CN211439737U - Multifunctional back-to-back dead wrench - Google Patents

Abstract

The utility model belongs to oil field well head flange extracting tool field especially relates to a multi-functional spanner of can dying by oneself, including the spanner body of dying, the front end of spanner body of dying be the wrench head, the rear end is the hammering handle, still includes the back of the body piece and prevents falling locking device, the front end of back of the body piece welding at the hammering handle, prevent falling locking device including pressing handle and locking thimble, pressing handle middle part articulate the side at hammering handle front end through the round pin axle, pressing handle's front end can contact with the wrench head side, open the wrench head side of contact department has the through-hole, the one end of locking thimble slides and passes the through-hole, the other end fixed connection of locking thimble is at pressing handle's front end, pressing handle's rear end can contact with the hammering handle, presses and installs the torsional spring between pressing handle's rear end and the hammering handle. The utility model provides a when dismouting well head flange, do not have professional instrument, cause the extravagant problem of manpower and materials, the utility model discloses use manpower sparingly, promoted work efficiency.

Description

Multifunctional back-to-back dead wrench

Technical Field

The utility model belongs to oil field well head flange extracting tool field especially relates to a multi-functional can carry on one's back dead spanner.

Background

The disassembly and assembly of the flange bolt of the wellhead is one of the jobs which are required to be met in various posts of an oil field, and particularly, the disassembly and assembly of the wellhead is one of the jobs which must be met in the underground operation construction. Because there is not special instrument at dismouting well head in-process, there are a lot of drawbacks and problems in making the dismouting of well head bolt. Mainly comprises the following steps: firstly, two persons are needed to disassemble and assemble the wellhead, one person rotates the nut at one end of the bolt, the other person drives back tongs (to prevent the nut at the other end of the bolt from rotating), and the disassembly and assembly are completed in a matched mode, so that the wellhead disassembly and assembly method is low in labor rate, time-consuming, labor-consuming, poor in effect and capable of influencing the construction progress; secondly, the wrench needs to be held by hand in the process of rotating the nut to prevent the wrench from falling off the nut, then the nut is detached in a hammering mode by a hammer, and the hammering easily causes hand-pounding or other safety accidents; the existing back-up tong is difficult to be deadly knocked or easy to fall off, so that the wellhead dismounting efficiency is low.

SUMMERY OF THE UTILITY MODEL

For solving the problem in the background art, the utility model provides a multi-functional can carry on one's back dead spanner, the utility model discloses alleviate staff intensity of labour, use manpower sparingly, reduce the potential safety hazard, improve the efficiency of construction.

The utility model provides a technical scheme is: a multifunctional back-to-back dead wrench comprises a dead wrench body, wherein the front end of the dead wrench body is a wrench head, the rear end of the dead wrench body is a hammering handle, the multifunctional back-to-back dead wrench further comprises a dead back block and an anti-falling locking device, the dead back block is fixedly welded on the hammering handle close to one end of the wrench head, the dead back block is perpendicular to the plane of the wrench head, the anti-falling locking device comprises a pressing handle and a locking ejector pin, the middle part of the pressing handle is hinged to the side face of the front end of the hammering handle through a pin shaft, the front end of the pressing handle can be in contact with the side face of the wrench head, a through hole is formed in the side face of the wrench head at the contact position, one end of the locking ejector pin slides through the through hole, the other end of the locking ejector pin is fixedly connected to the front end of the pressing handle, the locking ejector pin can axially move along with the rotation of the pressing handle, the rear end of the pressing handle has a tendency of being far away from the hammering handle under the elastic action of the torsion spring; strong magnetic sheets are uniformly and fixedly arranged on the wrench head at one side of the back dead block in the circumferential direction.

The locking thimble structure is characterized in that an opening groove is formed in the length direction of the front end of the pressing handle, a reducing section is processed at one end of the locking thimble, and the reducing section is clamped into the opening groove, so that the locking thimble can generate axial displacement along with the pressing handle, and the other end of the locking thimble is processed into a cone tip shape.

And reinforcing ribs are welded at the welding positions of the bottom of the dead back block and the hammering handle.

The utility model has the advantages that:

at the dismouting in-process of well head flange, use the utility model discloses compare with using ordinary dead spanner, have following beneficial effect: firstly, the utility model can complete the work of the screw shackle and the tightening of the well head by a single person, thereby saving the labor cost and reducing the influence of insufficient space on the work of two persons; secondly, the wrench cannot fall off the nut, so that the wrench does not need to be held by hands, the accident of hand injury of workers is completely avoided, and the hand strength of the workers can be completely put on the hammer, so that larger hammering force can be applied, and the working efficiency is greatly improved; and thirdly, the utility model discloses processing is easy, at the bottom of the required precision, and the cost of manufacture is low, especially adapted using widely.

Drawings

Fig. 1 is a schematic elevation structure of the present invention.

Fig. 2 is a schematic elevation structure of the present invention.

Fig. 3 is a plan view of the present invention.

In the figure: 1-hammering handle, 2-spanner head, 3-dead back block, 4-pressing handle, 5-locking thimble, 6-torsion spring and 7-strong magnet.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

This embodiment is including dying the spanner body, the front end of dying the spanner body be wrench 2, the rear end is hammering handle 1, this embodiment still includes the back of the body piece 3 and prevents falling locking device, the back of the body piece 3 that means is fixed back of the body piece that dies, the fixed welding of back of the body piece 3 that dies on being close to hammering handle 1 of 2 one ends of wrench, the back of the body piece 3 that dies is perpendicular with 2 planes in wrench place, when 2 covers on the nut of well head flange as wrench, the back of the body piece 3 that dies this moment just in time supports and leans on at the flange outward flange. When the nut of rotating upper end, in case the bolt is followed and is rotated and drive the lower extreme nut and rotate, if like using ordinary spanner in the past, then ordinary spanner also can follow the bolt and rotate, hardly dies through the manpower back of the body, and this is exactly that it hardly dies to be said to be equipped with pincers spanner, when using the utility model discloses afterwards, the back of the body piece 3 that dies supports and leans on the outward flange that leans on at the well head flange, and the motion of restriction spanner is guaranteed that the nut of carrying on the back does not take place the displacement. The anti-falling locking device comprises a pressing handle 4 and a locking thimble 5, the middle part of the pressing handle 4 is hinged on the side surface of the front end of a hammering handle 1 through a pin shaft, the front end of the pressing handle 4 can be contacted with the side surface of a wrench head 2, the side surface of the wrench head 2 at the contact part is provided with a through hole, one end of the locking thimble 5 slides to pass through the through hole, the front end of the locking thimble 5 is processed into a conical tip shape which is contacted with the outer edge of a nut, the rear end of the locking thimble 5 is fixedly connected with the front end of the pressing handle 4, the locking thimble 5 axially moves along with the rotation of the pressing handle 4, the rear end of the pressing handle 4 can be contacted with the hammering handle 1, a torsion spring 6 is arranged between the rear end of the pressing handle 4 and the hammering handle 1, the rear end of the pressing handle 4 has a tendency of being far away from the hammering handle 1 under the elastic force of the, keep certain locking force, prevent to break away from with the nut to use the utility model discloses no longer need hand spanner when dismantling the well head, avoid the occurence of failure that workman's hand hammer wounded. The wrench head 2 on one side of the back dead block 3 is evenly and fixedly provided with the strong magnetic sheet 7 in the circumferential direction, and the strong magnetic sheet 7 is adsorbed with the flange plane to prevent falling off.

The front end of the pressing handle 4 is provided with an opening groove in the length direction, one end of the locking thimble 5 is provided with a reducing section, and the reducing section is clamped into the opening groove, so that the locking thimble 5 can generate axial displacement along with the pressing handle 4.

The welding department of the bottom of the dead back block 3 and the hammering handle 1 is welded with a reinforcing rib, so that the dead back block 3 is further reinforced, and the forced deformation is avoided.

The utility model discloses a theory of operation: a locking thimble 5 of the anti-falling locking device is contacted with the outer edge of the nut under the action of elasticity and keeps a certain locking force to prevent the anti-falling locking device from being separated from the nut; the strong magnetic sheet 7 is adsorbed with the flange plane to prevent falling off; the dead back block 3 contacts with a wellhead flange to limit the movement of a wrench when the bolt is unloaded, so that the back nut is prevented from displacement, and the smooth disassembly of the bolt is realized.

The utility model discloses an operation process is: the pressing handle 4 of the anti-falling locking device is pressed down, the dead wrench body is sleeved on a wellhead nut, the dead back block 3 is abutted against the edge of a wellhead flange plate, and the pressing handle 4 of the anti-falling locking device is loosened to complete the installation of the multifunctional backpack type dead wrench body. The locking device is prevented falling by unloading the pine after use and is taken out the utility model discloses can.

The utility model discloses have different usage in the occasion of difference, both can regard as the formula of can dying to be equipped with pincers (spanner) and use and also can regard as ordinary spanner to die to use by the back of the body. Both can place on the last flange face of well head flange pair, also can place on the flange face down, owing to have strong magnetic sheet 7 and prevent falling locking device's protection, guarantee can not drop.

Claims (3)

1. The utility model provides a multi-functional spanner of can dying on back, includes the spanner body of dying, the front end of spanner body of dying be wrench end (2), the rear end is hammering handle (1), its characterized in that: still include dead back of the body piece (3) and prevent falling locking device, dead back of the body piece (3) fixed welding on hammering handle (1) near wrench (2) one end, dead back of the body piece (3) and wrench (2) place plane perpendicular, prevent falling locking device including pressing handle (4) and locking thimble (5), pressing handle (4) middle part articulate the side at hammering handle (1) front end through the round pin axle, the front end of pressing handle (4) can contact with wrench (2) side, wrench (2) side of contact department is opened there is the through-hole, the one end of locking thimble (5) slide and pass the through-hole, the other end fixed connection of locking thimble (5) is at the front end of pressing handle (4), axial displacement takes place along with the rotation of pressing handle (4) locking thimble (5), the rear end of pressing handle (4) can contact with hammering handle (1), a torsion spring (6) is arranged between the rear end of the pressing handle (4) and the hammering handle (1), and the rear end of the pressing handle (4) has a tendency of being far away from the hammering handle (1) under the action of the elasticity of the torsion spring (6); strong magnetic sheets (7) are uniformly and fixedly arranged on the wrench head (2) at one side of the dead back block (3) in the circumferential direction.

2. A multi-function back-to-back deadable wrench as defined in claim 1, further comprising: pressing handle (4) front end length direction on open and to have the opening groove, locking thimble (5) one end processing have the undergauge section, the undergauge section card go into the opening groove in to make locking thimble (5) can follow pressing handle (4) and produce axial displacement, the other end of locking thimble (5) is processed into the awl point form.

3. A multi-function back-to-back deadable wrench as defined in claim 1, further comprising: and reinforcing ribs are welded at the welding positions of the bottom of the dead back block (3) and the hammering handle (1).

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