Coarse-grained soil permeameter

Abstract

The utility model relates to the technical field of penetration tests, in particular to a coarse-grained soil permeameter, which comprises a test board and a permeameter body arranged on the test board, and is characterized by comprising a lifting plate, a water supply tank mounted on the lifting plate, and a lifting driving mechanism used for driving the lifting plate to ascend or descend, the water supply tank is connected with the permeameter body through a water inlet pipe; the lifting driving mechanism drives the lifting plate to drive the water supply tank to ascend or descend, the water supply height of the water supply tank is stably adjusted, the pressure borne by a soil body in actual engineering is simulated, and manual lifting by experimenters is not needed; according to the utility model, a water source can be stably lifted in the experiment process so as to simulate the pressure borne by a soil body in actual engineering, so that the experiment process is more time-saving and labor-saving, and the labor intensity of experimenters is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of permeation test, concretely to a coarse-grained soil permeameter. BACKGROUND

[0002] The coarse-grained soil permeameter is a checking instrument, which is mainly used for measuring the vertical permeation coefficient of a coarse-grained soil sample when seepage water passes through, the critical slope (piping) of the gradual loss of fine particles with seepage, and the damage slope (soil flow) of the overall floating of the soil body. In order to simulate the pressure on the soil body in actual engineering, the existing coarse-grained soil permeameter needs to be manually lifted by the experimental personnel during the experimental process. Since the water source is heavy, it is difficult to lift the water source smoothly, which makes the experimental process time-consuming and laborious, and increases the labor intensity of the experimental personnel. UTILITY MODEL CONTENT

[0003] The utility model aims at the above-mentioned shortage, provides a coarse-grained soil permeameter, can lift the water source smoothly in the experimental process, simulates the pressure on the soil body in actual engineering, makes the experimental process more time-saving and labor-saving, and reduces the labor intensity of the experimental personnel.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A coarse-grained soil permeameter, comprising a test table, a permeameter body arranged on the test table, characterized by: a lifting plate, a water supply tank installed on the lifting plate, a lifting drive mechanism used for driving the lifting plate to ascend or descend, and a water inlet pipe connecting the water supply tank and the permeameter body.

[0006] Further, the lifting drive mechanism comprises a base fixed on the test table, parallelly arranged connecting rods one and two, parallelly arranged connecting rods three and four, a motor fixed on the base, a rotating shaft one fixed on the base, a lead screw drivingly connected to the output shaft of the motor, a sliding seat screwed on the lead screw, the connecting rods one and three and the connecting rods two and four are rotatably and crossly connected through shaft bodies, the top ends of the connecting rods one, two, three and four are rotatably connected to the lifting plate through fixing shafts, the bottom ends of the connecting rods one and two are rotatably connected to the rotating shaft one, the connecting rods two and four are rotatably connected through a rotating shaft two, the rotating shaft one is parallel to the rotating shaft two, and the rotating shaft two is fixedly connected to the sliding seat.

[0007] Further, the base is symmetrically provided with a sliding groove, and a roller is rotatably connected in the sliding groove, and the end of the rotating shaft two is fixedly connected to the roller.

[0008] Further, a through hole is arranged on the lifting plate.

[0009] Further, the lifting driving mechanism is electrically connected with a controller.

[0010] The utility model discloses beneficial effect is:

[0011] In practical application, the water supply tank is lifted or lowered by the lifting driving mechanism to drive the lifting plate, the water supply height of the water supply tank is adjusted stably, the pressure on the soil in the actual engineering is simulated, and manual lifting of the experimental personnel is not needed; the utility model can lift the water source stably in the experimental process to simulate the pressure on the soil in the actual engineering, so that the experimental process is more time-saving and labor-saving, and the labor intensity of the experimental personnel is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 It is the schematic diagram of the lifting driving mechanism and the lifting plate structure in the utility model. DETAILED DESCRIPTION

[0014] As shown in Figure 1 and Figure 2 A coarse-grained soil permeameter, comprising a test table 1, a permeameter body 2 arranged on the test table 1, characterized in that a lifting plate 3 is arranged on the lifting plate 3, a water supply tank 4 is arranged on the lifting plate 3, a lifting driving mechanism 5 is arranged for driving the lifting plate 3 to ascend or descend, and the water supply tank 4 is connected with the permeameter body 2 through a water inlet pipe.

