Simulation test box for frozen soil environment of Qinghai-Tibet railway

Abstract

The utility model discloses a simulation test box for a frozen soil environment of a Qinghai-Tibet railway, which comprises a first side plate, the bottom of the first side plate is rotatably connected with a bottom plate, one side of the first side plate is rotatably connected with two second side plates. Belongs to the technical field of test boxes. According to the simulation test box for the frozen soil environment of the Qinghai-Tibet railway, firstly, a bottom plate is rotated and unfolded, then a fourth side plate, a second side plate and a third side plate are pulled and unfolded, clamping blocks on the bottom plate are inserted into clamping grooves in the fourth side plate, it is ensured that the clamping blocks and the clamping grooves are completely combined, and therefore the complete test box is formed, a test is facilitated, and after the test is finished, the test box is emptied; the pressing block is pressed, the pressing block drives the clamping block to be separated from the clamping groove through the pressing rod, at the moment, the bottom plate can be separated from the fourth side plate, then the bottom plate and the fourth side plate are reset, and the test box is simple in overall structure, foldable, capable of reducing the occupied space to a great extent and convenient to carry and move.

Description

Technical Field

[0001] The utility model relates to the technical field of test boxes, and more specifically to a simulation test box for a frozen soil environment of the Qinghai-Tibet Railway. Background Art

[0002] Railway transportation is a land transportation method that uses locomotives to pull train vehicles on two parallel rails. The traditional method is to use steel wheels, but railway transportation in a broad sense also includes non-steel wheel methods such as magnetic levitation trains, cable cars, and ropeways, or rail transportation. The rails can provide an extremely smooth and hard medium for the train wheels to roll on with minimal friction, making people on them feel more comfortable, and it can also save energy. If properly configured, railway transportation can save 50% to 70% of energy when carrying the same weight of objects compared to road transportation.

[0003] Frozen soil refers to various rocks and soils below zero degrees Celsius and containing ice. It can generally be divided into short-term frozen soil, seasonal frozen soil and perennial frozen soil. Frozen soil has rheological properties, and its long-term strength is much lower than the instantaneous strength characteristics. Due to these characteristics, the construction of engineering structures in frozen soil areas must face two major dangers: frost heave and thaw settlement. As the climate warms, frozen soil is constantly degrading.

[0004] When laying the Qinghai-Tibet Railway, the impact of frozen soil on the railway bed also needs to be considered, so a simulation test box is needed to simulate the situation when the railway bed is laid on frozen soil, so as to formulate corresponding solutions. Some existing simulation test boxes are just a simple box, and the box itself is an integrated structure. When not in use, it will take up a relatively large storage space, and it will also cause inconvenience to the staff's transportation work. Utility Model Content

[0005] The purpose of the utility model is to provide a simulation test box for the frozen soil environment of the Qinghai-Tibet Railway to solve the problems raised in the above background technology:

[0006] Some existing simulation test boxes are just a simple box body, and the box body itself is an integrated structure, which will take up a relatively large storage space when not in use, and also cause inconvenience to the staff's carrying work.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A simulation test box for a frozen soil environment of the Qinghai-Tibet Railway comprises a first side panel, the bottom of the first side panel is rotatably connected to a bottom panel, one side of the first side panel is rotatably connected to a second side panel, there are two second side panels in total, the two second side panels are symmetrically distributed, the outer side of the second side panel away from the first side panel is rotatably connected to a third side panel, a fourth side panel is rotatably connected between the two third side panels, the first side panel, the second side panel, the third side panel and the fourth side panel are of the same height, and the first side panel and the fourth side panel have the same width, the width of the second side panel and the third side panel is less than half of the width of the first side panel and the fourth side panel, so as to prevent the situation of being stuck during folding and avoid incomplete folding, a first groove is provided on a side of the upper surface of the bottom panel close to the fourth side panel, a clamping block is slidably connected to the inside of the first groove, a clamping slot is provided on the lower surface of the fourth side panel, the clamping slot is used in conjunction with the clamping block, the fourth side panel and the bottom panel are connected and fixed by the clamping block and the clamping slot, and when the clamping block is combined with the clamping slot, the two groups of the second side panel and the third side panel between the fourth side panel and the first side panel are also fully unfolded.

[0009] Preferably, a second groove is provided on one side of the base plate, a pressure block is slidably connected inside the second groove, a third groove is provided inside the base plate, the third groove is communicated with the first groove, a pressure rod is slidably connected inside the third groove, the pressure rod vertically penetrates the base plate and extends to the inside of the second groove, the pressure rod is slidably connected to the base plate, the pressure block is fixedly connected to the pressure rod, the position of the card block is controlled by the pressure block and the pressure rod, and when the card block is combined with the card slot, the fourth side plate and the base plate can be connected and fixed.

[0010] Preferably, a spring is sleeved on the outside of the pressure rod and located between the card block and the first groove. The spring provides elastic force to drive the card block to automatically reset. When the user presses the pressure block, the spring will be compressed by the card block. After the user releases his hand, the compressed spring will drive the card block to automatically reset.

[0011] Preferably, the cross-section of the first groove is a rectangular structure. The first groove with a rectangular cross-section can prevent the block from swinging back and forth, thereby limiting the moving direction of the block so that the block can only move back and forth in the first groove. The cross-sections of the second groove and the third groove are both circular structures.

[0012] Preferably, the outer wall of the card block fits with the inner wall of the first groove, and the card block and the first groove can fit tightly together, so that the card block will not twist or be misaligned when moving back and forth in the first groove, so that the card block can move back and forth smoothly in the first groove.

[0013] Preferably, the inside of the first side panel and the fourth side panel are fixedly connected with an observation window, and the outer side of the first side panel and the fourth side panel, and located above the observation window, are provided with a hand buckle groove, which is mainly for the user to facilitate the handling and movement of the test box.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1) When using the simulation test box for the frozen soil environment of the Qinghai-Tibet Railway, first rotate and unfold the bottom plate, then pull and unfold the fourth side plate, the second side plate and the third side plate, so that the card block on the bottom plate is inserted into the card slot in the fourth side plate, ensuring that the card block and the card slot are fully combined, thereby forming a complete test box for convenient testing. After the test, empty the test box, press the pressure block, and the pressure block drives the card block to separate from the card slot through the pressure rod. At this time, the bottom plate and the fourth side plate can be separated, and then the bottom plate and the fourth side plate can be reset. The overall structure of the test box is simple and foldable, which can greatly reduce the occupied space and facilitate handling and movement.

[0016] 2) When the Qinghai-Tibet Railway frozen soil environment simulation test box is in use, observation windows are installed on the first side panel and the fourth side panel for the staff to observe the internal situation. At the same time, hand buckle grooves are provided on the outer sides of the first side panel and the fourth side panel, and located above the observation windows. The hand buckle grooves are mainly for the convenience of users to carry and move the test box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model before being folded as a whole;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model after being folded as a whole;

[0019] Figure 3 It is a structural schematic diagram of the observation window of the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of the bottom plate of the utility model.

[0021] Explanation of the numbers in the figure: 1. first side plate; 2. bottom plate; 3. second side plate; 4. third side plate; 5. fourth side plate; 6. first groove; 7. clamping block; 8. clamping slot; 9. second groove; 10. pressing block; 11. third groove; 12. pressing rod; 13. spring; 14. observation window. DETAILED DESCRIPTION

[0022] Some existing simulation test boxes are just a simple box, and the box itself is an integrated structure, which will take up a relatively large storage space when not in use, and also cause inconvenience to the staff's handling work. The following solution is used to solve this problem.

[0023] See also Figures 1 to 4 A simulation test box for the frozen soil environment of the Qinghai-Tibet Railway comprises a first side panel 1, a bottom panel 2 is rotatably connected to the bottom of the first side panel 1, a second side panel 3 is rotatably connected to one side of the first side panel 1, there are two second side panels 3, the two second side panels 3 are symmetrically distributed, a third side panel 4 is rotatably connected to the outer side of the second side panel 3 away from the first side panel 1, a fourth side panel 5 is rotatably connected between the two third side panels 4, the first side panel 1, the second side panel 3, the third side panel 4 and the fourth side panel 5 have the same height, and the first side panel 1 and the fourth side panel 5 have the same width, and the width of the second side panel 3 and the third side panel 4 is less than The first side panel 1 and the fourth side panel 5 are generally wide to prevent jamming during folding and to avoid incomplete folding. A first groove 6 is provided on the upper surface of the bottom panel 2 close to the fourth side panel 5, and a clamping block 7 is slidably connected inside the first groove 6. A clamping slot 8 is provided on the lower surface of the fourth side panel 5. The clamping slot 8 is used in conjunction with the clamping block 7 to connect and fix the fourth side panel 5 to the bottom panel 2 through the clamping block 7 and the clamping slot 8. When the clamping block 7 is combined with the clamping slot 8, the two groups of second side panels 3 and third side panels 4 between the fourth side panel 5 and the first side panel 1 are also fully unfolded, thereby forming a complete test box.

[0024] A second groove 9 is provided on one side of the bottom plate 2, and a pressure block 10 is slidably connected inside the second groove 9. A third groove 11 is provided inside the bottom plate 2, and the third groove 11 is communicated with the first groove 6. A pressure rod 12 is slidably connected inside the third groove 11, and the pressure rod 12 vertically penetrates the bottom plate 2 and extends to the inside of the second groove 9. The pressure rod 12 is slidably connected to the bottom plate 2, and the pressure block 10 is fixedly connected to the pressure rod 12. The position of the card block 7 is controlled by the pressure block 10 and the pressure rod 12. When the card block 7 is combined with the card slot 8, the fourth side plate 5 and the bottom plate 2 can be connected and fixed. When the card block 7 is separated from the card slot 8, the user can release the connection between the fourth side plate 5 and the bottom plate 2.

