. Turn off the motor and take the entire device out of the excavation point. The sampling operation is completed.

[0020] The beneficial effects of the present invention are:

[0021] 1. First, place the whole device in the excavated sampling point, and the cutting plate is opposite to the soil layer to be sampled, and then start the motor to automatically perform the sampling operation, reducing the workload of workers. The operation is simple and the work efficiency is high;

[0022] 2. Then, during the sampling process, the soil obtained from each sampling will automatically fall into the storage box, without the need for manual collection, and the weight of the soil obtained in this way is within a suitable range, thereby achieving the quantitative preservation effect of the soil;

[0023] 3. Finally, during the sampling process, the cleaning plate keeps moving up and down, which can form a cleaning operation on the inner wall of the third connecting plate, reducing the possibility of soil remaining on the inner wall of the third connecting plate. The overall automation and intelligence are relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a stratified sampling device for land engineering survey proposed by the present invention;

[0025] Figure 2 This is a schematic diagram of the connection between a fixing plate and a mounting plate in a stratified sampling device for land engineering survey proposed by the present invention;

[0026] Figure 3This is a schematic diagram of the structure of a knocking component in a layered sampling device for land engineering survey proposed by the present invention;

[0027] Figure 4 This is a schematic diagram of the connection of a mounting plate in a stratified sampling device for land engineering survey proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the connection between the mounting plate and the arc plate in a layered sampling device for land engineering survey proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of the connection between a control shaft, a first gear and a second gear in a stratified sampling device for land engineering survey proposed by the present invention;

[0030] Figure 7 This is a schematic diagram of the connection between the arc plate and the square tube in a stratified sampling device for land engineering survey proposed by the present invention;

[0031] Figure 8 This is a schematic diagram of the connection of a storage box in a stratified sampling device for land engineering survey proposed by the present invention;

[0032] Fig. 9 This is a schematic diagram of the structure of a cleaning component in a stratified sampling device for land engineering survey proposed by the present invention;

[0033] Fig.10 This is a diagram showing the motion state of a control cylinder in a stratified sampling device for land engineering survey proposed by the present invention;

[0034] Fig.11 This is a schematic diagram of the connection between the ninth connecting rod and the limiting plate in a stratified sampling device for land engineering survey proposed by the present invention;

[0035] Fig.12 This is a cross-sectional connection diagram of a cutting plate and a square tube in a stratified sampling device for land engineering survey proposed by the present invention;

[0036] Fig.13 This is a diagram showing the connection status of the first bevel gear and the second bevel gear in a stratified sampling device for land engineering survey proposed by the present invention.

[0037] In the figure: 1 fixed plate, 2 moving frame, 3 motor, 4 rotating handle, 5 first connecting plate, 6 threaded rod, 7 storage box, 8 square rod, 9 blocking rod, 10 mounting plate, 11 cutting plate, 12 control shaft, 13 first pulley assembly, 14 rotating cylinder, 15 second pulley assembly, 16 first connecting rod, 17 round plate, 18 second connecting rod, 19 second connecting plate, 20 third connecting rod, 21 first spring, 22 fourth connecting rod, 23 fifth connecting rod, 24 threaded cylinder, 25 arc Plate, 26 rotating plate, 27 third connecting plate, 28 positioning plate, 29 square tube, 30 cleaning plate, 31 second spring, 32 sixth connecting rod, 33 protrusion, 34 first bevel gear, 35 seventh connecting rod, 36 second bevel gear, 37 control tube, 38 fourth connecting plate, 39 threaded mounting rod, 40 notch, 41 eighth connecting rod, 42 telescopic sleeve, 43 shell, 44 ninth connecting rod, 45 limit plate, 46 fifth connecting plate, 47 third spring, 48 knocking rod. DETAILED DESCRIPTION

[0038] See also Figure 1-Figure 13A stratified sampling device for land engineering survey, comprising a fixed plate 1, a threaded rod 6 is rotatably connected to the lower side of the fixed plate 1, two threaded cylinders 24 are threadedly connected to the outer side of the threaded rod 6, a mounting plate 10 is fixedly connected to the outer side of the threaded cylinder 24, a rotating cylinder 14 is rotatably connected between the two mounting plates 10, a plurality of blocking rods 9 are slidably penetrated in the rotating cylinder 14, a motor 3 is fixedly connected to the lower side of the fixed plate 1, a rotating shaft is fixedly connected to the output end of the motor 3, a plurality of blocking rods 9 are fixedly connected to the rotating shaft, an arc plate 25 is fixedly connected between the two mounting plates 10, and a square plate 25 is fixedly connected to the side wall of the arc plate 25 The outer side of the control shaft 12 is fixedly connected to two rotating plates 26, and the third connecting plate 27 is fixedly connected between the two rotating plates 26. The outer side of the control shaft 12 is also fixedly connected to the positioning plate 28, and the positioning plate 28 is respectively fixedly connected to the two rotating plates 26 and the third connecting plate 27. The lower side of the fixed plate 1 is installed with a mounting assembly. A plurality of storage boxes 7, each of which has a notch 40 on its side wall, the mounting assembly comprising a square rod 8 slidably mounted on the side wall of the fixed plate 1, the upper side of the square rod 8 being fixedly connected to the first connecting plate 5, the side wall of the square rod 8 being fixedly connected to the fourth connecting plate 38, the upper side of each storage box 7 being fixedly connected to a threaded mounting rod 39, and the lower side of each storage box 7 being opened with a threaded groove, the plurality of storage boxes 7 being spliced ​​together by the cooperation of the threaded mounting rod 39 and the threaded groove, and the threaded mounting rod 39 on the uppermost storage box 7 being threadedly penetrated through the fourth connecting plate 38, the lower side of the fixed plate 1 being fixedly connected to a housing 43, a limit plate 45 is rotatably connected in the housing 43, a telescopic sleeve 42 is fixedly connected to the lower side of the limit plate 45, a plurality of fifth connecting plates 46 are slidably connected in the square rod 8, a third spring 47 is fixedly connected between the plurality of fifth connecting plates 46 and the square rod 8, a ninth connecting rod 44 is fixedly connected to the outer side of the fifth connecting plate 46, the telescopic sleeve 42 and the upper mounting plate 10 are connected by a knocking assembly, both side walls of the fixed plate 1 are slidably connected to the moving frame 2, the outer sides of the two moving frames 2 are fixedly connected to rubber sleeves to improve the friction of the moving frame 2, and the outer side of the threaded rod 6 is fixedly connected to the rotating handle 4;

[0039] When sampling operation is required, the mounting plate 10, the cutting plate 11 and the storage box 7 are placed in the sampling point as a whole, and the threaded rod 6 is rotated. Since the rotating cylinder 14, the blocking rod 9 and the rotating shaft are slidably connected, the rotating threaded rod 6 will drive the threaded cylinder 24 to move up and down, and the threaded cylinder 24 drives the mounting plate 10 and the cutting plate 11 to move up and down as a whole until the positions of the mounting plate 10 and the cutting plate 11 meet the working requirements, that is, the cutting plate 11 is located at the side wall of the soil where sampling is required, and the fixed plate 1 is moved. The fixed plate 1 drives the mounting plate 10 to move through the threaded rod 6 and the rotating shaft, and the cutting plate 11 is inserted into the side wall of the soil until the arc plate 25 and the side wall of the soil are against each other, and the motor 3 is started. The motor 3 drives the rotating cylinder 14 to rotate through the rotating shaft and the blocking rod 9, and the rotating cylinder 14 drives the control shaft 12 to rotate through the first pulley assembly 13, so as to achieve the above-mentioned effect. Figure 4 , at this time, the control shaft 12 rotates counterclockwise, and the control shaft 12 drives the rotating plate 26 and the third connecting plate 27 to rotate, and the rotating plate 26 and the third connecting plate 27 gradually move out from the arc plate 25, and the rotating plate 26 and the third connecting plate 27 enter the soil, and the soil enters the space formed by the rotating plate 26 and the third connecting plate 27. At the same time, the rotating control shaft 12 will also drive the positioning plate 28 to rotate, wherein the rotating plate 26 and the third connecting plate 27 are both semicircular. During the rotation of the rotating plate 26 and the third connecting plate 27, when the positioning plate 28 has just rotated 180 degrees, at this time, if the rotating plate 26 and the third connecting plate 27 continue to rotate, they will move into the arc plate 25 again. Fig.12 Since the lower half of the cutting plate 11 is inclined, the lower inner wall of the square tube 29 is also inclined, and the inclined surface is relatively smooth, the friction on the soil is small and can be ignored. Therefore, when the soil moves onto the cutting plate 11, the soil moves along the cutting plate 11 and the square tube 29 (the reason why the soil moves from the rotating plate 26 to the cutting plate 11 is described below), and finally enters the storage box 7 through the notch 40, thereby completing the soil sampling operation. After a soil sampling operation is completed, the cutting plate 11 can be removed from the soil, and then the above operation is repeated to move the cutting plate 11 to the corresponding sampling position again, and the motor 3 is started again to perform the next soil sampling operation, and finally the soil stratified sampling operation is completed.

[0040] The knocking assembly includes two second connecting plates 19 fixedly mounted on the upper mounting plate 10, the side walls of the second connecting plates 19 are slidably connected with the third connecting rod 20, the side walls of the two third connecting rods 20 are commonly fixedly connected with the fourth connecting rod 22, a first spring 21 is fixedly connected between the fourth connecting rod 22 and the second connecting plate 19, a plurality of fifth connecting rods 23 are evenly fixedly connected to the lower side of the fourth connecting rod 22, the upper side of the upper mounting plate 10 is rotatably connected with the first connecting rod 16, the upper side of the first connecting rod 16 is fixedly connected with the circular plate 17, the side wall of the circular plate 17 is fixedly connected with the plurality of second connecting rods 18, the first connecting rod 16 is transmission-connected with the rotating cylinder 14 through the second pulley assembly 15, the telescopic sleeve 42 is fixedly connected with the circular plate 17, and the lower side of the fifth connecting rod 23 is fixedly connected with the knocking rod 48;

[0041] First, before taking soil samples, select a suitable number of storage boxes 7 according to the actual working conditions, and then splice and install the storage boxes 7 together through the threaded mounting rod 39 and the threaded groove. Then, in the initial state, the second connecting rod 18 and the fourth connecting rod 22 are against each other, and the first spring 21 is in a stretched state. Secondly, during the soil sampling process, the rotating rotating cylinder 14 will drive the first connecting rod 16 to rotate through the second pulley assembly 15, and the first connecting rod 16 will drive the second connecting rod 18 to rotate through the circular plate 17. Since the first spring 21 is always in a stretched state, the fourth connecting rod 22 is always against the side wall of the circular plate 17 or the second connecting rod 18. During the rotation of the circular plate 17, the fourth connecting rod 22 will be moved back and forth relative to the mounting plate 10 (in degrees). Figure 3 The fourth connecting rod 22 is fixedly connected to a knocking rod 48 at its lower side, and the movable fourth connecting rod 22 drives the knocking rod 48 to move back and forth. During the back and forth movement of the knocking rod 48, the knocking rod 48 and the side wall of the square tube 29 close to the storage box 7 collide, which will knock the square tube 29 to make its inner wall vibrate, so that the soil inside the square tube 29 can enter the storage box 7 more quickly along the square tube 29, and the possibility of soil remaining inside the square tube 29 can be reduced;

[0042] Then, Figure 8 and Fig.11The fifth connecting plate 46 and the square rod 8 are connected for left and right sliding, and the spacing between two adjacent fifth connecting plates 46 is equal to the spacing between two adjacent storage boxes 7 after installation. Secondly, when the circular plate 17 rotates, the circular plate 17 drives the limit plate 45 to rotate through the telescopic sleeve 42. A through groove is opened on the outer side of the limit plate 45, and the width of the through groove is slightly larger than the width of the ninth connecting rod 44. Then, before the sampling operation is started, the notch 40 on the outer side of the storage box 7 at the lower side is opposite to the square tube 29, and the ninth connecting rod 44 at the lower side is located on the upper side of the limit plate 45 and abuts against the limit plate 45. In the overall working process, it is mainly divided into two parts: sampling and sample delivery. When the movable plate 26 and the third connecting plate 27 rotate 180° (that is, the limiting plate 45 rotates 180°), the sampling work is completed. During this process, the ninth connecting rod 44 is always located on the upper side of the limiting plate 45 and abuts against the limiting plate 45. Then, during the process of the rotating plate 26 and the third connecting plate 27 rotating from 180° to 360° (that is, the limiting plate 45 rotates from 180° to 360°), this is the sample transport part. After the limiting plate 45 is about to complete a rotation, the ninth connecting rod 44 moves to the upper side of the through slot. At this time, the ninth connecting rod 44 is located on the upper side of the through slot. The ninth connecting rod 44, the square rod 8 and the storage box 7 move downward as a whole under the action of their own gravity. During this process, since the limiting plate 45 is still in a rotating state, Fig.11 The limiting plate 45 rotates counterclockwise, thereby compressing the third spring on the left and stretching the third spring on the right, until the ninth connecting rod 44 passes through the through slot. At this time, the ninth connecting rod 44 returns to its original position relative to the square rod 8, and the ninth connecting rod 44 located on the upper side of the ninth connecting rod 44 falls on the upper side of the limiting plate 45 and again abuts against the limiting plate 45. When the limiting plate 45 continues to rotate, the above operation can be repeated, so that a storage box 7 will slide down for every rotation of the limiting plate 45, and the notch 40 on the storage box 7 after sliding down corresponds to the position of the square tube 29, which results in that in the sampling process, each time the samples are collected, the collected samples are stored in different storage boxes 7, thereby achieving the effect of stratified sampling, with a high degree of intelligence and automation.

