Automatic guide transport vehicle for logistics storage

Abstract

The invention relates to a guide transport vehicle, in particular to an automatic guide transport vehicle for logistics storage, and belongs to the technical field of automatic guide transport. The invention provides an automatic guided transport vehicle for logistics warehousing, which comprises a bearing shelf and a guided vehicle main body, the guided vehicle main body is mounted at the bottom of the bearing shelf, and the guided vehicle main body is used for driving the bearing shelf to move; a jacking assembly is mounted on the bearing goods shelf; the guide vehicle body is arranged in the center of the bottom of the bearing goods shelf, Mecanum wheels are adopted as driving wheels, and efficient steering control of the guide vehicle body under the heavy load condition is achieved by combining the synergistic effect of a jacking assembly, a telescopic sleeve and a steering sliding plate; therefore, the problems that in the heavy load and frequent steering process of an existing logistics storage automated guided vehicle, the steering response is slow and tires are seriously abraded due to uneven stress of the guided vehicle body and the driving wheels are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic guided transportation, and particularly relates to an automatic guided vehicle for logistics warehousing. Background Art

[0002] In modern warehousing and logistics systems, in order to improve operation efficiency and automation level, automatic guided vehicles (AGVs) and their control systems have been widely used in various large warehouses, distribution centers, and production workshops. Existing guided vehicles usually adopt differential drive and steering mechanisms to achieve omnidirectional movement and turning, can flexibly travel in narrow spaces, and cooperate with automated sorting, loading, and shelf access systems to complete the transportation of goods.

[0003] During the logistics transportation process, in order to adapt to the characteristics of dense shelves and narrow aisles in the warehousing environment, the guided vehicle often needs to complete frequent 90-degree right-angle turns under the condition of a low turning radius. When the guided vehicle is in a heavy-load state, the centrifugal force, lateral shear force generated during turning, and uneven load distribution among the driving wheels during the movement transformation cause some driving wheels to bear large frictional forces and impact loads during high-speed rotation and instantaneous acceleration and deceleration. This will not only cause problems such as excessive wear and cracking on the tire surface, but may also lead to a decline in the overall stability of the drive system, thereby affecting the normal operation of the vehicle and the safe transportation of goods.

[0004] Although some existing technologies adopt differential control or multi-wheel omnidirectional design (such as Mecanum wheel technology) to achieve multi-directional movement and in-situ turning, under heavy-load working conditions, due to the large inertial moment, it is difficult to accurately match the rotational speed regulation of each driving wheel when the guided vehicle makes a sharp turn, resulting in wheel slippage and increased local wear. On the other hand, the existing driving wheel materials and structural designs mainly use ordinary rubber or polyurethane, lacking wear-resistant improvement measures for long-term use under heavy-load and severe turning working conditions, which are prone to cause problems of local fatigue and damage of the driving wheels.

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention designs an automatic guided vehicle for logistics warehousing, which solves the above technical problems. Summary of the Invention

[0006] The technical problems to be solved by the present invention are as follows: For the existing automatic guided vehicle for logistics warehousing, under heavy-load working conditions, due to the large inertial moment, it is difficult to accurately match the rotational speed regulation of each driving wheel when the guided vehicle makes a sharp turn, resulting in wheel slippage and increased local wear. On the other hand, the existing driving wheel materials and structural designs mainly use ordinary rubber or polyurethane, lacking wear-resistant improvement measures for long-term use under heavy-load and severe turning working conditions, which are prone to cause problems of local fatigue and damage of the driving wheels.

[0007] The present invention provides the following technical solutions: an automatic guided transport vehicle for logistics warehousing, comprising a load-bearing shelf and a guide vehicle body, wherein the guide vehicle body is installed at the bottom of the load-bearing shelf, and the guide vehicle body is used to drive the load-bearing shelf to move; a jacking assembly is installed on the load-bearing shelf; the present invention realizes efficient steering control of the guide vehicle body under heavy load conditions by arranging the guide vehicle body at the bottom center of the load-bearing shelf, adopting Mecanum wheels as driving wheels, and combining the synergistic effect of the jacking assembly, telescopic sleeve and steering slide plate.

[0008] Among them, a telescopic sleeve is arranged at the bottom center of the load-bearing shelf, and a steering slide that can slide horizontally linearly is arranged on the upper part of the guide vehicle body. The steering slide is rotatably mounted on the telescopic sleeve through a linkage shaft thereon; a locking component for locking and positioning the guide vehicle body is also arranged at the bottom of the load-bearing shelf.

[0009] Specifically, the lifting assembly lifts the load-bearing shelf when turning, so that the main body of the guide vehicle is in a "force-relief suspended" state, reducing the load on the driving wheel; then, the telescopic sleeve is extended and retracted through the cylinder to make the main body of the guide vehicle contact the ground, and the driving wheel rotates to drive the overall steering of the main body of the guide vehicle, thereby effectively solving the problem of uneven force and severe wear of the driving wheels when the guide vehicle is frequently turned under heavy load in the prior art, and improving the operating stability of the system and the service life of the driving wheels.

[0010] Among them, the telescopic sleeve includes an I-shaped support sleeve, a telescopic cylinder and a bearing end cover, which form a compact and stable steering structure; the I-shaped top of the support sleeve is installed at the bottom of the load-bearing shelf, a linkage shaft is installed inside the support sleeve for sliding up and down, and multiple telescopic cylinders are installed in a circular array outside, the lower end of the telescopic cylinder is connected to the bearing end cover, and the inside of the bearing end cover is installed by a rolling bearing that cooperates with the bearing groove opened on the steering slide.

[0011] The coordination between the linkage shaft and the steering slide enables the main body of the guide vehicle to achieve horizontal linear sliding and rotational steering; the coordination between the bearing end cover and the bearing slide groove on the steering slide ensures the stability and precision of the steering process; the coordination design of the linkage shaft and the steering slide optimizes the connection method between the guide vehicle and the load-bearing shelf, improves the overall stability and steering response speed of the system, and adapts to the needs of high flexibility and high efficiency in complex warehousing environments.

[0012] Preferably, a protruding locking key is provided in the middle of the linkage shaft, a locking groove engaged with the locking key is provided in the supporting sleeve, a release groove is provided below the locking groove, and the minimum inner diameter of the release groove is not less than the maximum outer diameter of the locking key.

[0013] Among them, the locking assembly includes a straight - line locking member and a steering locking member. The straight - line locking member and the steering locking member are arranged at a right angle to each other, and their component compositions are the same, both including a locking block and a positioning pressing block, thus ensuring the precise positioning and reliable locking of the AGV main body during operation.

[0014] Preferably, a locking cooperation block and a positioning cooperation block that respectively cooperate with the locking block and the positioning pressing block are installed on the AGV main body; thereby realizing the stable connection of the AGV main body in the straight - line and steering states.

[0015] Preferably, the locking cooperation block includes a cooperation top block at the top and a locking card slot at the lower part. A locking tongue is horizontally slidably installed at the bottom of the locking block.

[0016] Furthermore, the locking tongue is horizontally slid into the locking card slot through an electric cylinder, and the positioning cooperation block is engaged with the positioning pressing block through a cooperation card slot recessed on it; the locking tongue further enhances the positioning accuracy, improves the safety and reliability of the AGV main body during operation, reduces the maintenance cost, and prolongs the service life of the equipment.

[0017] Preferably, an electrically controlled sliding column that slides telescopically is arranged at the top of the locking tongue, and the electrically controlled sliding column slides upward to engage with a limiting slot in the locking card slot.

[0018] Among them, an auxiliary block is installed on the outside of the positioning cooperation block and at the top end of the AGV main body. The inner side of the auxiliary block is wedge - shaped and a sliding and telescopic auxiliary sliding column is installed on it. An auxiliary sliding groove that engages with the auxiliary sliding column is opened on the positioning pressing block.

[0019] Preferably, both the locking block and the positioning pressing block are slidably installed on the carrying shelf.

[0020] Among them, the present invention adopts a structure combined with a lifting cylinder, a scissor lift, and a lifting bottom plate. The lifting cylinder is divided into two groups and is respectively connected to the hinge points of the scissor lift, the lifting bottom plate, the top end and the bottom end of the same side of the scissor lift, and universal wheels are arranged at the bottom end of the carrying shelf to assist in bearing, so as to achieve the effect of lifting and decompression while ensuring the overall balance of the carrying shelf and the precise motion control of the AGV main body.

[0021] Generally speaking, an automatic guided vehicle applicable to logistics warehousing provided by the present invention details the core operating mechanism of the automatic guided vehicle in logistics warehousing through multiple linkage designs, which not only solves the problem of serious wear of the drive wheels during heavy - load turning, but also achieves significant improvements in terms of compact structure, stability, and operation flexibility.

[0022] The beneficial effects of the present invention are as follows:

[0023] 1. The present invention installs the main body of the guiding vehicle at the center of the bottom of the carrying shelf, and uses Mecanum wheels as the driving wheels. With the coordinated action of the lifting assembly, telescopic sleeve and steering slide plate, efficient steering control of the main body of the guiding vehicle under heavy load conditions is achieved, thus effectively solving the problem that the driving wheels of traditional AGVs are severely worn due to uneven load during frequent steering, and significantly improving the overall running stability and working efficiency of the vehicle.

[0024] 2. The present invention constructs a compact and stable steering mechanism by setting an I-shaped support sleeve, a linkage shaft and a bearing end cover in the telescopic sleeve. This structure ensures the precise cooperation between the steering slide plate and the linkage shaft, enabling the main body of the guiding vehicle to achieve smooth horizontal sliding and rotational steering, thereby further improving the steering response speed and control accuracy, and effectively meeting the operation requirements of fast and frequent steering in narrow spaces in the warehousing environment.

[0025] 3. The present invention is provided with a locking assembly including a straight-line locking member and a steering locking member, as well as auxiliary positioning structures such as an auxiliary block and an auxiliary sliding column between the main body of the guiding vehicle and the carrying shelf. These designs together achieve the positioning and locking of the main body of the guiding vehicle during operation, ensure reliable cooperation in the straight-line and steering states, further reduce the safety risks and maintenance costs during operation, and at the same time extend the service life of key components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Now the above and other aspects of the present invention will be described by way of example only with reference to the drawings, where:

[0028] Figure 1 is a schematic diagram of the overall structure of the guiding vehicle of the present invention;

[0029] Figure 2 is a schematic diagram of the bottom structure of the guiding vehicle of the present invention;

[0030] Figure 3 is a schematic diagram of the installation relationship of the locking assembly of the present invention;

[0031] Figure 4 is a schematic diagram of the top structure of the main body of the guiding vehicle of the present invention;

[0032] Figure 5 is a schematic plan view of the side of the main body of the guiding vehicle of the present invention;

[0033] Figure 6 is a schematic diagram of the jacking assembly of the present invention;

[0034] Figure 7 is the present invention Figure 6 a cross-sectional view taken along line A-A of;

[0035] Figure 8 is a structural cross-sectional view of the cooperation between the locking tongue and the locking groove of the present invention.

[0036] In the figure: 1, load-bearing shelf; 11, universal wheel; 12, jacking assembly; 121, jacking cylinder; 122, scissors frame; 123, jacking bottom plate; 2, guiding vehicle body; 21, linkage shaft; 211, locking key; 212, bearing chute; 22, positioning and fitting block; 221, fitting groove; 23, locking and fitting block; 231, fitting top block; 232, locking groove; 233, limiting groove; 24, auxiliary block; 241, auxiliary sliding column; 3, telescopic sleeve; 31, supporting sleeve; 32, telescopic cylinder; 33, bearing end cover; 4, straight-line locking member; 41, locking block; 411, locking tongue; 412, electric control sliding column; 42, positioning pressing block; 43, auxiliary chute; 5, steering locking member; 6, driving wheel; 7, steering slide plate. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed present invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0038] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "rear", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0040] It should also be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] The embodiments of the present disclosure aim to solve the problems that in the existing automatic guided vehicle for logistics warehousing, under heavy load conditions, due to the large inertial moment, it is difficult to accurately match the rotational speed regulation of each drive wheel when the guided vehicle makes a sharp turn, resulting in wheel slippage and increased local wear. On the other hand, most of the existing drive wheel materials and structural designs are based on ordinary rubber or polyurethane, lacking wear-resistant improvement measures for long-term use under heavy load and severe steering conditions, which easily leads to local fatigue and damage of the drive wheels. In view of this, the embodiments of the present disclosure propose an automatic guided vehicle for logistics warehousing. By installing the guided vehicle body at the center of the bottom of the carrying shelf and using Mecanum wheels as drive wheels, and cooperating with the lifting assembly, telescopic sleeve, and steering slide plate, efficient steering control of the guided vehicle body under heavy load conditions is achieved, thus effectively solving the problem of serious wear of the drive wheels caused by uneven load during the frequent turning process of traditional AGVs, and significantly improving the overall running stability and working efficiency of the vehicle.

[0042] As Figure 1-8 shown, an automatic guided vehicle for logistics warehousing includes a carrying shelf 1 and a guided vehicle body 2. The carrying shelf 1 serves as the cargo placement platform of the AGV, carrying all the goods to be transported. An interface for installing the guided vehicle body 2 is reserved below it, and universal wheels 11 are provided to assist in balanced movement during the moving state.

[0043] The guided vehicle body 2 is installed at the bottom of the carrying shelf 1. The guided vehicle body 2 is used to drive the carrying shelf 1 to move, and at the same time provide power and operation control for the whole vehicle, realizing the movement, turning, and positioning of the shelf on the ground. Four Mecanum wheels are used as the drive wheels 6, enabling the vehicle to have the ability of omnidirectional driving and turning in place. By controlling the rotational speed and direction of each wheel, the Mecanum wheel can achieve omnidirectional movement with a zero turning radius, greatly improving the mobility and steering flexibility of the AGV in a narrow space.

[0044] The load-bearing shelf 1 is provided with a lifting assembly 12. In the present embodiment, the lifting assembly 12 is composed of a lifting cylinder 121, a scissor frame 122 and a lifting base plate 123. The load-bearing shelf 1 can be lifted to a certain height as a whole before turning. After the lifting cylinder 121 is activated, the scissor frame 122 opens to lift the shelf, so that the driving wheel 6 no longer bears the load, thereby making the guide vehicle body 2 "suspended in the air" and significantly reducing the static pressure of the driving wheel 6.

[0045] like Figure 1 and Figure 2 As shown, the guide vehicle body 2 is rotatably arranged at the bottom center position of the load-bearing rack 1, and combined with the omnidirectional characteristics of the Mecanum wheel, the load distribution is more uniform, thereby improving the stability of heavy-load driving and the steering control accuracy.

[0046] A telescopic sleeve 3 is provided at the bottom center of the load-bearing shelf 1 , and a steering slide 7 capable of horizontal linear sliding is provided on the upper portion of the guide vehicle body 2 . The steering slide 7 is rotatably mounted on the telescopic sleeve 3 via a linkage shaft 21 thereon.

[0047] like Figure 3 As shown, in this embodiment, the bottom of the load-bearing rack 1 is also provided with a locking assembly for locking and positioning the guide vehicle body 2. The locking assembly consists of a straight-moving locking member 4 and a steering locking member 5, which are arranged at 90 degrees and have the same structure, including a locking block 41, a positioning pressure block 42, a locking tongue 411 and an auxiliary sliding column 241; in the straight-moving mode, the locking tongue 411 is inserted into the positioning groove to lock the guide vehicle body 2 to ensure stability during straight-line driving; in the steering mode, the wedge-shaped sliding column design of the auxiliary block 24 is used to automatically retract the side mechanism that does not need to be positioned to avoid interference with the rotating body.

[0048] The lifting assembly 12 lifts up the load-bearing rack 1 so that the guide vehicle body 2 is suspended in the air, and the telescopic sleeve 3 is extended and retracted by the cylinder to make the guide vehicle body 2 contact the ground, and then the driving wheel 6 rotates to make the guide vehicle body 2 turn as a whole.

[0049] like Figure 3 and Figure 4 As shown, specifically, the telescopic sleeve 3 is composed of an I-shaped support sleeve 31, a telescopic cylinder 32 and a bearing end cover 33, wherein the I-shaped top is fixed to the bottom end of the load-bearing shelf 1, and the bearing end cover 33 is engaged with the bearing slide groove 212 on the steering slide 7 through a rolling bearing, thereby synchronously driving the steering slide 7 to produce horizontal linear sliding and rotational steering when the cylinder is extended and retracted, thereby realizing precise position adjustment of the guide vehicle body 2 under the center of the shelf.

