A carrier applicable to different passages

Abstract

The utility model relates to the technical field of warehouse logistics equipment, and specifically discloses a carrying vehicle applicable to different passages, which comprises a vehicle body system, a walking system, a fork system, a side shift system and a wheel track adjusting system, the side shift system adopts a scissor type telescopic piece installed between the forks and the fork frame, the forks can be driven to move laterally, the wheel track adjusting system is installed between the two front wheels, the front end of the vehicle body can be lifted and the front wheels can be driven to move to adjust the wheel track, when the side shift distance of the forks reaches a first preset distance, the system automatically triggers the wheel track adjustment, the front wheel on the same side of the forks is driven to move outward or the two front wheels are simultaneously driven to move in opposite directions, thereby dynamically widening the support surface to compensate for the gravity center deviation, through the synergistic effect of the side shift of the forks and the dynamic adjustment of the wheel track of the vehicle, the contradiction between the side shift range of the forks of the traditional carrying vehicle and the stability of the whole vehicle is fundamentally solved, and the adaptability of the equipment to different width passages, the operation safety and the utilization rate of the warehouse space are significantly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of material handling equipment, and specifically to a handling vehicle applicable to different channels. Background Technology

[0002] In the field of warehousing and logistics, handling vehicles are key equipment for loading, unloading, stacking and short-distance transfer of goods. Their performance directly affects the operational efficiency and space utilization of warehouses. With the diversification of warehousing models, various standards have been established for the width of aisles in narrow aisles to adapt to different storage densities and rack layouts. This places higher demands on the aisle adaptability of handling equipment.

[0003] In existing technologies, to accommodate narrow aisles with varying widths, lateral guide wheels are typically installed on both sides of the pallet truck. The position of these guide wheels is adjusted to ensure they remain in contact with the guide rails on both sides of the aisle, preventing the truck from veering off course during operation. To retrieve goods from shelves, pallet trucks are usually equipped with lateral forks. However, the lateral movement distance of traditional forks is limited by the length of the transverse frame, resulting in a limited range of motion. When the aisle width is much greater than the width of the pallet truck, although the extension of the guide wheels can still ensure stability, the fork travel is shortened. In particular, the guide wheel's limitation prevents the pallet truck from adjusting its lateral position, leading to the forks being unable to retrieve goods. Simply increasing the fork travel, when the forks pick up heavy objects and extend laterally a large distance, causes the vehicle's center of gravity to shift, increasing the risk of tipping over and posing a safety hazard. Furthermore, excessive force on the guide wheels can easily damage them. Utility Model Content

[0004] This utility model addresses the aforementioned problems and aims to provide a transport vehicle applicable to different aisles. It can achieve a wide range of lateral movement of the forks while ensuring vehicle stability, thereby effectively adapting to aisles of different widths and improving warehouse space utilization and operational efficiency.

[0005] To achieve the above objectives, this utility model provides a transport vehicle applicable to different aisles, including a body system, a running system, and a fork system. The body system includes a vehicle body; the running system includes front wheels and rear wheels, with the rear wheels mounted on the bottom of the rear end of the vehicle body and the two front wheels symmetrically arranged on both sides of the front end of the vehicle body; the fork system includes a transverse frame, a fork carriage, and forks, with the transverse frame mounted on the front side of the vehicle body and the forks movably connected to the transverse frame via the fork carriage; and further includes:

[0006] The lateral shifting system includes a scissor-type telescopic component arranged between the forks and the fork carriage, which can drive the forks to move laterally relative to the fork carriage;

[0007] A wheelbase adjustment system, installed between the two front wheels, is used to support the front end of the vehicle body and drive one or both front wheels to move toward or away from each other.

[0008] When the forks move laterally in the first or second direction to a first preset distance, the front wheels arranged in the same direction as the forks extend move away from the other front wheel, or the two front wheels move away from each other.

[0009] According to the above-described pallet truck applicable to different channels, the scissor-type telescopic component includes at least one set of cross-hinged links, one end of which is hinged to the fork carriage and the other end of which is hinged to the forks.

