Maintenance tool for variable pitch bearing bolt of wind generating set

Abstract

The utility model discloses a wind generating set variable pitch bearing bolt maintenance tool, which relates to the technical field of wind power generation equipment maintenance, and comprises a hydraulic torque wrench, the bottom of the hydraulic torque wrench is fixedly connected with a mounting cylinder, one side of the mounting cylinder is fixedly connected with a mounting arm, and the bottom of the mounting arm is provided with an adjusting auxiliary mechanism. The adjusting auxiliary mechanism comprises an adjusting sleeve, the bottom of the adjusting sleeve is fixedly connected with an inner connecting sleeve, the outer end of the inner connecting sleeve is sleeved with an outer connecting sleeve, the inner bottom end of the outer connecting sleeve is fixedly connected with an electric push rod, and a groove is formed in the bottom of the outer connecting sleeve. An infrared distance measuring sensor is fixedly connected to the side, close to the mounting cylinder, of the bottom of the mounting arm. The jacking and upward moving distance of the tool can be detected through an infrared distance measuring sensor, then an electric push rod pushes an adjusting auxiliary mechanism to extend, the bottom of an outer connecting sleeve is always arranged on an adjacent bolt in a sleeving mode to achieve counter-acting force, the problem of disengagement is avoided, use is more convenient, and practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment maintenance, in particular to a wind power generator set variable pitch bearing bolt maintenance tool. Background Art

[0002] A wind turbine generator set includes a wind rotor and a generator; the wind rotor contains blades, a hub, and reinforcements; it has the functions of generating electricity by rotating the blades under wind power and rotating the generator head. A wind turbine generator set is a system that converts the kinetic energy of wind into electrical energy. During the long-term operation of a wind turbine generator set, it is inevitable that the various equipment will be damaged, so regular maintenance is required to ensure that the equipment can operate normally.

[0003] After searching, Chinese patent number CN216008778U discloses a wind turbine variable pitch bearing bolt maintenance tool, including a driving part and a disassembly part, the disassembly part can be rotatably arranged, and one end of the disassembly part is provided with a groove for clamping the nut to be maintained; the driving part drives the disassembly part to rotate to disassemble or install the nut;

[0004] The above-mentioned public documents realize the disassembly and maintenance of bolts by the mutual cooperation of driving parts, disassembly parts and reverse acting parts. However, there are still some shortcomings in actual use. For example, when the bolts are rotated and disassembled by the driving parts and disassembly parts, the rotation of the bolts will gradually lift the tooling away from the bearings, and the reverse acting parts sleeved on the adjacent bolts will also move accordingly. If the reverse acting parts are separated from the sleeved bolts during movement, the reverse acting parts can no longer exert a reaction force on the operation of the driving parts and disassembly parts. It is too difficult for workers to disassemble the bolts by holding the tooling with their bare hands.

[0005] Therefore, in order to solve the above-mentioned deficiencies, the present application proposes a wind turbine pitch bearing bolt maintenance tool. Utility Model Content

[0006] The utility model provides a wind turbine generator set variable pitch bearing bolt maintenance tool to solve the above technical problems.

[0007] To solve the above technical problems, the utility model provides a wind turbine variable pitch bearing bolt maintenance tool, comprising a hydraulic torque wrench and a bolt removal assembly, the bolt removal assembly and the output end of the hydraulic torque wrench are adaptably connected, the bottom of the hydraulic torque wrench is fixedly connected with a mounting cylinder, the bolt removal assembly passes through the mounting cylinder, one side of the mounting cylinder is fixedly connected with a mounting arm, and the bottom of the mounting arm is installed with an adjustment auxiliary mechanism, the adjustment auxiliary mechanism comprises an adjustment sleeve, the adjustment sleeve is sleeved on the mounting arm, the bottom of the adjustment sleeve is fixedly connected with an inner connecting sleeve, the outer end of the inner connecting sleeve is sleeved with an outer connecting sleeve, the bottom end of the outer connecting sleeve is fixedly connected with an electric push rod, the top of the electric push rod is fixedly connected to the bottom of the adjustment sleeve, the electric push rod passes through the inner connecting sleeve, the bottom of the outer connecting sleeve is provided with a groove, one side of the outer connecting sleeve is fixedly connected with a controller, and the bottom of the mounting arm close to the mounting cylinder is fixedly connected with an infrared ranging sensor.

[0008] Preferably, the bolt removal assembly consists of a bolt sleeve, a transmission rod and a hexagonal block, the bolt sleeve is located below the bottom of the mounting tube, the transmission rod is fixedly connected to the top of the bolt sleeve, and the transmission rod passes through the mounting tube, the hexagonal block is fixedly connected to the top of the transmission rod, and the hexagonal block is adaptably connected to the output end of the hydraulic torque wrench.

[0009] Preferably, a hand screw is threadedly connected to the top of the adjusting sleeve, and the adjusting sleeve is fixedly connected to the mounting arm via the hand screw.

[0010] Preferably, the controller has a built-in battery and a control mainboard, and the electric push rod, infrared ranging sensor and battery are electrically connected to the control mainboard respectively.

[0011] Preferably, a charging port is installed at the bottom of the controller, and the charging port is electrically connected to the control mainboard.

[0012] Compared with the related art, the wind turbine generator set pitch bearing bolt maintenance tool provided by the utility model has the following beneficial effects:

[0013] When the bolts are removed by means of a hydraulic torque wrench and a bolt removal assembly, the position of the auxiliary mechanism is adjusted on the mounting arm and the auxiliary mechanism is placed on adjacent bolts to provide a reverse force. When the bolts are tightened and the jacking fixture is moved upward, the electric push rod pushes the adjustment sleeve and the outer connecting sleeve to separate and move according to the jacking upward distance detected by the infrared ranging sensor, that is, the auxiliary mechanism is extended, so that the bottom of the outer connecting sleeve is always placed on the adjacent bolts to provide a reverse force, and the problem of detachment will not occur. The use is more convenient and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a schematic diagram of the overall structure from a first-view perspective of a wind turbine generator set pitch bearing bolt maintenance tool proposed by the utility model;

[0015] Figure 2 A second-view overall structural diagram of a wind turbine pitch bearing bolt maintenance tool proposed by the utility model;

[0016] Figure 3 This is a schematic diagram of the installation barrel and installation arm structure of a wind turbine pitch bearing bolt maintenance tool proposed by the utility model;

[0017] Figure 4 This is a schematic diagram of the bolt disassembly assembly structure of a wind turbine pitch bearing bolt maintenance tool proposed by the utility model;

[0018] Figure 5 The utility model is a cross-sectional view of an auxiliary positioning mechanism of a wind turbine generator set variable pitch bearing bolt maintenance tool.

[0019] Numbers in the figure: 1. Hydraulic torque wrench, 2. Mounting cylinder, 3. Bolt sleeve, 4. Transmission rod, 5. Hexagonal block, 6. Mounting arm, 7. Adjustment sleeve, 8. Thumb screw, 9. Inner connecting sleeve, 10. Outer connecting sleeve, 11. Electric push rod, 12. Groove, 13. Controller, 14. Charging port, 15. Infrared ranging sensor. DETAILED DESCRIPTION

[0020] Example, by Figure 1-5 It is given that the utility model includes a hydraulic torque wrench 1 and a bolt removal assembly, the bolt removal assembly and the output end of the hydraulic torque wrench 1 are adaptably connected, the bottom of the hydraulic torque wrench 1 is fixedly connected with a mounting cylinder 2, the bolt removal assembly passes through the mounting cylinder 2, one side of the mounting cylinder 2 is fixedly connected with a mounting arm 6, the bottom of the mounting arm 6 is installed with an adjustment auxiliary mechanism, the adjustment auxiliary mechanism includes an adjustment sleeve 7, the adjustment sleeve 7 is sleeved on the mounting arm 6, the bottom of the adjustment sleeve 7 is fixedly connected with an inner connecting sleeve 9, the outer end of the inner connecting sleeve 9 is sleeved with an outer connecting sleeve 10, the inner bottom end of the outer connecting sleeve 10 is fixedly connected with an electric push rod 11, the top of the electric push rod 11 is fixedly connected to the bottom of the adjustment sleeve 7, the electric push rod 11 passes through the inner connecting sleeve 9, the bottom of the outer connecting sleeve 10 is provided with a groove 12, one side of the outer connecting sleeve 10 is fixedly connected with a controller 13, and the bottom of the mounting arm 6 close to the mounting cylinder 2 is fixedly connected with an infrared ranging sensor 15.

[0021] The bolt removal assembly consists of a bolt sleeve 3, a transmission rod 4 and a hexagonal block 5. The bolt sleeve 3 is located below the bottom of the mounting tube 2. The transmission rod 4 is fixedly connected to the top of the bolt sleeve 3, and the transmission rod 4 passes through the mounting tube 2. The hexagonal block 5 is fixedly connected to the top of the transmission rod 4. The hexagonal block 5 is adaptably connected to the output end of the hydraulic torque wrench 1. The output end of the hydraulic torque wrench 1 is an inner hexagonal groove. The hexagonal block 5 is adaptably inserted into the inner hexagonal groove, so that the hydraulic torque wrench 1 can drive the bolt removal assembly to rotate as a whole to remove the bolt.

[0022] The top of the adjusting sleeve 7 is connected with a hand screw 8 through a thread, and the adjusting sleeve 7 is fixedly connected to the mounting arm 6 through the hand screw 8. Loosening the hand screw 8 can move the position of the adjusting auxiliary mechanism on the mounting arm 6, so that it can adapt to bolts with different spacings for use. After the position is determined, tightening the hand screw 8 can fix the position of the adjusting auxiliary mechanism.

[0023] The controller 13 has a built-in battery and a control mainboard. The electric push rod 11, the infrared ranging sensor 15 and the battery are electrically connected to the control mainboard respectively. The battery can provide power for the electric push rod 11 and the infrared ranging sensor 15. The built-in battery and the control mainboard of the controller 13 are existing mature technologies, so they are not elaborated here.

[0024] A charging port 14 is installed at the bottom of the controller 13 . The charging port 14 is electrically connected to the control mainboard. The battery can be charged through the charging port 14 .

[0025] Working principle:

[0026] When removing the variable pitch bearing bolts of a wind turbine generator set, the bolt sleeve 3 is put on the bolt to be removed, and then the adjustment auxiliary mechanism is moved on the mounting arm 6 until the bottom of the outer connecting sleeve 10 is put on the adjacent bolt, and then the hand screw 8 is tightened to fix the position of the adjustment sleeve 7 on the mounting arm 6, that is, the position of the adjustment auxiliary mechanism is fixed, and then the hydraulic torque wrench 1 is used to drive the bolt removal assembly to rotate and screw down the bolt to be removed. As the bolt to be removed is screwed down, the bolt will gradually support the bolt removal assembly, thereby driving the entire device to be lifted up. During this period, the infrared distance sensor 15 will always detect the distance between it and the bearing. When the device is lifted up, the infrared ranging sensor 15 detects the lifting distance, and its detection data will be transmitted to the control main board in the controller 13 in real time, and the control main board will immediately drive the electric push rod 11 to extend so that the adjustment sleeve 7 and the external connection sleeve 10 move away from each other. Since the adjustment sleeve 7 will be lifted up synchronously with the installation arm 6, when the external connection sleeve 10 moves away from the adjustment sleeve 7, the groove 12 at the bottom can always be sleeved on the adjacent bolt and will not be detached, thereby avoiding the rotation problem of the entire device as the bolts are removed. After the removal is completed, the electric push rod 11 will shrink so that the adjustment sleeve 7 and the external connection sleeve 10 are brought closer together again.

Claims

1. A wind turbine pitch bearing bolt maintenance tool, comprising a hydraulic torque wrench (1) and a bolt removal assembly, wherein the bolt removal assembly is adaptably connected to an output end of the hydraulic torque wrench (1), and is characterized in that: The bottom of the hydraulic torque wrench (1) is fixedly connected to a mounting cylinder (2), the bolt removal assembly passes through the mounting cylinder (2), one side of the mounting cylinder (2) is fixedly connected to a mounting arm (6), the bottom of the mounting arm (6) is equipped with an adjustment auxiliary mechanism, the adjustment auxiliary mechanism comprises an adjustment sleeve (7), the adjustment sleeve (7) is sleeved on the mounting arm (6), the bottom of the adjustment sleeve (7) is fixedly connected to an inner connecting sleeve (9), the outer end of the inner connecting sleeve (9) is sleeved with an outer connecting sleeve (10), the inner bottom end of the outer connecting sleeve (10) is fixedly connected to an electric push rod (11), the top of the electric push rod (11) is fixedly connected to the bottom of the adjusting sleeve (7), the electric push rod (11) passes through the inner connecting sleeve (9), the bottom of the outer connecting sleeve (10) is provided with a groove (12), one side of the outer connecting sleeve (10) is fixedly connected to a controller (13), and the bottom of the mounting arm (6) is fixedly connected to an infrared distance measuring sensor (15) on the side close to the mounting cylinder (2).

2. A wind turbine generator set pitch bearing bolt maintenance tool according to claim 1, characterized in that: The bolt removal assembly consists of a bolt sleeve (3), a transmission rod (4) and a hexagonal block (5); the bolt sleeve (3) is located below the bottom of the installation tube (2); the transmission rod (4) is fixedly connected to the top of the bolt sleeve (3), and the transmission rod (4) passes through the installation tube (2); the hexagonal block (5) is fixedly connected to the top of the transmission rod (4); and the hexagonal block (5) is adaptably connected to the output end of the hydraulic torque wrench (1).

3. A wind turbine generator set pitch bearing bolt maintenance tool according to claim 1, characterized in that: The top end of the adjustment sleeve (7) is connected to a hand screw (8) via a thread, and the adjustment sleeve (7) is fixedly connected to the mounting arm (6) via the hand screw (8).

4. A wind turbine generator set pitch bearing bolt maintenance tool according to claim 1, characterized in that: The controller (13) has a built-in storage battery and a control mainboard, and the electric push rod (11), the infrared distance measuring sensor (15) and the storage battery are electrically connected to the control mainboard respectively.

5. A wind turbine generator set pitch bearing bolt maintenance tool according to claim 4, characterized in that: A charging port (14) is installed at the bottom of the controller (13), and the charging port (14) is electrically connected to the control mainboard.

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