Chassis frame and motor sweeper

Abstract

The utility model discloses a chassis frame and a motor sweeper, and belongs to the technical field of motor sweepers, the chassis frame comprises a first bearing part, a transition part and a second bearing part which are sequentially connected along the front-back direction, the first bearing part is used for connecting a cab, and the transition part is used for connecting the first bearing part and the second bearing part; the width of the transition part is smaller than that of the first bearing part and that of the second bearing part, so that avoiding spaces are formed on the two sides of the transition part, the second bearing part is used for connecting the battery equipment and the operation mechanism, and at least part of the first bearing part is lower than the transition part. The sweeping vehicle comprises an upper-layer vehicle frame and the chassis vehicle frame, wherein the upper-layer vehicle frame is arranged on the chassis vehicle frame. According to the chassis frame, large-angle turning is achieved through the narrow edge design of the transition part and the height difference between the first bearing part and the transition part, and the chassis frame can be compatible with a manned driving mode and an unmanned driving mode by clearly dividing the functional area of the chassis frame.

Description

Technical Field

[0001] This utility model relates to the field of sweeper technology, and in particular to a chassis frame and a sweeper. Background Technology

[0002] With the increasing demands for urban environmental sanitation, the demand for sweepers is also increasing. Sweepers are used to clean and remove dust from outdoor areas such as roads and squares.

[0003] Traditional sweepers typically rely on manual operation, resulting in high labor costs and reduced efficiency due to driver fatigue. In recent years, the rise of autonomous driving technology has led to the application of autonomous sweepers in various fields. However, most existing sweeper chassis are designed for either manned or autonomous operation alone, failing to meet the need for flexible switching between manned and autonomous modes in different scenarios. When manual intervention is required for emergency handling, cleaning complex road sections, or equipment debugging, a sweeper designed solely for autonomous operation cannot easily switch to manned mode. Conversely, upgrading a purely manned sweeper to achieve autonomous operation often requires significant modifications or even redesign of the chassis structure, incurring substantial time, manpower, and material costs.

[0004] Furthermore, traditional sweeper chassis often employ a design that reduces the diameter of the front tires to achieve a larger turning angle. A reduced tire diameter directly alters the contact area between the tire and the ground, significantly decreasing load-bearing capacity and consequently affecting the overall vehicle's load-bearing capacity. Utility Model Content

[0005] The purpose of this utility model is to provide a chassis frame and a sweeper to solve the technical problems in the prior art where the diameter of the front wheels needs to be reduced in order to achieve a larger turning angle, thus affecting the overall vehicle performance, and the existing chassis frames have poor adaptability.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] On the one hand, this utility model provides a chassis frame, including:

[0008] A first load-bearing section, a transition section, and a second load-bearing section are connected sequentially in a front-rear direction. The first load-bearing section is used to connect the cab. The transition section is used to connect the first load-bearing section and the second load-bearing section. The width of the transition section is smaller than the width of the first load-bearing section and the second load-bearing section, thereby forming a clearance space on both sides of the transition section. The second load-bearing section is used to connect the battery equipment and the working mechanism. At least part of the height of the first load-bearing section is lower than the height of the transition section.

[0009] Preferably, the first load-bearing part includes at least two parallel first main beams and a plurality of first auxiliary beams for connecting the first main beams;

[0010] And / or, the second load-bearing part includes at least two parallel second main beams and a plurality of second auxiliary beams for connecting the second main beams; the first main beam and the second main beam are located on the same vertical plane along the vehicle body direction.

[0011] Preferably, the transition section includes a transition beam, which is divided into a bent section and a horizontal section along its extension direction. The horizontal section is parallel to the first main beam and the second main beam. One end of the horizontal section is connected to the first load-bearing section, and the other end is connected to the bent section. The bent section passes through the second auxiliary beam and bends towards the second main beam and is connected to the second main beam. The bent section, the second main beam, and the second auxiliary beam form a triangle.

[0012] Preferably, the first supporting part includes a vertical section and a horizontal section connected to each other, the upper part of the vertical section is connected to the transition part, the lower part of the vertical section is connected to the horizontal section, the horizontal section is parallel to the transition part and the height of the horizontal section is lower than the height of the transition part.

[0013] Preferably, a first reinforcing diagonal brace is provided between the vertical section and the horizontal section; and / or, a second reinforcing diagonal brace is provided between the vertical section and the transition portion.

[0014] Preferably, a battery compartment is provided at the bottom of the second support part, and the battery compartment is connected to the second support part by a pin. An accommodating space is formed inside the battery compartment, and the accommodating space is used to accommodate the battery device.

[0015] Preferably, the top of the first load-bearing part is provided with a plurality of first mounting supports, which are arranged in a rectangular array at intervals, and the cab is detachably connected to the first mounting supports.

[0016] Preferably, the top of the second bearing part is provided with a plurality of second mounting supports, which are arranged in a rectangular array at intervals, and the water tank in the working mechanism is detachably connected to the second mounting supports.

[0017] Preferably, the chassis frame further includes a third load-bearing part, which is connected to the side of the second load-bearing part away from the transition part. The third load-bearing part is provided with two third mounting supports, which are symmetrically arranged, and the garbage bin can be detachably connected to the third mounting supports.

[0018] On the other hand, this utility model also provides a sweeper, including an upper frame, a working mechanism and the aforementioned chassis frame, wherein the upper frame and the working mechanism are mounted on the chassis frame.

[0019] The beneficial effects of this utility model are:

[0020] The chassis frame proposed in this utility model features a transition section that connects to the front wheels. The width of this transition section is smaller than that of the first and second load-bearing sections, creating clearance space on both sides of the transition section. This makes the overall vehicle width more compact and provides greater turning space for the front wheels, making the sweeper more agile when turning and enabling it to easily achieve larger turning angles. Furthermore, the front-to-rear height difference design, where at least part of the first load-bearing section is lower than the transition section, provides ample space for front wheel turning, allowing for larger turning angles without reducing the front wheel diameter.

[0021] Furthermore, the various parts of the chassis frame in this application are independent of each other and have clearly defined specific functions. For example, the first load-bearing section is specifically used to connect the cab, the transition section is used to connect the various parts of the frame and ensure the steering space of the front wheels, and the second load-bearing section is used to connect battery equipment and working mechanisms, etc. When it is necessary to switch between manned and unmanned driving modes, only the core components related to the driving mode need to be replaced accordingly, such as sensors and control systems, without interfering with the normal function of other components, and without the need for large-scale replacement or redesign of the entire chassis frame, thus improving the adaptability of the chassis frame.

[0022] This utility model also provides a sweeper vehicle that adopts the aforementioned chassis frame, thereby enabling it to adapt more flexibly to different work scenarios and needs. Whether sweeping complex road sections that require manual operation or operating in regular areas suitable for unmanned driving, it can quickly and efficiently complete mode switching to ensure the smooth progress of sweeping work. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the chassis frame provided in Embodiment 1 of this utility model;

[0024] Figure 2 This is a schematic diagram of the first supporting part structure provided in Embodiment 1 of this utility model.

[0025] In the picture:

[0026] 1. First load-bearing section; 101. Vertical section; 102. Horizontal section; 11. First main beam; 12. First auxiliary beam; 13. First reinforcing diagonal brace; 14. First mounting support; 15. Special mounting support;

[0027] 2. Transition section; 21. Transition beam; 211. Bending section; 212. Horizontal section; 22. Second reinforcing diagonal brace;

[0028] 3. Second load-bearing section; 31. Second main beam; 32. Second auxiliary beam; 33. Second mounting support; 34. Third reinforcing diagonal brace; 35. Battery compartment;

[0029] 4. Third load-bearing component; 41. Third main beam; 42. Third auxiliary beam; 43. Third mounting support. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1

[0035] See Figure 1 and Figure 2The chassis frame provided in this embodiment of the utility model includes a first load-bearing part 1, a transition part 2, and a second load-bearing part 3 connected sequentially in the front-rear direction. The first load-bearing part 1 is used to connect the cab, the transition part 2 is used to connect the first load-bearing part 1 and the second load-bearing part 3, and the width of the transition part 2 is smaller than the width of the first load-bearing part 1 and the second load-bearing part 3, thereby forming a clearance space on both sides of the transition part 2. The second load-bearing part 3 is used to connect the battery equipment and the working mechanism, and at least part of the height of the first load-bearing part 1 is lower than the height of the transition part 2.

[0036] It is understood that in this embodiment, the two sides of the transition part 2 are used to connect the front drive system and the front wheel, and the rear side of the second load-bearing part 3 is used to connect the rear drive system and the rear wheel.

[0037] The chassis frame proposed in this utility model, because the transition section 2 connects to the front wheel, and the width of the transition section 2 is smaller than the width of the first load-bearing section 1 and the second load-bearing section 3, creates clearance space on both sides of the transition section 2, making the overall vehicle width more compact. This clearance space provides greater turning space for the front wheels, making the sweeper more agile when turning and enabling it to easily achieve larger turning angles. Furthermore, the front-to-rear height difference design, where at least part of the first load-bearing section 1 is lower than the height of the transition section 2, provides greater space for front wheel turning, allowing for larger turning angles without reducing the diameter of the front wheels.

[0038] Furthermore, the various parts of the chassis frame in this application are independent of each other and have clearly defined specific functions. For example, the first load-bearing part 1 is specifically used to connect the cab, the transition part 2 is used to connect the various parts of the frame and ensure the steering space of the front wheels, and the second load-bearing part 3 is used to connect battery equipment and working mechanisms, etc. When it is necessary to switch between manned and unmanned driving modes, only the core components related to the driving mode need to be replaced accordingly, such as sensors and control systems, without interfering with the normal function of other components, and without the need for large-scale replacement or redesign of the entire chassis frame, thus improving the adaptability of the chassis frame.

[0039] The specific structure of the chassis frame will be described below.

[0040] The first load-bearing section 1 includes at least two parallel first main beams 11 and multiple first auxiliary beams 12 for connecting the first main beams 11; thereby, the load can be distributed more evenly, improving the overall strength and rigidity of the frame. In addition, the weight distribution of the first load-bearing section 1 can be optimized, reducing the overall weight of the frame while ensuring strength, thereby reducing the energy consumption of the sweeper and improving its working efficiency and economy.

[0041] For example, a first main beam 11 extends in the front-to-back direction, and two first main beams 11 are provided, arranged at intervals perpendicular to the front-to-back direction. A first auxiliary beam 12 extends perpendicular to the main beams, and the end of the first auxiliary beam 12 is welded to the first main beam 11. Two first auxiliary beams 12 are provided, and the two first main beams 11 and the two first auxiliary beams 12 are arranged in a rectangular shape.

[0042] Specifically, the first main beam 11 and the first auxiliary beam 12 are made of rectangular tubes made of Q355B material, which have the advantages of strong load-bearing capacity and light weight.

[0043] To achieve the height difference between the first load-bearing section 1 and the transition section 2, the first load-bearing section 1 includes a vertical section 101 and a horizontal section 102 connected to each other. The upper part of the vertical section 101 is connected to the transition section 2, and the lower part of the vertical section 101 is connected to the horizontal section 102. The horizontal section 102 is parallel to the transition section 2, and its height is lower than that of the transition section 2. The vertical section 101 ensures vertical support and stability, while the horizontal section 102 provides more rational space utilization and load distribution in the horizontal direction. Through the cooperation of the vertical section 101 and the horizontal section 102, the structural strength requirements are met, and the spatial layout is optimized.

