Pipeline coupling pre-screwing equipment

Abstract

The utility model discloses pre-screwing equipment for a pipeline coupling, which relates to the technical field of pre-screwing equipment for pipelines and comprises a mandrel, a clamping shell is movably arranged at the rear end of the mandrel, a clamping structure is mounted between the clamping shell and the mandrel, and a driving device is fixedly mounted at the rear end of the clamping shell. The driving device comprises a hydraulic pushing mechanism and a gear transmission mechanism, the hydraulic pushing mechanism and the mandrel are located at the same horizontal position, and the hydraulic pushing mechanism and the gear transmission mechanism are installed on the outer side of the hydraulic pushing mechanism; the position of the mandrel is fixed, the front end of the mandrel penetrates through the coupling, then the position of the coupling is fixed, the coupling is prevented from moving up and down and left and right, the clamping shell is pushed to move forwards through the hydraulic pushing mechanism, the clamping structure is clamped on the rear side of the mandrel in the moving process, the clamping shell continues to move forwards, and then the clamping structure is driven to clamp the outer wall of the coupling. And at the moment, the gear transmission mechanism drives the clamping shell to rotate, so that the automatic pre-screwing work of the pipeline and the coupling is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline pre -screwing equipment technical field more specifically relates to pipeline coupling pre -screwing equipment. BACKGROUND

[0002] Petroleum oil pipe, casing and its corresponding coupling are connected through thread, when the oil pipe and casing are produced in the factory, the coupling needs to be screwed to its corresponding oil pipe or casing according to the specified torque, the thread connection first needs to be pre -screwed to the oil pipe or casing, and then be tightened by the screwing machine according to the specified torque, because the pipe body of the oil pipe and casing is not a perfect straight line, the pre -screwing needs to be adjusted according to the condition of each oil pipe and casing, so that the pre -screwing is successful, otherwise it is easy to produce the wrong buckle, disorder buckle phenomenon to the connecting thread, thereby damaging the thread, affecting the thread connection strength, thread tightness, and seriously producing the accident of falling well, so now a large number of oil pipe and casing production plants adopt manual pre -screwing, the worker engages in simple and repetitive labor, the work is dull, the labor intensity is big, and there are security risks.Therefore, the factory urgently needs a pipeline coupling pre -screwing equipment to realize full -automatic pre -screwing, reduce the labor intensity of the operator, improve the automatic level of the equipment and reduce the safety risk. SUMMARY

[0003] The utility model discloses a kind of pipeline coupling pre -screwing equipment, can avoid the problem that wrong buckle, disorder buckle is generated when coupling pre -screwing, realize full -automatic pre -screwing coupling.

[0004] The utility model discloses a kind of pipeline coupling pre -screwing equipment, can avoid the problem that wrong buckle, disorder buckle is generated when coupling pre -screwing, realize full -automatic pre -screwing coupling.

[0005] Preferably, the outer side of the mandrel is fixedly provided with a limiting step, and the bottom of the limiting step is fixedly provided with a support one.

[0006] Preferably, the clamping structure comprises a plurality of clamping claws, the clamping claws are in right angle shape, the inner side of the clamping shell is provided with a plurality of inclined grooves, the clamping claws are slidably connected with the top surface of the inner side of the inclined grooves through sliding rails, and springs are arranged between the clamping claws and the inner cavity wall of the clamping shell.

[0007] Preferably, the front side of the clamping shell is fixedly provided with a cover plate around, and the cover plate is located outside the plurality of clamping claws.

[0008] Preferably, the pushing mechanism comprises a piston rod, a main shaft cylinder is sleeved outside the piston rod, a hydraulic hollow shaft is fixedly installed at the rear end of the main shaft cylinder, a movable block is movably connected between the piston rod and the hydraulic hollow shaft, a movable cavity is arranged between the piston rod and the main shaft cylinder, the movable cavity is located outside the connection position of the movable block and the piston rod, and a rotary joint is installed at the rear end of the hydraulic hollow shaft.

[0009] Preferably, the rear end of the clamping shell is provided with a guide block, a fixed nut is threadedly connected outside the connection position of the clamping shell and the guide block, and the rear side of the guide block is fixedly installed at the front end of the piston rod through bolts.

