A lightweight engineering plastic track

Abstract

The present invention discloses a lightweight engineering plastic track, belonging to the technical field of tracks, and includes a track body, wherein the track body is erected above a sleeper, and a gusset plate is fixedly installed on the sleeper by fixing bolts, and the gusset plate limits and fixes the track body; further includes: a lifting plate, which is fitted on the side wall of the track body, an elastic component is connected between the lifting plate and the track body, and a movable plate is rotatably installed on the lower surface of the lifting plate to improve the stability of the track body during transportation; a gas delivery component, which is arranged between the track body and the movable plate, and the gas delivery component is driven to automatically deliver gas during the rotation of the movable plate; a vertical plate, which is fixedly installed on the upper surface of the lifting plate, and the vertical plate is provided with an exhaust component. The lightweight engineering plastic track can be laid quickly and stably, and the track can be locked and automatically cleaned when a mine car passes by, which effectively improves the stability of the track in use.

Description

Technical Field

[0001] The invention relates to the technical field of plastic tracks, in particular to a lightweight engineering plastic track. Background Art

[0002] Coal mine cars are an important type of railway vehicle in coal mines, mainly used to transport workers, coal, gangue, materials, etc. above and below the mine. Traditional mine car tracks / wheels are made of steel, which are heavy and inconvenient to install and maintain underground.

[0003] In the prior art, there is a track structure with publication number CN112962362B, which includes a bar rail extending in a predetermined straight direction, a T-shaped bracket extending in the predetermined straight direction and having an inverted T-shaped cross section, and a protective cover; the inverted T-shaped bracket includes a bar base extending in the predetermined straight direction and a bar support seat extending in the predetermined straight direction; the bar rail is supported on the bar base through the bar support seat; the protective cover is wrapped around the outer surface of the bar base, the outer surface of the bar support seat, and the outer surface of the bottom of the bar rail; the edges of the bar base are respectively provided with a first recessed portion and a second recessed portion, and the first recessed portion and the second recessed portion are respectively located on opposite sides of the bar support seat. When installing the gauge block, the installation position of the gauge block on the track structure is determined, the gauge block is easily installed, the installation error of the gauge block is reduced, and the construction quality is ensured;

[0004] Another example is the underground track with publication number CN110904742B, which includes sleepers and rails; the sleepers include an outer frame and an inner sleeper; the outer frame includes two fixed seats and a plurality of first connecting rods; the fixed seat is rectangular and cylindrical with open ends at both horizontal ends, the fixed seat is a reinforced concrete structure, two second connecting rods are vertically arranged in the fixed seat, connecting seats for installing rails are integrally formed on both sides of the upper end of the fixed seat, a downwardly recessed groove is provided in the middle of the connecting seat, the two ends of the first connecting rod are respectively connected to the inner ends of the two fixed seats, and the first connecting rod and the second connecting rod are both steel structures; a plurality of connecting holes are vertically arranged at both ends of the inner sleeper, the middle part of the inner sleeper protrudes downward, the upper part of the rail is I-shaped, and a protrusion matching the groove is integrally formed at the lower part of the rail, and the protrusion is inserted into the groove. The problem of track loosening and falling off is solved;

[0005] Another example is a mine transportation track anti-deviation mechanism with publication number CN112431075B. During mine transportation work, the limit pressure blocks, connecting threaded columns and locking cylinders provided in the present invention are symmetrically arranged on both sides of the track, and then fixed by connecting the connecting threaded columns and the locking cylinders, so that the limit pressure blocks have a good limiting effect on the track. Thereafter, the locking card slot and the second movable card block are locked and connected, so that the connection between the connecting threaded column and the locking cylinder will not loosen during long-term transportation work, and the limit clamping mechanism provided can lock the connection between the second movable card block and the locking card slot, further strengthening the anti-deviation limit of the track, thereby ensuring the normal progress of mine transportation work and avoiding the occurrence of safety accidents.

[0006] The existing mine tracks are inconvenient to clean the coal slag and particles that fall above the tracks when in use, which increases the wear of the tracks during the travel of the mine car. At the same time, the single bolt fixing method is adopted, which makes the bolts easy to loosen under the influence of the vibration generated by the travel of the mine car, thereby reducing the installation stability of the tracks and having certain usage defects. Summary of the invention

[0007] The purpose of the present invention is to provide a lightweight engineering plastic track to solve the problem raised by the above-mentioned background technology that the mine tracks on the market today are inconvenient to clean the coal slag and particles that have fallen above the tracks when in use, which increases the wear of the tracks during the travel of the mine cars. At the same time, a single bolt fixing method is adopted, which makes the bolts easily loosened under the influence of the vibration generated by the travel of the mine cars, thereby reducing the installation stability of the tracks.

[0008] To achieve the above object, the present invention provides the following technical solution: a lightweight engineering plastic track, comprising a lightweight track body made of flame-retardant and antistatic PPE material, the track body is mounted above the sleeper, and a gusset plate is fixedly installed on the sleeper by fixing bolts, and the gusset plate limits and fixes the track body;

[0009] It also includes: a lifting plate, which is fitted on the side wall of the track body, an elastic component is connected between the lifting plate and the track body, and a movable plate is rotatably installed on the lower surface of the lifting plate to improve the stability of the track body during transportation;

[0010] A gas delivery component is arranged between the track body and the movable plate, and the movable plate drives the gas delivery component to automatically deliver gas during the rotation of the movable plate;

[0011] The vertical plate is fixedly mounted on the upper surface of the lifting plate, and the vertical plate is provided with an exhaust assembly for realizing automatic cleaning and cooling of the surface of the track body.

[0012] Preferably, opposite assembly grooves are provided at both ends of the track body, and the assembly grooves at the head and tail parts of the two adjacent track bodies match each other, and a positioning hole is provided in the left assembly groove, and a positioning piece is fixedly arranged in the right assembly groove, and the positioning pieces of the two adjacent track bodies are inserted into the positioning holes to achieve positioning.

[0013] By adopting the above technical solution, when the track is erected, when the head and tail parts of the adjacent track bodies are brought horizontally close together, the assembly grooves of the two track bodies can be matched, and at the same time, the positioning pieces can be inserted and snapped into the positioning holes to achieve preliminary locking of the adjacent track bodies, thereby improving the subsequent assembly accuracy.

[0014] Preferably, the buckle plate is symmetrically arranged about the track body, and the buckle plate is arranged in a Z-shaped structure, and one end of the buckle plate close to the track body is pressed onto the upper surface of the lower end of the track body. At the same time, a gasket is provided between the fixing bolt and the buckle plate to ensure that one side of the nut faces the side of the track body after the fixing bolt is tightened.

[0015] By adopting the above technical solution, when the gusset plate is fixed, the position angle of the nut after the bolt is tightened can be adjusted by changing the thickness of the gasket, which facilitates the subsequent secondary locking of the nut.

[0016] Preferably, the side wall of the lifting plate is in contact with the side wall of the track body, and a downwardly bent portion is provided at the left end of the lifting plate, and the lifting plate forms an elastic lifting structure through the elastic component and the track body.

[0017] By adopting the above technical solution, when the mine car wheel passes over the track body, the wheel rim on the wheel will roll along the bent portion of the lifting plate, thereby squeezing the lifting plate, so that the lifting plate as a whole automatically performs elastic lifting.

[0018] Preferably, the elastic component includes a lifting rod fixedly mounted on the lower surface of the lifting plate and a guide cylinder fixedly mounted on the track body, and the lifting rod and the guide cylinder are socketed to form a lifting structure, and a spring is connected between the upper end of the guide cylinder and the lifting plate.

[0019] By adopting the above technical solution, the lifting plate can be elastically lifted and lowered under the action of the mine wheel rim.

[0020] Preferably, the movable plate is elastically rotatably connected to the lower part of the lifting plate, and the movable plate is initially arranged in an inclined state, and the movable plate can guide the fallen coal cinders.

[0021] By adopting the above technical solution, when the coal slag falls, the movable plate can block and guide the falling coal slag to be discharged, thereby effectively preventing the coal slag from falling between the track body and the lifting plate and avoiding affecting the normal downward movement of the lifting plate.

[0022] Preferably, a locking pin is fixedly provided on the lower surface of one end of the lifting plate close to the positioning hole, and a locking hole is opened on the positioning piece, and the locking pin is inserted into the locking hole after being moved downward to lock the positioning piece.

[0023] By adopting the above technical solution, when the mine car passes through the track body, the lifting plate will automatically move down to insert the locking pin into the locking hole, thereby realizing secondary locking of the positioning piece, thereby preventing the adjacent track bodies from loosening due to the vibration of the mine car operation.

[0024] Preferably, the lower end of the movable plate is fitted against the surface of the buckle plate, and the movable plate rotates as the lifting plate moves downward, and the lower end of the movable plate slides and fits against the side of the nut of the fixing bolt to lock the fixing bolt.

[0025] By adopting the above technical solution, when the mine car passes through the track body, it causes the lifting plate to move down and drives the movable plate to rotate synchronously. At this time, the lower end of the movable plate will fit into and contact the side of the nut of the fixing bolt, thereby achieving secondary limiting of the fixing bolt and preventing it from rotating loose.

[0026] Preferably, the air delivery component is an airbag, and the airbag is made of wear-resistant rubber material, and the airbag is fixedly bonded between the lifting plate and the movable plate, and the movable plate cooperates with the lifting plate to squeeze the airbag during rotation.

[0027] By adopting the above technical solution, when the movable plate rotates and resets, it can cooperate with the lifting plate to squeeze and stretch the airbag, thereby driving the airbag to transport gas.

[0028] Preferably, the exhaust assembly includes an air cavity opened inside the upper end of the vertical plate, and an air pipe is connected between the air cavity and the air bag, and exhaust holes are evenly opened on the side of the vertical plate facing the track body, and the exhaust holes are connected to the air cavity.

[0029] By adopting the above technical solution, when the airbag is pressurized, the gas inside it can be transported to the air cavity through the air pipe and evenly sprayed out through the exhaust hole, thereby blowing off the coal slag remaining on the surface of the track body. When the airbag is reset, air can be inhaled through the exhaust hole to accelerate the air flow near the track body, thereby cooling the track body and reducing friction and wear.

[0030] Preferably, the flame retardant and antistatic PPE material components of the track body include 50-55 parts of PPE, 30-35 parts of HIPS, 6-8 parts of flame retardant, 5-15 parts of antistatic agent, 0.3-0.5 parts of lubricant, and 0.2-0.5 parts of antioxidant. The flame retardant is one or more of BDP, RDP, and PX220; the antistatic agent is one or more of conductive carbon black, carbon nanotubes, carbon fiber, and graphene; the lubricant is one or more of silicone, PETS, and zinc stearate; and the antioxidant is one or more of 168, 1098, 1010, and 1076.

[0031] Compared with the prior art, the beneficial effects of the present invention are: the lightweight engineering plastic track can be laid quickly and stably, and the track can be locked and automatically cleaned when the mine car passes by, which effectively improves the stability of the track. The specific contents are as follows;

[0032] 1. A track body, a positioning piece, a positioning hole, a lifting plate and a locking pin are provided. When the track needs to be laid, the head and tail of the adjacent track bodies are horizontally close to each other, so that the assembly grooves on the adjacent track bodies can be matched, and the positioning pieces and positioning holes on the two track bodies are clamped together. When the mine car is running, the lifting plate will be pressed down, so that the locking pin on the lifting plate is automatically inserted into the locking hole on the positioning piece, thereby realizing the secondary locking of the track body and improving the laying and connection stability of the track;

[0033] 2. A lifting plate and a movable plate are provided. As the lifting plate moves downward, it will drive the upper end of the movable plate to move downward synchronously, so that the movable plate rotates elastically. At the same time, the lower end of the movable plate will slide against the upper surface of the buckle plate, so that the lower end of the movable plate will fit against the nut side wall of the fixing bolt, thereby realizing secondary locking of the fixing bolt, preventing the fixing bolt from rotating and loosening under the vibration generated by the running of the mine car, thereby effectively improving the installation stability of the track body. At the same time, the lifting plate can cooperate with the movable plate to strengthen the support of the track body when the mine car passes by, thereby ensuring the stability of the track body;

[0034] 3. A lifting plate, an air bag and an exhaust hole are provided. When the front wheel of the mine car contacts the downward lifting plate, the movable plate will rotate and squeeze the air bag, so that the air bag transmits the air inside to the air cavity through the air pipe, and then blows to the surface of the track body through the evenly arranged exhaust holes, so that the coal dust falling on the track body is automatically blown off and cleaned, thereby reducing the wear of the track body. When the mine car leaves, the movable plate will rotate and reset, thereby stretching the air bag, so that the air bag inhales air again through the exhaust hole, thereby promoting the flow of air near the track body and achieving cooling of the track body surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1It is a schematic diagram of the track body connection structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the split structure of the track body of the present invention;

[0037] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0038] Figure 4 This is a schematic diagram of the main structure of the track body of the present invention;

[0039] Figure 5 It is a schematic diagram of the side structure of the track body of the present invention;

[0040] Figure 6 It is a schematic diagram of the cross-sectional structure of the track body of the present invention;

[0041] Figure 7 It is a schematic diagram of the split structure of the present invention;

[0042] Figure 8 It is a schematic diagram of the connection structure of the lifting plate and the movable plate of the present invention.

[0043] In the figure: 1, track body; 101, positioning piece; 102, positioning hole; 103, locking hole; 2, sleeper; 3, fixing bolt; 4, buckle plate; 5, gasket; 6, lifting plate; 601, locking pin; 7, lifting rod; 8, guide cylinder; 9, spring; 10, movable plate; 11, air bag; 12, vertical plate; 13, air cavity; 14, air pipe; 15, exhaust hole. DETAILED DESCRIPTION

[0044] Example 1: Please refer to Figure 1-Figure 6 As shown, when the existing track is laid, adjacent tracks are only fixedly connected by bolts, so that the vibration generated when the mine car passes by can easily cause the bolts to loosen and affect the installation stability of the track. In order to solve this technical problem, this embodiment discloses the following technical content: a lightweight engineering plastic track, including a track body 1 made of flame-retardant and antistatic PPE material, the track body 1 is erected above the sleeper 2, and a gusset plate 4 is fixedly installed on the sleeper 2 by fixing bolts 3, and the gusset plate 4 limits and fixes the track body 1;

[0045] It also includes: a lifting plate 6, which is fitted on the side wall of the track body 1, an elastic component is connected between the lifting plate 6 and the track body 1, and a movable plate 10 is rotatably installed on the lower surface of the lifting plate 6 to improve the stability of the track body 1 during transportation;

[0046] The two ends of the track body 1 are respectively provided with assembly grooves in opposite directions, and the assembly grooves at the head and tail parts of the two adjacent track bodies 1 are matched, and a positioning hole 102 is provided in the assembly groove on the left side, and a positioning piece 101 is fixedly arranged in the assembly groove on the right side, and the positioning pieces 101 of the two adjacent track bodies 1 are inserted into the positioning hole 102 to achieve positioning.

[0047] The gusset plate 4 is symmetrically arranged with respect to the track body 1, and the gusset plate 4 is arranged in a Z-shaped structure, and one end of the gusset plate 4 close to the track body 1 is pressed on the upper surface of the lower end of the track body 1, and a gasket 5 is arranged between the fixing bolt 3 and the gusset plate 4 to ensure that the nut side faces the side of the track body 1 after the fixing bolt 3 is tightened. The side wall of the lifting plate 6 is fitted to the side wall of the track body 1, and the left end of the lifting plate 6 is provided with a bent portion bent downward, and the lifting plate 6 forms an elastic lifting structure with the track body 1 through an elastic component.

[0048] The elastic component includes a lifting rod 7 fixedly mounted on the lower surface of the lifting plate 6 and a guide cylinder 8 fixedly mounted on the track body 1, and the lifting rod 7 and the guide cylinder 8 are connected to form a lifting structure, and a spring 9 is connected between the upper end of the guide cylinder 8 and the lifting plate 6. The movable plate 10 is elastically rotatably connected to the bottom of the lifting plate 6, and the movable plate 10 is initially set in an inclined state, and the movable plate 10 can guide the falling coal slag. A locking pin 601 is fixedly set on the lower surface of one end of the lifting plate 6 close to the positioning hole 102, and a locking hole 103 is opened on the positioning member 101, and the locking pin 601 is inserted into the locking hole 103 after moving down to lock the positioning member 101.

[0049] The lower end of the movable plate 10 is attached to the surface of the buckle plate 4, and the movable plate 10 rotates as the lifting plate 6 moves downward, and the lower end of the movable plate 10 slides and fits against the side of the nut of the fixing bolt 3 to lock the fixing bolt 3. The flame retardant and antistatic PPE material components of the track body include 50-55 parts of PPE, 30-35 parts of HIPS, 6-8 parts of flame retardant, 5-15 parts of antistatic agent, 0.3-0.5 parts of lubricant, and 0.2-0.5 parts of antioxidant. The flame retardant is one or more of BDP, RDP, and PX220, the antistatic agent is one or more of conductive carbon black, carbon nanotubes, carbon fiber, and graphene, the lubricant is one or more of silicone, PETS, and zinc stearate, and the antioxidant is one or more of 168, 1098, 1010, and 1076.

