Oil transfer arm hoisting tool and hoisting method

Abstract

The present application relates to the field of heavy object lifting, and in particular to an oil transfer arm lifting tool, comprising a lifting base block that can be lifted, the lifting base block is provided with several lower lifting cables connected to the upper part of the oil transfer arm, several peripheral rods are provided around the lifting base block, the peripheral rods are rotatably connected to a cable pulley at one end away from the lifting base block, and the lifting base block is provided with a fine-tuning winch corresponding to each peripheral rod, the fine-tuning winch is wound with a bottom adjustment cable transmitted to the cable pulley, the bottom adjustment cable is detachably connected to the bottom of the oil transfer arm at one end away from the fine-tuning winch, all fine-tuning winches are electrically connected to a controller, and a camera for viewing the bottom of the oil transfer arm is provided below the lifting base block, so that the bottom end of the oil transfer arm can be adjusted remotely by controlling the fine-tuning winch, and the bottom end of the oil transfer arm column and the mounting base on the ground are aligned by means of the camera to reduce the lifting risk of large oil transfer arms.

Description

Technical Field

[0001] The present application relates to the field of heavy object lifting, and in particular to an oil transfer arm lifting tool and a lifting method. Background Art

[0002] The oil loading arm is used for loading and unloading oil from tankers at the dock. Generally, the oil loading arm has a column fixed to the ground. The upper end of the column is rotatably connected to the inner arm, and the end of the inner arm away from the column is rotatably connected to the outer arm. The end of the outer arm away from the inner arm is connected to a hose. The center of gravity of the oil loading arm is generally on the inner arm, so corresponding lifting rings are generally provided on the inner arm for lifting and installing the oil loading arm, or the column, inner arm and outer arm of the oil loading arm can be disassembled and lifted and installed separately.

[0003] For example, in a lifting device for a large oil transfer arm with an existing announcement number CN218988542U, after the fixed plate and a part of the oil transfer arm, such as a column, are connected, they are moved to an appropriate position, and then the column is lowered so that the column is close to the mounting base on the ground. Then, a worker makes a small adjustment or rotation on the bottom of the column so that the bottom of the column can be aligned with the mounting base for accurate placement.

[0004] Regarding the above-mentioned related technologies, even if the columns of some large oil transfer arms are disassembled and installed separately, there are still certain risks for workers. The process of hoisting the large oil transfer arm as a whole and lowering it to align with the installation base is even more risky. Summary of the Invention

[0005] In order to reduce the risks of a large oil transfer arm during the overall lifting and lowering process, the present application provides an oil transfer arm lifting tool and a lifting method.

[0006] In a first aspect, the present application provides an oil transfer arm lifting tooling that adopts the following technical solution.

[0007] A lifting tool for an oil transfer arm comprises a lifting base block which can be lifted, the lifting base block being provided with a plurality of lower lifting cables connected to the upper part of the oil transfer arm, a plurality of peripheral rods being provided around the lifting base block, a rotatable cable pulley being provided at one end of the peripheral rod away from the lifting base block, a fine-tuning winch being provided for each peripheral rod of the lifting base block, a bottom adjustment cable which is driven by the cable pulley being wound around the fine-tuning winch, the bottom adjustment cable being detachably connected to the bottom of the oil transfer arm at one end away from the fine-tuning winch, all the fine-tuning winches being electrically connected to a controller, and a camera for viewing the bottom of the oil transfer arm being provided below the lifting base block.

[0008] By adopting the above technical solution, the oil transfer arm is moved to the position corresponding to the mounting base based on the images of the bottom of the oil transfer arm viewed by several cameras. When there is a slight inclination between the bottom of the oil transfer arm and the mounting base, the bottom adjustment cable can be reeled in or out through the fine-tuning winch to align the bottom of the oil transfer arm and the mounting base, so that the worker can remotely control the oil transfer arm to be lowered smoothly and accurately onto the mounting base, and then the worker can tighten the connection between the oil transfer arm and the mounting base.

[0009] Optionally, the lifting base block includes an upper block, a lower block rotatably connected to the upper block and on which a circumferential rod, a lower lifting cable and a fine-tuning winch are set, the upper block is rotatably connected to a lower block gear coaxially fixedly connected to the lower block, the upper block is provided with a micro-rotating motor electrically connected to a controller, and the output shaft of the micro-rotating motor is coaxially fixedly connected to a micro-rotating motor gear meshing with the lower block gear.

[0010] By adopting the above technical solution, when there is an angle between the oil delivery arm and the mounting base on the horizontal plane, the lower block can be rotated at a small angle to better align the oil delivery arm and the mounting base.

[0011] Optionally, the bottom adjustment cable is connected to one end of the oil transfer arm and is provided with several cable wind tension sensors electrically connected to the controller, each cable wind tension sensor is connected to a cable wind rope, and each cable wind rope is connected to an anti-sway winch which is fixed in position and electrically connected to the controller.

[0012] By adopting the above technical solution, the bottom of the oil transfer arm is less likely to shake significantly during the lifting process, and the setting of the cable wind tension sensor also enables the cable wind rope to be better maintained in tension during the lowering of the oil transfer arm.

[0013] Optionally, the circumferential rod is fixedly connected to a rod end ring at one end away from the lifting base block, and the rod end ring is rotatably connected to a mounting ring for fixing a camera. The circumferential rod is provided with a ring motor that drives the mounting ring to rotate and is electrically connected to the controller.

[0014] By adopting the above technical solution, the position of the bottom of the oil transfer arm viewed by the camera can be changed to a certain extent, so as to better ensure that a large error is less likely to occur between the bottom of the oil transfer arm and the mounting base.

[0015] Optionally, the ring motor output shaft is coaxially fixedly connected to the ring motor gear, a rack groove is opened around the mounting ring, an arc rack engaged with the ring motor gear is fixedly connected in the rack groove, and the central angles of the arc rack and the rack groove are consistent and are at least the angle between two adjacent cameras.

[0016] By adopting the above technical solution, the camera is not easily rotated excessively.

[0017] Optionally, the circumferential rod is slidingly connected to a pressure-reducing block rotatably connected to the cable supply wheel at one end away from the lifting base block, the circumferential rod is provided with a pressure-reducing spring forcing the pressure-reducing block away from the circumferential rod, and the circumferential rod is provided with a bottom cable adjustment pressure sensor that abuts against the pressure-reducing spring at one end away from the pressure-reducing block and is electrically connected to the controller.

[0018] By adopting the above technical solution, workers can ensure that the bottom adjustment cable remains taut during remote control.

[0019] Optionally, the peripheral rod is provided with a limiting rack, the pressure relief block is slidably connected to a block rack that can engage with the limiting rack, and the pressure relief block is provided with a rack motor that moves the block rack and is electrically connected to the controller.

[0020] By adopting the above technical solution, when it is necessary to reel in the bottom adjustment cable to fine-tune the bottom of the oil transfer arm, the pressure relief block can remain stationary, so that the bottom adjustment cable can effectively adjust the bottom of the oil transfer arm to a certain small inclination angle.

[0021] Optionally, the pressure relief block is rotatably connected to an internal lead screw of the block which is driven to rotate by a rack motor, and the internal lead screw of the block is threadedly connected to a rack slider which is fixedly connected to the block rack.

[0022] By adopting the above technical solution, the pressure relief block can move stably, and the block rack is not easy to move randomly after moving to a certain position.

[0023] Optionally, the lifting base block is provided with an electronic level electrically connected to the controller.

[0024] By adopting the above technical solution, the cable wind rope can adjust the posture of the oil loading arm to a state tending to be vertical, so as to reduce the angle that needs to be fine-tuned in the subsequent oil loading arm.

[0025] In the second aspect, the present application provides an oil transfer arm hoisting method adopting the following technical solution.

[0026] A method for hoisting an oil transfer arm, using the above-mentioned oil transfer arm hoisting tool, specifically includes the following steps.

[0027] Step 1: Connect the lower suspension cable to the lifting ring on the upper part of the oil delivery arm, connect the bottom adjustment cable to the lifting ring on the lower part of the oil delivery arm, connect the cable wind tension sensor to the lifting ring on the oil delivery arm connected to the bottom adjustment cable, and then connect the cable wind cable to the cable wind tension sensor;

[0028] Step 2: Use a truck crane or floating crane to lift the upper block so that the oil transfer arm is floating;

[0029] Step 3: The fine-tuning winch reels the bottom adjustment cable until the pressure value detected by each bottom adjustment cable pressure sensor changes. At this time, the bottom adjustment cable is tightened. At the same time, the anti-sway winch reels the cable until the cable is visually no longer sagging.