[0010] Preferably, the gear transmission mechanism comprises a transmission box, the transmission box is sleeved with the main shaft cylinder, a floating bearing and a fixed bearing are installed between the transmission box and the main shaft cylinder, a large gear is fixedly installed outside the main shaft cylinder, a small gear is meshingly connected outside the large gear, and a driving motor is installed at the rear side of the small gear.

[0011] Preferably, the transmission box and the hydraulic hollow shaft are both fixedly installed with shaft seats, and a support two is fixedly installed at the bottom of the driving motor and the two shaft seats.

[0012] The utility model discloses the beneficial effect is as follows:

[0013] 1, the position of the mandrel is fixed, the front end of the mandrel penetrates the coupling, and then the position of the coupling is fixed, the coupling is prevented from moving up and down and left and right, the clamping shell is pushed forward by the hydraulic pushing mechanism, the clamping structure is clamped at the rear side of the mandrel in the moving process, the clamping shell continues to move forward, and then the clamping structure clamps the outer wall of the coupling, at this moment, the clamping shell is rotated through the gear transmission mechanism, so that the automatic pre -screwing work of the pipeline and the coupling is completed.

[0014] 2, the limiting step outside the mandrel is used for limiting the coupling and the claw, when the clamping shell moves forward, the right angle of the claw is clamped by the limiting step, the clamping shell continues to move forward, the top of the claw slides along the rear inclined surface of the inclined groove top inclined surface, the overall claw position is lowered in the sliding process, and then the distance between the claw and the coupling is reduced, so that the coupling is clamped, and the problems of wrong buckling and disorder buckling during the pre -screwing of the coupling are avoided. DRAWINGS

[0015] Figure 1 It is the cross section schematic view of the utility model;

[0016] Figure 2 It is the sectional view of the utility model;

[0017] Figure 3 It is Figure 2schematic diagram of A in FIG.

[0018] Fig. 1 is a core shaft; 101, a limiting step; 2, a cover plate; 3, a claw; 4, a clamping shell; 401, an inclined groove; 402, a spring; 403, a groove; 5, a fixing nut; 6, a guide block; 7, a piston rod; 8, a main shaft cylinder; 9, a transmission box; 10, an axle seat; 11, a floating bearing; 12, a movable cavity; 13, a fixed bearing; 14, a hydraulic hollow shaft; 15, a movable block; 16, a large gear; 17, a small gear; 18, a driving motor; 19, a rotary joint; 20, a support one; 21, a support two. DETAILED DESCRIPTION

[0019] The utility model will be described below in combination with the drawings and specific embodiments, here the schematic embodiment and explanation of the utility model are explained the utility model, but not as the limitation of the utility model.

[0020] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0021] Please refer to Figures 1-3 The utility model provides the following technical scheme:

[0022] A pipe coupling pre-screwing equipment, the equipment includes a mandrel 1, the rear end of the mandrel 1 movably provided with a clamping shell 4, the clamping shell 4 is installed with the clamping structure between the mandrel 1, the rear end of the clamping shell 4 is fixedly installed with driving device, the driving device includes hydraulic push mechanism and gear transmission mechanism, the hydraulic push mechanism is located at the same horizontal position with the mandrel 1, the hydraulic push mechanism is installed on the outside of the hydraulic push mechanism with gear transmission mechanism.

[0023] In this embodiment: the position of the mandrel 1 is fixed, the front end of the mandrel 1 penetrates the coupling, and then the position of the coupling is fixed, to avoid the coupling moving up and down and left and right, the clamping shell 4 is moved forward by the hydraulic push mechanism, the clamping structure is clamped on the rear side of the mandrel 1 during the moving process, the clamping shell 4 continues to move forward, and then drives the clamping structure to clamp the outer wall of the coupling, at this time, the clamping shell 4 is rotated by the gear transmission mechanism, so that the pre-screwing work of the pipe and the coupling is completed.

[0024] As a technical optimization scheme of the utility model, the outer side of the mandrel 1 is fixedly provided with a limiting step 101, the bottom of the limiting step 101 is fixedly provided with a support 20, and the bottom of the front side of the clamping shell 4 is provided with a groove 403; the clamping structure comprises a plurality of clamping claws 3, the clamping claw 3 is in a right angle shape, the inner side of the clamping shell 4 is provided with a plurality of inclined grooves 401, the clamping claw 3 is slidably connected with the top surface of the inner side of the inclined groove 401 through a sliding rail, and the spring 402 is installed between the clamping claw 3 and the inner cavity wall of the clamping shell 4; the front side of the clamping shell 4 is fixedly provided with a cover plate 2, and the cover plate 2 is located on the outer side of the plurality of clamping claws 3.

[0025] In the embodiment, the limiting step 101 on the outer side of the mandrel 1 is used for limiting the joint ring and the clamping claw 3, when the clamping shell 4 moves forward, the right angle part of the clamping claw 3 is clamped by the limiting step 101, the clamping shell 4 continues to move forward, the top of the clamping claw 3 slides backward along the top inclined surface of the inclined groove 401, the overall clamping claw 3 position is lowered in the sliding process, thereby the distance between the clamping claw 3 and the joint ring is reduced, so that the joint ring is clamped tightly; when the pushing mechanism drives the clamping shell 4 to move backward, the clamping claw 3 is released, the spring 402 pushes the clamping claw 3 to move forward, so that the clamping claw 3 is conveniently reset after use.

[0026] As a technical optimization scheme of the utility model, the pushing mechanism comprises a piston rod 7, the outer side of the piston rod 7 is sleeved with a main shaft cylinder body 8, the rear end of the main shaft cylinder body 8 is fixedly installed with a hydraulic hollow shaft 14, the piston rod 7 and the hydraulic hollow shaft 14 are movably connected with a movable block 15, the piston rod 7 and the main shaft cylinder body 8 are provided with a movable cavity 12, the movable cavity 12 is located on the outer side of the connecting place of the movable block 15 and the piston rod 7, and the rear end of the hydraulic hollow shaft 14 is installed with a rotary joint 19; the rear end of the clamping shell 4 is provided with a guide block 6, the outer side of the connecting place of the clamping shell 4 and the guide block 6 is screw-connected with a fixed nut 5, and the rear side of the guide block 6 and the front end of the piston rod 7 are fixedly installed through bolts.

[0027] In the embodiment, the rear end of the rotary joint 19 is connected with a liquid supply pipe and forms a pushing mechanism with the hydraulic hollow shaft 14, the piston rod 7 and the like, the movable block 15 moves in the movable cavity 12 after the hydraulic hollow shaft 14 is filled with liquid, and then the piston rod 7 moves forward, so that the pushing work is completed.

[0028] As a technical optimization scheme of the utility model, the gear transmission mechanism comprises a transmission box 9, the transmission box 9 is sleeved with the main shaft cylinder body 8, the transmission box 9 and the main shaft cylinder body 8 are installed with a floating bearing 11 and a fixed bearing 13, the outer side of the main shaft cylinder body 8 is fixedly installed with a large gear 16, the outer side of the large gear 16 is meshingly connected with a small gear 17, and the rear side of the small gear 17 is installed with a driving motor 18.

[0029] In the embodiment, the driving motor 18 is started to drive the large gear 16 and the small gear 17 to rotate, and then drive the main shaft cylinder 8 and the clamping shell 4 to rotate, so as to complete the rotating work of the coupling.

[0030] As a technical optimization scheme of the utility model, the outer side of the mandrel 1 is fixedly provided with a limiting step 101, the bottom of the limiting step 101 is fixedly provided with a support one 20, and the bottom of the front side of the clamping shell 4 is provided with a groove 403; the outer side of the transmission box 9 and the hydraulic hollow shaft 14 is fixedly provided with an axle seat 10, and the bottom of the two axle seats 10 and the driving motor 18 is fixedly provided with a support two 21.

[0031] In the embodiment, the position of the mandrel 1 can be fixed by the support one 20, and the position of the rear pushing mechanism and the gear transmission mechanism can be fixed by the support two 21, so that the overall equipment can be stably operated.