[0010] According to the above-described pallet truck applicable to different channels, the lateral movement system further includes a telescopic power component, which is mounted on the fork carriage. A connecting rod is provided between the ends of the two connecting rods arranged in the same direction, and the output end of the telescopic power component is connected to the connecting rod.

[0011] According to the above-described pallet truck applicable to different channels, the telescopic power component is a cylinder or a hydraulic cylinder, the cylinder or the hydraulic cylinder is hinged to the fork carriage, and the piston rod of the cylinder or the hydraulic cylinder is hinged to the connecting rod.

[0012] According to the above-described transport vehicle applicable to different channels, the wheel track adjustment system includes an adjustment drive component. The front end of the vehicle body is provided with first mounting holes on both sides. The inner side of the front wheel is provided with a first rotating shaft, which is movably inserted into the first mounting hole. The adjustment drive component is fixed to the inner side of the front end of the vehicle body. The output end of the adjustment drive component can be connected to the first rotating shaft, and the front wheel can be driven to move towards or away from the side of the vehicle body through the first rotating shaft.

[0013] According to the above-described transport vehicle applicable to different channels, the adjusting drive component is a linear motor, the output shaft of the linear motor is arranged in the same direction as the first rotating shaft, and can be connected to the first rotating shaft through a coupling.

[0014] According to the above-described transport vehicle applicable to different channels, the wheel track adjustment system further includes a lifting cylinder and a lifting arm. The lifting cylinder is arranged vertically on the vehicle body, and the piston rod of the lifting cylinder can extend to the bottom of the vehicle body and connect with the lifting arm.

[0015] The above-described transport vehicle, applicable to different channels, also includes a guiding system. The guiding system includes multiple guide wheels, which are symmetrically arranged on both sides of the vehicle body, and the distance between the guide wheels and the vehicle body is adjustable.

[0016] According to the above-described transport vehicle applicable to different channels, the guiding system further includes a mounting strip and an adjusting motor. The mounting strip is movably inserted through the side of the vehicle body. The guide wheel is fixed to one end of the mounting strip extending outside the vehicle body. A rack is provided on one end of the mounting strip inside the vehicle body. The adjusting motor is located on one side of the rack, and a gear that meshes with the rack is provided on the output shaft of the adjusting motor.

[0017] According to the above-described pallet truck applicable to different channels, the fork system further includes a lifting frame, which is movably connected to the transverse frame, and the fork carriage is liftably connected to the lifting frame.

[0018] This utility model has the following beneficial effects:

[0019] 1. By setting up the linkage between the side shift system and the wheel track adjustment system, the forks can achieve a large side shift stroke while the pallet truck can maintain stability by automatically widening the wheel track, which perfectly solves the contradiction between large stroke side shift and the anti-tipping stability of the pallet truck.

[0020] 2. The scissor lift mechanism increases the lateral travel of the forks, greatly enhancing the adaptability of the pallet truck to aisles of different widths. In wide aisles, the large lateral travel allows for flexible loading and unloading of goods; in narrow aisles, the wheelbase and forks can be narrowed to allow passage, improving the flexibility of warehouse space layout and space utilization.

[0021] 3. The wheel track adjustment system may include a lifting component, which allows the vehicle body to be lifted first and then the front wheels to be adjusted, making the adjustment process smoother and reducing tire wear and driving resistance;

[0022] 4. Equipped with an adjustable spacing guidance system, further ensuring the guidance accuracy and stability of vehicles traveling in channels of various widths;

[0023] 5. The overall structure is reasonably designed, the functions are complete, and the degree of automation is high, which can significantly improve the handling efficiency and operational safety of warehousing and logistics. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the transport vehicle in the embodiment;

[0025] Figure 2 This is a schematic diagram of the side-shifting system and fork carriage assembly in an embodiment;

[0026] Figure 3 This is another perspective view of the lateral shift system and fork carriage assembly in the embodiment;

[0027] Figure 4 This is a schematic diagram of the assembly structure of the wheel track adjustment system and the front wheel in an embodiment;

[0028] Figure 5 This is a schematic diagram of the guidance system structure in an embodiment.

