Connecting rod fixing device for actuating mechanism of movable blade adjustable axial flow fan

Abstract

The utility model discloses a movable blade adjustable axial flow fan actuating mechanism connecting rod fixing device, which is characterized in that one end of a connecting plate of a toothed clamp far away from a tooth clamp is connected through a clamp hinge, the tooth clamp is of a semicircular structure, teeth are arranged on the inner wall of the tooth clamp, one end of a support far away from the tooth clamp is provided with a bottom plate, and the bottom plate is connected with the support through a bottom plate hinge. The free end of the bottom plate faces the end away from the support, a long round hole is formed in the bottom plate, and a bolt is arranged in the long round hole. Compared with the prior art, the operation risk of personnel is reduced, the fixing reliability of the connecting rod of the movable blade executing mechanism is guaranteed, the device is easy to manufacture and convenient and fast to operate, and the operation efficiency of the personnel is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of thermal power generator units, and particularly relates to a connecting rod fixing device for a moving blade adjustable axial flow fan actuator. Background Art

[0002] Moving blade adjustable axial flow fans are widely used in thermal power generator units, mainly responsible for functions such as coal pulverization, air supply, smoke exhaust, and establishment and maintenance of furnace negative pressure in coal-fired boilers. The moving blade actuator of a moving blade adjustable axial flow fan is mainly responsible for accurately adjusting the output during the operation of the fan, which is reflected in the control of boiler operation oxygen content, air volume, and furnace negative pressure during boiler operation.

[0003] With the long-term operation of boilers, electrical and thermal components in the fan electric actuators deteriorate to varying degrees, resulting in problems such as fluctuations and malfunctions in the moving blade opening, threatening the safe and stable operation of the units. Once such problems occur, it is necessary to remove the moving blade actuator online or stop the operation of the fan for maintenance. To avoid the reduction in unit output or shutdown accidents caused by the fan being taken out of operation, measures such as online replacement of the actuator are generally adopted. When the actuator is removed online, it is necessary to fix the transmission connecting rod of the actuator. The traditional method uses angle steel welding to fix the transmission connecting rod to the actuator base. This method is time-consuming and laborious, with low efficiency and poor reliability, and has many drawbacks. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a connecting rod fixing device for a moving blade adjustable axial flow fan actuator to solve problems such as low efficiency and poor reliability in the connecting rod fixing operation during the online replacement of the moving blade actuator of an axial flow fan in the power system.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A connecting rod fixing device for a moving blade adjustable axial flow fan actuator includes symmetrically arranged toothed clamps. The toothed clamps sequentially include a connecting plate, a tooth clamp, and a bracket from top to bottom. A clamp hinge connection is provided between the ends of the two connecting plates away from the tooth clamp. The tooth clamp is a semi-circular structure, with teeth provided on the inner wall of the tooth clamp. A bottom plate is provided at the end of the bracket away from the tooth clamp, and a bottom plate hinge connection is provided between the bottom plate and the bracket. The free end of the bottom plate faces away from the bracket, and a long circular hole is provided on the bottom plate, and a bolt is provided in the long circular hole.

[0007] To further implement the utility model, the two tooth clamps cooperate to form a circle.

[0008] The beneficial effects of the utility model compared with the prior art are as follows:

[0009] The bottom plate of the utility model is connected to the base of the fan moving blade actuator through bolts. By sliding the bolts in the oblong holes, the opening size and clamping force of the toothed fixture are adjusted to fix the connecting rod of the moving blade actuator.

[0010] Between the two connecting plates of the utility model and between the bracket and the bottom plate, hinge connections are adopted. They are connected to the actuator base through bolts, and at the same time, the opening size and clamping force of the fixture are adjusted to achieve the fixing effect of the moving blade actuator.

[0011] The toothed fixture of the utility model can reliably fix the connecting rod of the fan moving blade actuator, avoiding the fluctuation of the moving blade opening and affecting the output of the fan.

[0012] Between the two connecting plates of the utility model and between the bracket and the bottom plate, they are respectively connected by hinges, which can be applicable to the fixing of connecting rods of moving blade actuators of different sizes, and have a wide range of applications.

[0013] Compared with the prior art, the utility model reduces the operation risk of personnel, ensures the reliability of the fixing of the connecting rod of the moving blade actuator, the device is simple to manufacture, the operation is convenient, and the operation efficiency of personnel is effectively improved. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a top view of the utility model;

[0016] The meanings of the reference numerals are as follows: 1, toothed fixture; 2, connecting plate; 3, tooth clamp; 4, bracket; 5, fixture hinge; 6, bottom plate; 7, bottom plate hinge; 8, oblong hole; 9, bolt; 10, tooth. Detailed Embodiment

[0017] The following further describes the utility model with reference to the drawings and specific embodiments.

[0018] As Figure 1-2 shown, a fixing device for the connecting rod of a moving blade adjustable axial flow fan actuator includes symmetrically arranged toothed fixtures 1. The toothed fixture 1 sequentially includes a connecting plate 2, a tooth clamp 3 and a bracket 4 from top to bottom. Between the ends of the two connecting plates 2 away from the tooth clamp 3, a fixture hinge 5 is provided for connection. The tooth clamp 3 is of a semi-circular structure, and the two tooth clamps 3 cooperate to form a circle. Teeth 10 are provided on the inner wall of the tooth clamp 3. A bottom plate 6 is provided at the end of the bracket 4 away from the tooth clamp 3. A bottom plate hinge 7 is provided for connection between the bottom plate 6 and the bracket 4. The free end of the bottom plate 6 faces away from the end of the bracket 4. An oblong hole 8 is provided on the bottom plate 6, and a bolt 9 is provided in the oblong hole 8.

[0019] When a failure occurs in the moving vane actuator of an axial-flow fan, before removing the actuator, use the toothed fixture 1 of the present utility model to clamp the connecting rod of the moving vane actuator, connect it to the base of the actuator through the bolt 9, and at the same time adjust the opening size and tightening force of the toothed fixture 1 to achieve the fixing effect of the moving vane actuator. After that, remove the moving vane actuator to ensure the reliable fixation of the moving vane of the fan.

Claims

1. A connecting rod fixing device for an axial flow fan actuator with adjustable moving blades, characterized in that: The invention comprises a symmetrically arranged toothed clamp (1), which comprises a connecting plate (2), a tooth clamp (3) and a bracket (4) in order from top to bottom. A clamp hinge (5) is arranged between the ends of the two connecting plates (2) away from the tooth clamp (3). The tooth clamp (3) is a semicircular structure. Teeth (10) are arranged on the inner wall of the tooth clamp (3). A bottom plate (6) is arranged at the end of the bracket (4) away from the tooth clamp (3). A bottom plate hinge (7) is arranged between the bottom plate (6) and the bracket (4). The free end of the bottom plate (6) is arranged toward the end away from the bracket (4). An oblong hole (8) is arranged on the bottom plate (6), and a bolt (9) is arranged in the oblong hole (8).

2. The connecting rod fixing device of the actuator of the axial flow fan with adjustable moving blades according to claim 1, characterized in that: The two tooth clamps (3) cooperate to form a circle.

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