CN112983310A - Back-up tong and power tong - Google Patents
Back-up tong and power tong Download PDFInfo
- Publication number
- CN112983310A CN112983310A CN201911289460.XA CN201911289460A CN112983310A CN 112983310 A CN112983310 A CN 112983310A CN 201911289460 A CN201911289460 A CN 201911289460A CN 112983310 A CN112983310 A CN 112983310A
- Authority
- CN
- China
- Prior art keywords
- tong
- clamping
- power
- cylinder
- joint
- 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.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
Abstract
The utility model provides a back-up tong and power tong belongs to the oil development field. The back-up tong (00) comprises: a support (10) and a plurality of mobile snap-in assemblies (20). The support (10) has a tube inlet (101), and the plurality of movable clamping assemblies (20) comprise a power element (201) and a plurality of clamping elements (202). When through this back-up tong (00) joint target body, can place the target body in body entry (101), later power component (201) through in a plurality of removal joint subassemblies (20) remove, remove to the direction that is close to the target body in order to drive a plurality of joint components (202), thereby realize the joint to the target body, this in-process need not artifical manual carry out chucking and pine to back-up tong (00) and unloads, and then the effectual efficiency that improves joint target body, thereby improved the power that adopts this back-up tong (00) and carried out the efficiency of the operation of making up or breaking out to the body.
Description
Technical Field
The disclosure relates to the field of oil exploitation, in particular to back-up tongs and power tongs.
Background
In the small workover operation of the oil field, a power tong is needed to carry out the screwing-in or unscrewing operation on the pipe body such as an oil pipe or an oil pumping rod, so that the labor intensity of an operator is reduced.
In the related art, the power tongs can be divided into a main tong and a back tong, and the main tong and the back tong are connected through a front guide rod and a rear guide rod. When the oil pipes need to be subjected to make-up or break-out operation, the back pincers need to clamp the coupling used for connecting the two oil pipes, and the main pincers need to clamp the oil pipe above the two oil pipes and drive the oil pipe to rotate so as to realize the make-up or break-out operation on the oil pipes; when the sucker rod needs to be buckled or unbuckled, the back pincers need to clamp the sucker rod below the two sucker rods, and the main pincers need to clamp the square part of the sucker rod above the two sucker rods and drive the sucker rod to rotate so as to realize the operation of buckling or unbuckling the sucker rod.
However, when using the back-up tong, the operator needs to manually perform the fastening and unfastening operations, which results in inefficient operations of fastening or unfastening a pipe body such as an oil pipe or a sucker rod.
Disclosure of Invention
The embodiment of the disclosure provides a back-up wrench and a power wrench. Can solve the problem that the efficiency of carrying out the operation of making up or breaking out such as body such as oil pipe or sucker rod of prior art is lower, technical scheme is as follows:
in a first aspect, there is provided back-up forceps comprising:
a holder having a tube inlet;
with a plurality of removal joint assembly of leg joint, every remove joint assembly and all include: the power element is provided with a fixed end fixedly connected with the bracket and a movable end movably connected with the bracket, and each clamping element is detachably connected with the movable end;
each clamping element is used for clamping a pipe body, and the diameters of the pipe bodies, used for clamping, of the clamping elements are different;
the back-up tong is configured to: the movable end of a power element in each movable clamping assembly is connected with a target clamping element, and after a target pipe body penetrates through the pipe body inlet, the power element drives the target clamping element to move, so that the target clamping element is clamped with the target pipe body.
Optionally, the power element comprises: the telescopic rod is arranged in the cylinder body and is configured to stretch and retract in the cylinder body;
wherein, the cylinder body is kept away from one end in the telescopic link is the expansion end, the telescopic link is kept away from the one end of cylinder body is the stiff end.
Optionally, each of the mobile clamping assemblies further includes: with support fixed connection's slide structure, the slide structure have with the same spout of the extending direction of telescopic link, the cylinder body is located in the spout and with slide structure swing joint.
