Trigger-type undisturbed soil depth-fixed sampling equipment for geological disaster detection

Abstract

The present invention discloses a trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection, which includes a base, a trigger-type soil sampling mechanism, a trigger-type anti-falling-off mechanism, a depth adjustment auxiliary mechanism and a leveling and fixing assembly. The trigger-type soil sampling mechanism is arranged on the base, and a soil sampling cylinder is threadedly connected to the trigger-type soil sampling mechanism. The trigger-type anti-falling-off mechanism is arranged on the soil sampling cylinder. An adjustment sliding groove is arranged on the base, and the depth adjustment auxiliary mechanism is slidably connected to the adjustment sliding groove. The leveling and fixing assembly is arranged at the bottom of the base. An opening is arranged at the bottom of the soil sampling cylinder. The soil sampling cylinder is successively provided with an arc-shaped trigger cavity, a closed control cavity and a closed cavity from top to bottom. The present invention belongs to the technical field of geological disaster detection, specifically referring to a trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection, which solves the problems that are difficult to solve in the prior art, such as difficult to sample the soil at a specified depth, easy to drop soil during soil lifting, and difficult to obtain undisturbed soil.

Description

Technical Field

[0001] The present invention belongs to the technical field of geological disaster detection, and specifically refers to a trigger-type undisturbed soil fixed-depth sampling device for geological disaster detection. Background Art

[0002] Before treating geological disasters, soil sampling equipment is needed to sample the soil to facilitate the detection of the current situation of the soil, and then targeted treatment is carried out. Most of the existing technologies rotate and push a soil drill into the soil layer manually for soil sampling. When using this method, it is not only time-consuming and laborious, with low efficiency, but also difficult to accurately control the sampling depth, resulting in difficulty in sampling the soil at a specified depth. When the user rotates the soil drill in the reverse direction and pulls it out, some soil will fall from the soil drill, thus affecting the detection results. After taking out the soil sample, when the user pours the soil sample out of the soil drill, the soil samples from different soil layers will be mixed together, which is not conducive to the detection of the soil components at different depths. Moreover, when using this soil sampling method, the original structure of the soil will be damaged, and undisturbed soil cannot be obtained, which is not conducive to detection. Summary of the Invention

[0003] In view of the above situation, to overcome the defects of the prior art, the present invention provides a trigger-type undisturbed soil fixed-depth sampling device for geological disaster detection. Aiming at the technical problem of difficult accurate control of the sampling depth caused by the method of manually rotating the soil drill for soil sampling in the prior art, and aiming at the technical problem of partial soil falling from the soil drill during soil lifting in the prior art, through the combined use of a depth adjustment auxiliary mechanism and a trigger-type anti-falling mechanism, in the absence of any sensors, the technical effect of accurately controlling the sampling depth is achieved only through a simple mechanical structure. Before use, the sampling depth is determined by the depth adjustment auxiliary mechanism. When the specified depth is reached, the trigger-type anti-falling mechanism automatically closes the closing port. When lifting the soil, since the closing port is in a closed state, the technical problem of the soil sample falling from the soil drill during soil lifting is solved, ensuring the accuracy of the sampling result.

[0004] Aiming at the technical problems of damaging the original structure of the soil, being unable to obtain undisturbed soil, and the soil of different soil layers being mixed together caused by the existing soil sampling methods, through the combined use of a trigger-type soil sampling mechanism and a simple detachable structure, it is convenient for the user to quickly obtain undisturbed soil. Compared with the method of pouring the soil sample out of the soil drill in the prior art, the original structure of the soil sample will not be damaged during soil sampling in this solution, and undisturbed soil can be obtained, thus facilitating subsequent detection. Moreover, when using this method for soil sampling, the soil of different soil layers will not be mixed together, which is convenient for detecting the soil components at different depths.

[0005] The technical solution adopted by the present invention is as follows: The trigger-type undisturbed soil depth-sampling device for geological disaster detection provided by the present invention includes a base, a trigger-type soil sampling mechanism, a trigger-type anti-detachment mechanism, a depth adjustment auxiliary mechanism, and a leveling and fixing component. The trigger-type soil sampling mechanism is arranged on the base, and a soil sampling cylinder is threadedly connected to the trigger-type soil sampling mechanism. The trigger-type anti-detachment mechanism is arranged on the soil sampling cylinder. An adjustment chute is arranged on the base, and the depth adjustment auxiliary mechanism is slidably connected to the adjustment chute. The leveling and fixing component is arranged at the bottom of the base. An opening is provided at the bottom of the soil sampling cylinder. The soil sampling cylinder is successively provided with an arc-shaped trigger cavity, a closed control cavity, and a closed cavity from top to bottom. A closed opening is provided at the bottom of the soil sampling cylinder, and the closed opening is communicated with the closed cavity.

[0006] Further, the trigger-type soil sampling mechanism includes a driving cavity, a soil sampling driving gear, a soil sampling motor, and a soil sampling driven tooth ring. The driving cavity is arranged inside the base. A soil sampling rotation chute is arranged inside the driving cavity. The soil sampling driving gear is rotatably arranged inside the driving cavity. The soil sampling motor is arranged on the base, and the output end of the soil sampling motor is coaxially fixedly connected to the soil sampling driving gear. The soil sampling driven tooth ring is rotatably arranged on the soil sampling rotation chute and is arranged inside the driving cavity. The soil sampling driven tooth ring is meshed with the soil sampling driving gear. An internal thread is provided on the inner side wall of the soil sampling driven tooth ring, and an external thread is provided on the outer side wall of the soil sampling cylinder. The internal thread and the external thread are threadedly connected.

[0007] Further, the depth adjustment auxiliary mechanism includes a depth setting bar, a depth adjustment screw rod, a depth adjustment driving bevel gear, a depth adjustment driven bevel gear, a depth adjustment knob, a depth adjustment sliding seat, and a depth adjustment fixing bolt. The depth setting bar is slidably connected to the adjustment chute. A depth adjustment sliding hole is provided on one side of the depth setting bar close to the soil sampling cylinder. The depth adjustment screw rod is rotatably arranged inside the depth setting bar. The depth adjustment driving bevel gear is rotatably arranged inside the depth setting bar. The depth adjustment driven bevel gear is rotatably arranged inside the depth setting bar. The depth adjustment driven bevel gear is coaxially fixedly connected to the depth adjustment screw rod. The depth adjustment driven bevel gear is meshed with the depth adjustment driving bevel gear. The depth adjustment knob is rotatably arranged outside the depth setting bar, and the depth adjustment knob is coaxially fixedly connected to the depth adjustment driving bevel gear. One end of the depth adjustment sliding seat is threadedly connected to the depth adjustment screw rod. The other end of the depth adjustment sliding seat slidably penetrates through the depth adjustment sliding hole and extends outside the depth setting bar. A fixing collar is provided at the end of the depth adjustment sliding seat far from the depth setting bar. A fixing chute is provided on the outer side wall of the soil sampling cylinder, and a scale is provided on the fixing chute. A positioning trigger block is provided on the fixing collar. The fixing collar is sleeved on the soil sampling cylinder. A fixing slider is provided on the inner side wall of the fixing collar. The fixing slider is slidably connected to the fixing chute. The depth adjustment fixing bolt is threadedly connected to the base and contacts the depth setting bar.

[0008] Further, the trigger type anti - shedding mechanism includes a closing component and a trigger component. The closing component is arranged in the closing control cavity and the closing cavity, and the trigger component is arranged in the arc - shaped trigger cavity.

[0009] Preferably, the closing component includes a closing blade, a closing control chute, a closing control gear ring and a closing control gear. The closing blades are evenly distributed in an array and rotatably arranged in the closing cavity. The closing control chute is arranged in the closing control cavity. The closing control gear ring is slidably connected to the closing control chute and is arranged in the closing control cavity. The closing control gears are distributed in an array and rotatably arranged in the closing control cavity. The closing control gears are meshed with the closing control gear ring, and the closing control gears are coaxially fixed to the closing blades.

[0010] As a further improvement of this solution, the trigger component includes an arc - shaped trigger chute, an arc - shaped trigger slide hole, an arc - shaped trigger rack, a trigger gear, a traction wheel, an elastic traction rope, a trigger slot, a trigger rod, a trigger spring, a trigger groove, a trigger plate and a trigger block. The arc - shaped trigger chute is arranged in the arc - shaped trigger cavity. The arc - shaped trigger slide hole is arranged on the outer side wall of the soil sampling cylinder body, and the arc - shaped trigger slide hole is communicated with the arc - shaped trigger cavity. The arc - shaped trigger rack is slidably connected to the arc - shaped trigger chute and is arranged in the arc - shaped trigger cavity. The trigger gear is rotatably arranged in the arc - shaped trigger cavity. The trigger gear is meshed with the arc - shaped trigger rack, and the trigger gear is coaxially fixed to the closing control gear. The traction wheels are evenly distributed in an array in the arc - shaped trigger cavity. The elastic traction rope is wound around the traction wheels. One end of the elastic traction rope is arranged on the arc - shaped trigger rack, and the other end of the elastic traction rope is arranged on the side wall of the arc - shaped trigger cavity. The trigger slot is arranged on the arc - shaped trigger rack. One end of the trigger rod is inserted and connected to the trigger slot, and the other end of the trigger rod slides through the arc - shaped trigger slide hole and extends outside the arc - shaped trigger cavity. A trigger head is arranged at the end of the trigger rod far from the arc - shaped trigger rack, and the trigger head is arranged outside the soil sampling cylinder. The trigger spring is arranged between the trigger slot and the trigger rod. The trigger groove is arranged on the side wall of the arc - shaped trigger cavity near the trigger head. The trigger plate is arranged on the trigger rod and is arranged in the arc - shaped trigger cavity. The trigger block is arranged on the side of the trigger plate near the trigger head, and the trigger block is clamped and connected to the trigger groove.

[0011] Aiming at the technical problems of the difficulty in accurately controlling the sampling depth caused by the method of manually rotating the soil sampler to take soil in the prior art, and the technical problem that some soil falls out of the soil sampler during soil lifting in the prior art, this solution realizes the technical effect of accurately controlling the sampling depth only through a simple mechanical structure without any sensors by using the depth adjustment auxiliary mechanism and the trigger-type anti-falling mechanism in combination. Before use, the sampling depth is determined by the depth adjustment auxiliary mechanism. When the specified depth is reached, the trigger-type anti-falling mechanism automatically seals the closed port. During soil lifting, since the closed port is in a closed state, the technical problem of the soil sample falling out of the soil sampler during soil lifting is solved, ensuring the accuracy of the sampling result.

[0012] As a further improvement of this solution, a fixed card slot is provided at the top of the soil sampling cylinder body. An inner cylinder body is slidably inserted and connected to the soil sampling cylinder body. A fixed clamping block is provided on the inner cylinder body, and the fixed clamping block is engaged with the fixed card slot. A fixed cover is threadedly connected to the top of the soil sampling cylinder body, and the fixed cover covers the top of the inner cylinder body and is in contact with the top of the inner cylinder body. The inner cylinder body includes a first semi-cylinder and a second semi-cylinder. An engaging clamping block is provided on the first semi-cylinder, and an engaging card slot is provided on the second semi-cylinder. The engaging clamping block is engaged with the engaging card slot.

[0013] Aiming at the technical problems of the original structure of the soil being damaged, the undisturbed soil not being able to be taken out, and the soil of different soil layers being mixed together caused by the existing soil sampling methods, this solution realizes that it is convenient for users to quickly obtain undisturbed soil by using the trigger-type soil sampling mechanism in combination with a simple detachable structure. Compared with the method of pouring the soil sample out of the soil sampler in the prior art, this solution does not damage the original structure of the soil sample during soil sampling, can obtain undisturbed soil, which is convenient for subsequent detection, and when taking soil in this way, the soil of different soil layers will not be mixed together, which is convenient for detecting the soil components at different depths.

[0014] Preferably, the leveling and fixing assembly includes a leveling sleeve, a leveling sleeve column, a placement plate, a pointed insertion rod, a convex block, and a tightening bolt. The leveling sleeves are symmetrically provided at the bottom of the base. The leveling sleeve is arranged as a cavity with an open lower end. A leveling sliding groove is provided inside the leveling sleeve. The leveling sleeve column is inserted and connected to the lower end of the leveling sleeve, and the leveling sleeve column is slidably connected to the leveling sliding groove. The placement plate is provided at the bottom of the leveling sleeve column. The pointed insertion rod is provided at the bottom of the placement plate. The convex blocks are arranged in an array at the bottom of the placement plate. The tightening bolt is threadedly connected to the leveling sleeve and is in contact with the leveling sleeve column.

[0015] Aiming at the technical problem that it is difficult to take samples in the vertical direction due to the mostly uneven ground in the soil sampling area, this solution realizes the technical effect of taking samples in the vertical direction by setting a leveling and fixing assembly to level the sampling equipment.

[0016] In view of the technical problem that the sampling device is not firmly fixed, which affects the sampling process, before fixing the sampling device, the pointed insertion rod is inserted into the soil, and the convex block is in direct contact with the ground. Among them, the convex block can increase the friction between the soil sampling device and the ground. Through the combined use of the pointed insertion rod and the convex block, it helps to maintain the stability during the soil sampling process and is conducive to the smooth progress of the soil sampling process.

[0017] Preferably, a controller and a storage battery are provided on the base. The storage battery is electrically connected to the controller and the soil sampling motor respectively. The soil sampling cylinder is coaxially arranged with the soil sampling driven gear ring.

[0018] In view of the technical problems of time-consuming, laborious and low efficiency caused by the existing method of manually using a soil drill for soil sampling, this solution samples the soil through the combined use of a trigger-type soil sampling mechanism and a controller, and has the advantages of time-saving, labor-saving and high soil sampling efficiency.

[0019] Among them, there are four groups of the leveling and fixing components, and the number of the closing control gears is the same as that of the closing blades and they correspond one by one.

[0020] The beneficial effects achieved by the present invention adopting the above structure are as follows:

[0021] (1) In view of the technical problem that it is difficult to accurately control the sampling depth caused by the existing method of manually rotating a soil drill for soil sampling, and in view of the technical problem that some soil falls from the soil drill during soil lifting in the prior art, this solution realizes the technical effect of accurately controlling the sampling depth only through a simple mechanical structure without any sensors through the combined use of a depth adjustment auxiliary mechanism and a trigger-type anti-falling mechanism. Before use, the sampling depth is determined by the depth adjustment auxiliary mechanism. When the specified depth is reached, the trigger-type anti-falling mechanism automatically closes the closed port. When lifting the soil, since the closed port is in a closed state, the technical problem that the soil sample falls from the soil drill during soil lifting is solved, and the accuracy of the sampling result is ensured.

[0022] (2) In view of the technical problems that the existing soil sampling methods cause damage to the original structure of the soil, it is impossible to take undisturbed soil and the soil of different soil layers will be mixed together, this solution is used in combination with a trigger-type soil sampling mechanism and a simple detachable structure, which is convenient for users to quickly obtain undisturbed soil. Compared with the method of pouring the soil sample out of the soil drill in the prior art, this solution will not damage the original structure of the soil sample during soil sampling, can obtain undisturbed soil, which is convenient for subsequent detection, and when using this method for soil sampling, the soil of different soil layers will not be mixed together, which is convenient for detecting the soil components at different depths.

[0023] (3) Aiming at the technical problem that it is difficult to sample in the vertical direction due to the mostly uneven ground in the soil-taking area, this solution levels the sampling equipment by setting up a leveling and fixing component, achieving the technical effect of sampling in the vertical direction.

[0024] (4) Aiming at the technical problem that the instability of the sampling equipment affects the sampling process, before fixing the sampling equipment, insert the pointed insertion rod into the soil and make the convex block directly contact the ground. Among them, the convex block can increase the friction between the soil-taking equipment and the ground. The combined use of the pointed insertion rod and the convex block helps to maintain the stability during the soil-taking process and is conducive to the smooth progress of the soil-taking process.

[0025] (5) Aiming at the technical problem of time-consuming, laborious and low efficiency caused by the existing method of manually using a soil drill to take soil, this solution samples the soil through the combined use of a trigger-type soil-taking mechanism and a controller, with the advantages of time-saving, labor-saving and high soil-taking efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the trigger-type undisturbed soil fixed-depth sampling equipment for geological disaster detection provided by the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the trigger-type undisturbed soil fixed-depth sampling equipment for geological disaster detection provided by the present invention;

[0028] Figure 3 It is a top view of the trigger-type undisturbed soil fixed-depth sampling equipment for geological disaster detection provided by the present invention;

[0029] Figure 4 It is a front view of the trigger-type undisturbed soil fixed-depth sampling equipment for geological disaster detection provided by the present invention;

