Unmanned logistics vehicle

Abstract

The invention relates to the technical field of unmanned logistics transportation devices, in particular to an unmanned logistics vehicle which comprises a chassis frame, a front wheel assembly, a rear wheel assembly, a forecabin assembly, an external electric appliance installation position mechanism, a bottom plate assembly and a forecabin shell. The chassis frame is of a two-longitudinal and four-transverse structure and is divided into five functional areas. The front wheel assembly is fixedly connected with a front wheel supporting shaft through a front wheel supporting shaft fixing base and provided with a hydraulic shock absorber and a steering structure. The rear wheel assembly is fixedly connected with a rear wheel rotating shaft sleeve, an integrated motor and a speed reducer through a rear wheel rotating shaft sleeve fixing seat; the front cabin assembly is provided with an integrally-formed shell and is connected with a front wheel baffle and an anti-collision strip. An external electric appliance mounting position is convenient to overhaul, and the bottom plate assembly is adaptive to heavy load. The system is optimized in layout and efficient in integration, has stability, safety and maintenance convenience, and can meet the requirement for high-frequency heavy-load transportation under complex road conditions.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned logistics transportation devices, and particularly relates to an unmanned logistics vehicle. BACKGROUND

[0002] In the heavy-load material automated transfer scene of industrial storage, factory transfer, etc., the unmanned logistics vehicle needs to meet the key requirements of high-strength bearing, stable driving, multi-core component integration and high-frequency maintenance, etc. However, the overall structural design of the existing similar products has obvious shortcomings: the core problem is that the chassis frame lacks scientific and reasonable function zoning planning, and the boundaries of key function areas such as front wheel support, power drive, battery installation and electrical integration are fuzzy, which not only leads to low space utilization, but also easily causes mutual interference of each component during operation; at the same time, the integration design of each functional component and the chassis frame is insufficient, and most of them are simply spliced and assembled as independent modules, so that the overall rigidity of the vehicle is weak, and resonance is easily generated during heavy-load working conditions or complex road driving, which seriously affects the operation stability and structural reliability; in addition, the electrical components generally adopt the built-in installation mode, and the operation space of the key connection structures such as the bottom plate and the suspension is narrow, which leads to poor maintenance convenience, and it is difficult to adapt to the maintenance requirements of high-frequency operation, and combined with the insufficient adaptability of the bearing structure, the heavy-load transportation capacity and long-term operation efficiency of the unmanned logistics vehicle are restricted.

[0003] Therefore, there is an urgent need for an unmanned logistics vehicle solution that realizes scientific layout, efficient integration, stability and reliability and convenient maintenance through overall structural optimization. SUMMARY

[0004] The present application relates to the technical field of unmanned logistics transportation devices, and particularly relates to an unmanned logistics vehicle.

[0005] The above-mentioned purpose is achieved by the following technical solutions: An unmanned logistics vehicle includes a chassis frame, a front wheel assembly, a rear wheel assembly, a front compartment assembly, an external electrical appliance mounting mechanism, a floor assembly, and a front compartment shell. The chassis frame includes longitudinal beams symmetrically arranged on both sides, and a front crossbeam, a first intermediate crossbeam, a second intermediate crossbeam, and a rear crossbeam arranged parallel to each other between two of the longitudinal beams. The front crossbeam and the two longitudinal beams corresponding to the first intermediate crossbeam form a U-shaped front wheel support portion. The first intermediate crossbeam and the second intermediate crossbeam form a battery pack support portion. The second intermediate crossbeam and the rear crossbeam form a rear wheel support portion. The front wheel assembly is installed below the front wheel support portion, and the rear wheel assembly is installed below the rear wheel support portion. The battery pack support portion is used to install the battery pack. The external electrical appliance mounting mechanism is provided on the outer sides of the two longitudinal beams corresponding to the first intermediate crossbeam and the second intermediate crossbeam. The floor assembly is provided on the surface of the chassis frame, and the front compartment shell covers the outside of the front compartment assembly.

[0006] Preferably, a front wheel assembly support beam is provided between the front crossbeam and the first intermediate crossbeam. The front wheel assembly support beam is made of high-strength I-beam steel, and its two ends are fixed to the inner walls of the two longitudinal beams by processes such as full welding. The front wheel assembly support beam and the upper surface of the front crossbeam together form a front cabin support part adapted to the front cabin assembly. The front cabin support part is fastened to the front cabin frame of the front cabin assembly by bolts.

[0007] Preferably, a rear wheel assembly support beam is provided between the second intermediate crossbeam and the tail end crossbeam. The rear wheel assembly support beam is made of high-strength channel steel, and both ends are fixed to the inner walls of the two longitudinal beams through processes such as double-sided full welding. The lower surface of the rear wheel assembly support beam is symmetrically provided with a rear wheel shock absorber upper bracket, and is detachably connected to the rear wheel axle sleeve fixing seat of the rear wheel assembly through a positioning pin.

[0008] Preferably, the outline dimensions of the battery pack support are adapted to the standard logistics vehicle battery pack, and a plurality of battery pack mounting holes are pre-set on the upper surfaces of the first intermediate crossbeam and the second intermediate crossbeam, which are fastened to the bottom mounting base of the battery pack by T-bolts.

[0009] Preferably, the front wheel assembly includes a front wheel elastic support member composed of several stacked front leaf springs. Both ends of the front wheel elastic support member are hinged to the front spring front bracket and the front spring rear bracket corresponding to the front wheel support portion. A front wheel support shaft fixing seat is provided in the middle section of the front wheel elastic support member, and the front wheel support shaft fixing seat is fixedly connected to the front wheel support shaft. Both ends of the front wheel support shaft are detachably connected to the front wheel arm, and the end of the front wheel arm away from the front wheel support shaft is hinged to the front wheel module. An electric steering assembly support is provided on the outer wall of the front wheel support shaft, and the electric steering assembly support is fastened to the electric steering assembly. The front wheel steering rods at both ends of the electric steering assembly are connected to the front wheel module. A front wheel shock absorber bracket is welded to the outer side of the longitudinal beam, and the front wheel shock absorber bracket is hinged to one end of the front wheel hydraulic shock absorber, while the other end of the front wheel hydraulic shock absorber is hinged to the front wheel support shaft fixing seat.

[0010] Preferably, the rear wheel assembly includes a rear wheel elastic support member composed of several stacked rear leaf springs. Both ends of the rear wheel elastic support member are hinged to the front and rear spring brackets corresponding to the rear wheel support portion. A rear wheel axle sleeve fixing seat is provided in the rear wheel elastic support member, and the rear wheel axle sleeve fixing seat is fixedly connected to the rear wheel axle sleeve. The rear wheel axle sleeve is movably connected to the rear wheel axle, and both ends of the rear wheel axle are fixedly connected to the rear wheel module. A rear wheel motor bracket is welded to the outer wall of the rear wheel axle sleeve, and the rear wheel motor bracket is fixed to the rear wheel motor. The output shaft of the rear wheel motor is connected to the input end of the rear wheel reducer, and the output end of the rear wheel reducer is drively connected to the rear wheel axle. The upper rear wheel shock absorber bracket is hinged to one end of the rear wheel hydraulic shock absorber, and the other end of the rear wheel hydraulic shock absorber is hinged to the lower rear wheel shock absorber bracket on the outer wall of the rear wheel axle sleeve.

[0011] Preferably, a front wheel longitudinal limiting seat is welded to the position of the front wheel support axle corresponding to the position of the longitudinal beam, and the bottom surface of the longitudinal beam is fixed with a front wheel longitudinal limiting post corresponding to the upper and lower positions of the front wheel longitudinal limiting seat; a rear wheel longitudinal limiting seat is welded to the position of the rear wheel axle sleeve corresponding to the position of the longitudinal beam, and the bottom surface of the longitudinal beam is fixed with a rear wheel longitudinal limiting post corresponding to the upper and lower positions of the rear wheel longitudinal limiting seat; buffer pads are attached to the contact surfaces of both the front wheel longitudinal limiting seat and the rear wheel longitudinal limiting seat.

[0012] Preferably, the front cabin assembly includes a front cabin frame and a front cabin side frame. The front cabin frame is welded from aluminum alloy square tubing and is fixedly connected to the front cabin support by angle iron. The front cabin side frame is symmetrically welded to both sides below the front cabin frame, and a front wheel chock mounting seat is welded to the outer wall of the front cabin side frame. The front cabin shell is integrally injection molded from ABS engineering plastic, and its inner wall is provided with several buckles that are snapped together with the front cabin frame and the front cabin side frame. The front wheel baffle is made of wear-resistant rubber and is fixed to the front wheel baffle mounting seat by bolts, and is fitted and sealed to the side of the front housing. The arc-shaped anti-collision strip is made of elastic polyurethane and is fixed to the front end face of the front cabin shell by a bracket.

[0013] Preferably, the external electrical appliance mounting mechanism includes electrical appliance brackets symmetrically welded to the outside of the longitudinal beam. The electrical appliance brackets are formed by bending cold-rolled steel plates and have several independent electrical appliance mounting positions. A side skirt assembly is provided on the outside of the electrical appliance brackets. The side skirt assembly includes a front side skirt and a rear side skirt fixed to the electrical appliance brackets by bolts, and a movable middle side skirt that is detachably connected or hinged to the electrical appliance brackets. An electrical appliance bracket base plate is welded to the bottom of the electrical appliance brackets.

[0014] Preferably, the base plate assembly includes a base plate frame and a base plate. The base plate frame is welded from high-strength square tubing, and a base plate support longitudinal beam adapted to the longitudinal beam is welded to its bottom surface. The inner wall of the base plate support longitudinal beam fits against the outer wall of the longitudinal beam and is longitudinally fastened to the longitudinal beam by bolts. A shock-absorbing buffer is provided between the base plate support longitudinal beam and the longitudinal beam. A base plate diagonal brace is welded to the outer side of the base plate support longitudinal beam. The upper end of the base plate diagonal brace is connected to the base plate support longitudinal beam of the base plate frame, and the lower end of the base plate diagonal brace is connected to the longitudinal beam. The base plate is made of anti-slip patterned steel plate and is fixed to the base plate frame by rivets.

[0015] The unmanned logistics vehicle provided by this invention achieves efficient space utilization through a scientifically partitioned two-vertical-four-horizontal chassis frame, stable heavy-duty load bearing through integrated components and chassis, convenient maintenance through external electrical mounting positions and detachable connections, smooth driving through a dual shock absorption system, and reliable operation through a precise steering structure and robust connections. Compared with existing technologies, the specific advantages are as follows: 1. Optimized layout and efficient space utilization: The "two vertical and four horizontal" chassis frame divides the five functional areas, and each component is precisely adapted and installed without interference or conflict, greatly improving space utilization. 2. High integration and high power efficiency: The integrated design of front wheel steering, rear wheel power, front compartment control, electrical integration and floor load-bearing shortens the power transmission path, enhances overall rigidity, and is suitable for heavy-duty transportation; 3. Significantly improved stability and ride comfort: Both the front and rear suspensions adopt a dual damping system of "leaf springs + hydraulic shock absorbers", which effectively reduces road bumps and provides high steering precision; 4. Significantly improved ease of maintenance: External electrical components are quickly inspected and repaired via a movable side skirt in the middle section. All components are detachable, significantly improving assembly and maintenance efficiency. 5. Comprehensive upgrade in safety protection: The front cabin shell, front wheel arches, curved anti-collision strips, side skirt components and rear skirt form a full-dimensional protection system, and both the front and rear suspensions are equipped with failure limit mechanisms to reduce the risk of hard collisions; 6. High adaptability and reliability: All components are securely connected, the battery pack support is compatible with standard battery packs, and the electrical mounting position is compatible with electrical components of different specifications, resulting in high adaptability. Attached Figure Description

[0016] Figure 1 This is a first-view structural diagram of an unmanned logistics vehicle according to the present invention; Figure 2 This is a second-view structural diagram of an unmanned logistics vehicle according to the present invention; Figure 3 This is a schematic diagram of the assembly of the front cabin shell and front cabin components in an unmanned logistics vehicle according to the present invention; Figure 4 This is a schematic diagram of the assembly of the front compartment component and the chassis frame in an unmanned logistics vehicle according to the present invention; Figure 5 This is a schematic diagram of the chassis frame structure of an unmanned logistics vehicle according to the present invention; Figure 6 This is a top view of the front wheel assembly, rear wheel assembly, and chassis frame of the unmanned logistics vehicle described in this invention. Figure 7 This is a bottom view of the front wheel assembly, rear wheel assembly, and chassis frame of the unmanned logistics vehicle described in this invention. Figure 8 This is a side view of the front wheel assembly, rear wheel assembly, and chassis frame of the unmanned logistics vehicle described in this invention. Figure 9 This is a perspective view of the front wheel assembly, rear wheel assembly and chassis frame of the unmanned logistics vehicle described in this invention. Figure 10 This is a first-view structural diagram of an external electrical appliance mounting mechanism in an unmanned logistics vehicle according to the present invention. Figure 11 This is a second-view structural schematic diagram of an external electrical appliance mounting mechanism in an unmanned logistics vehicle according to the present invention; Figure 12 This is a schematic diagram of the floor plate assembly and chassis frame of the unmanned logistics vehicle described in this invention after assembly; Figure 13 This is a schematic diagram of the underbody assembly and chassis frame of the unmanned logistics vehicle described in this invention.

