A flow guiding device and a tractor truck

Abstract

The utility model provides a kind of flow guide device and tractor truck, flow guide device is set between the head of tractor truck and hang box and include frame;Frame is split structure and include main frame and side frame, main frame inside is equipped with accommodating space, can accommodate the gas cylinder between head and hang box;Side frame is set in the left side and right side of main frame, and with main frame detachable connection;Side frame can be pre-installed side mainboard, can cover the left side and right side of gas cylinder;Main frame and side frame split setting, make flow guide device can change from integral type installation into modular assembly;Side mainboard can be pre-installed on side frame in factory or workshop, when in situ, only need to connect side frame with main frame, greatly reduce the process and operation time of on-site installation, improve assembly efficiency;Accommodating space contains gas cylinder, side mainboard covers left side and right side of gas cylinder, forms wrapped flow guide structure to gas cylinder, reduces the vortex formed between head and hang box.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle aerodynamics technology, and in particular relates to a flow guiding device and a tractor truck. Background Technology

[0002] In the energy-saving design of tractor trucks, a frame is usually installed between the cab and the trailer to reduce wind resistance, with deflectors mounted on the sides of the frame. However, existing technologies have the following drawbacks: gas cylinders are located between the cab and the trailer, and the existing deflectors have limited coverage area, failing to effectively enclose and shield the gas cylinders. When airflow passes through this area, it directly impacts the exposed gas cylinders and their mounting structure, generating significant air vortices between the cab and the trailer, resulting in substantial vortex drag and weakening the drag-reducing effect of the deflectors. Furthermore, existing frames are mostly one-piece structures, requiring multiple deflectors to be installed on the frame on-site, a time-consuming and labor-intensive process that cannot achieve quick and convenient assembly. Utility Model Content

[0003] In view of this, the present invention provides a flow guide device and a towing truck to solve the problems in the prior art, such as the inability of the flow guide plate to form an effective and comprehensive wrap and shield for the gas cylinder, resulting in a large air vortex between the truck head and the trailer, which weakens the drag reduction effect of the flow guide plate, and the need to install multiple flow guide plates on the frame on site, which makes the process of installing the flow guide plate time-consuming and laborious.

[0004] This utility model provides a flow guiding device for towing a truck; the towing truck includes a cab, a trailer, and a gas cylinder disposed between the cab and the trailer; the flow guiding device is disposed between the cab and the trailer, and the flow guiding device includes a frame; the frame is a split structure and the frame includes: The main frame has an internal storage space for accommodating the gas cylinders; Side frames are provided on the left and right sides of the main frame, and the side frames and the main frame are detachably connected; a side main board can be pre-installed on the side frame, and the side main board is used to cover the left and right sides of the gas cylinder.

[0005] Further optionally, the main frame is provided with support arms on both the left and right sides, and the support arms extend along the length direction of the main frame; the side frame and the main frame are connected by the support arms. The connection position of the side frame and the support arm can be adjusted according to the width of the tractor truck; or, the length of the support arm can be adjusted according to the width of the tractor truck.

[0006] Further optionally, when the connection position of the side frame and the support arm is adjustable, the support arm is provided with a first connecting part, and the side frame is provided with a connector on the side away from the side main board; one end of the connector is detachably connected to the side frame, and the other end of the connector extends away from the side main board; the connector is provided with a plurality of second connecting parts, and the plurality of second connecting parts are spaced apart in the extending direction of the connector. The first connecting part and the second connecting part cooperate to realize the connection between the support arm and the side frame; The connection position of the side frame and the support arm can be adjusted by engaging the first connecting part and the second connecting part at different positions of the connecting member.

[0007] Further optionally, when the length of the support arm is adjustable, the support arm includes a main support arm and a secondary support arm. One end of the main support arm is fixedly connected to the main frame, and the other end of the main support arm and one end of the secondary support arm are telescopically connected along the length direction of the main support arm. The other end of the secondary support arm is connected to the side frame. The overall length of the main support arm and the secondary support arm can be adjusted by extending and retracting the secondary support arm relative to the main support arm.

[0008] Further optionally, the side frame is provided with multiple frame openings; The frame opening corresponding to the position of the air intake of the tractor truck can be used as the grille mounting opening, and the grille mounting opening is used to install the air intake grille. According to the position of the gas cylinder, the frame opening corresponding to the position of the gas cylinder can be used as the gas filling port, and the gas filling port is used to add gas into the gas cylinder; The side motherboard is removably covered at the remaining frame openings; The remaining frame openings are those other than the grille mounting opening and the air filling opening among the multiple frame openings.

[0009] Further optionally, a gas filling plate is provided at the gas filling port, and the gas filling plate and the side frame are closable for opening or covering the gas filling port; The gas filling port can be opened or closed by controlling the movement of the gas filling plate.

[0010] Further optionally, a locking mechanism is provided between the gas filling plate and the side frame, the locking mechanism having an open state and a locked state; When the locking mechanism is in the released state, the gas filling plate opens the gas filling port; When the locking mechanism is in the locked state, the gas filling plate covers the gas filling port.

[0011] Further optionally, the remaining frame openings include a plurality of first frame openings and a plurality of second frame openings, both of which are rectangular; the length of the first frame opening is equal to the length of the second frame opening, and the width of the first frame opening is less than the width of the second frame opening. Multiple first frame openings and grille mounting openings are arranged in the same column, and multiple second frame openings and gas filling ports are arranged in the same column; The side motherboard includes a first side motherboard and a second side motherboard. The size of the first side motherboard is the same as the size of the first frame opening, and the size of the second side motherboard is the same as the size of the second frame opening.

[0012] Further optionally, the remaining frame openings also include a plurality of third frame openings, the third frame openings being rectangular; the length of the third frame opening is equal to the length of the second frame opening, and the width of the third frame opening is less than the width of the second frame opening; Multiple third frame ports are set in the same column; The side main board includes a third side main board, which includes a straight segment and an arc segment. The straight segment covers a portion of the third frame opening, and the arc segment includes a first end and a second end disposed opposite to each other. The first end is connected to the straight segment, and the second end extends away from the main frame in the length direction of the main frame.

[0013] Further optionally, the second end of the third side main board is provided with a connecting seat, the connecting seat having a through hole; a support rod is inserted through the through hole, the support rod extending along the length direction of the third side main board; the support rod and the side frame are connected by a bracket.

[0014] Further optionally, a base frame is provided at the bottom of the main frame, and the base frame is fixedly connected to the main frame; The underframe is used to be mounted on the front beam of the tractor truck and detachably connected to the front beam; or, the underframe is used to be mounted on the gas cylinder base of the tractor truck and detachably connected to the gas cylinder base.

[0015] Further optionally, a lower connecting rod is connected between the lower ends of the base frame and the side frame; multiple lower connecting rods are provided, and the multiple lower connecting rods are staggered in space.

[0016] Further optionally, side plates are provided on the left and right sides of the main frame, and the side plates are located above the main side plate; The lower end of the side sub-plate and the upper end of the side frame are detachably connected, and an upper connecting rod is connected between the side sub-plate and the main frame; multiple upper connecting rods are provided, and the multiple upper connecting rods are staggered in space.

[0017] Further optionally, the frame further includes a top frame disposed on top of the main frame, and the top frame and the main frame are detachably connected; A top flow guide can be pre-installed on the top frame, and the top flow guide is used to cover the top of the gas cylinder.

[0018] Further optionally, the top fairing includes a windward plate and skirts disposed on the left and right sides of the windward plate; the rear end of the windward plate is hinged to the top frame, and the windward plate is inclined downward from back to front; The skirt is located on the side of the side sub-plate away from the main frame, and the skirt covers the upper end of the side sub-plate.

[0019] Further optionally, the top frame includes a top frame, a main column, and a secondary column; the top frame and the main frame are detachably connected, the main column is located on the rear side of the top frame, and the lower end of the main column is hinged to the top frame; the main column has a column hole, the lower end of the secondary column passes through the column hole, and the upper end of the secondary column is hinged to the rear end of the windward plate; the secondary column can move up and down relative to the main column.

[0020] Further optionally, the main column is provided with a plurality of third connecting parts, and the plurality of third connecting parts are spaced apart in the extending direction of the main column; The sub-column is provided with a plurality of fourth connecting parts, which are spaced apart in the extending direction of the sub-column. The third and fourth connecting parts cooperate to connect the main column and the secondary column; The connection positions of the main column and the secondary column can be adjusted by aligning the third and fourth connecting parts at different locations.

[0021] This utility model also provides a tractor truck, including a cab, a trailer, a gas cylinder, and a flow guiding device as described above; the gas cylinder and the flow guiding device are both disposed between the cab and the trailer, the main frame surrounds the outside of the gas cylinder, and the side main plate covers the left and right sides of the gas cylinder.

[0022] Compared with the prior art, the main advantages of this utility model are: (1) The frame adopts a split structure with detachable main frame and side frame, which enables the flow guide device to be transformed from an integral installation to modular assembly; the side frame can be pre-installed in the factory or workshop to form an independent pre-installed module; during on-site installation, it is only necessary to connect the pre-installed side frame to the main frame, which greatly reduces the on-site installation process and operation time, reduces the installation difficulty, and thus effectively improves the assembly efficiency. (2) By setting up a space inside the main frame to accommodate the gas cylinder, and combining it with the side main plate pre-installed on the side frame and used to cover the left and right sides of the gas cylinder, the air guide device together forms a three-sided (front, left, right) enveloping air guide structure for the gas cylinder between the front of the vehicle and the trailer. This structure can smoothly guide the airflow around the gas cylinder, greatly reducing the size and intensity of the vortex formed between the front of the vehicle and the trailer, thereby effectively reducing the air resistance of the whole vehicle and improving fuel economy. Attached Figure Description

[0023] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0025] Figure 1a and Figure 1b A schematic diagram of the assembly structure of an embodiment of the flow guiding device provided by this utility model; Figure 2a and Figure 2b An exploded structural diagram of an embodiment of the flow guiding device provided by this utility model; Figure 3 A schematic diagram of the main frame, support arm, and base frame provided in this utility model; Figure 4a A schematic diagram of the assembly structure of the side frame and side motherboard embodiment provided by this utility model; Figure 4b Exploded structural diagram of the side frame and side main board embodiment provided by this utility model; Figure 5a A schematic diagram of the assembly structure of the top frame and top fairing provided in this utility model; Figure 5b Exploded structural diagram of the top frame and top shroud embodiment provided by this utility model; Figure 6a and Figure 6b A schematic diagram of the structure of an embodiment of the connector provided by this utility model; In the picture: 11-Main frame; 111-Accommodation space; 12-Support arm; 121-First connecting part; 13-Base frame; 21-Side frame; 211-First frame opening; 212-Second frame opening; 213-Third frame opening; 214-Grate mounting opening; 215-Air inlet; 22-Side main board; 221-First side main board; 222-Second side main board; 223-Third side main board; 2231-Straight section; 2232-Arc section; 23-Connector; 231-First connecting plate; 232-Second connecting plate; 2321-Second connecting part; 241-Air intake grille; 242-Air inlet plate; 25-Side sub-plate; 261-Connecting seat; 262-Support rod; 263-Bracket; 271-Upper connecting rod; 272-Lower connecting rod; 31-Top frame; 311-Top frame; 312-Main column; 313-Secondary column; 314-Third connecting part; 315-Fourth connecting part; 32-Top fairing; 321-Wind vane; 322-Skirt; 41-Gas cylinder; 42-Gas cylinder base. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. The singular forms “a,” “said,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise; “multiple” generally includes at least two, but does not exclude the inclusion of at least one.

