Vehicle body for low-speed vehicle and low-speed unmanned vehicle

Abstract

The utility model provides a vehicle body for a low-speed vehicle and a low-speed unmanned vehicle, and the vehicle body for the low-speed vehicle comprises a vehicle frame 3, an upper mounting frame 4, an exterior structural part 1 and an inner supporting bracket 2, the frame 3 is supported on wheels, and the loading frame 4 is fixedly mounted above the frame 3; the inner supporting bracket 2 comprises a preset supporting frame and a supporting beam, the whole inner supporting bracket 2 is fixedly mounted by taking the frame 3 and the upper mounting frame 4 as mounting bases, and a mounting frame of the exterior structural part 1 is formed; the exterior structural member 1 is mounted on a mounting frame formed by the inner support bracket 2 through a fixing structure. Compared with the prior art, the vehicle body provided by the utility model has the advantages that the transition frame, namely the inner support bracket, is additionally arranged among the frame, the upper frame and the outer decorating part, so that the problem caused by insufficient welding precision of traditional steel is solved, the processing precision requirement in the production and manufacturing process is reduced, and the production cost and the process requirement are reduced. The utility model further provides the unmanned low-speed vehicle using the vehicle body for the low-speed vehicle.

Description

Technical Field

[0001] The present application relates to vehicle technology, and in particular to a body of a low-speed vehicle. The present application also provides a low-speed unmanned vehicle, which uses the body of the low-speed vehicle. Background Art

[0002] The frame and upper frame materials of low-speed unmanned vehicles are basically made of steel pipes and steel plates that are bent and welded. Due to the influence of the processing dimensional accuracy and welding accuracy of the steel itself, the hole dimensional accuracy of the frame after welding may reach centimeter-level deviation.

[0003] Under the existing technology, the outer coverings of this type of vehicle are installed on the frame and the upper frame by bolting. The conventional outer covering assembly method is to connect them with the mounting holes of the back-welded nuts pre-opened on the frame or the upper frame by bolts, and the gap and face difference size deviation of the outer covering needs to be controlled within millimeters. If the welding and assembly size deviations of the frame or the upper frame are large, there will be problems with poor appearance quality such as gap and face difference after the outer covering is installed.

[0004] For the above problems, the following solutions are usually adopted in the prior art:

[0005] First, at the design level, unify the installation datum of the frame and the outer covering parts, and try to unify the assembly datum on one or several parts of the frame, so as to minimize the cumulative deviation caused by frame processing and welding deviation;

[0006] Secondly, in the production and manufacturing process, try to control and improve the processing and manufacturing accuracy of components such as the frame, upper frame and outer covering parts, such as making special stamping dies and welding fixtures and other tooling; in the assembly process, try to increase the installation holes of the outer covering parts, and increase the adjustment amount of the outer covering parts by increasing the bolt holes.

[0007] However, the above solutions have their own problems. Using a unified installation reference for the frame and the outer cover will bring new design constraints, increase the design difficulty, and make it impossible to easily introduce new structural elements, while low-speed unmanned vehicles are supposed to be simple in design; the above method of improving processing accuracy will increase production costs and manufacturing difficulty, which is contrary to the requirement of simplifying the production process of low-speed vehicles as much as possible; increasing the installation holes of the outer cover will cause the outer cover to be unsightly, and this method has limited effect and cannot solve most problems.

[0008] Due to the above problems, there is an urgent need to provide a new technical solution to ensure that the aesthetic requirements of the low-speed vehicle outer cover after installation are met, and that excessive requirements are not placed on processing and assembly, so as to meet the requirements of such vehicles for simple process and low price. Utility Model Content

[0009] The present application provides a body of a low-speed vehicle to solve the appearance quality problems such as gaps and surface differences in the installation of outer covering parts due to the limited dimensional accuracy of welding and assembly of the frame and the upper frame in the prior art. The present application also provides a low-speed unmanned vehicle, which uses the body of the low-speed vehicle.

[0010] The embodiment of the present application provides a body of a low-speed vehicle, including: a frame, an upper frame, an exterior structural member, and an inner support bracket;

[0011] The frame is supported on wheels, and the upper frame is fixedly mounted above the frame;

[0012] The inner support bracket includes a preset support frame and a support beam, which are fixedly installed on the vehicle frame and the upper frame as a mounting base, and form an exterior structural component mounting frame;

[0013] The exterior structural member is mounted on the mounting frame formed by the inner support bracket through a fixing structure.

[0014] Optionally, the inner support bracket includes: a left front support bracket, a right front support bracket, a left rear support bracket, a right rear support bracket, a left beam and a right beam;

[0015] The left front support frame is fixed to the left side of the front end of the frame and the front end of the upper frame by a threaded fixing structure, and the right front support frame is fixed to the right side of the front end of the frame and the front end of the upper frame by a threaded fixing structure; the left rear support frame is fixed to the left side of the rear end of the frame and the rear end of the upper frame by a threaded fixing structure, and the right rear support frame is fixed to the right side of the rear end of the frame and the rear end of the upper frame by a threaded fixing structure;

[0016] The left beam has its two ends fixed to the left front support frame and the left rear support frame respectively through a threaded fixing structure, and the right beam has its two ends fixed to the right front support frame and the right rear support frame respectively through a threaded fixing structure.

[0017] Optionally, each of the threaded fixing structures includes a mounting hole for a bolt to pass through, and the mounting hole is provided at a position with sufficient redundant space so that the diameter of the mounting hole can be expanded as required.

[0018] Optionally, the exterior structural member includes a front upper panel, a front lower panel, a top cover, a left upper panel, a left lower panel, a rear upper panel, a rear lower panel, a right upper panel, and a right lower panel;

[0019] The front upper panel and the front lower panel are connected and fixed to the left front support frame and the right front support frame through a threaded fixing structure; the rear upper panel and the rear lower panel are connected and fixed to the left rear support frame and the right rear support frame through a threaded fixing structure; the left upper panel and the left lower panel are connected and fixed to the left front support frame and the left rear support frame through a threaded fixing structure; the right upper panel and the right lower panel are connected and fixed to the right front support frame and the right rear support frame through a threaded fixing structure; the top cover is buckled on the top position of the left front support frame, the right front support frame, the left rear support frame and the right rear support frame.

[0020] Optionally, each component of the exterior structure 1 is a plate.

[0021] Optionally, the four sides of the plate are formed by a flanging and bending process.

[0022] Optionally, the threaded fixing structure connecting the exterior structural member (1) and the inner support bracket (2) includes a bolt process through hole and a bolt fixing hole that are concentrically connected through both sides of the plate near the flange position, the hole diameter of the bolt process through hole is larger than the bolt fixing hole, and the bolt process through hole is located on the outer side of the plate.

[0023] Optionally, a body for a low-speed vehicle provided by the above technical solution is used.

[0024] Compared with the prior art, the vehicle body for low-speed vehicles provided in this application includes a frame, an upper frame, and an exterior structural member, including an inner support bracket; the frame is supported on the wheel, and the upper frame is fixedly installed above the frame; the inner support bracket includes a preset support frame and a support beam, both of which are fixedly installed with the frame and the upper frame as the installation basis, and form an installation frame; the exterior structural member is installed on the installation frame formed by the inner support bracket through a fixed structure. This technical solution adopts an inner support bracket to form the installation basis of the exterior structural member, so that the exterior structural member can be installed on the installation frame formed by the inner support bracket through simple installation steps, and the problem of installation position misalignment caused by insufficient welding accuracy of the frame and the upper frame can be solved by adjusting methods such as expanding holes, adding gaskets, etc., which are relatively simple in process. Since the structure adds an inner support bracket as a transition frame between the frame, the upper frame and the exterior decorative member, it can make up for the problem caused by insufficient welding accuracy of traditional steel materials, reduce the processing accuracy requirements in the production process, and reduce production costs and process requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is an overall appearance diagram of a vehicle body for a low-speed vehicle provided by the first embodiment of the present application;

[0027] Figure 2 It is a structural diagram of a body for a low-speed vehicle provided in the first embodiment of the present application, including an exterior structural member and an inner support bracket;

[0028] Figure 3 It is a structural diagram of an inner support bracket for a body of a low-speed vehicle provided in the first embodiment of the present application;

[0029] Figure 4 It is a structural diagram of an internal frame (including an inner support bracket, a vehicle frame, and an upper frame) of a vehicle body for a low-speed vehicle provided in the first embodiment of the present application after removing the exterior structural parts;

[0030] Figure 5 It is a structural diagram of the internal frame (including the inner support bracket and the frame) of the body of a low-speed vehicle provided in the first embodiment of the present application after removing the exterior structural parts and the upper frame;

[0031] Figure 6 It is a structural diagram of the exterior structural member of the body of a low-speed vehicle provided by the first embodiment of the present application;

[0032] Figure 7 is an overall exploded view of a vehicle body for a low-speed vehicle provided in the first embodiment of the present application;

[0033] Figure 8 It is a parts drawing of one of the component panels (lower right panel) of the exterior structural member of the body of a low-speed vehicle provided in the first embodiment of the present application.

[0034] Figure ID:

[0035] Exterior structural parts 1, inner support bracket 2, vehicle frame 3, upper frame 4;

[0036] Front upper panel 101, front lower panel 102, top cover 103, left upper panel 104, left lower panel 105, rear upper panel 106, rear lower panel 107, right upper panel 108, right lower panel 109;

[0037] Left front support frame 201, right front support frame 202, left rear support frame 203, right rear support frame 204, left beam 205, right beam 206;

[0038] Round plastic plug cover 110. DETAILED DESCRIPTION

[0039] Many specific details are described in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific implementation disclosed below.

[0040] A first embodiment of the present application provides a body for a low-speed vehicle.

[0041] The first embodiment of the present application provides a body for a low-speed vehicle, and its structure is shown in FIG. Figure 1-Figure 7 As shown; the body for the low-speed vehicle includes a frame 3, an upper frame 4, an exterior structural member 1, and an inner support bracket 2.

[0042] The frame 3 is the supporting structure of the whole vehicle, which is composed of a number of longitudinal beams and cross beams, and is supported on the wheels via the suspension device, the front axle and the rear axle. It has sufficient strength and rigidity to withstand the load of the vehicle and the impact from the wheels.

[0043] The upper frame 4 is fixedly mounted above the frame 3 and is a load-bearing frame for a series of special devices mounted on the upper end of the frame, such as a battery pack, a dump bucket, and a working device (such as a sprinkler device for an unmanned sprinkler vehicle) carried on the frame.

[0044] The frame 3 and the upper frame 4 are mainly made of steel pipes and steel plates by bending and welding. Due to the influence of the processing dimensional accuracy and welding accuracy of the steel itself, the hole dimensional accuracy of the frame after welding may reach centimeter level deviation.

[0045] The inner support bracket 2 is an important innovative part of this embodiment, which includes a preset support frame and a support beam. The frame formed by connecting these support frames and support beams constitutes the inner support bracket 2, which is fixedly installed on the vehicle frame 3 and the upper frame 4 as the installation basis, and the inner support bracket 2 further forms the installation frame of the exterior structure 1.

[0046] In a preferred embodiment of the present application, the inner support bracket 2 includes the following support frames and support beams: a left front support frame 201, a right front support frame 202, a left rear support frame 203, a right rear support frame 204, a left beam 205 and a right beam 206.

[0047] The left front support frame 201 is fixed to the left side of the front end of the frame 3 and the front end of the upper frame 4 by a threaded fixing structure, and the right front support frame 202 is fixed to the right side of the front end of the frame 3 and the front end of the upper frame 4 by a threaded fixing structure; the left rear support frame 203 is fixed to the left side of the rear end of the frame 3 and the rear end of the upper frame 4 by a threaded fixing structure, and the right rear support frame 204 is fixed to the right side of the rear end of the frame 3 and the rear end of the upper frame 4 by a threaded fixing structure;

[0048] The left beam 205 is fixed at its two ends to the left front support frame 201 and the left rear support frame 203 by a threaded fixing structure, and the right beam 206 is fixed at its two ends to the right front support frame 202 and the right rear support frame 204 by a threaded fixing structure.

[0049] The above-mentioned threaded fixing structure can be implemented in various ways that can be selected in the prior art.

[0050] For the threaded fixing structure between each support frame and the vehicle frame 3 and the upper frame 4, a back-welded nut can be pre-set on the vehicle frame 3 or the upper frame 4, or an internal threaded hole can be opened, or a mounting hole with a nut can be placed, etc., to form a nut mounting hole. Correspondingly, a mounting hole (i.e., a bolt passing hole) is set on each of the above-mentioned support frames, so that the bolts pass through the mounting holes on the support frames and cooperate with the corresponding nut mounting holes on the frame 3 or the upper frame 4 to install each of the above-mentioned support frames on the vehicle frame 3 or the upper frame 4. Since the manufacturing and installation precision of the vehicle frame 3 or the upper frame 4 itself is not high, the diameter of the mounting hole on the support frame can be set larger to facilitate fine-tuning of the installation position according to the situation.

[0051] Correspondingly, the threaded fixing structure between the support beam and the support frame may include a nut mounting hole provided on the support frame, and a mounting hole (i.e., a bolt passing hole) provided on the support beam, and the connection is achieved by bolts.