[0017] Illustration markings: 1-Chassis frame, 101-Longitudinal beam, 102-Front end crossbeam, 103-First intermediate crossbeam, 104-Second intermediate crossbeam, 105-Rear end crossbeam, 106-Front wheel support, 107-Battery pack support, 108-Rear wheel support, 109-Front wheel assembly support crossbeam, 110-Front compartment support, 111-Rear wheel assembly support crossbeam; 2-Front wheel assembly, 201-Front leaf spring, 202-Front wheel elastic support, 203-Front spring front bracket, 204-Front spring rear bracket, 205-Front wheel support shaft, 206-Front wheel control arm, 207-Front wheel module, 208-Electric steering assembly, 209-Front wheel steering rod, 210-Front wheel longitudinal limit seat, 211-Front wheel longitudinal limit post, 212-Front wheel shock absorber bracket, 213-Front wheel hydraulic shock absorber, 214-Front wheel support shaft mounting base; 3-Rear wheel assembly, 301-Rear leaf spring, 302-Rear wheel elastic support, 303-Rear spring front bracket, 304-Rear spring rear bracket, 305-Rear wheel axle sleeve, 306-Rear wheel axle, 307-Rear wheel module, 308-Rear wheel motor bracket, 309-Rear wheel motor, 310-Rear wheel reducer, 311-Rear wheel longitudinal limit seat, 312-Rear wheel longitudinal limit post, 313-Rear wheel axle sleeve fixing seat, 314-Rear wheel shock absorber upper bracket, 315-Rear wheel shock absorber lower bracket, 316-Rear wheel hydraulic shock absorber; 4-Front compartment assembly, 401-Front compartment frame, 402-Front compartment side frame, 405-Front wheel baffle, 403-Arc-shaped anti-collision strip, 404-Front wheel baffle mounting bracket; 5-External electrical appliance mounting mechanism, 501-Electrical appliance bracket, 502-Electrical appliance mounting position, 503-Side skirt assembly, 504-Front end side skirt, 505-Middle section movable side skirt, 506-Rear end side skirt, 507-Electrical appliance bracket base plate, 509-Tail skirt bracket, 510-Tail skirt; 6-Base plate assembly, 601-Base plate frame, 602-Base plate, 603-Base plate support longitudinal beam, 604-Base plate diagonal bracing plate, 605-Base plate transverse beam; 7-Foreboard hull. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1 and Figure 2As shown, this solution provides an unmanned logistics vehicle, including a chassis frame 1, a front wheel assembly 2, a rear wheel assembly 3, a front compartment assembly 4, an external electrical installation mechanism 5, a floor assembly 6, and a front compartment shell 7. The chassis frame 1 includes longitudinal beams 101 symmetrically arranged on both sides, and a front crossbeam 102, a first intermediate crossbeam 103, a second intermediate crossbeam 104, and a rear crossbeam 105 arranged parallel to each other between the two longitudinal beams 101. The front crossbeam 102 and the first intermediate crossbeam 103 form a U-shaped front wheel support 106 between the two longitudinal beams 101 corresponding to the front crossbeam 102 and the first intermediate crossbeam 103. The first intermediate crossbeam 103 and the first intermediate crossbeam 104 form a U-shaped front wheel support 106. The battery pack support 107 is formed between the two intermediate crossbeams 104, and the rear wheel support 108 is formed between the second intermediate crossbeam 104 and the tail end crossbeam 105. The front wheel assembly 2 is installed below the front wheel support 106, and the rear wheel assembly 3 is installed below the rear wheel support 108. The battery pack support 107 is used to install the battery pack. The external electrical installation position mechanism 5 is provided on the outer side of the two longitudinal beams 101 corresponding to the first intermediate crossbeam 103 and the second intermediate crossbeam 104. The bottom plate assembly 6 is provided on the surface of the chassis frame 1, and the front compartment shell 7 is covered on the outside of the front compartment assembly 4.

