Mixer truck frame and mixer truck

Abstract

The invention relates to the field of mixer trucks, in particular to a mixer truck frame and a mixer truck, and the mixer truck frame comprises a main longitudinal beam structure and a first cross beam structure; the main longitudinal beam structure comprises at least two main longitudinal beams, all the main longitudinal beams are sequentially arranged in the transverse direction, and the main longitudinal beams are fixedly connected through the first cross beam structure; a groove is formed in the top end of the middle of the main longitudinal beam, so that a concave area is formed in the middle of the main longitudinal beam structure, and the concave area is used for containing a low-position area of a stirring tank installed on a stirring vehicle. The device can be suitable for installation of the stirring tank of the mixer truck, the gravity center of the stirring tank can be lowered after the stirring tank is installed, the lowest point of the stirring tank can be lowered to the position below the upper wing face of a frame of the mixer truck, and the driving safety of the mixer truck is improved.

Description

Technical Field

[0001] The present invention relates to the field of mixer trucks, and in particular to a mixer truck frame and a mixer truck. Background Art

[0002] In the prior art, the upper arrangement of the mixer truck usually supports the mixing tank on the sub-frame through the front and back stage, and then installs the sub-frame on the mixer truck frame. Although this arrangement is simple in structure, there are some significant problems in practical application. For example: due to the belly height of the mixer truck frame itself and the height of the sub-frame installed thereon, the center of gravity of the mixing tank and the mixer truck is relatively high after the height of the mixer truck frame and the sub-frame are superimposed, which makes it easy to roll over during high-speed driving, thereby seriously affecting the safety of the driver and the driving safety of the vehicle. Summary of the invention

[0003] The object of the present invention is to provide a mixer truck frame, which can be suitable for the installation of a mixing tank of the mixer truck, and can lower the center of gravity of the mixing tank after the mixing tank is installed, and can lower the lowest point (low area) of the mixing tank to below the upper wing surface of the mixer truck frame, thereby improving the driving safety of the mixer truck.

[0004] Another object of the present invention is to provide a mixer truck, whose mixing tank can be directly installed on the mixer truck frame through the front and back stages, eliminating the sub-frame, and after the mixing tank is installed, the center of gravity of the mixing tank can be lowered, and the lowest point (low-position area) of the mixing tank can be lowered below the upper wing surface of the mixer truck frame, thereby improving the driving safety of the mixer truck.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A mixer truck frame comprises a main longitudinal beam structure and a first cross beam structure;

[0007] The main longitudinal beam structure includes at least two main longitudinal beams, all of which are arranged in sequence in the transverse direction, and the main longitudinal beams are connected and fixed by the first cross beam structure;

[0008] A groove is provided at the top of the middle portion of the main longitudinal beam, so that a recessed area is formed in the middle portion of the main longitudinal beam structure, and the recessed area is used to accommodate the low-position area of ​​the mixing tank installed on the mixer truck.

[0009] Furthermore, the main longitudinal beam structure comprises two main longitudinal beams, each of which is a trough beam, and the two trough beams are symmetrically arranged with the notches facing each other;

[0010] The trough beam comprises an upper wing surface structure, a belly surface structure and a lower wing surface structure which are connected in sequence.

[0011] Furthermore, a first reinforcing longitudinal beam is arranged in the groove of the trough beam, and the first reinforcing longitudinal beam is consistent with the shape of the belly structure and is correspondingly fitted to the belly structure; or, the first reinforcing longitudinal beam is consistent with the shape of the trough beam and is correspondingly fitted to the inner wall of the trough beam.

[0012] Further, the first crossbeam structure includes a front crossbeam, a back-to-back crossbeam, an aircraft beam and a tail crossbeam arranged in sequence from front to back;

[0013] Wherein, the front cross beam and the back-to-back cross beam are respectively arranged at the front end and the rear end of the recessed area, and the rear cross beam is located at the rear end of the main longitudinal beam structure.

[0014] Furthermore, it also includes a second reinforcing longitudinal beam, which is arranged correspondingly in the middle part of the main longitudinal beam, and the second reinforcing longitudinal beam corresponds to the position of the groove and is located below the recessed area, so as to supplement the structural strength of the main longitudinal beam corresponding to the groove.

