Backstage components, subframes and engineering vehicles

Abstract

The utility model provides a rear-stage component, a sub-frame and an engineering vehicle. The rear-stage component includes: a rear-stage front plate, on which an operation hole is arranged; a rear-stage rear plate, which is arranged on the rear side of the rear-stage front plate along the forward direction of the engineering vehicle, and on which a rear-stage weight-reducing hole is arranged. The utility model arranges the rear-stage weight-reducing hole on the rear-stage rear plate, which can greatly reduce the weight of the rear-stage rear plate, thereby reducing the weight of the sub-frame as a whole and achieving better lightweighting.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering vehicles, in particular to a background component, a subframe and an engineering vehicle. Background Art

[0002] The subframe of an engineering vehicle includes a front panel and a back panel. The front panel and the back panel are used to support the mixing system, and the front, back and back panels are formed by four panels, namely the front panel, the back panel and two side panels. For the back panel, in the actual design process, it is usually necessary to set a square hole on the front panel of the back panel, and no hole is set on the back panel. The purpose of doing so is to maintain the internal lines and switches of the back panel through the square holes of the front panel of the back panel. The back panel needs to connect more structures, such as unloading brackets, etc., so through holes are usually not set on the back panel. For the current lightweight era, this type of back panel structure can no longer meet the current lightweight development. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art or related technology.

[0004] To this end, the first aspect of the utility model is to provide a background component.

[0005] A second aspect of the utility model provides a subframe.

[0006] The third aspect of the utility model provides an engineering vehicle.

[0007] The rear stage assembly provided by the utility model includes: a rear stage front plate, on which an operation hole is arranged; a rear stage rear plate, which is arranged on the rear side of the rear stage front plate along the forward direction of the engineering vehicle, and on which a rear stage weight reduction hole is arranged.

[0008] The backstage component provided by the utility model is provided with a backstage weight-reducing hole on the backstage rear plate, which can reduce the weight of the backstage rear plate, thereby making the backstage component more lightweight. However, in conventional technology, usually only a square hole is provided on the backstage front plate, and no weight-reducing hole is provided on the backstage rear plate, so the overall weight is relatively large, which is not conducive to lightweight development.

[0009] In some technical solutions, optionally, there are multiple rear end weight reduction holes, and the multiple rear end weight reduction holes are arranged along the width direction of the engineering vehicle. The rear end component also includes: a connecting section, a connecting section is formed between two adjacent weight reduction holes; a reinforcing rib, which is arranged between the rear end front plate and the rear end rear plate, connected to the connecting section, and is used to support the connecting section.

[0010] In this technical solution, since the rear plate of the back stage has been improved to be lightweight, the connecting section between the two rear plate weight-reducing holes will be subjected to greater pressure than before the improvement. In order to avoid the connecting section from breaking, a reinforcing rib is added. This ensures the strength of the connecting section, and enables the utility model to significantly reduce the weight of the rear plate of the back stage and achieve better lightweighting.

[0011] It should be noted here that the backstage rear plate of the present application is a backstage rear plate with backstage weight-reducing holes obtained by cutting a part of the weight-reducing plate from a non-porous plate, and the weight of the reinforcing ribs is much less than the weight of the weight-reducing plate that has been cut off. Optionally, the weight of the reinforcing ribs is one twentieth to one tenth of the weight of the weight-reducing plate, which can ensure the strength of the connecting section and achieve lightweight.

[0012] In some technical solutions, optionally, the backstage component also includes: a backstage top plate, connected to the top of the backstage front plate and the backstage rear plate; a backstage reinforcement plate, connected to the backstage top plate and located between the backstage front plate and the backstage rear plate; and reinforcement ribs, connected to the backstage reinforcement plate and the connecting section.

[0013] In this technical solution, the backstage component also includes a backstage top plate and a backstage reinforcing plate. The backstage top plate is connected to the top of the backstage front plate and the backstage rear plate to support the rear end of the mixing system of the engineering vehicle. The backstage reinforcing plate is connected to the backstage top plate and is located between the backstage front plate and the backstage rear plate to support the backstage top plate. The reinforcing ribs are connected to the backstage reinforcing plate and the connecting section. Conventionally, a backstage reinforcing plate is provided inside the backstage component to support the top plate. The utility model connects the reinforcing ribs to the backstage reinforcing plate and the connecting section, which is equivalent to the backstage reinforcing plate not only realizing the conventional function of supporting the backstage top plate, but also indirectly connecting to the connecting section to support the connecting section. In this way, the volume of the reinforcing ribs does not need to be too large to meet the lightweight development.

[0014] In some technical solutions, optionally, the reinforcement rib is a rectangular reinforcement rib, which is arranged on the connecting section along the height direction of the engineering vehicle, and the ratio of the height of the reinforcement rib to the height of the connecting section is 1 / 2 to 1, the ratio of the width of the reinforcement rib to the width of the connecting section is 1 / 6 to 1 / 2, and the ratio of the thickness of the reinforcement rib to the thickness of the connecting section is 1 / 3 to 1.

[0015] In some technical solutions, optionally, the backstage reinforcement plate includes a C-shaped reinforcement plate, and the opening of the C-shaped reinforcement plate is away from the backstage top plate.

[0016] In this technical solution, the backstage reinforcement plate inside the backstage component is adjusted to a C-shaped structure, which has a better reinforcement effect. In addition, compared with the conventional combination of multiple reinforcement plates, it has a better lightweight effect.

[0017] In some technical solutions, optionally, the backstage component also includes a backstage top plate, which is connected to the top of the backstage front plate and the backstage rear plate; wherein the operating hole includes a U-shaped operating hole, and the opening of the U-shaped operating hole extends to the backstage top plate.

[0018] In this technical solution, in conventional technology, the operating holes of the backstage front plate are all square, which is not conducive to lightweighting. The utility model changes it into a U-shaped operating hole, and the opening of the U-shaped operating hole extends to the backstage top plate, which has a better lightweight effect. In addition, it is easier for users to maintain the lines, switches, etc. inside the backstage through the U-shaped operating hole.

[0019] In some technical schemes, optionally, the background component also includes: a background base, which is arranged at the bottom of the background rear plate; a corner reinforcement plate, which is arranged at the connection between the background base and the background rear plate; wherein the corner reinforcement plate includes a corner substrate, and both ends of the corner substrate are bent in the same direction to form a bending portion, and the two bending portions are connected to the background base and the background rear plate.

[0020] In this technical solution, the backstage assembly also includes a backstage base and a corner reinforcement plate, the backstage base is arranged at the bottom of the backstage rear plate; the corner reinforcement plate is arranged at the connection between the backstage base and the backstage rear plate; wherein the corner reinforcement plate includes a corner base plate, both ends of the corner base plate are bent in the same direction to form a bending portion, and the two bending portions are connected to the backstage base and the backstage rear plate. The utility model improves the corner reinforcement plate, and the integrated corner reinforcement plate formed by bending ensures light weight. Since it is bent into two bending portions, the two bending portions can support and connect the backstage base and the backstage rear plate, so that light weight can be ensured while also ensuring support strength.

[0021] A second aspect of the present invention provides a sub-frame, and the sub-frame provided by the present invention comprises: a backstage component as in any technical solution of the first aspect of the present invention.

[0022] In some technical solutions, optionally, the sub-frame also includes an unloading bracket connected to the rear plate, and the unloading bracket includes two identical bracket plates, one ends of the two bracket plates are connected, and the other ends of the two bracket plates are far away from each other, so that the two bracket plates can form an angle of a preset degree, and the preset degree is greater than 0 degrees.

[0023] In this technical solution, the unloading bracket with a large span structure has a simpler structure, is light in weight, and has better stress resistance. The two bracket plates of a conventional unloading bracket are usually buckled together. The welding position between the unloading bracket of this structure and the rear plate is prone to cracking, has a poor stress state, and is heavy in weight.