[0029] In the picture:

[0030] 100. Body system; 110. Vehicle body;

[0031] 200. Walking system; 210. Front wheel; 211. First pivot;

[0032] 300. Fork system; 310. Lateral carriage; 320. Fork carriage; 330. Forks; 340. Lifting frame;

[0033] 400. Lateral shift system; 410. Scissor-type telescopic component; 411. Linkage rod; 412. Connecting rod; 420. Telescopic power component;

[0034] 500. Wheelbase adjustment system; 510. Linear motor; 511. Coupling; 520. Lifting cylinder; 530. Lifting arm;

[0035] 600, Guiding system; 610, Guide wheel; 620, Mounting strip; 621, Rack; 630, Adjusting motor; 631, Gear. Detailed Implementation

[0036] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0037] like Figure 1-5 As shown, a transport vehicle applicable to different aisles includes a body system 100, a travel system 200, a fork system 300, a side-shifting system 400, a wheelbase adjustment system 500, and a guiding system 600.

[0038] In this embodiment, the main issue addressed is the applicability of the pallet truck to aisles of varying widths. Since the existing forks 330 have limited lateral movement distance, picking up goods from wider aisles is cumbersome. Therefore, the lateral shift system 400 can extend the lateral stroke of the forks 330, increasing their picking range and facilitating the picking action. During this process, if the forks 330 are picking up heavy objects, their lateral shift can cause a shift in the center of gravity, especially when the lateral shift is long enough, which can easily lead to the pallet truck tipping over. Therefore, during the lateral shift of the forks 330 driven by the lateral shift system 400, the wheelbase adjustment system 500 can be used to adjust the wheelbase of the pallet truck, improving its stability. This interlocking mechanism allows the forks 330 to achieve a large lateral stroke while the pallet truck maintains stability by automatically widening its wheelbase, perfectly resolving the contradiction between large lateral stroke and the pallet truck's anti-tipping stability.

[0039] The vehicle body system 100 includes a vehicle body 110, which includes a chassis and a driver's cab located on the chassis. The chassis is the main support component, used to provide support for the entire transport vehicle. The driver's cab is equipped with multiple control components for the driver to control the entire transport vehicle.

[0040] The walking system 200 includes front wheels 210 and rear wheels. The rear wheels are installed at the bottom of the rear end of the vehicle body 110, and the two front wheels 210 are symmetrically arranged on both sides of the front end of the vehicle body 110. The rear wheels serve as driving wheels, and the two front wheels 210 serve as driven wheels. Together, they provide rolling support for the vehicle body 110 and drive the entire transport vehicle to move.

[0041] The fork system 300 includes a traverse frame 310, a lifting frame 340, a fork carriage 320, and forks 330. The traverse frame 310 is mounted on the front side of the vehicle body 110. The lifting frame 340 is movably mounted on the traverse frame 310 via a guide rail slider mechanism. The lateral movement of the lifting frame 340 on the traverse frame 310 is powered by a traverse motor, which transmits the power through a gear 631 and a rack 621. Specifically, a rack 621 is provided on the traverse frame 310, and the traverse motor is mounted on the lifting frame 340. The gear 631 is mounted on the output shaft of the traverse motor and meshes with the rack 621. When the traverse motor rotates, the meshing of the gear 631 and the rack 621 drives the lifting frame 340 to move. The fork carriage 320... The fork system 300 is connected to the lifting frame 340 via another guide rail slider mechanism. The lifting frame 340 is equipped with a lifting cylinder arranged vertically. The piston rod of the lifting cylinder drives the fork carriage 320 to perform lifting and lowering actions. That is, the fork system 300 itself can drive the fork 330 to perform lateral movement and lifting and lowering movements. The lateral movement distance of the fork 330 on the transverse frame 310 depends on the length of the transverse frame 310. However, the length of the transverse frame 310 generally does not exceed the width of the pallet truck. That is, the initial lateral movement distance of the fork 330 is small. In a narrow passage, the initial lateral movement distance of the fork 330 meets the distance requirement for picking up goods. However, in a wide passage, the initial lateral movement distance of the fork 330 cannot meet the distance requirement for picking up goods.

[0042] The lateral shifting system 400 includes a scissor-type telescopic member 410, which is arranged between the fork 330 and the fork carriage 320. This member can drive the fork 330 to move laterally relative to the fork carriage 320. The scissor-type telescopic member 410 can independently drive the fork 330, thereby increasing the lateral shifting stroke of the fork 330. Therefore, the overall lateral shifting stroke of the fork 330 includes the stroke on the lateral shifter 310 plus the lateral shift caused by the scissor-type telescopic member 410 driving the fork 330, thus increasing the overall lateral shifting stroke of the fork 330. The lateral travel is no longer limited by the width of the transverse frame 310, and can far exceed the limitations of traditional structures. This fundamentally solves the problem of "short travel of the forks 330, making it impossible to pick up or place goods at a distance". In a wide aisle, even if the pallet truck is running in the center, the large travel of the forks 330 can meet its need to reach distant shelves. Moreover, the scissor structure itself has the amplification characteristics of "small retracted size and large extension travel", which allows the forks 330 to remain compact when retracted without increasing the width of the vehicle, while it can extend a long distance when needed.

[0043] Furthermore, the scissor-type telescopic component 410 includes at least one set of cross-hinged connecting rods 411. One end of the connecting rod 411 is hinged to the fork carriage 320, and the other end is hinged to the fork 330. The lateral displacement system 400 also includes a telescopic power component 420, which is mounted on the fork carriage 320. A connecting rod 412 is provided between the ends of two connecting rods 411 arranged in the same direction. The output end of the telescopic power component 420 is connected to the connecting rod 412. By using the cross-arranged connecting rod 411 mechanism, the linear motion of the telescopic power component 420 can be geometrically amplified into a large lateral displacement of the fork 330. When the telescopic power component 420 pushes the connecting rod 412 between the connecting rods 411 to produce a small linear displacement, the end of the fork 330 can obtain a significant lateral displacement through the change in the angle of the connecting rods 411. This displacement, several times greater than that, makes it possible for the forks 330 to move laterally over a wide range, far exceeding the width of the vehicle body, within the limited installation space of the pallet truck (the narrow space between the forks 330 and the fork carriage 320). The most fundamental contradiction between space and stroke is solved with the simplest mechanical structure. At the same time, by setting a connecting rod 412 to connect the ends of the two connecting rods 411 on the same side, and directly applying the output end of the telescopic power component 420 to the connecting rod 412, it is equivalent to using a single power source to simultaneously and equally push or pull the same end of the two connecting rods 411. This design ensures that the movement of both sides of the scissor mechanism is completely synchronized, fundamentally avoiding jamming, internal stress, or fork 330 deviation that may occur due to asynchronous driving on both sides, and ensuring that the trajectory of the forks 330 is straight and the movement is smooth during lateral movement.

[0044] Furthermore, the telescopic power component 420 is configured as a cylinder or hydraulic cylinder, which is hinged to the fork carriage 320, and the piston rod of the cylinder or hydraulic cylinder is hinged to the connecting rod 412. By hinged the cylinder body and both ends of the piston rod to the fork carriage 320 and the connecting rod 412 respectively, the power component itself becomes a "connecting rod" that can swing slightly. When the connecting rod 412 deflects at an angle during movement, the hinge structure allows the hydraulic cylinder / cylinder to rotate freely, always ensuring that the axis of the piston rod is basically consistent with the direction of force. This fundamentally eliminates the huge radial lateral force caused by the mismatch between the mechanism's motion trajectory and the rigid installation of the drive. The aforementioned radial lateral force is the main cause of abnormal wear, early leakage, and even piston rod bending of the hydraulic cylinder or cylinder seals (such as piston rod seals and guide sleeves). The double hinge installation of this design purifies the load borne by the power component into an ideal axial push-pull force, greatly reducing the burden on the seals, significantly improving the working reliability and service life of the cylinder or hydraulic cylinder, and reducing the failure rate and maintenance costs.

