CN110409358B

CN110409358B - Geotechnical model test long-term circulating water level lifting control device

Info

Publication number: CN110409358B
Application number: CN201910731489.2A
Authority: CN
Inventors: 廖蔚茗; 徐洪; 何飞; 秦代伦; 陈立川; 魏世玉; 周鹏; 陈正华; 王�琦; 傅饶
Original assignee: Chongqing Institute of Geology and Mineral Resources
Current assignee: Chongqing Institute of Geology and Mineral Resources
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2021-07-09
Anticipated expiration: 2039-08-08
Also published as: CN110409358A

Abstract

The invention belongs to the field of water level control, and particularly relates to a long-term circulating water level lifting control device for an geotechnical model test, which comprises an experimental platform, a model box, a water tank, a longitudinally arranged slide rail, a balance mechanism, a pulley block and a connecting rope, wherein the water tank is provided with a slide block matched with the slide rail, and is communicated with the model box through a connecting pipe; the movable pulley of the pulley block is arranged at the top of the sliding frame, the fixed pulley of the pulley block is fixed on the ground, one end of the connecting rope is connected to the water tank, and the other end of the connecting rope penetrates through the pulley block and is connected to the balance mechanism. Compare with water level control devices such as traditional utilization atmospheric pressure, this scheme utilizes pure mechanical structure, simple structure, and the measuring result is accurate, and circulated use, relapse long-term lift water level many times, and stability is better.

Description

Geotechnical model test long-term circulating water level lifting control device

Technical Field

The invention belongs to the field of water level control, and particularly relates to a long-term circulating water level lifting control device for an geotechnical model test.

Background

Different from other land or seabed natural slopes, the reservoir banks such as river banks, embankments, reservoirs and the like are influenced by long-term water level elevation, and slope instability is easily induced to form collapse or landslide under the action of cyclic 'supplement-discharge' seepage. The geotechnical model test can not only quantitatively research the influence of water level elevation on the interaction inside a slope body, but also visually simulate the whole life process from continuous to discontinuous before and after the bank slope is unstably started, so that the geotechnical model test can be widely applied to research on the influence of water level fluctuation on the bank slope.

The accurate reduction of the water level lifting process in the geotechnical model test is one of important preconditions for ensuring the accuracy and reliability of the test result. However, the existing water level lifting device mainly aims at short-term water level lifting, such as water level sudden drop or sudden rise, when the water level long-term lifting is simulated, because the structure of the device is complex and difficult to ensure the accurate control of the long-term water level lifting process, and most of the existing equipment needs to press water into or discharge water out of a model box through modes such as air pressure control, the requirement on the control device is high, and then the cost of the device is high, and the long-term stability is difficult to ensure.

Disclosure of Invention

The purpose of this scheme is to provide a simple structure, can guarantee to the geotechnological model test long-term circulation water level lift control device of the accurate control of long-term water level lift process.

In order to achieve the purpose, the scheme provides a long-term circulating water level lifting control device for an geotechnical model test, which comprises an experiment platform, a model box and a water tank, and further comprises a slide rail, a balance mechanism, a pulley block and a connecting rope which are longitudinally arranged, wherein the water tank is provided with a slide block matched with the slide rail, and is communicated with the model box through a connecting pipe; the movable pulley of the pulley block is arranged at the top of the sliding frame, the fixed pulley of the pulley block is fixed on the ground, one end of the connecting rope is connected to the water tank, and the other end of the connecting rope penetrates through the pulley block and is connected to the balance mechanism.

The principle and the beneficial effect of the scheme are that: the balance mechanism is controlled to drive the connecting rope to move, the pulley block is finally utilized to drive the water tank to move up and down on the slide rail, and when the water tank moves up, water in the water tank can enter the model box, so that the water level in the model box rises; when the water tank moves down, the water in the model tank can enter the water tank, so that the water level in the model tank is lowered. And the influence of the water level on the slope body can be conveniently measured by the rising and falling of the water level. Compare with water level control devices such as traditional utilization atmospheric pressure, this scheme utilizes pure mechanical structure, simple structure, and the measuring result is accurate, and circulated use, relapse long-term lift water level many times, and stability is better.

Further, the balance mechanism comprises a fixing seat and a swing rod, the middle of the swing rod is hinged to the fixing seat, one end of the connecting rope is connected to the water tank, the other end of the connecting rope penetrates through the pulley block and is connected to one end of the swing rod, and the other end of the swing rod is provided with a balancing weight. Through increasing or reducing the balancing weight, then the position of adjustment water tank that can be convenient need not other power structure, and the operation is simpler.

Further, still include motor and planetary gear set, the motor is connected with planetary gear set's action wheel, planetary gear set's planet wheel is equipped with the connecting axle, and this connecting axle is articulated with the swinging arms through connecting the rope, and the pin joint of connecting axle and swinging arms is located between the pin joint of balancing weight and fixing base and swinging arms. The control motor rotates to drive the driving wheel to rotate, and then drives the planetary gear to move, so that the connecting wheel connected to the planetary gear is pulled, and finally the oscillating rod swings to drive the water tank to move up and down.

The water tank is controlled to move in such a way, on one hand, the rotation controllability of the motor is strong, and the balancing weight acts as a balance function at the moment, so that the water tank is very stable to move.

Further, the connecting pipe is a hose. The hose has stronger adaptability and is more suitable for the water tank moving back and forth.

Furthermore, a valve is arranged on the connecting pipe. The water inlet and outlet amount of the model box can be set through the valve, and the controllability is higher.

Furthermore, the model box and the water tank are connected through a hose to form a communicating vessel, and an expected water head difference is generated in the water tank and the model box by controlling the water tank to move up and down in a reciprocating manner, so that the control of the water level in the model box is realized.

Further, the number of the connecting pipes is multiple. The multiple connecting pipes can make the flow in the water tank and the model tank more uniform, the fluctuation is smaller, and the stability is higher.

Further, the motor is a servo motor. Compared with a common motor, the rotation of the servo motor can be controlled more accurately, and the servo motor can conveniently rotate forwards and backwards, so that the effect is better.

Further, the mold box is a transparent organic mold box. The transparent organic mold box can more conveniently and clearly check the slope change in the mold box.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: experiment table 10, model box 11, water level 13, connecting pipe 14, valve 15, slide rail 20, water tank 21, movable pulley 22, fixed pulley 23, fixing base 30, swinging arms 31, balancing weight 32, planetary gear set 33.

As shown in figure 1, a lifting control device for a long-term circulating water level 13 of an geotechnical model test comprises a model box 11, a slide rail 20 and a balancing mechanism from right to left. Model box 11 sets up on laboratory bench 10, and the upper end of model box 11 is equipped with ventilative mouthful, and it adopts transparent glass material to make, conveniently looks over the influence of water level 13 to the slope. A plurality of connecting pipes 14 are provided at a lower left side of the mold box 11 to make the flow rate more uniform. The connecting pipe 14 is a hose, and is more convenient to use. A valve 15 is provided on each connecting pipe 14 to better control the flow.

The side of the water tank 21 is provided with a slide block which can be matched with the slide rail 20, so that the water tank 21 can move back and forth on the slide rail 20. The specific structure of the slide rail 20 can adopt a dovetail groove, and other types of slide rails 20 have no yarn problem at this time. The slide rail 20 is inverted u-shaped. The pulley block comprises a movable pulley 22 and a fixed pulley 23, the movable pulley 22 is installed at the uppermost part of the slide rail 20, and the fixed pulley 23 is installed on the ground and is positioned at the left side of the slide rail 20. A connecting rod is welded in the water tank 21, one end of the connecting rope is connected to the connecting rod, and the other end of the connecting rope bypasses the movable pulley 22 and the fixed pulley 23 for one time and is finally connected to the balance mechanism.

The balance mechanism comprises a fixed seat 30, a motor, a swing rod 31, a planetary gear set 33 and a balancing weight 32. The fixing base 30 is installed on the ground and fixed at a middle position. The swing lever 31 is hinged to the fixed seat 30. The right end of the swing lever 31 is connected with the connecting rope, and the left end is connected with the balancing weight 32. The weight 32 may be formed by a plurality of small weights 32 having the same weight, which facilitates weight increase and weight reduction.

Between the weight 32 and the fixed seat 30 is a planetary gear set 33 and a motor (not shown). The planetary gear set 33 may be a conventional planetary gear set 33 having a drive wheel coupled to the output of the motor and a planetary gear in meshing engagement with and rotatable about the drive wheel. The central axis of the planetary gear is extended and a connecting rope is connected to the central axis, and the other end of the connecting rope is connected to the swing lever 31, preferably in an articulated manner.

In the specific operation process, the motor is controlled to rotate through the transmission module to drive the driving wheel to rotate, so that the planetary gear is driven to move, the connecting wheel connected to the planetary gear is pulled, and finally the swinging rod 31 swings to drive the water tank 21 to move up and down. The movement of the water tank 21 creates a difference in water levels 13 between the water tank 21 and the model box 11, between which water flows, thereby adjusting the water level 13 of the model box 11. Compare with water level 13 controlling means such as traditional utilization atmospheric pressure, this scheme utilizes pure mechanical structure, simple structure, and the measuring result is accurate, and circulated use, relapse long-term lift water level 13 many times, and stability is better.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides an experimental long-term circulation water level lift control device of geotechnical model, includes experiment platform, mold box and water tank, its characterized in that: the water tank is provided with a sliding block matched with the sliding rail, and is communicated with the model box through a connecting pipe; the movable pulley of the pulley block is arranged at the top of the sliding frame, the fixed pulley of the pulley block is fixed on the ground, one end of the connecting rope is connected to the water tank, and the other end of the connecting rope penetrates through the pulley block and is connected to the balance mechanism; the balance mechanism comprises a fixed seat and a swing rod, the middle part of the swing rod is hinged to the fixed seat, one end of the connecting rope is connected to the water tank, the other end of the connecting rope penetrates through the pulley block and is connected to one end of the swing rod, the other end of the swing rod is provided with a balancing weight, the connecting pipe is a hose, the balance mechanism is controlled to drive the connecting rope to move, the pulley block is utilized to drive the water tank to move up and down on the sliding rail, when the water tank moves up, water in the water tank can enter the model box, and the water level in the model box is; when the water tank moves down, the water in the model tank can enter the water tank, so that the water level in the model tank is lowered.

2. The geotechnical model test long-term circulating water level lifting control device according to claim 1, characterized in that: still include motor and planetary gear set, the motor is connected with planetary gear set's action wheel, planetary gear set's planet wheel is equipped with the connecting axle, and this connecting axle is articulated with the swinging arms through connecting the rope, and the pin joint of connecting axle and swinging arms is located between the pin joint of balancing weight and fixing base and swinging arms.

3. The geotechnical model test long-term circulating water level lifting control device according to claim 1, characterized in that: and a valve is arranged on the connecting pipe.

4. The geotechnical model test long-term circulating water level lifting control device according to claim 1, characterized in that: the number of the connecting pipes is multiple.

5. The geotechnical model test long-term circulating water level lifting control device according to claim 2, characterized in that: the motor is a servo motor.

6. The geotechnical model test long-term circulating water level lifting control device according to claim 1, characterized in that: the mold box is a transparent organic glass plate side wall mold box.