Apparatus for measuring content of water in soil

Abstract

The present invention relates to the technical field of compression-resistance testing devices, and particularly relates to an apparatus for measuring the content of water in soil. The apparatus comprises a workbench and an iron sampling head, wherein an adjustable telescopic rod is fixedly mounted at the top of the workbench; a cabin is mounted at the top end of the adjustable telescopic rod; a driving assembly is accommodated inside the cabin and provided at the top end of the workbench; an anti-collision mechanism is further provided in the driving assembly; and an open slot corresponding to the iron sampling head is provided inside the workbench; and a sampling device is provided inside the iron sampling head. During the process of a driving assembly driving an iron sampling head to pass through an open slot and then be pushed into soil, when stones and hard objects appear, an anti-collision mechanism on the driving assembly comes into contact with the stones and the hard objects first, thereby preventing the iron sampling head from coming into direct contact with the stones and the hard objects and thus being damaged; and when the iron sampling head is inserted into the soil and needs to perform sampling for measurement, soil at different depths can be collected by means of a sampling device, thereby preventing soil at other depths from being mixed and thus affecting the measurement accuracy.

Description

A device for detecting water content in soil Technical Field

[0001] The present invention relates to the technical field of compression resistance detection devices, and in particular to a device for detecting water content in soil. Background Art

[0002] Currently, in the process of detecting water in the soil, it is necessary to first collect soil samples at different depths, and then use instruments and equipment to measure the soil moisture content of the collected samples directly inside the testing platform. The soil collection process is easily affected by other factors, resulting in the inability to continue subsequent soil testing.

[0003] The detection device in the prior art 202110059416.0 includes a vehicle body and a remote control machine, wherein the vehicle body has a vehicle moving structure, the remote control machine can control the vehicle moving structure, the vehicle body has a lifting structure, the lifting structure is provided with a rotating structure, the vehicle body has a propulsion structure, the propulsion structure has a probe insertion structure, the probe insertion structure is provided with a probe clamping structure, the vehicle body has a probe storage structure, and the probe storage structure is provided with a probe retrieval structure;

[0004] The above structure realizes detection at different depths through multiple adjustment structures. However, due to the different internal environmental factors of the soil at different depths, stones and hard objects are prone to appear, causing the sampling head to directly contact foreign objects, resulting in damage to the sampling head. When foreign objects come into contact, it is impossible to judge whether soil operations can continue in time, affecting the accuracy of soil detection. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a device for detecting water content in soil to solve the problem that stones and hard objects are easily present, causing the sampling head to directly contact with foreign objects and cause damage to the sampling head.

[0006] Based on the above objectives, the present invention provides a soil water content detection device, comprising a workbench and an iron sampling head, wherein an adjustable telescopic rod is fixedly mounted on the top of the workbench, a machine compartment is mounted on the top of the adjustable telescopic rod, a drive assembly is housed at the top of the workbench and inside the machine compartment, the drive assembly is used to drive the iron sampling head into the soil at different depths, and an anti-collision mechanism is also provided in the drive assembly, the anti-collision mechanism is used to protect the iron sampling head;

[0007] A slot corresponding to the iron sampling head is provided inside the workbench, and a sampling device is provided inside the iron sampling head for sampling soil at different depths.

[0008] Preferably, the driving assembly includes a forward and reverse motor installed on the top of the machine cabin, the output end of the forward and reverse motor is connected to the telescopic drill rod, the outside of the telescopic drill rod is sleeved with a sleeve rod, the bottom end of the sleeve rod abuts against the external protrusion of the telescopic drill rod, the end of the telescopic drill rod is detachably connected to the iron sampling head, one side of the telescopic drill rod is provided with a threaded rod that rotates inside the machine cabin, a gear set is provided between the threaded rod and the telescopic drill rod, the outside of the threaded rod is sleeved with a nut seat, a clamp seat is installed on one side of the nut seat, the clamp seat is sleeved on the outside of the telescopic drill rod, and an indicator light is fixedly installed on one end of the clamp seat.

[0009] Preferably, a sliding hole for moving the indicator light is opened on one side of the machine cabin, and a scale line is set on one side of the machine cabin.

[0010] Preferably, the anti-collision mechanism includes a sleeve fixedly mounted on the outside of the sleeve rod, the outside of the telescopic drill rod passes through the sleeve rod and an outer gear ring is installed inside, the outside of the outer gear ring is engaged with a gear disk, the inside of the gear disk is installed with a spiral drill rod, a corresponding metal block group is provided between the top of the spiral drill rod and the inner wall of the sleeve, the metal block group is connected to the indicator light through an electrical signal, an inner rod is inserted into the inside of the spiral drill rod, the inner rod is rotatably mounted in the sleeve, and a plurality of groups of elastic ladder blocks are distributed in a ring shape on the outside of the inner rod.

[0011] Preferably, the auger rod passes through the bottom of the sleeve, and a concave hole for accommodating multiple groups of elastic ladder blocks is opened on the top of the auger rod.

[0012] Preferably, the thickness of the outer gear ring is twice the thickness of the gear disc.

[0013] Preferably, the sampling device includes a sampling tube, the bottom end of the sampling tube is movably connected to multiple groups of cone head pieces, the inner sides of the multiple groups of cone head pieces are movably connected to connecting rods, the top ends of the multiple groups of connecting rods are hinged with electromagnet blocks, the electromagnet block is sleeved on the outside of the telescopic drill rod, and a return spring is installed on the top of the electromagnet block, a switch is installed on the outside of the machine cabin, and the switch and the electromagnet block are connected through electrical signals.

[0014] Preferably, the iron sampling head is composed of a sampling tube and multiple groups of cone head pieces, and the magnetic field poles generated by the top of the electromagnet block are used to adsorb the sampling tube.

[0015] Preferably, a slide is slidably installed inside the slot provided on the workbench, and a detection platform is installed on the top of the slide.

[0016] The beneficial effects of the present invention are as follows: after determining the position of the soil to be tested, the workbench is moved to the designated position, and the driving component drives the iron sampling head through the slot until the iron sampling head is pushed into the soil. During the process of pushing the soil, when stones or hard objects appear, the anti-collision mechanism on the driving component first contacts the stones and hard objects to avoid damage caused by direct contact of the iron sampling head. Moreover, when the iron sampling head is inserted into the soil and needs to be sampled and tested, the sampling device can collect soil at different depths to avoid mixing of soil at other depths and affecting the accuracy of the test. After the collection is completed, the driving component lifts the iron sampling head to perform soil and water body detection on the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] FIG1 is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] FIG2 is a schematic diagram of the internal structure of the cabin of the present invention;

[0020] FIG3 is a front view schematic diagram of the overall structure of the present invention;

[0021] FIG4 is a schematic structural diagram of the anti-collision mechanism of the present invention;

[0022] FIG5 is an enlarged structural diagram of part A in FIG4 of the present invention;

[0023] FIG6 is an enlarged structural diagram of part B in FIG4 of the present invention.

[0024] FIG7 is a schematic diagram of the three-dimensional structure of the spiral drill rod of the present invention.

[0025] The markings in the figure are: 1. Workbench; 11. Slotting; 12. Slide plate; 13. Testing table; 2. Adjustable telescopic rod; 3. Machine cabin; 4. Iron sampling head; 5. Drive assembly; 51. Forward and reverse motor; 52. Telescopic drill rod; 53. Sleeve rod; 54. Gear set; 55. Threaded rod; 56. Nut seat; 57. Clamp seat; 58. Indicator light; 6. Anti-collision mechanism; 61. Sleeve seat; 62. Outer gear ring; 63. Tooth disc; 64. Auger rod; 65. Metal block group; 66. Inner rod; 67. Elastic ladder block; 7. Sampling device; 71. Tube; 72. Cone head piece; 73. Connecting rod; 74. Electromagnet block; 75. Reset spring; 76. Switch. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0027] As shown in Figures 1, 2, 3, 4, 5, 6 and 7, a soil water content detection device includes a workbench 1 and an iron sampling head 4. An adjustable telescopic rod 2 is fixedly mounted on the top of the workbench 1, and a machine compartment 3 is mounted on the top of the adjustable telescopic rod 2. A drive assembly 5 is housed at the top of the workbench 1 and inside the machine compartment 3. The drive assembly 5 is used to drive the iron sampling head 4 into the soil at different depths. An anti-collision mechanism 6 is also provided in the drive assembly 5 to protect the iron sampling head 4.

[0028] A slot 11 corresponding to the iron sampling head 4 is provided inside the workbench 1 . A sampling device 7 is provided inside the iron sampling head 4 . The sampling device 7 is used to sample soil at different depths.

[0029] In this embodiment, after determining the position of the soil to be tested, the workbench 1 is moved to the designated position, and the driving assembly 5 drives the iron sampling head 4 through the slot 11 until the iron sampling head 4 is pushed into the soil. During the soil pushing process, if stones or hard objects appear, the anti-collision mechanism 6 on the driving assembly 5 first contacts the stones or hard objects to prevent the iron sampling head 4 from being damaged by direct contact.

[0030] Among them, when the iron sampling head 4 is inserted into the soil and needs to be sampled and tested, the soil at different depths can be collected through the sampling device 7. After the collection is completed, the driving component 5 lifts the iron sampling head 4 on the workbench 1 to perform soil water detection.

[0031] As an embodiment, as shown in Figures 1, 2, 3, 4, 5 and 6, the driving assembly 5 includes a forward and reverse motor 51 installed on the top of the machine cabin 3, and the output end of the forward and reverse motor 51 is connected to the telescopic drill rod 52, the outer part of the telescopic drill rod 52 is sleeved with a sleeve rod 53, the bottom end of the sleeve rod 53 abuts against the outer protrusion of the telescopic drill rod 52, and the end of the telescopic drill rod 52 is detachably connected to the iron sampling head 4, and a threaded rod 55 is rotated on one side of the telescopic drill rod 52 inside the machine cabin 3, and a gear set 54 is provided between the threaded rod 55 and the telescopic drill rod 52, and a nut seat 56 is sleeved on the outer side of the threaded rod 55, and a clamp seat 57 is installed on one side of the nut seat 56, and the clamp seat 57 is sleeved on the outer side of the telescopic drill rod 52, the bottom of the clamp seat 57 abuts against the sleeve rod 53, and an indicator light 58 is fixedly installed on one end of the clamp seat 57.

[0032] Among them, a sliding hole for the movement of the indicator light 58 is opened on one side of the machine cabin 3, and a scale line is set on one side of the machine cabin 3.

[0033] In this embodiment, the forward and reverse motor 51 rotates forward to drive the telescopic drill rod 52 to rotate continuously. At the same time, the threaded rod 55 on one side of the telescopic drill rod 52 is engaged with each other by the external gear set 54. The threaded rod 55 drives the nut seat 56 to move downward. After the clamp seat 57 on one side of the nut seat 56 contacts the sleeve rod 53 downward, the sleeve rod 53 pushes the telescopic drill rod 52 to bulge, driving the telescopic drill rod 52 to rotate while maintaining a uniform speed to advance deep into the soil. The indicator light 58 on the side of the clamp seat 57 slides on the outside of the machine cabin 3, and the specific depth of penetration into the soil is observed more accurately.

[0034] As an embodiment, as shown in Figures 4, 5 and 6, the anti-collision mechanism 6 includes a sleeve 61 fixedly mounted on the outside of the sleeve rod 53, the outside of the telescopic drill rod 52 passes through the sleeve rod 53 and is installed with an outer gear ring 62, the outside of the outer gear ring 62 is engaged with a toothed disc 63, and the inside of the toothed disc 63 is installed with an auger rod 64, a corresponding metal block group 65 is provided between the top of the auger rod 64 and the inner wall of the sleeve 61, the metal block group 65 is connected to the indicator light 58 through an electrical signal, an inner rod 66 is inserted into the inside of the auger rod 64, the inner rod 66 is rotatably mounted in the sleeve 61, and a plurality of groups of elastic ladder blocks 67 are distributed in an annular shape on the outside of the inner rod 66.

[0035] Preferably, the auger rod 64 passes through the bottom of the sleeve 61 , and a concave hole for accommodating multiple sets of elastic ladder blocks 67 is opened on the top of the auger rod 64 .

[0036] Preferably, the thickness of the outer gear ring 62 is twice the thickness of the gear disc 63 .

[0037] In this embodiment, when the telescopic drill rod 52 drives the iron sampling head 4 to advance into the soil, the telescopic drill rod 52 drives the outer gear ring 62 to rotate, and the outer gear ring 62 engages and rotates with the toothed disc 63, driving the auger rod 64 to rotate. When stones or hard objects appear, the auger rod 64 in the sleeve 61 first contacts the stones to avoid direct contact with the iron sampling head 4. When the stones and hard objects are difficult to drill through, the auger rod 64 continues to contact the hard objects downward, and the auger rod 64 presses the elastic ladder block 67 inward until the metal block group 65 contacts, turning on the current of the indicator light 58, so that the indicator light 58 lights up, indicating that the soil detection sampling is blocked.

