CN211374364U

CN211374364U - Loading device for geotechnical engineering model test

Info

Publication number: CN211374364U
Application number: CN201922345340.9U
Authority: CN
Inventors: 冯光成; 贠永峰; 常凯; 毛兴万; 岳小笙; 徐国强
Original assignee: Xian University of Science and Technology
Current assignee: Xian University of Science and Technology
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-28
Anticipated expiration: 2029-12-24

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 engineering model test

Technical Field

The utility model relates to an experimental technical field of geotechnical engineering especially relates to geotechnical engineering model test's loading device.

Background

The rock-soil body and the underground structure are often subjected to the effects of static load and dynamic load at the same time, for example, the railway roadbed bears the effects of static load such as the dead weight of a track and a soil body thereof and dynamic load transmitted by a high-speed train through the track, the rock-soil body is subjected to rheological deformation caused by long-term static load, the rock-soil body is subjected to dynamic accumulative deformation caused by intermittent dynamic load, and the rheological property and the dynamic deformation property of the rock-soil body material are fully known as important preconditions for ensuring the engineering safety and stability.

Through retrieval, chinese publication No. CN208334051U discloses a "loading device for geotechnical engineering model test", wherein when performing the test, the simulated material is stacked on the load-bearing column, the load-bearing column moves downward under the gravity of the simulated material, the spring compresses to deform, the movable plate on the support rod contacts with the slider, the slider moves upward along the positioning rod, the resistance of the slide rheostat at the two ends is decreased, when the current output by the battery passes through the slide rheostat and enters the controller, the controller starts to work, the buzzer is controlled to give an alarm sound, the load-bearing gravity is prompted to reach the limit, the worker takes down the simulated material, the rheostat at the two ends is required to work while outputting the current, and the test error caused by the inclined placement of the model is prevented. "in this document, the bearing column is supported by the spring structures on both sides, the bearing column is still inclined due to unstable placement, and the placement position is not accurately positioned along with the change of the simulated material size, so that the data is not accurate enough.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcomings existing in the prior art, and providing a loading device for geotechnical engineering model test.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

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 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 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 bolster on the pillar lateral wall of movable sleeve pipe downside, and fixed connection has the horizontally backup pad between two fixed bolster, be provided with the accredited testing organization that the cooperation is connected on the relative lateral wall of backup pad and loading plate, first spring has been cup jointed in the pillar outside between movable sleeve pipe and the fixed bolster, and the both ends of first spring respectively with movable sleeve pipe and fixed sleeve pipe's lateral wall fixed connection.

Preferably, two strip-shaped grooves are formed in the upper end of the loading plate, horizontal sliding rods are fixedly connected in the strip-shaped grooves, and the limiting adjusting mechanisms are correspondingly arranged on the outer sides of the sliding rods.

Preferably, the limiting and adjusting mechanism comprises a first L-shaped baffle which is sleeved outside the sliding rod in a sliding manner, the upper end of the first L-shaped baffle is connected with a second L-shaped baffle, the second L-shaped baffle is connected with the first L-shaped baffle through a telescopic mechanism, one end, far away from the first L-shaped baffle, of the second L-shaped baffle is connected with the upper end face of the top plate, and a fixing mechanism connected with the top plate is arranged at the upper end of the second L-shaped baffle.

Preferably, telescopic machanism is including seting up the dovetail groove on first L shape baffle and the second L shape baffle lateral wall respectively, and two dovetail groove in-connections have same worker's shape pole, the both ends of worker's shape pole respectively with the inner wall sliding connection in dovetail groove.

Preferably, fixed establishment includes the casing of fixed connection in second L shape baffle upper end, sliding connection has T shape pole in the casing, the lower extreme of T shape pole runs through the casing and is connected with second L shape baffle up end, and the upper end equipartition of second L shape baffle has a plurality of constant head tanks of pegging graft with T shape pole, the upper end fixedly connected with pull rod of T shape pole, and the pull rod one end of keeping away from T shape pole extend to the upside of casing, the equal fixedly connected with second spring in T shape pole upper end of pull rod both sides, and the upper end of second spring and interior roof fixed connection of casing.

Preferably, the testing mechanism comprises a first electrode plate fixedly connected to the lower end of the loading plate, the upper end of the supporting plate is fixedly connected with a second electrode plate corresponding to the first electrode plate, the lower end of the supporting plate is fixedly connected with an alarm lamp electrically connected with the first electrode plate and the second electrode plate, and power supplies are connected in the first electrode plate and the second electrode plate.

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

1. through setting up spacing adjustment mechanism, 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 to guarantee that the simulation material is accurate inject between first L shape baffle and second L shape baffle, improve the accuracy nature of experimental data, and reduce the influence of the condition of material skew to experimental data.

2. Through setting up accredited testing organization, at the constantly loaded in-process of simulation material for the loading plate downstream, and drive the continuous compression first spring of movable sleeve pipe, treat that the first plate electrode of loading plate lower extreme contacts the back with the second plate electrode of backup pad upper end, even make the current switch-on, and then the alarm lamp scintillation shows that the extreme value of test has been reached this moment, plays warning and guard's effect to testing arrangement, and can take off experimental simulation material, accomplish the test.

Drawings

Fig. 1 is a schematic structural diagram of a loading device for geotechnical engineering model tests provided by the utility model;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partially enlarged view of B in fig. 1.

In the figure: the device comprises a base plate 1, a support column 2, a top plate 3, a movable sleeve 4, a loading plate 5, a fixed sleeve 6, a supporting plate 7, a first spring 8, a sliding rod 9, a first L-shaped baffle 10, a second L-shaped baffle 11, an I-shaped rod 12, a shell 13, a T-shaped rod 14, a pull rod 15, a second spring 16, a first electrode plate 17, a second electrode plate 18 and a warning lamp 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the loading device for geotechnical engineering model test comprises a bottom plate 1, two vertical pillars 2 are fixedly connected to the upper end of the bottom plate 1, the upper ends of the two pillars 2 are fixedly connected with a horizontal top plate 3, movable sleeves 4 are slidably sleeved on the outer sides of the pillars 2, 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, specifically, two strip-shaped grooves are formed in the upper end of the loading plate 5, horizontal sliding rods 9 are fixedly connected in the strip-shaped grooves, the limiting and adjusting mechanism is correspondingly arranged on the outer sides of the sliding rods 9, the limiting and adjusting mechanism comprises first L-shaped baffles 10 slidably sleeved on the outer sides of the sliding rods 9, second L-shaped baffles 11 are connected to the upper ends of the first L-shaped baffles 10, and the second L-shaped baffles 11 are connected with the first L-shaped baffles 10 through, specifically, the telescopic mechanism comprises trapezoidal grooves respectively formed in the side walls of a first L-shaped baffle 10 and a second L-shaped baffle 11, the same I-shaped rod 12 is connected in the two trapezoidal grooves, two ends of the I-shaped rod 12 are respectively connected with the inner wall of the trapezoidal groove in a sliding manner, one end, 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, a fixing mechanism connected with the top plate 3 is arranged at the upper end of the second L-shaped baffle 11, more specifically, the fixing mechanism comprises a shell 13 fixedly connected with the upper end of the second L-shaped baffle 11, a T-shaped rod 14 is connected in the shell 13 in a sliding manner, the lower end of the T-shaped rod 14 penetrates through the shell 13 and is connected with the upper end face of the second L-shaped baffle 11, a plurality of positioning grooves inserted into the T-shaped rod 14 are uniformly distributed at the upper end of the second L-shaped baffle 11, a pull rod 15 is fixedly connected with the upper end of the, 14 upper ends of T shape pole of 15 both sides of pull rod all fixedly connected with second spring 16, and roof fixed connection in upper end and the casing 13 of second spring 16, through setting up spacing adjustment mechanism, can adjust the interval between two first L shape baffles 10 and the second L shape baffle 11 according to the size of a dimension of simulation material when experimental, inject between first L shape baffle 10 and second L shape baffle 11 with guaranteeing that the simulation material is accurate, improve the accuracy nature of test data, and reduce the influence of the condition of material skew to test data.

Wherein, the outer side wall of the pillar 2 at the lower side of the movable sleeve 4 is fixedly sleeved with a fixed sleeve 6, a horizontal support plate 7 is fixedly connected between the two fixed sleeves 6, the side wall of the support plate 7 opposite to the loading plate 5 is provided with a testing mechanism in matching connection, the testing mechanism comprises a first electrode plate 17 fixedly connected at the lower end of the loading plate 5, 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 lamp 19 electrically connected with 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, the outer side of the pillar 2 between the movable sleeve 4 and the fixed sleeve 6 is sleeved with a first spring 8, and the two ends of the first spring 8 are respectively fixedly connected with the side walls of the movable sleeve 4 and the fixed, in the process of simulating continuous loading of materials, the loading plate 5 moves downwards and drives the movable sleeve 4 to continuously compress the first spring 8, after the first electrode plate 17 at the lower end of the loading plate 5 is contacted with the second electrode plate 18 at the upper end of the supporting plate 7, current is switched on, and then the alarm lamp 19 flickers, so that the limit value of the test is reached, the test device is warned and protected, the tested simulated materials can be taken down, and the test is completed.

When the utility model is used, the spacing 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 by arranging the limiting adjusting mechanism, so as to ensure that the simulated material is accurately limited between the first L-shaped baffles 10 and the second L-shaped baffles 11, in the specific operation, the pull rod 15 is pulled to ensure that the T-shaped rod 14 is separated from the contact with the second L-shaped baffles 11, then the position of the first L-shaped baffles 10 on the slide bar 9 is adjusted to ensure that the first L-shaped baffles are attached to the side wall of the simulated material, then the pull rod 15 is sent out to ensure that the T-shaped rod 14 is fixed with the second L-shaped baffles 11, the adjustment is completed, the influence of the material deviation on the test data is reduced, the accuracy of the test data is improved, in the test process, by arranging the testing mechanism, in the process of continuously loading the simulated material, so that the loading plate 5 moves downwards, and the movable sleeve 4 is driven to continuously compress the first spring 8, after the first electrode plate 17 at the lower end of the loading plate 5 is contacted with the second electrode plate 18 at the upper end of the supporting plate 7, the current is switched on, and then the alarm lamp 19 flickers, which shows that the limit value of the test is reached at the moment, the test device is warned and protected, and the simulated material of the test can be taken down to complete the test.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

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).