A splicable AGV carrier chassis and working method thereof

Abstract

The present invention discloses a splicable AGV carrier chassis and a working method thereof, which relate to the technical field of workshop transfer vehicles, and include a frame body and carrying wheels, wherein the carrying wheels are connected to the frame body through an independent suspension shock-absorbing assembly, and each side of the frame body is provided with a splicing locking mechanism for realizing the splicing of multiple frame bodies; the splicing locking mechanism includes a connecting base fixedly connected to the frame body, the connecting base is hinged with a splicing body, the outer side of the splicing body is provided with a locking groove and a locking core, and the locking core is used to be inserted into the locking groove of the corresponding splicing locking mechanism for splicing; a rotating groove is provided in the splicing body, a rotatable locking tongue is provided in the rotating groove, and a locking tongue handle is fixedly provided on the locking tongue, and the distal end of the locking tongue handle is connected to the splicing body through an elastic member; the present invention can realize the free splicing of a plurality of AGV carrier chassis front and back and left and right, greatly improving the transportation capacity of the AGV carrier chassis when facing large-volume and heavy-weight goods, and improving the logistics efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of workshop transfer vehicles, and in particular to a splicable AGV transport chassis and a working method thereof. Background Art

[0002] In modern industrial production, the automatic guided vehicle (AGV) chassis plays an increasingly important role in factory cargo transportation due to its high efficiency and flexibility. AGV chassis are widely used to transport various types of goods, from lightweight small express to large-volume heavy machinery parts.

[0003] However, the types of factory cargo vary, including light and small volume, large volume and light weight, and large volume and heavy weight. Existing AGV chassis designs are often optimized for specific transport volumes and weights, which limits their application capabilities when facing large or heavy cargo. In these cases, factories often need to rely on other modes of transportation to complete the handling of goods, which reduces overall transportation efficiency and increases the factory's equipment costs. Therefore, designing an AGV chassis to adapt to the transportation needs of multiple scenarios and multiple types of cargo has become a problem that needs to be solved urgently. Summary of the invention

[0004] In response to one or more deficiencies in the above-mentioned prior art, the present invention provides a splicable AGV carrier chassis and a working method thereof, which have high flexibility and adaptability and can meet the needs of various transportation scenarios, including the efficient transportation of lightweight and large-volume goods, as well as the transportation needs of large-volume and high-weight goods, thereby better adapting to the diverse transportation requirements within the factory and improving the overall logistics efficiency.

[0005] In order to achieve the above object, the present invention adopts one or more of the following technical solutions:

[0006] In a first aspect, a splicable AGV carrier chassis is provided, comprising a frame body and a carrier wheel, wherein the carrier wheel is connected to the frame body through an independent suspension shock-absorbing assembly, and a splicing locking mechanism extending outward is provided on the side of the frame body, for realizing splicing of multiple frame bodies in the front-to-back direction and the left-to-right direction;

[0007] The splicing locking mechanism comprises a connection base fixedly connected to the frame body, the connection base is hinged with a splicing body, the outer side of the splicing body is provided with a locking groove and a locking core, and the locking core is used to be inserted into the locking groove of the splicing locking mechanism connected to the splicing;

[0008] A rotation groove is provided in the splicing body, a rotatable lock tongue is provided in the rotation groove, a lock tongue handle is fixedly provided on the lock tongue, and the distal end of the lock tongue handle is connected to the splicing body by an elastic member; the lock tongue is initially in an inclined state, and is rotated by force during the splicing process. When the locking core is inserted into the locking groove, the lock tongue is reset under the action of the elastic member and abuts against the rotation groove of the docking splicing locking mechanism, thereby limiting the linear movement of the lock tongue and realizing splicing locking.

[0009] As a further implementation method, an arc-shaped protrusion is fixedly provided in the rotating groove, an arc-shaped groove is opened on the lock tongue, the arc-shaped protrusion is embedded in the arc-shaped groove and forms a sliding connection, and the lock tongue rotates when the arc-shaped protrusion and the arc-shaped groove slide relative to each other.

[0010] As a further implementation, a connecting column is fixedly provided on the splicing body, one end of the elastic member is fixedly connected to the lock tongue handle, and the other end is connected to the connecting column.

[0011] As a further implementation method, the lock tongue adopts a semicircular locking block. During the docking process between the locking core and the locking groove, the rectangular surface of the lock tongue is forced to rotate. After the locking core is inserted into the locking groove, the lock tongue is reset to an inclined state. At this time, the arc surface of the lock tongue abuts against the docking rotating groove to form a linear lock.

[0012] As a further implementation, the splicing locking mechanism further includes a third shock absorber and a shock absorber mounting seat, one end of the third shock absorber is hinged to the connecting base, and the other end is hinged to the splicing body through the shock absorber mounting seat.

[0013] As a further implementation method, the frame body includes a whole vehicle frame and a frame bottom plate fixed to the bottom of the whole vehicle frame, and a fixing frame is fixedly installed on the frame bottom plate; the independent suspension shock absorbing assembly is connected between the fixing frame and the carrying wheels, so that each group of carrying wheels has independent shock absorption.

[0014] As a further implementation, the independent suspension shock absorbing assembly includes a first shock absorber, one end of which is hinged to the fixing frame, and the other end of which is hinged to a motor base plate, and a motor is mounted on the motor base plate.

[0015] As a further implementation method, a first hinge seat is installed on the frame bottom plate, and a second hinge seat is installed on the motor bottom plate. The first hinge seat is rotatably connected to the second hinge seat. The independent suspension shock absorbing assembly can drive the carrying wheel to rotate relative to the frame bottom plate through the second hinge seat, thereby improving adaptability to complex terrain and improving shock absorption effect, and better meeting the transportation of large volume and heavy weight goods.

[0016] As a further implementation, the output shaft of the motor is connected to a reducer, the end of the output shaft of the reducer is connected to an axle via a stepped shaft, and the end of the axle is fixedly connected to the carrying wheel.

[0017] As a further implementation method, the independent suspension shock absorbing assembly also includes a second shock absorber, the bottom of which is installed on the stepped shaft, and the top of the second shock absorber is used to be provided with a connecting suspension device for connecting to the top load-bearing platform, thereby further reducing the vibration during cargo transportation and making the transport chassis more stable.

[0018] As a further implementation, a flange bearing is provided on the outer circumferential surface of the stepped shaft, a shock absorbing bracket is fixedly connected to the outer ring of the flange bearing, and the shock absorbing bracket is hingedly connected to the bottom of the second shock absorber.

[0019] In a second aspect, a working method of a splicable AGV transport chassis is provided, based on a splicable AGV transport chassis as described in the above scheme, comprising:

[0020] When a single chassis cannot meet the transportation needs, align the spliced ​​locking structures of the front and rear or left and right adjacent chassis horizontally, insert the locking core into the corresponding locking grooves to complete the locking;

[0021] After the transportation is completed or when it is necessary to split the transportation, turn the lock tongue handle counterclockwise to move the two spliced ​​chassis away from each other to complete the unlocking.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0023] 1. The present invention utilizes a splicing locking mechanism to realize free splicing of several AGV transport chassis front and back and left and right, and can be spliced ​​into overall transport components of different shapes or volumes under different working conditions. Through the coordinated work of multiple transport chassis, the transport capacity of the AGV transport chassis when facing large-volume and heavy-weight goods is greatly improved; and the one-time carrying and transporting capacity can also be increased, thereby improving logistics efficiency.

[0024] 2. The AGV carrier chassis of the present invention can be selectively spliced ​​through a splicing locking mechanism, and can be widely used in transporting various types of goods, including but not limited to small-volume and lightweight, small-volume and heavy-weight, large-volume and lightweight, large-volume and heavy-weight goods, etc., to better adapt to the diverse transportation requirements within the factory, without the need for other transportation methods, reducing labor intensity and greatly improving overall logistics efficiency.

[0025] 3. In the present invention, the carrying wheels are mounted on the frame body through an independent suspension shock-absorbing assembly, and each Mecanum wheel is equipped with an independent suspension shock-absorbing assembly, which can make the carrying chassis more flexible, move or transport in a narrow space, and also make the carrying chassis more stable, thereby ensuring the reliability and stability of cargo transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0027] Figure 1 A schematic diagram of a single carrier chassis structure in one or more embodiments of the present invention;

[0028] Figure 2 A top view of a multi-carrier chassis assembly in one or more embodiments of the present invention;

[0029] Figure 3 A schematic diagram of the splicing of a multi-carrying chassis in one or more embodiments of the present invention;

[0030] Figure 4 A schematic diagram of a partial structure of a single carrier chassis in one or more embodiments of the present invention;

[0031] Figure 5 A schematic diagram of the structure of an independent suspension shock absorbing assembly in one or more embodiments of the present invention;

[0032] Figure 6 A schematic diagram of the structure of a splicing locking mechanism in one or more embodiments of the present invention;

[0033] Figure 7 It is a schematic diagram of the structure of the spliced ​​locking mechanism structure after the lock tongue is hidden in one or more embodiments of the present invention;

[0034] Figure 8 A schematic diagram of the initial state of the splicing locking mechanism in one or more embodiments of the present invention;

[0035] Fig. 9 A schematic diagram of a splicing process of a splicing locking mechanism in one or more embodiments of the present invention;

[0036] Fig.10 It is a schematic diagram of the locking state of the splicing locking mechanism in one or more embodiments of the present invention.

[0037] In the figure: 1. frame; 2. carrier wheels; 3. independent suspension shock absorber assembly; 4. splicing locking mechanism;

[0038] 101, vehicle frame; 102, frame bottom plate; 103, fixing frame; 104, fixing seat assembly;

[0039] 201, axle;

[0040] 301, first shock absorber; 302, motor base plate; 303, motor; 304, reducer; 305, reducer fixing frame; 306, stepped shaft; 307, flange bearing; 308, shock absorbing bracket; 309, second shock absorber; 310, connecting suspension device; 311, first hinge seat; 312, second hinge seat; 313, pin shaft;

[0041] 401, connecting base; 402, splicing body; 403, locking core; 404, locking groove; 405, rotating groove; 406, locking tongue; 407, arc-shaped protrusion; 408, arc-shaped groove; 409, locking tongue handle; 410, connecting seat; 411, nylon elastic rope; 412, connecting column; 413, third shock absorber; 414, shock absorber mounting seat. DETAILED DESCRIPTION

[0042] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0044] Embodiment 1

[0045] In a typical embodiment of the present application, a splicable AGV carrier chassis is provided, such as Figure 1-Figure 10 As shown, it includes a frame body 1 and a carrying wheel 2, the carrying wheel 2 is connected to the frame body 1 through an independent suspension shock-absorbing assembly 3, and a splicing locking mechanism 4 extending outward is provided on the side of the frame body 1, which is used to realize the splicing of multiple frame bodies 1 in the front-to-back direction and the left-to-right direction;

[0046] The splicing locking mechanism 4 comprises a connection base 401 installed on the edge side of the frame body and hingedly connected to the frame body, the connection base is hingedly connected with a splicing body 402, and the outer side of the splicing body is provided with a locking groove 404 and a locking core 403, and the locking core is used to be inserted into the locking groove of the corresponding splicing locking mechanism for splicing;

[0047] A rotating groove 405 is provided in the splicing body, a rotatable locking tongue 406 is provided in the rotating groove, a locking tongue handle 409 is fixedly provided on the locking tongue, and the distal end of the locking tongue handle is connected to the splicing body through an elastic member; when the locking tongue is driven to rotate, the elastic member extends; after the splicing is completed, the elastic member can drive the locking tongue to automatically reset; after the locking tongue is reset, it abuts against the rotating groove of the docked splicing locking mechanism to block the movement and complete the locking.

[0048] Specifically, Figure 1 As shown, the AGV transport chassis of this embodiment has a frame body 1 as the skeleton, and is driven and steered by four sets of transport wheels 2. The chassis as a whole is an axisymmetric structure, which is conducive to stability during transport and is easy to produce and assemble. Figure 3 and Figure 4 As shown, the frame body 1 includes a whole vehicle frame 101 and a frame bottom plate 102 fixedly mounted at the bottom of the whole vehicle frame, a fixing frame 103 and a fixing seat assembly 104 are fixedly mounted on the frame bottom plate, the fixing frame 103 is used to connect with the independent suspension shock absorbing assembly 3, and the fixing seat assembly 104 includes a plurality of fixing rods arranged on the front and rear sides and the left and right sides inside the frame body, and is used to install the splicing locking mechanism 4. Among them, the setting of the plurality of fixing rods only needs to meet the requirement of fixing one end of the connecting base of the splicing locking mechanism inside the frame body, and the specific combination form and installation method are not limited.

[0049] In this embodiment, the transport wheels 2 are Mecanum wheels. To make the transport chassis more stable, each set of transport wheels 2 is equipped with an independent suspension shock-absorbing assembly 3, which also makes transportation more flexible. In addition, considering the limited carrying capacity and applicable scenarios of a single chassis, this embodiment is designed with a splicing locking mechanism that can be installed on the front and rear sides and left and right sides of the transport chassis. Figure 2 and Figure 3 As shown, two adjacent transport chassis can be spliced ​​together through a splicing locking mechanism 4, thereby realizing flexible splicing between multiple transport chassis. According to the characteristics and needs of the actual transported goods, the corresponding number of chassis and splicing method can be selected to realize the coordinated work of several transport chassis, adapt to the diverse transportation needs in modern factories, and effectively improve the overall logistics transportation efficiency.

[0050] Specifically, four sets of independent suspension shock absorbing components 3 are arranged inside the vehicle frame 1, and the four sets of independent suspension shock absorbing components 3 are respectively connected to the four groups of carrying wheels 2. At the same time, the independent suspension shock absorbing components 3 are also used to be fixedly connected to the load-bearing platform on the top of the carrying chassis to realize the smooth and efficient transportation of the goods placed on the load-bearing platform. Figure 1-Figure 5 As shown, a frame bottom plate 102 is fixedly installed inside the vehicle frame 101, a fixing frame 103 is fixedly installed on the frame bottom plate, and an independent suspension shock absorbing assembly 3 is connected between the fixing frame 103 and the carrier wheels 2, so that each set of carrier wheels has independent shock absorption. Figure 1 and Figure 3 As shown, the fixing frame 103 is fixedly installed in the middle of the length direction of the frame bottom plate 102. Two fixing frames 103 are provided, which are symmetrically arranged on the left and right sides of the frame body 1. The front and rear sides of each fixing frame 103 are respectively connected with a set of independent suspension shock absorbing components 3, which are further connected to the front and rear carrying wheels, so that each set of carrying wheels 2 is installed on the fixing frame through a set of independent suspension shock absorbing components 3 to achieve independent suspension shock absorption.

[0051] Furthermore, the independent suspension shock absorbing assembly 3 includes a first shock absorber 301, a motor base plate 302 and a driving assembly for driving the carrier wheel, such as Figure 5 As shown, the top end of the first shock absorber 301 is hingedly connected to the fixing frame 103, and the bottom end is hingedly connected to the motor base plate 302. The driving assembly is installed on the motor base plate 302, and the driving assembly includes a motor 303, a reducer 304 and a stepped shaft 306 for driving the carrying wheel, wherein the motor 303 is fixedly installed on the motor base plate 302, and the output shaft of the motor 303 is connected to the reducer 304, and the end of the output shaft of the reducer 304 is fixedly provided with a stepped shaft 306, and the power is transmitted to the carrying wheel 2 through the stepped shaft 306. Specifically, the carrying wheel 2 is connected to the axle 201, and the end of the stepped shaft 306 is fixedly connected to the axle 201, so as to realize the use of the motor to drive the carrying wheel to move and turn. Among them, as Figure 5 As shown, the reducer 304 is fixedly mounted on the motor base plate 302 by means of a reducer fixing frame 305 , and the entire driving assembly can move with the motor base plate 302 .

[0052] Furthermore, in order to realize independent suspension shock absorption, the independent suspension shock absorption assembly 3 of this embodiment is further provided with a first hinge seat 311 and a second hinge seat 312 which are rotatably connected, such as Figure 5As shown, the first hinge seat 311 and the second hinge seat 312 are installed at the connection between the frame bottom plate 102 and the motor bottom plate 302, the first hinge seat 311 is fixedly installed on the frame bottom plate 102, the second hinge seat 312 is fixedly installed on the motor bottom plate 302, the first hinge seat 311 and the second hinge seat 312 are rotatably connected through the pin 313, and can rotate relative to each other within a certain angle range. In this embodiment, the first shock absorber cooperates with the rotatably connected first hinge seat and the second hinge seat, giving the carrying wheel a larger shock-absorbing movement space, and the four groups of carrying wheels are respectively equipped with independent suspension shock-absorbing components, so that the carrying chassis can achieve multi-posture shock absorption on complex roads, and each group of carrying wheels can better fit the rugged road surface to ensure stable driving.