[0028] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0029] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0030] In existing tractor trucks, wind resistance is reduced by setting a frame and deflectors between the cab and the trailer; however, the deflectors cannot effectively enclose and shield the gas cylinders, resulting in large air vortices between the cab and the trailer, which weakens the drag reduction effect of the deflectors; the frames are mostly one-piece structures, requiring multiple deflectors to be installed on the frame on site, which is time-consuming and labor-intensive. This utility model creatively provides a flow guiding device for towing trucks; the flow guiding device is disposed between the cab and trailer of the towing truck and includes a frame; the frame is a split structure and includes a main frame and side frames, the main frame has an internal accommodating space to accommodate the gas cylinder between the cab and the trailer; the side frames are disposed on the left and right sides of the main frame and are detachably connected to the main frame; a side main plate can be pre-installed on the side frame to cover the left and right sides of the gas cylinder; The main frame and side frames are set separately, which allows the air guiding device to be transformed from an integral installation to modular assembly. The side main board can be pre-installed on the side frame in the factory or workshop. On site, only the side frame needs to be connected to the main frame, which greatly reduces the on-site installation process and operation time and improves assembly efficiency. The storage space accommodates the gas cylinder, and the side main board covers the left and right sides of the gas cylinder, forming a wrap-around air guiding structure for the gas cylinder, reducing the vortex formed between the front of the vehicle and the trailer.

[0031] Example 1 As shown in Figure 1 to Figure 6b As shown, this embodiment provides a flow guiding device for towing a truck; the towing truck includes a cab, a trailer, and a gas cylinder 41 disposed between the cab and the trailer; the flow guiding device is disposed between the cab and the trailer, and the flow guiding device includes a frame; the frame is a split structure and the frame includes: The main frame 11 has an internal storage space 111 for accommodating the gas cylinder 41; Side frame 21; it is set on the left and right sides of the main frame 11, and the side frame 21 and the main frame 11 are detachably connected; a side main board 22 can be pre-installed on the side frame 21, and the side main board 22 is used to cover the left and right sides of the gas cylinder 41.

[0032] Thus, the main frame 11 and the side frame 21 are set separately, and the side frame 21 can be pre-installed with the side main board 22. On site, only the side frame 21 needs to be set on the left and right sides of the main frame 11 and connected to the main frame 11. This reduces the on-site installation process and shortens the on-site operation time. The main frame 11 surrounds the outside of the gas cylinder 41, and the accommodating space 111 can accommodate the gas cylinder 41. The side main board 22 can cover the left and right sides of the gas cylinder 41. In this way, a side flow guiding structure is formed on the left and right sides of the gas cylinder 41. Under the action of the side flow guiding structure, the airflow bypasses the gas cylinder 41, reducing the vortex formed between the truck head and the trailer, and reducing the wind resistance of the towing truck.

[0033] Specifically, the main frame 11 is a three-dimensional structure. The width direction of the main frame 11 and the width direction of the tractor truck are both parallel to the left and right directions. The length direction of the main frame 11 and the length direction of the tractor truck are both parallel to the front and back directions. The height direction of the main frame 11 and the height direction of the tractor truck are both parallel to the up and down directions. The side frame 21 is a planar structure. The length direction of the side frame 21 is parallel to the length direction of the tractor truck. The width direction of the side frame 21 is parallel to the height direction of the tractor truck.

[0034] The connection structure between the side frame 21 and the main frame 11 is described below. Support arms 12 are provided on both the left and right sides of the main frame 11, and the support arms 12 extend along the length of the main frame 11. The side frame 21 and the main frame 11 are connected by the support arms 12. Specifically, the support arm 12 and the main frame 11 are integrally formed, or one end of the support arm 12 is fixedly connected to the main frame 11; the other end of the support arm 12 is detachably connected to the side frame 21; multiple support arms 12 are provided, and multiple support arms 12 are spaced apart in the length direction and height direction of the main frame 11, and the side frame 21 and the main frame 11 are connected through multiple support arms 12. Furthermore, the connection position between the side frame 21 and the support arm 12 is adjustable; the connection position between the side frame 21 and the support arm 12 can be adjusted according to the width of the towing truck. By connecting the side frame 21 to the main frame 11 via the support arm 12 and setting the connection position to be adjustable, the overall width of the air guide device can be precisely adapted to the specific width of different models of tractor trucks. This allows the same air guide device to be applicable to a wider range of vehicle models, greatly improving the product's versatility and solving the problem of needing to customize air guide devices of different specifications to adapt to different models of tractor trucks in the existing technology. This effectively reduces the costs of production, manufacturing, and inventory management. The adjustable design allows installers to make fine adjustments on-site to compensate for installation errors. It simplifies the installation alignment process, ensuring that the side frame 21 (and its side main plate 22) can always be in the optimal air guide position and smoothly transition with the side of the vehicle body, thus better conforming to the overall appearance of the tractor truck and achieving a better air guide effect.

[0035] The following further explains the adjustable connection position between the side frame 21 and the support arm 12. The support arm 12 is provided with a first connecting part 121, and the side frame 21 is provided with a connector 23 on the side away from the side main board 22. One end of the connector 23 is detachably connected to the side frame 21, and the other end of the connector 23 extends away from the side main board 22. The connector 23 is provided with a plurality of second connecting parts 2321, and the plurality of second connecting parts 2321 are spaced apart in the extending direction of the connector 23. The first connecting part 121 and the second connecting part 2321 cooperate to realize the connection between the support arm 12 and the side frame 21; By engaging the first connecting part 121 and the second connecting part 2321 at different positions of the connector 23, the connection position of the side frame 21 and the support arm 12 can be adjusted. Specifically, the first connecting part 121 is a first connecting hole, and the second connecting part 2321 is a second connecting hole; the bolt is passed through the first connecting hole and the second connecting hole, and the nut and the bolt are connected, thereby connecting the support arm 12 and the side frame 21.

[0036] The specific structure of connector 23 is described below. Connector 23 is T-shaped and includes a first connecting plate 231 and a second connecting plate 232. The first connecting plate 231 and the side frame 21 are detachably connected. The structure formed by the second connecting plate 232 is adapted to the cross-sectional structure of the support arm 12. One end of the second connecting plate 232 is connected to the first connecting plate 231, and the other end of the second connecting plate 232 extends away from the first connecting plate 231. The second connecting plate 232 is sleeved on the outside of the support arm 12. The second connecting plate 232 forms a plurality of second connecting parts 2321, which are spaced apart in the extending direction of the second connecting plate 232. Preferably, the second connecting plate 232 is arranged in a U-shape or annular shape.

[0037] The following describes the frame openings of the side frame 21. The side frame 21 has multiple frame openings, which are spaced apart in the length and width directions of the side frame 21. According to the position of the air intake of the tractor truck, the frame opening corresponding to the position of the air intake can be used as the grille mounting port 214. The grille mounting port 214 is used to set the air intake grille 241 to achieve matching for different models of tractor trucks. The air intake grille 241 forms an air intake channel, which connects the accommodating space 111 and the environment where the tractor truck is located. Air from the environment where the tractor truck is located can enter the accommodating space 111 through the air intake channel. The air intake grille 241 can filter impurities in the air. According to the position of the gas cylinder 41, the frame opening corresponding to the position of the gas cylinder 41 can be used as the gas filling port 215. The gas filling port 215 is used to add gas into the gas cylinder 41 to achieve matching for different vehicle models. The remaining frame openings are detachably covered with side motherboards 22; Among them, the remaining frame openings are the frame openings other than the grille mounting opening 214 and the gas filling opening 215 among the multiple frame openings; Thus, by pre-setting multiple universal "frame openings" on the side frame 21, the "grille mounting port 214" can be flexibly specified according to the air intake position of different models of tractor trucks, ensuring smooth engine air intake; at the same time, the "filling port 215" can be flexibly specified according to the actual layout of the gas cylinder 41, ensuring convenient maintenance; this allows a single flow guide device structure to be used in a variety of different models of tractor trucks, greatly improving the product's adaptability and versatility; while achieving the core function of fully enclosed flow guide (by installing the side main board 22 in the remaining frame openings), it cleverly avoids structural conflicts between the flow guide device and the inherent functional components (air intake system, filling port 215) of the tractor truck; there is no need to redesign the overall structure for different models of tractor trucks, the problem can be solved simply by specifying the different uses of the frame openings, simplifying the design and production process; the clearly defined "filling port 215" ensures that the gas cylinder 41 can be maintained without disassembling the entire flow guide device, greatly improving maintainability.

[0038] Specifically, each frame opening is provided with a frame body, and the frames at the air intake grille 241 and grille mounting opening 214 are detachably connected; the side main plate 22 and the corresponding frame body at the frame opening are detachably connected.

[0039] The following describes the structure required to open and cover the gas filling port 215. A gas filling plate 242 is provided at the gas filling port 215. The gas filling plate 242 and the side frame 21 are foldably connected to open or close the gas filling port 215. By controlling the movement of the gas filling plate 242, the gas filling port 215 can be opened or covered; when the gas filling port 215 is open, maintenance operations can be performed on the gas cylinder 41; this does not affect the gas filling and normal operation of the gas cylinder 41, nor does it affect the appearance of the vehicle or the guiding effect of the flow guiding device. When the gas cylinder 41 needs to be refilled, the refill plate 242 can be controlled to move away from the refill port 215, so that the refill plate 242 opens the refill port 215; when the gas cylinder 41 does not need to be refilled, the refill plate 242 can be controlled to move closer to the refill port 215, so that the refill plate 242 covers the refill port 215. Specifically, the gas filling plate 242 is rotatably mounted on the frame at the gas filling port 215. The rotation axis of the gas filling plate 242 is in the vertical direction and is located at one end of the length direction of the gas filling plate 242. By operating the other end of the length direction of the gas filling plate 242, the gas filling plate 242 can be moved, thereby opening or covering the gas filling port 215.

[0040] To address the issue that the gas filling plate 242 is prone to opening the gas filling port 215 due to vibration during the operation of the tractor truck, a locking mechanism is provided between the gas filling plate 242 and the side frame 21. The locking mechanism has an open state and a locked state. When the locking mechanism is in the released state, the gas filling plate 242 opens the gas filling port 215; When the locking mechanism is in the locked state, the gas filling plate 242 covers the gas filling port 215; Specifically, the locking mechanism includes a locking tongue and a locking groove. The locking tongue is rotatably mounted on the gas filling plate 242. The locking tongue is located at the other end of the length direction of the gas filling plate 242 and on the side of the gas filling plate 242 near the side frame 21. The locking groove is formed on the frame at the gas filling port 215. By rotating the locking tongue, the locking tongue can be embedded in the locking groove, thereby locking the mechanism in a locked state; or the locking tongue can be disengaged from the locking groove, thereby releasing the locking mechanism.

[0041] The structure of the frame opening is described below. The remaining frame openings include multiple first frame openings 211 and multiple second frame openings 212. Both the first frame openings 211 and the second frame openings 212 are rectangular. The length of the first frame opening 211 is equal to the length of the second frame opening 212, and the width of the first frame opening 211 is less than the width of the second frame opening 212. Multiple first frame openings 211 and grille mounting openings 214 are arranged in the same vertical column, and multiple second frame openings 212 and gas filling ports 215 are arranged in the same vertical column; The side motherboard 22 includes a first side motherboard 221 and a second side motherboard 222. The size of the first side motherboard 221 is the same as the size of the first frame port 211, and the size of the second side motherboard 222 is the same as the size of the second frame port 212. Specifically, the first motherboard 221 measures 400mm*900mm, and the second motherboard 222 measures 700mm*900mm.

[0042] Furthermore, the remaining frame openings also include multiple third frame openings 213, which are rectangular; the length of the third frame opening 213 is equal to the length of the second frame opening 212, and the width of the third frame opening 213 is less than the width of the second frame opening 212. Multiple third frame ports 213 are set in the same vertical column; The side main board 22 includes a third side main board 223, which includes a straight segment 2231 and an arc segment 2232. The straight segment 2231 covers a portion of the third frame opening 213, and the arc segment 2232 includes a first end and a second end that are disposed opposite to each other. The first end is connected to the straight segment 2231, and the second end extends away from the main frame 11 along the length direction of the main frame 11. Specifically, the first end and the second end are disposed opposite to each other along the length direction of the third side main board 223, and the size of the third side main board 223 is 400mm*900mm. The side panel 22 includes three specifications: the first side panel 221, the second side panel 222, and the third side panel 223. The first side panel 221 and the second side panel 222 are both straight plates with dimensions of 400mm*900mm and 700mm*900mm respectively. The size of the first side panel 221 corresponds to the size of the air intake grille 241, and the size of the second side panel 222 corresponds to the size of the air filling plate 242. The third side panel 223 is a plate with an arc segment 2232, with a size of 400mm*900mm. The splicing of the three specifications of side panels 22 greatly reduces the mold of the side panel 22, and at the same time, it can flexibly adapt to the air intake and air filling port 215 of different models of tractor trucks.

[0043] The connection method between the third-side main board 223 and the side frame 21 is described below. The second end of the third-side main board 223 is provided with a connecting seat 261, which has a through hole. A support rod 262 is inserted into the through hole. The support rod 262 extends along the length of the third-side main board 223. The support rod 262 and the side frame 21 are connected by a bracket 263. In this way, multiple first-side mainboards 221, multiple second-side mainboards 222, and multiple third-side mainboards 223 are spliced ​​together and cover the left and right sides of the gas cylinder 41; this can greatly reduce mold costs and make it easier to flexibly adjust the air intake grille 241 and the gas filling plate 242 according to the position of the air intake and the gas cylinder 41, thus achieving compatibility with the vast majority of models on the market. Specifically, multiple connectors 261 are provided, and the multiple connectors 261 are spaced apart along the length of the third-side main board 223, and each connector 261 has a through hole.

[0044] The following describes the fixing position and fixing method of the main frame 11. The bottom of the main frame 11 is provided with a base frame 13, which is fixedly connected to the main frame 11. The underframe 13 is used to be mounted on the front beam of the tractor truck and detachably connected to the front beam; or, the underframe 13 is used to be mounted on the gas cylinder base 42 of the tractor truck and detachably connected to the gas cylinder base 42. Thus, the underframe 13 provides a solid and reliable bottom support for the entire air guide device, effectively transferring the forces borne by the main frame 11 (especially vibrations and airflow impacts during driving) to the robust front beam of the tractor truck or the dedicated gas cylinder base 42 through the underframe 13. This greatly enhances the overall rigidity and connection stability of the air guide device, preventing it from loosening or being damaged due to long-term vibration. Two optional mounting bases (front beam or gas cylinder base 42) are provided, allowing the air guide device to adapt to the chassis structure of different models of tractor trucks. Regardless of the front beam structure of the tractor truck or whether it is equipped with a dedicated gas cylinder base 42, a suitable mounting point can be found, which further broadens the application scenarios of the product and solves the installation problems caused by differences in the chassis structure of tractor trucks.

[0045] Specifically, the underframe 13 and the main frame 11 are integrally formed, or the underframe 13 and the main frame 11 are fixedly connected; the tractor truck has a front beam and a rear beam, the front beam is used to set the gas cylinder 41, the rear beam is used to set the trailer box, and the gas cylinder base 42 is used to fix the gas cylinder 41.

[0046] The connection method between the base frame 13 and the side frame 21 is described below. A lower connecting rod 272 is connected between the lower ends of the base frame 13 and the side frame 21. Multiple lower connecting rods 272 are provided and are staggered in space, so that the side frame 21 and the main frame 11 are reliably and stably connected. Thus, multiple lower connecting rods 272 are staggered between the underframe 13 and the side frame 21, forming one or more triangular stable structures together. This structure has excellent mechanical stability, effectively resisting forces and torques from different directions, significantly enhancing the overall rigidity and deformation resistance of the lower part of the flow guide device. The staggered lower connecting rods 272 evenly distribute the force on the side frame 21 to the underframe 13, avoiding stress concentration. This is crucial for coping with the continuous bumps and impacts during the towing truck's operation, effectively preventing structural fatigue damage and ensuring the reliability and durability of the flow guide device under long-term use.

[0047] In addition, side sub-plates 25 are provided on the left and right sides of the main frame 11, and the side sub-plates 25 are located above the side main plate 22. Furthermore, the lower end of the side plate 25 and the upper end of the side frame 21 are detachably connected, and an upper connecting rod 271 is connected between the side plate 25 and the main frame 11; multiple upper connecting rods 271 are provided, and multiple upper connecting rods 271 are staggered in space, thereby making the side plate 25 and the main frame 11 reliably and stably connected. Thus, the side sub-plate 25, located above the side main plate 22, further expands the longitudinal coverage area of ​​the fairing, enabling it to more smoothly guide airflow from the upper part of the cab to the trailer, more effectively eliminating vortices in this area, and achieving better aerodynamic performance and fuel economy. The upper connecting rod 271 forms an upper spatial support network between the main frame 11 and the side sub-plate 25. It echoes the structure of the lower connecting rod 272, together forming a complete spatial truss system that tightly connects the main frame 11, the side frame 21 (through the side sub-plate 25), and the underframe 13, making the entire air guiding device a highly rigid whole, greatly improving its shape retention and stability under high-speed airflow impact.

[0048] The following describes the top frame 31 and the top fairing 32. The frame also includes the top frame 31, which is located on top of the main frame 11 and is detachably connected to the main frame 11. A top deflector 32 can be pre-installed on the top frame 31, and the top deflector 32 is used to cover the top of the gas cylinder 41; Thus, the main frame 11 and the top frame 31 are set separately, and the top frame 31 can be pre-installed with the top deflector 32; on site, only the top frame 31 needs to be set on top of the main frame 11 and connected to the main frame 11; this reduces the on-site installation procedures and shortens the on-site operation time; the top deflector 32 can at least cover the top of the gas cylinder 41, thus forming an upper deflector structure above the gas cylinder 41. Under the action of the upper deflector structure, the airflow bypasses the gas cylinder 41, reducing the vortex formed between the truck head and the trailer; the top deflector 32 adopts a streamlined design, which helps to reduce the wind resistance of the towing truck.

[0049] Furthermore, the top fairing 32 includes a windward plate 321 and skirt plates 322 disposed on the left and right sides of the windward plate 321; the rear end of the windward plate 321 is hinged to the top frame 31, and the windward plate 321 is inclined downward from back to front. The skirt panel 322 is located on the side of the side sub-plate 25 away from the main frame 11, and the skirt panel 322 covers the upper end of the side sub-plate 25; Thus, the side main plate 22 on the left side of the main frame 11, the side auxiliary plate 25 on the left side of the main frame 11, the side main plate 22 on the right side of the main frame 11, the side auxiliary plate 25 on the right side of the main frame 11, and the top guide shroud 32 on the top of the main frame 11 together constitute the air guiding structure that surrounds the gas cylinder 41. This air guiding structure can cover the gaps on the left, right, and top sides between the truck head and the trailer, fully covering the gas cylinder 41 and having a good air guiding effect. Under the action of this air guiding structure, the airflow bypasses the gas cylinder 41, reducing the vortex formed between the truck head and the trailer, reducing the wind resistance of the tractor truck, and achieving fuel savings (fuel oil / gas, etc.) of 5% to 10%.

[0050] The underframe 13 is connected to the front beam of the tractor truck or the gas cylinder base 42. The main frame 11 is fixedly connected to the underframe 13. The side frame 21, the top frame 31, and the side sub-plate 25 are all detachably connected to the main frame 11. The side frame 21 is detachably equipped with a side main plate 22, and the top frame 31 is detachably equipped with a top deflector 32. In this way, the deflector device can be set as a whole between the cab and the trailer, and the connection is reliable and stable. The deflector device is not connected to the cab or the trailer, so it will not affect the cab's tilting and maintenance, nor will it affect the trailer's slinging and turning operations.

[0051] The specific structure of the top frame 31 is described below. The top frame 31 includes a top frame 311, a main column 312, and a secondary column 313. The top frame 311 and the main frame 11 are detachably connected. The main column 312 is located on the rear side of the top frame 311, and the lower end of the main column 312 is hinged to the top frame 311. The main column 312 has a column hole, and the lower end of the secondary column 313 passes through the column hole. The upper end of the secondary column 313 is hinged to the rear end of the windward plate 321. The secondary column 313 can move up and down relative to the main column 312. Thus, through the double-hinged structure of "the lower end of the main column 312 is hinged to the top frame 311" and "the upper end of the secondary column 313 is hinged to the rear end of the wind vane 321", and allowing "the secondary column 313 to move up and down relative to the main column 312", a highly efficient tilt adjustment mechanism is formed. The up and down movement of the secondary column 313 will directly push or pull the rear end of the wind vane 321, thereby continuously and smoothly changing the tilt angle of the wind vane 321 relative to the horizontal plane. This allows users to precisely adjust the top guide vane 32 to the angle with the best drag reduction effect according to the actual airflow requirements. The adjustable angle of the wind vane 321 allows its front end to more accurately align with trailers of different heights. By adjusting it, the leading edge of the wind vane 321 can be smoothly transitioned to the top of the trailer, effectively filling the gap between the front of the vehicle and the top of the trailer, minimizing airflow separation and vortex generation in this area, thereby achieving a drag reduction effect superior to a fixed-angle design.

[0052] Furthermore, the main column 312 is provided with a plurality of third connecting parts 314, which are spaced apart in the extending direction of the main column 312. The sub-column 313 is provided with a plurality of fourth connecting parts 315, which are spaced apart in the extending direction of the sub-column 313. The third connecting part 314 and the fourth connecting part 315 cooperate to realize the connection between the main column 312 and the auxiliary column 313; By engaging the third connecting part 314 and the fourth connecting part 315 at different positions, the connection position of the main column 312 and the secondary column 313 can be adjusted.

[0053] Thus, by selecting the third connecting part 314 and the fourth connecting part 315 at different positions for cooperation, the telescopic length of the auxiliary column 313 and the main column 312 can be fixed at different, preset, and precise positions. This mechanical interlocking method provides a more robust and reliable connection than friction locking and other methods, avoiding loosening that may occur under long-term vibration. The design provides a series of clear and visible fixing points, enabling operators to quickly and accurately lock the top guide shroud 32 at one of the commonly used or proven optimal angles, simplifying the adjustment process and reducing the time cost of repeated debugging.

[0054] In summary, by comprehensively covering the gap between the tractor and trailer and the gas cylinder 41 with the air guide device, the vortex resistance formed between the tractor and trailer is effectively reduced, significantly lowering the overall wind resistance of the tractor truck and improving fuel efficiency. The multiple side main plates 22 are spliced ​​together, allowing the position of the side frame 21 relative to the main frame 11 to be adjusted according to the width of the tractor truck, making it adaptable to most models on the market and greatly improving the product's versatility. The main frame 11 and side frame 21 are separately designed, facilitating the pre-installation of the side main plates 22 on the side frame 21 and reducing on-site installation procedures. The air guide device is not connected to the tractor or trailer, and the gas filling plate 242 is detachably located at the gas filling port 215, facilitating the daily operation and maintenance of the tractor truck without affecting its normal functions. The modular production method reduces mold costs and improves the product's market competitiveness.

[0055] This embodiment also provides a tractor truck, including a cab, a trailer, a gas cylinder 41, and a flow guiding device as described above; the gas cylinder 41 and the flow guiding device are both disposed between the cab and the trailer, the main frame 11 surrounds the outside of the gas cylinder 41, and the side main plate 22 covers the left and right sides of the gas cylinder 41.

[0056] Example 2 Unlike Embodiment 1, the length of the support arm 12 is adjustable, and the length of the support arm 12 can be adjusted according to the width of the towing truck; Furthermore, the support arm 12 includes a main support arm and a secondary support arm. One end of the main support arm is fixedly connected to the main frame 11, and the other end of the main support arm and one end of the secondary support arm are telescopically connected along the length of the main support arm. The other end of the secondary support arm is connected to the side frame 21. By extending and retracting the secondary support arm relative to the main support arm, the overall length of the main support arm and the secondary support arm can be adjusted so that the guide device can be applied to different models of tractor trucks, better fit the overall appearance of the tractor truck, and achieve a better guide effect. By connecting the side frame 21 to the main frame 11 via the support arm 12, and setting the length of the support arm 12 to be adjustable, the overall width of the air guide device can be precisely adapted to the specific width of different models of tractor trucks. This allows the same air guide device to be applicable to a wider range of vehicle models, greatly improving the product's versatility and solving the problem of needing to customize air guide devices of different specifications to adapt to different models of tractor trucks in the existing technology. This effectively reduces the costs of production, manufacturing, and inventory management. The adjustable design allows installers to make fine adjustments on-site to compensate for installation errors. It simplifies the installation alignment process, ensuring that the side frame 21 (and its side main plate 22) can always be in the optimal air guide position and smoothly transition with the side of the vehicle body, thus better conforming to the overall appearance of the tractor truck and achieving a better air guide effect.

[0057] Exemplary embodiments of this disclosure have been specifically shown and described above. It should be understood that this disclosure is not limited to the detailed structures, arrangements, or implementations described herein; rather, this disclosure is intended to cover various modifications and equivalent arrangements contained within the spirit and scope of the appended claims.

Claims

1. A flow guiding device for towing a truck; said towing truck comprising a cab, a trailer, and a gas cylinder (41) disposed between said cab and trailer; characterized in that, The flow guiding device is used to be disposed between the tractor head and the trailer, and the flow guiding device includes a frame; the frame is a split structure and the frame includes: The main frame (11) has an internal accommodating space (111) for accommodating the gas cylinder (41); Side frame (21); it is disposed on the left and right sides of the main frame (11), and the side frame (21) and the main frame (11) are detachably connected; a side main board (22) can be pre-installed on the side frame (21), and the side main board (22) is used to cover the left and right sides of the gas cylinder (41).

2. The flow guiding device according to claim 1, characterized in that, The main frame (11) is provided with support arms (12) on both the left and right sides, and the support arms (12) extend along the length direction of the main frame (11); the side frame (21) and the main frame (11) are connected by the support arms (12); The connection position of the side frame (21) and the support arm (12) can be adjusted according to the width of the tractor truck; or, the length of the support arm (12) can be adjusted according to the width of the tractor truck.

3. The flow guiding device according to claim 2, characterized in that, When the connection position of the side frame (21) and the support arm (12) is adjustable, the support arm (12) is provided with a first connecting part (121), and the side frame (21) is provided with a connector (23) on the side away from the side main board (22); one end of the connector (23) is detachably connected to the side frame (21), and the other end of the connector (23) extends away from the side main board (22); the connector (23) is provided with a plurality of second connecting parts (2321), and the plurality of second connecting parts (2321) are spaced apart in the extending direction of the connector (23); The first connecting part (121) and the second connecting part (2321) cooperate to realize the connection between the support arm (12) and the side frame (21); by making the first connecting part (121) and the second connecting part (2321) at different positions of the connector (23) cooperate, the connection position of the side frame (21) and the support arm (12) can be adjusted. When the length of the support arm (12) is adjustable, the support arm (12) includes a main support arm and a secondary support arm. One end of the main support arm is fixedly connected to the main frame (11), and the other end of the main support arm and one end of the secondary support arm are telescopically connected along the length direction of the main support arm. The other end of the secondary support arm is connected to the side frame (21). The overall length of the main support arm and the secondary support arm can be adjusted by telescopically moving the secondary support arm relative to the main support arm.