[0024] In some technical solutions, optionally, the preset degree is greater than or equal to 30 degrees and less than or equal to 70 degrees.

[0025] In some technical solutions, optionally, the sub-frame also includes a front desk component, which includes: a front desk base; a front desk top plate, which is arranged above the front desk base; a plurality of front desk support plates, which are arranged between the front desk base and the front desk top plate, and the plurality of front desk support plates can form a prism structure, and each front desk support plate includes a front desk weight reduction hole, and the front desk weight reduction hole can extend to the front desk base.

[0026] In this technical solution, the subframe also includes a front stage assembly, which includes a front stage base, a front stage top plate, and a plurality of front stage support plates. The front stage top plate is disposed above the front stage base to support the front end of the mixing system of the engineering vehicle. The plurality of front stage support plates are disposed between the front stage base and the front stage top plate, and the plurality of front stage support plates can form a prism structure. Each front stage support plate includes a front stage weight reduction hole, and the front stage weight reduction hole can extend to the front stage base. The conventional weight reduction holes on the front stage support plates are all closed circular holes or closed waist-shaped holes, which are not conducive to the development of lightweight. The utility model extends all weight reduction holes to the front stage base, which can further reduce the weight of the front stage assembly.

[0027] In some technical solutions, optionally, multiple front desk support plates include a front desk front plate, a front desk rear plate and two front desk side plates, and the front desk front plate, the front desk rear plate and the two front desk side plates are all provided with U-shaped front desk weight reduction holes, and the front desk weight reduction holes are all extended to the front desk base.

[0028] In some technical solutions, optionally, the subframe also includes: a front reinforcement plate, connected to the front top plate and located in the space surrounded by multiple front support plates, the front reinforcement plate includes a front reinforcement plate weight reduction hole, the front reinforcement plate weight reduction hole includes a U-shaped hole, the opening of the U-shaped hole is away from the front top plate and extends to the front base.

[0029] In this technical solution, the front desk reinforcement plate of the utility model simplifies the structure of the reinforcement plate, has a good supporting effect on the front desk top plate, and is in line with lightweight development.

[0030] The third aspect of the utility model provides an engineering vehicle. The engineering vehicle provided by the utility model includes a backstage component as in any technical solution of the first aspect of the utility model, or includes a subframe as in any technical solution of the second aspect of the utility model.

[0031] In some technical solutions, optionally, the engineering vehicle includes a mixer truck.

[0032] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 A schematic structural diagram of a front desk reinforcement plate of a front desk assembly before improvement is shown;

[0035] Figure 2 A schematic structural diagram of the front panel of the front desk assembly before improvement is shown;

[0036] Figure 3 A schematic structural diagram of a front desk side panel of a front desk assembly before improvement is shown;

[0037] Figure 4 A schematic diagram showing the structure of the backstage front panel of the backstage component before improvement is shown;

[0038] Figure 5 A schematic diagram showing the structure of the backstage back panel of the backstage component before improvement is shown;

[0039] Figure 6 A schematic diagram showing the structure of a backstage reinforcement plate of a backstage component before improvement is shown;

[0040] Figure 7 It shows a schematic structural diagram of the corner reinforcement plate at the connection between the backstage rear plate and the backstage base before improvement;

[0041] Figure 8 The structural schematic diagram of the unloading bracket before improvement is shown;

[0042] Fig. 9 It shows one of the structural schematic diagrams after the backstage component and the unloading bracket are assembled in one embodiment of the utility model;

[0043] Fig.10 It shows a schematic structural diagram of a backstage rear plate of an embodiment of the utility model;

[0044] Fig.11 One of the structural schematic diagrams of the background components of an embodiment of the utility model is shown;

[0045] Fig.12 It shows a schematic diagram of the structure of the background enhanced version of an embodiment of the utility model;

[0046] Fig.13 A second structural diagram of a background component of an embodiment of the utility model is shown;