[0015] Furthermore, it also includes a connecting plate, through which the second reinforcing longitudinal beam and the main longitudinal beam are connected and fixed;

[0016] The sum of the heights between the bottom of the groove and the bottom of the second reinforcing longitudinal beam is h1, and the height of the connecting plate corresponding to the groove is h2, which satisfies: 350≤h1≤500mm, h1<h2;

[0017] At least three layers of battery packs can be suspended and installed vertically on the outer side of the connecting plate.

[0018] Furthermore, it also includes a second crossbeam structure, the second crossbeam structure includes a plurality of hoop crossbeams, and the plurality of hoop crossbeams are sequentially arranged at the bottom of the connecting plate along the longitudinal direction;

[0019] The hoop cross beam includes a supporting portion and a clamping portion located at both ends of the supporting portion, the supporting portion supports the connecting plate, and the clamping portion is clamped to the outer side of the connecting plate, and the top of the supporting portion is located between the two second reinforcing longitudinal beams and is also used to install batteries or battery packs.

[0020] Furthermore, at least one longitudinal wiring harness channel is provided between the main longitudinal beam and the first reinforced longitudinal beam, and the longitudinal wiring harness channel is used for laying high-voltage wiring harnesses. At least one discharge channel connected to the longitudinal wiring harness channel is provided between the main longitudinal beam and the first reinforced longitudinal beam, and the outlet end of the discharge channel is located between the two main longitudinal beams, and the connection end of the high-voltage wiring harness located in the longitudinal wiring harness channel can be discharged from the discharge channel.

[0021] A mixer truck comprises a mixing tank, a front stage and a back stage, wherein the front end and the rear end of the mixing tank are rotatably mounted on the front stage and the back stage respectively, and further comprises a mixer truck frame, wherein the front stage and the back stage are respectively arranged on the mixer truck frame, wherein the front stage and the back stage are respectively located at the front end and the rear end of the recessed area, wherein the front end of the mixing tank is tilted downward and there is a low-position area, wherein the low-position area is the lowest part of the mixing tank after the mixing tank is tiltedly mounted, and the low-position area of ​​the mixing tank is located within the recessed area.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present application provides a frame of a mixer truck, wherein a groove is provided at the top middle portion of each main longitudinal beam, so that a recessed area is formed on the entire mixer truck frame at a position corresponding to the groove. When the mixer tank is actually installed, the mixer tank can be directly installed on the mixer truck frame through a front stage and a back stage, and the sub-frame is eliminated. Moreover, since the mixer truck frame has the recessed area, the recessed area has a certain depth, and the height of the front stage and the back stage can be lowered accordingly, so that after the mixer tank is installed, the low-position area of ​​the mixer tank is just located in the recessed area of ​​the mixer truck frame, and the lowest point of the mixer tank is located below the upper wing surface of the mixer truck frame. Through such a design, the mixer truck frame can lower the center of gravity of the mixer tank after the mixer tank is installed, and can lower the lowest point (low-position area) of the mixer tank to below the upper wing surface of the mixer truck frame, thereby improving the driving safety of the mixer truck, as well as the safety of the driver and passers-by. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a structural schematic diagram of a mixer truck frame of the present invention;

[0026] Figure 2 A structural schematic diagram of the main longitudinal beam structure of the present invention being installed with the first cross beam structure;

[0027] Figure 3 This is a schematic diagram of the end structure of the main longitudinal beam structure of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure in which the crossbeam of the present invention is enclosed around the second reinforcing longitudinal beam and the battery pack is installed between the second reinforcing longitudinal beams (the connecting plate outside the second reinforcing longitudinal beam is hidden);

[0029] Figure 5It is a structural schematic diagram of the connection plate of the present invention (the outer flange structure is not shown);

[0030] Figure 6 6a and 6b of the present invention respectively show the structural schematic diagrams of two shapes of the hoop beam;

[0031] Figure 7 It is a side view structural schematic diagram of the middle part of the main longitudinal beam, the second reinforced longitudinal beam and the connecting plate of the present invention;

[0032] Figure 8 For the present invention Figure 7 Schematic diagram of the cross-section structure at AA in the middle;

[0033] Fig. 9 This is a schematic diagram of the structure in which the mixing tank of the present invention is directly installed on the frame of a mixing truck through a front stage and a back stage.

