Soil digging device for soil test

Abstract

The utility model discloses a soil opening device for geotechnical test, which comprises a device base, a soil sample protection cylinder, a moving plate, a mounting plate, a fixing plate and a steel wire mounting rod, a fixing block is mounted on the device base, the soil sample protection cylinder and a soil sample protection ring are mounted on the fixing block, a push plate is mounted in the soil sample protection cylinder in a sliding manner, a push rod is mounted on the push plate, and the steel wire mounting rod is mounted on the mounting plate. A graduated scale is arranged on the outer wall of the push rod, a motor is installed in the device base, a lead screw is installed at the power shaft end of the motor, a ball nut is installed on the lead screw in a threaded mode and connected with a movable plate, and the movable plate is fixedly connected with one end of the push rod through a flange. Soil samples with different thicknesses can be manufactured according to different heights of the cutting rings for the soil test, the problem that only the soil samples can be cut in a fixed thickness size is solved, the use of most of the cutting rings with different specifications and heights for the soil test can be met, and the adaptability and practicability of the soil opening device for the soil test are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related field of earth opening device, concretely is earth opening device for geotechnical test. BACKGROUND

[0002] With the high -speed development of national economy, various major engineering construction are more and more, and this involves a large number of complex geotechnical engineering problems, due to the limitation of site condition, at this time, it needs to carry out on -site sampling, carries back laboratory test various demand parameters, sometimes brings the larger soil sample, needs to carry out artificial block, sample preparation in indoor geotechnical test is the first step of test process, and it is a crucial step, and sample preparation includes the preparation of undisturbed soil and disturbed soil.The tool for cutting soil sample in the preparation process of undisturbed soil is essential tool, and the current soil cutting tool widely used in geotechnical laboratory includes soil cutting knife and steel wire saw.

[0003] Through the search, the utility model discloses a kind of earth opening device for geotechnical test, and it relates to geotechnical test equipment field.It includes soil sample protection cylinder, soil sample protection cylinder includes first soil sample shell and second soil sample shell, first soil sample shell and second soil sample shell are enclosed to form soil sample protection cylinder, first soil sample shell and second soil sample shell are uniformly spaced with earth opening groove outside, and the earth opening groove position of first soil sample shell and second soil sample shell is corresponding;Bottom fixing mechanism, bottom fixing mechanism is connected to soil sample protection cylinder bottom end;Upper fixing mechanism, upper fixing mechanism is connected to one side of soil sample protection cylinder.The earth opening device for geotechnical test disclosed in the utility model can uniformly cut soil sample and not cause soil sample disturbance, is convenient to use, and has very strong practicality.

[0004] The technical scheme in the application file still has the following deficiencies: the ring cutter height of geotechnical test is different, and the required soil sample thickness is also different, so that only the soil sample can be cut to a fixed thickness size, and the use of most specifications of different heights of ring cutter cannot be met, so that the adaptability of the earth opening device for geotechnical test is not high. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an earth opening device for geotechnical test to solve the problems in the above background technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a soil-opening device for geotechnical testing, comprising a device base, a soil sample casing, a movable plate, an installation plate, a fixed plate, and a steel wire mounting rod. A fixed block is installed on the device base, and a soil sample casing and a soil sample retaining ring are installed on the fixed block. A push plate is slidably installed in the soil sample casing, and a push rod is installed on the push plate. A scale is provided on the outer wall of the push rod. A motor is installed in the device base, and a lead screw is installed at the end of the motor's power shaft. A ball nut is threaded onto the lead screw, and the ball nut is connected to the movable plate. The movable plate is fixedly connected to one end of the push rod through a flange.