[0047] Fig.14 A schematic structural diagram of a subframe according to an embodiment of the utility model is shown;

[0048] Fig.15A schematic diagram of the structure of a discharge bracket according to an embodiment of the utility model is shown;

[0049] Fig.16 A structural diagram of a front-end component of an embodiment of the utility model is shown;

[0050] Fig.17 A schematic structural diagram of a front desk reinforcement plate of a front desk assembly according to an embodiment of the utility model is shown;

[0051] Fig.18 A schematic structural diagram of a front desk front plate of a front desk assembly according to an embodiment of the utility model is shown;

[0052] Fig.19 A schematic structural diagram of a front desk side panel of a front desk assembly according to an embodiment of the utility model is shown;

[0053] Fig. 20 The second structural schematic diagram shows the backstage component and the unloading bracket after being assembled in one embodiment of the utility model;

[0054] Fig.21 A front view of a front desk assembly according to an embodiment of the present invention is shown;

[0055] Fig. 22 A third structural diagram of a background component of an embodiment of the utility model is shown;

[0056] Fig.23 A block diagram of an engineering vehicle according to an embodiment of the utility model is shown.

[0057] in, Figures 1 to 8 The corresponding relationship between the reference numerals and component names in the figure is:

[0058] 1221' backstage front plate, 1222' operation hole, 1223' backstage rear plate, 1228' backstage reinforcement plate, 1230' corner reinforcement plate, 124' unloading bracket, 1269' front stage reinforcement plate, 12662' front stage front plate, 12664' front stage side plate.

[0059] in, Figures 9 to 23 The corresponding relationship between the reference numerals and component names in the figure is:

[0060] 1 engineering vehicle, 12 subframe, 122 backstage assembly, 1221 backstage front plate, 1222 operation hole, 1223 backstage rear plate, 1224 backstage weight reduction hole, 1225 connecting section, 1226 reinforcement rib, 1227 backstage top plate, 1228 backstage reinforcement plate, 1229 backstage base, 1230 corner reinforcement plate, 12302 corner base plate, 12304 bending part, 124 unloading bracket, 1242 bracket plate, 126 front stage assembly, 1262 front stage base, 1264 front stage top plate, 1265 front stage reinforcement plate weight reduction hole, 1266 front stage support plate, 12662 front stage front plate, 12664 front stage side plate, 1268 front stage weight reduction hole, 1269 front stage reinforcement plate. DETAILED DESCRIPTION

[0061] In order to more clearly understand the above aspects, features and advantages of this embodiment, the embodiment is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of this application and the features in the embodiments can be combined with each other without conflict.

[0062] In the following description, many specific details are set forth to facilitate a full understanding of the present embodiment. However, the present embodiment may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present embodiment is not limited to the specific embodiments disclosed below.

[0063] It is important to understand that, in the context of energy conservation and emission reduction, lightweighting of engineering vehicles is gaining more and more attention from customers. As the main component of the engineering vehicle upper body, the subframe has a great impact on the weight of the whole vehicle. However, due to the large transport load of engineering vehicles, the subframe, as an important connecting component between the upper body and the chassis, has a complex stress situation. The designs of various manufacturers are relatively conservative, and their lightweight degree is relatively low. The subframes of engineering vehicles of existing manufacturers have problems such as complex structure, poor manufacturing processability, and low lightweight degree, which seriously restrict the lightweighting of the whole vehicle. In addition, the structural design is unreasonable, and local strength redundancy and local strength deficiency coexist. The lightweight degree of engineering vehicle subframes on the market is relatively low.

[0064] like Fig. 9 , Fig.10 and Fig.11 As shown, the rear stage component 122 provided by the utility model includes a rear stage front plate 1221, on which an operation hole 1222 is provided; along the forward direction of the engineering vehicle 1, a rear stage rear plate 1223 is arranged on the rear side of the rear stage front plate 1221, on which a rear stage weight reduction hole 1224 is provided.

