A iron roughneck spinner

Abstract

The utility model discloses an iron driller screwing buckle device relates to petroleum drilling equipment field. The utility model discloses an iron driller screwing buckle device includes the connecting frame assembly, and the connecting frame assembly back installs a group two jacking spring mechanism, and the inboard of connecting frame assembly is equipped with the bearing, and is matched with screwing buckle device guide rail, and the top of screwing buckle device guide rail is linked with screwing buckle device support, and the screwing buckle device support is U-shaped support, and the back of screwing buckle device support is equipped with control valve group, and both sides front end respectively is equipped with the clamping oil cylinder, and the middle is provided with the waist -shaped sliding slot of through -type, and left screwing buckle wheel, right screwing buckle wheel can along waist -shaped sliding slot synchronous clamping or open.

Description

Technical Field

[0001] This utility model relates to the field of oil drilling equipment, and in particular to a rotary hook for iron drillers. Background Technology

[0002] A spinner is a tool used in oilfield drilling and well workover operations to connect and disconnect drill pipes, drill collars, tubing, casing, and milling sleeves. Its invention has greatly reduced the labor intensity of these processes, improving work efficiency and safety. The spinner is one of the key components of the spinner; its main function is to quickly spin-couple the tubing during the non-flush stage of connection and disconnection. After the quick spin-coupling, the spinner's tongs perform the flushing. Overall, the spinner's rapid spin-coupling speed and maximum torque are key indicators of the spinner's performance, determining the overall efficiency of the equipment.

[0003] According to the different clamping methods, the commonly used iron drill bit twisting devices on the market can generally be divided into three types: V-type clamping, H-type clamping, and parallel clamping. (1) The main feature of the V-type clamping mechanism is that there is a common hinge point on the two supports. The left and right twisting wheel groups are clamped under the action of hydraulic cylinder pulling force and make arc motion with the hinge point as the center. When clamping pipes of different diameters, the twisting wheel group will have a certain offset in the front and back direction. Therefore, it is necessary to set up other mechanisms to compensate for the offset distance. (2) The main feature of the H-type clamping mechanism is that the two supports are connected by a support frame and a hydraulic cylinder is installed on the back side to form a lever mechanism. The left and right twisting wheel groups are clamped under the action of hydraulic cylinder thrust. The twisting wheel group still makes arc motion with the hinge point between the support and the support frame as the center. It will also produce the same offset as the V-type clamping mechanism and a compensation mechanism is required. (3) The main feature of the parallel clamping mechanism is that there is a slide rail between the two supports, and both move in a straight line along the slide rail. When clamping the pipe column, there is no offset in the front and back direction, and no compensation structure is required. However, the mechanism is more complex and the structure is larger in size.

[0004] Each of the three mechanisms has its own advantages and disadvantages. The V-type and H-type structures are relatively simple, but require separate compensation mechanisms. Since the V-type clamps with tension, the required clamping cylinder size is generally larger than that of the H-type structure. The parallel clamping mechanism does not require a compensation structure, but it is complex and bulky. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is to provide a rotary valve that can adapt to pipe columns of different diameters, can automatically center without the need for a separate compensation mechanism, and has a simple structure.

[0006] To achieve the above objectives, this utility model provides a rotary hook for iron drillers, including a connecting frame assembly. A set of two lifting spring mechanisms are installed on the back of the connecting frame assembly. A bearing is provided on the inner side of the connecting frame assembly to match the rotary hook guide rail. The top of the rotary hook guide rail is connected to the rotary hook bracket.

[0007] The rotary buckle bracket is a U-shaped bracket. The back of the rotary buckle bracket is equipped with a control valve group, and the front ends of both sides are equipped with clamping cylinders. A through waist-shaped slide groove is set in the middle. The left and right rotary buckle wheels can clamp or open synchronously along the waist-shaped slide groove.

[0008] The bottom plate of the connecting frame assembly is provided with pin holes and bolt holes, which can fix the entire rotary buckle on the rotary buckle clamp mechanism. The back of the connecting frame assembly is provided with two guide rods, and the lifting spring is installed on the guide rods. The top of the guide rod is provided with a limiting plate.

[0009] Furthermore, each of the two inner sides of the connecting frame assembly is provided with two cylindrical roller bearings. The cylindrical roller bearings are welded and fixed on the square mounting base and matched with the rotary fastener guide rail. The rotary fastener guide rail and the rotary fastener body can slide in the vertical direction. The top of the rotary fastener guide rail is provided with a pin hole and a bolt hole for fixing the rotary fastener bracket.

[0010] Furthermore, the front ends of both sides of the rotary buckle bracket are provided with cylinder mounting seats. The clamping cylinder is connected to the cylinder mounting seats by bolts. The cylinder rod faces inward. The control valve group is provided in the center of the back of the rotary buckle bracket. Support ears are provided on both sides of the back. The support ears rest on the guide rod on the back of the connecting frame assembly.

[0011] Furthermore, the sliding rods on the inner sides of the left-hand and right-hand locking wheels slide left and right in the waist-shaped sliding groove with the help of wear-resistant bushings. Under the action of the control valve group and the clamping cylinder, the left-hand and right-hand locking wheels can move towards or away from the center simultaneously to achieve the function of clamping or releasing the tubing.

[0012] Furthermore, the clamping cylinder is connected to the push rod via a universal ball joint. A thrust pin is provided in the middle of the left-hand and right-hand locking wheels. The thrust pin falls into the push rod hole, thereby transmitting the clamping cylinder force to the left-hand locking wheel assembly and the right-hand locking wheel assembly.

[0013] Furthermore, both the left-hand and right-hand rotating wheel assemblies consist of a hydraulic motor, a roller, a welded bracket, a motor mounting base, a drive head, and a transmission assembly.

[0014] Furthermore, the motor mounting base is fixed in the groove of the welded bracket, the hydraulic motor is connected to the motor mounting base by bolts, the motor drive shaft is inserted into the drive head, and the torque is transmitted through a key. A pair of tapered roller bearings are installed face to face on both sides of the protrusion in the middle of the drive head. The bottom of the motor mounting base is equipped with a skeleton oil seal, and the top is equipped with a threaded pressure ring to press the tapered roller bearings. The bottom of the drive head is connected to the roller, and the torque is transmitted and limited through a pair of hook wedge keys.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) The direct push clamping mechanism of this utility model combines the left and right brackets into a U-shaped bracket. Two clamping cylinders are fixed on both sides of the bracket and directly push the rotating wheel group to clamp and open. The rotating wheel group only makes linear motion and does not produce front-back offset when clamping pipe columns of different diameters.

[0017] (2) This utility model arranges the clamping cylinder on both sides of the bracket, unlike other structures that arrange the cylinder on the rear side, which can significantly shorten the length of the rotary buckle in the front-to-back direction and make the structure simple and compact.

[0018] (3) The weight of the rotating device body is supported by the lifting spring, so that the rotating device can have a certain displacement when it moves vertically with the pipe column, and compensates the thread when rotating quickly to avoid damage to the thread. Attached Figure Description

[0019] Figure 1 This is one of the schematic diagrams of the screw fastener structure of this utility model;

[0020] Figure 2 This is the second schematic diagram of the screw fastener structure of this utility model;

[0021] Figure 3 This is a structural schematic diagram of the connecting frame assembly with lifting spring mechanism of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the rotary buckle guide rail of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the screw fastener bracket assembly of this utility model;

[0024] Figure 6 This is a schematic diagram of the main body of the screw fastener of this utility model;

[0025] Figure 7 This is a top view of the main body of the screw fastener of this utility model;

[0026] Figure 8 This is a cross-sectional schematic diagram of the left and right rotating buckle wheel of this utility model.

[0027] Figure label:

[0028] 1. Connecting frame assembly; 11. Base plate; 12. Guide rod; 13. Limiting plate one; 14. Bolt; 15. Side plate; 16. Cylindrical roller bearing; 17. Square mounting base;

[0029] 2. Lifting spring mechanism;

[0030] 3. Rotary fastener guide rail; 31. Bolt; 32. Pin; 33. Limiting plate two;

[0031] 4. Rotary fastener bracket; 41. Hydraulic cylinder mounting base; 42. Bolt; 43. Support lug; 44. Engineering plastic bushing; 4A. Waist-shaped slide groove;

[0032] 5. Control valve assembly; 6. Clamping cylinder;

[0033] 7. Left-hand rotating retaining wheel; 71. Slide rod; 72. Wear-resistant bushing; 73. Thrust pin; 8. Right-hand rotating retaining wheel; 81. Hydraulic motor; 82. Roller; 83. Welded bracket; 84. Motor mounting base; 85. Drive head; 86. Motor drive shaft; 87. Tapered roller bearing; 88. Skeleton oil seal; 89. Threaded pressure ring; 90. Hook wedge key. Detailed Implementation

[0034] The following description, with reference to the accompanying drawings, illustrates several preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0035] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and this invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, the thickness of some components has been appropriately exaggerated in the drawings.