[0044] Specifically, a first reinforcing diagonal brace 13 is provided between the vertical section 101 and the horizontal section 102, which can effectively enhance the stability of the connection between the vertical section 101 and the horizontal section 102, disperse the stress at the connection, and improve the deformation resistance of the first load-bearing part 1 when subjected to various loads.

[0045] Multiple special mounting supports 15 are welded on the horizontal section 102. The special mounting supports 15 are provided with mounting holes for connecting special equipment.

[0046] Specialized equipment can include brake pedals, brake controllers, steering controllers, etc.

[0047] Since the first load-bearing part 1 is used to connect the cab, in order to facilitate the installation and fixing of the cab, the top of the first load-bearing part 1 is provided with multiple first mounting supports 14. The multiple first mounting supports 14 are arranged in a rectangular array at intervals. The cab and the first mounting supports 14 can be detachably connected so that when switching driving modes or when the cab needs to be repaired, replaced or upgraded, it can be quickly separated from the first mounting supports 14, saving operation time and labor costs.

[0048] Specifically, there are four first mounting supports 14. Two of the first mounting supports 14 are welded to the two corners near the front end of the first bearing part 1, and the other two first mounting supports 14 are welded to the two second reinforcing diagonal braces 22 respectively, so that the first bearing part 1 is subjected to force more evenly and the pressure applied by the cab is distributed.

[0049] The second load-bearing section 3 includes at least two parallel second main beams 31 and multiple second auxiliary beams 32 for connecting the second main beams 31; this allows for a more even distribution of load, improving the overall strength and rigidity of the frame. Furthermore, it optimizes the weight distribution of the second load-bearing section 3, reducing the overall weight of the frame while maintaining strength, thereby lowering the sweeper's energy consumption and improving its work efficiency and economy.

[0050] It is worth noting that, in order to ensure the levelness of the chassis frame to facilitate the installation of subsequent components, the first main beam 11 and the second main beam 31 are located on the same vertical plane along the vehicle body direction.

[0051] For example, the second main beam 31 extends in the front-to-back direction, and there are two second main beams 31 arranged at intervals perpendicular to the front-to-back direction. The second auxiliary beam 32 extends perpendicular to the main beams, and the ends of the second auxiliary beams 32 are welded to the second main beams 31. There are two second auxiliary beams 32, and the two second main beams 31 and the two second auxiliary beams 32 are arranged in a rectangular shape.

[0052] Specifically, the second main beam 31 and the second auxiliary beam 32 are made of rectangular tubes made of Q355B, which have the advantages of high load-bearing capacity and light weight.

[0053] The transition section 2 serves to connect the first support section 1 and the second support section 3. The transition section 2 and the second support section 3 are located on the same horizontal plane, and the first support section 1 is lower than the plane where the transition section 2 and the second support section 3 are located.

[0054] For example, the transition section 2 includes a transition beam 21, which is divided into a bent section 211 and a horizontal section 212 along its extension direction. The horizontal section 212 is parallel to the first main beam 11 and the second main beam 31. One end of the horizontal section 212 is connected to the first load-bearing section 1, and the other end is connected to the bent section 211. The bent section 211 passes through the second auxiliary beam 32 and bends towards the second main beam 31 and is connected to the second main beam 31. The bent section 211, the second main beam 31 and the second auxiliary beam 32 form a triangle, thereby further improving stability.

[0055] To further improve the stability of the connection between the transition section 2 and the first load-bearing section 1, a second reinforcing diagonal brace 22 is provided between the vertical section 101 and the transition section 2, which enhances the reliability of the connection between the vertical section 101 and the transition section 2, makes the force transmission more uniform and stable, and further improves the overall strength of the chassis frame.

[0056] In addition, a third reinforcing brace 34 is provided between the second main beam 31 and the second auxiliary beam 32, which can effectively enhance the stability of the connection between the second main beam 31 and the second auxiliary beam 32.

