Sampling device for investigation and design of municipal roads and bridges

Abstract

The invention relates to the technical field of road investigation sampling, in particular to a sampling device for municipal road and bridge investigation design, which comprises a crawler, a sampling part, a soil drilling part, a pressing part and a hydraulic pump, the sampling part is rotatably arranged at the top of the crawler and movably penetrates through the crawler, and the soil drilling part is fixedly arranged at the bottom of the sampling part and movably penetrates through the pressing part. The pressing part is fixedly arranged at the top of the crawler, and the hydraulic pump is fixedly arranged at the top of the crawler. Through the arrangement of the sampling part, an annular crack can be constructed on the surface of a sampled rock core, after the crack is constructed, a worker knocks the outer wall of a sampling drill cylinder through a hammer, the rock core located in a crack guiding inner pipe slides downwards under the vibration effect, meanwhile, the vibration effect can cause the rock core to be fractured along a crack guiding position, and therefore during sampling, the crack guiding effect is greatly improved. Multiple sections of rock core samples with approximately same lengths can be obtained, and the technical problem that the lengths of sampled rock cores are different in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the technical field of road survey and sampling, in particular to a sampling device for municipal road and bridge survey and design. Background Art

[0002] Roads and bridges are generally composed of several parts, such as roadbed, pavement, bridge, road engineering and traffic engineering facilities. Before the construction of roads and bridges, it is necessary to survey the site of the road and bridge, and to sample the soil at the site during the survey. According to a Chinese patent with the authorization announcement number: CN118243437B, a core sampling device and a sampling method thereof are disclosed. By setting a blocking component, the number of single target samples collected by the device is increased, and the reliability of the sample data is increased;

[0003] After the above-mentioned drilling equipment takes samples, it is not convenient to collect samples due to the long length of the entire core. At the same time, the equipment does not have the technical means to set the fracture position of the core. Therefore, if the core is manually broken, it is difficult to ensure that the length of the core is roughly the same after the break. For this reason, we propose a sampling device for municipal road and bridge survey and design to solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention provides the following technical solution: a sampling device for municipal road and bridge survey and design, comprising:

[0005] Tracked vehicles;

[0006] A sampling unit is rotatably arranged on the top of the crawler vehicle and movably passes through the crawler vehicle, and the sampling unit is used for road survey and sampling;

[0007] A soil drilling part, fixedly arranged at the bottom of the sampling part, and used for fixing the core;

[0008] The pressing part is fixedly arranged on the top of the crawler vehicle, and the crawler vehicle is used for the up and down driving of the sampling part and the soil drilling part;

[0009] The hydraulic pump is fixedly arranged on the top of the crawler vehicle, and the hydraulic pump is used for torsion drive of the sampling part and the soil drilling part.

[0010] As a preferred solution of the present invention, the sampling part comprises:

[0011] A sampling drill tube, wherein an inner cavity is formed inside the sampling drill tube;

[0012] The crack guiding inner tube is rotatably mounted inside the inner cavity, and the inner wall of the crack guiding inner tube is provided with a plurality of telescopic holes which are equidistantly distributed up and down;

[0013] The seam-making steel cone is slidably installed inside the telescopic hole and is used for core guide fractures for sampling;

[0014] The annular sliding cavity is provided inside the sampling drill tube and is divided into upper and lower layers, and the distance between the upper and lower adjacent annular sliding cavities is constant;

[0015] The annular tightening hoop is slidably mounted inside the annular sliding cavity. The inner side surface of the annular tightening hoop is an increasing conical surface that gradually widens upwards. The inner side surface of the annular tightening hoop abuts against the end of the seam-making steel cone.

[0016] As a preferred solution of the present invention, the sampling unit further includes:

[0017] Sliding holes are provided on both sides of the top of the sampling drill tube, penetrate the interior of the sampling drill tube, and extend to the bottom of the sampling drill tube;

[0018] A No. 1 push rod is slidably mounted inside the slide hole, and the annular tightening hoop is fixedly mounted on the outer wall of the No. 1 push rod;

[0019] A piston, fixedly mounted on the top of the outer wall of the No. 1 push rod;

[0020] The cylinder head is fixedly mounted on the top of the sampling drill tube, and oil cylinder chambers are opened on both sides of the top of the cylinder head. The oil cylinder chamber is located at the top of the sliding hole, and the No. 1 push rod is movably extended to the inside of the oil cylinder chamber, and the outer wall of the piston is slidably connected to the inner wall of the oil cylinder chamber;

[0021] An oil filling pipe is fixedly mounted on the top of the cylinder head, and the interior of the oil filling pipe is connected to the interior of the cylinder chamber;

[0022] The torsion rod is fixedly installed at the top center of the cylinder head.

[0023] As a preferred solution of the present invention, the sampling unit further includes:

[0024] A No. 1 hydraulic motor is fixedly mounted on the top of the sampling drill tube and is located inside the cylinder head. The output shaft of the No. 1 hydraulic motor movably penetrates the sampling drill tube and extends into the inside thereof. The bottom of the output shaft of the No. 1 hydraulic motor is fixedly connected to the top of the inner crack guide tube.

[0025] A reset sliding cavity is provided on the inner wall of the telescopic hole, and has a hole diameter larger than that of the telescopic hole, and the reset sliding cavity is concentric with the center of the telescopic hole;

[0026] A reset ring is slidably mounted inside the reset slide cavity and fixedly mounted on the outer wall of the seam-making steel cone;

[0027] A No. 1 reset spring is sleeved on the periphery of the seam-making steel cone and fixedly installed between a side surface of the reset ring and an inner end surface of one side of the reset sliding cavity.

[0028] As a preferred solution of the present invention, the soil drilling part comprises:

[0029] The soil drilling tube is fixedly installed at the bottom of the sampling drill tube;

[0030] An annular groove is provided on the inner wall of the soil drilling tube;

[0031] The chute is arranged on both sides of the soil drilling pipe and is connected with the inside of the annular groove;

[0032] The push-pull slider is slidably installed inside the slide groove;

[0033] The arc-shaped torque-limiting pressure plate is fixedly mounted on one end of the push-pull sliding block close to the center of the soil drilling pipe, and the curvature of the arc-shaped torque-limiting pressure plate is in close contact with the curvature of the annular groove.

[0034] As a preferred solution of the present invention, the soil drilling part further includes:

[0035] A guide hole is provided at the top of the soil drilling tube and extends to the interior of the slideway, wherein the guide hole is located at the bottom of the slideway;

[0036] A second ejector rod is slidably mounted inside the guide hole and extends to the inside of the slide groove;

[0037] A buffer spring is located inside the slide hole and is fixedly installed between the bottom of the No. 1 push rod and the top of the No. 2 push rod;

[0038] The thrust plate is fixedly mounted on the bottom of the second push rod, the outer wall of the thrust plate is slidably connected to the inner wall of the slide groove, and the bottom of the thrust plate abuts against the top inclined surface of the push-pull sliding block.

[0039] As a preferred solution of the present invention, the soil drilling part further includes:

[0040] The second return spring is located inside the slide slot and is fixedly installed between a side of the push-pull slider away from the arc-shaped torque limiting pressure plate and an inner wall of one side of the slide slot;

[0041] The soil breaking teeth are installed at the bottom of the soil drilling tube, and there are multiple soil breaking teeth, which are distributed in a circular array.

[0042] As a preferred solution of the present invention, the pressing part comprises:

[0043] The light beam is vertically fixed on the top of the crawler vehicle and is distributed front and back;

[0044] A guide seat is slidably mounted on the outer walls of the front and rear light columns;

[0045] The No. 2 hydraulic motor is fixedly mounted on the top of the guide seat and is located between the front and rear light columns. The output shaft of the No. 2 hydraulic motor movably passes through the guide seat and extends to the periphery of its bottom. The bottom of the output shaft of the No. 2 hydraulic motor is fixedly connected to the top of the torsion rod.

[0046] As a preferred solution of the present invention, the pressing part further includes:

[0047] Push-pull block, fixedly installed on the top of the two light beams;

[0048] The cylinder rod is fixedly installed between the bottom of the push-pull block and the top of the crawler vehicle;

[0049] A connecting plate, fixedly mounted on a side of the guide seat close to the cylinder rod;

[0050] The rodless cylinder is fixedly mounted inside the connecting plate and slidably mounted on the periphery of the cylinder rod.

[0051] As a preferred solution of the present invention, the output end of the hydraulic pump is connected to the input end of the second hydraulic motor and the input end of the first hydraulic motor through an oil pipe, and the output end of the hydraulic pump is connected to the two oil filling pipes through a universal oil circuit joint.

[0052] Compared with the prior art, the present invention has the following beneficial effects:

[0053] 1. In the present invention, the No. 1 push rod of the sampling part slides downward to further drive the annular tightening hoop and the buffer spring to move downward. The annular tightening hoop moves downward, and its inner side surface applies thrust to the end of the seam-making steel cone, pushing the seam-making steel cone out from the inside of the telescopic hole, so that the tip of the seam-making steel cone applies extrusion force to the rock core, so that cracks are generated on the surface of the rock core, and the No. 1 hydraulic motor output shaft drives the inner tube of the guide crack to rotate, and the rotation of the inner tube of the guide crack also drives the seam-making steel cone to rotate together through the torsion rod, and because the annular tightening hoop is arranged in an annular shape Therefore, as the expansion hole rotates with the inner tube of the fracture guide, the inner side of the annular tightening hoop continuously applies thrust to the end of the seam-making steel cone, thereby constructing an annular crack on the outer wall of the core. After the crack is constructed, the worker hits the outer wall of the sampling drill tube with a hammer. Under the action of vibration, the core inside the inner tube of the fracture guide slides downward. At the same time, the vibration will cause the core to break along the fracture guide. Therefore, when sampling, multiple core samples of roughly the same length can be obtained, which solves the technical problem of different lengths of sampled cores in the prior art.

[0054] 2. In the present invention, while the piston pushes the No. 1 push rod downward, the connecting action of the buffer spring drives the No. 2 push rod to move together with the thrust plate, causing the thrust plate to generate a wedge force on the push-pull slider, pushing the push-pull slider toward the center of the drill pipe. The movement of the push-pull slider further drives the arc-shaped torsion-limiting pressure plate to move together, so that the inner arc surface of the arc-shaped torsion-limiting pressure plate is tightly attached to the outer wall of the core, fixing the core, ensuring that the core will not twist during the process of guiding the fracture of the core, thereby ensuring the smoothness of the core guiding the fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a structural schematic diagram of the present invention;

[0056] Figure 2 For the present invention Figure 1 Schematic diagram of the local structure;

[0057] Figure 3 It is a structural schematic diagram of the sampling part and the soil drilling part in the present invention;

[0058] Figure 4 It is a schematic diagram of the bottom perspective structure of the sampling part and the soil drilling part in the present invention;

[0059] Figure 5 It is a schematic diagram of the side section structure of the sampling drill tube in the present invention;

[0060] Figure 6 It is a schematic cross-sectional structural diagram of the annular sliding cavity in the present invention;

[0061] Figure 7 This is a schematic diagram of the structure of the inner pipe for guiding cracks in the present invention;

[0062] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of part A;

[0063] Fig. 9 It is a schematic diagram of the side cross-section structure of the soil drilling pipe in the present invention;

[0064] Fig.10 It is a schematic diagram of the bottom perspective structure of the annular tightening hoop in the present invention.

[0065] In the figure: 100, crawler vehicle; 200, sampling unit; 201, sampling drill tube; 202, inner cavity; 203, crack guide inner tube; 204, telescopic hole; 205, seam-making steel cone; 206, annular sliding cavity; 207, annular tightening hoop; 208, sliding hole; 209, No. 1 push rod; 2010, piston; 2011, cylinder head; 2012, cylinder chamber; 2013, oil filling pipe; 2014, torsion rod; 2015, No. 1 hydraulic motor; 2016, reset sliding cavity; 2017, reset ring; 2018, No. 1 reset spring ;300, drilling part;301, drilling pipe;302, annular groove;303, slide groove;304, push-pull slider;305, arc-shaped torque limiting pressure plate;306, guide hole;307, No. 2 push rod;308, buffer spring;309, thrust plate;3010, No. 2 return spring;3011, breaking tooth;400, lower pressure part;401, light column;402, guide seat;403, No. 2 hydraulic motor;404, push-pull block;405, cylinder rod;406, connecting plate;407, rodless cylinder;500, hydraulic pump. DETAILED DESCRIPTION

[0066] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] See also Figures 1 to 10 The technical solution provided by the present invention specifically includes the following embodiments:

[0068] A sampling device for municipal road and bridge survey and design includes a crawler vehicle 100, a sampling part 200, a soil drilling part 300, a pressing part 400 and a hydraulic pump 500. The sampling part 200 is rotatably arranged on the top of the crawler vehicle 100 and moves through the crawler vehicle 100. The sampling part 200 is used for road survey and sampling. The soil drilling part 300 is fixedly arranged at the bottom of the sampling part 200. The pressing part 400 is fixedly arranged on the top of the crawler vehicle 100. The crawler vehicle 100 is used for up and down driving of the sampling part 200 and the soil drilling part 300. The hydraulic pump 500 is fixedly arranged on the top of the crawler vehicle 100. The hydraulic pump 500 is used for torsional driving of the sampling part 200 and the soil drilling part 300.

[0069] For further details, please refer to Figure 2 to Figure 10 As shown:

[0070] The sampling part 200 includes a sampling drill tube 201, an inner cavity 202, a crack guiding inner tube 203, a telescopic hole 204, a seam-making steel cone 205, an annular sliding cavity 206, an annular tightening hoop 207, a sliding hole 208, a No. 1 push rod 209, a piston 2010, a cylinder head 2011, a cylinder chamber 2012, an oil filling pipe 2013, a torsion rod 2014, a No. 1 hydraulic motor 2015, a reset sliding cavity 2016, a reset ring 2017 and a No. 1 reset spring 2018. The sampling drill tube 201 has an inner cavity 202, and the crack guiding inner tube 203 is rotatably installed in the inner cavity 202. The inner wall of the crack guiding inner tube 203 is provided with a plurality of telescopic holes 204 distributed at equal distances up and down, and the seam-making steel cone 20 The annular sliding cavity 206 is provided inside the sampling drill tube 201 and is divided into upper and lower layers, and the spacing between the upper and lower adjacent annular sliding cavities 206 is constant. The annular tightening hoop 207 is slidably installed inside the annular sliding cavity 206. The inner side surface of the annular tightening hoop 207 is an increasing conical surface that gradually widens upward. The inner side surface of the annular tightening hoop 207 abuts against the end of the seam-making steel cone 205. The sliding hole 208 is provided on both sides of the top of the sampling drill tube 201 and passes through the interior of the sampling drill tube 201 and extends to the bottom of the sampling drill tube 201. The No. 1 push rod 209 is slidably installed inside the sliding hole 208. The annular tightening hoop 207 is fixedly installed on the No. 1 push rod On the outer wall of the rod 209, the piston 2010 is fixedly mounted on the outer wall top of the No. 1 push rod 209, the cylinder head 2011 is fixedly mounted on the top of the sampling drill tube 201, and cylinder chambers 2012 are opened on both sides of the top of the cylinder head 2011. The cylinder chamber 2012 is located at the top of the sliding hole 208. The No. 1 push rod 209 is movably extended to the inside of the cylinder chamber 2012, the outer wall of the piston 2010 is slidably connected to the inner wall of the cylinder chamber 2012, the oil filling pipe 2013 is fixedly mounted on the top of the cylinder head 2011, and the interior of the oil filling pipe 2013 is connected to the interior of the cylinder chamber 2012, the torsion rod 2014 is fixedly mounted at the top center of the cylinder head 2011, and the No. 1 hydraulic motor 2015 is fixedly mounted on the top of the sampling drill tube 201 The first hydraulic motor 2015 is located inside the cylinder head 2011, the output shaft of the first hydraulic motor 2015 movably penetrates the sampling drill tube 201 and extends into the inside thereof, and the bottom of the output shaft of the first hydraulic motor 2015 is fixedly connected to the top of the inner tube 203 of the guide crack, the reset slide cavity 2016 is provided on the inner wall of the telescopic hole 204, and the aperture is larger than the aperture of the telescopic hole 204, the reset slide cavity 2016 is concentric with the center of the telescopic hole 204, the reset ring 2017 is slidably installed inside the reset slide cavity 2016, and is fixedly installed on the outer wall of the seam-making steel cone 205, the first reset spring 2018 is sleeved on the periphery of the seam-making steel cone 205, and is fixedly installed between one side of the reset ring 2017 and one side inner end surface of the reset slide cavity 2016;

[0071] The output end of the hydraulic pump 500 is connected to the input end of the second hydraulic motor 403 and the input end of the first hydraulic motor 2015 through an oil pipe, and the output end of the hydraulic pump 500 is connected to the two oil filling pipes 2013 through a universal oil circuit joint.

[0072] Specifically, the sampling part 200 and the soil drilling part 300 are driven to move downward by the pressing part 400, and are driven to rotate at the same time, so that the sampling part 200 and the soil drilling part 300 are inserted into the soil as a whole for sampling. After the sampling is completed, the sampling part 200 and the soil drilling part 300 are driven to reset upward by the pressing part 400, and the sampling part 200 and the soil drilling part 300 are extracted from the soil, and the sampled rock core is taken out together. After the sampled rock core is taken out, the hydraulic pump 500 supplies oil to the inside of the two oil cylinder chambers 2012 through the two oil filling pipes 2013, resulting in an increase in the oil pressure inside the two oil cylinder chambers 2012, pushing the two pistons 2010 downward, and the two pistons 20 During the downward push of 10, the two No. 1 push rods 209 are driven to slide downward along the two sliding holes 208. The downward sliding of the No. 1 push rod 209 further drives the annular tightening hoop 207 to move downward. The annular tightening hoop 207 moves downward, and its inner side surface applies a thrust to the end of the seam-making steel cone 205, pushing the seam-making steel cone 205 out from the inside of the telescopic hole 204, so that the tip of the seam-making steel cone 205 applies an extrusion force to the rock core. At the same time, the seam-making steel cone 205 also drives the reset ring 2017 to move together, causing the No. 1 reset spring 2018 to be stretched and stored, thereby providing elastic potential energy for the reset ring 2017 and the seam-making steel cone 205 to reset, and the tip of the seam-making steel cone 205 squeezes the rock core. The outer wall of the core is cracked. As the hydraulic pump 500 continues to supply oil to the inside of the cylinder chamber 2012, the oil pressure inside the cylinder chamber 2012 continues to increase, that is, the force of the piston 2010 pushing the No. 1 push rod 209 downward increases, further increasing the thrust applied by the annular tightening hoop 207 to the end of the seam-making steel cone 205, and increasing the crushing force of the tip of the seam-making steel cone 205 on the outer wall of the core, so that cracks are generated on the outer wall of the core along the crushing position of the seam-making steel cone 205. At the same time, the hydraulic pump 500 also supplies oil to the No. 1 hydraulic motor 2015, so that its output shaft drives the fracture-guiding inner tube 203 to rotate, and the rotation of the fracture-guiding inner tube 203 is also through the torsion rod 2014 The seam-making steel cone 205 is driven to rotate together, and because the annular tightening hoop 207 is arranged in an annular shape, the telescopic hole 204 rotates with the fracture-guiding inner tube 203, and the thrust applied by the inner side of the annular tightening hoop 207 to the end of the seam-making steel cone 205 is uninterrupted, thereby constructing an annular crack on the outer wall of the core. After the crack construction is completed, the worker hits the outer wall of the sampling drill tube 201 with a hammer. Under the action of vibration, the core located inside the fracture-guiding inner tube 203 slides downward, and the vibration action causes the core to break along the fracture. Therefore, when sampling, multiple core samples of roughly the same length can be obtained, which solves the technical problem of different lengths of sampled cores in the prior art.