[0030] Step 4: Move the upper block to the corresponding position according to the image seen by the camera, and then the anti-sway winch will reel in the cable wind rope until the tension values ​​detected by each cable wind tension sensor change and the upper block status displayed by the electronic level is horizontal;

[0031] Step 5: Move the upper block downward, and the anti-sway winch synchronously reels the cable wind rope so that the tension value detected by the cable wind tension sensor remains unchanged;

[0032] Step 6: When the bottom of the oil transfer arm is close to the mounting base, control the fine-tuning winch or micro-rotor motor to operate according to the image viewed by the camera until the bottom of the oil transfer arm and the mounting base are aligned to accurately lower the oil transfer arm onto the mounting base.

[0033] By adopting the above technical solution, workers can remotely lower the oil transfer arm more accurately, reducing the risks involved in the process of lifting and lowering the oil transfer arm.

[0034] In summary, this application has at least one of the following beneficial effects:

[0035] 1. Allow workers to remotely control the oil transfer arm to be lowered smoothly and accurately onto the installation base;

[0036] 2. The bottom of the oil transfer arm can be adjusted to a certain small inclination angle and rotated in the horizontal plane to ensure accurate alignment between the bottom of the oil transfer arm and the mounting base. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the main structure of this application;

[0038] Figure 2 It is a structural schematic diagram of the cross-section of the bottom end of the peripheral rod;

[0039] Figure 3 This is a functional module block diagram of this application.

[0040] Explanation of the accompanying reference numerals: 1. Hoisting base block; 2. Lower hoisting cable; 3. Peripheral rod; 31. Pressure relief spring; 32. Bottom cable adjustment pressure sensor; 33. Limit rack; 34. Block rack; 35. Rack motor; 36. Lead screw in block; 37. Rack slider; 38. Electronic level; 4. Cable pulley; 41. Anti-sway winch; 42. Cable wind tension sensor; 43. Rod end ring; 44. Mounting ring; 45. Ring motor; 46. Ring motor gear; 47. Rack groove; 48. Arc rack; 49. Pressure relief block; 5. Fine-tuning winch; 51. Bottom cable adjustment; 52. Controller; 53. Camera; 54. Upper block; 55. Lower block; 56. Lower block gear; 57. Micro-rotating motor; 58. Micro-rotating motor gear; 59. Cable wind rope. DETAILED DESCRIPTION

[0041] The present application is further described in detail below with reference to the accompanying drawings.

[0042] The embodiment of the present application discloses an oil loading arm hoisting tool, referring to Figure 1 , including a lifting base block 1 with a lifting ring on the upper part so that it can be lifted. The lifting base block 1 includes an upper block 54 and a lower block 55 installed on the lower surface of the upper block 54. The upper block 54 and the lower block 55 can both be cylindrical. Several lower lifting cables 2 are set on the bottom surface of the lower block 55. The bottom end of the lower lifting cable 2 is connected to the upper lifting ring of the oil transfer arm so that the oil transfer arm can be lifted.

[0043] Reference Figure 1 and Figure 2 Four fine-tuning winches 5 are fixedly connected to the periphery of the top surface of the lower block 55, and each fine-tuning winch 5 is wound with a bottom adjustment cable 51. A circumferential rod 3 is fixedly connected to the circumferential side of the lower block 55 corresponding to each fine-tuning winch 5. The circumferential rod 3 is inclined and the height of the circumferential rod 3 is lowest at one end away from the lower block 55. The bottom end of the circumferential rod 3 is away from the vertical center line of the lower block 55. A cable wheel 4 is installed at the bottom end of each circumferential rod 3, and each cable wheel 4 is transmitted by a corresponding bottom adjustment cable 51, so that the bottom adjustment cable 51 can be connected to the lifting ring at the bottom of the oil transfer arm, so that the bottom adjustment cable 51 can be wound up or released to adjust the small inclination angle of the bottom of the oil transfer arm. The bottom end of each circumferential rod 3 is slidably connected to a pressure relief block 49, which moves radially along the lower block 55 where the corresponding circumferential rod 3 is located. A pressure relief spring 31 is placed in the circumferential rod 3 to force the pressure relief block 49 away from the axis of the lower block 55. A bottom cable adjustment pressure sensor 32 is fixedly connected in the circumferential rod 3 to abut against one end of the pressure relief spring 31 away from the pressure relief block 49, so that when the bottom cable adjustment cable 51 is tensioned, the pressure value detected by the bottom cable adjustment pressure sensor 32 will change, so as to determine that the bottom cable adjustment cable 51 has been tensioned, and it can also help to ensure that each bottom cable adjustment cable 51 is not easily over-tensioned when the oil transfer arm is lifted.

[0044] Reference Figure 2 The pressure relief block 49 is slidably connected to a block rack 34 that can be exposed from the pressure relief block 49, and the block rack 34 is fixedly connected to a rack slider 37 that is slidably connected to the inner wall of the pressure relief block 49. The pressure relief block 49 is rotatably connected to a block inner lead screw 36 that is threadedly connected to the rack slider 37. The outer wall of the pressure relief block 49 is fixedly connected to a rack motor 35 whose output shaft is coaxially fixedly connected to the block inner lead screw 36. The inside of the peripheral rod 3 is fixedly connected to a limit rack 33 whose length direction is consistent with the moving direction of the pressure relief block 49, so that after determining that the bottom adjustment cable 51 is tensioned, the block rack 34 moves out of the pressure relief block 49 to engage with the limit rack 33, so that the position of the pressure relief block 49 and the cable wheel 4 is fixed, so that when it is necessary to reel in the bottom adjustment cable 51 to adjust the position of the oil delivery arm, the pressure relief block 49 is not easy to move at will, so that the bottom adjustment cable 51 can effectively adjust the oil delivery arm.

[0045] Reference Figure 1 The lower block 55 is coaxially connected to the upper block 54 for rotation. The upper surface of the upper block 54 is rotatably connected to a lower gear 56 coaxially fixedly connected to the lower block 55. The upper surface of the upper block 54 is fixedly connected to a micro-motor 57. The output shaft of the micro-motor 57 is coaxially fixedly connected to a micro-motor gear 58 engaged with the lower gear 56, so that the lower block 55 can be rotated and adjusted in a small angle, so that the oil delivery arm can be adjusted in a small range of angles in the horizontal plane.

[0046] Reference Figure 1 The bottom ends of the four circumferential rods 3 are fixedly connected to a common rod end ring 43. The bottom end of rod end ring 43 is coaxially connected to a mounting ring 44. Four cameras 53 are evenly fixedly connected to the bottom of the oil transfer arm around its own axis. Each camera 53 faces the bottom of the oil transfer arm, allowing workers to remotely observe the alignment between the bottom of the oil transfer arm and the mounting base. Rod end ring 43 is fixedly connected to a ring motor 45. The output shaft of ring motor 45 is coaxially fixedly connected to a ring motor gear 46. A rack groove 47 is defined on the circumferential side of mounting ring 44. An arcuate rack 48, whose axis is aligned with the axis of mounting ring 44, is fixedly connected within rack groove 47. Arcuate rack 48 meshes with ring motor gear 46. The central angle of arcuate rack 48 is at least 90°, allowing the four cameras 53 to obtain a relatively comprehensive view of the bottom of the oil transfer arm during a 90° rotation of mounting ring 44.

[0047] Reference Figure 1 Wind force sensors 42 are installed at the lifting rings at the bottom of the oil transfer arm, where the bottom adjustment cables 51 are connected. A wind cable 59 is connected to the end of the cable 59 away from the oil transfer arm. Each wind cable 59 corresponds to a bottom adjustment cable 51. An anti-sway winch 41 is anchored on the ground for reeling in and out the wind cables 59, preventing significant sway at the bottom of the oil transfer arm during the lifting process. Furthermore, an electronic level 38 is fixedly attached to the upper surface of the upper block 54, allowing the four wind cables 59 to be used to coordinately adjust the oil transfer arm to a horizontal position, minimizing the angle at which the bottom adjustment cables 51 adjust the bottom of the oil transfer arm.

