A four-way vehicle

Abstract

The application discloses a four-way vehicle, which comprises a vehicle body, main roadway walking wheel components, sub-roadway walking wheel components, a two-way walking assembly, two wheel frame plates for mounting the main roadway walking wheel components, walking wheel direction switching, and lifting components for lifting and storing; the two wheel frame plates are symmetrically arranged on the outer sides of two vehicle body wall plates around the vehicle body, and relative movement exists between the two wheel frame plates and the vehicle body under the action of the lifting components; the main roadway walking wheel components are arranged on the two wheel frame plates, and the sub-roadway walking wheel components are arranged on two corresponding vehicle body wall plates in the vehicle body; the main roadway walking wheel components and the sub-roadway walking wheel components are in transmission connection; and the two-way walking assembly is arranged on the bottom plate of the vehicle body and is connected with part of the driving walking wheels in the main roadway walking wheel components. The four-way vehicle has the advantages of simple overall structure and convenient maintenance; the lifting components complete the walking direction switching of the main roadway and the sub-roadway, and also complete the storing and taking actions.

Description

TECHNICAL FIELD

[0001] The present application relates to a four-way vehicle. BACKGROUND

[0002] With the continuous development of warehousing, four-way vehicles are gradually used in warehouse.

[0003] At present, the existing warehouse shelves have been arranged, and the existing four-way vehicles with too large size cannot be used; if the existing four-way vehicles are replaced according to the existing four-way vehicles, the cost is too high, and enterprises are hesitant. Therefore, it is an urgent problem to propose a four-way vehicle with small size. SUMMARY

[0004] The present application provides a four-way vehicle, which adopts the technical scheme of:

[0005] A four-way vehicle, comprising a vehicle body, a main lane walking wheel component, a sub-lane walking wheel component and a bidirectional walking assembly, the main lane walking wheel component and the sub-lane walking wheel component are arranged around the vehicle body, and walk in the main lane and the sub-lane under the driving of the bidirectional walking assembly; the main lane walking wheel component and the sub-lane walking wheel component are transmission connected; the bidirectional walking assembly is arranged on the bottom plate of the vehicle body and connected with part of the driving walking wheels in the main lane walking wheel component, the main lane walking wheel component and the sub-lane walking wheel component work synchronously; further comprising two wheel frame plates for installing the main lane walking wheel component, walking wheel reversing and lifting component for lifting and storing, the two wheel frame plates are symmetrically arranged on the outer side surfaces of the two body wall plates around the vehicle body, and there is relative movement between the two wheel frame plates and the vehicle body under the action of the lifting component; the main lane walking wheel component is arranged on the two wheel frame plates, and the sub-lane walking wheel component is arranged on the two corresponding body wall plates in the vehicle body;

[0006] The lifting component comprises a driving source, two symmetrical lifting sub-units and a rod transmission component for connecting the two lifting sub-units to work synchronously, the driving source is fixed in the vehicle body, and the output of the driving source is connected with the rod transmission component through a transmission assembly;

[0007] Each of the two lifting sub-units comprises a screw rod elevator, a sliding plate and at least two rollers, the screw rod elevator is horizontally arranged on the bottom plate of the vehicle body, the input end of the screw rod elevator is connected with the rod transmission component, and the screw nut in the screw rod elevator is fixed on the sliding plate; the sliding plate is installed on the inner plate surface of the vehicle body wall plate, a cam groove with the same number as the rollers is formed on the sliding plate, a vertical waist-shaped groove corresponding to the cam groove is formed on the vehicle body wall plate, and a roller mounting hole is formed on the wheel frame plate, the roller is installed in the roller mounting hole and penetrates through the waist-shaped groove on the vehicle body wall plate to extend into the cam groove.

[0008] The four-way vehicle improves the switching of the walking direction of the main roadway and the sub roadway, and reduces the components and the size.

[0009] In the preferred technical solution of the present application, the two ends of the wheel carrier plate are pressed against the body wall plate by the pressing block with the cross section of the "L" type, the outer wheel carrier insert is arranged between the inner plate surface of the two ends of the wheel carrier plate and the outer plate surface of the body wall plate, the middle wheel carrier insert is arranged between the inner plate surface of the middle position of the wheel carrier plate and the outer plate surface of the body wall plate, and the wheel carrier plate insert is arranged on the outer plate surface of the middle position of the wheel carrier plate; the outer wheel carrier insert, the middle wheel carrier insert and the wheel carrier plate insert are fixed with the body wall plate; the roller mounting holes on the wheel carrier plate are distributed at intervals from the two ends to the middle of the wheel carrier plate, and the hole center points of all the roller mounting holes are located on a horizontal line; the shaft sleeves are arranged in all the roller mounting holes on the wheel carrier plate, the outer wall of the shaft sleeve is welded with the wheel carrier plate, the rollers are arranged in the shaft sleeves, and the two ends of the rollers are provided with the retaining rings. The design of the outer wheel carrier insert, the middle wheel carrier insert and the wheel carrier plate insert of the present application reduces the frictional contact area of the wheel carrier plate and the body wall plate; at the same time, the design of the shaft sleeve in the roller mounting hole simplifies the assembly steps and makes the maintenance and replacement convenient.

