A device for measuring frost heave displacement of frozen soil using a laser sensor

Abstract

The present invention relates to the technical field of frost heave force test equipment, and in particular to a device for measuring the frost heave displacement of frozen soil using a laser sensor, comprising a base plate, two detachable main side plates being provided on the top of the base plate, two movable secondary side plates being provided between the two main side plates, a laser rangefinder for measuring the frost heave distance of the frozen soil being provided on one of the main side plates, a tamping device for compacting the soil being provided between the two main side plates, a rotatable screw being provided on the top of the tamping device, a first motor being fixed to one end of the screw, and two support rods being fixed to the top of the base plate. The present invention enables the soil compacting roller to compact the soil by coordinating structures such as a power frame, a positioning sleeve, a lifting frame, a soil compacting roller, an intermittent mechanism, and a transmission mechanism, thereby preventing loose soil from affecting the experimental results, making the experimental results more consistent with the actual conditions on site, reducing the error of the experimental results, and increasing the accuracy and reliability of the experimental results.

Description

Technical Field

[0001] The invention relates to the technical field of frost heave force testing equipment, in particular to a device for measuring frost heave displacement of frozen soil using a laser sensor. Background Art

[0002] Soil is a soil medium that is extremely sensitive to temperature. When constructing engineering structures in permafrost areas, they must face two major dangers: frost heave and thaw settlement. They cause great harm to roads, bridges and buildings, such as cracks, subsidence, structural fractures, etc. The freezing process of soil is the result of the interaction between temperature field, moisture field and stress field. The complexity of the freezing process affected by geological conditions, climatic conditions and loads is reflected in the uneven and localized characteristics of frost heave deformation. This brings difficulties to the monitoring of frost heave and thaw settlement processes in laboratory construction or on-site construction sites. Reliable monitoring devices are needed to obtain characterization methods and analysis data of the frost heave process of frozen soil, which requires the use of laser sensors to measure the frost heave displacement of frozen soil.

[0003] Although existing laser sensor devices for measuring frozen soil frost heave displacement can install pressure sensors at different heights to measure the frost heave force at different positions and heights in the soil, when conducting frozen soil frost heave displacement measurement experiments in the laboratory, the soil will be relatively fluffy after excavation. In reality, the soil will be relatively compact after long-term deposition in nature. The relatively fluffy soil will cause the frost heave speed to accelerate or the frost heave amount to increase during the experiment, thereby affecting the accuracy of the experimental results and causing large errors. Therefore, we propose a device for measuring frozen soil frost heave displacement with a laser sensor. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a device for measuring the frost heave displacement of frozen soil using a laser sensor.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A device for measuring frost heave displacement of frozen soil using a laser sensor, comprising:

[0007] A bottom plate, wherein two detachable main side plates are provided on the top of the bottom plate, two movable secondary side plates are provided between the two main side plates, and a laser rangefinder for measuring the frost heave distance of the frozen soil is provided on one of the main side plates;

[0008] A tamping device for compacting the soil is provided between the two main side plates, a rotatable screw is provided on the top of the tamping device, one end of the screw is fixed to a first motor, two support rods are fixed to the top of the bottom plate, the upper half of one of the support rods is fixed to the first motor, and the output shaft of the first motor passes through one of the support rods and is connected to the screw rod;

[0009] The tamping device includes a power frame slidably mounted on a screw rod, a positioning sleeve adapted to the screw rod is provided in the middle of the power frame, a lifting frame that can be raised and lowered is provided below the power frame, a soil compacting roller that can compact the soil is provided at the bottom of the lifting frame, an intermittent mechanism is provided between the power frame and the lifting frame, and a transmission mechanism is provided between the power frame and the soil compacting roller, the power frame is arranged in an inverted U shape, the positioning sleeve is fixed to the top of the power frame, a threaded hole adapted to the screw rod is provided in the middle of the positioning sleeve, the lifting frame is arranged in an I shape, and a transmission shaft is provided at the bottom of the lifting frame, and the soil compacting roller is fixed to the outer wall of the transmission shaft;

