CN110984280B - Front frame of loader - Google Patents
Front frame of loader Download PDFInfo
- Publication number
- CN110984280B CN110984280B CN201911186855.7A CN201911186855A CN110984280B CN 110984280 B CN110984280 B CN 110984280B CN 201911186855 A CN201911186855 A CN 201911186855A CN 110984280 B CN110984280 B CN 110984280B
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- Prior art keywords
- plate
- side plate
- outer side
- loader
- front frame
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/08—Superstructures; Supports for superstructures
- E02F9/0841—Articulated frame, i.e. having at least one pivot point between two travelling gear units
Abstract
The invention discloses a front frame of a loader, which relates to the technical field of engineering machinery and comprises two wing boxes symmetrically connected to the left side and the right side of a front sealing plate, wherein each wing box comprises an inner side plate, an upper outer side plate and a lower outer side plate; an intermediate connecting plate for dividing the wing box into an upper box body and a lower box body is arranged between the upper outer side plate and the lower outer side plate, and an upper connecting bent plate is connected between the intermediate connecting plate and the upper rear sealing plate; and the upper outer side plate and the inner side plate are oppositely provided with hinge holes for connecting the movable arms. Compared with the prior art, the upper box body and the lower box body are of box-type structures with high strength, so that even if the lifting capacity of the loader is increased, the stress around a hinge hole for connecting the wing box and the movable arm is small, and the potential safety hazard of cracking is eliminated. Lower back shrouding is with the material thicker than traditional back shrouding, and the increase cost is very little.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a front frame of a loader.
Background
The front frame of the loader is a mechanism for connecting the rear frame, the front axle and the working device, and is an important bearing part of the loader. The traditional front frame of the loader comprises two wing boxes symmetrically connected to the left side and the right side of a front seal plate, and an upper hinged support and a lower hinged support are arranged at the rear part of the front seal plate; the wing box comprises an inner side plate and an outer side plate, the rear part of the outer side plate is connected with the inner side plate through a rear sealing plate, hinge holes used for being connected with the movable arm are oppositely formed in the upper parts of the inner side plate and the outer side plate, reinforcing lug plates are correspondingly arranged at the hinge holes, and bosses are arranged on the reinforcing lug plates along the edges of the hinge holes; two rotary bucket cylinder supports are oppositely arranged at the upper part of the front sealing plate, and mounting holes for mounting the rotary bucket cylinders are oppositely arranged on the rotary bucket cylinder supports and the adjacent inner side plate; and a reinforcing rib connected with the inner side plate is arranged in the middle of the rear sealing plate. Along with the increase of the tonnage of the loader, the rise of the rotary bucket is larger and larger, the lifting capacity of the loader is increased, so that the stress around a hinge hole for being connected with a movable arm on a wing box of a front frame of the traditional loader is very large, and the potential safety hazard of cracking exists when the position is not well reinforced. When a new movable arm cylinder mounting structure is adopted, the mounting position of the movable arm cylinder is changed, the movable arm cylinder needs to extend backwards out of the rear sealing plate, an opening avoiding the movable arm cylinder is formed in the lower portion of the rear sealing plate, the rear sealing plate cannot be widened due to the limitation of the space of the whole machine, and therefore the bearing plate portions on two sides of the opening of the rear sealing plate are very narrow, and the strength is very weak. In order to increase intensity, the rear sealing plate is made of a material thicker than the conventional rear sealing plate, the area of the whole rear sealing plate is large, and the cost is very high for the whole front frame.
Disclosure of Invention
The invention aims to solve the problem that the increase of the lifting capacity of a loader causes very large stress around a hinge hole used for being connected with a movable arm on a wing box, and the potential safety hazard of cracking exists at the position; when adopting new movable arm jar mounting structure, need to make the back shrouding with the material that traditional back shrouding is thick, problem that the cost is very high.
In order to solve the problems, the invention adopts the technical scheme that: the front frame of the loader comprises two rotating bucket cylinder supports and two wing boxes symmetrically connected to the left side and the right side of a front seal plate, wherein an upper hinged support and a lower hinged support are arranged at the rear part of the front seal plate; the wing box comprises an inner side plate, an upper outer side plate and a lower outer side plate, the rear parts of the upper outer side plate and the lower outer side plate are respectively connected with the inner side plate through an upper rear sealing plate and a lower rear sealing plate, the lower rear sealing plate is provided with an opening for avoiding a moving arm cylinder, and the bottom of the lower outer side plate is connected with the inner side plate through a lower connecting bent plate; an intermediate connecting plate for dividing the wing box into an upper box body and a lower box body is arranged between the upper outer side plate and the lower outer side plate, and an upper connecting bent plate is connected between the intermediate connecting plate and the upper rear sealing plate; and the upper parts of the upper outer side plate and the inner side plate are oppositely provided with hinge holes for connecting movable arms.
In the technical scheme of the front frame of the loader, a more specific technical scheme can be that: the two rotating bucket cylinder supports are respectively arranged on the two upper connecting bent plates, and mounting holes for mounting the rotating bucket cylinders are oppositely formed in the rotating bucket cylinder supports and the adjacent inner side plates.
Furthermore, the rotary bucket cylinder support is provided with a supporting lug plate connected with the upper connecting bent plate, and one side of the supporting lug plate is provided with a connecting frame connected with the inner side plate.
Furthermore, a front connecting bent plate for connecting the lower outer side plate and the inner side plate is arranged at the front part of the lower connecting bent plate.
Furthermore, a reinforcing rib plate is arranged on one side of the lower outer side plate close to the lower rear sealing plate.
Further, the intermediate connecting plate is provided with a rib plate part which extends backwards and is connected with the inner side plate.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. according to the wing box, the wing box is divided into the upper box body and the lower box body by the middle connecting plate, the upper box body and the lower box body are both of box-type structures, the strength of the box-type structures is high, the overall strength of the wing box is greatly improved, even if the lifting capacity of a loader is increased, the stress around a hinge hole for connecting with a movable arm on the wing box is very small, the position stress is one fifth of that of a traditional front frame, and the potential safety hazard of cracking caused by the increase of the lifting capacity of the loader is eliminated. The back shrouding falls into back shrouding and lower back shrouding two parts, only back shrouding opening down, and lower back shrouding adopts than the thick material of traditional back shrouding, has improved the bulk strength of preceding frame like this, and the area of lower back shrouding reduces greatly than the area of monoblock back shrouding, and the increase cost is very few because of lower back shrouding thickening.
2. The two rotating bucket cylinder supports are respectively arranged on the two upper connecting bent plates, and mounting holes for mounting the rotating bucket cylinders are oppositely arranged on the rotating bucket cylinder supports and the adjacent inner side plate; the length of the bucket cylinder support which is arranged on the upper connecting bent plate can be shortened, and the strength is improved. The rotary bucket cylinders are connected in the wing box, the distance between the two rotary bucket cylinders is increased, no part is arranged on the front sealing plate, the front field of the whole machine is a space range which can be seen forward from the space between the two rotary bucket cylinders, and the front field of the whole machine is wider due to the increase of the space range.
3. The rotary bucket cylinder support is provided with a supporting lug plate connected with the upper connecting bent plate, and one side of the supporting lug plate is provided with a connecting frame connected with the inner side plate, so that the rotary bucket cylinder support is firmly installed, and the strength is improved.
4. The front part of the lower connecting bent plate is provided with a front connecting bent plate which connects the lower outer side plate and the inner side plate, one side of the lower outer side plate, which is close to the lower rear sealing plate, is provided with a reinforcing rib plate, and the middle connecting plate is provided with a rib plate part which extends backwards and is connected with the inner side plate; the reinforcing rib arranged in the middle of the rear sealing plate of the front frame of the traditional loader is eliminated, and the overall strength of the front frame is further improved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a wing box in an embodiment of the present invention.
Fig. 3 is a view from direction K in fig. 2.
Fig. 4 is a schematic structural diagram of a bucket cylinder support in an embodiment of the invention.
FIG. 5 is a schematic view of the installation of the pedestal and boom of the bucket cylinder of an embodiment of the present invention.
Detailed Description
The invention will be further described in detail with reference to the following examples:
as shown in fig. 1 and 5, the front frame of the loader comprises two wing boxes symmetrically welded to the left and right sides of the front closing plate 2, and the rear portion of the front closing plate 2 is provided with an upper hinge support 5 and a lower hinge support 7 welded between the two wing boxes. The wing box comprises an inner side plate 14, an upper outer side plate 8 and a lower outer side plate 11, wherein the rear part of the upper outer side plate 8 is welded with the inner side plate 14 through an upper rear sealing plate 3, the rear part of the lower outer side plate 11 is welded with the inner side plate 14 through a lower rear sealing plate 9, the lower rear sealing plate 9 is provided with an opening for avoiding a moving arm cylinder, and one side of the lower outer side plate 11, which is close to the lower rear sealing plate 9, is provided with a vertical reinforcing rib plate 10. The bottom of the lower outer side plate 11 is welded with the inner side plate 14 through a lower connecting bent plate 13, the front part of the lower connecting bent plate 13 is welded with a front connecting bent plate 12, and two sides of the front connecting bent plate 12 are respectively welded with the lower outer side plate 11 and the inner side plate 14. An intermediate connecting plate 6 that divides the wing box into an upper box body and a lower box body is welded between the upper outer side plate 8 and the lower outer side plate 11, and the intermediate connecting plate 6 has a web portion that extends rearward and is connected to an inner side plate 14. An upper connecting bent plate 4 is welded between the middle connecting plate 6 and the upper rear sealing plate 3, the bent part of the upper connecting bent plate 4 is positioned above, and two sides of the upper connecting bent plate 4 are respectively welded with an upper outer side plate 8 and an inner side plate 14; hinge holes for connecting the movable arm 15 are oppositely formed in the upper parts of the upper outer side plate 8 and the inner side plate 14, reinforcing lug plates are correspondingly arranged at the hinge holes, and bosses are arranged on the reinforcing lug plates along the edges of the hinge holes, as shown in fig. 2 and 3.
The two upper connecting bent plates 4 are respectively provided with a rotating bucket cylinder support 1, the rotating bucket cylinder support 1 and an adjacent inner side plate 14 are oppositely provided with mounting holes for mounting a rotating bucket cylinder 16, the rotating bucket cylinder support 1 is provided with a supporting lug plate 1-1 for connecting the upper connecting bent plate 4, the mounting holes are positioned on the supporting lug plate 1-1, the supporting lug plate 1-1 is provided with an annular boss 1-4 corresponding to the mounting hole, one side of the supporting lug plate 1-1 is welded with a connecting frame for connecting the inner side plate 14, and the connecting frame is formed by welding a reinforcing bent plate 1-2 and a reinforcing straight plate 1-3, as shown in figure 4.
The lifting capacity of the loader is increased, the stress around the hinge hole for connecting the movable arm 15 on the wing box is very small, the stress at the position is one fifth of that of the traditional front frame, and the potential safety hazard of cracking caused by the increase of the lifting capacity of the loader is eliminated. The back shrouding falls into back shrouding 3 and lower back shrouding 9 two parts, and only lower back shrouding 9 openings, lower back shrouding 9 adopt than the thick material of tradition back shrouding, have improved the bulk strength of preceding frame like this, and the area of lower back shrouding 9 reduces greatly than the area of monoblock back shrouding, and the increase cost is very few because of lower back shrouding 9 thickening. The rotary bucket cylinders 16 are connected in the wing box, the distance between the two rotary bucket cylinders 16 is increased, no part is arranged on the front sealing plate 25, the front view of the whole machine is a space range which can be seen from the space between the two rotary bucket cylinders 16 to the front, and the front view of the whole machine is wider due to the increase of the space range.