[0010] In the preferred technical solution of the present application, the main roadway walking wheel component includes two driving main roadway walking wheels and two driven main roadway walking wheels;

[0011] The sub roadway walking wheel component includes two groups of symmetrically arranged driving sub roadway walking wheel groups and two groups of symmetrically arranged driven sub roadway walking wheel groups, the driving sub roadway walking wheel group includes two driving sub roadway walking wheels, and the two driving sub roadway walking wheels are transmissionally connected; the driven sub roadway walking wheel group includes two driven sub roadway walking wheels;

[0012] The two driving main roadway walking wheels are connected through the first long shaft, the two ends of the first long shaft are arranged on the inner plate surfaces of the two wheel carrier plates through the bearing seats, and the sliding grooves for the upward and downward movement of the bearing seats are formed on the body wall plate;

[0013] The two driving sub roadway walking wheels symmetrically arranged in the two groups of driving sub roadway walking wheel groups are connected through the second long shaft, and the two driving sub roadway walking wheels are transmissionally connected with the two ends of the second long shaft; the second long shaft is transmissionally connected with the first long shaft, and the two ends of the second long shaft are hingedly connected to the inner plate surfaces of the two corresponding body wall plates;

[0014] The first long shaft is connected with the bidirectional walking assembly;

[0015] The shafts of the two driven main roadway walking wheels are arranged in the driven wheel mounting holes formed in the wheel carrier plate and extend into the vertical lifting waist-shaped holes formed in the corresponding wheel mounting holes of the body wall plate;

[0016] The wheel shafts of all the driven sub-lane walking wheels and the remaining two active sub-lane walking wheels are installed in the wheel mounting holes formed in the vehicle body wall plate.

[0017] According to the preferred technical scheme of the present application, a bushing is installed in all the wheel mounting holes, the wheel shaft of the walking wheel is inserted into the bushing, and a retaining ring is installed at the shaft end of the wheel shaft of the walking wheel. The design of the bushing simplifies the assembly steps and makes the replacement convenient. When the walking wheel needs to be replaced, the retaining ring is only needed to be removed to pull out the walking wheel.

[0018] According to the preferred technical scheme of the present application, the transmission assembly between the output of the driving source and the rod transmission component is a chain transmission; the rod transmission component is connected by a universal joint, and the universal joint rod is supported on the bottom plate of the vehicle body by two roller bearing seats. The universal joint connection is used to eliminate the coaxiality error of the axis caused by deformation and manufacturing and assembly errors.

[0019] According to the preferred technical scheme of the present application, two limiting tracks are arranged on the inner plate surface of the vehicle body wall plate which is attached with the sliding plate, the sliding plate is clamped between the two limiting tracks, a wear-resistant plate is fixed on the sliding surface of the two limiting tracks, and a baffle for preventing the sliding plate from slipping is fixed on the outer side surface of the two limiting tracks which is perpendicular to the sliding surface.

[0020] Compared with the prior art, the present application has the following beneficial effects:

[0021] The four-way vehicle of the present application has a simple overall structure and is convenient to maintain. The lifting component not only completes the switching of the walking direction of the main lane and the sub-lane, but also completes the storage and retrieval action. The number of components is reduced, and the overall size is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Fig. 1 is a first perspective view of the four-way vehicle of the present embodiment.

[0023] Figure 2 Fig. 2 is a second perspective view of the four-way vehicle of the present embodiment. Figure 1

[0024] Figure 3 Fig. 5 is an assembly view of the sliding plate, the vehicle body wall plate and the wheel carrier plate in the lifting mechanism.

[0025] Figure 4 Fig. 6 is an assembly view of the wheel carrier plate and the vehicle body wall plate.

[0026] Figure 5 Fig. 7 is an assembly view of the vehicle body wall plate, the wheel carrier plate, the active main-lane walking wheel and the driven main-lane walking wheel. DETAILED DESCRIPTION

[0027] The technical scheme of the present application will be described in detail below, but the protection scope of the present application is not limited to the described embodiments. ​

[0028] To make the content of this invention clearer and easier to understand, the following description is in conjunction with the appendix. Figures 1-5 The specific implementation methods will be further described below.