[0010] The intermittent mechanism includes a positioning shaft rotatably mounted on the power frame, a transmission sleeve is sleeved on the outer wall of the positioning shaft, a plurality of eccentric disks are fixed on the outer wall of the transmission sleeve, a plurality of brackets are provided on the top of the lifting frame, a plurality of rotatable force wheels are provided on the plurality of brackets, the bottom of the outer wall of the eccentric disk is in contact with the top of the outer wall of the force wheel, the plurality of eccentric disks are eccentrically mounted on the outer wall of the transmission sleeve, and the eccentric disks are driven by the transmission sleeve to rotate eccentrically, so that the eccentric disks push the force wheel to move, and the force wheel drives the lifting frame to move, so that the distance between the power frame and the lifting frame is increased.

[0011] As a preferred technical solution of the present invention, two insertion rods are symmetrically fixed to the lower halves of both ends of the power frame, and sockets compatible with the insertion rods are provided on the upper halves of both ends of the lifting frame. Two springs are symmetrically arranged between the power frame and the lifting frame, two first clips are symmetrically arranged on the power frame, and two second clips are symmetrically arranged on the lifting frame. The top and bottom of the two springs are respectively installed on the first clips and the second clips. The lifting frame drives the second clips to pull the springs to deform, so that the springs generate elastic force to pull the lifting frame up and down, and the lifting frame is limited by the insertion rod, so that the lifting frame moves vertically up and down along the outer wall of the insertion rod.

[0012] As a preferred technical solution of the present invention, the transmission mechanism includes a second motor fixed to the side of the power frame, a power shaft is fixed to the output end of the second motor, two first bevel gears are fixed on the power shaft, and second bevel gears are respectively provided between the two first bevel gears and the transmission sleeve and the soil pressing roller. One end of the positioning shaft passes through the power frame and is fixed to one of the second bevel gears, one end of the transmission shaft passes through the lifting frame and is fixed to the other second bevel gear, and the second bevel gear is meshed with the first bevel gear. The power shaft is driven to rotate by the second motor, so that the power shaft drives the two first bevel gears to rotate, so that one of the first bevel gears drives the transmission sleeve to rotate through it and a second bevel gear, so that the other first bevel gear drives the transmission shaft to rotate through the other second bevel gear, and the transmission shaft drives the soil pressing roller to rotate.

[0013] As an optimal technical solution of the present invention, a first chuck is fixed to the inner wall of the power frame, and a second chuck is provided at one end of the transmission sleeve, and a boss that rotates with the spiral is provided on the side facing each other of the first chuck and the second chuck, and a limiting block is fixed to the outer wall of the end of the positioning shaft away from the first chuck, and a limiting groove adapted to the limiting block is provided at the end of the transmission sleeve away from the second chuck, and the limiting block is driven to rotate by the positioning shaft, so that the cooperation between the limiting block and the limiting groove drives the transmission sleeve to rotate, pushes the transmission sleeve to move, and drives the limiting groove to separate from the limiting block, and at the same time, the transmission sleeve drives the second chuck to contact with the first chuck, and through the cooperation of the boss, the first chuck limits the second chuck, thereby stopping the rotation of the transmission sleeve.

[0014] As a preferred technical solution of the present invention, the inner wall of the power frame is also provided with a threaded sleeve, the outer wall of the second chuck is provided with an outer frame, an adjusting rod is fixed on the top of the outer frame, and the end of the adjusting rod away from the outer frame is provided with a threaded portion adapted to the threaded sleeve, the threaded portion is screwed into the threaded sleeve, and the threaded portion is driven to rotate by rotating the adjusting rod, so that the threaded portion cooperates with the threaded sleeve, so that the adjusting rod moves along the threaded sleeve, so that the adjusting rod drives the outer frame to move, and the outer frame drives the adjusting rod to move through the second chuck.

