Staggered hydraulic top cover lifting appliance

Abstract

The utility model provides a staggered hydraulic top cover lifting appliance which comprises a main beam, four hydraulic cylinders, a fixed pulley, a movable pulley and a lifting beam, the main beam is square, the middle part of the main beam is fixedly connected with two mounting plates which are arranged in parallel, a lifting shaft is arranged between the mounting plates, and the lifting shaft is used for being connected with a lifting hook of a crane; the fixed pulleys are fixedly installed at the four corners of the main beam, every two hydraulic cylinders are rotationally installed at the two ends of the installation plate in a staggered mode, the tail ends of telescopic shafts of the hydraulic cylinders are fixedly connected with steel wire ropes, the steel wire ropes are sequentially arranged on the fixed pulleys and the movable pulleys in a sleeving mode, and the movable pulleys are fixedly installed at the top end of the hanging beam. And the bottom end of the hanging beam is provided with a connecting hole and is fixedly connected with the top cover through a bolt. The telescopic stroke of the hydraulic cylinders is greatly increased through the staggered hydraulic cylinders, the error-tolerant rate of adjusting the length of the steel wire ropes is larger, the length of each steel wire rope is more convenient to adjust, and the whole top cover hoisting process is convenient to operate, high in reliability and higher in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of generator set top cover hoisting tools, in particular to a staggered hydraulic top cover hoist. Background Art

[0002] During the overhaul of the generator set of a hydropower station, the top cover of the unit needs to be lifted out so as to perform overhaul operations on the unit components. At present, four slings are usually used to lift the top cover. When the slings are tied to the top cover, the length of the slings needs to be adjusted to be consistent in order to achieve the purpose of lifting the top cover smoothly. However, there is a certain error in the length of the slings through bundling. Therefore, the adjustment operation of the lifting length is relatively complicated, the labor consumption is large, the reliability of the sling lifting is poor, and there are certain safety risks. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a staggered hydraulic top cover hanger. In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0004] A staggered hydraulic top cover hanger comprises a main beam and four hydraulic cylinders, a fixed pulley, a movable pulley and a hanging beam, the main beam being arranged in a square shape, and two parallel mounting plates are fixedly connected to the middle of the main beam, a hanging shaft is installed between the mounting plates, the hanging shaft is used to connect with the hook of the crane, the fixed pulley is fixedly installed at the four corners of the main beam, and the hydraulic cylinders are staggered and rotatably installed at both ends of the mounting plates in pairs, and steel wire ropes are fixedly connected to the ends of the telescopic shafts of the hydraulic cylinders, and the steel wire ropes are sequentially sleeved on the fixed pulley and the movable pulley, and the movable pulley is fixedly installed on the top end of the hanging beam, and a connecting hole is opened at the bottom end of the hanging beam and is fixedly connected to the top cover by bolts.

[0005] Furthermore, a sliding hole is opened on one of the mounting plates, a cylinder is fixedly connected to the other mounting plate, the hanging shaft is arranged in the sliding hole and the cylinder and is slidably connected to the sliding hole and the cylinder, the end of the cylinder is threadedly connected to a coaxial screw, and the end of the screw is fixedly connected to the hanging shaft.

[0006] Furthermore, four horizontally arranged rotating disks are fixedly connected to the main beam, and the rotating disks are respectively arranged on one side of the fixed pulley, and the steel wire rope is sequentially sleeved on the rotating disk, the fixed pulley and the movable pulley.

[0007] Furthermore, the fixed pulley and the movable pulley are provided with a plurality of pulley discs.

[0008] Furthermore, a plurality of evenly distributed support frames are fixedly connected to the bottom surface of the main beam.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The steel wire rope is pulled by the hydraulic cylinder, and the steel wire rope drives the movable pulley corresponding to its position to pull the hanging beam, so that the steel wire rope is retracted, and different hydraulic cylinders are driven to tighten the steel wire ropes on the hanging beams in different directions, so that all the steel wire ropes are in a taut state, so that the top cover is in a horizontal balanced state when lifting. The staggered hydraulic cylinders greatly increase the extension and retraction stroke of the hydraulic cylinders, and the tolerance for adjusting the length of the steel wire rope is greater, and it is more convenient to adjust the length of each steel wire rope, so it is more convenient to adjust the top cover to a horizontal state. The steel wire rope is adjusted by the hydraulic cylinder, and the operation is simpler, time-saving and labor-saving. The entire top cover lifting process is relatively convenient to operate, with strong reliability and higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0012] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the top view of the structure of an embodiment of the utility model.

[0014] In the above drawings: main beam 1, hydraulic cylinder 2, mounting plate 3, hanging shaft 4, fixed pulley 5, movable pulley 6, wire rope 7, hanging beam 8, sliding hole 9, cylinder 10, lead screw 11, rotating disk 12, support frame 13. DETAILED DESCRIPTION

[0015] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] like Figure 1~2 As shown, the utility model embodiment proposes a staggered hydraulic top cover hanger, including a main beam 1 and four hydraulic cylinders 2, a fixed pulley 5, a movable pulley 6, and a hanging beam 8. The main beam 1 is arranged in a square shape, and two mounting plates 3 arranged in parallel are fixedly connected to the middle part of the main beam 1, and a hanging shaft 4 is installed between the mounting plates 3. The hanging shaft 4 is used to connect with the hook of the crane, and the fixed pulley 5 is fixedly installed at the four corners of the main beam 1. The hydraulic cylinders 2 are staggered and rotatably installed at both ends of the mounting plates 3. The ends of the telescopic shafts of the hydraulic cylinders 2 are fixedly connected with steel wire ropes 7, and the steel wire ropes 7 are sequentially sleeved on the fixed pulley 5 and the movable pulley 6. The movable pulley 6 is fixedly installed on the top end of the hanging beam 8, and the bottom end of the hanging beam 8 is provided with a connecting hole and fixedly connected to the top cover by bolts.

[0017] The working principle is to first hang the hook of the crane on the hanging shaft 4 between the mounting plates 3, lower the entire main beam 1, fix the bottom end of the hanging beam 8 to the top cover with bolts, and then contract the staggered hydraulic cylinders 2 to pull the steel wire rope 7 together. Finally, make the steel wire rope 7 at different positions of the main beam 1 taut, and then conduct a trial lift to adjust the level of the main beam 1 before lifting. The entire top cover lifting process is relatively convenient to operate, with strong reliability and higher safety.

[0018] More specifically, Figure 2 As shown, a sliding hole 9 is provided on one of the mounting plates 3, a cylinder 10 is fixedly connected to the other mounting plate 3, the suspension shaft 4 is arranged in the sliding hole 9 and the cylinder 10 and is slidably connected with the sliding hole 9 and the cylinder 10, the end of the cylinder 10 is threadedly connected to a coaxial lead screw 11, and the end of the lead screw 11 is fixedly connected to the suspension shaft 4. When installing the hook of the crane, the lead screw 11 is rotated to pull the suspension shaft 4 out of the sliding hole 9, the hook is placed between the mounting plates 3, and the lead screw 11 is rotated in the opposite direction to allow the suspension shaft 4 to pass through the hook, so as to facilitate the connection between the suspension shaft 4 and the hook.

[0019] More specifically, Figure 2 As shown, four horizontally arranged rotating disks 12 are fixedly connected to the main beam 1, and the rotating disks 12 are respectively arranged on one side of the fixed pulley 5, and the steel wire rope 7 is sequentially sleeved on the rotating disk 12, the fixed pulley 5 and the movable pulley 6. The rotating disk 12 is used to pull the steel wire rope 7 to reduce the friction between the steel wire rope 7 and the fixed pulley 5, which is convenient for operation.

[0020] More specifically, Figure 2 As shown, the fixed pulley 5 and the movable pulley 6 are provided with a plurality of pulley plates. The hanging beam 8 is connected in the form of a pulley block to reduce the weight borne by the wire rope 7, so as to facilitate the lifting of larger items.

[0021] More specifically, Figure 1 As shown, a plurality of evenly distributed support frames 13 are fixedly connected to the bottom surface of the main beam 1. When installing the hanging beam 8, the main beam 1 is placed on the top cover through the support frames 13, so that the hanging beam 8 is fixedly connected to the top cover.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A staggered hydraulic top cover hanger, characterized in that: It includes a main beam and four hydraulic cylinders, a fixed pulley, a movable pulley and a hanging beam. The main beam is arranged in a square shape. Two parallel mounting plates are fixedly connected to the middle of the main beam. A hanging shaft is installed between the mounting plates. The hanging shaft is used to connect with the hook of the crane. The fixed pulley is fixedly installed at the four corners of the main beam. The hydraulic cylinders are staggered and rotatably installed at both ends of the mounting plates. The end of the telescopic shaft of the hydraulic cylinder is fixedly connected with a steel wire rope. The steel wire rope is sequentially sleeved on the fixed pulley and the movable pulley. The movable pulley is fixedly installed on the top end of the hanging beam. The bottom end of the hanging beam is provided with a connecting hole and fixedly connected to the top cover by bolts.

2. The staggered hydraulic top cover hanger according to claim 1, characterized in that: A sliding hole is opened on one of the mounting plates, and a cylinder is fixedly connected to the other mounting plate. The hanging shaft is arranged in the sliding hole and the cylinder and is slidably connected to the sliding hole and the cylinder. The end of the cylinder is threadedly connected to a coaxial lead screw, and the end of the lead screw is fixedly connected to the hanging shaft.

3. The staggered hydraulic top cover hanger according to claim 1, characterized in that: Four horizontally arranged rotating disks are fixedly connected to the main beam, and the rotating disks are respectively arranged on one side of the fixed pulley, and the steel wire rope is sequentially sleeved on the rotating disk, the fixed pulley and the movable pulley.

4. The staggered hydraulic top cover hanger according to claim 1, characterized in that: The fixed pulley and the movable pulley are provided with a plurality of pulley discs.

5. The staggered hydraulic top cover hanger according to claim 1, characterized in that: A plurality of evenly distributed support frames are fixedly connected to the bottom surface of the main beam.

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