Combined guide vane sleeve pulling-out device

Abstract

The utility model discloses a combined guide vane sleeve pulling-out device which comprises a round base plate and connecting holes evenly distributed in the base plate at intervals, and is characterized in that a base defined by a plurality of inner walls is fixed on the base plate, through holes are formed in the inner walls, a conical connecting part is fixed on the base, a top cover covers the top of the connecting part and is fixed through bolts, and the top cover covers the bottom of the connecting part. A hanging ring is arranged on the top cover; the connecting part is formed by connecting a plurality of triangular reinforcing walls, each reinforcing wall comprises a triangular side plate, side beams are arranged on the two sides of each side plate, a plurality of side holes are formed in the side beams at intervals, the adjacent reinforcing walls are fixedly connected through the side beams, the side holes and bolts, a top beam is arranged at the top of each side plate, and a bottom beam is arranged at the bottom of each side plate. The top beam, the bottom beam and the side beam are connected with one another and surround the side plate, and the bottom of the side plate is fixed to the through hole of the inner wall through bolts. The number of the reinforcing walls is four, and the four reinforcing walls are combined with one another to form a regular four-face conical connecting part.

Description

Technical Field

[0001] The present technical solution relates to a professional tool for water conservancy projects, specifically a combined guide vane sleeve extraction device. Background Art

[0002] As is well known, the guide vane sleeve in the guide water mechanism of a bulb tubular hydro-generator unit needs to be maintained regularly. Each time maintenance is required, the guide vane sleeve needs to be pulled out. Since the guide vane sleeve bears the force of the guide vanes and internal parts, and is installed very tightly due to waterproof requirements, it is very difficult to extract the guide vane sleeve. To solve this situation, Chinese Patent 202320641226.4 discloses a special device for extracting the guide vane sleeve. It is connected to the guide vane sleeve by means of screw fixation, and then it is pulled out together with the guide vane sleeve by using a hoisting device or a jack, and the extraction efficiency is improved. However, there are still the following deficiencies: 1. Since the guide vane sleeves are circumferentially distributed, there are various situations where the openings face directly left, directly right, directly down, lower left, and lower right. For these orientations, the special device needs to be installed on the guide vane sleeve one by one and pulled out. The special device is too heavy, and it is difficult for ordinary workers to install. Especially when the opening faces downwards, the worker needs to turn the special device over to connect it to the guide vane sleeve. Due to environmental restrictions and unit obstacles, the hoisting device cannot cooperate either, making the extraction work very difficult; 2. Similarly, affected by the different orientations of the guide vane sleeves, it is very difficult for the directions of traction of the jack and the hoisting machine to be exactly the same as the orientation of the guide vane sleeve, with a slight angular deviation. The existing technology still has an unstable structure and will tilt and deform after being used several times. Summary of the Utility Model

[0003] The purpose of the present utility model is to overcome the deficiencies of the prior art and provide a combined guide vane sleeve extraction device that can be combined and disassembled, is convenient to install on guide vane sleeves with different orientations, has a stable structure, can withstand greater torque, and thus ensures the smooth extraction of the guide vane sleeve. The specific scheme is as follows.

[0004] The combined guide vane sleeve extraction device includes a circular chassis. Connecting holes are evenly spaced on the chassis. It is characterized in that a base surrounded by multiple inner walls is fixed on the chassis. Through holes are opened on the inner walls. A conical connecting part is fixed on the base. The top of the connecting part is covered with a top cover and fixed by bolts. A hanging ring is provided on the top cover.

[0005] The connecting part is connected by multiple triangular reinforcing walls. The reinforcing wall includes a triangular side plate. Side beams are provided on both sides of the side plate. Multiple side holes are spaced on the side beams. Adjacent reinforcing walls are consolidated by side beams, side holes and bolts. A top beam is provided at the top of the side plate. A bottom beam is provided at the bottom of the side plate. The top beam, bottom beam and side beam are connected to surround the side plate. The bottom of the side plate is fixed on the through hole of the inner wall by bolts.

[0006] The four reinforcing walls are combined with each other to form a connecting part in the shape of a regular tetrahedral cone.

[0007] The number of the side holes is not less than three.

[0008] Through holes are formed in the top beam, and the top cover is fixed on the through holes by bolts.

[0009] The side wall of the top cover extends downward to form a concave clamping groove, and the top cover covers the tops of the respective reinforcing walls through the clamping groove.

[0010] The usage method of this technical solution is as follows:

[0011] First, use bolts and the connection holes on the chassis to fix the chassis on the guide vane sleeve; then use bolts to fix the respective reinforcing walls on the corresponding inner walls; then reinforce the adjacent reinforcing walls through side beams and side holes with bolts, leaving spare holes; then cover the top cover on the top of the reinforcing walls and fix it with bolts; finally, with the traction of a jack, a hoisting structure or a lever mechanism, pull out this device together with the guide vane sleeve.

