Mixing semi-trailer frame and mixing semi-trailer

Abstract

The utility model provides a kind of stirring semitrailer frame and stirring semitrailer, and stirring semitrailer frame includes frame body, front desk and back desk, front desk, back desk and frame body are set as independent structure, front desk and back desk are detachably set on frame body, so that when long-distance delivery, front desk and back desk and frame body can be detached into independent structure, so as to realize that frame body and front desk and back desk are placed on carrier respectively, facilitate stirring semitrailer frame to be stacked when transporting, and the space utilization of carrier can be improved, the delivery efficiency is improved, and transportation cost is reduced. Back desk includes back desk connecting plate, and front desk includes front desk connecting plate, by the setting of back desk connecting plate and front desk and connecting plate, so that in the case where the stress intensity of stirring semitrailer frame as a whole is guaranteed, the crossbeam of frame body can be designed smaller, and the number of crossbeam can be designed less, reduce the weight of frame body, facilitate handling.

Description

Technical Field

[0001] This utility model relates to the field of mixer truck technology, and in particular to a mixer semi-trailer frame and mixer semi-trailer. Background Technology

[0002] Currently, the chassis of mixer semi-trailers adopts a welded front and rear design. Although the overall strength is good, the large size of the chassis results in low space utilization of containers and other vehicles during long-distance shipments, sometimes requiring the entire truck to be shipped, leading to high shipping costs and making it difficult to expand the coverage of production sites and promote product exports. Utility Model Content

[0003] The purpose of this invention is to solve the problem of low delivery efficiency and high cost in long-distance transportation caused by obstruction at the front and rear ends of the existing mixer semi-trailer frame.

[0004] To solve the above-mentioned technical problems, this utility model provides a mixer semi-trailer frame, including a frame body, a front end, and a rear end. The frame body includes two main beams and a crossbeam, with the two main beams spaced apart and the crossbeam positioned between the two main beams and fixedly connected to them. The rear end is an independent structure from the frame body, located at the rear end of the main beams. The rear end includes a rear end platform and a rear end connecting plate, which is mounted on the rear end platform and detachably connected to the main beams and the crossbeams, connecting the rear end platform to the frame body via the rear end connecting plate. The front end is an independent structure from the frame body, located at the front end of the main beams. The front end includes a front end platform and a front end connecting plate, which is mounted on the front end platform and detachably connected to the main beams and the crossbeams, connecting the front end platform to the frame body via the front end connecting plate.

[0005] In some embodiments of this application, the thickness of the back-end connection plate is greater than the wall thickness of the back-end platform.

[0006] In some embodiments of this application, the crossbeam includes a back-end connecting crossbeam connected to the rear end of the main beam; the back-end connecting plate is flat, and the two sides of the width of the back-end connecting plate are respectively fixedly connected to the two main beams, and the rear side of the back-end connecting plate is fixedly connected to the back-end connecting crossbeam.

[0007] In some embodiments of this application, the backstage connecting plate includes a support portion and a dovetail portion. The dovetail portion is provided on both sides of the front end of the support portion. The dovetail portion extends toward the front end. Both sides of the support portion in the width direction and the dovetail portion are connected to the main beam. The rear end of the support portion is connected to the backstage connecting crossbeam. The platform of the backstage is set on the support portion.

[0008] In some embodiments of this application, the support portion and the dovetail portion are an integral structure; the dovetail portion and the support portion have a smooth transition.

[0009] In some embodiments of this application, the thickness of the front panel connecting plate is greater than the wall thickness of the front panel body.

[0010] In some embodiments of this application, the crossbeam includes a traction disc crossbeam connected to the front end of the main beam; the front-end connecting plate is flat, and the two sides of the width of the front-end connecting plate are fixedly connected to the two main beams respectively; the rear-end connecting plate is fixedly connected to the traction disc crossbeam on both the front and rear sides.

[0011] In some embodiments of this application, the traction disc crossbeam includes a first crossbeam and a second crossbeam, the first crossbeam and the second crossbeam being spaced apart along the front-rear direction of the main beam, the first crossbeam and the second crossbeam corresponding one-to-one with the front and rear sides of the front-end connecting plate; the front side of the front-end connecting plate is connected to the first crossbeam, and the rear side of the front-end connecting plate is connected to the second crossbeam.

[0012] In some embodiments of this application, an installation space is formed between the two main beams, the rear connecting beam, and the traction disc beam, and the installation space is used to install an external electric drive system.

[0013] A mixer semi-trailer includes a mixing drum and a mixer semi-trailer frame, wherein the mixing drum is connected to the front and rear of the mixer semi-trailer frame.

[0014] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: The mixer semi-trailer frame of this application includes a frame body, a front end, and a rear end. The front end and rear end are set as independent structures from the frame body. The front end and rear end are detachably mounted on the frame body, so that during long-distance transportation, the front end and rear end can be disassembled into independent structures from the frame body. This allows the frame body and the front and rear ends to be placed on the vehicle separately, which facilitates the stacking of the mixer semi-trailer frame during transportation, improves the space utilization of the vehicle, increases shipping efficiency, and reduces transportation costs.

[0015] The back end includes the back end platform and the back end connecting plate. The back end platform is detachably connected to the main beams and crossbeams of the chassis body via the back end connecting plate. The front end includes the front end platform and the front end connecting plate. The front end platform is also detachably connected to the main beams and crossbeams of the chassis body via the front end connecting plate. This connection between the back end connecting plate and the front end connecting plate and the chassis body improves the load-bearing strength of the chassis body. In other words, by using the back end connecting plate and the front end connecting plate, while ensuring the overall load-bearing strength of the mixer semi-trailer chassis, the size of the crossbeams of the chassis body can be designed to be smaller, and the number of crossbeams can be reduced, thus reducing the weight of the chassis body and facilitating handling. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the mixer semi-trailer frame in one embodiment.

[0017] Figure 2 yes Figure 1 The diagram shows a top view of the chassis of a mixer semi-trailer.

[0018] Figure 3 This is a schematic diagram of the frame body in one embodiment.

[0019] Figure 4 This is an exploded structural diagram of the vehicle frame body in one embodiment.

[0020] Figure 5 This is a schematic diagram of the decomposed structure of the backend in one embodiment.

[0021] Figure 6 This is a schematic diagram of the exploded structure of the front end in one embodiment.

[0022] The annotations in the attached figures are explained as follows: 1-Chassis body; 11-Main beam; 111-Web plate; 112-Upper wing plate; 1121-First connecting hole; 1122-Second connecting hole; 113-Lower wing plate; 114-First main beam section; 115-Second main beam section; 116-Sloping surface; 12-Crossbeam; 121-Rear-end connecting crossbeam; 1211-First load-bearing part; 1212-First reinforcing part; 1213-Third connecting hole; 122-Traction disc crossbeam; 1221-First crossbeam; 1222-Second crossbeam; 1223-Second load-bearing part; 1224-Second reinforcing part; 1225-Fourth connecting hole; 1226-First weight-reduction hole; 2-Backstage; 21-Backstage platform; 211-Backstage side panel; 212-Backstage top panel; 22-Backstage connecting plate; 221-Support section; 222-Dovetail section; 2211-Second weight reduction hole; 223-First screw hole; 3-Front desk; 31-Front desk body; 311-Front desk side panel; 312-Front desk top panel; 32-Front desk connecting plate; 321-Second weight reduction hole; 322-Second screw hole. Detailed Implementation

[0023] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0024] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the positions of these elements change, these directional indications also change accordingly.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] A mixer semi-trailer includes a tractor unit, a mixing drum, and a mixer semi-trailer frame. The front end of the mixer semi-trailer frame is connected to the tractor unit, and the two ends of the mixing drum are respectively connected to the front and rear ends of the mixer semi-trailer frame, thereby enabling the mixer semi-trailer frame to support the mixing drum.

[0027] See Figure 1 and Figure 2 The concrete mixer semi-trailer frame includes a frame body 1, a rear end 2, and a front end 3. The rear end 2 and the front end 3 are independent structures from the frame body 1. The rear end 2 is detachably located at the rear end of the frame body 1, and the front end 3 is detachably located at the front end of the frame body 1. This allows the front end 3 and the rear end 2 to be disassembled into independent structures for long-distance transport, enabling the frame body 1, front end 3, and rear end 2 to be placed separately on the vehicle. This reduces the overall height of the frame by more than 50%, significantly improving the utilization of packaging space. It also facilitates the stacking of the concrete mixer semi-trailer frame during transport, improves the space utilization of the vehicle, increases shipping efficiency, and reduces transportation costs.

[0028] The front platform 3, the rear platform 2 and the frame body 1 are disassembled into independent structures, so that there is no need to set up a production line for assembly, welding and other work between the front platform 3, the rear platform 2 and the frame body 1, which reduces the cost of production equipment. Moreover, the independently arranged front platform 3, rear platform 2 and frame body 1 are all small in volume, the construction difficulty of production equipment is low, and the cost of production equipment can also be reduced.

[0029] Refer to Figure 3 and Figure 4 , the frame body 1 comprises two longitudinal beams 11 and a cross beam 12. The two longitudinal beams 11 are arranged at intervals, and the cross beam 12 is arranged between the two longitudinal beams 11 and is fixedly connected with the two longitudinal beams 11, so that the longitudinal beams 11 and the cross beam 12 are fixed into an integral structure. The fixed connection between the longitudinal beam 11 and the cross beam 12 is preferably welding.

[0030] The length direction of the longitudinal beams 11 is consistent with the front-rear direction of the semitrailer, and the two longitudinal beams 11 are arranged at intervals in the width direction of the semitrailer. The length direction of the cross beam 12 is consistent with the width direction of the semitrailer. A plurality of cross beams 12 are distributed along the length direction of the longitudinal beams 11, so that the frame is more uniformly stressed at each position, and the stability of the frame is improved.

[0031] The longitudinal beam 11 comprises a web 111, an upper flange plate 112 arranged on the top surface of the web 111, and a lower flange plate 113 arranged on the bottom surface of the web 111. The middle part of the upper flange plate 112 is connected with the web 111, and the middle part of the lower flange plate 113 is connected with the web 111, so that the upper flange plate 112, the web 111 and the lower flange plate 113 form an I-shaped steel structure, which makes the longitudinal beam 11 have high stress strength. It should be noted that the upper flange plate 112, the web 111 and the lower flange plate 113 can also form a C-shaped steel structure.

[0032] In one embodiment, the rear end of the frame body 1 is mainly used for bearing the weight of the mixing drum, and the front end of the frame body 1 is mainly used for connecting with the tractor head. The longitudinal beam 11 comprises a first longitudinal beam section 114 and a second longitudinal beam section 115. The first longitudinal beam section 114 is located at the front end of the longitudinal beam 11, the second longitudinal beam section 115 is located at the rear end of the longitudinal beam 11, and the second longitudinal beam section 115 is connected with the first longitudinal beam section 114. The height dimension of the first longitudinal beam section 114 is smaller than the height dimension of the second longitudinal beam section 115, and the top surfaces of the second longitudinal beam section 115 are flush, so that the longitudinal beam 11 integrally forms a gooseneck structure, thereby reducing the overall weight of the frame while ensuring that the longitudinal beam 11 bears the weight of the mixing drum.

[0033] The bottom surface of the first longitudinal beam section 114 and the bottom surface of the second longitudinal beam section 115 are smoothly transitioned, so as to avoid stress concentration at the position where the height dimension of the longitudinal beam 11 changes, and ensure the stress strength of the longitudinal beam 11.

[0034] In some embodiments, the top surface of the rear end of the main beam 11 (i.e., the second main beam segment 115) is provided with a slope 116, which slopes downwards and rearwards. The slope 116 effectively reduces the drag coefficient during vehicle operation, especially at high speeds, by guiding airflow smoothly through the rear of the vehicle, thus reducing air resistance. The slope 116 also disperses the impact force over a wider area in the event of a rear-end collision, reducing concentrated damage to the rear of the vehicle frame. The preferred inclination angle of the slope 116 is 10°-20°. In some embodiments, the preferred inclination angle is 15°.

[0035] The upper flange 112 at the rear end of the main beam 11 is provided with a first connecting hole 1121. The first connecting hole 1121 is used to fix the main beam 2 to the back end 2 by means of fasteners, so that the back end 2 can be detachably connected to the frame. Multiple first connecting holes 1121 are provided at intervals along the length of the main beam 11. The fasteners can be grooved rivets, solid rivets, bolts and nuts, etc.

[0036] The upper flange 112 at the front end of the main beam 11 is provided with a second connecting hole 1122. The second connecting hole 1122 is used to fix the front end 3 to the front end 3 by means of fasteners, so that the front end 3 is detachably connected to the frame. Multiple second connecting holes 1122 are provided at intervals along the length of the main beam 11.

[0037] The crossbeam 12 includes a rear connecting crossbeam 121 and a traction disc crossbeam 122. The rear connecting crossbeam 121 is connected to the rear end of the main beam 11, and the traction disc crossbeam 122 is connected to the front end of the main beam 11.

[0038] The two ends of the back-end connecting beam 121 are connected to the web plate 111 and the upper flange plate 112. The top surface of the back-end connecting beam 121 is flush with the top surface of the main beam 11, so that the back-end connecting beam 121 and the main beam 11 jointly support the back-end 2.

[0039] The back-end connecting beam 121 is provided with a third connecting hole 1213, which is used to fix the back-end 2 with fasteners. Multiple third connecting holes 1213 are provided at intervals along the length of the back-end connecting beam 121.

[0040] The back-end connecting beam 121 includes a first load-bearing portion 1211 and a first reinforcing portion 1212. The first load-bearing portion 1211 is horizontally arranged, and the first reinforcing portions 1212 are provided on both sides of the first load-bearing portion 1211. The first reinforcing portions 1212 are arranged at an angle to the first load-bearing portion 1211, specifically, the first reinforcing portions 1212 are perpendicular to the first load-bearing portion 1211. The first reinforcing portions 1212 can increase the stress strength of the first load-bearing portion 1211, thereby improving the support effect on the back-end 2. A third connecting hole 1213 is provided on the first load-bearing portion 1211.

[0041] The two ends of the traction disc crossbeam 122 are connected to the web plate 111 and the upper wing plate 112. The top surface of the traction disc crossbeam 122 is flush with the top surface of the main beam 11, so that the traction disc crossbeam 122 and the main beam 11 jointly support the front end 3.

[0042] The traction disc crossbeam 122 is provided with a fourth connecting hole 1225, which is used for fixed connection with the front end 3 by fasteners. Multiple fourth connecting holes 1225 are provided at intervals along the length of the traction disc crossbeam 122.

[0043] The traction disc crossbeam 122 includes a first crossbeam 1221 and a second crossbeam 1222, which are spaced apart along the front-rear direction of the main beam 11. The first crossbeam 1221 and the second crossbeam 1222 have basically the same structure.

[0044] Both the first crossbeam 1221 and the second crossbeam 1222 include a second load-bearing portion 1223 and a second reinforcing portion 1224. The second load-bearing portion 1223 is horizontally arranged, and the second reinforcing portion 1224 is provided on both sides of the second load-bearing portion 1223. The second reinforcing portion 1224 is arranged at an angle to the second load-bearing portion 1223, specifically, the second reinforcing portion 1224 is perpendicular to the second load-bearing portion 1223. The second reinforcing portion 1224 can increase the stress strength of the second load-bearing portion 1223, thereby improving the support effect on the front end 3. A fourth connecting hole 1225 is provided on the second load-bearing portion 1223 of both the first crossbeam 1221 and the second crossbeam 1222.

[0045] The second reinforcing part 1224 is also provided with a first weight-reducing hole 1226, which can reduce the weight of the traction disc crossbeam 122. The wires between the tractor unit and the electrical components arranged on the frame can also be run through the first weight-reducing hole 1226, making the wiring arrangement between the tractor unit and the electrical components arranged on the frame more convenient.

[0046] See Figure 5 The backstage 2 includes a backstage platform 21 and a backstage connecting plate 22. The backstage connecting plate 22 is mounted on the backstage platform 21 and is detachably connected to the main beam 11 and the backstage connecting crossbeam 121, allowing the backstage platform 21 to be connected to the frame body 1 via the backstage connecting plate 22. Essentially, the backstage 2 is separated from the frame body 1, and the backstage connecting plate 22 is added to the bottom of the backstage platform 21 to connect the backstage platform 21 to the frame body 1. The backstage connecting plate 22 enhances the overall rigidity of the backstage 2, stabilizes the frame body 1, and can replace part of the crossbeam 12 structure, avoiding excessive weight increase.

[0047] The backstage platform 21 includes backstage side panels 211 and a backstage top panel 212. Four backstage side panels 211 are provided, forming a quadrilateral structure. The backstage top panel 212 is fixed to the top of the backstage side panels 211 and supports the rear end of the mixing drum. Weight-reducing holes may be provided on the backstage side panels 211 to reduce the weight of the backstage platform 21.

[0048] The bottom area of ​​the back stage 21 is larger than the top area of ​​the back stage 21, so that when the weight of the mixing drum is transmitted to the frame body 1 through the back stage 21, the force transmitted from the back stage 21 to the frame body 1 is more dispersed, thereby avoiding stress concentration and reducing the stress strength of the frame body 1.

[0049] The backstage connecting plate 22 is flat and is connected to the bottom surface of the backstage platform 21. The bottom of the four backstage side plates 211 are all connected to the top surface of the backstage connecting plate 22 by welding, which improves the connection strength between the backstage platform 21 and the backstage connecting plate 22.

[0050] The two sides of the rear connecting plate 22 are fixedly connected to the two main beams 11, and the rear side of the rear connecting plate 22 is fixedly connected to the rear connecting crossbeam 121. However, the front side of the rear connecting plate 22 is not connected to the frame body 1. That is, the rear connecting plate 22 is only connected to the frame body 1 on the two sides and the rear side. This arrangement creates an open structure between the front end of the rear connecting plate 2 and the frame body 1, which provides better flexibility and helps to release stress.

[0051] The back-end connecting plate 22 includes a support portion 221 and a dovetail portion 222, which are preferably integrally formed. The back-end platform 21 is mounted on the support portion 221. The rear end of the support portion 221 is connected to the back-end connecting crossbeam 121, and the two sides of the support portion 221 in the width direction are connected to the main beam 11. The dovetail portions 222 are located on both sides of the front end of the support portion 221, that is, dovetail portions 222 are provided on both sides of the front end of the support portion 221. The dovetail portions 222 extend towards the front end 3 and are connected to the main beam 11. The connection of the two sides of the support portion 221 in the width direction and the dovetail portions 222 to the main beam 11 increases the contact area between the back-end connecting plate 22 and the main beam 11, which can effectively control the relative deformation of the main beam 11 of the frame body 1. This prevents the frame body 1 from having a crossbeam 12 at the front of the back-end connecting plate 22, thus avoiding excessive stiffness at this position and stress concentration, and also makes the frame body 1 lighter overall.

[0052] The smooth transition between the dovetail portion 222 and the support portion 221 ensures a smooth transition in overall rigidity, reduces stress concentration, and improves the load-bearing strength of the back-end connecting plate 22.

[0053] The thickness of the back-end connecting plate 22 is greater than the wall thickness of the back-end platform 21 to ensure the strength of the connection point between the back-end connecting plate 22 and the frame body 1.

[0054] In one embodiment, a second weight-reducing hole 2211 is provided in the middle of the back-end connecting plate 22, so as to reduce the weight of the back-end connecting plate 22 while ensuring the strength of the back-end connecting plate 22.

[0055] The back-end connecting plate 22 is provided with a first screw hole 223. The first screw hole 223 is set in a one-to-one correspondence with the first connecting hole 1121 and the third connecting hole 1213, so that the fastener can be inserted into the first screw hole 223 and the first connecting hole 1121, as well as the first screw hole 223 and the third connecting hole 1213, so as to realize the connection between the back-end connecting plate 22 and the main beam 11 and the back-end connecting crossbeam 121.

[0056] See Figure 6 The front end 3 includes a front end platform 31 and a front end connecting plate 32. The front end connecting plate 32 is mounted on the front end platform 31 and is detachably connected to the main beam 11 and the traction disc crossbeam 122, allowing the front end platform 31 to be connected to the frame body 1 via the front end connecting plate 32. Essentially, the front end 3 is separated from the frame body 1, and the front end connecting plate 32 is added to the bottom of the front end platform 31 to connect the front end platform 31 to the frame body 1. The front end connecting plate 32 enhances the overall rigidity of the back end 2, stabilizes the frame body 1, and can replace part of the crossbeam 12 structure, avoiding excessive weight increase.

[0057] The front platform 31 includes front side panels 311 and a front top panel 312. Four front side panels 311 are provided, forming a quadrilateral structure. The front top panel 312 is fixed to the top of the front side panels 311 and supports the front end of the mixing drum. Weight-reducing holes may be provided on the front side panels 311 to reduce the weight of the front platform 31.

[0058] The bottom area of ​​the front platform 31 is larger than the top area of ​​the front platform 31, so that when the weight of the mixing drum is transmitted to the frame body 1 through the front platform 31, the force transmitted from the front platform 31 to the frame body 1 is more dispersed, thereby avoiding stress concentration and reducing the stress strength of the frame body 1.

[0059] The front desk connecting plate 32 is flat and is connected to the bottom surface of the front desk body 31. The bottom of the four front desk side panels 311 are all connected to the top surface of the front desk connecting plate 32 by welding, which improves the connection strength between the front desk body 31 and the front desk connecting plate 32.

[0060] The front connecting plate 32 is fixedly connected to the two main beams 11 on both sides of its width. The front side of the front connecting plate 32 is connected to the first crossbeam 1221, and the rear side of the front connecting plate 32 is connected to the second crossbeam 1222. That is, the front connecting plate 32 is connected to the frame body 1 on all four sides, so that the load is more distributed and better connection strength is guaranteed.

[0061] The thickness of the front connecting plate 32 is greater than the wall thickness of the front platform body 31 to ensure the strength of the connection point between the front connecting plate 32 and the frame body 1.

[0062] In one embodiment, a second weight-reducing hole 2211 is provided in the middle of the front connecting plate 32, so as to reduce the weight of the front connecting plate 32 while ensuring the strength of the front connecting plate 32.

[0063] The front connecting plate 32 is provided with a second screw hole 322. The second screw hole 322 is provided in a one-to-one correspondence with the second connecting hole 1122 and the fourth connecting hole 1225, so that the fastener can be inserted into the second screw hole 322 and the second connecting hole 1122, as well as the second screw hole 322 and the fourth connecting hole 1225, so as to realize the connection between the front connecting plate 32 and the main beam 11 and the traction disc crossbeam 122.

[0064] The concrete mixer semi-trailer frame of this application includes a frame body 1, a front end 3, and a rear end 2. The front end 3 and the rear end 2 are set as independent structures from the frame body 1. The front end 3 and the rear end 2 are detachably mounted on the frame body 1, so that during long-distance transportation, the front end 3 and the rear end 2 can be disassembled from the frame body 1 into independent structures. This allows the frame body 1 and the front end 3 and the rear end 2 to be placed on the vehicle separately, which facilitates the stacking of the concrete mixer semi-trailer frame during transportation, improves the space utilization of the vehicle, increases shipping efficiency, and reduces transportation costs.

[0065] The backstage 2 includes a backstage platform 21 and a backstage connecting plate 22. The backstage platform 21 is detachably connected to the main beam 11 and crossbeam 12 of the frame body 1 via the backstage connecting plate 22. The frontstage 3 includes a frontstage platform 31 and a frontstage connecting plate 32. The frontstage platform 31 is detachably connected to the main beam 11 and crossbeam 12 of the frame body 1 via the frontstage connecting plate 32. This connection between the backstage connecting plate 22 and the frontstage connecting plate 32 and the frame body 1 improves the load-bearing strength of the frame body 1. In other words, by setting up the backstage connecting plate 22 and the frontstage 3 and connecting plate, while ensuring the overall load-bearing strength of the mixer semi-trailer frame, the size of the crossbeam 12 of the frame body 1 can be designed to be smaller, and the number of crossbeams 12 can be reduced, thus reducing the weight of the frame body 1 and facilitating handling.

