CN204276750U - The bar cropper that oil transportation is stable - Google Patents
The bar cropper that oil transportation is stable Download PDFInfo
- Publication number
- CN204276750U CN204276750U CN201420709593.4U CN201420709593U CN204276750U CN 204276750 U CN204276750 U CN 204276750U CN 201420709593 U CN201420709593 U CN 201420709593U CN 204276750 U CN204276750 U CN 204276750U
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- piston
- oil
- pump
- pump housing
- suction chamber
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Abstract
The utility model discloses the bar cropper that oil transportation is stable, it is characterized in that: hydraulic part comprises the pump housing, assembly of the plunger pump, pump shaft, first piston and the second piston, the plunger hole of radial direction is provided with to install assembly of the plunger pump in the pump housing, the pump oil action of assembly of the plunger pump is promoted by the roller be installed on the eccentric spindle nose in pump shaft front end, pump shaft carries out pivoting support by the pump housing, pump housing front end sets out oil pocket, first piston is going out in oil pocket movable setting, first piston is connected with movable blade by knife bar, the front end of first piston is provided with the first spring, oil suction chamber is established in pump housing rear end, second piston is movable in oil suction chamber to be arranged, the rear end of the second piston is provided with the second spring, go out oil pocket be positioned at first piston before cavity A and oil suction chamber be positioned at the second piston before cavity B connected by the built-in oil circuit of the pump housing.Oil suction chamber of the present utility model have employed spring piston structure to carry out oil transportation, has the advantages that oil transportation is stable, effectively improves work effect and the service life of cutting machine.<b/>
Description
Technical field
The utility model relates to a kind of Handheld reinforcing steel bar cutting machine for reinforcing bar fast shut-off.
Background technology
The little type steel bar cut-off machine of a kind of hand-held occurred in the market, this kind of bar cropper have use flexibly, the advantage of fast shut-off, if any people on July 27th, 2007 apply for, the patent No. 200720112377.1, name be called the utility model patent of " a kind of bar cropper ".But the disadvantage that the bar cropper that the bar cropper of prior art comprises above-mentioned patented technology exists is: the oil suction chamber of hydraulic part is come by the elastic shrinkage of rubbery human body when oil transportation, rubbery human body is located in clamp block, and rubbery human body is by after oil temperature rising, caoutchouc elasticity can be deteriorated, so oil transportation slows, fuel delivery reduces, so direct oil-feed affecting oil suction chamber, cause bar cropper operationally effect reduction, moreover, rubbery human body after some period of time elasticity reduces also easily aging, so service life is also short.
Summary of the invention
For overcoming the deficiency that background technology exists, the utility model is taked following technical scheme to implement:
The bar cropper that oil transportation is stable, by the cut-off parts axially arranged, hydraulic part and power section composition, cut-off parts comprises clamp block, dead knife and movable blade, dead knife is fixedly located in clamp block, movable blade is actively installed in clamp block, after movable blade and dead knife relative motion, reinforcing bar is cut off, it is characterized in that: hydraulic part comprises the pump housing, assembly of the plunger pump, pump shaft, first piston and the second piston, the plunger hole of some radial direction is provided with to install assembly of the plunger pump in the pump housing, the pump oil action of assembly of the plunger pump is promoted by the roller be installed on the eccentric spindle nose in pump shaft front end, pump shaft carries out pivoting support by the pump housing, the rotation of pump shaft is driven by the motor of power section, pump housing front end sets out oil pocket, first piston is going out in oil pocket movable setting, first piston is connected with movable blade by knife bar, the front end of first piston is provided with the first spring, oil suction chamber is established in pump housing rear end, second piston is movable in oil suction chamber to be arranged, the rear end of the second piston is provided with the second spring, go out oil pocket be positioned at first piston before cavity A and oil suction chamber be positioned at the second piston before cavity B connected by the built-in oil circuit of the pump housing.
After adopting technique scheme, the oil suction chamber oil transportation of bar cropper of the present utility model has been come by the second piston and the second spring, rubbery human body structure compared to existing technology, obviously there is the advantage that oil transportation is stable, even if work time oil temperature raise after oil transportation speed also can constant speed constant, thus effectively improve work effect of bar cropper, simultaneously owing to not having the aging of rubbery human body and elasticity to reduce phenomenon, improve service life.
For ensureing to arrange the sealing after the second piston in oil suction chamber, the technical scheme adopted is: described oil suction chamber internal fixtion is provided with spacer, spacer empty set is at pump shaft cylindrical, described second piston slides and is located at spacer cylindrical, be provided with the first lip circle between the cylindrical of the second piston and the bore wall of oil suction chamber to seal, be provided with the second lip circle between the endoporus of the second piston and the cylindrical of spacer to seal, the rear end of spacer is provided with the 3rd lip circle sealing between the pump housing and pump shaft.
As preferably, the described pump housing is formed by fixedly connecting by the first half pump housing and the later half pump housing, and go out oil pocket and cross between the first half pump housing and clamp block, oil suction chamber crosses between the first half pump housing and the later half pump housing.
Accompanying drawing explanation
The utility model has following accompanying drawing:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in the figure, the bar cropper that oil transportation of the present utility model is stable, by the cut-off parts axially arranged, hydraulic part and power section composition, cut-off parts comprises clamp block 21, dead knife 22 and movable blade 23, dead knife 22 is fixedly located in clamp block 21, movable blade 23 is actively installed in clamp block 21, after movable blade 23 and dead knife 22 relative motion, reinforcing bar is cut off, hydraulic part comprises the pump housing, assembly of the plunger pump 18, pump shaft 11, first piston 3 and the second piston 15, the described pump housing is formed by fixedly connecting by the first half pump housing 5 and the later half pump housing 8, the plunger hole 6 of some radial direction is provided with to install assembly of the plunger pump 18 in the pump housing, the pump oil action of assembly of the plunger pump 18 is promoted by the roller 19 be installed on the eccentric spindle nose 20 in pump shaft 11 front end, pump shaft 11 carries out pivoting support by the pump housing, the rotation of pump shaft 11 is driven by the motor 10 of power section, pump housing front end sets out oil pocket 4, first piston 3 is going out in oil pocket 4 movable setting, first piston 3 is connected with movable blade 23 by knife bar 1, the front end of first piston 3 is provided with the first spring 2, oil suction chamber 14 is established in pump housing rear end, second piston 15 is movable in oil suction chamber 14 to be arranged, the rear end of the second piston 15 is provided with the second spring 13, go out oil pocket 4 be positioned at first piston before cavity A and oil suction chamber 14 be positioned at the second piston before cavity B connected by the built-in oil circuit of the pump housing.
Described oil suction chamber 14 internal fixtion is provided with spacer 7, spacer 7 empty set is at pump shaft 11 cylindrical, described second piston 15 slides and is located at spacer 7 cylindrical, be provided with the first lip circle between the cylindrical of the second piston 15 and the bore wall of oil suction chamber 14 and seal 16, be provided with the second lip circle between the endoporus of the second piston 15 and the cylindrical of spacer 7 and seal 17, the rear end of spacer 7 is provided with the 3rd lip circle and seals 12 between the pump housing and pump shaft 11.
Go out oil pocket 4 to cross between the first half pump housing 5 and clamp block 21, oil suction chamber 14 crosses between the first half pump housing 5 and the later half pump housing 8, and clamp block 21 is fixedly connected on the front end of the first half pump housing 5.
Bar cutting process of the present utility model is: machine operation drives pump shaft to rotate, pair of rollers assembly of the plunger pump on the eccentric spindle nose in pump shaft front end promotes, assembly of the plunger pump is from oil suction chamber oil suction and pressure oil pump to going out oil pocket, pressure oil pushes away before promoting first piston, and then drive knife bar and movable blade to move to dead knife direction to cut off reinforcing bar, cavity B can be directly arrived by the built-in oil circuit of the pump housing after fluid in this process in cavity A is compressed, so the oil transportation action of oil suction chamber has been come by the second piston and the second spring, there is the advantage that oil transportation is stable, even if work time oil temperature raise after oil transportation speed also can constant speed constant, thus effectively improve work effect of bar cropper, simultaneously owing to not having the aging of rubbery human body and elasticity to reduce phenomenon, improve service life.
Claims (3)
1. the bar cropper that oil transportation is stable, by the cut-off parts axially arranged, hydraulic part and power section composition, cut-off parts comprises clamp block, dead knife and movable blade, dead knife is fixedly located in clamp block, movable blade is actively installed in clamp block, after movable blade and dead knife relative motion, reinforcing bar is cut off, it is characterized in that: hydraulic part comprises the pump housing, assembly of the plunger pump, pump shaft, first piston and the second piston, the plunger hole of some radial direction is provided with to install assembly of the plunger pump in the pump housing, the pump oil action of assembly of the plunger pump is promoted by the roller be installed on the eccentric spindle nose in pump shaft front end, pump shaft carries out pivoting support by the pump housing, the rotation of pump shaft is driven by the motor of power section, pump housing front end sets out oil pocket, first piston is going out in oil pocket movable setting, first piston is connected with movable blade by knife bar, the front end of first piston is provided with the first spring, oil suction chamber is established in pump housing rear end, second piston is movable in oil suction chamber to be arranged, the rear end of the second piston is provided with the second spring, go out oil pocket be positioned at first piston before cavity A and oil suction chamber be positioned at the second piston before cavity B connected by the built-in oil circuit of the pump housing.
2. the bar cropper that oil transportation according to claim 1 is stable, it is characterized in that: described oil suction chamber internal fixtion is provided with spacer, spacer empty set is at pump shaft cylindrical, described second piston slides and is located at spacer cylindrical, be provided with the first lip circle between the cylindrical of the second piston and the bore wall of oil suction chamber to seal, be provided with the second lip circle between the endoporus of the second piston and the cylindrical of spacer to seal, the rear end of spacer is provided with the 3rd lip circle sealing between the pump housing and pump shaft.
3. the bar cropper that oil transportation according to claim 1 is stable, it is characterized in that: the described pump housing is formed by fixedly connecting by the first half pump housing and the later half pump housing, go out oil pocket to cross between the first half pump housing and clamp block, oil suction chamber crosses between the first half pump housing and the later half pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420709593.4U CN204276750U (en) | 2014-11-24 | 2014-11-24 | The bar cropper that oil transportation is stable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420709593.4U CN204276750U (en) | 2014-11-24 | 2014-11-24 | The bar cropper that oil transportation is stable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204276750U true CN204276750U (en) | 2015-04-22 |
Family
ID=52859948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420709593.4U Expired - Fee Related CN204276750U (en) | 2014-11-24 | 2014-11-24 | The bar cropper that oil transportation is stable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204276750U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424310A (en) * | 2016-11-15 | 2017-02-22 | 杭州欧盾机电有限公司 | Punching machine |
| CN107497970A (en) * | 2017-08-10 | 2017-12-22 | 浙江工业大学 | A kind of light-duty steel bar quick breaker |
-
2014
- 2014-11-24 CN CN201420709593.4U patent/CN204276750U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106424310A (en) * | 2016-11-15 | 2017-02-22 | 杭州欧盾机电有限公司 | Punching machine |
| CN107497970A (en) * | 2017-08-10 | 2017-12-22 | 浙江工业大学 | A kind of light-duty steel bar quick breaker |
| CN107497970B (en) * | 2017-08-10 | 2024-03-26 | 浙江工业大学 | Light steel bar quick breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20161124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |