Anti-rollover device of water turbine taper pipe maintenance platform

Abstract

The utility model discloses an anti-rollover device of a water turbine taper pipe maintenance platform. The anti-rollover device is composed of a rotatable telescopic supporting frame with a self-locking function, a bolt, a nut, a gasket, a stretching device for fixing, a rotating shaft, a fixing pin, a cotter pin and an auxiliary beam with a positioning hole. After the maintenance platform is laid in the taper pipe, the supporting frame is adjusted to make contact with the inner surface of the taper pipe, and then the stretching device for fixing is connected to the auxiliary beam through the fixing pin. The maintenance platform is suitable for the water turbine taper pipe, the maintenance platform is fixed through a mechanical structure, and the rollover prevention function can be achieved without adding a lifting piece to the taper pipe; the safety of the maintenance platform is effectively guaranteed, meanwhile, the design difficulty and the manufacturing difficulty of the taper pipe of the water turbine are reduced, the maintenance platform can be transformed when the water turbine is repaired, and the transformation cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbines, in particular to an anti-rollover device for a water turbine cone pipe maintenance platform. Background Art

[0002] When inspecting the runner in the cone tube, components at the measuring point and other equipment in the existing hydropower station, it is necessary to set up an inspection platform. The existing inspection platform of the cone tube of the turbine is generally composed of a main beam, a secondary beam and a platform. In order to deal with the problem of platform rollover, it is generally necessary to drill holes in the cone tube and weld a hanging sling, and install eyebolts, wire ropes and other fixed inspection platforms on the hanging sling. However, this solution requires pre-drilling holes in the cone tube and welding a hanging sling seat, which increases the design and construction volume of the cone tube. At the same time, the long-term operation of the unit will cause problems such as rust on the threads at the hanging sling, resulting in safety hazards such as thread failure, and repeated repairs will also incur additional costs. At the same time, the design of the inspection platform needs to be coordinated with the position and number of the cone tube hanging slings, which is difficult to design and lacks versatility. Utility Model Content

[0003] In view of this, in order to solve the technical problems existing in the prior art, the utility model provides an anti-rollover device, which has a firm structure, good safety, does not require the cone tube to provide other preset structures for cooperation, has strong versatility and is easy to maintain. The technical solution provided by the utility model is as follows: an anti-rollover device for a turbine cone tube maintenance platform is composed of a support frame, a fixed tensioning device, and a sub-beam. The support frame is fixed to the end of the sub-beam by bolts and nuts. The telescopic support frame is fixedly connected to the fixed tensioning device by a rotating shaft. By adjusting the length of the support frame to form an angle with the platform plane, one end of the support frame is in contact with the cone tube. The fixed tensioning device is fixedly connected to the sub-beam with a positioning hole by a fixing pin or a cotter pin.

[0004] Furthermore, the support frame can be adjusted in length and has a self-locking function.

[0005] Furthermore, the secondary beam is provided with a plurality of positioning holes.

[0006] Furthermore, the fixing stretching device can adjust the length and has a self-locking function.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] After the multiple anti-rollover devices on the inspection platform are in firm contact with the surface of the cone tube, the area occupied is small, and the normal use of the platform is not affected. At the same time, the platform has the function of anti-rollover, ensuring safety. The utility model does not require the cone tube to preset a corresponding structure to cooperate with it, simplifies the design of the cone tube, and reduces the manufacturing cost and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1This is a typical layout diagram of the maintenance platform.

[0010] Figure 2 This is a schematic diagram of the structure of the anti-rollover device.

[0011] Explanation of the markings in the figure: 1- telescopic support frame; 2- tensioning device for fixing; 3- rotating shaft; 4- fixing pin; 5- split pin; 6- secondary beam. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0013] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] like Figure 1 As shown, a rollover prevention device for a turbine cone maintenance platform is installed on both sides of the maintenance platform sub-beam.

[0015] like Figure 2 As shown, the anti-rollover device of the turbine cone tube maintenance platform consists of a support frame 1, a fixing tensioning device 2, and a sub-beam 6. The support frame 1 is fixed to the end of the sub-beam 6 by bolts and nuts. The telescopic support frame 1 is fixedly connected to the fixing tensioning device 2 by a rotating shaft 3. By adjusting the length of the support frame 1 to form an angle with the platform plane, one end of the support frame 1 is made to contact the cone tube. The fixing tensioning device 2 is fixedly connected to the sub-beam 6 with a positioning hole by a fixing pin 4 or a cotter pin 5.

[0016] The fixing stretching device 2 can select a suitable positioning hole on the subbeam 6 according to the size of the cone tube and the maintenance platform, fix it through the fixing pin 4 and the opening pin 5, and make the whole have a certain structural strength through tightening assembly, and ensure its safety of use through the self-locking device.

[0017] In order to make the maintenance platform have the function of anti-rollover in multiple directions, anti-rollover devices need to be installed in multiple places. Figure 1 The inspection platform shown is of a typical style. The anti-rollover device is arranged parallel to the vertical main beam direction. The reasonable placement position of the anti-rollover device is diverse.

[0018] like Figure 2As shown, the fixing tensioning device 2 can be any chain, rope or rod that can withstand a large pulling force and has a self-locking function, such as a manual hoist with a self-locking function, a metal threaded sleeve, etc. In this embodiment, a metal bolt sleeve with a simple structure and easy operation is used. After the rotatable telescopic support frame 1 and the fixing tensioning device 2 are fixed by a connecting piece, the sleeve can be screwed with a wrench or manually, and the device can be fixed by a nut after tightening.

[0019] The utility model is suitable for various horizontally placed turbine cone pipe maintenance platforms, can effectively solve the problems existing in traditional design solutions, and has the characteristics of simple structure, convenient installation, high stability, significant effect, convenient maintenance and replacement, etc.

[0020] Finally, the protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the scope and spirit of the present invention. If these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A rollover prevention device for a turbine cone maintenance platform, characterized in that: The invention comprises a support frame (1), a fixed stretching device (2), and a sub-beam (6); the support frame (1) is fixed to the end of the sub-beam (6) by means of bolts and nuts; the telescopic support frame (1) is fixedly connected to the fixed stretching device (2) by means of a rotating shaft (3); the length of the support frame (1) is adjusted to form an angle with the platform plane so that one end of the support frame (1) contacts the conical tube; the fixed stretching device (2) is fixedly connected to the sub-beam (6) with a positioning hole by means of a fixing pin (4) or a split pin (5).

2. The anti-rollover device for a turbine cone maintenance platform according to claim 1 is characterized in that: The support frame (1) can be adjusted in length and has a self-locking function.

3. The anti-rollover device for a turbine cone maintenance platform according to claim 1 is characterized in that: The secondary beam (6) is provided with a plurality of positioning holes.

4. The anti-rollover device for a turbine cone maintenance platform according to claim 1 is characterized by: The fixing stretching device (2) can adjust the length and has a self-locking function.

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