Liquefied natural gas (LNG) unloading arm mounting tool

Abstract

The utility model belongs to the technical field of auxiliary installation tools, and particularly relates to an LNG unloading arm installation tool which comprises an installation disc, a fixing ring is arranged outside the installation disc in a sleeved mode, a clamping jaw fixing mechanism is installed on the fixing ring, a downward pressing sleeve is assembled on the installation disc in a sliding mode, a bearing positioning mechanism is installed at the bottom of the downward pressing sleeve, and a clamping jaw is installed on the bearing positioning mechanism. A plurality of fixing rods are connected to the mounting disc, a fixing sleeve is jointly connected between the fixing rods, a driving mechanism is mounted on the fixing sleeve, and the bearing claws can abut against and position bearings of different sizes under the extrusion action of a conical pressing head through cooperation of an adjusting assembly and a plurality of bearing claws. The mounting tool can be fixed on the LNG unloading arm through the clamping jaw fixing mechanism, and finally the pressing sleeve, the bearing clamping jaw and the bearing are driven by the driving mechanism to move towards the mounting position, so that the bearing is mounted in a pin shaft hole of the LNG unloading arm.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary installation tools, in particular to an LNG unloading arm installation tool. Background Art

[0002] An LNG unloading arm is a structure used for unloading and transporting liquefied natural gas (LNG). It is an articulated piping system installed on a dock (or floating terminal) for unloading. When an LNG carrier arrives at the receiving station's dedicated dock, the liquid phase unloading arm and unloading pipeline are used by the ship's cryogenic pumps to deliver LNG to the receiving station's storage tanks. Simultaneously, the BOG gas in the tanks is returned to the LNG carrier via the return gas pipeline and the gaseous return arm. The LNG unloading arm primarily consists of a riser, a rotating arm, a delivery pipe, a swivel joint, a balance wheel, and a counterweight. The delivery pipe is installed on the rotating arm and is the structure used for LNG transportation.

[0003] The rotating arm and the riser in the LNG unloading arm are usually connected by an axle pin type rotation connection. In order to reduce the friction between the axle pin, the rotating arm and the riser, the axle pin, the rotating arm and the riser are usually connected by bearings. When the bearings are worn out after long-term use, they need to be replaced. Usually, a heavy hammer is used to install the bearings on the LNG unloading arm, but the knocking method can easily damage the bearings. In order to facilitate the installation of the bearings on the LNG unloading arm, avoid the knocking method for installation, and increase the service life of the bearings, we propose an LNG unloading arm installation tool. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides an LNG unloading arm installation tool. By adjusting the assembly and cooperating with a number of bearing claws, the bearing claws can press and position bearings of different sizes under the extrusion of the conical pressure head. The installation tool can be fixed on the LNG unloading arm through the clamping claw fixing mechanism. Finally, the driving mechanism drives the downward pressure sleeve, the bearing claws and the bearing to the installation position, and then installs the bearing into the pin shaft hole of the LNG unloading arm, avoiding the need to use the knocking method to install the bearing into the pin shaft hole of the LNG unloading arm, reducing or avoiding the situation where the bearing is damaged by the knocking method when installing the bearing, and solving the background problem.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] An LNG unloading arm installation tool includes a mounting plate, an outer sleeve of the mounting plate is provided with a fixing ring, a plurality of connecting plates are connected between the mounting plate and the fixing ring, a clamping claw fixing mechanism is installed on the fixing ring, a pressing sleeve is slidably mounted on the mounting plate, a bearing positioning mechanism is installed on the bottom of the pressing sleeve, a plurality of fixing rods are fixedly connected to the upper end surface of the mounting plate, a fixing sleeve is fixedly connected between the fixing rods, and a driving mechanism for driving the pressing sleeve to rise and fall is installed on the fixing sleeve;

[0007] The bearing positioning mechanism includes several bearing claws, the outer surface of the pressing sleeve is fixedly sleeved with a hinged seat, the bearing claws are hingedly mounted on the hinged seat, a sliding plate is slidingly passed through the pressing sleeve, the bottom of the sliding plate is fixedly connected to a conical pressure head, and the top of the pressing sleeve is installed with an adjustment component for driving the conical pressure head to rise and fall.

[0008] Preferably, the adjustment assembly includes a screw, which is fixedly connected to the top of the sliding plate. The outer surface of the screw is threaded with an internally threaded transmission sleeve, and the bottom of the internally threaded transmission sleeve is rotatably connected to a connecting ring, which is fixedly connected to the downward pressure sleeve through several connecting rods.

[0009] Preferably, a toggle rod is fixedly connected to the outer surface of the internally threaded transmission sleeve.

[0010] Preferably, the clamp fixing mechanism includes several mounting seats, a rotating sleeve is rotatably mounted on the mounting seat, a screw rod is slidably passed through the rotating sleeve, a hook block is fixedly connected to the bottom of the screw rod, a threaded sleeve is fixedly connected to the bottom of the mounting plate, the pressing sleeve is slidably passed through the threaded sleeve, a nut sleeve is threadedly screwed on the outer surface of the threaded sleeve, the top of the nut sleeve is rotatably connected to the rotating seat, and a hinged plate is hingedly mounted between the rotating seat and the rotating sleeve.

[0011] Preferably, an internal threaded rotary sleeve is rotatably mounted on the bottom of the rotating sleeve, and the screw rod is threadedly provided on the internal threaded rotary sleeve.

[0012] Preferably, the outer surface of the screw rod is provided with a plurality of limit sliding openings, the inner wall of the rotating sleeve is fixedly connected with a limit sliding block, and the limit sliding block is slidably connected with the corresponding limit sliding openings.

[0013] Preferably, the driving mechanism includes an internal threaded rotating sleeve, which is rotatably mounted on the fixed sleeve. The outer surface of the pressing sleeve is fixedly sleeved with a mounting sleeve, and the outer surface of the mounting sleeve is provided with a threaded portion. The threaded portion on the outer surface of the mounting sleeve is threadedly connected to the internal threaded rotating sleeve.

[0014] Preferably, a plurality of turning handle rods are fixedly connected to the outer surface of the internally threaded rotating sleeve.

[0015] Preferably, the outer surface of the turning handle is fixedly covered with a rubber anti-skid sleeve, and the outer surface of the toggle rod is provided with anti-skid patterns.

[0016] Preferably, the pressing sleeve is an external hexagonal sleeve.

[0017] The utility model provides an LNG unloading arm installation tool. Compared with the existing technology, it has the following advantages:

[0018] The LNG unloading arm installation tool, through an adjustment component combined with a number of bearing claws, can enable the bearing claws to press and position bearings of different sizes under the squeezing action of a conical pressure head. The installation tool can be fixed on the LNG unloading arm through a clamping claw fixing mechanism. Finally, the driving mechanism drives the downward pressure sleeve, the bearing claws and the bearing to move to the installation position, and then installs the bearing into the pin shaft hole of the LNG unloading arm, avoiding the need to use a knocking method to install the bearing into the pin shaft hole of the LNG unloading arm, reducing or avoiding the situation where the bearing is damaged by the knocking method when installing the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the main structure of the utility model when viewed from above;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the main body of the utility model;

[0022] Figure 4 This is a structural diagram of the bearing positioning mechanism of the present utility model;

[0023] Figure 5 This is a schematic diagram of the top view of the clamping jaw fixing mechanism of the present invention;

[0024] Figure 6 This is a bottom view of the structure of the clamping jaw fixing mechanism of the present invention;

[0025] Figure 7 For the utility model Figure 1 A schematic diagram of the structure at center A;