[0015] As a preferred technical solution of the present invention, an annular groove is provided on the outer wall of the second chuck, and the two ends and the bottom of the outer frame are inserted into the annular groove. The annular groove is limited by the outer frame, and the outer frame remains horizontal when pulling the second chuck to move, so that the outer frame can quickly drive the transmission sleeve to move through the second chuck, making the transmission sleeve smoother and more stable when moving.

[0016] As a preferred technical solution of the present invention, a rotatable rope collecting drum is provided at the bottom of the base plate, two pull ropes are provided between the rope collecting drum and the auxiliary side plate, two main rope buckles are symmetrically provided on the outer wall of the rope collecting drum, and two auxiliary rope buckles are provided on the opposite sides of the lower half of the two auxiliary side plates, and the two ends of the rope collecting drum are respectively fixed to the main rope buckle and the auxiliary rope buckle.

[0017] As a preferred technical solution of the present invention, the eccentric disk is arranged in a diamond shape, and a plurality of chamfers are arranged at the corners of the eccentric disk. The width of the eccentric disk is greater than the width of the force wheel, and the width of the eccentric disk is greater than the distance between the first chuck and the second chuck, so that when the transmission sleeve drives the eccentric disk to move, the eccentric disk is prevented from separating from the force wheel, causing excessive contraction of the lifting frame.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] Through the cooperation of structures such as the power frame, the positioning sleeve, the lifting frame, the soil pressing roller, the intermittent mechanism and the transmission mechanism, the spring drives the lifting frame to move up and down, so that the lifting frame compacts the soil. At the same time, another first bevel gear drives another second bevel gear to rotate, so that the other second bevel gear drives the transmission shaft to rotate, and the transmission shaft drives the soil pressing roller to rotate, so that the soil pressing roller can rotate while moving up and down, so that the soil pressing roller compacts the soil, thereby preventing loose soil from affecting the experimental results, making the experimental results more in line with the actual situation on site, reducing the error of the experimental results, and increasing the accuracy and reliability of the experimental results.

[0020] By rotating the adjusting rod, the adjusting rod drives the threaded part to rotate, and the threaded part cooperates with the threaded sleeve, so that the adjusting rod moves laterally along the inner wall of the threaded sleeve, and the adjusting rod drives the outer frame to move laterally, so that the outer frame cooperates with the annular groove, so that the outer frame pulls the second chuck to move, and the second chuck drives the transmission sleeve to move, so that the limiting groove of the transmission sleeve moves to the outside of the limiting block, and the limiting groove of the transmission sleeve is separated from the limiting block of the positioning shaft, so that the transmission sleeve stops rotating, so that the soil pressing roller can rotate alone to roll and compact the soil, which is convenient for people to perform different compaction methods on different types of soil, and is convenient and quick.

[0021] The second chuck drives the transmission sleeve to move, so that the boss of the second chuck contacts the boss of the first chuck, and the boss of the first chuck is limited by the boss of the second chuck to stop the second chuck from rotating, so that the second chuck drives the transmission sleeve to stop rotating, and the transmission sleeve drives the eccentric disk to stop rotating, so that the longer end of the eccentric disk contacts the force wheel, so that the height of the soil after compaction by the soil roller remains uniform, making the compacted soil more flat, facilitating the subsequent measurement of the frost heave distance of the frozen soil, and the frost heave phenomenon of the frozen soil can be seen more intuitively.

[0022] By rotating the rope-collecting disc, the rope-collecting disc drives the pull rope to be reeled in through the main rope buckle, and the pull rope drives the auxiliary side plate to move through the auxiliary rope buckle, thereby adjusting the distance between the two auxiliary side plates, making the distance between the two auxiliary side plates larger or smaller, so as to limit soil of different volumes and prevent the soil at the edge from being too loose when compacting the soil, thereby affecting the compaction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural diagrams of the present invention;

[0024] Figure 2 This is the second structural diagram of the present invention;

[0025] Figure 3 Schematic diagram of the structure of the rammed earth device of the present invention;

[0026] Figure 4It is a structural schematic diagram of the eccentric disk of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the soil pressing roller of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the lifting frame of the present invention;

[0029] Figure 7 It is a structural schematic diagram of the power shaft of the present invention;

[0030] Figure 8 Schematic diagram of the structure of the first chuck of the present invention;

[0031] Figure 9 It is a structural schematic diagram of the auxiliary side plate of the present invention.

[0032] Among them: 1. bottom plate; 2. main side plate; 3. auxiliary side plate; 4. laser rangefinder; 5. tamping device; 6. rope reel; 7. pull rope; 8. screw; 9. first motor; 501. power frame; 502. positioning sleeve; 503. adjusting rod; 504. lifting frame; 505. soil pressing roller; 506. second motor; 507. power shaft; 508. positioning shaft; 509. transmission sleeve; 510. eccentric disk; 511. force wheel; 512. second bevel gear; 513. first bevel gear; 514. insertion rod; 515. spring; 516. first chuck; 517. second chuck; 518. outer frame. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific examples, but the following examples are only preferred embodiments of the present invention, not all. Based on the examples in the embodiments, other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention. The experimental methods in the following examples, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels.

[0034] Embodiment: The present invention provides Figure 1 The device shown is a laser sensor for measuring frost heave displacement of frozen soil, comprising:

[0035] The bottom plate 1 has two detachable main side plates 2 on the top of the bottom plate 1, and two movable auxiliary side plates 3 are provided between the two main side plates 2. A laser rangefinder 4 for measuring the frost heave distance of frozen soil is provided on one of the main side plates 2. The specific structure and working principle of the laser rangefinder 4 are prior art, and the specific reference may be made to the comparative document (publication number: CN117310732B, named laser rangefinder). The specific structure and working principle of the main side plates 2 and the auxiliary side plates 3 are prior art, and the specific reference may be made to the comparative document (publication number: CN102769991B, named plug-in low-temperature condensation plate device). No further details will be given here.

[0036] As can be seen from the above, when in use, the soil to be tested for frozen soil frost heave displacement is placed inside the base plate 1 to turn the soil into frozen soil, and the displacement of the frozen soil frost heave is measured by the laser rangefinder 4.

[0037] refer to Figures 1-9 As shown, a tamping device 5 for compacting the soil is provided between the two main side plates 2. A rotatable screw rod 8 is provided on the top of the tamping device 5. A first motor 9 is fixed to one end of the screw rod 8. Two support rods are fixed to the top of the bottom plate 1. The upper half of one of the support rods is fixed to the first motor 9. The output shaft of the first motor 9 passes through one of the support rods and is connected to the screw rod 8. The screw rod 8 is driven to rotate by the output shaft of the first motor 9, so that the screw rod 8 drives the tamping device 5 to move back and forth, thereby compacting the soil over a large area.

[0038] The tamping device 5 includes a power frame 501 slidably mounted on the screw rod 8, a positioning sleeve 502 adapted to the screw rod 8 is provided in the middle of the power frame 501, a lifting frame 504 that can be raised and lowered is provided below the power frame 501, and a soil compacting roller 505 that can compact the soil is provided at the bottom of the lifting frame 504, an intermittent mechanism is provided between the power frame 501 and the lifting frame 504, and a transmission mechanism is provided between the power frame 501 and the soil compacting roller 505, the power frame 501 is arranged in an inverted U shape, the positioning sleeve 502 is fixed to the top of the power frame 501, a threaded hole adapted to the screw rod 8 is provided in the middle of the positioning sleeve 502, the lifting frame 504 is arranged in an I shape, and a transmission shaft is provided at the bottom of the lifting frame 504, the soil compacting roller 505 is fixed to the outer wall of the transmission shaft, the bottom of the soil compacting roller 505 is in contact with the soil, and the soil can be compacted by the soil compacting roller 505;

[0039] The intermittent mechanism includes a positioning shaft 508 rotatably mounted on the power frame 501, a transmission sleeve 509 is sleeved on the outer wall of the positioning shaft 508, a plurality of eccentric discs 510 are fixed to the outer wall of the transmission sleeve 509, a plurality of brackets are provided on the top of the lifting frame 504, a plurality of rotatable force wheels 511 are provided on the plurality of brackets, the bottom of the outer wall of the eccentric disc 510 is in contact with the top of the outer wall of the force wheel 511, and the plurality of eccentric discs 510 are eccentrically mounted on the outer wall of the transmission sleeve 509. The eccentric disk 510 is driven to rotate eccentrically through the transmission sleeve 509, so that the eccentric disk 510 pushes the force-bearing wheel 511 to move, and the force-bearing wheel 511 drives the lifting frame 504 to move, so that the distance between the power frame 501 and the lifting frame 504 becomes larger, and the lifting frame 504 drives the soil-pressing roller 505 to move downward, so that the bottom of the soil-pressing roller 505 contacts the soil, and the soil is compacted by the potential energy generated by the downward movement of the soil-pressing roller 505 and the weight of the soil-pressing roller 505 itself, which is convenient and fast.

[0040] The lower half of the two ends of the power frame 501 is symmetrically fixed with two insertion rods 514, and the upper half of the two ends of the lifting frame 504 is provided with a socket compatible with the insertion rod 514. Two springs 515 are symmetrically arranged between the power frame 501 and the lifting frame 504. Two first clips are symmetrically arranged on the power frame 501, and two second clips are symmetrically arranged on the lifting frame 504. The top and bottom of the two springs 515 are respectively installed on the first clip and the second clip. The lifting frame 504 drives the second clip to pull the spring 515 to deform, so that the spring 515 generates elastic force to pull the lifting frame 504 up and down, and the lifting frame 504 is limited by the insertion rod 514, so that the lifting frame 504 moves vertically up and down along the outer wall of the insertion rod 514, preventing the lifting frame 504 from deviating during lifting, causing the soil to be not compacted uniformly when the soil pressing roller 505 presses the soil.

[0041] The transmission mechanism includes a second motor 506 fixed to the side of the power frame 501, a power shaft 507 is fixed to the output end of the second motor 506, two first bevel gears 513 are fixed to the power shaft 507, and second bevel gears 512 are respectively provided between the two first bevel gears 513 and the transmission sleeve 509 and the soil pressing roller 505. One end of the positioning shaft 508 passes through the power frame 501 and is fixed to one of the second bevel gears 512. One end of the transmission shaft passes through the lifting frame 504 and is fixed to the other second bevel gear 512. The second bevel gear 512 is fixed to the first bevel gear 513 and the second bevel gear 512 is fixed to the first bevel gear 513. 13 are engaged, and the second motor 506 drives the power shaft 507 to rotate, so that the power shaft 507 drives the two first bevel gears 513 to rotate, so that one of the first bevel gears 513 drives the transmission sleeve 509 to rotate through a second bevel gear 512, so that the other first bevel gear 513 drives the transmission shaft to rotate through the other second bevel gear 512, and the transmission shaft drives the soil compacting roller 505 to rotate, and the rotating soil compacting roller 505 rolls and compacts the surface of the soil, thereby simulating the movement of a vehicle on the soil, making the effect of soil compaction closer to the natural environment.

[0042] The eccentric disk 510 is set to be diamond-shaped, and multiple chamfers are set at the corners of the eccentric disk 510. The width of the eccentric disk 510 is greater than the width of the force wheel 511, and the width of the eccentric disk 510 is greater than the distance between the first chuck 516 and the second chuck 517. Therefore, when the transmission sleeve 509 drives the eccentric disk 510 to move, the eccentric disk 510 is prevented from separating from the force wheel 511, causing excessive contraction of the lifting frame 504.

[0043] By adopting the above technical solutions:

[0044] When in use, the transmission shaft of the second motor 506 drives the power shaft 507 to rotate, so that the power shaft 507 drives the two first bevel gears 513 to rotate, so that the two first bevel gears 513 drive the two second bevel gears 512 meshed therewith to rotate, so that one of the second bevel gears 512 drives the positioning shaft 508 to rotate, so that the positioning shaft 508 drives the transmission sleeve 509 to rotate, so that the transmission sleeve 509 drives the eccentric disk 510 to rotate eccentrically, so that the eccentric disk 510 drives the force-bearing wheel 511 to move, so that the force-bearing wheel 511 moves through the bracket, so that the bracket drives the lifting frame 504 to move, The lifting frame 504 drives the spring 515 to deform, so that the elastic force generated by the spring 515 pulls the lifting frame 504 to move up and down, so that the spring 515 drives the lifting frame 504 to move up and down, so that the lifting frame 504 compacts the soil. At the same time, the other first bevel gear 513 drives the other second bevel gear 512 to rotate, so that the other second bevel gear 512 drives the transmission shaft to rotate, so that the transmission shaft drives the soil pressing roller 505 to rotate, so that the soil pressing roller 505 can rotate while moving up and down, so that the centrifugal force generated by the soil pressing roller 505 further compacts the soil, thereby improving the compaction effect.

[0045] At the same time, the output shaft of the first motor 9 can also be used to drive the screw rod 8 to rotate, so that the screw rod 8 cooperates with the threaded hole of the positioning sleeve 502, so that the positioning sleeve 502 can move back and forth laterally along the outer wall of the screw rod 8, and the positioning sleeve 502 drives the lifting frame 504 to move back and forth laterally through the power frame 501, so that the lifting frame 504 drives the soil roller 505 to move back and forth laterally, thereby compacting the soil over a large area and improving work efficiency.

[0046] Secondly, reference Figures 1-9 As shown,

[0047] A first chuck 516 is fixed to the inner wall of the power frame 501, and a second chuck 517 is provided at one end of the transmission sleeve 509. The first chuck 516 and the second chuck 517 are both provided with a boss that rotates with the spiral on the side facing each other. A limiting block is fixed to the outer wall of the end of the positioning shaft 508 away from the first chuck 516, and a limiting groove that matches the limiting block is provided at the end of the transmission sleeve 509 away from the second chuck 517. The limiting block is driven to rotate by the positioning shaft 508, so that the cooperation between the limiting block and the limiting groove drives the transmission sleeve 509 to rotate, pushing the transmission sleeve 509 to move, so that the transmission sleeve 509 drives the limiting groove to separate from the limiting block, and at the same time, the transmission sleeve 509 drives the second chuck 517 to contact the first chuck 516. Through the cooperation of the boss, the first chuck 516 limits the second chuck 517, thereby stopping the rotation of the transmission sleeve 509.

[0048] The inner wall of the power frame 501 is also provided with a threaded sleeve, and the outer wall of the second chuck 517 is provided with an outer frame 518. An adjusting rod 503 is fixed to the top of the outer frame 518. The end of the adjusting rod 503 away from the outer frame 518 is provided with a threaded portion adapted to the threaded sleeve. The threaded portion is screwed into the threaded sleeve. By rotating the adjusting rod 503, the threaded portion is driven to rotate, so that the threaded portion and the threaded sleeve cooperate, so that the adjusting rod 503 moves along the threaded sleeve, so that the adjusting rod 503 drives the outer frame 518 to move, and the outer frame 518 drives the adjusting rod 503 to move through the second chuck 517.

[0049] By adopting the above technical solutions:

[0050] When in use, rotate the adjusting rod 503 so that the adjusting rod 503 drives the threaded part to rotate, so that the threaded part cooperates with the threaded sleeve, so that the adjusting rod 503 moves laterally along the inner wall of the threaded sleeve, so that the adjusting rod 503 drives the outer frame 518 to move laterally, so that the outer frame 518 cooperates with the annular groove, so that the outer frame 518 pulls the second chuck 517 to move, so that the second chuck 517 drives the transmission sleeve 509 to move, so that the limiting groove of the transmission sleeve 509 moves to the outside of the limiting block, so that the limiting groove of the transmission sleeve 509 is separated from the limiting block of the positioning shaft 508, so that the transmission sleeve 509 stops rotating, so that the soil pressing roller 505 can rotate alone to roll and compact the soil, which is convenient for people to perform different types of soil compaction treatments in different ways, which is convenient and fast.

[0051] Again, reference Figures 1-9 As shown, the outer wall of the second chuck 517 is provided with an annular groove, and the two ends and the bottom of the outer frame 518 are inserted into the annular groove. The annular groove is limited by the outer frame 518. The outer frame 518 keeps the second chuck 517 horizontal when it moves, so that the outer frame 518 can quickly drive the transmission sleeve 509 to move through the second chuck 517, making the transmission sleeve 509 smoother and more stable when moving.

[0052] By adopting the above technical solutions:

[0053] During use, when the second chuck 517 drives the transmission sleeve 509 to move, the boss of the second chuck 517 contacts the boss of the first chuck 516, and the boss of the second chuck 517 is limited by the boss of the first chuck 516, so that the second chuck 517 stops rotating, and the second chuck 517 drives the transmission sleeve 509 to stop rotating, and the transmission sleeve 509 drives the eccentric disk 510 to stop rotating, so that the longer end of the eccentric disk 510 contacts the force wheel 511, so that the height of the soil after compaction by the soil roller 505 remains uniform, making the compacted soil more flat, facilitating the subsequent measurement of the frost heave distance of the frozen soil, and the frost heave phenomenon of the frozen soil can be seen more intuitively.

[0054] Finally, reference Figures 1-9 As shown, a rotatable rope-collecting drum 6 is provided at the bottom of the base plate 1, two pull ropes 7 are provided between the rope-collecting drum 6 and the auxiliary side plate 3, two main rope buckles are symmetrically provided on the outer wall of the rope-collecting drum 6, and two auxiliary rope buckles are provided on the opposite sides of the lower half of the two auxiliary side plates 3, and the two ends of the rope-collecting drum 6 are respectively fixed to the main rope buckle and the auxiliary rope buckle.

[0055] By adopting the above technical solutions:

[0056] When in use, the rope-collecting disc 6 is rotated so that the rope-collecting disc 6 drives the pull rope 7 to be reeled in through the main rope buckle, and the pull rope 7 drives the auxiliary side plate 3 to move through the auxiliary rope buckle, thereby adjusting the distance between the two auxiliary side plates 3, making the distance between the two auxiliary side plates 3 larger or smaller, so as to limit soil of different volumes and prevent the soil at the edge from being too loose when compacting the soil, thereby affecting the compaction effect.

[0057] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A device for measuring frozen soil frost heave displacement using a laser sensor, characterized in that: include: A bottom plate (1), wherein two detachable main side plates (2) are provided on the top of the bottom plate (1), two movable secondary side plates (3) are provided between the two main side plates (2), and a laser rangefinder (4) for measuring the frost heave distance of frozen soil is provided on one of the main side plates (2); A tamping device (5) for compacting the soil is provided between the two main side plates (2), a rotatable screw rod (8) is provided on the top of the tamping device (5), a first motor (9) is fixed to one end of the screw rod (8), and two support rods are fixed to the top of the bottom plate (1); The tamping device (5) comprises a power frame (501) slidably mounted on a screw rod (8), a positioning sleeve (502) adapted to the screw rod (8) is provided in the middle of the power frame (501), a lifting frame (504) that can be raised and lowered is provided below the power frame (501), a soil compacting roller (505) that can compact the soil is provided at the bottom of the lifting frame (504), an intermittent mechanism is provided between the power frame (501) and the lifting frame (504), and a transmission mechanism is provided between the power frame (501) and the soil compacting roller (505), a threaded hole adapted to the screw rod (8) is provided in the middle of the positioning sleeve (502), a transmission shaft is provided at the bottom of the lifting frame (504), and the soil compacting roller (505) is fixed to the outer wall of the transmission shaft; The intermittent mechanism includes a positioning shaft (508) rotatably mounted on a power frame (501), an outer wall of the positioning shaft (508) is sleeved with a transmission sleeve (509), a plurality of eccentric disks (510) are fixed to the outer wall of the transmission sleeve (509), a plurality of brackets are provided on the top of the lifting frame (504), a plurality of rotatable force wheels (511) are provided on the plurality of brackets, the bottom of the outer wall of the eccentric disk (510) is in contact with the top of the outer wall of the force wheel (511), and the plurality of eccentric disks (510) are eccentrically mounted on the outer wall of the transmission sleeve (509).

2. The device for measuring frozen soil frost heave displacement using a laser sensor according to claim 1, characterized in that: Two insertion rods (514) are symmetrically fixed to the lower halves of both ends of the power frame (501), and sockets compatible with the insertion rods (514) are provided on the upper halves of both ends of the lifting frame (504). Two springs (515) are symmetrically provided between the power frame (501) and the lifting frame (504), two first buckles are symmetrically provided on the power frame (501), and two second buckles are symmetrically provided on the lifting frame (504), and the tops and bottoms of the two springs (515) are respectively mounted on the first buckle and the second buckle.

3. The device for measuring frozen soil frost heave displacement using a laser sensor according to claim 1, characterized in that: The transmission mechanism comprises a second motor (506) fixed to a side of a power frame (501); a power shaft (507) is fixed to an output end of the second motor (506); two first bevel gears (513) are fixed to the power shaft (507); second bevel gears (512) are respectively provided between the two first bevel gears (513) and the transmission sleeve (509) and the soil pressing roller (505); one end of the positioning shaft (508) passes through the power frame (501) and is fixed to one of the second bevel gears (512); one end of the transmission shaft passes through the lifting frame (504) and is fixed to the other second bevel gear (512); and the second bevel gear (512) is meshed with the first bevel gear (513).

4. The device for measuring frozen soil frost heave displacement using a laser sensor according to claim 1, characterized in that: A first chuck (516) is fixed to the inner wall of the power frame (501), a second chuck (517) is provided at one end of the transmission sleeve (509), bosses that rotate with the spiral are provided on the sides of the first chuck (516) and the second chuck (517) facing each other, a limiting block is fixed to the outer wall of the end of the positioning shaft (508) away from the first chuck (516), and a limiting groove that is adapted to the limiting block is provided at the end of the transmission sleeve (509) away from the second chuck (517).

5. The device for measuring frozen soil frost heave displacement using a laser sensor according to claim 4, characterized in that: The inner wall of the power frame (501) is further provided with a threaded sleeve, the outer wall of the second chuck (517) is provided with an outer frame (518), an adjusting rod (503) is fixed to the top of the outer frame (518), and an end of the adjusting rod (503) away from the outer frame (518) is provided with a threaded portion adapted to the threaded sleeve.

6. The device for measuring frozen soil frost heave displacement using a laser sensor according to claim 5, characterized in that: An annular groove is provided on the outer wall of the second chuck (517), and both ends and the bottom of the outer frame (518) are inserted into the annular groove.

7. The device for measuring frozen soil frost heave displacement using a laser sensor according to claim 1, characterized in that: A rotatable rope collecting disc (6) is provided at the bottom of the base plate (1), two pull ropes (7) are provided between the rope collecting disc (6) and the auxiliary side plate (3), two main rope buckles are symmetrically provided on the outer wall of the rope collecting disc (6), and two auxiliary rope buckles are provided on the opposite sides of the lower half of the two auxiliary side plates (3).

8. The device for measuring frozen soil frost heave displacement using a laser sensor according to claim 1, characterized in that: The eccentric disk (510) is configured in a diamond shape, and a plurality of chamfers are provided at the corners of the eccentric disk (510). The width of the eccentric disk (510) is greater than the width of the force-bearing wheel (511), and the width of the eccentric disk (510) is greater than the distance between the first chuck (516) and the second chuck (517).

Images