An impact-resistant pickup truck rear bumper frame assembly and its manufacturing and adjustment methods

Abstract

The present invention discloses an impact-resistant pickup truck rear bumper frame assembly and a manufacturing method and an adjustment method thereof, comprising a connecting platform, a magnetic mounting frame fixedly mounted on the bottom end of the connecting platform, two mounting mechanisms slidably connected to the middle portion of the magnetic mounting frame, a frame member provided on the top end of the connecting platform, bumper bodies slidably connected at both ends of the frame member, and anti-impact mechanisms fixedly mounted on the top ends of the two bumper bodies. The present invention arranges the mounting mechanism, and the bumper frame assembly is mounted on the pickup truck through a fixing plate. When the pickup truck is bumpy, the return spring and the shock absorber body buffer the generated bumping force, thereby avoiding the resonance of the bumper frame assembly and ensuring the normal use of the pickup truck rear bumper frame assembly; by arranging the shock absorbing mechanism and the anti-impact mechanism, the anti-impact mechanism and the shock absorbing mechanism buffer the impact force received in turn, thereby improving the impact resistance of the bumper frame itself.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts, in particular to an impact-resistant pickup truck rear bumper frame assembly and a manufacturing method and an adjustment method thereof. Background Art

[0002] The pickup truck's rear bumper frame assembly, located in the majority of the vehicle's rear area, is ostensibly designed to protect the vehicle's safety systems from the effects of external damage. It also minimizes driver and passenger injuries in high-speed collisions. As a critical safety component, the bumper absorbs external impacts and protects the front and rear of the vehicle. It primarily consists of a plastic bumper, cushioning material, and a crossbeam. The plastic bumper not only provides strength and rigidity but also boasts excellent decorative properties. In the event of a collision, it effectively cushions the impact and protects the vehicle from serious damage. Furthermore, the bumper's smooth integration with the vehicle enhances the vehicle's overall aesthetic.

[0003] However, the traditional pickup truck rear bumper frame assembly has the following disadvantages:

[0004] The traditional pickup truck rear bumper frame assembly is installed on the pickup truck. When the pickup truck is driving on a bumpy road, the pickup truck rear bumper frame assembly is prone to resonate with the driving pickup truck, causing loosening at the installation location or the pickup truck rear bumper frame assembly to shake up and down, causing unnecessary collisions, affecting the normal use of the pickup truck rear bumper frame assembly. Summary of the Invention

[0005] The purpose of the present invention is to provide an impact-resistant pickup truck rear bumper frame assembly and a manufacturing method and an adjustment method thereof, so as to solve the problem proposed in the above background technology that the traditional pickup truck rear bumper frame assembly is installed on a pickup truck. When the pickup truck travels on a bumpy road section, the pickup truck rear bumper frame assembly is prone to resonate with the driving pickup truck, resulting in loosening of the installation position or the pickup truck rear bumper frame assembly shaking up and down, resulting in unnecessary collisions, which affects the normal use of the pickup truck rear bumper frame assembly.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an impact-resistant pickup truck rear bumper frame assembly, comprising a connecting platform, a magnetic mounting frame fixedly mounted on the bottom end of the connecting platform, two mounting mechanisms slidably connected to the middle of the magnetic mounting frame, a frame member provided on the top end of the connecting platform, bumper bodies slidably connected at both ends of the frame member, anti-impact mechanisms fixedly mounted on the top ends of the two bumper bodies, shock-absorbing mechanisms installed on the bottom ends of the two bumper bodies, both mounting mechanisms comprising a magnetic displacement block and two limit plates, a fixed plate provided on the bottom end of the magnetic displacement block, both sides of the top end of the fixed plate being fixedly connected to the bottom ends of the two limit plates respectively, and both anti-impact mechanisms comprising a length plate and a silicone block, the length plate The top of the plate is fixedly connected to the bottom of the silicone block, and the bottom end of the length plate is provided with two height frames. The two shock-absorbing mechanisms include a mounting platform and an angle seat. The top of the mounting platform is fixedly installed with an angle seat, and the internal rotation of the angle seat is connected with an extension plate. The top of the extension plate is slidably connected to the limiting shell. A shock-absorbing spring is installed at the height between the extension plate and the limiting shell. The magnetic displacement block slides along the magnetic mounting frame to adjust the installation position of the mounting mechanism. When the pickup truck is bumpy, the bump force drives the fixed plate to bump from one side, and the fixed plate squeezes the reset spring from one side. The reset spring is elastic, and the reset spring undergoes elastic deformation to buffer the extrusion force, and the shock absorber body buffers the deformation force generated by the reset spring to avoid resonance of the bumper.

[0007] As a preferred technical solution of the present invention, threaded holes are provided at the four corners of the top of the fixing plate, and the user screws through the threaded holes to fix the fixing plate.

[0008] As a preferred technical solution of the present invention, a shock absorber body is fixedly installed in the middle of the top end of the fixed plate, and the top end of the shock absorber body is fixedly connected to the middle of the bottom end of the magnetic displacement block. Two return springs are fixedly installed on the fixed plate and are respectively located on both sides of the shock absorber body. The top ends of the two return springs are fixedly connected to the side opposite to the magnetic displacement block. The magnetic displacement block is slidably connected to the magnetic mounting frame, and the magnetic displacement block slides along the magnetic mounting frame to adjust the position of the mounting mechanism.

[0009] As an optimal technical solution of the present invention, the middle parts of the two height frames are slidably connected with sliding blocks, and a translation plate is fixedly installed between the two sliding blocks. Both sides of the top of the translation plate are rotatably connected with pushing rods, and the tops of the two pushing rods are installed with synchronization blocks, and the tops of the two synchronization blocks are fixedly installed with pulleys. The two pulleys are slidably connected to the length plate, and a spring shock absorber is fixedly installed between the two pushing rods. When external force collides with the anti-impact mechanism, the length plate moves toward the direction close to the bumper body, and the pulley slides along the length plate. During the sliding process of the pulley, the synchronization block is driven to push the push rod to deflect at an angle along the translation plate, and the translation plate drives the sliding block to slide along the height frame, and the spring shock absorber buffers the generated deformation force and impact force.

[0010] As a preferred technical solution of the present invention, the bottom ends of the two height frames are fixedly connected to the side facing the bumper body, and the anti-impact mechanism is installed on the bumper body through the height frames.

[0011] As a preferred technical solution of the present invention, the top ends of the two limiting shells are connected to the side facing the bumper body, the bottom ends of the two mounting platforms are fixedly connected to the side facing the connecting platform, the shock absorbing mechanism is installed on the bumper body through the limiting shells, and the shock absorbing mechanism is installed on the connecting platform through the mounting platform.

[0012] As a preferred technical solution of the present invention, an assembly platform is fixedly installed in the middle of the top of the connecting platform, and connecting seats are fixedly installed on both sides of the top of the assembly platform. Telescopic rods are rotatably connected to the inside of the two connecting seats, and the fixed ends of the two telescopic rods are respectively connected to the opposite sides of the two bumper bodies. The connecting platform is installed on the bumper body through the telescopic rods and the assembly platform. The bumper body slides relative to the frame member, and the telescopic rods perform telescopic and deflection movements to increase the sliding stability of the bumper body.

[0013] The present invention provides a method for manufacturing an impact-resistant pickup truck rear bumper frame assembly, comprising the following steps:

[0014] Step 1: Specification and material design: Conduct preliminary design of the exterior according to the pickup truck model and select impact-resistant materials;

[0015] Step 2: Mold setting: Prepare the corresponding top mold and bottom mold according to the model design;

[0016] Step 3: Product preparation: The selected material is injected between the top mold and the bottom mold for cutting, stamping and forming, and the product is obtained after cooling and demoulding;

[0017] Step 4: Surface treatment: The formed product is surface-grinded and polished using polishing and grinding equipment.

[0018] A method for adjusting the impact-resistant pickup truck rear bumper frame assembly was invented. By deploying a sensor network to monitor the bumper's operating status in real time and introducing an intelligent algorithm for data analysis and processing, the method achieves adaptive adjustment of the bumper, ensuring optimal performance under various road conditions. The specific steps are as follows:

[0019] 1. Sensor Layout

[0020] Sensors are placed at key locations on the bumper frame to monitor the vehicle's driving status and the stress changes of the bumper in real time;

[0021] Sensor type: accelerometer, strain gauge, displacement sensor

[0022] Sensor placement: Sensors are placed at the four corners, center, and near the shock absorber of the bumper frame.

