CN112211575A - Pipe measuring device - Google Patents
Pipe measuring device Download PDFInfo
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- CN112211575A CN112211575A CN202010920286.0A CN202010920286A CN112211575A CN 112211575 A CN112211575 A CN 112211575A CN 202010920286 A CN202010920286 A CN 202010920286A CN 112211575 A CN112211575 A CN 112211575A
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- pipe
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- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 230000009471 action Effects 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 12
- 238000005553 drilling Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
- E21B19/15—Racking of rods in horizontal position; Handling between horizontal and vertical position
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a pipe measuring device, and belongs to the technical field of petroleum equipment. The invention comprises a support beam of the power catwalk, a first sensor, a second sensor, a driving mechanism and a pulley; the pulley is positioned above the supporting beam and is connected with the supporting beam in a sliding or rolling way, and the sliding direction of the pulley and the supporting beam is the axial direction of the supporting beam; the driving mechanism is fixedly arranged on the supporting beam and comprises a driving device and a transmission piece, and the transmission piece is connected with the pulley and can drive the pulley to move on the supporting beam under the action of the driving device; the first sensor is arranged at the front end of the support beam, and the first sensor, the second sensor and the control system of the driving device are electrically connected. The invention can automatically measure the length of the pipe extending out of the supporting beam and accurately control the length of the pipe extending out of the supporting beam, thereby reducing the labor cost and facilitating the automatic control of the power catwalk.
Description
Technical Field
The invention relates to a pipe measuring device, and belongs to the technical field of petroleum equipment.
Background
With the development of science and technology, in the technical field of petroleum equipment, a drilling machine configuration automatic machine tool system becomes a current development trend, and a power catwalk is a core device of the automatic machine tool system and is suitable for safely and quickly conveying various pipe rods (drill rods, drill collars, casing pipes and the like) and devices to a drilling platform or dismounting the pipe rods and the devices from the drilling platform in a drilling process. The conventional power catwalk is usually operated by an operator using a remote controller or an operation desk when transporting pipes, and the operator needs to measure the length of the pipe extending out of a pipe supporting beam of the power catwalk, which is not only inefficient but also requires a large amount of labor cost; in addition, under long-time work, an operator frequently measures the length of the pipe extending out of the pipe supporting beam of the power catwalk, so that the measurement precision is not high, the measurement is not accurate, careless mistakes are easily caused, certain potential safety hazards may exist in subsequent work, and meanwhile, the processing mode does not accord with the current development trend.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, when a conventional power catwalk conveys pipes, an operator needs to frequently measure the length of the pipe extending out of a pipe supporting beam of the power catwalk, so that the labor cost is high, and careless mistakes are easily caused, and provides a pipe measuring device.
In order to achieve the above purpose, the invention provides the following technical scheme:
the pipe measuring device comprises a support beam of the power catwalk, a first sensor, a second sensor, a driving mechanism and a pulley; the pulley is positioned above the supporting beam and is connected with the supporting beam in a sliding or rolling way, and the sliding direction of the pulley and the supporting beam is the axial direction of the supporting beam; the driving mechanism is fixedly arranged on the supporting beam and comprises a driving device and a transmission piece, and the transmission piece is connected with the pulley and can drive the pulley to move on the supporting beam under the action of the driving device; the first sensor is arranged at the front end of the support beam, and the first sensor, the second sensor and the control system of the driving device are electrically connected.
In the invention, after the pipe is placed on the supporting beam, the transmission part drives the pulley to slide or roll in the axial direction of the supporting beam under the action of the driving device, so as to push the pipe to move forwards; when the pipe tool moves to the front end of the support beam, the pipe tool is sensed by a first sensor positioned at the front end of the support beam, the first sensor transmits a sensing signal to a second sensor, and the second sensor uses the position where the sensing signal is sensed as a starting position of the pipe tool extending out of the support beam; at the moment, the transmission part continues to drive the pulley to push the pipe tool forward under the action of the driving device, the distance of the pipe tool which continues to move forward is detected through the second sensor, the distance detected by the second sensor is subtracted from the distance of the first sensor from the front end port of the supporting beam, and then the length of the pipe tool extending out of the power catwalk supporting beam can be obtained. Therefore, the invention can avoid the operator from frequently measuring the length of the pipe extending out of the pipe supporting beam of the power catwalk, thereby reducing the high labor cost; the length of the pipe extending out of the supporting beam can be automatically measured through the invention, so that the automatic control of the power catwalk is facilitated. Meanwhile, the first sensor, the second sensor and the control system of the driving device are electrically connected, so that when the length value of the pipe extending out of the supporting beam reaches the value set in the second sensor, the second sensor can send a signal to the control system of the driving device, and the driving device stops working, and the length of the pipe extending out of the supporting beam can be accurately controlled.
Further, the method comprises the following steps: the driving mechanism is fixedly arranged on the side face of the supporting beam, and further comprises a driving wheel and a driven wheel, the driving wheel and the driven wheel are respectively located at two different ends of the supporting beam, the driving wheel is fixedly connected with the output end of the driving device, and the driving wheel is connected with the driven wheel through a transmission piece. Through the structure, the driving mechanism has simple and reliable structure, so that the pulley can be stably driven to move on the supporting beam, and the driving mechanism is a preferred embodiment of the driving mechanism.
Further, the method comprises the following steps: the pulley is fixedly connected with the transmission piece. Through the structure, the transmission piece can more reliably drive the pulley to move on the supporting beam under the action of the driving device, and the pulley is a preferred embodiment of connection of the pulley and the transmission piece.
Further, the method comprises the following steps: the transmission part is a chain, so that the pulley is driven to move in a chain transmission mode, an accurate average transmission ratio can be obtained, the work is reliable, and the efficiency is high; and the transmission power is large, the overload capacity is strong, and the transmission part is a preferred embodiment of the transmission part.
Further, the method comprises the following steps: the transmission part is a belt, so that the pulley is driven to move in a belt transmission mode, the transmission is stable, the transmission structure is simple and reliable, and the transmission part is a preferred embodiment of the transmission part.
Further, the method comprises the following steps: the driving mechanism further comprises a grooved wheel, the grooved wheel is fixedly connected with the output end of the driving device, the driving part is a rope, one end of the driving part is wound on the grooved wheel, and the other end of the driving part is fixedly connected with the pulley, so that labor can be saved.
Further, the method comprises the following steps: the driving mechanism also comprises a gear which is fixed at the output end of the driving device; the transmission part is a rack, the rack is arranged along the axis direction of the supporting beam, the rack is fixedly arranged on the supporting beam, the driving device is fixedly connected with the pulley, and the gear and the rack are meshed with each other, so that quick and accurate transmission can be performed.
Further, the method comprises the following steps: the second sensor is fixedly arranged on the driving device. With the above structure, it is possible to make the structure of the present invention relatively simple and facilitate the second sensor to measure the moving distance of the pipe, which is a preferred embodiment of the second sensor position arrangement of the present invention.
Further, the method comprises the following steps: the upper top surface of the supporting beam is provided with a sliding chute for placing the pipe, and the distribution direction of the sliding chute is the axis direction of the supporting beam. Through the structure, the phenomenon that the pipe can roll randomly when being pushed by the pulley on the supporting beam can be prevented.
Further, the method comprises the following steps: the cross section of the sliding chute is in a V shape, so that the sliding chute is convenient to process and manufacture.
Compared with the prior art, the invention has the beneficial effects that:
1. the length of the pipe extending out of the supporting beam can be automatically measured, so that the power catwalk can be automatically controlled.
2. The number of operators can be reduced and the labor cost can be reduced.
3. The length of the pipe extending beyond the support beam can be precisely controlled.
Description of the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a longitudinal sectional view of the support beam.
Fig. 3 is a top view of the present invention.
FIG. 4 is a schematic view of the pipe extending beyond the front end of the support beam.
The labels in the figure are: 1-support beam, 2-first sensor, 3-second sensor, 4-drive mechanism, 41-drive device, 42-drive piece, 5-pulley, 6-chute, 7-pipe.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
As shown in fig. 1 and 4, the invention comprises a support beam 1 of the power catwalk, and further comprises a first sensor 2, a second sensor 3, a driving mechanism 4 and a pulley 5; the pulley 5 is located above the support beam 1 and connected with the support beam 1 in a sliding or rolling manner, and the sliding direction between the pulley 5 and the support beam 1 is the axial direction of the support beam 1. The driving mechanism 4 is fixedly arranged on the support beam 1 and comprises a driving device 41 and a transmission piece 42, the transmission piece 42 is connected with the pulley 5 and can drive the pulley 5 to move on the support beam 1 under the action of the driving device 41; the first sensor 2 is disposed at the front end of the support beam 1, and the first sensor 2, the second sensor 3, and the control system of the driving device 41 are electrically connected.