[0065] The background component 122 provided by the utility model is provided with a background weight reduction hole 1224 on the background rear plate 1223, which can reduce the weight of the background rear plate 1223, thereby making the background component 122 more lightweight. In conventional technology, usually only a square hole is provided on the background front plate, and no background weight reduction hole is provided on the background rear plate, so the overall weight is relatively large, which is not conducive to lightweight development.

[0066] In some technical solutions, optionally, there are multiple rear end weight reduction holes 1224, and the multiple rear end weight reduction holes 1224 are arranged along the width direction of the engineering vehicle 1, and a connecting section 1225 is formed between two adjacent weight reduction holes; the reinforcing rib 1226 is arranged between the rear end front plate 1221 and the rear end rear plate 1223, and is connected to the connecting section 1225 for supporting the connecting section 1225.

[0067] In this embodiment, since the rear plate 1223 is lightened, the connecting section 1225 between the two rear weight-reducing holes 1224 will be subjected to greater pressure than before the improvement. In order to avoid the position of the connecting section 1225 from breaking, a reinforcing rib 1226 is added to ensure the strength of the connecting section 1225, so that the utility model can be compared with the above Figure 5 As for the rear rear plate 1223' shown in the figure, the weight of the rear rear plate 1223' is greatly reduced, achieving better lightweight.

[0068] It should be noted here that the backstage rear plate 1223 of the present application is the backstage rear plate 1223 with backstage weight-reducing holes 1224 of the present application obtained by cutting a part of the weight-reducing plate from a non-porous plate, and the weight of the reinforcing ribs 1226 is much less than the weight of the weight-reducing plate that has been cut off. Optionally, the weight of the reinforcing ribs 1226 is one twentieth to one tenth of the weight of the weight-reducing plate, which can ensure the strength of the connecting section 1225 and achieve lightweight.

[0069] In some embodiments, optionally, the thickness of the connecting section 1225 is the first thickness, and the thickness of the rest of the back panel 1223 is the second thickness, and the first thickness is greater than the second thickness. Optionally, / the second thickness is greater than or equal to 0.2, and less than or equal to 0.5. That is, the thickness of the connecting section 1225 is slightly greater than the thickness of the rest of the back panel 1223, so that the strength of the connecting section 1225 can be ensured while the overall weight of the back panel 1223 is not too large, ensuring lightweight. If the first thickness is greater than the second thickness, then the back panel 1223 is cast.

[0070] In some embodiments, optionally, Fig.13As shown, the backstage component 122 also includes a backstage top plate 1227, which is connected to the top of the backstage front plate 1221 and the backstage rear plate 1223; a backstage reinforcement plate 1228, which is connected to the backstage top plate 1227 and is located between the backstage front plate 1221 and the backstage rear plate 1223; and a reinforcement rib 1226, which is connected to the backstage reinforcement plate 1228 and the connecting section 1225.

[0071] In this embodiment, the backstage component 122 also includes a backstage top plate 1227 and a backstage reinforcing plate 1228. The backstage top plate 1227 is connected to the top of the backstage front plate 1221 and the backstage rear plate 1223, and is used to support the rear end of the mixing system of the engineering vehicle 1. The backstage reinforcing plate 1228 is connected to the backstage top plate 1227 and is located between the backstage front plate 1221 and the backstage rear plate 1223, and is used to support the backstage top plate 1227. The reinforcing ribs 1226 are connected to the backstage reinforcing plate 1228 and the connecting section 1225. Conventionally, a backstage reinforcement plate is provided inside the backstage components to support the backstage top plate. The utility model connects the reinforcement rib 1226 with the backstage reinforcement plate 1228 and the connecting section 1225. In this way, the backstage reinforcement plate 1228 can not only realize the conventional function of supporting the backstage top plate 1227, but also can be indirectly connected with the connecting section 1225 to support the connecting section 1225. In this way, the volume of the reinforcement rib 1226 does not need to be too large, so as to meet the lightweight development requirements.

[0072] In some embodiments, optionally, the reinforcement rib 1226 is a rectangular reinforcement rib, which is arranged on the connecting section 1225 along the height direction of the engineering vehicle 1, and the ratio of the height of the reinforcement rib 1226 to the height of the connecting section 1225 is 1 / 2 to 1, the ratio of the width of the reinforcement rib 1226 to the width of the connecting section 1225 is 1 / 6 to 1 / 2, and the ratio of the thickness of the reinforcement rib 1226 to the thickness of the connecting section 1225 is 1 / 3 to 1.

[0073] In some embodiments, optionally, the rear end reinforcement plate 1228 includes a C-shaped reinforcement plate, and the opening of the C-shaped reinforcement plate is away from the rear end top plate 1227.

[0074] In this embodiment, the backstage reinforcement plate 1228 inside the backstage component 122 is adjusted to a C-shaped structure, such as Fig.12 As shown, the C-type structure has a better strengthening effect. Figure 6 The rear reinforcement plate 1228' shown has a better lightweight effect.

[0075] In some embodiments, the backstage component 122 may further include a backstage top plate 1227, which is connected to the top of the backstage front plate 1221 and the backstage rear plate 1223; Fig.13 As shown, the operating hole 1222 includes a U-shaped operating hole 1222 , and the opening of the U-shaped operating hole 1222 extends to the rear top plate 1227 .

[0076] Conventional techniques, such as Figure 4 As shown, the operating holes 1222' of the backstage front plate 1221' are all square, which is not conducive to lightweight. The utility model changes it into a U-shaped operating hole 1222, and the opening of the U-shaped operating hole 1222 extends to the backstage top plate 1227, which has a better lightweight effect. In addition, it is easier for users to maintain the lines, switches, etc. inside the backstage through the U-shaped operating hole 1222.

[0077] In some embodiments, optionally, Fig.11 , Fig.13 and Fig. 22 As shown, the background component 122 also includes: a background base 1229, which is arranged at the bottom of the background rear plate 1223; a corner reinforcement plate 1230, which is arranged at the connection between the background base 1229 and the background rear plate 1223; wherein, the corner reinforcement plate 1230 includes a corner substrate 12302, and both ends of the corner substrate 12302 are bent in the same direction to form a bending portion 12304, and the two bending portions 12304 are both connected to the background base 1229 and the background rear plate 1223.

[0078] In this embodiment, the backstage component 122 further includes a backstage base 1229 and a corner reinforcement plate 1230, wherein the backstage base 1229 is arranged at the bottom of the backstage rear plate 1223; the corner reinforcement plate 1230 is arranged at the connection between the backstage base 1229 and the backstage rear plate 1223; wherein the corner reinforcement plate 1230 includes a corner substrate 12302, wherein both ends of the corner substrate 12302 are bent in the same direction to form a bending portion 12304, and both bending portions 12304 are connected to the backstage base 1229 and the backstage rear plate 1223. The utility model improves the corner reinforcement plate 1230, and the integrated corner reinforcement plate 1230 formed by bending ensures light weight, and since it is bent into two bending portions 12304, both bending portions 12304 can support and connect the backstage base 1229 and the backstage rear plate 1223, thereby ensuring light weight and supporting strength. The conventional corner reinforcement plate 1230', such as Figure 7 As shown, the corner reinforcement plate 1230' is formed by welding two plates, which is not only complicated in assembly, but also has poor lightweight effect and poor supporting effect.

[0079] like Fig.14 As shown, the second aspect of the present invention provides a sub-frame 12 , and the sub-frame 12 provided by the present invention includes: a background component 122 as in any one of the embodiments of the first aspect of the present invention.

[0080] In some embodiments, optionally, Fig.15 and Fig. 20As shown, the sub-frame 12 also includes: an unloading bracket 124, which is connected to the rear plate 1223, and the unloading bracket 124 includes two identical bracket plates 1242, one ends of the two bracket plates 1242 are connected, and the other ends of the two bracket plates 1242 are far away from each other, so that the two bracket plates 1242 can form an angle of a preset degree, and the preset degree is greater than 0 degree.

[0081] In this embodiment, the unloading bracket 124 with a large span structure has a simpler structure, a lighter weight, and better stress resistance. Figure 8 As shown, a conventional unloading bracket 124' is shown. The welding position between the unloading bracket 124' and the rear plate 1223' of this structure is prone to cracking, the stress state is poor, and the weight itself is heavy.

[0082] In some embodiments, optionally, the preset degree is greater than or equal to 30 degrees and less than or equal to 70 degrees.

[0083] In some embodiments, optionally, Fig.16 and Fig.21 As shown, the subframe 12 also includes a front desk component 126, which includes: a front desk base 1262; a front desk top plate 1264, which is arranged above the front desk base 1262; a plurality of front desk support plates 1266, which are arranged between the front desk base 1262 and the front desk top plate 1264, and the plurality of front desk support plates 1266 can form a prism structure, and each front desk support plate 1266 includes a front desk weight reduction hole 1268, and the front desk weight reduction hole 1268 can extend to the front desk base 1262.

[0084] In this embodiment, the subframe 12 also includes a front assembly 126, which includes a front base 1262, a front top plate 1264 and a plurality of front support plates 1266. The front top plate 1264 is arranged above the front base 1262 to support the front end of the mixing system of the engineering vehicle 1. The plurality of front support plates 1266 are arranged between the front base 1262 and the front top plate 1264, and the plurality of front support plates 1266 can form a prism structure. Each front support plate 1266 includes a front weight reduction hole 1268, and the front weight reduction hole 1268 can extend to the front base 1262. The conventional weight reduction holes on the front support plate are all closed circular holes or closed waist-shaped holes, which is not conducive to the development of lightweight. The utility model extends all weight reduction holes to the front base 1262, which can further reduce the weight of the front assembly 126. The utility model innovates the structure of the front and back ends through topological optimization to achieve quality improvement and weight reduction, and the overall weight reduction exceeds 10%.

[0085] In some embodiments, optionally, Fig.16 , Fig.17 , Fig.18 and Fig.19As shown, the plurality of front desk support plates 1266 include a front desk front plate 12662, a front desk rear plate and two front desk side plates 12664, and the front desk front plate 12662, the front desk rear plate and the two front desk side plates 12664 are all provided with U-shaped front desk weight reduction holes 1268, and the front desk weight reduction holes 1268 are all extended to the front desk base 1262, relative to the Figure 2 The front panel 12662' shown and Figure 3 The front desk side panel 12664' shown makes the front desk assembly 126 of the present invention more lightweight.

[0086] In some embodiments, optionally, Fig.17 As shown, the subframe 12 also includes a front reinforcement plate 1269, which is connected to the front top plate 1264 and is located in a space surrounded by multiple front support plates 1266. The front reinforcement plate 1269 includes a front reinforcement plate weight reduction hole 1265. The front reinforcement plate weight reduction hole 1265 includes a U-shaped hole. The opening of the U-shaped hole is away from the front top plate 1264 and extends to the front base 1262.

[0087] In this embodiment, the front reinforcement plate 1269 of the present invention is Figure 1 As for the front desk reinforcing plate 1269' shown, the structure of the reinforcing plate is simplified, which has a better supporting effect on the front desk top plate 1264 and conforms to the lightweight development.

[0088] The sub-frame 12 of the utility model uses topological analysis to optimize the overall structure of the sub-frame front-end component 126, the back-end component 122, and the unloading bracket 124, increases materials for weak parts, reduces materials for redundant strength parts, and achieves overall lightweighting while improving the strength of the overall sub-frame 12; in addition, high-strength steel plates are used in combination with topological optimization analysis to improve the front side panels 12664, the front reinforcement panels inside the front desk, and the back reinforcement panels 1228 inside the back desk, and lightweighting is achieved while increasing the service life; the lightweight sub-frame 12 of the utility model has an open structure, which is conducive to processing and manufacturing, and especially solves the problem of narrow internal space and difficult welding of traditional sub-frames.