[0012] This technical solution has the following progressive effects compared with the prior art:

[0013] Since the orientations of the guide vane sleeves are up, down, left, right, upper left, upper right, lower left, and lower right, when the opening of the guide vane sleeve faces upward, it is possible to make good use of hoisting tools to install the existing special pulling-out device. However, when the opening of the guide vane sleeve faces downward (including lower left and lower right), it is very difficult for workers to turn over the heavy special pulling-out device and align it with the opening of the guide vane sleeve. The installation is difficult and it is also easy to cause safety accidents of hitting workers. This device solves this problem well. By splitting this device into a chassis, a top cover and multiple reinforcing walls, the weight is distributed. In sequence, workers can assemble the chassis, multiple-sided reinforcing walls and the top cover onto the guide vane sleeve one by one. The installation is easier, can be completed without auxiliary tools, is not restricted by the installation environment, and is not prone to safety accidents. This is the main technical problem solved by this technical solution;

[0014] This device has strong stability. The triangular reinforcing walls support each other and are also tractioned with each other through the top beam, bottom beam and side beam, effectively dispersing the forces received, making the whole device have strong integrity and being able to withstand greater traction force and greater deflection force without deformation;

[0015] The side holes on the side beams of the reinforcing walls can, on the one hand, play a role in fastening adjacent reinforcing walls. On the other hand, the reserved spare holes can be tied with ropes and connected to a relatively strong frame or beam in the surrounding environment, so that the guide vane sleeve will not cause equipment damage or personal injury due to excessive swaying after being pulled out. Description of the Drawings

[0016] Figure 1It is a schematic three-dimensional structure diagram of Embodiment 1 of the present utility model;

[0017] Figure 2 It is a schematic three-dimensional structure diagram of the chassis of Embodiment 1 of the present utility model;

[0018] Figure 3 It is a schematic three-dimensional structure diagram of the reinforcement wall of Embodiment 1 of the present utility model;

[0019] Figure 4 It is a schematic disassembly structure diagram of Embodiment 1 of the present utility model;

[0020] Figure 5 It is a schematic three-dimensional structure diagram of the top cover of Embodiment 1 of the present utility model.

[0021] Explanation of reference numerals: 1 top cover, 1-1 card slot, 2 reinforcement wall, 2-1 side beam, 2-2 bottom beam, 2-3 top beam, 2-4 side hole, 2-5 side plate, 3 hanging ring, 4 chassis, 4-1 connection hole, 4-2 inner wall. Detailed implementation manners

[0022] In Embodiment 1, referring to the attached Figures 1-5 , the combined guide vane sleeve pulling-out device includes a circular chassis 4, and connection holes 4-1 are evenly distributed at intervals on the chassis. The feature is that a base surrounded by multiple inner walls 4-2 is fixed on the chassis, through holes are opened on the inner walls, a conical connecting part is fixed on the base, the top of the connecting part is covered with a top cover 1 and fixed by bolts, and a hanging ring 3 is provided on the top cover.

[0023] The said connecting part is connected by multiple triangular reinforcement walls 2. The said reinforcement wall includes triangular side plates 2-5, side beams 2-1 are provided on both sides of the side plates, and multiple side holes 2-4 are provided at intervals on the side beams. Adjacent reinforcement walls are consolidated by side beams, side holes and bolts. A top beam 2-3 is provided at the top of the side plate, a bottom beam 2-2 is provided at the bottom of the side plate, and the top beam, bottom beam and side beam are connected to surround the side plate. The bottom of the side plate is fixed on the through hole of the inner wall by bolts.

[0024] There are four said reinforcement walls, which are combined with each other to form a regular tetrahedral connecting part.

[0025] The number of said side holes is not less than three.

[0026] Through holes are opened on the said top beam, and the top cover is fixed on the through holes by bolts.

[0027] The side wall of the said top cover extends downward to form an inward concave card slot 1-1, and the top cover covers the top of each reinforcement wall through the card slot.

[0028] The usage method of this technical solution is:

[0029] First, use bolts and the connection holes on the chassis to fix the chassis on the guide vane sleeve; then use bolts to fix each reinforcement wall on the corresponding inner wall respectively; next, reinforce the adjacent reinforcement walls with bolts through side beams and side holes, leaving spare holes; then cover the top cover on the top of the reinforcement wall and fix it with bolts; finally, with the traction of a jack, a hoisting structure or a lever mechanism, pull out this device together with the guide vane sleeve.

Claims

1. A combined guide vane sleeve removal device comprises a circular chassis with connection holes evenly spaced at intervals on the chassis, characterized in that: A base surrounded by multiple inner walls is fixed on the chassis, and through holes are opened on the inner walls. The conical connecting part is fixed on the base, and the top of the connecting part is covered with a top cover and fixed by bolts, and a hanging ring is provided on the top cover; the connecting part is connected by multiple triangular reinforcement walls, and the reinforcement wall includes a triangular side panel, and side beams are provided on both sides of the side panel. A plurality of side holes are provided on the side beams at intervals, and adjacent reinforcement walls are fixed with bolts through the side beams and the side holes. A top beam is provided on the top of the side panel, and a bottom beam is provided at the bottom of the side panel. The top beam, the bottom beam, and the side beams are interconnected and surround the side panel, and the bottom of the side panel is fixed to the through hole of the inner wall by bolts.

2. The combined guide vane sleeve removal device according to claim 1 is characterized in that: There are four reinforcement walls, which are combined with each other to form a regular tetrahedral cone-shaped connection part.

3. The combined guide vane sleeve removal device according to claim 1 is characterized in that: The number of the side holes is no less than three.

4. The combined guide vane sleeve removal device according to claim 1 is characterized in that: A through hole is formed on the top beam, and the top cover is fixed on the through hole by bolts.

5. The combined guide vane sleeve removal device according to claim 1 is characterized in that: The side walls of the top cover extend downward to form an inwardly concave slot, and the top cover is covered on the top of each reinforcement wall through the slot.

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