An automatic threading device for casing and corrosion-proof tubing thread protector

Abstract

This invention provides an automatic screwing device for thread protectors of oil casing and anti-corrosion tubing, relating to the technical field of screwing devices. It includes a proximity component, a clamping component, a driving component, a locking component, and a lifting component. The proximity component provides a function of bringing the components closer together. The clamping component is located above the proximity component and is used to clamp the tubing workpiece. The driving component is located below the proximity component and is used to clamp and drive the protector body to rotate. The locking component is located on the clamping component and the driving component and is used to provide a one-way locking function. The lifting component is located at the bottom of the driving component and is used to lift the protector body. Through the arrangement of the driving component and the lifting component, and by their mutual cooperation, the stability of the protector body can be ensured, the threaded portion can be aligned, the screwing quality can be improved, and damage to the threaded portion can be avoided.

Description

Technical Field

[0001] This invention relates to the field of screwing device technology, specifically to an automatic screwing device for thread protectors of oil casing and anti-corrosion oil pipes. Background Technology

[0002] Both ends of the casing and anti-corrosion tubing are usually threaded. In order to protect the threaded parts of the casing and anti-corrosion tubing and to prevent the threaded parts from being damaged by bumps, wear or external impacts during production, transportation, storage and well running, thread protectors are usually required.

[0003] In related technologies, such as the automatic tightening device for thread protectors with announcement number CN224169206U, there is a sleeve base, a drive assembly, and a fixing assembly. The sleeve base is used to place a horizontally positioned sleeve. The drive assembly is connected to the sleeve base to drive the sleeve base to rotate. The fixing assembly is located on one axial side of the sleeve base and includes a fixing bracket, a main rod, a first clamping part, and a second clamping part. The first clamping part and the second clamping part are connected in parallel to the main rod. The first clamping part has an outer arc surface, and the second clamping part has an inner arc surface that matches the outer arc surface. The outer arc surface and the inner arc surface face each other, and a clamping space is formed between the outer arc surface and the inner arc surface. The clamping space is used to fix the thread protector.

[0004] The above-mentioned device can tighten the threaded part of the thread protector and the oil casing. However, the device is relatively large and inconvenient to use on the construction site. Moreover, the thread protector is prone to displacement during the initial tightening stage. If it is forcibly tightened with tools while in a displaced state, the thread may be deformed or the protector may be damaged. Therefore, it is not ideal to use. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic screwing device for thread protectors of oil casing and anti-corrosion oil pipes, solving the problem of inconvenient automatic screwing of thread protectors at construction sites.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic screwing device for thread protectors of oil casing and anti-corrosion oil pipes, comprising: A proximity component, which provides the function of moving closer to each other; A clamping assembly, located near the upper part of the assembly, is used to clamp the oil pipe workpiece; A drive assembly, located near the lower part of the assembly, is used to clamp and drive the protector body to rotate. A locking component, which is disposed on the clamping component and the driving component, is used to provide a one-way locking function; The lifting component, located at the bottom of the drive component, supports the protector body. Through the coordinated operation of the drive component and the lifting component, the stability of the protector body is ensured, the threaded portion is aligned, the tightening quality is improved, and damage to the threaded portion is avoided. The proximity component, clamping component, and locking component enable automatic screwing of the protector body to the oil pipe workpiece. The operation is simple, the structure is reliable, and it is ideal for use.

[0007] Preferably, the clamping assembly includes a clamping housing, a clamping bidirectional lead screw is rotatably connected inside the clamping housing, two movable shells are threaded onto the clamping bidirectional lead screw, clamping claws are fixedly connected inside the movable shells, and a clamping handle is fixedly connected to one end of the clamping bidirectional lead screw.

[0008] Preferably, the drive assembly includes a drive housing, a drive bidirectional lead screw rotatably connected inside the drive housing, a drive housing one and a drive housing two threadedly connected to the drive bidirectional lead screw, an auxiliary wheel rotatably connected inside the drive housing one, an auxiliary wheel rotatably connected inside the drive housing two, a drive wheel rotatably connected to the end of the drive housing two, a drive motor fixedly installed inside the drive housing two, the drive motor driving the drive wheel to rotate through a transmission component, and a drive handle fixedly connected to one end of the drive bidirectional lead screw.

[0009] Preferably, the locking assembly includes a ring ratchet and a fixed sliding sleeve. A locking rod is slidably connected inside the fixed sliding sleeve. A hand-held block is fixedly connected to one end of the locking rod, and a locking pawl is fixedly connected to the other end of the locking rod. The locking pawl cooperates with the ring ratchet. A locking spring is sleeved on the locking rod, and the locking spring is located between the fixed sliding sleeve and the locking pawl.

[0010] Preferably, the lifting assembly includes a connecting block, a base plate is fixedly connected to the lower end of the connecting block, a lifting seat is fixedly connected to the base plate, and a lifting wheel is rotatably connected to the lifting seat.

[0011] Preferably, the connecting block is fixedly connected to the drive housing, and there are four lifting seats, which are evenly arranged around the circumference.

[0012] Preferably, the proximity component includes a proximity housing, a proximity screw is rotatably connected inside the proximity housing, a proximity handle is fixedly connected to one end of the proximity screw, a proximity channel is provided on the proximity housing, a moving block is threadedly connected to the proximity screw, the moving block is slidably engaged with the proximity channel, and a protrusion is provided on the upper part of the proximity housing.

[0013] Preferably, an indicator needle is fixedly connected to the outer side of the movable block, and a scale line is provided on the side near the housing, with the indicator needle located outside the scale line.

[0014] This invention provides an automatic screwing device for thread protectors on oil casing and corrosion-resistant oil pipes. It has the following advantages: 1. The present invention, through the setting of the driving component and the supporting component, and by utilizing the cooperation between the driving component and the supporting component, can ensure the stability of the protector body, ensure the alignment of the threaded part, improve the tightening quality, and avoid damage to the threaded part.

[0015] 2. The present invention, through the setting of proximity component, clamping component and locking component, can automatically screw the protector body to the oil pipe workpiece. It is simple to operate, reliable in structure and ideal in use. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention in use; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the clamping component in the present invention; Figure 4 This is a schematic diagram of the driving component in this invention; Figure 5 This is a schematic diagram of the structure near the component in this invention; Figure 6 This is a schematic diagram of the locking component in this invention; Figure 7 for Figure 6 Enlarged view of point A in the middle; Figure 8 This is a schematic diagram of the supporting component in this invention.

[0017] Among them, 101, oil pipe workpiece; 102, protector body; 2, clamping assembly; 3, drive assembly; 4, proximity assembly; 5, locking assembly; 6, lifting assembly; 201, clamping housing; 202, clamping double-acting lead screw; 203, moving housing; 204, clamping claw; 205, clamping handle; 301, drive housing; 302, drive double-acting lead screw; 303, drive housing one; 304, auxiliary wheel; 305, drive housing two; 306, drive handle; 307, transmission component; 3 08. Drive motor; 309. Drive wheel; 401. Near the housing; 402. Near the channel; 403. Moving block; 404. Near the lead screw; 405. Near the handle; 406. Protrusion; 407. Scale line; 408. Indicator needle; 501. Ring ratchet; 502. Locking pawl; 503. Locking rod; 504. Locking spring; 505. Fixed sliding sleeve; 506. Hand-held block; 601. Connecting block; 602. Base plate; 603. Lifting seat; 604. Lifting wheel. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1-8 As shown, an embodiment of the present invention provides an automatic screwing device for oil casing and anti-corrosion oil pipe thread protectors, comprising: refer to Figure 1 , Figure 5 The proximity component 4 is used to provide the function of moving closer to each other. The proximity component 4 includes a proximity housing 401, a proximity screw 404 is rotatably connected inside the proximity housing 401, a proximity handle 405 is fixedly connected to one end of the proximity screw 404, a proximity channel 402 is provided on the proximity housing 401, a moving block 403 is threadedly connected to the proximity screw 404, the moving block 403 is slidably engaged with the proximity channel 402, a protrusion 406 is provided on the upper part of the proximity housing 401, an indicator needle 408 is fixedly connected to the outer side of the moving block 403, a scale line 407 is provided on the side of the proximity housing 401, and the indicator needle 408 is located outside the scale line 407. During the tightening and approaching operation, the approach handle 405 drives the approach screw 404 to rotate, the approach screw 404 drives the moving block 403 to move, thereby driving the drive component 3 on the moving block 403 to move, so that the drive component 3 and the clamping component 2 move closer to each other, realizing the initial alignment between the protector body 102 and the oil pipe workpiece 101 and the subsequent continuous tightening and approaching.

[0020] refer to Figure 1 , Figure 3 Clamping assembly 2 is located near the upper part of assembly 4 and is used to clamp the oil pipe workpiece 101. Clamping assembly 2 includes clamping housing 201, clamping bidirectional lead screw 202 is rotatably connected inside clamping housing 201, two movable housings 203 are threaded on clamping bidirectional lead screw 202, clamping claws 204 are fixedly connected inside movable housings 203, and clamping handle 205 is fixedly connected to one end of clamping bidirectional lead screw 202. In this embodiment, the clamping housing 201 is fixedly connected to the protrusion 406; During clamping operations, the oil pipe workpiece 101 is placed between the two movable housings 203. The clamping handle 205 drives the clamping double-acting screw 202 to rotate. The threads on the clamping double-acting screw 202 cause the two movable housings 203 to move closer to each other, thereby causing the clamping claws 204 to contact the oil pipe workpiece 101, thus clamping the oil pipe workpiece 101 and realizing the clamping function.

[0021] refer to Figure 1 , Figure 4 The drive assembly 3 is located near the lower part of the assembly 4 and is used to clamp and drive the protector body 102 to rotate. The drive assembly 3 includes a drive housing 301, a drive bidirectional lead screw 302 is rotatably connected inside the drive housing 301, a drive housing 1 303 and a drive housing 2 305 are threadedly connected to the drive bidirectional lead screw 302, an auxiliary wheel 304 is rotatably connected inside the drive housing 1 303, an auxiliary wheel 304 is rotatably connected inside the drive housing 2 305, a drive wheel 309 is rotatably connected to the end of the drive housing 2 305, a drive motor 308 is fixedly installed inside the drive housing 2 305, the drive motor 308 drives the drive wheel 309 to rotate through the transmission component 307, and a drive handle 306 is fixedly connected to one end of the drive bidirectional lead screw 302. In this embodiment, the drive housing 301 is fixedly connected to the moving block 403. In order to control the speed of the drive wheel 309, the drive motor 308 can be a servo motor. With the help of the PLC controller, it can achieve slow rotation in the early stage to align the threaded part, and stable rotation in the later stage to achieve the function of rapid twisting. When the protector body 102 rotates, the drive handle 306 first drives the drive double-acting screw 302 to rotate, thereby causing the drive housing 1 303 and drive housing 2 305 to approach each other and contact the protector body 102. Then, the drive motor 308 works under the action of the external power supply and controller to initially fix the protector body 102. The drive wheel 309 is driven to rotate through the transmission component 307, and the drive wheel 309 drives the protector body 102 to rotate, thereby generating a twisting force. The transmission component 307 includes two pulleys and a belt between the two pulleys. One pulley is fixedly connected to the output end of the drive motor 308, and the other pulley is fixedly connected to the drive wheel 309. The drive motor 308 drives one of the pulleys to rotate, which in turn drives the other pulley to rotate via the belt, thereby driving the drive wheel 309 to rotate.