[0045] Since the fork system 300 is entirely mounted at the front of the vehicle body 110, its center of gravity changes after the forks 330 pick up goods and move laterally a significant distance. The front wheels 210 provide support for this change. Therefore, in this embodiment, the wheelbase adjustment system 500 is installed between the two front wheels 210 to support the front of the vehicle body 110 and drive one or both front wheels 210 to move closer to or further away from each other. This wheelbase adjustment system 500 actively widens the support surface of the transport vehicle by driving the front wheels 210 to move "away from each other." According to mechanical principles, a wider support surface provides stronger resistance to the same overturning moment. This is equivalent to dynamically "adding" support when the vehicle is about to lose balance. The "wide base" actively and directly offsets the additional tipping risk caused by the large stroke lateral movement of the forks 330 at the physical level, fundamentally solving the traditional contradiction between "increasing the operating range" and "maintaining vehicle stability". It also clearly states that "the front end of the vehicle body 110 is used to support the front end" as a leading action. Before adjusting the wheel track, the front end of the vehicle body 110 is lifted off the ground. This is of key significance: it completely eliminates the huge rolling friction and possible static friction between the front wheel 210 and the ground. This makes it extremely easy to drive the front wheel 210 to move laterally, allowing the use of a smaller and more precise drive mechanism. At the same time, it completely avoids the serious wear, drive mechanism overload, or even damage caused by forcibly dragging the tires under strong friction.

[0046] In this embodiment, when the fork 330 laterally moves along the first or second direction to a first preset distance, the front wheel 210, which is arranged in the same direction as the fork 330's extension direction, moves away from the other front wheel 210, or both front wheels 210 move away from each other. This establishes a dynamic correlation between the lateral movement distance of the fork 330 and the wheelbase of the front wheels 210. When the lateral movement of the fork 330 increases to a preset risk threshold (the first preset distance), the system automatically triggers wheelbase adjustment to widen the support surface to counteract the increased overturning moment. This fundamentally breaks the notion that "an expanded operating range inevitably leads to an increased risk of instability." Overcoming the traditional design limitations of "addition," the Forklift 330 allows for a safer side-shifting stroke far exceeding that of traditional designs while maintaining dynamic stability. Through this linkage system, the pallet truck can flexibly switch between two modes: maintaining a small wheelbase and small side-shifting when passing through narrow aisles or performing light-load side-shifting to ensure maneuverability; and automatically switching to a stable "large wheelbase + large side-shifting" operating mode when performing large-scale picking and placing of goods in wide aisles. This enables a single device to efficiently adapt to aisles of different widths and storage locations in the warehouse, reducing reliance on specialized equipment and significantly improving equipment versatility and warehouse layout flexibility.

[0047] In this embodiment, the first preset distance refers to the distance at which the pallet truck may tip over if the lateral movement distance of the forks 330 exceeds the first preset distance when the forks 330 pick up goods with their maximum load capacity. The automatic adjustment of the wheel track achieves the effect of preventing tipping in advance.

[0048] Furthermore, the wheel track adjustment system 500 includes an adjustment drive component. The front of the vehicle body 110 has first mounting holes on both sides. The front wheel 210 has a first rotating shaft 211 on its inner side. The first rotating shaft 211 is movably inserted into the first mounting hole. The adjustment drive component is fixed to the inner side of the front of the vehicle body 110. The output end of the adjustment drive component can be connected to the first rotating shaft 211. The front wheel 210 can be driven to move towards or away from the vehicle body 110 through the first rotating shaft 211. That is, the adjustment drive component provides power for the lateral movement of the front wheel 210.

[0049] In this embodiment, the adjustment drive is a linear motor 510. The linear motor 510 has higher adjustment precision and can accurately control the wheel track of the front wheel 210. The output shaft of the linear motor 510 is arranged in the same direction as the first rotating shaft 211 and can be connected to the first rotating shaft 211 through a coupling 511. The function of the coupling 511 is to allow the first rotating shaft 211 to rotate independently. At the same time, the linear motion of the output shaft of the linear motor 510 can drive the first rotating shaft 211 to move linearly in sync. That is, when the linear motor 510 is allowed to drive the first rotating shaft 211 to move linearly, it will not affect the rotation of the front wheel 210.

[0050] Furthermore, before adjusting the track width of the front wheels 210, the front end of the vehicle body 110 needs to be raised. Therefore, the track width adjustment system 500 also includes a lifting cylinder 520 and a lifting arm 530. The lifting cylinder 520 is arranged vertically on the vehicle body 110, and the piston rod of the lifting cylinder 520 can extend to the bottom of the vehicle body 110 and connect with the lifting arm 530. In this embodiment, there are two lifting cylinders 520 and two lifting arms 530, symmetrically arranged on the vehicle body 110. At the front end of the vehicle body 110, the lifting cylinder 520 can extend its piston rod downwards, which will drive the lifting arm 530 to move downwards until the lifting arm 530 contacts the ground. If the piston rod of the lifting cylinder 520 continues to extend, the lifting arm 530 will be restricted from moving further. The lifting cylinder 520 will then drive the front end of the vehicle body 110 to move upwards, thereby lifting the front end of the vehicle body 110. At this time, adjusting the front wheel 210 can reduce the adjustment resistance and avoid wear on the front wheel 210.

[0051] The guiding system 600 includes multiple guide wheels 610, which are symmetrically arranged on both sides of the vehicle body 110. The distance between the guide wheels 610 and the vehicle body 110 is adjustable. When the transport vehicle enters the aisle, the lateral position of the guide wheels 610 is adjusted according to the width of the aisle, so that the guide wheels 610 on both sides of the transport vehicle abut against the guide rails on both sides of the aisle. This prevents the transport vehicle from deviating in the aisle and ensures the stability of its movement. Therefore, after the guide wheels 610 abut against the guide rails, it is more troublesome to adjust the distance between the forks 330 and the rack by adjusting the position of the transport vehicle. The guide wheels 610 need to be adjusted synchronously, which is very complicated. Therefore, the lateral movement system 400 is used to increase the lateral movement stroke of the forks 330.

[0052] To achieve the adjustment of the guide wheel 610, the guide system 600 also includes a mounting strip 620 and an adjustment motor 630. The mounting strip 620 is movably inserted through the side of the vehicle body 110. The guide wheel 610 is fixed to the end of the mounting strip 620 that extends outside the vehicle body 110. A rack 621 is provided on the end of the mounting strip 620 that is inside the vehicle body 110. The adjustment motor 630 is located on one side of the rack 621. A gear 631 that meshes with the rack 621 is provided on the output shaft of the adjustment motor 630. When the adjustment motor 630 is working, the output shaft of the adjustment motor 630 drives the gear 631 to rotate. The gear 631 drives the mounting strip 620 to translate through the rack 621, thereby achieving the lateral position adjustment of the guide wheel 610.

[0053] In this embodiment, the working process of the transport vehicle is as follows:

[0054] Initial state: Forks 330 are in the initial position, front wheels 210 have the normal track width, and guide wheels 610 have adjusted their extension distance according to the current aisle width;

[0055] Wide aisle operation: When it is necessary to operate on a distant cargo location in a wide aisle, the lifting frame 340 drives the forks 330 to move laterally. At the same time, the controller controls the lateral movement system 400 to operate, driving the scissor telescopic component 410 to unfold and move the forks 330 laterally towards the target cargo location. The controller monitors the lateral movement distance of the forks 330 in real time.

[0056] Linked vehicle stabilization: When the lateral displacement distance of the forks 330 reaches the first preset distance, the controller determines that continued lateral displacement may lead to excessive center of gravity shift. At this time, the controller first activates the wheel track adjustment system 5005. The lifting cylinder 520 extends, slightly lifting the front of the vehicle. Then, it drives the linear motor 510 on the same side as the extension direction of the forks 330 (or simultaneously drives the linear motors 510 on both sides), pushing the front wheel 210 on that side outward a certain distance (or pushing both front wheels 210 outward simultaneously), thereby increasing the wheel track of the front wheels 210 and increasing the stability of the transport vehicle.

[0057] Side shift completed: After the wheel track is adjusted to the correct position, the side shift system 400 continues to work until the forks 330 reach below the target position. Then, the fork system 300 performs lifting and lowering actions to complete the picking and placing of goods.