[0007] Using the above technical solution, the soil sample casing and soil sample retaining ring installed on the fixed block on the device base are first coated with Vaseline. Then, the soil sample to be cut is slid through the soil sample retaining ring and placed into the soil sample casing. The soil sample abuts against the push plate slidably installed in the soil sample casing, so that the push plate is located at the very end of the soil sample casing. One end of the push rod installed on the push plate is fixedly connected to the moving plate through a flange. The operator starts the motor installed in the device base, causing the screw installed on the motor drive shaft to rotate, thereby moving the ball nut threaded on the screw. The movement of the ball nut drives the moving plate to move, which, in conjunction with the push rod, moves the push plate in the soil sample casing, pushing the soil sample out of the casing. A cutting wire is passed through the gap between the soil sample casing and the soil sample retaining ring to cut the soil sample into a cake. The cut soil cake is pushed out of one end of the soil sample retaining ring by the soil sample to be cut next. The operator uses a scale on the outer wall of the push rod to calculate the cutting thickness of the soil cake by subtracting the number of marks after the previous cut from the number of marks after the move. By controlling the motor switch, soil samples of different thicknesses can be obtained. It can produce soil samples of different thicknesses according to the different ring cutter heights of the geotechnical test, avoiding the problem of being able to cut soil samples of fixed thickness. It can meet the needs of most different height ring cutters in geotechnical tests, improving the adaptability and practicality of the soil cutting device for geotechnical tests.

[0008] Preferably, a bracket is mounted on the mounting plate, a fixing plate is mounted on the top of the bracket, a sliding groove is provided on the fixing plate, a steel wire mounting rod is slidably mounted in the sliding groove, and a cutting steel wire is installed between the steel wire mounting rods.

[0009] Using the above technical solution, the steel wire mounting rod, which is slidably installed in the groove opened on the fixed plate and mounted on the mounting plate, moves downward through the bracket on the mounting plate and the fixed plate at the top of the bracket. This causes the cutting steel wire installed between the steel wire mounting rods to move downward, so that the cutting steel wire passes through the gap set between the soil sample casing and the soil sample protective ring, and cuts the soil sample into cakes.

[0010] Preferably, the top end of the steel wire mounting rod is provided with a top plate, a spring is arranged between the top plate and the fixing plate, and a handle is arranged on the top plate.

[0011] According to the above technical scheme, when the soil sample is loaded into the soil sample casing and needs to be cut, the sliding block on the bottom of the mounting plate is slid in the track on the device base, the cutting steel wire is moved to the interval between the soil sample casing and the soil sample ring, and then the plug rod on the mounting plate is inserted into the plug hole on the device base to fix the cutting structure.

[0012] Preferably, the device base is provided with a track, the bottom of the mounting plate is provided with a sliding block, the sliding block is slidably connected with the track, a plug rod is slidably arranged on the mounting plate, and plug holes are arranged on both sides of the track on the device base.

[0013] According to the above technical scheme, when the soil sample is loaded into the soil sample casing and needs to be cut, the sliding block on the bottom of the mounting plate is slid in the track on the device base, the cutting steel wire is moved to the interval between the soil sample casing and the soil sample ring, and then the plug rod on the mounting plate is inserted into the plug hole on the device base to fix the cutting structure.

[0014] Preferably, the channel diameters of the soil sample casing and the soil sample ring are the same, and an interval is arranged between the soil sample casing and the soil sample ring.

[0015] According to the above technical scheme, the channel diameters of the soil sample casing and the soil sample ring are the same, the soil sample to be cut is slid through the soil sample ring and loaded into the soil sample casing, and the interval arranged between the soil sample casing and the soil sample ring allows the cutting steel wire to cut the soil sample.

[0016] Preferably, the motor is provided with a circuit controller and a brake structure.

[0017] According to the above technical scheme, the circuit controller arranged on the motor changes the positive and negative poles of the direct current motor power supply to change the rotation direction of the motor shaft, thereby achieving the purpose of bidirectional and alternating rotation of the motor shaft, and the brake structure arranged on the motor can brake and stop the motor after power failure.

[0018] Compared with the prior art, the beneficial effects of the utility model are: through the control switch of motor, the ball nut of screw rod is moved, the ball nut moves and drives the moving plate to move, and the moving plate is moved in the soil sample casing through the cooperation of push rod, the soil sample in the soil sample casing is pushed to the soil sample ring, the cutting steel wire is arranged between the soil sample casing and the soil sample ring, and the soil sample is cut, the staff takes the last cutting number and subtracts the number after moving through the scale arranged on the outer wall of push rod, and the cutting thickness of soil sample cake is obtained, the soil sample of different thickness size is obtained through the control switch of motor, the soil sample of different thickness can be made according to the different height of ring cutter of soil test, the problem that the soil sample can only be cut in fixed thickness size is avoided, most of the ring cutters of different height of different specifications of soil test can be used, and the adaptability of the soil opening device for soil test is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective structural schematic view of the utility model;

[0020] Figure 2 It is a sectional structure schematic view of the utility model;

[0021] Figure 3 It is a one end surface structure schematic view of the utility model;

[0022] Figure 4 It is a top view structure schematic view of the utility model.

[0023] In the drawing: 1, device base; 2, fixed block; 3, soil sample casing; 4, soil sample ring; 5, push plate; 6, push rod; 7, scale; 8, flange; 9, moving plate; 10, motor; 11, screw rod; 12, ball nut; 13, track; 14, sliding block; 15, mounting plate; 16, insertion rod; 17, support; 18, fixed plate; 19, sliding groove; 20, steel wire mounting rod; 21, cutting steel wire; 22, top plate; 23, handle; 24, spring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0025] Please refer to Figures 1-4The utility model provides a kind of embodiment of the utility model discloses a soil test is used to open soil device, including device base 1, soil sample casing 3, moving plate 9, mounting plate 15, fixed plate 18 and steel wire mounting rod 20, the fixed block 2 is installed on device base 1, the fixed block 2 is installed with soil sample casing 3 and soil sample ring 4, the push plate 5 is slidably installed in soil sample casing 3, the push rod 6 is installed on the push plate 5, the outer wall of the push rod 6 is provided with scale 7, the motor 10 is installed in device base 1, the power axle end of motor 10 is installed with lead screw 11, the ball nut 12 is threadedly installed on lead screw 11, the ball nut 12 is connected with moving plate 9, and the one end of moving plate 9 is fixedly connected with push rod 6 by flange 8.The fixed block 2 is installed on device base 1, vaseline is first applied on the inner wall of soil sample casing 3 and soil sample ring 4 installed on fixed block 2, then the soil sample needing cutting is slid through soil sample ring 4 and is placed in soil sample casing 3, the soil sample is abutted with the push plate 5 slidably installed in soil sample casing 3, so that the push plate 5 is located the most tail end of soil sample casing 3, one end of the push rod 6 installed on the push plate 5 is fixedly connected with moving plate 9 by flange 8, and staff member makes the motor 10 installed in device base 1 start, so that the lead screw 11 installed on the power axle end of motor 10 rotates, so that the ball nut 12 threadedly installed on lead screw 11 moves, the ball nut 12 moves and drives moving plate 9 to move, cooperates push rod 6 to make the push plate 5 move in soil sample casing 3, and the soil sample in soil sample casing 3 is pushed to soil sample ring 4, and cutting steel wire 21 is arranged between soil sample casing 3 and soil sample ring 4, and the interval is passed, and the soil sample is cut pie, and the soil sample pie cut is pushed out from the one end of soil sample ring 4 by the soil sample behind needing cutting, and staff member takes the cutting number of last time by the scale 7 set on the outer wall of push rod 6, and the cutting thickness of soil sample pie is equal to the cutting number after moving, and the soil sample of different thickness size is obtained by controlling the switch of motor 10, can be made the soil sample of different thickness according to the different height of soil test ring cutter, avoids only the cutting problem of soil sample of fixed thickness size, can satisfy the most specifications different height ring cutter of soil test, improve the adaptive practicality of soil test opening soil device.