[0036] A type of iron drill screwdriver, such as Figure 1 As shown in Figure 2: it includes a connecting frame assembly 1, a set of two lifting spring mechanisms 2 installed on the back of the connecting frame assembly 1, a bearing is provided on the inner side of the connecting frame assembly 1, which matches the rotary buckle guide rail 3, and the top of the rotary buckle guide rail 3 is connected to the rotary buckle bracket.

[0037] The rotating buckle bracket 4 is a U-shaped bracket. The back of the rotating buckle bracket 4 is equipped with a control valve group 5, and the front ends of both sides are equipped with clamping cylinders 6 respectively. The middle is equipped with a through waist-shaped slide groove 4A. The left rotating buckle wheel 7 and the right rotating buckle wheel 8 can clamp or open synchronously along the waist-shaped slide groove.

[0038] like Figure 3As shown: The bottom plate 11 of the connecting frame assembly is provided with pin holes and bolt holes, which can fix the entire rotary buckle on the rotary buckle clamp mechanism. The back of the connecting frame assembly is provided with two guide rods 12, the lifting spring 2 is installed on the guide rods 12, and the top of the guide rod is provided with a limiting plate 13, which is fixed to the guide rod 12 by bolts 14.

[0039] Based on the above specific design, two cylindrical roller bearings 16 are provided on the inner side of each of the two side plates 15 of the connecting frame assembly. The cylindrical roller bearings 16 are welded and fixed on the square mounting base 17 and matched with the rotary fastener guide rail 3. The rotary fastener guide rail 3 and the rotary fastener body can slide in the vertical direction.

[0040] like Figure 4 As shown, the top of the rotary knob guide rail 3 is provided with two pins 32 and two sets of bolts 31 for accurately fixing the rotary knob bracket 4. The bottom of the guide rail 3 is provided with a limiting plate 33, which can limit the movement of the guide rail assembly beyond the position limit.

[0041] Based on the specific design described above, such as Figure 5 As shown, the front ends of both sides of the rotary buckle bracket 4 are provided with cylinder mounting seats 41. The clamping cylinder 6 is connected to the cylinder mounting seat 41 by bolts 42. The cylinder rod faces inward. The control valve group 5 is provided in the center of the back of the rotary buckle bracket 4. The two sides of the back are provided with lugs 43. Engineering plastic bushings 44 are installed in the lug holes. The lugs 43 rest on the guide rod 12 on the back of the connecting frame assembly. The weight of the entire rotary buckle is overcome by the lifting spring 2, which can significantly reduce the friction between the lugs 43 and the guide rod 12.

[0042] Based on the specific design described above, such as Figure 6 As shown in Figure 7, the rotating bracket 4 is provided with two sets of through waist-shaped sliding grooves 4A in the middle. The sliding rods 71 ​​on the inner side of the left rotating wheel 7 and the right rotating wheel 8 slide left and right in the waist-shaped sliding grooves 4A with the help of the wear-resistant bushings 72. Under the action of the control valve group 5 and the clamping cylinder 6, the left rotating wheel 7 and the right rotating wheel 8 can move towards or away from the center at the same time to achieve the function of clamping or loosening the tubing.

[0043] Based on the above specific design, the clamping cylinder 6 is connected to the push rod 61 through the universal ball joint. A thrust pin 73 is provided in the middle of the left-hand locking wheel 7 and the right-hand locking wheel 8. The thrust pin 73 falls into the push rod hole, thereby transmitting the force of the clamping cylinder 6 to the left-hand locking wheel assembly and the right-hand locking wheel assembly.

[0044] Based on the above specific design, both the left-hand rotating wheel assembly and the right-hand rotating wheel assembly are composed of a hydraulic motor 81, a roller 82, a welding bracket 83, a motor mounting base 84, a drive head 85, and a transmission component.

