CN202300249U - Power tongs with self-locking double bolt safety mechanism - Google Patents
Power tongs with self-locking double bolt safety mechanism Download PDFInfo
- Publication number
- CN202300249U CN202300249U CN2011203808360U CN201120380836U CN202300249U CN 202300249 U CN202300249 U CN 202300249U CN 2011203808360 U CN2011203808360 U CN 2011203808360U CN 201120380836 U CN201120380836 U CN 201120380836U CN 202300249 U CN202300249 U CN 202300249U
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- CN
- China
- Prior art keywords
- keeper
- stopcock
- power tongs
- self
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 210000003734 kidney Anatomy 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses power tongs with a self-locking double bolt safety mechanism. The power tongs comprise a tong body and a pneumatic control loop which controls the action of a tong head. A left bolt and a right bolt are fixed at a jaw of the tong body through a bolt shaft. A cock device is arranged on the bolt shaft and linked with the bolts, and controls the 'on' and 'off' of the pneumatic control loop. The power tongs have a rational structure; and the bolts are interlocked under pneumatic control, and when the two bolts of the power tongs are unlocked, an air source for making the tong head of the power tongs rotate or act is automatically cut off, and an operating air valve automatically fails, so that the tong head of the power tongs cannot rotate under the condition that the double bolts of the power tongs or a bolt on one side is unlocked to ensure the using safety of the power tongs or prevent a personal casualty accident caused by misoperation.
Description
Technical field
The utility model relates to a kind of oil and gas well drilling and uses power tongs.
Background technology
The available dynamic tong can not be guaranteed the safety of keeper opening, is prone to have an accident.
Summary of the invention
It is a kind of rational in infrastructure that the purpose of the utility model is to provide, the power tongs with self-locking double-open keeper release mechanism that job security is good.
The technical solution of the utility model is:
A kind of power tongs with self-locking double-open keeper release mechanism; The pneumatic control circuit that comprises caliper, the action of control binding clip; It is characterized in that: left and right sides keeper is fixed on the jaw place of caliper through the keeper axle, is provided with the keeper interlock on the keeper axle and controls the stopcock device of pneumatic control circuit " conducting " and " disconnection ".
Said stopcock device has stopcock, and the air inlet side of stopcock is connected with the gas bag of pneumatic control circuit, and the side of giving vent to anger of stopcock is connected with Pneumatic reversal valve, and the pore reversal valve is connected with two-way air valve, and two-way air valve is connected with rapid escape valve, and rapid escape valve is connected with air clutch.
Stopcock comprises the stopcock body that is placed in keeper axle upper end; Be connected to air inlet port and return-air mouth on the stopcock body; On the external cylindrical surface of keeper axle upper end and stopcock body mating part, be provided with an axial kidney slot; This kidney slot when the keeper closure state with the stopcock body on air inlet port and return-air mouth communicate, when being provided with on the keeper axle in the keeper opening with the stopcock body exhaust passage that last time, gas port communicated.
The utility model is rational in infrastructure; Keeper is through the gas control interlocking, and two keepers that make power tongs cut off the source of the gas that power tongs makes binding clip rotation or action automatically when opening; The operation air valve is ceased to be in force automatically; Guarantee that power tongs opens under the situation at a double-open keeper or a side door bolt, the power tongs binding clip can not rotate, and the occurrences in human life accident occurs after guaranteeing the safe in utilization of power tongs or preventing maloperation.After the whole closures of double-open keeper of power tongs, the power tongs binding clip could normal conduct.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the partial enlarged drawing of Fig. 1.
Fig. 4 is the fundamental diagram of the utility model.
The specific embodiment
A kind of power tongs with self-locking double-open keeper release mechanism; The pneumatic control circuit that comprises caliper 1, the action of control binding clip; Left and right sides keeper 2,3 is fixed on jaw 4 places of caliper through the keeper axle, is provided with the keeper interlock on the keeper axle 5 and controls the stopcock device of pneumatic control circuit " conducting " and " disconnection ".
Said stopcock device has stopcock (left and right sides stopcock 6,7 that comprises series connection); The air inlet side of stopcock is connected with the gas bag 8 of pneumatic control circuit; The side of giving vent to anger of stopcock is connected with Pneumatic reversal valve 9; Pore reversal valve 9 is connected with two-way air valve 10, and two-way air valve is connected with rapid escape valve 11, and rapid escape valve is connected with air clutch 12.
Stopcock comprises the stopcock body 13 that is placed in keeper axle upper end; Be connected to air inlet port 14 and return-air mouth 15 on the stopcock body; On the external cylindrical surface of keeper axle upper end and stopcock body mating part, be provided with an axial kidney slot; This kidney slot when the keeper closure state with the stopcock body on air inlet port and return-air mouth communicate, when being provided with on the keeper axle in the keeper opening with the stopcock body exhaust passage that last time, gas port communicated.