[0048] Reference Figure 3 The fine-tuning winch 5, camera 53, micro-rotating motor 57, cable wind tension sensor 42, anti-sway winch 41, ring motor 45, bottom cable adjustment pressure sensor 32, rack motor 35 and electronic level 38 are all electrically connected to the controller 52. The controller 52 can be electrically connected to the external touch screen. The electrical connection method can be a wired connection or a wireless connection using a wireless transceiver module, so that workers can use the external touch screen to understand the situation during the lifting process of the oil transfer arm and make corresponding adjustments and operations in time.

[0049] The implementation principle of an oil transfer arm hoisting tool in an embodiment of the present application is: the oil transfer arm can be hoisted remotely to reduce the risks during the hoisting process.

[0050] The embodiment of the present application also discloses a method for hoisting an oil transfer arm, which specifically includes the following steps.

[0051] Step 1: Connect the lower suspension cable 2 to the lifting ring on the upper part of the oil delivery arm, connect the bottom adjustment cable 51 to the lifting ring on the lower part of the oil delivery arm, connect the cable wind tension sensor 42 to the lifting ring on the oil delivery arm connected to the bottom adjustment cable 51, and then connect the cable wind rope 59 to the cable wind tension sensor 42;

[0052] Step 2: Use a truck crane or floating crane to lift the upper block 54 so that the oil delivery arm is floating;

[0053] Step 3: The fine-tuning winch 5 reels the bottom adjustment cable 51 until the pressure value detected by each bottom adjustment cable pressure sensor 32 changes. At this time, the bottom adjustment cable 51 is tightened. At the same time, the anti-sway winch 41 reels the cable wind rope 59 until the cable wind rope 59 is visually no longer sagging.

[0054] Step 4: Move the upper block 54 to the corresponding position based on the image viewed by the camera 53, and then wind up the cable wind rope 59 with the anti-sway winch 41 until the tension values ​​detected by the cable wind tension sensors 42 change and the upper block 54 is shown as horizontal on the electronic level 38.

[0055] Step 5: Move the upper block 54 downward, and the anti-sway winch 41 simultaneously reels the cable wind rope 59 so that the tension value detected by the cable wind tension sensor 42 remains unchanged or changes within an allowable range;

[0056] Step 6: When the bottom of the oil transfer arm is close to the mounting base, the fine-tuning winch 5 or the micro-rotating motor 57 is controlled to operate according to the image viewed by the camera 53 until the bottom of the oil transfer arm and the mounting base are aligned to accurately lower the oil transfer arm onto the mounting base.

[0057] The implementation principle of an oil transfer arm hoisting method in an embodiment of the present application is as follows: when the oil transfer arm is just lifted and floated, the bottom adjustment cable 51 is tensioned and debugged so that even if a problem occurs, the oil transfer arm can be put back in time for inspection and elimination.

[0058] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An oil loading arm hoisting tool, comprising a hoisting base block (1) capable of being hoisted, characterized in that: The hoisting base block (1) is provided with a plurality of lower hoisting cables (2) connected to the upper part of the oil delivery arm, and a plurality of circumferential rods (3) are provided around the hoisting base block (1), and a rotatable cable wheel (4) is provided at one end of the circumferential rod (3) away from the hoisting base block (1). The hoisting base block (1) is provided with a fine-tuning winch (5) corresponding to each circumferential rod (3), and the fine-tuning winch (5) is wound with a bottom adjustment cable (51) driven by the cable wheel (4), and the bottom adjustment cable (51) is detachably connected to the bottom of the oil delivery arm at one end away from the fine-tuning winch (5). All fine-tuning winches (5) are electrically connected to a controller (52), and a camera (53) for viewing the bottom of the oil delivery arm is provided below the hoisting base block (1); the circumferential rod (3) is slidably connected to the cable wheel (4) at one end away from the hoisting base block (1) and a pressure relief block (49) rotatably connected thereto. ), the circumferential rod (3) is provided with a pressure-reducing spring (31) for forcing the pressure-reducing block (49) away from the circumferential rod (3), and the circumferential rod (3) is provided with a bottom cable pressure sensor (32) which abuts against one end of the pressure-reducing spring (31) away from the pressure-reducing block (49) and is electrically connected to the controller (52); the circumferential rod (3) is provided with a limit rack (33), the pressure-reducing block (49) is slidably connected to a block rack (34) capable of engaging with the limit rack (33), and the pressure-reducing block (49) is provided with a rack motor (35) for moving the block rack (34) and electrically connected to the controller (52); the pressure-reducing block (49) is rotatably connected to a block inner lead screw (36) driven to rotate by the rack motor (35), and the block inner lead screw (36) is threadedly connected to a rack slider (37) fixedly connected to the block rack (34).

