CN203488125U - Gating safety protection device of open-type hydraulic power tongs - Google Patents
Gating safety protection device of open-type hydraulic power tongs Download PDFInfo
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- CN203488125U CN203488125U CN201320611725.5U CN201320611725U CN203488125U CN 203488125 U CN203488125 U CN 203488125U CN 201320611725 U CN201320611725 U CN 201320611725U CN 203488125 U CN203488125 U CN 203488125U
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- Prior art keywords
- gate valve
- gating
- safety
- open
- safety door
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Abstract
A gating safety protection device of open-type hydraulic power tongs comprises a gating valve, a soft shaft, a carrying frame, supports, pin shafts, a safety door, a power tong body and a hydraulic motor, wherein the safety door is installed at an opening of the tong body of the power tongs, an oil port of the gating valve is communicated with an oil inlet and an oil outlet of the hydraulic motor, one ends of soft shaft connectors at the two ends of the soft shaft are hinged to the safety door through the pin shafts, and the other ends of the soft shaft connectors are fixedly connected with the end of a valve element of the gating valve. One ends of hose connectors at the two ends fix the tong body of the power tongs through the supports, and the other ends of the hose connectors are fixed to the carrying frame. The carrying frame and the valve body of the gating valve are fastened into a whole. The gating safety protection device of the open-type hydraulic power tongs is simpler and more reliable. Once the safety door is opened, the soft shaft drives the gating valve to carrying out unloading, the safety performance of the open-type hydraulic power tongs is obviously improved, and personal safety of an operator is protected more reliably.
Description
Technical field
The utility model relates to the safe automatic protection device of the safety device, particularly open hydraulic power tongs of oil drilling and well workover use Power Tong, belongs to oilfield machinery security protection technology field.
Background technology
Due to security needs, oil field tubulars all requires to configure safety device with open power-spider.Open power-spider has passed through repeatedly and has improved at present, existing multiple safeguard protection form.In the utility model patent of China Patent No. 200920007413.7 " a kind of automatic safety door protection device for open hydraulic power tongs " by name, disclose a kind of: on safety door or Power Tong caliper, be provided with post rod type two position three way directional control valve; Between hand-operated direction valve and hydraulic motor, be provided with dual hydraulic control one-way valve; The safety protection structure that post rod type two position three way directional control valve commutates is controlled in opening or closing of safety door.There is following problem in this structure: 1, between hand-operated direction valve and hydraulic motor, being provided with dual hydraulic control one-way valve is stop valve, and it blocks oil circuit in actual use, as long as door is not shut, hydraulic system is all the time in the state of building the pressure; 2, post rod type two position three way directional control valve is arranged on safety door or Power Tong caliper, easily collided, and it is connected with dual hydraulic control one-way valve by oil pipe, and pipeline is long easily to go wrong.And for example in the utility model patent of China Patent No. 200920146424.3 " a kind of opened safety door device of hydraulic power tongs " by name, disclose a kind of: connecting rod one end and door main body are hinged, the other end is connected with the eccentric shaft of remote-controlled valve, eccentric shaft, armshaft, Control Shaft is fixed on one, there is a notch alignment spool at Control Shaft middle part, when door pulls open, door main body can drive Control Shaft to rotate by connecting rod, spool is opened, remote control circuit is switched on, when door is closed, door main body can drive Control Shaft to rotate by connecting rod, spool return, the cut safety protection structure of remote control circuit.There is equally following point: 1, by connecting rod, connect safety door and remote-controlled valve, connecting rod easily breaks; 2, Control Shaft rotates, and is rotatory sealing, and sealing effectiveness is bad, and fault rate is high.Therefore, with the security protection technology of open power-spider, also be there is to necessity of improving raising in oil field tubulars.
Summary of the invention
For the deficiency in open power-spider security protection technology for existing oil field tubulars, the utility model provides a kind of open hydraulic power tongs door controlled safety protective device.
The technical solution of the utility model is: a kind of open hydraulic power tongs door controlled safety protective device; comprise gate valve, flexible axle, bracket, support, bearing pin, safety door, Power Tong caliper, hydraulic motor; safety door is arranged on the opening part of Power Tong caliper; described flexible axle is comprised of Bowden cable, flexible pipe, flexible shaft end and hose coupling, it is characterized in that:
Described gate valve is comprised of gate valve body and gate valve core, and the entering of its hydraulic fluid port and hydraulic motor, oil return opening communicate;
Flexible shaft end one end, two ends in described flexible axle is hinged on safety door by bearing pin, and one end is fixedly connected on gate valve core end, and hose coupling one end, two ends is fixed on Power Tong caliper by support, and one end is fixed on bracket;
Fastening and the one of described bracket and gate valve body.
When safety door is closed, the Bowden cable in flexible axle pulls the reach of gate valve core, and now on gate valve body, oil inlet P and hydraulic fluid port A communicate, and hydraulic fluid port A communicates with hydraulic fluid port C or D on hydraulic motor, forms hydraulic circuit, and hydraulic system is normally worked; When safety door is opened, the Bowden cable in flexible axle promotes to move after gate valve core, and now on gate valve body, oil inlet P and oil return opening O communicate, the direct oil sump tank of hydraulic oil, and hydraulic system is in unloading condition, and hydraulic power tongs can not run well.
The beneficial effects of the utility model are that the safe gating device of powered splitting pliers is more simple, reliable; safety door one is opened; flexible axle just drives the off-load of gate valve, and the security performance of open hydraulic power tongs is significantly improved, and protects more reliably operator's personal safety.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model.
In Fig. 1: 1. gate valve; 101. gate valve bodies; 102. gate valve cores; 2. bracket; 3. flexible axle; 301. Bowden cable; 302. flexible pipe; 303. flexible shaft end; 304. hose coupling; 4. support; 5. bearing pin; 6. safety door; 7. Power Tong caliper; 8. hydraulic motor.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figure 1, a kind of open hydraulic power tongs door controlled safety protective device, comprises gate valve 1, flexible axle 3, bracket 2, support 4, bearing pin 5, safety door 6, Power Tong caliper 7, hydraulic motor 8, and safety door 6 is arranged on the opening part of Power Tong caliper 7; Flexible axle 3 is comprised of Bowden cable 301, flexible pipe 302, flexible shaft end 303 and hose coupling 304; Gate valve 1 is comprised of gate valve body 101 and gate valve core 102, and the entering of its hydraulic fluid port and hydraulic motor 8, oil return opening communicate; Two ends flexible shaft end 303 one end in flexible axle 3 are hinged on safety door 6 by bearing pin 5, and one end is fixedly connected on gate valve core 102 ends; Hose coupling 304 one end in two ends are fixed on Power Tong caliper 7 by support 4, and one end is fixed on bracket 2; Bracket 2 is fastening and one with gate valve body 101.
When safety door 6 is closed, Bowden cable 301 in flexible axle 3 pulls 102 reaches of gate valve core, and now on gate valve body 101, oil inlet P and hydraulic fluid port A communicate, and hydraulic fluid port A communicates with hydraulic fluid port C or D on hydraulic motor 8, form hydraulic circuit, hydraulic system is normally worked; When safety door 6 is opened, Bowden cable 301 in flexible axle 3 promotes to move after gate valve core 102, and now on gate valve body 101, oil inlet P and oil return opening O communicate, the direct oil sump tank of hydraulic oil, hydraulic system is in unloading condition, and hydraulic power tongs can not run well.
Claims (1)
1. an open hydraulic power tongs door controlled safety protective device; comprise gate valve, flexible axle, bracket, support, bearing pin, safety door, Power Tong caliper, hydraulic motor; safety door is arranged on the opening part of Power Tong caliper; described flexible axle is comprised of Bowden cable, flexible pipe, flexible shaft end and hose coupling, it is characterized in that:
Described gate valve is comprised of gate valve body and gate valve core, and the entering of its hydraulic fluid port and hydraulic motor, oil return opening communicate;
Flexible shaft end one end, two ends in described flexible axle is hinged on safety door by bearing pin, and one end is fixedly connected on gate valve core end; Hose coupling one end, two ends is fixed on Power Tong caliper by support, and one end is fixed on bracket;
Fastening and the one of described bracket and gate valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320611725.5U CN203488125U (en) | 2013-10-04 | 2013-10-04 | Gating safety protection device of open-type hydraulic power tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320611725.5U CN203488125U (en) | 2013-10-04 | 2013-10-04 | Gating safety protection device of open-type hydraulic power tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203488125U true CN203488125U (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320611725.5U Expired - Lifetime CN203488125U (en) | 2013-10-04 | 2013-10-04 | Gating safety protection device of open-type hydraulic power tongs |
Country Status (1)
| Country | Link |
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| CN (1) | CN203488125U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422023A (en) * | 2015-12-08 | 2016-03-23 | 盐城特达钻采设备有限公司 | Opening type hydraulic power tongs capable of being remotely and hydraulically controlled |
| US20170030154A1 (en) * | 2015-07-30 | 2017-02-02 | Pentacle Oilfield Supply Inc. | Double-door gating safety protection device for a hydraulic power tong |
| CN110206501A (en) * | 2019-06-05 | 2019-09-06 | 东营市元捷石油机械有限公司 | Hydraulic locking apparatus |
-
2013
- 2013-10-04 CN CN201320611725.5U patent/CN203488125U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170030154A1 (en) * | 2015-07-30 | 2017-02-02 | Pentacle Oilfield Supply Inc. | Double-door gating safety protection device for a hydraulic power tong |
| CN105422023A (en) * | 2015-12-08 | 2016-03-23 | 盐城特达钻采设备有限公司 | Opening type hydraulic power tongs capable of being remotely and hydraulically controlled |
| CN110206501A (en) * | 2019-06-05 | 2019-09-06 | 东营市元捷石油机械有限公司 | Hydraulic locking apparatus |
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