[0053] In this embodiment, when the carrying wheel encounters an obstacle or passes through a rough road, the carrying wheel can drive the motor, reducer and other components through the wheel shaft and then drive the motor bottom plate to rotate around the pin shaft to a certain angle. At this time, the wheel shaft is tilted, and the first shock absorber is compressed to resist the rotation of the carrying wheel, making the driving process more stable. In addition, this design allows each group of carrying wheels to have different degrees of shock absorption displacement, greatly improving the stability of the carrying chassis. At the same time, the independent suspension shock absorption component realizes the rotation of the carrying wheel and the motor bottom plate relative to the frame bottom plate and the fixed frame through the second hinge seat and the pin shaft, improving the adaptability of the carrying chassis to different carrying environments and terrains in the factory, optimizing the shock absorption effect, and better meeting the transportation of large volume and heavy weight goods.

[0054] Furthermore, the independent suspension shock absorbing assembly 3 also includes a second shock absorber 309, such as Figure 5 As shown, the bottom of the second shock absorber 309 is installed on the stepped shaft 306 through a shock absorbing bracket 308, and the top of the second shock absorber 309 is provided with a connecting suspension device 310 for connecting with the top load-bearing platform, which can increase the support area, thereby improving the stability and safety of the transported goods during the transportation process. Figure 1 and Figure 5 As shown, two second shock absorbers 309 are vertically arranged in each independent suspension shock absorbing assembly, and the two second shock absorbers 309 are mounted on the same shock absorbing bracket 308 and distributed on both sides of the stepped shaft 306 through the shock absorbing bracket 308. The bottom of the second shock absorber 309 is hinged with the shock absorbing bracket 308, and the shock absorbing bracket 308 is mounted on the outer cylindrical surface of the stepped shaft 306 through the front and rear two flange bearings 307, so that the second shock absorber is not affected by the rotation of the carrier wheel and maintains a good and stable support. In this embodiment, the first shock absorber, the second shock absorber and the two hinge seats cooperate with each other, so that the carrier wheel can achieve shock absorbing movement in the up and down and tilt directions, and realize a larger shock absorbing movement space.

[0055] In this embodiment, the independent suspension shock absorbing assembly has the following working principle under the above settings:

[0056] In view of different factory environments and the weight of heavy objects, this embodiment uses a multi-wheel independent suspension method, that is, each set of carrier wheels of the carrier chassis is provided with an independent suspension shock-absorbing assembly so that it can independently absorb shock. During the movement, the four sets of carrier wheels can have different shock absorption levels and do not affect each other, thereby effectively maintaining the stability of the vehicle body. During the operation of the carrier chassis, when the carrier wheel is impacted by foreign objects on the road or the pressure of the top cargo changes, the second shock absorber is connected to the top bearing platform and the shock-absorbing bracket to withstand the further action of the force. Under the action of the force, the second shock absorber is compressed and contracted, and the wheel axle produces an upward displacement. During the displacement process, the first shock absorber is compressed and contracted to further withstand the action of the force. The process of displacement between the motor and the carrier wheel is carried out around the first hinge seat and the second hinge seat. Among them, the first hinge seat is fixedly set on the frame bottom plate, and the second hinge seat is fixedly set on the motor bottom plate. The two can rotate relative to each other to help achieve the displacement change during shock absorption.

[0057] Specifically, combined Figure 1 and Figure 4 As shown, the splicing locking mechanism 4 is fixedly installed on the edge side of the frame bottom plate 102 through the fixing seat assembly 104 and extends out of the frame body 1 to complete the splicing between adjacent transport chassis. In this embodiment, two splicing locking mechanisms 4 are respectively arranged on the long side of the transport chassis, i.e., the left and right sides of the frame body 1, and one splicing locking mechanism 4 is respectively arranged on the short side of the transport chassis, i.e., the front and rear sides of the frame body 1. Of course, in other embodiments, the specific number and installation position can be selected according to the actual working conditions and needs of the factory, and this application does not impose any restrictions on this.

