Device for detecting cracks of wind power variable pitch bearing

Abstract

The utility model belongs to the technical field of variable-pitch bearing detection, and particularly relates to a wind power variable-pitch bearing crack detection device, which comprises a detection table, a bearing main body arranged at the top of the detection table, a rotating motor fixedly mounted at the bottom of the detection table, a turntable arranged at the top of the detection table, and an inner ring limiting detection mechanism arranged on the turntable, a mounting seat is fixedly mounted on one side of the detection table, and a first electric push rod is fixedly mounted on the mounting seat. According to the utility model, the installation seat, the first electric push rod, the limiting clamping sleeve, the bidirectional electric cylinder and the limiting support plate are matched for use, so that the outer ring and the inner ring of the bearing main body can be limited and fixed respectively, the placement stability can be improved conveniently, and the inner ring and the outer ring of the bearing main body can be prevented from sliding easily to affect the detection effect during detection; the inner ring limiting detection mechanism and the outer ring detection mechanism are arranged to be used in cooperation, the detection comprehensiveness of the bearing body can be effectively improved, detection omission is prevented from being easily caused, and meanwhile the detection work efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of variable pitch bearing detection, in particular to a wind power variable pitch bearing crack detection device. BACKGROUND

[0002] A plurality of large bearings are used in the wind turbine generator unit, such as variable pitch bearing, yaw bearing, main shaft bearing, etc., which play a crucial role in the operation of the unit. The bearing cracking problem has long plagued the development of the wind power industry. Once the bearing cracks, it will pose a serious threat to the safety of the staff and the stable operation of the wind turbine generator unit. Therefore, the wind power variable pitch bearing needs to be detected by using a phased array detection device to release ultrasonic waves before installation, so as to timely find out possible problems of the variable pitch bearing and reduce the failure rate in use.

[0003] The prior art has the following disadvantages: the prior art discloses a wind power variable pitch bearing crack detection device with publication number CN202322071386.2, which comprises a workbench, a rotating table is rotatably connected inside the workbench, a gear ring is fixedly installed at the bottom of the rotating table, a gear is engaged at the bottom of the gear ring, a first pulley is fixedly installed on one side of the gear, the first pulley is rotatably connected inside the workbench, a belt is sleeved on the outside of the first pulley, a second pulley is sleeved on the inside of the belt, a motor is fixedly installed at the top of the workbench, the second pulley is fixedly installed at the output end of the motor, a variable pitch bearing is arranged at the top of the rotating table, and a transmission member is slidably connected inside the workbench.

[0004] The above device can facilitate rapid detection of the bearing through structural design when in use, but it only detects the outer ring of the bearing during the detection process, lacks a good inner ring detection mechanism, and is prone to detection omissions, which makes it inconvenient to better perform comprehensive detection work and has certain limitations in detection work. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a wind power variable pitch bearing crack detection device to solve the problems raised in the background art.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a wind power variable pitch bearing crack detection device, comprising a detection table, a bearing main body is arranged at the top of the detection table, a rotating motor is fixedly installed at the bottom of the detection table, a rotating disc is arranged at the top of the detection table, an inner ring limiting detection mechanism is arranged on the rotating disc, a mounting seat is fixedly installed on one side of the detection table, a first electric push rod is fixedly installed on the mounting seat, a limiting sleeve is fixedly installed at one end of the first electric push rod, and an outer ring detection mechanism is arranged on the detection table.

[0007] As a preferred technical scheme of the utility model, the rotating motor is fixedly installed at the bottom of the detection table through bolts, the rotating motor is electrically connected with the external power supply through wires, and the output end of the rotating motor is connected with the rotating disc.

[0008] As a preferred technical scheme of the utility model, the inner ring limiting detection mechanism comprises a bidirectional electric cylinder, limiting support plates, a second electric push rod and a first detection probe, the bidirectional electric cylinder is fixedly installed at the top of the rotating disc, limiting support plates are arranged at the two ends of the bidirectional electric cylinder, the second electric push rod is fixedly installed on one side of the bidirectional electric cylinder, the first detection probe is fixedly installed at one end of the second electric push rod, the bidirectional electric cylinder and the second electric push rod are electrically connected with the external power supply through wires, the limiting support plates are two in number and symmetrically distributed at the two ends of the bidirectional electric cylinder, and the limiting support plates are attached to the inner side of the bearing body.

[0009] As a preferred technical scheme of the utility model, the first electric push rod is two in number and symmetrically distributed at the two sides of the detection table, and the first electric push rod is fixedly installed at the top of the mounting seat through bolts.

[0010] As a preferred technical scheme of the utility model, the limiting sleeve is two in number and attached to the outer side of the bearing body.

