Electric catwalk winch

Abstract

An electric catwalk winch, comprising a winch body and a ramp provided with the winch body, the top end of the ramp is provided with a guide wheel for receiving the steel wire rope of the winch body, the front end of the ramp is provided with a receiving groove, the winch body is located in the receiving groove, the rear end of the receiving groove is provided with a placing groove for the winch body to move therein, a sliding groove is arranged in the placing groove, a sliding block is arranged in the sliding groove, a follow-up block is arranged on the winch body, the follow-up block is connected with the sliding block, the winch body moves in the placing groove through the connection of the sliding block and the follow-up block, and a limiting groove is arranged on the sliding groove; by arranging the winch body in the receiving groove and the placing groove of the ramp, cooperating with the movement structure of the sliding block and the follow-up block, the position of the winch body can be adjusted according to the operation requirement, the length of the stress section of the steel wire rope is shortened, the possibility of danger caused by the over-heavy head of the ramp when the ramp is obtuse is avoided, and the safety is improved.

Description

Technical Field

[0001] This invention relates to the field of catwalk winches, and particularly to an electric catwalk winch. Background Technology

[0002] In drilling operations, the drill rig is relatively high and heavy. Currently, most routine operations rely on small winches operated manually, dragging drill strings, which is physically demanding, dangerous, and prone to damaging threads. Automatic catwalks are high-tech products integrating mechanics, electricity, and hydraulics, used for transporting drill strings between the surface drill string area and the drill rig area. They have automatic lifting and lowering functions. Automatic catwalks are gradually becoming more common in China, achieving safe and efficient drilling. However, most automatic catwalk winches still rely on hydraulic drive, requiring large hydraulic stations. In some inconvenient environments with high winds, sandstorms, or high humidity, using hydraulic motors is not practical. The existing patent number is CN115126. Patent 429B describes a pure electric catwalk device, relating to the field of oil and gas drilling equipment technology. One end of the cantilever and conveyor frame is connected by a rotating shaft, and when not in operation, it is retracted into the base frame. The bottom of the cantilever has rollers that engage with the track within the base frame. The pipe-pushing trolley is mechanically secured to the conveyor frame, and moves along the conveyor frame by the traction chain of the pipe-pushing trolley, conveying drill pipes. Advantages include: the entire system is electrically driven, combining electromechanical components, allowing for automatic drill pipe conveying under worker supervision; it is safe, environmentally friendly, and easy to maintain; the control system detects the current of the pipe-pushing trolley winch motor, enabling the trolley and drill pipe to move in tandem, reducing the risk of drill pipes falling from the air. However, the raising and lowering of the ramp are all accomplished with the assistance of external equipment. At the same time, the winch is fixed on the ramp. When the winch drives the conveyor frame to lift, the length of the wire rope extended by the winch reaches the length of two ramps. Since the wire rope itself has a certain elastic modulus, the longer the stressed section, the greater the elongation during loading, which will lead to a decrease in the lifting accuracy of the winch. The wire rope is prone to vibration due to load impact and start-stop inertia. The vibration decay rate of the long rope is slow, which is prone to resonance. This will not only aggravate the fatigue damage of the wire rope, but may also cause load swaying and unstable operation. At the same time, when the integrated catwalk is not used, the ramp is in a closed state, and the electric winch on the ramp is exposed to the outside. External wind, sand and rain will damage the electric winch. To solve the above problems, an electric catwalk winch is proposed. Summary of the Invention

[0003] The purpose of this invention is to solve the problems of traditional automatic catwalks relying on hydraulic drive, which are inconvenient to use and difficult to maintain in harsh environments such as high winds, sandstorms and high humidity; in existing electric catwalks, the winch is fixed to the slope, resulting in an excessively long stress section of the wire rope during lifting operations, which leads to decreased lifting accuracy, easy vibration of the wire rope, slow attenuation, easy fatigue damage and unstable operation; when the catwalk is not in operation, the winch is placed in the open, which is susceptible to erosion and damage from wind, sand and rain.

[0004] The present invention adopts the following technical solution: An electric catwalk winch includes a winch body and a ramp on which the winch body is mounted. A guide wheel is mounted at the top of the ramp to receive the wire rope of the winch body. A storage groove is mounted at the front end of the ramp, and the winch body is located in the storage groove. A placement groove is mounted at the rear end of the storage groove for the winch body to move within it. A sliding groove is mounted in the placement groove, and a sliding block is mounted in the sliding groove. A follower block is mounted on the winch body, and the follower block is connected to the sliding block. The winch body moves within the placement groove through the connection between the sliding block and the follower block. A limiting groove is mounted on the sliding groove, and the limiting groove cooperates with the follower block to fix the position of the winch body in the placement groove. Furthermore, the winch body includes a winch base and two sets of winch motors mounted on the winch base. Each set of winch motors is equipped with a steering box and an encoder that cooperates with the winch motor. A drum loaded with wire rope is arranged between the two steering boxes. A vertical baffle is provided on the winch base, and the baffle covers the entire winch body. An insertion groove is provided on the lower surface of the winch base, and an insertion block is provided in the insertion groove. Furthermore, the winch base has an arc-shaped groove at the contact position of the connection between the storage slot and the placement slot, which is used to flip the winch body into the placement slot. The top of the baffle plate rests on the front end of the storage slot, and the insertion block is located in the insertion slot and mounted on the placement slot, which is used to store the entire winch body at the ramp. Furthermore, each side of the winch base is provided with a set of follower blocks. The cross-section of the follower block is L-shaped and rotated 90 degrees clockwise. The vertical rod is fixedly connected to the winch base, and the bottom of the horizontal rod is provided with a connecting column. The connecting column is connected to the sliding block. An electric push rod is provided on the inner side of the horizontal rod. A horizontal U-shaped rod is provided on the electric push rod. One end of the U-shaped rod is fixedly mounted on the electric push rod, and the other end extends into the limiting groove to fix the winch body. Furthermore, both sides of the placement groove are provided with sliding grooves, and a conveyor belt driven by a drive motor is provided in the sliding groove. The drive motor is located at the end of the ramp, and its output end extends into the sliding groove to drive the conveyor belt to rotate. A sliding block is provided in the sliding groove, and a part of the sliding block extends out of the sliding groove. A connecting hole is provided on this part. The connecting hole cooperates with the connecting post of the follower block to connect the sliding block and the follower block. The part of the sliding block located in the sliding groove has a through groove, and a locking block is provided in the through groove to fix the conveyor belt and the sliding block, thereby ensuring that the conveyor belt and the sliding block remain relatively stationary. Furthermore, the limiting groove is located above the slide groove, and there are several limiting grooves. The end of the electric push rod is located inside the follower block, and a U-shaped rod is fixedly installed on the output end. The length of one end of the U-shaped rod inserted into the limiting groove is longer than that of the other end, which is used to reduce the progress of the electric push rod and improve its strength. Furthermore, the ramp is rotatably mounted on the base frame of the catwalk. Between the base frame and the ramp are a conveyor frame and a cantilever frame for transporting goods. One end of the conveyor frame is connected to the cantilever frame shaft, and the other end has an arc-shaped block for abutting the bottom of the ramp. One end of the cantilever frame is rotatably mounted on the base frame of the catwalk, and the other end is connected to the conveyor frame shaft. The wire rope of the winch drum passes around the guide wheel at the front end of the ramp and connects to the end of the conveyor frame that contacts the ramp, for driving the ramp, conveyor frame and cantilever frame to unfold.

[0005] The beneficial effects of this invention are: By setting the winch body in the storage and placement slots of the ramp, and with the moving structure of the sliding block and the follower block, the position of the winch body can be adjusted according to the operation requirements, shortening the length of the stressed section of the wire rope, reducing the elongation of the wire rope when loaded, improving the lifting accuracy of the winch, reducing the vibration amplitude of the wire rope caused by long-distance stress, avoiding resonance, slowing down fatigue damage of the wire rope, extending the service life of the wire rope, ensuring the stability of the load conveying process, avoiding the possibility of danger due to excessive head weight when the ramp is obtuse, and improving safety. When the catwalk is not in operation, the winch body can be stored in the storage slot of the ramp. The shield covers the winch body and is placed at the front of the storage slot, reducing the area of ​​the winch body exposed to the external environment, effectively blocking the erosion of wind, sand and rain, solving the problem of winch damage caused by open-air placement, and improving the protective performance and service life of the winch body. By driving the U-shaped rod with an electric push rod to engage or disengage from the limiting groove, and cooperating with the conveyor belt to move the sliding block, the position adjustment and fixation of the winch body can be quickly realized, adapting to the needs of different operating scenarios and improving the versatility and flexibility of the device. Attached Figure Description

[0006] Figure 1A schematic diagram showing the stowage state of an electric catwalk winch for invention; Figure 2 A schematic diagram illustrating the usage of an electric catwalk winch for the invention; Figure 3 A schematic diagram of the overall structure of a ramp for inventing an electric catwalk winch; Figure 4 A schematic diagram of the winch body flipping structure for an invention of an electric catwalk winch; Figure 5 A schematic diagram of the ramp explosion structure for inventing an electric catwalk winch; Figure 6 A schematic diagram of the overall structure of the winch body for the invention of an electric catwalk winch; Figure 7 A schematic diagram of the bottom of the winch body structure for the invention of an electric catwalk winch; Figure 8 A schematic diagram of a partial ramp structure for an electric catwalk winch; Figure 9 A schematic diagram of the internal structure of a ramp for inventing an electric catwalk winch; In the diagram: 1. Ramp; 2. Winch body; 3. Guide wheel; 4. Storage slot; 5. Placement slot; 6. Slide groove; 7. Limiting slot; 8. Sliding block; 9. Connecting hole; 10. Through slot; 11. Transmission belt; 12. Drive motor; 13. Follower block; 14. Electric push rod; 15. U-shaped rod; 16. Connecting column; 17. Winch base; 18. Winch motor; 19. Steering box; 20. Encoder; 21. Drum; 22. Baffle plate; 23. Insertion slot; 24. Insertion block; 25. Base frame; 26. Conveyor frame; 27. Cantilever frame. Detailed Implementation

[0007] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0008] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0009] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0010] Example 1 This invention provides an electric catwalk winch, including a winch body 2 and a ramp 1 on which the winch body 2 is mounted. A guide wheel 3 is mounted at the top of the ramp 1, and the guide wheel 3 supports the wire rope of the winch body 2 to change the direction of force on the wire rope and ensure the smoothness of the wire rope traction action. A storage groove 4 is mounted at the front end of the ramp 1, and the winch body 2 is located in the storage groove 4. A placement groove 5 is mounted at the rear end of the storage groove 4, and the placement groove 5 provides movement space for the winch body 2. A sliding groove 6 is mounted in the placement groove 5, and a sliding block 8 is mounted in the sliding groove 6. A follower block 13 is mounted on the winch body 2, and the follower block 13 is connected to the sliding block 8 so that the winch body 2 can move smoothly in the placement groove 5, which facilitates the adjustment of the position of the winch body 2 according to the operation requirements. A limiting groove 7 is mounted on the sliding groove 6, and the limiting groove 7 cooperates with the follower block 13 to fix the position of the winch body 2 in the placement groove 5, prevent the winch body 2 from shifting during operation, and ensure the stability of the operation. The winch body 2 includes a winch base 17 and two sets of winch motors 18 mounted on the winch base 17. Each set of winch motors 18 is equipped with a steering box 19 and an encoder 20 that works with the winch motor 18. The encoder 20 is used to accurately detect the speed and direction of the winch motor 18 and work with the control system to achieve high-precision control of the winch. A drum 21 loaded with wire rope is set between the two steering boxes 19. The two sets of winch motors 18 drive the drum 21 to rotate synchronously through the steering boxes 19 to ensure the stable power of the drum 21 in winding and unwinding the wire rope. A vertical baffle 22 is set on the winch base 17. The baffle 22 covers the entire winch body 2 and is used to prevent external impurities such as wind, sand and rain from entering the interior of the winch body 2, protecting the core components such as the winch motors 18 and the drum 21 from damage. There is an insertion groove 23 on the lower surface of the winch base 17. An insertion block 24 is set in the insertion groove 23. The insertion block 24 is used to cooperate with the structure of the placement groove 5 to improve the installation stability of the winch body 2 in the placement groove 5. The winch base 17 has an arc-shaped groove at the contact point of the connection between the storage slot 4 and the placement slot 5. This arc-shaped groove facilitates the winch body 2 to be flipped into the placement slot 5. In the storage state, the top of the baffle 22 rests on the front end of the storage slot 4, further enhancing the protective effect of the winch body 2 in the storage state. The insertion block 24 is located in the insertion slot 23 and mounted on the placement slot 5. Through the baffle 22 and the insertion block 24, the entire winch body 2 can be stably stored in the storage slot 4 of the ramp 1, reducing the exposed area of ​​the winch body 2 and reducing the corrosion of it by the external environment. A set of follower blocks 13 are provided on each side of the winch base 17. The cross section of the follower block 13 is L-shaped with a clockwise rotation of 90 degrees. Its vertical part is fixedly connected to the winch base 17 to ensure the connection strength between the follower block 13 and the winch base 17. A connecting column 16 is provided at the bottom of the horizontal bar. The connecting column 16 is connected to the sliding block 8. The winch body 2 is moved along the slide groove 6 by the follower block 13. An electric push rod 14 is provided on the inner side of the horizontal bar. A horizontal U-shaped rod 15 is provided on the electric push rod 14. One end of the U-shaped rod 15 is fixedly set on the electric push rod 14, and the other end extends into the limiting groove 7. The electric push rod 14 drives the U-shaped rod 15 to extend and retract, so as to realize the engagement or disengagement of the U-shaped rod 15 with the limiting groove 7, thereby quickly fixing or unlocking the position of the winch body 2. The operation is convenient and the fixing effect is reliable. Slides 6 are provided on both sides of the placement groove 5. A conveyor belt driven by a drive motor 12 is installed in the slide 6. The drive motor 12 is located at the end of the ramp 1. Its output end extends into the slide 6 and drives the conveyor belt to rotate. The drive motor 12 provides power to the conveyor belt, so that the conveyor belt can drive the sliding block 8 to move along the slide 6. The sliding block 8 is installed in the slide 6. A part of the sliding block 8 extends out of the slide 6. A connecting hole 9 is provided on this part. The connecting hole 9 cooperates with the connecting post 16 of the follower block 13 to realize a stable connection between the sliding block 8 and the follower block 13. There is a through groove 10 in the part of the sliding block 8 located in the slide 6. There is a locking block in the through groove 10. The locking block fixes the conveyor belt and the sliding block 8 to ensure that the conveyor belt and the sliding block 8 remain relatively stationary, so that the conveyor belt can accurately drive the sliding block 8 and the winch body 2 to move. The limiting groove 7 is located above the slide 6. There are several limiting grooves 7. The setting of multiple limiting grooves 7 allows the winch body 2 to be fixed in multiple positions within the placement groove 5, adapting to the operational needs of wire ropes of different lengths. The end of the electric push rod 14 is located inside the follower block 13, and a U-shaped rod 15 is fixedly installed on the output end. The length of one end of the U-shaped rod 15 inserted into the limiting groove 7 is longer than that of the other end, which is used to reduce the progress of the electric push rod 14 and at the same time improve the structural strength of the U-shaped rod 15, preventing the U-shaped rod 15 from deforming during the stress process. The ramp 1 is rotatably mounted on the base frame 25 of the catwalk. Between the base frame 25 and the ramp 1 are a conveyor frame 26 and a cantilever frame 27. The conveyor frame 26 and the cantilever frame 27 are used to transport goods. One end of the conveyor frame 26 is connected to the shaft of the cantilever frame 27, and the other end has an arc-shaped block. The arc-shaped block is used to abut the bottom of the ramp 1 to improve the stability of the connection between the conveyor frame 26 and the ramp 1. One end of the cantilever frame 27 is rotatably mounted on the base frame 25 of the catwalk, and the other end is connected to the shaft of the conveyor frame 26. The wire rope of the winch body 2 drum 21 passes around the guide wheel 3 at the front end of the ramp 1 and connects to the end of the conveyor frame 26 that contacts the ramp 1. The winch body 2 drives the ramp 1, the conveyor frame 26 and the cantilever frame 27 to unfold by winding and unwinding the wire rope. Without the assistance of external equipment, the winding and unwinding of the ramp 1 is automated.

[0011] Working principle: In use, the entire catwalk is in a retracted state, with ramp 1 and conveyor frame 26 in a horizontal position. The winch body 2 is flipped from the storage slot 4 to the placement slot 5 through the arc-shaped groove at the bottom. During this process, the connecting post 16 of the follower block 13 is inserted into the connecting hole 9 of the sliding block 8, connecting the winch body 2 and the sliding block 8. At the same time, the electric push rod 14 retracts, causing the U-shaped rod 15 to be inserted into the front limiting slot 7, fixing and limiting the winch body 2. When the winch body 2 is started, the wire rope drives the conveyor frame 26 upward against the ramp 1, causing both to move upward simultaneously. During this process, the winch body 2 is located at the front end of the ramp 1, and the wire rope extending from the winch is relatively short, effectively reducing the stress caused by the wire rope. The elastic elongation of the rope reduces the precision error caused by the load impact and start-stop inertia of the wire rope, accelerates vibration attenuation, avoids resonance risk, thereby improving the lifting accuracy and operational stability, and extending the service life of the wire rope. When the ramp 1 moves to the vertical position, the winch body 2 stops operating, the electric push rod 14 extends, the drive motor 12 drives the conveyor belt to operate, and then drives the sliding block 8 and the winch body 2 to move downwards until they reach the bottom of the placement slot 5. Then the winch body 2 continues to operate. The ramp 1 and the base frame 25 of the catwalk form an obtuse angle. During the movement of the winch body 2, the head is not too heavy when the ramp 1 is at an obtuse angle, which may lead to danger and improve safety.