[0030] Figure 5 It is Figure 4 The cross-sectional view of part a-a in

[0031] Figure 6 It is Figure 4 The cross-sectional view of part b-b in

[0032] Figure 7 It is Figure 4 The cross-sectional view of part c-c in

[0033] Figure 8 It is Figure 4 The cross-sectional view of part d-d in

[0034] Figure 9 It is Figure 4 The cross-sectional view of part e-e in

[0035] Figure 10 is Figure 7 a partial enlarged schematic view of part A in

[0036] Figure 11 is Figure 8 a partial enlarged schematic view of part B in

[0037] Figure 12 is Figure 9 a partial enlarged schematic view of part C in

[0038] Figure 13 is Figure 3 a sectional view of the f-f part in

[0039] Figure 14 is Figure 3 a sectional view of the g-g part in

[0040] Figure 15 is Figure 3 a sectional view of the h-h part in

[0041] Figure 16 is Figure 3 a sectional view of the i-i part in

[0042] Figure 17 is Figure 13 a partial enlarged schematic view of part D in

[0043] Figure 18 is Figure 13 a partial enlarged schematic view of part E in

[0044] Figure 19 is Figure 15 a partial enlarged schematic view of part F in

[0045] Among them, 1000, base; 2000, triggering soil sampling mechanism; 2001, driving cavity; 2002, soil sampling driving gear; 2003, soil sampling motor; 2004, soil sampling driven gear ring; 2005, soil sampling cylinder; 2006, soil sampling rotating chute; 2007, internal thread; 2008, external thread; 2009, opening; 2010, fixed card slot; 2011, inner cylinder; 2012, fixed cover; 2013, fixed clamping block; 2014, first semi-cylinder; 2015, second semi-cylinder; 2016, fitting clamping block; 2017, fitting card slot; 3000, triggering anti-detachment mechanism; 3100, closing component; 3101, closing control cavity; 3102, closing cavity; 3103, closing opening; 3104, closing blade; 3105, closing control chute; 3106, closing control gear ring; 3107, closing control gear; 3200, triggering component; 3201, arc-shaped triggering cavity; 3202, arc-shaped triggering chute; 3203, arc-shaped triggering slide hole; 3204, arc-shaped triggering rack; 3205, triggering gear; 3206, traction wheel; 3207, elastic traction rope; 3208, triggering slot; 3209, triggering rod; 3214, triggering head; 3210, triggering spring; 3211, triggering groove; 3212, triggering plate; 3213, triggering clamping block; 4000, depth adjustment auxiliary mechanism; 4001, depth setting bar; 4002, depth adjustment screw rod; 4003, depth adjustment driving bevel gear; 4004, depth adjustment driven bevel gear; 4005, depth adjustment knob; 4006, depth adjustment sliding seat; 4007, fixed collar; 4008, adjustment chute; 4009, depth adjustment fixing bolt; 4010, scale; 4011, depth adjustment slide hole; 4012, fixed chute; 4013, fixed slider; 4014, positioning triggering block; 5000, leveling and fixing component; 5001, leveling sleeve; 5002, leveling sleeve column; 5003, placing plate; 5004, pointed insertion rod; 5005, convex block; 5006, leveling chute; 5007, tightening bolt; 7001, controller; 7002, storage battery.

[0046] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0049] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 17 and Figure 19 As shown in

[0050] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16, the depth adjustment auxiliary mechanism 4000 includes a depth setting bar 4001, a depth adjustment lead screw 4002, a depth adjustment driving bevel gear 4003, a depth adjustment driven bevel gear 4004, a depth adjustment knob 4005, a depth adjustment slide block 4006, and a depth adjustment fixing bolt 4009. The depth setting bar 4001 is slidably connected to the adjustment chute 4008. On one side of the depth setting bar 4001 close to the soil sampling cylinder 2005, there is a depth adjustment slide hole 4011. The depth adjustment lead screw 4002 is rotatably arranged inside the depth setting bar 4001. The depth adjustment driving bevel gear 4003 is rotatably arranged inside the depth setting bar 4001. The depth adjustment driven bevel gear 4004 is rotatably arranged inside the depth setting bar 4001. The depth adjustment driven bevel gear 4004 is coaxially fixed to the depth adjustment lead screw 4002. The depth adjustment driven bevel gear 4004 is meshed with the depth adjustment driving bevel gear 4003. The depth adjustment knob 4005 is rotatably arranged outside the depth setting bar 4001. The depth adjustment knob 4005 is coaxially fixed to the depth adjustment driving bevel gear 4003. One end of the depth adjustment slide block 4006 is threadedly connected to the depth adjustment lead screw 4002. The other end of the depth adjustment slide block 4006 slidably penetrates through the depth adjustment slide hole 4011 and extends outside the depth setting bar 4001. On one end of the depth adjustment slide block 4006 away from the depth setting bar 4001, there is a fixing collar 4007. On the outer side wall of the soil sampling cylinder 2005, there is a fixing chute 4012. On the fixing chute 4012, there is a scale 4010. On the fixing collar 4007, there is a positioning trigger block 4014. The fixing collar 4007 is sleeved on the soil sampling cylinder 2005. On the inner side wall of the fixing collar 4007, there is a fixing slider 4013. The fixing slider 4013 is slidably connected to the fixing chute 4012. The depth adjustment fixing bolt 4009 is threadedly connected to the base 1000 and contacts the depth setting bar 4001.

[0051] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 and Figure 19, the trigger-type soil sampling mechanism 2000 includes a drive cavity 2001, a soil sampling drive gear 2002, a soil sampling motor 2003, and a soil sampling driven gear ring 2004. The drive cavity 2001 is provided in the base 1000. A soil sampling rotary chute 2006 is provided in the drive cavity 2001. The soil sampling drive gear 2002 is rotatably provided in the drive cavity 2001. The soil sampling motor 2003 is provided on the base 1000, and the output end of the soil sampling motor 2003 is coaxially fixed to the soil sampling drive gear 2002. The soil sampling driven gear ring 2004 is rotatably provided on the soil sampling rotary chute 2006. The soil sampling driven gear ring 2004 is provided in the drive cavity 2001, and the soil sampling driven gear ring 2004 is meshed with the soil sampling drive gear 2002. An internal thread 2007 is provided on the inner side wall of the soil sampling driven gear ring 2004, and an external thread 2008 is provided on the outer side wall of the soil sampling cylinder 2005. The internal thread 2007 and the external thread 2008 are threadedly connected. The soil sampling cylinder 2005 and the soil sampling driven gear ring 2004 are coaxially arranged.

[0052] Refer to Figure 1 , Figure 17 and Figure 19 , the trigger-type anti-detachment mechanism 3000 includes a closing assembly 3100 and a trigger assembly 3200. The closing assembly 3100 is provided in a closing control cavity 3101 and a closing cavity 3102. The trigger assembly 3200 is provided in an arc-shaped trigger cavity 3201.

[0053] Refer to Figure 11 , Figure 12 and Figure 17 , the closing assembly 3100 includes closing blades 3104, a closing control chute 3105, a closing control gear ring 3106, and a closing control gear 3107. The closing blades 3104 are evenly distributed in an array and rotatably provided in the closing cavity 3102. The closing control chute 3105 is provided in the closing control cavity 3101. The closing control gear ring 3106 is slidably connected to the closing control chute 3105. The closing control gear ring 3106 is provided in the closing control cavity 3101. The closing control gears 3107 are distributed in an array and rotatably provided in the closing control cavity 3101. The closing control gears 3107 are meshed with the closing control gear ring 3106. The closing control gears 3107 are coaxially fixed to the closing blades 3104.

