CN210452529U

CN210452529U - Special pliers for oil pipe

Info

Publication number: CN210452529U
Application number: CN201921037269.1U
Authority: CN
Inventors: 于秀娟; 唐煜权
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-05-05
Anticipated expiration: 2029-07-03

Abstract

The utility model relates to the field of tools for fastening, connecting, disassembling or clamping, and discloses a pair of special pliers for an oil pipe, which comprises a pliers handle, a pliers body and a pliers head; the clamp body comprises an upper clamp body and a lower clamp body which are hinged, and the clamp handle is fixedly connected with the upper clamp body; the upper end of the upper clamp body is provided with an upper lug plate and a locking structure, and the lower end of the lower clamp body is provided with a lower lug plate; the clamp head is of an annular anchor chain structure and comprises at least two chain rings, namely a clamping driving arm chain ring and a clamping transmission arm chain ring, wherein one end of the clamping driving arm chain ring is hung on the lower ear plate, and the other end of the clamping driving arm chain ring is buckled with the clamping transmission arm chain ring; when the special pliers for the oil pipe are in a clamping state, the other end of the chain ring of the clamping transmission arm is hung on the upper lug plate and fixed through the locking structure. The special pliers for the oil pipe of the utility model can work continuously without taking down the pipe pliers when in use, and has high working efficiency; the clamping diameter can be changed by replacing the clamping tooth block, and the application range is wide; the magnetic debris collector is provided with a plurality of magnetic debris collectors, so that the magnetic debris can be prevented from falling into an oil well.

Description

Special pliers for oil pipe

Technical Field

The utility model relates to an instrument field that is used for fastening, connects, dismantles or centre gripping particularly, relates to a special pincers of oil pipe.

Background

At present, the loading and unloading of oil pipes are usually completed by adopting special oil pipe tongs, and the following problems are found in the use process of the existing special oil pipe tongs in practical application: (1) when in use, the pipe wrench is required to be taken down and clamped again every time force is applied, so that the pipe wrench cannot be used continuously, is inconvenient to use and has low efficiency; (2) the friction between the tubing tong and the tubing causes the wear of the tubing to generate debris which can fall into the oil well and damage the oil pump in the oil well; (3) when in use, pipe tongs with different specifications are frequently replaced as required according to different sizes of pipelines, so that the operation is inconvenient; (4) most of the existing oil pipe tongs are connected by rivets, so that the existing oil pipe tongs are heavy and inconvenient to use.

Therefore, the special oil pipe pliers are convenient to use, simple to operate, capable of meeting the loading and unloading requirements of different pipelines and capable of effectively eliminating damage to an oil pump caused by magnetic debris in loading and unloading.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a can adapt to not unidimensional pipeline and effectively eliminate the clastic special pincers of oil pipe of loading and unloading in-process production to above-mentioned problem.

In order to realize the purpose, the special pliers for the oil pipe comprise a pliers handle, a pliers body and a pliers head;

the forceps body comprises an upper forceps body and a lower forceps body, the upper forceps body is hinged with the lower forceps body, and the forceps handle is fixedly connected with the upper forceps body;

the upper end of the upper clamp body is provided with an upper lug plate and a locking structure, the right side of the upper lug plate is provided with a rectangular groove, the locking structure is riveted in the rectangular groove, and the lower end of the lower clamp body is provided with a lower lug plate;

the clamp head is of an annular anchor chain structure and comprises at least two chain rings, the two chain rings are respectively a clamping driving arm chain ring and a clamping transmission arm chain ring, one end of the clamping driving arm chain ring is hung on the lower ear plate, and the other end of the clamping driving arm chain ring is buckled with the clamping transmission arm chain ring; when the oil pipe is clamped and the special pliers for the oil pipe are in a clamping state, the other end of the chain ring of the clamping transmission arm is hung on the upper lug plate and fixed through the locking structure;

