Intelligent headframe fast rope wheel assembly

Abstract

A smart overhead crane fast rope pulley assembly, relating to the fields of petroleum and geological exploration technology, is used to solve the problem of inaccurate feedback on the load, lifting height, and speed of the traveling crane in existing technologies. The smart overhead crane fast rope pulley assembly is characterized by comprising a rotating shaft, a pulley frame, a rotary encoder, and an electronic pressure sensor. The rotating shaft is equipped with a fast rope pulley, and the rotating shaft also has a first bearing seat and a second bearing seat, distributed on both sides of the fast rope pulley. Each of the first and second bearing seats contains a bearing, and the rotating shaft mates with the bearings. The rotary encoder is connected to the rotating shaft. The beneficial effect is that it facilitates accurate measurement of the load, height, and speed of the fast rope.

Description

Technical Field

[0001] This invention relates to the fields of petroleum and geological exploration technology, specifically to an intelligent overhead crane fast rope pulley assembly. Background Technology

[0002] Currently, with the increasing automation and electrification of oil drilling, well workover, and geological exploration industries, drilling and workover equipment and wellhead automation equipment have increasingly higher requirements for accurate data on traveling block height, speed, and hook load. Previously, traveling block height and speed data were mainly used in overhead crane anti-collision systems. When the traveling block height or speed exceeded a certain safety range, the system would issue alarms, deceleration, and emergency braking commands. Obtaining this data primarily relied on a rotary encoder mounted on the drum shaft. This encoder installation method could only obtain the number of drum rotations, which was then calculated by the system program to obtain a relatively accurate traveling block height and speed data (theoretical calculation value). However, in actual operations, due to variations in the number of turns, diameter, and rope climbing angle of the wire rope in each layer of the drum, frequent unevenness in the drum rope arrangement, and changes in the above data after rope replacement, the traveling block height and speed data obtained from the encoder mounted on the drum shaft can only be relatively accurate. Furthermore, some drilling and workover equipment has a structurally separate drum body and drum shaft due to transmission structure design requirements. This requires the engagement and disengagement of a clutch for linkage. However, when the clutch is disengaged, the movement of the drum body and drum shaft is asynchronous. This structure fundamentally makes it impossible to obtain traveling block height and speed data by installing an encoder on the drum shaft. If this method is forced, the driller would have to lower the traveling block to the wellhead and re-zero it after each clutch engagement and disengagement operation. This increases the driller's workload and reduces operational efficiency. Moreover, when dealing with unstuck situations, the newly unstuck tubing needs to be immediately lifted and uncoupled, making it impossible to lower it back to the wellhead for zeroing.

[0003] Previously, hook load data primarily came from a mechanical-hydraulic tension sensor installed on the dead-line anchor. This sensor converted changes in tension at the dead-line end into changes in hydraulic oil pressure, which was then transmitted via hydraulic lines to a mechanical pointer-type weight indicator. The weight indicator's internal mechanism further converted these hydraulic pressure changes into mechanical deformation, driving the dial pointer to rotate. This method resulted in low accuracy and untimely data transmission. The dead-line tension sensor and weight indicator required frequent maintenance to ensure sufficient and clean hydraulic oil and to prevent blockages in joints, valves, and pipelines; otherwise, the data would be unreliable. The mechanical pointer-type weight indicator reads hook load data by counting the dial divisions. During operation, the pointer often vibrates violently, making it difficult for the driller to accurately determine the current hook load. This method is unsuitable for operations requiring accurate hook load readings, such as salvage. Currently, there are also methods to read hook load data by adding electronic hydraulic pressure sensors to hydraulic force sensors or mechanical weight indicators. It should be noted that this method still relies on the original hydraulic force sensor, only converting the oil pressure signal into an electrical signal. However, it still cannot solve the problem of inaccurate data. Once the original hydraulic force sensor, valve, or pipeline malfunctions, the electrical signal will be lost.

