CN115042883A - Truck tail adjustable guide plate - Google Patents
Truck tail adjustable guide plate Download PDFInfo
- Publication number
- CN115042883A CN115042883A CN202210660663.0A CN202210660663A CN115042883A CN 115042883 A CN115042883 A CN 115042883A CN 202210660663 A CN202210660663 A CN 202210660663A CN 115042883 A CN115042883 A CN 115042883A
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- guide plate
- module
- air pressure
- main body
- displacement
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- 238000006073 displacement reaction Methods 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 5
- 239000013536 elastomeric material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 230000036544 posture Effects 0.000 description 14
- 230000033001 locomotion Effects 0.000 description 9
- 238000012856 packing Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/001—For commercial vehicles or tractor-trailer combinations, e.g. caravans
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
Abstract
The invention relates to an adjustable guide plate at the tail part of a truck, belonging to the technical field of truck accessories and comprising a storage module, a guide plate main body, a limiting module, a driving module, an acquisition module and a control module. The invention firstly measures the flow velocity of the flow field in the tail area of the container through the acquisition module, transmits the flow velocity information to the control module, the control module outputs the corresponding posture of the guide plate main body at the flow velocity according to the pre-input information, the drive module receives the output information of the control module, and adjusts the posture of the guide plate main body to achieve the effect of resistance reduction, in addition, the acquisition module can detect whether the posture of the guide plate reaches the expectation or not and feed back the information to the control module, if the posture of the guide plate does not reach the expectation, the control module can output the posture information of the guide plate to the drive module again to adjust the posture of the guide plate, thereby realizing light weight and safety, meeting the resistance reduction and flow guide of different driving conditions, and being more efficient and practical.
Description
Technical Field
The invention relates to the technical field of truck accessories, in particular to an adjustable guide plate at the tail part of a truck.
Background
At the end of the 20 th century, people began to pay attention to the flow field characteristics of trucks, and during normal running of trucks, the resistance mainly comprises pneumatic resistance, rolling resistance, gradient resistance and acceleration resistance, when the speed of an automobile reaches 80km/h, the proportion of the pneumatic resistance reaches more than 60%, and the proportion of the pneumatic resistance increases at a higher speed as the speed continues to increase. According to statistics, the proportion of the Chinese road cargo transportation to the total cargo transportation in 2021 reaches 73.89%, and the proportion will continue to increase with the continuous expansion of Chinese roads and the rapid development of logistics. Therefore, the reduction of the aerodynamic drag of the truck during driving, particularly at high speed, is significant for the fuel economy of the whole vehicle and the reduction of pollutant emission, and will further promote the development of the road transportation industry.
The tail of the truck usually has larger vortex, and the installation of the tail guide plate can improve the tail flow field to a great extent, thereby realizing the effect of drag reduction. The existing truck guide plate is generally arranged at the front end of a cab and at the side position and the side position of a container, rarely arranged at the tail part of the container, and rarely arranged at the tail part of the guide plate in a fixed shape and a fixed position, and has no universality on the driving working condition of changing multiple ends. In addition, the safety is improved while the light weight of the automobile is realized as far as possible, the guide plate has scalability, and when the truck is parked in place or runs at an ultra-low speed, the guide plate has little or no effect, can be retracted into the storage module, and can also play a role in protecting the air guide sleeve and other pedestrians.
Disclosure of Invention
The invention aims to provide an adjustable guide plate at the tail part of a truck, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an adjustable baffle of truck tail portion includes:
the storage module is arranged at the tail end of a truck cargo box;
the guide plate main body is arranged on the storage module and comprises a first-stage guide plate and a second-stage guide plate which are connected in a sliding mode and used for guiding flow;
the limiting module is arranged on the guide plate main body and the storage module and used for limiting the maximum displacement distance of the primary guide plate and the secondary guide plate in the processes of extending and retracting, preventing the primary guide plate and the secondary guide plate from falling off due to overlarge displacement, and driving the primary guide plate or the secondary guide plate to move integrally when the primary guide plate reaches the limit position;
the driving module is arranged on the storage module and comprises a primary driving unit for driving the guide plate main body to slide and a secondary driving unit for driving the guide plate main body to rotate, and the driving module is used for enabling the guide plate main body to generate displacement and rotate to adjust the posture;
an acquisition module: the air flow velocity and the attitude of the guide plate main body are measured, and the acquired signals are uploaded;
and the control module is arranged on the storage module and used for receiving the signal transmitted by the acquisition module and determining preset control information according to the signal to transmit the control information to the drive module.
As a further technical solution of the present invention, the primary driving unit includes:
the second electronic air pressure lifting rods are arranged in pairs and fixedly arranged on the storage module;
one end of the multi-connecting rod is rotatably connected with the output end of the second electronic air pressure lifting rod through a double-headed rivet, and pulleys arranged in pairs are mounted at the other end of the multi-connecting rod;
the first sliding rail is fixedly arranged at one end of the primary guide plate and matched with the pulley;
and the second sliding rail is fixedly arranged at one end of the primary guide plate and is matched with the pulley.
As a further aspect of the present invention, the pulley includes:
the connecting rod is fixedly arranged in the multi-connecting rod, and two ends of the connecting rod penetrate through the multi-connecting rod and extend to the outside;
and the roller wheels are rotatably arranged at the two ends of the connecting rod and are matched with the first sliding rail and the second sliding rail.
As a still further aspect of the present invention, the secondary driving unit includes:
one end of the first electronic air pressure lifting rod is rotatably connected with the container, and the other end of the first electronic air pressure lifting rod is rotatably connected with the storage module;
and the hinge is arranged between the storage module and the container, and drives the storage module to rotate by taking the hinge as a center when the first electronic air pressure lifting rod stretches.
As a further technical solution of the present invention, the limiting module includes:
and the limiting blocks are respectively arranged at the tail end of the first-stage guide plate, the two ends of the second-stage guide plate and the front end of the storage module.
As a further technical scheme of the invention, the limiting block is made of elastic materials.
As a still further technical solution of the present invention, the acquisition module includes:
the flow velocity acquisition submodule is arranged on the first-stage guide plate and the second-stage guide plate, is used for detecting the flow velocity of the first-stage guide plate and the second-stage guide plate and transmitting the flow velocity to the control module to judge the posture of the first-stage guide plate and the second-stage guide plate at the flow velocity;
and the displacement acquisition submodule is arranged on the first electronic air pressure lifting rod and the second electronic air pressure lifting rod and is used for detecting the displacement of the first electronic air pressure lifting rod and the second electronic air pressure lifting rod, and if the displacement length is different from the due displacement information output by the control module, the driving module can continue to operate until the displacement of the first electronic air pressure lifting rod and the displacement of the second electronic air pressure lifting rod reach the set expectation.
As a still further technical solution of the present invention, a chip is disposed in the control module, and is configured to receive the acquisition information of the acquisition module, store preset guide plate posture information, output corresponding guide plate posture information to the driving module through the acquisition information of the flow rate acquisition submodule, and judge whether the guide plate main body reaches an expected posture according to the acquisition information of the displacement acquisition submodule, and if not, continue outputting driving information to the driving module.
Compared with the prior art, the invention has the beneficial effects that: at first survey the regional flow field velocity of flow of packing box afterbody through collection module, with velocity of flow information transmission to control module, control module exports the guide plate main part gesture that corresponds under this velocity of flow according to the information input in advance, drive module receives control module's output information, the gesture of adjustment guide plate main part reaches the effect of drag reduction, collection module can detect whether the guide plate gesture reaches the expectation in addition, and feed back information to control module, if not reach the expectation, control module can export guide plate gesture information to drive module once more and adjust the guide plate gesture, thereby realize light weight safety, satisfy the drag reduction water conservancy diversion of different driving conditions, it is more efficient practical.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the configuration of the baffle body of the present invention as it extends;
FIG. 3 is a schematic view of the configuration of the primary baffle of the present invention when extended to the limit;
FIG. 4 is a schematic structural view of the primary baffle and the secondary baffle of the present invention both extending to extreme positions;
FIG. 5 is a schematic structural view of the first-stage air deflector and the second-stage air deflector both extending to the extreme positions and being adjusted by rotation;
FIG. 6 is a schematic view of the primary drive unit of the present invention in its contracted configuration;
FIG. 7 is a schematic view of the primary drive unit of the present invention in an extended configuration;
FIG. 8 is a schematic view of a connecting structure of a multi-link and a primary baffle according to the present invention;
fig. 9 is an illustration of the control module and the storage module when the baffle body is partially hidden according to the present invention.
In the figure: 1-a first electronic air pressure lifting rod, 2-a storage module, 3-a limiting block, 4-a plurality of connecting rods, 5-a second-stage guide plate, 6-a first-stage guide plate, 7-a hinge, 8-a second electronic air pressure lifting rod, 9-a double-headed rivet, 10-a first sliding rail, 11-a pulley, 12-a second sliding rail, 13-a connecting rod, 14-a roller, 15-a container and 16-a control module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
The embodiment of the invention is realized by the adjustable guide plate at the tail part of the truck shown in figures 1 to 9, which comprises:
the storage module 2 is arranged at the tail end of a truck cargo box 15;
the guide plate main body is arranged on the storage module 2 and comprises a first-stage guide plate 6 and a second-stage guide plate 5 which are connected in a sliding mode and used for guiding flow;
the limiting module is arranged on the guide plate main body and the storage module 2 and used for limiting the maximum displacement distance of the primary guide plate 6 and the secondary guide plate 5 in the processes of extending and retracting, preventing the phenomenon of falling off due to overlarge displacement, and driving the whole body to move by the movement of the primary guide plate 6 or the secondary guide plate 5 when the primary guide plate 6 reaches the limiting position;
the driving module is arranged on the storage module 2 and comprises a primary driving unit for driving the guide plate main body to slide and a secondary driving unit for driving the guide plate main body to rotate, and the driving module is used for enabling the guide plate main body to generate displacement and rotate to adjust the posture;
an acquisition module: the air flow velocity and the attitude of the guide plate main body are measured, and the acquired signals are uploaded;
and the control module 16 is arranged on the storage module 2 and used for receiving the signal transmitted by the acquisition module and determining preset control information according to the signal and transmitting the control information to the drive module.
In practical application, the deflector body is provided with a primary deflector 6 and a secondary deflector 5 which are stored in the storage module 2, and the storage module 2 is arranged at the tail of a container 15 of truck goods, so that a small amount of space of the container 15 is occupied, as shown in fig. 1; as shown in fig. 2, which is a state of the air deflector when the automobile is not running or running at an ultra-low speed, the first-stage air deflector 6 and the second-stage air deflector 5 are both stored in the storage module 2, and simultaneously, the air deflector can also play a role in protecting the air deflector and other pedestrians; as shown in fig. 3, the first-stage air deflector 6 extends to a limit position, and at this time, the rear end of the first-stage air deflector 6 is attached to a limit module at the front end of the second-stage air deflector 5, so as to prevent the first-stage air deflector 6 from further extending, and at the same time, the first-stage air deflector 6 can also drive the second-stage air deflector 5 to extend; as shown in fig. 4, the drawing shows a state that the first-stage guide plate 6 drives the second-stage guide plate 5 to extend forward to reach the limit position of the second-stage guide plate 5 under the pushing of the multi-link 4, at this time, the rear end of the second-stage guide plate 5 is attached to the limit module at the front end of the storage device, the second-stage guide plate 5 is prevented from extending forward continuously, and meanwhile, the forward movement of the first-stage guide plate 6 is limited again, in the retracting process, the second-stage guide plate 5 is retracted first, and the first-stage guide plate 6 is retracted under the driving of the limit module; as shown in fig. 5, after the first-stage air deflector 6 and the second-stage air deflector 5 reach the extreme positions, the storage module 2 rotates around the lower end of the storage module by the extension and contraction of the first electronic air pressure lifting rod 1, so as to achieve the effect of adjusting the postures of the air deflectors; as shown in fig. 6, 12 rods of the multi-link 4 are connected end to end, the leftmost rod is connected with the second electronic pneumatic lifting rod 8, the rod pieces are connected through the double-headed rivet 9, the rod pieces can rotate around the connection position while the connection reliability is guaranteed, the rightmost end is connected with the roller 14 through the connecting rod 13, the second electronic pneumatic lifting rod 8 at the left end extends towards the middle, the multi-link 4 can be pushed to extend rightwards, and the guide plate is enabled to generate displacement and move towards the direction far away from the storage module 2; as shown in fig. 7, the first slide rail 10 and the second slide rail 12 are fixed at the rear end of the primary deflector 6, and the roller 14 can roll in parallel in the slide rails along with the movement of the multi-link 4; the storage module 2 is shown in fig. 8 at the rear of the cargo box 15, occupying part of the cargo box 15 space, and the control module 16 is also located in the storage module 2, shown hidden from view within the storage device, the deflector, multi-bar linkage 4 mechanism.
Specifically, the storage module 2 is mounted at the end of the truck bed 15 for storing the deflector body, as well as other modules such as the control module 16, the drive module, etc.;
the limiting module is arranged on the guide plate main body and used for limiting the maximum displacement distance between the primary guide plate 6 and the secondary guide plate 5 in the processes of extending and retracting, so that the phenomenon that the primary guide plate 6 and the secondary guide plate 5 fall off due to overlarge displacement is prevented, and in addition, when the primary guide plate 6 reaches the limiting position, the movement of the primary guide plate 6 (the secondary guide plate 5) can drive the movement of the secondary guide plate 5 (the primary guide plate 6);
the acquisition module is arranged at the front ends of the middle parts of the primary guide plate 6 and the secondary guide plate 5 and in the first electronic air pressure lifting rod 1 and the second electronic air pressure lifting rod 8, the former can measure the air flow rate, and the latter can measure the displacement and can upload data to the processor;
the control module 16 is arranged in the storage module 2, can receive signals transmitted by the sensor, determines preset control information according to the signals, and transmits the control information to the drive module;
the drive module is arranged in the storage module 2 and is divided into a first-stage drive unit and a second-stage drive unit, the drive module can receive signals transmitted by the control module 16 and drives the guide plate main body and the storage module 2 to move to corresponding positions, the first-stage drive unit mainly comprises a second electric pneumatic lifting rod and a multi-connecting-rod 4 mechanism, the first-stage drive unit drives the multi-connecting-rod 4 to stretch and contract by the second electric pneumatic lifting rod so as to enable the guide plate main body to generate displacement, and the second-stage drive unit drives the storage module 2 to rotate by the first electric pneumatic lifting rod so as to further adjust the posture of the guide plate main body;
the limiting module is arranged at the tail part of the first-stage guide plate 6, the front end and the tail end of the second-stage guide plate 5 and the front end of the storage module 2, and is mainly a limiting block 3 made of elastic materials and used for limiting the maximum displacement of the guide plate main body and preventing the guide plate main body from falling off; in addition, when the one-level guide plate 6 stretches out and reaches the position of maximum displacement, the motion that can drive second grade guide plate 5 through stopper 3 can also be crossed, after second grade guide plate 5 reachd extreme position, the motion that can drive one-level guide plate 6 of retrieving of second grade guide plate 5.
Furthermore, the guide plate main part is aluminum alloy material, and its corrosion resistance is high, and antirust property is high, and intensity is high, long service life, and proportion is little, can realize the meaning of lightweight.
Furthermore, the primary driving unit of the driving module specifically functions to drive the multi-link 4 mechanism to perform telescopic motion by the displacement of the second electronic air pressure lifting rod 8, so that the guide plate is displaced to achieve the purpose of adjusting the posture of the guide plate; the multi-connecting-rod 4 is provided with 12 rod pieces which can drive the primary guide plate 6 and the secondary guide plate 5 to realize maximum displacement; in the multi-connecting-rod 4, the rod pieces are connected with one another through double-headed rivets 9, so that the rod pieces can rotate and do not fall off; the multi-connecting-rod 4 and the first-level guide plate 6 are connected with a first slide rail 10 and a second slide rail 12 through a pulley 11, the pulley 11 comprises a connecting rod 13 and a roller 14, and the first slide rail 10 and the second slide rail 12 are welded at the rear end of the first-level guide plate 6.
Furthermore, the secondary driving module of the driving module specifically functions to adjust the posture of the guide plate by driving the storage device to rotate through the telescopic motion of the first electronic air pressure lifting rod 1.
Furthermore, the collection module is connected with the control module 16, wherein the main body is a sensor, and is divided into a flow rate collection submodule and an electronic air pressure lifting rod displacement collection submodule which are respectively used for detecting the air flow rate at the position of the main body of the guide plate and the telescopic displacement of the electronic air pressure lifting rod and transmitting the collected information to the control module 16; the flow velocity acquisition submodule has the specific function of detecting the flow velocity of the air at the position of the guide plate and transmitting the flow velocity to the control module 16 to judge the posture of the guide plate at the flow velocity; the electronic air pressure lifting rod displacement acquisition submodule has the specific function of detecting the displacement of the electronic air pressure lifting rod, and if the displacement length is different from the due displacement information output by the control module 16, the driving module continues to operate until the displacement of the electronic air pressure lifting rod reaches the expected assumption.
Furthermore, the control module 16 is a chip, and can receive the acquisition information of the acquisition module, store preset guide plate posture information, output corresponding guide plate posture information to the driving module through the flow rate acquisition information, and judge whether the guide plate reaches an expected posture again according to the displacement acquisition information of the electronic air pressure lifting rod, if not, continue to output driving information to the driving module;
further, store module 2 and be the cuboid box, can occupy certain packing box 15 space, use aluminium alloy material, the lower front end outer fringe links together through mobile hinge 7, and one end is connected with packing box 15 box through first electronic atmospheric pressure lifter in addition.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides an adjustable guide plate of truck rear portion which characterized in that includes:
the storage module is arranged at the tail end of a truck cargo box;
the guide plate main body is arranged on the storage module and comprises a first-stage guide plate and a second-stage guide plate which are connected in a sliding mode and used for guiding flow;
the limiting module is arranged on the guide plate main body and the storage module and used for limiting the maximum displacement distance of the primary guide plate and the secondary guide plate in the processes of extending and retracting, preventing the primary guide plate and the secondary guide plate from falling off due to overlarge displacement, and driving the primary guide plate or the secondary guide plate to move integrally when the primary guide plate reaches the limit position;
the driving module is arranged on the storage module and comprises a primary driving unit for driving the guide plate main body to slide and a secondary driving unit for driving the guide plate main body to rotate, and the driving module is used for enabling the guide plate main body to generate displacement and rotate to adjust the posture;
an acquisition module: the air flow velocity and the attitude of the guide plate main body are measured, and the acquired signals are uploaded;
and the control module is arranged on the storage module and used for receiving the signal transmitted by the acquisition module and determining preset control information according to the signal to transmit the control information to the drive module.
2. The truck tail adjustable deflector of claim 1, wherein the primary drive unit comprises:
the second electronic air pressure lifting rods are arranged in pairs and fixedly arranged on the storage module;
one end of the multi-connecting rod is rotatably connected with the output end of the second electronic air pressure lifting rod through a double-headed rivet, and pulleys arranged in pairs are mounted at the other end of the multi-connecting rod;
the first sliding rail is fixedly arranged at one end of the primary guide plate and matched with the pulley;
and the second sliding rail is fixedly arranged at one end of the primary guide plate and is matched with the pulley.
3. The truck tail adjustable deflector of claim 2, wherein the pulley comprises:
the connecting rod is fixedly arranged in the multiple connecting rods, and two ends of the connecting rod penetrate through the multiple connecting rods and extend to the outside;
and the roller wheels are rotatably arranged at the two ends of the connecting rod and are matched with the first sliding rail and the second sliding rail.
4. The truck tail adjustable deflector of claim 2, wherein the secondary drive unit comprises:
one end of the first electronic air pressure lifting rod is rotatably connected with the container, and the other end of the first electronic air pressure lifting rod is rotatably connected with the storage module;
and the hinge is arranged between the storage module and the container, and drives the storage module to rotate by taking the hinge as a center when the first electronic air pressure lifting rod stretches.
5. The truck tail adjustable deflector of claim 1, wherein the restraint module comprises:
and the limiting blocks are respectively arranged at the tail end of the first-stage guide plate, the two ends of the second-stage guide plate and the front end of the storage module.
6. The truck tail adjustable deflector of claim 5, wherein the stop block is made of an elastomeric material.
7. The truck tail adjustable deflector of claim 4, wherein the collection module comprises:
the flow velocity acquisition submodule is arranged on the first-stage guide plate and the second-stage guide plate, is used for detecting the flow velocity of the first-stage guide plate and the second-stage guide plate and transmitting the flow velocity to the control module to judge the posture of the first-stage guide plate and the second-stage guide plate at the flow velocity;
and the displacement acquisition submodule is arranged on the first electronic air pressure lifting rod and the second electronic air pressure lifting rod and is used for detecting the displacement of the first electronic air pressure lifting rod and the second electronic air pressure lifting rod, and if the displacement length is different from the due displacement information output by the control module, the driving module can continue to operate until the displacement of the first electronic air pressure lifting rod and the displacement of the second electronic air pressure lifting rod reach the set expectation.
8. The adjustable guide plate at the tail of the truck according to claim 7, wherein a chip is arranged in the control module and used for receiving the collection information of the collection module and storing preset guide plate posture information, the corresponding guide plate posture information is output to the driving module through the collection information of the flow velocity collection submodule, whether the guide plate main body reaches the expected posture is judged according to the collection information of the displacement collection submodule, and if the guide plate main body does not reach the expected posture, the driving information is continuously output to the driving module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210660663.0A CN115042883A (en) | 2022-06-13 | 2022-06-13 | Truck tail adjustable guide plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210660663.0A CN115042883A (en) | 2022-06-13 | 2022-06-13 | Truck tail adjustable guide plate |
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| CN115042883A true CN115042883A (en) | 2022-09-13 |
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| CN202210660663.0A Pending CN115042883A (en) | 2022-06-13 | 2022-06-13 | Truck tail adjustable guide plate |
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