[0026] Figure 8 For the utility model Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0027] In the figure: 1. Mounting plate; 2. Fixing ring; 3. Mounting sleeve; 4. Fixing rod; 5. Internally threaded rotating sleeve; 6. Bearing claw; 7. Screw rod; 8. Hook block; 9. Pressing sleeve; 10. Turning handle; 11. Hinge plate; 12. Toggle rod; 13. Rotating sleeve; 14. Nut sleeve; 15. Articulated seat; 16. Conical pressure head; 17. Slide plate; 18. Screw rod; 19. Connecting plate; 20. Threaded sleeve; 21. Internally threaded transmission sleeve; 22. Internally threaded rotating sleeve; 23. Fixing sleeve; 24. Connecting ring; 25. Limiting slide; 26. Connecting rod; 27. Mounting seat; 28. Rotating seat. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figure 1-8 The utility model provides a technical solution: an LNG unloading arm installation tool, an LNG unloading arm installation tool, comprising a mounting plate 1, a fixing ring 2 is provided on the outer sleeve of the mounting plate 1, a plurality of connecting plates 19 are connected between the mounting plate 1 and the fixing ring 2, a clamping claw fixing mechanism is installed on the fixing ring 2, a pressing sleeve 9 is slidably mounted on the mounting plate 1, a bearing positioning mechanism is installed at the bottom of the pressing sleeve 9, a plurality of fixing rods 4 are fixedly connected to the upper end surface of the mounting plate 1, a fixing sleeve 23 is fixedly connected between the plurality of fixing rods 4, and a driving mechanism for driving the pressing sleeve 9 to rise and fall is installed on the fixing sleeve 23;

[0030] The bearing positioning mechanism includes several bearing claws 6, and the outer surface of the pressing sleeve 9 is fixedly covered with a hinge seat 15. The bearing claws 6 are hingedly installed on the hinge seat 15. A sliding plate 17 is slidingly passed through the pressing sleeve 9. The bottom of the sliding plate 17 is fixedly connected to a conical pressure head 16. The top of the pressing sleeve 9 is installed with an adjustment component for driving the conical pressure head 16 to rise and fall.

[0031] During use, the bearing to be installed is placed between several bearing claws 6, and then the conical pressure head 6 is driven downward by the adjusting component. Under the squeezing action of the conical pressure head 6, several bearing claws 6 press the bearing into position, and then the installation tool is fixed on the LNG unloading arm through the clamping jaw fixing mechanism. Finally, the driving mechanism drives the downward pressure sleeve 9, the bearing claws 6 and the bearing to move to the installation position, and then the bearing is installed in the pin shaft hole of the LNG unloading arm, avoiding the need to use the knocking method to install the bearing into the pin shaft hole of the LNG unloading arm, reducing or avoiding the situation where the bearing is damaged due to the knocking method when installing the bearing.

[0032] The adjusting assembly includes a screw 18, which is fixedly connected to the top of the sliding plate 17. The outer surface of the screw 18 is threadedly connected to an internally threaded transmission sleeve 21. The bottom of the internally threaded transmission sleeve 21 is rotatably connected to a connecting ring 24. The connecting ring 24 is fixedly connected to the pressing sleeve 9 through several connecting rods 26. The outer surface of the internally threaded transmission sleeve 21 is fixedly connected to the toggle rod 12.

[0033] When using the adjustment assembly, rotate the toggle rod 12, the toggle rod 12 drives the threaded sleeve 21 to rotate, the threaded sleeve 21 is threadedly connected to the screw 18, and the slide plate 17 is slidably assembled on the pressing sleeve 9. When the threaded sleeve 21 rotates, it will drive the slide plate 17 and the conical pressure head 16 to move downward at the same time, and then the conical pressure head 16 will press against the inner ring of the bearing.

[0034] The clamping claw fixing mechanism includes several mounting seats 27, on which a rotating sleeve 13 is rotatably mounted, and a screw rod 7 is slidably penetrated on the rotating sleeve 13, and a hook block 8 is fixedly connected to the bottom of the screw rod 7. The bottom of the mounting plate 1 is fixedly connected to a threaded sleeve 20, and the pressing sleeve 9 is slidably penetrated on the threaded sleeve 20. The outer surface of the threaded sleeve 20 is threadedly screwed with a nut sleeve 14, and the top of the nut sleeve 14 is rotatably connected to a rotating seat 28. A hinged plate 11 is hingedly mounted between the rotating seat 28 and the rotating sleeve 13, and an internally threaded rotating sleeve 5 is rotatably mounted on the bottom of the rotating sleeve 13. The screw rod 7 is threadedly penetrated on the internally threaded rotating sleeve 5, and a plurality of groups of limit slides 25 are provided on the outer surface of the screw rod 7. The inner wall of the rotating sleeve 13 is fixedly connected to a limit slider, and the limit slider is slidably connected to the corresponding limit slide 25.

[0035] When using the clamp fixing mechanism, first rotate the nut sleeve 14. When the threaded sleeve 14 rotates, it will drive the rotating seat 28 to move up and down. When the rotating seat 28 moves up and down, it will pull the rotating sleeve 13 to rotate through the hinged plate 11. At this time, several screw rods 7 will be tightly pressed against the LNG unloading arm. Then rotate the internal threaded rotary sleeve 5. The internal threaded rotary sleeve 5 will pull the hook block 8 to move. The hook block 8 will be tightly positioned on the LNG unloading arm, thereby realizing the fixation of this installation tool.

[0036] The driving mechanism includes an internal threaded rotating sleeve 22, which is rotatably mounted on a fixed sleeve 23. The outer surface of the pressing sleeve 9 is fixedly sleeved with a mounting sleeve 3. The outer surface of the mounting sleeve 3 is provided with a threaded portion. The threaded portion on the outer surface of the mounting sleeve 3 is threadedly connected to the internal threaded rotating sleeve 22. The outer surface of the internal threaded rotating sleeve 22 is fixedly connected to a number of turning handle rods 10.

[0037] When using the driving mechanism, the turning handle rod 10 is rotated, and the turning handle rod 10 will drive the internal thread rotating sleeve 22 to rotate. When the internal thread rotating sleeve 22 rotates, it will drive the installation sleeve 3, the pressing sleeve 9, the hinge seat 15, the bearing hook 6 and the bearing to move downward, and the bearing will be squeezed into the pin shaft hole, thereby realizing the installation of the bearing.

[0038] The outer surface of the throttle lever 10 is fixedly covered with a rubber anti-skid sleeve, and the outer surface of the toggle lever 12 is provided with anti-skid patterns, thereby improving the anti-skid capabilities of the throttle lever 10 and the toggle lever 12.

[0039] The pressing sleeve 9 is an outer hexagonal sleeve.

[0040] Working principle: When in use, the bearing to be installed is placed between several bearing claws 6, and then the toggle rod 12 is rotated. The toggle rod 12 drives the threaded sleeve 21 to rotate. The threaded sleeve 21 is threadedly connected to the screw 18. The slide plate 17 is slidably assembled on the pressing sleeve 9. When the threaded sleeve 21 rotates, it drives the slide plate 17 and the conical pressure head 16 to move downward at the same time. Under the squeezing action of the conical pressure head 6, several bearing claws 6 press the bearings into position, and then the conical pressure head 16 presses against the inner ring of the bearing.

[0041] After the bearing is tightly positioned, rotate the nut sleeve 14. When the threaded sleeve 14 rotates, it will drive the rotating seat 28 to move up and down. When the rotating seat 28 moves up and down, it will pull the rotating sleeve 13 to rotate through the hinge plate 11. At this time, the several screw rods 7 will be tightly pressed against the LNG unloading arm. Then, rotate the internal threaded rotating sleeve 5. The internal threaded rotating sleeve 5 will pull the hook block 8 to move. The hook block 8 will be tightly positioned on the LNG unloading arm, thereby fixing the installation tool on the LNG unloading arm.

[0042] Finally, turn the handlebar 10, which will drive the internal thread rotating sleeve 22 to rotate. When the internal thread rotating sleeve 22 rotates, it will drive the installation sleeve 3, the pressing sleeve 9, the hinge seat 15, the bearing hook 6 and the bearing to move downward, and the driving mechanism will drive the pressing sleeve 9, the bearing claw 6 and the bearing to move to the installation position, and then install the bearing into the pin shaft hole of the LNG unloading arm, avoiding the need to use the knocking method to install the bearing into the pin shaft hole of the LNG unloading arm, reducing or avoiding the situation where the bearing is damaged by the knocking method when installing the bearing.