In the present invention, the front end of the support beam 1 is the end of the pipe 7 extending from the support beam 1, and in fig. 1, the front end of the support beam 1 is the left end of the illustrated position. The specific positions of the first sensor 2 and the second sensor 3 of the present invention are not limited, and in order to make the structure of the present invention relatively simple, the first sensor 2 may be located at the front end of the support beam 1, and the second sensor 3 may be located at the rear end of the support beam 1, as shown in fig. 1. The working principle of the invention is as follows: after the pipe 7 is placed on the supporting beam 1, the driving member 42 drives the pulley 5 to slide or roll in the axial direction of the supporting beam 1 under the action of the driving device 41, so as to push the pipe 7 to move forward; when the pipe 7 moves to the front end of the support beam 1, it is sensed by the first sensor 2 located at the front end of the support beam 1, and the first sensor 2 transmits the sensed signal to the second sensor 3, while the second sensor 3 takes the position where the sensed signal is sensed as the starting position where the pipe 7 is protruded from the support beam 1; at this time, the driving member 42 continues to drive the trolley 5 to push the pipe 7 forward under the action of the driving device 41, and simultaneously, the distance that the pipe 7 continues to move forward is detected by the second sensor 3, and the distance that the first sensor 2 is away from the front end port of the support beam 1 is subtracted from the distance detected by the second sensor 3, so that the length that the pipe 7 extends out of the power catwalk support beam 1 can be known. Therefore, the invention can avoid the operator from frequently measuring the length of the pipe 7 extending out of the pipe 7 support beam 1 of the power catwalk, thereby reducing the high labor cost; and the length of the pipe 7 extending out of the support beam 1 can be automatically measured through the invention, thereby facilitating the automatic control of the power catwalk. In addition, the first sensor 2, the second sensor 3 and the control system of the driving device 41 are electrically connected, so that when the length of the pipe 7 extending out of the supporting beam 1 reaches the value set in the second sensor 3, the second sensor 3 can send a signal to the control system of the driving device 41, and the driving device 41 stops working, so that the length of the pipe 7 extending out of the supporting beam 1 can be accurately controlled through the invention.
In the present embodiment, the specific structure of the first sensor 2 is not limited, and for convenience of implementation, the first sensor may be a proximity switch, a photoelectric switch, a travel switch, a laser distance measuring sensor, or other sensors as long as the first sensor can detect the pipe 7. The specific structure of the second sensor 3 is not limited, and the sensor may be an encoder, a displacement sensor, a laser ranging sensor, or other sensors as long as the movement distance of the pulley 5 can be detected.
In order to make the structure of the driving mechanism 4 simple and reliable and to smoothly drive the pulley 5 to move on the supporting beam 1, as shown in fig. 1, the driving mechanism 4 of the present invention is fixed on the side surface of the supporting beam 1, the driving mechanism 4 further includes a driving wheel and a driven wheel, the driving wheel and the driven wheel are respectively located at different two ends of the supporting beam 1, the driving wheel is fixedly connected with the output end of the driving device 41, and the driving wheel and the driven wheel are connected through a transmission member 42. In order to be able to reliably move the carriage 5 on the support beam 1 by means of the drive device 41 of the transmission element 42, the carriage 5 can be fixedly connected to the transmission element 42. In order to be able to obtain an exact average transmission ratio in the drive mechanism 4, the transmission element 42 according to the invention can be selected as a chain. In order to make the driving mechanism 4 smoothly drive the pulley to move, the transmission member 42 can be selected to be a belt, and the transmission structure can be simple and reliable.
Of course, the driving mechanism 4 of the present invention may further include a sheave, and the sheave is fixedly connected to the output end of the driving device 41; the transmission member 42 is a rope, one end of the transmission member 42 is wound on the sheave, and the other end is fixedly connected with the pulley 5. Specifically, the rope can be a steel wire rope, so that labor can be saved in the transmission process through rope transmission.