[0045] Based on the above specific design, the motor mounting base 84 is fixed in the groove of the welding bracket 83. The hydraulic motor 81 is connected to the motor mounting base 84 by bolts. The motor drive shaft 86 is inserted into the drive head 85 and transmits torque through a key. Tapered roller bearings 87 are installed face-to-face on both sides of the protrusion in the middle of the drive head 85, which can simultaneously bear radial and axial loads. A skeleton oil seal 88 is provided in the groove at the bottom of the motor mounting base 84 to prevent lubricating oil leakage. A threaded pressure ring 89 is provided at the top to press the tapered roller bearings 87, so that the pair of tapered roller bearings 87 have a suitable clearance. The bottom of the drive head 85 is connected to the roller 82 and transmits torque and limits position through a pair of hook wedge keys 90.

[0046] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A steel drill auger, characterized in that: Including the connecting frame assembly, a set of two lifting spring mechanisms are installed on the back of the connecting frame assembly, and a bearing is provided on the inner side of the connecting frame assembly to match the rotary buckle guide rail. The top of the rotary buckle guide rail is connected to the rotary buckle bracket. The rotating buckle bracket is a U-shaped bracket. The back of the rotating buckle bracket is equipped with a control valve group, and the front ends of both sides are equipped with clamping cylinders. A through waist-shaped slide groove is set in the middle. The left and right rotating buckle wheels can clamp or open synchronously along the waist-shaped slide groove.

2. The iron drill auger as described in claim 1, characterized in that: The bottom plate of the connecting frame assembly is provided with pin holes and bolt holes, which can fix the entire rotary buckle on the rotary buckle clamp mechanism. The back of the connecting frame assembly is provided with two guide rods, and the lifting spring is installed on the guide rods. A limit plate is provided at the top of the guide rod.

3. The iron drill auger as described in claim 1, characterized in that: The inner sides of the two side plates of the connecting frame assembly are provided with two cylindrical roller bearings. The cylindrical roller bearings are welded and fixed on the square mounting base and matched with the rotary fastener guide rail. The rotary fastener guide rail and the rotary fastener body can slide in the vertical direction. The top of the rotary fastener guide rail is provided with a pin hole and a bolt hole for fixing the rotary fastener bracket.

4. The iron drill auger as described in claim 1, characterized in that: The front ends of both sides of the rotary buckle bracket are provided with cylinder mounting seats. The clamping cylinder is connected to the cylinder mounting seat by bolts. The cylinder rod faces inward. The control valve group is provided in the center of the back of the rotary buckle bracket. Support ears are provided on both sides of the back. The support ears rest on the guide rod on the back of the connecting frame assembly.

5. The iron drill auger as described in claim 1, characterized in that: The sliding rods on the inner sides of the left-hand and right-hand locking wheels slide left and right in the sliding groove with the help of wear-resistant bushings. Under the action of the control valve group and the clamping cylinder, the left-hand and right-hand locking wheels can move towards or away from the center simultaneously, realizing the function of clamping or releasing the tubing.

6. The iron drill auger as described in claim 5, characterized in that: The clamping cylinder is connected to the push rod via a universal ball joint. A thrust pin is provided in the middle of each of the left and right rotating wheels. The thrust pin falls into the push rod hole, thereby transmitting the clamping cylinder force to the left and right rotating wheel assemblies.

7. The iron drill auger as described in claim 1, characterized in that: Both the left-hand and right-hand rotating wheel assemblies consist of a hydraulic motor, a roller, a welded bracket, a motor mounting base, a drive head, and a transmission assembly.

8. A steel drill auger as described in claim 7, characterized in that: The motor mounting base is fixed in the groove of the welded bracket. The hydraulic motor is connected to the motor mounting base by bolts. The motor drive shaft is inserted into the drive head and the torque is transmitted through a key. A pair of tapered roller bearings are installed face to face on both sides of the protrusion in the middle of the drive head. The bottom of the motor mounting base is equipped with a skeleton oil seal and the top is equipped with a threaded pressure ring to press the tapered roller bearings. The bottom of the drive head is connected to the roller and the torque is transmitted and limited through a pair of hook wedge keys.

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