Riding wheel mechanism on auxiliary machine for repairing drill rod

Abstract

A riding wheel mechanism on an auxiliary machine for drill rod repair comprises a mounting frame, and a hinged shaft is mounted on the front side of the mounting frame; a supporting bracket is arranged on the mounting frame, a wheel seat is arranged above the supporting bracket, and a riding wheel is arranged in the middle of the wheel seat; a servo motor is arranged on the rear side of the mounting frame, and the lower end of the servo motor is in transmission connection with the worm through a worm and gear speed reducer; a rocker and a rocker arm are respectively connected outside the hinged shaft; the rocker is connected with a first connecting rod through a pin shaft; the first connecting rod is connected with a worm through a pin shaft; the rocker arm is connected with a second connecting rod through a pin shaft, and the second connecting rod is connected below the supporting bracket; a guide rod is arranged below the supporting bracket, a guide sleeve is embedded in the mounting frame, and the guide rod penetrates through the guide sleeve. According to the utility model, the defects in the prior art are overcome, the rear part of the drill rod can be stably supported, the swing and vibration of the drill rod during rotation can be effectively reduced, meanwhile, the requirement of frequent replacement of the drill rod specification can be automatically met, unsafe factors caused by manual intervention are reduced, the labor intensity of operators is reduced, and the machining precision and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field especially relates to petroleum drill rod repair equipment, concretely is a kind of supporting wheel mechanism on auxiliary machine for drill rod repair. BACKGROUND

[0002] When oil drilling, petroleum drill rod is connected together by inner and outer taper pipe thread one by one.Due to the stress of drill rod during drilling, high temperature, and the scouring and friction of high-pressure mud, the shoulder surface and thread tooth shape of the front end of drill rod are easily deformed, worn or partially damaged, thereby causing the whole drill rod to be scrapped.In the prior art, the characteristics of taper thread are utilized to machine and repair thread tooth shape, so that drill rod is repeatedly used.

[0003] During the repair process of petroleum drill rod, the front end of petroleum drill rod needs to be rotated and processed on a lathe.However, due to the length and weight of drill rod, and the rotation speed during processing, drill rod often produces large swing and vibration, which not only affects the processing precision, affects the repair quality and efficiency, but also can damage the lathe;in addition, due to the multiple specifications of petroleum drill rod, the repair specification needs to be frequently replaced according to the on-site demand during the repair process, and worker intervention needs to be minimized to reduce the unsafe factors of operation.

[0004] Therefore, an institution capable of stably supporting the rear part of petroleum drill rod is needed, so that it can not only reduce the swing and vibration of drill rod, but also meet the requirement of frequent replacement of drill rod specification without manual intervention during repair. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a supporting wheel mechanism on auxiliary machine for drill rod repair, which overcomes the deficiencies of the prior art, can stably support the rear part of petroleum drill rod, can effectively reduce the swing and vibration of drill rod during rotation, can realize the requirement of automatic adaptation to frequent replacement of drill rod specification, can reduce the unsafe factors caused by manual intervention, can reduce the labor intensity of operating personnel, and can improve the processing precision and efficiency.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions:

[0007] The application discloses a roller mechanism on a drilling rod repairing auxiliary machine, which comprises a mounting frame fixedly installed on a rack, a hinge shaft horizontally installed on the front side of the mounting frame through a bearing seat, a supporting bracket arranged above the mounting frame, a wheel seat installed above the supporting bracket, two rollers rotatably connected in parallel in the middle of the wheel seat, and the central axes of the two rollers being parallel, a servo motor arranged on the rear side of the mounting frame, a worm gear reducer installed at the lower end of the servo motor, an output shaft of the servo motor connected with an input shaft of the worm gear reducer, a worm wheel and a worm arranged in the worm gear reducer, an output shaft of the worm gear reducer connected with the worm wheel, and threads on the worm wheel and the worm being engaged, wherein the worm wheel rotates in the forward and reverse directions to drive the worm to move forward and backward.