[0043] A transmission assembly is installed in the rotating plate 26. The rotating plate 26 below is a hollow structure. The transmission assembly includes a sixth connecting rod 32 rotatably installed in the rotating plate 26 below. The sixth connecting rod 32 is fixedly connected to the cutting plate 11 below. The outer side of the sixth connecting rod 32 is also fixedly connected to a first bevel gear 34. A plurality of deep grooves are opened in the rotating plate 26 below. A seventh connecting rod 35 is rotatably connected in each deep groove. A second bevel gear 36 is fixedly connected to the outer side of the seventh connecting rod 35. The second bevel gear 36 is meshed with the first bevel gear 34. A control cylinder 37 is fixedly connected to the outer side of the seventh connecting rod 35.

[0044] First, the first bevel gear 34 and the second bevel gear 36 form an incomplete gear mechanism, that is, the number of teeth on the outer side of the first bevel gear 34 is incomplete, and then, Figure 6 is a three-dimensional connection diagram of the first bevel gear 34 and the second bevel gear 36, Fig.13 is a plane state change diagram of the first bevel gear 34 and the second bevel gear 36. Figure 6 In the figure, due to the three-dimensional structure, the angle between the second bevel gear 36 and the size between the first bevel gear 34 and the second bevel gear 36 cannot be clearly seen. Figure 6 It only shows the connection relationship between the first bevel gear 34 and the second bevel gear 36, the angle of the second bevel gear 36, and the size of the first bevel gear 34 and the second bevel gear 36. Fig.13 Secondly, during the sampling operation, since the cutting plate 11 is in a fixed state, the sixth connecting rod 32 and the first bevel gear 34 fixedly connected to the cutting plate 11 are in a fixed state. When the sampling operation begins, the second bevel gear 36 is not in meshing state with the first bevel gear 34. After the rotating plate 26 rotates to 180 degrees, that is, after the automatic sample collection is completed, the first bevel gear 34 and the second bevel gear 36 are meshed in sequence. Figure 6 Based on the direction, Fig.10 and Fig.13 In the state diagram shown, the first bevel gear 34 is in a fixed state, and the control cylinder 37 rotates clockwise as a whole. Fig.10 The first figure in the figure is a schematic diagram of the connection of the control cylinder 37 when the sampling operation begins, that is, Fig.13 In the first figure, at this time, the first bevel gear 34 is not engaged with the second bevel gear 36. When the first bevel gear 34 and the second bevel gear 36 are engaged, the control cylinder moves to Fig.10 The second figure is a schematic diagram of the connection of the control cylinder 37 when the first bevel gear 34 and the second bevel gear 36 begin to mesh, wherein: Fig.13 The second figure in the figure represents the connection state diagram of the first bevel gear 34 and the second bevel gear 36 starting to mesh, which will result in Fig.10 The middle control cylinder 37 (i.e. A) rotates clockwise, and the sampled soil is completely located on the upper side of the rotating plate 26. At this time, under the action of the rotating control cylinder 37, the sampled soil moves along the rotating plate 26, and falls onto the cutting plate 11 from the opening formed by the rotating plate 26, the third connecting plate 27 and the positioning plate 28, and finally enters the storage box 7 along the direction of the cutting plate 11, the square cylinder 29 and the notch 40. Fig.13The third figure in the figure represents a connection diagram at a certain moment when the first bevel gear 34 and all the second bevel gears 36 are in a meshing state. In this process, under the action of the control cylinder 37, after the automatic sampling is completed, the sample can be automatically transported to the storage box 7 for storage;

[0045] In the above working process, when sampling begins, the first bevel gear 34 is not meshed with any of the second bevel gears 36, and the control cylinder 37 does not rotate. After sampling is completed, when the sample transfer operation begins, the second bevel gears 36 begin to mesh with the first bevel gear 34 in turn. Since the first bevel gear 34 is in a fixed state, the second bevel gear 36 will rotate on its own, which in turn causes the control cylinder 37 to start rotating and the sample transfer operation begins.

