Central inflation and deflation replacement detection device

Abstract

The utility model relates to the technical field of armored car central inflation and deflation devices, in particular to a central inflation and deflation substitution detection device which comprises a vehicle chassis, hubs and vehicle tires, the hubs are rotationally connected to the two sides of the lower portion of the vehicle chassis, the vehicle tires are fixedly installed on the outer sides of the hubs, and the vehicle tires are connected with the hubs. The inner side of the vehicle chassis is provided with a plurality of replacement central inflation and deflation detection devices, and each replacement central inflation and deflation detection device comprises a sliding sleeve, a distance sensor and a lower sliding rod. According to the central inflation and deflation replacement detection device, when the falling length of a lower sliding rod changes, the distance length recognized by a moving column on a distance sensor also changes differently, so that a vehicle driver can detect inflation and deflation of the center of a tire according to the length change recognized by the distance sensor; the central inflation and deflation detection function can be temporarily replaced, so that the using effect of the central inflation and deflation replacement detection device is better.

Description

Technical Field

[0001] The utility model relates to the technical field of central air-charging and air-discharging devices for armored vehicles, in particular to a central air-charging and air-discharging replacement detection device. Background Art

[0002] The central tire inflation and deflation system is a system that can adjust the tire pressure according to the road conditions while the car is driving. When the car enters the desert, mud, snow, tidal flats and other special ground from the paved road, the tire pressure can be quickly adjusted through the system to increase the contact area between the tire and the ground, increase the friction and prevent the driving wheel from slipping, thereby improving the car's passability.

[0003] For example, the authorization announcement number "CN207549877U" is named as a new type of central tire inflation and deflation device. Although a throttle valve is provided at the exhaust port of the three-way solenoid valve, back pressure will be generated in the pipeline to overcome the spring force in the diaphragm wheel side valve and continuously realize the deflation of the tire. However, the existing new type of central tire inflation and deflation device is used on large vehicles to detect and control the central inflation and deflation of the tire. However, the new type of central tire inflation and deflation device detects the inflation and deflation of the tire through a circuit to identify the pressure value of the vehicle tire, and then reflects it above the car dashboard. In actual driving, the vehicle may encounter a relatively rugged and difficult driving section. At this time, the central tire inflation and deflation control device is very easy to be damaged. At this time, the change of tire pressure cannot be detected in time and accurately, and the normal startup and operation of the central inflation and deflation device cannot be controlled, resulting in poor use effect of the new type of central tire inflation and deflation device.

[0004] At the same time, the existing new central inflation and deflation device for tires is installed on small cars or off-road vehicles to detect tire inflation and deflation. For some large military armored vehicles and large military vehicles, the ground on which the tires need to travel is more complex and diverse, and the circuit of the new central inflation and deflation controller for tires installed on large armored vehicles is very susceptible to damage by external factors. This causes the controller of the new central inflation and deflation device to be damaged more frequently and to be replaced more frequently, which greatly affects the service life of the new central inflation and deflation device for tires. Utility Model Content

[0005] The utility model aims to solve the problems of poor use effect and short service life of a new central inflation and deflation device for tires, and proposes a central inflation and deflation replacement detection device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a central inflation and deflation replacement detection device, including a vehicle chassis, a wheel hub and a vehicle tire, multiple wheel hubs are rotatably connected to the lower sides of the vehicle chassis, multiple outer sides of the wheel hubs are fixedly installed with vehicle tires, and the inner side of the vehicle chassis is provided with multiple replacement central inflation and deflation detection devices, the replacement central inflation and deflation detection device includes a sliding sleeve, a distance sensor and a lower slide rod, multiple sliding sleeves are fixedly installed at the bottom end of the vehicle chassis, multiple inner sides of the sliding sleeves are slidably connected with a lower slide rod, two of the distance sensors are fixedly installed at the inner top end of the sliding sleeve, the inner sides of the two distance sensors are slidably connected with a moving column, the bottom end of the moving column is movably connected to the upper side of the lower slide rod, and multiple lower slide rods are fixedly installed with a fitting arc plate at the lower end.

[0007] Preferably, a plurality of trigger structures for replacing detection devices are provided on the inner side of the vehicle chassis;

[0008] The trigger structure of the replacement detection device includes a signal receiver, an electromagnet and a plug;

[0009] Multiple signal receivers are fixedly installed on the inner wall of the vehicle chassis, multiple bolts are movably connected to the outer wall of the sliding sleeve, multiple ends of the bolts are movably connected to the inside of the lower sliding rod, multiple electromagnets are fixedly installed on one side of the outer wall of the sliding sleeve, multiple ends of the electromagnets are arranged opposite to the outside of the bolts, one side of the electromagnet is fixedly connected to a connecting wire, and the other end of the connecting wire is connected to the signal receiver.

