CN203716891U - Double-layer planetary claw clamping mechanism for main tongs of open power tongs - Google Patents
Double-layer planetary claw clamping mechanism for main tongs of open power tongs Download PDFInfo
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- CN203716891U CN203716891U CN201420065894.8U CN201420065894U CN203716891U CN 203716891 U CN203716891 U CN 203716891U CN 201420065894 U CN201420065894 U CN 201420065894U CN 203716891 U CN203716891 U CN 203716891U
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- planet
- planetary
- gear
- junction plate
- mandrel
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Abstract
The utility model relates to the technical field of hydraulic power tongs for the breakout of threads on pipe columns, in particular to a double-layer planetary claw clamping mechanism for main tongs of open power tongs. The mechanism comprises a brake mechanism, a clamping mechanism, a reversing mechanism, a gear transmission mechanism, a plurality of mandrels, an upper planetary claw cover plate, an upper planetary claw connecting plate, a planetary connecting plate and a lower planetary claw connecting plate, wherein a planetary gear and a planetary claw are arranged on each mandrel through a key bar; the planetary gears are meshed with a brake gear ring in a brake drum through a guide wheel to transmit torque, so that a pipe column is clamped by an outer curved tooth plate of each planetary claw. By applying the mechanism, disclosed by the utility model, upper and lower layers of planetary claws are adopted, uniform structural stress is ensured, and a pipe body is clamped in two blocks, so that the stress deformation of the pipe body is greatly reduced; when the tongs reach the torque, the opening deformation is slight, and the mechanism is stable in structure, reliable in running and convenient to use and maintain; the mechanism has the advantages of simple structure, reasonable setting, low manufacturing cost and the like.
Description
Technical field
The utility model relates to the hydraulic power tongs technical field of unloading tubing string screw thread, particularly a kind of double-deck Planetary Grip Mechanism of opening power pincers.
Background technology
The main ramp formula of the main pincers fasten of existing powered splitting pliers curved surface rollers clamping body, its principal organ's form is: in the cavity of gear and the containing of opening gear cap, at opening gear and opened between ability to speak wheel cap roller is set, ramp is set on jaw, and jaw is arranged on jaw plate frame by rotating shaft, in the time that opening gear rotates with respect to jaw plate frame, roller is with respect to the domatic rolling climbing of jaw, jaw rotates around the axis, and makes dental lamina contact pipe, unloads gas pipe thread operation in realization.The location point of this each ramp of Power Tong can only clamp a kind of specific caliber, the pipe that clamp different tube diameters need to change roller, jaw, tooth seat etc. part.This structure is not only complicated, and renewal part gives and manufacture maintenance and make troubles, and dental lamina can not automatic retraction in the time unclamping.For more existing adopt the Power Tong of individual layer planet pawl formula clamp mechanism, although solved the shortcoming of many ramp formula Power Tong clamping bodies from structure, also there is certain problem.First, planet pawl and gear parts cause clamping body to be subject in the axial direction force unbalance one on the other; The 2nd,, greasy dirt, silt etc. easily enters the part of gear engagement, causes gear wear to accelerate, and transmission is unreliable; The 3rd,, planetary gear transmits binding clip moment of torsion, must be by enough axial dimension for meeting the demands, and be prone to skidding; The 4th,, when individual layer planet pawl clamping body, the gripping range of body is concentrated, easily make body distortion; The 5th,, in opening gear cavity, lack gusset, pliers reaches after moment of torsion, and shedding deformation amount is large, has a strong impact on clamping effect, occurs skidding.
Utility model content
The purpose of this utility model is for the defect of prior art and deficiency, provides a kind of simple in structure, the double-deck Planetary Grip Mechanism of opening power pincers reasonable in design, easy to use.