[0023] 2. Data Collection and Preprocessing

[0024] Sensor variables:

[0025] Acceleration data

[0026] Strain data

[0027] For displacement data

[0028] Data preprocessing:

[0029] Filter and reduce noise on the collected data;

[0030] 3. Feature Extraction

[0031] Mean and variance of acceleration:

[0032] ;

[0033] ;

[0034] in, is the mean acceleration, which is in the time period The average acceleration of all sampling points within; is the total number of sampling points; is the acceleration value sampled at time t; is the acceleration variance, which is in the time period The degree of variation of internal acceleration values;

[0035] Mean and variance of strain:

[0036] ;

[0037] ;

[0038] in, is the mean strain, which is the time period The average strain of all sampling points within; is the total number of sampling points; is the strain value sampled at time t; is the strain variance, which is the variance in the time period The degree of variation of internal strain values;

[0039] Mean and variance of the displacement:

[0040] ;

[0041] ;

[0042] in, is the mean displacement, which is in the time period The average displacement of all sampling points in ; is the total number of sampling points; is the displacement value sampled at time t; is the displacement variance, which is in the time period the degree of variability in internal displacement values;

[0043] The extracted feature vector:

[0044] ;

[0045] in, is the eigenvector;

[0046] 4. Adaptive reinforcement learning model based on proximal policy optimization algorithm

[0047] 1. State definition

[0048] The feature vector at the current moment

[0049] ;

[0050] in, is the state space vector;

[0051] 2. Action Definition

[0052] Action Space:

[0053] ;

[0054] in, is the action space vector; is the damping coefficient of the shock absorber; is the return spring stiffness

[0055] 3. Reward Function

[0056] Give rewards or penalties based on the working condition of the bumper;

[0057] ;

[0058] in, The reward function is used to evaluate the effect of the current action and give rewards or penalties according to the working status of the bumper; is the weight coefficient of acceleration; is the weight coefficient of strain; is the weight coefficient of displacement;

[0059] 4. Policy Network

[0060] Use proximal policy optimization algorithms to learn the optimal policy and select actions To maximize future rewards;

[0061] (1) Strategy function

[0062] The probability distribution of the policy network output action:

[0063] ;

[0064] in, is the policy network parameter The policy function under are the parameters of the policy network; For the moment The action of choice; For the moment The state of the selection; For a given state Next, the policy network outputs the action The probability distribution of

[0065] (2) Advantage function

[0066] The advantage function measures the advantage of a particular state-action pair:

[0067] ;

[0068] in, Indicates that in the strategy Advantage function value under ; Indicates that in the strategy Next Value function; Value Function In a given strategy Next, from the state Take action Expected cumulative rewards to be obtained after Indicates that in the strategy The value function under In a given strategy Next, from the state Initially, the average of the expected cumulative rewards after taking all possible actions;

[0069] ;

[0070] in, represents the expected value operation, which is used to calculate the average value of a random variable; Indicates that from the time step The cumulative reward for all future time steps starts from time step Start at all time steps in the future; Represents the discount factor of power; discount factor Controls the importance of future rewards, with a value between 0 and 1; Indicates that at time step Instant rewards received; Indicates that in a given initial state and initial action , calculate the expected value of future cumulative rewards;

[0071] ;

[0072] Indicates that in the strategy Next, for action expected value; Represents all possible actions; Indicates the slave state Initially, the expected value of the cumulative reward for all future time steps; this expected value is obtained by calculating the value of each future reward According to the discount factor Obtained by weighted calculation;

[0073] (3) Objective function

[0074] The proximal policy optimization algorithm updates the policy network by optimizing the following objective function

[0075] ;

[0076] ;

[0077] in, is the objective function used to optimize the parameters of the policy network by minimizing ; Represents the time step Perform expectation operation, which represents the average over multiple time steps; Indicates taking the minimum of two values ​​to ensure the stability of the objective function; Indicates the strategy ratio, which means the new strategy and the old strategy are in the state Next select action The probability ratio of are the old parameters of the policy network; represents the old strategy under the old parameters; represents the advantage function under the old strategy; is the advantage function, which means that in the state Next, select Action Advantages over other actions; Represents the Q-value function under the old strategy; represents the value function under the old policy; is the clipping function, which limits the policy ratio to the interval To prevent the policy update from being too large; It is a hyperparameter for clipping the range and is usually set to a small value;