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention.

[0030] Example:

[0031] like Figure 1 As shown, the four-way vehicle in this embodiment includes a vehicle body 1, a main aisle travel wheel component 2, a sub-aisle travel wheel component 3, a bidirectional travel assembly 4, two wheel frame plates 5, and a lifting component 6 for reversing the travel wheels and lifting and retrieving them.

[0032] like Figure 1 As shown, in this embodiment, the vehicle body 1 is rectangular in shape and is formed by welding four body panels 1-1 around the perimeter and a bottom plate. After surface treatment, the vehicle body 1 is formed. The overall height of the vehicle body 1 is as low as possible. In this embodiment, the preferred height of the vehicle body 1 is 40-50cm.

[0033] like Figure 1 As shown, the main tunnel traveling wheel component 2 and the sub-tunnel traveling wheel component 3 are arranged around the vehicle body 1, while the bidirectional traveling assembly 4 and the lifting component 6 are arranged on the bottom plate of the vehicle body 1 and on the edge of the bottom plate of the vehicle body 1, leaving more installation space for the hardware of the electronic control part.

[0034] like Figure 1 As shown, the main aisle travel wheel component 2 and the sub-aisle travel wheel component 3 are arranged around the vehicle body 1, and travel in the main aisle and sub-aisle under the drive of the bidirectional travel assembly 4; the main aisle travel wheel component 2 and the sub-aisle travel wheel component 3 are connected by transmission; the bidirectional travel assembly 4 is arranged on the bottom plate of the vehicle body 1 and connected to some of the active travel wheels in the main aisle travel wheel component 2, and the main aisle travel wheel component 2 and the sub-aisle travel wheel component 3 work synchronously; two wheel frame plates 5 are symmetrically arranged on the outer surfaces of two body wall panels 1-1 around the vehicle body 1, and there is relative movement between the two wheel frame plates 5 and the vehicle body 1 under the action of the lifting component 6; the main aisle travel wheel component 2 is arranged on the two wheel frame plates 5, and the sub-aisle travel wheel component 3 is arranged on two corresponding body wall panels 1-1 inside the vehicle body 1.

[0035] like Figure 1 and 2 As shown, the lifting component 6 includes a drive source 6-1, two symmetrical lifting sub-units, and a rod transmission component connecting the two lifting sub-units for synchronous operation. The drive source 6-1 is fixed to the bottom plate of the vehicle body 1, and the output of the drive source 6-1 is connected to the rod transmission component through a transmission assembly.Figure 2 As shown, the driving source 6-1 in the embodiment is a servo motor with a reduction gearbox, which is a known technology. The output of the driving source 6-1 is connected to the rod transmission member through chain transmission.

[0036] The two lifting sub-units are symmetrically arranged at the edge positions of the two opposite sides of the floor of the vehicle body 1, and the two lifting sub-units simultaneously drive the two wheel frame plates 5 to perform lifting and falling relative to the vehicle body 1. In the process of lifting and falling, the main roadway walking wheel members 2 installed on the two wheel frame plates 5 are synchronously lifted and fallen.

[0037] Walking and taking goods: when the four-way vehicle is walking on the main roadway, the main roadway walking wheel members 2 fall on the wheel tracks of the main roadway, while the sub-roadway walking wheel members 3 are suspended and do not contact the wheel tracks of the sub-roadway. Note that the main roadway walking wheel members 2 and the sub-roadway walking wheel members 3 are located on two planes, and when the four-way vehicle is walking on the main roadway, the sub-roadway walking wheel members 3 are higher than the main roadway walking wheel members 2.

[0038] When the four-way vehicle needs to enter the sub-roadway to walk and take goods, at this time, the lifting member 6 acts to drive the two wheel frame plates 5 to lift relative to the vehicle body 1 to the walking station of the sub-roadway; at this time, the main roadway walking wheel members 2 are lifted relative to the vehicle body 1 (that is, the sub-roadway walking wheel members 3 are lowered), the sub-roadway walking wheel members 3 fall on the wheel tracks of the sub-roadway, the sub-roadway walking wheel members 3 walk on the wheel tracks of the sub-roadway to reach the taking goods point, at this time, the four-way vehicle needs to be below the goods to be taken (must be lower than the goods to be taken, and the four-way vehicle can enter below the goods to be taken), the lifting member 6 again performs a lifting action to lift the two wheel frame plates 5 to the taking goods station, and in the process of lifting the two wheel frame plates 5, the goods to be taken are lifted.

[0039] Return process:

[0040] After the four-way vehicle takes the goods, it comes out of the sub-roadway (at this time, the two wheel frame plates 5 are at the highest position in the lifted state); when it reaches the main roadway, the lifting member 6 drives the two wheel frame plates 5 to fall, the main roadway walking wheel members 2 fall on the wheel tracks of the main roadway, at this time, the sub-roadway walking wheel members 3 are suspended above the wheel tracks of the sub-roadway, the main roadway is walked, and one taking of goods is completed.

[0041] As shown in Figure 1 and 2 , the two lifting sub-units each include a lead screw lifter 6-2, a sliding plate 6-3, and at least two rollers 6-4.

[0042] As shown in Figure 1As shown, two lifting sub-units are symmetrically distributed on the edges of the bottom plate of the vehicle body 1. The screw rod elevator 6-2 is horizontally arranged on the bottom plate of the vehicle body 1, which is a commercially available part in this embodiment. The input end of the screw rod elevator 6-2 is connected with the rod transmission component. In this embodiment, the rod transmission component 6-5 is preferably connected with a universal joint, and the universal joint rod is supported on the bottom plate of the vehicle body 1 through two roller bearing seats.

[0043] As shown in the figure, Figure 1 The screw rod nut 6-2-1 in the screw rod elevator 6-2 is fixed on the sliding plate 6-3; the sliding plate 6-3 is installed on the inner panel surface of the vehicle body wall panel 1-1. In this embodiment, the connection between the screw rod nut 6-2-1 and the sliding plate 6-3 adopts a "T"-shaped connecting plate, which is fixed with the screw rod nut 6-2-1 and the sliding plate 6-3 through bolts.

[0044] As shown in the figure, Figure 3 In this embodiment, the preferred number of rollers 6-4 is three, and three cam grooves 6-3-1 are formed on the sliding plate 6-3. The three cam grooves 6-3-1 on the sliding plate 6-3 are arranged at intervals from both ends to the middle of the sliding plate 6-3. The rollers 6-4 at both ends of the two rollers 6-4 are stressed, and the roller 6-4 in the middle of the three rollers 6-4 plays a role in preventing over-positioning; at the same time, it also prevents the rollers 6-4 at both ends from failing, causing the four-way vehicle to fall. After the rollers 6-4 at both ends fail, the roller 6-4 in the middle starts to work.

[0045] As shown in the figure, Figure 3 The vertical waist-shaped groove on the vehicle body wall panel 1-1 is provided with a vertical waist-shaped groove corresponding to the cam groove 6-3-1, which plays a guiding role in the lifting and falling of the wheel carrier plate 5.

[0046] As shown in the figure, Figure 4 The wheel carrier plate 5 is provided with roller mounting holes 5-1 corresponding to the rollers 6-4, and the rollers 6-4 are installed in the roller mounting holes 5-1 and extend into the cam grooves 6-3-1 through the waist-shaped grooves on the vehicle body wall panel 1-1.

[0047] As shown in the figure, Figure 4 The roller mounting holes 5-1 on the wheel carrier plate 5 are arranged at intervals from both ends to the middle of the wheel carrier plate 5, and the center points of all the roller mounting holes 5-1 are located on a horizontal line; shaft sleeves 11 are installed in all the roller mounting holes 5-1 on the wheel carrier plate 5, and the outer wall of the shaft sleeve 11 is welded with the wheel carrier plate 5; the rollers 6-4 are installed in the shaft sleeves 11, and the both ends of the rollers 6-4 are provided with retaining rings. The design of the shaft sleeves 11 in the roller mounting holes simplifies the assembly steps and makes maintenance and replacement convenient. During installation, the rollers 6-4 are only needed to be installed in the shaft sleeves 11 and the retaining rings are installed; during maintenance and disassembly, the retaining rings are removed and the rollers 6-4 are pulled out, and then new rollers can be directly replaced.

[0048] As shown in Figure 5 the two ends of the wheel carrier plate 5 are pressed against the body wall plate 1-1 by the pressing block 7 with a cross-section in the shape of "L", the outer wheel carrier insert 8 is arranged between the inner plate surface of the two ends of the wheel carrier plate 5 and the outer plate surface of the body wall plate 1-1, the middle wheel carrier insert 9 is arranged between the inner plate surface at the middle position of the wheel carrier plate 5 and the outer plate surface of the body wall plate 1-1, and the wheel carrier plate insert 10 is arranged on the outer plate surface at the middle position of the wheel carrier plate 5; the outer wheel carrier insert 8, the middle wheel carrier insert 9 and the wheel carrier plate insert 10 are fixed with the body wall plate 1-1; the design of the outer wheel carrier insert, the middle wheel carrier insert and the wheel carrier plate insert reduces the frictional contact area between the wheel carrier plate and the body wall plate.

[0049] As shown in Figure 4 the wheel carrier plate insert 10 is fixed on the body wall plate 1-1 by bolts, vertical waist-shaped grooves are opened on the wheel carrier plate 5 at the positions corresponding to the fixing bolts of the wheel carrier plate insert 10, four fixing bolts of the wheel carrier plate insert 10 and the body wall plate 1-1 are arranged, and the wheel carrier plate insert 10 is fixed as firmly as possible; at the same time, the size of the wheel carrier plate insert 10 can be as large as possible, and the parts required for electric control can be fixed on the outer surface of the wheel carrier plate insert 10. The wheel carrier plate insert 10 is a steel piece, which further improves the strength of the wheel carrier plate 5.

[0050] The design of the main roadway running wheel component 2 and the sub-roadway running wheel component 3 in the embodiment is known in the technical field.

[0051] In the known patent ZL 201610034155.6, the invention name is "multi-wheel four-way vehicle", and the disclosure is in the patent document.

[0052] As shown in Figure 1 and 2 in the embodiment, the main roadway running wheel component 2 in the four-way vehicle includes two driving main roadway running wheels 2-1 and two driven main roadway running wheels 2-2; the sub-roadway running wheel component 3 includes two groups of symmetrically arranged driving sub-roadway running wheel groups and two groups of symmetrically arranged driven sub-roadway running wheel groups, each driving sub-roadway running wheel group includes two driving sub-roadway running wheels 3-1, and the two driving sub-roadway running wheels 3-1 are transmissionally connected; each driven sub-roadway running wheel group includes two driven sub-roadway running wheels 3-2.

[0053] In the embodiment, the two driving sub-roadway running wheels 3-1 are transmissionally connected through sprocket wheels, and the purpose is to pass through the gap in the roadway.

[0054] As shown in Figure 2 the two driving main roadway running wheels 2-1 are connected through the first long shaft 12, the two ends of the first long shaft 12 are arranged on the inner plate surfaces of the two wheel carrier plates 5 through bearing seats 13, and the sliding grooves 1-1-2 for the up-down movement of the bearing seats 13 are opened on the body wall plate 1-1.Figure 3 As shown in the figure.

[0055] As shown in the figure. Figure 2 As shown in the figure, two active sub-lane walking wheels 3-1 arranged symmetrically in the two groups of active sub-lane walking wheels are connected by the second long shaft 17, and the two active sub-lane walking wheels 3-1 are respectively in transmission connection with the two ends of the second long shaft 17. Figure 1 As shown in the figure, the active sub-lane walking wheel 3-1 is in gear transmission with the second long shaft 17.

[0056] As shown in the figure. Figure 1 As shown in the figure. 2 As shown in the figure, the second long shaft 17 is in transmission connection with the first long shaft 12, and the two ends of the second long shaft 17 are hinged on the inner plate surface of the corresponding vehicle body wall panel 1-1. In this embodiment, the second long shaft 17 and the first long shaft 12 are in chain transmission. The first long shaft 12 is connected with the bidirectional walking assembly 4, and the power is transmitted to the second long shaft 17 through chain transmission. In this embodiment, one power source in the bidirectional walking assembly 4 simultaneously drives the walking wheels in the main lane walking wheel component 2 and the sub-lane walking wheel component 3.

[0057] As shown in the figure. Figure 3 As shown in the figure, the wheel shafts of the two driven main lane walking wheels 2-2 are installed in the driven wheel mounting holes 5-2 opened in the wheel carrier plate 5 and extend into the vertical lifting waist-shaped holes 1-1-1 opened in the vehicle body wall panel 1-1 corresponding to the wheel mounting holes 5-2. The wheel shafts of all the driven sub-lane walking wheels 3-2 and the remaining two active sub-lane walking wheels 3-1 are installed in the wheel mounting holes 5-2 opened in the vehicle body wall panel 1-1. Figure 1 As shown in the figure. 2

[0058] As shown in the figure. Figure 4 As shown in the figure, in this embodiment, a main lane standby walking wheel can be arranged on the wheel carrier plate 5; a standby walking wheel 5-3 is opened in the wheel carrier plate 5. The vehicle body wall panel 1-1 on which the sub-lane walking wheel component 3 is installed is also provided with a sub-lane standby walking wheel, and the vehicle body wall panel 1-1 is also provided with a standby walking wheel 5-3.