[0058] Recovery and driving: After the operation is completed, the forks 330 move to the side and retract. When they are retracted to a distance less than the first preset distance, the wheel track adjustment system 500 reverses its action, moving the front wheels 210 back to the normal wheel track. The lifting cylinder 520 retracts, and the vehicle returns to normal driving status.

[0059] The technical solution of this utility model has been described in detail above with reference to the accompanying drawings. The described embodiments are used to help understand the concept of this utility model. The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains can make various modifications or additions to the described specific embodiments or use similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0060] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0061] Furthermore, in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0062] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0063] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A transport vehicle applicable to different aisles, comprising a body system, a running system, and a fork system, wherein the body system comprises a vehicle body, the running system comprises front wheels and rear wheels, the rear wheels are mounted on the bottom of the rear end of the vehicle body, and the two front wheels are symmetrically arranged on both sides of the front end of the vehicle body; the fork system comprises a transverse frame, a fork carriage, and forks, the transverse frame is mounted on the front side of the vehicle body, and the forks are movably connected to the transverse frame via the fork carriage, characterized in that... Also includes: The lateral shifting system includes a scissor-type telescopic component arranged between the forks and the fork carriage, which can drive the forks to move laterally relative to the fork carriage; A wheelbase adjustment system, installed between the two front wheels, is used to support the front end of the vehicle body and drive one or both front wheels to move toward or away from each other. When the forks move laterally in the first or second direction to a first preset distance, the front wheels arranged in the same direction as the forks extend move away from the other front wheel, or the two front wheels move away from each other.

2. A transport vehicle applicable to different channels according to claim 1, characterized in that, The scissor-type telescopic component includes at least one set of cross-hinged links, one end of which is hinged to the fork carriage and the other end of which is hinged to the forks.

3. A transport vehicle applicable to different channels according to claim 2, characterized in that, The lateral shifting system also includes a telescopic power component, which is mounted on the fork carriage. A connecting rod is provided between the ends of the two connecting rods arranged in the same direction, and the output end of the telescopic power component is connected to the connecting rod.

4. A transport vehicle applicable to different channels according to claim 3, characterized in that, The telescopic power component is a pneumatic cylinder or a hydraulic cylinder, which is hinged to the fork carriage, and the piston rod of the pneumatic cylinder or the hydraulic cylinder is hinged to the connecting rod.

5. A transport vehicle applicable to different channels according to claim 1, characterized in that, The wheel track adjustment system includes an adjustment drive component. The front end of the vehicle body has first mounting holes on both sides. The front wheel has a first rotating shaft on its inner side. The first rotating shaft is movably inserted into the first mounting hole. The adjustment drive component is fixed to the inner side of the front end of the vehicle body. The output end of the adjustment drive component can be connected to the first rotating shaft and can drive the front wheel to move towards or away from the side of the vehicle body through the first rotating shaft.

6. A transport vehicle applicable to different channels according to claim 5, characterized in that, The adjustment drive is a linear motor, the output shaft of which is arranged in the same direction as the first rotating shaft and can be connected to the first rotating shaft via a coupling.

7. A transport vehicle applicable to different channels according to claim 5, characterized in that, The wheel track adjustment system also includes a lifting cylinder and a lifting arm. The lifting cylinder is arranged vertically on the vehicle body, and the piston rod of the lifting cylinder can extend to the bottom of the vehicle body and connect with the lifting arm.

8. A transport vehicle applicable to different channels according to claim 1, characterized in that, It also includes a guidance system, which includes multiple guide wheels symmetrically arranged on both sides of the vehicle body, and the distance between the guide wheels and the vehicle body is adjustable.

9. A transport vehicle applicable to different channels according to claim 8, characterized in that, The guiding system also includes a mounting strip and an adjusting motor. The mounting strip is movably inserted through the side of the vehicle body. The guide wheel is fixed to the end of the mounting strip that extends out of the vehicle body. A rack is provided on the end of the mounting strip inside the vehicle body. The adjusting motor is located on one side of the rack, and a gear that meshes with the rack is provided on the output shaft of the adjusting motor.

10. A transport vehicle applicable to different channels according to claim 1, characterized in that, The forklift system also includes a lifting frame, which is movably connected to the transverse frame, and the fork carriage is liftably connected to the lifting frame.

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