[0078] (4) Update strategy network

[0079] ;

[0080] in, The learning rate is a hyperparameter that controls the step size of each parameter update and determines the speed of the update; Represents the policy network parameters About loss function gradient;

[0081] (5) Value function update

[0082] The value function is updated by minimizing the following loss function:

[0083] ;

[0084] in, is the loss function of the value function, and the parameters of the value function network are updated by minimizing this loss function; are the parameters of the value function network, which are used to adjust the network to minimize the loss function; Indicates that the parameter The value function value under ; It is the core part of the loss function and represents the value function and actual rewards The squared error between

[0085] (6) Update the value function network

[0086] ;

[0087] in, is the network parameter representing the value function About loss function gradient.

[0088] Compared with the prior art, the present invention has the following beneficial effects:

[0089] 1. By setting up a mounting mechanism, the bumper frame assembly is installed on the pickup truck through a fixing plate. When the pickup truck is bumpy, the return spring and the shock absorber body buffer the generated bump force, avoiding the phenomenon of resonance of the bumper frame assembly and ensuring the normal use of the pickup truck rear bumper frame assembly;

[0090] 2. By setting up a shock-absorbing mechanism and an anti-impact mechanism, the anti-impact mechanism and the shock-absorbing mechanism buffer the impact force received in turn, thereby improving the impact resistance of the bumper frame itself.

[0091] 3. By placing accelerometers, strain gauges, and displacement sensors on the bumper frame, real-time monitoring of the vehicle's driving status and bumper stress changes is achieved. The collected data undergoes preprocessing and feature extraction, then is input into an adaptive reinforcement learning model for real-time analysis and feedback. By extracting features such as the mean and variance of acceleration, strain, and displacement, and using an improved adaptive reinforcement learning algorithm, different types of impact forces and resonance conditions are effectively identified and distinguished, enabling more precise adjustments. The adaptive reinforcement learning algorithm automatically adjusts the shock absorber's damping coefficient and return spring stiffness based on the real-time monitored status and identified impact type, ensuring optimal shock absorption and impact resistance under varying road conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] Figure 1 is a side view of the present invention;

[0093] Figure 2 is a side view of the anti-impact mechanism of the present invention;

[0094] Figure 3 A diagram showing the connection between the mounting mechanism and the mounting frame of the present invention;

[0095] Figure 4 This is a diagram showing the connection between the shock absorbing mechanism and the bumper body of the present invention;

[0096] Figure 5 It is a side view of the mounting mechanism of the present invention;

[0097] Figure 6 This is a diagram showing the connection between the frame member and the bumper body of the present invention;

[0098] Figure 7 is a flow chart of the present invention;

[0099] Figure 8 Flowchart of the intelligent algorithm of the present invention.

[0100] In the figure: 1. Connecting platform; 2. Magnetic mounting frame; 3. Mounting mechanism; 31. Magnetic displacement block; 32. Fixing plate; 33. Reset spring; 34. Limiting plate; 35. Shock absorber body; 36. Threaded hole; 4. Shock absorbing mechanism; 41. Limiting shell; 42. Mounting platform; 43. Extension plate; 44. Angle seat; 45. Shock absorbing spring; 5. Telescopic rod; 6. Anti-impact mechanism; 61. Height frame; 62. Sliding block; 63. Translation plate; 64. Push rod; 65. Length plate; 66. Silicone block; 67. Pulley; 68. Spring shock absorber; 69. Synchronous block; 7. Connecting seat; 8. Assembly platform; 9. Bumper body; 10. Frame parts. DETAILED DESCRIPTION

