Dismounting and mounting device for rotating wheel turning-over lifting appliance

Abstract

The utility model discloses a dismounting and mounting device for a rotating wheel turnover lifting appliance, which relates to the technical field of lifting appliance dismounting and mounting and comprises a bearing tray, a thrust bearing, a rotating table, a prism rod, a plate rod and a jack, a groove is formed in the middle of the bearing tray; the thrust bearing is arranged in the groove of the bearing tray; the rotating table is connected with the thrust bearing, a connecting groove with a polygonal section is formed in the upper end of the rotating table, and a plurality of side holes are distributed in the circumference of the side face of the rotating table. The lower ends of the prism rods are matched and connected with the connecting grooves, and the upper ends of the prism rods are connected with bolt counter bores; the plate rod is connected into the side hole and used for rotating the rotating table. The rotating wheel turning-over lifting appliance has the advantages that the bolts in the rotating wheel turning-over lifting appliance can be conveniently disassembled and assembled in narrow spaces by the aid of the rotating wheel turning-over lifting appliance.

Description

Technical Field

[0001] The utility model relates to the technical field of sling disassembly and assembly, in particular to a device for disassembling and installing a rotary wheel-turning sling. Background Art

[0002] The runner is the core component of a hydroelectric generator set, with a diameter of several meters and a weight of over one hundred tons. During Class A maintenance on the runner, an M140 bolt is used to connect the sling to the end face of the runner. This is then connected to the sling via a rope, so that force is applied to one side of the runner, causing it to flip over. Bolt holes are provided at the top of the sling. Bolts pass upward through the bolt holes from the inside of the sling and then connect to screw holes on the end face of the runner, thus installing the sling on the runner. Due to the narrow interior of the sling and the heavy weight of the bolts, when removing or installing the sling, one needs to reach through the opening on the side of the sling to support the edge of the bolt and then use a hexagonal wrench to turn the bolt. This makes disassembling and installing the bolts in such a narrow space extremely inconvenient. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a device for dismantling and installing a rotary wheel turning sling, so as to facilitate dismantling and installing bolts inside the rotary wheel turning sling in a narrow space.

[0004] In order to solve the above problems, the present invention adopts the following technical solutions:

[0005] A device for dismantling and installing a turntable turning hoist comprises a bearing tray, a thrust bearing, a rotating table, a prismatic rod, a plate rod and a jack; a groove is provided in the middle of the bearing tray; the thrust bearing is arranged in the groove of the bearing tray; the rotating table and the thrust bearing are connected, a connecting groove with a polygonal cross-section is provided at the upper end of the rotating table, and several side holes are distributed on the circumference of the side of the rotating table; the lower end of the prismatic rod is matched and connected to the connecting groove, and the upper end of the prismatic rod is used for connecting to a bolt countersunk hole; the plate rod is connected to the side hole and is used to rotate the rotating table; the jack is provided at the lower end of the bearing tray and is used to support the bearing tray.

[0006] Furthermore, one end of the plate rod is provided with a side convexity, and the side hole is a stepped hole, including a small hole end and a large hole end. The small hole end is provided with a side groove for passing the side convexity, and the side convexity can be rotated in the large hole end.

[0007] Furthermore, the prism rod and the rotating platform are fixedly connected by welding.

[0008] Furthermore, the prism rod is a hexagonal prism, and the prism rod matches the countersunk hole of the hexagon socket bolt of M140.

[0009] Furthermore, the jack adopts a screw jack or a hydraulic jack.

[0010] Furthermore, a handle is provided at one end of the plate rod, and anti-slip stripes are provided on the handle.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] 1. When disassembling and assembling the turning spreader, the jack at the bottom provides an upward supporting force to the bearing tray, thereby supporting the prismatic rod and bolts. There is no need to reach into the spreader, making it easier to disassemble and assemble the bolts.

[0013] 2. By connecting the turntable to the thrust bearing, the plate rod can be extended into the plate rod from the side opening of the spreader, and the plate rod is inserted into the side hole of the turntable, thereby driving the turntable to rotate, making it easier to disassemble and assemble the bolts in a narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a rotating wheel and a turning sling in the application object of the utility model.

[0015] Figure 2 It is a cross-sectional view of an embodiment of the utility model in use.

[0016] Figure 3 It is an exploded view of an embodiment of the present invention.

[0017] Figure 4 yes Figure 3 Schematic diagram of the rotating stage, prismatic rod and plate rod.

[0018] Figure 5 yes Figure 4 Transverse cross-sectional view of the rotating table, prismatic rods, and plate rods.

[0019] Numbers in the figure: 1. Turntable; 2. Turning hoist; 3. Bolt; 4. Jack; 5. Bearing tray; 51. Groove; 6. Rotating table; 61. Connecting groove; 7. Plate rod; 8. Prismatic rod; 9. Thrust bearing; 10. Handle; 11. Side convexity; 12. Side hole; 121. Small hole end; 122. Large hole end; 13. Side groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] like Figure 1As shown, to facilitate lifting and turning the runner 1, a turning sling 2 is connected to the runner 1. The top of the turning sling 2 has a through hole, through which an M140 bolt 3 is passed and then connected to a screw hole on the end face of the runner 1. Due to the narrow interior of the turning sling 2, it is difficult to reach in and remove or install the M140 bolt 3. Therefore, a device for removing and installing the turning sling is designed.