[0050] Through the above technical scheme, the sleeper 2 is laid on the ground of the mine, and then the track body 1 is erected above the sleeper 2. Then, the buckle plate 4 is fixedly installed on the sleeper 2 by the fixing bolt 3, and the lower end of the track body 1 is clamped and fixed. When the fixing bolt 3 is installed, a gasket 5 is arranged between it and the buckle plate 4 to ensure that one side of the nut faces the track body 1 after the fixing bolt 3 is locked. Then, another track body 1 is horizontally approached to the installed track body 1, so that the head and tail assembly grooves of the two adjacent track bodies 1 are matched, so that the positioning piece 101 on the track body 1 installed first can be inserted into the positioning hole 102 of the track body 1 installed later, and then the track body 1 is locked by the buckle plate 4. When the mine car passes through the track body 1, its wheel rim will contact and press down the lifting plate 6, so that the lifting plate 6 can pass through the lifting The lowering rod 7, the guide cylinder 8 and the spring 9 move downward elastically, and during the downward movement of the lifting plate 6, the locking pin 601 on its lower surface is automatically inserted into the locking hole 103 on the positioning member 101, thereby further locking the track body 1 to prevent the adjacent track bodies 1 from being loosened when the mine car passes by. At the same time, as the lifting plate 6 moves downward, it will drive the movable plate 10 to rotate, so that the lower end of the movable plate 10 slides on the surface of the buckle plate 4, so that the lower end of the movable plate 10 can contact the side of the nut of the fixing bolt 3, thereby limiting the fixing bolt 3, preventing the fixing bolt 3 from rotating and causing the buckle plate 4 to loosen, further improving the stability of the track body 1 when the mine car passes by, and at the same time, when the movable plate 10 rotates and unfolds, it can cooperate with the lifting plate 6 to strengthen the support of the track body 1;

[0051] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. The existing track is inconvenient to clean the coal dust dropped on the track before the mine car passes, which makes the track body 1 prone to rapid wear. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 6-Figure 8 As shown, the gas delivery component is arranged between the track body 1 and the movable plate 10, and the gas delivery component is driven to automatically deliver gas during the rotation of the movable plate 10; the vertical plate 12 is fixedly installed on the upper surface of the lifting plate 6, and the vertical plate 12 is provided with an exhaust component to realize automatic cleaning and cooling of the surface of the track body 1; the gas delivery component is an airbag 11, and the airbag 11 is made of wear-resistant rubber material, and the airbag 11 is fixedly bonded between the lifting plate 6 and the movable plate 10, and the movable plate 10 cooperates with the lifting plate 6 to squeeze the airbag 11 during the rotation of the movable plate 10.

[0052] The exhaust assembly includes an air cavity 13 opened inside the upper end of the vertical plate 12, and an air pipe 14 is connected between the air cavity 13 and the airbag 11, and exhaust holes 15 are evenly opened on the side of the vertical plate 12 facing the track body 1, and the exhaust holes 15 are connected to the air cavity 13.

[0053] When the lifting plate 6 moves downward under the action of the wheels, the lifting plate 6 will drive the movable plate 10 to rotate, so that the movable plate 10 can cooperate with the lifting plate 6 to squeeze the airbag 11, so that the air in the airbag 11 enters the air cavity 13 through the air pipe 14 and is ejected through the evenly arranged exhaust holes 15, thereby automatically blowing off and cleaning the coal dust on the track body 1, thereby avoiding rapid wear of the track body 1 when the mine car passes by. When the mine car leaves, the lifting plate 6 will move up and reset under the elastic force of the spring 9. At this time, the movable plate 10 will elastically rotate and reset, thereby stretching the airbag 11, so that the airbag 11 can draw air near the track body 1 through the exhaust holes 15, thereby accelerating the effective flow of air near the track body 1, and achieving cooling of the surface of the track body 1.