[0057] The top of the second load-bearing section 3 is provided with multiple second mounting supports 33, which are arranged in a rectangular array at intervals. The water tank in the working mechanism is detachably connected to the second mounting supports 33. This rectangular array arrangement makes the force on the water tank more even, effectively distributing the weight of the water tank and reducing damage to the second load-bearing section 3 caused by excessive local pressure, thereby improving the structural stability and service life of the second load-bearing section 3. Since the water tank is detachably connected to the second mounting supports 33, maintenance, repair, or replacement of the water tank can be carried out conveniently and quickly, saving time and labor costs. At the same time, the detachable connection method also facilitates the replacement of water tanks of different specifications according to different work tasks and needs, improving the versatility and adaptability of the chassis frame.

[0058] A battery compartment 35 is located at the bottom of the second load-bearing section 3. The battery compartment 35 is connected to the second load-bearing section 3 via a pin. The battery compartment 35 forms a storage space for housing battery equipment. The battery compartment 35 provides an independent and safe storage space for the battery equipment, effectively protecting it from external environmental interference and damage, such as impacts, dust, and moisture, thereby extending the battery equipment's lifespan. The pin connection makes the installation and removal of the battery compartment 35 simple and quick. When maintenance, replacement, or upgrades of the battery equipment are required, the battery compartment 35 can be quickly removed, improving work efficiency and reducing maintenance costs. Furthermore, the design of the battery compartment 35 makes full use of the space at the bottom of the second load-bearing section 3, resulting in a more compact and rational overall chassis frame layout, reducing wasted space and improving space utilization.

[0059] Specifically, four limiting plates are installed inside the battery compartment 35, located at the four vertices of the rectangle. These plates abut against the four corners of the battery device to secure it. This precise positioning ensures the stability of the battery device within the battery compartment 35, while also making its installation position more accurate and consistent. This facilitates the installation and removal of the battery device, improving the efficiency of maintenance and replacement.

[0060] The battery device can be a lithium battery, a rechargeable battery, or other electrical equipment, and there are no restrictions on its use.

[0061] To further improve the load-bearing capacity of the chassis frame, the chassis frame also includes a third load-bearing section 4. The third load-bearing section 4 is connected to the side of the second load-bearing section 3 away from the transition section 2. The third load-bearing section 4 is equipped with two third mounting supports 43, which are symmetrically arranged. The garbage bin can be detachably connected to the third mounting supports 43. The two symmetrically arranged third mounting supports 43 provide balanced and stable support for the garbage bin, effectively preventing the garbage bin from shaking and tilting during vehicle operation, especially during acceleration, deceleration, and turning, ensuring stable storage of garbage inside and avoiding secondary pollution caused by garbage leakage. The detachable connection facilitates the installation and removal of the garbage bin. When the garbage bin is full and needs to be emptied, it can be quickly removed for processing, saving time and labor costs. At the same time, it also facilitates the maintenance and replacement of the garbage bin, improving the availability and maintenance convenience of the equipment.

[0062] The third load-bearing section 4 includes at least two parallel third main beams 41 and multiple third auxiliary beams 42 for connecting the third main beams 41; this allows for a more even distribution of load, improving the overall strength and rigidity of the frame. Furthermore, it optimizes the weight distribution of the third load-bearing section 4, reducing the overall weight of the frame while maintaining strength, thereby lowering the sweeper's energy consumption and improving its work efficiency and economy.

[0063] For example, the third main beam 41 extends in the front-to-back direction, and there are two third main beams 41 arranged at intervals perpendicular to the front-to-back direction. The third auxiliary beam 42 extends perpendicular to the main beam, and the end of the third auxiliary beam 42 is welded to the third main beam 41. There are two third auxiliary beams 42, and the two third main beams 41 and the two third auxiliary beams 42 are arranged in a rectangular shape.

[0064] Specifically, the third main beam 41 and the third auxiliary beam 42 are made of rectangular tubes made of Q355B, which have the advantages of high load-bearing capacity and light weight.