[0034] In the figure:

[0035] 1-main longitudinal beam structure; 100-main longitudinal beam; 101-groove; 102-recessed area; 103-upper wing structure; 104-ventral structure; 105-lower wing structure; 106-longitudinal harness channel; 107-discharge channel;

[0036] 2- first reinforced longitudinal beam;

[0037] 3-first beam structure; 301-front beam; 302-back-to-back beam; 303-aircraft beam; 304-tail beam;

[0038] 4-second reinforced longitudinal beam; 5-connecting plate; 501-upper flange structure; 502-lower flange structure; 503-outer flange structure;

[0039] 6-second beam structure; 601-hooped beam; 6011-supporting portion; 6012-hooping portion;

[0040] 7-mixing tank; 701-low area; 8-front desk; 9-back desk; 10-reducer; 11-battery pack. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0042] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0046] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0048] Example 1

[0049] Reference Figure 1 , Figure 2 and Fig. 9 , this embodiment provides a mixer truck frame, including a main longitudinal beam structure 1 and a first cross beam structure 3;

[0050] The main longitudinal beam structure 1 includes at least two main longitudinal beams 100, and all the main longitudinal beams 100 are arranged in sequence along the transverse direction, that is, the length direction of the main longitudinal beams 100 is longitudinal, but there are gaps between them, so the main longitudinal beams 100 are connected and fixed to form an integral body through the first cross beam structure 3. The main longitudinal beam 100 can be an I-beam or a trough beam.

[0051] A groove 101 is provided at the top middle portion of the main longitudinal beam 100, so that a recessed area 102 is formed in the middle portion of the main longitudinal beam structure 1. The recessed area 102 is used to accommodate the low-position area 701 of the mixing tank 7 installed on the mixer truck. The low-position area 701 is the lowest portion of the mixing tank 7 after the mixing tank 7 is installed at an angle. The low-position area 701 of the mixing tank 7 can be located in the recessed area 102, so that the lowest portion of the mixing tank 7 is located below the upper wing surface of the frame.

[0052] In practice, when the mixer truck frame is actually installed and the mixing tank 7 is actually installed, the mixing tank 7 can be directly installed on the mixer truck frame through the front stage 8 and the back stage 9, then the mixer truck cancels the sub-frame (no sub-frame), and because the mixer truck frame has a recessed area 102, the recessed area 102 has a certain depth, and the height of the front stage 8 and the back stage 9 can be reduced accordingly, so that after the mixing tank 7 is installed, the low area 701 of the mixing tank 7 is just located in the recessed area 102 of the mixer truck frame, and the lowest point of the mixing tank 7 is located below the upper wing surface of the mixer truck frame; through such a design, the mixer truck frame can lower the center of gravity of the mixing tank 7 after the mixing tank 7 is installed, and can lower the lowest point (low area 701) of the mixing tank 7 to below the upper wing surface of the mixer truck frame. This improvement helps to improve the stability of the mixer truck during driving and reduce the occurrence of rollover accidents, thereby improving driving safety, improving the driving safety of the mixer truck, and improving the safety of the driver and passers-by.

[0053] Example 2

[0054] In recent years, with the gradual expansion of the pure electric mixer truck market, the center of gravity control problem of pure electric mixer trucks has also received increasing attention. Taking the Sany brand subframeless mixer truck as an example, in order to meet the layout requirements of a large number of power batteries (about 350 kWh) required for pure electric models, a side-mounted battery + back battery solution or a direct back battery solution is adopted. The belly height of the conventional mixer truck frame is about 280 mm or 300 mm (the belly height of the frame of the new energy mixer truck model is 300 mm), and the side-mounted battery pack can only reach two layers. However, due to the heavy weight of the battery pack, the existing belly height of the frame is not enough to support the installation of a sufficient number of batteries. If the side-mounted solution is fully adopted, it cannot meet the total battery demand of the whole vehicle. Therefore, a side-mounted battery combined with a back battery solution is also required. When combined with the back battery solution, the center of gravity of the mixer truck will be further increased, affecting the stability and handling of the vehicle, especially when the height of the battery pack reaches three layers or more, which puts higher requirements on vehicle design. In addition, during the production and assembly process of new energy commercial mixer trucks, the layout space of the newly added high-voltage wiring harness is limited, further increasing the difficulty and technical challenges of assembly.

[0055] In view of the above problems and the problems mentioned in the background technology, this embodiment also provides a new technical solution as follows:

[0056] Reference Figure 1-Figure 9 , a mixer truck frame, comprising a main longitudinal beam structure 1 and a first cross beam structure 3;

[0057] The main longitudinal beam structure 1 includes at least two main longitudinal beams 100, and all the main longitudinal beams 100 are arranged in sequence and spaced apart in the transverse direction, that is, the length direction of the main longitudinal beams 100 is longitudinal, but there are spaces between them, so the main longitudinal beams 100 are connected and fixed to form an integral body through the first cross beam structure 3. The main longitudinal beam 100 can be an I-beam or a trough beam.

[0058] A groove 101 is provided at the top middle portion of the main longitudinal beam 100, so that a recessed area 102 is formed in the middle portion of the main longitudinal beam structure 1. The recessed area 102 is used to accommodate the low-position area 701 of the mixing tank 7 installed on the mixer truck. The low-position area 701 is the lowest portion of the mixing tank 7 after the mixing tank 7 is installed at an angle. The low-position area 701 of the mixing tank 7 can be located in the recessed area 102, so that the lowest portion of the mixing tank 7 is located below the upper wing surface of the frame.

[0059] In this embodiment, the main longitudinal beam structure 1 preferably includes two main longitudinal beams 100, and the main longitudinal beams 100 are channel beams, such as channel steels. The two channel beams are symmetrically arranged and their notches are opposite to each other.

[0060] For ease of explanation, the various structures of the trough beam are defined separately here: the trough beam is an integrally formed structure, and the trough beam includes an upper wing structure 103, a belly structure 104 and a lower wing structure 105 which are sequentially connected from top to bottom.

[0061] In the present embodiment, a first reinforcing longitudinal beam 2 is arranged in the groove of each trough beam, and the first reinforcing longitudinal beam 2 has the same shape as the belly structure 104 and is correspondingly fitted to the belly structure 104; or, the first reinforcing longitudinal beam 2 has the same shape as the trough beam and is correspondingly fitted to the inner wall of the trough beam; due to the design of the groove 101 on the trough beam, the structural strength at the groove 101 of the trough beam will be correspondingly reduced, and the first reinforcing longitudinal beam 2 is used to improve the structural strength at the groove 101 of the trough beam and the overall structural strength of the trough beam. After the trough beam and the first reinforcing longitudinal beam 2 are correspondingly fitted and connected and fixed, a double-layer beam structure is formed, thereby improving the overall structural strength of the main longitudinal beam structure 1.

[0062] like Figure 2 The first crossbeam structure 3 includes a front crossbeam 301, a back-to-back crossbeam 302, an aircraft beam 303 and a tail crossbeam 304 which are arranged in sequence from front to back, and the front crossbeam 301, the back-to-back crossbeam 302, the aircraft beam 303 and the tail crossbeam 304 are connected and fixed to the main longitudinal beam 100 by multiple bolts or multiple rivets respectively.

[0063] The front cross beam 301 and the back-to-back cross beam 302 are respectively arranged at the front and rear ends of the recessed area 102, which can make up for the reduced structural strength of the main longitudinal beam 100 after the groove 101 is cut out. The tail cross beam 304 is located at the tail end of the main longitudinal beam structure 1, and the aircraft beam 303 is located between the back-to-back cross beam 302 and the tail cross beam 304. The two main longitudinal beams 100 are connected and fixed by the first cross beam structure 3.

[0064] A second reinforcing longitudinal beam 4 is arranged at the bottom of the middle part of the main longitudinal beam 100 and at a position corresponding to the groove 101. The second reinforcing longitudinal beam 4 is located below the recessed area 102 without occupying the space of the recessed area 102. The second reinforcing longitudinal beam 4 is not only used to supplement the structural strength of the main longitudinal beam 100 corresponding to the groove 101, but also can improve the overall structural strength of the main longitudinal beam structure 1.

[0065] It also includes a connecting plate 5. The second reinforcing longitudinal beam 4 is not only located at the bottom of the main longitudinal beam 100, but also the top surface of the second reinforcing longitudinal beam 4 corresponds to and fits with the bottom surface of the main longitudinal beam 100. Then, the second reinforcing longitudinal beam 4 and the main longitudinal beam 100 are covered and locked by the connecting plate 5 to achieve connection and fixation therebetween. The sum of the heights between the bottom of the groove 101 on the trough beam and the bottom of the second reinforcing longitudinal beam 4 is h1, the connecting plate 5 is correspondingly covered on the outside of the second reinforcing longitudinal beam 4 and the main longitudinal beam 100, and a profiling groove is provided on the connecting plate 5 at a position corresponding to the groove 101 of the main longitudinal beam 100, the profiling groove on the connecting plate 5 is consistent in shape with the groove 101 on the main longitudinal beam 100 and is correspondingly arranged, the height of the connecting plate 5 corresponding to the groove 101 is h2, since the top of the connecting plate 5 is covered on the inner wall of the groove 101 or is flush with the inner wall of the groove 101, and the bottom of the connecting plate 5 is covered on the bottom of the second reinforcing longitudinal beam 4, then h2 is not less than h1, and satisfies: 350≤h1≤500mm, h1<h2, if Figure 7 and Figure 8 .