The course of work of the utility model is:
Open the door: when left and right sides keeper is in opening, air inlet port over against keeper shaft position atresia, i.e. air inlet is closed; The return-air mouth over against keeper shaft position place porose, and communicate, when promptly left and right sides keeper or one of them are opened with the exhaust passage; The control gas circuit is obstructed, and Pneumatic reversal valve is failure to actuate, and the gas circuit of two-way air valve is an off-state with gas bag all the time; So two-way air valve lost efficacy, and because the effect of rapid escape valve, air clutch is in the state of " leaving " all the time; Make the binding clip of power tongs not have moment of torsion and rotating speed output, guarantee safety in the keeper opening of power tongs.
Closed: when the left and right door body of power tongs all is in closure state; Air inlet port and the return-air mouth grooved groove on the keeper axle on the left and right door stopcock, the conducting of control gas circuit promotes Pneumatic reversal valve and moves to the a1 position; The gas circuit of two-way air valve and gas bag are conducting state; Can operate two-way air valve this moment and realize " leaving " and " closing " of air clutch, make the binding clip output torque and the rotating speed of power tongs, guarantee that power tongs moves under the keeper state of the left and right sides.
During two positions opening and close of left and right sides keeper, equal opened and closed positions through the 19 locking keepers of the self-lock rod on the caliper of the left and right sides.
Among the figure: left and right door stopcock b2, b3 are the door opening, and a2, a3 are the door closure state.Also have air gauge 16 among the figure, transfer cylinder 17, clamp cylinder 18.
Claims (3)
1. power tongs with self-locking double-open keeper release mechanism; The pneumatic control circuit that comprises caliper, the action of control binding clip; It is characterized in that: left and right sides keeper is fixed on the jaw place of caliper through the keeper axle, is provided with the keeper interlock on the keeper axle and controls the stopcock device of pneumatic control circuit " conducting " and " disconnection ".
2. the power tongs with self-locking double-open keeper release mechanism according to claim 1; It is characterized in that: said stopcock device has stopcock; The air inlet side of stopcock is connected with the gas bag of pneumatic control circuit, and the side of giving vent to anger of stopcock is connected with Pneumatic reversal valve, and the pore reversal valve is connected with two-way air valve; Two-way air valve is connected with rapid escape valve, and rapid escape valve is connected with air clutch.
3. the power tongs with self-locking double-open keeper release mechanism according to claim 2; It is characterized in that: stopcock comprises the stopcock body that is placed in keeper axle upper end; Be connected to air inlet port and return-air mouth on the stopcock body; On the external cylindrical surface of keeper axle upper end and stopcock body mating part, be provided with an axial kidney slot; This kidney slot when the keeper closure state with the stopcock body on air inlet port and return-air mouth communicate, when being provided with on the keeper axle in the keeper opening with the stopcock body exhaust passage that last time, gas port communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203808360U CN202300249U (en) | 2011-10-10 | 2011-10-10 | Power tongs with self-locking double bolt safety mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203808360U CN202300249U (en) | 2011-10-10 | 2011-10-10 | Power tongs with self-locking double bolt safety mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202300249U true CN202300249U (en) | 2012-07-04 |
Family
ID=46369171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203808360U Expired - Lifetime CN202300249U (en) | 2011-10-10 | 2011-10-10 | Power tongs with self-locking double bolt safety mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202300249U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201429A (en) * | 2015-10-16 | 2015-12-30 | 江苏中石机械有限公司 | Power tongs for pneumatic safety door |
| CN112324368A (en) * | 2020-12-13 | 2021-02-05 | 盐城特达钻采设备有限公司 | An oil well power tong pneumatic interlocking device and its control method |
-
2011
- 2011-10-10 CN CN2011203808360U patent/CN202300249U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201429A (en) * | 2015-10-16 | 2015-12-30 | 江苏中石机械有限公司 | Power tongs for pneumatic safety door |
| CN112324368A (en) * | 2020-12-13 | 2021-02-05 | 盐城特达钻采设备有限公司 | An oil well power tong pneumatic interlocking device and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 226406 Jiangsu city of Nantong province Rudong County town of bencha Wei Hai Road No. 60 Patentee after: Jiangsu stone machinery Limited by Share Ltd Address before: 226406 Jiangsu city of Nantong province Rudong County town of bencha Wei Hai Road No. 60 Patentee before: Rushi Machinery Co., Ltd., Jiangsu |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |
|
| CX01 | Expiry of patent term |