Butterfly-shaped large truck front bumper and mounting structure

Abstract

The invention relates to the technical field of bumpers, in particular to a butterfly-shaped large truck front bumper and a mounting structure, which comprises a bumper body, a screen plate, a pull pin and a force unloading assembly, a net plate is fixedly installed in the middle of the bumper body, pull pins are fixedly installed on the two sides of the bumper body respectively, a force unloading assembly is horizontally installed in the middle of the bumper body, and the force unloading assembly is located above the pull pins. The problems that when an existing bumper is subjected to large impact force, the bumper can sink into a vehicle body due to the too large impact force, damage caused by the impact force cannot be reduced to the maximum extent, meanwhile, during installation, the installation process of the bumper is tedious, and the installation efficiency of the bumper is reduced are solved; when the bumper is subjected to large impact force, the impact force can be reduced to the maximum extent, the bumper is prevented from sinking into a vehicle body, meanwhile, the installation procedure of the bumper is simplified, and the installation efficiency of the bumper is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bumpers, in particular to a butterfly-shaped large truck front bumper and a mounting structure. Background Art

[0002] Automobile bumpers are crucial safety devices that absorb and cushion external impacts, protecting the front and rear of the vehicle. In the early days, front and rear bumpers were often constructed from steel sheets stamped into channel steel, connected to the vehicle frame rails via riveting or welding. This not only created a large gap between the bumpers and the vehicle body, but also compromised visual quality. However, with the continuous development of the automotive industry and the widespread use of engineering plastics in the automotive industry, the bumper, a critical safety feature, has entered a new phase of innovation and development.

[0003] Existing bumpers have various structures. When subjected to an impact, the bumper can reduce the damage caused by the impact force. However, when the impact force is large, the bumper will sink into the vehicle body due to the excessive impact force, and the damage caused by the impact force cannot be minimized. At the same time, the installation process of the bumper is relatively cumbersome, which reduces the installation efficiency of the bumper. Summary of the Invention

[0004] The technical objectives to be achieved by the present invention are: to solve the problem that when the existing bumper is subjected to a large impact force, the bumper will sink into the vehicle body due to the excessive impact force, and the damage caused by the impact force cannot be minimized. At the same time, during installation, the installation process of the bumper is relatively cumbersome, which reduces the installation efficiency of the bumper; to achieve that when the bumper is subjected to a large impact force, the impact force can be minimized to avoid the bumper sinking into the vehicle body, and at the same time, the installation process of the bumper is simplified, and the installation efficiency of the bumper is improved.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A butterfly-shaped front bumper for a large truck comprises: a bar body, a mesh plate, a pull pin and a force unloading assembly; the mesh plate is fixedly mounted in the middle of the bar body, pull pins are fixedly mounted on both sides of the bar body, a force unloading assembly is horizontally mounted in the middle of the bar body, and the force unloading assembly is located above the pull pin, and the impact force exerted on the bar body is buffered by the force unloading assembly, and the bar body is caused to move laterally to unload the force.

[0006] Preferably, the force unloading assembly includes an arc block, a connecting rod, a tension spring, a rectangular block, a limit block, a fixing part and a roller; the arc surface of the arc block is movably installed with two connecting rods, a tension spring is installed between the two connecting rods, and a rectangular block is movably installed at one end of the two connecting rods away from the arc block, and the two ends of the rectangular block close to the connecting rod are fixedly installed with limit blocks, and the two limit blocks are located on the outside of the two connecting rods, and the rectangular block is provided with multiple fixing parts on the side away from the connecting rod, and the multiple fixing parts are connected to the rectangular block through connecting parts, and the rectangular block is provided with a mounting groove on the side away from the connecting rod, and the two ends of the rectangular block close to the connecting rod are vertically provided with arc grooves, and the mounting groove and the arc groove are both used to install and place the lever body, and the multiple rollers are respectively provided at one end of the connecting rod close to the side of the arc block.

[0007] Preferably, arc-shaped cavities are formed at both ends of the rectangular block on a side close to the connecting rod, and the limiting block is located inside the arc-shaped cavity. The side of the limiting block close to the connecting rod is an inclined surface.

[0008] Preferably, one end of the connecting rod away from the arc-shaped block is connected to the rectangular block via a fixed shaft, and the two connecting rods are connected to the tension spring via a fixed block.

[0009] Preferably, a circular hole is formed at one end of the connecting rod close to the arc-shaped block, a rotating shaft is provided in the circular hole, and the top and bottom ends of the rotating shaft are rotatably connected to the rollers respectively.

[0010] Preferably, an arc-shaped chute is provided on the arc-shaped surface of the arc-shaped block, and arc-shaped baffles are respectively provided on the top and bottom of the arc-shaped chute.

[0011] A mounting structure for a butterfly-shaped front bumper of a large truck also includes a connecting block and a supporting block; the connecting block is connected to the arc block, which is connected to the supporting block, and the connecting block is located between the arc block and the supporting block, and the supporting block is fixedly installed at the front end of the vehicle.

[0012] Preferably, two slots are respectively provided on one side of the connecting block close to the supporting block.

[0013] Preferably, a rectangular cavity is opened in the middle of the support block, and two circular through holes are opened laterally symmetrically on the inner wall of the rectangular cavity, and rectangular grooves are opened on the inner wall of the two circular through holes along the axis, and the rectangular grooves, circular through holes and rectangular cavity are interconnected.

[0014] Preferably, a rotating rod is provided inside the rectangular cavity, a knob is provided on the top of the rotating rod, two pull ropes are provided on the rotating rod, and the two pull ropes pass through the circular through holes respectively, the free ends of the two pull ropes are connected with a card block, and the card block and the card slot cooperate with each other, compression springs are provided in the two rectangular slots respectively, and the two compression springs are respectively located on the inner sides of the two card blocks.

[0015] Beneficial effects of the present invention: 1. The present invention provides a force unloading assembly on the bumper. Through the mutual cooperation of the arc block and the roller on the force unloading assembly, when subjected to impact force, the roller can slide in the arc groove on the arc block to unload the impact force to the left or right, thereby minimizing the impact force, preventing the bumper from sinking into the vehicle body, and greatly reducing the damage caused by the impact force.

[0016] 2. The present invention provides a connecting block and a supporting block between the force unloading assembly and the vehicle body. The clamping block on the supporting block cooperates with the clamping groove on the connecting block, and the entire bumper can be quickly installed on the vehicle body, thereby simplifying the bumper installation process and greatly improving the bumper installation efficiency. At the same time, the bumper can be quickly disassembled by turning the knob and pulling the clamping block to move.

[0017] 3. The present invention provides a tension spring on the connecting rod, so that when the bumper is subjected to impact force, the tension spring can buffer the impact force, so that the angle between the two connecting rods is expanded, thereby reducing the damage to the roller caused by the impact force and avoiding the subsequent inability to unload the impact force, thereby improving the safety of the bumper. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the embodiment of the present disclosure.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the embodiment of the present disclosure from another perspective.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the overall force-free assembly in the embodiment of the present disclosure.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the force unloading assembly in the embodiment of the present disclosure.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the force unloading assembly without the arc block in the embodiment of the present disclosure.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the rectangular block, connecting rod, and tension spring in the embodiment of the present disclosure.

[0024] Figure 7 Schematic diagram of the three-dimensional structure of the arc block in the embodiment of the present disclosure.

[0025] Figure 8 This is a cross-sectional view of the connection between the connecting block and the supporting block in the embodiment of the present disclosure.

[0026] Figure 9 This is a cross-sectional view of the embodiment of the present disclosure in which the connecting block and the supporting block are not engaged.

[0027] Figure 10 2 is a cross-sectional view of the rotating rod and knob in the middle of the support block in the embodiment of the present disclosure.

[0028] 1. The lever body; 2. The mesh plate; 3. The pull pin; 4. The force unloading assembly; 41. The arc block; 411. The arc slide; 412. The arc baffle; 413. The connecting block; 4131. The card slot; 414. The supporting block; 415. The rectangular cavity; 416. The circular through hole; 417. The rectangular slot; 418. The rotating rod; 4181. The pull rope; 4182. The card block; 4183. The compression spring; 4184. The knob; 42. The connecting rod; 421. The circular hole; 422. The fixed block; 43. The tension spring; 44. The rectangular block; 441. The arc cavity; 442. The fixed shaft; 45. The limit block; 46. The fixing part; 461. The connecting part; 47. The mounting groove; 48. The arc slot; 49. The roller; 491. The rotating shaft. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] like Figures 1 to 7 As shown, a butterfly-type front bumper for large trucks comprises: a bar body 1, a mesh plate 2, a pull pin 3 and a force unloading assembly 4; the mesh plate 2 is fixedly installed in the middle of the bar body 1, and the pull pins 3 are fixedly installed on both sides of the bar body 1; the force unloading assembly 4 is horizontally installed in the middle of the bar body 1, and the force unloading assembly 4 is located above the pull pin 3. The impact force exerted on the bar body 1 is buffered by the force unloading assembly 4, and the bar body 1 is moved laterally to unload the force.

[0031] The bar body 1 serves as the main frame of the bumper. The overall structure is arc-shaped and outward-expanding. The two sides extend symmetrically to form side wings similar to butterfly wings, which not only increases the collision contact area but also reduces the driving wind resistance through the streamlined design.

[0032] The mesh plate 2 adopts a hollow grid structure and is fixed to the middle part of the bar body 1 by bolts. Its grid density has been optimized, which can not only effectively prevent the impact of road gravel and debris on the internal components of the front of the vehicle, but also ensure the ventilation and heat dissipation needs of the front engine compartment. At the same time, the edges of the mesh plate 2 are rounded to avoid additional damage when scratched.

[0033] It should be noted that the pull pins 3 are conventional and are symmetrically fixed at the root of the flanks on both sides of the bar body 1, vertically connected to the bar body 1. The pull pins 3 also serve as force points during bumper removal, making it easier for the operator to grip and apply force, and at the same time, further strengthening the connection between the bar body 1 and the vehicle body. The force unloading component 4 is the core protective structure of the bumper and is installed horizontally on the inner side of the middle part of the bar body 1. When the bar body 1 is subjected to impact force, the force unloading component 4 first uses the elastic deformation of the pull rope 4181 spring to preliminarily buffer the instantaneous impact force; then uses the connecting rod 42 to slide in the arc-shaped slide groove 411 to drive the bar body 1 to shift horizontally to the left or right, and guide part of the impact force to the lateral direction to unload the force, thereby greatly reducing the direct effect of the impact force on the front of the large truck, and minimizing the damage to the front of the truck caused by the collision.

[0034] like Figure 4 and Figure 5 As shown, the unloading assembly 4 includes an arc block 41, a connecting rod 42, a tension spring 43, a rectangular block 44, a limit block 45, a fixing member 46 and a roller 49; the arc surface of the arc block 41 is movably mounted with two connecting rods 42, a tension spring 43 is installed between the two connecting rods 42, and a rectangular block 44 is movably mounted on one end of the two connecting rods 42 away from the arc block 41, and the two ends of the rectangular block 44 close to the side of the connecting rod 42 are fixedly mounted with limit blocks 45, and the two limit blocks 45 are located between the two connecting rods 4 2, a plurality of fixing members 46 are respectively provided on the side of the rectangular block 44 away from the connecting rod 42, and the plurality of fixing members 46 are connected to the rectangular block 44 through a connecting member 461, and a mounting groove 47 is provided on the side of the rectangular block 44 away from the connecting rod 42, and arc grooves 48 are respectively vertically provided at both ends of the side of the rectangular block 44 away from the connecting rod 42, and the mounting groove 47 and the arc groove 48 are both used for installing and placing the lever body 1, and the plurality of rollers 49 are respectively provided at one end of the connecting rod 42 close to the side of the arc block 41.

[0035] The arc block 41 serves as the basic bearing component of the unloading assembly 4 and is in an arc-shaped bulge as a whole. The arc surface of the arc block 41 is adapted to the movable trajectory of the connecting rod 42 , providing a stable movable support surface for the two connecting rods 42 . The two connecting rods 42 are solid alloy rods, symmetrically arranged. Their ends closest to the arc block 41 are hingedly mounted on the curved surface of the arc block 41, allowing for flexible rotation along the curved surface. A tension spring 43 is mounted horizontally between the two connecting rods 42. The spring's ends are fixedly connected to the midsection of the connecting rods 42. In its naturally contracted state, when the connecting rods 42 are forced outward, the spring stretches and generates a reverse pull, thereby cushioning the impact. Rectangular block 44 is a cuboid structure, offering high strength and deformation resistance. Two stoppers 45 are symmetrically welded to each end of one side of the connecting rod 42. These stoppers 45 have inclined surfaces on their inner sides, facing toward the connecting rod 42. When the connecting rod 42 moves outward and contacts the inclined surfaces of the stoppers 45, they form a rigid barrier, limiting further outward expansion and preventing damage to the tension spring 43 due to excessive stretching. This also prevents contact between the tension spring 43 and the curved block 41.

[0036] On the side of rectangular block 44 facing away from connecting rod 42, there are four to six fixings 46. These fixings 46 are perforated metal sheets, fastened to pre-installed screw holes on the surface of rectangular block 44 via high-strength bolts (i.e., connecting members 461). Fixings 46 are evenly spaced across the horizontal axis of rectangular block 44 to enhance the stability of the connection between rectangular block 44 and lever body 1, preventing the lever body 1 from loosening or shifting when subjected to force. In the middle of one side of the rectangular block 44, away from the connecting rod 42, there is a mounting groove 47 that matches the contour of the middle portion of the lever body 1. The inner wall of the groove is inlaid with a rubber pad to reduce the hard collision between the lever body 1 and the rectangular block 44. At each end of this side of the rectangular block 44, there is a vertical arcuate groove 48. The curvature of the arcuate groove 48 matches the arcuate flanks on both sides of the lever body 1, and the groove is also provided with anti-slip grooves. The mounting groove 47 and the two arcuate grooves 48 together constitute the mounting and positioning structure of the lever body 1. The mounting groove 47 is used to fix the middle portion of the lever body 1, and the arcuate groove 48 is used to limit the sides of the lever body 1. The three work together to firmly embed the lever body 1 in the rectangular block 44, forming an integral force-bearing structure. Two rollers 49 are embedded in the end of the connecting rod 42 near the side of the arc block 41. The outer diameter of the roller 49 is adapted to the width of the arc groove 411 inside the arc block 41. When the connecting rod 42 drives the roller 49 to slide in the arc groove 411, the roller 49 can convert sliding friction into rolling friction, greatly reducing the movement resistance, making the movement of the connecting rod 42 smoother, and ensuring the efficient buffering and unloading process.

[0037] like Figure 5 and Figure 6As shown, arc-shaped cavities 441 are formed at both ends of the rectangular block 44 close to the connecting rod 42 , and the limiting block 45 is located inside the arc-shaped cavity 441 . The side of the limiting block 45 close to the connecting rod 42 is an inclined surface.

[0038] An arc-shaped cavity 441 is provided at each end of one side of the rectangular block 44 close to the connecting rod 42. The cavity is concave inward along the thickness direction of the rectangular block 44. The curvature of the arc-shaped cavity 441 is adapted to the outer contour of the limit block 45. The limit block 45 is integrally embedded in the arc-shaped cavity 441 and is fixedly connected to the bottom of the cavity by welding, forming a rigid whole with the rectangular block 44.

[0039] When the connecting rod 42 moves outward due to the impact force, the connecting rod 42 contacts the inclined surface of the limit block 45 after moving a certain distance. The entire connecting rod 42 contacts the inclined surface, which increases the force-bearing area and prevents the connecting rod 42 from breaking due to excessive instantaneous impact force. At the same time, it also prevents the roller 49 from being damaged on the arc block 41, further ensuring the stability and reliability of the unloading component 4 during the force-bearing process.

[0040] like Figure 6 As shown, one end of the connecting rod 42 away from the arc block 41 is connected to the rectangular block 44 through a fixed shaft 442 , and the two connecting rods 42 are connected to the tension spring 43 through a fixed block 422 .

[0041] One end of the connecting rod 42 away from the arc block 41 is movably connected to the rectangular block 44 through a fixed shaft 442. The connecting rod 42 can rotate flexibly around the fixed shaft 442. The tension spring 43 between the two connecting rods 42 is connected through a fixed block 422. The fixed blocks 422 are block-shaped metal components, two in total, which are welded to the middle position of the two connecting rods 42 and symmetrically distributed on both sides of the tension spring 43. When the connecting rod 42 expands outward due to the impact force, the fixed block 422 can stably transmit the pulling force to the tension spring 43, ensuring that the spring effectively buffers the impact force through elastic deformation, while preventing the spring from falling off or failing due to force offset.

[0042] like Figure 6 As shown, a circular hole 421 is formed at one end of the connecting rod 42 close to the arc block 41 , and a rotating shaft 491 is provided in the circular hole 421 . The top and bottom ends of the rotating shaft 491 are rotatably connected to the roller 49 respectively.

[0043] A cylindrical rotating shaft 491 is passed through the circular hole 421. The rotating shaft 491 is made of high-strength alloy steel. The upper and lower ends extend out of the circular hole 421 respectively, and the middle part of the shaft body fits tightly with the inner wall of the circular hole 421 to ensure that the rotating shaft 491 will not shake radially in the circular hole 421 and can rotate flexibly. The top and bottom ends of the rotating shaft 491 are rotatably connected to the two rollers 49 via bearings, respectively. This ensures that when the rollers 49 slide in the arc-shaped grooves 411 of the arc-shaped block 41, the friction coefficient with the arc-shaped grooves 411 is significantly reduced through rolling motion, providing a basis for the smooth movement of the connecting rod 42 in the unloading assembly 4, thereby ensuring that the lever body 1 can achieve stable unloading action through the rolling of the rollers 49 when subjected to force.

[0044] like Figure 7 As shown, the arc surface of the arc block 41 is provided with an arc chute 411 , and the top and bottom of the arc chute 411 are respectively provided with arc baffles 412 .

[0045] The top and bottom of the curved chute 411 are each equipped with a curved baffle 412. The baffles are made of the same high-strength alloy as the curved block 41 and are welded to the curved surface of the curved block 41. The curvature of the baffles is identical to that of the chute. The top and bottom baffles form a longitudinal limit structure for the roller 49. When the roller 49 slides along the curved trajectory within the curved chute 411, the baffles prevent the roller 49 from detaching from the curved chute 411 due to excessive impact force, ensuring that the roller 49 always moves within the curved chute 411, thereby ensuring the stability and unloading effect of the unloading assembly 4 during the load-bearing process. like Figures 8 to 10 As shown, a mounting structure for a butterfly-type front bumper of a large truck also includes a connecting block 413 and a supporting block 414; the connecting block 413 is connected to the arc block 41, and the connecting block 413 is connected to the supporting block 414, and the connecting block 413 is located between the arc block 41 and the supporting block, and the supporting block 414 is fixedly installed at the front end of the vehicle.

[0046] The connecting block 413 and the supporting block 414 are key transition components for achieving a stable connection between the bumper and the front of the vehicle. The connecting block 413 is an arc-shaped block 41 structure, one side of which is rigidly connected to the end of the arc block 41 by bolts, and the contact surface is precisely machined to ensure a close fit. The other side is designed as an arc-shaped surface that matches the supporting block 414. A rectangular groove 417 is preset inside the connecting block 413, and a clamping block 4182 with a compression spring 4183 is installed in the rectangular groove 417. The end of the clamping block 4182 is wedge-shaped, which can be precisely fitted into the clamping groove 4131 on the surface of the supporting block 414, thereby achieving rapid locking of the connecting block 413 and the supporting block 414. Support block 414 is a rectangular steel member, secured by welding to a pre-set mounting position on the front end of the truck. A curved groove complementary to the curved surface of connecting block 413 is machined into the side of support block 414 facing connecting block 413. Inside the groove, a corresponding position is provided with a slot 4131 that mates with locking block 4182. When connecting block 413 and support block 414 are docked, their curved surfaces completely align, and axial positioning is achieved through the engagement of locking block 4182 with slot 4131. like Figures 8 and 9 As shown, two slots 4131 are respectively defined on one side of the connecting block 413 close to the supporting block 414 .

[0047] Two slots 4131 are symmetrically defined along the horizontal axis on one side of the connecting block 413, located near the supporting block 414. The spacing between the two slots 4131 matches the spacing between the two blocks 4182 on the supporting block 414, ensuring that the blocks 4182 fit precisely into the grooves during installation. The inner walls of the slots 4131 are detailed with anti-slip grooves. When the blocks 4182 are engaged by the compression springs 4183, the grooves increase friction between the two, preventing the blocks 4182 from loosening and falling out due to vehicle vibrations during driving. This enhances the stability of the connection between the connecting block 413 and the supporting block 414, providing a reliable anchoring foundation for the overall bumper structure.

[0048] like Figures 8 and 9 As shown, a rectangular cavity 415 is opened in the middle of the support block 414, and two circular through holes 416 are opened laterally and symmetrically on the inner wall of the rectangular cavity 415, and the two circular through holes 416 are respectively opened with rectangular grooves 417 along the inner wall of the axis, and the rectangular grooves 417, the circular through holes 416 and the rectangular cavity 415 are interconnected.

[0049] The support block 414 serves as the core load-bearing component connecting the bumper to the front of the truck, and its overall structure is a rectangular parallelepiped. It is worth noting that the rectangular groove 417, the circular through hole 416 and the rectangular cavity 415 are interconnected to form a continuous three-dimensional channel: the rectangular cavity 415 provides a mounting base for the compression spring 4183, the circular through hole 416 is used for the passage of the pull rope 4181, and the rectangular groove 417 is used for the movement of the block 4182, ensuring that the block 4182 can only move in a straight line in the horizontal direction. This through-structure ensures that the block 4182 can slide smoothly from the rectangular groove 417 into the slot 4131 during installation, and can also be pulled back into the rectangular cavity 415 by the pull rope 4181 during disassembly, realizing that the bumper can be quickly assembled and disassembled.

[0050] like Figures 8 to 10As shown, a rotating rod 418 is provided inside the rectangular cavity 415, and a knob 4184 is provided on the top of the rotating rod 418. Two pull ropes 4181 are respectively provided on the rotating rod 418, and the two pull ropes 4181 respectively pass through the circular through holes 416, and the free ends of the two pull ropes 4181 are connected with a clamping block 4182, and the clamping block 4182 cooperates with the clamping slot 4131, and compression springs 4183 are respectively provided in the two rectangular grooves 417, and the two compression springs 4183 are respectively located on the inner sides of the two clamping blocks 4182.

[0051] Two pull rope 4181 connection points are symmetrically fixed in the middle of the shaft of the rotating rod 418. One end of the two pull ropes 4181 are respectively wrapped around and fastened to the connection points. The pull ropes 4181 are woven with high-strength nylon fibers and have tensile and wear-resistant properties. The other ends thereof pass through the circular through holes 416 on both sides of the support block 414 to connect with the card block 4182. When the card block 4182 is popped out by the elastic potential energy of the compression spring 4183, the wedge-shaped card head can be accurately embedded in the card slot 4131, and a firm locking is achieved through surface contact. A compression spring 4183 is built into each of the two rectangular grooves 417. In the natural state, the compression spring 4183 is in an uncompressed state. When it is locked in, the card block 4182 is pushed outward by its own elastic force and locked into the inside of the card slot 4131. When the pull rope 4181 pulls the card block 4182 to move inward, the compression spring 4183 will be compressed and store elastic potential energy. After releasing the pull rope 4181, the card block 4182 can be quickly pushed to reset, thereby realizing the locking function. When the rotating knob 4184 drives the rotating rod 418 to rotate, the pull rope 4181 is wrapped around the rotating rod 418 and generates tension, pulling the two clamping blocks 4182 to overcome the elastic force of the compression spring 4183 and shrink into the rectangular cavity 415, and the clamping head disengages from the clamping slot 4131 of the connecting block 413, thereby unlocking the bumper; after loosening the knob 4184, the compression spring 4183 releases its elastic potential energy, pushing the clamping block 4182 to slide outward along the circular through hole 416, and the clamping head re-embeds into the clamping slot 4131 to complete the locking. The entire process efficiently adapts to the needs of quick assembly and disassembly of the bumper.

[0052] It should be noted that before the bar body 1 is installed on the front end of the truck, the bar body 1 will first be connected to the mounting groove 47 and the arc groove 48 on the rectangular block 44 through the connecting piece 461 and the fixing block 422, so that the bar body 1 and the unloading assembly 4 become a whole.

[0053] When installing, first, the support block 414 is fixedly installed at the front end of the large truck. When installing the bar body 1, it is necessary to align the connecting block 413 on the arc block 41 horizontally with the arc surface of the support block 414, and push the arc block 411 forward to drive the connecting block 413 and the support block 414 to contact each other. At this time, the clamping block 4182 on the support block 414 will first contact the connecting block 413. As the connecting block 413 continues to move, the clamping block 4182 will be moved into the rectangular groove 417 through the connecting block 413, and the compression spring 4183 in the rectangular groove 417 will be compressed. When the arc surface between the connecting block 413 and the support block 414 is completely in contact, the clamping block 4182 will use the elastic potential energy of the compression spring 4183 itself to move the clamping block 4182 outward and be clamped into the inside of the clamping groove 4131, thereby quickly completing the installation connection between the bar body 1 and the large truck.

[0054] During operation, when the lever body 1 is subjected to a large impact force, the entire lever body 1 will drive the rectangular block 44 to move backward, thereby driving the connecting rod 42 to move backward, so that the roller 49 on the connecting rod 42 slides in the arc groove 411 inside the arc block 41. At the same time, the distance between the connecting rods 42 will expand and pull the pull rope 4181 spring between the two connecting rods 42, thereby buffering the instantaneous impact force. When the two connecting rods 42 move outward to contact the inclined surface of the limit block 45, the connecting rod 42 will stop moving, and the tension spring 43 between the two connecting rods 42 stops stretching. Due to the deviation in the direction of the impact force, the lever body 1 will drive the entire rectangular block 44 and the connecting rod 42 to slide horizontally on the arc block 41, and the roller 49 on the connecting rod 42 continues to slide in one direction in the arc groove 411, thereby causing the lever body 1 to deviate to the left or right and unload the impact force to reduce the damage to the front of the large truck.

[0055] When repairing a large truck, the bar body 1 needs to be disassembled. At this time, the operator rotates the knob 4184 at the bottom of the arc plate, so that the knob 4184 drives the rotating rod 418 to rotate together, thereby wrapping the two pull ropes 4181 around the rotating rod 418. The pull ropes 4181 move and pull the two blocks 4182 to slide out of the slot 4131 and enter the rectangular slot 417. At the same time, the compression spring 4183 will be compressed. When the block 4182 completely enters the rectangular slot 417, the bar body 1 can be quickly removed, thereby realizing the rapid disassembly of the bar body 1.

[0056] The above description is merely an illustrative embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A butterfly-shaped front bumper for a large truck, characterized in that: include: A lever body (1), a mesh plate (2), a pull pin (3) and a force unloading assembly (4); the mesh plate (2) is fixedly mounted on the middle of the lever body (1), the pull pins (3) are fixedly mounted on both sides of the lever body (1), the force unloading assembly (4) is horizontally mounted on the middle of the lever body (1), and the force unloading assembly (4) is located above the pull pin (3), and the impact force applied to the lever body (1) is buffered by the force unloading assembly (4), and the lever body (1) is moved laterally to unload the force.

2. The butterfly-shaped front bumper for a large truck according to claim 1, characterized in that: The unloading assembly (4) comprises an arc block (41), a connecting rod (42), a tension spring (43), a rectangular block (44), a limit block (45), a fixing member (46) and a roller (49); the arc surface of the arc block (41) is movably mounted with two connecting rods (42), the tension spring (43) is mounted between the two connecting rods (42), the rectangular block (44) is movably mounted on one end of the two connecting rods (42) away from the arc block (41), the limit blocks (45) are fixedly mounted on both ends of the side of the rectangular block (44) close to the connecting rod (42), and the two limit blocks (45) are located between the two connecting rods ( 42), a plurality of fixing members (46) are respectively provided on the side of the rectangular block (44) away from the connecting rod (42), and the plurality of fixing members (46) are connected to the rectangular block (44) through a connecting member (461), a mounting groove (47) is provided on the side of the rectangular block (44) away from the connecting rod (42), and arc grooves (48) are respectively vertically provided at both ends of the side of the rectangular block (44) away from the connecting rod (42), and the mounting groove (47) and the arc groove (48) are both used to install and place the lever body (1), and a plurality of rollers (49) are respectively provided at one end of the connecting rod (42) close to the side of the arc block (41).

3. The butterfly-shaped front bumper for a large truck according to claim 2, characterized in that: Arc-shaped cavities (441) are provided at both ends of the rectangular block (44) on one side close to the connecting rod (42), and the limiting block (45) is located inside the arc-shaped cavity (441). The side of the limiting block (45) close to the connecting rod (42) is an inclined surface.

4. The butterfly-shaped front bumper for a large truck according to claim 2, characterized in that: One end of the connecting rod (42) away from the arc block (41) is connected to the rectangular block (44) via a fixed shaft (442), and the two connecting rods (42) are connected to the tension spring (43) via a fixed block (422).

5. The butterfly-shaped front bumper for a large truck according to claim 4, characterized in that: A circular hole (421) is formed at one end of the connecting rod (42) close to the arc block (41), and a rotating shaft (491) is provided in the circular hole (421). The top and bottom ends of the rotating shaft (491) are respectively rotatably connected to the roller (49).

6. The butterfly-shaped front bumper for a large truck according to claim 5, characterized in that: An arc-shaped slide groove (411) is provided on the arc-shaped surface of the arc-shaped block (41), and arc-shaped baffles (412) are respectively provided on the top and bottom of the arc-shaped slide groove (411).

7. A butterfly-shaped truck front bumper mounting structure, using the butterfly-shaped truck front bumper according to any one of claims 1 to 6, characterized in that: It also includes a connecting block (413) and a supporting block (414); the connecting block (413) is connected to the arc block (41), the connecting block (413) is connected to the supporting block (414), and the connecting block (413) is located between the arc block (41) and the supporting block, and the supporting block (414) is fixedly installed at the front end of the vehicle.

8. The butterfly-shaped truck front bumper mounting structure according to claim 7, characterized in that: Two slots (4131) are respectively provided on one side of the connecting block (413) close to the supporting block (414).

9. The butterfly-shaped truck front bumper mounting structure according to claim 8, characterized in that: A rectangular cavity (415) is provided in the middle of the support block (414), and two circular through holes (416) are symmetrically provided on the inner wall of the rectangular cavity (415). The two circular through holes (416) are provided with rectangular grooves (417) along the inner wall of the axis, and the rectangular grooves (417), the circular through holes (416) and the rectangular cavity (415) are interconnected.

10. The butterfly-shaped truck front bumper mounting structure according to claim 9, characterized in that: A rotating rod (418) is provided inside the rectangular cavity (415), and a knob (4184) is provided on the top of the rotating rod (418). Two pull ropes (4181) are provided on the rotating rod (418), and the two pull ropes (4181) respectively pass through the circular through holes (416). The free ends of the two pull ropes (4181) are connected to a clamping block (4182), and the clamping block (4182) cooperates with the clamping slot (4131). Compression springs (4183) are respectively provided in the two rectangular slots (417), and the two compression springs (4183) are respectively located on the inner sides of the two clamping blocks (4182).

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