[0059] As shown in the figure. Figure 5 As shown in the figure, in this embodiment, a shaft sleeve 11 is installed in all the wheel mounting holes 5-2 and the standby walking wheels 5-3, the wheel shaft of the walking wheel is inserted into the shaft sleeve 11, and a retaining ring is installed at the shaft end of the wheel shaft of the walking wheel.

[0060] As shown in the figure. Figure 3 ​As shown, two limiting tracks 14 are arranged on the inner plate surface of the body wall panel 1-1 mounted in close contact with the sliding plate 6-3, the sliding plate 6-3 is clamped between the two limiting tracks 14, and a wear-resistant plate 15 is fixed on the sliding surface of the two limiting tracks 14. The two limiting tracks 14 provide a guiding effect for the movement of the sliding plate 6-3; the arrangement of the wear-resistant plate 15 solves the direct metal friction between the sliding plate 6-3 and the limiting track 14.

[0061] As shown in the figure, Figure 1 As shown, a baffle 16 for sliding off the sliding plate 6-3 is fixed on the outer side surface of the two limiting tracks 14 perpendicular to the sliding surface.

[0062] As shown in the figure, Figure 1 As shown in the figure, the bidirectional walking assembly 4 in the embodiment is known technology. The known patent, ZL202020873736.0, invention name: bidirectional walking power assembly with chain compression mechanism, has been fully disclosed. Details as follows: the known patent, ZL202020873736.0, bidirectional walking power assembly with chain compression mechanism disclosed therein, includes bidirectional output gear box and chain compression mechanism, the bidirectional output gear box includes power source, power output shaft, assembled gear box, sub-lane driving sprocket, driving helical bevel gear, variable direction helical bevel gear and main-lane driving sprocket. The chain compression mechanism includes a compression sprocket cooperating with the chain, a rotating arm, a rotating arm support and a push-pull swing arm. The bidirectional output gear box is compact in overall size, meeting the installation requirements of the small space inside the four-way vehicle body in the embodiment; at the same time, the chain compression mechanism is compact in overall structure, simple in structure and high in reliability, the main-lane driving sprocket is raised or lowered under the drive of the lifting mechanism, and the rotating arm swings around the middle hinge point, so that the left end and the right end of the rotating arm are alternately raised or lowered; when the main-lane driving sprocket is raised, the rotating arm right end is lowered to press the chain down and tighten the chain.

[0063] As shown in the figure, Figure 1 and 2 As shown in the figure, ZL202020873736.0, invention name: bidirectional walking power assembly with chain compression mechanism, the base plate 30 disclosed therein is directly installed on the bottom plate of the vehicle body 1, and the base plate 30 can also be removed and the bottom plate of the vehicle body 1 can be directly used instead of the base plate 30 in the bidirectional walking power assembly with chain compression mechanism.

[0064] As shown in the figure, Figure 1 and 2 As shown in the figure, ZL202020873736.0, invention name: bidirectional walking power assembly with chain compression mechanism, the main-lane driving sprocket power input shaft 27 disclosed therein is the first long shaft 12 in the embodiment connecting the two driving main-lane driving sprockets 2-1.

[0065] Therefore, the adopted bidirectional walking assembly 4 in the embodiment, the structure of which is not disclosed, refers to the published patent ZL202020873736.0, with the title of Bidirectional Walking Power Assembly with Chain Compression Mechanism.

[0066] The working process of the four-way vehicle in the embodiment is as follows:

[0067] 1. Walking and taking goods process: the four-way vehicle walks in the main roadway;

[0068] The four-way vehicle is placed on the track of the main roadway, and the bidirectional walking assembly 4 is started to work; the main roadway walking wheel component 2 falls on the wheel track of the main roadway, while the sub-roadway walking wheel component 3 is suspended and does not contact the wheel track of the sub-roadway.

[0069] When moving to the sub-roadway to be entered, the bidirectional walking assembly 4 is paused; at this time, the lifting component 6 acts to drive the two wheel carrier plates 5 to be lifted relative to the vehicle body 1 to the walking working position of the sub-roadway, specifically: the output of the driving source 6-1 is transmitted to the universal joint rod through chain transmission, to the two screw rod elevators 6-2, the output screw rod of the screw rod elevator 6-2 rotates to drive the screw nut 6-2-1 to move, the sliding plate 6-3 moves linearly, and the rollers 6-4 in the sliding plate 6-3 are pushed to lift the wheel carrier plate 5 relative to the vehicle body 1 under the action of the cam groove 6-3-1 on the sliding plate 6-3 and the vertical waist-shaped groove on the vehicle body wall plate 1-1. At this time, the main roadway walking wheel component 2 rises, and the sub-roadway walking wheel component 3 falls onto the wheel track of the sub-roadway.