[0101] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0102] See also Figure 1-7The present invention provides an impact-resistant pickup truck rear bumper frame assembly, including a connecting platform 1, a magnetic mounting frame 2 is fixedly installed at the bottom end of the connecting platform 1, and two mounting mechanisms 3 are slidably connected to the middle part of the magnetic mounting frame 2. A frame member 10 is provided at the top of the connecting platform 1, and both ends of the frame member 10 are slidably connected to a bumper body 9. The tops of the two bumper bodies 9 are fixedly installed with an impact-resistant mechanism 6, and the bottom ends of the two bumper bodies 9 are installed with a shock-absorbing mechanism 4. The two mounting mechanisms 3 each include a magnetic displacement block 31 and two limit plates 34. The bottom end of the magnetic displacement block 31 is provided with a fixed plate 32, and the two sides of the top of the fixed plate 32 are respectively fixedly connected to the bottom ends of the two limit plates 34. The two impact-resistant mechanisms 6 each include a length plate 65 and a silicone block 66. The top of the length plate 65 is fixedly connected to the bottom end of the silicone block 66. Two height frames 61 are provided at the bottom end of the degree plate 65, and the two shock-absorbing mechanisms 4 both include a mounting platform 42 and an angle seat 44. The top of the mounting platform 42 is fixedly installed with the angle seat 44, and the internal rotation of the angle seat 44 is connected to the extension plate 43, and the top of the extension plate 43 is slidably connected to the limiting shell 41. A shock-absorbing spring 45 is installed at the height between the extension plate 43 and the limiting shell 41. The magnetic displacement block 31 slides along the magnetic mounting frame 2 to adjust the installation position of the mounting mechanism 3. When the pickup truck is bumpy, the bumping force drives the fixed plate 32 to bump from one side, and the fixed plate 32 squeezes the return spring 33 from one side. The return spring 33 is elastic, and the return spring 33 undergoes elastic deformation to buffer the squeezing force, and the shock absorber body 35 buffers the deformation force generated by the return spring 33 to avoid resonance in the bumper.

[0103] Threaded holes 36 are provided at the four corners of the top of the fixing plate 32 , and the user screws through the threaded holes 36 to fix the fixing plate 32 .

[0104] The shock absorber body 35 is fixedly installed in the middle of the top of the fixed plate 32, and the top of the shock absorber body 35 is fixedly connected to the middle of the bottom end of the magnetic displacement block 31. Two return springs 33 are fixedly installed on the fixed plate 32, which are respectively located on both sides of the shock absorber body 35. The top ends of the two return springs 33 are fixedly connected to the side opposite to the magnetic displacement block 31. The magnetic displacement block 31 is slidably connected to the magnetic mounting frame 2. The magnetic displacement block 31 slides along the magnetic mounting frame 2 to adjust the position of the mounting mechanism 3.

[0105] The middle parts of the two height frames 61 are slidably connected with sliding blocks 62, and a translation plate 63 is fixedly installed between the two sliding blocks 62. Both sides of the top of the translation plate 63 are rotatably connected with push rods 64, and the tops of the two push rods 64 are installed with synchronization blocks 69. The tops of the two synchronization blocks 69 are fixedly installed with pulleys 67. The two pulleys 67 are slidably connected with the length plate 65, and a spring shock absorber 68 is fixedly installed between the two push rods 64. When an external force collides with the anti-impact mechanism 6, the length plate 65 moves toward the direction close to the bumper body 9, and the pulley 67 slides along the length plate 65. During the sliding process of the pulley 67, it drives the synchronization block 69 to push the push rod 64 to deflect along the translation plate 63, and the translation plate 63 drives the sliding block 62 to slide along the height frame 61, and the spring shock absorber 68 buffers the deformation force and impact force generated.

[0106] The bottom ends of the two height frames 61 are fixedly connected to the side of the bumper body 9 facing each other, and the anti-impact mechanism 6 is installed on the bumper body 9 through the height frames 61 .

[0107] The top ends of the two limiting shells 41 are connected to the side facing the bumper body 9, and the bottom ends of the two mounting platforms 42 are fixedly connected to the side facing the connecting platform 1. The shock absorbing mechanism 4 is installed on the bumper body 9 through the limiting shells 41, and the shock absorbing mechanism 4 is installed on the connecting platform 1 through the mounting platforms 42.

[0108] An assembly platform 8 is fixedly installed in the middle of the top of the connecting platform 1, and connecting seats 7 are fixedly installed on both sides of the top of the assembly platform 8. The inside of the two connecting seats 7 is rotatably connected to the telescopic rods 5. The fixed ends of the two telescopic rods 5 are respectively connected to the side opposite to the two bumper bodies 9. The connecting platform 1 is installed on the bumper body 9 through the telescopic rods 5 and the assembly platform 8. The bumper body 9 slides relative to the frame member 10, and the telescopic rods 5 perform telescopic and deflection movements to increase the sliding stability of the bumper body 9.