[0066] The two main beams 11, the rear connecting beam 121, and the traction disc beam 122 enclose an installation space for the electric drive system, which includes a power battery, transformer, controller, and radiator. The traction disc beam 122 and the rear connecting beam 121 of the frame body 1 are welded to the main beams 11, forming the main load-bearing structure. This open structure, similar to that of skeleton vehicles and flatbed truck frames, results in higher assembly efficiency and a larger installation space, making it more suitable for installing larger electric drive systems and achieving electrification. The rear beam 2 is detachably connected to the frame body 1, allowing it to be removed during electric drive system installation without obstructing the system's installation, thus facilitating installation.

[0067] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A mixer semi-trailer frame, characterized in that, include: The frame body includes two main beams and a crossbeam. The two main beams are spaced apart, and the crossbeam is located between the two main beams and is fixedly connected to the two main beams. The rear end is an independent structure from the frame body and is located at the rear end of the main beam. The rear end includes a rear end platform and a rear end connecting plate. The rear end connecting plate is disposed on the rear end platform and is detachably connected to the main beam and the crossbeam, so that the rear end platform is connected to the frame body through the rear end connecting plate. The front end is an independent structure from the frame body and is located at the front end of the main beam. The front end includes a front end platform and a front end connecting plate. The front end connecting plate is disposed on the front end platform and is detachably connected to the main beam and the crossbeam, so that the front end platform is connected to the frame body through the front end connecting plate.

2. The mixer semi-trailer frame according to claim 1, characterized in that, The thickness of the back-end connection plate is greater than the wall thickness of the back-end platform.

3. The mixer semi-trailer frame according to claim 1, characterized in that, The crossbeam includes a rear connecting crossbeam, which is connected to the rear end of the main beam; The back-end connecting plate is flat, and its two sides are fixedly connected to the two main beams respectively. The rear side of the back-end connecting plate is fixedly connected to the back-end connecting crossbeam.

4. The mixer semi-trailer frame according to claim 3, characterized in that, The back-end connecting plate includes a support part and a dovetail part. The dovetail part is provided on both sides of the front end of the support part. The dovetail part extends towards the front end. Both sides of the support part in the width direction and the dovetail part are connected to the main beam. The rear end of the support part is connected to the back-end connecting crossbeam. The platform of the backstage is mounted on the support.

5. The mixer semi-trailer frame according to claim 4, characterized in that, The supporting part and the dovetail part are an integral structure; The dovetail portion and the support portion have a smooth transition.

6. The mixer semi-trailer frame according to claim 1, characterized in that, The thickness of the front desk connecting plate is greater than the wall thickness of the front desk body.

7. The mixer semi-trailer frame according to claim 1, characterized in that, The crossbeam includes a traction disc crossbeam, which is connected to the front end of the main beam; The front-end connecting plate is flat, and its two sides are fixedly connected to the two main beams respectively. The front and rear sides of the back-end connecting plate are fixedly connected to the traction disc beam.

8. The mixer semi-trailer frame according to claim 7, characterized in that, The traction disc crossbeam includes a first crossbeam and a second crossbeam. The first crossbeam and the second crossbeam are spaced apart along the front-rear direction of the main beam. The positions of the first crossbeam and the second crossbeam correspond one-to-one with the front and rear sides of the front connecting plate. The front side of the front panel connecting plate is connected to the first crossbeam, and the rear side of the front panel connecting plate is connected to the second crossbeam.

9. The mixer semi-trailer frame according to claim 7, characterized in that, The two main beams, the rear connecting beam, and the traction disc beam form an installation space, which is used to install an external electric drive system.

10. A mixer semi-trailer, characterized in that, It includes a mixing drum and a mixer semi-trailer frame as described in any one of claims 1-9, wherein the mixing drum is connected to the front and rear of the mixer semi-trailer frame.

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