[0043] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An LNG unloading arm installation tool, comprising a mounting plate (1), characterized in that: The outer sleeve of the mounting plate (1) is provided with a fixing ring (2), a plurality of connecting plates (19) are connected between the mounting plate (1) and the fixing ring (2), a clamping claw fixing mechanism is installed on the fixing ring (2), a pressing sleeve (9) is slidably mounted on the mounting plate (1), a bearing positioning mechanism is installed at the bottom of the pressing sleeve (9), a plurality of fixing rods (4) are fixedly connected to the upper end surface of the mounting plate (1), a fixing sleeve (23) is fixedly connected between the plurality of fixing rods (4), and a driving mechanism for driving the pressing sleeve (9) to rise and fall is installed on the fixing sleeve (23); The bearing positioning mechanism includes a plurality of bearing claws (6), an outer surface of the pressing sleeve (9) is fixedly sleeved with a hinge seat (15), the bearing claws (6) are hingedly mounted on the hinge seat (15), a sliding plate (17) is slidably passed through the pressing sleeve (9), a conical pressure head (16) is fixedly connected to the bottom of the sliding plate (17), and an adjusting component for driving the conical pressure head (16) to rise and fall is installed on the top of the pressing sleeve (9).

2. The LNG unloading arm installation tool according to claim 1, characterized in that: The adjusting assembly includes a screw rod (18), which is fixedly connected to the top of the sliding plate (17); the outer surface of the screw rod (18) is screwed with an internal thread transmission sleeve (21); the bottom of the internal thread transmission sleeve (21) is rotatably connected to a connecting ring (24); and the connecting ring (24) is fixedly connected to the pressing sleeve (9) through a plurality of connecting rods (26).

3. The LNG unloading arm installation tool according to claim 2, characterized in that: The outer surface of the internally threaded transmission sleeve (21) is fixedly connected to a toggle rod (12).

4. The LNG unloading arm installation tool according to claim 3, characterized in that: The clamp fixing mechanism includes a plurality of mounting seats (27), a rotating sleeve (13) is rotatably mounted on the mounting seat (27), a screw rod (7) is slidably passed through the rotating sleeve (13), the bottom of the screw rod (7) is fixedly connected to a hook block (8), the bottom of the mounting plate (1) is fixedly connected to a threaded sleeve (20), the pressing sleeve (9) is slidably passed through the threaded sleeve (20), the outer surface of the threaded sleeve (20) is threadedly screwed with a nut sleeve (14), the top end of the nut sleeve (14) is rotatably connected to a rotating seat (28), and a hinge plate (11) is hingedly mounted between the rotating seat (28) and the rotating sleeve (13).

5. The LNG unloading arm installation tool according to claim 4, characterized in that: An internal threaded rotary sleeve (5) is rotatably mounted on the bottom of the rotating sleeve (13), and the screw rod (7) is threadedly mounted on the internal threaded rotary sleeve (5).

6. The LNG unloading arm installation tool according to claim 5, characterized in that: The outer surface of the screw rod (7) is provided with a plurality of groups of limit sliding openings (25), the inner wall of the rotating sleeve (13) is fixedly connected to the limit sliding block, and the limit sliding block is slidably connected to the corresponding limit sliding openings (25).

7. The LNG unloading arm installation tool according to claim 6, characterized in that: The driving mechanism comprises an internal thread rotating sleeve (22), the internal thread rotating sleeve (22) being rotatably mounted on a fixed sleeve (23), the outer surface of the pressing sleeve (9) being fixedly mounted with a mounting sleeve (3), the outer surface of the mounting sleeve (3) being provided with a threaded portion, and the threaded portion on the outer surface of the mounting sleeve (3) being threadedly connected to the internal thread rotating sleeve (22).

8. The LNG unloading arm installation tool according to claim 7, characterized in that: A plurality of turning handle bars (10) are fixedly connected to the outer surface of the internally threaded rotating sleeve (22).

9. The LNG unloading arm installation tool according to claim 8, characterized in that: The outer surface of the turning handle (10) is fixedly covered with a rubber anti-skid sleeve, and the outer surface of the toggle rod (12) is provided with anti-skid patterns.

10. The LNG unloading arm installation tool according to claim 9, characterized in that: The pressing sleeve (9) is an external hexagonal sleeve.

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