[0066] In this embodiment, a lower flange structure 502 is provided on the inner side of the bottom of the connecting plate 5, and the lower flange structure 502 is used to hold up the second reinforcing longitudinal beam 4. An upper flange structure 501 is provided on the inner side of the top of the connecting plate 5, and the upper flange structure 501 is used to cover the top of the main longitudinal beam 100, especially at the position of the groove 101 corresponding to the main longitudinal beam 100. The upper flange structure 501 covers the inner wall of the groove 101, and the connecting plate 5 covers the bottom surface of the second reinforcing longitudinal beam 4 through the upper flange structure 501. The overall longitudinal section of the connecting plate 5 is groove-shaped, such as Figure 5 The upper outer side of the connecting plate 5 can be provided with an outer flange structure 503 according to the vehicle carrying capacity. Figure 1 As shown, the outer flange structure 503 is fixed to the upper side of the connecting plate 5 by riveting. For vehicles with a large carrying capacity or poor working conditions, the outer flange structure 503 of the connecting plate 5 can further improve the frame strength and ensure driving safety.

[0067] A preferred implementation in this embodiment: the height of the trough beam is 300mm (the same as the belly height of the frame of the existing new energy mixer truck model, no change), on this basis, the second reinforcing longitudinal beam 4 is added, thereby increasing the belly height of the frame as a whole, and the belly height is increased compared to the existing mixer truck frame, so compared to the prior art, the outer side of the connecting plate 5 can be vertically suspended and installed with at least three layers of battery packs 11. Preferably, h1 is designed to be 460-470mm, for example: 465mm, 466mm, 467mm or 468mm, h1 or h2 is about 1.5-2 times the belly height of the conventional main frame, and the installation area of ​​the side-mounted battery is increased, which can realize the side-mounted three-layer battery pack 11, reduce the number of batteries on the back of the mixer truck, and realize the lowering of the center of gravity of the power battery, which can solve the problem that conventional mixer trucks can only hang two layers of battery packs 11 on the side due to the low belly height.

[0068] Specifically, the overall shape of the groove 101 can be designed to be an inverted trapezoid, and the depth of the groove 101 ranges from 130 to 170 mm; preferably, the depth of the groove 101 is designed to be 150 mm, and because the lowest area of ​​the front end of the mixing tank 7 is located in the recessed area 102, the lowest area of ​​the mixing tank 7 can be 100 to 150 mm lower than the upper wing surface of the frame, and the center of mass of the mixing tank 7 is lower than that of a conventional mixer truck without a subframe.

[0069] It also includes a second crossbeam structure 6, which includes a plurality of hoop crossbeams 601, and the plurality of hoop crossbeams 601 are sequentially arranged at the bottom of the connecting plate 5 along the longitudinal direction;

[0070] The hoop cross beam 601 includes a support portion 6011 and a clamping portion 6012 located at both ends of the support portion 6011. The support portion 6011 supports the connecting plate 5, and the clamping portion 6012 is clamped to the outer side of the connecting plate 5. The top of the support portion 6011 is located between the two second reinforcing longitudinal beams 4 and is also used to install batteries.

[0071] The hoop beam 601 is a symmetrical structure as a whole, and is in a U-shape or a "J" shape. When the hoop beam 601 is in a "J" shape, it has symmetrically arranged hook-shaped parts on its left and right sides. The two hook-shaped parts are respectively used to hoop around the outside of the two connecting plates 5 and the second reinforcing longitudinal beam 4, further improving the connection strength therebetween. When the hoop beam 601 is in a U-shape, batteries can be installed on the top of the support portion 6011 to expand the battery capacity of the entire vehicle and achieve a longer driving range for the vehicle. At the same time, these batteries also play the role of frame crossbeams, improving the frame's ability to resist bending and torsion. Moreover, the main longitudinal beam 100, the second reinforcing longitudinal beam 4 and the connecting plate 5 can be fixed together by riveting or bolting, which not only increases the bending strength of the main longitudinal beam 100, but also provides lateral protection for the battery on the inner side of the second reinforcing longitudinal beam 4.

[0072] At least one longitudinal harness channel 106 is provided between the main longitudinal beam 100 and the first reinforced longitudinal beam 2 along the longitudinal direction, and the longitudinal harness channel 106 is used to lay the high-voltage harness; preferably, as Figure 3 As shown, three longitudinal wiring harness channels 106 are opened in sequence from top to bottom between the main longitudinal beam 100 and the first reinforced longitudinal beam 2, and at least one discharge channel 107 connected to the longitudinal wiring harness channel 106 is opened between the main longitudinal beam 100 and the first reinforced longitudinal beam 2, and the outlet end of the discharge channel 107 is located between the two main longitudinal beams 100, and the connection end of the high-voltage wiring harness located in the longitudinal wiring harness channel 106 can be discharged from the discharge channel 107, that is, the high-voltage wiring harness is discharged from the discharge channel and is located between the two main longitudinal beams 100, and a high-voltage connector can also be provided at the connection end of the high-voltage wiring harness, which follows the modular design principle and can be adapted to a variety of high-voltage components (such as batteries, motors, controllers, etc.).

[0073] Example 3

[0074] Reference Fig. 9 A mixer truck comprises a mixing tank 7, a front desk 8 and a back desk 9, the front end and the rear end of the mixing tank 7 are rotatably mounted on the front desk 8 and the back desk 9 respectively, and also comprises a mixer truck frame, on which the front desk 8 and the back desk 9 are respectively arranged, the front desk 8 and the back desk 9 respectively support the front end and the rear end of the mixing tank 7, the front desk 8 and the back desk 9 are respectively located at the front end and the rear end of the recessed area 102, the front end of the mixing tank 7 is tilted downward and there is a low area 701, the low area 701 is after the mixing tank 7 is tilted At the lowest position, the low area 701 of the mixing tank 7 can be located in the recessed area 102, and the heights of the front desk 8 and the back desk 9 can be respectively lowered compared with the heights of the front desk 8 and the back desk 9 of the conventional mixer truck, so that the low area 701 of the mixing tank 7 can be located in the recessed area 102, so that the lowest part of the mixing tank 7 is located below the upper wing surface of the frame, and the low area 701 of the mixing tank 7 can be 100 to 150 mm lower than the upper wing surface of the frame, and the center of mass of the mixing tank 7 is lower than that of the conventional mixer truck without a subframe.

[0075] The front end of the mixing tank 7 is also connected to a reducer 10. The mixing tank 7 obtains kinetic energy from the chassis power take-off of the mixer truck and is connected to the reducer 10 through a transmission shaft. After deceleration, a larger torque and a smaller rotation speed can be obtained to drive the mixing tank 7 to rotate.

[0076] In this embodiment, the mixer truck adopts a four-axle mixer truck, that is, the mixer truck has four axles, and from the front end to the rear end are the first axle, the second axle, the third axle and the fourth axle respectively. When the mixer truck frame is actually installed on the mixer truck, the overlapping part of the main longitudinal beam 100 and the second reinforced longitudinal beam 4 (that is, the location of the second reinforced longitudinal beam 4) is located between the second axle and the third axle of the four-axle mixer truck. The height of h1 or h2 is approximately 1.5 to 2 times the belly height of the conventional main frame, which increases the installation area of ​​the side-mounted battery. The problem that the conventional mixer truck can only hang two layers of battery packs 11 due to the belly height can be solved, and the side-mounted three-layer battery pack 11 can be realized, the number of back batteries can be reduced, and the center of gravity of the power battery can be lowered.

[0077] Not only are battery packs 11 of at least three layers high suspended on the outside of the main longitudinal beam 100, but batteries can also be arranged on the inside of the groove of the grooved beam and between the two second reinforced longitudinal beams 4, so as to further expand the battery power and achieve a longer driving range. At the same time, these batteries located between the two second reinforced longitudinal beams 4 also act as frame crossbeams and improve the frame's resistance to bending and torsional motion.

