CN207830544U - Hydraulic drill piston - Google Patents
Hydraulic drill piston Download PDFInfo
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- CN207830544U CN207830544U CN201721794643.3U CN201721794643U CN207830544U CN 207830544 U CN207830544 U CN 207830544U CN 201721794643 U CN201721794643 U CN 201721794643U CN 207830544 U CN207830544 U CN 207830544U
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Abstract
The utility model discloses a kind of hydraulic drill pistons, including piston matrix, the axial direction of piston matrix upper edge piston matrix offers leading portion matrix annular groove, stage casing matrix annular groove and back segment matrix annular groove successively, and sintering has that self-lubricating property is good, impact-resistant modified PE EK composite materials respectively in the slot of leading portion matrix annular groove, stage casing matrix annular groove and back segment matrix annular groove.The utility model has self-lubricating property good, and friction coefficient is low, high intensity, and impact resistance and anti abrasive characteristic have good comprehensive mechanical performance, be greatly improved the service life of hydraulic drill piston.
Description
Technical field
The utility model is related to a kind of hydraulic gates, belong to hydraulic drill parts technical field, and in particular to one
Kind hydraulic drill piston.
Background technology
Hydraulic gate is to develop one of more rapid rock drilling equipment, the especially hair of water hydraulic system rock drill in recent years
Exhibition, the revolutionary utility model of mining machine since being known as the 1880's are mainly used for the cutting of mining blasthole.Its work
Principle is that power unit provides the pressure of 110 bar to rock drill, pushes high speed piston movement, taps drill steel, maximum impact
Rate is 1950 times per minute, completes the continuous crushing of rock.
The closed circuit hydraulic pressure system that hydraulic rock drill uses, because of required a small amount of water（36 liters）It is followed in closed-circuit pipe
Ring is not necessarily to additional water other than the drilling cuttings for needing to generate in a small amount of water wash boring.Therefore, air pressure rock drilling has been saved
Machine（Air drill）, a large amount of water necessary to hydraulic gate and open type hydraulic drill supplies water and draining to save
Facility and expense.The equipment when in use, without water and oil discharge, also without a large amount of powder caused by other rock drills
Dirt, noise is also well below other rock drills, between 98-102 decibels.Overview says water hydraulic system rock drill energy-saving ring
It protects, there are good market prospects.But all light waters of water hydraulic system rock drill system, no film lubrication, this is to steel
Sliding friction subsystem based on part is fatal, especially core impulse member piston, because movement mating surface is rigid contact, easily
It leads to the problem of and grinds wound fracture.
To solve the above-mentioned problems, it may be considered that being sintered one layer in the movement matching part of steel part piston has self lubricity
Can be good, friction coefficient is low, high intensity, impact resistance and anti abrasive plastimets.Currently, having above-mentioned partial properties
Plastic composite be previously mentioned in patent CN105711194A and patent CN102875966B, mostly with plastic part
Based on, it is mainly used for aircraft wing.But the plastic composite that two patents provide is not directed to self-lubricating property and friction system
The low performance characteristics of number, will be used for the piston of water hydraulic system rock drill, also need further to improve.
Utility model content
The technical problems to be solved in the utility model is to overcome the above-mentioned deficiency of the prior art, provides a kind of surface self-lubricating
Performance is good, and friction coefficient is low, high intensity, impact resistance and anti abrasive hydraulic drill piston.
To solve the above problems, the utility model uses following technical scheme：Hydraulic drill piston, including piston base
The axial direction of body, piston matrix upper edge piston matrix offers leading portion matrix annular groove, stage casing matrix annular groove and back segment base successively
Body annular groove, sintering has self-lubricating respectively in the slot of leading portion matrix annular groove, stage casing matrix annular groove and back segment matrix annular groove
Performance is good, impact-resistant modified PE EK composite materials.
It is that the utility model advanced optimizes said program below：The thickness of the modified PE EK Composite Sinterings
Be set as 0.5 ± 0.1mm, and the periphery of modified PE EK composite materials higher than this section on piston matrix 1 periphery 0.25 ±
0.01mm。
It advanced optimizes：It is set respectively on the leading portion matrix annular groove, stage casing matrix annular groove and back segment matrix annular groove
It is equipped with the thread groove being used cooperatively with modified PE EK composite materials.
It advanced optimizes：The screw pitch of each thread groove is respectively 1 ± 0.1mm.
The utility model is made by polyether-ether-ketone PEEK of the addition with excellent self lubricity characteristic in the utility model
Piston be suitable for being strict with the occasion of low-friction coefficient and abrasion performance purposes, and the composite material corrosion resistance being produced from it
Preferably, there is intensity height, the characteristics such as impact resistance especially to have more good abrasion resistance properties under the conditions of water lubrication, in addition living
Plug matrix is formed by specific alloy steel heat treatment, is had good comprehensive mechanical performance, has been prevented hydraulic drill piston every
Minute, 1950 lower grinding for mating surface of high frequency times movement hindered breakage problem, and be greatly improved hydraulic drill piston uses the longevity
Life.
The utility model is described in further detail with reference to the accompanying drawings and examples.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model in embodiment.
In figure：1- piston matrixes；2- modified PE EK composite materials；3-1- leading portion matrix annular grooves；The stage casings 3-2- substrate ring
Shape slot；3-3- back segment matrix annular grooves；4- thread grooves.
Specific implementation mode
Embodiment 1, as shown in Figure 1, hydraulic drill piston, including piston matrix 1,1 upper edge piston matrix 1 of piston matrix
Axial direction offer leading portion matrix annular groove 3-1, stage casing matrix annular groove 3-2 and back segment matrix annular groove 3-3, leading portion base successively
In the slot of body annular groove 3-1, stage casing matrix annular groove 3-2 and back segment matrix annular groove 3-3 respectively sintering have self-lubricating property it is good,
Impact-resistant modified PE EK composite materials 2.
The thickness that the modified PE EK composite materials 2 are sintered is set as 0.5 ± 0.1mm, and modified PE EK composite materials 2
Periphery is higher than the 0.25 ± 0.01mm of periphery of this section on piston matrix 1, and design is to realize that thin layer plastics are compound in this way
The feasibility of material sintering, and reserve allowance for grinding.
It is respectively set on the leading portion matrix annular groove 3-1, stage casing matrix annular groove 3-2 and back segment matrix annular groove 3-3
There is the thread groove 4 being used cooperatively with modified PE EK composite materials 2, and the screw pitch of each thread groove 4 is respectively 1 ± 0.1mm,
Design can increase the adhesive force between piston matrix 1 and modified PE EK composite materials 2 in this way.
The piston matrix 1 is thermally treated specific alloy steel part, which is 1Cr15Ni4Mo3N.
The production method of above-mentioned piston, includes the following steps：
A, inserts is placed
Hydraulic drill piston matrix 1 is put into the cavity of hot pressing die and is used as inserts；
B, modified PE EK is prepared
First by PEEK resins（Polyether-ether-ketone）60%、CF（Carbon fiber）20%, graphite fibre 2% and PTFE (polytetrafluoroethylene (PTFE))
18% plastic grain uniformly mixes in batch mixer by mass percentage, is placed in electrical heating baking oven, at 120 DEG C of setting
It is spare that obtained modified PE EK is dried under environment；
C, extrusion temperature is set
The extrusion temperature of modified PE EK is 330 DEG C on back segment matrix annular groove 3-3, modified on the matrix annular groove 3-2 of stage casing
The extrusion temperature of PEEK is 355 DEG C, and the extrusion temperature of modified PE EK is 360 DEG C on leading portion matrix annular groove 3-1；
D, injection molding
Mixed plastic grain material will be stirred evenly in step B to be added in the charging basket of injection molding machine, according to setting in step C
The temperature set is injected into mold cavity corresponding leading portion matrix annular groove 3-1, stage casing substrate ring respectively by the screw rod rifle of injection molding
It is modified PE EK composite materials 2 after modified PE EK moldings in shape slot 3-2 and back segment matrix annular groove 3-3；
E, cooling
Cooling under dwell condition, dwell pressure is 2000 tons, and mold temperature is made to be demoulded when dropping to 150 DEG C or less, is taken out
It is molded piston；
F, it grinds
Piston obtained in step E is put to cylindrical grinder grinding, and makes the modified PE EK composite woods at sintering position
The outer circle of material 2 reaches finished product requirement, and the friction coefficient of sintered surface is below 0.05 after processing.