[0046] A cleaning assembly is installed in the arc plate 25, and the cleaning assembly includes a plurality of eighth connecting rods 41 slidably installed in the upper rotating plate 26, and a cleaning plate 30 is fixedly connected to the lower side of the plurality of eighth connecting rods 41, and a second spring 31 is fixedly connected between the cleaning plate 30 and the upper rotating plate 26, and a protrusion 33 is fixedly connected to the lower side of the upper cutting plate 11, and the surface of the protrusion 33 is smooth;

[0047] First, when the rotating plate 26 rotates, the rotating plate 26 drives the cleaning plate 30 to rotate along with the rotating plate 26 through the eighth connecting rod 41. When the cleaning plate 30 and the protrusion 33 are against each other, the surfaces of the cleaning plate 30 and the protrusion 33 are against each other, thereby causing the eighth connecting rod 41 and the cleaning plate 30 to move downward relative to the third connecting plate 27. The cleaning plate 30 stretches the second spring 31. When the eighth connecting rod 41 and the protrusion 33 are disconnected, under the action of the second spring 31, the cleaning plate 30 returns to its original position relative to the third connecting plate 27. During this process, the cleaning plate 30 and the inner wall of the third connecting plate 27 are against each other, which can form a cleaning effect on the inner wall of the third connecting plate 27 and reduce the possibility of soil remaining on the inner wall of the third connecting plate 27.

[0048] A sampling method of a stratified sampling device for land engineering survey, comprising the following steps:

[0049] S1. Select sampling points and conduct excavation;

[0050] S2, placing the fixing plate 1 on the sampling point after excavation, and making the cutting plate 11 and the storage box 7 located within the excavation point;

[0051] S3, adjusting the position of the cutting plate 11 so that the cutting plate 11 is opposite to the soil layer to be sampled;

[0052] S4, start motor 3 and start sampling;

[0053] S5, turn off the motor 3, take the whole device out from the excavation point, and the sampling operation is completed.

[0054] In the present invention, when sampling operation is required, the mounting plate 10, the cutting plate 11 and the storage box 7 are placed in the sampling point as a whole, and the threaded rod 6 is rotated. Since the rotating cylinder 14, the blocking rod 9 and the rotating shaft are slidably connected, the rotating threaded rod 6 will drive the threaded cylinder 24 to move up and down, and the threaded cylinder 24 drives the mounting plate 10 and the cutting plate 11 to move up and down as a whole until the positions of the mounting plate 10 and the cutting plate 11 meet the working requirements, that is, the cutting plate 11 is located at the side wall of the soil where sampling is required, and the fixed plate 1 is moved. The fixed plate 1 drives the mounting plate 10 to move through the threaded rod 6 and the rotating shaft, and the cutting plate 11 is inserted into the side wall of the soil until the arc plate 25 and the side wall of the soil are against each other, and the motor 3 is started. The motor 3 drives the rotating cylinder 14 to rotate through the rotating shaft and the blocking rod 9, and the rotating cylinder 14 drives the control shaft 12 to rotate through the first pulley assembly 13, so as to achieve the above-mentioned effect. Figure 4 , at this time, the control shaft 12 rotates counterclockwise, and the control shaft 12 drives the rotating plate 26 and the third connecting plate 27 to rotate, and the rotating plate 26 and the third connecting plate 27 gradually move out from the arc plate 25, and the rotating plate 26 and the third connecting plate 27 enter the soil, and the soil enters the space formed by the rotating plate 26 and the third connecting plate 27. At the same time, the rotating control shaft 12 will also drive the positioning plate 28 to rotate, wherein the rotating plate 26 and the third connecting plate 27 are both semicircular. During the rotation of the rotating plate 26 and the third connecting plate 27, when the positioning plate 28 has just rotated 180 degrees, at this time, if the rotating plate 26 and the third connecting plate 27 continue to rotate, they will move into the arc plate 25 again. Fig.12 , since the lower half of the cutting plate 11 is inclined, the lower inner wall of the square tube 29 is also inclined, and the inclined surface is relatively smooth, the friction force on the soil is small and can be ignored. Therefore, when the soil moves onto the cutting plate 11, the soil moves along the cutting plate 11 and the square tube 29 (the reason why the soil moves from the rotating plate 26 to the cutting plate 11 is described below), and finally enters the storage box 7 through the notch 40, thereby completing the soil sampling operation. After one soil sampling operation is completed, the cutting plate 11 can be removed from the soil, and then the above operation is repeated to move the cutting plate 11 to the corresponding sampling position again, and the motor 3 is started again to perform the next soil sampling operation, and finally the soil stratified sampling operation is completed;