Claims

1. A lightweight engineering plastic track, comprising a lightweight track body (1) made of flame-retardant and antistatic PPE material, wherein the track body (1) is mounted above a sleeper (2), and a gusset plate (4) is fixedly mounted on the sleeper (2) by means of fixing bolts (3), and the gusset plate (4) limits and fixes the track body (1); It is characterized in that Also includes: A lifting plate (6) is arranged on the side wall of the track body (1), an elastic component is connected between the lifting plate (6) and the track body (1), a movable plate (10) is rotatably installed on the lower surface of the lifting plate (6), and is used to improve the stability of the track body (1) during transportation, and opposite assembly grooves are respectively provided at both ends of the track body (1), and the assembly grooves at the head and tail of two adjacent track bodies (1) are matched, and a positioning hole (102) is provided in the left assembly groove, and a positioning piece (101) is fixedly provided in the right assembly groove, and the positioning pieces (101) of the two adjacent track bodies (1) are plugged into the fixed holes. The lifting plate (6) is positioned in the positioning hole (102), a locking pin (601) is fixedly arranged on the lower surface of one end of the lifting plate (6) close to the positioning hole (102), and a locking hole (103) is opened on the positioning piece (101), and the locking pin (601) is inserted into the locking hole (103) after moving downward to lock the positioning piece (101), the lower end of the movable plate (10) is attached to the surface of the buckle plate (4), and the movable plate (10) rotates as the lifting plate (6) moves downward, and the lower end of the movable plate (10) is slid and attached to the side of the nut of the fixing bolt (3) to lock the fixing bolt (3); A gas delivery component is arranged between the track body (1) and the movable plate (10), and the movable plate (10) drives the gas delivery component to automatically deliver gas during its rotation; The vertical plate (12) is fixedly mounted on the upper surface of the lifting plate (6), and the vertical plate (12) is provided with an exhaust assembly for realizing automatic cleaning and cooling of the surface of the track body (1).

2. A lightweight engineering plastic track according to claim 1, characterized in that: The buckle plate (4) is symmetrically arranged with respect to the track body (1), and the buckle plate (4) is arranged in a Z-shaped structure, and one end of the buckle plate (4) close to the track body (1) is pressed onto the upper surface of the lower end of the track body (1), and a gasket (5) is arranged between the fixing bolt (3) and the buckle plate (4) to ensure that one side of the nut faces the side of the track body (1) after the fixing bolt (3) is tightened.

3. The lightweight engineering plastic track according to claim 1, characterized in that: The side wall of the lifting plate (6) is in contact with the side wall of the track body (1), and a downwardly bent portion is provided at the left end of the lifting plate (6), and the lifting plate (6) forms an elastic lifting structure through an elastic component and the track body (1).

4. The lightweight engineering plastic track according to claim 1, characterized in that: The elastic component comprises a lifting rod (7) fixedly mounted on the lower surface of the lifting plate (6) and a guide cylinder (8) fixedly mounted on the track body (1), and the lifting rod (7) and the guide cylinder (8) are sleeved together to form a lifting structure, and a spring (9) is connected between the upper end of the guide cylinder (8) and the lifting plate (6).

5. The lightweight engineering plastic track according to claim 1, characterized in that: The movable plate (10) is elastically rotatably connected to the lower part of the lifting plate (6), and the movable plate (10) is initially arranged in an inclined state, and the movable plate (10) can guide the fallen coal slag.

6. The lightweight engineering plastic track according to claim 1, characterized in that: The air delivery component is an airbag (11), and the airbag (11) is made of wear-resistant rubber material, and the airbag (11) is fixedly bonded between the lifting plate (6) and the movable plate (10), and the movable plate (10) cooperates with the lifting plate (6) to squeeze the airbag (11) during rotation. The exhaust component includes an air cavity (13) opened inside the upper end of the vertical plate (12), and an air delivery pipe (14) is connected between the air cavity (13) and the airbag (11), and exhaust holes (15) are evenly opened on one side of the vertical plate (12) facing the track body (1), and the exhaust holes (15) and the air cavity (13) are connected.

7. The lightweight engineering plastic track according to claim 1, characterized in that: The flame retardant and antistatic PPE material components of the track body (1) include 50-55 parts of PPE, 30-35 parts of HIPS, 6-8 parts of flame retardant, 5-15 parts of antistatic agent, 0.3-0.5 parts of lubricant, and 0.2-0.5 parts of antioxidant, wherein the flame retardant is one or more of BDP, RDP, and PX220, the antistatic agent is one or more of conductive carbon black, carbon nanotubes, carbon fiber, and graphene, the lubricant is one or more of silicone, PETS, and zinc stearate, and the antioxidant is one or more of 168, 1098, 1010, and 1076.

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