the oil pipe clamping device is characterized by further comprising at least three clamping blocks, wherein one clamping block is arranged at the end part of the lower clamp body, the other clamping block is arranged on the inner side of the clamping driving arm chain ring, the other clamping block is arranged on the inner side of the clamping transmission arm chain ring, and the clamping blocks are arc-shaped so as to be attached to an oil pipe;

a magnetic debris collector is arranged on one side of each clamping block and is used for collecting debris generated in use and preventing the debris from falling into an oil well;

furthermore, the locking structure comprises a ratchet wheel, a pawl spring and a ratchet wheel spring;

two mounting holes are formed in the rectangular groove, and the pawl spring and the ratchet spring are respectively fixed in the mounting holes; the heights of the pawl spring and the ratchet spring in the free state are higher than the depth of the mounting hole;

the ratchet wheel and the pawl are positioned between the pawl spring and the ratchet wheel spring and are hinged with the upper pliers body; the pawl comprises a left pressing plate and a locking block, a groove is formed in the inner side of the locking block, hook teeth are formed in the outer side of the locking block, and the pawl spring can be pressed downwards by the left pressing plate; the ratchet comprises a right pressing plate and a ratchet, and when the ratchet abuts against the hook teeth, the right pressing plate is positioned above the ratchet spring;

furthermore, a groove is formed in one side, close to the clamp handle, of the upper lug plate, a groove is formed in one side, close to the clamp handle, of the lower lug plate, a stop pin is arranged below the lower lug plate, and a clamping driving arm chain ring is clamped in the groove and fixed through the stop pin;

furthermore, when the special oil pipe pliers are in a clamping state, one end of a chain ring of the clamping transmission arm is buckled on the upper lug plate, the left pressing plate is pressed down, the end part of the chain ring of the clamping transmission arm is positioned in the grooves of the upper lug plate and the locking block, the pawl spring is in a compressed state, the pawl tooth presses the ratchet, the right pressing plate is positioned above the ratchet spring, and the ratchet spring is in a free state;

furthermore, the pawl spring and the ratchet spring are sleeved with the split elastic pin;

furthermore, a clamping arm chain ring is arranged between the clamping driving arm chain ring and the clamping transmission arm chain ring, and two ends of the clamping arm chain ring are respectively connected with the clamping driving arm chain ring and the clamping transmission arm chain ring in a buckling manner;

furthermore, a locking handle is arranged on the chain ring of the clamping transmission arm.

Furthermore, the inner wall of the clamping block is serrated so as to increase the friction force between the clamping block and the oil pipe.

The utility model discloses following beneficial effect has:

(1) the special pliers for the oil pipe of the utility model can continuously work without taking down the pipe pliers when in use, and has high working efficiency;

(2) the special pliers for the oil pipe of the utility model are connected by the anchor chain, do not need rivets, eliminate the shearing force to the rivets, have light weight, large torque and convenient use;

(3) the special clamp for the oil pipe can change the clamping diameter by replacing the clamping block, and meanwhile, the teeth of the clamping block can be acute angle, obtuse angle, fillet and plane, and can work by utilizing the friction force of the clamping block, can be used for clamping other workpieces which are afraid of damaging the surface, and has wide application range;

(4) the utility model discloses a special pincers of oil pipe have a plurality of magnetic debris collectors, can collect the magnetic debris that produces in the loading and unloading work, avoid magnetic debris to fall in the oil well to protect the oil pump in the oil well.

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is an exploded view of the clamp body;

FIG. 3 is a schematic structural view of the latch structure;

FIG. 4 is a view of the locking state of the tubing tong;

fig. 5 is a schematic structural diagram of embodiment 2 of the present invention;

wherein the figures include the following reference numerals: 1. a forceps handle; 2. a clamp body; 2-1, an upper clamp body; 2-2, a lower clamp body; 3. an upper ear plate; 4. a locking structure; 5. a lower ear plate; 6. a stop pin; 7. clamping a driving arm chain ring; 8. clamping the drive arm chain ring; 9. a clamping block; 10. a magnetic debris collector; 11. a ratchet wheel; 12. a pawl; 13. a pawl spring; 14. a ratchet spring; 15. a split spring pin; 16. a left press plate; 17. a locking block; 18. hooking teeth; 19. a right pressure plate; 20. a ratchet; 21. locking the handle; 22. the arm links are clamped.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In the present invention, in the case where no explanation is made to the contrary, in the present specification, "upper", "lower", "front", "rear", "left", "right", and the like are used only for indicating the relative positional relationship between the relevant portions, and are not limited to the absolute positions of the relevant portions.

Example 1

As shown in fig. 1-2, the special oil pipe pliers of the present invention comprise a pliers handle 1, a pliers body 2 and a pliers head; the clamp body comprises an upper clamp body 2-1 and a lower clamp body 2-2, the upper clamp body is hinged with the lower clamp body, a clamp handle is fixedly connected with the upper clamp body, an upper lug plate 3 and a locking structure 4 are arranged at the upper end of the clamp body, a rectangular groove is arranged at the right side of the upper lug plate, the locking structure is riveted in the rectangular groove, and a lower lug plate 5 is arranged at the lower end of the clamp body; the side of the upper ear plate and the side of the lower ear plate close to the forceps handle are both provided with grooves, and a stop pin 6 is arranged below the lower ear plate.

The upper clamp body and the lower clamp body both comprise two ends, one end of the upper clamp body and one end of the lower clamp body are mutually abutted under the non-use state, and the included angle between the other two ends is 1-30 degrees, namely the rotation range between the lower clamp body and the upper clamp body is 1-30 degrees.

The clamp head is of an annular anchor chain structure and comprises two chain rings, the two chain rings are respectively a clamping driving arm chain ring 7 and a clamping transmission arm chain ring 8, one end of the clamping driving arm chain ring is clamped in the groove of the lower ear plate and is fixed through a stop pin, and the other end of the clamping driving arm chain ring is buckled and connected with one end of the clamping transmission arm chain ring; the clamping transmission arm chain ring determines the opening and closing of the special oil pipe clamp, and when the special oil pipe clamp needs to be clamped, the other end of the clamping transmission arm chain ring is clamped in the groove of the upper lug plate and fixed through the locking structure.

The region that the pincers body and binding clip enclose is exactly the oil pipe centre gripping district, presss from both sides tight piece 9 detachably and installs in oil pipe centre gripping district inboard, presss from both sides tight piece and is three at least, and one of them sets up in the pincers body tip, and one sets up in pressing from both sides tight driving arm chain ring inboard, presss from both sides tight piece and is the arc to laminate with oil pipe, the inner wall that presss from both sides tight piece is the cockscomb structure, with the frictional force between increase. According to the different oil pipe diameters, different clamping blocks can be replaced. The teeth of the clamping block can be acute angle, obtuse angle, round angle or plane, and work by utilizing the friction force of the clamping block, so that the generation of fragments is reduced to the greatest extent, and even the fragments are not generated, thereby protecting the oil pump.

In order to completely avoid the debris from falling into the well, a magnetic debris collector 10 is also provided on one side of each gripping block for collecting tubing debris that may be generated during operation. Because the oil pipe debris are all iron, so the magnetic debris collector only needs to adopt the magnet.

As shown in fig. 3, the locking structure comprises a ratchet 11, a pawl 12, a pawl spring 13 and a ratchet spring 14, two mounting holes are arranged in a rectangular groove on the right side of the upper lug plate, the pawl spring and the ratchet spring are respectively fixed in the mounting holes, and the pawl spring and the ratchet spring are both sleeved with an open elastic pin 15; the heights of the pawl spring and the ratchet spring in the free state are higher than the depth of the mounting hole; the ratchet wheel and the pawl are positioned between the pawl spring and the ratchet wheel spring and are hinged with the upper pliers body.

