Metal safety net fixing guide vane protection device with wiring guiding function

Abstract

A metal safety net fixed guide vane protection device with a wiring guide function comprises guide mechanisms, and the guide mechanisms are circumferentially fixed to fixed guide vanes in multiple groups. Each group of guide mechanisms are arranged up and down in pairs; the upper and lower guide ropes penetrate through the corresponding guide mechanisms and are tightened by tightening devices; and the safety net is buckled and tightened with the guide rope up and down through a safety buckle. The metal safety net fixing guide vane protection device with the wiring guiding function is high in strength and small in resistance.

Description

Technical Field

[0001] The utility model relates to a protective device, in particular to a metal safety net fixed guide vane protective device with wire guide. Background Art

[0002] During the installation and maintenance of large-scale hydro-turbine generator sets, a series of work needs to be carried out at the seat ring fixed guide vane, such as end face seal inspection and treatment, movable guide vane clearance measurement, fixed guide vane anti-corrosion painting, etc. The seat ring to the ground height of the volute is 5 meters from the nose of the volute to the highest point, which is a high-altitude edge operation. Due to structural reasons, it is impossible to wear a safety belt, and the seat ring fixed guide vane is slippery, which brings great safety risks to on-site operations. The traditional protective measures are to wrap the safety main rope around the fixed guide vane, and then tie the nylon safety net to the safety main rope as a safety protection measure, but there are the following defects:

[0003] 1) Insufficient strength. Both the main safety rope and the safety net are made of nylon, and the installation of the main safety rope is completely tightened manually. The safety net and the main rope are tied with nylon rope or plastic tie, which cannot form a tight state, resulting in low overall strength. During use, the upper main safety rope often falls due to insufficient tightening, resulting in insufficient protection height and safety risks.

[0004] 2) Large resistance. The outer edge of the fixed guide vane forms a shear angle with the safety main rope, which forms a large resistance during the tightening process of the safety main rope and cuts the main rope, which is prone to safety risks such as main rope cutting. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a metal safety net fixed guide vane protection device with wire guide, which has high strength and small resistance.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A metal safety net fixed guide vane protection device with wire guide, comprising a guide mechanism, wherein the guide mechanism is divided into multiple groups and circumferentially fixed on the fixed guide vane; each group of guide mechanisms is in pairs and arranged up and down; the upper and lower guide ropes pass through the corresponding guide mechanisms and are tightened by a tightening device; the safety net is buckled and tightened with the guide ropes by safety buckles at the top and bottom.

[0008] The guide mechanism comprises a magnetic lifter, one side of the magnetic lifter is rotatably mounted with a bracket through a base, a pair of guide wheels are mounted on the bracket, and a guide rope passes through a gap between the pair of guide wheels.

[0009] The guide rope is a steel wire rope, and the safety net is a stainless steel rope net.

[0010] The utility model provides a metal safety net fixed guide vane protection device with wire guide, which has the following technical effects:

[0011] 1) The diameter of the water inlet of the fixed guide vane is about 15 meters, and the required guide rope is about 47 meters. At such a length, the friction of the fixed guide vane on the guide rope is quite large. By setting up a guide mechanism, the resistance during the tightening of the guide rope can be reduced, and the height of the guide rope can be limited to prevent it from falling, thereby forming an effective safety protection.

[0012] 2) Guide ropes, safety nets, etc. are made of steel wire ropes, stainless steel rope nets, etc., which not only have the ability to prevent rust in humid environments, but also greatly enhance the protection strength.

[0013] 3) By adopting a tightening device instead of manual tightening, the overall strength of the device is further improved.

[0014] 4) Safety buckles replace binding, making the installation of safety nets safer, more standardized and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a schematic diagram of the installation structure of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the utility model.

[0018] Figure 3 It is a partial structural schematic diagram of the utility model.

[0019] Figure 4 It is a working schematic diagram of the guide mechanism in the utility model.

[0020] Figure 5 It is a structural schematic diagram of the guide mechanism in the utility model.

