Desktop simulation sand table for airfield pavement rush repair teaching

Abstract

The utility model discloses a desktop simulation sand table for airport pavement first-aid repair teaching, which comprises a sand table body and an airport repair equipment simulation group mounted at the top end of the sand table body, a rectangular hollow part is arranged on the other side of the top end of the sand table body, and right-angle supporting sheets are mounted at corners in the rectangular hollow part. The top ends of the four right-angle supporting sheets are provided with an underground tunnel surface structure box, two sides of the back surface of the underground tunnel surface structure box are provided with counter bores, and the back surface of the sand table body is fixedly provided with a hollow shell. According to the utility model, the tunnel pavement structure box is independent, so that students can deeply observe and analyze the internal condition of damage, and can more comprehensively understand the formation reason and degree of damage and the influence on the pavement by directly contacting and observing the damage structure, thereby improving the cognition depth of the students on the emergency repair condition of the airfield pavement.

Description

Technical Field

[0001] The utility model relates to the technical field of sand tables, in particular to a desktop simulation sand table for teaching airport pavement emergency repairs. Background Art

[0002] In order to restore the airport support capability as soon as possible, a complete airport emergency repair needs to go through the following stages: airport damage survey - program evaluation and decision-making - unexploded bomb removal - airport emergency repair implementation - emergency field support. In order to restore the real scene of airport damage and arouse the enthusiasm of trainees for practice, some desktop simulation sand tables have gradually appeared. This type of sand table structure includes a sand table base, model pavement and simulation elements. The model pavement is replaced by paper airport drawings, and the simulation elements are 3D printed models of personnel units, mechanical equipment, etc. Its design aims to cultivate trainees' practical operation ability and decision-making ability in emergency situations. However, in the current desktop simulation sand table, the damage module is generally prefabricated directly on the sand table base during use. It is difficult for trainees to observe and analyze the internal situation of the damage module, and they cannot deeply understand the internal situation of the tunnel pavement damage. This will limit their accurate understanding of the degree, type and impact of the damage, affect their analysis and judgment ability, and make it difficult to practice practical operation skills such as repairing cracks and filling potholes. Utility Model Content

[0003] The purpose of the utility model is to provide a desktop simulation sand table for teaching airport pavement emergency repair, which can separate the damaged pavement structure of the tunnel from the desktop simulation sand table, so that students can observe and analyze the internal situation of the damage, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a desktop simulation sand table for teaching airport pavement emergency repair, comprising a sand table body and an airport repair equipment simulation group installed on the top of the sand table body, a rectangular hollow portion is provided on the other side of the top of the sand table body, right-angled supporting pieces are installed at the corner positions inside the rectangular hollow portion, a tunnel pavement structure box is installed on the top of four right-angled supporting pieces, countersunk holes are installed on both sides of the back of the tunnel pavement structure box, a hollow shell is fixed on the back of the sand table body, and a circular shell extraction seat is installed at both ends of the hollow shell, a rotating shaft is rotatably installed inside the circular shell extraction seat, a knob for driving one of the rotating shafts to rotate is installed on one side of the bottom end of the hollow shell, a pulley transmission structure for power transmission is installed between the two rotating shafts, a rack pushing structure is provided inside the circular shell extraction seat on one side of the rotating shaft, and a locking pin that is plugged into the countersunk hole on the back of the tunnel pavement structure box is installed on the movable end of the rack pushing structure

[0005] Preferably, the bottom of the tunnel surface structure box is paved with a scattered material backfill layer, a base layer and a surface layer in sequence from top to bottom.

[0006] Preferably, a calibration hole is provided inside the right-angle support piece, and a docking column which is concentric with and plugged into the calibration hole is fixed to the bottom end of the tunnel surface structure box.

[0007] Preferably, the pulley transmission structure includes a synchronous wheel fixed to one end of the two rotating shaft surfaces, and a crawler belt for connecting the two synchronous wheels.

[0008] Preferably, the rack pushing structure includes a gear fixed to one end of the rotating shaft surface, and a rack slidably installed inside the circular shell seat, the rack and the gear are engaged with each other, and one end of the rack extends to the interior of the rectangular hollow portion and is fixedly connected to one end of the locking pin.

[0009] Preferably, the right-angle support piece is made of stainless steel.

[0010] Compared with the prior art, the beneficial effect of the present invention is that the desktop simulation sand table for teaching airport pavement emergency repairs separates the tunnel pavement structure box, allowing students to deeply observe and analyze the internal situation of the damage. By directly contacting and observing the damaged structure, students can more comprehensively understand the causes and extent of the damage and its impact on the pavement, thereby enhancing their depth and breadth of cognition of the airport pavement emergency repair situation. When students perform practical operations on the independent tunnel pavement structure box, they can more attentively practice various emergency repair skills, such as repairing cracks, filling potholes, etc. Through repeated practice, students can better master the operating skills. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 This is a side structural diagram of the present utility model;

[0013] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0014] Figure 4 For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0015] In the figure: 1. Sand table body; 2. Airport repair equipment simulation group; 3. Rectangular hollow part; 4. Right-angle support plate; 401. Calibration hole; 5. Tunnel surface structure box; 501. Scattered material backfill layer; 502. Base layer; 503. Surface layer; 6. Docking column; 7. Hollow shell; 8. Knob; 9. Ring-shaped shell seat; 10. Rotating shaft; 11. Pulley transmission structure; 12. Rack sliding structure; 13. Locking pin. DETAILED DESCRIPTION

[0016] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-4 The present invention provides an embodiment of a desktop simulation sand table for teaching airport pavement emergency repair, comprising a sand table body 1 and a simulation group 2 of airport repair equipment mounted on top of the sand table body 1. The simulation group 2 of airport repair equipment includes miniature models of equipment such as an excavator, a crusher, a transport vehicle, a loader, a flatbed trailer, a crane, a punch, a generator, an air compressor, a fastener, a grader, an integrated concrete mixer truck, a sliding belt mixing head, and a noodle maker.

[0018] A rectangular hollow portion 3 is provided on the other side of the top of the sandbox body 1. Right-angled supporting pieces 4 are installed at the corners inside the rectangular hollow portion 3. The tops of the four right-angled supporting pieces 4 are installed with a tunnel surface structure box 5. The bottom of the tunnel surface structure box 5 is filled with a scattered material backfill layer 501, a base layer 502, and a surface layer 503 in order from top to bottom.

[0019] The debris backfill layer 501 is made by directly backfilling the crater with small debris blown off from the periphery of the crater to shorten repair time. The base layer 502 is made of graded crushed stone, fast-setting flowable filler, solidified soil, geocell reinforced soil, expanded polyurethane foam, etc. The surface layer 503 is made of fiberglass reinforced plastic road panels, assembled metal road panels, rapid-hardening concrete panels, etc., to simulate the airport pavement repair tunnel.

[0020] Countersunk holes are installed on both sides of the back of the tunnel surface structure box 5. A hollow shell 7 is fixed to the back of the sand table body 1, and both ends of the hollow shell 7 are installed with a circular shell extraction seat 9. A rotating shaft 10 is rotatably installed inside the circular shell extraction seat 9. A knob 8 for driving one of the rotating shafts 10 to rotate is installed on one side of the bottom end of the hollow shell 7. A pulley transmission structure 11 for power transmission is installed between the two rotating shafts 10. A rack pushing structure 12 is provided inside the circular shell extraction seat 9 on one side of the rotating shaft 10. The movable end of the rack pushing structure 12 is installed with a locking pin 13 that is plugged into the countersunk hole on the back of the tunnel surface structure box 5;

[0021] When the staff manually turns the knob 8, the rotational power of the knob 8 is transmitted to the two rotating shafts 10 through the pulley transmission structure 11. At this time, the rotating shaft 10 drives the rack pushing structure 12 to move, so that the rack pushing structure 12 drives the locking pin 13 to withdraw to the countersunk hole on the back of the tunnel surface structure box 5, thereby releasing the connection restriction between the sand table body 1 and the tunnel surface structure box 5;

[0022] A calibration hole 401 is provided inside the right-angle support piece 4. A docking post 6 that is concentric with and plugged into the calibration hole 401 is fixed to the bottom end of the tunnel surface structure box 5. The right-angle support piece 4 is made of stainless steel. When the sand table body 1 and the tunnel surface structure box 5 are installed, the four docking posts 6 at the bottom end of the tunnel surface structure box 5 are inserted into the calibration hole 401. The calibration hole 401 and the docking posts 6 allow the right-angle support piece 4 and the tunnel surface structure box 5 to be stably docked. The right-angle support piece 4 stably supports the tunnel surface structure box 5, ensuring the installation stability of the tunnel surface structure box 5.

[0023] The pulley transmission structure 11 includes a synchronous wheel fixed to one end of the surface of the two rotating shafts 10, and a crawler belt for connecting the two synchronous wheels. The rack pushing structure 12 includes a gear fixed to one end of the surface of the rotating shaft 10, and a rack slidably mounted inside the circular shell seat 9. The rack and the gear are meshed with each other. One end of the rack extends to the interior of the rectangular hollow portion 3 and is fixedly connected to one end of the locking pin 13. After the tunnel surface structure box 5 is installed in the sand table body 1, one of the rotating shafts 10 is driven to rotate by the knob 8. The two rotating shafts 10 rotate synchronously and in the same direction under the drive of the pulley transmission structure 11, and the rotating shaft 10 drives the gear in the rack pushing structure 12 to rotate;

[0024] The gear drives the rack and the locking pin 13 to move until the locking pin 13 is fully inserted into the countersunk hole on the back of the tunnel surface structure box 5. The installation is fast and convenient, and it is easy for the staff to operate and use.

[0025] When the embodiment of the present application is in use, first, the tunnel surface structure box 5 is composed of a scattered material backfill layer 501, a base layer 502, and a surface layer 503. When the staff wants to take the tunnel surface structure box 5 out of the sand table body 1 for further detailed observation by the trainees, the staff manually turns the knob 8, and the rotational power of the knob 8 is transmitted to the two rotating shafts 10 through the pulley transmission structure 11. At this time, the rotating shaft 10 drives the rack pushing structure 12 to move, so that the rack pushing structure 12 drives the locking pin 13 to withdraw to the countersunk hole on the back of the tunnel surface structure box 5, thereby releasing the connection restriction between the sand table body 1 and the tunnel surface structure box 5, that is, the sand table body 1 and the tunnel surface structure box 5 are in an unlocked state, and the staff pulls up the tunnel surface structure box 5. The structure box 5 is separated from the sandbox body 1 so that the bottom end of the tunnel pavement structure box 5 is no longer in contact with the right-angle support piece 4 until the tunnel pavement structure box 5 is completely withdrawn from the sandbox body 1. At this time, the user can directly observe the structural layer in the tunnel pavement structure box 5. By separating the tunnel pavement structure box 5, the trainees can deeply observe and analyze the internal situation of the damage. By directly contacting and observing the damaged structure, the trainees can more comprehensively understand the cause and extent of the damage and its impact on the pavement, thereby enhancing their depth and breadth of understanding of the airport pavement repair situation. In addition, when the trainees perform practical operations on the independent tunnel pavement structure box 5, they can more attentively practice various repair skills, such as repairing cracks, filling potholes, etc. Through repeated practice, the trainees can better master the operating skills.

Claims

1. A desktop simulation sand table for teaching airport pavement repair, characterized by: The invention comprises a sand table body (1) and an airport repair equipment simulation group (2) installed on the top of the sand table body (1), wherein a rectangular hollow portion (3) is provided on the other side of the top of the sand table body (1), right-angled supporting pieces (4) are installed at the corner positions inside the rectangular hollow portion (3), and a tunnel surface structure box (5) is installed on the top of the four right-angled supporting pieces (4), and both sides of the back of the tunnel surface structure box (5) are installed with countersunk holes, and a hollow shell (7) is fixed on the back of the sand table body (1), and both ends of the inside of the hollow shell (7) are installed with circular drawers. A shell seat (9) is provided, wherein a rotating shaft (10) is rotatably installed inside the circular shell seat (9), a knob (8) for driving one of the rotating shafts (10) to rotate is installed on one side of the bottom end of the hollow shell (7), a pulley transmission structure (11) for power transmission is installed between the two rotating shafts (10), a rack pushing structure (12) is provided inside the circular shell seat (9) on one side of the rotating shaft (10), and a locking pin (13) is installed on the movable end of the rack pushing structure (12) and is plugged into the countersunk hole on the back side of the tunnel surface structure box (5).

2. The desktop simulation sand table for teaching airport pavement repair according to claim 1, characterized in that: The bottom of the tunnel surface structure box (5) is paved with a scattered material backfill layer (501), a base layer (502) and a surface layer (503) in sequence from top to bottom.

3. The desktop simulation sand table for teaching airport pavement repair according to claim 1, characterized in that: A calibration hole (401) is provided inside the right-angle support piece (4), and a docking column (6) which is concentric with and plugged into the calibration hole (401) is fixed at the bottom end of the tunnel surface structure box (5).

4. The desktop simulation sand table for teaching airport pavement repair according to claim 1, characterized in that: The pulley transmission structure (11) comprises a synchronous wheel fixed on one end of the surface of the two rotating shafts (10), and a crawler belt for connecting the two synchronous wheels.

5. The desktop simulation sand table for teaching airport pavement repair according to claim 1, characterized in that: The rack pushing structure (12) includes a gear fixed to one end of the surface of the rotating shaft (10) and a rack slidably mounted inside the circular shell seat (9), the rack and the gear meshing with each other, and one end of the rack extends to the inside of the rectangular hollow portion (3) and is fixedly connected to one end of the locking pin (13).

6. The desktop simulation sand table for teaching airport pavement repair according to claim 1, characterized in that: The right-angle supporting piece (4) is made of stainless steel.

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