[0050] It should be noted that the steering skateboard 7 enables the main body 2 of the guiding vehicle to change its position relative to the carrying shelf 1 as needed after unlocking, realizing the front-wheel drive or rear-wheel drive function; its horizontal sliding force mainly comes from the linear rolling when the driving wheel 6 contacts the ground.

[0051] During actual operation, after the lifting assembly 12 lifts the main body 2 of the guiding vehicle for load reduction, the telescopic sleeve 3 precisely reduces the load and positions the main body 2 of the guiding vehicle, realizing in-situ steering when the driving wheel 6 thereon contacts the ground and bears the load of the telescopic sleeve 3, avoiding the problems of tire skidding and uneven load during traditional differential steering, and greatly improving the steering response speed and sensitivity.

[0052] As Figure 7 shown, a protruding locking key 211 is provided in the middle of the linkage shaft 21, a locking groove fitted with the locking key 211 is provided in the support sleeve 31, a release groove is communicated and opened below the locking groove, and the minimum inner diameter of the release groove is twenty centimeters larger than the maximum outer diameter of the locking key 211; when the main body 2 of the guiding vehicle does not need to steer and is in a straight running state, the telescopic sleeve 3 does not extend, and the locking key 211 on the linkage shaft 21 slides into the locking groove in the sleeve to realize the mechanical limit of the main body 2 of the guiding vehicle relative to the shelf; the telescopic cylinder 32 continues to extend to make the locking key 211 disengage from the locking groove and slide into the lower release groove, so that the locking can be released without resistance, realizing instantaneous unlocking, and preparing for subsequent lifting and load reduction and steering adjustment.

[0053] As Figure 4 and Figure 5 shown, a locking mating block 23 and a positioning mating block 22 are installed on the main body 2 of the guiding vehicle and are respectively matched with the locking block 41 and the positioning pressing block 42.

[0054] As Figure 5 shown, the locking mating block 23 includes a mating top block 231 at the top and a locking card slot 232 at the lower part, and a locking tongue 411 is horizontally slidably installed at the bottom of the locking block 41.

[0055] As Figure 8 shown, the locking tongue 411 is horizontally slid into the locking card slot 232 through an electric cylinder, and the positioning mating block 22 is engaged with the positioning pressing block 42 through a mating card slot 221 recessed thereon. When the shelf is in contact with the main body 2 of the guiding vehicle, the electric cylinder drives the locking tongue 411 to horizontally slide into the locking card slot 232, and the mating top block 231 ensures no gap in the up and down direction.

[0056] Further, an electrically controlled sliding column 412 that can telescopically slide is provided at the top of the locking tongue 411. The extended electrically controlled sliding column 412 is snapped into the limiting groove 233 to form a double-layer locking, effectively preventing the accidental retraction of the electric cylinder or the tripping caused by external vibration. The double engagement greatly improves the resistance to lateral shear force and longitudinal impact, ensuring no relative slip during heavy-load straight running and accelerating braking.

[0057] In this embodiment, only when the electric cylinder acts in the reverse direction, the existing control system is used in this embodiment to synchronously trigger the retraction of the electrically controlled sliding column 412 and the locking tongue 411 thereon, so as to complete the quick unlocking.

[0058] As Figure 4 shown, an auxiliary block 24 is installed on the outside of the positioning and fitting block 22 and at the top of the guiding vehicle body 2. The inner side of the auxiliary block 24 is wedge-shaped and a sliding and telescopic auxiliary sliding column 241 is installed thereon. An auxiliary sliding groove 43 that is engaged with the auxiliary sliding column 241 is formed on the positioning pressing block 42. Before the locking tongue 411 is inserted or lifted, the auxiliary sliding column 241 is first guided into the auxiliary sliding groove 43 to achieve rough alignment. As the auxiliary sliding column 241 further extends, the wedge-shaped surface presses the positioning pressing block 42 tightly into the groove of the positioning and fitting block 22 to eliminate the residual gap and complete the fine positioning.

[0059] In this embodiment, by adopting the combination of the locking and clamping block 41 that slides up and down and the auxiliary sliding column 241, dynamic locking and unlocking in different modes are realized, ensuring the reliability and safety during the straight running and steering switching processes, and avoiding the mutual interference between mechanisms at the same time.

