CN2333822Y - Sucker rod make-up device - Google Patents

Abstract

The utility model relates to a tool which is used on an oil pumping machine well of an oil field, particularly an oil pumping rod make-up device. The oil pumping rod make-up device is composed of three large mechanisms of a clamping mechanism, a transmission mechanism, and a fixing mechanism. Due to the fact that a worm wheel and worm mechanism with a self-locking function is adopted by a system, oil pumping rods are effectively made up. The possibility that a crank is reversely beaten back can be fundamentally avoided on the basis of the consideration of a safety factor and make-up convenient performance, and thus, the oil pumping rod make-up device is very safe. The oil pumping rod make-up device is portable and flexible. The oil pumping rod make-up device can be operated by one people. When a draw rod at the bottom is not used, the draw rod can be pushed back into a draw rod cylinder, the volume of the oil pumping rod make-up device is reduced, and the oil pumping rod make-up device is convenient to carry.

Description

The sucker rod make-up device

The utility model relates to the instrument of the aboveground use of a kind of oil-field oil pumper, particularly a kind of sucker rod make-up device.

A very important job is exactly aboveground make-up in the oilfield regular maintenance, and promptly sucker rod gets loose at somewhere, down-hole screw thread, and tool using screws the screw thread that gets loose again on the ground, the process of Here it is make-up.Traditional make-up method is to use box spanner to twist polished rod at well head now, thereby reach the purpose of make-up, because the place that screw thread gets loose may occur in any position, if dropout place occurs in hundreds of rice, down-hole, sucker rod rubs with tubing wall owing to action of gravity bends, and the influence of the moment of friction of screw thread itself, the required torsional moment of make-up will be very big, and the detorsion moment that produces on the sucker rod also will be very big.If this moment make-up personnel box spanner tight or hold incessantly, box spanner will at once instead be returned nextly so, and human casualty accident very easily takes place.

The purpose of this utility model is to provide a kind of sucker rod make-up device, based on the consideration of safety factor and make-up convenience, can fundamentally avoid the anti-possibility of returning of crank, thereby be foolproof.

The purpose of this utility model is to realize like this, it is made of three great institutions, clamp mechanism, transmission mechanism, fixed mechanism, mainly comprise anchor clamps (1), clamping fixture seat (2), ball (3), pressure cap (4), ramp (5), lower house (6), gear shaft (7), worm tooth wheel shaft (8), gear shaft (9), clamping nut (10), axle (11), gear (12), dowel hole (13), gear (14), clamping nut (15), bolt hole (16), gear shaft (17), upper shell (18), gland (19), spring (20), column pin hole (21), braking pin-and-hole (22), sunk screw (23), opening gear ring (24), bolt (25), clamping nut (26), worm gear (27), gear (28), handle (29), bolt (30), pressure cap (31), ball seat (32), drag link ball (33), pull bar tube (34), pull bar (35), rod head (36), cross pin (37), bolt hole (38), clip (39), bolt hole (40), flange clamp seat (41) is formed.

Clamp mechanism mainly is made up of anchor clamps (1), clamping fixture seat (2), flange clamp seat (41) ball (3), ramp (5), opening gear ring (24), mainly works to clamp sucker rod.

Transmission mechanism: mainly by opening gear ring (24), intermediate filtered gear and following two mechanisms form (1) self-locking mechanism: worm gear (27), worm screw (2).

Speed increasing mechanism: mainly comprise big pinion and gear shaft that several are used to raise speed.

Fixed mechanism: mainly comprise pull bar (35), pull bar tube (34), drag link ball (33), ball seat (32) and clip (39) are formed.

Because it is 3 ° 13 ' worm gear, worm mechanism that this system has adopted helical angle, (helical angle less than 3 ° 30 ' the auto-lock function that has) thereby can realize self-locking, even crank stops to any position, can not reverse, and the clip of fuselage by the bottom is fixed on the well head, make fuselage also can instead not return, guaranteed the safety of system.

Worm gear, worm mechanism are too severe to system's reduction of speed, so adopted speed increasing mechanism to come hoisting velocity.Opening gear end and crank end speed ratio are 1: 8.94, and torque ratio is 3.5: 1.

This cover system has adopted worm gear, the worm mechanism with auto-lock function, with make-up device polished rod is directed into the open centre part from opening portion, and make-up device is sitting on the well head packing box.Four pull bars (35) of make-up device bottom are pulled out from pull bar tube (34), rod head has clip (39), adjust pull bar and the (acting in conjunction of drawhead and universal coupling of clip direction, make clip have any degree of freedom) clip on the pull bar (35) is buckled together respectively, they are fixed on the place, thin footpath of well head gate with bolt, thereby make-up device and well head are fixed together, banking pin is inserted among the banking pin Confucius (22), make the flange clamp seat (41) of make-up device fixing, do not rotate with opening gear ring (24) with upper shell (18).Rotate crank (dextrorotation) then, making between opening gear ring and the flange clamp seat has relative motion, thereby the roller ball (3) of clamping fixture seat (2) is moved along ramp (5), moves till clamping polished rod to the center thereby promote clamping fixture seat (2).At this moment should extract banking pin, be rotated further crank, treat that anchor clamps are able to eat after certain load, in the column pin hole on this moment gland, opening gear ring and flange clamp seat are fixed together, get out of the way ability to speak wheel rim drive flange clamp seat, polished rod rotates together.The flange clamp seat also moves axially downwards (screw thread transmission) when rotating; The pitch of sucker rod screw thread is consistent with the pitch of flange clamp seat, to guarantee the amount of feeding of polished rod at axial direction.This make-up device is 60mm at the once maximum amount of feeding of axial direction, if the make-up amount is bigger, can divides several times and carry out.The effect of pin mainly is to make between opening gear ring and the flange clamp seat relative motion can not be arranged again, so that moving back when button flange clamp seat and the opening gear ring rotation that is fixed together; In addition, it also bears a part of load when make-up.

With the counter-rotating of make-up device crank, the torsional moment on the sucker rod can be eliminated, to treat to extract pin after the moment of torsion disappearance of effect on it, two clamping fixture seats automatically reset to original state under the effect of its two back-moving springs in bottom (20).(require the screw thread running part of flange clamp seat and lower house must rotate flexibly, frictional force is very little), thus sucker rod unclamped, sucker rod can be taken out.If one time the make-up amount is not enough, can be right so repeatedly, until meeting the requirements of the amount of feeding.

The power transmission route is: crank drives axle (11) rotation, axle (11) drives gear wheel (12) and rotates, driving pinion (9) again rotates, cause that gear (14) rotates, drive the pinion rotation on the worm tooth wheel shaft, driving worm screw (8) rotates, and--------worm gear circle (24)--clamping fixture seat (41)---clamping fixture seat (2), anchor clamps (1) rotate gear shaft (7) worm gear (28) worm gear (27), rotate thereby drive sucker rod.

This cover system is owing to adopted worm gear, the worm mechanism with auto-lock function, make the sucker rod make-up effectively, based on the consideration of safety factor and make-up convenience, can fundamentally avoid the anti-possibility of returning of crank, thereby be foolproof, the utility model, light and flexible, a people can operate, and the pull bar of bottom the time spent can not push back in the pull bar tube, reduced volume, easy to carry.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the A-A view of the utility model Fig. 1.

Further specify below in conjunction with accompanying drawing.

Shown in: the upper shell 18 of machine and lower house 16 are the bases that hold whole inner body, wherein a bossing is arranged is threaded block to lower house 16, it is connecting flange clamp seat 41, and flange clamp seat 41 relies on the screw thread of its underpart to be connected with threaded block, and can freely rotate thereon.Two clamping fixture seat holes are arranged at flange clamp seat 41 tops, are used for holding two clamping fixture seats 2, and two anchor clamps 1 are installed on the clamping fixture seat, and machine clamps and turn sucker rod by these two anchor clamps.And the also pressured cap 4 of clamping fixture seat 1 linking two roller balls 3, and it can slide along the slope on ramp 5, draws close to the center thereby can promote anchor clamps 1 when flange clamp seat 41 rotates counterclockwise, thereby clamps sucker rod, and drive sucker rod and rotate.

The track of one section little projection is arranged at the bottom of clamping fixture seat 2, can slidably reciprocate to the center along the rail groove of flange clamp seat, and the forefront of the rail groove of flange clamp seat also has one section projection, the spring 20 that between these two sections projectioies, is holding a pressurized so, rely on the effect of this spring 20, can make flange clamp seat and clamping fixture seat and anchor clamps etc. get back to original state automatically.

Ramp is fixed on opening gear ring 24 inside, two symmetric arrangement.Being shaped as of opening gear ring, top are columniform cylinder bodies, and its inside is holding flange clamp seat 41 and ramp 5.The bottom is a gear that has the gear teeth.Going up most the middle part also has protruding track with the top that sunk screw is connecting end cap 19,19, can rotate along the rail groove of upper shell.The track of the projection on foot and the lower house is connected, can be along the orbit rotation of lower house.So both fixed opening gear ring 24, and can make its rotation again.Its right part has been opened a mouth that 40mm is wide from top to bottom again, so that sucker rod is entered, the opening gear ring is also so gain the name (upper and lower casing and end cap 19, flange clamp seat also have this mouthful). Gear shaft 7 and 17 is two identical gear shafts, only the gear position of gear shaft 7 than 17 higher.Their the right (referring to vertical view) all are connected with the gear of a bite gear wheel rim 24 bottoms.And left end connects with two identical gears about in the of 28 respectively.27 is a worm gear, and they all are connected on the vertical pivot by flat key.And worm gear is connected with worm screw on the worm tooth wheel shaft 8, and the gear on it is connected with gear wheel 14 on the gear shaft 9 again, and the pinion on the gear shaft 9 is connected with gear wheel on the axle 11 again.Axle 11 parts of stretching out housing are connecting crank.

The structure of the pull bar part of lower house bottom is similar to television antenna a bit, and pull bar 35 can arbitrarily rotate around drag link ball 33, and pull bar 35 can pull out from pull bar tube 34, so its length is adjustable, to adapt to different occasions.The effect of the part of rod head is exactly a universal joint shaft knot, and it has two degree of freedom, adds the degree of freedom of drag link ball, makes the clamp 39 of head that any degree of freedom can be arranged, and upper and lower casing relies on several bolts 16 of circle to link together.And rely on alignment pin 13 to realize the location, wherein a braking pin-and-hole 22 is arranged at upper shell top, flange clamp seat 41 also has on braking Xiao hole 22 end caps 19 a strip hole is arranged, so that banking pin can be inserted in the braking pin-and-hole of flange clamp seat by it, a column pin hole 21 is arranged on the end cap 19, when treating that anchor clamps just in time clamp sucker rod, this pin-and-hole is the column pin hole 21 on the flange clamp seat just in time, thereby makes the opening gear ring drive the rotation of flange clamp seat.

Claims (1)

1, a kind of sucker rod make-up device, it is made of three great institutions, clamp mechanism, transmission mechanism, fixed mechanism, it comprises anchor clamps (1), clamping fixture seat (2), ball (3), pressure cap (4), ramp (5), lower house (6), gear shaft (7), worm tooth wheel shaft (8), gear shaft (9), clamping nut (10), axle (11), gear (12), dowel hole (13), gear (14), clamping nut (15), bolt hole (16), gear shaft (17), upper shell (18), gland (19), spring (20), column pin hole (21), braking pin-and-hole (22), sunk screw (23), opening gear ring (24), bolt (25), clamping nut (26), worm gear (27), gear (28), it is characterized in that: ramp (5) is to be fixed on two inner symmetric arrangement of opening gear ring (24), the top that is shaped as of opening gear ring (24) is a columniform cylinder body, its the inside is holding flange clamp seat (41) and ramp (5), the bottom is a gear (28) that has the gear teeth, go up most the middle part and connecting end cap (19) with sunk screw, the track of projection is arranged at the top of end cap (19).

Images