Reinforced concrete mixer truck auxiliary frame

Abstract

The utility model provides an enhanced concrete mixer truck auxiliary frame, which belongs to the technical field of transport truck frames, and comprises an auxiliary frame, a front frame, a rear frame, a support frame, a pull frame and a mixing tank body, the front frame is arranged at the front end of the auxiliary frame, the rear frame is arranged at the tail end of the auxiliary frame, the support frame is arranged between the rear frame and the auxiliary frame, and the pull frame is arranged on the support frame. Different from the integrated design of an existing auxiliary frame chassis, the auxiliary frame is divided into a structure composed of a plurality of trusses, so that the auxiliary frame chassis can be stressed independently and integrally, the stress is dispersed, and the auxiliary frame chassis is not prone to falling off, so that the service life of the auxiliary frame chassis is prolonged, and the service life of the auxiliary frame chassis is prolonged. The first connecting string beam, the second connecting string beam and the two sets of inclined supports integrally form a trapezoid structure, the supporting pressure between the upper portion and the lower portion of the truss can be reduced, the inclined supports are independent of one another, the transverse stress of the truss is shared through the first connecting string beam and the second connecting string beam, and the stability of the auxiliary frame can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of transport vehicle frames, in particular to a reinforced concrete mixer truck sub-frame. Background Art

[0002] The subframe plays an important role in connecting the chassis and the vehicle's upper body. It is a key component of the concrete mixer truck. The subframe can share the weight of the concrete mixer, reduce the load on the vehicle itself, and improve overall stability and safety. In addition, the subframe can also provide additional support to prevent the concrete mixer from vibrating and swinging excessively during driving.

[0003] The subframe is subjected to complex stresses of tension, torsion, and bending during use. The stress state is extremely complex and severe. During use, due to the continuous vibration of the subframe and chassis longitudinal beam, it elastically bends at the centerline of the chassis rear axle. After reaching a certain number of fatigue cycles, the subframe undergoes plastic deformation, and even subframe fracture is a common failure mode in mixer trucks.

[0004] At the same time, the deformation of the subframe and chassis longitudinal beams caused the vehicle's dedicated device to sink behind the centerline of the rear axle, gradually reducing the distance between the mixing tank and the subframe, causing interference and ultimately rendering the mixer truck inoperable. Therefore, effectively reducing the elastic deformation of the subframe and preventing plastic deformation are key considerations in subframe design.

[0005] Therefore, the present application provides a reinforced concrete mixer truck subframe to meet the demand. Utility Model Content

[0006] The purpose of the utility model is to solve the problems existing in the above-mentioned background technology and to propose a reinforced concrete mixer truck subframe.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The auxiliary frame of the reinforced concrete mixer truck comprises: an auxiliary frame, a front frame, a rear frame, a support frame, a pulling frame and a mixing tank body, wherein the front frame is installed at the front end of the auxiliary frame, the rear frame is installed at the tail end of the auxiliary frame, the support frame is installed between the rear frame and the auxiliary frame, the pulling frame is installed on the rear frame and the support frame, and the mixing tank body is installed on the front frame and the rear frame. The auxiliary frame is composed of a truss, an oblique support, a connecting frame, a first connecting chord beam, a second connecting chord beam and a reinforced steel truss bottom plate, the inner side of the truss is welded with an oblique support, the inner upper and lower ends of the inner side of the truss are welded with a connecting frame, the first connecting chord beam is welded at the upper end of the side surface of the oblique support, the second connecting chord beam is welded at the lower end of the side surface of the oblique support, the outer end of the truss is installed with a reinforced steel truss bottom plate, and a limit plate is welded on the inner side of the reinforced steel truss bottom plate.

[0009] Preferably, the first connecting chord beam and the second connecting chord beam are both in the shape of long strips, and the length of the first connecting chord beam is shorter than that of the second connecting chord beam.

[0010] Preferably, the first connecting chord beam and the second connecting chord beam penetrate the truss and extend transversely to the side surfaces of the oblique supports, and both ends of the first connecting chord beam and the second connecting chord beam are respectively fixed to the side surfaces of the two groups of oblique supports.

[0011] Preferably, the first connecting chord beam, the second connecting chord beam and the two groups of oblique supports form a trapezoidal structure as a whole.

[0012] Preferably, two groups of reinforced steel truss bottom plates are provided, and the two groups of reinforced steel truss bottom plates are respectively installed on the surfaces of the upper and lower ends of the truss.

[0013] Preferably, the reinforced steel truss bottom plate is in a rectangular plane shape, and a rectangular groove is provided at the upper end of the truss, and both sides of the reinforced steel truss bottom plate vertically wrap around the side surfaces of the truss.

[0014] Preferably, a long strip of limiting plate is installed parallel to the inner surface of the reinforced steel truss bottom plate, the limiting plate is clamped at the outer end of the inner edge of the truss, and the reinforced steel truss bottom plate is clamped to the truss through the limiting plate.

[0015] Preferably, the surfaces of the reinforced steel truss bottom plate and the limiting plate are both provided with a plurality of groups of circular through holes for installing bolts.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. Unlike existing integrated subframe and chassis designs, this design divides the subframe into multiple trusses, allowing for both individual and integrated stress distribution. The first and second connecting chords form a trapezoidal structure with the two sets of diagonal supports, reducing support pressure between the upper and lower trusses and making the diagonal supports independent of each other. The first and second connecting chords share the lateral stress of the trusses, improving the stability of the subframe.

[0018] 2. The reinforced steel truss bottom plate is combined with the truss. Compared with traditional welding, the surface of the subframe is not easy to sink under stress, and the welding seams on the surface of the subframe are not easy to crack and be exposed. 3. During assembly, the reinforced steel truss bottom plate is connected to the truss, and the entire plate is laid on the truss, which can enhance the connection strength and avoid the stress being directly transferred to the diagonal support, thereby ensuring the safety and normal use of the structure. Moreover, compared with traditional direct welding, the plate on the surface of the subframe is easy to repair or replace after damage and dents, so that the mixer truck can be quickly restored to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the side sectional structure of the subframe of the present utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional connection structure between the truss and the reinforced steel truss bottom plate of the utility model;

[0023] Figure 4 This is a schematic diagram of the specific structure of the reinforced steel truss bottom plate of the present utility model.

[0024] [reference numerals]

[0025] 1-subframe; 2-front frame; 3-rear frame; 4-support frame; 5-pull frame; 6-mixing tank body; 101-truss; 102-oblique support; 103-connecting frame; 104-first connecting chord beam; 105-second connecting chord beam; 106-reinforced steel truss bottom plate; 107-limiting plate.

[0026] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0027] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 The embodiment of the utility model provides an enhanced concrete mixer truck subframe, which includes: a subframe 1, a front frame 2, a rear frame 3, a support frame 4, a pull frame 5 and a mixing tank body 6. The front end of the subframe 1 is installed with the front frame 2, the rear end of the subframe 1 is installed with the rear frame 3, the support frame 4 is installed between the rear frame 3 and the subframe 1, the pull frame 5 is installed on the rear frame 3 and the support frame 4, and the mixing tank body 6 is installed on the front frame 2 and the rear frame 3. The subframe 1 is composed of a truss 101, an oblique support 102, a connecting frame 10 3. The truss 101 is composed of a first connecting chord beam 104, a second connecting chord beam 105 and a reinforced steel truss bottom plate 106. The inner side of the truss 101 is welded with an oblique support 102, and the upper and lower ends of the inner side of the truss 101 are welded with a connecting frame 103. The upper end of the side of the oblique support 102 is welded with the first connecting chord beam 104, and the lower end of the side of the oblique support 102 is welded with the second connecting chord beam 105. The outer end of the truss 101 is installed with a reinforced steel truss bottom plate 106, and the inner side of the reinforced steel truss bottom plate 106 is welded with a limit plate 107.

[0028] In this embodiment, the first connecting chord beam 104 and the second connecting chord beam 105 are both in the shape of long strips, and the length of the first connecting chord beam 104 is shorter than that of the second connecting chord beam 105. The first connecting chord beam 104 and the second connecting chord beam 105 of different lengths can be connected to the upper and lower ends of the diagonal support 102 respectively.

[0029] In this embodiment, the first connecting chord beam 104 and the second connecting chord beam 105 penetrate the truss 101 and extend laterally to the side surfaces of the diagonal supports 102 , and both ends of the first connecting chord beam 104 and the second connecting chord beam 105 are respectively fixed to the side surfaces of the two groups of diagonal supports 102 .

[0030] In this embodiment, the first connecting chord 104, the second connecting chord 105, and the two groups of diagonal supports 102 form a trapezoidal structure as a whole, which can improve the stability of the truss 101. The first connecting chord 104, the second connecting chord 105 and the two groups of diagonal supports 102 form a trapezoidal structure as a whole, which can reduce the support pressure between the upper and lower parts of the truss 101, making the diagonal supports 102 independent of each other. The first connecting chord 104, the second connecting chord 105 share the lateral stress of the truss 101, and the stability of the subframe 1 can be improved.

[0031] In this embodiment, two groups of reinforced steel truss bottom plates 106 are provided, and the two groups of reinforced steel truss bottom plates 106 are respectively installed on the upper and lower surfaces of the truss 101, so that the upper and lower surfaces of the truss 101 are flat.

[0032] In this embodiment, the reinforced steel truss bottom plate 106 is in a rectangular plane shape, and a rectangular groove is provided at the upper end of the truss 101, and the two sides of the reinforced steel truss bottom plate 106 vertically wrap the side surfaces of the truss 101. The reinforced steel truss bottom plate 106 is combined with the truss 101. Compared with traditional welding, the surface of the sub-frame 1 is not easily sunken by force, and the weld seam on the surface of the sub-frame 1 is not easily cracked and exposed to the outside.

[0033] In this embodiment, a long strip of limiting plate 107 is installed parallel to the inner surface of the reinforced steel truss bottom plate 106. The limiting plate 107 is clamped at the outer end of the inner edge of the truss 101, and the reinforced steel truss bottom plate 106 is clamped to the truss 101 through the limiting plate 107.

[0034] In this embodiment, the surfaces of the reinforced steel truss bottom plate 106 and the limit plate 107 are provided with several groups of circular through holes for installing bolts, which can improve the strength of the sub-frame 1. During assembly, the reinforced steel truss bottom plate 106 is connected to the truss 101 and is entirely laid on the truss 101, which can enhance the connection strength and avoid direct stress transmission to the diagonal support 102, thereby ensuring the safety and normal use of the structure. Moreover, compared with traditional direct welding, the plate on the surface of the sub-frame 1 is easy to repair or replace after damage and denting, so that the mixer truck can be quickly restored to service.

Claims

1. A reinforced concrete mixer truck subframe, characterized in that: include: A sub-frame (1), a front frame (2), a rear frame (3), a support frame (4), a pull frame (5) and a mixing tank body (6); the front end of the sub-frame (1) is installed with the front frame (2); the rear end of the sub-frame (1) is installed with the rear frame (3); a support frame (4) is installed between the rear frame (3) and the sub-frame (1); a pull frame (5) is installed on the rear frame (3) and the support frame (4); the mixing tank body (6) is installed on the front frame (2) and the rear frame (3); the sub-frame (1) is composed of a truss (101), an oblique support (102), a connecting frame (103), a first connecting chord beam ( 104), a second connecting chord beam (105) and a reinforced steel truss bottom plate (106), the inner side of the truss (101) is welded with an oblique support (102), the upper and lower ends of the inner side of the truss (101) are welded with a connecting frame (103), the upper end of the side of the oblique support (102) is welded with a first connecting chord beam (104), the lower end of the side of the oblique support (102) is welded with a second connecting chord beam (105), the outer end of the truss (101) is installed with a reinforced steel truss bottom plate (106), and the inner side of the reinforced steel truss bottom plate (106) is welded with a limit plate (107).

2. The reinforced concrete mixer truck subframe according to claim 1, characterized in that: The first connecting chord beam (104) and the second connecting chord beam (105) are both in the shape of long strips, and the length of the first connecting chord beam (104) is shorter than the length of the second connecting chord beam (105).

3. The reinforced concrete mixer truck subframe according to claim 1, characterized in that: The first connecting chord beam (104) and the second connecting chord beam (105) penetrate the truss (101) and extend laterally to the side surfaces of the oblique supports (102), and the two ends of the first connecting chord beam (104) and the second connecting chord beam (105) are respectively fixed to the side surfaces of the two groups of oblique supports (102).

4. The reinforced concrete mixer truck subframe according to claim 1, characterized in that: The first connecting chord beam (104), the second connecting chord beam (105) and the two groups of oblique supports (102) form a trapezoidal structure as a whole.

5. The reinforced concrete mixer truck subframe according to claim 1, characterized in that: Two groups of the reinforced steel truss bottom plates (106) are provided, and the two groups of reinforced steel truss bottom plates (106) are respectively installed on the surfaces of the upper and lower ends of the truss (101).

6. The reinforced concrete mixer truck subframe according to claim 1, characterized in that: The reinforced steel truss bottom plate (106) is in a rectangular plane shape, and a rectangular groove is provided at the upper end of the truss (101), and both sides of the reinforced steel truss bottom plate (106) vertically wrap around the side surfaces of the truss (101).

7. The reinforced concrete mixer truck subframe according to claim 1, characterized in that: A long strip-shaped limiting plate (107) is installed parallel to the inner surface of the reinforced steel truss bottom plate (106), and the limiting plate (107) is clamped at the outer end of the inner edge of the truss (101), and the reinforced steel truss bottom plate (106) is clamped with the truss (101) through the limiting plate (107).

8. The reinforced concrete mixer truck subframe according to claim 1, characterized in that: The surfaces of the reinforced steel truss bottom plate (106) and the limiting plate (107) are both provided with a plurality of groups of circular through holes for installing bolts.

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