Claims (10)
1. A front frame of a loader comprises two rotating bucket cylinder supports (1) and two wing boxes symmetrically connected to the left side and the right side of a front sealing plate (2), wherein an upper hinged support (5) and a lower hinged support (7) are arranged at the rear part of the front sealing plate (2); the method is characterized in that: the wing box comprises an inner side plate (14), an upper outer side plate (8) and a lower outer side plate (11), the rear parts of the upper outer side plate (8) and the lower outer side plate (11) are respectively connected with the inner side plate (14) through an upper rear sealing plate (3) and a lower rear sealing plate (9), the lower rear sealing plate (9) is provided with an opening for avoiding a moving arm cylinder, and the bottom of the lower outer side plate (11) is connected with the inner side plate (14) through a lower connecting bent plate (13); an intermediate connecting plate (6) for dividing the wing box into an upper box body and a lower box body is arranged between the upper outer side plate (8) and the lower outer side plate (11), and an upper connecting bent plate (4) is connected between the intermediate connecting plate (6) and the upper rear sealing plate (3); and the upper parts of the upper outer side plate (8) and the inner side plate (14) are oppositely provided with hinge holes for connecting movable arms (15).
2. The front frame of a loader as set forth in claim 1, wherein: the two rotary bucket cylinder supports (1) are respectively arranged on the two upper connecting bent plates (4), and mounting holes for mounting the rotary bucket cylinders (16) are oppositely formed in the rotary bucket cylinder supports (1) and the adjacent inner side plate (14).
3. The front frame of the loader as set forth in claim 2, wherein: the bucket cylinder support (1) is provided with a supporting lug plate (1-1) connected with the upper connecting bent plate (4), and one side of the supporting lug plate (1-1) is provided with a connecting frame connected with the inner side plate (14).
4. A loader front frame according to claim 1 or 2 or 3, characterized in that: and a front connecting bent plate (12) for connecting the lower outer side plate (11) and the inner side plate (14) is arranged at the front part of the lower connecting bent plate (13).
5. A loader front frame according to claim 1 or 2 or 3, characterized in that: and a reinforcing rib plate (10) is arranged on one side of the lower outer side plate (11) close to the lower rear sealing plate (9).
6. The front frame of the loader as set forth in claim 4, wherein: and a reinforcing rib plate (10) is arranged on one side of the lower outer side plate (11) close to the lower rear sealing plate (9).
7. A loader front frame according to claim 1 or 2 or 3, characterized in that: the middle connecting plate (6) is provided with a rib plate part which extends backwards and is connected with the inner side plate (14).
8. The front frame of the loader as set forth in claim 4, wherein: the middle connecting plate (6) is provided with a rib plate part which extends backwards and is connected with the inner side plate (14).
9. The front frame of the loader as set forth in claim 5, wherein: the middle connecting plate (6) is provided with a rib plate part which extends backwards and is connected with the inner side plate (14).
10. The front frame of the loader as set forth in claim 6, wherein: the middle connecting plate (6) is provided with a rib plate part which extends backwards and is connected with the inner side plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186855.7A CN110984280B (en) | 2019-11-28 | 2019-11-28 | Front frame of loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911186855.7A CN110984280B (en) | 2019-11-28 | 2019-11-28 | Front frame of loader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110984280A CN110984280A (en) | 2020-04-10 |
| CN110984280B true CN110984280B (en) | 2022-04-05 |
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ID=70087624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911186855.7A Active CN110984280B (en) | 2019-11-28 | 2019-11-28 | Front frame of loader |
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| Country | Link |
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| CN (1) | CN110984280B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0302942B1 (en) * | 1987-02-04 | 1992-06-17 | Kabushiki Kaisha Komatsu Seisakusho | Front frame of wheeled loader |
| CN103290867B (en) * | 2013-05-03 | 2015-12-23 | 厦门衡山机械有限公司 | Large-tonnage presss from both sides wooden car |
| CN203920912U (en) * | 2014-04-29 | 2014-11-05 | 龙工(上海)机械制造有限公司 | A kind of loader heavier-duty front vehicle frame |
| CN204368275U (en) * | 2014-12-31 | 2015-06-03 | 福田雷沃国际重工股份有限公司 | A kind of front frame for loader |
| CN208533605U (en) * | 2018-06-13 | 2019-02-22 | 龙工(上海)机械制造有限公司 | A kind of reinforced front frame of loading machine |
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2019
- 2019-11-28 CN CN201911186855.7A patent/CN110984280B/en active Active
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| Publication number | Publication date |
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| CN110984280A (en) | 2020-04-10 |
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