Guide vane connecting rod stopper

Abstract

The utility model provides a guide vane connecting rod stopper, which relates to the technical field of water turbines, is used for fixedly connecting a guide vane connecting rod and a fork head, and comprises a fixed connecting plate, one end of the fixed connecting plate is connected with the fork head, and the other end of the fixed connecting plate extends towards the guide vane connecting rod; the stop dog further comprises a fixing piece which is arranged between the fixed connecting plate and the guide vane connecting rod and fixedly connected with the fixed connecting plate. The fixing groove bodies are pressed on the two sides of the fork head and further fixed through the pressing bolts, meanwhile, the hoop is arranged on the outer arm of the guide vane connecting rod in a sleeving mode, the two ends of the hoop stretch into the strip-shaped holes in the fixing plate and are fixedly connected through the bolts, and the stop bolts are arranged on the hoop to further reinforce connection between the hoop and the guide vane connecting rod. When threads of the guide vane connecting rod loosen and rotate, the stop bolts are pressed on the grooves in the two sides of the guide vane connecting rod, so that the guide vane connecting rod can be effectively prevented from further rotating and retreating the threads, and the effect of reinforcing connection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbines, in particular to a guide vane connecting rod stopper. Background Art

[0002] The water guide mechanism's operating links connect the control ring to the outer shaft arm of the movable guide vane. When the guide vane servo pushes the control ring, it transmits the control ring's torque to the movable guide vane, opening and closing the guide vane. The water guide mechanism has 16 guide vane operating links (also known as guide vane links), including eight spring-loaded safety links and eight straight links, spaced apart.

[0003] During use, an abnormal situation suddenly occurred. After inspection, it was found that the guide vane straight connecting rod and the guide vane outer shaft head arm fell off. Further inspection found that the guide vane straight connecting rod was not broken and the connecting thread was normal. The straight connecting rod was de-threaded during operation and fell off from the outer shaft head arm, causing the guide vane to lose its restraint and control force and be in a free motion state in the flow channel, causing abnormal changes in the water flow state in the flow channel and increased vibration of various parts of the unit. When the guide vane is out of control, it hits the connected guide vane in the flow channel, causing the connected guide vane to be displaced. If not handled in time, serious accidents will occur. Utility Model Content

[0004] The purpose of the utility model is to provide a guide vane connecting rod stopper, which is used to achieve a reinforced connection, prevent the guide vane connecting rod from being dethreaded from the fork head, and reduce the technical effect of equipment abnormality.

[0005] The utility model is implemented by the following technical solution: comprising a guide vane connecting rod and a fork, a stopper for fastening the guide vane connecting rod and the fork, the stopper comprising a fixed connecting plate, one end of the fixed connecting plate being connected to the fork, and the other end of the fixed connecting plate extending toward the guide vane connecting rod;

[0006] The stopper also includes a fixing member, which is arranged between the fixing connecting plate and the guide vane connecting rod and is fixedly connected to the fixing connecting plate.

[0007] In order to better realize the present invention, further,

[0008] The fixed connecting plate includes a fixed slot body and a fixed plate connected to the end of the fixed slot body. The fixed slot body can be buckled onto the fork head, and the fixed plate extends toward the guide vane connecting rod.

[0009] In order to better realize the present invention, further,

[0010] The fixing trough body is further provided with a clamping bolt, and the end of the clamping bolt can act on the fork head.

[0011] In order to better realize the present invention, further,

[0012] The fixing plate is further provided with a strip-shaped hole, and the end of the fixing piece passes through the strip-shaped hole.

[0013] In order to better realize the present invention, further,

[0014] The fixing member is a clamp, and the guide vane connecting rod is arranged in the inner ring of the clamp.

[0015] In order to better realize the present invention, further,

[0016] A stop bolt is also provided on the clamp, and the end of the stop bolt acts on the guide vane connecting rod.

[0017] In order to better realize the present invention, further,

[0018] There are two fixed connections, which are respectively located on both sides of the fixing member.

[0019] The beneficial effects of the utility model are:

[0020] The utility model presses the fixing groove body on both sides of the fork head and further fixes it with a clamping bolt, and at the same time, the clamp is sleeved on the outer arm of the guide vane connecting rod, and the two ends of the clamp extend into the strip holes in the fixing plate and are fixedly connected by bolts. The connection between the clamp and the guide vane connecting rod is further strengthened by a stop bolt arranged on the clamp. When the thread of the guide vane connecting rod is loose and there are signs of rotation, the stop bolt and the clamping bolt work together to effectively prevent the guide vane connecting rod from further rotating and withdrawing the thread, thereby achieving the effect of strengthening the connection.

[0021] The guide vane connecting rod stopper provided by the utility model has a low production cost and does not require hot work, drilling, etc. on the guide vane connecting rod and the fork head, thereby avoiding damage to the mechanical properties of the guide vane connecting rod and the fork head. At the same time, the stopper has a simple structure and is easy to install. The generator set does not need to be turned in for maintenance and can be installed in a shut-down state. While ensuring the connection strength, the probability of equipment failure can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the present invention. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of the water guide mechanism provided by the utility model;

[0024] Figure 2 The structure diagram of the stopper provided by the utility model Figure 2 ;

[0025] Figure 3 A schematic diagram of the structure of the fixed connecting plate provided by the utility model;

[0026] Figure 4 A schematic diagram of the structure of the fixing member provided by the utility model;

[0027] icon:

[0028] 001-guide vane connecting rod, 002-fork head, 003-guide vane outer shaft head arm, 100-fixed connecting plate, 101-fixed trough body, 102-fixed plate, 103-tightening bolt, 104-strip hole, 200-fixing part, 201-stop bolt. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described below in conjunction with the accompanying drawings of the present invention.

