Soil test sample preparation device

Abstract

The utility model relates to the technical field of sample preparation devices, and discloses a soil test sample preparation device which comprises a support and an installation plate fixedly installed on the support through bolts, and a compaction assembly is installed between the support and the installation plate. The compaction assembly comprises a compaction barrel arranged on the mounting plate, a pressing disc arranged in the compaction barrel and matched with the compaction barrel, and a U-shaped rod fixed to the upper surface of the pressing disc, a Z-shaped plate is fixedly mounted at the top of the support through a bolt, and the U-shaped rod can slide up and down in a through hole formed in the surface of the Z-shaped plate; according to the soil test sample preparation device, through the compaction assembly, soil can be compacted without frequent manual sliding of a striking disc, so that the labor intensity of workers is reduced, the falling height can be ensured to be fixed, and different heights can be adjusted to realize compaction of different soil bodies; therefore, the accuracy of test results is ensured and the use effect of the device is improved.

Description

Technical Field

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

[0002] Sample preparation is one of the important steps in geotechnical testing. Its purpose is to obtain representative soil samples for experimental testing. Therefore, a sample preparation device is needed for sample preparation. During sample preparation, the sample needs to be compacted to simulate different degrees of compaction, and the density of the soil is calculated based on the reaction force generated. Therefore, there is a compacting hammer in the sample preparation device.

[0003] At present, geotechnical test sample makers generally compact the soil by manually pushing the hammer. Frequent soil compaction undoubtedly increases the labor intensity of the staff, and the high accuracy of the hammer cannot be guaranteed, resulting in different impact forces, which will affect the test results and make it difficult to ensure the accuracy of the test results. Therefore, we proposed a geotechnical test sample maker to solve the above problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a geotechnical test sample maker, which solves the problem that the current geotechnical test sample maker generally compacts the soil by manually pushing the hammer. Frequent soil compaction undoubtedly increases the labor intensity of the staff, and the high accuracy of the falling hammer cannot be guaranteed, which will affect the test results and make it difficult to ensure the accuracy of the test results.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a geotechnical test sample preparation device comprises a bracket and a mounting plate fixedly mounted on the bracket by bolts, a compaction assembly is installed between the bracket and the mounting plate;

[0006] The compacting assembly includes a compacting cylinder arranged on the mounting plate, a pressing plate arranged inside the compacting cylinder and fixed to the upper surface of the pressing plate;

[0007] A Z-shaped plate is fixed on the top of the bracket by bolts, and the U-shaped rod can slide up and down in the through hole opened on the surface of the Z-shaped plate;

[0008] A fixed plate and a striking plate are slidably mounted on the U-shaped rod, and an electromagnet is fixed at the center of the lower surface of the fixed plate. The striking plate is made of a rigid material and can be magnetically attracted by the electromagnet when it is energized.

[0009] A laser rangefinder is installed inside the fixed disk for monitoring the distance between the fixed disk and the striking disk;

[0010] A stepper motor is mounted on one side of the surface of the Z-shaped plate by means of bolts, a rotating rod is fixed to the output end of the stepper motor by means of screws, and a winding roller is fixed to the other end of the rotating rod, a rope is wound around the surface of the winding roller, one end of the rope is fixedly connected to the winding roller, and the other end of the rope is fixed to the top of the fixed plate;

[0011] A strip plate is installed on the bracket, and a sliding sleeve is slidably connected to the surface of the strip plate. The sliding sleeve is made of iron material. A bar magnet for adsorbing and fixing the sliding sleeve is fixedly installed on the surface of the strip plate, and an inductive proximity switch is fixedly installed on the surface of the sliding sleeve.

[0012] Preferably, a sliding hole one adapted to the U-shaped rod is opened on the surface of the fixing plate, and the fixing plate and the U-shaped rod are slidably connected through the sliding hole one.

[0013] Preferably, a second sliding hole adapted to the U-shaped rod is provided on the surface of the striking plate, and the striking plate and the U-shaped rod are slidably connected through the second sliding hole.