[0052] During installation, adjustments can be made in the following manner: After assembling the inner support bracket 1, use a tape measure to measure the relative position dimensions of the inner support bracket 2 assembly and the selected characteristic points of the frame 3 and the upper frame 4 (such as the intersection of two beams of the frame and other points with obvious positional characteristics) to see if they meet the requirements, and at the same time measure the dimensions of the positioning points between all the components included in the inner support bracket 2 to ensure that the dimensions of the positioning points between the components meet the requirements. If it does not meet the requirements, the installation position can be adjusted by adding gaskets, or fine-tuning the positional relationship between the bolts and the mounting holes, or expanding the mounting holes when necessary, so that the indicators meet the set requirements. Through the above adjustments, the inner support bracket 2 can provide a fixed structure that meets the size requirements, so that when the exterior structural component 1 is installed on the inner support bracket 2, there will be no excessive deviation, avoiding appearance quality problems such as gaps and face differences.

[0053] In order to adjust the hole expansion when necessary, the mounting holes for the bolts to pass through included in the various threaded fixing structures, including the mounting holes on the various support frames of the internal support bracket 2, or the mounting holes set on each support beam, are all set at positions with sufficient redundant space, so that the hole diameter of the above-mentioned mounting holes can be expanded according to needs.

[0054] The exterior structure 1 is composed of several panels, and the preferred solution provided in this embodiment includes: a front upper panel 101, a front lower panel 102, a top cover 103, a left upper panel 104, a left lower panel 105, a rear upper panel 106, a rear lower panel 107, a right upper panel 108, and a right lower panel 109;

[0055] The front upper panel 101 and the front lower panel 102 are connected and fixed to the left front support frame 201 and the right front support frame 202 through a threaded fixing structure; the rear upper panel 106 and the rear lower panel 107 are connected and fixed to the left rear support frame 203 and the right rear support frame 204 through a threaded fixing structure; the left upper panel 104 and the left lower panel 105 are connected and fixed to the left front support frame 201 and the left rear support frame 203 through a threaded fixing structure; the right upper panel 108 and the right lower panel 109 are connected and fixed to the right front support frame 202 and the right rear support frame 204 through a threaded fixing structure; the top cover 103 is buckled at the top position of the left front support frame 201, the right front support frame 202, the left rear support frame 203, and the right rear support frame 204.

[0056] The above-mentioned threaded fixing structure is similar to the aforementioned threaded fixing structure, wherein the nut mounting hole is arranged on the support frame or support beam of the inner support bracket 2, and the surface of the plate of the exterior structure 1 is provided with a mounting hole for the bolt to pass through. In combination with the structure of the plate of the exterior structure 1, a specific arrangement scheme of the mounting hole in the threaded fixing structure is as follows: a flange is arranged on the edge of the exterior structure 1 to facilitate the interlocking of the various plates constituting the exterior structure; a plurality of (bolt) mounting holes concentrically penetrating both sides of the plate are arranged near the flange position, and the mounting holes include bolt process holes and bolt fixing holes, the aperture of the bolt process holes is larger than the bolt fixing holes, and the bolt process holes are located on the outer side of the plate; a circular plastic plug 110 is used to plug the bolt process holes on the panel to cover the bolt installation position and obtain a beautifying effect on the appearance. For the mounting holes on the plate of the above-mentioned exterior structure 1, the holes can also be enlarged as needed to adjust the installation position.

[0057] The above-mentioned body for low-speed vehicles provided by the present application provides a transitional installation reference through the setting of the inner support bracket 2, and the inner support bracket 2 can be flexibly adjusted during its installation process to have the required frame size and be located at the required installation position. Based on this, when installing each panel of the exterior structural member 1, combined with the fine-tuning space provided by the installation holes on the panel, a more accurate installation of the exterior structural member can be obtained, avoiding appearance quality problems such as gaps and face differences after these outer covering members are installed. The above-mentioned design significantly improves the flexibility and convenience of installation.

[0058] A second embodiment of the present application provides an unmanned low-speed vehicle.

[0059] The unmanned low-speed vehicle provided in the second embodiment of the present application has a body structure that adopts the body for the low-speed vehicle described in the first embodiment.

[0060] Since the vehicle body structure with the inner support bracket 2 is adopted, it is convenient to adjust the panel when installing the exterior structural member, which not only improves the aesthetics of the vehicle body, but also enhances the strength and rigidity of the vehicle body. In addition, the threaded fixing structure connecting the exterior structural member 1 and the inner support bracket 2 adopts a special design, including concentrically penetrating bolt process holes and bolt fixing holes on both sides of the flange. This design is not only convenient for installation and disassembly, but also can ensure the firmness and stability of the connection.

