A front bumper assembly for a large truck

Abstract

The present invention relates to the field of front bumper devices, specifically a front bumper assembly for a large truck, comprising a front bumper body, the front bumper body can be fitted and installed on the front side of a large truck, the back of the front bumper body is fixedly connected with a first spline shaft and four L-shaped card plates, every two of the L-shaped card plates are placed on one side of the front bumper body, and the front bumper body is slidably connected with a large ear protection mechanism in an upper limit position; a mounting plate, the mounting plate is fixedly installed on the vehicle body, one side of the mounting plate is fixedly connected with a first side plate, the first side plate is rotatably connected with a first spline shaft sleeve in an upper limit position, and the first spline shaft is limitedly slidably connected in the first spline shaft sleeve. The device can realize the step-by-step disassembly and installation of the front bumper and the large ear protection mechanism of the large truck only by rotating the spline shaft, and can make the front bumper and the large ear protection mechanism of the large truck be better installed.

Description

Technical Field

[0001] The invention relates to the field of front bumper devices, and in particular to a front bumper assembly for a large truck. Background Art

[0002] The car bumper is a safety device that absorbs and mitigates external impact and protects the front and rear parts of the car body. Many years ago, the front and rear bumpers of cars were stamped into channel steel with steel plates, riveted or welded to the longitudinal beams of the frame, and had a large gap with the car body, which looked very unsightly. With the development of the automobile industry and the extensive application of engineering plastics in the automobile industry, car bumpers, as an important safety device, have also taken the road of innovation. In addition to maintaining the original protection function, the front and rear bumpers of today's cars also pursue harmony and unity with the body shape and pursue their own lightweight. The front and rear bumpers of cars are made of plastic, which people call plastic bumpers.

[0003] We will design large ear protection mechanisms on the front bumpers of large trucks to increase protection.

[0004] Traditional car bumpers are easy to install, but not very easy to remove. They are simply snapped on during installation, but are troublesome to remove.

[0005] Furthermore, the added large ear protection mechanism also needs to be disassembled and installed, which is relatively troublesome.

[0006] In order to make it easier to disassemble and install the front bumper and the big ear protection mechanism of large trucks and save the maintenance time of maintenance technicians, a front bumper assembly of large trucks is designed, which can realize the step-by-step disassembly and installation of the front bumper and the big ear protection mechanism of large trucks only by rotating the spline shaft, and can make the front bumper and the big ear protection mechanism of large trucks be better installed. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects of the prior art. The present invention proposes a large truck front bumper assembly, which can realize the step-by-step disassembly and installation of the large truck front bumper and the large ear protection mechanism only by rotating the spline shaft, and can make the large truck front bumper and the large ear protection mechanism be better installed.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is: a front bumper assembly of a large truck, comprising:

[0009] A front bumper body, which can be fitted on the front side of a large truck, a first spline shaft and four L-shaped clips are fixedly connected to the back of the front bumper body, two of the L-shaped clips are placed on one side of the front bumper body, and a large ear protection mechanism is slidably connected to the upper limit of the front bumper body;

[0010] A mounting plate, the mounting plate is fixedly mounted on the vehicle body, one side of the mounting plate is fixedly connected to a first side plate, the first side plate is rotationally connected to a first spline shaft sleeve in a limited position, and the first spline shaft is limitedly slidably connected in the first spline shaft sleeve, so as to allow the front bumper body to rotate in a circle relative to the first side plate;

[0011] Four movable plates are arranged on the first side plate, and clamping blocks are fixedly mounted on the movable plates. The four clamping blocks cooperate with four L-shaped clamping plates respectively. A driving mechanism is arranged on the mounting plate, and the driving mechanism enables the four clamping blocks to move in an L-shape and press the L-shaped clamping plates, so that the front bumper body rotated to various angles is clamped on the front side of the vehicle body. After the driving mechanism is clamped on the front bumper body, the large ear protection mechanism mounted on the front bumper body can be clamped on the front bumper body, so that the various components of the device are easy to install and disassemble.

[0012] Preferably, the big ear protection mechanism includes two auxiliary slides, two first limit slide grooves are provided on the top of the front bumper body, the two auxiliary slides are slidably connected in the first limit slide grooves in an upper and lower limit manner, a connecting rod is fixedly connected between the two auxiliary slides, and a big ear block is fixedly connected to the sides of the two auxiliary slides away from each other.

[0013] Preferably, the driving mechanism comprises two L-shaped action mechanisms and two pushing mechanisms, and the action ends of the two L-shaped action mechanisms are connected to the moving plate;

[0014] A plurality of elastic telescopic rods are fixedly connected to one side of the front bumper body, a pressure plate is fixedly connected to one side of the plurality of elastic telescopic rods away from the front bumper body, and two clamping columns are fixedly connected to the pressure plate;

[0015] The back side of the front bumper body is provided with two second clamping holes, the two auxiliary slide plates are provided with first clamping holes, the first clamping holes can be connected with the second clamping holes, and the two clamping posts can pass through the second clamping holes and be clamped in the first clamping holes;

[0016] The pushing mechanism cooperates with the pressing plate to fix the auxiliary sliding plate.

[0017] Preferably, the L-shaped action mechanism comprises two limit plates, a first limit slider is connected between the two limit plates in a limit sliding manner, second side plates are fixedly connected to both sides of the two limit plates, the two second side plates are jointly connected to a first threaded rod in a limit rotation manner, the first limit slider is threadedly connected to an outer wall of the first threaded rod, and a first gear is fixedly connected to the outer wall of the first threaded rod;

[0018] An L-shaped groove is provided on the mounting plate, and an oblique groove is provided on the first limit sliding block. The oblique groove and the L-shaped groove cooperate with each other to slide with a matching column, and two limit retaining rings are fixedly connected to the matching column. The two limit retaining rings are respectively placed on the top of the first limit sliding block and the bottom of the mounting plate, so that the limit retaining rings can move stably in the oblique groove and the L-shaped groove, and the top and bottom of the matching column are fixedly connected with a movable plate.

[0019] Preferably, the pushing mechanism includes a second threaded rod which is rotatably limited and connected to the first side plate, the outer wall of the second threaded rod is threadedly connected to a second limit slider, the second limit slider is slidably limited and connected in a second limit slot on the mounting plate, and one side of the second limit slider is fixedly connected to a push plate, and the push plate can be squeezed against the pressure plate.

[0020] Preferably, the driving mechanism also includes a second spline shaft, the second spline shaft is limited and rotatably connected to the first side plate, the second bearing seat and the first bearing seat are fixedly connected to the mounting plate, the first bearing seat is limited and rotatably connected to the second spline shaft sleeve, the second bearing seat is limited and rotatably connected to the third spline shaft sleeve, the second spline shaft is placed in the second spline shaft sleeve and the third spline shaft sleeve and do not contact, the second spline shaft sleeve, the second spline shaft and the third spline shaft sleeve are coaxial, the outer wall of the second spline shaft is limited and slidably connected to the fourth spline shaft sleeve, the fourth spline shaft sleeve is limited and rotatably connected to the third bearing seat, the third bearing seat is limited and slidably connected to the third limiting sliding groove on the mounting plate, the third bearing seat is fixedly connected to a third threaded rod, the third threaded rod is slidably connected to the third limiting sliding groove, and the outer wall of the third threaded rod is threadedly connected to a nut, so that the third bearing seat is fixedly mounted on the mounting plate;

[0021] The outer wall of the fourth spline sleeve is provided with a plurality of spline strips distributed around its circumference. The spline strips on the outer wall of the fourth spline sleeve can be individually connected in limited position and sliding connection in the third spline sleeve, or individually connected in limited position and sliding connection in the second spline sleeve, or simultaneously connected in limited position and sliding connection in the second spline sleeve and the third spline sleeve.

[0022] The outer wall of the second spline sleeve is fixedly connected to a third gear, and the first gear and the third gear are meshed with each other;

[0023] The outer wall of the third spline sleeve is fixedly connected with a fourth gear, the outer wall of the second threaded rod is fixedly connected with a second gear, and the second gear is meshed with the fourth gear.

[0024] Preferably, it also includes a power mechanism for driving the second spline shaft to rotate.

[0025] Preferably, the power mechanism is a motor, and the output end of the motor is connected to the second spline shaft.

[0026] Preferably, the power mechanism comprises an auxiliary swing rod, a plurality of auxiliary swing rods are fixedly connected to the outer wall of the second spline shaft near one end, and a clamping mechanism for fixing the second spline shaft to the first side plate is provided.

[0027] Preferably, the fixing mechanism includes an annular disk, which is fixedly mounted on the outer wall of the second spline shaft, and has a plurality of circular holes distributed circumferentially on the annular disk, and a plurality of threaded holes distributed circumferentially on the first side plate, and the axes of the plurality of threaded holes are coaxial with the axis of the annular disk, and the circular holes and threaded holes cooperate with the first screw to fix the annular disk on the first side plate.

[0028] Compared with the prior art, the beneficial effects of the present invention include:

[0029] When the device is installing the front bumper body, the first spline shaft can be engaged in the first spline shaft sleeve, so that when the front bumper body is initially installed on the large truck, it can be rotated in a circle when it is installed on the large truck, so that the front bumper body can be more easily installed on the front side of the large truck; the four movable plates and the clamping blocks move in an L-shape, and the four L-shaped clamping plates are clamped to enable the front bumper body to be installed on the front side of the large truck, and when the front bumper body is not of very good size or has slight deformation, the front bumper body can be rotated at a certain angle, and the four movable plates and the clamping blocks can still clamp the four L-shaped clamping plates and push , so that the front bumper body can be better installed on the front side of the large truck; the set push plate can clamp the big ear protection mechanism that follows the front bumper body to swing at a certain angle, so that the big ear protection mechanism is better clamped; only the second spline shaft needs to be kept stationary to make the front bumper body and the big ear protection mechanism stably installed on the front side of the large truck, which relatively saves costs and facilitates personnel operations; the big ear protection mechanism and the front bumper body can be disassembled and installed separately, and disassembly and assembly are convenient, so that the device can be better operated and is convenient for maintenance by mechanics, and has a good market promotion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The disclosure of the present invention is described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the accompanying drawings, the same reference numerals are used to refer to the same components. Among them:

[0031] Figure 1 A schematic diagram of the axial structure of the device according to the present invention at a first viewing angle is shown;

[0032] Figure 2 A schematic diagram of the top view of the structure of the device according to the present invention is shown;

[0033] Figure 3 The device according to the present invention is shown Figure 2 Schematic diagram of the upper enlarged structure;

[0034] Figure 4 The device according to the present invention is shown Figure 3 A schematic diagram of the enlarged structure at point A;

[0035] Figure 5 The device according to the present invention is shown Figure 3 A schematic diagram of the enlarged structure at B;

[0036] Figure 6 The device according to the present invention is shown Figure 5 A schematic diagram of the enlarged structure at C;

[0037] Figure 7 A schematic side view of the structure of the first side plate according to the present invention is shown;

[0038] Figure 8 A schematic diagram of the side view of the circular ring disk according to the present invention is shown;

[0039] Fig. 9 A rear structural schematic diagram of a front bumper body according to the present invention is shown;

[0040] Fig.10 A schematic structural diagram of a large ear protection mechanism according to the present invention is shown.

[0041] Numbers in the figure: 1, front bumper body; 2, first limit slide; 3, big ear block; 4, auxiliary slide; 5, connecting rod; 6, mounting plate; 7, first side plate; 8, first spline shaft sleeve; 9, first spline shaft; 10, pressure plate; 11, L-shaped card plate; 12, elastic telescopic rod; 13, card block; 14, moving plate; 15, card column; 16, limit plate; 17, first limit slide block; 18, second side plate; 19, first threaded rod; 20, limit retaining ring; 21, L-shaped groove; 22, inclined groove; 23, matching column; 24, first gear; 25, second spline shaft Key shaft; 26, auxiliary swing rod; 27, ring disk; 28, first screw; 29, second limit slider; 30, push plate; 31, second limit slide groove; 32, second threaded rod; 33, second gear; 34, first bearing seat; 35, second spline sleeve; 36, third gear; 37, third limit slide groove; 38, fourth gear; 39, second bearing seat; 40, third spline sleeve; 41, third threaded rod; 42, third bearing seat; 43, threaded hole; 44, round hole; 45, second clamping hole; 46, first clamping hole; 47, fourth spline sleeve. DETAILED DESCRIPTION

[0042] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the whole of the present invention or as a limitation or restriction to the technical solution of the present invention.

[0043] Embodiment 1:

[0044] Key References Figure 1 and Figure 2 The device mainly includes a front bumper body 1, a mounting plate 6, and a first side plate 7.

[0045] The front bumper body 1 is a shell having the same shape as the front side of a large truck, and is used to fit on the front side of the large truck. The edge of the shell has no buckles, and the edge buckles do not need to be snapped on the front side of the large truck during installation. The device is easy to install and remove. The front bumper body 1 can fit on the front side of a large truck.

[0046] A first spline shaft 9 is fixedly connected to the back side of the front bumper body 1 .

[0047] The back side of the mounting plate 6 is fixedly connected with the first side plate 7 , and the mounting plate 6 and the first side plate 7 are fixedly mounted on the front side of the vehicle body.

[0048] The front side of the first side plate 7 is connected to the first spline sleeve 8 in a limited rotation manner, and the first spline shaft 9 is connected to the first spline sleeve 8 in a limited sliding manner.

[0049] Four L-shaped pallets 11 are fixedly connected to the back of the front bumper body 1, and every two of the L-shaped pallets 11 are placed on one side of the front bumper body 1, the two L-shaped pallets 11 on the left are arranged in parallel, and the two L-shaped pallets 11 on the right are also arranged in parallel, and the four L-shaped pallets 11 form a rectangular shape.

[0050] Key References Figure 4 and Figure 5 Two limit plates 16 are fixedly connected to the left and right sides of the mounting plate 6, and a first limit slider 17 is connected to the front and rear limit sliding connection between each two limit plates 16. Second side plates 18 are fixedly connected to both sides of the two limit plates 16, and the two second side plates 18 are jointly connected to a first threaded rod 19 for limited rotation. The first limit slider 17 is threadedly connected to the outer wall of the first threaded rod 19, and the outer wall of the first threaded rod 19 is also fixedly connected to the first gear 24.

[0051] Key References Figure 4The mounting plate 6 is provided with two L-shaped grooves 21, and each L-shaped groove 21 is placed between two limit plates 16. The first limit slider 17 is provided with an oblique groove 22, and the oblique groove 22 and the L-shaped groove 21 are slidably matched with a matching column 23, and two limit retaining rings 20 are fixedly connected to the matching column 23. The two limit retaining rings 20 are respectively placed on the top of the first limit slider 17 and the bottom of the mounting plate 6, so that the limit retaining rings 20 can stably move in the oblique groove 22 and the L-shaped groove 21. The top and bottom of the matching column 23 are fixedly connected to the moving plate 14, and the front side of the moving plate 14 is fixedly connected to the clamping block 13.

[0052] The four clamping blocks 13 all move in an L-shaped motion, so that the four clamping blocks 13 first move to the engaging position of the L-shaped clamping plate 11, and then move backward, driving the four L-shaped clamping plates 11 and the front bumper body 1 to move toward the front side of the large truck, so that the front bumper body 1 fits the front side of the large truck, completing the installation of the front bumper body 1, and during installation, the front bumper body 1 can be rotated so that the front bumper body 1 is better installed. When the front bumper body 1 is slightly deformed, the front bumper body 1 can be manually leveled. When the front bumper body 1 is still slightly bent, the front bumper body 1 that rotates in a circle and moves back and forth can slightly adjust its position, so that the front bumper body 1 fits the front side of the large truck to protect the large truck, and the front bumper body 1 has good compatibility, saves replacement costs, and is easy to use.

[0053] Embodiment 2: Based on Embodiment 1, a simpler technical means for assembling and disassembling the big ear protection mechanism is added.

[0054] This embodiment mainly includes an auxiliary slide plate 4 , a large ear block 3 , and a connecting rod 5 .

[0055] Key References Figure 1 Two first limit slide grooves 2 are provided at the top of the front bumper body 1, and the two auxiliary slide plates 4 are connected in the first limit slide grooves 2 by sliding in an upper and lower limit manner. Two connecting rods 5 are fixedly connected between the two auxiliary slide plates 4, and the two connecting rods 5 are placed on the top of the front bumper body 1. The two auxiliary slide plates 4 are fixedly connected with large ear blocks 3 on the sides away from each other, and the two large ear blocks 3 are also placed on the top of the front bumper body 1.

[0056] Key References Figure 2 and Figure 3 The back of the front bumper body 1 is fixedly connected with a plurality of elastic telescopic rods 12, and a pressure plate 10 is fixedly connected to the side of the plurality of elastic telescopic rods 12 away from the front bumper body 1, so that the pressure plate 10 can move horizontally forward and backward. Two clamping columns 15 are fixedly connected to the pressure plate 10;

[0057] Two second clamping holes 45 are provided on the back side of the front bumper body 1, and first clamping holes 46 are provided on the two auxiliary slides 4. When the auxiliary slides 4 are placed at the bottom of the first limiting slide groove 2, the first clamping holes 46 are connected with the second clamping holes 45, and the two clamping columns 15 can pass through the second clamping holes 45 and be engaged in the first clamping holes 46.

[0058] Key References Figure 3 and Figure 5 The front side plate 7 is connected to the second threaded rod 32 for limited rotation, and the mounting plate 6 is also fixedly connected to the auxiliary plate. The other end of the second threaded rod 32 is connected to the auxiliary plate for limited rotation. The outer wall of the second threaded rod 32 is threadedly connected to the second limit slider 29, and the second limit slider 29 is connected to the second limit slide groove 31 on the mounting plate 6 for limited sliding. A push plate 30 is fixedly connected to one side of the second limit slider 29, and the push plate 30 moves forward to press against the pressing plate 10.

[0059] Key References Figure 5 and Figure 6 The first side plate 7 is connected to the second spline shaft 25 in an upper limit rotational connection, the second bearing seat 39 and the first bearing seat 34 are fixedly connected to the mounting plate 6, the first bearing seat 34 is connected to the second spline shaft sleeve 35 in a limited rotational connection, the second bearing seat 39 is connected to the third spline shaft sleeve 40 in a limited rotational connection, the second spline shaft 25 is placed in the second spline shaft sleeve 35 and the third spline shaft sleeve 40 without contact, the second spline shaft sleeve 35, the second spline shaft 25, and the third spline shaft sleeve 40 are coaxial, the first The outer wall of the second spline shaft 25 is limitedly slidably connected with a fourth spline sleeve 47, the fourth spline sleeve 47 is limitedly rotatably connected in the third bearing seat 42, the third bearing seat 42 is limitedly slidably connected in the third limiting sliding groove 37 on the mounting plate 6, the third bearing seat 42 is fixedly connected with a third threaded rod 41, the third threaded rod 41 is slidably connected in the third limiting sliding groove 37, the outer wall of the third threaded rod 41 is threadedly connected with a nut, so that the third bearing seat 42 is fixedly mounted on the mounting plate 6;

[0060] The fourth spline bushing 47 is disposed between the second spline bushing 35 and the third spline bushing 40 .

[0061] The outer wall of the fourth spline sleeve 47 is provided with a plurality of spline strips distributed around its circumference. The spline strips on the outer wall of the fourth spline sleeve 47 can be individually limited and slidably connected in the third spline sleeve 40 or individually limited and slidably connected in the second spline sleeve 35 or simultaneously limited and slidably connected in the second spline sleeve 35 and the third spline sleeve 40.

[0062] A third gear 36 is fixedly connected to the outer wall of the second spline sleeve 35 , and the first gear 24 and the third gear 36 are meshed with each other.

[0063] The outer wall of the third spline sleeve 40 is fixedly connected with a fourth gear 38 , the outer wall of the second threaded rod 32 is fixedly connected with a second gear 33 , and the second gear 33 and the fourth gear 38 are meshed with each other.

[0064] Key References Figure 3 , Figure 4 , Figure 5 and Figure 6 When the spline strip on the outer wall of the fourth spline sleeve 47 can be independently limited and slidably connected in the third spline sleeve 40, the second spline shaft 25 is rotated to drive the fourth gear 38 and the second gear 33 to rotate, so that the push plate 30 squeezes the pressure plate 10 or releases the pressure plate 10, completing the disassembly and installation of the big ear.

[0065] The spline strip on the outer wall of the fourth spline sleeve 47 is independently limited and slidably connected in the second spline sleeve 35, and the second spline shaft 25 is rotated to drive the third gear 36 and the first gear 24 to rotate, thereby driving the block 13 and the movable plate 14 to make an L-shaped movement to fit and fix the front bumper body 1 on the large truck.

[0066] When the spline strips on the outer wall of the fourth spline sleeve 47 are simultaneously limitedly slidably connected in the second spline sleeve 35 and the third spline sleeve 40, the second spline shaft 25 is fixed at this time, so that the front bumper body 1 deflected to a variety of preset angles can be stably installed on the front side of the large truck, and the large ear protection mechanism can be stably installed on the front bumper body 1.