[0030] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this utility model, the terms "first", "second", etc. are used only to distinguish the description and should not be understood as indicating or implying relative importance.

[0031] Please see Figures 1 to 4 The present invention provides a guide vane connecting rod stopper. In the prior art, there is a situation in which the guide vane connecting rod 001 and the guide vane outer shaft head crank arm 003 fall off during use, causing a series of equipment abnormalities. In order to solve the above technical problems, the present invention arranges a stopper between the guide vane connecting rod 001 and the guide vane outer shaft head crank arm 003 to strengthen the connection strength between the guide vane connecting rod 001 and the guide vane outer shaft head crank arm 003, thereby reducing the probability of the guide vane connecting rod 001 and the guide vane outer shaft head crank arm 003 falling off, thereby reducing the purpose of equipment operation abnormalities.

[0032] As shown in the figure, the water guide mechanism operating device includes a guide vane outer shaft head arm 003, a fork head 002, a guide vane connecting rod 001, and a fork head 002. During use, the two ends of the guide vane connecting rod 001 are linked with the fork head 002. The guide vane connecting rod 001 and the fork head 002 are connected by a threaded connection, which makes it easy for them to fall off.

[0033] The stopper includes a fixed connecting plate 100 and a fixing member 200. One end of the fixed connecting plate 100 can be buckled into the fork head 002. As shown in the figure, the fork head 002 is in the shape of an inverted groove. The fixing member 200 can be connected to the guide vane link 001 and the fixed connecting plate 100, so that it can further lock the fork head 002 and the guide vane link 001 to achieve the effect of strengthening the connection.

[0034] The fixed connecting plate 100 includes a fixed slot body 101 and a fixed plate 102. The fixed slot body 101 is concave and is buckled on both sides of the fork head 002 through the concave feature. In order to ensure a firm connection, a clamping bolt 103 is also provided on the fixed slot body 101. The clamping bolt 103 passes through the fixed slot body 101 and the end acts on the side wall of the fork head 002, thereby achieving a certain clamping purpose and reducing the looseness between the guide vane connecting rod 001 and the fork head 002.

[0035] One end of the fixing plate 102 is connected to the fixing slot 101. The fixing plate 102 extends in the direction of the guide vane link 001, and a strip hole 104 is set on the fixing plate 102. The strip hole 104 is used for the end of the fixing piece 200 to pass through, so that the fixing piece 200 and the fixing plate 102 can be fixed to each other.

[0036] The fixing part 200 is preferably a clamp. As shown in the figure, the clamp is composed of two semicircular hoops, which clamp the guide vane connecting rod 001 in the circle. The two ends of the clamp are inserted into the strip holes 104 on the fixing plate 102, and then fixed by bolts, etc., so as to achieve the purpose of stable connection.

[0037] In actual use, it is preferred to have two fixed connecting plates 100, located at both ends of the fork head 002, so that it can have a better connection and stability. In addition, it can also better match with the fixing part 200, strengthen the connection between each other, and thus achieve a firm effect.

[0038] Likewise, in order to prevent the guide vane link 001 from withdrawing from the end of the fork head 002 , a clamping bolt 103 is also provided on the fixing member 200 .

[0039] The workflow of this utility model is as follows:

[0040] The fixing slot body 101 is pressed against both sides of the fork head 002 and further fixed with the clamping bolts 103. At the same time, the clamp is placed on the outer arm of the guide vane link 001. The two ends of the clamp are inserted into the strip holes 104 in the fixing plate 102 and fixedly connected by bolts. The stop bolts 201 are also set on the clamp to further strengthen the connection between the clamp and the guide vane link 001. When the threads of the guide vane link 001 are loose and there are signs of rotation, the stop bolts 201 are pressed against the grooves on both sides of the guide vane link 001, which can effectively prevent the guide vane link 001 from further rotating and withdrawing the threads, thereby achieving the effect of strengthening the connection.

[0041] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A guide vane connecting rod stopper, comprising a guide vane connecting rod (001) and a fork (002), characterized in that: The stopper is used for fastening the guide vane connecting rod (001) and the fork (002), and the stopper comprises a fixed connecting plate (100), one end of the fixed connecting plate (100) is connected to the fork (002), and the other end of the fixed connecting plate (100) extends toward the guide vane connecting rod (001); The stopper further comprises a fixing member (200), wherein the fixing member (200) is arranged between the fixing connecting plate (100) and the guide vane connecting rod (001), and is fixedly connected to the fixing connecting plate (100).

2. The guide vane link stopper according to claim 1, characterized in that: The fixed connecting plate (100) comprises a fixed slot body (101) and a fixed plate (102) connected to the end of the fixed slot body (101); the fixed slot body (101) can be snap-fitted onto the fork head (002); and the fixed plate (102) extends in the direction of the guide vane connecting rod (001).

3. The guide vane link stopper according to claim 2, characterized in that: A clamping bolt (103) is also provided on the fixing trough body (101), and the end of the clamping bolt (103) can act on the fork head (002).

4. The guide vane link stopper according to claim 3, characterized in that: The fixing plate (102) is further provided with a strip-shaped hole (104), and the end of the fixing member (200) is inserted into the strip-shaped hole (104).

5. The guide vane link stopper according to claim 4, characterized in that: The fixing member (200) is a clamp, and the guide vane connecting rod (001) is arranged in the inner ring of the clamp.

6. The guide vane link stopper according to any one of claims 1 to 5, characterized in that: A stopping bolt (201) is also provided on the clamp, and the end of the stopping bolt (201) acts on the guide vane connecting rod (001).

7. The guide vane link stopper according to claim 6, characterized in that: There are two fixed connections, which are respectively located on both sides of the fixing member (200).

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