[0032] The working principle and the use process of the utility model are as follows: the front end of the mandrel 1 penetrates the coupling, fixes the position of the coupling, avoids the up-down and left-right movement of the coupling, the movable block 15 in the movable cavity 12 is pushed to move in the hydraulic hollow shaft 14 after being filled with liquid, and then the piston rod 7 and the clamping shell 4 are pushed to move forward, at this time, the top of the claw 3 is clamped by the limiting step 101 at the right angle, the clamping shell 4 continues to move forward, the top of the claw 3 slides along the top inclined surface of the inclined groove 401 backward, the position of the overall claw 3 is lowered in the sliding process, and then the distance between the claw 3 and the coupling is reduced, so that the coupling is clamped, and then the driving motor 18 is started to drive the large gear 16 and the small gear 17 to rotate, and then drive the main shaft cylinder 8 and the clamping shell 4 to rotate, so as to complete the pre-wrenching work of the pipeline and the coupling.

[0033] The technical scheme provided by the utility model embodiment is introduced in detail, the principle and the implementation mode of the utility model embodiment are described by applying specific examples, the above embodiment is only applicable to help understanding the principle of the utility model embodiment, and for the general technical personnel in the art, the specific implementation mode and the application range of the utility model embodiment will be changed, and the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A pipe coupling pre-spinning apparatus, characterized by: The device includes a mandrel (1), the rear end of the mandrel (1) is movably provided with a clamping shell (4), a clamping structure is installed between the clamping shell (4) and the mandrel (1), a driving device is fixedly installed at the rear end of the clamping shell (4), the driving device includes a hydraulic pushing mechanism and a gear transmission mechanism, the hydraulic pushing mechanism is located at the same horizontal position as the mandrel (1), and the hydraulic pushing mechanism and the gear transmission mechanism are installed on the outer side of the hydraulic pushing mechanism.

2. A pipe coupling pre-spiicing apparatus according to claim 1 wherein: A limiting step (101) is fixedly arranged on the outer side of the mandrel (1), a support (20) is fixed to the bottom of the limiting step (101), and a groove (403) is formed in the bottom of the front side of the clamping shell (4).

3. A pipe coupling pre-spiicing apparatus as defined in claim 1 wherein: The clamping structure includes a plurality of clamping claws (3), the clamping claws (3) are in a right angle shape, a plurality of inclined grooves (401) are formed in the inner side of the clamping shell (4), the clamping claws (3) are slidably connected with the top surface of the inner side of the inclined grooves (401) through sliding rails, and springs (402) are installed between the clamping claws (3) and the inner cavity wall of the clamping shell (4).

4. A pipe coupling pre-spiicing apparatus as defined in claim 2 wherein: A cover plate (2) is fixedly arranged on the front side of the clamping shell (4), and the cover plate (2) is located on the outer side of the plurality of clamping claws (3).

5. A pipe coupling pre-spiicing apparatus as defined in claim 1 wherein: The pushing mechanism includes a piston rod (7), the outer side of the piston rod (7) is sleeved with a main shaft cylinder (8), the rear end of the main shaft cylinder (8) is fixedly installed with a hydraulic hollow shaft (14), a movable block (15) is movably connected between the piston rod (7) and the hydraulic hollow shaft (14), an active cavity (12) is arranged between the piston rod (7) and the main shaft cylinder (8), the active cavity (12) is located on the outer side of the connection between the movable block (15) and the piston rod (7), and a rotary joint (19) is installed at the rear end of the hydraulic hollow shaft (14).

6. A pipe coupling pre-spiicing apparatus as defined in claim 1 wherein: The rear end of the clamping shell (4) is provided with a guide block (6), a fixed nut (5) is threadedly connected to the outer side of the connection between the clamping shell (4) and the guide block (6), and the rear side of the guide block (6) is fixedly installed with the front end of the piston rod (7) through bolts.

7. A pipe coupling pre-spiicing apparatus as defined in claim 1 wherein: The gear transmission mechanism includes a transmission box (9), the transmission box (9) is sleeved with the main shaft cylinder (8), a floating bearing (11) and a fixed bearing (13) are installed between the transmission box (9) and the main shaft cylinder (8), a large gear (16) is fixedly installed on the outer side of the main shaft cylinder (8), a small gear (17) is meshingly connected to the outer side of the large gear (16), and a driving motor (18) is installed at the rear side of the small gear (17).

8. A pipe coupling pre-spiicing apparatus as defined in claim 7 wherein: The outer sides of the transmission box (9) and the hydraulic hollow shaft (14) are fixedly installed with shaft seats (10), and the bottoms of the two shaft seats (10) and the driving motor (18) are fixedly installed with a support (21).

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