[0061] In general, the unmanned low-speed vehicle of the second embodiment of the present application achieves a perfect combination of stability, support and aesthetics by adopting an innovative body structure, meeting various practical needs within the precision requirement range of unmanned low-speed vehicles.

[0062] The technical solutions of the above two embodiments, through the setting of the inner support bracket, combined with the special design and combination of the exterior structural parts in the preferred solution, not only significantly improve the process convenience of body assembly, provide the aesthetics of the body, but also improve the stability and support of the body, and its structural improvement is very practical. At the same time, this design solution makes the assembly process highly flexible and convenient, and is easy to adjust and optimize according to actual needs.

[0063] Although the present application is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present application. Any technical personnel in this field may make possible changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

Claims

1. A body for a low-speed vehicle, comprising: The vehicle frame (3), the upper frame (4), and the exterior structural member (1) are characterized in that they also include an inner support bracket (2); The vehicle frame (3) is supported on wheels, and the upper frame (4) is fixedly mounted above the vehicle frame (3); The inner support bracket (2) comprises a preset support frame and a support beam, and is fixedly installed on the vehicle frame (3) and the upper frame (4) as a mounting base, thereby forming a mounting frame for the exterior structural member (1); The exterior structural component (1) is mounted on a mounting frame formed by the interior support bracket (2) via a fixing structure.

2. The body for a low-speed vehicle according to claim 1, characterized in that: The inner support frame (2) comprises: a left front support frame (201), a right front support frame (202), a left rear support frame (203), a right rear support frame (204), a left beam (205) and a right beam (206); The left front support frame (201) is fixed to the left side of the front end of the vehicle frame (3) and the front end of the upper frame (4) by means of a threaded fixing structure, and the right front support frame (202) is fixed to the right side of the front end of the vehicle frame (3) and the front end of the upper frame (4) by means of a threaded fixing structure; the left rear support frame (203) is fixed to the left side of the rear end of the vehicle frame (3) and the rear end of the upper frame (4) by means of a threaded fixing structure, and the right rear support frame (204) is fixed to the right side of the rear end of the vehicle frame (3) and the rear end of the upper frame (4) by means of a threaded fixing structure; The left beam (205) is fixed at its two ends to the left front support frame (201) and the left rear support frame (203) respectively through a threaded fixing structure, and the right beam (206) is fixed at its two ends to the right front support frame (202) and the right rear support frame (204) respectively through a threaded fixing structure.

3. The body for a low-speed vehicle according to claim 2, characterized in that: Each of the threaded fixing structures includes a mounting hole for the bolt to pass through, and the location where the mounting hole is arranged has sufficient redundant space so that the hole diameter of the mounting hole can be expanded according to demand.

4. The body for a low-speed vehicle according to claim 2, characterized in that: The exterior structural component (1) comprises: a front upper panel (101), a front lower panel (102), a top cover (103), a left upper panel (104), a left lower panel (105), a rear upper panel (106), a rear lower panel (107), a right upper panel (108), and a right lower panel (109); The front upper panel (101) and the front lower panel (102) are connected and fixed to the left front support frame (201) and the right front support frame (202) through a threaded fixing structure; the rear upper panel (106) and the rear lower panel (107) are connected and fixed to the left rear support frame (203) and the right rear support frame (204) through a threaded fixing structure; the left upper panel (104) and the left lower panel (105) are connected and fixed to the left front support frame (201) and the left rear support frame (203) through a threaded fixing structure; the right upper panel (108) and the right lower panel (109) are connected and fixed to the right front support frame (202) and the right rear support frame (204) through a threaded fixing structure; and the top cover (103) is buckled at the top positions of the left front support frame (201), the right front support frame (202), the left rear support frame (203) and the right rear support frame (204).

5. The body for a low-speed vehicle according to claim 4, characterized in that: Each component of the exterior structural component (1) is a plate component.

6. The body for a low-speed vehicle according to claim 5, characterized in that: The four sides of the plate are formed by flanging and bending process.

7. The body for a low-speed vehicle according to claim 6, characterized in that: The threaded fixing structure connecting the exterior structural member (1) and the inner support bracket (2) comprises a bolt process through hole and a bolt fixing hole which are concentrically passed through both sides of the plate near the flange position, the hole diameter of the bolt process through hole is larger than the bolt fixing hole, and the bolt process through hole is located on the outer side of the plate.

8. An unmanned low-speed vehicle, characterized in that: A vehicle body for a low-speed vehicle as claimed in any one of claims 1 to 7 is used.

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