Soil texture detection equipment for building construction

Abstract

The invention relates to the technical field of soil texture detection, in particular to soil texture detection equipment for building construction, which comprises a bottom plate, a through hole is formed in the middle position of the top end of the bottom plate in a penetrating manner, multiple groups of ground nails are mounted at the bottom end of the bottom plate, a fixed column is fixedly mounted at the through hole position of the top end of the bottom plate, and a threaded drill rod is in threaded connection with the interior of the fixed column. A three-way connector is fixedly installed at the top end of the threaded drill rod, two sets of transverse rods are symmetrically installed on the outer side wall of the three-way connector, and handles are installed at the ends, away from the three-way connector, of the two sets of transverse rods. According to the invention, the probe can be rapidly inserted into the soil to complete detection without destroying the original structure and properties of the soil, so that the soil detection efficiency and the soil detection accuracy are improved, in addition, different joints can be replaced for the probe according to the specific condition of the to-be-detected soil, and the detection accuracy is improved. Therefore, the application range of the soil texture detection equipment is widened, and the soil texture detection efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of soil quality detection, and in particular to soil quality detection equipment for building construction. Background Art

[0002] Soil quality testing for construction is an important part of construction engineering quality testing. It mainly focuses on the physical, mechanical properties and chemical composition of the foundation and foundation soil layer. Soil quality testing for construction is of great significance to ensure the quality and safety of the project. Through soil quality testing, problems with the foundation soil, such as insufficient bearing capacity and poor stability, can be discovered in a timely manner, so that corresponding engineering measures can be taken to deal with them and avoid accidents such as foundation settlement and instability. At the same time, soil quality testing also provides a scientific basis for engineering design and construction, which helps to optimize the design and construction plans and improve the economic and social benefits of the project.

[0003] After searching, the patent application document with patent publication number CN110243625A discloses a soil quality testing machine for engineering inspection. The soil quality testing machine can first loosen the soil at a certain depth, then quickly sample the soil, and use the collected soil for soil quality testing on the way to the next sampling location, thereby avoiding the problem that when sampling harder soil or heavier soil, the soil sampler is worn or the soil sampler is difficult to be separated and taken out due to the viscosity of the soil. However, when the soil quality testing machine is used, it can only loosen the soil at a certain depth and cannot loosen the soil at a deeper level, that is, it cannot sample and test the soil at a deeper level, thereby reducing the accuracy of soil quality testing. Moreover, when the soil quality testing machine samples the soil, it samples the loosened soil, and the original structure and properties of the loosened soil are completely destroyed, thereby further reducing the accuracy of soil quality testing and having poor practicality. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the soil quality testing machine in the prior art cannot sample and test the soil at a deeper level and that the accuracy of soil quality testing is easily reduced when sampling and testing the loosened soil, and to propose a soil quality testing device for construction.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A soil quality detection device for construction, comprising a base plate, a through hole is provided at the middle position of the top of the base plate, and a plurality of ground nails are installed at the bottom end of the base plate, a fixing column is fixedly installed at the through hole position of the top of the base plate, a threaded drill rod is threadedly connected inside the fixing column, a tee joint is fixedly installed at the top of the threaded drill rod, two groups of cross bars are symmetrically installed on the outer side wall of the tee joint, and handles are installed at the ends of the two groups of cross bars away from the tee joint, and further comprising:

[0007] The detection mechanism includes a first fixing plate and a joint replacement assembly, wherein the first fixing plate is fixedly mounted on the inner wall of the threaded drill rod, and three groups of hydraulic supports are mounted on the bottom end of the first fixing plate, the three groups of hydraulic supports are arranged in an inclined and staggered manner, and the output ends of the three groups of hydraulic supports are all mounted with detection needles, the joint replacement assembly is arranged on the inner wall of the threaded drill rod, and is used to install different joints at the bottom end of the detection needle according to the detection requirements, and three groups of through holes corresponding to the three groups of detection needles are penetrated on the inner wall of the threaded drill rod;

[0008] An ultrasonic auxiliary mechanism, which is arranged on the threaded drill rod and is used to assist the soil testing equipment in finding a suitable plot of land and assist the drilling of the threaded drill rod and the insertion and testing of the detection needle;

[0009] A data transmission and display mechanism, which is arranged on the three-way connector and is used to transmit and display the data detected by the detection needle;

[0010] The moving mechanism is arranged on the bottom plate and is used to enable the entire device to move.

[0011] Preferably, the joint replacement assembly includes an oil-absorbing rubber and a three-way telescopic table, the oil-absorbing rubber consists of an upper and lower layer, and the oil-absorbing rubber contains plant extract oil, the lower layer of the oil-absorbing rubber is fixedly mounted on the inner wall of the threaded drill rod, the upper layer of the oil-absorbing rubber is rotatably connected to the lower layer of the oil-absorbing rubber, and the upper layer of the oil-absorbing rubber is penetrated by six groups of through holes, the six groups of through holes are all inclined, three groups of the through holes are inserted with streamlined joints, the other three groups of the through holes are inserted with triangular thorn-shaped joints, and the three The streamlined joints and the three groups of triangular thorn-shaped joints are arranged alternately with each other, and the tops of the three groups of streamlined joints and the three groups of triangular thorn-shaped joints are commonly provided with connecting components for connecting the streamlined joints or the triangular thorn-shaped joints with the detection needles. The lower layer of the oil-absorbing rubber is penetrated by three groups of through holes corresponding to the three groups of through holes on the three groups of detection needles and the threaded drill rods. The three-way telescopic platform is fixedly installed on the inner wall of the threaded drill rod, and the three-way telescopic platform and the oil-absorbing rubber are commonly provided with a driving component for driving the upper layer of the oil-absorbing rubber to rotate.

[0012] Preferably, the connecting component includes six groups of adapter blocks, three groups of the adapter blocks are respectively fixedly installed on the top ends of three groups of streamlined joints, and the other three groups of the adapter blocks are respectively fixedly installed on the top ends of three groups of triangular thorn-shaped joints, the top ends of the six groups of adapter blocks are all semi-cylindrical, and the semi-cylindrical parts of the top ends of the six groups of adapter blocks are all installed with tenons, the bottom ends of the three groups of detection needles are all semi-cylindrical, and the semi-cylindrical parts of the bottom ends of the three groups of detection needles are all provided with mortises matching with the tenons.

[0013] Preferably, water guide grooves are provided on the outer side walls of the three groups of detection needles and the outer side walls of the six groups of adapter blocks, and the positions of the water guide grooves on the detection needles correspond to the positions of the water guide grooves on the adapter blocks.

[0014] Preferably, the driving component includes a motor, which is fixedly mounted at the bottom end of the three-way telescopic platform, and a rotating rod is fixedly connected to the output end of the motor, and the end of the rotating rod away from the motor sequentially penetrates the three-way telescopic platform and the lower layer of the oil-absorbing rubber, and is fixedly connected to the upper layer of the oil-absorbing rubber.

[0015] Preferably, the ultrasonic auxiliary mechanism includes three groups of ultrasonic vibration rods and three groups of fixing grooves, the three groups of fixing grooves are evenly opened on the outer wall of the threaded drill rod, and the three groups of fixing grooves are respectively located at the middle position between the three groups of through holes on the threaded drill rod, the three groups of ultrasonic vibration rods are respectively rotatably connected in the three groups of fixing grooves, the three groups of output ends on the three-way telescopic table are all installed with telescopic rods, the ends of the three groups of telescopic rods away from the three-way telescopic table all penetrate the inner wall of the threaded drill rod, and are respectively rotatably connected to the three groups of ultrasonic vibration rods, and multiple groups of frustum vibration sources are evenly installed on the outer walls of the three groups of ultrasonic vibration rods, and the outer side walls of the multiple groups of frustum vibration sources are all arranged in an inclined shape.

[0016] Preferably, the data transmission and display mechanism includes a wire and a digital display screen, the digital display screen is installed at the top of the three-way connector, one end of the wire is connected to the digital display screen on the three-way connector, and the other end of the wire passes through the first fixed plate and is electrically connected to the detection pin on the hydraulic support.

[0017] Preferably, the moving mechanism includes a limit plate and four groups of first uprights, the limit plate is slidably connected to the outer wall of the fixed column, and the bottom end of the limit plate is evenly fixedly connected with four groups of connecting rods, the bottom ends of the four groups of connecting rods are movably connected with rollers, the top of the bottom plate is penetrated by openings for the four groups of connecting rods and four groups of rollers to pass through, the top of the limit plate is fixedly connected with four groups of second uprights, and the limit plate is fixedly connected with a driving ring through the four groups of second uprights, the driving ring is threadedly connected to the threaded drill rod, the four groups of first uprights are evenly fixedly installed on the top of the bottom plate, and the tops of the four groups of first uprights penetrate the bottom wall of the driving ring and are commonly fixedly connected to the limit ring.

[0018] Preferably, a fixing rod is fixedly connected at the center position of the bottom end of the first fixing plate, the bottom end of the fixing rod is fixedly connected to the second fixing plate, and the output ends of the three groups of hydraulic supports pass through the top wall of the second fixing plate and are fixedly connected to the second fixing plate.

[0019] Preferably, pressure detectors are installed on the three groups of detection needles.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] 1. The present invention can perform soil quality detection on soil layers of different depths by controlling the drilling depth of the threaded drill rod through the mutual cooperation of the detection mechanism and the ultrasonic auxiliary mechanism, and can enable the detection needle to be quickly and smoothly inserted into the soil to complete the detection without destroying the original structure and properties of the soil, thereby improving the soil quality detection efficiency and soil quality detection accuracy. In addition, the setting of the joint replacement component in the detection mechanism can replace different joints for the detection needle according to the specific conditions of the soil to be detected, thereby assisting the detection needle to better insert into soils of different soil types to complete the detection, thereby improving the application scope of the soil quality detection equipment and further improving the soil quality detection efficiency.

[0022] 2. The present invention can further fix the detection needle by setting the oil-absorbing rubber in the joint replacement assembly. At the same time, under the action of its own elasticity, it can play a buffering role on the detection needle, thereby increasing the service life of the detection needle. The setting of the oil-absorbing rubber containing plant extract oil can lubricate and rust-proof the detection needle, assisting the detection needle to better perform the insertion process while further increasing the service life of the detection needle. In addition, based on the characteristics of plant extract oil that is easily decomposed in the soil and will not pollute the soil, the plant extract oil will not affect the detection of the detection needle when assisting the insertion of the detection needle, and the oil-absorbing rubber can also remove the soil adhesion on the surface of the detection needle when the detection needle is retracted, thereby ensuring the accuracy of soil detection.

[0023] 3. The present invention can assist the detection needle to better insert into soils of different soil types through the arrangement of the triangular thorn joint and the streamlined joint in the joint exchange assembly. The streamlined joint can assist the detection needle to perform better detection work in silt, thereby ensuring the accuracy of soil quality detection of silt. The triangular thorn joint can assist the detection needle to more smoothly insert into sand or clay, thereby improving the efficiency of soil quality detection of sand or clay. When soil quality detection is required for soil with relatively high moisture content, the arrangement of the water guide trough can reduce the influence of moisture on the insertion process of the detection needle, thereby ensuring the accuracy of soil quality detection of soil with relatively high moisture content.

[0024] 4. The present invention, through the setting of an ultrasonic auxiliary mechanism, can use the ultrasonic vibrator before opening to assist the soil detection equipment to find a suitable plot for soil drilling and soil detection operations, and after finding a plot suitable for soil detection, it can assist the soil drilling process of the threaded drill rod, making the threaded drill rod drilling process more labor-saving and in-depth. In addition, when the ultrasonic vibrator assists the soil drilling process of the threaded drill rod, the disturbance to the surrounding soil is small, and the original structure and properties of the soil will not be destroyed, thereby improving the drilling efficiency while also ensuring the accuracy of subsequent soil detection.

[0025] 5. The present invention, through the setting of the ultrasonic auxiliary mechanism, utilizes the opened ultrasonic vibrating rod to make it easier to insert the detection needle into the soil, and can make the contact between the soil particles and the detection needle closer, which is beneficial to the actual detection effect of the soil. In addition, the two groups of ultrasonic vibrating rods form an ultrasonic reinforcement area to generate a thrust, which can further promote and guide the insertion of the detection needle into the soil, thereby further improving the efficiency of soil detection.