For achieving the above object, the technical solution adopted in the utility model is:
The double-deck Planetary Grip Mechanism of a kind of opening power pincers described in the utility model, includes braking mechanism, clamping body, changement, gear drive, some mandrels, upper planet pawl cover plate, upper planet pawl junction plate, planet junction plate and lower planet pawl junction plates; The upper and lower two place's axle journals of mandrel are contained in respectively in the axis hole of opening on lower planet pawl junction plate and upper planet pawl cover plate, and the middle part of mandrel is through in planet junction plate and the set axis hole of upper planet pawl junction plate; Clamping body is made up of upper and lower two-layer planet layer, and every layer of planet layer is laid with several planet pawls, and the two ends of mandrel are all fixedly connected by key bar and planet pawl, and planet pawl is provided with outcurve dental lamina; Gear drive is installed between planet junction plate and upper planet pawl junction plate, gear drive is made up of mandrel, opening gear, planetary gear, guide wheel and splined shaft, and two place's axle journals up and down of splined shaft are nested in respectively in planet junction plate and the set axis hole of upper planet pawl junction plate; Guide wheel is closely nested on splined shaft, and planetary gear is meshed with the braking gear ring in brake rim by guide wheel; Planetary gear is fixedly connected on mandrel by key bar; The open slot of opening gear is connected with brake rim; Braking mechanism is mainly by braking gear ring and brake rim, and brake rim is fixedly connected with braking gear ring; Changement is mainly made up of reversing cover and knob, and changement is installed in the upper end of any mandrel.
Further, described braking mechanism also includes tight fixed bolt and brake block, and brake block is connected on shell by tight fixed bolt, and brake block contacts with brake rim outside.
Further, the circle at the center line place of each mandrel and opening gear are concentric circles.
Further, the quantity of described mandrel is four, and every layer of planet layer is laid with four planet pawls.
Adopt after said structure, the utility model beneficial effect is: the double-deck Planetary Grip Mechanism of a kind of opening power pincers described in the utility model, includes braking mechanism, clamping body, changement, gear drive, some mandrels, upper planet pawl cover plate, upper planet pawl junction plate, planet junction plate and lower planet pawl junction plates; On each mandrel, by key bar, planetary gear, planet pawl are housed, planetary gear is by guide wheel and brake gear ring engaged transmission moment, thereby makes the outcurve dental lamina clamping tubing string of each planet pawl.In the time using the utility model, by adopting upper and lower two planet pawl designs layer by layer, this structure stress is even, divides two blocks to clamp to body, has greatly reduced the stress deformation amount of body; When pliers reaches moment of torsion, shedding deformation amount is little, and Stability Analysis of Structures is reliable, easy maintenance.The utlity model has simple in structurely, arrange rationally, the advantage such as cost of manufacture is low.
Brief description of the drawings
Fig. 1 is partial sectional view of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to view;
Fig. 3 is that the B-B of Fig. 1 is to view;
Fig. 4 is top view of the present utility model;
Description of reference numerals:
1, planet pawl; 2, outcurve dental lamina; 3, mandrel; 4, upper planet pawl junction plate;
5, braking gear ring; 7, opening gear; 8, planetary gear; 9, guide wheel; 10, splined shaft;
12, key bar; 13, planet junction plate; 14, brake rim; 15, knob;
16, reversing cover; 17, upper planet pawl cover plate; 18, lower planet pawl junction plate; 19, tight fixed bolt;
