CN217462069U - Double-cylinder single-action top drive back-up wrench - Google Patents
Double-cylinder single-action top drive back-up wrench Download PDFInfo
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- CN217462069U CN217462069U CN202221144110.1U CN202221144110U CN217462069U CN 217462069 U CN217462069 U CN 217462069U CN 202221144110 U CN202221144110 U CN 202221144110U CN 217462069 U CN217462069 U CN 217462069U
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Abstract
The utility model discloses a double-cylinder single-action top drive back-up wrench, which has the key points of the technical proposal that the back-up wrench comprises two wrench bodies; two pistons are arranged in the two pliers bodies respectively, and can slide oppositely under the action of hydraulic pressure; a support; a pair of tongs teeth; the springs are provided with a plurality of springs respectively acting on the two pistons and used for pushing the two pistons to reset when the hydraulic pressure stops acting on the pistons; the bell mouth is arranged at the bottom of the clamp body and consists of two single pieces; the two fixed semi-rings are arranged and are respectively fixed at the bottoms of the two clamp bodies; the two connecting semi-rings are arranged and fixedly connected to the tops of the two single components respectively, and the connecting semi-rings are connected to the clamp body through bolts; and a spacing semi-ring; through the setting of spacing semi-ring and ring channel for need not the manual work and lift the monomer when unscrewing the bolt, after unscrewing the bolt, make spacing semi-ring and ring channel break away from to accomplish the dismantlement with the monomer translation.
Description
Technical Field
The utility model relates to an oil drilling and production technical field, more specifically the theory that says so, it relates to a double-cylinder single-action top drive back-up tong.
Background
The top drive is an essential product for petroleum drilling, and compared with the traditional rotary table kelly bar operation mode, the top drive adopts the drill bar column to drill, so that the operations of circulating drilling fluid, screwing on and unscrewing, back reaming and the like can be realized, and the drilling efficiency and the operation safety are improved.
The top driver comprises a back-up tong device, the back-up tong device commonly used is provided with a double-cylinder single-action back-up tong, a horn mouth can be fixed at the bottom of the back-up tong, and the drill rod can frequently collide with the horn mouth to easily cause the damage of the horn mouth, so that the horn mouth needs to be replaced at intervals.
The existing horn mouth is directly fixed at the bottom of a back-up tong device through bolts and gaskets, the horn mouth is generally formed by two horn-shaped half rings, the weight of each horn-shaped half ring is about 30 kilograms, when the horn-shaped half rings are disassembled and replaced, two persons are needed to arrange and complete the horn-shaped half rings, one person lifts the horn-shaped half rings, the bolts are detached by another person, and manpower waste is caused.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a double-cylinder single-action top drive back-up wrench, its setting through spacing semi-ring and ring channel for need not the manual work and lift monomer spare when unscrewing the bolt, after unscrewing the bolt, make spacing semi-ring and ring channel break away from to accomplish the dismantlement with monomer spare translation.
In order to achieve the above purpose, the utility model provides a following technical scheme: a double-cylinder single-action top drive back-up wrench comprises two wrench bodies;
two pistons are arranged in the two pliers bodies respectively, and can slide oppositely under the action of hydraulic pressure;
the two supports are arranged and respectively fixed on one sides of the two pistons, which are close to each other;
a plurality of clamp teeth are arranged on one side, close to each other, of each of the two supports, and the two supports clamp the drill rod through the clamp teeth;
the springs are provided with a plurality of springs and respectively act on the two pistons, and the springs are used for pushing the two pistons to reset when hydraulic pressure stops acting on the pistons;
the horn mouth is arranged at the bottom of the clamp body and consists of two single pieces, each single piece is a horn-shaped semi-ring, and the two single pieces are respectively positioned at the bottoms of the two clamp bodies;
the two fixed semi-rings are arranged and are respectively fixed at the bottoms of the two clamp bodies;
the two connecting semi-rings are arranged and fixedly connected to the tops of the two single components respectively, and the connecting semi-rings are connected to the clamp body through bolts;
the outer sides of the two fixed semi-rings are fixedly connected with a limiting semi-ring;
the annular groove is formed in one side, close to each other, of each of the two connecting semi-rings, when the tops of the connecting semi-rings are attached to the bottom of the clamp body, the annular groove is aligned with the limiting semi-rings, and when the two connecting semi-rings are attached together to form a complete ring, the two limiting semi-rings are inserted into the two annular grooves respectively.
Through adopting above-mentioned technical scheme, through the setting of spacing semi-ring and ring channel for need not the manual work and lift monomer when unscrewing the bolt, through the support of spacing semi-ring, just can make monomer hang in pincers body bottom, after unscrewing the bolt, make spacing semi-ring and ring channel break away from to accomplish the dismantlement with monomer translation.
The utility model discloses further set up to: the auxiliary plate is fixedly connected to the outer sides of the half connecting rings, at least one auxiliary plate is arranged on each half connecting ring, and when the half connecting rings are fixed to the bottom of the clamp body, the auxiliary plates are attached to the bottom of the clamp body;
and each auxiliary plate corresponds to one supporting plate, the supporting plates are arranged at the bottoms of the pliers bodies, and when the two connecting semi-rings are connected at the bottoms of the pliers bodies to form a complete ring, the supporting plates are attached to the bottoms of the auxiliary plates to support the auxiliary plates and are positioned at one ends, far away from the connecting semi-rings, of the auxiliary plates.
The utility model discloses further set up to: the auxiliary plate is provided with a abdicating groove, the supporting plate can penetrate through the abdicating groove, and when the supporting plate penetrates through the abdicating groove, the connecting semi-ring is positioned on one side of the limiting semi-ring, which is far away from the fixed semi-ring;
when the two connecting semi-rings are connected at the bottom of the clamp body to form a complete ring, the abdicating groove is positioned at one side of the supporting plate close to the connecting semi-rings.
The utility model discloses further set up to: the outer side of the connecting semi-ring is fixedly connected with an arc-shaped plate, and the arc-shaped plate can be fixed at the bottom of the clamp body through a bolt.
The utility model discloses further set up to: a first accommodating cavity is formed in each of the two clamp bodies, and a second accommodating cavity is formed in one side, close to each other, of the two first accommodating cavities of the two clamp bodies;
the piston comprises a large-diameter section which is arranged in the first accommodating cavity;
the small-diameter section penetrates through the second accommodating cavity, and the support is fixed at one end, far away from the large-diameter section, of the small-diameter section;
the big footpath section is with first chamber partition that holds for the hydraulic pressure chamber of keeping away from the support and the chamber that resets that is close to the support, and the spring setting is at the intracavity that resets, and the both ends of spring support tightly respectively on big footpath section is close to the inner wall that path section one end and first cavity are close to second cavity one end.
The utility model discloses further set up to: the first accommodating cavity and the second accommodating cavity are both circular cavities, the two first accommodating cavities and the two second accommodating cavities are coaxially arranged, and the diameter of each first accommodating cavity is larger than that of each second accommodating cavity; the major diameter section is the cylinder with the first coaxial with footpath that holds the chamber, and the minor diameter section is located the second and holds the coaxial cylinder with the footpath of chamber.
The utility model discloses further set up to: the plurality of springs are arranged around the circumferential direction of the second accommodation chamber.
To sum up, the utility model discloses compare and have following beneficial effect in prior art: the utility model discloses a setting of spacing semi-ring and ring channel for need not the manual work when unscrewing the bolt and lift the monomer spare, behind the bolt of unscrewing, make spacing semi-ring and ring channel break away from to accomplish the dismantlement with monomer spare translation.
Drawings
FIG. 1 is a schematic view of the overall structure of the embodiment;
FIG. 2 is a sectional view of the overall structure of the embodiment;
FIG. 3 is a schematic diagram of an embodiment of a half connector;
FIG. 4 is an enlarged view of the portion B of FIG. 3;
fig. 5 is an enlarged view of a portion a of fig. 2.
In the figure: 1. a clamp body; 11. a through groove; 12. a first accommodating chamber; 121. a hydraulic chamber; 122. a reset chamber; 13. a second accommodating chamber; 14. a guide groove; 2. a bell mouth; 21. a single piece; 22. connecting the half rings; 221. an arc-shaped plate; 222. an annular groove; 3. a connecting assembly; 31. a first ear mount; 32. a second ear mount; 33. a pin shaft; 4. a piston; 41. a large diameter section; 42. a small diameter section; 5. a support; 6. a pair of tongs teeth; 7. a spring; 8. an auxiliary plate; 81. a yielding groove; 82. a support plate; 83. a connecting plate; 9. a stationary half ring; 91. and a limiting semi-ring.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
The present invention will be further described with reference to the accompanying drawings and preferred embodiments.
The embodiment is as follows: a double-cylinder single-action top-drive back-up wrench is shown in attached figures 1-5 and comprises two wrench bodies 1, pistons 4 which are respectively arranged in the two wrench bodies 1 and can slide in an opposite direction and in a back-to-back direction, two supports 5 which are fixedly connected to one sides, close to each other, of the two pistons 4, a plurality of wrench teeth 6 which are fixedly connected to one sides, close to each other, of the two supports 5, and a horn mouth 2 arranged at the bottom of the wrench bodies 1. Specifically, the through grooves 11 which vertically penetrate through the forceps bodies 1 are formed in one side, close to each other, of each forceps body 1, and when the back-up forceps work, the drill rod penetrates through the through grooves 11. The piston 4 slides in the opposite direction and away from each other to drive the jaw 6 on the support 5 to clamp and release the drill rod.
Specifically, a first accommodating cavity 12 is arranged in each forceps body 1, and a second accommodating cavity 13 is arranged on one side, close to each other, of the first accommodating cavities 12 of the two forceps bodies 1; the piston 4 comprises a large-diameter section 41 and a small-diameter section 42, the large-diameter section 41 is arranged in the second accommodating cavity 13, the small-diameter section 42 penetrates through the second accommodating cavity 13, and the support 5 is fixed at one end, far away from the large-diameter section 41, of the small-diameter section 42. Specifically, the large-diameter section 41 divides the first accommodating cavity 12 into a hydraulic cavity 121 far away from the support 5 and a reset cavity 122 close to the support 5, a plurality of springs 7 are arranged in the reset cavity 122, and two ends of each spring 7 respectively abut against the inner walls of one end of the large-diameter section 41 close to the small-diameter section 42 and one end of the first cavity close to the second cavity.
When clamping is carried out, the pressure is applied to the hydraulic cavity 121, so that the two pistons 4 are pushed to slide oppositely, and the two pistons 4 drive the clamp teeth 6 on the support 5 to clamp the drill rod; when the clamping of the drill rod needs to be released, the hydraulic cavity 121 is decompressed, and the two pistons 4 are pushed to slide towards directions deviating from each other under the action of the spring 7, so that the jaw 6 is driven to release the clamping of the drill rod.
Specifically, the first accommodating cavity 12 and the second accommodating cavity 13 are both circular cavities, the two first accommodating cavities 12 and the two second accommodating cavities 13 are coaxially arranged, and the diameter of the first accommodating cavity 12 is larger than that of the second accommodating cavity 13; the large diameter section 41 is a cylinder coaxial with the first accommodating cavity 12 and the small diameter section 42 is located in the second accommodating cavity 13. Specifically, a plurality of springs 7 are provided arranged around the circumferential direction of the second accommodation chamber 13.
Specifically, a guide groove 14 is arranged on one side of the second accommodating cavity 13, which is far away from the first accommodating cavity 12, and the guide groove 14 is communicated with the second accommodating cavity 13 and the through groove 11; the support 5 is driven by the piston 4 to slide in the through groove 11, and in the sliding process, the support 5 can drive the clamp teeth 6 to extend into the through groove 11 to clamp the drill rod.
Specifically, the bell mouth 2 is composed of two single pieces 21, the single pieces 21 are horn-shaped semi-rings, the two single pieces 21 are respectively located at the bottoms of the two pliers bodies 1, and when the two single pieces 21 are respectively fixed at the bottoms of the two pliers bodies 1, the two single pieces 21 are mutually attached to each other and form the complete bell mouth 2.
Specifically, two fixed half rings 9 are fixedly connected to the bottoms of the two caliper bodies 1, two connecting half rings 22 are fixedly connected to the tops of the two single bodies 21, and the two connecting half rings 22 are coaxial with the two single bodies 21; specifically, two limit half rings 91 are fixedly connected to the outer sides of the two fixed half rings 9, two annular grooves 222 are formed in one side, close to each other, of the two connecting half rings 22, when the bell mouth 2 is installed, the top portions of the two connecting half rings 22 are respectively attached to the bottoms of the two caliper bodies 1, the two connecting half rings 22 are respectively located on two sides, far away from each other, of the two limit half rings 91, the annular grooves 222 are aligned with the limit half rings 91, then the two connecting half rings 22 move towards the direction where the two connecting half rings are close to each other until the two connecting half rings 22 are attached together to form a finished annular ring, at the moment, the two connecting half rings 22 are respectively attached to the outer sides of the two fixed half rings 9, the two single bodies 21 are attached together to form the complete bell mouth 2, and the two limit half rings 91 are respectively embedded into the two annular grooves 222; when the stop half ring 91 is inserted into the annular groove 222, the top of the stop half ring 91 is attached to the groove wall of the top of the annular groove 222.
When carrying out horn mouth 2 and dismantling, need not the manual work and lift monomer 21 when unscrewing the bolt, through spacing semi-ring 91's support, just can make monomer 21 hang in pincers body 1 bottom, after unscrewing the bolt, make spacing semi-ring 91 and ring channel 222 break away from and can accomplish the dismantlement with the translation of monomer 21.
Specifically, the present embodiment further includes auxiliary plate 8 and supporting plate 82, auxiliary plate 8 is fixedly connected to the outer side of connecting half 22, at least one auxiliary plate 8 is disposed on each connecting half 22, and when the top of connecting half 22 is attached to the bottom of caliper 1, auxiliary plate 8 is also attached to the bottom of caliper 1; each auxiliary plate 8 is a support plate 82, and support plate 82 is arranged at the bottom of caliper body 1, and when two connector halves 22 are connected to the bottom of caliper body 1 and form a complete circular ring, support plate 82 is supported at the bottom of auxiliary plate 8 and support plate 82 is located at the end of auxiliary plate 8 far from connector halves 22.
Through the arrangement of the supporting plate 82 and the auxiliary plate 8, the single piece 21 can be supported in an auxiliary manner when the bell mouth 2 is detached, so that the single piece 21 can be hung on the bottom of the clamp body 1 more stably when the bolt is unscrewed.
Specifically, each auxiliary plate 8 is provided with an abdicating groove 81 vertically penetrating through the auxiliary plate 8, the supporting plate 82 can vertically penetrate through the abdicating groove 81, when the connecting half ring 22 is attached to the bottom of the caliper body 1 from bottom to top, the abdicating groove 81 and the supporting plate 82 are aligned, then the connecting half ring 22 is pushed upwards until the connecting half ring 22 is attached to the bottom of the caliper body 1, at the moment, the connecting half ring 22 is positioned on one side of the limiting half ring 91 far away from the fixed half ring 9, and in the process of pushing the connecting half ring 22 upwards, the limiting half ring 91 cannot block the upward movement of the connecting half ring 22; after the top of coupler half 22 is attached to the bottom of caliper 1, coupler half 22 is slid toward the fixed half 9 until coupler half 22 is attached to the outside of fixed half 9, at which time support plate 82 is attached to the bottom of auxiliary plate 8 and relief groove 81 is located on the side of support plate 82 near fixed half 9.
Specifically, each half coupling 22 has two auxiliary plates 8 fixed thereto, so as to improve the stability of the support of the single body 21 by the caliper body 1 when the bell mouth 2 is removed. Specifically, the supporting plate 82 is fixed to the bottom of the caliper body 1 through a connecting plate 83.
Specifically, the outer side of connecting half 22 is fixedly connected with arc 221, sets up the top of connecting half 22 and the top parallel and level of arc 221, and when the top of connecting half 22 and the laminating of pincers body 1 bottom, arc 221 and the laminating of pincers body 1 bottom are fixed arc 221 in pincers body 1 bottom through bolt and gasket to will connect half 22 and monomer 21 to fix in pincers body 1 bottom.
The two pliers bodies 1 are connected together through the two connecting components 3, the two connecting components 3 are respectively positioned at two sides of the through groove 11, and each connecting component 3 comprises a first lug seat 31 fixed on one pliers body 1, two second lug seats 32 fixedly connected on the other pliers body 1 and a pin shaft 33 simultaneously penetrating through the first lug seat 31 and the two second lug seats 32; the two second ear seats 32 are respectively located at the top and bottom of the first ear seat 31.
The working principle of the parallel-bar single-action top-drive back-up wrench when in use is as follows: when carrying out horn mouth 2 and dismantling, need not the manual work and lift monomer 21 when unscrewing the bolt, through spacing semi-ring 91's support, just can make monomer 21 hang in pincers body 1 bottom, after unscrewing the bolt, make spacing semi-ring 91 and ring channel 222 break away from and can accomplish the dismantlement with the translation of monomer 21.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.
Claims (7)
1. The utility model provides a double-cylinder single-action top drive back-up tong which characterized in that: comprises two pliers bodies (1);
two pistons (4) are arranged and are respectively arranged in the two clamp bodies (1), and the two pistons (4) can slide oppositely under the action of hydraulic pressure;
two supports (5) are arranged and are respectively fixed on one side of the two pistons (4) close to each other;
the two support seats (5) are provided with a plurality of clamp teeth (6) at one side close to each other, and the drill rod is clamped by the two support seats (5) through the clamp teeth (6);
the springs are provided with a plurality of springs and respectively act on the two pistons (4), and are used for pushing the two pistons (4) to reset when the hydraulic pressure stops acting on the pistons (4);
the horn mouth (2) is arranged at the bottom of the pliers body (1), the horn mouth (2) is composed of two single-body parts (21), the single-body parts (21) are horn-shaped semi-rings, and the two single-body parts (21) are respectively positioned at the bottoms of the pliers bodies (1);
the fixed semi-rings (9) are provided with two fixed semi-rings and are respectively fixed at the bottoms of the two clamp bodies (1);
the two connecting half rings (22) are arranged and are respectively fixedly connected to the tops of the two single pieces (21), and the connecting half rings (22) are connected to the clamp body (1) through bolts;
the outer sides of the two fixed semi-rings (9) are fixedly connected with a limit semi-ring (91);
the annular grooves (222) are formed in the side, close to each other, of each of the two connecting half rings (22), when the tops of the connecting half rings (22) are attached to the bottom of the clamp body (1), the annular grooves (222) are aligned with the limiting half rings (91), and when the two connecting half rings (22) are attached together to form a complete ring, the two limiting half rings (91) are inserted into the two annular grooves (222) respectively.
2. The dual-cylinder single-acting top drive back-up wrench as claimed in claim 1, wherein: the auxiliary plates (8) are fixedly connected to the outer sides of the half connecting rings (22), each half connecting ring (22) is provided with at least one auxiliary plate (8), and when the half connecting rings (22) are fixed to the bottom of the clamp body (1), the auxiliary plates (8) are attached to the bottom of the clamp body (1);
each auxiliary plate (8) corresponds to one supporting plate (82), the supporting plates (82) are arranged at the bottom of the pliers body (1), when the two connecting half rings (22) are connected to the bottom of the pliers body (1) to form a complete circular ring, the supporting plates (82) are attached to the bottom of the auxiliary plates (8) to support the auxiliary plates (8), and the supporting plates (82) are located at one ends, far away from the connecting half rings (22), of the auxiliary plates (8).
3. The dual-cylinder single-acting top drive back-up wrench as claimed in claim 2, wherein: the auxiliary plate (8) is provided with an abdicating groove (81), the supporting plate (82) can penetrate through the abdicating groove (81), and when the supporting plate (82) penetrates through the abdicating groove (81), the connecting semi-ring (22) is positioned on one side of the limiting semi-ring (91) departing from the fixed semi-ring (9);
when the two connecting half rings (22) are connected to the bottom of the clamp body (1) to form a complete ring, the abdicating groove (81) is positioned on one side of the supporting plate (82) close to the connecting half rings (22).
4. The dual-cylinder single-acting top drive back-up wrench as claimed in claim 3, wherein: the outer side of the connecting half ring (22) is fixedly connected with an arc-shaped plate (221), and the arc-shaped plate (221) can be fixed to the bottom of the clamp body (1) through bolts.
5. The dual-cylinder single-acting top drive back-up wrench as claimed in claim 1, wherein: a first containing cavity (12) is arranged in each pliers body (1), and a second containing cavity (13) is arranged on one side, close to each other, of the two first containing cavities (12) of the two pliers bodies (1);
the piston (4) comprises a large-diameter section (41) which is arranged in the first accommodating cavity (12);
the small-diameter section (42) penetrates through the second accommodating cavity (13), and the support (5) is fixed at one end, far away from the large-diameter section (41), of the small-diameter section (42);
big footpath section (41) are separated first chamber (12) of holding for keeping away from hydraulic pressure chamber (121) of support (5) and chamber (122) that resets that is close to support (5), and spring (7) set up in chamber (122) that resets, and the both ends of spring (7) are supported tightly respectively on big footpath section (41) are close to the inner wall of minor diameter section (42) one end and first cavity one end near second cavity one end.
6. The dual-cylinder single-acting top drive back-up wrench as claimed in claim 5, wherein: the first accommodating cavity (12) and the second accommodating cavity (13) are both set to be circular cavities, the two first accommodating cavities (12) and the two second accommodating cavities (13) are coaxially arranged, and the diameter of the first accommodating cavity (12) is larger than that of the second accommodating cavity (13); the large-diameter section (41) is a cylinder which is coaxial with the first accommodating cavity (12) and has the same diameter, and the small-diameter section (42) is positioned on a cylinder which is coaxial with the second accommodating cavity (13) and has the same diameter.
7. The dual-cylinder single-acting top drive back-up wrench as claimed in claim 6, wherein: the plurality of springs (7) are arranged around the circumferential direction of the second accommodating chamber (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221144110.1U CN217462069U (en) | 2022-05-12 | 2022-05-12 | Double-cylinder single-action top drive back-up wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221144110.1U CN217462069U (en) | 2022-05-12 | 2022-05-12 | Double-cylinder single-action top drive back-up wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217462069U true CN217462069U (en) | 2022-09-20 |
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ID=83274556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221144110.1U Active CN217462069U (en) | 2022-05-12 | 2022-05-12 | Double-cylinder single-action top drive back-up wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217462069U (en) |
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2022
- 2022-05-12 CN CN202221144110.1U patent/CN217462069U/en active Active
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