CN213898897U - Novel pneumatic safety door of open type power tongs - Google Patents
Novel pneumatic safety door of open type power tongs Download PDFInfo
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- CN213898897U CN213898897U CN202022864195.8U CN202022864195U CN213898897U CN 213898897 U CN213898897 U CN 213898897U CN 202022864195 U CN202022864195 U CN 202022864195U CN 213898897 U CN213898897 U CN 213898897U
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- safety door
- cylinder
- latch
- open type
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Abstract
The utility model relates to a novel pneumatic safety door of open type power tongs, which comprises a connecting plate, a cylinder rotating shaft, a safety door cylinder, a pin shaft, a tongs shell, a latch and a latch shaft, wherein the pneumatic safety door is fixed at one side of the front end opening of the tongs shell through the connecting plate and the latch shaft, the safety door cylinder drives the latch to open and close, the safety door cylinder comprises an upper end cover, a reset spring, an integrated piston and a fork head, the safety door cylinder is vertically installed, and an ear ring on the upper end cover is hinged with the cylinder rotating shaft fixed on the connecting plate; the lower end of the integrated piston is connected with a fork head, and the fork head is hinged with one end of a latch through a pin shaft; the reset spring is arranged in the integrated piston, and the other end of the reset spring is propped against the rodless cavity of the safety door cylinder. The utility model discloses simple structure, part are few and emergency exit cylinder air inlet P can be connected with power tong pneumatic control system, realize the interconnection interlocking with the relevant running gear of power tong to reach protective apparatus and operating personnel's purpose.
Description
Technical Field
The utility model relates to a pneumatic emergency exit of tubular column screw thread open type power tong on being used for oil field mining site.
Background
Because of the need of safe operation at the well mouth, the open type hydraulic power tongs require a safety protection device to be arranged at the opening, and the common method is to arrange an unloading mechanism at the safety door, and when the safety door is opened, the motor is in an unloading state through the unloading mechanism to stop the rotation of the tong head. The protection mode is applied to a pure hydraulic control or manual opening and closing safety door. Although the open type power tongs of the chinese patent 01113627.8 can realize pneumatic and hydraulic hybrid control of the safety door and is also linked with a clamping device, the safety door driving mechanism is complex, the lower end of a safety door cylinder piston is connected with a rack, the rack and a safety door gear form a gear pair, and the back of the rack is matched with a roller for centralizing and guiding. This structure adopts rack drive mechanism, has drilling fluids such as mud under the circumstances at the scene, and the rack gets into debris easily and the jam, and the fault rate is high, and this structure is complicated moreover, the friction face is many, weight is big, leads to emergency exit cylinder reset spring resilience force to weaken, has the pole chamber to bleed slowly, and then emergency exit opening speed is slow, and the interval time is long, and power tong operation is slow, can not adapt to well site operation needs.
Disclosure of Invention
In order to solve the technical problem, the utility model provides a novel pneumatic emergency exit of open type power tong.
The technical scheme adopted by the utility model is to provide a novel pneumatic safety door of open type power tongs, which comprises a connecting plate, a cylinder rotating shaft, a safety door cylinder, a pin shaft, a tongs shell, a bolt and a bolt shaft, wherein the pneumatic safety door is fixed on one side of the front end opening of the tongs shell through the connecting plate and the bolt shaft, the safety door cylinder drives the bolt to open and close, the safety door cylinder comprises an upper end cover, a reset spring, an integrated piston and a fork head, the safety door cylinder is vertically installed, and an ear ring on the upper end cover is hinged with the cylinder rotating shaft fixed on the connecting plate;
the lower end of the integrated piston is connected with a fork head, and the fork head is hinged with one end of a latch through a pin shaft;
the reset spring is arranged in the integrated piston, and the other end of the reset spring is propped against the rodless cavity of the safety door cylinder.
And an air inlet of the safety door cylinder is formed in one side of the rod cavity.
One end of the bolt is hinged on the tong shell through a bolt shaft.
The other end of the bolt is of a T-shaped structure, and the T-shaped structure can be clamped into a groove on the other side of the front end opening of the tong shell.
In the technical scheme, when air enters from the P port, the cylinder pulls the latch to rotate and close rapidly, the T-shaped structure at the other end of the latch is clamped into the groove at the other side of the opening at the front end of the tong shell, so that the openings of the power tongs are connected into a whole to increase the strength; when the P port stops supplying air and is in an opening state, the safety door cylinder return spring rapidly pushes the bolt to rotate and open, and the tubular column can conveniently enter and exit.
The utility model has the effects that emergency exit cylinder and latch hinged joint, latch pass through the latch axle and articulate on the tong casing, simple structure, part are few, and emergency exit cylinder reset spring resilience force is big, and then the latch is opened fastly, and emergency exit cylinder air inlet P can be connected with power tong air control system in addition, realizes the interlocking of interconnection with the relevant running gear of power tong to reach protective apparatus and operating personnel's purpose.
Drawings
The present invention will be further explained with reference to the accompanying drawings;
fig. 1 is a top view of the present invention;
fig. 2 is a sectional view a-a of fig. 1 (door latch closed state);
fig. 3 is a sectional view (door latch open state) a-a of fig. 1.
In the figure: 1. a coupling plate; 2. a cylinder rotating shaft; 3. a safety door cylinder; 301. an upper end cover; 302. a return spring; 303. an integral piston; 304. a fork head; 4. a pin shaft; 5. a tong housing; 6. a latch; 7. a latch shaft; p. an air inlet.
Detailed Description
In fig. 1, 2 and 3, a novel pneumatic safety door of open type power tongs comprises a connecting plate 1, a cylinder rotating shaft 2, a safety door cylinder 3, a pin shaft 4, a tongs housing 5, a bolt 6 and a bolt shaft 7, wherein the pneumatic safety door is fixed on one side of an opening at the front end of the tongs housing 5 through the connecting plate 1 and the bolt shaft 7, the safety door cylinder 3 drives the bolt 6 to open and close, the safety door cylinder 3 comprises an upper end cover 301, a reset spring 302, an integrated piston 303 and a fork head 304, the safety door cylinder 3 is vertically installed, and an ear ring on the upper end cover 301 is hinged with the cylinder rotating shaft 2 fixed on the connecting plate 1; the lower end of the integrated piston 303 is connected with a fork head 304, and the fork head 304 is hinged with one end of a door bolt 6 through a pin shaft 4; the return spring 302 is arranged in the integrated piston 303, and the other end of the return spring 302 is abutted against the rodless cavity of the safety door cylinder 3. And the air inlet of the safety door cylinder 3 is arranged on one side of the rod cavity. One end of the bolt 6 is hinged on the tong housing 5 through a bolt shaft 7.
The other end of the bolt 6 is of a T-shaped structure, and the T-shaped structure can be clamped into a groove on the other side of the front end opening of the tong shell 5.
In the technical scheme, when air enters from the port P, the cylinder pulls the bolt 6 to rotate and close rapidly, the T-shaped structure at the other end of the bolt 6 is clamped into the groove at the other side of the opening at the front end of the tong shell 5, so that the openings of the power tongs are connected into a whole to increase the strength; when the port P stops supplying air and is in an open state, the reset spring 302 of the safety door cylinder 3 quickly pushes the bolt 6 to rotate and open, so that the pipe column can conveniently enter and exit.
Claims (4)
1. The utility model provides a novel pneumatic emergency exit of open type power tong, contains connecting plate, cylinder pivot, emergency exit cylinder, round pin axle, tong casing, latch axle, pneumatic emergency exit passes through connecting plate and latch axle to be fixed in tong casing front end opening one side, and its emergency exit cylinder drives the latch switching, its characterized in that:
the safety door cylinder comprises an upper end cover, a return spring, an integrated piston and a fork head, the safety door cylinder is vertically installed, and an earring on the upper end cover is hinged with a cylinder rotating shaft fixed on a connecting plate;
the lower end of the integrated piston is connected with a fork head, and the fork head is hinged with one end of a latch through a pin shaft;
the reset spring is arranged in the integrated piston, and the other end of the reset spring is propped against the rodless cavity of the safety door cylinder.
2. The novel pneumatic safety door of open type power tongs according to claim 1, characterized in that: and an air inlet of the safety door cylinder is formed in one side of the rod cavity.
3. The novel pneumatic safety door of open type power tongs according to claim 1, characterized in that: one end of the bolt is hinged on the tong shell through a bolt shaft.
4. A novel pneumatic safety door for open type power tongs according to claim 1 or 3, further characterized in that: the other end of the bolt is of a T-shaped structure, and the T-shaped structure can be clamped into a groove on the other side of the front end opening of the tong shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022864195.8U CN213898897U (en) | 2020-12-03 | 2020-12-03 | Novel pneumatic safety door of open type power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022864195.8U CN213898897U (en) | 2020-12-03 | 2020-12-03 | Novel pneumatic safety door of open type power tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213898897U true CN213898897U (en) | 2021-08-06 |
Family
ID=77100043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022864195.8U Active CN213898897U (en) | 2020-12-03 | 2020-12-03 | Novel pneumatic safety door of open type power tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213898897U (en) |
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2020
- 2020-12-03 CN CN202022864195.8U patent/CN213898897U/en active Active
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