[0015] In use, the water supply tank 4 is lifted or lowered by the lifting driving mechanism 5 to drive the lifting plate 3, the water supply height of the water supply tank 4 is adjusted stably, the pressure on the soil in the actual engineering is simulated, and manual lifting of the experimental personnel is not needed; the utility model can lift the water source stably in the experimental process to simulate the pressure on the soil in the actual engineering, so that the experimental process is more time-saving and labor-saving, and the labor intensity of the experimental personnel is reduced.

[0016] As shown in Figure 1 and Figure 2As shown in the drawings, the lifting driving mechanism 5 comprises a base 51 fixed on the test table 1, parallelly arranged connecting rod one 52 and connecting rod two 53, parallelly arranged connecting rod three 54 and connecting rod four 55, a motor 56 fixed on the base 51, a rotating shaft one 57 fixed on the base 51, a lead screw 58 drivingly connected on the output shaft of the motor 56, a sliding seat 59 screwed on the lead screw 58, the connecting rod one 52 and the connecting rod three 54, the connecting rod two 53 and the connecting rod four 55 are cross-rotatably connected through shaft bodies 510 respectively, the top ends of the connecting rod one 52, the connecting rod two 53, the connecting rod three 54 and the connecting rod four 55 are rotatably connected with the lifting plate 3 through fixed shafts respectively, the bottom ends of the connecting rod one 52 and the connecting rod two 53 are rotatably connected on the rotating shaft one 57, the connecting rod two 53 and the connecting rod four 55 are rotatably connected through a rotating shaft two 511, the rotating shaft one 57 is parallel to the rotating shaft two 511, and the rotating shaft two 511 is fixedly connected with the sliding seat 59; in this embodiment, when the water supply tank 4 rises, the motor 56 drives the lead screw 58 to drive the sliding seat 59 to slide, the sliding seat 59 drives the rotating shaft two 511 to move close to the rotating shaft one 57, so that the water supply tank 4 rises; when the water supply tank 4 falls, the motor 56 reversely drives the lead screw 58 to drive the sliding seat 59 to slide, the sliding seat 59 drives the rotating shaft two 511 to move away from the rotating shaft one 57, so that the water supply tank 4 falls.

[0017] As shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, the base 51 is symmetrically provided with a sliding groove 512, a roller 513 is rotatably connected in the sliding groove 512, and the end of the rotating shaft two 511 is fixedly connected with the roller 513; in this embodiment, the rotating shaft two 511 is guided by the roller 513 rotatably connecting the sliding groove 512 during the process of moving close to or away from the rotating shaft one 57, so that the lifting is more stable.

[0018] As shown in the drawings, Figure 1 and Figure 2 As shown in the drawings, the lifting plate 3 is provided with a through hole; in this embodiment, the water inlet pipe is wired through the through hole.

[0019] As shown in the drawings, Figure 1 and Figure 2 Further comprising a controller, and the lifting driving mechanism 5 is electrically connected with the controller; in this embodiment, the height of the water supply tank 4 can be adjusted by controlling the lifting driving mechanism 5 through the controller.

[0020] The specific embodiments described herein are merely illustrative of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or use similar ways to replace, but will not deviate from the scope defined by the present application.

Claims

1. A coarse-grained soil permeameter, comprising a test platform and a permeameter body disposed on the test platform, characterized in that: A lifting plate, a water supply tank mounted on the lifting plate, and a lifting drive mechanism for driving the lifting plate to rise or fall are provided. The water supply tank is connected to the osmometer body via an inlet pipe.

2. The coarse-grained soil permeameter according to claim 1, characterized in that, The lifting drive mechanism includes a base fixed on the test bench, two parallel connecting rods (one and two), two parallel connecting rods (three and four), a motor fixed on the base, and a rotating shaft fixed on the base. A lead screw is driven and connected to the output shaft of the motor, and a slide is screwed onto the lead screw. Connecting rods one and three, and connecting rods two and four are rotatably and crosswise connected by shafts. The top ends of connecting rods one, two, three, and four are rotatably connected to a lifting plate by fixed shafts. The bottom ends of connecting rods one and two are rotatably connected to rotating shaft one. Connecting rods two and four are rotatably connected by rotating shaft two. Rotating shaft one is parallel to rotating shaft two, and rotating shaft two is fixedly connected to the slide.

3. The coarse-grained soil permeameter according to claim 2, characterized in that, The base is symmetrically provided with sliding grooves, and rollers are tumblingly connected in the sliding grooves. The end of the rotating shaft is fixedly connected to the rollers.

4. A coarse-grained soil permeameter according to claim 1, characterized in that, The lifting plate is provided with through holes.

5. A coarse-grained soil permeameter according to claim 1, characterized in that, It also includes a controller, and the lifting drive mechanism is electrically connected to the controller.

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