Embodiment 2, the production method of piston, includes the following steps in embodiment 1：
A, inserts is placed
Hydraulic drill piston matrix 1 is put into the cavity of hot pressing die and is used as inserts；
B, modified PE EK is prepared
First by PEEK resins（Polyether-ether-ketone）60%、CF（Carbon fiber）18%, graphite fibre 2% and PTFE (polytetrafluoroethylene (PTFE))
20% plastic grain uniformly mixes in batch mixer by mass percentage, is placed in electrical heating baking oven, at 120 DEG C of setting
It is spare that obtained modified PE EK is dried under environment；
C, extrusion temperature is set
The extrusion temperature of modified PE EK is 335 DEG C on back segment matrix annular groove 3-3, modified on the matrix annular groove 3-2 of stage casing
The extrusion temperature of PEEK is 360 DEG C, and the extrusion temperature of modified PE EK is 365 DEG C on leading portion matrix annular groove 3-1；
D, injection molding
Mixed plastic grain material will be stirred evenly in step B to be added in the charging basket of injection molding machine, according to setting in step C
The temperature set is injected into mold cavity corresponding leading portion matrix annular groove 3-1, stage casing substrate ring respectively by the screw rod rifle of injection molding
It is modified PE EK composite materials 2 after modified PE EK moldings in shape slot 3-2 and back segment matrix annular groove 3-3；
E, cooling
Cooling under dwell condition, dwell pressure is 2000 tons, and mold temperature is made to be demoulded when dropping to 150 DEG C or less, is taken out
It is molded piston；
F, it grinds
Piston obtained in step E is put to cylindrical grinder grinding, and makes the modified PE EK composite woods at sintering position
The outer circle of material 2 reaches finished product requirement, and the friction coefficient of sintered surface is below 0.05 after processing.
Embodiment 3, the production method of piston, includes the following steps in embodiment 1：
A, inserts is placed
Hydraulic drill piston matrix 1 is put into the cavity of hot pressing die and is used as inserts；
B, modified PE EK is prepared
First by PEEK resins（Polyether-ether-ketone）65%、CF（Carbon fiber）16%, graphite fibre 3% and PTFE (polytetrafluoroethylene (PTFE))
16% plastic grain uniformly mixes in batch mixer by mass percentage, is placed in electrical heating baking oven, at 120 DEG C of setting
It is spare that obtained modified PE EK is dried under environment；
C, extrusion temperature is set
The extrusion temperature of modified PE EK is 340 DEG C on back segment matrix annular groove 3-3, modified on the matrix annular groove 3-2 of stage casing
The extrusion temperature of PEEK is 365 DEG C, and the extrusion temperature of modified PE EK is 370 DEG C on leading portion matrix annular groove 3-1；
D, injection molding
Mixed plastic grain material will be stirred evenly in step B to be added in the charging basket of injection molding machine, according to setting in step C
The temperature set is injected into mold cavity corresponding leading portion matrix annular groove 3-1, stage casing substrate ring respectively by the screw rod rifle of injection molding
It is modified PE EK composite materials 2 after modified PE EK moldings in shape slot 3-2 and back segment matrix annular groove 3-3；
E, cooling
Cooling under dwell condition, dwell pressure is 2000 tons, and mold temperature is made to be demoulded when dropping to 150 DEG C or less, is taken out
It is molded piston；
F, it grinds
Piston obtained in step E is put to cylindrical grinder grinding, and makes the modified PE EK composite woods at sintering position
The outer circle of material 2 reaches finished product requirement, and the friction coefficient of sintered surface is below 0.05 after processing.
Embodiment 4, the production method of piston, includes the following steps in embodiment 1：
A, inserts is placed
Hydraulic drill piston matrix 1 is put into the cavity of hot pressing die and is used as inserts；
B, modified PE EK is prepared
First by PEEK resins（Polyether-ether-ketone）70%、CF（Carbon fiber）13%, graphite fibre 4% and PTFE (polytetrafluoroethylene (PTFE))
13% plastic grain uniformly mixes in batch mixer by mass percentage, is placed in electrical heating baking oven, at 120 DEG C of setting
It is spare that obtained modified PE EK is dried under environment；
C, extrusion temperature is set
The extrusion temperature of modified PE EK is 338 DEG C on back segment matrix annular groove 3-3, modified on the matrix annular groove 3-2 of stage casing
The extrusion temperature of PEEK is 362 DEG C, and the extrusion temperature of modified PE EK is 368 DEG C on leading portion matrix annular groove 3-1；
D, injection molding
Mixed plastic grain material will be stirred evenly in step B to be added in the charging basket of injection molding machine, according to setting in step C
The temperature set is injected into mold cavity corresponding leading portion matrix annular groove 3-1, stage casing substrate ring respectively by the screw rod rifle of injection molding
It is modified PE EK composite materials 2 after modified PE EK moldings in shape slot 3-2 and back segment matrix annular groove 3-3；
E, cooling
Cooling under dwell condition, dwell pressure is 2000 tons, and mold temperature is made to be demoulded when dropping to 150 DEG C or less, is taken out
It is molded piston；
F, it grinds
Piston obtained in step E is put to cylindrical grinder grinding, and makes the modified PE EK composite woods at sintering position
The outer circle of material 2 reaches finished product requirement, and the friction coefficient of sintered surface is below 0.05 after processing.
The utility model is made by polyether-ether-ketone PEEK of the addition with excellent self lubricity characteristic in the utility model
Piston be suitable for being strict with the occasion of low-friction coefficient and abrasion performance purposes, and the composite material corrosion resistance being produced from it
Preferably, there is intensity height, the characteristics such as impact resistance especially to have more good abrasion resistance properties under the conditions of water lubrication, in addition living
Plug matrix is formed by specific alloy steel heat treatment, is had good comprehensive mechanical performance, has been prevented hydraulic drill piston every
Minute, 1950 lower grinding for mating surface of high frequency times movement hindered breakage problem, and be greatly improved hydraulic drill piston uses the longevity
Life.
Claims (4)
1. hydraulic drill piston, including piston matrix（1）, it is characterised in that：Piston matrix（1）Upper edge piston matrix（1）'s
It is axial to offer leading portion matrix annular groove successively（3-1）, stage casing matrix annular groove（3-2）With back segment matrix annular groove（3-3）, preceding
Duan Jiti annular grooves（3-1）, stage casing matrix annular groove（3-2）With back segment matrix annular groove（3-3）Slot in respectively sintering have from
Greasy property is good, impact-resistant modified PE EK composite materials（2）.
2. hydraulic drill piston according to claim 1, it is characterised in that：The modified PE EK composite materials（2）It burns
The thickness of knot is set as 0.5 ± 0.1mm, and modified PE EK composite materials（2）Periphery higher than on piston matrix 1 this section it is outer
0.25 ± 0.01mm of disc.
3. hydraulic drill piston according to claim 2, it is characterised in that：The leading portion matrix annular groove（3-1）, in
Duan Jiti annular grooves（3-2）With back segment matrix annular groove（3-3）On be respectively arranged with and modified PE EK composite materials（2）Cooperation makes
Thread groove（4）.
4. hydraulic drill piston according to claim 3, it is characterised in that：Each thread groove（4）Screw pitch
Respectively 1 ± 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721794643.3U CN207830544U (en) | 2017-12-20 | 2017-12-20 | Hydraulic drill piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721794643.3U CN207830544U (en) | 2017-12-20 | 2017-12-20 | Hydraulic drill piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207830544U true CN207830544U (en) | 2018-09-07 |
Family
ID=63388145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721794643.3U Active CN207830544U (en) | 2017-12-20 | 2017-12-20 | Hydraulic drill piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207830544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893849A (en) * | 2017-12-20 | 2018-04-10 | 山东天瑞重工有限公司 | Hydraulic drill piston and preparation method thereof |
-
2017
- 2017-12-20 CN CN201721794643.3U patent/CN207830544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107893849A (en) * | 2017-12-20 | 2018-04-10 | 山东天瑞重工有限公司 | Hydraulic drill piston and preparation method thereof |
| CN107893849B (en) * | 2017-12-20 | 2023-09-12 | 山东天瑞重工有限公司 | Hydraulic rock drill piston and manufacturing method thereof |
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