Hydraulic telescopic top cover lifting appliance

Abstract

The utility model provides a hydraulic telescopic top cover sling, including main beam, a plurality of hydraulic cylinder, a plurality of fixed pulley, movable pulley and hanging beam, the main beam is used for bearing the hydraulic cylinder and fixed pulley that are evenly distributed and set and combined, the middle part of the main beam is fixedly connected with mounting plate, between the mounting plate is fixedly connected with a hanging shaft, the hanging shaft is fixedly connected with the movable pulley, and the hanging beam is fixedly connected with the movable pulley. The lifting shaft is used for being connected with a lifting hook of a crane, the hydraulic cylinder is hinged to the middle of the installation plate and is parallel to the corresponding fixed pulley, the tail end of a telescopic shaft of the hydraulic cylinder is fixedly connected with a steel wire rope, the steel wire rope is sequentially arranged on the fixed pulley and the movable pulley in a sleeving mode, and the movable pulley is fixedly installed at the top end of the lifting 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 steel wire rope is adjusted through the hydraulic cylinder, operation is simpler, time and labor are saved, 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 hydraulic telescopic 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 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 hydraulic telescopic top cover hanger. In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0004] A hydraulic telescopic top cover hanger, comprising a main beam, a plurality of hydraulic cylinders, a plurality of fixed pulleys, a movable pulley and a hanging beam, wherein the main beam is used to carry hydraulic cylinders and fixed pulleys that are evenly distributed and combined in a set, a mounting plate is fixedly connected to the middle of the main beam, a hanging shaft is fixedly connected between the mounting plates, the hanging shaft is used to be connected to a hook of a crane, the hydraulic cylinder is hinged at the middle of the mounting plate and is arranged parallel to the corresponding fixed pulley, a steel wire rope is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder, 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, 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, the fixed pulley and the movable pulley are provided with a plurality of pulley discs.

[0006] Furthermore, the number of the fixed pulleys is not less than three, and the number of the hydraulic cylinders, movable pulleys and hanging beams is the same as the number of the fixed pulleys.

[0007] Furthermore, an arc-shaped groove is provided on the hanging shaft, and the groove is used to limit the hook.

[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 then the hydraulic cylinder is driven separately 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 steel wire rope is adjusted by the hydraulic cylinder, which makes the operation simpler, saves time and effort, and 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, groove 9, support frame 10. 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, an embodiment of the utility model proposes a hydraulic telescopic top cover hanger, comprising a main beam 1, a plurality of hydraulic cylinders 2, a plurality of fixed pulleys 5, a movable pulley 6 and a hanging beam 8, wherein the main beam 1 is used to carry the hydraulic cylinders 2 and fixed pulleys 5 which are evenly distributed and combined in a set, a mounting plate 3 is fixedly connected to the middle of the main beam 1, a hanging shaft 4 is fixedly connected between the mounting plates 3, the hanging shaft 4 is used to be connected to a hook of a crane, the hydraulic cylinder 2 is hinged at the middle of the mounting plate 3 and is arranged parallel to the corresponding fixed pulley 5, a steel wire rope 7 is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder 2, the steel wire rope 7 is 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 a connecting hole is opened at the bottom end of the hanging beam 8 and is 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 hydraulic cylinder 2 to pull the wire rope 7 together. Finally, make the 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 1 , Figure 2As 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.

[0019] More specifically, Figure 2 As shown, the number of the fixed pulleys 5 is not less than three, the number of the hydraulic cylinders 2, the movable pulleys 6 and the hanging beams 8 is the same as the number of the fixed pulleys 5, and the evenly distributed hanging beams 8 are used to stably lift the top cover. Preferably, the number of the hydraulic cylinders 2 is four, which saves costs while stabilizing the lifting. Since the hanging beams 8 are spread outward, the evenly arranged hanging beams 8 can balance the horizontal force caused by the inclined pull of the hanging beams 8.

[0020] More specifically, Figure 2 As shown, an arc groove 9 is provided on the suspension shaft 4, and the groove 9 is used to limit the position of the suspension hook. The groove 9 is used to limit the position of the suspension hook of the crane to avoid displacement of the suspension hook during the lifting process and cause safety accidents.

[0021] More specifically, Figure 1 As shown, a plurality of evenly distributed support frames 10 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 10, 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 hydraulic telescopic top cover hanger, characterized in that: It includes a main beam and several hydraulic cylinders, a fixed pulley, a movable pulley and a hanging beam. The main beam is used to carry hydraulic cylinders and fixed pulleys that are evenly distributed and combined in a set. A mounting plate is fixedly connected to the middle of the main beam, and a hanging shaft is fixedly connected between the mounting plates. The hanging shaft is used to connect with the hook of the crane. The hydraulic cylinder is hinged at the middle of the mounting plate and is arranged parallel to the corresponding fixed pulley. A steel wire rope is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder. The steel wire rope is sequentially sleeved on the fixed pulley and the movable pulley. The movable pulley is fixedly installed on the top of the hanging beam. A connecting hole is opened at the bottom end of the hanging beam and is fixedly connected to the top cover by bolts.

2. A hydraulic telescopic 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.

3. A hydraulic telescopic top cover hanger according to claim 1, characterized in that: The number of the fixed pulleys is not less than three, and the number of the hydraulic cylinders, movable pulleys and hanging beams is the same as the number of the fixed pulleys.

4. A hydraulic telescopic top cover hanger as claimed in claim 1, characterized in that: An arc-shaped groove is provided on the hanging shaft, and the groove is used to limit the hanging hook.

5. The hydraulic telescopic 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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