[0004] The end of the traveling pulley (moving pulley) that saves effort is the fast rope. The fast rope refers to the rope at one end of the roller, as opposed to the fixed rope. A rotary encoder is a device that generates an electrical signal based on the number of rotations. A rotary encoder includes an encoder and a rotor shaft rotatably mounted in an encoder housing. In existing technology, one type of encoder has a screw sleeve hole on its rotor shaft. By threading a screw through the screw sleeve hole, the screw is connected to the rotating component on the side being measured, thereby connecting the rotor component with the device being measured and achieving synchronous rotation of the two. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent overhead crane fast rope pulley assembly to solve the problem in the prior art that the load, lifting height, and speed of the traveling crane cannot be accurately fed back.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A smart overhead crane fast rope pulley assembly includes a rotating shaft, a pulley frame, a rotary encoder, and an electronic pressure sensor. The rotating shaft is equipped with a fast rope pulley, and the rotating shaft is also equipped with a first bearing seat and a second bearing seat. The first bearing seat and the second bearing seat are distributed on both sides of the fast rope pulley. Each of the first bearing seat and the second bearing seat is equipped with a bearing. The rotating shaft cooperates with the bearings, and the rotary encoder is connected to the rotating shaft.

[0008] The wheel frame includes a base, side frames, and a support frame. The side frames and the support frame are fixed to the base and distributed on both sides of the fast rope. The first bearing seat is connected to the side frame, the electronic pressure sensor is provided on the support frame, and the second bearing seat is placed on the electronic pressure sensor.

[0009] Furthermore, the first bearing housing is detachably connected to the side frame.

[0010] Furthermore, the support frame includes a lifting platform and an upright plate. The bottom of the upright plate is fixed to the base. Several ribs are provided between the upright plate and the lifting platform. The electronic pressure sensor is detachably connected to the lifting platform.

[0011] Furthermore, the upright plate is provided with extension connecting plates on both sides, and each extension connecting plate is provided with a hole for connecting external threaded parts.

[0012] Furthermore, the side frame is threaded with several first bolts, and the first bolts are threaded with guard plates. The guard plates and the side frame are distributed on both sides of the fast rope pulley.

[0013] Furthermore, the bottom of the second bearing housing is provided with a cut surface, which is positioned facing the electronic pressure sensor.

[0014] Furthermore, the support frame is provided with a first floating opening, which is located above the first bearing seat, and the first bearing seat passes through the first floating opening.

[0015] Furthermore, the protective plate is provided with a second floating opening, and the second bearing seat is disposed in the second floating opening.

[0016] Furthermore, the second bearing housing includes a detachable end cover, the rotary encoder includes a rotor shaft and an encoder housing, the rotor shaft is connected to the rotating shaft, and two parallel guide shafts are fixedly connected to the end cover. Two connecting plates are provided between the two guide shafts, and each connecting plate has a sleeve at both ends.

[0017] Located in the same connecting plate, the sleeve at one end of the connecting plate is slidably connected to one of the guide shafts, and the sleeve at the other end of the connecting plate is slidably connected to another guide shaft;

[0018] Each connecting plate is slidably connected to a slider, which includes a top plate, two side plates, and two hook plates. Each end of the top plate has a side plate, which is perpendicular to the top plate and extends downward from the top plate. Each side plate has a hook plate at its bottom, which extends inward from the two side plates and is parallel to the top plate. The top plate has an internal thread. The connecting plate has two notches, which are distributed on both sides of the connecting plate. The connection port is used to place the hook plates.

[0019] The encoder mount has multiple second bolts, each of which is connected to the internal thread of a slider.

[0020] Furthermore, each end of the guide shaft is fixedly connected to a bearing seat, and the bearing seat is fixedly connected to the end cap.

[0021] The beneficial effects are:

[0022] In use, this invention is positioned on one side of the fast rope roller (used for fast rope winding and unwinding). The fast rope is then positioned above the fast rope wheel, allowing the fast rope wheel to function as a fixed pulley. During the winding or unwinding process, the fast rope drives the fast rope wheel 3 to rotate. The fast rope wheel then activates the rotary encoder, generating an electrical signal reflecting the rotational angular velocity. This facilitates accurate calculation of the fast rope's winding and unwinding speed during control, and also allows for accurate estimation of the travel carriage's lifting height and speed. The bearings ensure that the fast rope wheel 3 rotates smoothly and synchronously with the fast rope, enabling it to accurately reflect the rope's motion parameters. The fast rope presses against the fast rope wheel, causing a downward pressure on the portion of the shaft connected to the second bearing seat. This downward pressure applies pressure to the electronic pressure sensor, which detects the pressure of this pressure trend. Based on this pressure value, the load on the travel carriage connected to the fast rope can be accurately estimated. This invention facilitates more accurate measurement of the release and take-up speed of the fast rope and the load on the fast rope, thereby facilitating accurate calculation of the lifting height, speed, and load of the scooter. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention;

[0024] Figure 2 for Figure 1 Rear view diagram;

[0025] Figure 3 for Figure 2 A schematic diagram of the AA cross-section;

[0026] Figure 4 This is a schematic diagram showing the placement of the second bearing housing on the electronic pressure sensor.

[0027] Figure 5 This is a schematic diagram illustrating the implementation of the slider;

[0028] Figure 6 A schematic diagram showing the connection between the slider, end cap, and slider;

[0029] In the diagram: 1. Rotary shaft, 11. First bearing housing, 12. Second bearing housing, 13. Bearing, 14. Cross-section, 15. End cap, 16. Guide shaft, 17. Shaft seat, 2. Electronic pressure sensor, 21. Rotor shaft, 22. Encoder housing, 3. Quick rope pulley, 4. Base, 41. Side frame, 42. Lifting platform, 43. Vertical plate, 44. Rib plate, 45. First bolt, 46. Guard plate, 47. First floating port, 48. Second floating port, 49. Extension connecting plate, 5. Connecting plate, 51. Sleeve, 52. Notch, 6. Top plate, 61. Side plate, 62. Hook plate, 63. Internal threaded part, 7. Second bolt. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0031] Reference Figures 1 to 6 ,

[0032] A smart overhead crane fast rope pulley assembly includes a shaft 1, a pulley frame, a rotary encoder, and an electronic pressure sensor 2. The shaft 1 has a fast rope pulley 3, a first bearing seat 11, and a second bearing seat 12, located on both sides of the fast rope pulley 3. Each bearing seat 11 and 12 contains a bearing 13, and the shaft 1 mates with the bearings 13. The rotary encoder is connected to the shaft 1 and includes a rotor shaft 21 and an encoder seat 22. The rotor shaft 21 has a hole for inserting a screw, and a threaded hole at the end of the shaft 1 mates with the screw, allowing the screw to be screwed into the shaft 1 for synchronous rotation of both the rotor shaft and the pulley. The pulley frame includes a base 4, side frames, and a support frame, which are fixed to the base 4. The side frames 41 and the support frame are located on both sides of the fast rope pulley 3. The first bearing housing 11 is fixed to the side frame. An electronic pressure sensor 2 is mounted on the support frame. The second bearing housing 12 is placed on the electronic pressure sensor 2. The electronic pressure sensor 2 includes a sensing block body and a pressure rod inserted into the sensing block body. The upper end of the pressure rod is fitted onto the second bearing housing 12, and a hole is provided at the lower end of the second bearing housing 12 for the pressure rod to pass through. The pressure rod includes a pad located between the second bearing housing 12 and the sensing block body. Cylindrical roller bearings are used.

[0033] In use, this invention is positioned on one side of the fast rope roller (used for fast rope winding and unwinding), and the fast rope is positioned above the fast rope wheel 3, thus making the fast rope wheel 3 function as a fixed pulley. During the winding or unwinding process of the fast rope roller, the fast rope drives the fast rope wheel 3 to rotate, which in turn drives the rotary encoder to generate an electrical signal reflecting the rotational angular velocity. This facilitates accurate calculation of the winding and unwinding speed of the fast rope during control, and also helps to accurately estimate the lifting height and speed of the traveling carriage. The bearings ensure that the fast rope wheel 3 rotates smoothly and synchronously with the fast rope, enabling it to accurately reflect the rope's motion parameters. The fast rope presses against the fast rope wheel 3, causing the part of the rotating shaft 1 connected to the second bearing seat 12 to have a downward pressure tendency. This downward pressure tendency applies pressure to the electronic pressure sensor 2, which detects the pressure of this pressure tendency. Based on this pressure value, the load on the traveling carriage connected to the fast rope can be accurately estimated. This invention facilitates more accurate measurement of the release and take-up speed of the fast rope and the load on the fast rope, thereby facilitating accurate calculation of the lifting height, speed, and load of the scooter.

