Portable vane shear apparatus for geological survey

Abstract

The utility model relates to the technical field of shear apparatuses, and discloses a portable vane shear apparatus for geological survey, which comprises a reaction frame, a vane shear apparatus and a vane shear apparatus, the measuring rod selectively penetrates through the lower end of the reaction frame, and the lower end of the measuring rod is connected with a cross plate head; the sleeve is fixedly connected to the upper end of the interior of the reaction frame, a threaded pipe and a threaded rod are rotationally connected into the sleeve, the threaded pipe is located above the threaded rod and is in threaded connection with the threaded rod, a first sliding groove and a second sliding groove which are communicated are formed in the side wall of the sleeve, and the threaded rod is perpendicularly and fixedly connected with a first sliding rod; the first sliding rod is slidably connected between the first sliding groove and the second sliding groove, in the first sliding groove, the screw rod can drive the measuring rod to move axially, and in the second sliding groove, the screw rod can drive the measuring rod to rotate circumferentially; the driving mechanism is used for driving the threaded pipe to rotate; and the detection mechanism is used for detecting and collecting axial force and torque generated when the screw rod drives the measuring rod to act. According to the utility model, a set of power source can drive the measuring rod to move axially and rotate circumferentially, and the structure is simplified.

Description

Technical Field

[0001] This utility model relates to the field of shearing instruments, and in particular to a portable vane shearing instrument for geological exploration. Background Technology

[0002] In the field of geological exploration, the vane shear tester is a crucial in-situ testing device with irreplaceable application value. It can quickly and accurately determine the shear strength of soil directly in the field, providing important basic data for site stability assessment, foundation bearing capacity determination, and slope reinforcement design in the early stages of engineering construction.

[0003] While existing vane shearing technology has seen some development, it still suffers from numerous drawbacks. For example, patent document CN222232236U discloses a miniature vane shearing device, including a reaction frame, a drive unit, a torsion switching device, and a detection device. It uses a jack and a worm gear reducer to drive the measuring rod for torsion shearing operations, and collects data using axial force and torque sensors. Although it boasts advantages such as a large measuring range and high accuracy, its structure is complex. In this patent, inserting it into the measuring hole and rotating the vane head requires two power sources: a jack and a worm gear reducer. This not only increases production costs but also reduces the device's integration, making it difficult to effectively control its size and weight, contradicting the portable design concept.

[0004] Given the aforementioned problems in existing technologies, it is particularly urgent to develop a simple, low-cost, and portable vane shearing instrument for geological exploration. Utility Model Content

[0005] The present invention aims to provide a portable vane shearing instrument for geological exploration to overcome the shortcomings mentioned above.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A portable vane shearing instrument for geological exploration, comprising:

[0008] reaction frame;

[0009] A measuring rod selectively penetrates the lower end of the reaction frame, and the lower end of the measuring rod is connected to a crosshead.

[0010] A sleeve is fixedly connected to the upper end of the inside of the reaction frame. A threaded tube and a screw are rotatably connected inside the sleeve. The threaded tube is located above the screw and the two are threaded together. The side wall of the sleeve is provided with a first sliding groove and a second sliding groove that are connected. A first sliding rod is vertically fixedly connected to the screw. The first sliding rod is slidably connected between the first sliding groove and the second sliding groove. In the first sliding groove, the screw can drive the measuring rod to move axially. In the second sliding groove, the screw can drive the measuring rod to rotate circumferentially.

[0011] A drive mechanism for rotating the threaded tube; and

[0012] A detection mechanism for detecting and collecting the axial force and torque generated when the screw drives the probe to move.

[0013] Furthermore, the first groove is parallel to the axial direction of the sleeve, and the second groove is arc-shaped and communicates with the lower end of the first groove.

[0014] Furthermore, it also includes a first connecting sleeve with its opening facing upward, the first connecting sleeve being located below the screw and slidably connected to the lower end of the screw in the vertical direction;

[0015] The detection mechanism includes an axial force sensor and a data acquisition device. The axial force sensor is connected to the data acquisition device and is installed in the first connecting sleeve, abutting against the lower end of the screw. The axial force sensor is used to detect and acquire the axial force generated at the lower end of the screw. The first connecting sleeve can drive the measuring rod to rotate synchronously.

[0016] Furthermore, the screw is vertically fixedly connected to a second slide rod, the second slide rod is located below the first slide rod, and a third slide groove is provided on the side wall of the first connecting sleeve. The third slide groove is parallel to the axial direction of the first connecting sleeve, and the second slide rod is slidably connected to the third slide groove.

[0017] Furthermore, the lower end of the base plate of the first connecting sleeve is integrally formed with a first connecting shaft;

[0018] The detection mechanism also includes a torque sensor, which is electrically connected to the data acquisition instrument. The input shaft of the torque sensor is coaxially connected to the first coupling, and the output end of the torque sensor is coaxially connected to the second coupling. The second coupling is coaxially connected to the upper end of the measuring rod through a torque switching device.

[0019] Furthermore, the torsion switching device includes a second connecting sleeve and a bolt. The second connecting sleeve is vertically threaded with the bolt. A first blind hole is provided at the lower end of the side wall of the second coupling shaft. The lower end of the second coupling shaft passes through the upper end of the second connecting sleeve, and the two are fixedly connected by the bolt embedded in the first blind hole. A second blind hole is provided at the upper end of the side wall of the measuring rod. The upper end of the measuring rod passes through the lower end of the second connecting sleeve, and the two are fixedly connected by the bolt embedded in the second blind hole.

[0020] Furthermore, the driving mechanism is a geared motor fixedly connected to the upper end of the reaction frame, and the output shaft of the geared motor passes through the upper end of the reaction frame and is connected to the threaded pipe via a coupling.

[0021] Furthermore, the reaction frame includes a top plate, a bottom plate, and a plurality of support rods fixedly connected between the top plate and the bottom plate. The reduction motor and the sleeve are fixedly connected to the top plate, and the bottom plate is provided with through holes. The lower end of the measuring rod selectively penetrates the through holes.

[0022] Compared with the prior art, this utility model has at least the following advantages:

[0023] This utility model vane shearing device achieves a single power source through the ingenious design of sleeves, threaded tubes, screws, and various sliding grooves. It can drive the measuring rod to move axially to complete the insertion and extraction of the vane head, and also drive the measuring rod to rotate circumferentially to perform torsional shearing operations. This eliminates the need for the traditional design of two power sources, greatly simplifies the overall structure, reduces production costs, and improves the reliability and stability of the equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the portable vane shearing device for geological exploration according to this utility model;

[0026] Figure 2 This utility model Figure 1 A magnified view of a portion of region A in the middle;

[0027] Figure 3 This is a cross-sectional view of the portable vane shearing instrument for geological exploration according to this utility model.

[0028] Reference numerals in the attached drawings: 1. Reaction frame; 2. Measuring rod; 3. Crosshead; 4. Sleeve; 5. Threaded pipe; 6. Screw; 7. First slide groove; 8. Second slide groove; 9. First slide rod; 10. Drive mechanism; 11. Detection mechanism; 12. First connecting sleeve; 13. Second slide rod; 14. Third slide groove; 15. First coupling; 16. Second coupling; 17. Second connecting sleeve; 18. Bolt; 19. Coupling; 101. Top plate; 102. Support rod; 103. Base plate; 1101. Axial force sensor; 1102. Torque sensor. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1-3 This utility model provides a portable vane shearing instrument for geological exploration, including a reaction frame 1, a measuring rod 2, a sleeve 4, a threaded tube 5, a screw 6, a drive mechanism 10, and a detection mechanism 11.