[0014] Preferably, the inner side wall of the sliding sleeve is provided with a limiting groove adapted to the bar magnet, and the bar magnet is clamped in the limiting groove of the sliding sleeve.

[0015] Preferably, scale lines are provided on the surface of the strip plate.

[0016] Preferably, the upper surface of the mounting plate is provided with a placement groove adapted to the compacting cylinder, and the compacting cylinder is inserted into the placement groove provided on the mounting plate. The interior of the mounting plate is threadedly connected with a locking bolt through a threaded hole provided therein, and the compacting cylinder is squeezed and fixed by screwing the locking bolt.

[0017] Beneficial effects

[0018] The utility model provides a geotechnical test sample preparation device. Compared with the prior art, it has the following beneficial effects:

[0019] The geotechnical test sample maker, through the compaction component, does not need to manually slide the striking plate frequently to compact the soil, thereby reducing the labor intensity of the staff, and can ensure that the falling height is fixed, and can also be adjusted to different heights to achieve compaction of different soil bodies, thereby ensuring the accuracy of the test results and improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a partial diagram of the overall structure of the utility model;

[0022] Figure 3 This is a cross-sectional view of the compacting cylinder structure of the present utility model.

[0023] In the figure: 1. Bracket; 2. Mounting plate; 3. Compacting assembly; 301. Compacting cylinder; 302. Pressing plate; 303. U-shaped rod; 304. Beating plate; 305. Electromagnet; 306. Fixed plate; 307. Laser rangefinder; 308. Rope; 309. Locking bolt; 310. Z-shaped plate; 311. Stepping motor; 312. Winding rod; 313. Strip plate; 314. Sliding sleeve; 315. Bar magnet; 316. Scale line; 317. Inductive proximity switch. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1 As shown:

[0026] The geotechnical test sample preparation device comprises a bracket 1 and a mounting plate 2 fixed on the bracket 1 by bolts.

[0027] In this embodiment: In order to solve the technical problems existing in the prior art, as disclosed in the background technology above, "the current geotechnical test sample maker generally compacts the soil by manually pushing the hammer. Frequent soil compaction undoubtedly increases the labor intensity of the staff, and the high accuracy of the hammer cannot be guaranteed, resulting in different impact forces, which will affect the test results and make it difficult to ensure the accuracy of the test results." In terms of combined use, this problem is obviously a real problem that is difficult to solve. In view of this, in order to solve this technical problem, a compaction component 3 is added to this application document, and the electrical equipment involved in this product are all powered by an external power supply.

[0028] More specifically:

[0029] like Figure 1-Figure 3 As shown:

[0030] A compacting assembly 3 is installed between the bracket 1 and the mounting plate 2. The compacting assembly 3 includes a compacting cylinder 301 provided on the mounting plate 2, a pressing plate 302 provided inside the compacting cylinder 301 and a U-shaped rod 303 fixed to the upper surface of the pressing plate 302.

[0031] A Z-shaped plate 310 is fixed to the top of the bracket 1 by bolts, and the U-shaped rod 303 can slide up and down in the through hole opened on the surface of the Z-shaped plate 310;

[0032] A fixed plate 306 and a striking plate 304 are slidably mounted on the U-shaped rod 303. An electromagnet 305 is fixed to the center of the lower surface of the fixed plate 306. The striking plate 304 is made of a rigid material and can be magnetically attracted by the electromagnet 305 when it is energized.

[0033] A laser rangefinder 307 is installed inside the fixed disk 306 for monitoring the distance between the fixed disk 306 and the striking disk 304;

[0034] A stepper motor 311 is mounted on one side of the Z-shaped plate 310 via bolts. A rotating rod is fixed to the output end of the stepper motor 311 via screws. A winding roller 312 is fixed to the other end of the rotating rod. A rope 308 is wound around the surface of the winding roller 312. One end of the rope 308 is fixedly connected to the winding roller 312, and the other end of the rope 308 is fixed to the top of the fixed plate 306.

[0035] A strip plate 313 is mounted on the bracket 1. A sliding sleeve 314 is slidably connected to the surface of the strip plate 313. The sliding sleeve 314 is made of iron. A bar magnet 315 is fixedly mounted on the surface of the strip plate 313 for adsorbing and fixing the sliding sleeve 314. An inductive proximity switch 317 is fixedly mounted on the surface of the sliding sleeve 314.