[0060] It should be noted that, in this embodiment, when the guiding vehicle body 2 steers, the locking and clamping block 41 and the positioning pressing block 42 are allowed to automatically overlap and retract through the sliding guide rails on one side, avoiding collision interference with the rotating guiding vehicle body 2. That is, both of them are vertically slidably installed at the bottom of the carrying shelf 1 for sliding and retracting to avoid interference.

[0061] As Figure 1 and Figure 6 shown, the lifting assembly 12 includes a lifting cylinder 121, a scissor lift 122 and a lifting bottom plate 123. The lifting cylinder 121 is used to provide power. The top of the scissor lift 122 is connected to the carrying shelf 1 and the bottom is connected to the lifting bottom plate 123. Two lifting cylinders 121 are in a group and are respectively connected to the hinge joints of the scissor lift 122 and the lifting bottom plate 123, the top end of the scissor lift 122 and the bottom end on the same side thereof. Four universal wheels 11 are installed at the bottom end of the carrying shelf 1 and are respectively located at the four corner points of the bottom of the carrying shelf 1.

[0062] As Figure 1-8As shown in the figure, during the operation of the present invention, when the logistics transport vehicle is in a straight driving state, all the locking components are in a locked state, and the guiding vehicle body 2 is tightly fixed to the carrying shelf 1.

[0063] First, when it is necessary to turn or implement the front-wheel drive or rear-wheel drive function, the lifting cylinder 121 activates the lifting assembly 12 to lift a part of the carrying shelf 1, so that the guiding vehicle body 2 is unlocked from the carrying shelf 1 and enters the "force-relieving suspended" state, and at this time all the locking components are unlocked. Subsequently, the telescopic sleeve 3 pushes the guiding vehicle body 2 to contact the ground through the built-in telescopic cylinder 32, so that the driving wheels 6 on the guiding vehicle body obtain just enough frictional force to drive the vehicle body to move, thereby avoiding the positive pressure of carrying all the goods, and thus increasing the frictional force; further, the driving wheels 6 roll linearly to make the guiding vehicle body move forward or backward, and then the steering slide plate 7 and the guiding vehicle body 2 slide relatively, whereby the position of the guiding vehicle body 2 changes. If the position is forward, it is in the front-wheel drive state, and conversely, if it is backward, it is in the rear-wheel drive state.

[0064] It is worth noting that the main advantages of the front-wheel drive mode are rapid steering response and flexible handling. When adopting the front-wheel drive system, since the driving device is located at the front of the guiding vehicle body 2, the vehicle has a lower inertial burden and better steering sensitivity when turning, which is suitable for storage environments with narrow spaces or frequent turning, improving the mobility and operation efficiency of the vehicle.

[0065] The rear-wheel drive mode, on the other hand, can provide stronger traction and higher stability. Especially in the case of heavy loads, the rear-wheel drive system can make more effective use of the driving force at the rear of the vehicle, improving the acceleration performance and climbing ability, thereby enhancing the power output and overall stability of the vehicle when carrying larger goods. The rear-wheel drive mode can reduce the slipping phenomenon of the driving wheels 6 when passing through low-friction roads, which is beneficial to the smoothness of long-distance straight driving.

[0066] In addition, due to the position change of the guiding vehicle body resulting in front-back asymmetry, the symmetrically arranged locking components may interfere and collide with the rotating guiding vehicle body. Therefore, through the design of the locking block 41 and the positioning pressing block 42 that slide up and down, the side that does not need to be positioned can be folded up and stacked upward, improving the stability of the mechanism operation.

[0067] Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic guided transport vehicle for logistics warehousing, comprising a load-bearing shelf (1) and a guide vehicle body (2), wherein the guide vehicle body (2) is installed at the bottom of the load-bearing shelf (1), and the guide vehicle body (2) is used to drive the load-bearing shelf (1) to move, characterized in that: The driving wheels (6) of the guide vehicle body (2) are Mecanum wheels; a lifting assembly (12) is installed on the load-bearing shelf (1); The guide vehicle body (2) is rotatably arranged at the bottom center position of the load-bearing shelf (1); A telescopic sleeve (3) is provided at the bottom center of the load-bearing shelf (1), and a steering slide (7) capable of horizontal linear sliding is provided on the upper part of the guide vehicle body (2), and the steering slide (7) is rotatably mounted on the telescopic sleeve (3) via a linkage shaft (21) thereon; The bottom of the load-bearing shelf (1) is also provided with a locking component for locking the positioning guide vehicle body (2); The lifting assembly (12) lifts up the load-bearing shelf (1) so that the guide vehicle body (2) is suspended in the air, and the telescopic sleeve (3) is extended and retracted by the cylinder so that the guide vehicle body (2) contacts the ground, and then the driving wheel (6) rotates so that the guide vehicle body (2) turns as a whole.

