A device for collecting a sample of a saline soil frost heave

Abstract

The utility model provides a kind of saline soil frost heaving sample collection device, belong to soil sampling device field, including rectangular frame, lifting adjustment component and sampling assembly;Rectangular frame is internally provided with mounting cavity;The utility model: reduction gearbox is installed on the surface of lifting platform, and the connecting flange of output end is rotated by reduction gearbox speed reduction and torque increasing driven by rotating motor rotation, and the butt flange fixed connection of connecting flange and sampling cylinder top makes that rotating motor rotation drives sampling cylinder rotation, and the sawtooth of sampling cylinder bottom end installation is convenient for cutting to soil, under the driving of lifting platform, it is sampled to be inserted into soil layer, this kind of mode replaces the soil layer destruction when spiral drill sampling, it is convenient to keep the soil layer structure of saline frost heaving soil completely, ensure subsequent experimental data accuracy.

Description

Technical Field

[0001] This utility model relates to the field of soil sampling devices, specifically a device for collecting samples of frost heave in saline soil. Background Technology

[0002] Saline soil is prone to frost heave in cold regions. Its frost heave characteristics can lead to engineering problems such as foundation uplift, road cracking, and building tilting, seriously affecting the stability and service life of engineering structures. In the research and engineering investigation of frost heave in saline soil, obtaining complete and undamaged frost heave samples is a key prerequisite for analyzing the frost heave mechanism and assessing the frost heave hazards. Existing saline soil sampling devices have many defects: most sampling devices use augers or ordinary soil samplers, which can easily damage the original structure of the frost heave soil layer during drilling and soil extraction, resulting in sample distortion and affecting the accuracy of subsequent test data; some cylindrical sampling devices require knocking the outer shell to remove the soil sample from the sampling device, which is time-consuming, laborious, and inconvenient to use. Utility Model Content

[0003] The purpose of this invention is to provide a device for collecting samples of frost heave in saline soil, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a device for collecting samples of frost heave in saline soil, comprising a rectangular frame, a lifting and adjusting assembly, and a sampling assembly; Wherein: the rectangular frame has an internal mounting cavity, and bearing seats are installed at both ends of the inner wall of the mounting cavity; The lifting adjustment assembly includes a lead screw rotatably mounted inside the bearing seats at both ends. A stepper motor is fixedly mounted on the top of the mounting cavity. The output end of the stepper motor is fixedly connected to the top of the lead screw. A lifting block is threadedly connected to the surface of the lead screw. A lifting platform is fixedly mounted on the surface of the lifting block. Limit blocks are fixedly mounted on both sides of the back of the lifting platform. Slide rails are fixedly mounted on both sides of the surface of the rectangular frame. The limit blocks are slidably mounted on the surface of the slide rails. The sampling assembly includes a reduction gearbox fixedly mounted on the surface of the lifting platform. A rotary motor is provided on the top of the reduction gearbox. The output end of the rotary motor is connected to the input shaft end of the reduction gearbox. The output shaft end of the reduction gearbox passes through the bottom of the lifting platform and is equipped with a connecting flange. A sampling cylinder is provided on the top of the lifting platform. A docking flange is connected to the top of the sampling cylinder. The sampling cylinder is fixedly connected to the connecting flange through the docking flange. A serrated edge is installed around the bottom of the sampling cylinder.

[0005] As a preferred embodiment of this utility model: guide rails are installed on both sides and the back of the rectangular frame, a sliding block is slidably installed inside the guide rail, a pull rod is hinged to the surface of the sliding block, support arms are hinged to both sides and the back of the rectangular frame, a gripping claw is installed at the front end of the support arm, and one end of the pull rod is hinged to the middle of the surface of the support arm.

[0006] As a preferred embodiment of this utility model: hinge supports are installed on both sides and the back of the rectangular frame, and the hinge supports and one end of the support arm are connected to a locking pin for hinge connection, and one end of the locking pin is threadedly connected to a locking knob.

