CN201605996U - Friction sheet hydraulic jack drill rotating mechanism - Google Patents
Friction sheet hydraulic jack drill rotating mechanism Download PDFInfo
- Publication number
- CN201605996U CN201605996U CN2010201133421U CN201020113342U CN201605996U CN 201605996 U CN201605996 U CN 201605996U CN 2010201133421 U CN2010201133421 U CN 2010201133421U CN 201020113342 U CN201020113342 U CN 201020113342U CN 201605996 U CN201605996 U CN 201605996U
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- Prior art keywords
- friction sheet
- bit shank
- friction
- friction plate
- sheet
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Abstract
The utility model discloses a friction sheet hydraulic jack drill rotating mechanism, which comprises supports arranged on a box cover and a box body and used for positioning two shaft ends of a drill shank spline shaft. A gear is installed on an outer spline of the drill shank spline shaft; a drill shank is installed on an inner spline of the drill shank spline shaft; the supports at two ends of the drill shank spline shaft are respectively a front sliding bearing and a rear sliding bearing (to realize radial supporting for the drill shank spline shaft) and a front fixed friction sheet and a rear fixed friction sheet which contact with the end surfaces of the inner sides of the front sliding bearing and the rear sliding bearing; two sides of the outer spline of the drill shank spline shaft are respectively fixedly connected with a front movable friction sheet and a rear movable friction sheet; the front movable friction sheet is in clearance fit with the front fixed friction sheet; the rear movable friction sheet is in clearance fit with the rear fixed friction sheet; and a pair of the front friction sheets and a pair of the rear friction sheets realize axial supporting for the drill shank spline shaft and bear axial impact force. The rotating mechanism solves the difficult problem that a rolling bearing bears high-frequency impact and is easy to be damaged, improves working stability of the jack drill swinging mechanism, and reduces maintenance frequency and cost.
Description
(1) technical field:
The utility model relates to the hydraulic gate parts, is a kind of friction disk type hydraulic gate slew gear specifically.
(2) background technology:
Hydraulic gate (YYG series) can be used for every field such as mine excavation, tunnel piercing and construction work, also can be used as the tapping outlet equipment of blast furnace stokehold.
The basic functional principle of hydraulic gate:
Mainly by impacting and the revolution two large divisions forms, the ante-chamber of beater mechanism is pressed oil to hydraulic gate (YYG series) usually, by the commutation of one pair of sleeve valve control the advancing of back cavity, oil return realizes the reciprocal high-frequency percussion campaign of piston in cylinder sleeve; Slew gear is then realized the gyration of bit shank by a high pulling torque slow-speed of revolution cycloid hydraulic motor.
Bit shank is subjected to the turning effort of hydraulic motor when bearing the reciprocal high-frequency percussion of piston, under the effect of twisting resistance, the frictional force of bit shank external splines and bit shank splined shaft internal spline cooperation place can pass to the part impact energy of piston on the taper roll bearing at bit shank splined shaft two ends, and the high-frequency percussion of piston causes the damage of taper roll bearing easily.
(3) utility model content:
At the weak point of the hydraulic gate slew gear of traditional round taper roller bearing structure, the purpose of this utility model has provided a kind of friction disk type hydraulic gate slew gear that can afford the piston high-frequency percussion.
Can realize the friction disk type hydraulic gate slew gear of above-mentioned purpose, comprise and be installed in the supporting of on case lid and the casing bit shank splined shaft two axial ends being located, on the external splines of bit shank splined shaft gear is installed, in the internal spline of bit shank splined shaft bit shank is installed, different is that (the bit shank spline axle head of case lid one side is a front end with bit shank splined shaft two axial ends in the utility model, the bit shank spline axle head of casing one side is the rear end) former rolling bearing change front slide bearing and preceding fixed friction sheet respectively into, back sliding bearing and back fixed friction sheet, preceding fixed friction sheet, back fixed friction sheet all contacts at the front slide bearing, the inner face of back sliding bearing, the movable friction plate of movable friction plate and back before on the bit shank splined shaft axle journal of gear both sides, being connected respectively, between preceding movable friction plate and the preceding fixed friction sheet, the movable friction plate in back with and back fixed friction sheet between be matched in clearance, total backlash 0.5mm is by relevant seam assurance on casing and the case lid between the two secondary friction plates of front and back.
In described structure, radially locating of bit shank splined shaft by forward and backward sliding bearing, axially locate by two secondary friction plates (preceding fixed friction sheet and preceding movable friction plate, the movable friction plate of back fixed friction sheet and back), the axial impact force of bit shank splined shaft two axial ends is born by two secondary friction plates, compares with rolling bearing to have the bigger ability that withstands shocks.
In order to reduce the friction factor between the friction plate, on the operative end surface of each secondary friction plate, offer oil storage tank respectively, add high temperature resistant antiwear lubricating grease in the oil storage tank to improve the application life of friction plate.
Oil storage tank is generally circular groove, and for improving lubricant effect, circular groove is eccentric to be provided with.