[0078] Existing new energy mixer trucks use traditional commercial vehicle chassis, and adding high-voltage wiring harnesses to the original frame space makes it difficult to arrange the high-voltage wiring harnesses. To this end, the present application pre-buries the high-voltage wiring harnesses into the longitudinal wiring harness channel 106 opened between the main longitudinal beam 100 of the frame and the first reinforced longitudinal beam 2, such as Figure 3 As shown in the figure, the cross section of the longitudinal harness channel 106 can be designed as a rectangle, and the high-voltage harness is processed into a rectangular cross section accordingly. When the frame is processed, the longitudinal harness channel 106 is formed between the main longitudinal beam 100 and the first reinforced longitudinal beam 2, and on the main longitudinal beam 100 and the first reinforced longitudinal beam 2. Before the main longitudinal beam 100 and the first reinforced longitudinal beam 2 are assembled, the high-voltage harness is pre-buried in the groove 101, and the reinforcing beam and the longitudinal beam are pressed together without gaps by pressing. The high-voltage harness is inserted and arranged in the gap of the standard hole of the frame, which does not affect the normal use of the standard hole of the frame. After the high-voltage harness is pre-buried, the connecting end of its end is led out from the exclusion channel and located between the two main longitudinal beams 100. The connecting end of the high-voltage harness can also be provided with a high-voltage connector. The high-voltage connector follows the modular design principle and can be adapted to a variety of high-voltage components (such as batteries, motors, controllers, etc.). High-voltage components such as batteries, motors or controllers can be plugged into the high-voltage connector of the high-voltage harness to achieve electrical connection, which reduces the difficulty of high-voltage harness arrangement, is very convenient and does not occupy space.

[0079] In general, the design of the mixer truck frame can fully lower the center of gravity of the vehicle, improve vehicle endurance, ensure driving safety for customers and bring more benefits to customers.

[0080] The beneficial effects of the technical solution of the present invention are:

[0081] 1. The design of the recessed area 102 of the main longitudinal beam structure 1 can not only lower the center of gravity of the mixing tank 7 and the entire vehicle compared to a mixer truck with a subframe, but also, compared to a mixer truck without a subframe, the low area 701 of the mixing tank 7 is located in the recessed area 102, and the center of gravity of the mixing tank 7 can be further lowered, and the lowest point of the mixing tank 7 (the low area 701) can be lowered below the upper wing surface of the mixer truck frame, thereby improving the driving safety of the mixer truck, as well as the safety of the driver and passers-by;

[0082] 2. The design of the first reinforced longitudinal beam 2 enables the main longitudinal beam 100 to form a double-layer structure, thereby improving the structural strength. In addition, the design of the second reinforced longitudinal beam 4 can increase the bending resistance of the main longitudinal beam 100, and batteries can be installed therein, thereby providing battery installation space and lateral battery protection;

[0083] 3. The belly height h1 between the second axle and the third axle of the mixer truck frame is 1.5 to 2 times that of the conventional model, and the height h2 of the connecting plate 5 corresponding to h1 is greater than h1. Then the outer side of the connecting plate 5 can meet the requirements of installing 3 layers of battery packs 11, thereby increasing the installation area of ​​the side-mounted battery, reducing the back power, lowering the center of gravity of the power battery, and lowering the center of gravity of the whole vehicle;

[0084] 4. The design of the second crossbeam structure 6 strengthens the torsion resistance of the second reinforced longitudinal beam 4. When the hoop crossbeam 601 is U-shaped, its support portion 6011 can also form a battery mounting bracket with the second reinforced longitudinal beam 4 and provide protection for the battery;

[0085] 5. The design of the connecting plate 5 connects the main longitudinal beam 100 and the second reinforced longitudinal beam 4 to improve the bending and torsion resistance of the frame longitudinal beam;

[0086] 6. The high-voltage wire harness is pre-buried in the longitudinal wire harness channel 106 between the main longitudinal beam 100 and the reinforced longitudinal beam, and its connecting end is led out from the exclusion channel to set a high-voltage connector, which not only facilitates the connection of high-voltage components on the mixer truck, but also reduces the difficulty of high-voltage wire harness layout;

[0087] 7. Batteries are arranged between the two second reinforced longitudinal beams 4 to further expand the battery power, achieve a longer driving range, and make full use of the vehicle space. At the same time, these batteries also play the role of frame crossbeams and improve the frame's anti-bending and torsion capabilities.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0089] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mixer truck frame, characterized in that: It comprises a main longitudinal beam structure (1) and a first cross beam structure (3); The main longitudinal beam structure (1) comprises at least two main longitudinal beams (100), all of the main longitudinal beams (100) are arranged in sequence in the transverse direction, and the main longitudinal beams (100) are connected and fixed by the first cross beam structure (3); A groove (101) is provided at the top of the middle portion of the main longitudinal beam (100), so that a recessed area (102) is formed in the middle portion of the main longitudinal beam structure (1), and the recessed area (102) is used to accommodate a low-position area (701) of a mixing tank (7) installed on a mixer truck.

2. The mixer truck frame according to claim 1, characterized in that: The main longitudinal beam structure (1) comprises two main longitudinal beams (100), wherein the main longitudinal beams (100) are trough beams, and the two trough beams are symmetrically arranged with their notches facing each other; The trough beam is an integrally formed structure and comprises an upper wing surface structure (103), a ventral surface structure (104) and a lower wing surface structure (105) which are connected in sequence.

3. The mixer truck frame according to claim 2, characterized in that: A first reinforcing longitudinal beam (2) is arranged in the groove of the trough beam, the first reinforcing longitudinal beam (2) is consistent in shape with the belly structure (104) and is correspondingly fitted to the belly structure (104); or the first reinforcing longitudinal beam (2) is consistent in shape with the trough beam and is correspondingly fitted to the inner wall of the trough beam.

4. The mixer truck frame according to claim 1, characterized in that: The first crossbeam structure (3) comprises a front crossbeam (301), a back-to-back crossbeam (302), an aircraft beam (303) and a tail crossbeam (304) which are arranged in sequence from front to back; The front cross beam (301) and the back-to-back cross beam (302) are respectively arranged at the front end and the rear end of the recessed area (102), and the rear cross beam (304) is located at the rear end of the main longitudinal beam structure (1).

5. The mixer truck frame according to claim 1, characterized in that: It also includes a second reinforcing longitudinal beam (4), which is arranged correspondingly at the bottom of the middle part of the main longitudinal beam (100) and is used to supplement the structural strength of the main longitudinal beam (100) corresponding to the groove (101).

6. The mixer truck frame according to claim 5, characterized in that: It also comprises a connecting plate (5), and the second reinforcing longitudinal beam (4) and the main longitudinal beam (100) are connected and fixed via the connecting plate (5).

7. The mixer truck frame according to claim 6, characterized in that: The sum of the heights between the bottom of the groove (101) and the bottom of the second reinforcing longitudinal beam (4) is h1, and the height of the connecting plate (5) corresponding to the groove (101) is h2, satisfying: 350≤h1≤500mm, h1<h2; At least three layers of battery packs (11) can be suspended and installed vertically on the outer side of the connecting plate (5).

8. The mixer truck frame according to claim 7, characterized in that: It also includes a second crossbeam structure (6), the second crossbeam structure (6) includes a plurality of hoop crossbeams (601), and the plurality of hoop crossbeams (601) are sequentially arranged at the bottom of the connecting plate (5) along the longitudinal direction; The hoop cross beam (601) comprises a support portion (6011) and a clamping portion (6012) located at both ends of the support portion (6011); the support portion (6011) supports the connecting plate (5), and the clamping portion (6012) is clamped to the outer side of the connecting plate (5); the top of the support portion (6011) is located between the two second reinforcing longitudinal beams (4) and is also used for installing batteries.

9. The mixer truck frame according to claim 3, characterized in that: At least one longitudinal wire harness channel (106) is provided between the main longitudinal beam (100) and the first reinforcing longitudinal beam (2), and the longitudinal wire harness channel (106) is used for laying a high-voltage wire harness. At least one discharge channel (107) connected to the longitudinal wire harness channel (106) is provided between the main longitudinal beam (100) and the first reinforcing longitudinal beam (2), and an outlet end of the discharge channel (107) is located between the two main longitudinal beams (100), and a connection end of the high-voltage wire harness located in the longitudinal wire harness channel (106) can be discharged from the discharge channel (107).

10. A mixer truck, comprising a mixing tank (7), a front stage (8) and a back stage (9), wherein the front end and the rear end of the mixing tank (7) are rotatably mounted on the front stage (8) and the back stage (9), respectively, and characterized in that: It also comprises a mixer truck frame as described in any one of claims 1 to 9, wherein the front desk (8) and the back desk (9) are respectively arranged on the mixer truck frame, and the front desk (8) and the back desk (9) are respectively located at the front end and the rear end of the recessed area (102), and the front end of the mixing tank (7) is tilted downward and there is a low area (701), and the low area (701) is the lowest part of the mixing tank (7) after the mixing tank (7) is installed tilted, and the low area (701) of the mixing tank (7) is located in the recessed area (102).

Images