2. The automatic guided transport vehicle for logistics warehousing according to claim 1, characterized in that: The telescopic sleeve (3) comprises an I-shaped support sleeve (31), a telescopic cylinder (32) and a bearing end cover (33); the I-shaped top of the support sleeve (31) is mounted on the bottom end of the load-bearing shelf (1); a linkage shaft (21) is mounted inside the support sleeve (31) for sliding movement up and down; a plurality of telescopic cylinders (32) are mounted in a circular array outside; the lower end of the telescopic cylinder (32) is connected to the bearing end cover (33); the inside of the bearing end cover (33) is mounted in cooperation with a bearing slide groove (212) provided on the steering slide plate (7) through a rolling bearing.

3. The automatic guided transport vehicle for logistics warehousing according to claim 2, characterized in that: A protruding locking key (211) is arranged in the middle of the linkage shaft (21), a locking groove engaged with the locking key (211) is arranged in the support sleeve (31), a release groove is arranged below the locking groove, and the minimum inner diameter of the release groove is not less than the maximum outer diameter of the locking key (211).

4. An automatic guided transport vehicle for logistics warehousing according to any one of claims 1 to 3, characterized in that: The locking assembly comprises a straight-moving locking member (4) and a steering locking member (5), wherein the straight-moving locking member (4) and the steering locking member (5) are arranged at a 90-degree angle to each other and have the same component composition, both comprising a locking block (41) and a positioning pressing block (42); The guide vehicle body (2) is provided with a locking matching block (23) and a positioning matching block (22) which respectively match the locking clamping block (41) and the positioning pressing block (42).

5. The automatic guided transport vehicle for logistics warehousing according to claim 4, characterized in that: The locking matching block (23) comprises a matching top block (231) at the top and a locking card slot (232) at the bottom, and a locking tongue (411) is horizontally slidably mounted at the bottom of the locking card block (41); The locking tongue (411) is inserted into the locking slot (232) by means of horizontal sliding of the electric cylinder, and the positioning matching block (22) is engaged with the positioning pressing block (42) through the matching slot (221) recessed thereon.

6. The automatic guided transport vehicle for logistics warehousing according to claim 5, characterized in that: A telescopically slidable electrically controlled sliding column (412) is disposed on the top of the locking tongue (411), and the electrically controlled sliding column (412) slides upward to engage with a limiting groove (233) in the locking groove (232).

7. The automatic guided transport vehicle for logistics warehousing according to claim 4, characterized in that: An auxiliary block (24) is installed on the outside of the positioning matching block (22) and at the top of the guide vehicle body (2); the inside of the auxiliary block (24) is wedge-shaped and a sliding and telescopic auxiliary sliding column (241) is installed thereon; and the positioning pressing block (42) is provided with an auxiliary sliding groove (43) engaged with the auxiliary sliding column (241).

8. An automated guided transport vehicle for logistics warehousing according to any one of claim 4, characterized in that: The locking block (41) and the positioning pressing block (42) are both slidably mounted on the load-bearing shelf (1).

9. The automatic guided transport vehicle for logistics warehousing according to claim 1, characterized in that: The lifting assembly (12) comprises a lifting cylinder (121), a scissor frame (122) and a lifting base plate (123); the lifting cylinder (121) is used to provide power; the scissor frame (122) is connected to the load-bearing shelf (1) at the top and to the lifting base plate (123) at the bottom.

10. The automatic guided transport vehicle for logistics warehousing according to claim 9, characterized in that: The lifting cylinders (121) are arranged in groups of two and are respectively connected to the hinge of the scissor frame (122) and the lifting base plate (123), the top of the scissor frame (122) and the bottom on the same side thereof; a universal wheel (11) is installed at the bottom end of the load-bearing shelf (1).

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