[0025] A spring 13 is sleeved on the outside of the pressure rod 12 and located between the card block 7 and the first groove 6. The spring 13 provides elastic force to drive the card block 7 to automatically reset. When the user presses the pressure block 10, the pressure rod 12 will drive the card block 7 to separate from the card slot 8. At the same time, the card block 7 compresses the spring 13. After the user releases his hand, the compressed spring 13 drives the card block 7 to automatically reset.

[0026] The cross section of the first groove 6 is a rectangular structure. The first groove 6 with a rectangular cross section can prevent the block 7 from swinging back and forth, thereby limiting the moving direction of the block 7 so that the block 7 can only move back and forth in the first groove 6. The cross sections of the second groove 9 and the third groove 11 are both circular structures.

[0027] The outer wall of the block 7 fits with the inner wall of the first groove 6, and the block 7 and the first groove 6 can fit tightly together, so that the block 7 will not twist or be dislocated when moving back and forth in the first groove 6, ensuring the stability of the block 7 when moving back and forth in the first groove 6.

[0028] The first side panel 1 and the fourth side panel 5 are both fixedly connected with an observation window 14, and the outer sides of the first side panel 1 and the fourth side panel 5 and above the observation window 14 are provided with a hand buckle groove for facilitating the user to carry and move the unfolded test box.

[0029] The use steps of the utility model are as follows: when the simulation test box of the frozen soil environment of the Qinghai-Tibet Railway is used, the bottom plate 2 on one side of the first side plate 1 is first rotated so that the bottom plate 2 is rotated to a state nearly perpendicular to the first side plate 1, and then the fourth side plate 5 is pulled away from the first side plate 1. During the process, the fourth side plate 5 will drive the second side plate 3 and the third side plate 4 to rotate and unfold, until the second side plate 3 and the third side plate 4, which were originally parallel to each other, are rotated and unfolded to a state where the two are in the same plane, and finally the bottom plate 2 is rotated so that the block 7 on the bottom plate 2 is inserted into the slot 8 in the fourth side plate 5 to ensure that the bottom plate 2 is in the same plane. The card block 7 is fully combined with the card slot 8 to form a complete test box. The user can fill the test box with frozen soil, then put in the railway bed model, and view the situation of the railway bed in the frozen soil through the observation window 14. After the test, the test box is emptied and the pressure block 10 is pressed. The pressure block 10 drives the card block 7 to separate from the card slot 8 through the pressure rod 12. At this time, the bottom plate 2 and the fourth side plate 5 can be separated, and then the bottom plate 2 and the fourth side plate 5 can be reset. The overall structure of the test box is simple and foldable, which can greatly reduce the occupied space and facilitate handling and movement.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A Qinghai-Tibet Railway frozen soil environment simulation test box, comprising a first side plate (1), characterized in that: The bottom of the first side plate (1) is rotatably connected to the bottom plate (2), one side of the first side plate (1) is rotatably connected to the second side plate (3), there are two second side plates (3), the two second side plates (3) are symmetrically distributed, the outer side of the second side plate (3) away from the first side plate (1) is rotatably connected to the third side plate (4), the two third side plates (4) are rotatably connected to the fourth side plate (5), the upper surface of the bottom plate (2) is provided with a first groove (6) on the side close to the fourth side plate (5), the interior of the first groove (6) is slidably connected to a clamping block (7), the lower surface of the fourth side plate (5) is provided with a clamping groove (8), the clamping groove (8) is used in conjunction with the clamping block (7).

2. The Qinghai-Tibet Railway frozen soil environment simulation test box according to claim 1, characterized in that: A second groove (9) is provided on one side of the base plate (2), a pressure block (10) is slidably connected inside the second groove (9), a third groove (11) is provided inside the base plate (2), the third groove (11) is communicated with the first groove (6), a pressure rod (12) is slidably connected inside the third groove (11), the pressure rod (12) vertically penetrates the base plate (2) and extends to the inside of the second groove (9), the pressure rod (12) is slidably connected to the base plate (2), and the pressure block (10) is fixedly connected to the pressure rod (12).

3. A simulation test box for the frozen soil environment of the Qinghai-Tibet Railway according to claim 2, characterized in that: A spring (13) is sleeved outside the pressure rod (12) and between the clamping block (7) and the first groove (6).

4. The Qinghai-Tibet Railway frozen soil environment simulation test box according to claim 2, characterized in that: The cross section of the first groove (6) is a rectangular structure, and the cross sections of the second groove (9) and the third groove (11) are both circular structures.

5. The Qinghai-Tibet Railway frozen soil environment simulation test box according to claim 1, characterized in that: The outer side wall of the clamping block (7) is in contact with the inner side wall of the first groove (6).

6. The Qinghai-Tibet Railway frozen soil environment simulation test box according to claim 1, characterized in that: The first side plate (1) and the fourth side plate (5) are both fixedly connected with observation windows (14) inside.

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