[0055] Before soil sampling, select a suitable number of storage boxes 7 according to the actual working conditions, and then splice and install the storage boxes 7 together through the threaded mounting rod 39 and the threaded groove. Then, in the initial state, the second connecting rod 18 and the fourth connecting rod 22 are against each other, and the first spring 21 is in a stretched state. Secondly, during the soil sampling process, the rotating rotating cylinder 14 will drive the first connecting rod 16 to rotate through the second pulley assembly 15, and the first connecting rod 16 will drive the second connecting rod 18 to rotate through the circular plate 17. Since the first spring 21 is always in a stretched state, the fourth connecting rod 22 is always against the side wall of the circular plate 17 or the second connecting rod 18. During the rotation of the circular plate 17, the fourth connecting rod 22 will be caused to move back and forth relative to the mounting plate 10 (in degrees). Figure 3 The fourth connecting rod 22 is fixedly connected to a knocking rod 48 at its lower side, and the movable fourth connecting rod 22 drives the knocking rod 48 to move back and forth. During the back and forth movement of the knocking rod 48, the knocking rod 48 and the side wall of the square tube 29 close to the storage box 7 collide, which will knock the square tube 29 to make its inner wall vibrate, so that the soil inside the square tube 29 can enter the storage box 7 more quickly along the square tube 29, and the possibility of soil remaining inside the square tube 29 can be reduced;

[0056] When the circular plate 17 rotates, the circular plate 17 drives the limiting plate 45 to rotate through the telescopic sleeve 42. A through groove is opened on the outer side of the limiting plate 45, and the width of the through groove is slightly larger than the width of the ninth connecting rod 44. Then, before the sampling operation is started, the notch 40 on the outer side of the lowermost storage box 7 is opposite to the square tube 29, and the lowermost ninth connecting rod 44 is located on the upper side of the limiting plate 45 and abuts against the limiting plate 45. In the overall working process, it is mainly divided into two parts: sampling and sample delivery. Among them, when the rotating plate 26 and the third connecting plate 27 rotate 180° (that is, the limiting plate 45 rotates 180°), The sampling work is completed. During this process, the ninth connecting rod 44 is always located on the upper side of the limiting plate 45 and is against the limiting plate 45. Then, in the process of the rotating plate 26 and the third connecting plate 27 rotating from 180° to 360° (that is, the limiting plate 45 rotates from 180° to 360°), this is the sample transport part. After the limiting plate 45 is about to complete a rotation, the ninth connecting rod 44 moves to the upper side of the through slot. At this time, the ninth connecting rod 44 is located on the upper side of the through slot. The ninth connecting rod 44, the square rod 8 and the storage box 7 move downward as a whole under the action of their own gravity. During this process, since the limiting plate 45 is still in a rotating state, Fig.11The limiting plate 45 rotates counterclockwise, thereby compressing the third spring on the left and stretching the third spring on the right, until the ninth connecting rod 44 passes through the through slot, at which time the ninth connecting rod 44 returns to its original position relative to the square rod 8, and the ninth connecting rod 44 located on the upper side of the ninth connecting rod 44 falls on the upper side of the limiting plate 45 and abuts against the limiting plate 45 again, and when the limiting plate 45 continues to rotate, the above operation can be repeated, so that a storage box 7 slides down for each rotation of the limiting plate 45, and the notch 40 on the storage box 7 after sliding down corresponds to the position of the square tube 29, thereby causing the collected samples to be stored in different storage boxes 7 for each collection in the sampling process, thereby achieving the effect of stratified sampling, with a high degree of intelligence and automation;

[0057] During the sampling operation, since the cutting plate 11 is in a fixed state, the sixth connecting rod 32 and the first bevel gear 34 fixedly connected to the cutting plate 11 are in a fixed state. When the sampling operation starts, the second bevel gear 36 is not in meshing state with the first bevel gear 34. When the rotating plate 26 rotates to 180 degrees, that is, after the automatic sample collection is completed, the first bevel gear 34 and the second bevel gear 36 are meshed in sequence. Figure 6 Based on the direction, Fig.10 and Fig.13 In the state diagram shown, the first bevel gear 34 is in a fixed state, and the control cylinder 37 rotates clockwise as a whole. Fig.10 The first figure in the figure is a schematic diagram of the connection of the control cylinder 37 when the sampling operation begins, that is, Fig.13 In the first figure, at this time, the first bevel gear 34 is not engaged with the second bevel gear 36. When the first bevel gear 34 and the second bevel gear 36 are engaged, the control cylinder moves to Fig.10 The second figure is a schematic diagram of the connection of the control cylinder 37 when the first bevel gear 34 and the second bevel gear 36 begin to mesh, wherein: Fig.13 The second figure in the figure represents the connection state diagram of the first bevel gear 34 and the second bevel gear 36 starting to mesh, which will result in Fig.10 The middle control cylinder 37 (i.e. A) rotates clockwise, and the sampled soil is completely located on the upper side of the rotating plate 26. At this time, under the action of the rotating control cylinder 37, the sampled soil moves along the rotating plate 26, and falls onto the cutting plate 11 from the opening formed by the rotating plate 26, the third connecting plate 27 and the positioning plate 28, and finally enters the storage box 7 along the direction of the cutting plate 11, the square cylinder 29 and the notch 40. Fig.13The third figure in the figure represents a connection diagram at a certain moment when the first bevel gear 34 and all the second bevel gears 36 are in a meshing state. In this process, under the action of the control cylinder 37, after the automatic sampling is completed, the sample can be automatically transported to the storage box 7 for storage;

[0058] When the rotating plate 26 rotates, the rotating plate 26 drives the cleaning plate 30 to rotate along with the rotating plate 26 through the eighth connecting rod 41. When the cleaning plate 30 and the protrusion 33 are against each other, the surfaces of the cleaning plate 30 and the protrusion 33 are against each other, thereby causing the eighth connecting rod 41 and the cleaning plate 30 to move downward relative to the third connecting plate 27. The cleaning plate 30 stretches the second spring 31. When the eighth connecting rod 41 and the protrusion 33 are disconnected, under the action of the second spring 31, the cleaning plate 30 returns to its original position relative to the third connecting plate 27. During this process, the cleaning plate 30 and the inner wall of the third connecting plate 27 are against each other, which can form a cleaning effect on the inner wall of the third connecting plate 27 and reduce the possibility of soil remaining on the inner wall of the third connecting plate 27.

Claims

1. A stratified sampling device for land engineering survey, comprising a fixed plate, characterized in that: A threaded rod is rotatably connected to the lower side of the fixed plate, and two threaded cylinders are threadedly connected to the outer side of the threaded rod. A mounting plate is fixedly connected to the outer side of the threaded cylinder, and a rotating cylinder is rotatably connected between the two mounting plates. Multiple baffle rods slide through the rotating cylinder, and a motor is fixedly connected to the lower side of the fixed plate. A rotating shaft is fixedly connected to the output end of the motor, and multiple baffle rods are fixedly connected to the rotating shaft. An arc plate is fixedly connected between the two mounting plates, and a square cylinder is fixedly connected to the side wall of the arc plate. Two cutting plates are fixedly connected to the side wall of the arc plate, and a control shaft is also rotatably connected between the two mounting plates. The control shaft rotates and passes through the cutting plate. The control shaft is connected to the rotating cylinder through the first pulley assembly. The outer side of the control shaft is fixedly connected to two rotating plates. A third connecting plate is fixedly connected between the two rotating plates. A positioning plate is also fixedly connected to the outer side of the control shaft. The positioning plate is fixedly connected to the two rotating plates and the third connecting plate respectively. A plurality of storage boxes are installed on the lower side of the fixed plate through the mounting assembly. The side walls of the plurality of storage boxes are provided with notches. The mounting assembly includes a square rod slidably mounted on the side wall of the fixed plate. The upper side of the square rod is fixedly connected to the first connecting plate. The side of the square rod A fourth connecting plate is fixedly connected to the wall, a threaded mounting rod is fixedly connected to the upper side of each storage box, and a threaded groove is opened on the lower side of each storage box, and multiple storage boxes are spliced ​​together through the cooperation of the threaded mounting rod and the threaded groove, and the threaded mounting rod on the uppermost storage box is threaded through the fourth connecting plate, a shell is fixedly connected to the lower side of the fixed plate, a limit plate is rotatably connected in the shell, a telescopic sleeve is fixedly connected to the lower side of the limit plate, multiple fifth connecting plates are slidably connected in the square rod, a third spring is fixedly connected between the multiple fifth connecting plates and the square rod, and the fifth connecting plate A ninth connecting rod is fixedly connected to the outer side of the plate, the telescopic sleeve and the upper mounting plate are connected by a knocking assembly, the fifth connecting plate and the square rod are connected for left and right sliding, the spacing between two adjacent fifth connecting plates is equal to the spacing between two adjacent storage boxes after installation, a through groove is opened on the outer side of the limit plate, and the width of the through groove is slightly larger than the width of the ninth connecting rod. At the beginning, the notch on the outer side of the lowermost storage box is opposite to the square tube, and the lowermost ninth connecting rod is located on the upper side of the limit plate and against the limit plate. After the sampling work is completed, the ninth connecting rod moves to the upper side of the through groove.

2. The stratified sampling equipment for land engineering survey according to claim 1 is characterized in that: The knocking assembly includes two second connecting plates fixedly mounted on the upper mounting plate, the side walls of the second connecting plates are slidably connected to the third connecting rod, the two third connecting rods are commonly fixedly connected to the fourth connecting rod, a first spring is fixedly connected between the fourth connecting rod and the second connecting plate, a plurality of fifth connecting rods are evenly fixedly connected to the lower side of the fourth connecting rod, the upper side of the upper mounting plate is rotatably connected to the first connecting rod, a circular plate is fixedly connected to the upper side of the first connecting rod, a plurality of second connecting rods are fixedly connected to the side walls of the circular plate, the first connecting rod is transmission-connected to the rotating cylinder through the second pulley assembly, the telescopic sleeve is fixedly connected to the circular plate, and the lower side of the fifth connecting rod is fixedly connected to the knocking rod.

3. The stratified sampling equipment for land engineering survey according to claim 2 is characterized in that: A transmission assembly is installed in the rotating plate, and the rotating plate below is a hollow structure. The transmission assembly includes a sixth connecting rod rotatably installed in the rotating plate below, the sixth connecting rod is fixedly connected to the cutting plate below, and the outer side of the sixth connecting rod is also fixedly connected to the first bevel gear. A plurality of deep grooves are opened in the rotating plate below, and a seventh connecting rod is rotatably connected in each deep groove, and the outer side of the seventh connecting rod is fixedly connected to the second bevel gear, the second bevel gear and the first bevel gear are meshed, and the outer side of the seventh connecting rod is fixedly connected to the control cylinder.

4. The stratified sampling equipment for land engineering survey according to claim 3 is characterized in that: A cleaning assembly is installed in the arc plate, and the cleaning assembly includes multiple eighth connecting rods slidably installed in the rotating plate above, and a cleaning plate is fixedly connected to the lower sides of the multiple eighth connecting rods. A second spring is fixedly connected between the cleaning plate and the rotating plate above, and a protrusion is fixedly connected to the lower side of the cutting plate above.

5. The stratified sampling equipment for land engineering survey according to claim 4, characterized in that: The raised surface is set smooth.

6. The stratified sampling equipment for land engineering survey according to claim 5, characterized in that: Both side walls of the fixed plate are slidably connected with moving frames, and the outer sides of the two moving frames are fixedly connected with rubber sleeves.

7. The stratified sampling equipment for land engineering survey according to claim 6, characterized in that: The outer side of the threaded rod is fixedly connected with a rotating handle.

8. A sampling method for the stratified sampling equipment for land engineering survey according to claim 7, characterized in that: The following steps are involved: S1. Select sampling points and conduct excavation; S2. Place the fixing plate on the sampling point after excavation, and make the cutting plate and storage box located inside the excavation point; S3. Adjust the position of the cutting board so that the cutting board is opposite to the soil layer to be sampled; S4, start the motor and start sampling; S5. Turn off the motor and take the entire device out of the excavation point. The sampling operation is completed.

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