[0021] In the figure: guide mechanism 1, guide rope 2, safety net 3, safety buckle 4, tightening device 5, magnetic lifter 1.1, base 1.2, bracket 1.3, guide wheel 1.4. DETAILED DESCRIPTION

[0022] like Figure 1-2 As shown, a metal safety net fixed guide vane protection device with wire guide includes multiple guide mechanisms 1, guide ropes 2, safety nets 3, safety buckles 4 and tightening devices 5.

[0023] The guide mechanism 1 includes a magnetic jack 1.1, a base 1.2 is fixed on the upper end of the magnetic jack 1.1, a bracket 1.3 is rotatably mounted on the base 1.2, and two sets of guide wheels 1.4 are fixed on the bracket 1.3. Since the guide wheels 1.4 and the bracket 1.3 can rotate 360° around the base 1.2, the height deviation of the upper and lower guide ropes 2 can be compensated, and the guide wheel 1.4 can roll during the tightening of the guide rope 2. Therefore, the friction force during the tightening of the guide rope 2 is greatly reduced by the 360° rotation function of the guide mechanism 1 and the rolling function of the guide wheel 1.4, ensuring the full tightening of the guide rope 2. At the same time, the magnetic jack 1.1 can be well adsorbed on the surface of the fixed guide vane made of carbon steel to maintain the guide rope 2 at the required installation height.

[0024] When in use, a pair of guide mechanisms 1 are arranged on the 24 fixed guide vanes at intervals of about 1.5 m, and the pair of guide mechanisms 1 are arranged up and down.

[0025] There are two guide ropes 2, which are made of steel wire ropes. Each guide rope 2 is used as a safety main rope and passes between two guide wheels of multiple groups of guide mechanisms 1 at the same height.

[0026] The steel wire rope used as the main safety rope greatly increases the strength of the fixed guide vane safety protection device and can reduce the cutting of the main rope by the corners of the fixed guide vanes to a certain extent.

[0027] The safety net 3 is a stainless steel rope net, and the safety net 3 is fastened to the guide rope 2 through safety buckles 4 at the top and bottom.

[0028] In addition, two rope ends are provided at both ends of each guide rope 2, and the tightening device 5 is connected to the rope ends at both ends of the guide rope 2. The tightening device 5 tightens the wire rope while driving the tightening of the wire rope. The tightening device can be a chain hoist, an electric hoist, a lever hoist, a tightening belt, a tensioner, a basket bolt, etc.

[0029] Working principle and process:

[0030] After the upper and lower guide ropes 2 are tightened by the tightening device 5, the safety net 3 is installed on the upper and lower guide ropes 2 with the safety buckle 4 to form a circle of tight protection around the fixed guide vane.

[0031] In this device, a stainless steel rope net is selected as the safety net 3, the stainless steel wire diameter is 2mm, the mesh size is 10cm×10cm, and the length can be selected within the range of 10~20 meters. The height after stretching can reach 1.5m, which avoids rust caused by the humid environment in the volute on the one hand, and greatly enhances the strength of the safety net on the other hand. The safety buckle 4 is selected to replace the traditional nylon rope or plastic tie binding method, which also enhances the safety of the protective device.

Claims

1. A metal safety net fixed guide vane protection device with wire guide, characterized in that: The invention comprises a guide mechanism (1), wherein the guide mechanism (1) is divided into a plurality of groups and fixed circumferentially on a fixed guide vane; each group of guide mechanisms (1) is arranged in pairs up and down; upper and lower guide ropes (2) pass through corresponding guide mechanisms (1) and are tightened by a tightening device (5); and a safety net (3) is buckled and tightened with the guide ropes (2) up and down by a safety buckle (4).

2. A metal safety net fixed guide vane protection device with wire guide according to claim 1, characterized in that: The guide mechanism (1) comprises a magnetic lifter (1.1), a bracket (1.3) being rotatably mounted on one side of the magnetic lifter (1.1) via a base (1.2), a pair of guide wheels (1.4) being mounted on the bracket (1.3), and a guide rope (2) passing through a gap between the pair of guide wheels (1.4).

3. The metal safety net fixed guide vane protection device with wire guide according to claim 1, characterized in that: The guide rope (2) is a steel wire rope, and the safety net (3) is a stainless steel rope net.

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