[0011] As a preferred technical scheme of the utility model, the outer ring detection mechanism comprises an electric sliding rail, a driving sliding table, a third electric push rod and a second detection probe, the electric sliding rail is arranged at the top of the detection table, the driving sliding table is arranged on the electric sliding rail, the third electric push rod is fixedly installed at the top of the driving sliding table, the second detection probe is fixedly installed at one end of the third electric push rod, the electric sliding rail is electrically connected with the external power supply through wires, and the driving sliding table is slidably connected with the electric sliding rail.

[0012] As a preferred technical scheme of the utility model, the second detection probe is of the same type as the first detection probe.

[0013] Compared with the prior art, the utility model provides a kind of detection device of wind power variable pitch bearing crack, with following beneficial effects:

[0014] 1、The detection device of the wind power variable pitch bearing crack, by setting mounting seat, first electric push rod, limiting sleeve, bidirectional electric cylinder and limiting support plate, cooperation is used, the outer ring and inner ring of bearing body can be respectively fixed, the stability of its placement is improved, the sliding displacement of bearing body inner and outer ring during detection can be prevented, the detection effect is influenced, so as to better work use.

[0015] 2、The wind power variable pitch bearing crack detection device, through the cooperation of the rotating motor, the turntable and the inner ring limit detection mechanism, the rotating motor is driven to work, the turntable is rotated to drive the inner ring limit detection mechanism to quickly detect the inner ring of the bearing body, the operation is convenient, the electric sliding rail, the driving sliding table, the third electric push rod and the second detection probe are used in cooperation, the third electric push rod is driven to work, the second detection probe is close to the outer ring of the bearing body, and the electric sliding rail is driven to work, the driving sliding table can be controlled to displace and slide to adjust, so that the outer ring of the bearing body can be quickly detected, and the detection efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a detection table bottom structure schematic view of the utility model;

[0018] Figure 3 It is an inner ring limit detection mechanism structure schematic view of the utility model;

[0019] Figure 4 It is a detection table top structure schematic view of the utility model.

[0020] In the drawing: 1, detection table; 2, bearing body; 3, rotating motor; 4, turntable; 5, inner ring limit detection mechanism; 501, two-way electric cylinder; 502, limit support plate; 503, second electric push rod; 504, first detection probe; 6, mounting seat; 7, first electric push rod; 8, limit clamp sleeve; 9, outer ring detection mechanism; 901, electric sliding rail; 902, driving sliding table; 903, third electric push rod; 904, second detection probe. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4In the embodiment, the device for detecting cracks in a wind power variable pitch bearing comprises a detection table 1, a bearing main body 2 arranged on the top of the detection table 1, a rotating motor 3 fixedly installed on the bottom of the detection table 1, a rotating disc 4, an inner ring limiting detection mechanism 5, an installation seat 6, a first electric push rod 7, a limiting sleeve 8, and an outer ring detection mechanism 9.

[0023] In the embodiment, the rotating motor 3 is fixedly installed on the bottom of the detection table 1 through bolts, the rotating motor 3 is electrically connected with an external power source through wires, and the output end of the rotating motor 3 is connected with the rotating disc 4, so as to conveniently drive the rotating motor 3 to work and rotate the rotating disc 4.

[0024] In the embodiment, the inner ring limiting detection mechanism 5 comprises a bidirectional electric cylinder 501, limiting support plates 502, a second electric push rod 503, and a first detection probe 504. The bidirectional electric cylinder 501 is fixedly installed on the top of the rotating disc 4, the limiting support plates 502 are arranged at both ends of the bidirectional electric cylinder 501, the second electric push rod 503 is fixedly installed on one side of the bidirectional electric cylinder 501, and the first detection probe 504 is fixedly installed at one end of the second electric push rod 503. The bidirectional electric cylinder 501 and the second electric push rod 503 are electrically connected with the external power source through wires, the limiting support plates 502 are two and symmetrically distributed at both ends of the bidirectional electric cylinder 501, the limiting support plates 502 are in close contact with the inner side of the bearing main body 2, so as to conveniently limit and support the inner ring of the bearing main body 2 and prevent it from sliding and moving, and conveniently detect the inner ring;

[0025] In the embodiment, the first electric push rod 7 is two and symmetrically distributed at both sides of the detection table 1, the first electric push rod 7 is fixedly installed on the top of the installation seat 6 through bolts, the working stability of the first electric push rod 7 is improved, and the limiting sleeve 8 is conveniently pushed;

[0026] In the embodiment, the limiting sleeve 8 is two and in close contact with the outer side of the bearing main body 2, so as to conveniently limit and hold the outer ring of the bearing main body 2 and prevent it from easily sliding and moving;

[0027] In the embodiment, the outer ring detection mechanism 9 comprises an electric sliding rail 901, a driving sliding table 902, a third electric push rod 903 and a second detection probe 904, the electric sliding rail 901 is arranged on the top of the detection table 1, the driving sliding table 902 is arranged on the electric sliding rail 901, the third electric push rod 903 is fixedly installed on the top of the driving sliding table 902, one end of the third electric push rod 903 is fixedly installed with the second detection probe 904, the electric sliding rail 901 is electrically connected with an external power supply through wires, the driving sliding table 902 is slidably connected with the electric sliding rail 901, so as to conveniently control the displacement sliding adjustment of the driving sliding table 902, and the detection work on the outer ring of the bearing body 2 is facilitated;

[0028] In the embodiment, the second detection probe 904 is the same as the first detection probe 504 in type, so as to facilitate the detection work on the bearing body 2.

[0029] The working principle and use process of the utility model are as follows: when the operator detects the inner ring of the bearing body 2, the first electric push rod 7 is controlled to work to push the limiting sleeve 8 to limit and clamp the outer ring of the bearing body 2, so as to prevent the sliding displacement, the second electric push rod 503 is driven to work, so that the first detection probe 504 is close to the inner ring of the bearing body 2, the rotating motor 3 is driven to work, so that the rotating disc 4 drives the inner ring limiting detection mechanism 5 to rotate, so that the inner ring of the bearing body 2 can be conveniently and quickly and comprehensively detected, when the outer ring of the bearing body 2 is detected, the bidirectional electric cylinder 501 is controlled to work to push the limiting support plate 502 to limit and support the inner ring of the bearing body 2, so as to prevent the sliding displacement, the third electric push rod 903 is driven to work, so that the second detection probe 904 is close to the outer ring of the bearing body 2, the electric sliding rail 901 is driven to work, so that the driving sliding table 902 is controlled to displace and slide, so that the outer ring of the bearing body 2 can be conveniently and comprehensively detected, and the operation and use are convenient.

[0030] Finally, it should be noted that: the above only for preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A device for detecting cracks in wind turbine pitch bearings, comprising a testing platform (1), a bearing body (2) disposed on the top of the testing platform (1), a rotating motor (3) fixedly installed on the bottom of the testing platform (1), and a turntable (4) disposed on the top of the testing platform (1), characterized in that: The turntable (4) is provided with an inner ring limit detection mechanism (5), and a mounting base (6) is fixedly installed on one side of the detection platform (1). A first electric push rod (7) is fixedly installed on the mounting base (6), and a limit clamp (8) is fixedly installed at one end of the first electric push rod (7). An outer ring detection mechanism (9) is provided on the detection platform (1).

2. The device for detecting cracks in wind turbine pitch bearings according to claim 1, characterized in that: The rotating motor (3) is fixedly installed at the bottom of the testing table (1) by bolts. The rotating motor (3) is electrically connected to an external power source through wires. The output end of the rotating motor (3) is connected to the turntable (4).

3. The device for detecting cracks in wind turbine pitch bearings according to claim 1, characterized in that: The inner ring limiting detection mechanism (5) includes a bidirectional electric cylinder (501), a limiting support plate (502), a second electric push rod (503), and a first detection probe (504). The bidirectional electric cylinder (501) is fixedly installed on the top of the turntable (4). The bidirectional electric cylinder (501) is provided with limiting support plates (502) at both ends. The second electric push rod (503) is fixedly installed on one side of the bidirectional electric cylinder (501). The first detection probe (504) is fixedly installed at one end of the second electric push rod (503). The bidirectional electric cylinder (501) and the second electric push rod (503) are electrically connected to an external power source through wires. There are two limiting support plates (502), which are symmetrically distributed at both ends of the bidirectional electric cylinder (501). The limiting support plates (502) are in contact with the inner side of the bearing body (2).

4. The device for detecting cracks in wind turbine pitch bearings according to claim 1, characterized in that: There are two first electric push rods (7), which are symmetrically distributed on both sides of the testing table (1). The first electric push rods (7) are fixedly installed on the top of the mounting base (6) by bolts.

5. The device for detecting cracks in wind turbine pitch bearings according to claim 1, characterized in that: Two limiting sleeves (8) are provided, and the inner side of the limiting sleeve (8) is in contact with the outer side of the bearing body (2).

6. The device for detecting cracks in wind turbine pitch bearings according to claim 1, characterized in that: The outer ring detection mechanism (9) includes an electric slide rail (901), a drive slide table (902), a third electric push rod (903), and a second detection probe (904). The electric slide rail (901) is set on the top of the detection table (1). The drive slide table (902) is set on the electric slide rail (901). The third electric push rod (903) is fixedly installed on the top of the drive slide table (902). The second detection probe (904) is fixedly installed at one end of the third electric push rod (903). The electric slide rail (901) is electrically connected to an external power source through a wire. The drive slide table (902) is slidably connected to the electric slide rail (901).

7. The device for detecting cracks in wind turbine pitch bearings according to claim 6, characterized in that: The second detection probe (904) has the same model as the first detection probe (504).

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