[0067] The other structures are the same as those of the first embodiment.

[0068] Embodiment 3: Based on Embodiment 2, a technical means is added to enable the second spline shaft 25 to rotate better.

[0069] Two embodiments are provided to enable better rotation of the second spline shaft 25 .

[0070] The first method is to connect two motors to the output ends of the two second spline shafts 25 so that the two second spline shafts 25 rotate simultaneously.

[0071] Second: Key reference Figure 5 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 A plurality of auxiliary swing rods 26 are fixedly connected to the outer wall of the second spline shaft 25 near one end, and a circular ring disk 27 is fixedly installed on the outer wall of the second spline shaft 25. A plurality of circular holes 44 are distributed circumferentially on the circular ring disk 27, and a plurality of threaded holes 43 are distributed circumferentially on the first side plate 7. The axes of the plurality of threaded holes 43 are coaxial with the axis of the circular ring disk 27. The circular holes 44, the threaded holes 43 cooperate with the first screws 28 to fix the circular ring disk 27 on the first side plate 7.

[0072] The other structures are the same as those in the second embodiment.

[0073] In this embodiment, the mounting plate 6 and the first side plate 7 are first mounted on the front side of the truck, and the first spline shaft 9 on the front bumper body 1 is engaged in the first spline shaft sleeve 8. At this time, the front bumper body 1 can rotate relative to the front bumper body 1 in a circle, and is initially mounted on the truck. At this time, the rotatable front bumper body 1 can make the front bumper body 1 better adjusted and installed on the truck.

[0074] Then, the nut on the third threaded rod 41 is loosened to release the effect of the third bearing seat 42 being fixedly mounted on the mounting plate 6. At this time, the position of the third bearing seat 42 is moved so that the spline strip on the outer wall of the third threaded rod 41 is independently limited and slidably connected in the second spline sleeve 35.

[0075] At this time, the two second spline shafts 25 are rotated at the same time, so that the second spline shafts 25 drive the fourth spline shaft sleeve 47, the second spline shaft sleeve 35, the third gear 36, the first gear 24, and the first threaded rod 19 to rotate. At this time, the first limit slider 17 under the thread cooperation of the first threaded rod 19 and its own limit moves backward. Under the cooperation of the inclined groove 22 and the L-shaped groove 21, the matching column 23, the movable plate 14, and the clamping block 13 move in an L-shaped manner. The movable plate 14 is first engaged with the L-shaped clamping plate 11, and then the four L-shaped clamping plates 11 are pushed to move toward the front side of the large truck, so that the front bumper body 1 is installed on the large truck. At this time, if the front bumper body 1 is slightly deformed or the front bumper body 1 is not very matched, the front bumper body 1 can be rotated at a certain angle, and then the front bumper body 1 is made to fit the front side of the large truck, so that the front bumper body 1 can have better compatibility and be installed on the front side of the large truck.

[0076] After the front bumper body 1 is installed, the two auxiliary slide plates 4 are slidably connected in the two first limiting slide grooves 2 at the top of the front bumper body 1. At this time, the position of the third bearing seat 42 is moved so that the spline strips on the outer wall of the third threaded rod 41 are separately limited and slidably connected in the third spline sleeve 40.

[0077] At this time, the two second spline shafts 25 are rotated at the same time, and the rotating second spline shaft 25 drives the fourth spline shaft sleeve 47, the third spline shaft sleeve 40, the fourth gear 38, the second gear 33, and the second threaded rod 32 to rotate, and the second limit slider 29 moves forward and backward under the thread and limit. At this time, the second limit slider 29 and the push plate 30 move forward, and the push plate 30 presses the pressure plate 10 so that the clamping column 15 is clamped in the second clamping hole 45 and the first clamping hole 46, so that the big ear protection mechanism is stably fixed. And the big ear protection mechanism that follows the front bumper body 1 to rotate to various angles can be clamped by the second limit slider 29 and the push plate 30 that move forward, so that the big ear protection mechanism can be better and more compatible. When disassembling, just reverse the second spline shaft 25.

[0078] When the front bumper body 1 and the big ear protection mechanism are both installed in the required positions, the third bearing seat 42 is moved so that the spline strips on the outer wall of the third threaded rod 41 are simultaneously limitedly slidably connected in the third spline sleeve 40 and the second spline sleeve 35. At this time, the nut on the third threaded rod 41 is tightened so that the third bearing seat 42 is stably installed on the mounting plate 6.

[0079] At this time, no matter whether the motor is used to control the second spline shaft 25 or the screw locking of the annular disk 27 and the first screw 28, the second spline shaft 25 can be kept stationary, so that the device can be kept in a stable state.

[0080] The technical scope of the present invention is not limited to the contents in the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A front bumper assembly for a large truck, characterized in that: include: A front bumper body (1) can be fitted and installed on the front side of a large truck, a first spline shaft (9) and four L-shaped clips (11) are fixedly connected to the back of the front bumper body (1), two of the L-shaped clips (11) are placed on one side of the front bumper body (1), and an upper limit sliding connection of the front bumper body (1) is provided with a large ear protection mechanism; A mounting plate (6), the mounting plate (6) being fixedly mounted on the vehicle body, a first side plate (7) being fixedly connected to one side of the mounting plate (6), a first spline shaft sleeve (8) being rotatably connected to the first side plate (7) in a limited position, and the first spline shaft (9) being slidably connected to the first spline shaft sleeve (8) in a limited position, so as to enable the front bumper body (1) to rotate in a circle relative to the first side plate (7); Four movable plates (14) are arranged on the first side plate (7), and a clamping block (13) is fixedly mounted on the movable plate (14). The four clamping blocks (13) respectively cooperate with the four L-shaped clamping plates (11). A driving mechanism is arranged on the mounting plate (6), and the driving mechanism causes the four clamping blocks (13) to move in an L-shape and press the L-shaped clamping plates (11), so that the front bumper body (1) rotated to various angles is clamped on the front side of the vehicle body. After being clamped on the front bumper body (1), the driving mechanism can clamp the large ear protection mechanism installed on the front bumper body (1) on the front bumper body (1), so that the components of the device are easy to install and disassemble.

2. A large truck front bumper assembly according to claim 1, characterized in that: The big ear protection mechanism comprises two auxiliary slides (4), two first limit slide grooves (2) are provided on the top of the front bumper body (1), the two auxiliary slides (4) are slidably connected in the first limit slide grooves (2) in an upper and lower limit manner, a connecting rod (5) is fixedly connected between the two auxiliary slides (4), and a big ear block (3) is fixedly connected to the sides of the two auxiliary slides (4) that are away from each other.

3. A front bumper assembly for a large truck according to claim 2, characterized in that: The driving mechanism comprises two L-shaped action mechanisms and two pushing mechanisms, and the action ends of the two L-shaped action mechanisms are connected to the moving plate (14); A plurality of elastic telescopic rods (12) are fixedly connected to one side of the front bumper body (1), a pressure plate (10) is fixedly connected to one side of the plurality of elastic telescopic rods (12) away from the front bumper body (1), and two clamping columns (15) are fixedly connected to the pressure plate (10); The back side of the front bumper body (1) is provided with two second clamping holes (45), and the two auxiliary slide plates (4) are provided with first clamping holes (46), the first clamping holes (46) can be connected with the second clamping holes (45), and the two clamping columns (15) can pass through the second clamping holes (45) and be clamped in the first clamping holes (46); The pushing mechanism cooperates with the pressing plate (10) to fix the auxiliary sliding plate (4).

4. A front bumper assembly for a large truck according to claim 3, characterized in that: The L-shaped action mechanism comprises two limit plates (16), a first limit slider (17) is connected between the two limit plates (16) in a limit sliding manner, second side plates (18) are fixedly connected to both sides of the two limit plates (16), the two second side plates (18) are jointly connected to a first threaded rod (19) in a limit rotation manner, the first limit slider (17) is threadedly connected to the outer wall of the first threaded rod (19), and the outer wall of the first threaded rod (19) is fixedly connected to a first gear (24); The mounting plate (6) is provided with an L-shaped groove (21), the first limiting slider (17) is provided with an inclined groove (22), the inclined groove (22) and the L-shaped groove (21) are slidably matched with a matching column (23), and two limiting retaining rings (20) are fixedly connected to the matching column (23), and the two limiting retaining rings (20) are respectively placed on the top of the first limiting slider (17) and the bottom of the mounting plate (6), so that the limiting retaining rings (20) can stably move in the inclined groove (22) and the L-shaped groove (21), and the top and bottom of the matching column (23) are fixedly connected with a movable plate (14).

5. A front bumper assembly for a large truck according to claim 4, characterized in that: The pushing mechanism comprises a second threaded rod (32) connected to the first side plate (7) in a limited rotational manner, the outer wall of the second threaded rod (32) is threadedly connected to a second limit slider (29), the second limit slider (29) is limitedly slidably connected to a second limit slide groove (31) on the mounting plate (6), one side of the second limit slider (29) is fixedly connected to a push plate (30), and the push plate (30) can be pressed against the pressure plate (10).

6. A front bumper assembly for a large truck according to claim 5, characterized in that: The driving mechanism further comprises a second spline shaft (25), the second spline shaft (25) is connected to the first side plate (7) in a limited rotation manner, the second bearing seat (39) and the first bearing seat (34) are fixedly connected to the mounting plate (6), the first bearing seat (34) is connected to a second spline shaft sleeve (35) in a limited rotation manner, the second bearing seat (39) is connected to a third spline shaft sleeve (40) in a limited rotation manner, the second spline shaft (25) is placed in the second spline shaft sleeve (35) and the third spline shaft sleeve (40) and does not contact each other, the second spline shaft sleeve (35), the second spline shaft (25) and the third spline shaft sleeve (40) are fixedly connected to the mounting plate (6), the second spline shaft sleeve (35) and the third spline shaft sleeve (40) are fixedly connected to the mounting plate (6), the second spline shaft sleeve (39 ... 0) coaxially, the outer wall of the second spline shaft (25) is limitedly slidably connected with a fourth spline sleeve (47), the fourth spline sleeve (47) is limitedly rotatably connected in the third bearing seat (42), the third bearing seat (42) is limitedly slidably connected in the third limiting sliding groove (37) on the mounting plate (6), the third bearing seat (42) is fixedly connected with a third threaded rod (41), the third threaded rod (41) is slidably connected in the third limiting sliding groove (37), the outer wall of the third threaded rod (41) is threadedly connected with a nut, so that the third bearing seat (42) is fixedly mounted on the mounting plate (6); A plurality of spline strips are distributed on the circumference of the outer wall of the fourth spline sleeve (47), and the spline strips on the outer wall of the fourth spline sleeve (47) can be individually connected to the third spline sleeve (40) by limiting sliding, or individually connected to the second spline sleeve (35) by limiting sliding, or simultaneously connected to the second spline sleeve (35) and the third spline sleeve (40) by limiting sliding; The outer wall of the second spline sleeve (35) is fixedly connected with a third gear (36), and the first gear (24) and the third gear (36) are meshed with each other; The outer wall of the third spline sleeve (40) is fixedly connected to a fourth gear (38), the outer wall of the second threaded rod (32) is fixedly connected to a second gear (33), and the second gear (33) and the fourth gear (38) are meshed with each other.

7. A front bumper assembly for a large truck according to claim 6, characterized in that: It also includes a power mechanism for driving the second spline shaft (25) to rotate.

8. The front bumper assembly of a large truck according to claim 7, characterized in that: The power mechanism is a motor, and the output end of the motor is connected to the second spline shaft (25).

9. The front bumper assembly of a large truck according to claim 7, characterized in that: The power mechanism comprises an auxiliary swing rod (26), a plurality of auxiliary swing rods (26) are fixedly connected to the outer wall of the second spline shaft (25) near one end, and a clamping mechanism for fixing the second spline shaft (25) to the first side plate (7) is provided on the second spline shaft (25).

10. A front bumper assembly for a large truck according to claim 9, characterized in that: The fixing mechanism comprises a circular ring disk (27), wherein the circular ring disk (27) is fixedly mounted on the outer wall of the second spline shaft (25), wherein a plurality of circular holes (44) are distributed circumferentially on the circular ring disk (27), and a plurality of threaded holes (43) are distributed circumferentially on the first side plate (7), wherein the axes of the plurality of threaded holes (43) are coaxial with the axis of the circular ring disk (27), and the circular holes (44), the threaded holes (43) and the first screws (28) cooperate to fix the circular ring disk (27) on the first side plate (7).

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