4. The flow guiding device according to claim 1, characterized in that, The side frame (21) is provided with multiple frame openings; According to the position of the air intake of the tractor truck, the frame opening corresponding to the position of the air intake can be used as the grille mounting opening (214), and the grille mounting opening (214) is used to set the air intake grille (241); According to the position of the gas cylinder (41), the frame opening corresponding to the position of the gas cylinder (41) can be used as the gas filling port (215), which is used to add gas into the gas cylinder (41); a gas filling plate (242) is provided at the gas filling port (215), and the gas filling plate (242) and the side frame (21) are closably connected to open or close, which is used to open or cover the gas filling port (215); The remaining frame openings are detachably covered by the side mainboard (22); The remaining frame openings are those other than the grille mounting opening (214) and the air filling opening (215) among the multiple frame openings.

5. The flow guiding device according to claim 4, characterized in that, A locking mechanism is provided between the gas filling plate (242) and the side frame (21), and the locking mechanism has an open state and a locked state; When the locking mechanism is in the released state, the gas filling plate (242) opens the gas filling port (215); When the locking mechanism is in the locked state, the gas filling plate (242) covers the gas filling port (215).

6. The flow guiding device according to claim 4, characterized in that, The remaining frame openings include multiple first frame openings (211) and multiple second frame openings (212), both of which are rectangular; the length of the first frame opening (211) is equal to the length of the second frame opening (212), and the width of the first frame opening (211) is less than the width of the second frame opening (212); Multiple first frame openings (211) and grille mounting openings (214) are arranged in the same column, and multiple second frame openings (212) and gas filling ports (215) are arranged in the same column; The side main board (22) includes a first side main board (221) and a second side main board (222). The size of the first side main board (221) is the same as the size of the first frame opening (211), and the size of the second side main board (222) is the same as the size of the second frame opening (212).

7. The flow guiding device according to claim 6, characterized in that, The remaining frame openings also include multiple third frame openings (213), which are rectangular; the length of the third frame opening (213) is equal to the length of the second frame opening (212), and the width of the third frame opening (213) is less than the width of the second frame opening (212); Multiple third frame ports (213) are set in the same column; The side main board (22) includes a third side main board (223), which includes a straight segment (2231) and an arc segment (2232). The straight segment (2231) covers a portion of the third frame opening (213), and the arc segment (2232) includes a first end and a second end disposed opposite to each other. The first end and the straight segment (2231) are connected, and the second end extends away from the main frame (11) in the length direction of the main frame (11).

8. The flow guiding device according to claim 7, characterized in that, The second end of the third side main board (223) is provided with a connecting seat (261), and the connecting seat (261) has a through hole; a support rod (262) is inserted through the through hole, and the support rod (262) extends along the length direction of the third side main board (223); the support rod (262) and the side frame (21) are connected by a bracket (263).

9. The flow guiding device according to claim 1, characterized in that, The bottom of the main frame (11) is provided with a base frame (13), and the base frame (13) and the main frame (11) are fixedly connected; The underframe (13) is used to be mounted on the front beam of the tractor truck and detachably connected to the front beam; or, the underframe (13) is used to be mounted on the gas cylinder base (42) of the tractor truck and detachably connected to the gas cylinder base (42).

10. The flow guiding device according to claim 9, characterized in that, A lower connecting rod (272) is connected between the lower ends of the base frame (13) and the side frame (21); there are multiple lower connecting rods (272), and the multiple lower connecting rods (272) are staggered in space.

11. The flow guiding device according to claim 1, characterized in that, Side sub-plates (25) are also provided on the left and right sides of the main frame (11), and the side sub-plates (25) are located above the side main plate (22); The lower end of the side plate (25) and the upper end of the side frame (21) are detachably connected. An upper connecting rod (271) is connected between the side plate (25) and the main frame (11). There are multiple upper connecting rods (271), and the multiple upper connecting rods (271) are staggered in space.

12. The flow guiding device according to claim 11, characterized in that, The frame also includes a top frame (31), which is disposed on top of the main frame (11), and the top frame (31) and the main frame (11) are detachably connected. A top flow guide (32) can be pre-installed on the top frame (31), and the top flow guide (32) is used to cover the top of the gas cylinder (41).

13. The flow guiding device according to claim 12, characterized in that, The top fairing (32) includes a windward plate (321) and skirt plates (322) arranged on the left and right sides of the windward plate (321); the rear end of the windward plate (321) is hinged to the top frame (31), and from back to front, the windward plate (321) is inclined downward. The skirt panel (322) is located on the side of the side sub-plate (25) away from the main frame (11), and the skirt panel (322) covers the upper end of the side sub-plate (25).

14. The flow guiding device according to claim 13, characterized in that, The top frame (31) includes a top frame (311), a main column (312), and a secondary column (313); the top frame (311) and the main frame (11) are detachably connected; the main column (312) is located on the rear side of the top frame (311); the lower end of the main column (312) is hinged to the top frame (311); the main column (312) has a column hole; the lower end of the secondary column (313) passes through the column hole; the upper end of the secondary column (313) is hinged to the rear end of the windward plate (321); the secondary column (313) can move up and down relative to the main column (312).

15. The flow guiding device according to claim 14, characterized in that, The main column (312) is provided with a plurality of third connecting parts (314), and the plurality of third connecting parts (314) are spaced apart in the extending direction of the main column (312); The sub-column (313) is provided with a plurality of fourth connecting parts (315), and the plurality of fourth connecting parts (315) are spaced apart in the extending direction of the sub-column (313); The third connecting part (314) and the fourth connecting part (315) cooperate to realize the connection between the main column (312) and the secondary column (313); By engaging the third connecting part (314) and the fourth connecting part (315) at different positions, the connection positions of the main column (312) and the secondary column (313) can be adjusted.

16. A tractor truck, characterized in that, It includes a truck head, a trailer, a gas cylinder (41), and a flow guiding device as described in any one of claims 1 to 15; the gas cylinder (41) and the flow guiding device are both disposed between the truck head and the trailer, the main frame (11) surrounds the outside of the gas cylinder (41), and the side main plate (22) covers the left and right sides of the gas cylinder (41).

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