[0022] like Figures 2 to 5 As shown, the device for removing and installing a turntable turning sling of this embodiment includes a bearing tray 5, a thrust bearing 9, a rotating platform 6, a prismatic rod 8, a plate rod 7, and a jack 4. A groove 51 is defined in the middle of the bearing tray 5; the thrust bearing 9 is disposed within the groove 51 of the bearing tray 5. The rotating platform 6 and the thrust bearing 9 are connected. A connecting groove 61 with a polygonal cross-section is defined at the upper end of the rotating platform 6. Specifically, a shaft portion is provided at the lower end of the connecting groove 61, which is inserted into the inner hole of the thrust bearing 9 and connected to the thrust bearing 9. The thrust bearing 9 generates a supporting force on the connecting groove 61, thereby ensuring smooth rotation of the rotating platform 6.

[0023] The lower end of the prismatic rod 8 is matched and connected with the connecting groove 61. In this embodiment, the prismatic rod 8 is a hexagonal prism. The prismatic rod 8 is matched with the countersunk hole of the hexagon socket bolt 3 of M140. The upper end of the prismatic rod 8 is used to connect the countersunk hole of the bolt 3. The prismatic rod 8 and the rotating table 6 are fixedly connected by welding. When the rotating table 6 is rotated, the prismatic rod 8 can be driven to rotate, thereby driving the rotation of the bolt 3.

[0024] In order to facilitate the rotation of the turntable 6 in a narrow space, several side holes 12 are distributed on the circumference of the side of the turntable 6. The plate rod 7 passes through the opening on the side of the turning sling 2 and is connected to the side hole 12. Rotating the plate rod 7 can drive the turntable 6 to rotate.

[0025] Since the plate rod 7 and the side hole 12 are loosely fitted, the plate rod 7 is prone to slipping and disengaging from the side hole 12 during rotation, which can easily injure the hand. Therefore, a side protrusion 11 is provided at one end of the plate rod 7, and the side hole 12 is a stepped hole, including a small hole end 121 and a large hole end 122. The small hole end 121 is provided with a side groove 13 for passing through the side protrusion 11, and the side protrusion 11 can be rotated into the large hole end 122. During use, the side protrusion 11 passes through the small hole end 121 through the side groove 13 and enters the large hole end 122. Then, after the plate rod 7 is rotated to a certain angle, it will not disengage from the side hole 12 due to the obstruction of the side protrusion 11, thereby ensuring the safety of the operator.

[0026] In order to facilitate the operator to hold the plate stably, a handle 10 is provided at one end of the plate rod 7, and anti-slip stripes are provided on the handle 10.

[0027] The bolt 3 of M140 is heavy and needs to be supported during the disassembly process to prevent it from falling suddenly and causing a safety threat and damaging the bolt 3. Therefore, a jack 4 is set at the lower end of the bearing tray 5. The jack 4 is used to support the bearing tray 5. The jack 4 adopts a screw jack 4 or a hydraulic jack 4.

[0028] During disassembly, the bearing tray 5, thrust bearing 9, rotating table 6, and prismatic rod 8 are first lowered into the bottom of the turning hoist 2. The jack 4 is then lowered and raised to lift the aforementioned components, thereby connecting the upper end of the prismatic rod 8 to the countersunk hole of the bolt 3. The plate rod 7 is then inserted through the side opening of the turning hoist 2 and inserted into the side hole 12. The plate rod 7 is continuously rotated and replaced with the side hole 12 opposite the side opening of the turning hoist 2. The bolt 3 is then removed and the turning hoist 2 is removed from the runner 1. During installation, the plate rod 7 rotates in the opposite direction. This device facilitates the removal and installation of the bolt 3 within the narrow space inside the turning hoist 2.

[0029] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A device for removing and installing a rotary turning sling, characterized in that: include: A bearing tray (5), wherein a groove (51) is provided in the middle of the bearing tray (5); A thrust bearing (9), the thrust bearing (9) being disposed in a groove (51) of the bearing tray (5); A rotating platform (6), the rotating platform (6) and the thrust bearing (9) are connected, the upper end of the rotating platform (6) is provided with a connecting groove (61) with a polygonal cross section, and the side surface of the rotating platform (6) is provided with a plurality of side holes (12) distributed around the circumference; A prismatic rod (8), the lower end of the prismatic rod (8) being matched and connected to the connecting groove (61), and the upper end of the prismatic rod (8) being used for connecting to a bolt countersunk hole; a plate rod (7), the plate rod (7) being connected to the side hole (12) and being used for rotating the rotating platform (6); A jack (4) is provided at the lower end of the bearing tray (5) and is used to support the bearing tray (5).

2. The device for removing and installing the rotary wheel turning sling according to claim 1, characterized in that: One end of the plate rod (7) is provided with a side convexity (11), and the side hole (12) is a stepped hole, including a small hole end (121) and a large hole end (122). The small hole end (121) is provided with a side groove (13) for passing the side convexity (11), and the side convexity (11) can be rotated in the large hole end (122).

3. The device for removing and installing the rotary wheel turning sling according to claim 1, characterized in that: The prism rod (8) and the rotating platform (6) are fixedly connected by welding.

4. The device for removing and installing the rotary wheel turning sling according to claim 1, characterized in that: The prism rod (8) is a hexagonal prism, and the prism rod (8) matches the M140 hexagon socket bolt countersunk hole.

5. The device for removing and installing the rotary wheel turning sling according to claim 1, characterized in that: The jack (4) is a screw jack (4) or a hydraulic jack (4).

6. The device for removing and installing the rotary wheel turning sling according to claim 1, characterized in that: One end of the plate rod (7) is provided with a handle (10), and the handle (10) is provided with anti-slip stripes.

Images