A drum dual rim adjustment device

Abstract

The utility model discloses a kind of reel double wheel rim adjusting devices, including the rim adjusting device of symmetric setting in the east and west both sides of reel;East rim adjusting device and west rim adjusting device are both by two annular ring plates and are formed by multiple connecting plate group welding;East and west both sides rim adjusting device is connected with original reel rope baffle by bolt;East and west both sides rim adjusting device is connected with original reel rope baffle by bolt;The device aims at reducing cost input, using existing resources, using mine hoist hoisting system of previous diversion tunnel vertical shaft vertical shaft method excavation scheme, technical transformation mine hoist hoisting system is used for steel lining hoisting.

Description

Technical Field

[0001] This utility model relates to the field of water diversion tunnel construction technology in the hydropower industry, and in particular to a drum double-rim adjustment device. Background Technology

[0002] In the hydropower industry, the excavation of high-pressure vertical shafts for water diversion tunnels in pumped-storage power stations typically employs either the direct shaft method or the reverse shaft method, depending on the excavation depth, borehole diameter, construction period requirements, and geological structure. Both construction methods generally utilize double-sided gantry cranes, truck cranes, or mine hoists as hoisting systems.

[0003] The earthwork excavation of the vertical shaft of the water diversion tunnel involved in this invention adopts the mine hoist system for the main shaft construction method. The mine hoist system mainly consists of a headframe, construction platform, personnel hoisting cage, slag bucket, and various supporting winches such as the platform winch, personnel hoisting winch, rock grab hoist stabilizing car, slag bucket winch, formwork hoist stabilizing car, and supporting wire ropes. The sheave on the headframe and all the fixed winches on the ground of this system are designed and arranged for the earthwork excavation stage of the water diversion tunnel, and do not meet the requirements for the hoisting and installation of the vertical shaft steel lining. In particular, the anchor bolts of the main drum fixed winch foundation are all deeply embedded in the concrete according to the design requirements of the earthwork excavation stage and are restricted by the installation position. Therefore, when the position of the main winch cannot be moved and rearranged, in order to ensure that the first sheave on the headframe and the wire rope exit angle α of the drum are less than 2°, and to ensure that the wire rope wound on the drum is arranged in sequence and does not get tangled together, it is necessary to design a drum double flange adjustment device to solve the above problems. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a drum double flange adjustment device, which aims to reduce cost investment, utilize existing resources, and re-use the mine hoisting system adopted in the previous water diversion tunnel vertical shaft main shaft excavation scheme to technically modify the mine hoisting system for steel lining hoisting.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A drum double flange adjustment device includes flange adjustment devices symmetrically arranged on the east and west sides of the drum; both the east flange adjustment device and the west flange adjustment device are composed of two annular ring plates welded together by multiple connecting plates; the east and west flange adjustment devices are connected to the drum rope guard plate by bolts.

[0006] Preferably, the distance between the east and west rim adjustment devices is 1751mm; the distance between the west rim adjustment device and the west drum rope stop plate is 209mm; and the distance between the east rim adjustment device and the east drum rope stop plate is 539mm.

[0007] Preferably, in the west rim adjustment device, the ring plate that is close to the drum rope guard plate is equipped with 12 sets of Ø22mm bolt holes; the two ring plates on the center side of the drum are fixed by welding through a connecting plate.

[0008] Preferably, in the east rim adjustment device, the ring plate that is close to the drum rope guard plate is equipped with 12 sets of Ø22mm bolt holes; the two ring plates on the center side of the drum are fixed by welding through a connecting plate.

[0009] Preferably, the thickness of the connecting plate is 20mm; the thickness of the outer ring plate is 15mm, and the thickness of the inner ring plate is 20mm.

[0010] Preferably, the wheel flange adjustment devices on both the east and west sides are each composed of two semi-circular ring plates, which together form a complete ring structure.

[0011] Preferably, the wheel rim adjustment devices on both sides are composed of two semi-circular ring plates, which together form a complete ring structure.

