High-concentricity dumper turnover shaft assembly

Abstract

The utility model discloses a high concentricity dumper turnover shaft assembly which comprises at least two turnover shaft supports, turnover shafts matched with the turnover shaft supports and turnover sleeves coaxially connected with the turnover shafts, the turnover shaft supports are fixedly installed at the bottom of a carriage, and each turnover shaft support comprises a fixing plate, a pair of end plates, a reinforcing plate and a fixedly-installed shaft sleeve; the turnover shafts are coaxially installed at the two ends of the turnover sleeve and fixed relative to the turnover sleeve, and the outer ends of the turnover shafts are rotationally installed in the shaft sleeves of the turnover shaft supports at the corresponding ends. According to the utility model, the structure is simple, the design is reasonable, the arrangement of the high-concentricity overturning shaft assembly can ensure that the two ends of the cargo compartment of the dumper are synchronously lifted and overturned, and the effective length of the overturning shaft assembly can reach 1650mm, so that the deviation and shaking are effectively avoided, the service life is prolonged, and the later maintenance is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating coupling pairs of dump trucks, and particularly relates to a tipping shaft assembly of a dump truck with high concentricity. Background Art

[0002] A dump truck refers to a vehicle that can unload goods by itself through hydraulic or mechanical lifting, also known as a tipping truck, which is composed of components such as an automobile chassis, a hydraulic lifting mechanism, a cargo box, and a power take-off device. The lifting and tipping of the cargo box of the dump truck also rely on the cooperation of the structure of the tipping shaft assembly. At present, in the upper-mounted industry of dump trucks, when using the tipping shaft assembly of a dump truck, multiple independent short-distance rotating shafts are usually used to complete the connection between one side of the cargo box and the vehicle frame. At the same time, the corresponding tipping shaft brackets are all integrally formed tipping seats by welding or casting and are not detachable; and when assembling multiple independent short-distance rotating shafts, it is easy to occur the phenomenon of non-coaxial rotating shafts caused by inaccurate positioning, which results in the offset and shaking of the cargo box during tipping, making the lifting and tipping difficult, easily damaging components, reducing its service life, and increasing the later maintenance cost at the same time. Content of the Utility Model

[0003] The purpose of the utility model is to solve the deficiencies existing in the above-mentioned prior background art and provide a tipping shaft assembly of a dump truck with high concentricity.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: a tipping shaft assembly of a dump truck with high concentricity, including at least two tipping shaft supports, a tipping shaft adapted to the tipping shaft supports, and a tipping sleeve coaxially connecting the tipping shafts. Among them, the tipping shaft supports are fixedly installed at the bottom of the carriage, including a fixing plate, a pair of end plates, a reinforcing plate, and a fixedly installed shaft sleeve; the tipping shafts are coaxially installed at both ends of the tipping sleeve and are relatively fixed thereto, and the outer ends of the tipping shafts are rotatably installed in the shaft sleeves of the corresponding tipping shaft supports at the corresponding ends.

[0005] Further, a plurality of welding hole through-holes arranged circumferentially are provided at the end of the tipping sleeve. When the tipping shaft is inserted into the tipping sleeve, concentric fixation between the two is achieved through riveting welding, and the weld degrees in the plurality of welding hole through-holes are the same.

[0006] Further, an annular lubricating groove is provided on the outer circumference of the outer end of the tipping shaft; an end cover is fixedly installed on the outer side of the outer end plate of the corresponding tipping shaft support through bolts.

[0007] As another technical solution of the tipping shaft assembly of a dump truck with high concentricity of the utility model, a slidable telescopic fixed connection is made between the tipping shaft and the tipping sleeve.

[0008] Further, at least two guide rails along its length direction are fixedly arranged on the inner side wall of the flipping sleeve, and multiple guide rails are fixedly arranged at equal intervals in the circumferential direction of the flipping sleeve; correspondingly, multiple guide grooves adapted to the guide rails are arranged on the outer circumferential side wall of the inner end of the flipping shaft, and the flipping shaft is slidably installed on the guide rails of the flipping sleeve and is tightly assembled with the flipping sleeve with equal shaft diameters.