[0038] As an embodiment, as shown in Figures 4, 5, 6 and 7, the sampling device 7 includes a sampling tube 71, the bottom end of the sampling tube 71 is movably connected to multiple groups of cone head pieces 72, the inner sides of the multiple groups of cone head pieces 72 are movably connected to connecting rods 73, the top ends of the multiple groups of connecting rods 73 are hinged with electromagnet blocks 74, the electromagnet block 74 is sleeved on the outside of the telescopic drill rod 52, and a return spring 75 is installed on the top of the electromagnet block 74, a switch 76 is installed on the outside of the machine cabin 3, and the switch 76 and the electromagnet block 74 are connected by electrical signals.

[0039] Preferably, the iron sampling head 4 is composed of a sampling tube 71 and a plurality of cone head pieces 72 , and the magnetic field poles generated by the top of the electromagnet block 74 are used to attract the sampling tube 71 .

[0040] Among them, a slide plate 12 is slidably installed inside the slot 11 opened on the workbench 1, and a detection platform 13 is installed on the top of the slide plate 12. After the collection is completed, the slide plate 12 drives the detection platform 13 to correspond to the iron sampling head 4 up and down, and then the instrument is used to perform soil and water detection.

[0041] In this embodiment, when the iron sampling head 4 reaches the designated soil position and needs to be sampled and tested, the switch 76 is disconnected, the current of the electromagnet block 74 is cut off, and the magnetic field poles of the electromagnet block 74 disappear. The return spring 75 drives the connecting rod 73 downward to squeeze the cone head piece 72, so that multiple groups of cone head pieces 72 are unfolded to expose space. When the telescopic drill rod 52 continues to move downward, the space where the cone head pieces 72 are unfolded is used to sample the soil. Then the switch 76 is turned on to move the magnetic field poles of the electromagnet block 74 toward the sampling tube 71, ensuring that soil at different depths is sampled without mixing in soil samples from other depths, and the detection data is more accurate.

[0042] Working principle: When in use, after determining the position of the soil to be tested, the workbench 1 is moved to the designated position, and the iron sampling head 4 is driven to pass through the slot 11 by the driving assembly 5. The forward and reverse motor 51 is used to rotate the telescopic drill rod 52 continuously. At the same time, the threaded rod 55 on one side of the telescopic drill rod 52 is engaged with each other by the external gear set 54. The threaded rod 55 drives the nut seat 56 to move downward. After the clamp seat 57 on one side of the nut seat 56 contacts the sleeve rod 53 downward, the sleeve rod 53 pushes the telescopic drill rod 52 to bulge, and drives the telescopic drill rod 52 to rotate while advancing downward into the soil. The indicator light 58 on the side of the clamp seat 57 slides on the outside of the machine cabin 3 to observe the specific depth of penetration into the soil until the iron sampling head 4 is pushed into the soil.

[0043] During the process of the telescopic drill rod 52 driving the iron sampling head 4 to advance into the soil, the telescopic drill rod 52 drives the outer gear ring 62 to rotate, and the outer gear ring 62 engages and rotates with the toothed disc 63, driving the auger rod 64 to rotate. When stones or hard objects appear, the auger rod 64 in the sleeve 61 first contacts the stones to avoid direct contact with the iron sampling head 4. When the stones and hard objects are difficult to drill through, the auger rod 64 continues to contact the hard objects downward, pressing the elastic ladder block 67 inward until the metal block group 65 contacts, turning on the current of the indicator light 58, making the indicator light 58 light up, indicating that the soil detection sampling is blocked, and the soil detection is canceled in time;

[0044] When the iron sampling head 4 reaches the designated soil position and needs to be sampled and tested, after disconnecting the switch 76, the electromagnet block 74 is disconnected from the current, so that the magnetic field poles of the electromagnet block 74 disappear, and the return spring 75 drives the connecting rod 73 downward to squeeze the cone head piece 72, so that multiple groups of cone head pieces 72 are unfolded to expose space. When the telescopic drill rod 52 continues to move downward, the space where the cone head pieces 72 are unfolded is used to sample the soil, and then the switch 76 is turned on to move the magnetic field poles of the electromagnet block 74 toward the sampling tube 71, ensuring that soil at different depths is sampled and soil samples at other depths are not mixed in, so that the detection data is more accurate. After the collection is completed, the driving component 5 lifts the iron sampling head 4 on the workbench 1 for detection.