[0008] One end of the rocker and one end of the rocker arm are fixedly connected to the outer surface of the hinge shaft; the other end of the rocker is connected with one end of the first connecting rod through a pin shaft; the other end of the first connecting rod is connected with the front end of the worm through a pin shaft; the other end of the rocker arm is connected with one end of the second connecting rod through a pin shaft; a pin shaft support is installed on the lower surface of the supporting bracket; a channel hole penetrating through the mounting frame in the up-down direction is formed in the middle of the mounting frame; the other end of the second connecting rod passes through the channel hole and is connected with the pin shaft support through a pin shaft.

[0009] A guide rod is vertically installed on the lower surface of the supporting bracket; a guide sleeve is fixedly embedded in the mounting frame; and the guide rod passes through the guide sleeve and forms a sliding pair with the guide sleeve.

[0010] Preferably, the wheel seat comprises two parallel supporting plates and two parallel supporting plates, the left and right ends of the two supporting plates are fixedly connected with the two supporting plates respectively, the two rollers are installed side by side between the two supporting plates, the front and rear sides of the two supporting plates below are both provided with buffer springs, and the lower ends of the buffer springs are installed on the upper surface of the supporting bracket.

[0011] Preferably, a supporting shaft is rotatably connected with the middle of the roller through a bearing, and the two ends of the supporting shaft are fixedly installed on the two supporting plates through locking blocks.

[0012] The utility model provides a kind of supporting wheel mechanism on auxiliary machine for drill pipe repair.It has the following beneficial effects: by the control servo motor operation, in turn by the transmission effect of worm gear reducer, to drive worm front and back movement, in turn by the transmission effect of first connecting rod, to drive rocker to rotate, and then synchronously drive hinge shaft to rotate, in turn by hinge shaft drive rocker arm up and down rotation, to by the transmission effect of second connecting rod, to drive the entire support bracket lifting, in turn drive two supporting wheels can rise specified position, to support the petroleum drill pipe of cylinder between two supporting wheels.And since two supporting wheels are rotatably connected on wheel seat, when petroleum drill pipe is in the process of rotating repair, two supporting wheels can also rotate, in turn reach auxiliary rotation support effect, to effectively reduce the swing and vibration of petroleum drill pipe in rotating repair;And by the servo control of servo motor, to realize the accurate control adjustment of the moving height of two supporting wheels, to meet the support needs of different specifications petroleum drill pipe. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the description of prior art.

[0014] Fig. 1 The structural schematic diagram of the utility model;

[0015] Fig. 2 The sectional structure schematic diagram of the utility model;

[0016] Fig. 3 The local structure schematic diagram of the utility model;

[0017] Explanation of reference numerals in the drawing:

[0018] 1, mounting frame;2, bearing seat;3, hinge shaft;4, support bracket;5, wheel seat;6, supporting wheel;7, servo motor;8, worm gear reducer;9, worm;10, rocker;11, rocker arm;12, first connecting rod;13, second connecting rod;14, pin shaft support;15, buffer spring;16, support shaft;17, locking block;18, guide rod;19, guide sleeve;51, support plate;52, supporting plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following will combine the drawing in the utility model, and the technical scheme in the utility model is clearly and completely described.

[0020] Example one, such as Figs. 1 to 3As shown, a kind of auxiliary machine on the roller mechanism for drill pipe repair, including installation frame 1, installation frame 1 is fixedly installed on the frame, the front side of installation frame 1 is horizontally installed with hinged shaft 3 by bearing seat 2;Supporting bracket 4 is provided on the top of installation frame 1, wheel seat 5 is installed on the top of supporting bracket 4, two supporting rollers 6 are rotatably connected in the middle of wheel seat 5, and the central axes of the two supporting rollers 6 are parallel;Servo motor 7 is provided on the rear side of installation frame 1, worm gear reducer 8 is installed at the lower end of servo motor 7, the output shaft of servo motor 7 is connected with the input shaft of worm gear reducer 8, worm gear reducer 8 is provided with worm gear and worm 9, the output shaft of worm gear reducer 8 is connected with worm gear, and the thread on worm gear and worm 9 is engaged, and the forward and reverse rotation of worm gear drives the forward and backward movement of worm 9;

[0021] The outer surface of hinged shaft 3 is fixedly welded with one end of rocker 10 and one end of rocker arm 11 respectively;The other end of rocker 10 is connected with one end of first connecting rod 12 through pin shaft, and the other end of first connecting rod 12 is connected with the front end of worm 9 through pin shaft;The other end of rocker arm 11 is connected with one end of second connecting rod 13 through pin shaft, and pin shaft support 14 is installed on the lower surface of supporting bracket 4;Passage hole is formed in the middle of installation frame 1, and the other end of second connecting rod 13 passes through the passage hole and is connected with pin shaft support 14 through pin shaft.

[0022] Two guide rods 18 are vertically installed on the lower surface of supporting bracket 4, and two guide sleeves 19 are fixedly embedded in installation frame 1, and two guide rods 18 pass through two guide sleeves 19 respectively and form two groups of sliding pairs with two guide sleeves 19 respectively.

[0023] Working principle:

[0024] When the rear part of the petroleum drill pipe needs to be supported by two supporting rollers 6, the operation of servo motor 7 is controlled, so that the worm in the worm gear reducer 8 is driven to rotate forward by the output shaft of servo motor 7;In turn, the worm 9 is driven to move backward by the worm gear;Because the worm 9 and the rocker 10 are connected with the two ends of the first connecting rod 12 through the pin shaft respectively, the first connecting rod 12 is driven to pull the one end of the rocker 10 to move backward;Because the other end of the rocker 10 is welded with the hinged shaft 3, and the hinged shaft 3 is rotatably connected between the two bearing seats 2, the hinged shaft 3 can be rotated counterclockwise by the rocker 10.

[0025] The rotation of the hinge shaft 3 also synchronously drives the rocker arm 11 to rotate upward around the hinge shaft 3, so as to give the second connecting rod 13 an upward lifting force, and then the second connecting rod 13 can drive the support bracket 4 to give an upward lifting force through the transmission action of the second connecting rod 13. Since the guide rod 18 on the lower surface of the support bracket 4 is in sliding connection with the guide sleeve 19, the support bracket 4 can only move up and down, so the rotation of the rocker arm 11 can drive the entire support bracket 4 to move upward, thereby enabling the two supporting wheels 6 in the wheel seat 5 above the support bracket 4 to rise to a specified position, so as to support the cylindrical oil drill rod between the two supporting wheels 6. Since the two supporting wheels 6 are both rotationally connected to the wheel seat 5, the two supporting wheels 6 can also rotate during the rotation repair of the oil drill rod, thereby achieving auxiliary rotation support, so as to effectively reduce the swing and vibration of the oil drill rod during the rotation repair.

[0026] Similarly, when the auxiliary support of the oil drill rod is not needed, or when the middle thickened part of the drill rod needs to be avoided, the servo motor 7 is only needed to be controlled to operate in reverse, and then the transmission action of the worm and gear reducer 8 drives the worm 9 to move forward, and then the first connecting rod 12 drives the rocker 10 to rotate clockwise, thereby synchronously driving the hinge shaft 3 to rotate clockwise, and then the hinge shaft 3 drives the rocker arm 11 to rotate downward, so as to drive the entire support bracket 4 to descend through the transmission action of the second connecting rod 13.

[0027] The entire process only needs to servo control the servo motor 7 to realize the lifting and lowering of the entire support bracket 4, so that the up-and-down movement of the support bracket 4 is more accurate. The two supporting wheels 6 can also achieve auxiliary rotation support, so as to meet the support needs of oil drill rods of different specifications. In addition, since the lower end of the support bracket 4 is connected to the rocker arm 11 through the second connecting rod 13, and the two ends of the second connecting rod 13 are also connected to the support bracket 4 and the rocker arm 11 through pins, the support bracket 4, the second connecting rod 13 and the rocker arm 11 all have a certain angular offset, thereby effectively avoiding the problem that the support bracket 4 is slightly angularly offset due to the gravity of the oil drill rod, and then causing damage to the equipment.

[0028] In the second embodiment, as a further preferred embodiment of the first embodiment, the wheel seat 5 includes two parallel support plates 51 and two parallel supporting plates 52, the left and right ends of the two supporting plates 52 are fixedly connected to the two support plates 51, and the two supporting wheels 6 are installed side by side between the two supporting plates 52. The front and rear sides of the two support plates 51 below are both provided with buffer springs 15, and the lower ends of the buffer springs 15 are installed on the upper surface of the support bracket 4. Four buffer springs 15 are installed between the wheel seat 5 and the support bracket 4, so as to effectively reduce the vibration of the oil drill rod during the rotation repair. In turn, the stability of the auxiliary support of the oil drill rod is further ensured.

[0029] In the third embodiment, as a further preferred solution of the first embodiment, the supporting shaft 16 is rotatably connected to the roller 6 through a bearing, and the two ends of the supporting shaft 16 are fixedly installed on the two supporting plates 52 through locking blocks 17. The supporting shaft 16 can support the roller 6, and because the supporting shaft 16 is rotatably connected to the roller 6 through a bearing, the rotation of the roller 6 is not affected, so that the roller 6 can rotate with the oil drill pipe during the rotation repair process.

[0030] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A roller support mechanism on an auxiliary machine for drill pipe repair, characterized in that: The system includes a mounting frame (1), which is fixedly mounted on a machine frame. A hinge shaft (3) is horizontally mounted on the front side of the mounting frame (1) via a bearing seat (2). A support bracket (4) is provided above the mounting frame (1), and a wheel seat (5) is installed above the support bracket (4). Two rollers (6) are rotatably connected side by side in the middle of the wheel seat (5), and the central axes of the two rollers (6) are parallel. A servo motor (7) is provided on the rear side of the mounting frame (1). A worm gear reducer (8) is installed at the lower end of the servo motor (7). The output shaft of the servo motor (7) is connected to the input shaft of the worm gear reducer (8). The worm gear reducer (8) contains a worm wheel and a worm (9). The output shaft of the worm gear reducer (8) is connected to the worm wheel. The worm wheel meshes with the thread on the worm (9). The worm wheel rotates in both directions, driving the worm (9) to move back and forth. The outer surface of the hinge shaft (3) is fixedly connected to one end of the rocker arm (10) and one end of the rocker arm (11); the other end of the rocker arm (10) is connected to one end of the first connecting rod (12) through a pin, and the other end of the first connecting rod (12) is connected to the front end of the worm gear (9) through a pin; the other end of the rocker arm (11) is connected to one end of the second connecting rod (13) through a pin, and a pin support (14) is installed on the lower surface of the support bracket (4). The mounting frame (1) has a through-hole in the middle, and the other end of the second connecting rod (13) passes through the through-hole and is connected to the pin support (14) through a pin. A guide rod (18) is vertically installed on the lower surface of the support bracket (4), and a guide sleeve (19) is fixedly embedded in the mounting frame (1). The guide rod (18) passes through the guide sleeve (19) and forms a sliding pair with the guide sleeve (19).

2. The roller support mechanism on an auxiliary machine for drill pipe repair according to claim 1, characterized in that: The wheel seat (5) includes two parallel support plates (51) and two parallel support plates (52). The left and right ends of the two support plates (52) are fixedly connected to the two support plates (51) respectively. Two support wheels (6) are installed side by side between the two support plates (52). Buffer springs (15) are installed on the front and rear sides below the two support plates (51). The lower end of the buffer springs (15) is installed on the upper surface of the support support (4).

3. The roller support mechanism on an auxiliary machine for drill pipe repair according to claim 2, characterized in that: The support roller (6) is rotatably connected to a support shaft (16) via a bearing in the middle. The two ends of the support shaft (16) are respectively fixedly installed on two support plates (52) via locking blocks (17).

Images