[0036] The surface of the fixed plate 306 is provided with a sliding hole 1 adapted to the U-shaped rod 303, and the fixed plate 306 and the U-shaped rod 303 are slidably connected through the sliding hole 1;

[0037] The surface of the striking plate 304 is provided with a second sliding hole adapted to the U-shaped rod 303, and the striking plate 304 and the U-shaped rod 303 are slidably connected through the second sliding hole;

[0038] The inner side wall of the sliding sleeve 314 is provided with a limiting groove adapted to the bar magnet 315 , and the bar magnet 315 is clamped in the limiting groove of the sliding sleeve 314 .

[0039] In this embodiment, when using the geotechnical test sample preparation device, the U-shaped rod 303 is first pulled, and the pressing plate 302 is driven to move upward, so that the pressing plate 302 is separated from the inside of the compacting cylinder 301. Then, soil is placed in the compacting cylinder 301, and then the U-shaped rod 303 is released. At this time, the pressing plate 302 is placed on top of the soil;

[0040] Then, the sliding sleeve 314 is moved on the strip plate 313. The strip magnet 315 is provided to magnetically fix the sliding sleeve 314 in real time. Then, the sliding sleeve 314 drives the inductive proximity switch 317 to move until the inductive proximity switch 317 on the sliding sleeve 314 is moved to a specified height of the strip plate 313.

[0041] Then, the stepper motor 311 is connected to an external power source. The stepper motor 311 rotates forward and drives the rotating rod to rotate. The rotating rod drives the winding roller 312 to rotate, thereby winding the rope 308. As the rope 308 is continuously wound, the fixed plate 306 is pulled to slide upward on the U-shaped rod 303. During this process, the electromagnet 305 is energized. At this time, the magnetism generated by the electromagnet 305 attracts the striking plate 304. Then, as the fixed plate 306 moves, the striking plate 304 is driven to move upward synchronously.

[0042] During this process, when the inductive proximity switch 317 detects the moving position of the fixed disk 306, the inductive proximity switch 317 then sends an electrical signal through the controller, and cuts off the power to the electromagnet 305, and at the same time controls the stepper motor 311 to reverse operation. During this process, the electromagnet 305 loses its magnetism, thereby releasing the adsorption of the striking disk 304. At this time, the gravity of the striking disk 304 itself slides down on the U-shaped rod 303 to hit the pressing disk 302. At this time, the impact force exerted on the pressing disk 302 is used to compact the soil. As the stepper motor 311 rotates in the opposite direction, the winding rod 312 is driven to rotate in the opposite direction, thereby releasing the rope 308, and then the fixed disk 306 is moved forward. The stepper motor 311 is controlled by the controller to rotate forward, and the electromagnet 305 is energized at the same time, and the striking disk 304 is adsorbed, thereby driving the striking disk 304 to move upward, and repeating this operation to compact the soil multiple times. There is no need to manually slide the striking disk 304 frequently to compact the soil, thereby reducing the labor intensity of the staff, and ensuring that the falling height is fixed. It can also be adjusted to different heights to achieve compaction of different soil bodies, thereby ensuring the accuracy of the test results and improving the use effect of the device.

[0043] It should be noted that the inductive proximity switch 317 is a non-contact position detection device, which can generate a signal by sensing the approach of a metal object. The output signal of the inductive proximity switch 317 is connected to the control circuit. Usually, the output signal of the inductive proximity switch 317 can be a switch signal (such as a normally open or normally closed contact) or an analog signal (such as a voltage or current signal). According to the actual situation, the appropriate connection method is selected and a control program is written using a controller (such as a PLC or microcontroller) to realize the control of the electromagnet 305 and the stepper motor 311. When the inductive proximity switch 317 detects that the fixed disk 306 has moved to the specified position, the controller receives the signal from the inductive proximity switch 317 and performs corresponding operations according to the preset logic. After receiving the signal from the inductive proximity switch 317, the controller outputs a control signal to turn off the electromagnet 305. This can be achieved by controlling the power switch of the electromagnet 305 or the current of the electromagnetic coil. At the same time, an instruction is issued to make the stepper motor 311 rotate in the opposite direction. This requires setting the driving parameters of the stepper motor 311, such as the number of steps, speed and direction, to achieve the reverse movement of the stepper motor 311.