[0012] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. The various components mentioned in this invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An electric catwalk winch, characterized in that, The system includes a winch body (2) and a ramp (1) on which the winch body (2) is mounted. A guide wheel (3) is mounted at the top of the ramp (1) to receive the wire rope of the winch body (2). A storage groove (4) is mounted at the front end of the ramp (1), and the winch body (2) is located in the storage groove (4). A placement groove (5) is mounted at the rear end of the storage groove (4) for the winch body (2) to move within it. A sliding groove (6) is mounted inside the placement groove (5). A sliding block (8) is provided in the groove (6), and a follower block (13) is provided on the winch body (2). The follower block (13) is connected to the sliding block (8). The winch body (2) moves in the placement groove (5) through the connection between the sliding block (8) and the follower block (13). A limiting groove (7) is provided on the groove (6). The limiting groove (7) cooperates with the follower block (13) to fix the position of the winch body (2) in the placement groove (5).

2. The electric catwalk winch according to claim 1, characterized in that, The winch body (2) includes a winch base (17) and two sets of winch motors (18) mounted on the winch base (17). Each set of winch motors (18) is provided with a steering box (19) and an encoder (20) that cooperates with the winch motor (18). A drum (21) loaded with wire rope is provided between the two steering boxes (19). A vertical baffle (22) is provided on the winch base (17). The baffle (22) covers the entire winch body (2). The lower surface of the winch base (17) has an insertion groove (23). An insertion block (24) is provided in the insertion groove (23).

3. An electric catwalk winch according to claim 2, characterized in that, The winch base (17) has an arc-shaped groove at the contact position of the connection between the storage groove (4) and the placement groove (5), which is used to flip the winch body (2) into the placement groove (5). The top of the baffle plate (22) rests on the front end of the storage groove (4), and the insertion block (24) is located in the insertion groove (23) and mounted on the placement groove (5), which is used to store the entire winch body (2) at the ramp (1).

4. An electric catwalk winch according to claim 3, characterized in that, Each side of the winch base (17) is provided with a set of follower blocks (13). The cross section of the follower block (13) is L-shaped with a clockwise rotation of 90 degrees. The vertical rod is fixedly connected to the winch base (17). The bottom of the horizontal rod is provided with a connecting column (16). The connecting column (16) is connected to the sliding block (8). An electric push rod (14) is provided on the inner side of the horizontal rod. A horizontal U-shaped rod (15) is provided on the electric push rod (14). One end of the U-shaped rod (15) is fixedly set on the electric push rod (14), and the other end extends into the limiting groove (7) to fix the winch body (2).

5. An electric catwalk winch according to claim 4, characterized in that, Both sides of the placement groove (5) are provided with sliding grooves (6). A conveyor belt driven by a drive motor (12) is provided in the sliding groove (6). The drive motor (12) is located at the end of the ramp (1), and its output end extends into the sliding groove (6) and drives the conveyor belt to run. A sliding block (8) is provided in the sliding groove (6). A part of the sliding block (8) extends out of the sliding groove (6). A connecting hole (9) is provided on this part. The connecting hole (9) cooperates with the connecting post (16) of the follower block (13) to connect the sliding block (8) and the follower block (13). The part of the sliding block (8) located in the sliding groove (6) has a through groove (10). A locking block is provided in the through groove (10) to fix the conveyor belt and the sliding block (8) to ensure that the conveyor belt and the sliding block (8) remain relatively stationary.

6. An electric catwalk winch according to claim 5, characterized in that, The limiting groove (7) is located above the slide groove (6). There are several limiting grooves (7). The end of the electric push rod (14) is located inside the follower block (13). A U-shaped rod (15) is fixedly installed on the output end. The length of one end of the U-shaped rod (15) inserted into the limiting groove (7) is longer than the other end, which is used to reduce the progress of the electric push rod (14) and improve the strength.

7. An electric catwalk winch according to claim 6, characterized in that, The ramp (1) is rotatably mounted on the base frame (25) of the catwalk. Between the base frame (25) and the ramp (1) are a conveyor frame (26) and a cantilever frame (27) for conveying goods. One end of the conveyor frame (26) is connected to the shaft of the cantilever frame (27), and the other end has an arc-shaped block for abutting the bottom of the ramp (1). One end of the cantilever frame (27) is rotatably mounted on the base frame (25) of the catwalk, and the other end is connected to the shaft of the conveyor frame (26). The wire rope of the winch body (2) drum (21) passes around the guide wheel (3) at the front end of the ramp (1) and connects to the end of the conveyor frame (26) that contacts the ramp (1) for driving the ramp (1), the conveyor frame (26) and the cantilever frame (27) to unfold.

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