[0073] For further details, please refer to Figures 4 to 6 as well as Fig. 9 As shown:

[0074] The drilling part 300 includes a drilling tube 301, an annular groove 302, a slide groove 303, a push-pull slider 304, an arc-shaped torque limiting pressure plate 305, a conducting hole 306, a No. 2 push rod 307, a buffer spring 308, a thrust plate 309 and a No. 2 return spring 3010. The drilling tube 301 is fixedly installed at the bottom of the sampling drill tube 201. The annular groove 302 is arranged on the inner wall of the drilling tube 301. The slide groove 303 is arranged on both sides of the interior of the drilling tube 301 and is connected with the interior of the annular groove 302. The pushing and pulling slider 304 is slidably installed in the interior of the slide groove 303. The arc-shaped torque limiting pressure plate 305 is fixedly installed on one end of the pushing and pulling slider 304 close to the center of the drilling tube 301, and the curvature of the arc-shaped torque limiting pressure plate 305 is in line with the curvature of the annular groove 302. The conducting hole 306 is arranged at the top of the drilling tube 301 and extends to the interior of the slide groove 303. The hole 306 is located at the bottom of the sliding hole 208, the No. 2 push rod 307 is slidably installed in the guide hole 306 and extends to the inside of the slide groove 303. The buffer spring 308 is located in the sliding hole 208 and is fixedly installed between the bottom of the No. 1 push rod 209 and the top of the No. 2 push rod 307. The thrust plate 309 is fixedly installed at the bottom of the No. 2 push rod 307. The outer wall of the thrust plate 309 is slidably connected to the inner wall of the slide groove 303, and the bottom of the thrust plate 309 abuts against the top inclined surface of the push-pull slider 304. The No. 2 return spring 3010 is located in the slide groove 303 and is fixedly installed between a side of the push-pull slider 304 away from the arc-shaped torque limiting pressure plate 305 and an inner wall of one side of the slide groove 303. The soil-breaking teeth 3011 are installed at the bottom of the drilling pipe 301, and there are multiple soil-breaking teeth 3011 distributed in a circular array.

[0075] Specifically, while the piston 2010 pushes the No. 1 push rod 209 to move downward, it also drives the No. 2 push rod 307 to move together with the thrust plate 309 through the connecting action of the buffer spring 308, causing the thrust plate 309 to generate a wedge force on the push-pull slider 304, pushing the push-pull slider 304 toward the center of the drill pipe 301. The movement of the push-pull slider 304 further drives the arc-shaped torsion limiting pressure plate 305 to move together, so that the inner arc surface of the arc-shaped torsion limiting pressure plate 305 is tightly attached to the outer wall of the core, fixing the core, ensuring that the core will not twist during the process of guiding the cracks in the core, thereby ensuring the smoothness of the core guiding the cracks.

[0076] For further details, please refer to Figure 2 As shown:

[0077] The pressing part 400 includes a light column 401, a guide seat 402, a second hydraulic motor 403, a push block 404, a cylinder rod 405, a connecting plate 406 and a rodless cylinder 407. The light column 401 is vertically fixedly installed on the top of the crawler 100 and is distributed front and back. The guide seat 402 is slidably installed on the outer walls of the front and rear light columns 401. The second hydraulic motor 403 is fixedly installed on the top of the guide seat 402 and is located between the front and rear light columns 401. The output shaft of the second hydraulic motor 403 moves through The guide seat 402 is extended to the periphery of its bottom, the bottom of the output shaft of the No. 2 hydraulic motor 403 is fixedly connected to the top of the torsion rod 2014, the push-pull block 404 is fixedly installed on the top of the two light columns 401, the cylinder rod 405 is fixedly installed between the bottom of the push-pull block 404 and the top of the crawler vehicle 100, the connecting plate 406 is fixedly installed on a side of the guide seat 402 close to the cylinder rod 405, the rodless cylinder 407 is fixedly installed inside the connecting plate 406, and is slidably installed on the periphery of the cylinder rod 405.

[0078] Specifically, the crawler 100 is moved to move the sampling part 200, the soil drilling part 300, the pressing part 400 and the hydraulic pump 500 to the sampling position, and the hydraulic pump 500 supplies oil to the rodless cylinder 407, so that the rodless cylinder 407 moves downward along the cylinder rod 405, driving the connecting plate 406 and the guide seat 402 to move together. The guide seat 402 moves downward under the guidance of the front and rear light columns 401, and can move more smoothly and stably. The downward movement of the guide seat 402 drives the sampling part 200 and the soil drilling part 300 to move downward as a whole. At the same time, The hydraulic pump 500 also supplies oil to the interior of the No. 2 hydraulic motor 403, so that the output shaft of the No. 2 hydraulic motor 403 drives the sampling part 200 and the drilling part 300 to rotate as a whole, and cooperates with the downward pushing action of the upper guide seat 402 to make the sampling part 200 and the drilling part 300 as a whole inserted into the soil for sampling. After the sampling is completed, the hydraulic pump 500 supplies oil to drive the rodless cylinder 407 to move upward along the cylinder rod 405, and further drives the sampling part 200 and the drilling part 300 to move upward together through the guide seat 402, and extract them from the soil, and bring the sampled rock core out together.

[0079] In the present scheme, a sampling device for municipal road and bridge survey and design is moved by a crawler 100 during operation, and the sampling part 200, the soil drilling part 300, the pressing part 400 and the hydraulic pump 500 are moved to the sampling position. The hydraulic pump 500 supplies oil to the rodless cylinder 407, so that the rodless cylinder 407 moves downward along the cylinder rod 405, driving the connecting plate 406 and the guide seat 402 to move together. The guide seat 402 moves downward under the guidance of the front and rear light columns 401, and can move more smoothly and stably. The downward movement of the guide seat 402 drives the sampling part 200 and the soil drilling part 300 as a whole. At the same time, the hydraulic pump 500 also supplies oil to the interior of the second hydraulic motor 403, so that the output shaft of the second hydraulic motor 403 drives the sampling part 200 and the soil drilling part 300 to rotate as a whole, and cooperates with the downward pushing action of the upper guide seat 402 to make the sampling part 200 and the soil drilling part 300 as a whole inserted into the soil for sampling. After the sampling is completed, the rodless cylinder 407 is driven to move upward along the cylinder rod 405 through the hydraulic pump 500, and further driven by the guide seat 402 to move upward together with the sampling part 200 and the soil drilling part 300, and extracted from the soil, and the sampled rock core is taken out together;

[0080] After the sampled core is taken out, the hydraulic pump 500 supplies oil to the interior of the two cylinder chambers 2012 through the two oil filling pipes 2013, causing the oil pressure inside the two cylinder chambers 2012 to increase, pushing the two pistons 2010 downward. While the two pistons 2010 are pushed downward, the two No. 1 push rods 209 are driven to slide downward along the two sliding holes 208. The downward sliding of the No. 1 push rod 209 further drives the annular tightening hoop 207 and the buffer spring 308 to move downward. The annular tightening hoop 207 moves downward, and its inner side surface will apply a thrust to the end of the seam-making steel cone 205, so as to make the seam-making steel cone 205 The steel cone 205 is pushed out from the inside of the telescopic hole 204, so that the tip of the seam-making steel cone 205 applies an extrusion force to the rock core. At the same time, the seam-making steel cone 205 also drives the reset ring 2017 to move together, causing the No. 1 reset spring 2018 to be stretched and stored, thereby providing elastic potential energy for the reset ring 2017 and the seam-making steel cone 205 to reset. The tip of the seam-making steel cone 205 squeezes the outer wall of the rock core to form a seam on the outer wall of the rock core. As the hydraulic pump 500 continues to supply oil to the inside of the cylinder chamber 2012, the internal oil pressure of the cylinder chamber 2012 continues to increase, that is, the piston 2010 pushes a The force of the No. 1 push rod 209 moving downward increases, further increasing the thrust exerted by the annular tightening hoop 207 on the end of the seam-making steel cone 205, and increasing the crushing force of the tip of the seam-making steel cone 205 on the outer wall of the core, causing cracks to appear on the outer wall of the core along the crushing position of the seam-making steel cone 205. At the same time, the hydraulic pump 500 also supplies oil to the No. 1 hydraulic motor 2015, so that its output shaft drives the crack-guiding inner tube 203 to rotate. The rotation of the crack-guiding inner tube 203 also drives the seam-making steel cone 205 to rotate together through the torsion rod 2014. In addition, since the annular tightening hoop 207 is arranged in a ring shape, As the inner crack guiding tube 203 rotates, the inner side of the annular tightening hoop 207 continuously applies thrust to the end of the crack-making steel cone 205, thereby constructing an annular crack on the outer wall of the rock core. After the crack is constructed, the worker hits the outer wall of the sampling drill tube 201 with a hammer. Under the action of vibration, the rock core inside the inner crack guiding tube 203 slides downward. At the same time, the vibration will cause the rock core to break along the crack guiding tube. Therefore, when sampling, multiple sections of rock core samples of roughly the same length can be obtained, solving the technical problem of different lengths of sampled rock cores in the prior art.

[0081] It should be noted that the downward movement of the buffer spring 308 drives the second push rod 307 together with the thrust plate 309, causing the thrust plate 309 to generate a wedge force on the push-pull slider 304, pushing the push-pull slider 304 toward the center of the drill pipe 301. The movement of the push-pull slider 304 further drives the arc-shaped torsion limiting pressure plate 305 to move together, so that the inner arc surface of the arc-shaped torsion limiting pressure plate 305 is tightly attached to the outer wall of the core, fixing the core, ensuring that the core will not twist during the process of guiding the cracks in the core, thereby ensuring the smoothness of the core guiding the cracks.

[0082] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A sampling device for municipal road and bridge survey and design, characterized in that: include: Tracked Vehicle (100); A sampling part (200) is rotatably arranged on the top of the crawler vehicle (100) and movably passes through the crawler vehicle (100), wherein the sampling part (200) is used for road survey and sampling; A soil drilling part (300) is fixedly arranged at the bottom of the sampling part (200), and the soil drilling part (300) is used to fix the rock core; The pressing part (400) is fixedly arranged on the top of the crawler vehicle (100), and the crawler vehicle (100) is used for driving the sampling part (200) and the soil drilling part (300) up and down; The hydraulic pump (500) is fixedly arranged on the top of the crawler vehicle (100), and the hydraulic pump (500) is used for torsion driving of the sampling part (200) and the soil drilling part (300).

2. A sampling device for municipal road and bridge survey and design according to claim 1, characterized in that: The sampling portion (200) comprises: A sampling drill tube (201), wherein an inner cavity (202) is formed inside the sampling drill tube (201); The crack guiding inner tube (203) is rotatably mounted inside the inner cavity (202), and the inner wall of the crack guiding inner tube (203) is provided with a plurality of telescopic holes (204) distributed at equal distances up and down; A seam-making steel cone (205) is slidably mounted inside the telescopic hole (204) and is used to guide the fracture of the core for sampling; The annular sliding cavity (206) is provided inside the sampling drill tube (201) and is divided into upper and lower layers, and the distance between the upper and lower adjacent annular sliding cavities (206) is constant; The annular tightening hoop (207) is slidably mounted inside the annular sliding cavity (206); the inner side surface of the annular tightening hoop (207) is a progressively tapered surface that gradually widens upwards; the inner side surface of the annular tightening hoop (207) abuts against the end of the seam-making steel cone (205).

3. A sampling device for municipal road and bridge survey and design according to claim 2, characterized in that: The sampling portion (200) further includes: The sliding holes (208) are formed on both sides of the top of the sampling drill tube (201), penetrate the interior of the sampling drill tube (201), and extend to the bottom of the sampling drill tube (201); A first push rod (209) is slidably mounted inside the slide hole (208), and the annular tightening hoop (207) is fixedly mounted on the outer wall of the first push rod (209); A piston (2010) is fixedly mounted on the top of the outer wall of the No. 1 push rod (209); The cylinder head (2011) is fixedly mounted on the top of the sampling drill tube (201), and oil cylinder chambers (2012) are provided on both sides of the top of the cylinder head (2011). The oil cylinder chamber (2012) is located at the top of the sliding hole (208), and the No. 1 push rod (209) movably extends into the interior of the oil cylinder chamber (2012), and the outer wall of the piston (2010) is slidably connected to the inner wall of the oil cylinder chamber (2012); An oil filling pipe (2013) is fixedly mounted on the top of the cylinder head (2011), and the interior of the oil filling pipe (2013) is connected to the interior of the oil cylinder chamber (2012); The torsion rod (2014) is fixedly mounted at the top center of the cylinder head (2011).

4. A sampling device for municipal road and bridge survey and design according to claim 3, characterized in that: The sampling portion (200) further includes: A No. 1 hydraulic motor (2015) is fixedly mounted on the top of the sampling drill tube (201) and is located inside the cylinder head (2011); an output shaft of the No. 1 hydraulic motor (2015) movably penetrates the sampling drill tube (201) and extends into the interior thereof; and a bottom of the output shaft of the No. 1 hydraulic motor (2015) is fixedly connected to a top of the crack guide inner tube (203); A reset sliding cavity (2016) is formed on the inner wall of the telescopic hole (204) and has a hole diameter greater than that of the telescopic hole (204); the reset sliding cavity (2016) is concentric with the center of the telescopic hole (204); A reset ring (2017) is slidably mounted inside the reset slide cavity (2016) and fixedly mounted on the outer wall of the seam-making steel cone (205); A No. 1 reset spring (2018) is sleeved on the periphery of the seam-making steel cone (205) and is fixedly installed between a side surface of the reset ring (2017) and an inner end surface of one side of the reset sliding cavity (2016).

5. A sampling device for municipal road and bridge survey and design according to claim 4, characterized in that: The soil drilling part (300) comprises: A soil drilling tube (301) fixedly mounted on the bottom of the sampling drill tube (201); An annular groove (302) is formed on the inner wall of the soil drilling pipe (301); The slide grooves (303) are provided on both sides of the soil drilling pipe (301) and are connected to the inside of the annular groove (302); A push-pull slider (304) is slidably mounted inside the slide groove (303); The arc-shaped torque-limiting pressure plate (305) is fixedly mounted on one end of the push-pull slider (304) close to the center of the soil drilling pipe (301), and the arc of the arc-shaped torque-limiting pressure plate (305) is in close contact with the arc of the annular groove (302).

6. A sampling device for municipal road and bridge survey and design according to claim 5, characterized in that: The soil drilling part (300) further comprises: A conducting hole (306) is formed at the top of the soil drilling tube (301) and extends to the interior of the slide groove (303). The conducting hole (306) is located at the bottom of the slide hole (208); A second push rod (307) is slidably mounted inside the guide hole (306) and extends to the inside of the slide groove (303); A buffer spring (308) is located inside the slide hole (208) and is fixedly mounted between the bottom of the first push rod (209) and the top of the second push rod (307); The thrust plate (309) is fixedly mounted on the bottom of the second push rod (307), the outer wall of the thrust plate (309) is slidably connected to the inner wall of the slide groove (303), and the bottom of the thrust plate (309) abuts against the top inclined surface of the push-pull slider (304).

7. A sampling device for municipal road and bridge survey and design according to claim 6, characterized in that: The soil drilling part (300) further comprises: A second return spring (3010) is located inside the slide groove (303) and is fixedly installed between a side of the push-pull slider (304) away from the arc-shaped torque limiting pressure plate (305) and an inner wall of one side of the slide groove (303); The soil breaking teeth (3011) are installed at the bottom of the soil drilling tube (301), and there are a plurality of soil breaking teeth (3011), which are distributed in a circular array.

8. The sampling device for municipal road and bridge survey and design according to claim 7 is characterized in that: The pressing portion (400) comprises: The light beams (401) are vertically fixedly mounted on the top of the crawler vehicle (100) and are distributed front and back; A guide seat (402) is slidably mounted on the outer walls of the front and rear light columns (401); The second hydraulic motor (403) is fixedly mounted on the top of the guide seat (402) and is located between the front and rear light columns (401). The output shaft of the second hydraulic motor (403) movably passes through the guide seat (402) and extends to the periphery of the bottom thereof. The bottom of the output shaft of the second hydraulic motor (403) is fixedly connected to the top of the torsion rod (2014).

9. A sampling device for municipal road and bridge survey and design according to claim 8, characterized in that: The pressing portion (400) further comprises: A push-pull block (404) is fixedly mounted on the top of the two light beams (401); The cylinder rod (405) is fixedly mounted between the bottom of the push-pull block (404) and the top of the crawler vehicle (100); A connecting plate (406) is fixedly mounted on a side of the guide seat (402) close to the cylinder rod (405); The rodless cylinder (407) is fixedly mounted inside the connecting plate (406) and slidably mounted on the periphery of the cylinder rod (405).

10. A sampling device for municipal road and bridge survey and design according to claim 9, characterized in that: The output end of the hydraulic pump (500) is connected to the input end of the second hydraulic motor (403) and the input end of the first hydraulic motor (2015) via an oil pipe, and the output end of the hydraulic pump (500) is connected to the two oil filling pipes (2013) via a universal oil circuit joint.

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