[0026] The mounting plate 15 is installed with support 17, the top end of support 17 is installed with fixed plate 18, the fixed plate 18 is opened with sliding groove 19, the steel wire mounting rod 20 is slidably installed in sliding groove 19, and the cutting steel wire 21 is installed between steel wire mounting rod 20. The mounting plate 15 is installed with support 17, the top end of support 17 is installed with fixed plate 18, the fixed plate 18 is opened with sliding groove 19, the steel wire mounting rod 20 is slidably installed in sliding groove 19, and the cutting steel wire 21 is installed between steel wire mounting rod 20.

[0027] The top end of the steel wire mounting rod 20 is provided with a top plate 22, a spring 24 is mounted between the top plate 22 and the fixed plate 18, and a handle 23 is mounted on the top plate 22. By mounting the top plate 22 at the top end of the steel wire mounting rod 20, cooperating with the spring 24 mounted between the top plate 22 and the fixed plate 18, the worker holds the handle 23 mounted on the top plate 22 and presses downward, the spring 24 mounted between the top plate 22 and the fixed plate 18 is compressed, the top plate 22 moves downward to drive the steel wire mounting rod 20 to move downward for cutting, after cutting, the worker does not implement the downward pressure, the spring 24 restores the elastic force, the top plate 22 moves upward to drive the steel wire mounting rod 20 to move upward to reset.

[0028] The device base 1 is provided with a track 13, the bottom of the mounting plate 15 is provided with a sliding block 14, the sliding block 14 is in sliding connection with the track 13, the mounting plate 15 is provided with a plug rod 16 in sliding connection, and the device base 1 is provided with plug holes on both sides of the track 13. When the soil sample needs to be cut after being loaded into the soil sample casing 3, the sliding block 14 mounted at the bottom of the mounting plate 15 is slid in the track 13 of the device base 1, the cutting steel wire 21 is moved to the interval between the soil sample casing 3 and the soil sample ring 4 by moving the mounting plate 15, and then the plug rod 16 in sliding connection with the mounting plate 15 is inserted into the plug holes provided on both sides of the track 13 of the device base 1 to fix the cutting structure.

[0029] The channel diameters of the soil sample casing 3 and the soil sample ring 4 are the same, and an interval is arranged between the soil sample casing 3 and the soil sample ring 4. The channel diameters of the soil sample casing 3 and the soil sample ring 4 are the same, the soil sample to be cut is slid through the soil sample ring 4 and is loaded into the soil sample casing 3, and the interval arranged between the soil sample casing 3 and the soil sample ring 4 enables the cutting steel wire 21 to cut the soil sample through the interval.

[0030] The motor 10 is provided with a circuit controller and a brake structure. The circuit controller mounted on the motor changes the positive and negative poles of the direct current motor power supply to change the rotation direction of the motor shaft, so as to achieve the purpose of bidirectional and alternating rotation of the motor shaft, and the brake structure mounted on the motor can brake and stop the motor after power off.