[0034] Furthermore, the first bearing housing 11 is detachably connected to the side frame. This facilitates disassembly and maintenance of the invention. The first bearing housing 11 has multiple holes for threaded bolts, each hole containing a bolt. There is a certain margin between these holes and the corresponding bolt threads, which allows for slight radial movement of the bolt relative to the corresponding hole. These bolts are threaded onto the side frame 41.

[0035] Furthermore, the support frame includes a support platform 42 and an upright plate 43. The bottom of the upright plate 43 is fixedly connected to the base 4. Several ribs 44 are provided between the upright plate 43 and the support platform 42. The electronic pressure sensor 2 is detachably connected to the support platform 42. This helps to ensure the compressive strength of the support frame and ensures that the support frame can stably and safely support the electronic pressure sensor 2.

[0036] Furthermore, the upright plate 43 is provided with expansion connecting plates 549 on both sides, and each expansion connecting plate 49 has a hole for connecting external threaded parts. The expansion connecting plates are used to connect sensors with extended functions, which helps to ensure that the present invention can perform functional expansion operations.

[0037] Furthermore, several first bolts 45 are threaded onto the side frame, and protective plates 46 are threaded onto the first bolts 45. The protective plates 46 and the side frame are distributed on both sides of the fast rope pulley 3. The protective plates help to protect the fast rope pulley 3 and ensure the safety of the invention during operation.

[0038] Furthermore, the bottom of the second bearing housing 12 is provided with a cut surface 14, which faces the electronic pressure sensor 2. The cut surface structure helps to increase the space at the bottom of the second bearing housing 12, thereby facilitating the installation of the electronic pressure sensor.

[0039] Furthermore, the support frame is provided with a first floating port, which is located above the first bearing housing 11, through which the first bearing housing 11 passes. Furthermore, the guard plate 46 is provided with a second floating port 48, in which the second bearing housing 12 is disposed. When the fast rope pulley is under load, this allows for slight floating of the first and second bearing housings, thereby facilitating accurate transmission of pressure to the electronic pressure sensor.

[0040] Furthermore, the second bearing housing 12 includes a detachable end cap 15, on which two parallel guide shafts 16 are fixedly connected, and two connecting plates 5 are provided between the two guide shafts 16, with a sleeve 51 at each end of each connecting plate 5. Located in the same connecting plate 5, a sleeve 51 at one end of the connecting plate 5 is slidably connected to one of the guide shafts 16, and a sleeve 51 at the other end of the connecting plate 5 is slidably connected to another guide shaft 16. Each connecting plate 5 has a slider slidably connected to it. The slider includes a top plate 6, two side plates 61, and two hook plates 62. Each end of the top plate 6 has a side plate 61, which is perpendicular to the top plate 6 and extends downward from the top plate 6. Each bottom of the side plate 61 has a hook plate 62, which extends inward from the two side plates 61 and is parallel to the top plate 6. The top plate 6 has an internal threaded part 63. The connecting plate 5 has two notches 52, which are distributed on both sides of the connecting plate 5. The connection port is used to place the hook plates 62. Multiple second bolts 7 are fitted on the encoder seat 22, and each second bolt 7 is connected to the internal threaded part 63 of one slider. The encoder mount 22 is equipped with four second bolts 7, corresponding to four sliders. Two sliders are slidably connected to a connecting plate, and the other two sliders are slidably connected to two other connecting plates. Each slider is connected to one second bolt 7. In this invention, the connecting plate 5 can slide relative to the guide shaft 16, and the sliders can slide relative to the guide plate. This facilitates the adjustment of the spacing between the sliders, making it suitable for connecting rotary encoders of different sizes. When the second bolts 7 are tightened, one end of the second bolt 7 presses against the encoder mount 22, and the other end pulls the slider towards the connecting plate, thereby pulling the hook plate 62 tight onto the connecting plate. The encoder mount is thus fixed by multiple second bolts 7. The internally threaded component 63 includes an internally threaded hole. The top plate 6 has a hole aligned with and penetrating the internally threaded hole. The lower end of the second bolt 7 can pass through this hole and press against the connecting plate. When the slider slides on the connecting plate, the hook plate 62 slides with the slider to the position of the notch 52. When the hook plate 62 moves to the position of the notch, the slider can be removed from the connecting plate through the notch, thus facilitating slider replacement. Multiple slider models can be provided, the difference between which lies in the size of the internal thread hole of the internal thread component 63, thus facilitating compatibility with different types of second bolts. This allows the invention to be flexibly applied to rotary encoders of different sizes or models during maintenance.