Optionally, the power element further comprises: with the cylinder body is kept away from the one end fixed connection's of telescopic link first sub connector, every the joint component all includes: and the second sub-clamping piece is clamped with the first sub-clamping piece.
Optionally, the first sub-connector is a dovetail groove, and the second sub-connector is a protruding structure matched with the dovetail groove in shape.
Optionally, the cylinder body is a hydraulic cylinder or a pneumatic cylinder.
Optionally, the plurality of clamping elements comprise: the first clamping element is used for clamping the first pipe body;
the bracket also has a first centering groove which is communicated with the pipe body inlet and matched with the size of the first pipe body, and the first centering groove is configured to abut against the side wall of the first pipe body before the first clamping element clamps the first pipe body.
Optionally, the plurality of clamping elements further comprises: the second clamping element is used for clamping a second pipe body, and the diameter of the second pipe body is smaller than that of the first pipe body;
the back-up tong further comprises: with the centering plate of connection can be dismantled to the support, the centering plate have with the second centering groove of the size matching of second body, the second centering groove is configured to after the centering plate with the leg joint, with first centering groove intercommunication, and before second joint component joint the second body, with the lateral wall butt of second body.
Optionally, the support is a symmetrical structure, and the plurality of movable clamping components include: two remove the joint subassembly, two remove the joint subassembly with the symmetry of support sets up.
In another aspect, a power tong is provided, comprising: the back-up tong comprises main tongs, back-up tongs and a connecting structure for connecting the main tongs with the back-up tongs, wherein the back-up tongs are any one of the back-up tongs in the first aspect.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:
this back-up tong includes: the support and a plurality of removal joint assembly. The support has a tubular inlet and the plurality of movable clamping assemblies include a power element and a plurality of clamping elements. When the target body is connected through the back-up tong, the target body can be placed in the body inlet, then the power element in the clamping assembly is moved through a plurality of moving units, so that the clamping elements are moved towards the direction close to the target body, the clamping of the target body is realized, the back-up tong is not required to be manually clamped and loosened in the process, the efficiency of connecting the target body is effectively improved, and the efficiency of the power tong for connecting the back-up tong and loosening the body is improved. And because the diameters of the pipe bodies used for clamping by each clamping element in the plurality of clamping elements in each movable clamping assembly are different, when the pipe bodies with different diameters are clamped, different types of back-ups do not need to be replaced, and only the clamping elements in the back-ups need to be replaced, so that the efficiency of the screwing-on or screwing-off operation can be further improved when the power tongs provided with the back-ups are used for screwing-on or screwing-off operation on the pipe bodies.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a back-up wrench according to an embodiment of the present disclosure;
FIG. 2 is a view showing the effect of the back-up wrench shown in FIG. 1 in clamping a coupling;
FIG. 3 is an effect view of the back-up wrench shown in FIG. 1 engaging a sucker rod;
FIG. 4 is a partial cross-sectional view of a back-up wrench according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural view of another back-up wrench provided in the embodiments of the present disclosure;
fig. 6 is a schematic structural diagram of a card element provided in an embodiment of the disclosure;
FIG. 7 is a schematic structural diagram of another back-up wrench provided by the embodiment of the present disclosure;
FIG. 8 is a schematic structural diagram of another back-up wrench according to an embodiment of the present disclosure;
FIG. 9 is a schematic structural view of a centering plate provided in an embodiment of the present disclosure;
FIG. 10 is a schematic structural diagram of a second clamping element according to an embodiment of the disclosure;
fig. 11 is a schematic structural diagram of a power tong according to an embodiment of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
The embodiment of the disclosure provides back-up tongs, which are used for clamping a pipe body. Referring to fig. 1, fig. 1 is a schematic structural diagram of a back-up wrench according to an embodiment of the present disclosure. The back-up tong may comprise: a rack 10 and a plurality of mobile snap-in assemblies 20.
The holder 10 has a tube inlet 101.
A plurality of mobile snap-in assemblies 20 are connected to the rack 10, and each mobile snap-in assembly 20 may include: the power element 201 and a plurality of clamping elements 202, the power element 201 has a fixed end fixedly connected with the bracket 10 and a movable end movably connected with the bracket 10, and each clamping element 202 is detachably connected with the movable end of the power element 201.
Wherein each clamping element 202 is adapted to clamp a tubular body, and the diameters of the tubular bodies for clamping of the respective clamping elements 202 of the plurality of clamping elements 202 are different. By way of example, each snap element 202 may comprise: a plurality of latch teeth 2021. The clamping element 202 can be clamped to the tube body by means of a plurality of clamping teeth 2021.
The back-up tong is configured to: the movable end of the power element 201 in each movable clamping assembly 20 is connected to a target clamping element for clamping a target tube, and after the target tube passes through the tube inlet 101, the power element 201 drives the target clamping element to move, so that the target clamping element clamps the target tube.
In one application scenario, the tubular body may be a coupling or a sucker rod for connecting two pipes, and in this case, the plurality of clamping elements 202 may include: two clamping elements 202, one 202a of the two clamping elements 202 for clamping a coupling and the other 202b for clamping a sucker rod.
Referring to fig. 2, fig. 2 is a view illustrating an effect when the back-up wrench shown in fig. 1 engages a coupling. When it is desired to clamp a coupling 01 using the back-up tong shown in fig. 1, that is, a target pipe body is a coupling 01 for connecting two pipes, at this time, an operator needs to select a clamping element 202a for clamping the coupling 01 based on the target pipe body as a target clamping element. First, an operator may install a snap-in element 202a for snapping a collar 01 at the active end of the power element 201 in each moving snap-in assembly 20; the operator can then adjust the position of the holder 10 so that the collar 01 is located within the tube inlet 101 in the holder 10; then, the operator can control the movable ends of the power elements 201 in the plurality of movable clamping assemblies 20 to move toward the coupling 01, so as to drive the clamping elements 202a to move toward the coupling 01, so that the clamping elements 202a clamp the coupling 01.
Referring to fig. 3, fig. 3 is an effect view of the back-up wrench shown in fig. 1 clamping the sucker rod. When the back-up wrench shown in fig. 1 is required to clamp the sucker rod 02, that is, the target pipe body is the sucker rod 02, at this time, the clamping element 202b selected by the operator based on the target pipe body for clamping the sucker rod 02 is required to be the target clamping element. Firstly, an operator can install a clamping element 202b for clamping the sucker rod 02 at the movable end of the power element 201 in each movable clamping assembly 20; the operator can then adjust the position of the stand 10 so that the sucker rod 02 is located in the tube inlet 101 in the stand 10; then, the operator can control the movable end of the power element 201 in the plurality of movable clamping assemblies 20 to move towards the direction close to the sucker rod 02, so as to drive the clamping element 202b to move towards the sucker rod 02, so that the clamping element 202b is clamped with the sucker rod 02.
In summary, the back-up tong provided by the embodiment of the present disclosure includes: the support and a plurality of removal joint assembly. The support has a tubular inlet and the plurality of movable clamping assemblies include a power element and a plurality of clamping elements. When the target body is connected through the back-up tong, the target body can be placed in the body inlet, then the power element in the clamping assembly is moved through a plurality of moving units, so that the clamping elements are moved towards the direction close to the target body, the clamping of the target body is realized, the back-up tong is not required to be manually clamped and loosened in the process, the efficiency of connecting the target body is effectively improved, and the efficiency of the power tong for connecting the back-up tong and loosening the body is improved. And because the diameters of the pipe bodies used for clamping by each clamping element in the plurality of clamping elements in each movable clamping assembly are different, when the pipe bodies with different diameters are clamped, different types of back-ups do not need to be replaced, and only the clamping elements in the back-ups need to be replaced, so that the efficiency of the screwing-on or screwing-off operation can be further improved when the power tongs provided with the back-ups are used for screwing-on or screwing-off operation on the pipe bodies.
In the disclosed embodiment, referring to fig. 4, fig. 4 is a partial sectional view of a back-up wrench provided by the disclosed embodiment. The power element 201 may include: a cylinder 201a, and a telescopic rod 201b located inside the cylinder 201a, the telescopic rod 201b being configured to be telescopic inside the cylinder 201 a; the end of the cylinder 201a far from the inside of the telescopic rod 201b is a movable end of the power element 201, and the end of the telescopic rod 201b far from the cylinder 201a is a fixed end of the power element 201. At this time, the telescopic rod 201b is extended and contracted in the cylinder 201a, thereby moving the cylinder 201a in the axial direction of the telescopic rod 201 b.
It should be noted that, one end of the telescopic rod 201b away from the cylinder 201a may be provided with a first through hole 201b1, and the support 10 may further include: and a fixed bracket 102 fixedly connected with the bracket 10. The fixing bracket 102 may be a groove structure, and two ends of the protrusion of the groove structure are respectively provided with a second through hole (not shown in fig. 4) matching with the first through hole 201b1 in shape. One end of the telescopic rod 201b, which is far away from the cylinder body 201a, is located in a groove structure in the fixed bracket 102, and at this time, the first through hole 201b1 in the telescopic rod 201b coincides with the axis of the second through hole in the fixed bracket 102, so that one end of the telescopic rod 201b, which is far away from the cylinder body 201a, can be fixed on the fixed bracket 102 through a pin.
Optionally, referring to fig. 5, fig. 5 is a schematic structural diagram of another back-up wrench provided in the embodiment of the present disclosure. Each mobile snap-in assembly 20 may further include: the sliding way structure 203 is fixedly connected with the support 10, the sliding way structure 203 is provided with a sliding groove (not shown in fig. 5) which is the same as the extending direction of the telescopic rod 201b, and the cylinder body 201a is positioned in the sliding groove and movably connected with the sliding way structure 203. For example, the slideway structure 203 and the bracket 10 can be connected by a screw a, and at this time, under the driving of the telescopic rod 201b, the cylinder 201a can be retracted back and forth along the chute in the slideway structure 203.
In the embodiment of the present disclosure, referring to fig. 5 and 6, fig. 6 is a schematic structural diagram of a card element provided in the embodiment of the present disclosure. The power element 201 may further include: the first clamping element 201c is fixedly connected to an end of the cylinder 201a away from the telescopic rod 201b, and each clamping element 202 may include: and a second sub-connector 2022 to be engaged with the first sub-connector 201 c. In each clamping element 202, the second snap connector 2022 and the plurality of snap teeth 2021 are located on opposite sides of the clamping element 202.
Alternatively, the first sub-tab 201c may be a dovetail groove, and the second sub-tab 2022 may be a convex structure matching the shape of the dovetail groove. When the clamping element 202 needs to be connected with the movable end of the power element 201, the protrusion structure in the clamping element 202 can be pushed into the dovetail groove in the power element 201, and at this time, under the action of the dovetail groove and the protrusion structure, the clamping element 202 cannot move back and forth along the axial direction of the telescopic rod 201 b.
It should be noted that the movable end of the power element 201 may also be provided with four threaded holes (not shown in fig. 5) opposite to each other in pairs and four screws 201d matching with the four threaded holes. The four threaded holes are adjacent to the second sub-connector 2022, the axial direction of the threaded holes is perpendicular to the axial direction of the telescopic rod 201b, and the threaded holes are closer to the fixed end of the power element 201 relative to the second sub-connector 2022. The four screws 201d are configured to be screwed into the four threaded holes after the second sub-connector 2022 in the clip element 202 is pushed into the first sub-connector 201c in the power element 201, wherein an orthographic projection of the screw end cap of each screw 201d on the support 10 at least partially coincides with an orthographic projection of the second sub-connector 2022 on the support 10, so that the screw end cap of each screw 201d can limit the movement of the clip element 202 in a direction perpendicular to the axial direction of the telescopic rod 201 b. So that the snap element 202 can be fixed at the movable end of the power element 201 under the matching of the first sub connector 201c and the second sub connector 2022, the four threaded holes and the four screws 201 d.
In the disclosed embodiment, the cylinder 201a may be a hydraulic cylinder or a pneumatic cylinder. When using back-up tong 00 to carry out the chucking to the target body, need guarantee that back-up tong 00 can not cause the damage to the target body, and adopt pneumatic cylinder or pneumatic cylinder as power transmission device, when the too big circumstances of clamp force of back-up tong 00 to the target body appears, pneumatic cylinder or pneumatic cylinder still have certain buffer capacity to can prevent to cause the damage because the clamp force is too big to the target body.
Optionally, referring to fig. 7, fig. 7 is a schematic structural diagram of another back-up wrench provided in the embodiment of the present disclosure. The plurality of snap elements 202 may include: the first clamping element is used for clamping the first pipe body. In one application scenario, the first tubular body may be a collar for connecting two tubulars, and at this time, the first clamping element is the clamping element 202a, and the size of the first clamping element matches the size of the collar. The holder 10 also has a first pair of centering grooves 103 communicating with the tubular body inlet 101 and matching the dimensions of the first tubular body, the first pair of centering grooves 103 being configured to abut against the lateral wall of the first tubular body before the first snap-engagement element snaps the first tubular body. This first middle groove 103 can play limiting displacement to first body, ensures the first body of joint that first joint component can be accurate. Thereby the reliability of the first body of back-up tong joint has been improved.
In the embodiment of the present disclosure, referring to fig. 8, fig. 8 is a schematic structural diagram of another back-up wrench provided in the embodiment of the present disclosure. The plurality of snap elements 202 may further comprise: the second clamping element is used for clamping a second pipe body, the second pipe body can be a sucker rod in an application scene, at the moment, the second clamping element is the clamping element 202b, the size of the second clamping element is matched with that of the sucker rod, and the diameter of the second pipe body is smaller than that of the first pipe body; back-up forceps 00 may also include: and a centering plate 30 detachably coupled to the bracket 10. In order to more clearly see the structure of the centering plate 30, please refer to fig. 9, and fig. 9 is a schematic structural view of a centering plate provided by an embodiment of the present disclosure. The centering plate 30 has a second centering slot 301 that matches the size of the second tube. The second centring groove 301 is configured to communicate with the first centring groove 103 after the centring plate 30 has been connected to the support 10 and to abut against the side wall of the second tubular body before the second snap-in element snaps into engagement with the second tubular body. Illustratively, the centering plate 30 may be fixedly connected with the bracket 10 by screws. This second is to middle groove 301 can play limiting displacement to the second body, ensures the joint second body that second joint component can be accurate. Thereby the reliability of back-up tong joint second body has been improved.
Optionally, referring to fig. 10, fig. 10 is a schematic structural diagram of a second card-connecting element according to an embodiment of the present disclosure, the second card-connecting element may be provided with a plurality of through holes 202b1 in a direction perpendicular to the second sub-connector 2022, the plurality of through holes 202b1 may reduce the weight of the second card-connecting element, so as to reduce the power consumed by the back-up wrench during use, and the second card-connecting element may further include: the protrusion 202b 2. When the second snap-in elements are two second snap-in elements, the two second snap-in elements can be mounted on the movable end of the power element 201 in a relatively inverted manner. At this moment, the two second clamping elements of the asymmetric structure can better clamp the second pipe body.
Alternatively, referring to fig. 8, the rack 10 may have a symmetrical structure, and the plurality of moving clamping assemblies 20 may include: two moving clamping assemblies 20, the two moving clamping assemblies 20 being symmetrically arranged with respect to the symmetry axis of the rack 10.
It should be noted that, in the above embodiments, an example is schematically illustrated in which one end of the telescopic rod is fixed, and the other end of the telescopic rod moves in the cylinder to drive the cylinder to move toward the direction close to the target pipe.
In summary, the back-up tong provided by the embodiment of the present disclosure includes: the support and a plurality of removal joint assembly. The support has a tubular inlet and the plurality of movable clamping assemblies include a power element and a plurality of clamping elements. When the target body is connected through the back-up tong, the target body can be placed in the body inlet, then the power element in the clamping assembly is moved through a plurality of moving units, so that the clamping elements are moved towards the direction close to the target body, the clamping of the target body is realized, the back-up tong is not required to be manually clamped and loosened in the process, the efficiency of connecting the target body is effectively improved, and the efficiency of the power tong for connecting the back-up tong and loosening the body is improved. And because the diameters of the pipe bodies used for clamping by each clamping element in the plurality of clamping elements in each movable clamping assembly are different, when the pipe bodies with different diameters are clamped, different types of back-ups do not need to be replaced, and only the clamping elements in the back-ups need to be replaced, so that the efficiency of the screwing-on or screwing-off operation can be further improved when the power tongs provided with the back-ups are used for screwing-on or screwing-off operation on the pipe bodies.
The embodiment of the disclosure also provides a power tong, and referring to fig. 11, fig. 11 is a schematic structural diagram of the power tong provided by the embodiment of the disclosure. The power tong may include: main clamp 03 and back clamp 00, and a connecting structure 04 for connecting main clamp 03 and back clamp 00. The back-up tong 00 may be the back-up tong 00 shown in fig. 1 or fig. 2.
It should be noted that the connecting structure 04 may include: a connecting rod 041 and an elastic spring 042. The bracket 10 of the back-up tong 00 may be provided with a through hole for passing the connecting rod 041.
In an application scene, the power tongs can carry out make-up or break-out operation on an oil pipe or carry out make-up or break-out operation on a sucker rod. When the power tongs carry out the screwing-in or screwing-out operation on the oil pipes, the pipe body clamped by the back tongs is a coupling used for connecting two oil pipes. When the power tongs carry out the operation of making up or breaking out on the sucker rod, the pipe body that back-up tong joint was connected is the sucker rod.
When it is required to make-up or break-out a tubular string using the power tong shown in fig. 11, first, an operator may install a clamping element 202 for clamping a coupling at the movable end of the power element 201 in the back-up tong 00; then, an operator can install the power tongs on the oil pipe and adjust the position of the power tongs so that the main tongs 03 is positioned at the oil pipe above the two oil pipes, the back-up tongs 00 is positioned at the coupling between the two oil pipes, after the position adjustment is completed, the operator can control the main tongs 03 to clamp the oil pipe above, and the back-up tongs 00 can clamp the coupling between the two oil pipes; finally, an operator can control the main tong 03 to rotate, and the back-up tong 00 is fixed to drive the oil pipe above to rotate, so that the oil pipe can be buckled or unbuckled.
When the power tong shown in fig. 11 is needed to make-up or break-out operations on a sucker rod, firstly, an operator can install a clamping element 202 for clamping the sucker rod at the movable end of the power element 201 in the back-up tong 00; then, an operator can install the power tongs on the sucker rod and adjust the position of the power tongs, so that the main tongs 03 is positioned at the square position of the upper sucker rod in the two sucker rods, the back-up tongs 00 is positioned at the lower sucker rod, after the position adjustment is completed, the operator can control the main tongs 03 to clamp the square position of the upper sucker rod, and the back-up tongs 00 to clamp the lower sucker rod; finally, the operator can control the main tong 03 to rotate, and the back-up tong 00 is fixed to drive the sucker rod above to rotate, so that the operation of screwing on or unscrewing the sucker rod is completed.
It should be noted that, when the back-up tong 00 is used for connecting two tubing couplings or sucker rods, under the action of hydraulic pressure or air pressure, the telescopic rod 201b in the power element 201 in the back-up tong 00 can drive the cylinder 201a to move, and further can drive the clamping element 202 to move, so that the clamping element 202 is used for clamping two tubing couplings or sucker rods.
In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. Back-up tong, characterized in that it comprises:
a holder (10), the holder (10) having a tube inlet (101);
a plurality of mobile snap-in assemblies (20) connected with the support (10), each of the mobile snap-in assemblies (20) comprising: the clamping device comprises a power element (201) and a plurality of clamping elements (202), wherein the power element (201) is provided with a fixed end fixedly connected with the bracket (10) and a movable end movably connected with the bracket (10), and each clamping element (202) is detachably connected with the movable end;
each clamping element (202) is used for clamping a pipe body, and the diameters of the pipe bodies, used for clamping, of the clamping elements (202) in the plurality of clamping elements (202) are different;
the back-up forceps (00) is configured to: every the expansion end that removes power component (201) among the joint subassembly (20) is connected with target joint component, and passes at the target body behind body entry (101), through power component (201) drive the removal of target joint component, so that target joint component joint the target body.
2. Back-up tong according to claim 1,
the power element (201) comprises: a cylinder (201a), and a telescopic rod (201b) located within the cylinder (201a), the telescopic rod (201b) configured to telescope within the cylinder (201 a);
wherein, cylinder body (201a) is kept away from the one end in telescopic link (201b) is the expansion end, telescopic link (201b) keep away from the one end of cylinder body (201a) is the stiff end.
3. Back-up tong according to claim 2,
each of the mobile clamping assemblies (20) further comprises: with support (10) fixed connection's slide structure (203), slide structure (203) have with the same spout of the extending direction of telescopic link (201b), cylinder body (201a) be located in the spout and with slide structure (203) swing joint.
4. Back-up tong according to claim 2,
the power element (201) further comprises: with cylinder body (201a) is kept away from the first son of one end fixed connection of telescopic link (201b) connects piece (201c), every joint component (202) all includes: and a second sub-connector (2022) which is clamped with the first sub-connector (201 c).
5. Back-up tong according to claim 4,
the first sub-clamping piece (201c) is a dovetail groove, and the second sub-clamping piece (2022) is a protruding structure matched with the dovetail groove in shape.
6. Back-up tong according to any one of claims 2 to 5,
the cylinder body (201a) is a hydraulic cylinder or a pneumatic cylinder.
7. Back-up tong according to any one of claims 1 to 5,
the plurality of snap elements (202) comprises: the first clamping element is used for clamping the first pipe body;
the bracket (10) further comprises a first centering groove (103) which is communicated with the pipe body inlet (101) and matched with the size of the first pipe body, and the first centering groove (103) is configured to abut against the side wall of the first pipe body before the first clamping element clamps the first pipe body.
8. Back-up tong according to claim 7,
the plurality of snap elements (202) further comprising: the second clamping element is used for clamping a second pipe body, and the diameter of the second pipe body is smaller than that of the first pipe body;
the back-up tong (00) further comprises: with the support (10) can dismantle centering plate (30) of connection, centering plate (30) have with the second centering groove (301) of the size matching of second body, second centering groove (301) are configured as after centering plate (30) with support (10) are connected, with first centering groove (103) intercommunication, and before second joint component joint the second body, with the lateral wall butt of second body.
9. Back-up tong according to any one of claims 1 to 5,
the support (10) is a symmetrical structure, and the plurality of mobile snap-in assemblies (20) comprise: two moving snap-in assemblies (20), the two moving snap-in assemblies (20) being arranged symmetrically with respect to the axis of symmetry of the support (10).
10. A power tong, comprising: a main tong and a back-up tong, and a connecting structure for connecting the main tong and the back-up tong, the back-up tong being as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289460.XA CN112983310A (en) | 2019-12-13 | 2019-12-13 | Back-up tong and power tong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289460.XA CN112983310A (en) | 2019-12-13 | 2019-12-13 | Back-up tong and power tong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112983310A true CN112983310A (en) | 2021-06-18 |
Family
ID=76342900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911289460.XA Pending CN112983310A (en) | 2019-12-13 | 2019-12-13 | Back-up tong and power tong |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112983310A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100263495A1 (en) * | 2007-11-01 | 2010-10-21 | National Oilwell Varco Norway As | Device for a Power Tong |
| CN102839931A (en) * | 2011-06-24 | 2012-12-26 | 苏州海德石油工具有限公司 | Drilling power tongs with improved structure |
| CN103362464A (en) * | 2012-04-11 | 2013-10-23 | 成都清华机械制造有限公司 | Multifunctional hydraulic power slip |
| CN104775772A (en) * | 2014-01-13 | 2015-07-15 | 中国石油化工股份有限公司 | Oil pipe screwing method and device in mechanical well repair operation |
| CN105545231A (en) * | 2016-02-26 | 2016-05-04 | 山东胜利石油装备产业技术研究院 | Floating type automatic sucker rod screwing on and off device |
| CN207377516U (en) * | 2017-11-15 | 2018-05-18 | 三一集团有限公司 | Hydraulic tongs and hydraulic test |
| CN208594885U (en) * | 2018-09-06 | 2019-03-12 | 承德石油高等专科学校 | A kind of drilling machine back-up tong device |
-
2019
- 2019-12-13 CN CN201911289460.XA patent/CN112983310A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100263495A1 (en) * | 2007-11-01 | 2010-10-21 | National Oilwell Varco Norway As | Device for a Power Tong |
| CN102839931A (en) * | 2011-06-24 | 2012-12-26 | 苏州海德石油工具有限公司 | Drilling power tongs with improved structure |
| CN103362464A (en) * | 2012-04-11 | 2013-10-23 | 成都清华机械制造有限公司 | Multifunctional hydraulic power slip |
| CN104775772A (en) * | 2014-01-13 | 2015-07-15 | 中国石油化工股份有限公司 | Oil pipe screwing method and device in mechanical well repair operation |
| CN105545231A (en) * | 2016-02-26 | 2016-05-04 | 山东胜利石油装备产业技术研究院 | Floating type automatic sucker rod screwing on and off device |
| CN207377516U (en) * | 2017-11-15 | 2018-05-18 | 三一集团有限公司 | Hydraulic tongs and hydraulic test |
| CN208594885U (en) * | 2018-09-06 | 2019-03-12 | 承德石油高等专科学校 | A kind of drilling machine back-up tong device |
Non-Patent Citations (1)
| Title |
|---|
| 王一岑等: "油套管上卸扣扭矩准确度的影响因素及改善措施", 《焊管》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101346529B (en) | Apparatus and method for facilitating connecting and disconnecting members | |
| CN105643312A (en) | Elastic clamp for tubular thin-wall part | |
| CN109736728B (en) | Automatic drill rod loading and unloading and water feeder unit and device for mining drilling machine and construction method | |
| CN111997534B (en) | Petroleum drill pipe | |
| CN110513058B (en) | Water braid dismounting device for drill rod on rear end of power head | |
| CN112983310A (en) | Back-up tong and power tong | |
| CN105156041A (en) | Full-circle slewing drilling machine and casing clamping mechanism thereof | |
| CN209040787U (en) | A kind of Novel down-hole operation fishing socket | |
| CN107626838B (en) | Clamping mechanism of pipe expander | |
| CN103567960B (en) | Pin pulling device | |
| CN114932398B (en) | Hinge lock catch type RTP pipe integral type connection process | |
| CN216479526U (en) | Automatic plugging device of engineering quick connector | |
| CN101000994A (en) | Special installation tool for wedge wire clamp | |
| CN109202122A (en) | A kind of engine cylinder head automatic drilling equipment | |
| CN202756807U (en) | Direct insertion type slipknot quickly-installed pipe fitting | |
| CN211648025U (en) | Oil pipe centralizer | |
| CN211249006U (en) | Pipe connecting device | |
| CN210483583U (en) | Water braid dismounting device for drill rod on rear end of power head | |
| CN210134815U (en) | Single-layer multi-branch reverse drilling and completion integrated device | |
| CN203430458U (en) | Fishing gear for instruments in casings | |
| CN208051449U (en) | A kind of collet chuck mounting device | |
| CN112610772B (en) | Quick connector | |
| CN211278243U (en) | Quick connector butt-joint device | |
| CN213470983U (en) | Sleeve joint convenient to installation combination | |
| CN220647105U (en) | Pipeline adapter for pressurizing tap water pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210618 |