2. The oil loading arm hoisting tool according to claim 1, characterized in that: The hoisting base block (1) includes an upper block (54), a lower block (55) rotatably connected to the upper block (54) and provided with a circumferential rod (3), a lower hoisting cable (2) and a fine-tuning winch (5); the upper block (54) is rotatably connected to a lower block gear (56) coaxially fixedly connected to the lower block (55); the upper block (54) is provided with a micro-rotating motor (57) electrically connected to the controller (52); and the output shaft of the micro-rotating motor (57) is coaxially fixedly connected to a micro-rotating motor gear (58) meshing with the lower block gear (56).

3. The oil loading arm hoisting tool according to claim 2, characterized in that: The bottom adjustment cable (51) is connected to one end of the oil delivery arm and is provided with a plurality of cable wind tension sensors (42) electrically connected to the controller (52), each cable wind tension sensor (42) is connected to a cable wind rope (59), and each cable wind rope (59) is connected to an anti-sway winch (41) which is fixed in position and electrically connected to the controller (52).

4. The oil loading arm hoisting tool according to claim 3, characterized in that: The circumferential rod (3) is fixedly connected to a rod end ring (43) at one end away from the lifting base block (1), and the rod end ring (43) is rotatably connected to a mounting ring (44) for fixing a camera (53). The circumferential rod (3) is provided with a ring motor (45) that drives the mounting ring (44) to rotate and is electrically connected to the controller (52).

5. The oil loading arm hoisting tool according to claim 4, characterized in that: The output shaft of the ring motor (45) is coaxially fixedly connected to the ring motor gear (46), a rack groove (47) is provided on the periphery of the mounting ring (44), an arc rack (48) meshing with the ring motor gear (46) is fixedly connected in the rack groove (47), and the central angles of the arc rack (48) and the rack groove (47) are consistent and are at least the angle between two adjacent cameras (53).

6. The oil loading arm hoisting tool according to claim 5, characterized in that: The hoisting base block (1) is provided with an electronic level (38) electrically connected to a controller (52).

7. A method for hoisting an oil loading arm, using the oil loading arm hoisting tool as claimed in claim 6, characterized in that: The specific steps include: Step 1: Connect the lower suspension cable (2) to the suspension ring on the upper part of the oil delivery arm, connect the bottom adjustment cable (51) to the suspension ring on the lower part of the oil delivery arm, connect the cable wind tension sensor (42) to the suspension ring connected to the bottom adjustment cable (51) on the oil delivery arm, and then connect the cable wind rope (59) to the cable wind tension sensor (42); Step 2: Use a truck crane or floating crane to lift the upper block (54) so ​​that the oil delivery arm is floating; Step 3: The fine-tuning winch (5) reels the bottom adjustment cable (51) until the pressure value detected by each bottom adjustment cable pressure sensor (32) changes. At this time, the bottom adjustment cable (51) is tensioned, and the anti-sway winch (41) reels the cable wind rope (59) until the cable wind rope (59) is visually no longer sagging. Step 4: Move the upper block (54) to the corresponding position according to the image viewed by the camera (53), and then use the anti-sway winch (41) to reel in the cable wind rope (59) until the tension values ​​detected by the cable wind tension sensors (42) change and the upper block (54) displayed on the electronic level (38) is horizontal; Step 5: The upper block (54) is moved downward, and the anti-sway winch (41) is synchronously reeling in the cable wind rope (59) so that the tension value detected by the cable wind tension sensor (42) remains unchanged; Step 6: When the bottom of the oil transfer arm is close to the mounting base, the fine-tuning winch (5) or the micro-rotating motor (57) is controlled to operate according to the image viewed by the camera (53) until the bottom of the oil transfer arm and the mounting base are aligned to accurately lower the oil transfer arm onto the mounting base.

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