20, brake block.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As Figure 1-4, the double-deck Planetary Grip Mechanism of a kind of opening power pincers described in the utility model, includes braking mechanism, clamping body, changement, gear drive, some mandrels 3, upper planet pawl cover plate 17, upper planet pawl junction plate 4, planet junction plate 13 and lower planet pawl junction plates 18; The upper and lower two place's axle journals of mandrel 3 are contained in respectively in the axis hole of opening on lower planet pawl junction plate 18 and upper planet pawl cover plate 17, and the middle part of mandrel 3 is through in the set axis hole of planet junction plate 13 and upper planet pawl junction plate 17, and mandrel 3 can freely rotate;
Clamping body is made up of upper and lower two-layer planet layer, and every layer of planet layer is laid with several planet pawls 1, and the two ends of mandrel 3 are all fixedly connected by key bar 12 and planet pawl 1, and planet pawl 1 is provided with outcurve dental lamina 2;
Gear drive is installed between planet junction plate 13 and upper planet pawl junction plate 4, gear drive is made up of mandrel 3, opening gear 7, planetary gear 8, guide wheel 9 and splined shaft 10, two place's axle journals up and down of splined shaft 10 are nested in respectively in the set axis hole of planet junction plate 13 and upper planet pawl junction plate 4, and splined shaft 10 can freely rotate; Guide wheel 9 is closely nested on splined shaft 10, and planetary gear 8 is meshed with the braking gear ring 5 in brake rim 14 by guide wheel 9, carry-over moment; Planetary gear 8 is fixedly connected on mandrel 3 by key bar 12, thereby makes planet pawl 1 and planetary gear 8 realize synchronous rotation; The open slot of opening gear 7 is connected with brake rim 14;
Braking mechanism is mainly by braking gear ring 5 and brake rim 14, and brake rim 14 is fixedly connected with braking gear ring 5;
Changement is mainly made up of reversing cover 16 and knob 15, and changement is installed in the upper end of any mandrel 3.
As a kind of optimal way of this use utility model, described braking mechanism also includes tight fixed bolt 19 and brake block 20, brake block 20 is connected on shell by tight fixed bolt 19, and brake block 20 contacts with brake rim 14 outsides, just can regulate brake weight by tightening or unscrew tight fixed bolt 19.
As a kind of optimal way of this use utility model, circle and the opening gear 7 at the center line place of each mandrel 3 are concentric circles.
As a kind of optimal way of this use utility model, the quantity of described mandrel 3 is four, and every layer of planet layer is laid with four planet pawls 1.
Operating principle of the present utility model: while above button, the most advanced and sophisticated clockwise direction that points to of knob 15, in the time that binding clip assembly starts to rotate, brake rim 14 and braking gear ring 5 are temporarily braked, braking gear ring 5 rotations and the revolution of guide wheel 9 in brake rim 14, planetary gear 8 is rotated under the drive of guide wheel 9, thereby drive planet pawl 1 to rotate, make outcurve dental lamina 2 contact tubing string, binding clip assembly is rotated further and clamps, because brake rim 14 and braking gear ring 5 are fixed together, so in the time that the outside moment of torsion importing into is greater than brake control power, opening gear 7 just drives brake rim 14 together to rotate in company with tubing string, complete and pull work.Upper button is complete, and operation manual reverse of direction overflow combined valve makes the reversion of binding clip assembly, completes the action of reset alignment notch.
When shackle, knob 15 is most advanced and sophisticated to be pointed to counterclockwise, in the time that binding clip assembly starts to rotate, brake rim 14 and braking gear ring 5 are temporarily braked, braking gear ring 5 rotations and the revolution of guide wheel 9 in brake rim 14, planetary gear 8 under driving, guide wheel 9 is rotated, thereby drive planet pawl 1 to rotate, make outcurve dental lamina 2 depart from tubing string, binding clip assembly is rotated further and clamps, because brake rim 14 and braking gear ring 5 are fixed together, in the time of the about brake control power of moment of torsion that outside is imported into, opening gear 7 drives brake rim 14 together to rotate in company with tubing string, complete shackle action.Shackle is complete, and operation manual reverse of direction overflow combined valve makes the reversion of binding clip assembly, completes the action of reset alignment notch.
In the time using the utility model, by adopting upper and lower two planet pawl designs layer by layer, this structure stress is even, divides two blocks to clamp to body, has greatly reduced the stress deformation amount of body; When pliers reaches moment of torsion, shedding deformation amount is little, and Stability Analysis of Structures is reliable, easy maintenance.In addition, this is simple in structure, reasonable in design, low cost of manufacture.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (4)
1. a double-deck Planetary Grip Mechanism for opening power pincers, is characterized in that: include braking mechanism, clamping body, changement, gear drive, some mandrels (3), upper planet pawl cover plate (17), upper planet pawl junction plate (4), planet junction plate (13) and lower planet pawl junction plate (18); The upper and lower two place's axle journals of mandrel (3) are contained in respectively in the axis hole of opening on lower planet pawl junction plate (18) and upper planet pawl cover plate (17), and the middle part of mandrel (3) is through in the set axis hole of planet junction plate (13) and upper planet pawl junction plate (17);
Clamping body is made up of upper and lower two-layer planet layer, and every layer of planet layer is laid with several planet pawls (1), and the two ends of mandrel (3) are all fixedly connected by key bar (12) and planet pawl (1), and planet pawl (1) is provided with outcurve dental lamina (2);
Gear drive is installed between planet junction plate (13) and upper planet pawl junction plate (4), gear drive is made up of mandrel (3), opening gear (7), planetary gear (8), guide wheel (9) and splined shaft (10), and two place's axle journals up and down of splined shaft (10) are nested in respectively in the set axis hole of planet junction plate (13) and upper planet pawl junction plate (4); It is upper that guide wheel (9) is closely nested in splined shaft (10), and planetary gear (8) is meshed with the braking gear ring (5) in brake rim (14) by guide wheel (9), carry-over moment; It is upper that planetary gear (8) is fixedly connected on mandrel (3) by key bar (12), rotates thereby planet pawl (1) and planetary gear (8) are realized synchronously; The open slot of opening gear (7) is connected with brake rim (14);
Braking mechanism is mainly by braking gear ring (5) and brake rim (14), and brake rim (14) is fixedly connected with braking gear ring (5);
Changement is mainly made up of reversing cover (16) and knob (15), and changement is installed in the upper end of any mandrel (3).
2. the double-deck Planetary Grip Mechanism of a kind of opening power pincers according to claim 1, it is characterized in that: described braking mechanism also includes tight fixed bolt (19) and brake block (20), brake block (20) is connected on shell by tight fixed bolt (19), and brake block (20) contacts with brake rim (14) outside, just can regulate brake weight by tightening or unscrew tight fixed bolt (19).
3. the double-deck Planetary Grip Mechanism of a kind of opening power pincers according to claim 1, is characterized in that: the circle at the center line place of each mandrel (3) and opening gear (7) are concentric circles.
4. according to the double-deck Planetary Grip Mechanism of the arbitrary described a kind of opening power pincers of claim 1 or 3, it is characterized in that: the quantity of described mandrel (3) is four, every layer of planet layer is laid with four planet pawls (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065894.8U CN203716891U (en) | 2014-02-14 | 2014-02-14 | Double-layer planetary claw clamping mechanism for main tongs of open power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420065894.8U CN203716891U (en) | 2014-02-14 | 2014-02-14 | Double-layer planetary claw clamping mechanism for main tongs of open power tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203716891U true CN203716891U (en) | 2014-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420065894.8U Withdrawn - After Issue CN203716891U (en) | 2014-02-14 | 2014-02-14 | Double-layer planetary claw clamping mechanism for main tongs of open power tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203716891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883272A (en) * | 2014-02-14 | 2014-06-25 | 江苏申利达机械制造有限公司 | Double-layer planet claw clamping mechanism of main tongs of open-type power tongs |
-
2014
- 2014-02-14 CN CN201420065894.8U patent/CN203716891U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883272A (en) * | 2014-02-14 | 2014-06-25 | 江苏申利达机械制造有限公司 | Double-layer planet claw clamping mechanism of main tongs of open-type power tongs |
| CN103883272B (en) * | 2014-02-14 | 2016-03-16 | 江苏申利达机械制造有限公司 | A kind of double-deck Planetary Grip Mechanism of opening power pincers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20160316 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |