Wind power jigger testing device

Abstract

The utility model relates to a wind power jigger testing device which comprises a hanging beam, three fixed pulley blocks installed at the two ends and the middle of the hanging beam, two winch devices arranged below the two fixed pulley blocks at the two ends of the hanging beam respectively, and a hoisting device hoisted below the fixed pulley block in the middle of the hanging beam through a steel wire rope. The two sets of winch devices are symmetrically arranged, and lifting drums of the two sets of winch devices are in transmission connection with the two sets of wind power jiggers respectively; the two ends of the steel wire rope are redirected through the fixed pulley block in the middle of the lifting beam and the two fixed pulley blocks at the two ends of the lifting beam respectively and then connected with the lifting drums of the two winch devices; and a counterweight and a tension meter are mounted on the hoisting device. The wind power jigger testing device is simple in testing operation, high in testing precision, good in stability and high in testing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power equipment, in particular to a wind power turning gear testing device. Background Art

[0002] When assembling and disassembling the blades of wind turbines, it is necessary to use a winch device to drive the wind turbine gearbox to drive the blade hub to rotate to a specified angle, so that multiple wind turbine blades can be installed or disassembled on the wind rotor. Since the torque of the wind turbine gearbox is very large, it is difficult to drive the ordinary winch. In order to smoothly drive the wind turbine gearbox to rotate and lock it in time, a special winch device for wind turbines is generally used. When the wind turbine winch is produced, the winch needs to be tested for torque, tension calibrated and debugged. Since the torque of the wind turbine winch is large, the test device currently used to test the winch uses a single set of tests, and the hydraulic motor is used to maintain pressure before calibration. When the hydraulic system is new, the accuracy is OK, but as the hydraulic system goes by, the system loss increases, which will lead to a decrease in calibration accuracy, and the efficiency of the single set test is low. Therefore, there is an urgent need for a wind turbine winch test device with simple test operation, high test accuracy, good stability and high test efficiency. Summary of the invention

[0003] The utility model aims to overcome the above-mentioned shortcomings and provide a wind turbine turning gear testing device with simple testing operation, high testing accuracy, good stability and high testing efficiency.

[0004] The purpose of the utility model is achieved in this way:

[0005] A wind turbine winch test device comprises a hanging beam, three fixed pulley blocks installed at both ends and the middle of the hanging beam, two sets of winch devices respectively arranged below the two fixed pulley blocks at both ends of the hanging beam, and a lifting device hoisted below the fixed pulley block in the middle of the hanging beam through a steel wire rope; the two sets of winch devices are symmetrically arranged, and the lifting drums of the two sets of winch devices are respectively connected to the two sets of wind turbine winches to be tested; the two ends of the steel wire rope are respectively connected to the lifting drums of the two sets of winch devices after being redirected through the fixed pulley block in the middle of the hanging beam and the two fixed pulley blocks at both ends of the hanging beam; the lifting device is installed with a counterweight and a dynamometer.

[0006] Furthermore, the winch device is located directly below the fixed pulley block at the end of the hanging beam, and is pressed in a fixed position by a counterweight block to ensure that the wire rope between the lifting drum and the fixed pulley block at the end of the hanging beam remains in a vertical state.

[0007] Furthermore, the top of the hanging beam is lifted by a car crane or an indoor crane double hook.

[0008] Furthermore, the winch device includes a base, a winch shaft rotatably installed on the base through a bearing, and an open external gear installed at the end of the winch shaft to drive the winch shaft to rotate; the lifting drum is fixed on the winch shaft; the driving mechanism of the winch to be tested is meshed and connected with the open external gear through a driving gear, the rotating part in the middle of the winch is connected to the end face of the winch shaft by bolts, and the stabilizing arm of the winch is hingedly connected to the base.

[0009] Furthermore, the open external gear is fixed on a shaft sleeve, and the shaft sleeve is sleeved on the winch shaft and transmits torque through a spline connection.

[0010] Furthermore, the lifting device includes a pulley suspended by a steel wire rope below a fixed pulley block in the middle of the lifting beam; the dynamometer and the counterweight are suspended in sequence below the pulley.

[0011] Furthermore, the weight setting range of the counterweight is 15-20T, and the counterweight is hung on the dynamometer by a sling or a steel rope.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model adopts a hanging beam, a fixed pulley block, a steel wire rope, a pulley, a lifting device and two sets of winch devices, and installs a turning gear to be tested on the two sets of winch devices. The two turning gears pull the steel wire rope to lift the lifting device to form a mechanical balance structure, and the test torque is adjusted by adjusting the counterweight of the lifting device. The test device has a simple structure, and the test operation process is simple and convenient, and is not restricted by the site. Double sets of turning gears are used for pulling and mechanical weights are used for calibration, which not only has high test accuracy and good test system stability, but also can perform torque tests on two wind turbine turning gears at the same time, greatly improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the installation structure of a wind turbine cranking test device.

[0015] Figure 2 This is a view in the direction of A of a wind turbine cranking test device of the utility model.

[0016] Figure 3 This is a B-direction view of a wind turbine cranking test device of the utility model.

[0017] Figure 4 The utility model is a schematic diagram of the structure of a winch device of a wind turbine winch testing device.

[0018] Figure 5 The utility model is a side view of a winch device of a wind turbine winch testing device.

[0019] Figure 6The utility model is a schematic diagram of the wire rope winding of a wind turbine turning gear testing device.

[0020] in:

[0021] Lifting beam 1, fixed pulley block 2, winch device 3, wire rope 4, lifting drum 5, counterweight 6, dynamometer 7, pulley 8, turntable 9, counterweight pressure block 10, bow shackle 11, lifting belt 12, lifting ring 13, pressure plate 14;

[0022] Base 31, winch shaft 32, open external gear 33, shaft sleeve 34;

[0023] Driving mechanism 90 , driving gear 91 , rotating part 92 , and stabilizing arm 93 . DETAILED DESCRIPTION

[0024] See also Figure 1 to Figure 6 The utility model relates to a wind turbine turning gear test device, comprising a hanging beam 1, three fixed pulley blocks 2 installed at both ends and the middle of the hanging beam 1, two sets of winch devices 3 respectively arranged under the two fixed pulley blocks 2 at both ends of the hanging beam 1, and a lifting device hoisted under the fixed pulley block 2 in the middle of the hanging beam 1 through a steel wire rope 4; the top of the hanging beam 1 is lifted by a double hook of a car crane or an indoor crane, which can be carried out indoors or outdoors without being restricted by the test site. Considering that the torque of the wind turbine turning gear 9 is relatively large, 10T·m is required. In this embodiment, the lifting weight of the car crane or the indoor crane should not be less than 20T, and the double hooks are used for lifting, and the hook span is 10m;

[0025] The lifting device comprises a pulley 8 suspended below the fixed pulley block 2 in the middle of the lifting beam 1 through a steel wire rope 4, a dynamometer 7 suspended on the hook of the pulley 8 through a bow-shaped shackle 11, and a counterweight 6 suspended on the dynamometer 7 through a lifting ring 13 and a sling 12; from top to bottom, the pulley 8, the dynamometer 7, and the counterweight 6 are sequentially mounted; the weight setting range of the counterweight 6 is 15-20T, and the counterweight 6 of the present embodiment is set to 18.5T, and the sling 12 can be replaced with a steel rope;

[0026] The two sets of winch devices 3 are symmetrically arranged, and the lifting drums 5 of the two sets of winch devices 3 are respectively connected to the two sets of wind turbine winches 9 to be tested; the winch device 3 includes a base 31, a winch shaft 32 rotatably installed on the base 31 through a bearing, an open external gear 33 installed at the end of the winch shaft 32 to drive the winch shaft 32 to rotate, and a lifting drum 5 fixed on the winch shaft 32; the open external gear 33 is fixed on the shaft sleeve 34, the shaft sleeve 34 is sleeved on the winch shaft 32 and transmits torque through a spline connection; the driving mechanism 90 of the winch 9 to be tested is meshed and connected with the open external gear 33 through a driving gear 91, and the rotating part 92 located in the middle of the winch 9 is connected to the end face of the winch shaft 32 by bolts, and can rotate with the winch shaft 32, and the stabilizing arm 93 of the winch 9 is hingedly connected to the base 31, so that the winch 9 remains stable as a whole when outputting torque;

[0027] The winch device 3 is located directly below the fixed pulley block 2 at the end of the hanging beam 1, and is pressed in a fixed position by a counterweight block 10 to ensure that the wire rope 4 between the lifting drum 5 and the fixed pulley block 2 at the end of the hanging beam 1 remains in a vertical state, so that the winch device 3 is in a force balance state. The weight of the counterweight block 10 should not be less than the pulling force of the wire rope 4 on the lifting drum 5. In this embodiment, the weight of the counterweight block 10 is 10T, and the counterweight block 10 is pressed on the base 31 on the side of the lifting drum 5 that exits the rope, so as to keep the winch device 3 in a force balance and ensure that its position does not slide or deviate.

[0028] The two ends of the steel wire rope 4 are respectively connected to the lifting drum 5 of the two winch devices 3 through the fixed pulley block 2 in the middle of the hanging beam 1 and the two fixed pulley blocks 2 at the two ends of the hanging beam 1. The specific winding path is shown in Figure 6 ; The end of the wire rope 4 is fixedly mounted on the lifting drum 5 by the pressure plate 14, and 3 to 5 safety circles are reserved. Since a number of debugging circles are required during the test of the turning wheel 9, the number of circles of the wire rope 4 wound around the lifting drum 5 should be the number of debugging circles plus the number of safety circles. In this embodiment, the number of debugging circles is less than 6 circles;

[0029] When testing the wind turbine winch, first use the factory crane or outdoor truck crane to lift the beam 1, and the lifting height should not be less than 9m; determine the center line position of the lifting drum 5 by hanging the center plumb line of the pulley under the fixed pulley group 2 at both ends of the beam 1, and mark the position line of the winch device 3 accordingly; install the two winch devices 3 on the winch 9 to be debugged, and place them at the winch positions marked under the two sides of the beam 1 respectively, and then use the counterweight pressure block 10 to press the fixed position of the winch device; hang and assemble the counterweight 6, dynamometer 7 and pulley 8 of the lifting device in sequence; connect the power supply of the two winches to be debugged, and the driving mechanism 90 of the two winches 9 to be tested drives the winch shaft 32 to rotate through the driving gear 91 and the open external gear 33, thereby driving the two lifting drums 5 to rotate, and tighten the wire rope 4 in the form of pulling, so that the middle counterweight 6 slowly rises about 1m above the ground and must not touch the ground, read the value of the dynamometer 7, and calibrate the winch.

[0030] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A wind turbine cranking test device, characterized in that: The invention comprises a hanging beam (1), three fixed pulley blocks (2) installed at both ends and in the middle of the hanging beam (1), two sets of winch devices (3) respectively arranged below the two fixed pulley blocks (2) at both ends of the hanging beam (1), and a weight-lifting device hung below the fixed pulley block (2) in the middle of the hanging beam (1) through a steel wire rope (4); the two sets of winch devices (3) are symmetrically arranged, and the lifting drums (5) of the two sets of winch devices (3) are respectively connected to the two sets of wind turbine winches (9) in a transmission manner; the two ends of the steel wire rope (4) are respectively connected to the lifting drums (5) of the two sets of winch devices (3) after being redirected through the fixed pulley block (2) in the middle of the hanging beam (1) and the two fixed pulley blocks (2) at both ends of the hanging beam (1); and a counterweight (6) and a dynamometer (7) are installed on the weight-lifting device.

2. The wind turbine turning gear test device according to claim 1, characterized in that: The winch device (3) is located directly below the fixed pulley block (2) at the end of the hanging beam (1) and is pressed in a fixed position by a counterweight pressure block (10) to ensure that the steel wire rope (4) between the lifting drum (5) and the fixed pulley block (2) at the end of the hanging beam (1) remains in a vertical state.

3. The wind turbine turning gear test device according to claim 1, characterized in that: The top of the hanging beam (1) is lifted by a car crane or an indoor crane double hook.

4. The wind turbine turning gear test device according to claim 1, characterized in that: The winch device (3) comprises a base (31), a winch shaft (32) rotatably mounted on the base (31) via a bearing, and an open external gear (33) mounted at the end of the winch shaft (32) to drive the winch shaft (32) to rotate; the lifting drum (5) is fixedly mounted on the winch shaft (32); the driving mechanism (90) of the winch (9) to be tested is meshedly connected to the open external gear (33) via a driving gear (91), the rotating part (92) in the middle of the winch (9) is connected to the end face of the winch shaft (32) via bolts, and the stabilizing arm (93) of the winch (9) is hingedly connected to the base (31).

5. The wind turbine turning gear test device according to claim 4, characterized in that: The open external gear (33) is fixed on a shaft sleeve (34), and the shaft sleeve (34) is sleeved on the winch shaft (32) and transmits torque through a spline connection.

6. The wind turbine turning gear test device according to claim 1, characterized in that: The lifting device comprises a pulley (8) which is suspended below a fixed pulley block (2) in the middle of a lifting beam (1) via a steel wire rope (4); the dynamometer (7) and the counterweight (6) are suspended in sequence below the pulley (8).

7. The wind turbine turning gear test device according to claim 1, characterized in that: The weight setting range of the counterweight (6) is 15-20 ton, and the counterweight (6) is hung on the dynamometer (7) by a sling or a steel rope.

Images