Sample cutting device for soil test

Abstract

The utility model discloses a soil test sample cutting device which comprises a base, a support, a soil body clamping mechanism, a mechanical arm, a rotator and a cutting line, the support is installed at the upper end of the base, a cavity is formed in the middle of the support, the soil body clamping mechanism is installed in the cavity, and the mechanical arm is further installed on the side edge of the soil body clamping mechanism in the cavity. A rotator is installed at the execution end of the mechanical arm, and the output end of the rotator is connected with a cutting line. The soil body clamping mechanism, the mechanical arm and other structures are installed through the support and correspondingly serve as protection structures, a soil sample to be machined can be clamped through the soil body clamping mechanism, the soil sample to be machined can be cut according to needs through the rotator and the cutting line, and meanwhile the soil sample to be machined can be cut through the rotating device and the cutting line. Through flexible cutting line cutting, disturbance to a soil body in the cutting process can be reduced, errors caused by disturbance are avoided, the influence on the structure and the property of a soil sample is reduced, and the mechanical arm can move and drive the cutting disc formed by rotation of the cutting line according to needs.

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical cutting, in particular to a geotechnical test sample cutting device. Background Art

[0002] During geotechnical testing, there are two types of soil samples to choose from: remolded soil and undisturbed soil. Remolded soil is undisturbed soil that has been dried, crushed, and then reshaped to mimic the original soil according to its density and moisture content. This method is used in most indoor tests.

[0003] Nowadays, the demand for investigation and research on field conditions is becoming increasingly strong. The study of soil properties during the investigation requires the use of undisturbed original soil. At present, in the preparation process of original soil samples for geotechnical tests, for the preparation of original soil samples, the soil samples are generally cut into shape using a soil cutting device that is matched with the test instrument. The structural forms of the soil cutting discs produced by various instrument manufacturers on the market have some differences in the fixed frame. The parts used to place and fix the soil samples are basically the same. A rotatable disc is installed on the upper and lower parts of the fixed frame. When preparing the sample, the soil sample is placed between the two discs and clamped. Then the fixed soil sample disc is continuously rotated and cut with a soil cutter or wire saw.

[0004] However, cutting soil with a cutter or wire saw can cause disturbance. This means that when cutting soil, the cutter or wire saw damages the original soil structure, causing the soil sample to lose its undisturbed state, affecting its original structure and properties. The disturbance caused by cutting can affect the physical and mechanical properties of the soil sample, thereby affecting the results of subsequent geotechnical tests.

[0005] Therefore, there is an urgent need for a geotechnical test sample cutting device to solve the problem that using a soil cutter or a wire saw to cut the soil will cause disturbance, thereby affecting the accuracy of subsequent tests. Utility Model Content

[0006] The utility model aims at the deficiencies in the prior art and provides a geotechnical test sample cutting device to solve the problem that when using a soil cutter or a wire saw to cut the soil, disturbance may occur, thereby affecting the accuracy of subsequent tests.

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

[0008] A geotechnical test sample cutting device, characterized in that it includes a base, a bracket, a soil clamping mechanism, a robotic arm, a rotator and a cutting line, the upper end of the base is installed with a bracket, the middle of the bracket is a cavity, the front end of the bracket is an opening, and a soil clamping mechanism is installed in the cavity, and a robotic arm is also installed on the side of the soil clamping mechanism in the cavity, the execution end of the robotic arm is installed with a rotator, the output end of the rotator is connected to the cutting line, the rotator is used to drive the cutting line to rotate in a disc shape, and the robotic arm is used to drive the rotating cutting line to cut the soil clamped by the soil clamping mechanism.

[0009] To optimize the above technical solutions, specific measures taken also include:

[0010] Furthermore, the soil clamping mechanism includes a DC motor, a lower soil cutting disc, an upper soil cutting disc connecting shaft and an upper soil cutting disc. A DC motor is installed at the upper end of the base, and the output shaft of the DC motor is connected to the lower soil cutting disc. The top end in the cavity of the bracket is rotatably connected to the upper soil cutting disc through the upper soil cutting disc connecting shaft. The lower soil cutting disc and the upper soil cutting disc are arranged correspondingly up and down.

[0011] Furthermore, a retaining ring is provided at the upper end of the base and located outside the DC motor.

[0012] Furthermore, a soil collecting trough is provided at the upper end of the base, and the DC motor is installed in the soil collecting trough.

[0013] Furthermore, the upper end surface of the lower soil cutting disc and the lower end surface of the upper soil cutting disc are respectively provided with vertically arranged fixing needles.

[0014] Furthermore, the upper cutting disc connecting shaft adopts an electric telescopic rod, the upper end surface of the lower cutting disc and the lower end surface of the upper cutting disc are respectively provided with infrared sensors, and the infrared sensors are electrically connected to the electric telescopic rod.

[0015] Furthermore, the robotic arm is a three-axis robotic arm.

[0016] Furthermore, a movable groove is provided at the upper end of the base, a rack is provided on one side of the movable groove, and the lower end of the robotic arm is connected to a gear that can engage with the rack through a drive motor. The movable groove is used to guide the robotic arm to move closer to or away from the soil clamped by the soil clamping mechanism, and the drive motor is used to drive the gear to drive the robotic arm to move along the rack in the movable groove.

[0017] The top end of the lifting link is installed in the rotation between thesaurus and the lower frame, and the lifting link is installed in the rotation between the bridge and the lower frame, and the lifting link is installed in the rotation between the bridge and the lower frame.

[0018] Furthermore, it also includes an opening and closing door. The left and right side walls at the front end opening of the upper bracket and the left and right side walls at the front end opening of the lower bracket are provided with sliding grooves that pass through from top to bottom. The opening and closing door adopts a corrugated structure. The upper end of the opening and closing door is installed on the lower end of the upper beam plate and is located at the front end opening of the upper bracket. The two sides of the opening and closing door are respectively slidably set in the sliding grooves on both sides.

[0019] The beneficial effects of the utility model are:

[0020] The utility model installs the soil clamping mechanism and the mechanical arm and other structures through the bracket, and the corresponding ones serve as protective structures. The soil clamping mechanism can clamp the soil sample to be processed, and the rotator and the cutting line can cut the soil to be processed as needed. At the same time, cutting with the tough cutting line can reduce the disturbance of the soil during the cutting process, avoid the error caused by the disturbance, and reduce the influence on the structure and properties of the soil sample, thus solving the problem that the use of a soil cutter or a wire saw to cut the soil will cause disturbance, thereby affecting the accuracy of subsequent tests. The mechanical arm can realize the mobile drive of the cutting disc formed by the rotation of the cutting line as needed.

[0021] The utility model has a fast cutting speed for undisturbed soil, high cutting precision, and small cutting disturbance; it is easy to operate, and can control the rotation speed of the soil sample through a DC motor, and can also adjust the cutting point through a mechanical arm, or adjust the cutting force through a rotator, which is more convenient for controlling the size of the soil sample to be produced; and the use of cutting line rotation cutting is conducive to reducing the degree of disturbance to the soil body, avoiding the complexity and inconvenience of manual operation, and improving work efficiency.

[0022] The utility model arranges the bracket so that when the spring buckle is engaged with the second positioning hole, the upper bracket shrinks in the sliding cavity of the lower bracket to facilitate the movement of the device; when the spring buckle is engaged with the first positioning hole, the upper bracket extends out of the sliding cavity of the lower bracket to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the internal structure of a geotechnical test sample cutting device proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the overall structure of a geotechnical test sample cutting device proposed by the present utility model;

[0025] Figure 3 This is a top view of the structure of a geotechnical test sample cutting device proposed by the present utility model;

[0026] Figure 4 for Figure 3 Schematic diagram of the cross section at "AA" in the figure;

[0027] Figure 5 This is a schematic structural diagram of a mechanical arm of a geotechnical test sample cutting device proposed in the present invention;

[0028] Figure 6 This is a schematic diagram of the closed door of a geotechnical test sample cutting device proposed in the present invention;

[0029] Figure 7 This is a schematic diagram of the opening and closing door of a geotechnical test sample cutting device proposed in the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the support portion of a geotechnical test sample cutting device proposed in the present invention;

[0031] Figure 9 This is a schematic diagram of the contraction of the upper bracket and the lower bracket of the geotechnical test sample cutting device proposed by the utility model.

