CN211374364U - Loading device for geotechnical model test - Google Patents

Abstract

The utility model discloses a geotechnical engineering model test's loading device, comprising a base plate, two vertical pillars of upper end fixedly connected with of bottom plate, and the same piece horizontally roof of upper end fixedly connected with of two pillars, the movable sleeve pipe has been cup jointed in the outside slip of pillar, and the same piece loading plate of fixedly connected with between two movable sleeve pipes, the upper end of loading plate is provided with the spacing adjustment mechanism who is connected with the roof, fixed cover has connect the fixed sleeve pipe on the pillar lateral wall of movable sleeve pipe downside, and fixed connection has the horizontally backup pad between two fixed sleeve pipes, be provided with the accredited testing organization that the cooperation is connected on the relative lateral wall of backup pad and loading plate. The utility model discloses can adjust the interval between two first L shape baffles and the second L shape baffle according to the size of a dimension of simulation material when experimental, improve the accuracy nature of experimental data to reduce the influence of the condition of material skew to experimental data.

Description

Loading device for geotechnical model test

technical field

The utility model relates to the technical field of geotechnical engineering tests, in particular to a loading device for a geotechnical engineering model test.

Background technique

Rock and soil mass and underground structures are often subjected to both static and dynamic loads. For example, the railway subgrade is subjected to static loads such as the self-weight of the track and its soil, and the dynamic load transmitted by high-speed trains through the track. Long-term static loads cause rock and soil mass. Rheological deformation occurs, and the intermittent dynamic load leads to dynamic cumulative deformation of rock and soil. Fully understanding the rheological and dynamic deformation characteristics of rock and soil materials is an important prerequisite for ensuring engineering safety and stability.

After searching, China Publication No. CN208334051U discloses "a loading device for geotechnical engineering model test. During the test, the simulated material is accumulated on the bearing column, and the bearing column is subjected to the gravity of the simulated material to move down, and the spring Compression produces deformation, the moving plate on the support rod is in contact with the slider, the slider moves up along the positioning rod, the resistance of the sliding rheostat at both ends changes from large to small, and when it is small, the current output by the battery enters the control through the sliding rheostat When the device is activated, the controller starts to work, controls the buzzer to emit an alarm sound, indicating that the weight of the load has reached the limit, and allows the staff to remove the simulated material. The structure of the work only requires sliding the rheostat at both ends and outputting current at the same time. There are It helps to prevent errors in detection caused by the inclined placement of the model." In this document, the spring structures on both sides are used to support the bearing column, which will still cause unstable placement and lead to the tilting of the bearing column. The change of material size and the position of placement are not accurately positioned, resulting in inaccurate data. For this reason, we propose a loading device for geotechnical engineering model test to further solve the above-mentioned problems.

Utility model content

The purpose of the utility model is to propose a loading device for geotechnical engineering model test in order to solve the shortcomings existing in the prior art.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A loading device for a geotechnical engineering model test includes a bottom plate, the upper end of the bottom plate is fixedly connected with two vertical pillars, and the upper ends of the two pillars are fixedly connected with the same horizontal top plate, and the outer sides of the pillars are slidably sleeved There is a movable sleeve, and the same loading plate is fixedly connected between the two movable sleeves. The upper end of the loading plate is provided with a limit adjustment mechanism connected with the top plate. A fixed sleeve is connected with a fixed sleeve, and a horizontal support plate is fixedly connected between the two fixed sleeves, and a test mechanism for matching connection is provided on the side wall opposite to the support plate and the loading plate. A first spring is sleeved on the outer side of the strut between the fixed sleeves, and two ends of the first spring are respectively fixedly connected with the side walls of the movable sleeve and the fixed sleeve.

Preferably, the upper end of the loading plate is provided with two strip-shaped grooves, and a horizontal sliding rod is fixedly connected in the strip-shaped grooves, and the limit adjustment mechanism is correspondingly arranged on the outer side of the sliding rod.

Preferably, the limit adjustment mechanism includes a first L-shaped baffle that is slidably sleeved on the outside of the sliding rod, the upper end of the first L-shaped baffle is connected with a second L-shaped baffle, and the second L-shaped baffle is connected to the upper end of the first L-shaped baffle. The plate and the first L-shaped baffle are connected by a telescopic mechanism, the end of the second L-shaped baffle away from the first L-shaped baffle is connected with the upper end surface of the top plate, and the upper end of the second L-shaped baffle is provided with a Fixing mechanism attached to the top plate.

