CN210554389U - Lower support of oil cylinder of dumper - Google Patents
Lower support of oil cylinder of dumper Download PDFInfo
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- CN210554389U CN210554389U CN201921120085.1U CN201921120085U CN210554389U CN 210554389 U CN210554389 U CN 210554389U CN 201921120085 U CN201921120085 U CN 201921120085U CN 210554389 U CN210554389 U CN 210554389U
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- shaft sleeve
- supporting shaft
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Abstract
The utility model relates to a lower bracket of a dumper oil cylinder, which comprises a vertical plate, a top plate, a bottom plate and a side plate, wherein a supporting shaft sleeve is arranged on the vertical plate; and a V-shaped reinforcing plate is arranged between the vertical plate and the supporting shaft sleeve. The utility model has the advantages that: the vertical plate and the supporting shaft sleeve are connected by the V-shaped reinforcing plate, so that the stress state of the structure is improved, the welding between the top plate and the side plate is enhanced, and the fracture resistance of a welding seam is improved. The bearing capacity and the structural strength of the lower support of the oil cylinder can be obviously improved, and the support shaft hole of the lower support of the oil cylinder can be prevented from being out of round.
Description
Technical Field
The utility model belongs to self-discharging vehicle elevating system especially relates to a tipper hydro-cylinder lower carriage.
Background
The dump truck is one of the main transportation vehicles, and is often used in complicated and severe working conditions such as constructional engineering and the like. The dump truck jacks up the truck hopper through the oil cylinder, and the lower support of the oil cylinder is complex in stress and bears huge load in the lifting working process of the truck hopper. In order to meet the structural and strength design, almost all dump trucks in use at present refer to the structure of the international known brand "Haiwo", the main structure of which comprises a vertical plate and four reinforcing ribs for connecting the vertical plate and a supporting shaft sleeve, and the structure is light and firm. But also has the condition of a plurality of damages in the using process, which is mainly shown in the out-of-roundness of the bearing hole, bending deformation, cracking of welding line, out-of-roundness of the supporting shaft hole and severe abrasion of the lifting lug of the oil cylinder. According to the maximum six-axle vehicle-mounted weight of 33 tons in China, the lower support of the oil cylinder cannot have the faults according to the design principle. However, due to the complexity of the environment in which the dump truck is used, damage may still occur when the dump truck is overloaded and unloaded from uneven roads.
Disclosure of Invention
The utility model aims at providing a technical scheme of tipper hydro-cylinder lower carriage improves the structure of tipper hydro-cylinder lower carriage, improves its bearing capacity and life.
In order to realize the purpose, the technical scheme of the utility model is that: a lower support of an oil cylinder of a dump truck comprises a vertical plate, a top plate, a bottom plate and side plates, wherein a supporting shaft sleeve is arranged on the vertical plate; and a V-shaped reinforcing plate is arranged between the vertical plate and the supporting shaft sleeve.
Furthermore, in order to obtain good structural strength and rigidity, the V-shaped reinforcing plate comprises an end plate and oblique side plates arranged at two ends of the end plate, the end plate is provided with a shaft sleeve opening corresponding to the outer diameter of the supporting shaft sleeve, the supporting shaft sleeve is inserted into the shaft sleeve opening and welded with the end plate, and the two oblique side plates are welded with the vertical plate.
Furthermore, the preferable technical scheme is that the width of the end plate is 1.4 to 1.5 times of the outer diameter of the supporting shaft sleeve, and the included angle between the inclined side plate and the vertical plate is 45 degrees.
Furthermore, in order to obtain better structural strength, a first reinforcing rib is arranged between the inclined side plate and the vertical plate.
Still further, it is more effective that the first reinforcing bead is also connected to the side plate.
Furthermore, the upper side edge of the V-shaped reinforcing plate is welded with the top plate, and the lower side edge of the V-shaped reinforcing plate is welded with the bottom plate.
Furthermore, in order to improve the structural connection strength of the side plate and the top plate, a welding groove is formed in the upper edge of the outer side of the side plate, and the side plate is welded with the top plate in the welding groove through a first welding seam.
Furthermore, in order to avoid influencing the installation of the lower bracket of the oil cylinder, the first welding line is recessed into the welding groove.
Furthermore, in order to obtain good structural performance and light structural weight, the top plate, the bottom plate and the side plates are welded by steel plates with the thickness of 16mm, and the vertical plates and the V-shaped reinforcing plates are welded by steel plates with the thickness of 10 mm.
The utility model has the advantages that: the vertical plate and the supporting shaft sleeve are connected by the V-shaped reinforcing plate, so that the stress state of the structure is improved, the welding between the top plate and the side plate is enhanced, and the fracture resistance of a welding seam is improved. The bearing capacity and the structural strength of the lower support of the oil cylinder can be obviously improved, and the support shaft hole of the lower support of the oil cylinder can be prevented from being out of round.
The present invention will be described in detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a structural view of the present invention, which is a view from the direction A of FIG. 1;
fig. 3 is an exploded view of the present invention;
fig. 4 is a cross-sectional view of the present invention;
FIG. 5 is a schematic view of the installation of the present invention on a dumper girder;
FIG. 6 is an exploded view of the structure of FIG. 5;
FIG. 7 is a structural diagram of a lower bracket of a dumper oil cylinder of the original design;
FIG. 8 is a schematic view of the lower bracket of the oil cylinder of the dump truck in the prior design;
fig. 9 is a schematic view of the stress of the lower bracket of the oil cylinder of the dump truck.
Detailed Description
As shown in fig. 1 to 4, a lower support of an oil cylinder of a dump truck comprises a vertical plate 10, a top plate 20, a bottom plate 30 and a side plate 40, wherein a supporting shaft sleeve 50 is arranged on the vertical plate; a V-shaped reinforcing plate 60 is arranged between the vertical plate and the supporting shaft sleeve.
The V-shaped reinforcing plate structurally comprises an end plate 61 and oblique side plates 62 arranged at two ends of the end plate, wherein the end plate is provided with a shaft sleeve opening 63 corresponding to the outer diameter of the supporting shaft sleeve, the supporting shaft sleeve is inserted into the shaft sleeve opening and welded with the end plate, and the two oblique side plates are welded with the vertical plate.
the width W of the end plate is 1.4-1.5 times of the outer diameter d of the supporting shaft sleeve, and the included angle α between the inclined side plate and the vertical plate is 45 degrees.
And a first reinforcing rib 11 is arranged between the inclined side plate and the vertical plate.
The first reinforcing rib is further connected with the side plate.
The upper side edge of the V-shaped reinforcing plate is welded with the top plate, and the lower side edge of the V-shaped reinforcing plate is welded with the bottom plate.
And a welding groove 41 is formed in the upper edge of the outer side of the side plate, and the side plate is welded with the top plate in the welding groove through a first welding seam 42.
The first weld is recessed into the weld groove.
The top plate, the bottom plate and the side plates are welded by steel plates with the thickness of 16mm, and the vertical plates and the V-shaped reinforcing plates are steel plates with the thickness of 10 mm.
The first embodiment is as follows:
as shown in fig. 5 and 6, the dump truck jacks up the truck hopper through the oil cylinder 70, the lower end of the oil cylinder is connected with a lower oil cylinder bracket through two ends of a rotating shaft 71, the lower oil cylinder bracket is provided with a supporting shaft sleeve 50, and the supporting shaft sleeve is provided with a supporting shaft hole 51 and connected with the rotating shaft 71. As shown in fig. 7 and 8, the structure of the lower oil cylinder bracket of the dump truck at present comprises an upright plate 10, a top plate 20, a bottom plate 30 and side plates 40 which are welded together, wherein an upper reinforcing rib 72 is arranged between a supporting shaft sleeve and the upright plate and the top plate, a lower reinforcing rib 73 is arranged between the supporting shaft sleeve and the upright plate and the bottom plate, and a side reinforcing rib 74 is arranged between the supporting shaft sleeve and the upright plate and the two side plates. The two cylinder lower brackets are fixed on a vehicle girder 76 through an underframe 75, mounting holes 44 are formed on side plates, the underframe is provided with bolt holes 77, the side plates are fixed on the underframe through bolts 78, and the underframe supports the top plate 20 of the cylinder lower bracket at both ends.
According to the design principle, the lower bracket of the oil cylinder can meet the structural strength of the supporting oil cylinder. However, the lower support of the oil cylinder of the dump truck is complex in stress and bears huge load. However, due to the complexity of the environment in which dump trucks are used, damage may still occur over a period of time in work environments that often experience heavy overloading and rough road unloading. The damage occurs mainly at the welded portion 76 of the top and side plates, resulting in weld cracking. The radial analysis shows that when the supporting shaft sleeve 50 of the lower bracket of the oil cylinder is subjected to the downward acting force F of the oil cylinder, the two ends of the top plate can generate upward reaction force F1, the supporting shaft sleeve can generate certain elastic deformation, the elastic deformation of the supporting shaft sleeve can drive the top plate to generate elastic bending through the upper reinforcing rib 72, the elastic bending generates torque at the welding position 76 of the top plate and the side plate, the torque can seriously affect the welding seam, and the fatigue cracking can be generated on the welding seam of the welding position 76 through the torque which is repeatedly performed for many times in a long period. There have been some improved technical solutions to increase the number of the reinforcing ribs from four to six, but the effect is still not ideal enough, and the defect of weld cracking cannot be completely overcome.
As shown in fig. 1 to 4, in order to overcome the above-mentioned defects of the lower support of the oil cylinder, the utility model provides a technical scheme of the lower support of the oil cylinder of the dumper. The oil cylinder lower bracket comprises a vertical plate 10, a top plate 20, a bottom plate 30 and a side plate 40. The vertical plates, the top plate, the bottom plate and the side plates form a frame structure and are connected together through welding. The vertical plate is provided with an opening 12, a supporting shaft sleeve 50 is arranged in the opening 12, the supporting shaft sleeve is provided with a supporting shaft hole 51, and the supporting shaft hole is in rotating fit with a rotating shaft 71 of the oil cylinder. The supporting shaft sleeve is welded with the vertical plate, and the axis of the supporting shaft sleeve is perpendicular to the plate surface of the vertical plate.
In this embodiment, the riser adopts 10mm thickness steel sheet, and roof, bottom plate and curb plate adopt 16mm thickness steel sheet. In order to strengthen the structural strength of the welding part of the top plate and the side plate, the outer side upper edge of the side plate is provided with a welding groove 41, the side plate is welded with the top plate in the welding groove through a first welding seam 42, the first welding seam is recessed into the welding groove, and does not protrude out of the plate surface of the side plate, so that the installation on the underframe 75 is prevented from being influenced. And welding 43 is also performed on the inside of the top plate and the side plates.
the V-shaped reinforcing plate 60 is arranged between the vertical plate and the supporting shaft sleeve, the V-shaped reinforcing plate is a steel plate with the thickness of 10mm, the structure of the V-shaped reinforcing plate comprises an end plate 61 and oblique side plates 62 arranged at two ends of the end plate, the end plate is provided with a shaft sleeve opening 63 corresponding to the outer diameter of the supporting shaft sleeve, the supporting shaft sleeve is inserted into the shaft sleeve opening and is welded with the end plate, the two oblique side plates are welded with the vertical plate, the upper side edge of the V-shaped reinforcing plate is welded with the top plate, the lower side edge of the V-shaped reinforcing plate is welded with the bottom plate, in order to obtain good structural strength and rigidity, the width W of the end plate is 1.4-1.5 times of the outer diameter d of the supporting shaft sleeve, and the.
In order to obtain better structural strength, a first reinforcing rib 11 is arranged between the inclined side plate and the vertical plate. The first reinforcing rib is also connected with the side plate. And a second reinforcing rib 13 is also arranged on the other side of the vertical plate and between the vertical plate and the side plate.
The utility model discloses an improvement that the structure is showing the structural strength and the bearing capacity of hydro-cylinder lower carriage. As shown in fig. 9, due to the use of the V-shaped reinforcing plate, when the supporting shaft sleeve 50 of the lower bracket of the oil cylinder receives the downward acting force F of the oil cylinder, the supporting shaft sleeve applies the acting force F2 to the two sides of the top plate through the V-shaped reinforcing plate, so that the elastic bending deformation of the top plate can be remarkably reduced, and the stress state of the welding part of the top plate and the side plate can be greatly improved. In experiment and practical application, adopt the utility model discloses a welding seam fracture phenomenon at roof and curb plate welding position has not taken place yet to the hydro-cylinder lower carriage. And the support shaft hole of the lower bracket of the oil cylinder can be prevented from being out of round. Meanwhile, the lightweight characteristic of the lower support of the oil cylinder is kept.
Claims (9)
1. A lower support of an oil cylinder of a dump truck comprises a vertical plate, a top plate, a bottom plate and side plates, wherein a supporting shaft sleeve is arranged on the vertical plate; the support is characterized in that a V-shaped reinforcing plate is arranged between the vertical plate and the support shaft sleeve.
2. The lower oil cylinder bracket of the dump truck as defined in claim 1, wherein the V-shaped reinforcing plate comprises an end plate and inclined side plates arranged at two ends of the end plate, the end plate is provided with a shaft sleeve opening corresponding to the outer diameter of the supporting shaft sleeve, the supporting shaft sleeve is inserted into the shaft sleeve opening and welded to the end plate, and the two inclined side plates are welded to the vertical plate.
3. The lower bracket for the oil cylinder of the dump truck as claimed in claim 2, wherein the width of the end plate is 1.4 to 1.5 times the outer diameter of the support shaft sleeve, and the included angle between the inclined side plate and the vertical plate is 45 °.
4. The lower bracket for the oil cylinder of the dump truck as defined in claim 2, wherein a first reinforcing rib is arranged between the inclined side plate and the vertical plate.
5. The lower bracket for the oil cylinder of the dump truck as claimed in claim 4, wherein the first reinforcing rib is further connected with the side plate.
6. The lower bracket for the oil cylinder of the dump truck as defined in claim 1, wherein the upper side edge of the V-shaped reinforcing plate is welded to the top plate, and the lower side edge of the V-shaped reinforcing plate is welded to the bottom plate.
7. The lower bracket for the oil cylinder of the dump truck as defined in claim 1, wherein a welding groove is formed at an upper edge of an outer side of the side plate, and the side plate is welded to the top plate in the welding groove through a first welding seam.
8. The lower bracket for the oil cylinder of the dump truck according to claim 7, wherein the first welding seam is recessed into the welding groove.
9. The lower bracket for the oil cylinder of the dump truck as defined in claim 1, wherein the top plate, the bottom plate and the side plates are welded by steel plates with a thickness of 16mm, and the vertical plate and the V-shaped reinforcing plate are steel plates with a thickness of 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120085.1U CN210554389U (en) | 2019-07-17 | 2019-07-17 | Lower support of oil cylinder of dumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120085.1U CN210554389U (en) | 2019-07-17 | 2019-07-17 | Lower support of oil cylinder of dumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210554389U true CN210554389U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921120085.1U Active CN210554389U (en) | 2019-07-17 | 2019-07-17 | Lower support of oil cylinder of dumper |
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| CN (1) | CN210554389U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115123050A (en) * | 2022-07-21 | 2022-09-30 | 南理工泰兴智能制造研究院有限公司 | Mining dump truck lifting oil cylinder support connecting structure |
-
2019
- 2019-07-17 CN CN201921120085.1U patent/CN210554389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115123050A (en) * | 2022-07-21 | 2022-09-30 | 南理工泰兴智能制造研究院有限公司 | Mining dump truck lifting oil cylinder support connecting structure |
| CN115123050B (en) * | 2022-07-21 | 2024-02-09 | 南理工泰兴智能制造研究院有限公司 | Mining dump truck lifting cylinder support connecting structure |
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