Cab frame structure

Abstract

The utility model relates to the technical field of cab frames, in particular to a cab frame structure which comprises a cab body, a U-shaped rod is fixedly connected to the bottom of the cab body, a bumper is arranged on one side of the U-shaped rod, the bumper is U-shaped, one ends of two arms of the bumper are fixedly connected with one sides of two arms of the U-shaped rod respectively, and the other ends of the two arms of the U-shaped rod are fixedly connected with the U-shaped rod. And a buffer mechanism is arranged on one side of the bumper. When an automobile collides with a truck, the automobile collides with the moving plate and the rotating plate in advance, the V-shaped plate is stressed and deformed in advance, collision kinetic energy is absorbed, meanwhile, the moving plate and the rotating plate are pushed by the automobile to slide along the U-shaped frame, and in the moving process of the moving plate, the collision sensor sends signals to the gas generators; the multiple gas generators are automatically started to inflate the air cushion, so that the air cushion is expanded and unfolded to be blocked between an automobile and a truck, the air cushion is impacted by the automobile, air in the air cushion is extruded out, kinetic energy of the automobile is absorbed, people in the automobile are protected, and damage to the truck is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cab frames, specifically to a cab frame structure. Background Technique

[0002] The front cab of a truck is generally at a relatively high position from the ground, while the cab of a car is generally closer to the ground due to the vehicle size. When a car collides with a parked truck during driving, due to the size difference between the car and the truck, the car will directly hit the lower part of the truck cab. For front-mounted trucks and some mid-mounted trucks, key components such as engines are arranged below the cab. When the car hits the front of the parked truck head, it will cause damage to the front of the truck head and internal key components, and the reaction force of the impact will pose a threat to the lives of the people inside the car, which is rather inconvenient. Generally, a truck relies on the energy-absorbing box of the front bumper to absorb kinetic energy, and then relies on the cab frame to directly bear the kinetic energy, with fewer other energy-absorbing means, which is rather inconvenient. Content of the Utility Model

[0003] The purpose of the utility model is to provide a cab frame structure to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A cab frame structure, including a cab body, a U-shaped rod is fixedly connected to the bottom of the cab body, and a bumper is arranged on one side of the U-shaped rod. The bumper is U-shaped, and one end of each arm of the bumper is fixedly connected to one side of each arm of the U-shaped rod, and a buffer mechanism is arranged on one side of the bumper;

[0006] The buffer mechanism includes a moving plate, and rotating plates are rotatably connected to both the top and bottom sides of the moving plate. An air cushion is arranged between the two rotating plates, and one side of the air cushion is fixedly connected to the adjacent sides of the two rotating plates.

[0007] Furthermore: Multiple circular holes are formed on one side of the air cushion, and gas generators are fixedly sleeved on the inner side walls of the multiple circular holes. One side of each of the multiple gas generators is fixedly connected to one side of the moving plate, and multiple air outlets are formed at both ends of the air cushion.

[0008] Furthermore: A collision sensor is fixedly connected to one side of the moving plate.

[0009] Furthermore: Two auxiliary plastic films are fixedly connected between the two rotating plates, and the air cushion is located between the two auxiliary plastic films.

[0010] Furthermore: A main plastic film is fixedly connected between the adjacent sides of the two rotating plates, and the main plastic film is located at one long side of the two rotating plates.

[0011] Furthermore, a plurality of V-shaped plates are fixedly connected to one side of the bumper, and fixing rods are arranged between the two arms of the plurality of V-shaped plates. Both ends of the plurality of fixing rods are fixedly connected with support plates, and one end of any support plate is fixedly connected with the other side of the moving plate.

[0012] Furthermore, U-shaped frames are fixedly connected to both ends of the bumper. Sliders are fixedly connected to both ends of the moving plate, and the two sliders are respectively slidably clamped inside the two U-shaped frames. Limit plates are fixedly connected to one ends of the two sliders.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By adding U-shaped rods to the original frame of the cab body and installing the bumper on the U-shaped rods, when the car hits the truck, the car first hits the moving plate and the rotating plate, and then the thinner V-shaped plates are deformed under force first to absorb the impact kinetic energy of the car. At the same time, the moving plate and the rotating plate are pushed by the car to slide along the U-shaped frame. During the movement of the moving plate, the collision sensor sends signals to a plurality of gas generators, causing the plurality of gas generators to start automatically to inflate the air cushion, so that the air cushion expands and unfolds to block between the car and the truck. By using the vehicle to hit the air cushion, the gas inside the air cushion is squeezed out to absorb the kinetic energy of the vehicle, thereby protecting the personnel inside the car and reducing the damage to the truck. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the buffer mechanism and the bumper structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the initial form of the air cushion of the present utility model;

[0018] Figure 4 is an exploded view of the buffer mechanism structure of the present utility model.

[0019] In the figure: 100, cab body; 110, U-shaped rod; 200, bumper; 210, U-shaped frame; 300, V-shaped plate; 310, fixing rod; 311, support plate; 400, buffer mechanism; 410, moving plate; 411, slider; 412, limit plate; 420, rotating plate; 421, secondary plastic film; 422, main plastic film; 430, air cushion; 431, air outlet; 440, gas generator; 450, collision sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 4 , in the embodiment of the present invention, the cab frame structure includes a cab body 100. A U-shaped rod 110 is fixedly connected to the bottom of the cab body 100. And a bumper 200 is arranged on one side of the U-shaped rod 110. The bumper 200 is U-shaped, and one end of each of the two arms of the bumper 200 is fixedly connected to one side of each of the two arms of the U-shaped rod 110. And a buffer mechanism 400 is arranged on one side of the bumper 200;

[0022] The buffer mechanism 400 includes a moving plate 410. And rotating plates 420 are rotatably connected to both the top and bottom sides of the moving plate 410. An air cushion 430 is arranged between the two rotating plates 420. And one side of the air cushion 430 and the adjacent sides of the two rotating plates 420 are fixedly connected.

[0023] Specifically, the two ends of the U-shaped rod 110 can be welded and fixed to the beams and columns on the original frame of the cab body 100 and are located below the cab body 100. Then the bumper 200 is installed on the U-shaped rod 110. When the vehicle hits the bumper 200 part, it will first hit the buffer mechanism 400. When hitting the buffer mechanism 400, a large amount of gas is filled into the air cushion 430, causing the air cushion 430 to expand. Thus, the expanded air cushion 430 blocks between the bumper 200 and the vehicle head, absorbs and buffers the impact kinetic energy of the vehicle to protect the personnel inside the vehicle, and at the same time reduces the damage to the truck head caused by the impact. In actual use, an energy absorption box can be arranged between the bumper 200 and the U-shaped rod 110 for secondary absorption of kinetic energy, thereby improving safety. The energy absorption box is a prior art and will not be elaborated here.

[0024] Embodiment 1

[0025] As Figures 3 - 4 shown, in this embodiment, a plurality of circular holes are formed in one side of the air cushion 430. And gas generators 440 are fixedly sleeved on the inner side walls of the plurality of circular holes. One side of each of the plurality of gas generators 440 is fixedly connected to one side of the moving plate 410. A plurality of air outlets 431 are formed at both ends of the air cushion 430. A collision sensor 450 is fixedly connected to one side of the moving plate 410.

[0026] In this embodiment, the collision sensor 450 is a ball-type sensor, and the gas generator 440 is a safety airbag gas generating device, both of which are existing devices. Moreover, the electrical connection relationship between the collision sensor 450 and the gas generator 440 can refer to the connection method in the working principle of an automotive airbag, which is an existing technology and will not be elaborated here. When the vehicle collides with the moving plate 410, the collision sensor 450 sends a signal to the gas generator 440, causing the gas generator 440 to self-activate and emit a large amount of gas. The large amount of gas is directly injected into the air cushion 430, causing the air cushion 430 to expand and unfold, and the air cushion 430 is blocked between the truck and the vehicle to form a buffer. The excess gas inside the air cushion 430 can be discharged from the air outlet 431 through multiple air outlets 431, preventing the gas inside the air cushion 430 from being excessive. When the vehicle impacts the air cushion 430, the air cushion 430 will deform to absorb the kinetic energy of the vehicle, and the gas discharged due to the deformation of the air cushion 430 can also be discharged from the air outlet 431.

[0027] As Figure 2 shown, in this embodiment, two secondary plastic films 421 are fixedly connected between the two rotating plates 420, and the air cushion 430 is located between the two secondary plastic films 421. A main plastic film 422 is fixedly connected between the adjacent sides of the two rotating plates 420, and the main plastic film 422 is located at one long side of the two rotating plates 420. A plurality of V-shaped plates 300 are fixedly connected to one side of the bumper 200, and fixing rods 310 are provided between the two arms of the plurality of V-shaped plates 300. Both ends of the plurality of fixing rods 310 are fixedly connected with support plates 311, and one end of any support plate 311 is fixedly connected to the other side of the moving plate 410.

[0028] In specific implementation, the relative position relationship between the movable plate 410 and the two rotating plates 420 is fixed by the main plastic film 422 and the auxiliary plastic film 421. In the initial state, the air cushion 430 is folded in a U shape between the two rotating plates 420, and the two rotating plates 420 and the movable plate 410 also form a U shape to store the air cushion 430. The main plastic film 422 and the auxiliary plastic film 421 can prevent dust and other debris from sticking to the air cushion 430. When the gas generator 440 injects gas into the air cushion 430, the air cushion 430 expands and unfolds, and the main plastic film 422 and the auxiliary plastic film 421 are naturally torn. The movable plate 410 is fixed to the bumper 200 by multiple V-shaped plates 300 and fixing rods 310. The V-shaped plates 300 are made of thinner metal. When the car hits the movable plate 410 and the two rotating plates 420, it may generate a large vibration or shake that causes the main The plastic film 422 and the auxiliary plastic film 421 rupture naturally, allowing the air cushion 430 to initially unfold. Since the multiple V-shaped plates 300 are relatively thin and easy to deform, when the car hits the rotating plate 420 and the movable plate 410, the multiple V-shaped plates 300 are first deformed by force to absorb the kinetic energy of the car impact. During the deformation of the V-shaped plate 300, the car pushes the movable plate 410 to move toward the bumper 200. During the movement of the movable plate 410, the collision sensor 450 can send a signal to enable the multiple gas generators 440 to inflate the air cushion 430. The air cushion 430 can be unfolded by the internal gas pressure, and during the unfolding process, it will generate a reaction force with the front of the car and bounce off. It will leave the front of the car and squeeze the V-shaped plate 300 to deform. After the air cushion 430 is fully unfolded, it will receive the car impact, so that the air cushion 430 has enough time and space to unfold and receive the front of the car.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, the U-shaped frame 210 is provided to facilitate the stable movement of the moving plate 410 .

[0031] like Figure 2 As shown, in this embodiment, both ends of the bumper 200 are fixedly connected to U-shaped frames 210, both ends of the movable plate 410 are fixedly connected to sliders 411, and the two sliders 411 are respectively slidably engaged in the inside of the two U-shaped frames 210, and one end of the two sliders 411 is fixedly connected to a limiting plate 412.

[0032] In specific implementation, when a car hits the movable plate 410 and drives it to move toward the bumper 200, the movable plate 410 can slide inside the adjacent U-shaped frame 210 through the slider 411 and the limit plate 412 to maintain straight movement, thereby preventing the movable plate 410 from tilting.

[0033] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0034] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cab frame structure, comprising a cab body (100), characterized in that: A U-shaped rod (110) is fixedly connected to the bottom of the cab body (100), and a bumper (200) is provided on one side of the U-shaped rod (110); the bumper (200) is U-shaped, and one end of two arms of the bumper (200) is respectively fixedly connected to one side of two arms of the U-shaped rod (110), and a buffer mechanism (400) is provided on one side of the bumper (200); The buffer mechanism (400) comprises a movable plate (410), and both the top and bottom sides of the movable plate (410) are rotatably connected to rotating plates (420), an air cushion (430) is arranged between the two rotating plates (420), and one side of the air cushion (430) is fixedly connected to the adjacent sides of the two rotating plates (420).

2. The cab frame structure according to claim 1, characterized in that: A plurality of circular holes are provided on one side of the air cushion (430), and gas generators (440) are fixedly sleeved on the inner side walls of the plurality of circular holes. One side of the plurality of gas generators (440) is fixedly connected to one side of the movable plate (410), and a plurality of gas outlets (431) are provided at both ends of the air cushion (430).

3. The cab frame structure according to claim 2, characterized in that: A collision sensor (450) is fixedly connected to one side of the movable plate (410).

4. The cab frame structure according to claim 3, characterized in that: Two auxiliary plastic films (421) are fixedly connected between the two rotating plates (420), and the air cushion (430) is located between the two auxiliary plastic films (421).

5. The cab frame structure according to claim 4, characterized in that: A main plastic film (422) is fixedly connected between adjacent sides of the two rotating plates (420), and the main plastic film (422) is located at a long side of the two rotating plates (420).

6. The cab frame structure according to claim 5, characterized in that: A plurality of V-shaped plates (300) are fixedly connected to one side of the bumper (200), and a fixing rod (310) is provided between two arms of the plurality of V-shaped plates (300), and both ends of the plurality of fixing rods (310) are fixedly connected to supporting plates (311), and one end of any supporting plate (311) is fixedly connected to the other side of the movable plate (410).

7. The cab frame structure according to claim 6, characterized in that: Both ends of the bumper (200) are fixedly connected to a U-shaped frame (210), and both ends of the movable plate (410) are fixedly connected to a slider (411), and the two sliders (411) are respectively slidably engaged inside the two U-shaped frames (210), and one end of the two sliders (411) is fixedly connected to a limiting plate (412).

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