[0022] refer to Figure 6 , Figure 7 Locking component 5 is disposed on clamping component 2 and driving component 3 and is used to provide one-way locking function. Locking component 5 includes a ring ratchet 501 and a fixed slide sleeve 505. A locking rod 503 is slidably connected inside the fixed slide sleeve 505. A hand block 506 is fixedly connected to one end of the locking rod 503, and a locking pawl 502 is fixedly connected to the other end of the locking rod 503. The locking pawl 502 cooperates with the ring ratchet 501. A locking spring 504 is sleeved on the locking rod 503 and is located between the fixed slide sleeve 505 and the locking pawl 502. The driving double-acting lead screw 302 and the clamping double-acting lead screw 202 are respectively fixedly connected to the two ring ratchet 501; During the locking operation, under the elastic force of the locking spring 504, the locking pawl 502 is always engaged with the ring ratchet 501, so that the driving double-acting screw 302 and the clamping double-acting screw 202 can only rotate in one direction. During the clamping and driving operations, the auxiliary wheel 304, the driving wheel 309, and the clamping pawl 204 are kept stable, thereby ensuring the stability of the protector body 102 and the oil pipe workpiece 101 and the quality of the screwing. When it is necessary to release the reverse rotation drive double-acting screw 302 and clamp double-acting screw 202, the locking lever 503 is pulled by the hand block 506 to lock the pawl 502, thereby moving the locking pawl 502 away from the ring ratchet 501. At this time, without the restriction of the locking pawl 502, the drive double-acting screw 302 and clamp double-acting screw 202 can rotate normally.

[0023] refer to Figure 1 , Figure 8 The lifting component 6 is located at the bottom of the drive component 3 and is used to lift the protector body 102. The lifting component 6 includes a connecting block 601, the lower end of which is fixedly connected to a base plate 602. A lifting seat 603 is fixedly connected to the base plate 602, and a lifting wheel 604 is rotatably connected to the lifting seat 603. The connecting block 601 is fixedly connected to the drive housing 301. There are four lifting seats 603, which are evenly arranged around the circumference. During the lifting operation, the protector body 102 is placed directly on multiple lifting rollers 604. The multiple lifting rollers 604 can make the end face of the protector body 102 on the same plane. In conjunction with the clamping assembly 2, it can ensure that the protector body 102 and the threaded part of the oil pipe workpiece 101 are accurately aligned and screwed in, avoiding the difficult operation of manually aligning the protector body 102 and the threaded part.

[0024] Working principle: First, place the protector body 102, which is the oil pipe thread protector, on multiple lifting rollers 604. The multiple lifting rollers 604 can make the end face of the protector body 102 on the same plane. First, drive the double-acting screw 302 to rotate by driving the handle 306, thereby driving the first drive housing 303 and the second drive housing 305 to approach each other and contact the protector body 102, thus achieving the initial fixation of the protector body 102. The oil pipe workpiece 101 is placed between two movable shells 203. The clamping handle 205 drives the clamping double-acting screw 202 to rotate. The threads on the clamping double-acting screw 202 cause the two movable shells 203 to move closer to each other, thereby causing the clamping claw 204 to contact the oil pipe workpiece 101 and clamp the oil pipe workpiece 101, thus achieving the clamping function. Then, by moving the handle 405, the lead screw 404 is rotated, and the lead screw 404 moves the moving block 403, thereby moving the drive component 3 on the moving block 403, so that the drive component 3 and the clamping component 2 move closer to each other, thereby achieving contact between the threaded part of the protector body 102 and the oil pipe workpiece 101. Then, the drive motor 308 works under the action of the external power supply and controller, and drives the drive wheel 309 to rotate through the transmission component 307. The drive wheel 309 drives the protector body 102 to rotate, thereby generating a twisting force. While screwing, the device moves closer to component 4, and the indicator needle 408 moves relative to the scale line 407. Based on the position of the scale line 407, the device body 102 can be installed completely without any exposed thread. The device of this invention has a compact overall structure, can be carried to the construction site, and solves the problem of inconvenient automatic screwing of thread protectors at the construction site.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic screwing device for thread protectors of oil casing and corrosion-resistant oil pipes, characterized in that, include: Proximity component (4), which provides the function of moving closer to each other; Clamping assembly (2), which is located on the upper part near the assembly (4) and is used to clamp the oil pipe workpiece (101). A drive assembly (3) is located near the lower part of the assembly (4) and is used to clamp and drive the protector body (102) to rotate. Locking component (5), which is disposed on clamping component (2) and driving component (3), is used to provide one-way locking function; The lifting component (6) is located at the bottom of the drive component (3) and is used to lift the protector body (102).