[0109] The present invention provides a method for manufacturing an impact-resistant pickup truck rear bumper frame assembly, comprising the following steps:

[0110] Step 1: Specification and material design: Conduct preliminary design of the exterior according to the pickup truck model and select impact-resistant materials;

[0111] Step 2: Mold setting: Prepare the corresponding top mold and bottom mold according to the model design;

[0112] Step 3: Product preparation: The selected material is injected between the top mold and the bottom mold for cutting, stamping and forming, and the product is obtained after cooling and demoulding;

[0113] Step 4: Surface treatment: The formed product is surface-grinded and polished using polishing and grinding equipment.

[0114] The manufacturing method of the impact-resistant pickup truck rear bumper frame assembly of the present invention comprises the following steps:

[0115] 1. Data Collection and Preprocessing

[0116] 1. Sensor data collection:

[0117] Suppose that in an experiment, we placed accelerometers, strain gauges, and displacement sensors on the rear bumper frame of a pickup truck and collected the following data:

[0118] Acceleration data ;

[0119] strain data ;

[0120] Displacement data ;

[0121] 2. Data preprocessing:

[0122] The data is filtered and denoised, assuming that there is no significant change in the data after processing.

[0123] 2. Feature Extraction

[0124] Extract key features from preprocessed sensor data:

[0125] Mean acceleration Sum and variance :

[0126] ;

[0127] ;

[0128] mean strain and variance :

[0129] ;

[0130] ;

[0131] Displacement mean and variance :

[0132] ;

[0133] ;

[0134] The extracted feature vector:

[0135] ;

[0136] 3. Improved Adaptive Reinforcement Learning Model

[0137] 1. State definition

[0138] The feature vector at the current moment

[0139] ;

[0140] 2. Action Definition

[0141] Action Space:

[0142] ;

[0143] 3. Reward Function

[0144] Give rewards or penalties based on the working condition of the bumper;

[0145] ;

[0146] Among them, assuming The reward is calculated:

[0147] ;

[0148] 4. Policy Network

[0149] Use proximal policy optimization algorithms to learn the optimal policy and select actions To maximize future rewards;

[0150] (1) Strategy function

[0151] The probability distribution of the policy network output action:

[0152] ;

[0153] (2) Advantage function

[0154] The advantage function measures the advantage of a particular state-action pair:

[0155] ;

[0156] ;

[0157] ;

[0158] (3) Objective function

[0159] The proximal policy optimization algorithm updates the policy network by optimizing the following objective function

[0160] ;

[0161] ;

[0162] (4) Update strategy network

[0163] ;

[0164] (5) Value function update

[0165] The value function is updated by minimizing the following loss function:

[0166] ;

[0167] (6) Update the value function network

[0168] ;

[0169] In the present invention, the appearance is preliminarily designed according to the pickup truck model, and impact-resistant materials are selected; the corresponding top mold and bottom mold are prepared according to the model design; the selected material is injected between the top mold and the bottom mold for cutting, stamping and molding, and the product is obtained after cooling and demolding; the surface of the molded product is polished and polished by polishing and grinding equipment, the user screws the screw through the threaded hole 36 to fix the fixing plate 32, and the magnetic displacement block 31 slides along the magnetic mounting frame 2 to adjust the installation position of the mounting mechanism 3. When the pickup truck is bumpy, the bump force drives the fixing plate 32 to bump from one side, and the fixing plate 32 squeezes the reset spring from one side. The spring 33 and the return spring 33 are elastic. The return spring 33 undergoes elastic deformation to buffer the extrusion force, and the shock absorber body 35 buffers the deformation force generated by the return spring 33 to avoid resonance in the bumper. When an external force collides with the anti-impact mechanism 6, the length plate 65 moves toward the direction close to the bumper body 9, and the pulley 67 slides along the length plate 65. During the sliding process of the pulley 67, the synchronous block 69 is driven to push the push rod 64 to deflect the angle along the translation plate 63, and the translation plate 63 drives the sliding block 62 to slide along the height frame 61, and the spring shock absorber 68 buffers the generated deformation force and impact force.