[0065] Example 2

[0066] This embodiment provides a sweeper vehicle, which includes an upper frame, a working mechanism, and a chassis frame as provided in Embodiment 1. The upper frame and the working mechanism are mounted on the chassis frame. By adopting the chassis frame provided in Embodiment 1, the sweeper vehicle can more flexibly adapt to different working scenarios and needs. Whether sweeping complex road sections requiring manual operation or operating in regular areas suitable for unmanned driving, it can quickly and efficiently complete mode switching, ensuring the smooth progress of the sweeping work.

[0067] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A chassis frame, characterized in that, include: A first load-bearing part (1), a transition part (2), and a second load-bearing part (3) are connected sequentially in the front-rear direction. The first load-bearing part (1) is used to connect the cab. The transition part (2) is used to connect the first load-bearing part (1) and the second load-bearing part (3). The width of the transition part (2) is smaller than the width of the first load-bearing part (1) and the second load-bearing part (3), thereby forming a clearance space on both sides of the transition part (2). The second load-bearing part (3) is used to connect the battery equipment and the working mechanism. At least part of the height of the first load-bearing part (1) is lower than the height of the transition part (2).

2. The chassis frame according to claim 1, characterized in that, The first load-bearing part (1) includes at least two parallel first main beams (11) and a plurality of first auxiliary beams (12) for connecting the first main beams (11). And / or, the second load-bearing part (3) includes at least two parallel second main beams (31) and a plurality of second auxiliary beams (32) for connecting the second main beams (31); the first main beam (11) and the second main beam (31) are located on the same vertical plane along the vehicle body direction.

3. The chassis frame according to claim 2, characterized in that, The transition section (2) includes a transition beam (21), which is divided into a bent section (211) and a horizontal section (212) along its extension direction. The horizontal section (212) is parallel to the first main beam (11) and the second main beam (31). One end of the horizontal section (212) is connected to the first bearing section (1), and the other end is connected to the bent section (211). The bent section (211) passes through the second auxiliary beam (32) and bends towards the second main beam (31) and is connected to the second main beam (31). The bent section (211), the second main beam (31), and the second auxiliary beam (32) form a triangle.

4. The chassis frame according to claim 1, characterized in that, The first supporting part (1) includes a vertical section (101) and a horizontal section (102) connected to each other. The upper part of the vertical section (101) is connected to the transition part (2), and the lower part of the vertical section (101) is connected to the horizontal section (102). The horizontal section (102) is parallel to the transition part (2), and the height of the horizontal section (102) is lower than the height of the transition part (2).

5. The chassis frame according to claim 4, characterized in that, A first reinforcing diagonal brace (13) is provided between the vertical section (101) and the horizontal section (102); and / or, a second reinforcing diagonal brace (22) is provided between the vertical section (101) and the transition section (2).

6. The chassis frame according to claim 1, characterized in that, The bottom of the second support part (3) is provided with a battery compartment (35), which is connected to the second support part (3) by a pin. The battery compartment (35) forms an accommodating space for accommodating the battery device.

7. The chassis frame according to claim 1, characterized in that, The top of the first load-bearing part (1) is provided with a plurality of first mounting supports (14), which are arranged in a rectangular array at intervals. The cab is detachably connected to the first mounting supports (14).

8. The chassis frame according to claim 1, characterized in that, The second bearing part (3) is provided with a plurality of second mounting supports (33), which are arranged in a rectangular array at intervals. The water tank in the working mechanism is detachably connected to the second mounting supports (33).

9. The chassis frame according to claim 1, characterized in that, The chassis frame also includes a third load-bearing part (4), which is connected to the side of the second load-bearing part (3) away from the transition part (2). The third load-bearing part (4) is provided with two third mounting supports (43), which are symmetrically arranged. The garbage bin can be detachably connected to the third mounting supports (43).

10. A sweeper vehicle, characterized in that, It includes an upper frame, a working mechanism, and a chassis frame as described in any one of claims 1-9, wherein the upper frame and the working mechanism are disposed on the chassis frame.

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