CN203129223U - Flat pin hole of hydraulic hammer - Google Patents
Flat pin hole of hydraulic hammer Download PDFInfo
- Publication number
- CN203129223U CN203129223U CN 201320087766 CN201320087766U CN203129223U CN 203129223 U CN203129223 U CN 203129223U CN 201320087766 CN201320087766 CN 201320087766 CN 201320087766 U CN201320087766 U CN 201320087766U CN 203129223 U CN203129223 U CN 203129223U
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- China
- Prior art keywords
- cotter
- flat pin
- pin hole
- hole
- cotter hole
- 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.)
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Abstract
The utility model provides a flat pin hole of a hydraulic hammer and belongs to the technical field of machinery. The flat pin hole of the hydraulic hammer solves the problem in the prior art that a flat pin and a flat pin hole are easy to damage due to the fact that impact force between the flat pin and the flat pin hole is too large. The middle portion of the flat pin hole is rectangular, the end portion of the flat pin hole is semi-circular, a connecting position of the middle portion of the flat pin hole and the end portion of the flat pin hole is in curve transition, the diameter of the semi-circle is D, the width of the rectangle is L, and D is larger than L. The flat pin hole has the advantage of prolonging the service life of the flat pin hole and the flat pin.
Description
Technical field
The utility model has related to a kind of quartering hammer, has been specifically related to a kind of cotter hole of hydraulic breaking hammer.
Background technology
Hydraulic breaking hammer has become an important power tool of hydraulic crawler excavator, also has simultaneously widely to use on loader-digger or wheel loader.Hydraulic breaking hammer is to be power with the hydrostatic pressure, and driven plunger moves back and forth, and high-speed impact drill steel during piston stroke is by solids such as drill steel breaking ores, concrete.
Hydraulic breaking hammer comprises cylinder body, is positioned at piston and the drill steel of cylinder body.And cylinder body comprises down cylinder, middle cylinder and be used for holding the upper cylinder half of gas, and following cylinder, middle cylinder and upper cylinder half link together by some bolts, the inside of cylinder during piston is installed in, drill steel be positioned at cylinder interior down and be positioned at piston under.Have cotter hole in above-mentioned cylinder body, the radial section of this cotter hole is made of the identical semicircle of two radiuses and the rectangle that two semicircles are linked together, and the radius of semicircle is wide identical with rectangle.And be inserted with cotter pilotage in the cotter hole, and cotter pilotage is used for the location drill steel, and the shape and size of cotter hole and cotter pilotage are complementary.Therefore, in the time of hydraulic breaking hammer work, cotter pilotage can continue when being subjected to the hitting power of drill steel with cotter hole generation percussion.In the percussion process, the both sides of cotter pilotage, i.e. the position of shape semicircular in shape, with the contact area minimum of the both sides of cotter hole, the therefore percussion power maximum that produces, this can make cotter pilotage and cotter hole all be damaged, and has reduced the working life of cotter pilotage and cotter hole.
Summary of the invention
There are the problems referred to above in the utility model at existing technology, has proposed a kind of cotter hole of hydraulic breaking hammer, and this cotter hole can reduce the percussion power between cotter pilotage and the cotter hole, especially reduces the percussion power between the both sides of the both sides of cotter pilotage and cotter hole.
The utility model is realized by following technical proposal: a kind of cotter hole of hydraulic breaking hammer, hydraulic breaking hammer comprises cylinder body, described cotter hole is arranged in the cylinder body, it is characterized in that, the cross sectional shape at the middle part of described cotter hole is rectangular, the cross sectional shape semicircular in shape of the both sides of described cotter hole, the curved transition in the junction of the middle part of described cotter hole and the both sides of described cotter hole, described semicircular diameter is D, the width of described rectangle is L, and described D is greater than described L.
In the time of hydraulic breaking hammer work, influenced by the strike of drill steel, percussion can take place in cotter pilotage and cotter hole, specifically the sidewall generation percussion of the sidewall of cotter pilotage and cotter hole.And in the process of this percussion, the both sides of cotter pilotage and the both sides of cotter hole collision dynamics are bigger, especially the end points place of the both sides of cotter pilotage and cotter hole collision dynamics maximum.Its reason is, the active force that identical inertia produces, and when its lifting surface area was more little, the percussion power of this collision place was then more big.As D during greater than L, can effectively increase the lifting surface area of the both sides of cotter pilotage and cotter hole, and then reduce this place's percussion dynamics, thereby play the purpose of protection cotter pilotage and cotter hole; Simultaneously again because D greater than L, so do not influence fitness between cotter pilotage and the cotter hole after arranging like this, the problem that cotter pilotage skids off can not occur from cotter hole when normal the use.And the curved transition in the junction of the both sides of the middle part of cotter hole and cotter hole can reduce the percussion power of the junction of cotter pilotage and cotter hole.