[0012] Preferably, a gap is left between the rim adjustment device and the outer surface of the drum, and a drum rope groove bushing is provided in the gap.

[0013] Preferably, the drum rope groove bushing has a cylindrical structure and is fitted onto the outer surface of the drum; the outer surface of the drum rope groove bushing has a threaded rope groove that cooperates with the wire rope.

[0014] Preferably, the wire rope is connected to the main winch at the top of the mine hoist frame, and the drum is used to hoist the shaft steel lining inside the high-pressure shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The use of this device reduces cost input and utilizes existing resources. The mine hoisting system used in the previous vertical shaft excavation scheme of the water diversion tunnel can be technically modified for steel lining hoisting. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the device of this utility model; Figure 2 This is a structural diagram of the rim adjustment device of this utility model; Figure 3 This is a schematic diagram of the structure of this utility model in conjunction with a mine hoist frame; In the diagram: West side flange adjustment device 1, ring plate 11, connecting plate 12, East side flange adjustment device 2, drum rope groove bushing 3, drum 4, wire rope 5, mine hoist frame 6, main winch 7, high-pressure vertical shaft 8. Detailed Implementation

[0017] Example 1: like Figures 1-2 As shown, a double-rim adjustment device for a drum includes rim adjustment devices symmetrically arranged on the east and west sides of the drum 4; the east rim adjustment device 2 and the west rim adjustment device 1 are both composed of two annular ring plates 11 welded together by multiple connecting plates 12; the east and west rim adjustment devices are connected to the drum rope guard plate by bolts.

[0018] Preferably, the distance between the east and west rim adjustment devices is 1751mm; the distance between the west rim adjustment device 1 and the west drum rope stop plate is 209mm; and the distance between the east rim adjustment device 2 and the east drum rope stop plate is 539mm.

[0019] Preferably, in the west rim adjustment device 1, the ring plate 11 that is close to the drum rope guard plate is equipped with 12 sets of Ø22mm bolt holes; the two ring plates 11 on the center side of the drum 4 are welded and fixed by the connecting plate 12.

[0020] Preferably, in the east rim adjustment device 2, the ring plate 11 that is close to the drum rope guard plate is equipped with 12 sets of Ø22mm bolt holes; the two ring plates 11 on the center side of the drum 4 are welded and fixed by the connecting plate 12.

[0021] Preferably, the thickness of the connecting plate 12 is 20 mm; the thickness of the outer ring plate 11 is 15 mm, and the thickness of the inner ring plate 11 is 20 mm.

[0022] Preferably, the wheel flange adjustment devices on both the east and west sides are each composed of two semi-circular ring plates 11, which together form a complete ring structure.

[0023] Preferably, the wheel rim adjustment devices on both sides are composed of two semi-circular ring plates 11, which together form a complete ring structure.

[0024] Preferably, a gap is left between the rim adjustment device and the outer surface of the drum 4, and a rope groove bushing 3 of the drum 4 is provided in the gap.

[0025] Preferably, the rope groove bushing 3 of the drum 4 is a cylindrical structure and is sleeved on the outer surface of the drum 4; the outer surface of the rope groove bushing 3 of the drum 4 has a threaded rope groove that cooperates with the wire rope 5.

[0026] Preferably, the wire rope 5 is connected to the main winch 7 at the top of the mine hoist frame 6, and the drum 4 is used to hoist the shaft steel lining inside the high-pressure shaft 8.

[0027] Example 2: like Figure 3 As shown, the installation steps and implementation methods for the rim adjustment plate are as follows: Wire rope 5 is wound onto drum 4: The drive motor is started to rotate drum 4. Wire rope 5 is wound from the east side of drum 4, with 8 turns at intervals as a safety loop reserved on drum 4. These 8 turns not only consider the safety friction coefficient when drum 4 is lowered to the limit hoisting position, but also consider the length of wire rope 5, i.e., cost savings. This 8-turn safety loop is exactly below the east side flange adjustment device 2, with a width of 539mm. The drum 4 pressure plate is used to evenly and tightly fix and tighten the wire rope 5 in the safety loop. The diameter of wire rope 5 is compressed and flattened to about 2 / 3. After the safety loop of wire rope 5 on drum 4 is fixed, the winch is started to rotate and arrange the wire rope 5 to the west side flange adjustment device 1, which is 209mm away from the west side drum rope stop plate. The first layer of wire rope 5 is then completed on drum 4.

[0028] Adjustment device installation: The two semi-circular ring plates 11 that have been prefabricated on the east and west sides are connected to the drum rope guard plate with M20×65mm, 8.8 grade high strength bolts. The two semi-circular ring plates 11 are combined to form a complete drum rope guard plate adjustment device. The purpose of this design is to improve the operability and convenience of installation.

[0029] Steel wire rope 5 winding layer limit test: After the flange adjustment device is installed, the motor is started to drive the drum 4 to rotate to the upper limit lifting point position required for steel lining hoisting. The number of steel wire winding layers according to the 3 times ratio is checked to see if the rope capacity is met. The unloaded rope is lowered to the hoisting limit position, and the number of safety loops reserved in steel wire rope 5 is verified by visual inspection to see if the requirements are met.

[0030] 75% and 100% load tests: Under the test load ratio, the main hook is lifted and lowered three times with the load throughout its full stroke. The main test is to check whether the wire rope 5 is neatly arranged in the rope groove, and to check for any "skipping," mutual compression, or irregular arrangement of the wire rope 5 during multi-layer winding. If any of these occur, the angle of the circular ring plate 11 on the east and west sides near the center of the drum 4 needs to be finely adjusted. During the descent of the lifting system, especially when the wire rope 5 approaches the adjustment device, observe whether the friction between the wire rope 5 and the adjustment device causes the device to tilt upwards during the rope exiting the drum 4, to avoid shearing with the bolts connecting to the drum's rope stop plate.

[0031] After the no-load and load tests are completed, and the structure of the drum 4 flange adjustment device is found to be free from deformation, the connecting bolts are not loose, the wire rope 5 of the drum 4 is not squeezed or deformed, the derrick structure is normal, the disc brake of the drum 4 is sensitive, and all safety protection specifications are normal, then the modified drum 4 flange adjustment device can be put into operation.

Claims

1. A drum double-flange adjustment device, characterized in that, It includes rim adjustment devices symmetrically arranged on the east and west sides of the drum (4); the east rim adjustment device (2) and the west rim adjustment device (1) are both composed of two annular ring plates welded together by multiple connecting plates; the east and west rim adjustment devices are connected to the drum rope guard plate by bolts.

2. The double-flange adjustment device for a drum according to claim 1, characterized in that: The distance between the west rim adjustment device (1) and the west drum rope stop plate is less than the distance between the east rim adjustment device (2) and the east drum rope stop plate.

3. The double-flange adjustment device for a drum according to claim 1, characterized in that: In the west rim adjustment device (1), the ring plate that is close to the drum rope guard plate is equipped with multiple sets of bolt holes; the two ring plates on the center side of the drum are fixed by welding through a connecting plate.

4. The double-flange adjustment device for a drum according to claim 1, characterized in that: In the east side rim adjustment device (2), the ring plate that is close to the drum rope guard plate is equipped with multiple sets of bolt holes; the two ring plates on the center side of the drum are fixed by welding through a connecting plate.

5. The double-flange adjustment device for a drum according to claim 1, characterized in that: A gap is left between the wheel flange adjustment device and the outer surface of the drum (4), and a drum rope groove bushing (3) is provided in the gap.

6. A drum double-flange adjustment device according to claim 5, characterized in that: The drum rope groove bushing (3) is a cylindrical structure and is fitted on the outer surface of the drum (4); the outer surface of the drum rope groove bushing (3) has a threaded rope groove that cooperates with the wire rope (5).

7. A drum double-flange adjustment device according to claim 6, characterized in that: The wire rope (5) is connected to the main winch (7) at the top of the mine hoist frame (6), and the drum (4) is used to hoist the steel lining of the shaft in the high-pressure shaft (8).

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