Multi-angle heat dissipation structure of automobile power device

Abstract

The invention provides a multi-angle heat dissipation structure of an automobile power device, and relates to the field of automobile heat dissipation, the multi-angle heat dissipation structure comprises a grating support, and a plurality of grating blades are arranged on the left side and the right side of the inner end of the grating support up and down; the two dustproof net frames are fixedly connected to the left side and the right side of the rear end face of the grating support correspondingly. The two limiting guide frames are vertically aligned and fixedly connected to the left side and the right side of the rear end face of the grille support. The two cleaning rollers are arranged on the front end faces of the two dustproof net frames correspondingly. Positioning bolts are in threaded connection with the inner sides of the mounting through holes; a positioning support ring is rotationally connected to the alignment position of the mounting through hole; the positioning auxiliary mechanism is arranged between the plurality of positioning support rings and the positioning bolt; the fastening force among the positioning bolts is kept consistent, so that the stress uniformity of the air-inlet grille and the heat dissipation efficiency of a vehicle are ensured, and the labor intensity of operators is reduced; the problems that due to the fact that bolt fastening torque difference easily causes uneven grid stress, grid deformation is caused, and angle deviation exists between blades are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile heat dissipation, and in particular to a multi-angle heat dissipation structure of an automobile power device. Background Art

[0002] During the operation of new energy vehicles, the air intake grille is positioned and installed on the front end face of the frame with multiple bolts. The air intake grille is used to dissipate heat from power devices such as batteries, motors and electronic control modules in the vehicle to maintain battery health and avoid high temperature-induced motor performance degradation. In the application of the air intake grille, sensors, control units and actuators are usually used to work together to adjust the angle of the grille blades according to data such as the vehicle speed, battery and ambient temperature, and air-conditioning status to achieve dynamic airflow management.

[0003] For example, the existing application number CN202210111840.X discloses an air intake grille and a vehicle, including one or more blade assemblies, a drive motor and a blade mounting seat arranged on the inner side of the bumper body; the drive motor is installed on the bumper body and is located on the inner side of the bumper body; the blade assembly includes one or more detachable blades connected together, the two ends of the blades are rotatably mounted on the blade mounting seat, and one end of the blade assembly is connected to the power output end of the drive motor, and the blades are driven to open or close by the drive motor; this invention optimizes the aerodynamic performance of the car by fully opening or closing the blades, and can achieve the purpose of energy saving.

[0004] However, in the process of positioning and installing the air intake grille and the frame, after the air intake grille is docked to the specified position of the frame, the operator needs to rotate multiple bolts in sequence to achieve the positioning of the air intake grille and the frame. In the process of the operator rotating the multiple bolts separately, it is very easy for the grille to be unevenly stressed due to the difference in the tightening torque of the bolts, resulting in deformation of the grille and angular deviation between the blades, affecting the heat dissipation efficiency of the vehicle, as well as the installation efficiency and pass rate of the air intake grille and the frame. At the same time, during the driving of the vehicle, it is very easy for the motor vibration to aggravate the loosening of the connection between the air intake grille and the frame, affecting the stability of the connection between the air intake grille and the frame. Summary of the Invention

[0005] In view of this, the present invention provides a multi-angle heat dissipation structure for an automobile power unit, which connects the air intake grille to the specified position of the vehicle frame, and inserts the positioning bolts into the inner side of the installation through hole. By rotating any one of the positioning bolts, the synchronous rotation of multiple positioning bolts can be achieved, so that the fastening force between the multiple positioning bolts is kept consistent, which not only ensures the force uniformity of the air intake grille and the heat dissipation efficiency of the vehicle, but also reduces the labor intensity of the operator and improves the installation efficiency and qualified rate of the air intake grille and the whole vehicle bracket; the multiple positioning bolts are rotated synchronously to make their fastening force consistent. In the process of positioning and installing the air intake grille, the positioning bolts are rotated to the specified position and then tightened. The automatic locking and positioning not only avoids the phenomenon of positioning bolts being stripped due to inexperience or negligence of the operator, but also ensures the installation stability of the air intake grille and the vehicle bracket, greatly avoids the loose connection between the air intake grille and the frame due to motor vibration, further ensures the safety of vehicle driving, and accelerates the air flow exchange speed, improves the heat dissipation efficiency of the vehicle power unit, and realizes the automatic cleaning of dust and impurities on the outside of the dustproof grid, avoiding the influence of impurities blocking the dustproof grid on the air intake efficiency, further improving the heat dissipation efficiency of the vehicle power unit, as well as the use effect and work efficiency of the air intake grille in actual application.

[0006] The present invention provides a multi-angle heat dissipation structure of an automobile power device, specifically comprising: a grille bracket, grille blades, an electric push rod, a dustproof grid frame, a limiting guide frame, a cleaning roller, a cleaning auxiliary mechanism and a positioning auxiliary mechanism, wherein the grille blades are provided in a plurality, and the plurality of grille blades are arranged up and down on the left and right sides of the inner end of the grille bracket; the electric push rod is provided on the lower side of the rear end face of the grille bracket, and the bottom end face of the electric push rod is fixedly connected to the grille bracket; the dustproof grid frames are two, and the two dustproof grid frames are respectively fixedly connected to the left and right sides of the rear end face of the grille bracket, and the dustproof grid frames are of a U-shaped structure; the limiting guide frames are provided in two groups, and the two The group of limit guide frames are aligned and fixedly connected to the left and right sides of the rear end face of the grille bracket; there are two cleaning rollers, and the two cleaning rollers are respectively arranged on the front end faces of the two dust-proof grid frames, and the cleaning rollers on the same side of the left and right sides are slidably arranged with the limit guide frames; the upper end of the electric push rod is slidably connected to the piston rod; the cleaning auxiliary mechanism is arranged between the piston rod and the cleaning roller; a plurality of mounting through holes are evenly arranged on the outside of the grille bracket; the inner side of the mounting through hole is threadedly connected with a positioning bolt; the alignment position of the mounting through hole is rotatably connected with a positioning support ring; the positioning auxiliary mechanism is arranged between multiple positioning support rings and the positioning bolt.

[0007] Furthermore, the two ends of the grille blade are coaxially fixedly connected with a positioning support shaft; the positioning support shaft is rotatably connected to the grille bracket; the front and rear sides of the upper and lower end surfaces of the grille blade are provided with speed-increasing auxiliary grooves; the speed-increasing auxiliary grooves are inclined groove-like structures inclined from the outside to the inside.

[0008] Furthermore, the cleaning auxiliary mechanism includes: a driving gear and a driving rack, the driving gear is laterally rotatably connected to the rear end of the grille bracket; the driving rack is fixedly connected to the rear end face of the piston rod, and the driving gear and the driving rack are engaged with each other.

[0009] Furthermore, the front end surface of the piston rod is fixedly connected to a drive auxiliary frame; the drive auxiliary frame is slidably connected to the grid support; The front end of the inner end surface of the grille blade is fixedly connected with a connecting auxiliary shaft; the connecting auxiliary shaft is rotatably connected to the driving auxiliary frame, and the driving auxiliary frame is slidably connected to the rear end of the grille bracket.

[0010] Furthermore, the cleaning auxiliary mechanism also includes: a transmission support shaft and a reciprocating screw, the transmission support shaft is longitudinally rotatably connected to the rear end of the grille bracket; there are two reciprocating screws, and the two reciprocating screws are vertically rotatably arranged on the upper and lower sides of the transmission support shaft, and the two ends of the reciprocating screw are rotatably connected to the limit guide frame; the outer end of the driving gear is coaxially fixedly connected to the driving bevel gear; the outer side of the transmission support shaft is coaxially fixedly connected to the auxiliary bevel gear; the driving bevel gear and the auxiliary bevel gear are meshed with each other, and the number of teeth of the driving bevel gear is greater than the number of teeth of the auxiliary bevel gear; the upper and lower ends of the transmission support shaft are coaxially fixedly connected to the driving bevel gear; the outer sides of the two reciprocating screws are coaxially fixedly connected to the driven bevel gear; the driving bevel gear and the driven bevel gear on the same side of the upper and lower sides are meshed with each other, and the number of teeth of the driving bevel gear is greater than the number of teeth of the driven bevel gear.

[0011] Furthermore, the outer side of the reciprocating screw is threadedly connected to a transmission auxiliary block; the outer side of the transmission auxiliary block is elastically connected to an elastic positioning frame; and the upper and lower ends of the cleaning roller are rotatably connected to the elastic positioning frame.

[0012] Furthermore, the cleaning auxiliary mechanism also includes: a transmission rack and a transmission gear, there are two groups of transmission racks, and the two groups of transmission racks are respectively fixedly connected to the upper and lower sides of the rear end face of the grille bracket; there are two groups of transmission gears, and the two groups of transmission gears are respectively coaxially fixedly connected to the upper and lower ends of the two cleaning rollers; the transmission gears and transmission racks on the same side are meshed with each other; the outer side of the transmission rack is vertically fixedly connected to a force support plate; the outer end of the transmission gear is coaxially fixedly connected to a transmission cam; the transmission cam and the force support plate on the same side are pressed against each other.

[0013] Furthermore, a positioning protrusion is fixedly connected to the inner side of the positioning support ring; and a positioning groove is provided on the outer side of the positioning bolt at a position aligned with the positioning protrusion.

[0014] Furthermore, two adjacent positioning support rings are connected by a synchronous pulley transmission assembly; the outer side of the transmission pulleys at both ends of the synchronous pulley transmission assembly is provided with a toothed structure, and the inner side of the synchronous belt is provided with a tooth groove; the tooth groove and the toothed structure are engaged with each other.

[0015] Furthermore, the positioning auxiliary mechanism also includes: a spring pin, there are multiple spring pins, and the multiple spring pins are vertically and elastically arranged on the outside of multiple mounting holes, and the spring pins are elastically connected to the grille bracket; a T-shaped operating block is vertically fixedly connected to the outside of the spring pin; a limiting guide groove is provided at the alignment position of the grille bracket and the T-shaped operating block; a positioning through hole is provided on the inside of the positioning bolt; and a slope structure is provided between the fitting surfaces of the positioning bolt and the spring pin.

[0016] Furthermore, the grille bracket, grille blades, electric push rods, dustproof grid frames, limiting guide frames, cleaning rollers, cleaning auxiliary mechanisms and positioning auxiliary mechanisms, the grille blades are multiple, and the multiple grille blades are arranged up and down on the left and right sides of the inner end of the grille bracket; the electric push rods are arranged on the lower side of the rear end face of the grille bracket, and the bottom end face of the electric push rods is fixedly connected to the grille bracket; there are two dustproof grid frames, and the two dustproof grid frames are respectively fixedly connected to the left and right sides of the rear end face of the grille bracket, and the dustproof grid frames are of a U-shaped structure; there are two groups of limiting guide frames, and the two groups of limiting guide frames are aligned and fixed up and down It is connected to the left and right sides of the rear end face of the grille bracket; there are two cleaning rollers, which are respectively arranged on the front end faces of the two dust-proof grid frames, and the cleaning rollers on the same side of the left and right sides are slidably arranged with the limit guide frame; the upper end of the electric push rod is slidably connected to the piston rod; the cleaning auxiliary mechanism is arranged between the piston rod and the cleaning roller; a plurality of mounting through holes are evenly arranged on the outside of the grille bracket; the inner side of the mounting through hole is threadedly connected to a positioning bolt; the alignment position of the mounting through hole is rotatably connected to a positioning support ring; the positioning auxiliary mechanism is arranged between multiple positioning support rings and the positioning bolt. Beneficial effects

[0017] When the present invention is in use, the air intake grille is docked to the specified position of the vehicle frame, and the positioning bolts are inserted into the inner side of the installation through hole. By rotating any one of the positioning bolts, the synchronous rotation of multiple positioning bolts can be achieved, so that the tightening force between the multiple positioning bolts remains consistent, which not only ensures the force uniformity of the air intake grille and the heat dissipation efficiency of the vehicle, but also reduces the labor intensity of the operator and improves the installation efficiency and pass rate of the air intake grille and the whole vehicle bracket.

[0018] The present invention uses a plurality of positioning bolts to rotate synchronously to make their tightening force consistent to position and install the air intake grille. After the positioning bolts are rotated to the specified position, the positioning bolts are automatically locked and positioned. This not only avoids the slippage of the positioning bolts due to inexperience or negligence of the operator, but also ensures the installation stability of the air intake grille and the whole vehicle bracket, greatly avoids the loose connection between the air intake grille and the frame due to motor vibration, and further ensures the safety of vehicle driving.

[0019] When in use, the present invention accelerates the air flow exchange speed, improves the heat dissipation efficiency of the automobile power unit, and simultaneously realizes automatic cleaning of dust and impurities on the outside of the dustproof grid frame, avoiding the influence of impurities blocking the dustproof grid frame on the air intake efficiency, further improving the heat dissipation efficiency of the automobile power unit, as well as the use effect and work efficiency of the air intake grille in actual application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0021] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached figure: Figure 1 It is a front isometric structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the rear isometric structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the installation structure of the piston rod and the cleaning auxiliary mechanism of the present invention.

[0025] Figure 4 It is a schematic diagram of the connection structure between the cleaning roller and the transmission cam of the present invention.

[0026] Figure 5 It is a schematic diagram of the installation structure of the cleaning roller and the limiting guide frame of the present invention.

[0027] Figure 6 It is a schematic diagram of the installation structure of the grille blades and the drive auxiliary frame of the present invention.

[0028] Figure 7 It is a structural schematic diagram of the positioning auxiliary mechanism of the present invention.

[0029] Figure 8 It is a schematic diagram of the installation structure of the positioning bolt and the positioning support ring of the present invention.

[0030] Figure 9It is a schematic structural diagram of the positioning bolt and the spring pin after being separated.

[0031] Reference Signs List 1. Grille bracket; 2. Grille blades; 201. Positioning support shaft; 202. Connecting auxiliary shaft; 203. Speed-increasing auxiliary slot; 3. Electric push rod; 301. Piston rod; 302. Drive auxiliary frame; 4. Dustproof mesh frame; 5. Positioning guide frame; 6. Cleaning roller; 601. Drive gear; 602. Drive rack; 603. Transmission support shaft; 604. Drive bevel gear; 605. Auxiliary bevel gear; 606. Reciprocating screw; 607 , driving bevel gear; 608, driven bevel gear; 609, transmission auxiliary block; 610, elastic positioning frame; 611, transmission rack; 612, transmission gear; 613, force support plate; 614, transmission cam; 7, positioning bolt; 701, positioning support ring; 702, positioning protrusion; 703, positioning groove; 704, synchronous pulley transmission assembly; 705, spring pin; 706, T-type operating block; 707, positioning through hole. DETAILED DESCRIPTION Example 1

[0032] Please refer to Figures 1 to 6 As shown: The present invention provides a multi-angle heat dissipation structure of an automobile power device, comprising a grille support 1, grille blades 2, an electric push rod 3, a dustproof grid frame 4, a limiting guide frame 5, a cleaning roller 6 and a cleaning auxiliary mechanism. There are multiple grille blades 2, and the multiple grille blades 2 are arranged up and down on the left and right sides of the inner end of the grille support 1; the electric push rod 3 is arranged on the lower side of the rear end face of the grille support 1, and the bottom end face of the electric push rod 3 is fixedly connected to the grille support 1; there are two dustproof grid frames 4, and the two dustproof grid frames 4 are respectively fixedly connected to the left and right sides of the rear end face of the grille support 1, and the dustproof grid frame 4 is a U-shaped structure; there are two groups of limiting guide frames 5, and the two groups of limiting guide frames 5 are fixedly connected to the left and right sides of the rear end face of the grille support 1 in an upright position; there are two cleaning rollers 6, and the two cleaning rollers 6 are respectively arranged on the front end faces of the two dustproof grid frames 4, and the cleaning rollers 6 on the same side of the left and right are slidably arranged with the limiting guide frame 5; the upper end of the electric push rod 3 is slidably connected to the piston rod 301; the cleaning auxiliary mechanism is arranged between the piston rod 301 and the cleaning roller 6.

[0033] Among them, the two ends of the grille blade 2 are coaxially fixedly connected with a positioning support shaft 201; the positioning support shaft 201 is rotatably connected to the grille bracket 1; the front and rear sides of the upper and lower end surfaces of the grille blade 2 are provided with speed-increasing auxiliary grooves 203; the speed-increasing auxiliary grooves 203 are an oblique groove structure inclined from the outside to the inside.

[0034] The front end surface of the piston rod 301 is fixedly connected to the driving auxiliary frame 302; the driving auxiliary frame 302 is slidably connected to the grid support 1; The front end of the inner end surface of the grille blade 2 is fixedly connected with a connecting auxiliary shaft 202; the connecting auxiliary shaft 202 is rotatably connected to the driving auxiliary frame 302, and the driving auxiliary frame 302 is rotatably connected to the rear end of the grille bracket 1.

[0035] Among them, the cleaning auxiliary mechanism includes: a driving gear 601 and a driving rack 602, the driving gear 601 is laterally connected to the rear end of the grille bracket 1; the driving rack 602 is fixedly connected to the rear end face of the piston rod 301, and the driving gear 601 and the driving rack 602 are engaged with each other.

[0036] Among them, the cleaning auxiliary mechanism also includes: a transmission support shaft 603 and a reciprocating screw 606, the transmission support shaft 603 is longitudinally connected to the rear end of the grille bracket 1; there are two reciprocating screws 606, which are vertically rotated and arranged on the upper and lower sides of the transmission support shaft 603, and the two ends of the reciprocating screw 606 are rotatably connected to the limit guide frame 5; the outer end of the driving gear 601 is coaxially fixedly connected to the driving bevel gear 604; the outer side of the transmission support shaft 603 is coaxially fixedly connected to the auxiliary bevel gear 60 5; the driving bevel gear 604 and the auxiliary bevel gear 605 are meshed with each other, and the number of teeth of the driving bevel gear 604 is greater than the number of teeth of the auxiliary bevel gear 605; the upper and lower ends of the transmission support shaft 603 are coaxially fixedly connected with the driving bevel gear 607; the outer sides of the two reciprocating screws 606 are coaxially fixedly connected with the driven bevel gear 608; the driving bevel gear 607 and the driven bevel gear 608 on the same side at the upper and lower sides are meshed with each other, and the number of teeth of the driving bevel gear 607 is greater than the number of teeth of the driven bevel gear 608.

[0037] The outer side of the reciprocating screw 606 is threadedly connected to a transmission auxiliary block 609 ; the outer side of the transmission auxiliary block 609 is elastically connected to an elastic positioning frame 610 ; the upper and lower ends of the cleaning roller 6 are rotatably connected to the elastic positioning frame 610 .

[0038] Among them, the cleaning auxiliary mechanism also includes: a transmission rack 611 and a transmission gear 612. There are two groups of transmission racks 611, and the two groups of transmission racks 611 are respectively fixedly connected to the upper and lower sides of the rear end face of the grille bracket 1; there are two groups of transmission gears 612, and the two groups of transmission gears 612 are respectively coaxially fixedly connected to the upper and lower ends of the two cleaning rollers 6; the transmission gears 612 and the transmission racks 611 on the same side are meshed with each other; the outer side of the transmission rack 611 is vertically fixedly connected to a force support plate 613; the outer end of the transmission gear 612 is coaxially fixedly connected to a transmission cam 614; the transmission cam 614 and the force support plate 613 on the same side are pressed against each other.

[0039] The specific usage and function of this embodiment are as follows: When the present invention is in use, in the process of controlling the extension and retraction of the piston rod 301, the auxiliary frame 302 is pushed to slide up and down. When the auxiliary frame 302 slides, the auxiliary shaft 202 is connected to push the grille blades 2 to flip, and the angle of the grille blades 2 is adjusted. The cooperation of the speed-increasing auxiliary groove 203 is adopted, and the air circulation speed is accelerated in the same way as the Venturi tube phenomenon, thereby improving the heat dissipation efficiency of the automobile power unit; in the process of adjusting the angle of the grille blades 2, the driving rack 602 pushes the driving gear 601 to rotate when it slides. During the rotation of the driving gear 601, the driving bevel gear 604 pushes the auxiliary bevel gear 605 and the transmission support shaft 603 to rotate multiple times. During the rotation of the transmission support shaft 603, the active bevel gears 607 on both sides push the auxiliary bevel gear 605 and the transmission support shaft 603 to rotate multiple times. The movable bevel gear 608 and the reciprocating screw 606 rotate synchronously for multiple times. During the rotation of the reciprocating screw 606, the transmission auxiliary block 609 pushes the cleaning roller 6 to slide back and forth. During the reciprocating sliding of the cleaning roller 6, the transmission rack 611 pushes the transmission gear 612 and the cleaning roller 6 to rotate synchronously. During the reciprocating sliding and rotation of the cleaning roller 6, the transmission cam 614 rotates and contacts the force support plate 613, so that the cleaning roller 6 slides back and forth during the reciprocating sliding. During the sliding of the cleaning roller 6 back and forth, it contacts with the dustproof grid frame 4 and produces slight oscillation, thereby cleaning the dust and impurities on the outside of the dustproof grid frame 4, and quickly separating the dust and impurities on the outside of the cleaning roller 6, to avoid the adhesion and accumulation of impurities on the cleaning roller 6 and the outside of the dustproof grid frame 4. Example 2

[0040] like Figures 7 to 9 As shown: Based on the first embodiment, it also includes a positioning auxiliary mechanism. A plurality of mounting holes are evenly arranged on the outside of the grid support 1; a positioning bolt 7 is threadedly connected to the inside of the mounting hole; a positioning support ring 701 is rotatably connected to the alignment position of the mounting hole; the positioning auxiliary mechanism is arranged between the plurality of positioning support rings 701 and the positioning bolt 7.

[0041] A positioning protrusion 702 is fixedly connected to the inner side of the positioning support ring 701 ; a positioning groove 703 is provided on the outer side of the positioning bolt 7 at a position aligned with the positioning protrusion 702 .

[0042] Among them, the two adjacent positioning support rings 701 are connected by a synchronous pulley transmission assembly 704; the outer side of the transmission pulleys at both ends of the synchronous pulley transmission assembly 704 is provided with a toothed structure, and the inner side of the synchronous belt is provided with a tooth groove; the tooth groove and the toothed structure are meshed with each other.

[0043] Among them, the positioning auxiliary mechanism also includes: a spring pin 705, there are multiple spring pins 705, and the multiple spring pins 705 are respectively and vertically elastically arranged on the outside of multiple mounting holes, and the spring pin 705 is elastically connected to the grille bracket 1; a T-shaped operating block 706 is vertically fixedly connected to the outside of the spring pin 705; a limiting guide groove is provided at the alignment position of the grille bracket 1 and the T-shaped operating block 706; a positioning through hole 707 is provided on the inner side of the positioning bolt 7; and a slope structure is provided between the fitting surface of the positioning bolt 7 and the spring pin 705.

[0044] The specific usage and function of this embodiment are as follows: When the present invention is in use, during the process of positioning and installing the grille bracket 1 and the whole vehicle bracket, after the grille bracket 1 is docked to the specified position, the position of the positioning protrusion 702 is aligned with the positioning groove 703, and the positioning bolt 7 is inserted into the inner side of the installation through hole. When any positioning bolt 7 is rotated, the synchronous pulley transmission assembly 704 pushes the positioning support ring 701 and the positioning bolt 7 to rotate synchronously, thereby realizing the synchronous rotation and tightening of multiple positioning bolts 7. After the positioning bolt 7 is rotated to the specified position and the position of the spring pin 705 is aligned with the positioning through hole 707, the spring pin 705 is automatically inserted into the positioning through hole 707, thereby realizing automatic locking and positioning of multiple positioning bolts 7.

[0045] In this article, there are several points to note: 1. The drawings of this embodiment only involve the structures related to this embodiment. Other structures can refer to the general design.

[0046] 2. In the absence of conflict, the features of this embodiment and the embodiments can be combined with each other to obtain new embodiments.

[0047] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A multi-angle heat dissipation structure for an automobile power unit, comprising a grille support, grille blades, an electric push rod, a dustproof grid, a limit guide, a cleaning roller, a cleaning auxiliary mechanism, and a positioning auxiliary mechanism. The grille blades are provided in a plurality and arranged vertically on the left and right sides of the inner end of the grille support. The electric push rod is provided on the lower side of the rear end surface of the grille support, and the bottom end surface of the electric push rod is fixedly connected to the grille support. The invention is characterized in that: There are two dustproof grid frames, which are respectively fixedly connected to the left and right sides of the rear end face of the grille bracket, and the dustproof grid frames are of a U-shaped structure; there are two groups of limiting guide frames, which are aligned and fixedly connected to the left and right sides of the rear end face of the grille bracket; there are two cleaning rollers, which are respectively arranged on the front end faces of the two dustproof grid frames, and the cleaning rollers on the same side of the left and right sides are slidably arranged with the limiting guide frames; the upper end of the electric push rod is slidably connected to the piston rod; the cleaning auxiliary mechanism is arranged between the piston rod and the cleaning roller; a plurality of mounting through holes are evenly arranged on the outside of the grille bracket; the inner side of the mounting through hole is threadedly connected to a positioning bolt; the alignment position of the mounting through hole is rotatably connected to a positioning support ring; the positioning auxiliary mechanism is arranged between a plurality of positioning support rings and the positioning bolt.

2. The multi-angle heat dissipation structure of an automobile power unit according to claim 1, characterized in that: The two ends of the grille blade are coaxially fixedly connected with a positioning support shaft; the positioning support shaft is rotatably connected to the grille bracket; the front and rear sides of the upper and lower end surfaces of the grille blade are provided with speed-increasing auxiliary grooves; the speed-increasing auxiliary grooves are inclined groove-shaped structures from the outside to the inside.

3. The multi-angle heat dissipation structure of an automobile power unit according to claim 1, characterized in that: The front end surface of the piston rod is fixedly connected to a drive auxiliary frame; the drive auxiliary frame is slidably connected to the grid support; The front end of the inner end surface of the grille blade is fixedly connected with a connecting auxiliary shaft; the connecting auxiliary shaft is rotatably connected to the driving auxiliary frame, and the driving auxiliary frame is slidably connected to the rear end of the grille bracket.

4. The multi-angle heat dissipation structure of an automobile power unit according to claim 1, characterized in that: The cleaning auxiliary mechanism includes: a driving gear and a driving rack, the driving gear is connected to the rear end of the grid support in a transverse rotation; the driving rack is fixedly connected to the rear end face of the piston rod, and the driving gear and the driving rack are engaged with each other.

5. The multi-angle heat dissipation structure of an automobile power unit according to claim 4, characterized in that: The gear train is a gear that is engaged with the gears of the driven gear and is engaged with the gears of the driven gear and is interlocked with the gears of the driven gear and is interlocked with the gears of the driven gear.

6. The multi-angle heat dissipation structure of an automobile power unit according to claim 5, characterized in that: The outer side of the reciprocating screw is threadedly connected to a transmission auxiliary block; the outer side of the transmission auxiliary block is elastically connected to an elastic positioning frame; the upper and lower ends of the cleaning roller are rotatably connected to the elastic positioning frame.

7. The multi-angle heat dissipation structure of an automobile power unit according to claim 1, characterized in that: The cleaning auxiliary mechanism also includes: a transmission rack and a transmission gear. There are two groups of transmission racks, and the two groups of transmission racks are respectively fixedly connected to the upper and lower sides of the rear end face of the grille bracket; there are two groups of transmission gears, and the two groups of transmission gears are respectively coaxially fixedly connected to the upper and lower ends of the two cleaning rollers; the transmission gear and the transmission rack on the same side are meshed with each other; the outer side of the transmission rack is vertically fixedly connected to a force support plate; the outer end of the transmission gear is coaxially fixedly connected to a transmission cam; the transmission cam and the force support plate on the same side are pressed against each other.

8. The multi-angle heat dissipation structure of an automobile power unit according to claim 1, characterized in that: A positioning protrusion is fixedly connected to the inner side of the positioning support ring; a positioning groove is provided on the outer side of the positioning bolt at a position aligned with the positioning protrusion.

9. The multi-angle heat dissipation structure of an automobile power unit according to claim 1, characterized in that: The two adjacent positioning support rings are connected by a synchronous pulley transmission assembly; the outer sides of the transmission pulleys at both ends of the synchronous pulley transmission assembly are provided with tooth structures, and the inner side of the synchronous belt is provided with tooth grooves; the tooth grooves and the tooth structures are meshed with each other.

10. The multi-angle heat dissipation structure of an automobile power unit according to claim 1, characterized in that: The positioning auxiliary mechanism also includes: a spring pin, there are multiple spring pins, and the multiple spring pins are vertically and elastically arranged on the outside of multiple mounting holes, and the spring pins are elastically connected to the grille bracket; a T-shaped operating block is vertically fixedly connected to the outside of the spring pin; a limiting guide groove is provided at the alignment position of the grille bracket and the T-shaped operating block; a positioning through hole is provided on the inside of the positioning bolt; and a slope structure is provided between the fitting surfaces of the positioning bolt and the spring pin.

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