In the cotter hole of above-mentioned a kind of hydraulic breaking hammer, described D is than the big 0.1～0.2mm of described L.In this number range, not only can reach the purpose that reduces percussion power preferably, and the fitness between cotter pilotage and the cotter hole is also better.
Compared with prior art; the diameter D of the both sides of the cotter hole of this hydraulic breaking hammer is greater than the width L at the middle part of cotter hole; effectively increased the lifting surface area of the both sides of the both sides of cotter pilotage and cotter hole; and then reduce this place's percussion dynamics; play the purpose of protection cotter pilotage and cotter hole, improved the working life of cotter pilotage and cotter hole.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure, 1, cylinder body; 2, cotter hole; 3, middle part; 4, both sides; 5, junction.
The specific embodiment
Below be specific embodiment of the utility model, and by reference to the accompanying drawings the technical solution of the utility model be further described, but the utility model is not limited to these embodiment.
The cotter hole of a kind of hydraulic breaking hammer as shown in Figure 1, hydraulic breaking hammer comprises cylinder body 1, described cotter hole 2 is arranged in the cylinder body 1, the cross sectional shape at the middle part 3 of described cotter hole 2 is rectangular, the cross sectional shape semicircular in shape of the both sides 4 of described cotter hole 2, the middle part 3 of described cotter hole 2 and the junction 5 curved transition of the both sides 4 of described cotter hole 2, described semicircular diameter is D, the width of described rectangle is L, and described D is greater than described L.In the time of hydraulic breaking hammer work, influenced by the strike of drill steel, percussion, the sidewall generation percussion of the sidewall of cotter pilotage and cotter hole 2 specifically can take place in cotter pilotage and cotter hole 2.And in the process of this percussion, the two ends of the two ends of cotter pilotage and cotter hole 2 collision dynamics is bigger, especially the end points place of the both sides 4 of cotter pilotage and cotter hole 2 collision dynamics maximum.Its reason is, the active force that identical inertia produces, and when its lifting surface area was more little, the percussion power of this collision place was then more big; As D during greater than L, can effectively increase the lifting surface area of the both sides 4 of the both sides of cotter pilotage and cotter hole 2, and then reduce this place's percussion dynamics, thereby play the purpose of protection cotter pilotage and cotter hole 2; Simultaneously again because D greater than L, so do not influence fitness between cotter pilotage and the cotter hole 2 after arranging like this, the problem that cotter pilotage skids off can not occur from cotter hole 2 when normal the use.And the junction 5 curved transition of the middle part 3 of cotter hole 2 and the both sides 4 of cotter hole 2 can reduce the percussion power of the junction 5 of cotter pilotage and cotter hole 2, play the purpose of protecting this junction 5.
And as D during than the big 0.1～0.2mm of L, in this number range, not only can reach the purpose that reduces percussion power preferably, and the fitness between cotter pilotage and the cotter hole 2 is also better.In the present embodiment, D is than the big 0.1mm of L.By the improvement to cotter hole 2, not only reach the purpose of protection cotter pilotage and cotter hole 2, and improved the working life of cotter pilotage and cotter hole 2.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as cylinder body 1, cotter hole 2, middle part 3, both sides 4, junction 5 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (2)
1. the cotter hole of a hydraulic breaking hammer, hydraulic breaking hammer comprises cylinder body (1), described cotter hole (2) is arranged in the cylinder body (1), it is characterized in that, the middle part (3) of described cotter hole (2) is rectangular, both sides (4) semicircular in shape of described cotter hole (2), the curved transition in junction (5) of the middle part (3) of described cotter hole (2) and the both sides (4) of described cotter hole (2), described semicircular diameter is D, the width of described rectangle is L, and described D is greater than described L.
2. the cotter hole of a kind of hydraulic breaking hammer as claimed in claim 1 is characterized in that, described D is than the big 0.1～0.2mm of described L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087766 CN203129223U (en) | 2013-02-26 | 2013-02-26 | Flat pin hole of hydraulic hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087766 CN203129223U (en) | 2013-02-26 | 2013-02-26 | Flat pin hole of hydraulic hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203129223U true CN203129223U (en) | 2013-08-14 |
Family
ID=48937217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320087766 Expired - Fee Related CN203129223U (en) | 2013-02-26 | 2013-02-26 | Flat pin hole of hydraulic hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203129223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098466A (en) * | 2016-07-11 | 2016-11-09 | 中国电力科学研究院 | Bearing pin and there is the touch spring device of this bearing pin |
-
2013
- 2013-02-26 CN CN 201320087766 patent/CN203129223U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098466A (en) * | 2016-07-11 | 2016-11-09 | 中国电力科学研究院 | Bearing pin and there is the touch spring device of this bearing pin |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20160226 |