[0009] A coaxial fixed abutting plate is also fixedly arranged inside the flipping sleeve, and a spring is abutted between the fixed abutting plate and the inner end face of the flipping shaft; a positioning hole is also arranged at the end of the flipping sleeve, and correspondingly, a positioning through hole is arranged on the flipping shaft, and the relative fixation between the flipping shaft and the flipping sleeve is completed by passing a bolt through the positioning hole and the positioning through hole.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the structure of the utility model is simple and reasonable. The setting of the flipping shaft assembly with high concentricity can ensure the synchronous lifting and flipping of both ends of the dump truck cargo box, and the effective length of the flipping shaft assembly can reach 1650 mm, effectively avoiding deviation and shaking, improving the service life and reducing the later maintenance. At the same time, the flipping shaft support is fixed to the bottom of the cargo box through the bolt holes on the fixing plate and the matching bolts, which is also convenient for disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the overall structure schematic diagram of the utility model;

[0012] Figure 2 is the assembly structure schematic diagram of the flipping shaft and the flipping sleeve in the utility model;

[0013] Figure 3 is the structure schematic diagram of the flipping shaft support in the utility model;

[0014] Figure 4 is the structure schematic diagram of another embodiment of the utility model;

[0015] Figure 5 is Figure 4 the end view of the flipping sleeve in the structure of the embodiment in;

[0016] Figure 6 is Figure 4 the structure schematic diagram of the flipping shaft in the structure of the embodiment in;

[0017] Figure 7 is Figure 4 the longitudinal central cross-sectional view of the flipping sleeve in the structure of the embodiment in;

[0018] In the figure: 1. Rotating shaft support, 2. Rotating sleeve, 3. Rotating shaft, 4. Positioning bolt, 11. Fixed plate, 12. End plate, 13. Bush, 14. Connecting hole, 21. Welding point through hole, 22. Guide rail, 23. Fixed abutting plate, 24. Spring, 31. Annular lubricating groove, 32. Guide groove, 33. Positioning through hole. Detailed implementation mode

[0019] It should be noted that in the description of the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only relationship words determined for the convenience of describing the structural relationship of each component in the present invention, and do not specifically refer to any component in the present invention that must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation to the present invention.

[0020] In addition, in the description of the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", etc. 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 directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The following further details the specific implementation mode of the present invention with reference to the drawings:

[0022] Embodiment 1

[0023] As Figures 1 to 3As shown in the figure, a high-concentricity tipping shaft assembly for a dump truck is applied between the frame and the cargo box of the dump truck. It includes two tipping shaft supports 1, two tipping shafts 3 adapted to the tipping shaft supports 1, and a tipping sleeve 2 coaxially connecting the two tipping shafts 3. The tipping shaft support 1 includes a fixing plate 11, a pair of end plates 12, a reinforcing plate, and a fixedly installed bushing 13. The pair of end plates 12 are respectively welded and fixed to the bottom of the fixing plate 11, arranged along its length direction, spaced apart and parallel to each other, and perpendicular to the fixing plate 11. A pair of concentric mounting holes are provided on the pair of end plates 12, and the bushing 13 is inserted and fixed in the mounting holes. Reinforcing plates are welded and fixed between the pair of end plates 12, between the bottom of the fixing plate 11 and the outer peripheral side wall of the bushing 13, respectively located on the left and right sides of the bushing 13, for strengthening the strength of the tipping shaft support 1. Two rows of symmetrically arranged connection holes 14 are also provided on the fixing plate 11, for detachable connection and fixation by bolts and nuts when the tipping shaft support 1 is installed on the cargo box bottom plate. The inside of the tipping sleeve 2 is hollow and both ends are open. The two tipping shafts 3 are respectively inserted into the two ends of the tipping sleeve 2, arranged coaxially and concentrically. At the same time, a plurality of symmetrically arranged welding hole through-holes 21 are provided around the circumferences of the two ends of the tipping sleeve 2, and the tipping shafts 3 and the tipping sleeve 2 are coaxially fixedly connected by riveting welding. The weld widths in each welding hole through-hole 21 are the same to prevent eccentric rotation. An annular lubricating groove 31 is provided around the outer circumferential side wall of the outer end of the tipping shaft 3.

[0024] When in use, the above-mentioned tipping shaft assembly fixes the two tipping shaft supports 1 at both ends of the corresponding positions at the bottom of the cargo box by bolts. The outer end of the tipping shaft 3 is inserted into the bushing 13 in the middle axis of the corresponding tipping shaft support 1 and is rotatably connected to the bushing 13. The length of the tipping sleeve 2 is integrated, improving the high-concentricity rotation of the two tipping shafts 3 at both ends, being relatively balanced and having stable tipping.

[0025] On the outer side wall of the tipping shaft support 1 and outside the bushing 13, a shaft end cover is fixedly installed by bolts to improve the dust-proof performance and prevent dust and fine particles from entering and damaging the components.

[0026] Embodiment 2,

[0027] Combined with Figures 4 to 7 As shown in the figure, a high-concentricity tipping shaft assembly for a dump truck is applied between the frame and the cargo box of the dump truck. It includes two tipping shaft supports 1, two tipping shafts 3 adapted to the tipping shaft supports 1, and a tipping sleeve 2 coaxially connecting the two tipping shafts 3. The overall structure is basically the same as the technical solution described in the above Embodiment 1. The difference between the two is that a slidable and telescopic fixed connection is made between the tipping shaft 3 and the tipping sleeve 2, enabling the tipping shaft 3 to complete rapid assembly and disassembly with the tipping shaft support 1. The specific structure is as follows.

[0028] Both ends of the flipping sleeve 2 are open and its interior is hollow. Two guide rails 22 along its length direction are fixedly arranged on its inner side wall. The length of the guide rail 22 is shorter than the total length of the flipping sleeve 2, and the two guide rails 22 are evenly spaced circumferentially around it and are convexly fixed. At the same time, fixed abutting plates 23 with equal shaft diameters are respectively fixedly installed inside the two ends of the flipping sleeve 2. The length of the fixed abutting plate 23 from the same end side pipe orifice is slightly greater than the length of the flipping shaft 3. On the circumferential side wall of the flipping shaft 3, starting from its inner end, guide grooves 32 adapted to the above two guide rails 22 are provided and are arranged along the length extension of the flipping shaft 3. The flipping shaft 3 is slidably installed at the end of the flipping sleeve 2 through the cooperation of the guide grooves 32 and the guide rails 22, and the outer side wall of the flipping shaft 3 is closely slidably attached to the inner side wall of the flipping sleeve 2 without leaving a gap, ensuring high concentricity of the two end flipping shafts 3. A spring 24 is installed between the inner end of the flipping shaft 3 and the fixed abutting plate 23 on the same side. One end of the spring 24 is fixedly abutted against the fixed abutting plate 23, and the other end abuts against the inner end of the flipping shaft 3. A through positioning through hole 33 with internal threads is further provided on the side wall of the flipping shaft 3. Correspondingly, positioning holes are provided on the side walls of the two ends of the flipping sleeve 2. When the flipping shaft 3 extends outwards, the positioning through hole 33 on it is aligned with the positioning holes on the flipping sleeve 2, and the relative fixation of the flipping shaft 3 and the flipping sleeve 2 is completed by sequentially passing through the positioning bolts 4.

[0029] While playing a guiding role for the flipping shaft 3, the above guide rails 22 also strengthen the strength of the flipping sleeve 2, prevent it from twisting and breaking, and enable the flipping shaft assembly to support high-concentricity rotation of a longer length.

[0030] Certainly, the above description is not a limitation to the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the substantial scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. High concentricity dump truck tilting shaft assembly, characterized by: It includes at least two flip shaft supports, a flip shaft matched with the flip shaft supports and a flip sleeve coaxially connected to each flip shaft, wherein the flip shaft support is fixedly installed on the bottom of the car body, and includes a fixed plate, a pair of end plates, a reinforcement plate and a fixedly installed sleeve; the flip shaft is coaxially installed at both ends of the flip sleeve and fixed relatively thereto, and the outer end of the flip shaft is rotatably installed in the sleeve of the flip shaft support at the corresponding end.

2. The high concentricity dump truck tilting axle assembly according to claim 1, characterized in that: The end of the flip sleeve is provided with a plurality of welding point through holes arranged circumferentially. When the flip shaft is inserted into the flip sleeve, the two are concentrically fixed by riveting, and the welds in the plurality of welding point through holes are consistent.

3. The high concentricity dump truck tilting axle assembly according to claim 1, characterized in that: An annular lubrication groove is provided on the peripheral side of the outer end of the flip shaft; and a shaft end cover is fixedly installed on the outer side of the outer end plate of the corresponding flip shaft support by bolts.

4. The high concentricity dump truck tilting axle assembly according to claim 1, characterized in that: The turning shaft and the turning sleeve are slidably, telescopically and fixedly connected.

5. The high concentricity dump truck tilting axle assembly according to claim 4, characterized in that: At least two guide rails are fixedly arranged on the inner side wall of the flip sleeve along its length direction, and the multiple guide rails are equidistantly arranged and fixed in the circumferential direction of the flip sleeve; correspondingly, the outer peripheral side wall of the inner end of the flip shaft is provided with multiple guide grooves adapted to the guide rails, and the flip shaft is slidably installed on the guide rails of the flip sleeve and is tightly assembled with equal axial diameters between the flip sleeves; A coaxial fixed abutment is fixed inside the flip sleeve, and a spring is arranged between the fixed abutment and the inner end surface of the flip shaft; a positioning hole is also arranged at the end of the flip sleeve, and correspondingly, a positioning through hole is arranged on the flip shaft, and the relative fixation between the flip shaft and the flip sleeve is achieved by passing a bolt through the positioning hole and the positioning through hole.

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