[0170] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An impact-resistant pickup truck rear bumper frame assembly, comprising a connecting platform (1), characterized in that: The bottom end of the connecting platform (1) is fixedly mounted with a magnetic mounting frame (2), the middle of the magnetic mounting frame (2) is slidably connected to two mounting mechanisms (3), the top end of the connecting platform (1) is provided with a frame member (10), both ends of the frame member (10) are slidably connected to a bumper body (9), the top ends of the two bumper bodies (9) are fixedly mounted with an anti-impact mechanism (6), the bottom ends of the two bumper bodies (9) are installed with a shock absorbing mechanism (4), and the two mounting mechanisms (3) each include a magnetic displacement block (31) and two limiting plates (34), the bottom end of the magnetic displacement block (31) is provided with a fixed plate (32), the top ends of the fixed plate (32) are respectively connected to the two The bottom end of the limit plate (34) is fixedly connected, and the two anti-impact mechanisms (6) each include a length plate (65) and a silica gel block (66), the top end of the length plate (65) is fixedly connected to the bottom end of the silica gel block (66), and the bottom end of the length plate (65) is provided with two height frames (61), and the two shock absorbing mechanisms (4) each include a mounting platform (42) and an angle seat (44), the top end of the mounting platform (42) is fixedly mounted with an angle seat (44), the interior of the angle seat (44) is rotatably connected with an extension plate (43), the top end of the extension plate (43) is slidably connected to the limit shell (41), and a shock absorbing spring (45) is installed at a height between the extension plate (43) and the limit shell (41); A shock absorber body (35) is fixedly mounted in the middle of the top of the fixing plate (32), and the top of the shock absorber body (35) is fixedly connected to the middle of the bottom of the magnetic displacement block (31). Two return springs (33) are fixedly mounted on the fixing plate (32), and are located on both sides of the shock absorber body (35). The tops of the two return springs (33) are fixedly connected to the side facing the magnetic displacement block (31), and the magnetic displacement block (31) is slidably connected to the magnetic mounting frame (2); The middle parts of the two height frames (61) are slidably connected to a sliding block (62), a translation plate (63) is fixedly installed between the two sliding blocks (62), both sides of the top of the translation plate (63) are rotatably connected to a push rod (64), the tops of the two push rods (64) are installed with a synchronization block (69), the tops of the two synchronization blocks (69) are fixedly installed with a pulley (67), the two pulleys (67) are slidably connected to the length plate (65), and a spring shock absorber (68) is fixedly installed between the two push rods (64).

2. The impact-resistant pickup truck rear bumper frame assembly according to claim 1, characterized in that: The four corners at the top of the fixing plate (32) are each provided with threaded holes (36).

3. The impact-resistant pickup truck rear bumper frame assembly according to claim 1, characterized in that: The bottom ends of the two height frames (61) are fixedly connected to the side facing the bumper body (9).

4. The impact-resistant pickup truck rear bumper frame assembly according to claim 1, characterized in that: The top ends of the two limiting shells (41) are connected to the side facing the bumper body (9), and the bottom ends of the two mounting platforms (42) are fixedly connected to the side facing the connecting platform (1).

5. The impact-resistant pickup truck rear bumper frame assembly according to claim 1, characterized in that: An assembly platform (8) is fixedly installed in the middle of the top of the connection platform (1), and connection seats (7) are fixedly installed on both sides of the top of the assembly platform (8). The interiors of the two connection seats (7) are rotatably connected to telescopic rods (5), and the fixed ends of the two telescopic rods (5) are respectively connected to the opposite sides of the two bumper bodies (9).

6. A method for manufacturing an impact-resistant pickup truck rear bumper frame assembly according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Specification and material design: Conduct preliminary design of the exterior according to the pickup truck model and select impact-resistant materials; Step 2: Mold setting: Prepare the corresponding top mold and bottom mold according to the model design; Step 3: Product preparation: The selected material is injected between the top mold and the bottom mold for cutting, stamping and forming, and the product is obtained after cooling and demoulding; Step 4: Surface treatment: The formed product is surface-grinded and polished using polishing and grinding equipment.

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