The pawl comprises a left pressure plate 16 and a locking block 17, the inner side of the locking block is provided with a groove, the outer side of the locking block is provided with a hook tooth 18, and the ratchet comprises a right pressure plate 19 and a ratchet 20. Under the natural state, the left pressing plate presses on the pawl spring, and the locking block inclines rightwards to press the ratchet under the elastic action of the pawl spring, so that the right pressing plate presses the ratchet spring, and the ratchet spring is in a compressed state.

When the oil pipe needs to be clamped, the clamping transmission arm chain ring is clamped into the groove of the upper lug plate, the left pressing plate is pressed down, the locking block rotates leftwards, the ratchet is not pressed any more, the ratchet spring bounces, the right pressing plate is jacked up to enable the ratchet to jack the hook teeth on the outer side of the locking block, and the clamping transmission arm chain ring is clamped into the groove of the locking block and the groove of the upper lug plate and is locked by the locking structure. As shown in fig. 4.

When the oil pipe needs to be loosened, the locking block is manually pushed in the direction of the upper lug plate, the hook teeth are separated from the ratchet teeth, the ratchet teeth are pressed down by the right pressing plate under the action of gravity, the ratchet teeth are tilted, then the locking block is loosened, the left pressing plate is jacked up by the pawl spring, the locking block rotates rightwards, the locking structure fails, and the chain ring of the clamping transmission arm can be unlocked by taking down the upper lug plate.

For ease of operation, a locking handle 21 is also provided on the clamping actuator arm chain ring.

The utility model discloses working process and principle as follows: at first according to the special pincers of suitable oil pipe of oil pipe diameter selection and press from both sides tight piece, will press from both sides tight piece installation and target in place, then will the utility model discloses a special pincers cover of oil pipe is on oil pipe, grabs the locking handle and will press from both sides tight driving arm chain ring and hang on the otic placode, and locking structure automatic locking will press from both sides tight driving arm chain ring and fix.

When the oil pipe clamping device is used, the clamp handle is pressed downwards, the upper clamp body rotates to drive the clamping transmission arm chain ring and the clamping driving arm chain ring to move, and an oil pipe is clamped; and continuously pressing down the clamp handle with force to drive the clamp head, the oil pipe and the lower clamp body to synchronously rotate, lifting up the clamp handle after the clamp handle rotates to the limit position to enable the clamp body and the clamp head to return to the initial position, and then pressing down the clamp handle to repeatedly drive the oil pipe to rotate until the oil pipe is mounted or dismounted. In the use process, the special clamp for the oil pipe does not need to be taken down, and the oil pipe can continuously and quickly work until the work is finally finished.

Example 2

As shown in fig. 5, the difference between this embodiment and embodiment 1 is that in this embodiment, the binding clip includes three chain rings, a clamping arm chain ring 22 is further disposed between the clamping driving arm chain ring and the clamping driving arm chain ring, and two ends of the clamping arm chain ring are respectively buckled and connected with the clamping driving arm chain ring and the clamping driving arm chain ring. The rest is the same as in example 1.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pair of special pliers for an oil pipe comprises a pliers handle (1), a pliers body (2) and a pliers head, and is characterized in that,

the forceps body comprises an upper forceps body (2-1) and a lower forceps body (2-2), the upper forceps body (2-1) is hinged with the lower forceps body (2-2), and a forceps handle (1) is fixedly connected with the upper forceps body (2-1);

the upper end of the upper plier body (2-1) is provided with an upper lug plate (3) and a locking structure (4), and the lower end of the lower plier body (2-2) is provided with a lower lug plate (5);

the clamp head is of an annular anchor chain structure and comprises at least two chain rings, the two chain rings are respectively a clamping driving arm chain ring (7) and a clamping transmission arm chain ring (8), one end of the clamping driving arm chain ring (7) is hung on the lower ear plate (5), and the other end of the clamping driving arm chain ring is buckled with the clamping transmission arm chain ring (8); when the oil pipe is clamped and the special pliers for the oil pipe are in a clamping state, the other end of the clamping transmission arm chain ring (8) is hung on the upper lug plate (3) and fixed through the locking structure (4).

2. The oil pipe special clamp according to claim 1,

the oil pipe clamp is characterized by further comprising at least three clamping blocks (9), wherein one clamping block is arranged at the end part of the lower clamp body (2-2), the other clamping block is arranged on the inner side of the clamping driving arm chain ring (7), the other clamping block is arranged on the inner side of the clamping transmission arm chain ring (8), and the clamping blocks (9) are arc-shaped and are attached to an oil pipe conveniently.

3. Tubing-specific tong according to claim 2, characterized in that each gripping block (9) is provided on one side with a magnetic debris collector (10) for collecting debris generated in use.

4. The special tong for oil pipes of any one of claims 1 to 3,

the locking structure (4) comprises a ratchet wheel (11), a pawl (12), a pawl spring (13) and a ratchet wheel spring (14);

two mounting holes are formed in the caliper body (2) on the right side of the upper ear plate (3), and a pawl spring (13) and a ratchet spring (14) are respectively fixed in the mounting holes; the heights of the pawl spring (13) and the ratchet spring (14) in the free state are higher than the depth of the mounting hole;

the ratchet wheel (11) and the pawl (12) are positioned between the pawl spring (13) and the ratchet wheel spring (14) and are hinged with the upper pliers body (2-1); the pawl (12) comprises a left pressure plate (16) and a locking block (17), a groove is formed in the inner side of the locking block (17), hook teeth (18) are formed in the outer side of the locking block, and the pawl spring (13) can be pressed down by the left pressure plate (16); the ratchet wheel (11) comprises a right pressing plate (19) and ratchet teeth (20), and when the ratchet teeth (20) abut against the hook teeth (18), the right pressing plate (19) is located above the ratchet wheel spring (14).

5. The special pliers for oil pipes as claimed in claim 1, wherein one side of the upper ear plate (3) close to the pliers handle (1) is provided with a groove, one side of the lower ear plate (5) close to the pliers handle (1) is provided with a groove, a stop pin (6) is arranged below the lower ear plate (5), and a clamping driving arm chain ring (7) is clamped in the groove and fixed through the stop pin (6).

6. The special pliers for oil pipes as claimed in claim 4, wherein when the special pliers for oil pipes are in a clamping state, one end of the clamping transmission arm chain ring (8) is buckled on the upper lug plate (3), the left pressing plate (16) is pressed down, the end of the clamping transmission arm chain ring (8) is located in the grooves of the upper lug plate (3) and the locking block (17), the pawl spring (13) is in a compressed state, the hook teeth (18) press the ratchet teeth (20), the right pressing plate (19) is located above the ratchet spring (14), and the ratchet spring (14) is in a free state.

7. The special pliers for oil pipes as claimed in claim 4, wherein the pawl spring (13) and the ratchet spring (14) are sleeved with split elastic pins (15).

8. The special pliers for oil pipes as claimed in claim 1, wherein a clamping arm chain ring (22) is further disposed between the clamping driving arm chain ring (7) and the clamping transmission arm chain ring (8), and two ends of the clamping arm chain ring (22) are respectively connected with the clamping driving arm chain ring (7) and the clamping transmission arm chain ring (8) in a buckling manner.

9. The special pliers for oil pipes as claimed in claim 1, wherein the chain ring (8) of the clamping transmission arm is further provided with a locking handle (21).

10. The special oil pipe clamp as claimed in claim 1, wherein the inner wall of the clamping block (9) is serrated, and the teeth of the clamping block are acute, obtuse or rounded.