The driving mechanism 4 of the present invention may further include a gear fixed at the output end of the driving device 41; the transmission part 42 is a rack, the rack is arranged along the axial direction of the support beam 1, the rack is fixedly arranged on the support beam 1, the driving device 41 is fixedly connected with the pulley 5, and the gear and the rack are meshed with each other, so that rapid and accurate transmission can be performed through the meshing of the gear and the rack. Further, in order to make the structure of the present invention relatively simple and facilitate the second sensor to measure the moving distance of the pipe, the second sensor may be fixed to the driving device 41.
In addition, in the present invention, the pulley 5 may also be fixed on the chain, so that when the driving device 41 drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the chain, and further the pulley 5 can be driven to push the pipe 7 on the supporting beam 1 to move forward. Further, when the second sensor 3 receives the signal from the first sensor 2, the second sensor 3 starts to detect the distance of the pipe 7 moving on the support beam 1, in this embodiment, the second sensor 3 can detect the number of rotations of the output end of the driving device 41, and calculate the sliding distance of the pulley 5 on the support beam 1 according to the design parameters of the driving wheel, the driven wheel and the chain, so as to obtain the moving distance of the pipe 7 on the support beam 1, and subtract the distance between the first sensor 2 and the front port of the support beam 1 from the moving distance of the pipe 7 on the support beam 1, so as to obtain the length of the pipe 7 extending out of the support beam 1. When the length of the pipe 7 extending out of the support beam 1 reaches a set value, the second sensor 3 sends a signal to the control system of the driving device 41, and the control system controls the driving device 41 to stop working, so that the length of the pipe 7 extending out of the support beam 1 can be accurately controlled.
In the present invention, in order to facilitate the placement of the pipe 7 on the support beam 1 and prevent the pipe 7 from rolling freely on the support beam 1, the present invention is provided with the chute 6 for placing the pipe 7 on the upper top surface of the support beam 1, the distribution direction of the chute 6 is the axial direction of the support beam 1, and in order to facilitate the processing and manufacturing, the cross-sectional shape of the chute 6 can be set to be "V" shape as shown in fig. 2.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Pipe measuring device, including a support beam (1) of power catwalk, its characterized in that: the device also comprises a first sensor (2), a second sensor (3), a driving mechanism (4) and a pulley (5);
the pulley (5) is positioned above the supporting beam (1) and is connected with the supporting beam (1) in a sliding or rolling way, and the sliding direction of the pulley and the supporting beam is the axial direction of the supporting beam (1);
the driving mechanism (4) is fixedly arranged on the supporting beam (1) and comprises a driving device (41) and a transmission piece (42), the transmission piece (42) is connected with the pulley (5), and the pulley (5) can be driven to move on the supporting beam (1) under the action of the driving device (41);
the first sensor (2) is arranged at the front end of the support beam (1), and the first sensor (2), the second sensor (3) and a control system of the driving device (41) are electrically connected.
2. The tube measuring device of claim 1, wherein: the driving mechanism (4) is fixedly arranged on the side face of the supporting beam (1), the driving mechanism (4) further comprises a driving wheel and a driven wheel, the driving wheel and the driven wheel are respectively located at two different ends of the supporting beam (1), the driving wheel is fixedly connected with the output end of the driving device (41), and the driving wheel is connected with the driven wheel through a transmission piece (42).
3. The tube measuring device of claim 2, wherein: the pulley (5) is fixedly connected with the transmission piece (42).
4. A tube measuring device as claimed in claim 2 or 3, characterized in that: the transmission member (42) is a chain.
5. A tube measuring device as claimed in claim 2 or 3, characterized in that: the transmission member (42) is a belt.
6. The tube measuring device of claim 1, wherein: the driving mechanism (4) further comprises a grooved wheel, the grooved wheel is fixedly connected with the output end of the driving device (41), the transmission piece (42) is a rope, one end of the transmission piece (42) is wound on the grooved wheel, and the other end of the transmission piece is fixedly connected with the pulley (5).
7. The tube measuring device of claim 1, wherein: the driving mechanism (4) also comprises a gear which is fixed at the output end of the driving device (41); the transmission piece (42) is a rack, the rack is arranged along the axial direction of the support beam (1), the rack is fixedly arranged on the support beam (1), the driving device (41) is fixedly connected with the pulley (5), and the gear is meshed with the rack.
8. The tube measuring device of claim 7, wherein: the second sensor (3) is fixedly arranged on the driving device (41).
9. The pipe measurement device of any of claims 1, 2, 3, 6, 7, or 8, wherein: the upper top surface of the supporting beam (1) is provided with a sliding chute (6) for placing a pipe (7), and the distribution direction of the sliding chute (6) is the axial direction of the supporting beam (1).
10. The tube measuring device of claim 9, wherein: the cross section of the sliding chute (6) is V-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920286.0A CN112211575A (en) | 2020-09-04 | 2020-09-04 | Pipe measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920286.0A CN112211575A (en) | 2020-09-04 | 2020-09-04 | Pipe measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112211575A true CN112211575A (en) | 2021-01-12 |
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ID=74049272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010920286.0A Pending CN112211575A (en) | 2020-09-04 | 2020-09-04 | Pipe measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112211575A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983307A (en) * | 2021-02-19 | 2021-06-18 | 四川宏华石油设备有限公司 | Drilling tool conveying equipment and drilling tool conveying method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777136A (en) * | 2012-06-06 | 2012-11-14 | 宝鸡石油机械有限责任公司 | Power catwalk for lifting workover rig |
| CN102787813A (en) * | 2012-08-18 | 2012-11-21 | 吉林大学 | Intelligent full-hydraulic power catwalk |
| CN102926685A (en) * | 2012-11-23 | 2013-02-13 | 吉林大学 | All-hydraulic automatic drilling tool conveying device for deep-well drilling rig |
| CN202767911U (en) * | 2012-08-18 | 2013-03-06 | 吉林大学 | Fully hydraulic intelligent type power catwalk |
| CN103790525A (en) * | 2014-02-28 | 2014-05-14 | 宝鸡石油机械有限责任公司 | Oil cylinder lifting type drilling rig power catwalk |
| CN104563919A (en) * | 2014-12-25 | 2015-04-29 | 宝鸡石油机械有限责任公司 | Power catwalk pipe column measuring and controlling device and power catwalk pipe column measuring and controlling method |
| US20170159379A1 (en) * | 2014-09-24 | 2017-06-08 | The Charles Machine Works, Inc. | Pipe Storage Box |
| CN108952600A (en) * | 2018-08-28 | 2018-12-07 | 荆州市明德科技有限公司 | It is a kind of to survey long oil pipe conveying device automatically |
-
2020
- 2020-09-04 CN CN202010920286.0A patent/CN112211575A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777136A (en) * | 2012-06-06 | 2012-11-14 | 宝鸡石油机械有限责任公司 | Power catwalk for lifting workover rig |
| CN102787813A (en) * | 2012-08-18 | 2012-11-21 | 吉林大学 | Intelligent full-hydraulic power catwalk |
| CN202767911U (en) * | 2012-08-18 | 2013-03-06 | 吉林大学 | Fully hydraulic intelligent type power catwalk |
| CN102926685A (en) * | 2012-11-23 | 2013-02-13 | 吉林大学 | All-hydraulic automatic drilling tool conveying device for deep-well drilling rig |
| CN103790525A (en) * | 2014-02-28 | 2014-05-14 | 宝鸡石油机械有限责任公司 | Oil cylinder lifting type drilling rig power catwalk |
| US20170159379A1 (en) * | 2014-09-24 | 2017-06-08 | The Charles Machine Works, Inc. | Pipe Storage Box |
| CN104563919A (en) * | 2014-12-25 | 2015-04-29 | 宝鸡石油机械有限责任公司 | Power catwalk pipe column measuring and controlling device and power catwalk pipe column measuring and controlling method |
| CN108952600A (en) * | 2018-08-28 | 2018-12-07 | 荆州市明德科技有限公司 | It is a kind of to survey long oil pipe conveying device automatically |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983307A (en) * | 2021-02-19 | 2021-06-18 | 四川宏华石油设备有限公司 | Drilling tool conveying equipment and drilling tool conveying method thereof |
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Application publication date: 20210112 |