[0007] As a preferred embodiment of this utility model: the sampling tube is provided with a push plate inside, and handles are installed on both sides of the push plate. A stroke groove is opened through the surface of the sampling tube. The handles pass through the stroke grooves and extend to the outside. A press lock is hinged to the surface of the handles. The top of the sampling tube is provided with slots on both sides, and the press locks are engaged in the slots.

[0008] As a preferred embodiment of this utility model, the surface of the sampling tube is engraved with scale lines.

[0009] As a preferred embodiment of this utility model, damping blocks are installed at both ends of the slide rail.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) A gearbox is installed on the surface of the lifting platform. The rotating motor rotates and the speed is reduced and the torque is increased through the gearbox, which drives the connecting flange at the output end to rotate. The connecting flange is fixedly connected to the docking flange at the top of the sampling tube, so that the rotating motor rotates and drives the sampling tube to rotate. The saw teeth installed at the bottom of the sampling tube are convenient for cutting the soil. Under the drive of the lifting platform, it extends into the soil layer for sampling. This method replaces the soil layer destruction when the auger is used for sampling, which is convenient for preserving the soil layer structure of the saline frost heave soil and ensuring the accuracy of subsequent experimental data. (2) After the stepper motor rotates, it drives the lead screw to rotate inside the bearing seat. The rotation of the lead screw will drive the lifting block to rotate. The lifting block is equipped with a lifting platform. The lifting platform slides along the slide rail through the limit blocks on both sides of the back, so that when the lead screw rotates, the lifting block drives the lifting platform to rise and fall along the slide rail, thereby driving the sampling component into the sampling soil layer. The damping blocks installed at both ends of the slide rail limit the sliding range of the limit blocks. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the lifting and adjusting component structure of this utility model; Figure 3 This is a schematic diagram of the sampling component structure of this utility model; Figure 4 This is a schematic diagram of the installation structure of the push plate of this utility model; Figure 5 This is a schematic diagram of the support arm installation structure of this utility model.

[0012] In the diagram: 1. Rectangular frame; 2. Mounting cavity; 3. Bearing seat; 4. Lifting adjustment assembly; 41. Lead screw; 42. Stepper motor; 43. Lifting block; 44. Lifting platform; 45. Limit block; 46. Slide rail; 5. Sampling assembly; 51. Gearbox; 52. Rotary motor; 53. Connecting flange; 54. Sampling cylinder; 55. Butt flange; 56. Serrated edge; 6. Guide rail; 7. Sliding block; 8. Tie rod; 9. Support arm; 10. Gripping claw; 11. Hinge support; 12. Locking pin; 13. Locking knob; 14. Push plate; 15. Handle; 16. Stroke groove; 17. Press lock; 18. Slot; 19. Scale line; 20. Damping block. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figures 1-5 A device for collecting samples of frost heave in saline soil includes: a rectangular frame 1, a lifting and adjusting component 4, and a sampling component 5; the rectangular frame 1 has an installation cavity 2 inside, and bearing seats 3 are installed at both ends of the inner wall of the installation cavity 2. Please see Figure 1 , Figure 2 The lifting adjustment assembly 4 includes a lead screw 41 rotatably mounted inside the bearing seats 3 at both ends. A stepper motor 42 is fixedly mounted on the top of the mounting cavity 2. The output end of the stepper motor 42 is fixedly connected to the top of the lead screw 41. A lifting block 43 is threadedly connected to the surface of the lead screw 41. A lifting platform 44 is fixedly mounted on the surface of the lifting block 43. Limiting blocks 45 are fixedly mounted on both sides of the back of the lifting platform 44. Slide rails 46 are fixedly mounted on both sides of the surface of the rectangular frame 1. The limiting blocks 45 are slidably mounted on the surface of the slide rails 46. Damping blocks 20 are installed at both ends of the slide rails 46.

[0015] In practical use: After the stepper motor 42 rotates, it drives the lead screw 41 to rotate inside the bearing seat 3. The rotation of the lead screw 41 will drive the lifting block 43 to rotate. The lifting block 43 is equipped with a lifting platform 44. The lifting platform 44 slides along the slide rail 46 through the limit blocks 45 on both sides of the back, so that when the lead screw 41 rotates, the lifting block 43 drives the lifting platform 44 to rise and fall along the slide rail 46, thereby driving the sampling component 5 into the sampling soil layer. The damping blocks 20 installed at both ends of the slide rail 46 limit the sliding range of the limit blocks 45.

[0016] Please see Figure 3 The sampling assembly 5 includes a reduction gearbox 51 fixedly installed on the surface of the lifting platform 44. A rotary motor 52 is provided on the top of the reduction gearbox 51. The output end of the rotary motor 52 is connected to the input shaft end of the reduction gearbox 51. The output shaft end of the reduction gearbox 51 passes through the bottom of the lifting platform 44 and is equipped with a connecting flange 53. A sampling cylinder 54 is provided on the top of the lifting platform 44. A docking flange 55 is connected to the top of the sampling cylinder 54. The sampling cylinder 54 is fixedly connected to the connecting flange 53 through the docking flange 55. A serration 56 is installed around the bottom of the sampling cylinder 54.

[0017] In practical use: A reduction gearbox 51 is installed on the surface of the lifting platform 44. The rotation of the rotating motor 52 drives the connecting flange 53 at the output shaft end to rotate through the reduction gearbox 51 to reduce speed and increase torque. The connecting flange 53 is fixedly connected to the docking flange 55 at the top of the sampling cylinder 54, so that the rotation of the rotating motor 52 drives the sampling cylinder 54 to rotate. The serrations 56 installed at the bottom of the sampling cylinder 54 facilitate the cutting of the soil. Driven by the lifting platform 44, the sample is taken deep into the soil layer. This method replaces the method of auger drilling to sample, which destroys the soil layer and makes it easier to preserve the soil structure of saline frost heave soil intact, ensuring the accuracy of subsequent experimental data.

[0018] Please see Figure 5 The rectangular frame 1 has guide rails 6 installed on both sides and the back. Sliding blocks 7 are slidably installed inside the guide rails 6. Pull rods 8 are hinged to the surface of the sliding blocks 7. Support arms 9 are hinged to both sides and the back of the rectangular frame 1. Grip spikes 10 are installed at the front end of the support arms 9. One end of the pull rod 8 is hinged to the middle of the surface of the support arm 9. Hinge supports 11 are installed on both sides and the back of the rectangular frame 1. The hinge supports 11 and one end of the support arms 9 are connected to locking pins 12 and hinged. One end of the locking pins 12 is threaded to a locking knob 13.

[0019] In practical use: Guide rails 6 are installed on both sides and the back of the rectangular frame 1. Sliding blocks 7 are slidably installed inside the guide rails 6. Pull rods 8 are hinged to the surface of the sliding blocks 7. When the rectangular frame 1 is placed on the saline ground for sampling, the support arm 9 is pulled to unfold so that the gripping claws 10 penetrate the soil, thereby making the rectangular frame 1 stable during the sampling process. The rectangular frame 1 is hinged to the support arm 9 through the locking pin 12 inside the hinge support 11. When the support arm 9 is unfolded, the locking knob 13 is tightened to keep the support arm 9 fixed.

[0020] Please see Figure 4 The sampling cylinder 54 has a push plate 14 inside, and handles 15 are installed on both sides of the push plate 14. A stroke groove 16 is opened through the surface of the sampling cylinder 54. The handle 15 passes through the stroke groove 16 and extends to the outside. A press lock 17 is hinged to the surface of the handle 15. The top of the sampling cylinder 54 has slots 18 on both sides, and the press lock 17 is engaged in the slots 18.

[0021] In practical use: The sampling tube 54 is equipped with a push plate 14. When sampling, pull the handle 15 to move the push plate 14 to the top of the sampling tube 54. The push plate 14 is locked in the slot 18 by pressing the latch 17, so that the push plate 14 is fixed. After sampling is completed, press the latch 17 to remove it from the slot 18. The push plate 14 is moved downward by the handle 15. The handle 15 slides along the travel groove 16 and pushes the sampled soil out of the sampling tube 54 through the push plate 14. This replaces the method of manually knocking the sampling tube 54 to remove the soil sample from the collection device, which is convenient for quick sample removal.

[0022] Please see Figure 4 The surface of the sampling cylinder 54 is engraved with scale lines 19.

[0023] In practical use: the scale lines 19 engraved on the surface of the sampling tube 54 are used to indicate the depth at which the sampling tube 54 is driven into the ground.

[0024] A reduction gearbox 51 is installed on the surface of the lifting platform 44. The rotation of the rotating motor 52 drives the connecting flange 53 at the output shaft end to rotate through the reduction gearbox 51 to reduce speed and increase torque. The connecting flange 53 is fixedly connected to the docking flange 55 at the top of the sampling cylinder 54, so that the rotation of the rotating motor 52 drives the sampling cylinder 54 to rotate. The serrations 56 installed at the bottom of the sampling cylinder 54 facilitate the cutting of the soil. Driven by the lifting platform 44, the sample is taken deep into the soil layer. This method replaces the method of auger drilling to sample, which destroys the soil layer and makes it easier to preserve the soil structure of saline frost heave soil intact, thus ensuring the accuracy of subsequent experimental data.

[0025] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for collecting samples of frost heave in saline soil, characterized in that, include: A rectangular frame (1) has an installation cavity (2) inside, and bearing seats (3) are installed at both ends of the inner wall of the installation cavity (2). The lifting adjustment assembly (4) includes a lead screw (41) rotatably installed inside the bearing seats (3) at both ends. A stepper motor (42) is fixedly installed at the top of the mounting cavity (2). The output end of the stepper motor (42) is fixedly connected to the top of the lead screw (41). A lifting block (43) is threadedly connected to the surface of the lead screw (41). A lifting platform (44) is fixedly installed on the surface of the lifting block (43). Limit blocks (45) are fixedly installed on both sides of the back of the lifting platform (44). A slide rail (46) is fixedly installed on both sides of the surface of the rectangular frame (1). The limit block (45) is slidably installed on the surface of the slide rail (46). The sampling assembly (5) includes a reduction gearbox (51) fixedly installed on the surface of the lifting platform (44). The top of the reduction gearbox (51) is provided with a rotating motor (52). The output end of the rotating motor (52) is connected to the input shaft end of the reduction gearbox (51). The output shaft end of the reduction gearbox (51) passes through the bottom of the lifting platform (44) and is equipped with a connecting flange (53). The top of the lifting platform (44) is provided with a sampling cylinder (54). The top of the sampling cylinder (54) is connected with a docking flange (55). The sampling cylinder (54) is fixedly connected to the connecting flange (53) through the docking flange (55). The bottom end of the sampling cylinder (54) is surrounded by serrations (56).

2. The device for collecting samples of frost heave in saline soil according to claim 1, characterized in that: The rectangular frame (1) is equipped with guide rails (6) on both sides and the back. A sliding block (7) is slidably installed inside the guide rail (6). A pull rod (8) is hinged to the surface of the sliding block (7). A support arm (9) is hinged to both sides and the back of the rectangular frame (1). A gripping claw (10) is installed at the front end of the support arm (9). One end of the pull rod (8) is hinged to the middle of the surface of the support arm (9).

3. The device for collecting samples of frost heave in saline soil according to claim 1, characterized in that: The rectangular frame (1) is equipped with hinge supports (11) on both sides and the back. The hinge supports (11) and the support arm (9) are connected to a locking pin (12) at one end, and a locking knob (13) is threaded to one end of the locking pin (12).

4. The device for collecting samples of frost heave in saline soil according to claim 1, characterized in that: The sampling tube (54) is provided with a push plate (14) inside. The push plate (14) is provided with handles (15) on both sides. The surface of the sampling tube (54) is provided with a travel groove (16). The handle (15) passes through the travel groove (16) and extends to the outside. The surface of the handle (15) is hinged with a press lock (17). The top of the sampling tube (54) is provided with slots (18) on both sides. The press lock (17) is engaged in the slots (18).

5. The device for collecting samples of frost heave in saline soil according to claim 1, characterized in that: The sampling tube (54) has scale lines (19) engraved on its surface.

6. The device for collecting samples of frost heave in saline soil according to claim 1, characterized in that: Damping blocks (20) are installed at both ends of the slide rail (46).

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