[0010] Preferably, a plurality of fenders are fixedly mounted on the outer side of the vehicle chassis, the inner sides of the plurality of fenders are rotationally connected to the outer sides of the vehicle tires, and the top ends of the plurality of vehicle tires are arranged relative to the lower ends of the fitting arc plates.

[0011] Preferably, a central inflation and deflation device reinforcement installation structure is provided inside the vehicle chassis;

[0012] The central air-inflating and air-discharging device reinforcement installation structure comprises a protection box, an inner box and a central air-inflating and air-discharging device body;

[0013] The protection box is fixedly installed inside the vehicle chassis, the inner box is fixedly installed inside the protection box, an anti-collision layer is fixedly installed on the inner side of the inner box, the main body of the central inflation and deflation device is fixedly connected to the inner sides of the two anti-collision layers, the outer side of the main body of the central inflation and deflation device is fixedly connected to multiple air pipes, the other ends of the multiple air pipes are connected to the wheel hub through wheel side valves, the top end of the inner part of the protection box is fixedly connected to multiple damping blocks, and the bottoms of the multiple damping blocks are movably connected to the top end of the inner box.

[0014] Preferably, a protective box reinforcement fixing structure is provided on the outer side of the vehicle chassis;

[0015] The protection box reinforcement fixing structure includes a baffle, a reinforcing rib and a blocking block;

[0016] The baffle is fixedly mounted on the outer wall of the vehicle chassis, a plurality of the retaining blocks are fixedly connected to the inside of the vehicle chassis, the outer sides of the plurality of retaining blocks are fixedly connected to the inner side of the baffle, and reinforcing ribs are fixedly mounted on the inner sides of two of the retaining blocks.

[0017] Preferably, a vehicle roof is fixedly installed above the vehicle chassis, a transmission shaft is rotatably connected to the inner side of the vehicle chassis, ends of the transmission shaft are fixedly connected to a plurality of wheel hubs, and the main body of the central inflation and deflation device is electrically connected to a signal receiver.

[0018] The utility model proposes a central inflation and deflation replacement detection device, which has the beneficial effect that when the central inflation and deflation detection device is damaged, when the falling length of the lower slide bar changes, the distance length recognized by the moving column on the distance sensor will also change differently. In this way, the vehicle driver can detect the progress of the central inflation and deflation of the tire according to the length change recognized by the distance sensor, and can temporarily replace the central inflation and deflation detection function, so that the use effect of the central inflation and deflation replacement detection device is better.

[0019] The protection box is made of solid metal high-carbon steel with an inner wall. The protection box is directly welded to the inside of the vehicle chassis. The protection box has bulletproof and collision-proof functions. The inner box is used to provide a second layer of protection for the main body of the central inflation and deflation device. The anti-collision layer is made of a sturdy and durable light steel frame. The anti-collision layer is supported on the inside of the inner box, which can provide a third layer of protection for the main body of the central inflation and deflation device. The multi-layer and multi-protection reinforcement structure makes the main body of the central inflation and deflation device not easily damaged by external factors, thereby increasing the service life of the central inflation and deflation replacement detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 for Figure 1 A front cross-sectional schematic diagram of

[0022] Figure 3 for Figure 1 A side cross-sectional schematic diagram of

[0023] Figure 4 for Figure 2 Enlarged cross-sectional view of part A in the middle;

[0024] Figure 5 for Figure 4 Enlarged cross-sectional view of part B in the middle;

[0025] Figure 6 for Figure 2 Enlarged cross-sectional view of the middle C part;

[0026] Figure 7 for Figure 3 Enlarged cross-sectional view of area D in the middle.

[0027] In the figure: 1. vehicle chassis, 2. wheel hub, 3. vehicle tire, 4. vehicle roof, 5. mudguard, 6. replace the central inflation and deflation detection device, 61. sliding sleeve, 62. distance sensor, 63. moving column, 64. lower slide bar, 65. fitting arc plate, 7. replace the detection device trigger structure, 71. signal receiver, 72. connecting line, 73. electromagnet, 74. plug, 8. central inflation and deflation device reinforcement installation structure, 81. protection box, 82. inner box, 83. anti-collision layer, 84. central inflation and deflation device body, 85. damping block, 86. air supply pipe, 9. protection box reinforcement fixing structure, 91. baffle, 92. reinforcing rib, 93. blocking block 10. transmission shaft. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] See also Figure 1-7 A central inflation and deflation replacement detection device includes a vehicle chassis 1, a wheel hub 2 and a vehicle tire 3. Multiple wheel hubs 2 are rotatably connected to both sides of the lower side of the vehicle chassis 1. Vehicle tires 3 are fixedly installed on the outer sides of multiple wheel hubs 2. The vehicle tires 3 are sleeved on the outer sides of the wheel hubs 2 and rotate with the wheel hubs 2. Multiple replacement central inflation and deflation detection devices 6 are provided on the inner side of the vehicle chassis 1. The replacement central inflation and deflation detection devices 6 include a sliding sleeve 61, a distance sensor 62 and a sliding rod 64. Multiple sliding sleeves 61 are fixedly installed at the bottom end of the vehicle chassis 1. When the central inflation and deflation detection device is damaged, a replacement detection device is needed to complete the central inflation and deflation detection work.

[0030] The inner sides of the plurality of sliding sleeves 61 are slidably connected with a sliding rod 64, two distance sensors 62 are fixedly mounted on the inner top of the sliding sleeves 61, and the inner sides of the two distance sensors 62 are slidably connected with a moving column 63, and the sliding rod 64 will slide downward along the sliding sleeve 61. When the central inflation and deflation detection device is damaged, the signal receiver 71 receives a signal and uses the attraction of the electromagnet 73 to pull out the plug 74. At this time, the sliding rod 64 loses its limiting force and slides downward. The sliding sliding rod 64 pushes the bottom end of the fitting arc plate 65 to fall onto the outer wall of the vehicle tire 3;

[0031] As the inflation and deflation device operates, the vehicle tire 3 will expand when the internal gas is sufficient, and will shrink when the gas is insufficient. The shrinking and expanding vehicle tire 3 will push the fitting guard plate 65 upward to drive the sliding rod 64 to fall to different lengths on the sliding sleeve 61. When the falling length of the sliding rod 64 changes, the distance length recognized by the moving column 63 on the distance sensor 62 will also change differently. In this way, the vehicle driver can detect the inflation and deflation of the center of the tire based on the length change recognized by the distance sensor 62. The bottom end of the moving column 63 is movably connected to the top of the sliding rod 64, and the lower ends of multiple sliding rods 64 are fixedly installed with fitting arc plates 65.

[0032] A plurality of trigger structures 7 for replacing detection devices are provided on the inner side of the vehicle chassis 1. The trigger structures 7 for replacing detection devices include a signal receiver 71, an electromagnet 73 and a plug 74. The plurality of signal receivers 71 are fixedly mounted on the inner wall of the vehicle chassis 1. The plurality of plugs 74 are movably connected to the outer wall of the sliding sleeve 61. The ends of the plurality of plugs 74 are movably connected to the inner side of the lower slide bar 64. The plurality of electromagnets 73 are fixedly mounted on one side of the outer wall of the sliding sleeve 61. When the electromagnets 73 are energized, the iron plugs 74 are pulled out of the outer wall of the sliding sleeve 61 by magnetic attraction. The ends of the plurality of electromagnets 73 are arranged opposite to the outer side of the plug 74. A connecting wire 72 is fixedly connected to one side of the electromagnet 73. The signal receiver 71 recognizes that the detection device of the main body of the central inflation and deflation device is damaged, and then activates the electromagnet 73 through the connecting wire 72. The other end of the connecting wire 72 is connected to the signal receiver 71.

[0033] When the central inflation and deflation detection device is damaged, a replacement detection device is needed to complete the central inflation and deflation detection work. The sliding rod 64 will slide downward along the sliding sleeve 61. When the central inflation and deflation detection device is damaged, the signal receiver 71 receives the signal and uses the attraction of the electromagnet 73 to pull out the plug 74. At this time, the sliding rod 64 loses the limiting force and will slide downward. The sliding sliding rod 64 will push the bottom end of the fitting arc plate 65 to fall on the outer wall of the vehicle tire 3. The vehicle tire 3 will expand when the internal gas is sufficient as the inflation and deflation device is running, and will shrink when the gas is insufficient. The shrinking and expanding vehicle tires 3 will push the fitting guard plate 65 upward to drive the sliding rod 64 to fall to different lengths in the sliding sleeve 61. When the falling length of the sliding rod 64 changes, the distance length recognized by the moving column 63 on the distance sensor 62 will also change differently. In this way, the vehicle driver can detect the inflation and deflation of the tire center according to the length change recognized by the distance sensor 62, and use the temporary replacement to realize the central inflation and deflation detection function, so that the use effect of the central inflation and deflation replacement detection device is better.

[0034] See also Figure 1-7A central air-inflating and air-discharging device reinforcement installation structure 8 is provided inside the vehicle chassis 1. The central air-inflating and air-discharging device reinforcement installation structure 8 includes a protection box 81, an inner box 82 and a central air-inflating and air-discharging device body 84. The protection box 81 is fixedly installed inside the vehicle chassis 1. The protection box 81 is made of metal high-carbon steel with a solid inner wall. The protection box 81 is directly welded to the inner side of the vehicle chassis 1. The protection box 81 has bulletproof and collision-proof functions. The inner box 82 is fixedly installed inside the protection box 81. The inner box 82 is sleeved on the inner side of the protection box 81. The inner box 82 is used to provide a second layer of protection for the central air-inflating and air-discharging device body 84. An anti-collision layer 83 is fixedly installed on the inner side of the inner box 82. The anti-collision layer 83 is made of a sturdy and durable light steel frame. The anti-collision layer 83 is supported on the inner side of the inner box 82, and can provide a third layer of protection for the central air-inflating and air-discharging device body 84.

[0035] The central air-filling and air-discharging device body 84 is fixedly connected to the inner side of the two anti-collision layers 83, and the outer side of the central air-filling and air-discharging device body 84 is fixedly connected to multiple air delivery pipes 86. After the central air-filling and air-discharging device body 84 is started, the gas inside the gas storage bottle will be transported to multiple vehicle tires 3 along the air delivery pipes 86 to realize the inflation and deflation of the vehicle tires 3. The other ends of the multiple air delivery pipes 86 are connected to the wheel hub 2 through the wheel side valve. The top of the inner part of the protection box 81 is fixedly connected with multiple damping blocks 85, which are made of polymer materials. The damping blocks 85 can reduce the external pressure acting on the inner box 82, thereby reducing the external impact force on the central air-filling and air-discharging device body 84. The bottom of the multiple damping blocks 85 is movably connected to the top of the inner box 82.

[0036] The protection box 81 is made of high-carbon metal steel with a solid inner wall. The protection box 81 is directly welded to the inner side of the vehicle chassis 1. The protection box 81 has bulletproof and collision-proof functions. The inner box 82 is used to provide a second layer of protection for the central inflation and deflation device body 84. The anti-collision layer 83 is made of a sturdy and durable light steel frame. The anti-collision layer 83 is supported on the inner side of the inner box 82, and can provide a third layer of protection for the central inflation and deflation device body 84. After the central inflation and deflation device body 84 is started, the gas inside the gas storage bottle will be transported along the gas pipe 86 to multiple vehicle tires 3 to realize the inflation and deflation of the vehicle tires 3. The damping block 85 is made of a polymer material. The damping block 85 can reduce the external pressure acting on the inner box 82, thereby reducing the external impact force on the central inflation and deflation device body 84. The multi-layer and multi-faceted protection reinforcement structure makes the central inflation and deflation device body 84 not easily damaged by external factors, thereby improving the service life of the central inflation and deflation replacement detection device.

[0037] See also Figure 1-7A protection box reinforcement fixing structure 9 is provided on the outside of the vehicle chassis 1. The protection box reinforcement fixing structure 9 includes a baffle 91, a reinforcing rib 92 and a blocking block 93. The baffle 91 is fixedly installed on the outer wall of the vehicle chassis 1. A plurality of blocking blocks 93 are fixedly connected to the inside of the vehicle chassis 1. The outer sides of the plurality of blocking blocks 93 are fixedly connected to the inner side of the baffle 91. The blocking block 93 is made of solid metal steel. The blocking block 93 is welded to the inner side of the vehicle chassis 1. The blocking block 93 is used to limit the position of the baffle 91. The baffle 91 is fixed to the outer side of the blocking block 93 by bolts. The baffle 91 is made of bulletproof and explosion-proof tungsten alloy steel. The baffle 91 is blocked at the front end of the protection box 81, which can reduce the damage to the internal central inflation and deflation detection device body 84 caused by explosions, etc. The inner sides of the two blocking blocks 93 are fixedly installed with reinforcing ribs 92. The reinforcing ribs 92 are made of high-strength metal steel vertically connected to the inner side of the blocking block 93. A vehicle roof 4 is fixedly installed above the vehicle chassis 1;

[0038] The inner side of the vehicle chassis 1 is rotatably connected with a transmission shaft 10, which is connected to the output shaft of the vehicle engine. The transmission shaft 10 will drive multiple wheel hubs 2 to rotate, and the wheel hubs 2 will drive the vehicle tires 3 to rotate, so that the vehicle can travel. The ends of the transmission shaft 10 are fixedly connected to the multiple wheel hubs 2, and the central inflation and deflation device body 84 is electrically connected to the signal receiver 71. Multiple mudguards 5 are fixedly installed on the outer side of the vehicle chassis 1. The mudguards 5 are made of aluminum alloy and buckled on the outer sides of the vehicle tires 3 to reduce the adhesion of silt to the tires. The inner sides of the multiple mudguards 5 are rotatably connected to the outer sides of the vehicle tires 3, and the top ends of the multiple vehicle tires 3 are arranged relative to the lower ends of the fitting arc plates 65.

[0039] Working principle:

[0040] When the central inflation and deflation device is installed inside the chassis of the armored vehicle instead of the detection device, the detection function of the central inflation and deflation device of the armored vehicle wheel tire is realized:

[0041] Central gas filling and deflation replacement detection device instead of the backup detection device:

[0042] When the central inflation and deflation detection device is damaged, a replacement detection device is needed to complete the central inflation and deflation detection work. The lower slide bar 64 will slide downward along the sliding sleeve 61. When the central inflation and deflation detection device is damaged, the signal receiver 71 receives the signal and uses the attraction of the electromagnet 73 to pull out the plug 74. At this time, the lower slide bar 64 loses the limiting force and will slide downward. The sliding lower slide bar 64 will push the bottom end of the fitting arc plate 65 to fall on the outer wall of the vehicle tire 3. As the inflation and deflation device is running, the vehicle tire 3 will expand when the internal gas is sufficient, and will shrink when the gas is insufficient. The shrinking and expanding vehicle tire 3 will push the fitting guard plate 65 upward to drive the lower slide bar 64 to fall to different lengths in the sliding sleeve 61. When the falling length of the lower slide bar 64 changes, the distance length recognized by the moving column 63 on the distance sensor 62 will also change differently. In this way, the vehicle driver can detect the progress of the central inflation and deflation of the tire according to the length change recognized by the distance sensor 62.

[0043] Central gas filling and deflation instead of the protection structure of the detection device:

[0044] The protection box 81 is made of high-carbon steel with a solid inner wall. The protection box 81 is directly welded to the inner side of the vehicle chassis 1. The protection box 81 has bulletproof and collision-proof functions. The inner box 82 is used to provide a second layer of protection for the central inflation and deflation device body 84. The anti-collision layer 83 is made of a sturdy and durable light steel frame. The anti-collision layer 83 is supported on the inner side of the inner box 82, and can provide a third layer of protection for the central inflation and deflation device body 84. After the central inflation and deflation device body 84 is started, the gas in the gas storage bottle will be transported along the gas pipe 86 to multiple vehicle tires 3 to realize the inflation and deflation of the vehicle tires 3. The damping block 85 is made of a polymer material. The damping block 85 can reduce the external pressure acting on the inner box 82, thereby reducing the external impact force on the central inflation and deflation device body 84.

[0045] The blocking block 93 is made of solid metal steel, welded to the inside of the vehicle chassis 1, and used to limit the position of the baffle 91, which is fixed to the outside of the blocking block 93 by bolts. The baffle 91 is made of bulletproof and explosion-proof tungsten alloy steel. The baffle 91 is blocked at the front end of the protection box 81 to reduce the damage to the internal central gas filling and deflation detection device body 84 caused by explosions, etc. The reinforcing rib 92 is made of high-strength metal steel vertically connected to the inside of the blocking block 93;

[0046] The inner side of the vehicle chassis 1 is rotatably connected with a transmission shaft 10, which is connected to the output shaft of the vehicle engine. The transmission shaft 10 drives multiple wheel hubs 2 to rotate, and the wheel hubs 2 drive the vehicle tires 3 to rotate, so that the vehicle can travel. Multiple mudguards 5 are fixedly installed on the outer side of the vehicle chassis 1. The mudguards 5 are made of aluminum alloy and buckled on the outer sides of the vehicle tires 3 to reduce the adhesion of silt to the tires.