[0041] Furthermore, each end of each guide shaft 16 is fixedly connected to a bearing seat 17, which in turn is fixedly connected to an end cover 15. The bearing seats can support the guide shaft 16 for a certain distance.

Claims

1. A smart overhead crane fast rope pulley assembly, characterized in that, The device includes a rotating shaft, a wheel frame, a rotary encoder, and an electronic pressure sensor. The rotating shaft is equipped with a fast rope pulley, a first bearing seat, and a second bearing seat. The first and second bearing seats are distributed on both sides of the fast rope pulley. Each of the first and second bearing seats contains a bearing. The rotating shaft cooperates with the bearings, and the rotary encoder is connected to the rotating shaft. The wheel frame includes a base, a side frame, and a support frame. The side frame and the support frame are fixedly connected to the base and are distributed on both sides of the fast rope wheel. The first bearing seat is connected to the side frame, the electronic pressure sensor is provided on the support frame, and the second bearing seat is placed on the electronic pressure sensor. The second bearing housing includes a detachable end cover. The rotary encoder includes a rotor shaft and an encoder housing. The rotor shaft is connected to the rotating shaft. Two parallel guide shafts are fixedly connected to the end cover. Two connecting plates are provided between the two guide shafts. Each connecting plate has a sleeve at both ends. Located in the same connecting plate, the sleeve at one end of the connecting plate is slidably connected to one of the guide shafts, and the sleeve at the other end of the connecting plate is slidably connected to another guide shaft; Each connecting plate is slidably connected to a slider, which includes a top plate, two side plates, and two hook plates. Each end of the top plate has a side plate, which is perpendicular to the top plate and extends downward from the top plate. Each side plate has a hook plate at its bottom, which extends inward from the two side plates and is parallel to the top plate. The top plate has an internal threaded part. The connecting plate has two notches, which are distributed on both sides of the connecting plate. The connecting port is used to place the hook plate. The encoder mount has multiple second bolts, each of which is connected to the internal thread of a slider.

2. The intelligent overhead crane fast rope pulley assembly according to claim 1, characterized in that, The first bearing housing is detachably connected to the side frame.

3. The intelligent overhead crane fast rope pulley assembly according to claim 1, characterized in that, The support frame includes a lifting platform and an upright plate. The bottom of the upright plate is fixed to the base. Several ribs are provided between the upright plate and the lifting platform. The electronic pressure sensor is detachably connected to the lifting platform.

4. The intelligent overhead crane fast rope pulley assembly according to claim 3, characterized in that, The upright plate is provided with extension connecting plates on both sides, and each extension connecting plate is provided with a hole for connecting external threaded parts.

5. The intelligent overhead crane fast rope pulley assembly according to claim 1, characterized in that, The side frame is threaded with several first bolts, and the first bolts are threaded with guard plates. The guard plates and the side frame are distributed on both sides of the fast rope pulley.

6. The intelligent overhead crane fast rope pulley assembly according to claim 1, characterized in that, The bottom of the second bearing housing has a cut surface, which is oriented towards the electronic pressure sensor.

7. The intelligent overhead crane fast rope pulley assembly according to claim 1, characterized in that, The support frame is provided with a first floating opening, which is located above the first bearing seat, and the first bearing seat passes through the first floating opening.

8. The intelligent overhead crane fast rope pulley assembly according to claim 5, characterized in that, The protective plate is provided with a second floating opening, and the second bearing seat is disposed in the second floating opening.

9. The intelligent overhead crane fast rope pulley assembly according to claim 8, characterized in that, Each of the guide shafts is fixed at both ends to a bearing seat, which is fixed to the end cap.

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