[0045] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0046] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A soil water content detection device, comprising a workbench (1) and an iron sampling head (4), wherein an adjustable telescopic rod (2) is fixedly mounted on the top of the workbench (1), and a machine compartment (3) is mounted on the top of the adjustable telescopic rod (2), characterized in that: A driving assembly (5) is accommodated at the top of the workbench (1) and inside the cabin (3). The driving assembly (5) is used to drive the iron sampling head (4) to advance into the soil at different depths. An anti-collision mechanism (6) is also provided inside the driving assembly (5). The anti-collision mechanism (6) is used to protect the iron sampling head (4); A slot (11) corresponding to the iron sampling head (4) is provided inside the workbench (1), and a sampling device (7) is provided inside the iron sampling head (4). The sampling device (7) is used to sample soil at different depths.

2. A soil water content detection device according to claim 1, characterized in that: The driving assembly (5) comprises a forward and reverse motor (51) mounted on the top of the machine cabin (3); the output end of the forward and reverse motor (51) is connected to a telescopic drill rod (52); a sleeve rod (53) is sleeved on the outside of the telescopic drill rod (52); the bottom end of the sleeve rod (53) abuts against an external protrusion of the telescopic drill rod (52); the end of the telescopic drill rod (52) is detachably connected to an iron sampling head (4); a threaded rod (55) is rotatably provided on one side of the telescopic drill rod (52) inside the machine cabin (3); a gear set (54) is provided between the threaded rod (55) and the telescopic drill rod (52); a nut seat (56) is sleeved on the outside of the threaded rod (55); a clamp seat (57) is mounted on one side of the nut seat (56); the clamp seat (57) is sleeved on the outside of the telescopic drill rod (52); and an indicator light (58) is fixedly mounted on one end of the clamp seat (57).

3. A soil water content detection device according to claim 2, characterized in that: A sliding hole for moving the indicator light (58) is provided on one side of the machine cabin (3), and a scale line is provided on one side of the machine cabin (3).

4. The soil water content detection device according to claim 2, characterized in that: The anti-collision mechanism (6) comprises a sleeve seat (61) fixedly mounted on the outside of the sleeve rod (53); the outside of the telescopic drill rod (52) penetrates through the sleeve rod (53) and is mounted with an outer gear ring (62); the outside of the outer gear ring (62) is meshed with a toothed disc (63); the inside of the toothed disc (63) is mounted with a spiral drill rod (64); a corresponding metal block group (65) is arranged between the top of the spiral drill rod (64) and the inner wall of the sleeve seat (61); the metal block group (65) is connected to the indicator light (58) via an electrical signal; the inside of the spiral drill rod (64) is plugged with an inner rod (66); the inner rod (66) is rotatably mounted in the sleeve seat (61); and the outer part of the inner rod (66) is annularly distributed with a plurality of groups of elastic ladder blocks (67).

5. The soil water content detection device according to claim 4, characterized in that: The auger rod (64) passes through the bottom of the sleeve (61), and a concave hole for accommodating a plurality of sets of elastic ladder blocks (67) is formed on the top of the auger rod (64).

6. The soil water content detection device according to claim 4, characterized in that: The thickness of the outer gear ring (62) is twice the thickness of the gear disc (63).

7. The soil water content detection device according to claim 1, characterized in that: The sampling device (7) comprises a sampling tube (71), the bottom end of the sampling tube (71) is movably connected to a plurality of groups of cone head pieces (72), the inner sides of the plurality of groups of cone head pieces (72) are movably connected to connecting rods (73), the top ends of the plurality of groups of connecting rods (73) are hinged with electromagnet blocks (74), the electromagnet blocks (74) are sleeved on the outside of the telescopic drill rod (52), and a return spring (75) is installed on the top of the electromagnet blocks (74), and a switch (76) is installed on the outside of the machine chamber (3), and the switch (76) is connected to the electromagnet block (74) via an electrical signal.

8. The soil water content detection device according to claim 7, characterized in that: The iron sampling head (4) is composed of a sampling tube (71) and a plurality of groups of cone head pieces (72), and the magnetic field poles generated at the top of the electromagnet block (74) are used to adsorb the sampling tube (71).

9. The soil water content detection device according to claim 1, characterized in that: A slide plate (12) is slidably mounted inside the slot (11) formed on the workbench (1), and a detection platform (13) is mounted on the top of the slide plate (12).

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