[0047] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A central inflation and deflation alternative detection device, comprising a vehicle chassis (1), a wheel hub (2) and a vehicle tire (3), Features: The plurality of wheel hubs (2) are rotatably connected to both sides of the lower side of the vehicle chassis (1); the outer sides of the plurality of wheel hubs (2) are fixedly mounted with vehicle tires (3); the inner side of the vehicle chassis (1) is provided with a plurality of alternative central inflation and deflation detection devices (6); the alternative central inflation and deflation detection devices (6) comprise a sliding sleeve (61), a distance sensor (62) and a lower slide rod (64); the plurality of sliding sleeves (61) are fixedly mounted on the bottom end of the vehicle chassis (1); the inner sides of the plurality of sliding sleeves (61) are slidably connected with the lower slide rod (64); two of the distance sensors (62) are fixedly mounted on the inner top end of the sliding sleeve (61); the inner sides of the two distance sensors (62) are slidably connected with a moving column (63); the bottom end of the moving column (63) is movably connected with the upper side of the lower slide rod (64); and the lower ends of the plurality of lower slide rods (64) are fixedly mounted with a fitting arc plate (65).

2. A central inflation and deflation replacement detection device according to claim 1, Features: A plurality of trigger structures (7) for replacing detection devices are provided on the inner side of the vehicle chassis (1); The replacement detection device trigger structure (7) comprises a signal receiver (71), an electromagnet (73) and a plug (74); A plurality of signal receivers (71) are fixedly mounted on the inner wall of the vehicle chassis (1); a plurality of plugs (74) are movably connected to the outer wall of the sliding sleeve (61); the ends of the plurality of plugs (74) are movably connected to the inside of the lower slide rod (64); a plurality of electromagnets (73) are fixedly mounted on one side of the outer wall of the sliding sleeve (61); the ends of the plurality of electromagnets (73) are arranged opposite to the outer side of the plugs (74); a connecting wire (72) is fixedly connected to one side of the electromagnet (73); and the other end of the connecting wire (72) is connected to the signal receiver (71).

3. A central inflation and deflation replacement detection device according to claim 1, Features: A plurality of fenders (5) are fixedly mounted on the outer side of the vehicle chassis (1); the inner sides of the plurality of fenders (5) are rotationally connected to the outer sides of the vehicle tires (3); and the top ends of the plurality of vehicle tires (3) are arranged opposite to the lower ends of the fitting arc plates (65).

4. A central inflation and deflation replacement detection device according to claim 1, Features: A central inflation and deflation device reinforcement installation structure (8) is provided inside the vehicle chassis (1); The central air-inflating and air-discharging device reinforcement installation structure (8) comprises a protection box (81), an inner box (82) and a central air-inflating and air-discharging device body (84); The protection box (81) is fixedly installed inside the vehicle chassis (1), the inner box (82) is fixedly installed inside the protection box (81), an anti-collision layer (83) is fixedly installed on the inner side of the inner box (82), the central inflation and deflation device body (84) is fixedly connected to the inner sides of the two anti-collision layers (83), the outer side of the central inflation and deflation device body (84) is fixedly connected to a plurality of air supply pipes (86), the other ends of the plurality of air supply pipes (86) are connected to the wheel hub (2) through wheel side valves, the top end of the protection box (81) is fixedly connected to a plurality of damping blocks (85), and the bottoms of the plurality of damping blocks (85) are movably connected to the top end of the inner box (82).

5. A central inflation and deflation replacement detection device according to claim 4, Features: A protective box reinforcement fixing structure (9) is provided on the outer side of the vehicle chassis (1); The protection box reinforcement fixing structure (9) comprises a baffle (91), a reinforcing rib (92) and a blocking block (93); The baffle (91) is fixedly mounted on the outer wall of the vehicle chassis (1), a plurality of the blocking blocks (93) are fixedly connected to the inside of the vehicle chassis (1), the outer sides of the plurality of blocking blocks (93) are fixedly connected to the inner side of the baffle (91), and reinforcing ribs (92) are fixedly mounted on the inner sides of two of the blocking blocks (93).

6. A central inflation and deflation replacement detection device according to claim 5, Features: A vehicle roof panel (4) is fixedly mounted above the vehicle chassis (1), a transmission shaft (10) is rotatably connected to the inner side of the vehicle chassis (1), the end of the transmission shaft (10) is fixedly connected to a plurality of wheel hubs (2), and the central inflation and deflation device body (84) is electrically connected to a signal receiver (71).

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