Loess landslide slope troughing device and method

Abstract

The present invention discloses a device and method for exploring a loess landslide slope, and relates to the field of geological prospecting technology. The present invention comprises a mounting frame, on which a driving screw is rotatably mounted, and a threaded sleeve is threadedly mounted on the driving screw, and further comprises: a plurality of shovel plates, wherein the plurality of shovel plates are spliced to form a square frame; and the method comprises the following steps: S1: selecting a loess landslide-prone area with high earthquake intensity, strong seasonal freeze-thaw effect, and frequent concentrated rainfall as a research target area. The advantage is that during the exploration process, the downward movement of the shovel plate can be used to automatically cause the blade to move back and forth, thereby cutting the plant roots and rocks below the shovel plate. In addition, when the downward movement of the shovel plate is blocked, it can also be kept stationary, while still cutting the plant roots and rocks below during the stationary process, thereby effectively ensuring the exploration efficiency and avoiding the forced downward pressure on the plant roots and rocks, which may cause the trough wall to collapse.

Description

Technical Field

[0001] The present invention relates to the field of geological exploration technology, and in particular to a device and method for exploring a loess landslide slope trench. Background Art

[0002] Loess itself has large pores, developed vertical joints, easily softens when exposed to water, and has poor structural stability. It is very prone to landslide disasters under the induction of factors such as rainfall, earthquakes, freeze-thaw and groundwater. The damage is particularly great in areas where loess is distributed, seriously threatening the safety of life and property, and damaging infrastructure and the ecological environment.

[0003] In order to study the instability characteristics, disaster-causing factors and migration patterns of loess landslides, it is necessary to select loess landslide-prone areas as research target areas in areas with high earthquake intensity, strong seasonal freeze-thaw and heavy rainfall. High-density electrical methods, geological radar, trenching, drilling and other means should be used to identify the engineering geological and hydrogeological conditions of the study area, and the site of the in-situ monitoring test field for loess slopes should be determined. After that, on-site rainfall and temperature monitoring should be carried out for more than three years; remote sensing monitoring, low-altitude photography by drones, resistivity and wave velocity tests should be carried out; ground temperature, surface / deep displacement, water content, soil pressure, and groundwater level monitoring networks should be deployed at the upper, middle and lower parts of the slope to conduct multi-field coordinated three-dimensional monitoring of the slope under multiple freeze-thaw cycles, and the monitoring data should be used to establish an early warning model. When a landslide disaster is likely to occur, early warning information should be issued in a timely manner to organize personnel evacuation and reduce the harm caused by the landslide.

[0004] Currently, trenching is generally divided into two types: machine trenching and manual trenching. Due to the characteristics of loess slopes, trench wall collapse is prone to occur when using machine trenching. In addition, in some areas with large slopes or inconvenient transportation, it is difficult for the machine to move to the designated trenching area. Therefore, trenching on loess slopes is generally done manually using tools such as shovels or pickaxes.

[0005] When conducting manual trenching, there are problems such as difficulty in controlling the trench size and high labor intensity. In addition, the presence of plant roots and stones in the soil during the trenching process will also delay the progress of the trenching. Even if handled improperly, the risk of trench wall collapse will increase. Therefore, in order to conduct trenching treatment faster and more stably, it is necessary to design a loess landslide slope trenching device and method. Summary of the Invention

[0006] In view of the deficiencies in the prior art, the present invention provides a device and method for exploring a loess landslide slope trough, which solves the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A loess landslide slope troughing device includes a mounting frame, a driving screw is rotatably mounted on the mounting frame, and a threaded sleeve is threadedly mounted on the driving screw, and further includes:

[0009] Multiple shovel plates, multiple shovel plates are spliced to form a square frame, the shovel plates are connected to the threaded sleeves through connecting rods, and a knife strip is sealed and slidably installed on the bottom of the shovel plate, and the bottom of the knife strip is inclined on the side close to the driving screw;

[0010] Multiple side plates, each of which is slidably mounted on a side of the corresponding shovel plate away from the drive screw, and a reciprocating drive assembly that cooperates with the knife strip is installed between the side plate and the shovel plate, and the reciprocating drive assembly drives the knife strip to slide back and forth on the bottom of the shovel plate by the movement of the relative side plate during the shovel plate exploration process;

[0011] Multiple buffer assemblies are respectively installed on each shovel plate. The buffer assembly is used to buffer the shovel plate relative to the threaded sleeve when the resistance to the downward movement of the shovel plate is large. The buffer assembly includes a connecting block slidably installed on the side wall of the shovel plate, and a drive assembly is installed between the connecting block and the reciprocating drive assembly. The drive assembly is used to drive the reciprocating sliding of the knife bar when the shovel plate performs a buffering movement relative to the threaded sleeve.

[0012] Furthermore, a connecting rod is fixedly mounted on the side wall of the threaded sleeve, and a slot cooperating with the connecting block is formed at one end of the connecting rod away from the threaded sleeve, and a connecting rod is inserted between the connecting rod and the connecting block.

[0013] Furthermore, a moving rod is fixedly installed on the top of the blade through two fixing rods, a moving groove that slides with the moving rod is provided in the shovel plate, and two vertical grooves that slide with the corresponding fixing rods are provided at the bottom of the moving groove.

[0014] Furthermore, the reciprocating drive assembly consists of a groove, a rotating rod, an incomplete gear, a fixed gear, a driving rack and two fixed racks. The groove is opened in the moving rod, the rotating rod is rotatably mounted on the shovel plate, and the rotating rod and the moving rod are slidingly matched. The incomplete gear is fixedly mounted on the end of the rotating rod located in the groove, the fixed gear is fixedly mounted on the end of the rotating rod located outside the shovel plate, the driving rack is fixedly mounted on the top of the side plate, and the driving rack is meshed with the fixed gear. The two fixed racks are respectively fixedly mounted on the upper and lower ends of the groove, and the two fixed racks are staggered and meshed with the incomplete gear.

[0015] Furthermore, the driving assembly consists of a round rod, a pinion and a connecting rack. The round rod is fixedly mounted on the end of the incomplete gear away from the fixed gear. The pinion is mounted on the round rod through a one-way bearing. The connecting rack is fixedly mounted on the end of the connecting block away from the connecting support rod, and the connecting rack is meshed with the pinion.

[0016] Furthermore, a sliding groove that slidably cooperates with the connecting block is provided on the side wall of the shovel plate, and a plurality of springs are installed between the bottom of the sliding groove and the connecting block.

[0017] Furthermore, a guide rod that slides with the connecting support rod is fixedly installed on the mounting frame, a connecting seat is fixedly installed on the side wall of the shovel plate, and a square hole is opened on the connecting seat, and a connecting rod that slides with the square hole is fixedly installed on the side plate.

[0018] Furthermore, two symmetrically arranged receiving grooves are provided on the side walls of the square hole, and clamping blocks are slidably installed in the two receiving grooves, and fixed blocks are fixedly installed on the side walls of the two clamping blocks. A bidirectional screw is rotatably installed on the connecting seat, and the bidirectional screw is threadedly connected to the two fixed blocks.

[0019] Furthermore, a rubber sheet is installed on one end of the clamping block close to the square hole through a compression spring, and a limit rod is fixedly installed on one end of the rubber sheet close to the clamping block, which slides with the clamping block. A limit block is fixedly installed on the side wall of the clamping block, and a limit groove is opened on the side wall of the accommodating groove, which slides with the limit block.

[0020] A method for trenching a loess landslide slope, using the above-mentioned trenching device for a loess landslide slope, comprises the following steps:

[0021] S1: Select a loess landslide-prone area with high earthquake intensity, strong seasonal freeze-thaw action, and frequent concentrated rainfall as the research target area. Use measurement tools to accurately determine the location and boundaries of the exploration trench in the research target area and mark it with wooden stakes or lime lines;

[0022] S2: Use the plug-in rod to fix the shovel plate and the connecting rod. At the same time, insert the connecting rod on the side plate into the square hole in the connecting seat, and tighten the bidirectional screw to fix the connecting rod in the connecting seat.

[0023] S3: Move the installed device to the marked area and make the bottom of the square frame formed by the multiple shovel plates match the exploration groove area. Then adjust the tightness of the bidirectional screw according to the softness of the soil to control the friction between the connecting rod and the connecting seat. Specifically, when the soil is relatively loose, the friction between the connecting rod and the connecting seat is greater, and when the soil is relatively compact, the friction between the connecting rod and the connecting seat is smaller.

[0024] S4: Rotate the drive screw clockwise to insert multiple shovels into the ground simultaneously. During the insertion process, the side plates move up relative to the shovels. At this time, the meshing effect of the driving rack and the fixed gear on it causes the rotating rod to rotate. Then, under the staggered meshing of the incomplete gear and the two fixed racks, the blades move back and forth at the bottom of the shovels, cutting the soil and plant roots, allowing the shovels to be inserted into the soil more smoothly.

[0025] S5: When a small stone blocks the downward movement of the shovel plate, the shovel plate moves upward relative to the connecting block. At this time, the connecting rack on the connecting block drives the small gear to rotate. The one-way bearing is in a locked state at this time, so that the round rod drives the incomplete gear to rotate at the same time, so that the blade continues to move back and forth while the shovel plate remains stationary. In addition, the movement of the connecting block on the shovel plate compresses multiple springs, so the elastic force of the springs also causes the shovel plate to be subjected to a gradually increasing downward force. Under the pressure and the cutting effect of the blade, the small stone can be cut off, ensuring that the shovel plate continues to move downward;

[0026] S6: After the small stone is cut off, the shovel plate is quickly moved down and reset under the elastic force of the spring. At this time, the one-way bearing is in a rotating state. Therefore, the movement of the connecting block relative to the shovel plate will not drive the incomplete gear to rotate, thereby avoiding the movement interference between the movement of the connecting block and the movement of the side plate relative to the shovel plate.

[0027] S7: After the shovel is inserted into the ground to a specified depth, the driving screw is rotated counterclockwise to move the multiple shovels up and reset. Then, one shovel is kept connected to the threaded sleeve, and the other shovels are removed. Then, the shovel is moved into the cut exploration groove along the specified spacing in sequence, and the driving screw is rotated clockwise and counterclockwise repeatedly. The soil in the exploration groove can be divided into multiple parts. After that, the staff can use a shovel or other tool to shovel out the soil in the exploration groove.

[0028] Compared with the existing technology, the advantages of the present invention are:

[0029] 1: By setting a reciprocating knife bar at the bottom of the shovel, the plant roots and stones under the shovel can be cut during the trenching process, avoiding the obstruction of the shovel movement and delaying the trenching progress. At the same time, it can also avoid forcibly exerting downward pressure on the plant roots and stones, causing the trench wall to collapse.

[0030] 2: Through the cooperation of the side plate and the reciprocating drive assembly, the downward movement direction of the shovel plate can be limited, and the movement of the shovel plate relative to the side plate can be used to drive the reciprocating movement of the knife bar, so that it can automatically complete the cutting of plant roots and stones without the need for an additional power device.

[0031] 3: Through the cooperation of the buffer assembly and the drive assembly, when the shovel board is subject to a large downward resistance, it can be kept stationary. At the same time, it can continue to provide drive for the reciprocating movement of the blade while the shovel board remains stationary, which can effectively cut the stone stuck in the shovel board and ensure the smooth completion of the entire trough operation.

[0032] 4: Through the cooperation of the clamping block and the rubber sheet, the movement resistance of the side plate relative to the shovel plate can be adjusted. Therefore, when the soil in the trench is relatively soft, the movement of the shovel plate during the trenching process can be used to compact the outer wall of the trench to a certain extent, thereby improving the stability of the trench and reducing the possibility of trench wall collapse.

[0033] To sum up, the present invention can use the downward movement of the shovel plate to automatically move the knife bar back and forth during the trenching process, so as to cut the plant roots and stones below the shovel plate. In addition, when the downward movement of the shovel plate is blocked, it can also be kept stationary, and at the same time, the plant roots and stones below are still cut during the stationary process, thereby effectively ensuring the efficiency of trenching, and avoiding forcibly applying downward pressure on the plant roots and stones to cause the trench wall to collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic structural diagram of a loess landslide slope trough device proposed by the present invention;

[0035] Figure 2 for Figure 1 Structural diagram from another perspective;

[0036] Figure 3 for Figure 1 Schematic diagram of the structure between the middle drive screw and one of the scraper plates;

[0037] Figure 4 for Figure 3 Schematic diagram of the structure at the middle shovel plate;

[0038] Figure 5 for Figure 4 Schematic diagram of the structure after removing the blade and side panels;

[0039] Figure 6 for Figure 4 Schematic diagram of the structure at the middle blade;

[0040] Figure 7 for Figure 4 A top view of

[0041] Figure 8 for Figure 7 Schematic diagram of the structure of the AA surface;

[0042] Figure 9 for Figure 7 Schematic diagram of the structure of the middle BB surface;

[0043] Figure 10 for Figure 6 Schematic diagram of the structure at the fixed gear;

[0044] Figure 11 for Figure 5 Schematic diagram of the internal structure of the middle connector.

[0045] In the figure: 1. Mounting frame; 2. Drive screw; 3. Threaded sleeve; 4. Connecting support rod; 5. Shovel plate; 6. Blade; 7. Guide rod; 8. Fixed rod; 9. Moving rod; 10. Vertical slot; 11. Moving slot; 12. Groove; 13. Fixed rack; 14. Rotating rod; 15. Incomplete gear; 16. Fixed gear; 17. Connecting seat; 18. Connecting rod; 19. Side plate; 20. Drive rack; 21. Connecting block; 22. Connecting rod; 23. Slide groove; 24. Spring; 25. Round rod; 26. Pinion; 27. Clamping block; 28. Compression spring; 29. Rubber sheet; 30. Fixed block; 31. Bidirectional screw. DETAILED DESCRIPTION

[0046] Reference Figure 1-Figure 3 A loess landslide slope exploration trough device includes a mounting frame 1, a driving screw 2 is rotatably mounted on the mounting frame 1, and a threaded sleeve 3 is threadedly mounted on the driving screw 2. The mounting frame 1 is composed of a square frame and a circular base fixedly connected to the square frame through a cross. The driving screw 2 is rotatably mounted on the circular base through a bearing, and a control dial is fixed on the top of the driving screw 2 for controlling the rotation of the driving screw 2.

[0047] Reference Figures 1-11 A loess landslide slope grooving device also includes multiple shovel plates 5, which are spliced into a square frame. The bottom of the square frame is in the shape and size of the grooving. The shovel plates 5 are connected to the threaded sleeve 3 through a connecting rod 4. The connecting rod 4 is fixedly connected to the threaded sleeve 3. A guide rod 7 that slides with the connecting rod 4 is fixedly installed on the mounting frame 1. With the cooperation of the connecting rod 4, when the driving screw 2 rotates, the shovel plate 5 can be driven up and down by the threaded sleeve 3. When the shovel plate 5 moves down, it can be inserted into the soil for grooving.

[0048] Multiple buffer components are installed on each shovel plate 5 respectively. The buffer component is used to buffer the shovel plate 5 relative to the threaded sleeve 3 when the downward resistance of the shovel plate 5 is large. The buffer component includes a connecting block 21 slidably installed on the side wall of the shovel plate 5. A slide groove 23 is provided on the side wall of the shovel plate 5 to slide with the connecting block 21, and multiple springs 24 are installed between the bottom of the slide groove 23 and the connecting block 21. Under the cooperation of the slide groove 23 and the connecting block 21, the shovel plate 5 can move up and down within a certain range relative to the connecting support rod 4. The design of multiple springs 24 is that when the upward thrust on the shovel plate 5 is small, It can ensure that the connecting block 21 is located at the top of the slide groove 23. Therefore, when the shovel plate 5 does not encounter sufficiently large resistance during the downward movement of the trough, the driving screw 2 rotates to drive the threaded sleeve 3 to move downward, which can simultaneously drive the shovel plate 5 to move downward. Conversely, when the shovel plate 5 encounters sufficiently large resistance, the driving screw 2 rotates to drive the threaded sleeve 3 to move downward, which will cause the shovel plate 5 to move upward a certain distance relative to the connecting block 21 to compress the spring 24, so that when the shovel plate 5 encounters a stone during the downward movement, it can have a certain buffer movement space relative to the connecting block 21, thereby avoiding the problem that the movement of one shovel plate 5 is blocked, resulting in the other shovel plates 5 being unable to move downward smoothly.

[0049] A slot that cooperates with the connecting block 21 is provided at the end of the connecting rod 4 away from the threaded sleeve 3, and a plug-in rod 22 is inserted between the connecting rod 4 and the connecting block 21. The cooperation between the slot and the connecting block 21 can limit the connection between the shovel plate 5 and the connecting rod 4. The design of the plug-in rod 22 can ensure the fixing effect of the connecting rod 4 and the connecting block 21. A positioning piece is provided at one end of the plug-in rod 22, and a positioning nut is threadedly connected to the other end.

[0050] A knife strip 6 is sealed and slidably installed at the bottom of the shovel plate 5. The bottom of the knife strip 6 is close to the driving screw 2 and is set with an inclined surface. The knife strip 6 is designed to cut plant roots and stones in the soil, so that the shovel plate 5 can move downward more smoothly, thereby improving the efficiency of the trench exploration and reducing the possibility of trench wall collapse. The inclined surface of the knife strip 6 can exert an extrusion effect on the stone when it contacts the stone, causing it to move toward the inside of the trench, thereby reducing the probability of the stone being squeezed and damaging the side wall of the trench.

[0051] Multiple side plates 19, each side plate 19 is slidably mounted on the side of the corresponding shovel plate 5 away from the driving screw 2, a connecting seat 17 is fixedly mounted on the side wall of the shovel plate 5, and a square hole is opened on the connecting seat 17, and a connecting rod 18 that slides with the square hole is fixedly mounted on the side plate 19. Through the cooperation between the connecting rod 18 and the connecting seat 17, the moving direction of the side plate 19 relative to the shovel plate 5 can be limited, and the existence of the side plate 19 can further limit the moving direction of the shovel plate 5 away from the side of the mounting frame 1, thereby improving the movement stability of the shovel plate 5 during the grooving process.

[0052] Two symmetrically arranged receiving grooves are provided on the side wall of the square hole, and clamping blocks 27 are slidably installed in the two receiving grooves, and fixed blocks 30 are fixedly installed on the side walls of the two clamping blocks 27. A two-way screw 31 is rotatably installed on the connecting seat 17, and the two-way screw 31 and the two fixed blocks 30 are both threadedly connected. A knob is fixedly installed on one end of the two-way screw 31 outside the connecting seat 17, and a rotating hole that rotates with the two-way screw 31 is provided in the connecting seat 17, and a rotating hole that slides with the two fixed blocks 30 is also provided in the connecting seat 17. The two-way screw 31 is rotated to adjust the spacing between the two clamping blocks 27. The clamping effect of the two clamping blocks 27 and the two sides of the connecting rod 18 can be used to adjust the movement resistance of the side plate 19 relative to the shovel plate 5. Therefore, when grooving in soft areas, the movement resistance of the side plate 19 can be increased so that the shovel plate 5 can apply a certain pressure to the outer wall of the grooving during the grooving process, thereby compacting the outer wall of the grooving to a certain extent, thereby improving the stability of the grooving and reducing the possibility of grooving wall collapse.

[0053] A rubber sheet 29 is installed at one end of the clamping block 27 near the square hole through a compression spring 28, and a limit rod that slides with the clamping block 27 is fixedly installed at one end of the rubber sheet 29 near the clamping block 27. A limit block is fixedly installed on the side wall of the clamping block 27, and a limit groove that slides with the limit block is provided on the side wall of the accommodating groove. The limit block and the limit groove are designed to limit the moving direction of the clamping block 27, and the limit rod is designed to limit the moving direction of the rubber sheet 29. The limit rod, limit block and limit groove are not shown in the figure. The cooperation between the rubber sheet 29 and the compression spring 28 facilitates better regulation of the movement resistance of the side plate 19.

[0054] A moving rod 9 is fixedly installed on the top of the blade 6 through two fixed rods 8. A moving groove 11 is provided in the shovel plate 5 and slides with the moving rod 9. The bottom of the moving groove 11 is provided with two vertical grooves 10 that slide with the corresponding fixed rods 8. With the cooperation of the fixed rods 8 and the moving rods 9, the blade 6 can slide back and forth at the bottom of the shovel plate 5, thereby improving the cutting effect of the blade 6 on plant roots and stones.

[0055] A reciprocating drive assembly that cooperates with the blade 6 is installed between the side plate 19 and the shovel plate 5. The reciprocating drive assembly uses the movement of the relative side plate 19 during the shovel plate 5 to drive the blade 6 to slide back and forth at the bottom of the shovel plate 5. The reciprocating drive assembly consists of a groove 12, a rotating rod 14, an incomplete gear 15, a fixed gear 16, a driving rack 20 and two fixed racks 13;

[0056] The groove 12 is opened in the moving rod 9, the rotating rod 14 is rotatably installed on the shovel plate 5, and the rotating rod 14 and the moving rod 9 are slidably matched, the incomplete gear 15 is fixedly installed on the end of the rotating rod 14 located in the groove 12, and the fixed gear 16 is fixedly installed on the end of the rotating rod 14 located outside the shovel plate 5. The driving rack 20 is fixedly installed on the top of the side plate 19, and the driving rack 20 is meshed with the fixed gear 16. The two fixed racks 13 are respectively fixedly installed on the upper and lower ends of the groove 12, and the two fixed racks 13 are staggered with the incomplete gear 15. When the shovel plate 5 is inserted into the ground, the side plate 19 maintains its position unchanged under the support of the ground. At this time, it moves upward relative to the shovel plate 5. The upward movement of the side plate 19 will drive the driving rack 20 to move at the same time, and the meshing effect of the driving rack 20 and the fixed gear 16 will be used to make the incomplete gear 15 rotate in the groove 12. The arc length of the toothed part on the incomplete gear 15 has two included angles less than 170°. When the incomplete gear 15 rotates, the toothed part thereof intermittently meshes with the two fixed racks 13. The upper and lower position design of the two fixed racks 13 makes it possible for the incomplete gear 15 to drive the moving rod 9 to reciprocate in the shovel plate 5 when it rotates, thereby making the knife bar 6 reciprocate at the lower end of the shovel plate 5, thereby realizing the cutting of plant roots and stones. No additional power device is required, and the degree of automation is high.

[0057] A drive assembly is installed between the connecting block 21 and the reciprocating drive assembly. The drive assembly is used to drive the reciprocating sliding of the blade 6 when the shovel plate 5 performs a buffering motion relative to the threaded sleeve 3. The drive assembly consists of a round rod 25, a pinion 26 and a connecting rack.

[0058] The round rod 25 is fixedly mounted on the end of the incomplete gear 15 away from the fixed gear 16, and the pinion 26 is mounted on the round rod 25 through a one-way bearing. The connecting rack is fixedly mounted on the end of the connecting block 21 away from the connecting support rod 4, and the connecting rack is meshed with the pinion 26. When the shovel plate 5 is blocked from moving downward due to the presence of stones, the shovel plate 5 moves up relative to the connecting block 21. At this time, the connecting rack on the connecting block 21 drives the pinion 26 to rotate. The one-way bearing is in a locked state at this time. The pinion 26 drives the round rod 25 to rotate at the same time, and the round rod 25 drives the incomplete gear 15 to rotate, so that the knife bar 6 can continue to reciprocate when the movement of the shovel plate 5 is blocked and remains stationary, and the movement of the connecting block 21 on the shovel plate 5 compresses the multiple springs 24, so the elastic force of the springs 24 will also cause the shovel plate 5 to be subjected to a gradually increasing downward force. Under the pressure and the cutting effect of the blade 6, the stone can be cut off more quickly, ensuring that the shovel plate 5 continues to move downward. When the stone is cut off, the shovel plate 5 is quickly moved down and reset under the elastic force of the spring 24. At this time, the one-way bearing is in a rotating state, so the movement of the connecting block 21 relative to the shovel plate 5 will not drive the incomplete gear 15 to rotate, thereby avoiding the movement of the connecting block 21 and the movement of the side plate 19 relative to the shovel plate 5 to cause motion interference. When the stone is large and cannot be cut, the corresponding shovel plate 5 cannot move further after moving to the maximum distance relative to the connecting block 21. At this time, the rotation of the driving screw 2 is blocked, and the staff can know which shovel plate 5 has a large stone under it according to the protruding length of the connecting rod 18 on multiple shovel plates 5. Then, the multiple shovel plates 5 are removed from the soil, and other tools are used to cut or crush the large stone to continue with the subsequent exploration trenching.

[0059] The detachable design of the device also makes it easy to carry and assemble, and is more suitable for trenching on loess slopes.

[0060] In the present invention, a method for exploring a loess landslide slope trench comprises the following steps:

[0061] S1: Select a loess landslide-prone area with high earthquake intensity, strong seasonal freeze-thaw action, and frequent concentrated rainfall as the research target area. Use measurement tools to accurately determine the location and boundaries of the exploration trench in the research target area and mark it with wooden stakes or lime lines;

[0062] S2: Use the plug rod 22 to fix the shovel plate 5 and the connecting rod 4. At the same time, insert the connecting rod 18 on the side plate 19 into the square hole in the connecting seat 17, and tighten the bidirectional screw 31 to fix the connecting rod 18 in the connecting seat 17.

[0063] S3: Move the installed device to the marked area and make the bottom of the square frame formed by the multiple shovel plates 5 match the area of the exploration groove. Then, adjust the tightness of the bidirectional screw 31 according to the softness of the soil to control the friction between the connecting rod 18 and the connecting seat 17. Specifically, when the soil is relatively loose, the friction between the connecting rod 18 and the connecting seat 17 is greater, and when the soil is relatively compact, the friction between the connecting rod 18 and the connecting seat 17 is smaller.

[0064] S4: The driving screw 2 is rotated clockwise, so that multiple shovel plates 5 are inserted into the ground at the same time. During the insertion process, the side plate 19 moves upward relative to the shovel plates 5. At this time, the meshing effect of the driving rack 20 and the fixed gear 16 on it causes the rotating rod 14 to rotate. Then, under the staggered meshing of the incomplete gear 15 and the two fixed racks 13, the blade 6 reciprocates at the bottom of the shovel plates 5, thereby cutting the soil and plant roots, allowing the shovel plates 5 to be inserted into the soil more smoothly.

[0065] S5: When encountering a small stone that blocks the downward movement of the shovel plate 5, the shovel plate 5 moves upward relative to the connecting block 21. At this time, the connecting rack on the connecting block 21 drives the small gear 26 to rotate. The one-way bearing is in a locked state at this time, so that the round rod 25 drives the incomplete gear 15 to rotate at the same time, so that the knife bar 6 continues to reciprocate while the shovel plate 5 remains stationary. The movement of the connecting block 21 on the shovel plate 5 compresses the multiple springs 24. Therefore, the elastic force of the springs 24 will also cause the shovel plate 5 to be subjected to a gradually increasing downward force. Under the pressure and the cutting effect of the knife bar 6, the small stone can be cut off, ensuring that the shovel plate 5 continues to move downward.

[0066] S6: After the small stone is cut, the shovel plate 5 is quickly moved downward and reset under the elastic force of the spring 24. At this time, the one-way bearing is in a rotating state. Therefore, the movement of the connecting block 21 relative to the shovel plate 5 does not drive the incomplete gear 15 to rotate, thereby avoiding the movement interference between the movement of the connecting block 21 and the movement of the side plate 19 relative to the shovel plate 5.

[0067] S7: After the shovel plate 5 is inserted into the ground to a specified depth, the driving screw 2 is rotated counterclockwise to move the multiple shovel plates 5 upward and reset. Then, one shovel plate 5 is kept connected to the threaded sleeve 3, and the other shovel plates 5 are removed. Then, the shovel plate 5 is moved into the cut exploration groove in sequence along the specified interval, and the driving screw 2 is rotated clockwise and counterclockwise repeatedly. The soil in the exploration groove can be divided into multiple parts. After that, the staff can use a shovel or other tool to shovel out the soil in the exploration groove.

[0068] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A loess landslide trough device, comprising a mounting frame (1), a driving screw (2) being rotatably mounted on the mounting frame (1), and a threaded sleeve (3) being threadedly mounted on the driving screw (2), characterized in that: Also includes: A plurality of shovel plates (5) are spliced together to form a square frame, the shovel plates (5) are connected to the threaded sleeve (3) via a connecting rod (4), a knife strip (6) is sealingly and slidably mounted on the bottom of the shovel plate (5), and a side of the bottom of the knife strip (6) close to the driving screw (2) is provided with an inclined surface; A plurality of side plates (19), each of the side plates (19) is slidably mounted on a side of the corresponding shovel plate (5) away from the drive screw (2), a reciprocating drive assembly matched with the knife bar (6) is mounted between the side plate (19) and the shovel plate (5), and the reciprocating drive assembly drives the knife bar (6) to slide back and forth on the bottom of the shovel plate (5) by the movement of the side plate (19) relative to the shovel plate (5) during the grooving process; A plurality of buffer assemblies, each of which is mounted on each shovel plate (5), the buffer assemblies being used to buffer the shovel plate (5) relative to the threaded sleeve (3) when the downward resistance is large, the buffer assemblies comprising a connecting block (21) slidably mounted on the side wall of the shovel plate (5), and a drive assembly being mounted between the connecting block (21) and the reciprocating drive assembly, the drive assembly being used to drive the reciprocating sliding of the knife bar (6) when the shovel plate (5) performs a buffering motion relative to the threaded sleeve (3); A connecting rod (4) is fixedly mounted on the side wall of the threaded sleeve (3), and a slot matching the connecting block (21) is provided at one end of the connecting rod (4) away from the threaded sleeve (3), a plug-in rod (22) is inserted between the connecting rod (4) and the connecting block (21), a moving rod (9) is fixedly mounted on the top of the knife strip (6) through two fixed rods (8), a moving groove (11) slidably matched with the moving rod (9) is provided in the shovel plate (5), and two vertical grooves (10) slidably matched with the corresponding fixed rods (8) are provided at the bottom of the moving groove (11); The reciprocating drive assembly consists of a groove (12), a rotating rod (14), an incomplete gear (15), a fixed gear (16), a driving rack (20) and two fixed racks (13), wherein the groove (12) is opened in the moving rod (9), the rotating rod (14) is rotatably mounted on the shovel plate (5), and the rotating rod (14) and the moving rod (9) are slidably matched, the incomplete gear (15) is fixedly mounted on one end of the rotating rod (14) located in the groove (12), the fixed gear (16) is fixedly mounted on one end of the rotating rod (14) located outside the shovel plate (5), the driving rack (20) is fixedly mounted on the top of the side plate (19), and the driving rack (20) is meshed with the fixed gear (16), the two fixed racks (13) are fixedly mounted on the upper and lower ends of the groove (12), and the two fixed racks (13) are staggeredly meshed with the incomplete gear (15); A sliding groove (23) that slidably cooperates with the connecting block (21) is provided on the side wall of the shovel plate (5), and a plurality of springs (24) are installed between the bottom of the sliding groove (23) and the connecting block (21).

2. A loess landslide trough device according to claim 1, characterized in that: The driving assembly consists of a round rod (25), a pinion (26) and a connecting rack. The round rod (25) is fixedly mounted on one end of the incomplete gear (15) away from the fixed gear (16). The pinion (26) is mounted on the round rod (25) via a one-way bearing. The connecting rack is fixedly mounted on one end of the connecting block (21) away from the connecting support rod (4), and the connecting rack is meshed with the pinion (26).

3. A loess landslide trough device according to claim 2, characterized in that: A guide rod (7) that is slidably engaged with the connecting support rod (4) is fixedly mounted on the mounting frame (1), a connecting seat (17) is fixedly mounted on the side wall of the shovel plate (5), and a square hole is provided on the connecting seat (17), and a connecting rod (18) that is slidably engaged with the square hole is fixedly mounted on the side plate (19).

4. The loess landslide trough device according to claim 3, characterized in that: Two symmetrically arranged receiving grooves are provided on the side walls of the square hole, and clamping blocks (27) are slidably installed in the two receiving grooves. Fixed blocks (30) are fixedly installed on the side walls of the two clamping blocks (27). A bidirectional lead screw (31) is rotatably installed on the connecting seat (17), and the bidirectional lead screw (31) is threadedly connected to the two fixed blocks (30).

5. The loess landslide trough device according to claim 4, characterized in that: A rubber sheet (29) is installed on one end of the clamping block (27) close to the square hole through a compression spring (28), and a limit rod that slides with the clamping block (27) is fixedly installed on one end of the rubber sheet (29) close to the clamping block (27). A limit block is fixedly installed on the side wall of the clamping block (27), and a limit groove that slides with the limit block is opened on the side wall of the accommodating groove.

6. A method for trench-digging a loess landslide slope, using the loess landslide slope trench-digging device according to claim 5, characterized in that: The following steps are involved: S1: Select a loess landslide-prone area with high earthquake intensity, strong seasonal freeze-thaw action, and frequent concentrated rainfall as the research target area. Use measurement tools to accurately determine the location and boundaries of the exploration trench in the research target area and mark it with wooden stakes or lime lines; S2: Use the plug rod (22) to fix the shovel plate (5) and the connecting rod (4), and at the same time insert the connecting rod (18) on the side plate (19) into the square hole in the connecting seat (17), and tighten the bidirectional screw (31) so that the connecting rod (18) is fixed in the connecting seat (17); S3: Move the installed device to the marked area, and make the bottom of the square frame formed by the plurality of shovel plates (5) coincide with the area of the exploration groove, and then adjust the tightness of the bidirectional screw (31) according to the softness of the soil to control the friction between the connecting rod (18) and the connecting seat (17). Specifically, when the soil is relatively loose, the friction between the connecting rod (18) and the connecting seat (17) is increased, and when the soil is relatively tight, the friction between the connecting rod (18) and the connecting seat (17) is reduced; S4: The driving screw (2) is rotated clockwise, so that multiple shovel plates (5) are inserted into the ground at the same time. During the insertion process, the side plate (19) moves upward relative to the shovel plates (5). At this time, the rotating rod (14) is rotated by the meshing effect of the driving rack (20) and the fixed gear (16) thereon. Then, under the staggered meshing of the incomplete gear (15) and the two fixed racks (13), the blade (6) moves back and forth at the bottom of the shovel plates (5), thereby cutting the soil and plant roots and allowing the shovel plates (5) to be inserted into the soil more smoothly. S5: When a small stone blocks the downward movement of the shovel plate (5), the shovel plate (5) moves upward relative to the connecting block (21). At this time, the connecting rack on the connecting block (21) drives the small gear (26) to rotate. The one-way bearing is in a locked state at this time, so that the round rod (25) drives the incomplete gear (15) to rotate at the same time, so that the knife bar (6) continues to move back and forth while the shovel plate (5) remains stationary, and the movement of the connecting block (21) on the shovel plate (5) compresses the multiple springs (24). Therefore, the elastic force of the springs (24) also causes the shovel plate (5) to be subjected to a gradually increasing downward force. Under the pressure and the cutting effect of the knife bar (6), the small stone can be cut off to ensure that the shovel plate (5) continues to move downward; S6: After the small stone is cut off, the shovel plate (5) is quickly moved downward and reset under the elastic force of the spring (24). At this time, the one-way bearing is in a rotating state, so the movement of the connecting block (21) relative to the shovel plate (5) does not drive the incomplete gear (15) to rotate, thereby avoiding the movement of the connecting block (21) and the movement of the side plate (19) relative to the shovel plate (5) causing motion interference; S7: After the shovel plate (5) is inserted into the ground to a specified depth, the driving screw (2) is rotated counterclockwise to move the multiple shovel plates (5) upward and reset. Then, one shovel plate (5) is kept connected to the threaded sleeve (3), and the other multiple shovel plates (5) are removed. Then, the shovel plates (5) are moved into the cut and formed exploration groove along the specified spacing in sequence, and the driving screw (2) is repeatedly rotated clockwise and counterclockwise. Then, the soil in the exploration groove can be divided into multiple parts. Then, the staff can use a shovel tool to shovel out the soil in the exploration groove.

Images