2. The automatic screwing device for oil casing and anti-corrosion oil pipe thread protector according to claim 1, characterized in that: The clamping assembly (2) includes a clamping housing (201), a clamping bidirectional lead screw (202) is rotatably connected inside the clamping housing (201), two movable shells (203) are threaded onto the clamping bidirectional lead screw (202), a clamping claw (204) is fixedly connected inside the movable shell (203), and a clamping handle (205) is fixedly connected to one end of the clamping bidirectional lead screw (202).

3. The automatic screwing device for oil casing and anti-corrosion oil pipe thread protector according to claim 1, characterized in that: The drive assembly (3) includes a drive housing (301), a drive bidirectional lead screw (302) is rotatably connected inside the drive housing (301), a drive housing one (303) and a drive housing two (305) are threadedly connected to the drive bidirectional lead screw (302), an auxiliary wheel (304) is rotatably connected inside the drive housing one (303), an auxiliary wheel (304) is rotatably connected inside the drive housing two (305), a drive wheel (309) is rotatably connected to the end of the drive housing two (305), a drive motor (308) is fixedly installed inside the drive housing two (305), the drive motor (308) drives the drive wheel (309) to rotate through a transmission component (307), and a drive handle (306) is fixedly connected to one end of the drive bidirectional lead screw (302).

4. The automatic screwing device for oil casing and anti-corrosion oil pipe thread protector according to claim 1, characterized in that: The locking assembly (5) includes a ring ratchet (501) and a fixed slide sleeve (505). A locking rod (503) is slidably connected inside the fixed slide sleeve (505). A hand-held block (506) is fixedly connected to one end of the locking rod (503), and a locking pawl (502) is fixedly connected to the other end of the locking rod (503). The locking pawl (502) cooperates with the ring ratchet (501). A locking spring (504) is sleeved on the locking rod (503), and the locking spring (504) is located between the fixed slide sleeve (505) and the locking pawl (502).

5. An automatic screwing device for thread protectors of oil casing and anti-corrosion oil pipes according to claim 3, characterized in that: The lifting assembly (6) includes a connecting block (601), the lower end of which is fixedly connected to a base plate (602), a lifting seat (603) is fixedly connected to the base plate (602), and a lifting wheel (604) is rotatably connected to the lifting seat (603).

6. An automatic screwing device for thread protectors of oil casing and anti-corrosion oil pipes according to claim 5, characterized in that: The connecting block (601) is fixedly connected to the drive housing (301), and there are four lifting seats (603) which are evenly arranged around the circumference.

7. An automatic screwing device for thread protectors of oil casing and anti-corrosion oil pipes according to claim 1, characterized in that: The proximity component (4) includes a proximity housing (401), a proximity screw (404) is rotatably connected inside the proximity housing (401), a proximity handle (405) is fixedly connected to one end of the proximity screw (404), a proximity channel (402) is provided on the proximity housing (401), a moving block (403) is threadedly connected to the proximity screw (404), the moving block (403) is slidably engaged with the proximity channel (402), and a protrusion (406) is provided on the upper part of the proximity housing (401).

8. An automatic screwing device for thread protectors of oil casing and anti-corrosion oil pipes according to claim 7, characterized in that: An indicator needle (408) is fixedly connected to the outside of the movable block (403), and a scale line (407) is provided on the side near the housing (401), with the indicator needle (408) located outside the scale line (407).

Images