[0044] The output signal of the laser rangefinder 307 is connected to the control circuit. The laser rangefinder 307 usually outputs an electrical signal related to the measured distance, such as a digital signal. The corresponding distance value from the fixed disk 306 to the striking disk 304 is set in the control program. The controller receives the signal from the laser rangefinder 307 to control the electromagnet 305 and the stepping motor 311 in reverse order.

[0045] The inductive proximity switch 317, the electromagnet 305, the stepping motor 311 and the laser rangefinder 307 can be connected to each other using conventional technical means in the art according to actual conditions, and will not be described one by one. All power supplies are supplied by an external power supply.

[0046] Going further;

[0047] In an optional embodiment, scale lines 316 are provided on the surface of the strip plate 313 .

[0048] In this embodiment, the scale line 316 is provided to more conveniently observe the height of the sliding sleeve 314 relative to the mounting plate 2 , thereby further improving the flexibility and practicality of the device.

[0049] Going further;

[0050] In an optional embodiment, a placement groove adapted for the compacting cylinder 301 is provided on the upper surface of the mounting plate 2, and the compacting cylinder 301 is inserted into the placement groove provided on the mounting plate 2. A locking bolt 309 is threadedly connected to the interior of the mounting plate 2 through a threaded hole provided therein, and the compacting cylinder 301 is squeezed and fixed by screwing the locking bolt 309.

[0051] In this embodiment: the compacting cylinder 301 is placed in the placement groove on the mounting plate 2, and then the locking bolt 309 is rotated to squeeze the compacting cylinder 301, thereby fixing the compacting cylinder 301. This operation avoids the movement of the mounting plate 2 when the soil inside the compacting cylinder 301 is compacted, thereby further improving the use effect of the device.

[0052] The working principle and use process of the present invention are as follows: when using the geotechnical test sample maker, the U-shaped rod 303 is first pulled to drive the pressing plate 302 to move upward, so that the pressing plate 302 is separated from the inside of the compacting cylinder 301, and then the soil is placed in the compacting cylinder 301, and then the U-shaped rod 303 is loosened, and the pressing plate 302 is placed on the top of the soil; then the sliding sleeve 314 is moved on the strip plate 313, and the sliding sleeve 314 can be magnetically fixed in real time through the setting of the bar magnet 315, and then the sliding sleeve 314 drives the inductive proximity switch 317 to move until the inductive proximity switch 317 on the sliding sleeve 314 is moved to the specified height of the strip plate 313; through the scale line 316 The arrangement makes it easier to observe the height of the sliding sleeve 314 relative to the mounting plate 2, further improving the flexibility and practicality of the device; the stepper motor 311 is then connected to an external power source, and the stepper motor 311 rotates forward and drives the rotating rod to rotate, and the rotating rod drives the winding rod 312 to rotate, thereby winding the rope 308. As the rope 308 is continuously wound, the fixed plate 306 is pulled to slide upward on the U-shaped rod 303. During this process, the electromagnet 305 is energized, and the magnetism generated by the electromagnet 305 adsorbs the striking plate 304. Then, as the fixed plate 306 moves, the striking plate 304 is driven to move upward synchronously; in this During the process, when the inductive proximity switch 317 detects the moving position of the fixed disk 306, the inductive proximity switch 317 then sends an electrical signal through the controller, and cuts off the power to the electromagnet 305, and at the same time controls the stepper motor 311 to reverse operation. During this process, the electromagnet 305 loses its magnetism, thereby releasing the adsorption of the striking disk 304. At this time, the gravity of the striking disk 304 itself slides down on the U-shaped rod 303 to strike the pressing disk 302. At this time, the impact force exerted on the pressing disk 302 is used to compact the soil. As the stepper motor 311 rotates in the opposite direction, the winding rod 312 is driven to rotate in the opposite direction, thereby releasing the rope 308, and then the fixed disk 306 is Move down until the electromagnet 305 on the fixed plate 306 is close to the striking plate 304. At this time, when the laser rangefinder 307 detects the set distance, the controller controls the stepping motor 311 to rotate forward, and at the same time energizes the electromagnet 305, and adsorbs the striking plate 304, thereby driving the striking plate 304 to move up. Repeat this operation to compact the soil multiple times. There is no need to manually slide the striking plate 304 frequently to compact the soil, thereby reducing the labor intensity of the staff, and can ensure that the falling height is fixed. It can also be adjusted to different heights to achieve compaction of different soil bodies, thereby ensuring the accuracy of the test results and improving the use effect of the device.