[0020] like Figure 5 As shown, specifically, in this embodiment, the chassis frame 1 is the core load-bearing foundation of the entire vehicle, and is formed by welding high-strength steel. It includes two longitudinal beams 101 arranged symmetrically on the left and right, with the longitudinal beams 101 extending along the vehicle's driving direction; four transverse beams are arranged parallel between the two longitudinal beams 101, namely the front transverse beam 102, the first intermediate transverse beam 103, the second intermediate transverse beam 104, and the rear transverse beam 105. The two ends of each transverse beam are fixed to the longitudinal beams 101 by processes such as full welding, forming a rigid frame of "two longitudinal and four transverse".

[0021] Based on the precise layout of the crossbeams and longitudinal beams, the chassis frame 1 is divided into five functional areas, including: Front wheel support 106: It is formed by the longitudinal beams 101 corresponding to the front crossbeam 102 and the first intermediate crossbeam 103, and has a zigzag structure. Battery pack support 107: It is formed by the first intermediate crossbeam 103 and the second intermediate crossbeam 104, and its outline dimensions are adapted to the standard logistics vehicle battery pack. Rear wheel support 108: It is formed by the longitudinal beams 101 corresponding to the second intermediate crossbeam 104 and the tail end crossbeam 105; Front cabin support 110: It is formed by the surface enclosure of the front crossbeam 102 and the front wheel assembly support crossbeam 109. The front wheel assembly support crossbeam 109 is located between the front crossbeam 102 and the first intermediate crossbeam 103, and its two ends are fixed to the inner wall of the longitudinal beam (101). External electrical appliance installation area: It is formed by the outer side of the longitudinal beam 101 corresponding to the first intermediate crossbeam 103 and the second intermediate crossbeam 104, and is symmetrically arranged to accommodate the installation of left and right electrical appliances.

[0022] like Figure 6 - Figure 9 As shown, in this embodiment, the front wheel assembly 2 is installed below the front wheel support 106 and is a non-powered driven wheel assembly, which has both elastic support and precise steering functions. Specifically: The front wheel elastic support 202 is composed of several stacked steel leaf springs 201, and its two ends are hinged to the front spring front bracket 203 and the front spring rear bracket 204, which have both elastic buffering and guiding functions. The front wheel elastic support component 202 has a cast steel front wheel support shaft fixing seat 214 welded to the middle section, which is fixedly connected to the front wheel support shaft 205. The two ends of the front wheel support shaft 205 are detachably connected to the front wheel arm 206, and the end of the front wheel arm away from the support shaft is hinged to the front wheel module 207. The outer wall of the front wheel support shaft 205 is welded to the electric steering assembly support 215, which is fastened to the electric steering assembly 208. The front wheel steering rods 209 at both ends of the commutator are connected to the front wheel module 207 to achieve synchronous and precise steering of the front wheels. The front wheel shock absorber bracket 212 is symmetrically welded to the outer side of the longitudinal beam 101 and is hinged to one end of the front wheel hydraulic shock absorber 213. The other end of the front wheel hydraulic shock absorber 213 is hinged to the front wheel support axle fixing seat 214, forming a dual shock absorption system. The front wheel support axle 205 is provided with a front wheel longitudinal limiting seat 210, the bottom surface of the longitudinal beam is provided with a corresponding front wheel longitudinal limiting post 211, and the contact surface is provided with a buffer pad.

[0023] like Figure 6 - Figure 9 As shown, in this embodiment, the rear wheel assembly 3 is installed below the rear wheel support 108 and is a power drive wheel assembly that combines power transmission and heavy-duty buffering. Specifically: The rear wheel elastic support 302 is composed of several stacked steel leaf springs 301, and its two ends are hinged to the front bracket 303 and the rear bracket 304 of the rear spring, which has excellent load-bearing strength and elastic recovery ability. The rear wheel elastic support 302 has a cast steel rear wheel axle sleeve fixing seat 313 welded to the middle section, which is fixedly connected to the rear wheel axle sleeve 305; the rear wheel axle sleeve 305 is movably connected to the rear wheel axle 306, and both ends of the rear wheel axle are fixedly connected to the rear wheel module 307; the rear wheel axle sleeve 305 has a rear wheel motor bracket 308 welded to the outer wall, which is fixed to the rear wheel motor 309; the output shaft of the rear wheel motor is connected to the input end of the rear wheel reducer 310, and the output end of the rear wheel reducer is connected to the rear wheel axle for transmission, so as to realize efficient power transmission; The rear wheel assembly support beam 111 is made of high-strength channel steel, and both ends are fully welded or bolted to the inner wall of the longitudinal beam on both sides; the lower surface of the support beam is symmetrically welded with the upper rear wheel shock absorber bracket 314, which is hinged to one end of the rear wheel hydraulic shock absorber 316, and the other end of the rear wheel hydraulic shock absorber 316 is hinged to the lower rear wheel shock absorber bracket 315 on the outer wall of the rear wheel axle sleeve, forming a double shock absorption; The rear wheel axle sleeve 305 is provided with a rear wheel longitudinal limiting seat 311, the bottom surface of the longitudinal beam is provided with a corresponding rear wheel longitudinal limiting post 312, and the contact surface is provided with a buffer pad.

[0024] like Figure 3 and Figure 4 As shown, in this embodiment, the front cabin assembly 4 is fixed to the front cabin support 110 and is used to integrate core components such as the control module and sensing sensors. It works in conjunction with the front cabin shell 7 to achieve a protective function, specifically: The front cabin frame 401 is welded from aluminum alloy square tubes and is fixedly connected to the crossbeam of the front cabin support 110 by angle iron; the front cabin side frame 402 is symmetrically welded to both sides below the front cabin frame 401, and the front wheel fender mounting seat 404 is welded to the outer side wall. The front cabin shell 7 is integrally injection molded from ABS engineering plastic, and the inner wall is provided with several buckles that are connected to the front cabin frame 401 and the front cabin side frame 402. The front wheel baffle 405 is made of wear-resistant rubber and is fixed to the front wheel baffle mounting base 404 by bolts, and is fitted and sealed to the side of the front housing 7; the arc-shaped anti-collision strip 403 is made of elastic polyurethane and is fixed to the front end face of the front housing 7 by brackets.

[0025] like Figure 10 and Figure 11 As shown, in this embodiment, the external electrical appliance mounting mechanism 5 is symmetrically arranged on the outside of the longitudinal beam 101, and is used to install electrical components such as the electrical control box and communication module. Specifically: The electrical bracket 501 is formed by bending cold-rolled steel plate and fixed to the longitudinal beam by welding. Several independent electrical installation positions 502 are provided on it. An outer side skirt assembly 503 is provided, including a front side skirt 504, a middle movable side skirt 505, and a rear side skirt 506. The front side skirt 504 and the rear side skirt 506 are fixed to the electrical bracket 501 by bolts. The middle movable side skirt 505 is hinged to the electrical bracket 501 by hinges, or detachably connected to the electrical bracket 501 by screws. An electrical bracket base plate 507 is welded to the bottom of the electrical bracket. A tail skirt bracket 509 is installed near the tail end crossbeam 105 on the longitudinal beam 101 to fix the C-shaped tail skirt 510.

[0026] like Figure 12 and Figure 13As shown, in this embodiment, the base plate assembly 6 covers the surface of the chassis frame 1 and is used to support materials, specifically: The base frame 601 is welded from high-strength square tubing, and its bottom surface is welded with a base support beam 603 that is compatible with the longitudinal beam 101; the base plate 602 is made of anti-slip patterned steel plate and is fixed to the base frame 601 by rivets. The inner wall of the longitudinal beam 603 of the base plate support is fitted with the outer wall of the longitudinal beam 101 and is longitudinally fastened to the longitudinal beam 101 by bolts; a shock-absorbing buffer is provided between the longitudinal beam 603 of the base plate support and the longitudinal beam 101; the outer side of the longitudinal beam 603 of the base plate support is connected to the base plate diagonal brace 604 by bolts or welding, the upper end of the base plate diagonal brace 604 is connected to the longitudinal beam 603 of the base plate frame 601, and the lower end of the base plate diagonal brace 604 is connected to the longitudinal beam 101 by bolts to form a stable structure.

[0027] The above description is merely illustrative of the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An unmanned logistics vehicle, characterized in that, The chassis includes a chassis frame (1), a front wheel assembly (2), a rear wheel assembly (3), a front cabin assembly (4), an external electrical installation mechanism (5), a floor assembly (6), and a front cabin shell (7). The chassis frame (1) includes longitudinal beams (101) arranged symmetrically on the left and right, and a front crossbeam (102), a first intermediate crossbeam (103), a second intermediate crossbeam (104), and a rear crossbeam (105) arranged parallel to each other between the two longitudinal beams (101). The front crossbeam (102) and the two longitudinal beams (101) corresponding to the first intermediate crossbeam (103) form a front wheel support part (106) in the shape of a zigzag. The first intermediate crossbeam (103) and the second intermediate crossbeam (104) form a zigzag front wheel support part (106). The battery pack support (107) is formed between the second intermediate crossbeam (104) and the tail crossbeam (105), and the rear wheel support (108) is formed between the second intermediate crossbeam (104) and the tail crossbeam (105); the front wheel assembly (2) is installed below the front wheel support (106), and the rear wheel assembly (3) is installed below the rear wheel support (108). The battery pack support (107) is used to install the battery pack. The external electrical installation position mechanism (5) is provided on the outer side of the two longitudinal beams (101) corresponding to the first intermediate crossbeam (103) and the second intermediate crossbeam (104). The bottom plate assembly (6) is provided on the surface of the chassis frame (1), and the front cabin shell (7) is covered on the outside of the front cabin assembly (4).

2. The unmanned logistics vehicle according to claim 1, characterized in that, A front wheel assembly support beam (109) is provided between the front crossbeam (102) and the first intermediate crossbeam (103). The two ends of the front wheel assembly support beam (109) are fixed to the inner walls of the two longitudinal beams (101). The front wheel assembly support beam (109) and the upper surface of the front crossbeam (102) enclose each other to form a front cabin support part (110) adapted to the front cabin assembly (4). The front cabin support part (110) is fastened to the front cabin frame (401) of the front cabin assembly (4) by bolts.

3. The unmanned logistics vehicle according to claim 1, characterized in that, A rear wheel assembly support beam (111) is provided between the second intermediate crossbeam (104) and the tail end crossbeam (105). The end of the rear wheel assembly support beam (111) is fixedly connected to the inner wall of the two longitudinal beams (101). A rear wheel shock absorber upper bracket (314) is symmetrically provided on the lower surface of the rear wheel assembly support beam (111).

4. The unmanned logistics vehicle according to claim 1, characterized in that, The outline dimensions of the battery pack support (107) are adapted to the standard logistics vehicle battery pack. The upper surfaces of the first intermediate crossbeam (103) and the second intermediate crossbeam (104) are pre-set with several battery pack mounting holes, which are fastened to the bottom mounting base of the battery pack by T-bolts.

5. The unmanned logistics vehicle according to claim 1, characterized in that, The front wheel assembly (2) includes a front wheel elastic support member (202) composed of several stacked front leaf springs (201). Both ends of the front wheel elastic support member (202) are hinged to the front spring front bracket (203) and the front spring rear bracket (204) corresponding to the front wheel support part (106). A front wheel support axle fixing seat (214) is provided in the middle section of the front wheel elastic support member (202), and the front wheel support axle fixing seat (214) is fixedly connected to the front wheel support axle (205). Both ends of the front wheel support axle (205) are connected to the front wheel control arm (206), and the front wheel control arm (206) is located away from the front wheel support axle (205). One end is hinged to the front wheel module (207); the outer wall of the front wheel support shaft (205) is provided with an electric steering assembly support (215), the electric steering assembly support (215) is fastened to the electric steering assembly (208), and the front wheel steering rods (209) at both ends of the electric steering assembly (208) are connected to the front wheel module (207); the front wheel shock absorber bracket (212) is welded to the outside of the longitudinal beam (101), the front wheel shock absorber bracket (212) is hinged to one end of the front wheel hydraulic shock absorber (213), and the other end of the front wheel hydraulic shock absorber (213) is hinged to the front wheel support shaft fixing seat (214).