[0026] 6. The present invention cooperates with the oil-absorbing rubber and the ultrasonic auxiliary mechanism in the joint replacement assembly, and utilizes the ultrasonic cavitation effect, mechanical effect and thermal effect generated after the ultrasonic auxiliary mechanism is activated to promote the penetration and absorption of the plant extract oil in the oil-absorbing rubber on the surface of the detection needle, thereby forming a more stable protective film on the surface of the detection needle, thereby further improving the service life of the detection needle. In addition, by utilizing the data transmission display mechanism and the setting of the pressure detector on the detection needle, an alarm can be issued when the pressure on the joint on the detection needle reaches a certain threshold, reminding the staff to protect the joint by replacing a different joint or stopping the operation, thereby improving the service life of the joint on the detection needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall axial structure of a soil quality testing device for construction proposed by the present invention.

[0028] Figure 2 The present invention is a schematic diagram of the upper part of the side section structure of a soil quality testing device for construction.

[0029] Figure 3 This is a schematic diagram of the structure of a spiral drill rod and a detection needle of a soil quality detection device for construction proposed by the present invention.

[0030] Figure 4 The present invention is a schematic diagram of the lower half of the side section structure of a soil quality testing device for construction.

[0031] Figure 5This is a schematic diagram of the internal structure of a spiral drill rod of a soil quality testing device for construction proposed by the present invention.

[0032] Figure 6 This is a schematic diagram of the structure of a detection needle and a pressure detector of soil quality detection equipment for construction proposed by the present invention.

[0033] Figure 7 The present invention is a schematic diagram of the tenon and mortise structure of a soil quality testing device for construction.

[0034] In the figure: 1 tee joint, 2 cross bar, 3 handle, 4 threaded drill rod, 5 limit ring, 6 first vertical pole, 7 drive ring, 8 second vertical pole, 9 limit plate, 10 connecting rod, 11 roller, 12 fixed column, 13 bottom plate, 14 ground nail, 15 wire, 16 first fixed plate, 17 fixed rod, 18 second fixed plate, 19 hydraulic support, 20 detection needle, 21 pressure detector, 22 water guide groove, 23 mortise, 24 adapter block, 25 tenon, 26 streamline joint, 27 triangular thorn joint, 28 oil absorption rubber, 29 rotating rod, 30 three-way telescopic table, 31 motor, 32 telescopic rod, 33 ultrasonic vibration rod, 34 round table vibration source, 35 fixing groove. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0036] Reference Figure 1 to Figure 2 A soil quality detection device for construction, comprising a bottom plate 13, a through hole is provided at the middle position of the top of the bottom plate 13, and a plurality of ground nails 14 are installed at the bottom end of the bottom plate 13, a fixing column 12 is fixedly installed at the through hole position at the top of the bottom plate 13, a threaded drill rod 4 is connected to the internal thread of the fixing column 12, a tee joint 1 is fixedly installed at the top of the threaded drill rod 4, two groups of cross bars 2 are symmetrically installed on the outer wall of the tee joint 1, and a handle 3 is installed at one end of the two groups of cross bars 2 away from the tee joint 1, and a moving mechanism is provided on the bottom plate 13 for moving the entire device, and the moving mechanism includes a limit plate 9 and four groups of first vertical poles 6, and a limit plate 9 is provided on the bottom plate 13. The positioning plate 9 is slidably connected to the outer wall of the fixed column 12, and the bottom end of the limiting plate 9 is evenly fixedly connected with four groups of connecting rods 10, and the bottom ends of the four groups of connecting rods 10 are movably connected with rollers 11. The top of the bottom plate 13 is penetrated by openings for the four groups of connecting rods 10 and the four groups of rollers 11 to pass through. The top of the limiting plate 9 is fixedly connected with four groups of second vertical rods 8, and the limiting plate 9 is fixedly connected with the driving ring 7 through the four groups of second vertical rods 8. The driving ring 7 is threadedly connected to the threaded drill rod 4. The four groups of first vertical rods 6 are evenly fixedly installed on the top of the bottom plate 13, and the top ends of the four groups of first vertical rods 6 all penetrate the bottom wall of the driving ring 7 and are fixedly connected with the limiting ring 5 together.

[0037] When the staff uses the roller 11 to move the soil testing equipment to the area where soil testing is required, they step on both sides of the bottom plate 13 with their feet, hold the handle 3 and rotate the cross bar 2 to drive the three-way joint 1 with a digital display screen installed on the top to rotate so that the threaded drill rod 4 starts to drill down, thereby starting the soil drilling operation. At this time, under the action of the threads on the threaded drill rod 4, the driving ring 7 starts to move up, thereby driving the limit plate 9 to move up, and then driving the roller 11 at the bottom of the limit plate 9 to move up and leave the ground, so as to avoid the roller 11 affecting the drilling operation. The setting of the limit ring 5 can limit the upward movement height of the driving ring 7. This avoids the driving ring 7 from continuously moving up to the position of the three-way joint 1 and the cross bar 2 during the drilling operation, which affects the operator's operation of rotating the cross bar 2, thereby ensuring the smooth progress of the entire drilling process. When the roller 11 moves up to the opening on the base plate 13, the ground nail 14 at the bottom end of the base plate 13 is completely inserted into the soil, and the setting of the ground nail 14 can fix the soil detection equipment, avoiding shaking of the equipment during the drilling or detection process, thereby reducing damage to the threaded drill rod 4 and the detection needle 20 caused by the shaking of the equipment, thereby avoiding affecting the detection effect and increasing maintenance costs.

[0038] Reference Figures 1 to 7 The threaded drill rod 4 is provided with a detection mechanism for soil detection. The detection mechanism includes a first fixing plate 16 and a joint replacement assembly. The first fixing plate 16 is fixedly mounted on the inner wall of the threaded drill rod 4, and three groups of hydraulic supports 19 are installed at the bottom end of the first fixing plate 16. The three groups of hydraulic supports 19 are arranged in an inclined and staggered manner with each other, and the output ends of the three groups of hydraulic supports 19 are all installed with detection needles 20. The joint replacement assembly is arranged on the inner wall of the threaded drill rod 4 and is used to install different joints at the bottom end of the detection needle 20 according to the detection requirements. The inner wall of the threaded drill rod 4 is penetrated by three groups of through holes corresponding to the three groups of detection needles 20. Hole, a data transmission and display mechanism is installed on the three-way joint 1, which is used to transmit and display the data detected by the detection needle 20. A fixing rod 17 is fixedly connected to the center position of the bottom end of the first fixing plate 16, and a second fixing plate 18 is fixedly connected to the bottom end of the fixing rod 17. The output ends of the three groups of hydraulic supports 19 pass through the top wall of the second fixing plate 18 and are fixedly connected to the second fixing plate 18. The arrangement of the second fixing plate 18 can make the fixation of the hydraulic support 19 more stable, and prevent the hydraulic support 19 and the detection needle 20 on the hydraulic support 19 from being damaged due to shaking during the drilling process and the insertion detection process.

[0039] The joint replacement assembly includes an oil-absorbing rubber 28 and a three-way telescopic platform 30. The oil-absorbing rubber 28 is composed of an upper and lower layer, and the oil-absorbing rubber 28 contains plant extract oil. The lower layer of the oil-absorbing rubber 28 is fixedly installed on the inner wall of the threaded drill rod 4, and the upper layer of the oil-absorbing rubber 28 is rotatably connected to the lower layer of the oil-absorbing rubber 28. The upper layer of the oil-absorbing rubber 28 is penetrated by six groups of through holes, and the six groups of through holes are all inclined. Three groups of through holes are inserted with streamlined joints 26, and the other three groups of through holes are inserted with triangular thorn-shaped joints 27. The three groups of streamlined joints 26 and the three groups of through holes are inserted into the three-dimensional thorn-shaped joints 27. The three groups of triangular thorn-shaped joints 27 are arranged alternately with each other, and the three groups of streamlined joints 26 and the three groups of triangular thorn-shaped joints 27 are commonly provided with connecting parts at the top, which are used to connect the streamlined joints 26 or the triangular thorn-shaped joints 27 with the detection needle 20. The lower part of the oil-absorbing rubber 28 is penetrated by three groups of through holes corresponding to the three groups of through holes on the three groups of detection needles 20 and the threaded drill rod 4. The three-way telescopic platform 30 is fixedly installed on the inner wall of the threaded drill rod 4, and the three-way telescopic platform 30 and the oil-absorbing rubber 28 are commonly provided with a driving component for driving the upper part of the oil-absorbing rubber 28 to rotate.

[0040] The setting of the oil-absorbing rubber 28 can further fix the detection needle 20. At the same time, since the rubber has a certain elasticity, it can play a buffering role, thereby reducing the impact force of the detection needle 20 encountering stones and other materials when it is inserted into the soil layer, preventing the detection needle 20 from bending, thereby increasing the service life of the detection needle 20. In addition, since the oil-absorbing rubber 28 contains plant extract oil, when the detection needle 20 is inserted into and detected in the soil, the plant extract oil in the oil-absorbing rubber 28 can lubricate the detection needle 20 and also form an oil film on the surface of the detection needle 20, thereby It can prevent the detection needle 20 from rusting. In addition, based on the characteristics that plant extract oil is easily decomposed in the soil and will not pollute the soil, the plant extract oil can better assist the detection needle 20 to insert and detect the soil without affecting the detection of the detection needle 20. When the detection needle 20 is retracted, the oil-absorbing rubber 28 can also remove the soil adhesion on its surface, thereby being able to clean the surface of the detection needle 20 to a certain extent, thereby avoiding the soil on the surface of the detection needle 20 affecting the detection data of the detection needle 20 during the next use, thereby ensuring the accuracy of soil detection.

[0041] Reference Figures 4 to 7The connecting parts include six groups of adapter blocks 24, three groups of adapter blocks 24 are respectively fixedly mounted on the top of three groups of streamline joints 26, and the other three groups of adapter blocks 24 are respectively fixedly mounted on the top of three groups of triangular thorn joints 27. The tops of the six groups of adapter blocks 24 are all semi-cylindrical, and tenons 25 are installed at the semi-cylindrical parts of the tops of the six groups of adapter blocks 24. The bottoms of the three groups of detection needles 20 are all semi-cylindrical, and the semi-cylindrical parts of the bottoms of the three groups of detection needles 20 are all provided with mortises 23 that match the tenons 25. The outer walls of the three groups of detection needles 20 and the outer walls of the six groups of adapter blocks 24 are all provided with water guide grooves 22. The position of the water guide grooves 22 on the detection needles 20 corresponds to the position of the water guide grooves 22 on the adapter blocks 24. The driving component includes a motor 31. The motor 31 is fixedly mounted at the bottom end of the three-way telescopic platform 30, and the output end of the motor 31 is fixedly connected to a rotating rod 29. The end of the rotating rod 29 away from the motor 31 sequentially penetrates the three-way telescopic platform 30 and the lower layer of the oil-absorbing rubber 28, and is connected to the upper surface of the oil-absorbing rubber 28. The three groups of detection needles 20 are connected with the three groups of three-pronged thorn-shaped joints 27 or the three groups of streamlined joints 26, and then the detection needles 20 continue to extend and pass through the lower part of the oil-absorbing rubber 28 and are inserted into the soil layer. The three detection needles 20 are inserted into the soil obliquely, so as to better detect the soil conditions of the same soil layer, which is conducive to determining the properties of the soil in the corresponding soil layer and reducing detection errors, thereby improving the accuracy of soil detection.

[0042] When the three groups of detection needles 20 encounter different soil types during the insertion process, different joints (such as triangular thorn joints 27 or streamlined joints 26) can be replaced according to the specific situation, so as to assist the detection needles 20 to better insert into the soil of different soil types. When the joints need to be replaced, the hydraulic support 19 is first started to recycle the detection needle 20. When the lower end of the detection needle 20 is completely separated from the oil-absorbing rubber 28, the operation of the hydraulic support 19 is stopped, and then the upper part of the oil-absorbing rubber 28 is reversely rotated by the motor 31, so that the tenon 25 on the adapter block 24 is separated from the mortise 23 on the detection needle 20, that is, the initially connected joint is separated from the detection needle 20, and then the hydraulic support 19 is continued. The detection needle 20 is retracted, and the upper part of the oil-absorbing rubber 28 is rotated at the same time to make the other joint located at the specified position, and then the detection needle 20 is extended so that the mortise 23 on the detection needle 20 is aligned with the tenon 25 on the adapter block 24 on the joint, and the detection needle 20 is combined with the adapter block 24 on the joint again by rotating the upper part of the oil-absorbing rubber 28, and finally the joint on the detection needle 20 is replaced, thereby achieving the effect of replacing different joints of the detection needle 20 according to the specific conditions of the soil, assisting the detection needle 20 to better insert into soils of different soil types, and detecting the soil, thereby improving the application range of the soil detection equipment and improving the soil detection efficiency.

[0043] The arrangement of three groups of triangular thorn joints 27 and three groups of streamline joints 26 can assist the three groups of detection needles 20 to better insert into soils of different soil types. The streamline joints 26 can assist the detection needles 20 to better detect in silt. Silt is relatively fine and not very sticky but easily disturbed. The streamline joints 26 can reduce the friction of the detection needles 20 during the insertion process, and prevent the detection needles 20 from excessively disturbing the silt during the insertion process, so as to ensure that the soil structure of the silt will not be greatly damaged after the silt is inserted, thereby ensuring the accuracy of soil quality detection of the silt. The triangular thorn joints 27 are sharper and can more easily penetrate the pores between sand particles to reduce the contact area with the sand, thereby reducing Low penetration resistance can assist the detection needle 20 to be inserted into the sand more smoothly. In addition, when encountering clay, the triangular thorn-shaped joint 27 can cut the clay, thereby reducing the adhesion effect of the clay, thereby enhancing the insertion ability of the detection needle 20. At the same time, when it is necessary to detect the soil quality of soil with relatively high moisture content, the water guide groove 22 on the side of the detection needle 20 and the adapter block 24 can be used to guide the discharge of water in the soil, reducing the influence of moisture on the insertion process of the detection needle 20 and the adapter block 24, so that the soil quality of different soils can be better detected, thereby improving the scope of application of the soil quality detection equipment, thereby ensuring the accuracy of soil quality detection while also improving the efficiency of soil quality detection.

[0044] Reference Figure 1 , Figure 4 and Figure 6The data transmission and display mechanism includes a wire 15 and a digital display screen. The digital display screen is installed at the top of the three-way connector 1. One end of the wire 15 is connected to the digital display screen on the three-way connector 1, and the other end of the wire 15 passes through the first fixed plate 16 and is electrically connected to the detection needle 20 on the hydraulic support 19. After the detection needle 20 completes the soil detection, the electrical signal is transmitted through the wire 15 and displayed on the digital display screen on the three-way connector 1, which is convenient for recording and archiving data of different soil layers, and is conducive to the comprehensive selection of suitable construction areas. Pressure detectors 21 are installed on the three groups of detection needles 20. When the connector on the detection needle 20 encounters resistance in the soil, the pressure detector 21 on the detection needle 20 will be compressed, and the electrical signal is transmitted through the wire 15 and displayed on the digital display screen on the surface of the three-way connector 1. When the pressure reaches a certain threshold, an alarm will be issued. At this time, you can consider replacing a different connector or stopping the operation to protect the connector, reduce the damage it receives during the insertion process, thereby increasing the service life of the connector on the detection needle 20.

[0045] Reference Figures 1 to 6 An ultrasonic auxiliary mechanism is provided on the threaded drill rod 4 to assist the soil detection equipment in finding a suitable plot of land and assist in the drilling of the threaded drill rod 4 and the insertion detection of the detection needle 20. The ultrasonic auxiliary mechanism includes three groups of ultrasonic vibration rods 33 and three groups of fixed grooves 35. The three groups of fixed grooves 35 are evenly arranged on the outer wall of the threaded drill rod 4, and the three groups of fixed grooves 35 are respectively located at the middle position between the three groups of through holes on the threaded drill rod 4. The three groups of ultrasonic vibration rods 33 are respectively rotatably connected in the three groups of fixed grooves 35. The three groups of output ends on the three-way telescopic platform 30 are all installed with telescopic rods 32. The ends of the three groups of telescopic rods 32 away from the three-way telescopic platform 30 all penetrate the inner wall of the threaded drill rod 4 and are respectively rotatably connected with the three groups of ultrasonic vibration rods 33. A plurality of groups of truncated cone vibration sources 34 are evenly installed on the outer wall of the rod 33, and the outer side walls of the plurality of groups of truncated cone vibration sources 34 are all inclined. When the drill bit of the threaded drill rod 4 in the device is drilled into the soil, the ultrasonic vibration rod 33 retracted on the side of the threaded drill rod 4 is started, and the detection sound waves of a certain frequency are adjusted to be emitted into the soil through the truncated cone vibration source 34. The truncated cone structure can improve the directionality of the sound waves emitted into the soil, enhance the sound wave intensity in the unit soil, and make the sound waves propagate deeper underground. The underground situation is judged according to the reflection of the sound waves. If there are large hard stones distributed underground, the threaded drill rod 4 is rotated in the opposite direction, the roller 11 descends and lifts the device, and moves to other areas. The above process is repeated until a plot that is more suitable for soil testing is found.

[0046] After finding a plot of land suitable for soil testing, change the ultrasonic frequency and continue to rotate the threaded drill rod 4 downward. The high-frequency vibration generated by the ultrasonic vibration rod 33 and then transmitted to the truncated cone vibration source 34 will produce impact, friction and shear force on the soil, breaking and loosening the soil, thereby reducing the resistance encountered by the threaded drill rod 4 when drilling, making the drilling process more labor-saving and in-depth. In addition, the heat generated by the ultrasonic vibration rod 33 during the vibration process can evaporate the moisture in the soil or melt the ice or melt the ice in some sticky soils or those containing ice or frozen soil, thereby reducing the adhesion and strength of the soil, making the drilling process easier. In addition, since the energy of the ultrasonic vibration is mainly concentrated near the ultrasonic vibration rod 33 and the truncated cone vibration source 34, the disturbance to the surrounding soil is small, which helps to maintain the original structure and properties of the soil, provide more accurate data for subsequent soil analysis, and greatly improve the accuracy of detection.

[0047] When the threaded drill rod 4 drills down to the position of the soil layer to be detected, it stops rotating, and when the hydraulic support 19 is started to insert the detection needle 20 into the soil, the three-way telescopic platform 30 is started to extend the telescopic rod 32, thereby pushing the three groups of ultrasonic vibration rods 33 to expand outward. Since the three groups of fixing grooves 35 are respectively located at the middle positions between the three groups of through holes on the threaded drill rod 4, the three groups of ultrasonic vibration rods 33 are located at the middle positions between the three groups of detection needles 20, that is, each group of detection needles 20 is located at the middle position between two groups of ultrasonic vibration rods 33. When the frequencies and phases of the two groups of ultrasonic vibration rods 33 are consistent, the interference effect of the superposition of vibrations will cause the vibration waves generated by the two groups of ultrasonic vibration rods 33 to be located on their connecting plane, and the vibration waves of the vertical part at the middle position of the connecting plane will form a reinforcement area, thereby further making the soil particles at this position closer. The friction force is reduced, thereby loosening this part of the soil, causing the air and moisture in the soil to be discharged, reducing the pore pressure of the soil, and helping to reduce the soil's adsorption force on the detection needle 20, making it easier for the detection needle 20 located in the middle of the two groups of ultrasonic vibration rods 33 to be inserted into the soil. When the air and moisture in the soil are discharged, the contact between the soil particles and the detection needle 20 will be closer, which is beneficial to the actual detection effect of the detection needle 20 on the soil. In addition, since the outer wall of the truncated cone vibration source 34 is arranged in an inclined shape and the truncated cone vibration source 34 is densely arranged on the ultrasonic vibration rod 33, the two groups of ultrasonic vibration rods 33 form an ultrasonic reinforcement area that will generate a thrust. This thrust can further promote and guide the insertion of the detection needle 20 into the soil, thereby promoting the detection needle 20 to detect the soil quality faster, thereby effectively improving the soil quality detection efficiency.