[0032] The reaction frame 1 includes a top plate 101, a bottom plate 103, and multiple support rods 102 fixedly connected between the top plate 101 and the bottom plate 103. The bottom plate 103 has through holes, and the lower end of the measuring rod 2 is connected to a cross-shaped plate head 3. The measuring rod 2 can selectively pass through the through holes in the bottom plate 103 of the reaction frame 1, enabling the measuring rod 2 to move up and down and rotate. A sleeve 4 is fixedly connected to the upper end of the inside of the reaction frame 1. Specifically, the sleeve 4 is fixedly connected to the lower surface of the top plate 101. A threaded tube 5 and a screw 6 are rotatably connected inside the sleeve 4, with the threaded tube 5 located above the screw 6, and the two are connected to each other by threads. The side wall of the sleeve 4 has a first sliding groove 7 and a second sliding groove 8 that are connected and communicate with each other. The first sliding groove 7 is parallel to the axial direction of the sleeve 4, and the second sliding groove 8 is arc-shaped and communicates with the lower end of the first sliding groove 7. A first sliding rod 9 is vertically fixedly connected to the screw 6, and the first sliding rod 9 is slidably connected between the first sliding groove 7 and the second sliding groove 8. When the first sliding rod 9 is in the first sliding groove 7, the screw 6 can drive the measuring rod 2 to move axially; and when the first sliding rod 9 enters the second sliding groove 8, the screw 6 can drive the measuring rod 2 to rotate circumferentially. The driving structure is used to drive the threaded tube 5 to rotate, including rotation along a first direction and rotation along a first direction. In this invention, the first direction is clockwise or counterclockwise rotation. The detection mechanism 11 is used to detect and collect the axial force and torque generated when the screw 6 drives the measuring rod 2 to move.

[0033] In a specific embodiment of this utility model, the first slide groove 7 and the second slide groove 8 are L-shaped. The length of the first slide groove 7 should be sufficient for the cross head 3 to pass through the measuring hole, and the length of the second slide groove 8 should be sufficient for the rotation angle of the screw 6 when measuring the torque.

[0034] Preferably, the present invention further includes a first connecting sleeve 12 with its opening facing upward. The first connecting sleeve 12 is located below the screw 6 and is slidably connected to the lower end of the screw 6 in the vertical direction. The detection mechanism 11 includes an axial force sensor 1101 and a data acquisition device (not shown in the drawings). The axial force sensor 1101 is electrically connected to the data acquisition device. The axial force sensor 1101 is installed inside the first connecting sleeve 12 and abuts against the lower end of the screw 6. It is used to detect and acquire the axial force generated at the lower end of the screw 6. The axial force sensor 1101 is preferably a pressure sensor. The axial force sensor 1101 is drive-connected to the data acquisition device, which can record axial force data in real time.

[0035] Specifically, the screw 6 is vertically fixedly connected to the second slide rod 13, which is located below the first slide rod 9. A third slide groove 14, parallel to the axial direction of the first connecting sleeve 12, is provided on the side wall of the first connecting sleeve 12. The second slide rod 13 is slidably connected to the third slide groove 14, ensuring that the screw 6 can slide relative to the first connecting sleeve 12 in the vertical direction, thus guaranteeing the measurement process of the axial force sensor 1101.

[0036] The lower end of the base plate 103 of the first connecting sleeve 12 is integrally formed with a first coupling 15. The detection mechanism 11 also includes a torque sensor 1102, which is electrically connected to the data acquisition instrument. The input shaft of the torque sensor 1102 is coaxially connected to the first coupling 15, and the output end is coaxially connected to the second coupling 16. The second coupling 16 is coaxially connected to the upper end of the measuring rod 2 through a torque switching device.

[0037] The torsion switching device mainly consists of a second connecting sleeve 17 and bolts 18. A first blind hole is provided at the lower end of the side wall of the second coupling 16. The lower end of the second coupling 16 passes through the upper end of the second connecting sleeve 17, and the two are fixedly connected by bolts 18 embedded in the first blind hole. A second blind hole is provided at the upper end of the side wall of the measuring rod 2. The upper end of the measuring rod 2 passes through the lower end of the second connecting sleeve 17, and the two are fixedly connected by another bolt 18 embedded in the second blind hole. The connection and separation between the measuring rod 2 and the second coupling 16 can be achieved by loosening or tightening the bolts 18.

[0038] The drive mechanism 10 is a geared motor fixedly connected to the top plate 101 of the reaction frame 1. Its output shaft passes through the upper end of the reaction frame 1 and is connected to the threaded tube 5 via a coupling 19. When the geared motor is running, it can drive the threaded tube 5 to rotate, which in turn drives the screw 6 to move up and down through the threaded transmission, thereby realizing the axial movement or circumferential rotation of the measuring rod 2.

[0039] The method of use and operation steps of this utility model are as follows:

[0040] Place the reaction frame 1 in a stable survey position to ensure its stability. Assemble the components according to the above connection relationship, ensuring that the threaded pipe 5, screw 6, measuring rod 2, crosshead 3, axial force sensor 1101, torque sensor 1102, and other components are tightly connected and rotate freely.

[0041] Initially, the first sliding rod 9 is located at the upper end of the first sliding groove 7. The reduction motor is started, driving the threaded tube 5 to rotate. Since the threaded tube 5 is threadedly connected to the screw 6, the screw 6 begins to move downwards within the sleeve 4. Simultaneously, the screw 6 slides within the first sliding groove 7 via the first sliding rod 9, causing the measuring rod 2 to move axially downwards, gradually penetrating the crosshead 3 into the soil. During penetration, the axial force sensor 1101 detects the axial force generated at the lower end of the screw 6 in real time and transmits the data to the data acquisition instrument for recording.

[0042] Once the crosshead 3 reaches the predetermined depth, the first sliding rod 9 is located at the bottom of the first sliding groove 7. The reduction motor is then started, and the threaded tube 5 continues to rotate. At this time, the screw 6, under the action of threaded transmission, slides in the second sliding groove 8 through the first sliding rod 9, and drives the measuring rod 2 to rotate circumferentially through the first connecting sleeve 12, the second connecting shaft 16, and other components. The crosshead 3 then performs torsional shearing on the soil. During this process, the torque sensor 1102 detects the torque generated by the torsional shearing in real time and transmits it to the data acquisition instrument for recording.

[0043] After the torsion shear operation is completed, the axial force and torque data recorded in the data acquisition instrument are sorted and analyzed, and parameters such as the shear strength of the soil are calculated according to relevant formulas to provide accurate basis for geological exploration.

[0044] The drive motor is controlled to rotate in the opposite direction, and the first slide rod 9 slides in the second slide groove 8 and the first slide groove 7 in sequence, so that the measuring rod 2 is retracted into the reaction frame 1.

[0045] The beneficial effects of this utility model are:

[0046] This utility model vane shearing device, through the ingenious design of the sleeve 4, threaded tube 5, screw 6, and various sliding grooves, realizes a single power source, namely a geared motor. It can both drive the measuring rod 2 to move axially to complete the insertion and extraction operation of the vane head 3, and drive the measuring rod 2 to rotate circumferentially to perform torsion shearing operations. It abandons the traditional design of two power sources, greatly simplifies the overall structure, reduces production costs, and also improves the reliability and stability of the equipment.

[0047] During operation, different actions of the measuring rod 2 can be easily switched by controlling the operation of the geared motor. There is no need to disassemble and reassemble the equipment in a complicated manner. The operation is simple and quick, which can effectively improve the efficiency of on-site geological exploration.

[0048] The axial force sensor 1101 and torque sensor 1102 monitor the axial force and torque in real time, respectively, and collect data accurately through the data acquisition instrument. This provides reliable data support for the accurate calculation of soil shear strength, ensures the accuracy of geological survey results, and helps to provide a scientific and reasonable basis for engineering construction decisions.

[0049] The simplified and integrated design of the structure allows for effective control of the size and weight of the entire device, making it easy to carry and transport.

