Sealing structure for threading pipe of hollow shaft of wind power gear box

Abstract

The utility model relates to the technical field of gearbox sealing, in particular to a wind power gearbox hollow shaft threading pipe sealing structure which comprises a mounting seat and a sealing device, a threading ring is arranged on one side of the mounting seat, the sealing device is arranged in the inner wall of the mounting seat, the sealing device comprises a round sleeve, and the round sleeve is fixedly connected with the mounting seat. A baffle is fixedly connected to the inner wall of the round sleeve, a first hole is formed in the surface of the baffle, the wire penetrating ring is inserted into the first hole in the surface of the baffle, a rubber pad is fixedly connected to the surface of the wire penetrating ring, the rubber pad abuts against the baffle, and a fixing rod is fixedly connected to the surface of the wire penetrating ring. External impurities, dust and water are effectively prevented from entering equipment through a connecting gap between the threading pipe and the mounting base, normal operation of a circuit is guaranteed, faults are reduced, internal lubricating oil leakage can be reduced through good sealing, cost is saved, pollution to the environment can be reduced, the compression resistance and impact resistance of the threading pipe can be enhanced, and the service life of the threading pipe is prolonged. And the device adapts to complex and changeable working environments.

Description

Technical Field

[0001] The utility model relates to the technical field of gearbox sealing, in particular to a sealing structure for a hollow shaft threading pipe of a wind power gearbox. Background Art

[0002] The wind power gearbox is one of the key components in a wind power generation unit. Its main function is to convert the low-speed, high-torque mechanical energy of the wind turbine into the high-speed, low-torque mechanical energy suitable for the operation of the generator. The threading pipe is the passage through which the pitch control mechanism control and power cables of the wind turbine in the wind power increasing gearbox pass, and it is an important part of the increasing gearbox.

[0003] In the prior art, such as the utility model with the publication number CN211046322U, the utility model relates to the field of gearbox threading, specifically to a central support for a gearbox threading pipe. The central support for the gearbox threading pipe includes a wire routing groove. The inlet end of the wire routing groove is connected to a flange. A first positioning plate is provided in the middle of the wire routing groove, and through holes are provided on the first positioning plate. The wire routing groove passes through the through holes. By setting the wire routing groove, the hub inlet wire is placed in the wire routing groove, so as to avoid the direct contact between the hub inlet wire and the threading pipe, and further achieve the purpose of protecting the hub inlet wire and reducing failures. However, after the threading pipe is installed, there are small gaps remaining at the connection between the gearbox and the threading pipe, and liquids such as lubricating oil are likely to seep out through the gaps, resulting in poor sealing effect of the equipment.

[0004] In order to solve the problem that after the threading pipe is installed, there are small gaps remaining at the connection between the gearbox and the threading pipe, and liquids such as lubricating oil are likely to seep out through the gaps, resulting in poor sealing effect of the equipment, the prior art is to adopt the method of regularly disassembling and cleaning the gaps for treatment. However, this increases the operation difficulty of the equipment, and further leads to the problem of inconvenient equipment maintenance. Summary of the Utility Model

[0005] The purpose of the utility model is to propose a sealing structure for a hollow shaft threading pipe of a wind power gearbox to solve the disadvantages in the prior art that after the threading pipe is installed, there are small gaps remaining at the connection between the gearbox and the threading pipe, and liquids such as lubricating oil are likely to seep out through the gaps, resulting in poor sealing effect of the equipment.

[0006] To achieve the above object, the utility model adopts the following technical solution: a sealing structure for a hollow shaft threading pipe of a wind power gearbox, comprising a mounting seat and a sealing device. A threading coil is provided on one side of the mounting seat, and the sealing device is arranged in the inner wall of the mounting seat. The sealing device includes a circular sleeve fixedly connected to the mounting seat. A baffle is fixedly connected to the inner wall of the circular sleeve, and a hole I is formed on the surface of the baffle. The threading coil is inserted into the hole I on the surface of the baffle, and a rubber pad is fixedly connected to the surface of the threading coil and abuts against the baffle. By setting the sealing device, it effectively reduces the entry of external impurities, dust and moisture into the equipment through the connection gap between the threading pipe and the mounting seat, ensures the normal operation of the circuit, and reduces the occurrence of faults.

[0007] Preferably, a fixing rod is fixedly connected to the surface of the threading coil, a groove I is formed on the surface of the circular sleeve, and a sliding rod is slidably connected to the groove I on the surface of the circular sleeve. By setting the fixing rod, it is convenient to drive the rubber pad to abut against the baffle in cooperation with the sliding rod during use, increasing the usability of the equipment.

[0008] Preferably, a clamping groove is formed on the surface of the sliding rod, and the fixing rod is clamped in the clamping groove on the surface of the sliding rod. An auxiliary plate is fixedly connected to one side of the sliding rod. By setting the sliding rod, the sliding rod assists the fixing rod in positioning during use, increasing the stability of the equipment and reducing the operation difficulty of the equipment.

[0009] Preferably, a pressure spring is fixedly connected to one side of the auxiliary plate, and the side of the pressure spring away from the auxiliary plate is fixedly connected to the circular sleeve. By setting the pressure spring, the pressure spring generates an elastic force to squeeze the auxiliary plate during use, facilitating the sealing of the rubber pad in cooperation with the sliding rod.

[0010] Preferably, there are two sliding rods, and the two sliding rods are arranged in mirror symmetry.

[0011] Preferably, a fastening component is arranged on the surface of the sliding rod. The fastening component includes a clamping plate fixedly connected to the sliding rod, a threaded hole is formed on the surface of the clamping plate, and a lead screw is threadedly connected to the threaded hole on the surface of the clamping plate. A knob is fixedly connected to one side of the lead screw. By setting the fastening component, it is convenient to seal the threading pipe and the sliding rod, increasing the usability of the equipment and reducing the operation difficulty of the equipment.

[0012] Preferably, a slot is formed on the side of the fixing rod close to the lead screw, and the lead screw is inserted into the slot on one side of the fixing rod. By setting the lead screw, the lead screw is convenient to connect the threading pipe and the sliding rod in cooperation with the fixing rod during use, increasing the usability of the equipment and reducing the operation difficulty of the equipment.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are as follows:

[0014] In the present utility model, by providing a sealing device and a fastening component, during installation, the pressing-through coil is inserted into the round sleeve. The rubber pad is made of a soft material and is deformed by extrusion when it abuts against the baffle. When the rubber pad passes through the baffle, it resumes its original shape. At this time, the fixing rod abuts against the sliding rod, and the sliding rod is extruded and slides under force. Then, when the knob is rotated to drive the lead screw to be inserted into the fixing rod to complete the fixation, the pressing-through coil is released, and the compression spring loses its restraint and generates an elastic force to extrude the sliding rod. The sliding rod pushes the pressing-through coil to drive the rubber pad to abut against the baffle, sealing the gap. By providing the present utility model, it effectively reduces the entry of external impurities, dust, and moisture into the equipment interior through the connection gap between the threading pipe and the mounting base, ensures the normal operation of the circuit, reduces the occurrence of faults. Secondly, good sealing can reduce the leakage of internal lubricating oil, which not only saves costs but also reduces environmental pollution. Moreover, it can enhance the compressive and impact resistance of the threading pipe and adapt to complex and changeable working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a three-dimensional structural schematic diagram of the sealing structure of the hollow shaft threading pipe of the wind power gearbox proposed by the present utility model;

[0016] Figure 2 is the Figure 1 enlarged structural schematic diagram at A of the sealing structure of the hollow shaft threading pipe of the wind power gearbox proposed by the present utility model;

[0017] Figure 3 FIG. is a sectional structural schematic diagram of the sealing structure of the hollow shaft threading pipe of the wind power gearbox proposed by the present utility model;

[0018] Figure 4 is the structural schematic diagram of the sealing device of the sealing structure of the hollow shaft threading pipe of the wind power gearbox proposed by the present utility model;

[0019] Figure 5 is the Figure 4 enlarged structural schematic diagram at B of the sealing structure of the hollow shaft threading pipe of the wind power gearbox proposed by the present utility model.

[0020] Legend: 1, mounting base; 2, pressing-through coil; 3, sealing device; 31, round sleeve; 32, rubber pad; 33, baffle; 34, fixing rod; 35, sliding rod; 36, auxiliary plate; 37, compression spring; 4, fastening component; 41, knob; 42, lead screw; 43, clamping plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Please refer to Figures 1-5 , the present utility model provides a technical solution: a sealing structure for the hollow shaft threading pipe of a wind power gearbox, including a mounting base 1 and a sealing device 3. A pressing-through coil 2 is provided on one side of the mounting base 1, and the sealing device 3 is arranged in the inner wall of the mounting base 1.

[0022] In this embodiment: The sealing device 3 includes a circular sleeve 31, the circular sleeve 31 is fixedly connected to the mounting base 1, a baffle 33 is fixedly connected to the inner wall of the circular sleeve 31, a first hole is formed on the surface of the baffle 33, the wire threading coil 2 is inserted into the first hole on the surface of the baffle 33, a rubber pad 32 is fixedly connected to the surface of the wire threading coil 2, and the rubber pad 32 abuts against the baffle 33. By providing the sealing device 3, it effectively reduces the entry of external impurities, dust, and moisture into the device through the connection gap between the wire threading pipe and the mounting base 1, ensures the normal operation of the circuit, and reduces the occurrence of faults.

[0023] Specifically, a fixing rod 34 is fixedly connected to the surface of the wire threading coil 2, a first groove is formed on the surface of the circular sleeve 31, and a sliding rod 35 is slidably connected to the first groove on the surface of the circular sleeve 31. By providing the fixing rod 34, during use, it is convenient to cooperate with the sliding rod 35 to drive the rubber pad 32 to abut against the baffle 33, increasing the usability of the device.

[0024] Specifically, a clamping groove is formed on the surface of the sliding rod 35, and the fixing rod 34 is clamped in the clamping groove on the surface of the sliding rod 35. A supporting plate 36 is fixedly connected to one side of the sliding rod 35. By providing the sliding rod 35, during use, the sliding rod 35 assists the fixing rod 34 in positioning, increasing the stability of the device and reducing the operation difficulty of the device.

[0025] Specifically, a pressure spring 37 is fixedly connected to one side of the supporting plate 36, and the side of the pressure spring 37 away from the supporting plate 36 is fixedly connected to the circular sleeve 31.

[0026] In this embodiment: By providing the pressure spring 37, during use, the pressure spring 37 generates an elastic force to squeeze the supporting plate 36, facilitating the cooperation with the sliding rod 35 to drive the rubber pad 32 for sealing.

[0027] Specifically, there are two sliding rods 35, and the two sliding rods 35 are arranged in mirror symmetry.

[0028] Specifically, a fastening component 4 is provided on the surface of the sliding rod 35. The fastening component 4 includes a clamping plate 43, the clamping plate 43 is fixedly connected to the sliding rod 35, a threaded hole is formed on the surface of the clamping plate 43, a screw rod 42 is threadedly connected to the threaded hole on the surface of the clamping plate 43, and a knob 41 is fixedly connected to one side of the screw rod 42.

[0029] In this embodiment: By providing the fastening component 4, it is convenient to seal the wire threading pipe and the sliding rod 35, increasing the usability of the device and reducing the operation difficulty of the device.

[0030] Specifically, a slot is formed on the side of the fixing rod 34 close to the screw rod 42, and the screw rod 42 is inserted into the slot on one side of the fixing rod 34.

[0031] In this embodiment: By providing the lead screw 42, during use, the lead screw 42 facilitates the connection of the wire conduit to the sliding rod 35 in cooperation with the fixed rod 34, improving the usability of the device and reducing the operation difficulty of the device.

[0032] Working principle: By providing the sealing device 3 and the fastening assembly 4, during installation, press the wire threading coil 2 to insert it into the round sleeve 31. The rubber gasket 32 is made of a soft material and is deformed by extrusion after abutting against the baffle 33. When the rubber gasket 32 passes through the baffle 33, it resumes its original shape. At this time, the fixed rod 34 abuts against the sliding rod 35, and the sliding rod 35 is extruded and slides under force. At this time, rotate the knob 41 to drive the lead screw 42 to insert into the fixed rod 34 to complete the fixation. Then release the wire threading coil 2. The compression spring 37 loses its restraint and generates an elastic force to extrude the sliding rod 35. The sliding rod 35 pushes the wire threading coil 2 to drive the rubber gasket 32 to abut against the baffle 33, sealing the gap. By providing the present utility model, it effectively reduces the entry of external impurities, dust, and moisture into the device through the connection gap between the wire conduit and the mounting base 1, ensuring the normal operation of the circuit, reducing the occurrence of faults. Secondly, good sealing can reduce the leakage of internal lubricating oil, not only saving costs but also reducing environmental pollution. Moreover, it can enhance the compressive and impact resistance of the wire conduit, adapting to complex and changeable working environments.

Claims

1. A wind turbine gearbox hollow shaft threading tube sealing structure, comprising a mounting seat (1) and a sealing device (3), characterized in that: A threading coil (2) is provided on one side of the mounting seat (1); the sealing device (3) is provided in the inner wall of the mounting seat (1); the sealing device (3) comprises a round sleeve (31); the round sleeve (31) is fixedly connected to the mounting seat (1); a baffle (33) is fixedly connected to the inner wall of the round sleeve (31); a hole (1) is provided on the surface of the baffle (33); the threading coil (2) is inserted into the hole (1) on the surface of the baffle (33); a rubber pad (32) is fixedly connected to the surface of the threading coil (2); the rubber pad (32) abuts against the baffle (33).

2. The wind turbine gearbox hollow shaft threading tube sealing structure according to claim 1 is characterized in that: A fixing rod (34) is fixedly connected to the surface of the threading coil (2), a groove (1) is provided on the surface of the circular sleeve (31), and a sliding rod (35) is slidably connected to the groove (1) on the surface of the circular sleeve (31).

3. The wind turbine gearbox hollow shaft threading tube sealing structure according to claim 2 is characterized by: A slot is provided on the surface of the slide bar (35), the fixing bar (34) is engaged with the slot on the surface of the slide bar (35), and an auxiliary plate (36) is fixedly connected to one side of the slide bar (35).

4. The wind turbine gearbox hollow shaft threading tube sealing structure according to claim 3 is characterized by: A pressure spring (37) is fixedly connected to one side of the auxiliary plate (36), and a side of the pressure spring (37) away from the auxiliary plate (36) is fixedly connected to the circular sleeve (31).

5. The wind turbine gearbox hollow shaft threading tube sealing structure according to claim 2, characterized in that: There are two slide bars (35), and the two slide bars (35) are arranged in a mirror-symmetrical manner.

6. The wind turbine gearbox hollow shaft threading tube sealing structure according to claim 2, characterized in that: A fastening assembly (4) is provided on the surface of the slide bar (35), the fastening assembly (4) comprising a clamping plate (43), the clamping plate (43) being fixedly connected to the slide bar (35), a threaded hole being provided on the surface of the clamping plate (43), a screw rod (42) being threadedly connected to the threaded hole on the surface of the clamping plate (43), and a knob (41) being fixedly connected to one side of the screw rod (42).

7. The wind turbine gearbox hollow shaft threading tube sealing structure according to claim 6, characterized in that: A slot is provided on one side of the fixing rod (34) close to the screw rod (42), and the screw rod (42) is inserted into the slot on one side of the fixing rod (34).

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