[0032] Figure numerals: 1. Control switch, 2. Base, 3. Bracket, 4. DC motor, 5. Retaining ring, 6. Soil collecting trough, 7. Lower cutting disc, 8. Fixing needle, 9. Moving trough, 10. Guide rail, 11. Robotic arm, 12. Rotator, 13. Pressure sensor, 14. Cutting line, 15. Upper cutting disc, 16. Upper cutting disc connecting shaft, 17. Infrared sensor, 18. Sliding rod, 19. Spring clip, 20. First positioning hole, 21. Second positioning hole, 100. Transmission line, 101. Battery, 102. Upper beam, 200. Telescopic pull rod, 201. Carrying handle, 300. Bracket side wall, 301. Opening and closing door. DETAILED DESCRIPTION

[0033] The utility model is described in detail below with reference to the accompanying drawings.

[0034] As attached Figure 1As shown, a geotechnical test sample cutting device according to an embodiment of the present invention includes a base 2, a bracket 3, a soil clamping mechanism, a robotic arm 11, a rotator 12 and a tough cutting line 14. The bracket 3 is installed at the upper end of the base 2, the middle of the bracket 3 is a cavity, the front end of the bracket 3 is an opening, and a soil clamping mechanism is installed in the cavity. A robotic arm 11 is also installed on the side of the soil clamping mechanism in the cavity, and a rotator 12 is installed at the execution end of the robotic arm 11. The output end of the rotator 12 is connected to the cutting line 14, and the rotator 12 is used to drive the cutting line 14 to rotate in a disc shape. The robotic arm 11 is used to drive the rotating cutting line 14 to cut the soil clamped by the soil clamping mechanism.

[0035] The utility model installs structures such as the soil clamping mechanism and the mechanical arm 11 through the bracket 3, and serves as a corresponding protective structure. The soil clamping mechanism can clamp the soil sample to be processed, and the rotator 12 and the cutting line 14 can cut the soil to be processed as needed. At the same time, cutting with the tough cutting line 14 can reduce the disturbance of the soil during the cutting process, avoid errors caused by disturbance, and reduce the impact on the structure and properties of the soil sample, solving the problem that the use of a soil cutter or a wire saw to cut the soil will cause disturbance, thereby affecting the accuracy of subsequent tests. The mechanical arm 11 can realize the mobile drive of the cutting disc formed by the rotation of the cutting line 14 as needed.

[0036] The present invention cuts undisturbed soil at a high speed, with high cutting precision and minimal disturbance. It is easy to operate, and the cutting point can be adjusted and controlled via the robotic arm 11, or the cutting force can be adjusted via the rotator 12, making it easy to control the size of the soil sample. In this embodiment, the use of the cutting line 14 for rotary cutting reduces soil disturbance, avoids the complexity and inconvenience of manual operation, and improves work efficiency.

[0037] In another specific embodiment, the soil clamping mechanism includes a DC motor 4, a lower soil cutting disc 7, an upper soil cutting disc connecting shaft 16, and an upper soil cutting disc 15. The DC motor 4 is mounted on the upper end of the base 2, and the output shaft of the DC motor 4 is connected to the lower soil cutting disc 7. The top end of the bracket 3 within the cavity is rotatably connected to the upper soil cutting disc 15 via the upper soil cutting disc connecting shaft 16. The lower soil cutting disc 7 and the upper soil cutting disc 15 are arranged in a vertically corresponding manner. This allows the DC motor 4 to control the rotation speed of the soil sample, the robotic arm 11 to adjust the cutting point, and the rotator 12 to adjust the cutting force, making it easier to control the size of the soil sample to be produced.

[0038] Wherein, the upper end of the base 2 and the outer side of the DC motor 4 are provided with a circle of retaining ring 5. In this way, the retaining ring 5 is used to prevent the broken soil from affecting the use of the DC motor 4.

[0039] Wherein, the upper end of the base 2 is provided with a soil collecting trough 6, and the DC motor 4 is installed in the soil collecting trough 6. In this way, the crushed soil can be collected through the soil collecting trough 6.

[0040] The upper end surface of the lower soil cutting disc 7 and the lower end surface of the upper soil cutting disc 15 are respectively provided with vertically arranged fixing pins 8. In this way, the clamping strength of the soil sample can be reinforced by the fixing pins 8, and the soil sample can be fastened.

[0041] The upper cutting disc connecting shaft 16 is an electric telescopic rod. Infrared sensors 17 are located on the upper end of the lower cutting disc 7 and the lower end of the upper cutting disc 15. These sensors are electrically connected to the electric telescopic rod. The infrared sensors 17 are used to control the vertical movement of the electric telescopic rod, thereby achieving automatic induction clamping of the soil sample.

[0042] As attached Figure 5 As shown, in another embodiment, the robotic arm 11 is a three-axis robotic arm. This allows the three-axis robotic arm to independently meet the needs of the rotator 12 and the cutting line 14. The robotic arm 11 can be equipped with a hollow rotating platform BBT60, and the rotator 12 can use a 220V adjustable forward and reverse motor, ZTN120.

[0043] In another specific embodiment, a movable groove 9 is provided at the upper end of the base 2, and a rack is provided on one side of the movable groove 9. The lower end of the robotic arm 11 is connected to a gear that can mesh with the rack through a drive motor. The movable groove 9 is used to guide the robotic arm 11 to move closer to or away from the soil clamped by the soil clamping mechanism, and the drive motor is used to drive the gear to drive the robotic arm 11 to move along the rack in the movable groove 9. In this embodiment, the movable groove 9 can be straight, cross or L-shaped to meet different usage requirements, for example, so that the robotic arm 11 can be moved and controlled to approach the soil, or away from the soil and the user. In this embodiment, a guide rail 10 can be provided in the movable groove 9 as needed to ensure smooth movement.

[0044] In another specific embodiment, the rotator 12 is a rotary motor, and the rotating shaft of the rotary motor is connected to one end of the cutting line 14. In this embodiment, a pressure sensor 13 can also be provided at the connection between the rotator 12 and the cutting line 14. The pressure sensor 13 can detect the force feedback from the cutting line 14 as needed, and thus control the cutting force.

[0045] As attached Figure 8As shown, in another specific embodiment, the bracket 3 includes an upper bracket, a lower bracket, an upper beam plate 102 and a telescopic pull rod 200, the upper end of the base 2 is connected to the annular lower bracket, and the front end of the lower bracket is provided with an opening, a vertical sliding cavity is provided in the side wall of the lower bracket, and the upper end of the sliding cavity is open, the upper bracket can be inserted from top to bottom and slidably set in the sliding cavity, the front end of the upper bracket is also correspondingly provided with an opening, and the top of the upper bracket is provided with an upper beam plate 102; the telescopic pull rod 200 includes a slide rod 18 and a slide rail, and a vertical slide rail is also provided in the sliding cavity of the lower bracket, the upper end of the slide rail is provided with a first positioning hole 20 communicating with the outer side of the lower bracket, and the lower end of the slide rail is provided with a second positioning hole 21 communicating with the outer side of the lower bracket, the side wall of the upper bracket is correspondingly provided with a vertical slide rod 18, and the lower end of the slide rod 18 is provided with several spring clips 19, which can be snapped into the first positioning hole 20 or the second positioning hole 21, and the slide rod 18 is slidably connected to the slide rail.

[0046] Therefore, as attached Figure 9 As shown, when the spring clip 19 is engaged with the second positioning hole 21, the upper bracket is retracted in the sliding cavity of the lower bracket to facilitate the movement of the device; when the spring clip 19 is engaged with the first positioning hole 20, the upper bracket extends out of the sliding cavity of the lower bracket to meet the use requirements. In this embodiment, the upper bracket can be provided with a limiting mechanism as needed to ensure that it cannot slip out of the sliding cavity of the lower bracket. In this embodiment, the slide rail does not affect the up and down movement of the upper bracket, and the up and down movement of the upper bracket does not cause interference with the soil clamping mechanism. In this embodiment, the upper cutting disc connecting shaft 16 can pass through the upper beam plate 102 of the bracket 3 and be installed on the upper beam plate 102 of the bracket 3 through a fixing ring and fastening screws.

[0047] As attached Figure 2 , Attachment Figure 6 and attached Figure 7 As shown, it also includes an opening and closing door 301. The left and right side walls at the front opening of the upper bracket and the left and right side walls at the front opening of the lower bracket are each provided with a vertically extending sliding groove. The opening and closing door 301 adopts a corrugated structure. The upper end of the opening and closing door 301 is mounted on the lower end of the upper beam plate 102 and is located at the front opening of the upper bracket. The two sides of the opening and closing door 301 slide in the sliding grooves on either side. In this way, when in use, the lower end of the opening and closing door 301 can be directly pushed and pulled as needed, causing the corrugated structure to automatically expand and contract to meet the needs of opening and closing the front opening. The opening and closing door 301 can be used to block the crushed soil inside. In another embodiment, the opening and closing door 301 can be an electric rolling door, and a motor or corresponding drive system can be provided as needed to control the upward and downward expansion and contraction of the curtain slats.

[0048] As attached Figure 3 As shown, in this embodiment, a carrying handle 201 is further provided on the outer top of the bracket 3 to facilitate the movement and carrying of the device.

[0049] As attached Figure 4 As shown, in another specific embodiment, a control switch 1, a transmission line 100 and a battery 102 may also be provided. The above-mentioned electrical equipment can be electrically connected to the battery 102 and the control switch 1 respectively through the transmission line 100. The battery 102 is a rechargeable lithium battery with long battery life. The control switch 1 can control the above-mentioned electrical equipment respectively.

[0050] In another specific embodiment, the support sidewall 300 of the upper support may be configured as an acrylic glass plate for easy observation, and the lower support may be configured as a metal material.

[0051] During operation of the present invention, one implementation method is: directly place the soil sample in the device, the device senses and performs a series of operations through the infrared sensor 17, the lower cutting disc 15 and the upper cutting disc 7 automatically adjust to the sample height, and after the adjustment is completed, the mechanical arm 11 drives the cutting line 14 to perform cutting work, which is maintained by a small program in the mechanical arm 11.

[0052] Another embodiment is to manually control the control switch 1 for semi-automatic cutting. By adjusting the upper cutting disc connecting shaft 16 to an appropriate height, the soil sample is placed on the lower cutting disc 7 and engaged with the fixing pin 8 to secure it. The upper cutting disc connecting shaft 16 is then adjusted to an appropriate height so that the upper cutting disc 15 contacts the soil sample. The control switch 1 is then operated to adjust the rotation speed of the DC motor 4 and the use and movement of the robotic arm 11 to complete the cutting of the soil sample.

[0053] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. used in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the utility model. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of the utility model without substantially changing the technical content.

[0054] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be pointed out that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A geotechnical test sample cutting device, characterized by: The invention comprises a base (2), a bracket (3), a soil clamping mechanism, a mechanical arm (11), a rotator (12) and a cutting line (14), wherein the upper end of the base (2) is provided with the bracket (3), the middle of the bracket (3) is a cavity, the front end of the bracket (3) is an opening, and the soil clamping mechanism is provided in the cavity, and the mechanical arm (11) is provided on the side of the soil clamping mechanism in the cavity, the execution end of the mechanical arm (11) is provided with the rotator (12), the output end of the rotator (12) is connected to the cutting line (14), the rotator (12) is used to drive the cutting line (14) to rotate in a disc shape, and the mechanical arm (11) is used to drive the rotating cutting line (14) to cut the soil clamped by the soil clamping mechanism.

2. A geotechnical test sample cutting device according to claim 1, characterized in that: The soil clamping mechanism comprises a DC motor (4), a lower soil cutting disc (7), an upper soil cutting disc connecting shaft (16), and an upper soil cutting disc (15); the DC motor (4) is mounted on the upper end of the base (2); the output shaft of the DC motor (4) is connected to the lower soil cutting disc (7); the top end of the bracket (3) in the cavity is rotatably connected to the upper soil cutting disc (15) via the upper soil cutting disc connecting shaft (16); the lower soil cutting disc (7) and the upper soil cutting disc (15) are arranged in correspondence with each other.

3. A geotechnical test sample cutting device according to claim 2, characterized in that: A retaining ring (5) is provided at the upper end of the base (2) and located outside the DC motor (4).

4. The geotechnical test sample cutting device according to claim 2, characterized in that: A soil collecting trough (6) is provided at the upper end of the base (2), and the DC motor (4) is installed in the soil collecting trough (6).

5. The geotechnical test sample cutting device according to claim 2, characterized in that: The upper end surface of the lower soil cutting disc (7) and the lower end surface of the upper soil cutting disc (15) are both provided with vertically arranged fixing needles (8).

6. The geotechnical test sample cutting device according to claim 2, characterized in that: The upper soil cutting disc connecting shaft (16) adopts an electric telescopic rod, and the upper end surface of the lower soil cutting disc (7) and the lower end surface of the upper soil cutting disc (15) are respectively provided with an infrared sensor (17), and the infrared sensor (17) is electrically connected to the electric telescopic rod.

7. The geotechnical test sample cutting device according to claim 1, characterized in that: The robotic arm (11) is a three-axis robotic arm.

8. The geotechnical test sample cutting device according to claim 1, characterized in that: A movable groove (9) is provided at the upper end of the base (2), a rack is provided on one side of the movable groove (9), and a gear that can mesh with the rack is connected to the lower end of the mechanical arm (11) via a drive motor. The movable groove (9) is used to guide the mechanical arm (11) to move toward or away from the soil clamped by the soil clamping mechanism, and the drive motor is used to drive the gear to drive the mechanical arm (11) to move along the rack in the movable groove (9).

9. The geotechnical test sample cutting device according to claim 1, characterized in that: The bracket (3) includes an upper bracket, a lower bracket, an upper beam plate (102) and a telescopic pull rod (200). The upper end of the base (2) is connected to the annular lower bracket, and the front end of the lower bracket is provided with an opening. A vertical sliding cavity is provided in the side wall of the lower bracket, and the upper end of the sliding cavity is an opening. The upper bracket can be inserted from top to bottom and slidably arranged in the sliding cavity. The front end of the upper bracket is also provided with an opening. The top of the upper bracket is provided with an upper beam plate (102); the telescopic pull rod (200) includes a slide bar (18) and A slide rail is provided in the sliding cavity of the lower bracket. A first positioning hole (20) communicating with the outer side of the lower bracket is provided at the upper end of the slide rail. A second positioning hole (21) communicating with the outer side of the lower bracket is provided at the lower end of the slide rail. A vertically arranged slide rod (18) is provided on the side wall of the upper bracket. A plurality of spring clips (19) are provided at the lower end of the slide rod (18). The spring clips (19) can be snapped into the first positioning hole (20) or the second positioning hole (21). The slide rod (18) is slidably connected to the slide rail.

10. The geotechnical test sample cutting device according to claim 9, characterized in that: The invention also includes an opening and closing door (301), wherein the left and right side walls at the front end opening of the upper bracket and the left and right side walls at the front end opening of the lower bracket are both provided with sliding grooves that pass through the upper and lower sides, and the opening and closing door (301) adopts a corrugated structure. The upper end of the opening and closing door (301) is installed at the lower end of the upper beam plate (102) and is located at the front end opening of the upper bracket, and the two sides of the opening and closing door (301) are respectively slidably arranged in the sliding grooves on both sides.

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