CN205822296U - A kind of excavator swing arm body structure - Google Patents
A kind of excavator swing arm body structure Download PDFInfo
- Publication number
- CN205822296U CN205822296U CN201620710163.3U CN201620710163U CN205822296U CN 205822296 U CN205822296 U CN 205822296U CN 201620710163 U CN201620710163 U CN 201620710163U CN 205822296 U CN205822296 U CN 205822296U
- Authority
- CN
- China
- Prior art keywords
- slotted hole
- plate
- swing arm
- body structure
- arm body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model discloses a kind of excavator swing arm body structure, including upper sealing plate, the casing that lower shrouding and biside plate surround, also include two composition backings and two long plectanes, it is affixed that T junction between described upper sealing plate and biside plate and lower shrouding and biside plate is inside and outside two-sided welding, on described biside plate, symmetry offers slotted hole, described composition backing is shaped as identical with slotted hole shape ring-type, the outer ledge of composition backing is overlapped on side plate interior sides Mian Shang slotted hole edge, described long circular plate shape is identical with slotted hole shape, long plectane is affixed with slotted hole edge and composition backing on side plate in being assembled in slotted hole.Swing arm body structure of the present utility model achieves the two-sided welding of all T junctions of casing, substantially increases the intensity of casing, extends the service life of swing arm.
Description
Technical field
This utility model relates to a kind of excavator swing arm body structure, belongs to excavator field of mechanical technique.
Background technology
Swing arm is as one of topmost structural member of excavator, when excavator works by various impulsive forces, moment of flexure, torsion
The effect of square, the highest to requirement of strength.Current swing arm body structure, by upper sealing plate, lower shrouding, left plate, right plate
Four part compositions, when spelling means of spot welds, after finally spelling plate assembly a little, form enclosed casing, the twice weldering of inner side
Seam cannot weld, and can only weld by the mode of single face welding and double face shaping, ensure weld strength as far as possible.But single fillet welded T-shaped
Strength of joint is relatively low, and the stress of T-shaped commissure is concentrated very much, is the position being easiest in whole casing break down, at swing arm
Institute faulty in, the T-shaped weld cracking proportion of casing is the highest, and the most single fillet welded T-shaped weld seam can not fully meet dynamic
The intensity of arm, in excavator particularly large excavator uses, it is easy to because weld cracking occurs that swing arm lost efficacy.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, it is provided that a kind of excavator swing arm casing knot
Structure, solves in prior art the relatively low technology causing weld seam easily to ftracture of single fillet welded T junction intensity in body structure
Problem.
For solving above-mentioned technical problem, this utility model provides a kind of excavator swing arm body structure, including upper sealing plate,
The casing that lower shrouding and biside plate surround, is characterized in that, also includes two composition backings and two long plectanes, described upper sealing plate with
It is affixed that T junction between biside plate and lower shrouding and biside plate is inside and outside two-sided welding, and on described biside plate, symmetry is offered
Having slotted hole, described composition backing to be shaped as identical with slotted hole shape ring-type, the outer ledge of composition backing is overlapped on side
Slotted hole edge on plate medial surface, described long circular plate shape is identical with slotted hole shape, long plectane be assembled in slotted hole with
On side plate, slotted hole edge and composition backing are affixed.
Further, described composition backing and the connection of side plate are that spot welding is affixed.
Further, on described side plate, slotted hole edge is the inclined-plane that medial surface gradually tapers up to lateral surface.
Further, the edge of described long plectane is the inclined-plane that medial surface gradually tapers up to lateral surface.
Further, between edge and the side plate interior sides face length bore edges of described long plectane, gap is 2 ~ 4mm.
Compared with prior art, this utility model is reached to provide the benefit that: swing arm body structure of the present utility model
Achieve the two-sided welding of all T junctions of casing, substantially increase the intensity of casing, extend the service life of swing arm.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model swing arm casing.
Fig. 2 is the profile in Fig. 1 at A-A.
Fig. 3 is the enlarged drawing in Fig. 2 at B.
Fig. 4 is the structural representation of composition backing in this utility model.
In figure: 1, left plate；2, upper sealing plate；3, lower shrouding；4, right plate；5, weld seam one；6, weld seam two；7, long plectane；
8, composition backing.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.Following example are only used for this is clearly described
The technical scheme of utility model, and protection domain of the present utility model can not be limited with this.
In known swing arm casing, the stress of T-shaped commissure is concentrated very much, is the position being easiest in whole casing break down
Putting, in the institute of swing arm is faulty, the T-shaped weld cracking proportion of casing is the highest, will be changed into by single-sided welding by weld seam herein
Two-sided welding can be greatly enhanced the intensity of weld seam, also can be greatly improved the service life of swing arm.In order to realize the two-sided of T-shaped weld seam
Welding, this utility model takes the mode of side opening slotted hole repair welding again, and reason has 2 points: one be the stress on body side relatively
Little, to the requirement of intensity well below T-shaped weld seam；Two is that the welding at slotted hole is the least to the intensity effect of side plate.
As shown in Figures 1 to 4, this utility model provide a kind of excavator swing arm body structure, including left plate 1, on
Shrouding 2, lower shrouding 3 and right plate 4, described left plate 1, upper sealing plate 2, right plate 4 and lower shrouding 3 be sequentially connected and surround casing,
It is characterized in that, also include two composition backings 8 and two long plectanes 7, described left plate 1 and upper sealing plate 2, upper sealing plate 2 and right side
Forming 4 T junctions between plate 4, right plate 4 and lower shrouding 3 and lower shrouding 3 and left plate 1, described T junction is inside and outside
Two-sided welding is affixed, and on described left plate 1 and right plate 4, symmetry offers slotted hole, and described composition backing 8 is shaped as with oval
Identical ring-type of hole shape, the outer ledge of composition backing 8 is overlapped on slotted hole edge on side plate (1,4) medial surface, described
Long circular plate shape is identical with slotted hole shape, and long plectane 7 is assembled in the interior slotted hole edge upper with side plate (1,4) of slotted hole and welds
Backing plate 8 is affixed.
The assembled process of this utility model excavator swing arm casing is, first left plate 1 and right plate 4 are in same position
The slotted hole of processing same size, comes in and goes out box house for welder, and slotted hole quantity determines according to actual needs, by multiple
Composition backing 8 is welded in left plate 1, the medial surface of right plate 4 respectively, forms weld seam 1；Then left plate 1, upper sealing plate 2
Being bolted together with lower shrouding 3, form two T junctions, two T junctions all use two-sided welding as shown in Figure 3；Assembled again
Right plate 4, first completes between right plate 4 and upper sealing plate 2 and the outside welding of right plate 4 and lower shrouding 3；Then welder is led to
Cross slotted hole and enter box house, complete between right plate 4 and upper sealing plate 2 and the inside welding of right plate 4 and lower shrouding 3, make
The T junction of right plate 4 and upper sealing plate 2 and right plate 4 and lower shrouding 3 is also two-sided welding；After having welded, welder is led to
Cross slotted hole and get out casing；Finally the assembly respectively of long plectane 7, to left plate 1 and right plate 4 slotted hole position, is passed on left weldering
Stitch 26 to weld together with right plate 4 and composition backing 8 respectively with left plate 1 and composition backing 8, right side respectively, it is achieved casing
Sealing.This assembled process is existing assembled left plate 1, upper sealing plate 2 and lower shrouding 3, at assembled right plate 4, it is also possible to according to it
His order is assembled, such as the most assembled upper sealing plate 2, lower shrouding 3 and right plate 4, at assembled left plate 1.
Swing arm body structure of the present utility model achieves the two-sided welding of all T junctions of casing, substantially increases case
The intensity of body, extends the service life of swing arm.
Further, the connection between described composition backing 8 and left plate 1 and right plate 4 is that spot welding is affixed, long plectane 7
When fitting with left plate 1 and right plate 4, box house will thoroughly be closed, it is impossible to composition backing 8 is put into box house, so
Needing composition backing 8 is first fixed on left plate 1 and the inner side of right plate 4, this fixing desirable strength is relatively low, spot welding.
Further, the upper slotted hole edge of described side plate (1,4) is the inclined-plane that medial surface gradually tapers up to lateral surface.Enter
One step, the edge of described long plectane 7 is the inclined-plane that medial surface gradually tapers up to lateral surface.Make long plectane relative with side plate
Form trapezoidal gaps between edge and composition backing, not only improve enforcement welding, also improve the intensity of weld seam.
Further, between edge and side plate (1,4) the medial surface slotted hole edge of described long plectane 7, gap is 2 ~ 4mm,
Using as welded gaps, improving welding effect, when welded gaps is 3mm, best results, the intensity of welding is high.
The above is only preferred implementation of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of without departing from this utility model know-why, it is also possible to make some improvement and deformation, these change
Enter and deform and also should be regarded as protection domain of the present utility model.
Claims (5)
1. an excavator swing arm body structure, the casing surrounded including upper sealing plate, lower shrouding and biside plate, it is characterized in that, also
Including the T junction between two composition backings and two long plectanes, described upper sealing plate and biside plate and lower shrouding and biside plate
Being inside and outside two-sided welding affixed, on described biside plate, symmetry offers slotted hole, and described composition backing is shaped as and slotted hole
Identical ring-type of shape, the outer ledge of composition backing is overlapped on side plate interior sides Mian Shang slotted hole edge, described long circular plate type
Shape is identical with slotted hole shape, and long plectane is affixed with slotted hole edge and composition backing on side plate in being assembled in slotted hole.
A kind of excavator swing arm body structure the most according to claim 1, is characterized in that, described composition backing and side plate
It is connected as spot welding affixed.
A kind of excavator swing arm body structure the most according to claim 1, is characterized in that, slotted hole edge on described side plate
The inclined-plane that place gradually tapers up for medial surface to lateral surface.
A kind of excavator swing arm body structure the most according to claim 3, is characterized in that, the edge of described long plectane is
The inclined-plane that medial surface gradually tapers up to lateral surface.
A kind of excavator swing arm body structure the most according to claim 4, is characterized in that, the edge of described long plectane and side
Between plate medial surface slotted hole edge, gap is 2 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620710163.3U CN205822296U (en) | 2016-07-06 | 2016-07-06 | A kind of excavator swing arm body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620710163.3U CN205822296U (en) | 2016-07-06 | 2016-07-06 | A kind of excavator swing arm body structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205822296U true CN205822296U (en) | 2016-12-21 |
Family
ID=57565715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620710163.3U Active CN205822296U (en) | 2016-07-06 | 2016-07-06 | A kind of excavator swing arm body structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205822296U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906857A (en) * | 2017-04-14 | 2017-06-30 | 徐州徐工传动科技有限公司 | One kind bridge formula balance box structure |
| CN113423953A (en) * | 2019-02-13 | 2021-09-21 | 丹佛斯商用压缩机公司 | Scroll compressor including a base plate having a mounting base and a cylindrical rim secured by a double-sided welded tee joint |
-
2016
- 2016-07-06 CN CN201620710163.3U patent/CN205822296U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906857A (en) * | 2017-04-14 | 2017-06-30 | 徐州徐工传动科技有限公司 | One kind bridge formula balance box structure |
| CN113423953A (en) * | 2019-02-13 | 2021-09-21 | 丹佛斯商用压缩机公司 | Scroll compressor including a base plate having a mounting base and a cylindrical rim secured by a double-sided welded tee joint |
| US12031538B2 (en) | 2019-02-13 | 2024-07-09 | Danfoss Commercial Compressors | Scroll compressor including a baseplate having a mounting base and a cylindrical rim secured by a double-welded T-joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205822296U (en) | A kind of excavator swing arm body structure | |
| CN102505628A (en) | Closed U-shaped stiffening rib for preventing fatigue cracks of steal bridge and construction method of closed U-shaped stiffening rib | |
| CN103909329A (en) | Full penetration weld method of HV type groove single face welding seam | |
| CN204186748U (en) | A kind of flange welding nut with sealing auto-lock function | |
| CN204186673U (en) | A kind of oil cylinder with active connection | |
| CN109664040A (en) | Secondary bottom plate method pedestal intensifying method | |
| CN204792951U (en) | Power type arc -welding block | |
| CN203924157U (en) | A kind of loader box type rocking arm | |
| CN205769648U (en) | A kind of modified model railway freight-car trunk side door plate | |
| CN204187174U (en) | Welding neckflange | |
| CN205214524U (en) | Upset frame section bar | |
| CN204802848U (en) | Hoist of side about processing cylinder block | |
| CN107498207A (en) | Steel construction technique crosses the method for blocking of welding hole | |
| CN203401225U (en) | Novel lug plate structure | |
| CN205437596U (en) | Tower crane jib loading boom pull rod welding frock | |
| CN203474216U (en) | Marine high-strength hanger | |
| CN207026824U (en) | A kind of weldment and its welding structure | |
| CN203202465U (en) | Exhaust pipe flange | |
| CN204459624U (en) | A kind of sealing cover | |
| CN203578007U (en) | Integrated ash bucket beam component structure of dust collector | |
| CN209109327U (en) | The mechanical tooth of pulverizer and waste disposal | |
| CN202935112U (en) | Axle housing assembly matched with rubber suspension frame for use | |
| CN205742154U (en) | A kind of hollow square pile straight pin location inside collar is mechanically connected uplift pile joint | |
| CN206693805U (en) | A kind of hinge holder structure for building | |
| CN204341223U (en) | Bulge assembly in trailing wheel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |