CN204419075U - Piston hydraulic chuck - Google Patents
Piston hydraulic chuck Download PDFInfo
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- CN204419075U CN204419075U CN201520041623.3U CN201520041623U CN204419075U CN 204419075 U CN204419075 U CN 204419075U CN 201520041623 U CN201520041623 U CN 201520041623U CN 204419075 U CN204419075 U CN 204419075U
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- chuck
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Abstract
The utility model discloses a kind of piston hydraulic chuck, the housing comprising drive end bearing bracket, rear end cap and be arranged between forward and backward end cap, cylinder body is provided with in described housing, the elasticity slips for clamping drilling rod is provided with in described cylinder body, described cylinder body being also provided with multiple piston radially to chuck hub slip and for extruding elasticity slips, being also provided with between described cylinder body and housing and being convenient to the high-voltage oil cavity that hydraulic oil promotes piston movement.The utility model has abandoned the principle that traditional oild chuck open in usual adopts the clamping of gum cover extruding slips, and have employed the clamping of piston promotion slips, piston is as metal parts, and its life-span is obviously longer than the gum cover of rubber-like, thus avoids the problem of gum cover frequent breakage.
Description
Technical field
The utility model belongs to chuck of rig field, is specifically related to a kind of piston hydraulic chuck.
Background technology
Chuck is the vitals of of rig, and its function is clamping drilling rod, to drilling rod transmitting torque and axial force, drives drilling tool realize revolution and creep into.
The chuck of tradition coal mine drilling machine has following three kinds of structures: chuck open in usual, normally closed type chuck and hydraulic pressure degree of tightness type chuck, and wherein chuck open in usual uses the most extensive at present, all the other two kinds less uses.
Open type oild chuck adopts hydraulic clamp drilling rod, and spring unclamps slips, is in releasing orientation when chuck does not work, and the open type oild chuck on domestic drilling is rubber-sleeve type oild chuck, and its structure is shown in Fig. 1, and in figure, 1 for joining oil jacket; 2 is end cap; 3 is torque-transmission disk; 4 is housing; 5 is slips; 6 is gum cover; 7 is spring; 8 is support ring; 9 is torsion pass pin.Hydraulic oil injects through the aperture of joining on oil jacket and main shaft and chuck the cavity volume that the support ring in the middle part of gum cover formed with gum cover, and gum cover is subject to radial compression, forces slips group to move radially, thus clamps drilling rod.During oil return, slips group automatically resets under spring force.
Rubber-sleeve type oild chuck has the following disadvantages: (1), by chuck structure and gum cover Effect of Materials, gum cover is limited for application life, damages more frequent; (2) gap of cinder between slips enters the fitting face of gum cover and slips, further shorten the gum cover life-span; (3) subsurface environment is severe, and instrument is uneven, and changing gum cover wastes time and energy; (4) once gum cover damages inefficacy, chuck cannot clamp immediately, and drilling rod, still in chuck, cannot dismantle cartridge changing gum cover.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of piston hydraulic chuck, and object is: solve the following problem that rubber-sleeve type often opens oild chuck existence: 1. the problem of gum cover frequent breakage; 2. cinder enters the motion fitting face between gum cover and slips, shortens the key component such as gum cover, slips application life; 3. change the overlong time of gum cover part of damage; 4. gum cover damages, and chuck is entirely ineffective immediately, causes changing gum cover.
The purpose of this utility model is achieved through the following technical solutions:
A kind of piston hydraulic chuck, the housing comprising drive end bearing bracket, rear end cap and be arranged between forward and backward end cap, cylinder body is provided with in described housing, the elasticity slips for clamping drilling rod is provided with in described cylinder body, described cylinder body being also provided with multiple piston radially to chuck hub slip and for extruding elasticity slips, being also provided with between described cylinder body and housing and being convenient to the high-voltage oil cavity that hydraulic oil promotes piston movement.
Further, described elasticity slips comprises the metal claw of multiple circumference distribution, and be provided with elastic component between described adjacent metal pawl, described metal claw and elastic component are engaged formation overall structure mutually.
Further, described elastic component is elastomeric rubber strip.
Further, the oil duct that described high-voltage oil cavity communicates with the external world is separately positioned on housing and rear end cap, the hydraulic fluid port of described oil duct is provided with O RunddichtringO I, between described housing and cylinder body, is provided with O RunddichtringO II, between described piston and cylinder body, be provided with y-type seal ring and dust ring.
Further, described rear end cap is also provided with for being connected with main shaft and the terminal pad of transmitting torque and connecting pin.
The beneficial effects of the utility model are as follows:
1. the utility model has abandoned the principle that traditional oild chuck open in usual adopts the clamping of gum cover extruding slips, and have employed the clamping of piston promotion slips, piston is as metal parts, and its life-span is obviously longer than the gum cover of rubber-like, thus avoids the problem of gum cover frequent breakage.
2. elasticity slips of the present utility model is shaped by rubber and metal integral, and abandoned the spring reset structure in traditional chuck, overall structure is simple, easy for installation.
3. chuck of the present utility model is when changing inner body, cylinder body can be taken out together with the dress part such as piston, sealing ring thereon, significantly can save the field maintenance time, improve whole work efficiency.
4. chuck of the present utility model is when its some piston or sealing ring damage, although its clamping force can be subject to certain impact, and can not be entirely ineffective immediately, still can work on, can pull down resting on drilling rod in chuck, to dismantle chuck, changing the part damaged.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from practice of the present utility model.Target of the present utility model and other advantages can be realized by manual below and obtain.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
Fig. 1 is existing rubber-sleeve type oild chuck structural representation;
Fig. 2 is piston hydraulic chuck structure schematic diagram of the present utility model;
Fig. 3 is the A-A revolved sectional view of Fig. 2.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only in order to the utility model is described, instead of in order to limit protection domain of the present utility model.
As shown in the figure, a kind of piston hydraulic chuck, the housing 25 comprising drive end bearing bracket 211, rear end cap 24 and be arranged between forward and backward end cap, cylinder body 29 is provided with in described housing, the elasticity slips for clamping drilling rod is provided with in described cylinder body, described cylinder body being also provided with multiple piston 28 radially to chuck hub slip and for extruding elasticity slips, being also provided with between described cylinder body and housing and being convenient to the high-voltage oil cavity M that hydraulic oil promotes piston movement.
In the present embodiment, described elasticity slips comprises the metal claw 212 of multiple circumference distribution, be provided with elastic component 213 between described adjacent metal pawl, described metal claw and elastic component are engaged formation overall structure mutually, and the elastic component of this enforcement is elastomeric rubber strip.The elasticity slips of the present embodiment is made up of high elastic rubber and metal, when hydraulic oil extrusion piston, and piston press metal claw, high elastic rubber shrinks, and metal claw holds drilling rod tightly; Piston not pressurized time, rubber reset, the metal claw of elasticity slips opens, and unclamps drilling rod.
In the present embodiment, the oil duct that described high-voltage oil cavity communicates with the external world is separately positioned on housing and rear end cap, the hydraulic fluid port 20 of described oil duct is provided with O RunddichtringO I 22, be provided with O RunddichtringO II 210 between described housing and cylinder body, between described piston and cylinder body, be provided with y-type seal ring 27 and dust ring 26.The hermetically-sealed construction of the present embodiment, good sealing effect, can prevent cinder from entering slips inside simultaneously.
In the present embodiment, described rear end cap is also provided with for being connected with main shaft and the terminal pad 23 of transmitting torque and connecting pin 21.By terminal pad and connecting pin, moment of torsion is passed to chuck, chuck passes to drilling rod by slips, thus drives drilling rod to rotate.
The course of work of the present embodiment is as follows:
1. clamp
High pressure liquid force feed enters from hydraulic fluid port 20, oil duct through rear end cap 24 and housing 25 enters by housing 25, rear end cap 24, drive end bearing bracket 211), the cavity M that surrounds of piston 28 and cylinder body 29, these cavity two ends are sealed by O-ring seals II210, and radial direction is sealed by y-shaped ring 27.Hydraulic oil in cavity M promotes piston 28 and radially slides to chuck hub, thus forces elasticity slips to overcome caoutchouc elasticity power radially to move to chuck hub, can clamp drilling rod.
2. unclamp
The chuck of the present embodiment is open in usual, and when entering cavity M without hydraulic oil, metal claw 212 keeps open configuration under the resilient force of rubber.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a piston hydraulic chuck, the housing comprising drive end bearing bracket, rear end cap and be arranged between forward and backward end cap, it is characterized in that: in described housing, be provided with cylinder body, the elasticity slips for clamping drilling rod is provided with in described cylinder body, described cylinder body being also provided with multiple piston radially to chuck hub slip and for extruding elasticity slips, being also provided with between described cylinder body and housing and being convenient to the high-voltage oil cavity that hydraulic oil promotes piston movement.
2. piston hydraulic chuck according to claim 1, it is characterized in that: described elasticity slips comprises the metal claw of multiple circumference distribution, be provided with elastic component between described adjacent metal pawl, described metal claw and elastic component are engaged formation overall structure mutually.
3. piston hydraulic chuck according to claim 2, is characterized in that: described elastic component is elastomeric rubber strip.
4. piston hydraulic chuck according to claim 1, it is characterized in that: the oil duct that described high-voltage oil cavity communicates with the external world is separately positioned on housing and rear end cap, the hydraulic fluid port of described oil duct is provided with O RunddichtringO I, be provided with O RunddichtringO II between described housing and cylinder body, between described piston and cylinder body, be provided with y-type seal ring and dust ring.
5. piston hydraulic chuck according to claim 1, is characterized in that: described rear end cap is also provided with for being connected with main shaft and the terminal pad of transmitting torque and connecting pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520041623.3U CN204419075U (en) | 2015-01-21 | 2015-01-21 | Piston hydraulic chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520041623.3U CN204419075U (en) | 2015-01-21 | 2015-01-21 | Piston hydraulic chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204419075U true CN204419075U (en) | 2015-06-24 |
Family
ID=53469458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520041623.3U Active CN204419075U (en) | 2015-01-21 | 2015-01-21 | Piston hydraulic chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204419075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594826A (en) * | 2015-01-21 | 2015-05-06 | 中煤科工集团重庆研究院有限公司 | Piston type hydraulic chuck |
| CN104948129A (en) * | 2015-07-02 | 2015-09-30 | 淮南矿业(集团)有限责任公司 | Hole sealing pipe placing device |
-
2015
- 2015-01-21 CN CN201520041623.3U patent/CN204419075U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594826A (en) * | 2015-01-21 | 2015-05-06 | 中煤科工集团重庆研究院有限公司 | Piston type hydraulic chuck |
| CN104948129A (en) * | 2015-07-02 | 2015-09-30 | 淮南矿业(集团)有限责任公司 | Hole sealing pipe placing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |