Automatic soil filling device for model tank test

Abstract

The utility model discloses an automatic soil filling device for a model tank test. The automatic soil filling device comprises a transport vehicle and two belt conveyors, a movable bottom plate is installed at the bottom of the transport vehicle, one end of the movable bottom plate is rotationally connected with a transport vehicle body, and the other end of the movable bottom plate is connected with the transport vehicle body through a magnetic attraction structure. The two belt conveyors are arranged in parallel and are spaced by a set distance; wheels on the two sides of the transport vehicle are located on the two belt conveyors respectively, a plurality of anti-backing limiting blocks are arranged on the belt conveyors at intervals, and the transport vehicle is located between the two anti-backing limiting blocks; according to the utility model, automatic soil filling can be realized in the test process of the model tank, the use of manpower is reduced, the soil filling time is effectively shortened, and the test efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of soil filling devices for model tests, specifically relating to an automated soil filling device for model trench tests. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] Soft soil foundations possess unfavorable physical and mechanical properties such as high water content, low bearing capacity, and high compressibility, severely impacting the stability and durability of transportation facilities. Faced with these engineering challenges, the civil engineering field has developed a series of foundation treatment technologies over its long history. These include methods such as embankment construction using lightweight fill materials and vacuum preloading consolidation. Among these, pile-supported embankments are a classic and effective soft soil foundation treatment technology. This method involves arranging piles within the soft soil foundation. Due to the significant difference in stiffness between the piles and the soil, most of the load from the upper embankment is transferred to the piles, which then effectively transfer the load to the underlying bearing layer. This process primarily relies on two key load transfer mechanisms: the soil arching effect and the tensile membrane effect.

[0004] To study the influence of factors such as embankment height, soft soil properties, and pile spacing on the extent to which soil arching and tensile membrane effects are realized in pile-supported embankments, most existing technologies use scaled-down model trenches, which differ significantly from actual field conditions. Using 1:1 model trenches to simulate typical embankment sections presents challenges due to the large amount of backfilling work and the difficulty of conducting experiments. In existing technologies, a slide-type model test soil filling device is provided for filling large-sized model troughs. The test soil is loaded into a small cart, and then manually lifted to pour it into a slide. The soil then slides into the model box. This method has the following problems: The cart needs to be manually pushed to a higher position, and the soil needs to be manually lifted to pour it into the slide, making the whole process time-consuming and labor-intensive. Furthermore, filling via the slide can only deliver soil to a fixed position. If the length and width of the test trough are large, there will be a significant height difference between the slide outlet and other positions, requiring manual leveling after filling, resulting in a long test cycle. Therefore, existing model trough tests suffer from low filling efficiency, cumbersome operation, and heavy reliance on manual operation, which is not only time-consuming and labor-intensive but also makes it difficult to ensure the uniformity and consistency of the filling. Utility Model Content

[0005] The purpose of this invention is to provide an automated soil filling device for model trench testing, which can automatically fill soil during the model trench test, reduce the use of manpower, effectively shorten the soil filling time, and improve the efficiency of the test.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] In a first aspect, embodiments of this utility model provide an automated soil filling device for model trench testing, comprising a transport vehicle and two belt conveyors; the bottom of the transport vehicle is equipped with a movable base plate, one end of which is rotatably connected to the vehicle body, and the other end of which is connected to the vehicle body via a magnetic attraction structure; the two belt conveyors are arranged in parallel and spaced apart by a predetermined distance; the wheels on both sides of the transport vehicle are respectively located on the two belt conveyors, and multiple anti-reverse limit blocks are spaced apart on the belt conveyors, with the transport vehicle located between two anti-reverse limit blocks.

[0008] As a further technical solution, the belt conveyor includes a rising section, a horizontal section and a falling section connected in sequence. The entire belt conveyor is supported by a conveyor bearing beam and a conveyor bearing rod, and bearing beam rollers are provided at the bottom of the conveyor bearing beam.

[0009] As a further technical solution, the rising part and the falling part are located on both sides of the model groove and are inclined, while the horizontal part is located at the top of the model groove and is horizontal.

[0010] As a further technical solution, the model trench includes an upper trench and a lower trench, which are connected by bolts. The model trench is filled from bottom to top with a gravel layer, a sand layer, and a soft soil layer, and multiple rigid end-bearing piles are buried in the soft soil layer.

[0011] As a further technical solution, the bearing beam rollers are omnidirectional wheels, and the omnidirectional wheels are equipped with locking devices.

[0012] As a further technical solution, the magnetic attraction structure uses an electromagnet, which is fixed to the end of the movable base plate. The electromagnet is controlled to be energized and de-energized by a control knob.

[0013] As a further technical solution, when the electromagnet is energized, it attracts the movable base plate; when the electromagnet is de-energized, it disconnects from the movable base plate.

[0014] As a further technical solution, the anti-reverse limiting block is a wedge-shaped block, with the inclined surface of the wedge-shaped block facing the front end of the transport vehicle and the flat surface of the wedge-shaped block facing the rear end of the transport vehicle.

[0015] As a further technical solution, the bottom of the transport vehicle is provided with two fixed base plates and one movable base plate, the movable base plate being located between the two fixed base plates, and two wheels being installed on each of the two fixed base plates.

[0016] As a further technical solution, the interval between the two belt conveyors is greater than the width of the movable base plate.

[0017] The beneficial effects of the above-described embodiments of this utility model are as follows:

[0018] The automated soil filling device for model trench testing provided by this utility model transports a vehicle carrying test soil to the top of the model trench via a belt conveyor. The movable base plate at the bottom of the vehicle is attracted to the vehicle body by an electromagnet. The movable base plate is opened by de-energizing the electromagnet, thus completing the soil filling process. The entire soil filling process only requires manual operation of a control knob to control the on / off state of the electromagnet. After unloading the fill material, the movable base plate is lifted manually so that the electromagnet on the movable base plate can be brought close to the vehicle for attraction. This saves manpower and automates most of the soil filling process, significantly shortening the test preparation time.

[0019] The automated soil filling device for model trench testing provided by this utility model is equipped with anti-reverse limit blocks on the belt conveyor. The anti-reverse limit blocks can prevent the transport vehicle from reversing during transportation. Multiple anti-reverse limit blocks are set, and a transport trolley can be placed between two anti-reverse limit blocks, which can realize continuous soil filling operation. Moreover, the movable bottom plate can be opened at any position in the length direction of the model trench for unloading, avoiding the accumulation of test soil and eliminating the need for leveling.

[0020] The automated soil filling device for model trench testing provided by this utility model features a belt conveyor supported by a conveyor support beam and a conveyor support rod. The bottom of the conveyor support beam is equipped with casters, which makes the belt conveyor easy to move and can be moved to fill soil on any model trench as needed, thus improving the applicability of the device. When the model trench is wide, it can also be moved in the width direction to ensure the uniformity of the soil filling effect. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0022] Figure 1 This is a schematic diagram of the structure of the automated soil filling device for model trench testing according to this utility model;

[0023] Figure 2 This is a schematic diagram of the movable floor of the transport vehicle of this utility model when it is closed;

[0024] Figure 3 This is a schematic diagram of the movable floor of the transport vehicle of this utility model when it is opened;

[0025] Figure 4 This is a schematic diagram of the structure of the model groove of this utility model.

[0026] The diagram is for illustrative purposes only.

[0027] Among them, 1. Belt conveyor; 101. Rising section; 102. Horizontal section; 103. Falling section; 2. Conveyor bearing beam; 3. Anti-reverse limit block; 301. Inclined surface; 302. Horizontal surface; 4. Transport vehicle; 5. Model trough connecting nut; 6. Lower trough body; 7. Bearing beam roller; 8. Drainage hole; 9. Conveyor bearing rod; 10. Model trough; 11. Model trough connecting bolt; 12. Upper trough body; 13. Transport vehicle wheel; 14. Electromagnet; 15. Magnetic control knob; 16. Movable base plate; 17. Fixed base plate. Detailed Implementation

[0028] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0029] Example 1

[0030] In a typical embodiment of this utility model, such as Figure 1-4 As shown, an automated soil filling device for model trench testing is provided, including a transport vehicle 4 and two belt conveyors 1; the bottom of the transport vehicle 4 is equipped with a movable base plate 16, one end of which is rotatably connected to the body of the transport vehicle 4, and the other end is connected to the body of the transport vehicle 4 via a magnetic attraction structure; the two belt conveyors 1 are arranged in parallel and spaced apart by a set distance; the wheels on both sides of the transport vehicle 4 are respectively located on the two belt conveyors 1, and multiple anti-reverse limit blocks 3 are spaced apart on the belt conveyors, with the transport vehicle 4 located between two anti-reverse limit blocks 3.

[0031] By using parallel arrangement of dual belt conveyors and anti-reverse limit blocks, the transport vehicle is kept stable during operation, avoiding deviation or tipping caused by uneven force on one side; the magnetic movable bottom plate design enables precise and controllable unloading of soil, improving automation and filling efficiency.

[0032] In this embodiment, the belt conveyor 1 includes a rising section 101, a horizontal section 102, and a descending section 103 connected in sequence. The entire belt conveyor 1 is supported by a conveyor support beam 2 and a conveyor support rod 9. A support beam roller 7 is provided at the bottom of the conveyor support beam 2. Three sets of conveyor support beams are provided, located at the connection between the rising and horizontal sections, the middle of the horizontal section, and the connection between the horizontal and descending sections, respectively. The conveyor support beams are connected by the conveyor support rod, supporting the conveyor belt. The overall support of the belt conveyor is achieved through the conveyor support beams and the conveyor support rod. The belt conveyor adopts an existing structure. To facilitate the movement of the belt conveyor, the support beam rollers are universal wheels, and locking devices are installed on the universal wheels. The support beam rollers and locking mechanism adopt an existing structure. In use, the entire belt conveyor is moved to the desired position by moving the support beam rollers, and then the locking mechanism locks the rollers to prevent movement during the backfilling process.

[0033] Furthermore, the rising section 101 and the falling section 103 are located on both sides of the model trough and are inclined, while the horizontal section 102 is located at the top of the model trough and is horizontal. A transport vehicle carrying test soil rises to the top of the model trough via the rising section of the belt conveyor. During the movement of the horizontal section, the movable bottom plate is opened, and the test soil is unloaded into the model trough under gravity. Then, the movable bottom plate is closed, and the transport vehicle falls to the bottom via the falling section of the belt conveyor. During the rising process of the transport vehicle, the anti-reverse limit block prevents the transport vehicle from reversing.

[0034] like Figure 4 As shown, the model tank 10 includes an upper tank body 12 and a lower tank body 6. The upper tank body 12 and the lower tank body 6 are connected by model tank connecting bolts 11 and model tank connecting nuts 5. The model tank is filled with a gravel layer, a sand layer, and a soft soil layer from bottom to top to simulate a real soft soil stratum. Multiple rigid end-bearing piles are embedded in the soft soil layer to simulate piles in the stratum. Multiple drainage holes 8 are also provided at the bottom of the model tank for drainage and consolidation.

[0035] like Figure 2 and Figure 3 As shown, the magnetic attraction structure uses an electromagnet 14, which is fixed to the end of the movable base plate 16. The electromagnet 14 is energized and de-energized via a magnetic control knob 15. Specifically, when the electromagnet is energized, it attracts the movable base plate; when the electromagnet is de-energized, it disconnects from the movable base plate, thus realizing the soil loading and unloading process. The electromagnet and magnetic control knob used are directly adopted from existing structures. The entire transport vehicle is made of iron.

[0036] Furthermore, the bottom of the transport vehicle is provided with two fixed base plates 17 and one movable base plate 16. The movable base plate 16 is located between the two fixed base plates 17, and two wheels are respectively installed on the two fixed base plates. The interval between the two belt conveyors is greater than the width of the movable base plate but less than the width of the transport vehicle, so as to ensure that the transport vehicle can be transported on the belt conveyors, while the movable base plate can unload soil between the two belt conveyors.

[0037] In this embodiment, the anti-reverse limiting block 3 is a wedge-shaped block, with the inclined surface 301 of the wedge-shaped block facing the front end of the transport vehicle and the horizontal surface 302 of the wedge-shaped block facing the rear end of the transport vehicle. The flat surface of the wedge-shaped block blocks the rear wheels of the transport vehicle, preventing the transport vehicle from reversing, and the inclined surface of the wedge-shaped block provides assistance during the descent of the transport vehicle.

[0038] The working process of the automated soil filling device for model trench testing provided in this embodiment is as follows:

[0039] The belt conveyor is pushed to the top of the mold trough by the movable rollers at the bottom of the conveyor support beam, and then the conveyor support beam and conveyor support rod in the middle of the mold trough are installed to prevent the belt conveyor from collapsing when transporting filler.

[0040] The wheels of the transport vehicle carrying the test soil are placed on two conveyors. The conveyors smoothly move the vehicle to the unloading position. A manual control knob is turned to de-energize the electromagnet, causing the movable base plate to open automatically under the weight of the test soil. The soil falls into the model trough, completing the filling of the designated area. The base plate is then gently lifted manually, energizing the electromagnet and causing it to close, allowing the transport vehicle to return.

[0041] Fill the gravel layer and sand layer in sequence according to the above method. After the sand layer is filled, remove the belt conveyor and install the pile body. After the pile body is installed, fill in the soft soil and then fill in the embankment in sequence. When it is necessary to increase the height of the model trough, the upper part of the model trough can be installed through the model trough connecting bolts and model trough connecting nuts. After installation, a waterproof membrane can be laid on the inner wall of the model trough to prevent water leakage.

[0042] After the embankment is filled, drainage holes are opened for drainage and consolidation. The simulation investigates the effects of varying pile spacing or embankment height on the embankment arching effect and differential settlement between piles and soil.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automated soil filling device for model trench testing, characterized in that, The system includes a transport vehicle and two belt conveyors. The transport vehicle has a movable base plate installed at its bottom. One end of the movable base plate is rotatably connected to the transport vehicle body, and the other end is connected to the transport vehicle body via a magnetic attraction structure. The two belt conveyors are arranged in parallel and spaced a set distance apart. The wheels on both sides of the transport vehicle are located on the two belt conveyors respectively. Multiple anti-reverse limit blocks are spaced apart on the belt conveyors, and the transport vehicle is located between two anti-reverse limit blocks.

2. The automated backfilling device for model trench testing as described in claim 1, characterized in that, The belt conveyor includes a rising section, a horizontal section, and a descending section connected in sequence. The entire belt conveyor is supported by a conveyor support beam and a conveyor support rod. The bottom of the conveyor support beam is provided with support beam rollers.

3. The automated backfilling device for model trench testing as described in claim 2, characterized in that, The rising and falling portions are located on both sides of the model groove and are inclined, while the horizontal portion is located at the top of the model groove and is horizontal.

4. The automated backfilling device for model trench testing as described in claim 3, characterized in that, The model trench includes an upper trench and a lower trench, which are connected by bolts. The model trench is filled from bottom to top with a gravel layer, a sand layer, and a soft soil layer, and multiple rigid end-bearing piles are buried in the soft soil layer.

5. The automated backfilling device for model trench testing as described in claim 2, characterized in that, The bearing beam rollers are omnidirectional wheels, and the omnidirectional wheels are equipped with locking devices.

6. The automated backfilling device for model trench testing as described in claim 1, characterized in that, The magnetic attraction structure uses an electromagnet, which is fixed to the end of the movable base plate. The electromagnet is energized and de-energized by a control knob.

7. The automated backfilling device for model trench testing as described in claim 6, characterized in that, When the electromagnet is energized, it attracts the movable base plate; when the electromagnet is de-energized, it disconnects from the movable base plate.

8. The automated backfilling device for model trench testing as described in claim 1, characterized in that, The anti-reverse limiting block is a wedge-shaped block, with the inclined surface of the wedge-shaped block facing the front end of the transport vehicle and the flat surface of the wedge-shaped block facing the rear end of the transport vehicle.

9. The automated backfilling device for model trench testing as described in claim 1, characterized in that, The transport vehicle is equipped with two fixed base plates and one movable base plate at its bottom. The movable base plate is located between the two fixed base plates, and two wheels are installed on each of the two fixed base plates.

10. The automated backfilling device for model trench testing as described in claim 1, characterized in that, The interval between the two belt conveyors is greater than the width of the movable base plate.

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