6. The unmanned logistics vehicle according to claim 5, characterized in that, The rear wheel assembly (3) includes a rear wheel elastic support (302) composed of several stacked rear leaf springs (301). The two ends of the rear wheel elastic support (302) are hinged to the rear spring front bracket (303) and rear spring rear bracket (304) corresponding to the rear wheel support part (108). A rear wheel axle sleeve fixing seat (313) is provided in the rear wheel elastic support (302), and the rear wheel axle sleeve fixing seat (313) is fixedly connected to the rear wheel axle sleeve (305). The rear wheel axle sleeve (305) is movably connected to the rear wheel axle (306), and the two ends of the rear wheel axle (306) are connected to the rear wheel module (3). 07) Fixed connection; The rear wheel motor bracket (308) is welded to the outer wall of the rear wheel axle sleeve (305), the rear wheel motor bracket (308) is fixed to the rear wheel motor (309), the output shaft of the rear wheel motor (309) is connected to the input end of the rear wheel reducer (310), and the output end of the rear wheel reducer (310) is connected to the rear wheel axle (306) for transmission; The upper rear wheel shock absorber bracket (314) is hinged to one end of the rear wheel hydraulic shock absorber (316), and the other end of the rear wheel hydraulic shock absorber (316) is hinged to the lower rear wheel shock absorber bracket (315) on the outer wall of the rear wheel axle sleeve (305).

7. An unmanned logistics vehicle according to claim 6, characterized in that, The front wheel support axle (205) is welded to the longitudinal beam (101) with a front wheel longitudinal limiting seat (210), and the bottom surface of the longitudinal beam (101) is fixed to the front wheel longitudinal limiting post (211) corresponding to the front wheel longitudinal limiting seat (210). The rear wheel axle sleeve (305) is welded to the longitudinal beam (101) with a rear wheel longitudinal limiting seat (311), and the bottom surface of the longitudinal beam (101) is fixed to the rear wheel longitudinal limiting post (312) corresponding to the rear wheel longitudinal limiting seat (311). The contact surfaces of the front wheel longitudinal limiting seat (210) and the rear wheel longitudinal limiting seat (311) are both covered with a buffer pad.

8. The unmanned logistics vehicle according to claim 1, characterized in that, The front cabin assembly (4) includes a front cabin frame (401) and a front cabin side frame (402). The front cabin frame (401) is formed by welding square tubes and is fixedly connected to the front cabin support (110) by angle iron. The front cabin side frame (402) is symmetrically welded to both sides below the front cabin frame (401), and the front wheel chock mounting seat (404) is welded to the outer side wall of the front cabin side frame (402). The front cabin shell (7) is integrally injection molded from ABS engineering plastic, and its inner wall is provided with several buckles that are snapped together with the front cabin frame (401) and the front cabin side frame (402). The front wheel baffle (405) is fixed to the front wheel baffle mounting seat (404) and is sealed to the side of the front cabin shell (7); The arc-shaped anti-collision strip (403) is fixed to the front end face of the front cabin shell (7) by means of a bracket.

9. An unmanned logistics vehicle according to claim 1, characterized in that, The external electrical installation mechanism (5) includes an electrical bracket (501) symmetrically welded to the outside of the longitudinal beam (101), and a plurality of independent electrical installation positions (502) are provided on the electrical bracket (501); a side skirt assembly (503) is provided on the outside of the electrical bracket (501), and the side skirt assembly (503) includes a front side skirt (504) and a rear side skirt (506) fixed to the electrical bracket (501) by bolts, and a movable side skirt (505) in the middle section of the side skirt that is detachably connected or hinged to the electrical bracket (501).

10. An unmanned logistics vehicle according to claim 1, characterized in that, The base plate assembly (6) includes a base plate frame (601) and a base plate (602). The bottom surface of the base plate frame (601) is welded with a base plate support longitudinal beam (603) adapted to the longitudinal beam (101). The inner side wall of the base plate support longitudinal beam (603) is attached to the outer side wall of the longitudinal beam (101) and is longitudinally fastened to the longitudinal beam (101) by bolts. The outer side of the base plate support longitudinal beam (603) is welded with a base plate diagonal brace (604). The upper end of the base plate diagonal brace (604) is connected to the base plate support longitudinal beam (603) of the base plate frame (601), and the lower end of the base plate diagonal brace (604) is connected to the longitudinal beam (101).

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