[0070] The bidirectional walking assembly 4 is restarted to work, and the four-way vehicle walks in the sub-roadway;

[0071] When the four-way vehicle reaches the taking position, the bidirectional walking assembly 4 is paused; at this time, the lifting component 6 is started to work to perform lifting action to lift the two wheel carrier plates 5 to the taking working position, and the goods to be taken are lifted during the lifting of the two wheel carrier plates 5;

[0072] 2. Returning process:

[0073] After the four-way vehicle takes the goods, it comes out of the sub-roadway (at this time, the two wheel carrier plates 5 are in the highest position in the lifted state); when it reaches the main roadway, the lifting component 6 drives the two wheel carrier plates 5 to fall, and the main roadway walking wheel component 2 falls on the wheel track of the main roadway; at this time, the sub-roadway walking wheel component 3 is suspended above the wheel track of the sub-roadway, and the main roadway walks, completing a taking of goods.

[0074] In the embodiment, the four-way vehicle has a simple overall structure and is convenient to maintain; the lifting component not only completes the switching of the walking directions of the main roadway and the sub-roadway, but also completes the storing and taking actions; the number of components is reduced, and the overall size is reduced.

[0075] While the application has been described and illustrated with reference to specific preferred embodiments, it is not intended that it be limited to these particulars. Various changes in form and detail can be made without departing from the spirit and scope of the application as defined by the appended claims.

Claims

1. A four-way vehicle, comprising a vehicle body (1), a main lane travel wheel assembly (2), a sub-lane travel wheel assembly (3), and a bidirectional travel assembly (4), wherein the main lane travel wheel assembly (2) and the sub-lane travel wheel assembly (3) are arranged around the vehicle body (1) and travel in the main lane and the sub-lane under the drive of the bidirectional travel assembly (4); the main lane travel wheel assembly (2) and the sub-lane travel wheel assembly (3) are connected by transmission; the bidirectional travel assembly (4) is arranged on the bottom plate of the vehicle body (1) and connected to some of the active travel wheels in the main lane travel wheel assembly (2), wherein the main lane travel wheel assembly (2) and the sub-lane travel wheel assembly (3) work synchronously; Its features are, It also includes two wheel frame plates (5) for installing the main aisle traveling wheel components (2) and a lifting component (6) for reversing the traveling wheels and lifting and storing. The two wheel frame plates (5) are symmetrically arranged on the outer surfaces of the two body panels (1-1) around the body (1), and there is relative movement between the two wheel frame plates (5) and the body (1) under the action of the lifting component (6). The main aisle traveling wheel components (2) are arranged on the two wheel frame plates (5), and the sub-aisle traveling wheel components (3) are arranged on the two corresponding body panels (1-1) inside the body (1). The lifting component (6) includes a drive source (6-1), two symmetrical lifting sub-units, and a rod transmission component that connects the two lifting sub-units to work synchronously. The drive source (6-1) is fixed inside the vehicle body (1), and the output of the drive source (6-1) is connected to the rod transmission component through a transmission assembly. Both lifting subunits include a screw jack (6-2), a slide plate (6-3), and at least two rollers (6-4). The screw jack (6-2) is horizontally arranged on the bottom plate of the vehicle body (1). The input end of the screw jack (6-2) is connected to the rod transmission component. The screw nut (6-2-1) inside the screw jack (6-2) is fixed on the slide plate (6-3). The slide plate (6-3) is installed against the inner panel of the vehicle body panel (1-1). The slide plate (6-3) has the same number of cam grooves (6-3-1) as the rollers (6-4). The vehicle body panel (1-1) has vertical waist-shaped grooves corresponding to the cam grooves (6-3-1). The wheel frame plate (5) has corresponding roller mounting holes (5-1). The rollers (6-4) are installed into the roller mounting holes (5-1) and extend through the waist-shaped grooves on the vehicle body panel (1-1) into the cam grooves (6-3-1). The two ends of the wheel frame plate (5) are pressed onto the body wall panel (1-1) by pressure blocks (7) with an "L" shaped cross section. Outer wheel frame inserts (8) are provided between the inner plate surfaces at both ends of the wheel frame plate (5) and the outer plate surfaces of the body wall panel (1-1). A middle wheel frame insert (9) is provided between the inner plate surface at the middle position of the wheel frame plate (5) and the outer plate surface of the body wall panel (1-1). A wheel frame plate insert (10) is provided on the outer plate surface at the middle position of the wheel frame plate (5). The outer wheel frame insert (8), the middle wheel frame insert (9) and the wheel frame plate insert (10) are all fixed to the body wall panel (1-1). Roller mounting holes (5-1) on the wheel frame plate (5) are distributed at intervals from both ends of the wheel frame plate (5) toward the middle, and the center point of all the roller mounting holes (5-1) is located on a horizontal line; bushings (11) are installed in all the roller mounting holes (5-1) on the wheel frame plate (5), the outer wall of the bushing (11) is welded to the wheel frame plate (5), the roller (6-4) is installed in the bushing (11), and retaining rings are provided at both ends of the roller (6-4); The main roadway spare traveling wheel is provided on the wheel frame plate (5); the spare traveling wheel hole (5-3) opened on the wheel frame plate (5) is also provided on the vehicle body wall panel (1-1) where the sub-roadway traveling wheel component (3) is installed, and the spare traveling wheel hole (5-3) is also opened on the vehicle body wall panel (1-1). When the four-way vehicle needs to enter the sub-lane to travel and pick up goods, the lifting component (6) is activated, driving the two wheel frame plates (5) to lift relative to the vehicle body (1) to the travel position of the sub-lane; at this time, the main lane travel wheel component (2) is lifted relative to the vehicle body (1), and the sub-lane travel wheel component (3) falls on the wheel track of the sub-lane. The sub-lane travel wheel component (3) travels on the wheel track of the sub-lane and reaches the picking point. At this time, the four-way vehicle needs to be below the goods to be picked up. The lifting component (6) performs the lifting action again, lifting the two wheel frame plates (5) to the picking position. During the lifting process of the two wheel frame plates (5), the goods to be picked up are lifted.

2. The four-way vehicle according to claim 1, characterized in that, The main roadway traveling wheel component (2) includes two active main roadway traveling wheels (2-1) and two driven main roadway traveling wheels (2-2). The sub-tunnel traveling wheel component (3) includes two sets of symmetrically arranged active sub-tunnel traveling wheel sets and two sets of symmetrically arranged driven sub-tunnel traveling wheel sets. The active sub-tunnel traveling wheel set includes two active sub-tunnel traveling wheels (3-1), which are connected by transmission. The driven sub-tunnel traveling wheel set includes two driven sub-tunnel traveling wheels (3-2). Two active main roadway traveling wheels (2-1) are connected by a first long shaft (12). Both ends of the first long shaft (12) are set on the inner plate surface of the two wheel frame plates (5) through bearing seats (13). A sliding groove (1-1-2) for the bearing seats (13) to move up and down is opened on the vehicle body wall panel (1-1). Two active sub-lane traveling wheels (3-1) symmetrically arranged in the two sets of active sub-lane traveling wheels are connected by a second long shaft (17), and the two active sub-lane traveling wheels (3-1) are respectively connected to the two ends of the second long shaft (17); the second long shaft (17) is connected to the first long shaft (12), and the two ends of the second long shaft (17) are hinged to the inner panel surface of the corresponding body wall panels (1-1); The first long shaft (12) is connected to the bidirectional travel assembly (4); The axles of the two driven main roadway traveling wheels (2-2) are installed into the driven wheel mounting holes (5-2) opened in the wheel frame plate (5) and extend into the vertical lifting waist-shaped holes (1-1-1) opened on the body wall panel (1-1) corresponding to the wheel mounting holes (5-2); All the axles of the driven sub-roadway traveling wheels (3-2) and the remaining two driving sub-roadway traveling wheels (3-1) are installed in the wheel mounting holes (5-2) opened on the vehicle body panel (1-1).

3. The four-way vehicle according to claim 2, characterized in that, A bushing (11) is installed in all wheel mounting holes (5-2), the axle of the traveling wheel is inserted into the bushing (11), and a retaining ring is installed at the axle end of the traveling wheel.

4. The four-way vehicle according to claim 1, characterized in that, The transmission assembly between the output of the drive source (6-1) and the rod drive component is a chain drive; the rod drive component is connected by a universal joint, and the universal joint rod is supported on the bottom plate of the vehicle body (1) through two roller bearing seats.

5. The four-way vehicle according to claim 1, characterized in that, Two limiting rails (14) are provided on the inner panel of the vehicle body wall panel (1-1) that is fitted to the sliding plate (6-3). The sliding plate (6-3) is sandwiched between the two limiting rails (14). A layer of wear-resistant plate (15) is fixed on the sliding surface of each of the two limiting rails (14), and a baffle (16) is fixed on the outer surface of each of the two limiting rails (14) that is perpendicular to the sliding surface to prevent the sliding plate (6-3) from slipping off.

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