[0031] Working principle: through the fixed block 2 installed on the base 1 of the device, first smear vaseline on the inner wall of the soil sample protection ring 4 and the soil sample protection cylinder 3 installed on the fixed block 2, then slide the soil sample to be cut through the soil sample protection ring 4 and put it into the soil sample protection cylinder 3, make the push plate 5 in the soil sample protection cylinder 3 slide, make the push plate 5 at the tail end of the soil sample protection cylinder 3, fix the one end of the push rod 6 installed on the push plate 5 and the moving plate 9 through the flange 8, make the ball nut 12 on the screw rod 11 move through the rotation of the screw rod 11 driven by the motor 10 installed on the power shaft end of the motor 10 in the base 1 of the device, drive the moving plate 9 to move through the ball nut 12, drive the push plate 5 to move in the soil sample protection cylinder 3 through the push rod 6, push the soil sample in the soil sample protection cylinder 3 to the soil sample protection ring 4, take the cutting number of the last cutting and subtract the cutting number after moving through the scale 7 on the outer wall of the push rod 6, then the cutting thickness of the soil sample cake is obtained, then make the sliding block 14 installed on the bottom of the mounting plate 15 slide in the track 13 opened in the base 1 of the device, move the mounting plate 15 to make the cutting steel wire 21 move to the interval between the soil sample protection cylinder 3 and the soil sample protection ring 4, make the insertion rod 16 installed on the mounting plate 15 inserted into the insertion hole opened on both sides of the track 13 in the base 1 of the device, fix the cutting structure, hold the handle 23 installed on the top plate 22 and press down, make the spring 24 installed between the top plate 22 and the fixed plate 18 compressed, make the top plate 22 move down, drive the steel wire installation rod 20 installed in the sliding groove 19 to move down, make the cutting steel wire 21 on the steel wire installation rod 20 move down and pass through the interval between the soil sample protection cylinder 3 and the soil sample protection ring 4, cut the soil sample, after cutting, the worker does not implement the pressing force, the spring 24 restores the elastic force, makes the top plate 22 move up and drive the steel wire installation rod 20 to move up and reset, the cut soil sample cake is pushed out from one end of the soil sample protection ring 4 by the soil sample behind which needs to be cut, different thickness of the soil sample can be obtained by controlling the switch of the motor 10, different thickness of the soil sample can be made according to the different height of the cutting ring of the soil test, the problem that only the soil sample with fixed thickness can be cut is avoided, most of the cutting rings with different specifications and heights used in the soil test can be satisfied, and the adaptability and practicality of the soil opening device used in the soil test are improved.

[0032] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A soil-opening device for geotechnical testing, comprising a device base (1), a soil sample casing (3), a movable plate (9), a mounting plate (15), a fixing plate (18), and a steel wire mounting rod (20), characterized in that: A fixing block (2) is installed on the base (1) of the device. A soil sample casing (3) and a soil sample retaining ring (4) are installed on the fixing block (2). A push plate (5) is slidably installed in the soil sample casing (3). A push rod (6) is installed on the push plate (5). A scale (7) is provided on the outer wall of the push rod (6). A motor (10) is installed in the base (1) of the device. A lead screw (11) is installed at the power shaft end of the motor (10). A ball nut (12) is threaded on the lead screw (11). The ball nut (12) is connected to a moving plate (9). The moving plate (9) is fixedly connected to one end of the push rod (6) through a flange (8).

2. The soil-opening device for geotechnical testing according to claim 1, characterized in that: A bracket (17) is installed on the mounting plate (15), and a fixing plate (18) is installed at the top of the bracket (17). A sliding groove (19) is provided on the fixing plate (18), and a steel wire mounting rod (20) is slidably installed in the sliding groove (19). A cutting steel wire (21) is installed between the steel wire mounting rods (20).

3. The soil-opening device for geotechnical testing according to claim 1, characterized in that: A top plate (22) is installed at the top of the steel wire mounting rod (20), a spring (24) is installed between the top plate (22) and the fixing plate (18), and a handle (23) is installed on the top plate (22).

4. The soil-opening device for geotechnical testing according to claim 1, characterized in that: The device base (1) has a track (13) and a slider (14) is installed at the bottom of the mounting plate (15). The slider (14) is slidably connected to the track (13). A plug rod (16) is slidably installed on the mounting plate (15). Plug holes are provided on both sides of the track (13) on the device base (1).

5. The soil-opening device for geotechnical testing according to claim 1, characterized in that: The soil sample casing (3) and the soil sample ring (4) have the same number of channel diameters, and there is a gap between the soil sample casing (3) and the soil sample ring (4).

6. The soil-opening device for geotechnical testing according to claim 1, characterized in that: The motor (10) is equipped with a circuit controller and a brake structure.

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