[0089] like Fig.23 As shown, the third aspect of the utility model provides an engineering vehicle 1, and the engineering vehicle 1 provided by the utility model includes a background component 122 as in any embodiment of the first aspect of the utility model, or includes a subframe 12 as in any embodiment of the second aspect of the utility model.

[0090] In some embodiments, optionally, the construction vehicle comprises a mixer truck.

[0091] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0092] In the description of the present invention, the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0093] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A background component, characterized in that: Applied to engineering vehicles, the background components include: A rear front plate, wherein an operation hole is arranged on the rear front plate; A rear rear plate is arranged on the rear side of the rear front plate along the forward direction of the engineering vehicle, and rear weight reduction holes are arranged on the rear rear plate.

2. The background component according to claim 1, characterized in that: The number of the rear-stage weight-reducing holes is multiple, and the multiple rear-stage weight-reducing holes are arranged along the width direction of the engineering vehicle. The rear-stage component also includes: A connecting section, formed between two adjacent rear-stage weight-reducing holes; A reinforcing rib is provided between the rear front plate and the rear rear plate, connected to the connecting section, and used for supporting the connecting section.

3. The background component according to claim 2, characterized in that: Also includes: A rear stage top plate connected to the tops of the rear stage front plate and the rear stage rear plate; A rear stage reinforcement plate, connected to the rear stage top plate and located between the rear stage front plate and the rear stage rear plate; The reinforcing rib is connected to the rear reinforcing plate and the connecting section.

4. The background component according to claim 3, characterized in that: The rear end reinforcement plate comprises a C-shaped reinforcement plate, and an opening of the C-shaped reinforcement plate is away from the rear end top plate.

5. The background component according to claim 1, characterized in that: Also includes: A rear stage top plate, the rear stage top plate being connected to the tops of the rear stage front plate and the rear stage rear plate; Wherein, the operating hole comprises a U-shaped operating hole, and the opening of the U-shaped operating hole extends to the rear top plate.

6. The background component according to claim 1, characterized in that: Also includes: A backstage base, which is arranged at the bottom of the backstage rear plate; A corner reinforcement plate, arranged at the connection between the backstage base and the backstage rear plate; Wherein, the corner reinforcement plate includes a corner base plate, both ends of the corner base plate are bent in the same direction to form a bent portion, and the two bent portions are both connected to the backstage base and the backstage rear plate.

7. A subframe, characterized in that: include: A backend component as claimed in any one of claims 1 to 6.

8. The subframe according to claim 7, characterized in that: Also includes: The unloading bracket is connected to the rear plate, and the unloading bracket includes two identical bracket plates, one ends of the two bracket plates are connected, and the other ends of the two bracket plates are far away from each other, so that the two bracket plates can form an angle of a preset degree, and the preset degree is greater than 0 degree.

9. The subframe according to claim 7, characterized in that: Also included is a front-end component, which includes: Front desk base; A front desk top plate, arranged above the front desk base; A plurality of front desk support plates are arranged between the front desk base and the front desk top plate, and the plurality of the front desk support plates can form a prism structure, and each of the front desk support plates includes a front desk weight reduction hole, and the front desk weight reduction hole can extend to the front desk base.

10. The subframe according to claim 9, characterized in that: Also includes: The front desk reinforcement plate is connected to the front desk top plate and is located in the space surrounded by the plurality of the front desk support plates. The front desk reinforcement plate includes a front desk reinforcement plate weight reduction hole. The front desk reinforcement plate weight reduction hole includes a U-shaped hole. The opening of the U-shaped hole is away from the front desk top plate and extends to the front desk base.

11. An engineering vehicle, characterized in that: include: A backstage assembly as claimed in any one of claims 1 to 6, or comprising a subframe as claimed in any one of claims 7 to 10.

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