[0053] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

Claims

1. A geotechnical test sample preparation device, comprising a bracket (1) and a mounting plate (2) fixedly mounted on the bracket (1) by bolts, characterized in that: A compaction assembly (3) is installed between the bracket (1) and the mounting plate (2); The compacting assembly (3) comprises a compacting cylinder (301) arranged on the mounting plate (2), a pressing plate (302) arranged inside the compacting cylinder (301) and adapted thereto, and a U-shaped rod (303) fixed on the upper surface of the pressing plate (302); A Z-shaped plate (310) is fixedly mounted on the top of the bracket (1) by means of bolts, and the U-shaped rod (303) can slide up and down in a through hole provided on the surface of the Z-shaped plate (310); A fixed disk (306) and a striking disk (304) are slidably mounted on the U-shaped rod (303), and an electromagnet (305) is fixed at the center of the lower surface of the fixed disk (306). The striking disk (304) is made of a rigid material and can be magnetically attracted by the electromagnet (305) when it is energized. A laser rangefinder (307) is installed inside the fixed disk (306) for monitoring the distance between the fixed disk (306) and the striking disk (304); A stepper motor (311) is mounted on one side of the surface of the Z-shaped plate (310) via bolts, a rotating rod is fixedly mounted on the output end of the stepper motor (311) via screws, and a winding rod (312) is fixed on the other end of the rotating rod, a rope (308) is wound around the surface of the winding rod (312), one end of the rope (308) is fixedly connected to the winding rod (312), and the other end of the rope (308) is fixed to the top of the fixed disk (306); A strip plate (313) is mounted on the bracket (1); a sliding sleeve (314) is slidably connected to the surface of the strip plate (313); the sliding sleeve (314) is made of an iron material; a bar magnet (315) for adsorbing and fixing the sliding sleeve (314) is fixedly mounted on the surface of the strip plate (313); and an inductive proximity switch (317) is fixedly mounted on the surface of the sliding sleeve (314).

2. The geotechnical test sample preparation device according to claim 1, characterized in that: A sliding hole 1 adapted to the U-shaped rod (303) is provided on the surface of the fixing plate (306), and the fixing plate (306) and the U-shaped rod (303) are slidably connected via the sliding hole 1.

3. The geotechnical test sample preparation device according to claim 1, characterized in that: The surface of the striking plate (304) is provided with a second sliding hole adapted to the U-shaped rod (303), and the striking plate (304) and the U-shaped rod (303) are slidably connected via the second sliding hole.

4. The geotechnical test sample preparation device according to claim 1, characterized in that: The inner side wall of the sliding sleeve (314) is provided with a limiting groove adapted to the bar magnet (315), and the bar magnet (315) is clamped in the limiting groove provided in the sliding sleeve (314).

5. The geotechnical test sample preparation device according to claim 1, characterized in that: The surface of the strip plate (313) is provided with scale lines (316).

6. The geotechnical test sample preparation device according to claim 1, characterized in that: The upper surface of the mounting plate (2) is provided with a placement groove adapted to the compacting cylinder (301), and the compacting cylinder (301) is inserted into the placement groove provided in the mounting plate (2). The interior of the mounting plate (2) is threadedly connected with a locking bolt (309) through a threaded hole provided therein, and the compacting cylinder (301) is squeezed and fixed by screwing the locking bolt (309).

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