[0058] Further, combined with Figure 4 and Figure 6 As shown, the splicing locking mechanism 4 is composed of a connecting base 401 and a splicing body 402. The connecting base 401 is fixedly mounted on the fixing seat assembly 104 inside the frame body 1, and the splicing body 402 is arranged outside the frame body 1 and is hingedly connected to the connecting base 401. The splicing body 402 extends horizontally outward, and a locking groove 404 and a locking core 403 are arranged at the end of the splicing body 402. Figure 6 As shown, in this embodiment, the locking groove 404 and the locking core 403 are positioned in parallel but extend outward at different distances. The locking core 403 is located at the distal end relative to the locking groove 404. When the chassis are spliced, the locking core can be inserted into the locking groove of the connected carrier chassis. At the same time, the locking core of the docked carrier chassis is inserted into the locking groove at the proximal end and is locked and fixed by the internal locking structure, thereby completing the splicing of adjacent carrier chassis.

[0059] Further, combined with Figure 6 and Figure 7As shown, the internal locking structure includes a rotation groove 405, a lock tongue 406, a lock tongue handle 409 and a nylon elastic rope 411. The rotation groove 405 is set on the splicing body 402. The rotation groove 405 is located on the inner side of the locking core 403 and the outer side of the locking groove 404. The lock tongue 406 adopts a semicircular locking block and is embedded in the rotation groove 405. During the docking process between the locking core 403 and the locking groove 404, the locking core 403 will contact the rectangular surface of the lock tongue 406, and the lock tongue 406 is rotated by force to be parallel to the movement direction of the locking core 403, as shown in FIG. Fig. 9 In this embodiment, Figure 7 As shown, an arc-shaped protrusion 407 is provided in the rotation groove 405, and an arc-shaped groove 408 is provided at the bottom of the lock tongue 406. The length of the arc-shaped protrusion 407 is less than the extension length of the arc-shaped groove 408. The arc-shaped protrusion 407 is embedded in the arc-shaped groove 408 and can slide relatively. The lock tongue can rotate in the rotation groove through the relative sliding of the arc-shaped protrusion along the arc-shaped groove, and the rotation stroke is limited by the length relationship between the arc-shaped protrusion and the arc-shaped groove. The setting position of the arc-shaped protrusion and the arc-shaped groove determines the angle of the lock tongue relative to the splicing body. In this embodiment, the lock tongue handle 409 is welded on the outer circumferential surface of the lock tongue 406, and the far end of the lock tongue 406 is provided with a connection seat 410 for connecting the elastic member, as shown in FIG. Figure 6 and Figure 7 As shown, a connection column 412 is fixedly provided near the connection base on the splicing body 402, one end of a nylon elastic rope 411 is fixed on the connection seat 410, and the other end is fixed on the connection column 412. The nylon elastic rope can drive the lock tongue to rotate through elastic reset, thereby realizing the locking of the splicing locking mechanism. Specifically, when the locking core is inserted to drive the lock tongue to rotate counterclockwise, the nylon elastic rope stretches; when the locking core is inserted into the locking groove and the rotating grooves of the two splicing locking mechanisms are docked, the nylon elastic rope can drive the lock tongue to automatically reset. After the lock tongue is reset, it abuts against the rotating groove of the docking splicing locking mechanism, thereby limiting the freedom of linear movement and completing linear locking. Of course, in other embodiments, springs or other elastic members can also be used instead of nylon elastic ropes to play a role.

[0060] In addition, the splicing locking mechanism 4 also includes a third shock absorber 413 and a shock absorber mounting seat 414. Figure 6 and Figure 7 As shown, the shock absorber mounting seat 414 is fixedly arranged on the side of the splicing body 402 away from the lock tongue handle, and the shock absorber mounting seat 414 is connected to the splicing body 402 by bolts. One end of the third shock absorber 413 is hinged to the connection base 401, and the other end is hinged to the shock absorber mounting seat 414, which can convert the rigid collision in the process of splicing the vehicle body into a flexible collision, provide necessary buffering, avoid the large impact load on the parts due to the excessive splicing speed, and make the spacing distance of the spliced ​​vehicles elastically variable to reduce the stress of the splicing structure.

[0061] In this embodiment, under the above settings, the splicing locking mechanism works as follows:

[0062] In the initial state, the nylon elastic rope is in a taut state and the lock tongue is in a tilted state. Figure 8 As shown. During the splicing process of the two splicing locking mechanisms, the locking core at the front end of the splicing body will be inserted into the locking groove of the other party, and at the same time, the locking tongues of the two splicing locking mechanisms will contact and rotate. During the splicing process, the locking tongue will rotate from an inclined state to a vertical state to facilitate the connection of the two splicing locking mechanisms, as shown. Fig. 9 After the two splicing locking mechanisms are spliced ​​together, the lock tongue is reset under the elastic tension of the nylon elastic rope, and changes from a vertical state to an inclined state again. In this state, the lock tongue abuts against the rotating groove of the other party and is limited by the rotating groove. The two splicing locking mechanisms are in a locked state, thereby completing the splicing and locking. Fig.10 In the splicing process, the splicing body will rotate around the connection base due to the force, and the third shock absorber will be compressed by the force to resist the displacement and play a role in buffering and shock absorption.

[0063] And, in this embodiment, the first shock absorber, the second shock absorber and the third shock absorber are RC spring damping shock absorbers, wherein the first shock absorber and the second shock absorber act on the carrying wheel part to buffer the impact load caused by loading and unloading goods and the impact load caused by road bumps, and delay the fatigue damage process of parts. The third shock absorber is used to make the splicing process softer, reduce the impact load caused by rapid splicing, make the spacing distance of the spliced ​​carrying chassis elastically variable, and reduce the stress of the splicing locking mechanism.

[0064] Embodiment 2

[0065] In another typical embodiment of the present invention, a working method of a splicable AGV carrier chassis based on the first embodiment is provided, comprising:

[0066] When a single chassis cannot meet the transportation needs, align the spliced ​​locking structures of the front and rear or left and right adjacent chassis horizontally, insert the locking core into the corresponding locking grooves to complete the locking;

[0067] After the transportation is completed or when it is necessary to split the transportation, turn the lock tongue handle counterclockwise to move the two spliced ​​chassis away from each other to complete the unlocking.

[0068] Specifically, when transporting small-volume goods, the goods can be transported on a single chassis without splicing.

[0069] When transporting large-volume lightweight goods or large-volume heavy goods, a single chassis cannot stably carry the goods. At this time, depending on the size of the goods, if the goods are long, a corresponding number of chassis are selected for front and rear splicing according to the length of the goods, and adjacent chassis are horizontally spliced ​​and locked using the splicing locking mechanism on the rear or front side of the frame body, so that they are connected end to end; if the width of the goods is large, a corresponding number of chassis are selected for left and right splicing according to the actual width, and adjacent chassis are horizontally spliced ​​and locked using the splicing locking mechanism on the left or right side of the frame body, forming a combined chassis with a multiple increase in transportation width, which can meet the transportation needs of large or heavy goods.

[0070] When two adjacent chassis are spliced, the splicing locking mechanisms on the two chassis are aligned, and one of the chassis is controlled to move linearly in the front-to-back direction or the left-to-right direction, so that the locking core on one chassis is gradually inserted into the locking groove of the other chassis. During this process, the locking core hits the lock tongue, causing it to rotate counterclockwise and drive the lock tongue handle to rotate, and the elastic member is tightened. Until the locking core passes through the lock tongue and completely enters the locking groove, the elastic member drives the lock tongue to rotate clockwise and reset, and the lock tongue abuts and engages with the other rotating groove, and the two splicing locking mechanisms are in a locked state; the chassis stop moving, and the splicing is completed.

[0071] When the transportation work is completed or the spliced ​​chassis needs to be disassembled due to different transportation requirements, the lock tongue handles of the two spliced ​​locking mechanisms are controlled to rotate counterclockwise to disengage the lock tongue from the position engaged with the rotating groove; one or two chassis are controlled to move in a straight line away from each other, thereby realizing the separation of the spliced ​​chassis.