[0048] In addition, due to the presence of the ultrasonic vibration rod 33 and the truncated cone vibration source 34, the ultrasonic cavitation effect, mechanical effect and thermal effect can promote the penetration and absorption of the plant extract oil in the oil-absorbing rubber 28 on the surface of the detection needle 20, thereby forming a more stable protective film on the surface of the detection needle 20, thereby further improving the service life of the detection needle 20.

[0049] In the present invention, the equipment is moved to the area where soil quality testing is required on the construction site through the rollers 11. The staff members step on both sides of the base plate 13, hold the handles 3 and rotate the cross bar 2 to drive the three-way joint 1 with a digital display screen installed on the top to rotate, and the threaded drill rod 4 on the lower side of the three-way joint 1 starts to drill, driving the driving ring 7 to move upward until it moves to the limit ring 5 connected to the base plate 13 through the first vertical rod 6. The limit plate 9 connected to the driving ring 7 through the second vertical rod 8 is simultaneously moved up to the specified position, and the roller 11 connected by the connecting rod 10 is completely retracted into the opening on the base plate 13. The ground nails 14 on the lower side of the base plate 13 are completely inserted into the soil, which plays a fixing role, avoiding shaking of the equipment during the drilling process or the detection process, thereby reducing the screw The threaded drill rod 4 and the detection needle 20 are damaged by the shaking of the equipment, thereby avoiding affecting the detection effect and increasing the maintenance cost. At this time, the drill head part of the threaded drill rod 4 is drilled into the soil, and the ultrasonic vibration rod 33 retracted on the side of the threaded drill rod 4 is started. The detection sound waves of a certain frequency are adjusted to be emitted into the ground through the truncated cone vibration source 34. The truncated cone structure can improve the directionality of the sound waves emitted into the soil, enhance the sound wave intensity in the unit soil, and make the sound waves propagate deeper underground. The underground situation is judged according to the reflection of the sound wave. If there are large hard stones distributed underground, the threaded drill rod 4 is rotated in the opposite direction, the roller 11 descends and lifts the equipment, and moves to other areas. The above process is repeated until a plot that is more suitable for soil detection is found.

[0050] After determining the area and finding a plot suitable for soil testing, change the ultrasonic frequency and continue to rotate the threaded drill rod 4 downward. The high-frequency vibration generated by the ultrasonic vibration rod 33 and then transmitted to the truncated cone vibration source 34 will produce impact, friction and shear force on the soil, breaking and loosening the soil, thereby reducing the resistance encountered by the threaded drill rod 4 when drilling, making the drilling process more labor-saving and in-depth. The heat generated by the ultrasonic vibration rod 33 during the vibration process can evaporate the moisture in the soil or melt the ice or melt the ice in some sticky soils or those containing ice or frozen soil, thereby reducing the adhesion and strength of the soil, making the drilling process easier. In addition, since the energy of the ultrasonic vibration is mainly concentrated near the ultrasonic vibration rod 33 and the truncated cone vibration source 34, the disturbance to the surrounding soil is small, which helps to maintain the original structure and properties of the soil, provide more accurate data for subsequent soil analysis, and greatly improve the accuracy of detection.

[0051] When the threaded drill rod 4 drills down to the position of the soil layer to be tested, it stops rotating and starts testing. The telescopic rod 32 in the three-way telescopic platform 30 extends, pushing the ultrasonic vibrator 33, one end of which is connected to the threaded drill rod 4, to expand outward at the other side. At the same time, the hydraulic support 19 fixed at both ends between the first fixed plate 16 and the second fixed plate 18 is started. The upper side of the first fixed plate 16 is connected to the wire 15, and the lower side of the first fixed plate 16 is connected to the second fixed plate 18 through the fixing rod 17, so that the fixing of the hydraulic support 19 is more stable, preventing the hydraulic support 19 and the detection needle 20 on the hydraulic support 19 from being damaged due to shaking during the drilling process and the insertion detection process. The detection needle 20 starts to extend from the hydraulic support 19. There is a mortise 23 on the inner side of the semi-cylindrical part at the top of the detection needle 20. When the detection needle 20 is extended to a certain position, the rotating rod 29 is rotated by turning on the motor 31. The rotation of the rotating rod 29 causes the upper part of the oil-absorbing rubber 28 to rotate until the mortise 23 at the semi-cylindrical part at the bottom of the three groups of detection needles 20 is connected with the tenon 25 of the upper semi-cylindrical part of three groups of adapter blocks 24 among the six groups of adapter blocks 24, that is, the three groups of detection needles 20 are connected with the three groups of triangular thorn-shaped joints 27 or the three groups of streamlined joints 26. Then the detection needle 20 continues to extend and passes through the lower part of the oil-absorbing rubber 28 and is inserted into the soil layer.

[0052] The existence of the oil-absorbing rubber 28 firstly further fixes the detection needle 20. At the same time, since the rubber has a certain elasticity, it can play a buffering role, reduce the impact force when encountering stones and other materials during the insertion process of the soil layer, and prevent the detection needle 20 from bending, thereby increasing the service life of the detection needle 20. Secondly, since the oil-absorbing rubber 28 contains plant extract oil, when the detection needle 20 is inserted into and detected in the soil, the plant extract oil in the oil-absorbing rubber 28 can lubricate the detection needle 20 and form an oil film on the surface of the detection needle 20, which can prevent the detection needle 20 from rusting. In addition, based on the fact that the plant extract oil is easily decomposed in the soil, The plant extract oil can better assist the detection needle 20 in inserting and detecting the soil without affecting the detection of the detection needle 20. When the detection needle 20 is retracted, the oil-absorbing rubber 28 can also remove the soil adhesion on its surface, so that the surface of the detection needle 20 can be cleaned to a certain extent. At the same time, due to the presence of the ultrasonic vibration rod 33 and the truncated table vibration source 34, the ultrasonic cavitation effect, mechanical effect and thermal effect can promote the penetration and absorption of the plant extract oil with lubricating and rust-proof effects on the surface of the detection needle 20, forming a more stable protective film, thereby further improving the service life of the detection needle 20.

[0053] The three detection needles 20 are inserted into the soil at an angle to better detect the soil conditions of the same soil layer, which is conducive to determining the properties of the corresponding soil layer and reducing detection errors. Each detection needle 20 is located in the middle position between the two groups of ultrasonic vibration rods 33. When the frequencies and phases of the two groups of ultrasonic vibration rods 33 are consistent, the interference effect of the superposition of vibrations will cause the vibration waves generated by the two groups of ultrasonic vibration rods 33 to be located on their connecting plane, and the vibration waves of the vertical part at the middle position of the connecting plane will form a reinforcement area, which can further reduce the friction between the soil particles at this position, and then loosen this part of the soil, promote the discharge of air and moisture in the soil, reduce the pore pressure of the soil, and help reduce the adsorption of the soil on the detection needle 20, so that the position The detection needle 20 located in the middle of the two groups of ultrasonic vibration rods 33 is easier to insert into the soil. When the air and moisture in the soil are discharged, the contact between the soil particles and the detection needle 20 will be closer, which is beneficial to the actual detection effect of the detection needle 20 on the soil. In addition, since the outer wall of the truncated cone vibration source 34 is inclined and densely arranged on the outer wall of the ultrasonic vibration rod 33, the two groups of ultrasonic vibration rods 33 form an ultrasonic reinforcement area to generate a thrust, which can further promote and guide the insertion of the detection needle 20 into the soil. After completing the soil detection, the detection needle 20 transmits the electrical signal through the wire 15 and displays it on the digital display screen on the three-way connector 1, which is convenient for recording and archiving data of different soil layers, and is conducive to the comprehensive selection of suitable construction areas.

[0054] If different soil types are encountered during the insertion process, the joint can be replaced by rotating the upper part of the oil-absorbing rubber 28. First, the hydraulic support 19 is started to recover the detection needle 20. When the lower end of the detection needle 20 is completely separated from the oil-absorbing rubber 28, the operation of the hydraulic support 19 is stopped, and then the upper part of the oil-absorbing rubber 28 is reversely rotated by the motor 31, so that the tenon 25 on the adapter block 24 is separated from the mortise 23 on the detection needle 20, that is, the initially connected joint is separated from the detection needle 20, and then the detection needle 20 is continued to be retracted, and at the same time, the upper part of the oil-absorbing rubber 28 is rotated so that the other joint is located at the specified position, and then the detection needle 20 is extended, so that the mortise 23 on the detection needle 20 is aligned with the tenon 25 on the adapter block 24 on the joint, and the detection needle 20 is combined with the adapter block 24 on the joint by rotating the upper part of the oil-absorbing rubber 28, and finally the replacement of joints of different shapes on the detection needle 20 is realized.

[0055] The streamlined joint 26 can assist the detection needle 20 to perform better detection in silt. Silt is relatively fine and not very sticky but easily disturbed. The streamlined joint 26 can reduce the friction of the detection needle 20 during the insertion process, prevent the detection needle 20 from excessively disturbing the silt during the insertion process, and ensure that the soil structure of the silt will not be greatly damaged after the silt is inserted, thereby ensuring the accuracy of silt soil detection. The triangular thorn-shaped joint 27 is sharper and easier to penetrate the pores between sand particles to reduce the contact area with the sand and reduce the penetration resistance, thereby assisting detection. The needle 20 can be inserted into the sand more smoothly. In addition, when encountering clay, the triangular thorn-shaped joint 27 can cut the clay, thereby reducing the adhesion effect of the clay and enhancing the insertion ability of the detection needle 20. At the same time, when encountering soil with relatively high moisture content, the water guide groove 22 on the side of the detection needle 20 and the adapter block 24 can be used to guide the discharge of water, reducing the impact of moisture on the insertion process, so that the soil quality of different soils can be better detected, thereby improving the application scope of the soil quality detection equipment, and thus ensuring the accuracy of soil quality detection while also improving the efficiency of soil quality detection.

[0056] When two different connectors encounter resistance in the soil, the pressure detector 21 on the detection needle 20 will be compressed, and the electrical signal will be transmitted through the wire 15 and displayed on the digital display screen on the surface of the three-way connector 1. When the pressure reaches a certain threshold, an alarm will be sounded. At this time, you can consider replacing a different connector or stopping the operation to protect the connector and reduce the damage it receives during the insertion process, thereby increasing the service life of the connector.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A soil quality detection device for construction, comprising a base plate (13), a through hole is provided at the middle position of the top of the base plate (13), and a plurality of ground nails (14) are installed at the bottom end of the base plate (13), a fixing column (12) is fixedly installed at the through hole position of the top of the base plate (13), a threaded drill rod (4) is connected to the inside of the fixing column (12), a tee joint (1) is fixedly installed at the top of the threaded drill rod (4), two groups of cross bars (2) are symmetrically installed on the outer side wall of the tee joint (1), and a handle (3) is installed at one end of the two groups of cross bars (2) away from the tee joint (1), characterized in that: Also includes: A detection mechanism, the detection mechanism comprising a first fixing plate (16) and a joint replacement assembly, the first fixing plate (16) being fixedly mounted on the inner wall of a threaded drill rod (4), and three groups of hydraulic supports (19) being mounted on the bottom end of the first fixing plate (16), the three groups of hydraulic supports (19) being arranged in an inclined and staggered manner with respect to each other, and the output ends of the three groups of hydraulic supports (19) being all mounted with detection needles (20), the joint replacement assembly being arranged on the inner wall of the threaded drill rod (4) and being used for installing different joints on the bottom end of the detection needle (20) according to detection requirements, and three groups of through holes corresponding to the three groups of detection needles (20) being penetrated through the inner wall of the threaded drill rod (4); An ultrasonic auxiliary mechanism, the ultrasonic auxiliary mechanism being arranged on the threaded drill rod (4) and being used to assist the soil detection device in finding a suitable plot of land and assisting the drilling of the threaded drill rod (4) and the insertion detection of the detection needle (20); A data transmission and display mechanism, the data transmission and display mechanism being arranged on the three-way connector (1) and being used for transmitting and displaying data detected by the detection needle (20); A moving mechanism is arranged on a base plate (13) and is used to enable the entire device to move.

2. The soil quality detection equipment for construction according to claim 1 is characterized in that: The joint replacement assembly comprises an oil-absorbing rubber (28) and a three-way telescopic platform (30). The oil-absorbing rubber (28) is composed of an upper and lower layer, and the oil-absorbing rubber (28) contains plant extract oil. The lower layer of the oil-absorbing rubber (28) is fixedly mounted on the inner wall of the threaded drill rod (4). The upper layer of the oil-absorbing rubber (28) is rotatably connected to the lower layer of the oil-absorbing rubber (28). The upper layer of the oil-absorbing rubber (28) is provided with six groups of through holes, and the six groups of through holes are all inclined. Three groups of the through holes are inserted with streamlined joints (26), and the other three groups of the through holes are inserted with triangular thorn-shaped joints (27). The three groups of streamlined joints (2 6) and three groups of triangular thorn-shaped joints (27) are arranged alternately with each other, and the tops of the three groups of streamline joints (26) and the three groups of triangular thorn-shaped joints (27) are commonly provided with connecting components for connecting the streamline joints (26) or the triangular thorn-shaped joints (27) with the detection needle (20), and the lower layer of the oil-absorbing rubber (28) is penetrated by three groups of through holes corresponding to the three groups of through holes on the three groups of detection needles (20) and the threaded drill rod (4), and the three-way telescopic platform (30) is fixedly mounted on the inner wall of the threaded drill rod (4), and the three-way telescopic platform (30) and the oil-absorbing rubber (28) are commonly provided with a driving component for driving the upper layer of the oil-absorbing rubber (28) to rotate.

3. The soil quality detection equipment for construction according to claim 2 is characterized in that: The connecting component comprises six groups of adapter blocks (24), wherein three groups of the adapter blocks (24) are respectively fixedly mounted on the top ends of three groups of streamlined joints (26), and the other three groups of the adapter blocks (24) are respectively fixedly mounted on the top ends of three groups of triangular thorn-shaped joints (27). The top ends of the six groups of adapter blocks (24) are all semi-cylindrical, and tenons (25) are installed at the semi-cylindrical parts of the top ends of the six groups of adapter blocks (24). The bottom ends of the three groups of detection needles (20) are all semi-cylindrical, and mortises (23) matching the tenons (25) are opened at the semi-cylindrical parts of the bottom ends of the three groups of detection needles (20).

4. The soil quality detection equipment for construction according to claim 3 is characterized in that: Water guide grooves (22) are provided on the outer walls of the three groups of detection needles (20) and the outer walls of the six groups of adapter blocks (24), and the positions of the water guide grooves (22) on the detection needles (20) correspond to the positions of the water guide grooves (22) on the adapter blocks (24).

5. The soil quality detection equipment for construction according to claim 2 is characterized in that: The driving component comprises a motor (31), the motor (31) is fixedly mounted on the bottom end of the three-way telescopic platform (30), and the output end of the motor (31) is fixedly connected to a rotating rod (29), and the end of the rotating rod (29) away from the motor (31) sequentially penetrates the three-way telescopic platform (30) and the lower layer of the oil-absorbing rubber (28), and is fixedly connected to the upper layer of the oil-absorbing rubber (28).

6. The soil quality detection equipment for construction according to claim 2, characterized in that: The ultrasonic auxiliary mechanism comprises three groups of ultrasonic vibration rods (33) and three groups of fixing grooves (35). The three groups of fixing grooves (35) are evenly arranged on the outer wall of the threaded drill rod (4), and the three groups of fixing grooves (35) are respectively located at the middle position between the three groups of through holes on the threaded drill rod (4). The three groups of ultrasonic vibration rods (33) are respectively rotatably connected in the three groups of fixing grooves (35). The three groups of output ends on the three-way telescopic platform (30) are all installed with telescopic rods (32). The ends of the three groups of telescopic rods (32) away from the three-way telescopic platform (30) all penetrate the inner wall of the threaded drill rod (4) and are respectively rotatably connected to the three groups of ultrasonic vibration rods (33). Multiple groups of truncated cone vibration sources (34) are evenly installed on the outer walls of the three groups of ultrasonic vibration rods (33). The outer side walls of the multiple groups of truncated cone vibration sources (34) are all arranged in an inclined shape.

7. The soil quality detection equipment for construction according to claim 1, characterized in that: The data transmission and display mechanism comprises a wire (15) and a digital display screen, wherein the digital display screen is mounted on the top of the three-way connector (1), one end of the wire (15) is connected to the digital display screen on the three-way connector (1), and the other end of the wire (15) passes through the first fixing plate (16) and is electrically connected to the detection needle (20) on the hydraulic support (19).

8. The soil quality detection equipment for construction according to claim 1, characterized in that: The moving mechanism comprises a limit plate (9) and four groups of first vertical rods (6); the limit plate (9) is slidably connected to the outer wall of the fixed column (12); and the bottom end of the limit plate (9) is evenly fixedly connected to four groups of connecting rods (10); the bottom ends of the four groups of connecting rods (10) are all movably connected to rollers (11); the top end of the bottom plate (13) is penetrated by openings for the four groups of connecting rods (10) and the four groups of rollers (11) to pass through; the top end of the limit plate (9) is fixedly connected to four groups of second vertical rods (8); and the limit plate (9) is fixedly connected to a driving ring (7) through the four groups of second vertical rods (8); the driving ring (7) is threadedly connected to the threaded drill rod (4); the four groups of the first vertical rods (6) are evenly fixedly installed on the top end of the bottom plate (13); and the top ends of the four groups of the first vertical rods (6) all penetrate the bottom wall of the driving ring (7) and are fixedly connected to the limit ring (5) together.

9. The soil quality detection equipment for construction according to claim 1, characterized in that: A fixing rod (17) is fixedly connected at the center position of the bottom end of the first fixing plate (16), and the bottom end of the fixing rod (17) is fixedly connected to a second fixing plate (18). The output ends of the three groups of hydraulic supports (19) pass through the top wall of the second fixing plate (18) and are fixedly connected to the second fixing plate (18).

10. The soil quality detection equipment for construction according to claim 1, characterized in that: The three groups of detection needles (20) are all equipped with pressure detectors (21).

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