[0050] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A portable vane shear apparatus for geotechnical investigation, characterized by, include: Reaction frame (1); A measuring rod (2) selectively penetrates the lower end of the reaction frame (1), and the lower end of the measuring rod (2) is connected to a cross plate head (3); A sleeve (4) is fixedly connected to the upper end of the inside of the reaction frame (1). A threaded tube (5) and a screw (6) are rotatably connected inside the sleeve (4). The threaded tube (5) is located above the screw (6) and the two are threaded together. The side wall of the sleeve (4) is provided with a first sliding groove (7) and a second sliding groove (8) that are connected. The screw (6) is vertically fixedly connected to a first sliding rod (9). The first sliding rod (9) is slidably connected between the first sliding groove (7) and the second sliding groove (8). In the first sliding groove (7), the screw (6) can drive the measuring rod (2) to move axially. In the second sliding groove (8), the screw (6) can drive the measuring rod (2) to rotate circumferentially. A drive mechanism (10) for rotating the threaded tube (5); and A detection mechanism (11) for detecting and collecting the axial force and torque generated when the screw (6) drives the probe (2) to move.

2. The portable vane shear apparatus for geological exploration according to claim 1, wherein The first groove (7) is parallel to the axial direction of the sleeve (4), and the second groove (8) is arc-shaped and connected to the lower end of the first groove (7).

3. The portable vane shear apparatus for geological exploration according to claim 1, wherein It also includes a first connecting sleeve (12) with its opening facing upward. The first connecting sleeve (12) is located below the screw (6) and is slidably connected to the lower end of the screw (6) in the vertical direction. The detection mechanism (11) includes an axial force sensor (1101) and a data acquisition instrument. The axial force sensor (1101) is connected to the data acquisition instrument and is installed in the first connecting sleeve (12) and abuts against the lower end of the screw (6). The axial force sensor (1101) is used to detect and acquire the axial force generated at the lower end of the screw (6). The first connecting sleeve (12) can drive the measuring rod (2) to rotate synchronously.

4. The portable vane shear apparatus for geological exploration according to claim 3, wherein The screw (6) is vertically fixedly connected to a second slide rod (13), the second slide rod (13) is located below the first slide rod (9), a third slide groove (14) is provided on the side wall of the first connecting sleeve (12), the third slide groove (14) is parallel to the axial direction of the first connecting sleeve (12), and the second slide rod (13) is slidably connected to the third slide groove (14).

5. The portable vane shear apparatus for geological exploration according to claim 3, wherein The bottom plate (103) of the first connecting sleeve (12) is integrally formed with a first connecting shaft (15); The detection mechanism (11) further includes a torque sensor (1102), which is electrically connected to the data acquisition instrument. The input shaft of the torque sensor (1102) is coaxially connected to the first connecting shaft (15), and the output end of the torque sensor (1102) is coaxially connected to the second connecting shaft (16). The second connecting shaft (16) is coaxially connected to the upper end of the measuring rod (2) through a torque switching device.

6. The portable vane shear apparatus for geological exploration according to claim 5, wherein The torsion switching device includes a second connecting sleeve (17) and a bolt (18). The second connecting sleeve (17) is vertically threaded with the bolt (18). The lower end of the side wall of the second connecting shaft (16) is provided with a first blind hole. The lower end of the second connecting shaft (16) passes through the upper end of the second connecting sleeve (17) and is fixedly connected to the second connecting sleeve (17) by the bolt (18) embedded in the first blind hole. The upper end of the side wall of the measuring rod (2) is provided with a second blind hole. The upper end of the measuring rod (2) passes through the lower end of the second connecting sleeve (17) and is fixedly connected to the second connecting sleeve (18) by the bolt (18) embedded in the second blind hole.

7. The portable vane shear apparatus for geological exploration according to claim 6, wherein The drive mechanism (10) is a geared motor fixedly connected to the upper end of the reaction frame (1). The output shaft of the geared motor passes through the upper end of the reaction frame (1) and is connected to the threaded pipe (5) via a coupling (19).

8. The portable vane shear apparatus for geological exploration according to claim 7, wherein The reaction frame (1) includes a top plate (101), a bottom plate (103), and a plurality of support rods (102) fixedly connected between the top plate (101) and the bottom plate (103). The reduction motor and the sleeve (4) are fixedly connected to the top plate (101) respectively. The bottom plate (103) is provided with through holes, and the lower end of the measuring rod (2) selectively penetrates the through holes.

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