Preferably, the telescopic mechanism includes trapezoidal grooves respectively opened on the side walls of the first L-shaped baffle and the second L-shaped baffle, and the two trapezoidal grooves are connected with the same I-shaped rod, the I-shaped rod The two ends of the trapezoidal groove are respectively slidably connected with the inner wall of the trapezoidal groove.

Preferably, the fixing mechanism comprises a casing fixedly connected to the upper end of the second L-shaped baffle, a T-shaped rod is slidably connected in the casing, and the lower end of the T-shaped rod penetrates through the casing and is connected to the second L-shaped baffle. The upper end of the board is connected to the upper end, and the upper end of the second L-shaped baffle is evenly distributed with a plurality of positioning grooves that are inserted into the T-shaped rod. The upper end of the T-shaped rod is fixedly connected with a pull rod, and the pull rod extends away from one end of the T-shaped rod. To the upper side of the housing, second springs are fixedly connected to the upper ends of the T-shaped rods on both sides of the draw rod, and the upper ends of the second springs are fixedly connected to the inner top wall of the housing.

Preferably, the testing mechanism includes a first electrode plate fixedly connected to the lower end of the loading plate, the upper end of the support plate is fixedly connected with a second electrode plate corresponding to the first electrode plate, and the lower end of the support plate is fixedly connected with a second electrode plate corresponding to the first electrode plate. The alarm light is electrically connected with the first electrode plate and the second electrode plate, and the first electrode plate and the second electrode plate are both connected with a power source.

Compared with the prior art, the beneficial effects of the present utility model are:

1. By setting the limit adjustment mechanism, the distance between the two first L-shaped baffles and the second L-shaped baffle can be adjusted according to the size of the simulated material during the test to ensure that the simulated material is accurately limited to the first L-shaped baffle. Between the first L-shaped baffle and the second L-shaped baffle, the accuracy of the test data is improved, and the influence of the material deviation on the test data is reduced.

2. By setting up the test mechanism, in the process of simulating the continuous loading of materials, the loading plate is moved downward, and the movable sleeve is driven to continuously compress the first spring, the first electrode plate at the lower end of the plate to be loaded and the first electrode plate at the upper end of the support plate. After the two electrode plates are in contact, even if the current is turned on, the alarm light flashes, indicating that the limit value of the test has been reached at this time, which acts as a warning and protection for the test device, and the simulated material can be removed to complete the test test. .

Description of drawings

Fig. 1 is the structural representation of the loading device of the geotechnical engineering model test proposed by the utility model;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

FIG. 3 is a partial enlarged view of B in FIG. 1 .

In the figure: 1 bottom plate, 2 pillars, 3 top plate, 4 movable sleeve, 5 loading plate, 6 fixed sleeve, 7 supporting plate, 8 first spring, 9 sliding rod, 10 first L-shaped baffle, 11 second L-shaped baffle, 12 I-shaped rod, 13 shell, 14 T-shaped rod, 15 pull rod, 16 second spring, 17 first electrode plate, 18 second electrode plate, 19 alarm light.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

Referring to Figures 1-3, the loading device for the geotechnical engineering model test includes a base plate 1, the upper end of the base plate 1 is fixedly connected with two vertical pillars 2, and the upper ends of the two pillars 2 are fixedly connected with the same horizontal top plate 3 , the outer side of the pillar 2 is slidably sleeved with a movable sleeve 4, and the same loading plate 5 is fixedly connected between the two movable sleeves 4, and the upper end of the loading plate 5 is provided with a limit adjustment mechanism connected with the top plate 3, specifically The upper end of the loading plate 5 is provided with two strip-shaped grooves, and a horizontal sliding rod 9 is fixedly connected in the strip-shaped grooves. The limit adjusting mechanism is correspondingly arranged on the outer side of the sliding rod 9. On the first L-shaped baffle 10 outside the sliding rod 9, the upper end of the first L-shaped baffle 10 is connected with a second L-shaped baffle 11, and the second L-shaped baffle 11 and the first L-shaped baffle 10 are connected. They are connected by a telescopic mechanism. Specifically, the telescopic mechanism includes trapezoidal grooves respectively opened on the side walls of the first L-shaped baffle 10 and the second L-shaped baffle 11, and the two trapezoidal grooves are connected with the same I-shaped rod. 12. The two ends of the I-shaped rod 12 are respectively slidably connected to the inner wall of the trapezoidal groove. The end of the second L-shaped baffle 11 away from the first L-shaped baffle 10 is connected to the upper end surface of the top plate 3, and the second L-shaped baffle 11 The upper end is provided with a fixing mechanism connected with the top plate 3. More specifically, the fixing mechanism includes a casing 13 fixedly connected to the upper end of the second L-shaped baffle 11, and a T-shaped rod 14 is slidably connected in the casing 13. The T-shaped rod The lower end of 14 penetrates through the housing 13 and is connected to the upper end surface of the second L-shaped baffle 11 , and the upper end of the second L-shaped baffle 11 is evenly distributed with a plurality of positioning grooves that are inserted into the T-shaped rod 14 , and the T-shaped rod 14 A pull rod 15 is fixedly connected to the upper end of the pull rod 15, and the end of the pull rod 15 away from the T-shaped rod 14 extends to the upper side of the housing 13. The upper ends of the T-shaped rods 14 on both sides of the pull rod 15 are fixedly connected with a second spring 16, and the second spring The upper end of 16 is fixedly connected to the inner top wall of the housing 13. By setting the limit adjustment mechanism, the space between the two first L-shaped baffles 10 and the second L-shaped baffle 11 can be adjusted according to the size of the simulated material during the test. The spacing is adjusted to ensure that the simulated material is accurately confined between the first L-shaped baffle 10 and the second L-shaped baffle 11 , improving the accuracy of the test data and reducing the influence of the material deviation on the test data.

A fixed sleeve 6 is fixedly sleeved on the outer side wall of the pillar 2 on the lower side of the movable sleeve 4, and a horizontal support plate 7 is fixedly connected between the two fixed sleeves 6. The support plate 7 is opposite to the loading plate 5 The side wall is provided with a test mechanism for matching connection. The test mechanism includes a first electrode plate 17 fixedly connected to the lower end of the loading plate 5, and the upper end of the support plate 7 is fixedly connected with a second electrode plate 18 corresponding to the first electrode plate 17. The lower end of the support plate 7 is fixedly connected with an alarm light 19 that is electrically connected to the first electrode plate 17 and the second electrode plate 18. The first electrode plate 17 and the second electrode plate 18 are both connected with a power supply, and the movable sleeve 4 is connected to the power supply. A first spring 8 is sleeved on the outer side of the pillar 2 between the fixed sleeves 6, and both ends of the first spring 8 are fixedly connected to the side walls of the movable sleeve 4 and the fixed sleeve 6 respectively. During the continuous loading of the material, the loading plate 5 moves downward, and drives the movable sleeve 4 to continuously compress the first spring 8. The first electrode plate 17 at the lower end of the plate 5 to be loaded and the second electrode plate at the upper end of the support plate 7 After 18 is contacted, even if the current is turned on, the alarm light 19 flashes, indicating that the limit value of the test has been reached at this time, which acts as a warning and protection for the test device, and the simulated material for the test can be removed to complete the test test.

When the utility model is in use, by setting the limit adjustment mechanism, the distance between the two first L-shaped baffles 10 and the second L-shaped baffles 11 can be adjusted according to the size of the simulated material during the test, so as to ensure The simulated material is precisely defined between the first L-shaped baffle 10 and the second L-shaped baffle 11. The specific operation is to pull the pull rod 15 so that the T-shaped rod 14 is out of contact with the second L-shaped baffle 11, and then Adjust the position of the first L-shaped baffle 10 on the sliding rod 9 to make it fit with the side wall of the simulated material, and then send the pull rod 15 away, so that the T-shaped rod 14 and the second L-shaped baffle 11 are fixed, and the adjustment is completed. , reduce the influence of material deviation on the test data and improve the accuracy of the test data. During the test process, by setting up a test mechanism, in the process of simulating the continuous loading of materials, the loading plate 5 moves downward and drives the movement. The sleeve 4 continuously compresses the first spring 8, and after the first electrode plate 17 at the lower end of the loading plate 5 is in contact with the second electrode plate 18 at the upper end of the support plate 7, the current is turned on, and then the alarm light 19 flashes, indicating that this When the limit value of the test has been reached, it plays the role of warning and protection for the test device, and the simulated material for the test can be removed to complete the test test.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. The loading device for the geotechnical engineering model test comprises a bottom plate (1) and is characterized in that two vertical supporting columns (2) are fixedly connected to the upper end of the bottom plate (1), the upper ends of the two supporting columns (2) are fixedly connected with a horizontal top plate (3), movable sleeves (4) are sleeved on the outer sides of the supporting columns (2) in a sliding mode, a loading plate (5) is fixedly connected between the two movable sleeves (4), a limiting and adjusting mechanism connected with the top plate (3) is arranged at the upper end of the loading plate (5), fixed sleeves (6) are fixedly sleeved on the outer side walls of the supporting columns (2) on the lower side of the movable sleeves (4), a horizontal supporting plate (7) is fixedly connected between the two fixed sleeves (6), and a testing mechanism in matched connection is arranged on the side wall, opposite to the supporting plate (7) and the loading plate (5), the outer side of the strut (2) between the movable sleeve (4) and the fixed sleeve (6) is sleeved with a first spring (8), and two ends of the first spring (8) are fixedly connected with the side walls of the movable sleeve (4) and the fixed sleeve (6) respectively.

2. The geotechnical engineering model test loading device according to claim 1, wherein the upper end of the loading plate (5) is provided with two strip-shaped grooves, horizontal sliding rods (9) are fixedly connected in the strip-shaped grooves, and the limiting adjusting mechanisms are correspondingly arranged on the outer sides of the sliding rods (9).

3. The geotechnical engineering model test loading device according to claim 2, wherein the limiting adjusting mechanism comprises a first L-shaped baffle (10) which is slidably sleeved on the outer side of the sliding rod (9), the upper end of the first L-shaped baffle (10) is connected with a second L-shaped baffle (11), the second L-shaped baffle (11) is connected with the first L-shaped baffle (10) through a telescopic mechanism, one end, far away from the first L-shaped baffle (10), of the second L-shaped baffle (11) is connected with the upper end face of the top plate (3), and a fixing mechanism connected with the top plate (3) is arranged at the upper end of the second L-shaped baffle (11).

4. The geotechnical engineering model test loading device according to claim 3, wherein the telescoping mechanism comprises trapezoidal grooves formed in the side walls of the first L-shaped baffle (10) and the second L-shaped baffle (11), the same I-shaped rod (12) is connected in the two trapezoidal grooves, and two ends of the I-shaped rod (12) are respectively connected with the inner walls of the trapezoidal grooves in a sliding mode.

5. The geotechnical engineering model test loading device according to claim 3, the fixing mechanism comprises a shell (13) fixedly connected with the upper end of the second L-shaped baffle plate (11), a T-shaped rod (14) is connected in the shell (13) in a sliding way, the lower end of the T-shaped rod (14) penetrates through the shell (13) and is connected with the upper end surface of the second L-shaped baffle (11), a plurality of positioning grooves which are spliced with the T-shaped rods (14) are uniformly distributed at the upper ends of the second L-shaped baffles (11), pull rods (15) are fixedly connected at the upper ends of the T-shaped rods (14), and one end of the pull rod (15) far away from the T-shaped rod (14) extends to the upper side of the shell (13), the upper ends of the T-shaped rods (14) at the two sides of the pull rod (15) are fixedly connected with second springs (16), and the upper end of the second spring (16) is fixedly connected with the inner top wall of the shell (13).

6. The geotechnical engineering model test loading device according to claim 1, wherein the testing mechanism comprises a first electrode plate (17) fixedly connected to the lower end of the loading plate (5), the upper end of the supporting plate (7) is fixedly connected with a second electrode plate (18) corresponding to the first electrode plate (17), the lower end of the supporting plate (7) is fixedly connected with an alarm lamp (19) electrically connected with the first electrode plate (17) and the second electrode plate (18), and a power supply is connected to the inside of each of the first electrode plate (17) and the second electrode plate (18).

Images