[0072] This embodiment can solve the problem in the prior art that a single chassis cannot transport large or heavy goods due to volume or weight limitations through mechanical splicing, thereby significantly improving the logistics and transportation efficiency within the factory.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A splicable AGV carrier chassis, characterized in that: It includes a frame body and a carrying wheel, wherein the carrying wheel is connected to the frame body through an independent suspension shock-absorbing assembly, and a splicing locking mechanism extending outward is provided on the side of the frame body, which is used to realize the splicing of multiple frame bodies in the front-to-back direction and the left-to-right direction; The splicing locking mechanism comprises a connection base fixedly connected to the frame body, the connection base is hinged with a splicing body, the outer side of the splicing body is provided with a locking groove and a locking core, and the locking core is used to be inserted into the locking groove of the splicing locking mechanism connected to the splicing; A rotation groove is provided in the splicing body, a rotatable lock tongue is provided in the rotation groove, a lock tongue handle is fixedly provided on the lock tongue, and the distal end of the lock tongue handle is connected to the splicing body through an elastic member; a connecting column is fixedly provided on the splicing body, one end of the elastic member is fixedly connected to the lock tongue handle, and the other end is connected to the connecting column; The lock tongue adopts a semicircular locking block, and the lock tongue is initially in an inclined state. During the docking process between the locking core and the locking groove, the rectangular surface of the lock tongue is forced to rotate vertically. After the locking core is inserted into the locking groove, the lock tongue is reset to an inclined state under the action of an elastic member. At this time, the arc surface of the lock tongue abuts against the docking rotating groove to form a linear lock, thereby limiting the linear movement of the lock tongue.

2. The connectable AGV carrier chassis according to claim 1, characterized in that: An arc-shaped protrusion is fixedly provided in the rotating groove, an arc-shaped groove is opened on the locking tongue, the arc-shaped protrusion is embedded in the arc-shaped groove and forms a sliding connection, and the locking tongue rotates when the arc-shaped protrusion slides relative to the arc-shaped groove.

3. The connectable AGV carrier chassis according to claim 1, characterized in that: The splicing locking mechanism also includes a third shock absorber and a shock absorber mounting seat. One end of the third shock absorber is hinged to the connecting base, and the other end is hinged to the splicing body through the shock absorber mounting seat.

4. The connectable AGV carrier chassis according to claim 1, characterized in that: The frame body includes a whole vehicle frame and a frame bottom plate fixed to the bottom of the whole vehicle frame, and a fixing frame is fixedly installed on the frame bottom plate; the independent suspension shock absorbing assembly is connected between the fixing frame and the carrying wheel; the independent suspension shock absorbing assembly includes a first shock absorber, one end of the first shock absorber is hinged to the fixing frame, and the other end is hinged to the motor bottom plate, and a motor is installed on the motor bottom plate.

5. The connectable AGV carrier chassis according to claim 4, characterized in that: A first hinge seat is installed on the frame bottom plate, a second hinge seat is installed on the motor bottom plate, and the first hinge seat is rotatably connected with the second hinge seat.

6. The connectable AGV carrier chassis according to claim 4, characterized in that: The output shaft of the motor is connected to a reducer, the end of the output shaft of the reducer is connected to a wheel axle through a stepped shaft, and the end of the wheel axle is fixedly connected to the carrying wheel.

7. The connectable AGV carrier chassis according to claim 6, characterized in that: The independent suspension shock absorbing assembly also includes a second shock absorber, the bottom of which is installed on the stepped shaft, and the top of the second shock absorber is used to be provided with a connecting suspension device for connecting to the top bearing platform; a flange bearing is provided on the outer cylindrical surface of the stepped shaft, and a shock absorbing bracket is fixedly connected to the outer ring of the flange bearing, and the shock absorbing bracket is hingedly connected to the bottom of the second shock absorber.

8. A method for operating a splicable AGV transport chassis, based on the splicable AGV transport chassis according to any one of claims 1 to 7, characterized in that: include: When a single chassis cannot meet the transportation needs, align the spliced ​​locking structures of the front and rear or left and right adjacent chassis horizontally, insert the locking core into the corresponding locking grooves to complete the locking; After the transportation is completed or when it is necessary to split the transportation, turn the lock tongue handle counterclockwise to move the two spliced ​​chassis away from each other to complete the unlocking.

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