According to the hydraulic gate of different size model, described off-centre operation groove center and axis deviation scope are selected between 4mm～6mm, and off-centre operation well width scope is selected between 7mm～9mm, and the off-centre operation groove depth is selected between 1mm～2mm.
According to the hydraulic gate of different size model, the thickness of described each friction plate is selected between 13mm～16mm.
Advantage of the present utility model:
The utility model changes bit shank splined shaft two terminal circle taper roller bearing in the hydraulic gate slew gear into sliding bearing, the high-frequency percussion of adopting friction plate to bear piston, solve rolling bearing and born the difficult problem that high-frequency percussion damages easily, the structure of the eccentric oil groove of friction plate working surface can guarantee very low friction factor between two relative friction plate working surfaces, slew gear is rotated flexibly, can improve the job stability of hydraulic gate slew gear significantly, reduce the frequency of maintenance and the maintenance cost of equipment.
(4) description of drawings:
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Figure number sign: 1, bit shank; 2, front slide bearing; 3, case lid; 4, alignment pin; 5, key; 6, gear; 7, casing; 8, back sliding bearing; 9, gland; 10, preceding fixed friction sheet; 11, preceding movable friction plate; 12, back-up ring; 13, bit shank splined shaft; 14, the movable friction plate in back; 15, back fixed friction sheet; 16, piston.
(5) specific embodiment:
The utility model friction disk type hydraulic gate slew gear comprises case lid 3, bit shank splined shaft 13, the supporting of bit shank splined shaft front and back end and gear 6, and the front slide bearing 2 that is respectively radially and back sliding bearing 8, axial preceding fixed friction sheet 10 and preceding movable friction plate 11 and back fixed friction sheet 15 and the movable friction plate 14 in back are supported in described bit shank splined shaft front and back end.
As shown in Figure 1, front slide bearing 2 and back sliding bearing 8 be coaxial to be installed in the axis hole of case lid 3 and casing 7, back sliding bearing 8 is by gland 9 axial limitings, fixed friction sheet 10 and back fixed friction sheet 15 before the coaxial installation of inner side end of described axis hole inner close fitting front slide bearing 2 and back sliding bearing 8, before fixed friction sheet 10 and back fixed friction sheet 15 be fixed on case lid 3 and the casing 7 with alignment pin 4 respectively, preceding fixed friction sheet 10 and after the other end of fixed friction sheet 15 stretch outside the medial surface of case lid 3 and casing 7.
The two axial ends of bit shank splined shaft 13 activity respectively is engaged in front slide bearing 2, preceding fixed friction sheet 10 and back sliding bearing 8, in the axis hole of back fixed friction sheet 15, gear 6 is installed on the external splines of bit shank splined shaft 13, preceding movable friction plate 11 of coaxial installing on the axle journal of gear 6 both sides bit shank splined shafts 13 (connecting) and the movable friction plate 14 in back by key 5, between preceding movable friction plate 11 and the preceding fixed friction sheet 10, be matched in clearance between movable friction plate 14 in back and the back fixed friction sheet 15, before and after between two secondary friction plates altogether the total backlash of 0.5mm by relevant seam assurance on casing 7 and the case lid 3, preceding movable friction plate 11, spacing between movable friction plate 14 in back and the gear 6 by back-up ring 12, as shown in Figure 1.
Before offer the circular oil storage tank of different eccentric distances on the contact end face on the contact end face between movable friction plate 11 and the preceding fixed friction sheet 10, between the movable friction plate 14 in back and the back fixed friction sheet 15 respectively, the eccentric distance of eccentric circular groove is 4mm～6mm, and the width of eccentric circular groove is that 7mm～9mm, off-centre operation groove depth are 1mm～2mm; Preceding movable friction plate 11 and preceding fixed friction sheet 10, the movable friction plate 14 in back are 13mm～16mm with the thickness of back fixed friction sheet 15.
During hydraulic gate work, motor drives 13 rotations of bit shank splined shaft by gear 6, and the relative two fixed friction sheets of two movable friction plates (preceding movable friction plate 11, the movable friction plate 14 in back) (preceding fixed friction sheet 10, back fixed friction sheet 15) rotate.The moment that 16 pairs of bit shanks 1 of piston are done ballistic motion, under the effect of rotation motor twisting resistance, the frictional force of the internal spline junction of the external splines of bit shank 1 and bit shank splined shaft 13 can pass to the part impact energy of piston 16 on the bit shank splined shaft 13, make and scurry before bit shank splined shaft 13 integral body, preceding movable friction plate 11 contacts opposing and impacts with preceding fixed friction sheet 10, because the twisting resistance that motor applies bit shank splined shaft 13 is much larger than the frictional force between friction plate, the flexibility that slew gear rotates can not be subjected to too much influence; Behind piston 16 rollbacks, the reaction force of bit shank 1 makes bit shank splined shaft 13 whole backs press again, the movable friction plate 14 in back contacts opposing with back fixed friction sheet 15 and impacts, this moment, movable friction plate showed as the power of sending to of sending motor to the pressure of fixed friction sheet, because the relative motion between the friction plate working surface is mill is moved between the oil immersion smooth surface, the twisting resistance that its frictional force applies bit shank splined shaft 13 much smaller than rotation motor equally, so, the flexibility that slew gear rotates can not influenced yet.
In addition, for improving friction plate intensity, sliding bearing and friction plate all adopt the design technology of alloy steel carburizing and working surface correct grinding.
Claims (6)
1. friction disk type hydraulic gate slew gear, comprise and be installed in case lid (3) and the last supporting of casing (7) bit shank splined shaft (13) two axial ends location, gear (6) is installed on the external splines of bit shank splined shaft (13), the internal spline of bit shank splined shaft (13) is installed bit shank (1), it is characterized in that: described bit shank splined shaft two supports is respectively front slide bearing (2) and back sliding bearing (8), and preceding fixed friction sheet (10) that contact with back sliding bearing (8) inner side end with front slide bearing (2) respectively and back fixed friction sheet (15), movable friction plate (11) and back movable friction plate (14) before the external splines both sides of bit shank splined shaft (13) are connected respectively are between preceding movable friction plate (11) and the preceding fixed friction sheet (10), be matched in clearance between back movable friction plate (14) and the back fixed friction sheet (15).
2. friction disk type hydraulic gate slew gear according to claim 1 is characterized in that: before described on movable friction plate (11) and the end face that preceding fixed friction sheet (10) contact, afterwards offer oil storage tank respectively on movable friction plate (14) and the end face that back fixed friction sheet (15) contacts.
3. friction disk type hydraulic gate slew gear according to claim 2 is characterized in that: described oil storage tank is eccentric circular groove.
4. friction disk type hydraulic gate slew gear according to claim 3 is characterized in that: described off-centre operation groove center and axis deviation 4mm～6mm.
5. friction disk type hydraulic gate slew gear according to claim 4 is characterized in that: described off-centre operation well width is 7mm～9mm, and the degree of depth is 1mm～2mm.
6. according to any one described friction disk type hydraulic gate slew gear in the claim 1～5, it is characterized in that: the thickness of described each friction plate is 13mm～16mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201133421U CN201605996U (en) | 2010-02-11 | 2010-02-11 | Friction sheet hydraulic jack drill rotating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201133421U CN201605996U (en) | 2010-02-11 | 2010-02-11 | Friction sheet hydraulic jack drill rotating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201605996U true CN201605996U (en) | 2010-10-13 |
Family
ID=42950702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201133421U Expired - Lifetime CN201605996U (en) | 2010-02-11 | 2010-02-11 | Friction sheet hydraulic jack drill rotating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201605996U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155151A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Rock drill rotational mechanism connected with spinning roller linear surface |
| CN102155152A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Gadder borer-turning mechanism connected with cosine tooth profile |
| CN102155153A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Rock drilling rotational mechanism connected with tooth profile molding surface of roller movable-tooth inner gear of eccentric wheel push rod |
| CN102168522A (en) * | 2011-03-11 | 2011-08-31 | 湖南恒至凿岩科技有限公司 | Drill rod rotating mechanism of rock drill connected by tooth profile shaped surface of swing active gear |
| CN102373881A (en) * | 2011-09-29 | 2012-03-14 | 河北宏远液压机械有限公司 | Hydraulic impact bearing mechanism for hydraulic rock drill |
| CN116752904A (en) * | 2023-06-26 | 2023-09-15 | 徐州徐工基础工程机械有限公司 | Double-layer structured drill shank and rotary system |
-
2010
- 2010-02-11 CN CN2010201133421U patent/CN201605996U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155151A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Rock drill rotational mechanism connected with spinning roller linear surface |
| CN102155152A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Gadder borer-turning mechanism connected with cosine tooth profile |
| CN102155153A (en) * | 2011-03-11 | 2011-08-17 | 湖南恒至凿岩科技有限公司 | Rock drilling rotational mechanism connected with tooth profile molding surface of roller movable-tooth inner gear of eccentric wheel push rod |
| CN102168522A (en) * | 2011-03-11 | 2011-08-31 | 湖南恒至凿岩科技有限公司 | Drill rod rotating mechanism of rock drill connected by tooth profile shaped surface of swing active gear |
| CN102373881A (en) * | 2011-09-29 | 2012-03-14 | 河北宏远液压机械有限公司 | Hydraulic impact bearing mechanism for hydraulic rock drill |
| CN102373881B (en) * | 2011-09-29 | 2013-12-11 | 河北宏远液压机械有限公司 | Hydraulic impact bearing mechanism for hydraulic rock drill |
| CN116752904A (en) * | 2023-06-26 | 2023-09-15 | 徐州徐工基础工程机械有限公司 | Double-layer structured drill shank and rotary system |
| CN116752904B (en) * | 2023-06-26 | 2024-03-08 | 徐州徐工基础工程机械有限公司 | Double-layer structured drill shank and rotary system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101013 |
|
| CX01 | Expiry of patent term |