[0054] Refer to Figure 10 , Figure 11 , Figure 12 and Figure 17, the trigger assembly 3200 includes an arc-shaped trigger chute 3202, an arc-shaped trigger slide hole 3203, an arc-shaped trigger rack 3204, a trigger gear 3205, a traction wheel 3206, an elastic traction rope 3207, a trigger slot 3208, a trigger rod 3209, a trigger spring 3210, a trigger groove 3211, a trigger plate 3212, and a trigger block 3213. The arc-shaped trigger chute 3202 is provided in the arc-shaped trigger cavity 3201. The arc-shaped trigger slide hole 3203 is provided on the outer side wall of the soil collection cylinder 2005. The arc-shaped trigger slide hole 3203 is in communication with the arc-shaped trigger cavity 3201. The arc-shaped trigger rack 3204 is slidably connected to the arc-shaped trigger chute 3202 and is provided in the arc-shaped trigger cavity 3201. The trigger gear 3205 is rotatably provided in the arc-shaped trigger cavity 3201. The trigger gear 3205 is meshed with the arc-shaped trigger rack 3204. The trigger gear 3205 is coaxially fixed to the closing control gear 3107. The traction wheels 3206 are evenly distributed in an array in the arc-shaped trigger cavity 3201. The elastic traction rope 3207 is wound around the traction wheels 3206. One end of the elastic traction rope 3207 is provided on the arc-shaped trigger rack 3204, and the other end of the elastic traction rope 3207 is provided on the side wall of the arc-shaped trigger cavity 3201. The trigger slot 3208 is provided on the arc-shaped trigger rack 3204. One end of the trigger rod 3209 is inserted and connected to the trigger slot 3208. The other end of the trigger rod 3209 slides through the arc-shaped trigger slide hole 3203 and extends outside the arc-shaped trigger cavity 3201. A trigger head 3214 is provided at the end of the trigger rod 3209 far from the arc-shaped trigger rack 3204. The trigger head 3214 is provided outside the soil collection cylinder 2005. The trigger spring 3210 is provided between the trigger slot 3208 and the trigger rod 3209. The trigger groove 3211 is provided on the side wall of the arc-shaped trigger cavity 3201 near the trigger head 3214. The trigger plate 3212 is provided on the trigger rod 3209 and is provided in the arc-shaped trigger cavity 3201. The trigger block 3213 is provided on the side of the trigger plate 3212 near the trigger head 3214. The trigger block 3213 is clamped and connected to the trigger groove 3211.

[0055] See Figure 1 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Figure 9 , Figure 13 , Figure 14 , Figure 15 and Figure 16, the leveling and fixing assembly 5000 includes a leveling sleeve 5001, a leveling sleeve post 5002, a placement plate 5003, a pointed insertion rod 5004, a convex block 5005 and a tightening bolt 5007. The leveling sleeves 5001 are symmetrically arranged at the bottom of the base 1000. The leveling sleeve 5001 is arranged as a cavity with an open lower end. A leveling smooth groove 5006 is provided inside the leveling sleeve 5001. The leveling sleeve post 5002 is inserted and connected at the lower end of the leveling sleeve 5001, and the leveling sleeve post 5002 is slidably connected with the leveling smooth groove 5006. The placement plate 5003 is arranged at the bottom of the leveling sleeve post 5002. The pointed insertion rod 5004 is arranged at the bottom of the placement plate 5003. The convex blocks 5005 are arranged in an array at the bottom of the placement plate 5003. The tightening bolt 5007 is threadedly connected to the leveling sleeve 5001 and contacts the leveling sleeve post 5002.

[0056] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 , Figure 16 and Figure 19 , a fixing card slot 2010 is provided at the top of the soil sampling cylinder 2005. An inner cylinder 2011 is slidably inserted and connected to the soil sampling cylinder 2005. A fixing block 2013 is provided on the inner cylinder 2011. The fixing block 2013 is engaged with the fixing card slot 2010. A fixing cover 2012 is threadedly connected to the top of the soil sampling cylinder 2005. The fixing cover 2012 covers the top of the inner cylinder 2011, and the fixing cover 2012 contacts the top of the inner cylinder 2011. The inner cylinder 2011 includes a half cylinder one 2014 and a half cylinder two 2015. A fitting block 2016 is provided on the half cylinder one 2014. A fitting card slot 2017 is provided on the half cylinder two 2015. The fitting block 2016 is engaged with the fitting card slot 2017. A controller 7001 and a storage battery 7002 are provided on the base 1000. The storage battery 7002 is electrically connected to the controller 7001 and the soil sampling motor 2003 respectively. Four groups of the leveling and fixing assemblies 5000 are provided, and the number of the closing control gears 3107 is the same as that of the closing blades 3104 and they are in one-to-one correspondence.

[0057] During specific use, before sampling, the soil sampling device needs to be fixed on the ground. First, the user places the soil sampling device on the ground where soil is to be sampled and inserts the pointed insertion rod 5004 into the soil, so that the convex block 5005 at the bottom of the placement plate 5003 is in direct contact with the ground. Among them, the convex block 5005 can increase the friction between the soil sampling device and the ground. Through the combined use of the pointed insertion rod 5004 and the convex block 5005, it helps to maintain the stability during the soil sampling process and is conducive to the smooth progress of the soil sampling process. The ground to be sampled is mostly uneven. After placement, the user adjusts the four groups of leveling and fixing components 5000 respectively to level the soil sampling device. First, the user screws out the tightening bolt 5007 outward, so that the leveling sleeve 5001 and the leveling sleeve column 5002 change from the tightly fixed state to the movable state. Then, the user adjusts the lengths of the multiple groups of leveling sleeve columns 5002 extending out of the leveling sleeve 5001 according to the unevenness of the ground, so as to level the soil sampling device. Then, the user screws the tightening bolt 5007 back to its original position, so that the leveling sleeve 5001 and the leveling sleeve column 5002 change from the movable state to the tightly fixed state. By performing the above operations, the technical effect of sampling in the vertical direction is achieved, ensuring the accuracy of sampling;To accurately control the sampling depth, the user controls the soil sampling depth through the combined use of the depth adjustment auxiliary mechanism 4000 and the trigger-type anti-drop-off mechanism 3000. After the soil sampling device is fixed, first, the user starts the soil sampling motor 2003 through the controller 7001. The soil sampling motor 2003 drives the soil sampling drive gear 2002 to rotate. The soil sampling drive gear 2002 drives the soil sampling driven gear ring 2004 to rotate through gear transmission. The soil sampling driven gear ring 2004 drives the internal thread 2007 to rotate. The internal thread 2007 drives the external thread 2008 that is threadedly connected to the internal thread 2007 to move. The external thread 2008 drives the soil sampling cylinder 2005 to move. At the same time, since the fixed slider 4013 on the fixed collar 4007 slides on the fixed chute 4012 on the soil sampling cylinder 2005, under the combined action of the rotating internal thread 2007 and the fixed slider 4013, the soil sampling cylinder 2005 moves downward along the vertical direction and gradually approaches the ground until it abuts against the ground. After that, the user adjusts the soil sampling depth with reference to the scale 4010 on the fixed chute 4012. The user rotates the depth adjustment knob 4005. The depth adjustment knob 4005 drives the depth adjustment drive bevel gear 4003 to rotate. The depth adjustment drive bevel gear 4003 drives the depth adjustment driven bevel gear 4004 to rotate through gear transmission. The depth adjustment driven bevel gear 4004 drives the depth adjustment screw rod 4002 to rotate. The depth adjustment screw rod 4002 drives the depth adjustment slider 4006 to move upward or downward along the depth setting bar 4001. The depth adjustment slider 4006 drives the fixed collar 4007 to move upward or downward, thereby driving the positioning trigger block 4014 to move upward or downward. During this process, the user adjusts the position of the positioning trigger block 4014 with reference to the scale 4010, thereby realizing the adjustment of the soil sampling depth. When the specified soil sampling depth is adjusted, the user stops rotating the depth adjustment knob 4005. By setting the combined use of the trigger-type anti-drop-off mechanism 3000 and the depth adjustment auxiliary mechanism 4000, the user not only accurately controls the soil sampling depth but also solves the technical problem that the detection result is affected by the soil falling from the soil sampling cylinder 2005. Before soil sampling, the user adjusts the trigger-type anti-drop-off mechanism 3000 to as; Figure 10 , 11, the initial state shown in 12, 17, 18, and 19. After that, the user starts the soil-taking motor 2003 through the controller 7001. The soil-taking motor 2003 drives the soil-taking drive gear 2002 to rotate. The soil-taking drive gear 2002 drives the soil-taking driven tooth ring 2004 to rotate through gear transmission. The soil-taking driven tooth ring 2004 drives the internal thread 2007 to rotate. The internal thread 2007 drives the external thread 2008 that is threadedly connected to the internal thread 2007 to move. The external thread 2008 drives the soil-taking cylinder 2005 to move. At the same time, since the fixed slider 4013 on the fixed collar 4007 slides on the fixed chute 4012 on the soil-taking cylinder 2005, under the combined action of the rotating internal thread 2007 and the fixed slider 4013, the soil-taking cylinder 2005 moves downward along the vertical direction and gradually inserts into the soil layer in the sampling area. As the soil-taking cylinder 2005 continuously inserts into the soil layer, the soil in the sampling area enters the inner cylinder 2011 through the opening 2009 at the bottom of the soil-taking cylinder 2005. During the continuous downward movement of the soil-taking cylinder 2005, the soil continuously enters the inner cylinder 2011, and the trigger head 3214 moves downward and gradually approaches the positioning trigger block 4014 on the fixed collar 4007. When the soil-taking cylinder 2005 moves down to the specified depth, the trigger head 3214 moves away from the fixed collar 4007 under the extrusion of the positioning trigger block 4014. The trigger head 3214 drives the trigger rod 3209 to move away from the fixed collar 4007, causing the trigger spring 3210 to be elastically compressed and deformed. The trigger rod 3209 drives the trigger plate 3212 to move away from the trigger groove 3211. The trigger plate 3212 drives the trigger block 3213 to disengage from the trigger groove 3211. Under the elastic recovery action of the elastic traction rope 3207, the elastic traction rope 3207 drives the arc-shaped trigger rack 3204 to perform a circular motion around the axis of the soil-taking cylinder 2005 along the arc-shaped trigger chute 3202 in a direction away from the positioning trigger block 4014. During this process, the arc-shaped trigger rack 3204 drives the trigger gear 3205 to rotate through gear transmission. The trigger gear 3205 drives a set of closed control gears 3107 coaxially fixed to the trigger gear 3205 to rotate. The closed control gear 3107 drives the closed control tooth ring 3106 to perform a circular motion around the axis of the soil-taking cylinder 2005 along the closed control chute 3105 through gear transmission, thereby driving several sets of closed control gears 3107 to rotate synchronously. Several sets of closed control gears 3107 drive several sets of closed blades 3104 to rotate, making the original state as shown in Figure 14A plurality of sets of closing blades 3104 in the initial state shown rotate counterclockwise, so that the closing opening 3103 is closed by the plurality of sets of closing blades 3104. By performing the above operations, when reaching the soil sampling position at the specified depth and obtaining the soil sample at the specified depth, the closing opening 3103 is automatically closed, preventing the deeper soil from entering the soil sampling cylinder 2005, achieving the technical effect of soil sampling at the specified depth, ensuring the accuracy of the detection. After the closing opening 3103 is closed, the user controls the soil sampling motor 2003 to rotate in the reverse direction through the controller 7001, so that the soil sampling cylinder 2005 is lifted out of the soil layer. At this time, since the closing opening 3103 is in a closed state, the technical problem of the soil sample falling out of the soil sampling cylinder 2005 is solved, ensuring the accuracy of the detection result; To obtain undisturbed soil, during the soil lifting process, as the soil sampling motor 2003 rotates in the reverse direction, the soil sampling cylinder 2005 continuously moves upward in the vertical direction until it completely disengages from the trigger-type soil sampling mechanism 2000. At this time, the user removes the soil sampling cylinder 2005 from the sampling device, places the soil sampling cylinder 2005 upside down on the ground, unscrews the fixing cover 2012 from the top of the soil sampling cylinder 2005, pulls out the inner cylinder 2011 from the soil sampling cylinder 2005, and separates the semi-cylinder one 2014 and the semi-cylinder two 2015 that were originally in a clamped connection state, thereby obtaining undisturbed soil. Compared with the method of pouring the soil sample out of the soil drill in the prior art, this solution does not damage the original structure of the soil sample during the soil sampling process and can obtain undisturbed soil, which is convenient for subsequent detection; At the same time, this device has the function of being easy to install and disassemble. After the soil sampling is completed, the user unscrews the depth adjustment fixing bolt 4009 outward, so that the depth setting bar 4001 and the adjustment chute 4008 change from the tightly pressed and fixed state to the movable state. Then, the user removes the depth setting bar 4001 along the adjustment chute 4008. By disassembling this device, it is convenient for the user to transport and store this device; During installation, the user places the depth setting bar 4001 back into the adjustment chute 4008 and screws the depth adjustment fixing bolt 4009 back to its original position, so that the depth setting bar 4001 and the adjustment chute 4008 change from the movable state to the tightly pressed and fixed state. Then, the user inserts the soil sampling cylinder 2005 vertically from above the fixed collar 4007, and snaps the fixed slider 4013 on the fixed collar 4007 into the fixed chute 4012 until the external thread 2008 at the lower end of the soil sampling cylinder 2005 contacts the internal thread 2007 on the soil sampling driven gear ring 2004. Then, the user starts 2003, so that the lower end of the soil sampling cylinder 2005 gradually moves down to below the base 1000. By performing the above operations, the user can quickly install this device, saving time and improving efficiency.

[0058] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0059] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0060] The above description of the present invention and its embodiments is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they should all fall within the protection scope of the present invention.

Claims

1. A trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection, characterized in that: It includes a base (1000), a trigger type soil sampling mechanism (2000), a trigger type anti - shedding mechanism (3000), a depth adjustment auxiliary mechanism (4000) and a leveling and fixing component (5000). The trigger type soil sampling mechanism (2000) is arranged on the base (1000). A soil sampling cylinder (2005) is threadedly connected to the trigger type soil sampling mechanism (2000). The trigger type anti - shedding mechanism (3000) is arranged on the soil sampling cylinder (2005). An adjustment chute (4008) is provided on the base (1000). The depth adjustment auxiliary mechanism (4000) is slidably connected to the adjustment chute (4008). The leveling and fixing component (5000) is arranged at the bottom of the base (1000). An opening (2009) is provided at the bottom of the soil sampling cylinder (2005). The soil sampling cylinder (2005) is successively provided with an arc - shaped trigger cavity (3201), a closed control cavity (3101) and a closed cavity (3102) from top to bottom. A closed port (3103) is provided at the bottom of the soil sampling cylinder (2005). The closed port (3103) is communicated with the closed cavity (3102). The trigger type anti - shedding mechanism (3000) includes a closing component (3100) and a trigger component (3200). The closing component (3100) is arranged in the closed control cavity (3101) and the closed cavity (3102). The trigger component (3200) is arranged in the arc - shaped trigger cavity (3201).

2. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 1, wherein: The closing component (3100) includes a closing blade (3104), a closed control chute (3105), a closed control gear ring (3106) and a closed control gear (3107). The closing blades (3104) are evenly distributed in an array and rotatably arranged in the closed cavity (3102). The closed control chute (3105) is arranged in the closed control cavity (3101). The closed control gear ring (3106) is slidably connected to the closed control chute (3105). The closed control gear ring (3106) is arranged in the closed control cavity (3101). The closed control gears (3107) are distributed in an array and rotatably arranged in the closed control cavity (3101). The closed control gears (3107) are meshed with the closed control gear ring (3106). The closed control gears (3107) are coaxially fixed to the closing blades (3104).

3. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 2, characterized in that: The trigger assembly (3200) includes an arc-shaped trigger chute (3202), an arc-shaped trigger slide hole (3203), an arc-shaped trigger rack (3204), a trigger gear (3205), a traction wheel (3206), an elastic traction rope (3207), a trigger slot (3208), a trigger rod (3209), a trigger spring (3210), a trigger groove (3211), a trigger plate (3212), and a trigger block (3213). The arc-shaped trigger chute (3202) is arranged in the arc-shaped trigger cavity (3201). The arc-shaped trigger slide hole (3203) is arranged on the outer side wall of the soil collection cylinder (2005). The arc-shaped trigger slide hole (3203) is communicated with the arc-shaped trigger cavity (3201). The arc-shaped trigger rack (3204) is slidably connected to the arc-shaped trigger chute (3202) and is arranged in the arc-shaped trigger cavity (3201). The trigger gear (3205) is rotatably arranged in the arc-shaped trigger cavity (3201). The trigger gear (3205) is meshed with the arc-shaped trigger rack (3204). The trigger gear (3205) is coaxially fixed to the closing control gear (3107). The traction wheels (3206) are evenly distributed in an array in the arc-shaped trigger cavity (3201). The elastic traction rope (3207) is wound around the traction wheels (3206). One end of the elastic traction rope (3207) is arranged on the arc-shaped trigger rack (3204), and the other end of the elastic traction rope (3207) is arranged on the side wall of the arc-shaped trigger cavity (3201). The trigger slot (3208) is arranged on the arc-shaped trigger rack (3204). One end of the trigger rod (3209) is inserted and connected to the trigger slot (3208). The other end of the trigger rod (3209) slidably penetrates through the arc-shaped trigger slide hole (3203) and extends outside the arc-shaped trigger cavity (3201). A trigger head (3214) is arranged at the end of the trigger rod (3209) far from the arc-shaped trigger rack (3204). The trigger head (3214) is arranged outside the soil collection cylinder (2005). The trigger spring (3210) is arranged between the trigger slot (3208) and the trigger rod (3209). The trigger groove (3211) is arranged on the side wall of the arc-shaped trigger cavity (3201) near the trigger head (3214). The trigger plate (3212) is arranged on the trigger rod (3209) and is arranged in the arc-shaped trigger cavity (3201). The trigger block (3213) is arranged on the side of the trigger plate (3212) near the trigger head (3214). The trigger block (3213) is clamped and connected to the trigger groove (3211).

4. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 3, characterized in that: The depth adjustment auxiliary mechanism (4000) includes a depth setting bar (4001), a depth adjustment lead screw (4002), a depth adjustment driving bevel gear (4003), a depth adjustment driven bevel gear (4004), a depth adjustment knob (4005), a depth adjustment slide seat (4006) and a depth adjustment fixing bolt (4009). The depth setting bar (4001) is slidably connected to the adjustment chute (4008). A scale (4010) is provided on the side wall of the depth setting bar (4001) away from the soil sampling cylinder (2005). A depth adjustment slide hole (4011) is provided on the side of the depth setting bar (4001) close to the soil sampling cylinder (2005). The depth adjustment lead screw (4002) is rotatably arranged in the depth setting bar (4001). The depth adjustment driving bevel gear (4003) is rotatably arranged in the depth setting bar (4001). The depth adjustment driven bevel gear (4004) is rotatably arranged in the depth setting bar (4001). The depth adjustment driven bevel gear (4004) is coaxially fixed to the depth adjustment lead screw (4002). The depth adjustment driven bevel gear (4004) is meshed with the depth adjustment driving bevel gear (4003). The depth adjustment knob (4005) is rotatably arranged outside the depth setting bar (4001). The depth adjustment knob (4005) is coaxially fixed to the depth adjustment driving bevel gear (4003). One end of the depth adjustment slide seat (4006) is threadedly connected to the depth adjustment lead screw (4002). The other end of the depth adjustment slide seat (4006) slidably penetrates through the depth adjustment slide hole (4011) and extends outside the depth setting bar (4001). A fixing collar (4007) is provided at the end of the depth adjustment slide seat (4006) away from the depth setting bar (4001). A fixing chute (4012) is provided on the outer side wall of the soil sampling cylinder (2005). A trigger block (4014) is provided on the inner side wall of the fixing collar (4007). The fixing collar (4007) is sleeved on the soil sampling cylinder (2005). A fixing slider (4013) is provided on the inner side wall of the fixing collar (4007). The fixing slider (4013) is slidably connected to the fixing chute (4012). The depth adjustment fixing bolt (4009) is threadedly connected to the base (1000) and contacts the depth setting bar (4001).

5. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 4, characterized in that: The trigger-type soil sampling mechanism (2000) includes a drive cavity (2001), a soil sampling drive gear (2002), a soil sampling motor (2003) and a soil sampling driven gear ring (2004). The drive cavity (2001) is arranged in the base (1000). A soil sampling rotary chute (2006) is arranged in the drive cavity (2001). The soil sampling drive gear (2002) is rotatably arranged in the drive cavity (2001). The soil sampling motor (2003) is arranged on the base (1000), and the output end of the soil sampling motor (2003) is coaxially and fixedly connected to the soil sampling drive gear (2002). The soil sampling driven gear ring (2004) is rotatably arranged on the soil sampling rotary chute (2006), the soil sampling driven gear ring (2004) is arranged in the drive cavity (2001), the soil sampling driven gear ring (2004) is meshed with the soil sampling drive gear (2002), an internal thread (2007) is arranged on the inner side wall of the soil sampling driven gear ring (2004), an external thread (2008) is arranged on the outer side wall of the soil sampling cylinder (2005), and the internal thread (2007) is in threaded connection with the external thread (2008).

6. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 5, characterized in that: A fixed card slot (2010) is arranged at the top of the soil sampling cylinder (2005). An inner cylinder (2011) is slidably inserted and connected to the soil sampling cylinder (2005). A fixed card block (2013) is arranged on the inner cylinder (2011), and the fixed card block (2013) is in clamping connection with the fixed card slot (2010). A fixed cover (2012) is threadedly connected to the top of the soil sampling cylinder (2005). The fixed cover (2012) covers the top of the inner cylinder (2011), and the fixed cover (2012) is in contact with the top of the inner cylinder (2011). The inner cylinder (2011) includes a semi-cylinder one (2014) and a semi-cylinder two (2015). A fitting card block (2016) is arranged on the semi-cylinder one (2014), and a fitting card slot (2017) is arranged on the semi-cylinder two (2015). The fitting card block (2016) is in clamping connection with the fitting card slot (2017).

7. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 6, characterized in that: The leveling and fixing assembly (5000) includes a leveling sleeve (5001), a leveling sleeve column (5002), a placement plate (5003), a pointed plug rod (5004), a convex block (5005) and a tightening bolt (5007). The leveling sleeves (5001) are symmetrically arranged at the bottom of the base (1000). The leveling sleeve (5001) is arranged as a cavity with an open lower end. A leveling smooth groove (5006) is provided in the leveling sleeve (5001). The leveling sleeve column (5002) is inserted and connected to the lower end of the leveling sleeve (5001), and the leveling sleeve column (5002) is slidably connected to the leveling smooth groove (5006). The placement plate (5003) is arranged at the bottom of the leveling sleeve column (5002). The pointed plug rod (5004) is arranged at the bottom of the placement plate (5003). The convex blocks (5005) are arranged in an array at the bottom of the placement plate (5003). The tightening bolt (5007) is threadedly connected to the leveling sleeve (5001) and contacts the leveling sleeve column (5002).

8. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 7, characterized in that: A controller (7001) and a storage battery (7002) are provided on the base (1000). The storage battery (7002) is electrically connected to the controller (7001) and the soil sampling motor (2003) respectively.

9. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 8, wherein: There are four groups of the leveling and fixing assemblies (5000), and the number of the closing control gears (3107) is the same as that of the closing blades (3104) and they are in one-to-one correspondence.

10. The trigger-type undisturbed soil depth-fixed sampling device for geological disaster detection according to claim 9, characterized in that: The soil sampling cylinder body (2005) and the soil sampling driven gear ring (2004) are coaxially arranged.

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